1. The utility model provides a fender connecting piece, one end is connected at the frame, and the other end is connected in fender front lower carriage, a serial communication port, include:

the first Y-direction supporting and tightening hole (11) is formed in the connecting position of the fender connecting piece (1) and the frame and is positioned at the part, protruding towards the Z direction, of the fender connecting piece (1);

the lower front support (7) is positioned at the joint of the fender connecting piece (1) and the frame, deviates a certain angle from the X direction to the Y direction and extends outwards, and the lower front support (7) is provided with a second Y-direction supporting and tightening hole (12);

the three-way supporting positioning hole (13) is arranged in the middle of the fender connecting piece (1) and partially protrudes in the Z direction;

and the fender connecting hole (14) is arranged at the connecting part of the fender connecting piece (1) and the front lower bracket of the fender.

2. A fender attachment according to claim 1, wherein: first Y has two to the quantity that supports the perforation (11), is close to fender connecting piece (1) respectively along the side of Y to both sides.

3. A fender attachment according to claim 1, further comprising:

the Z-direction positioning plane (15) is arranged at one end, close to the fender, of the fender connecting piece (1), and the normal direction of the Z-direction positioning plane is the Z direction;

an XZ bidirectional positioning hole (16) which is arranged on one side of the Z-direction positioning plane (15) close to the X direction;

the fender connecting hole (14) is formed in one end, close to the fender, of the Z-direction positioning plane (15).

4. An installation tool for installing the fender attachment member of claim 1, comprising:

the main frame (2) is positioned above the vehicle body;

a Y-direction slide rail (3) which is fixedly arranged on the main frame (2), wherein the Y-direction slide rail (3) is provided with a slide block which slides along the Y direction;

the fixed end of the lifting device (4) is connected to the slide block of the Y-direction slide rail (3), and the movable end of the lifting device extends downwards along the Z direction;

a plurality of positioning pins (5) are detachably connected to the movable end of the lifting device (4) and in threaded connection with the movable end, and the positioning pins (5) are matched with the three-way supporting positioning holes (13);

the clamping mechanism (6) is movably arranged on the side face of the lifting device (4) and extends into the bottom of the fender connecting piece (1), and the top face of the clamping mechanism (6) is matched with the bottom face of the fender connecting piece (1);

when the movable ends of the clamping mechanism (6) and the lifting device (4) move to preset positions, the top surface of the clamping mechanism (6) and the bottom surface of part of the positioning pins (5) clamp the fender connecting piece (1) from two sides of the fender connecting piece (1) respectively.

5. The installation tool of claim 4, wherein: the fender connecting piece (1) is provided with an XZ bidirectional positioning hole (16) and a Z-direction positioning plane (15), the Z-direction positioning plane (15) is arranged at one end, close to the fender, of the fender connecting piece (1), the normal direction of the Z-direction positioning hole is the Z direction, and the XZ bidirectional positioning hole (16) is arranged on one side, close to the X direction, of the Z-direction positioning plane (15);

the positioning pin (5) is also matched with the XZ bidirectional positioning hole (16).

6. An installation tool according to claim 4, characterised in that said clamping mechanism (6) comprises:

a manual clamping cylinder (61) provided on the side surface of the lifting device (4);

the pressing block (62) is arranged at the movable end of the manual clamping cylinder (61) and extends into the bottom of the fender connecting piece (1), and the top surface of the pressing block (62) is matched with the bottom surface of the fender connecting piece (1).

7. The installation tool of claim 6, wherein: and magnets are arranged on the bottom surfaces of the positioning pins (5).

8. The installation tool of claim 4, wherein: the main frame (2) and the Y are provided with thrust devices between the slide blocks of the slide rails (3), one ends of the thrust devices are fixedly installed on the main frame (2), the movable ends are connected to the slide blocks of the Y to the slide rails (3), and the pushing directions of the movable ends of the thrust devices point to the vehicle body.

9. An installation tooling according to claim 4, characterized in that said lifting device (4) comprises:

the track plate (41) is vertically arranged, and the top end of the track plate is installed on a sliding block of the Y-direction sliding rail (3);

the Z-direction sliding rail (42) is fixedly arranged on the side surface of the track plate (41) along the direction of the track plate (41), and is also provided with a sliding block which slides along the Z direction on the track, and the Z-direction bottom end of the Z-direction sliding rail (42) is provided with a stop block (421);

the working plate (43) is fixedly connected with a sliding block of the Z-direction sliding rail (42), and the clamping mechanism (6) is arranged on the X-direction side surface of the working plate (43);

the working blocks (44) are arranged on the bottom surface of the working plate (43), the positioning pins (5) are in threaded connection with the bottoms of the working blocks (44) and extend downwards, and at least one of the working blocks (44) extends outwards to be matched with the three-way supporting positioning hole (13);

and a Z-direction telescopic cylinder (45) with a fixed end connected to the track plate (41) and a movable end connected to the working plate (43).

10. An installation method for the installation tool of claim 4, comprising the steps of:

s1, adjusting the extending length of positioning pins (5) of an installation tool, installing one positioning pin (5) in a three-way supporting positioning hole (13) of a fender connecting piece (1), and enabling the rest positioning pins to abut against different positions of the top surface of the fender connecting piece (1);

s2, adjusting a clamping mechanism (6), and fixing the fender connecting piece (1) by using the clamping mechanism (6) and a positioning pin (5);

s3, sliding the Y-direction slide rail (3) to enable the fender connecting piece (1) to be tightly abutted against the frame;

s4, connecting the first Y-direction supporting tightening hole (11) and the second Y-direction supporting tightening hole (12) with the frame;

s5, connecting the fender connecting holes (14) with the front lower support of the fender by using connecting pieces;

s6, the connection between the positioning pin (5) and the fender connecting piece (1) is released, the clamping mechanism (6) is loosened, and the lifting device (4) is started, so that the lifting device (4) is lifted, and the installation is completed.

Background

At present, with increasingly strong competition in the domestic automobile industry, people have richer requirements on the appearance shape and aesthetic quality of automobiles. The automobile front fender area is used as one of front parts, the periphery of the automobile front fender area is rich in shape, and the automobile front fender area has aesthetic matching or installation functions with a hood, a front bumper, a headlamp, a front wheel arch, a front door and the like. The front key part of the whole vehicle has the position precision which directly influences the front face quality of the whole vehicle.

The fender bracket is mainly divided into a rear part, an upper part and a front part, the fender bracket is generally directly positioned and molded on a vehicle body through a clamp, and then the fender is mounted and fastened on the fender bracket through a tool. In order to meet increasingly rich internal functional requirements and external shape requirements, in recent years, the distance between the outer A surface area of the front area of the fender and the body of the vehicle body is increasingly longer. The longer distance means that the mounting point of the fender on the bracket is farther away from the body of the vehicle, so that the size precision of the mounting point relative to the vehicle body is more difficult to control, and a series of problems such as unstable fender positions are caused.

To the anterior too big problem of fender and automobile body apart from, at first for guaranteeing the anterior intensity of propping up of fender, the common case can increase the fender connecting piece between fender and automobile body, generally as shown in the figure, newly-increased fender connecting piece one end fastening is on automobile body, generally is on automobile body longeron or the automobile body front reinforcing plate, and one section distance of other end overhang department provides the mounting point of tightening for the fender.

The fender connecting piece is arranged for compensating the distance between the A surface of the fender and the automobile body, so that the L in the general size is more than 200mm, the fender connecting piece is limited by a headlamp structure, a front protection structure, a fender structure, a wiring harness arrangement and the like in the automobile body, the contact surface and the fastening space of the connecting piece and the automobile body are limited greatly, welding spot space or bolt fastening space can be basically met, and H is about 15-20 mm. Under the limiting conditions, the fender connecting piece which is connected and fixed with the vehicle body firstly forms a cantilever structure which is suspended on the vehicle body, the cantilever structure also brings fluctuation of the Z-direction position of the far end, the amplification ratio is about 200/20 times, when the installation surface of the vehicle body fluctuates, the stability of the Z-direction positioning fastening point of the far end fender is poor, meanwhile, the support is generally of a self-positioning design, the controllability is poor, and the debugging requirement of the complicated area on the Z-direction size cannot be met.

Disclosure of Invention

To the defect that exists among the prior art, the aim at of this application provides a fender connecting piece, installation frock and mounting method, reduces Z to undulant through the structure of fender connecting piece on the one hand, can improve the installation stability of fender connecting piece simultaneously, eliminates Z to stress, avoids Z to adjust only to the part deformation, plays the back of springing back after tightening.

In order to achieve the above purposes, on one hand, the technical scheme is as follows:

the application provides a fender connecting piece, one end is connected at the frame, and the other end is connected in fender front lower carriage, include:

the first Y-direction supporting and tightening hole is formed in the connecting position of the fender connecting piece and the frame and is positioned at the part, protruding in the Z direction, of the fender connecting piece;

the lower front support is positioned at the joint of the fender connecting piece and the frame, deviates a certain angle from the X direction to the Y direction and extends outwards, and is provided with a second Y-direction support tightening hole;

the three-way supporting positioning hole is arranged in the middle of the fender connecting piece, and part of the three-way supporting positioning hole protrudes in the Z direction;

and the fender connecting hole is formed at the connecting part of the fender connecting piece and the front lower bracket of the fender.

Preferably, the number of the first Y-direction support fastening holes is two, and the two first Y-direction support fastening holes are respectively close to the side faces of the fender connecting piece along the two Y-direction sides.

Preferably, the method further comprises the following steps:

the Z-direction positioning plane is arranged at one end, close to the fender, of the fender connecting piece, and the normal direction of the Z-direction positioning plane is the Z direction;

the XZ bidirectional positioning hole is formed in one side, close to the X direction, of the Z-direction positioning plane;

the fender connecting hole is formed in one end, close to the fender, of the Z-direction positioning plane.

The application still provides an installation frock for installing aforementioned fender connecting piece, includes:

the main frame is positioned above the vehicle body;

the Y-direction sliding rail is fixedly arranged on the main frame and is provided with a sliding block sliding along the Y direction;

the fixed end of the lifting device is connected to the slide block of the Y-direction slide rail, and the movable end of the lifting device extends downwards along the Z direction;

the plurality of positioning pins are detachably connected to the movable end of the lifting device and are in threaded connection with the movable end, and the positioning pins are matched with the three-way supporting positioning holes;

the clamping mechanism is movably arranged on the side face of the lifting device and extends into the bottom of the fender connecting piece, and the top face of the clamping mechanism is matched with the bottom face of the fender connecting piece;

when the movable ends of the clamping mechanism and the lifting device move to preset positions, the top surface of the clamping mechanism and the bottom surface of part of the positioning pins respectively clamp the fender connecting piece from two sides of the fender connecting piece.

Preferably, the fender connecting piece is provided with an XZ bidirectional positioning hole and a Z-direction positioning plane, the Z-direction positioning plane is arranged at one end, close to the fender, of the fender connecting piece, the normal direction of the Z-direction positioning plane is the Z direction, and the XZ bidirectional positioning hole is formed in one side, close to the X direction, of the Z-direction positioning plane;

the positioning pin is also matched with the XZ bidirectional positioning hole.

Preferably, the clamping mechanism includes:

the manual clamping cylinder is arranged on the side surface of the lifting device;

the pressing block is arranged at the movable end of the manual clamping cylinder and extends into the bottom of the fender connecting piece, and the top surface of the pressing block is matched with the bottom surface of the fender connecting piece.

Preferably, the bottom surfaces of the positioning pins are provided with magnets.

Preferably, a thrust device is arranged between the main frame and the slide block of the Y-direction slide rail, one end of the thrust device is fixedly installed on the main frame, the movable end of the thrust device is connected to the slide block of the Y-direction slide rail, and the pushing direction of the movable end of the thrust device points to the vehicle body.

Preferably, the lifting device includes:

the track plate is vertically arranged, and the top end of the track plate is installed on a sliding block of the Y-direction sliding rail;

the Z-direction sliding rail is fixedly arranged on the side surface of the track plate along the direction of the track plate and is also provided with a sliding block which slides along the Z direction on the track, and a stop block is arranged at the bottom end of the Z direction of the Z-direction sliding rail;

the working plate is fixedly connected with a sliding block of the Z-direction sliding rail, and the clamping mechanism is arranged on the X-direction side surface of the working plate;

the positioning pin is connected to the bottom of the working block in a threaded manner and extends downwards, and at least one of the working blocks extends outwards to be matched with the three-way supporting positioning hole;

and the fixed end of the Z-direction telescopic cylinder is connected to the track plate, and the movable end of the Z-direction telescopic cylinder is connected to the working plate.

10. The application also provides an installation method for the installation tool, which is characterized by comprising the following steps:

s1, adjusting the extending length of a positioning pin of an installation tool, installing one positioning pin in a three-way supporting positioning hole of a fender connecting piece, and enabling the rest positioning pins to abut against different positions of the top surface of the fender connecting piece;

s2, adjusting a clamping mechanism, and fixing the fender connecting piece by using the clamping mechanism and a positioning pin;

s3, sliding the Y-direction slide rail to enable the fender connecting piece to be tightly abutted to the frame;

s4, connecting the first Y-direction support tightening hole and the second Y-direction support tightening hole with the frame;

s5, connecting the fender connecting holes with the front lower support of the fender by using connecting pieces;

and S6, removing the connection between the positioning pin and the fender connecting piece, loosening the clamping mechanism, and starting the lifting device to enable the lifting device to ascend to finish installation.

The beneficial effect that technical scheme that this application provided brought includes:

the application provides a fender connecting piece, owing to increased the second Y in fender connecting piece lower part and to supporting the tight hole for the cantilever length of fender connecting piece changes first Y to supporting the intersection of the branch in tight hole and the branch in tight hole to supporting to first Y from first Y among the prior art to supporting tight hole bending position, reduces the cantilever and enlarges the proportion, has increased Z to stability.

The extending direction of the fender connecting piece at the second Y-direction supporting tightening hole is the oblique direction, the adjustment amount can be compensated through the movement of the relative position of the position when the Z-direction position of the tail end of the tool is adjusted, the Z-direction stress is eliminated, the problem that the part is deformed only due to the Z-direction adjustment in the traditional mode is avoided, and the part cannot be designed due to the fact that the part is rebounded after tightening.

The fender connecting piece mounting tool and the mounting method can be easily integrated with the fender tool and other automobile mounting tools according to functional requirements, the mounting tool is fixed relative to a fender in the Z direction, the connecting piece can be conveniently mounted with high precision, and the connecting piece can be self-adaptive to the Y direction, so that the connecting piece mounting tool and the mounting method are suitable for different automobile types. Meanwhile, the installation tool and the installation method enable the fender connecting piece to be tightly connected in a tool clamping state, so that the stability of the relative position and the controllability of the required position are guaranteed to the maximum extent.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of one embodiment of a fender connector of the present application.

Fig. 2 is a schematic view of another angle structure of the embodiment shown in fig. 1.

FIG. 3 is a schematic structural view of one embodiment of the installation tool of the present application.

Fig. 4 is a schematic view of another angle structure of the embodiment shown in fig. 3.

Fig. 5 is a flow chart of an installation method in the present application.

Reference numerals:

1. a fender attachment member; 11. a first Y-direction support tightening hole; 12. the second Y-direction support tightening hole; 13. three-way supporting positioning holes; 14. a fender attachment hole; 15. a Z-direction positioning plane; 16. XZ bidirectional positioning holes; 2. a main frame; 3. a Y-direction slide rail; 4. a lifting device; 41. a track plate; 42. a Z-direction slide rail; 421. a stopper; 43. a working plate; 44. a working block; 45. a Z-direction telescopic cylinder; 5. positioning pins; 6. a clamping mechanism; 61. a manual clamping cylinder; 62. a compression block; 7. and (5) a lower front bracket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The present application provides an embodiment of a fender attachment 1, which in this and other embodiments employs a vehicle coordinate system, the origin of which coincides with the center of mass, when the vehicle is at rest on a horizontal road, the X-direction is parallel to the ground and directed to the front of the vehicle, the Z-direction is directed upward through the center of mass of the vehicle, and the Y-direction is directed to the left side of the driver.

In this embodiment the fender attachment member 1 is attached at one end to the frame and at the other end to the fender front lower bracket.

The main body of the fender connecting piece 1 is of an arc-shaped structure, one side close to a frame tilts, one side close to a front lower support of a fender is a horizontally extending surface, and the fender connecting piece 1 is provided with a first Y-direction supporting tightening hole 11, a lower front support 7, a second Y-direction supporting tightening hole 12, a three-direction supporting positioning hole 13 and a fender connecting hole 14.

In the prior art, the top end of the upwarping part of the fender connecting piece 1 is connected with a frame through the connecting piece to form a cantilever structure, and the structure has a longer force arm when bearing Z-direction force, so that the fluctuation of the fender in the Z direction is larger, and the stability is poor.

In the present embodiment, the fender panel connecting member 1 is connected to one side of the frame, and as shown in fig. 1, the fender panel connecting member is shaped like a human hand, wherein a part of the fender panel connecting member extends upward in the direction Z, and another part of the fender panel connecting member extends downward in the left direction in the view of fig. 1 to form a lower front bracket 7, and in terms of a vehicle coordinate system, the lower front bracket 7 is located in a direction deviating a certain angle from the forward direction X of the fender panel connecting member 1 to the right direction, and in some embodiments, the lower front bracket extends slightly downward in the direction Z. The upwardly extending portion is provided with a first Y-support tightening hole 11 for primarily positioning the displacement of the support fender connection member 1 in the Y-direction. And the lower front support 7 is provided with a second Y-direction supporting and tightening hole 12, so that the integral fender connecting piece 1 forms a triangular structure at one side close to the frame, and at the moment, the bending point of the fender connecting piece 1 when being subjected to Z-direction force moves towards one side of the front lower support of the fender.

The three-way supporting positioning hole 13 is arranged in the middle of the fender connecting piece 1 and extends upwards, on one hand, the movement in two XY directions is limited by inserting the positioning pin in the tool, on the other hand, the movement in the Z direction is limited by the step surface of the positioning pin and the top surface of the three-way supporting positioning hole 13, the positioning is convenient, in the general embodiment, the three-way supporting positioning hole 13 is arranged at the joint of the upwarping part and the horizontal extending part of the fender connecting piece 1 and is close to the upwarping part, so that the three-way supporting positioning hole 13 does not need to be excessively protruded upwards towards the Z direction, and the possibility of interference of parts is reduced.

And the fender attachment aperture 14 is for attachment to a fender related structure, primarily at the end of the horizontally extending end of the fender attachment member 1.

In order to further improve the mounting strength, a structure in which two first Y-direction support tightening holes 11 are provided is adopted in some preferred embodiments.

Specifically, as shown in fig. 1 and 2, there are two upward extending portions of the fender attachment 1, one of the upward extending portions is inclined toward the front and the other is inclined toward the rear, and the two upward extending portions are slightly separated from each other, the upward extending portion of the fender attachment 1 and the lower front frame 7 form a tripod-shaped structure, so that the fender attachment 1 can perform a certain limiting function in the Z direction when abutting against the vehicle frame, and the two first Y-direction support fastening holes 11 are respectively formed in the upward extending portions of the two fender attachments 1.

In general, the positioning in the Z direction can be performed by means of the top planes of the first Y-direction positioning support tightening hole 11, the second Y-direction support tightening hole 12, the three-way support positioning hole 13, and the three-way support positioning hole 13.

However, in the case of the fender attachment 1 having a longer length, the horizontally extending end of the fender attachment 1 may still generate a certain vibration during the installation process, so that the finally installed fender attachment 1 may generate a certain stress, and in order to solve this problem, in some preferred embodiments, a Z-direction positioning plane 15 and an XZ bidirectional positioning hole 16 are provided, wherein the XZ bidirectional positioning hole 16 is an oblong hole in some embodiments, so that the fine adjustment of the fender attachment 1 can be facilitated.

Specifically, Z is to locating plane 15 setting stretching out the end at fender connecting piece 1's level, only need press from both sides Z to locating plane 15 through the instrument during installation like this and tightly can accomplish Z to location, and 1 other connection structure that stretches out downwards to Z of fender connecting piece all sets up in Z to locating plane 15 side by, avoids heterotypic processing, reduces the processing degree of difficulty. Also for the same reasons as above, the Z-positioning plane 15 is also extended with a portion of the raised portion, as shown in fig. 2, to form a V-shaped structure for mounting the middle support member extending downward in the direction Z. The top surface through three-dimensional support locating hole 13, the upper and lower two sides of Z to locating plane 15 and the two-way locating hole 16 of XZ form main three point fixing, guarantee that fender connecting piece 1 can not produce the upset, can fix a position through the two-way locating hole 16 of XZ earlier before Z is tight, avoid pressing from both sides the orientation of adjusting fender connecting piece 1 by a wide margin after pressing from both sides tightly, cause the work piece to damage simultaneously.

The application still provides an installation frock of being applied to aforementioned fender connecting piece 1, and the coordinate that uses in this kind of embodiment points to unanimous with aforementioned fender connecting piece 1 embodiment.

As can be seen from fig. 3, this kind of embodiment includes the main frame 2, the Y-slide rails 3, the lifting device 4, the positioning pins 5 and the clamping mechanism 6, and it should be noted that, in the view of fig. 4, the parts at the top end of the lifting device that are fastened together are removed for convenience of illustration, and the heating of this embodiment is not affected.

The main frame 2 is erected on a vehicle body, generally, installation tools for multiple parts of the whole vehicle are integrated on the same main frame 2 to cover the whole vehicle frame, and only one part of the installation tools applied to the fender connecting piece 1 in the embodiment is shown in fig. 3 and 4.

And the Y-direction slide rail 3 is arranged on the bottom surface of one beam of the main frame 2 along the Y direction, and a slide block of the Y-direction slide rail 3 can slide on the Y-direction slide rail 3 to drive the whole installation tool to move in the Y direction.

The lifting device 4 is arranged on the bottom surface of the slide block of the Y-direction slide rail 3 and used for moving the whole installed part up and down, generally realized by a cylinder, a lead screw pair or a slide rail, and meanwhile, the lifting device 4 is divided into a fixed end and a movable end according to whether the movement is in the Z direction.

The bottom surface of the movable end of the lifting device 4 is provided with a plurality of positioning pins 5, the shape of the positioning pins is cylindrical, and the positioning pins partially extend out to form a two-step bottom surface, the positioning pins are connected to the bottom of the lifting device 4 through threads, in the installation process, part of the positioning pins 5 are mainly positioned through abutting against the step surfaces, therefore, in some embodiments, the heights of the positioning pins 5 can be adjusted through top threads to adapt to the changed top surface of the fender connecting piece 1, part of the positioning pins 5 are directly inserted into corresponding holes to perform positioning in XY two directions, in some embodiments, threads are arranged at the bottoms of the positioning pins 5 to be more tightly connected with the corresponding positioning holes, in particular, in the embodiment shown in figures 1 and 3, the positioning pins 5 are matched with the three-way supporting positioning holes 13, in the embodiment, the positioning pins 5 are inserted into the three-way supporting positioning holes 13, and abut against the top surfaces of the three-way supporting positioning holes 13 through the bottom surface of the movable end of the lifting device 4, positioning in three directions is realized.

The clamping mechanism 6 is disposed on a side surface of the lifting device 4, specifically, located in the front direction of X in the embodiment shown in fig. 3, and generally has a portion extending into the bottom of the fender attachment 1, after the positioning pin 5 is inserted into the corresponding positioning hole through the lifting device 4, the step surface of the positioning pin fixes the Z direction, and then the clamping mechanism 6 is activated to clamp the fender attachment 1 from the bottom surface of the Z direction.

When the fender attachment 1 is provided with the XZ bidirectional positioning hole 16 and the Z-direction positioning plane 15, in some preferred embodiments, the positioning pin 5 is also matched with the XZ bidirectional positioning hole 16, specifically, in the embodiment shown in fig. 1, the XZ bidirectional positioning hole 16 is an oblong hole, the radius of the circular portion of the oblong hole is the same as that of the three-way support positioning hole 13, and in some embodiments, the diameters of the XZ bidirectional positioning hole 16 and the three-way support positioning hole 13 are the same and are round holes. The XZ bidirectional positioning hole 16 and the three-way supporting positioning hole 13 are matched with the positioning pin 5 in size, positioning accuracy is improved, and the Z-direction positioning plane 15 is positioned by abutting against the bottom surface of the positioning pin 5 and is the same as other surfaces of the fender connecting piece 1, so that repeated description is omitted.

The clamping mechanism 6 in the foregoing embodiments has various implementation means such as a cylinder rising from the bottom, a lead screw pair, and the like, but is too automated to be advantageous for a worker to adjust and control in precision assembly.

In some preferred embodiments, therefore, the clamping mechanism 6 comprises a manual clamping cylinder 61 and a hold-down block 62.

Specifically, as shown in fig. 3 and 4, the manual clamping cylinder 61 is provided with a handle, and the pressure and the air can be pressurized and exhausted through the handle, so that a worker can conveniently control the clamping and the releasing of the clamped fender attachment 1. The bottom is through bolted connection's compact heap 62 at manual die clamping cylinder 61 output, in the embodiment shown in fig. 3, fender connecting piece 1 has Z to locating plane 15, in order to prevent that fender connecting piece 1's arc structure from being crushed, set compact heap 62 into a rectangular shape square, predetermine to support the pressure position in Z to locating plane 15 bottom, simultaneously with locating pin 5's butt position corresponding, it must distribute locating pin 5 to support the regional Z top side at compact heap 62 butt, prevent to damage fender connecting piece 1 in supporting the pressure process, can the similar setting adjust compact heap 62Z to the top surface to with fender connecting piece 1Z to bottom surface looks adaptation in other embodiments.

In the practical process, the inventor finds that the fender connecting piece 1 needs to be supported by hands for adjustment when the fender connecting piece is aligned and pressed, which is inconvenient and risks that workers are pressed by the clamping mechanism 6.

In order to solve the problem, the inventor considers that most of the fender attachments 1 are made of iron or iron alloy, in some preferred embodiments, magnets are arranged on the Z-direction top surfaces of the pressing blocks 62 and the Z-direction bottom surfaces of the positioning pins 5, specifically, in the embodiment shown in fig. 3 and 4, the magnetic force only just adsorbs the fender attachments 1 and has a certain attenuation margin, so that workers can adsorb the fenders without falling off, the fenders do not need to support the fender attachments 1, and the fenders do not take much labor when adjusting the fender attachments 1.

When the inventor develops a specific use method, the part which is most difficult to be butted accurately is the connecting part of the fender connecting piece 1 and the frame, because the fender connecting piece 1 has certain elasticity, the fender connecting piece 1 is required to be always pressed against the side face of the frame in the installation process, and workers are labor-consuming in installation.

To solve this problem, in some preferred embodiments, a thrust device is provided between the slider of the Y-slide 3 and the main frame 2.

In the embodiment shown in fig. 3 in particular, the thrust means is a spring with a spring force sufficient to cause the fender attachment 1 to abut against the side of the frame in the Y-direction. In some embodiments, the pushing device is driven by a cylinder, a cylinder or a screw rod for more convenient control, and can be retracted quickly when not needed, and the spring does not need to be pulled back when the device is installed or withdrawn.

The accuracy of the lifting device 4 needs to be guaranteed in view of the fact that only the Z-direction is positioned completely by means of the movable lifting device 4 during the whole installation process, and that both the X-direction and the Y-direction have relatively fixed references.

Therefore, in some preferred embodiments, the lifting device 4 includes a track plate 41, a Z-slide rail 42, a working plate 43, a working block 44, and a Z-telescopic cylinder 45.

Specifically, as shown in fig. 3 and 4, the track plate 41 is a vertical flat plate, i.e., generally, the Z direction is vertical, the Z direction slide rail 42 is disposed along the direction of the track plate 41, the Z direction slide rail 42 further has a slide block, the working plate 43 is disposed on the slide block, the direction is downward toward the Z direction, the working block 44 is disposed at the bottom end of the working plate 43, and meanwhile, in order to prevent the slide block on the Z direction slide rail 42 from coming off and also play a role in positioning, a stopper 421 is disposed at the Z direction bottom of the Z direction slide rail 42.

In the embodiment shown in fig. 3 and 4, the operating plate 43 is in the shape of a short and thick L, partially protruding forward in the direction X, and the clamping mechanism 6 is arranged on the end face of the protruding end; the shape of the working block 44 is generally L-shaped, the short side is fixed on the side of the working plate 43, the short side is protruded from the bottom surface of the working plate 43, the positioning pin 5 is installed on the protruded portion, and the specific protruding length and the installation position are determined according to the shape of the selected fender panel connecting member 1, and the positioning pin 5 is required to cover the Z-direction connecting plane in this embodiment and is inserted into the three-direction support positioning hole 13 and the XZ two-direction positioning hole 16, thereby the working block 44 is arranged at the corresponding position.

The Z-direction telescopic cylinder 45 is generally disposed on the bottom surface of the slider or the track plate 41, and in the embodiment shown in fig. 3, disposed on the track plate 41, and the corresponding track plate 41 is shaped into a T for balancing the stress, the cylinder portion of the Z-direction telescopic cylinder 45 is fixed at the corner of the T, and the movable end of the Z-direction telescopic cylinder 45 is connected to the top end of the working plate 43.

In the present embodiment, the accuracy of the Z-direction sliding movement of the operating plate 43 is determined by the Z-direction telescopic cylinder 45, the finally lowered height is determined by the stopper 421, and the Z-direction movement of the operating plate 43 is prevented from being deviated by the Z-direction slide rail 42, so that the high-accuracy lifting device 4 is finally obtained.

The embodiment also provides an installation method for the installation tool, which comprises the following steps:

s1, adjusting the extending length of positioning pins 5 of an installation tool, installing one positioning pin 5 in a three-way supporting positioning hole 13 of a fender connecting piece 1, and enabling the rest positioning pins to abut against different positions of the top surface of the fender connecting piece 1;

s2, adjusting a clamping mechanism 6, and fixing the fender connecting piece 1 by using the clamping mechanism 6 and a positioning pin 5;

s3, sliding the Y-direction slide rail 3 to enable the fender connecting piece 1 to be tightly abutted to the frame;

s4, connecting the first Y-direction supporting tightening hole 11 and the second Y-direction supporting tightening hole 12 with the frame;

s5, connecting the fender connecting holes 14 with the front lower support of the fender by using connecting pieces;

and S6, the connection between the positioning pin 5 and the fender connecting piece 1 is released, the clamping mechanism 6 is loosened, and the lifting device 4 is started, so that the lifting device 4 is lifted, and the installation is completed.

Specifically, in an embodiment of the mounting tool shown in fig. 3, the mounted workpiece is an embodiment of the fender attachment 1 shown in fig. 1, and the mounting tool includes the following steps:

s101, mounting the positioning pin 5 at the bottom of the lifting device 4, wherein the size of an opening at the bottom of the lifting device 4 is adjusted in advance, so that the height of the positioning pin 5 does not need to be adjusted manually and repeatedly, then a worker pulls the mounting tool away from the frame, the fender connecting piece 1 is adsorbed on the bottom surface of the positioning pin 5, and meanwhile, the positioning pin 5 is inserted into the three-way supporting positioning hole 13 and the XZ bidirectional positioning hole 16 to complete primary positioning;

s201, a handle of the manual clamping cylinder 61 is broken off, the pressing block 62 is lifted, and the fender connecting piece 1 is clamped and fixed through the pressing block 62 and the positioning pin 5, in the embodiment, due to the existence of the Z-direction positioning plane 15, the pressing block 62 can be adjusted to be below the Z-direction positioning plane 15 in advance and then clamped, so that the upwarping part of the fender connecting piece 1 is prevented from being damaged by pressing;

s301, loosening the pulling of the mounting tool, and driving the fender connecting piece 1 to abut against the frame by the mounting tool under the action of a spring of the thrust device;

s401, fine-tuning the relative positions of the fender connecting piece 1 and the frame to enable the first Y-direction supporting tightening hole 11 and the second Y-direction supporting tightening hole 12 to be aligned with corresponding holes in the frame. However, in general cases, after steps S101-S301, the first Y-direction support fastening hole 11 and the second Y-direction support fastening hole 12 are properly aligned with corresponding holes on the frame, and in general cases, the first Y-direction support fastening hole 11 and the second Y-direction support fastening hole 12 are through holes and no adjustment is needed. The fender connecting piece 1 is connected with the frame through the connecting piece, the handle of the manual clamping cylinder 61 needs to be broken off at some time to loosen the clamping of the fender connecting piece 1, the adjustment with larger amplitude is convenient, the height of the lifting device 4 needs to be finely adjusted if necessary, the deviation generated in the operation process is eliminated, and the whole fender connecting piece 1 is free from obvious external force;

s501, connecting the fender connecting hole 14 with the front and lower supports of the fender by using a connecting piece, finely adjusting the height of the lifting device 4 and the alignment condition of the first Y-direction supporting tightening hole 11 and the second Y-direction supporting tightening hole 12 according to the actual condition, and eliminating operation errors so as to ensure that the stress condition of the fender connecting piece 1 conforms to the preset lower front support;

s601, releasing the manual clamping cylinder 61, enabling the pressing block 62 to extend downwards, lifting the whole installation tool through the lifting device 4, lifting the main frame 2 after the whole vehicle structure is installed, sending out the frame for installation, and enabling the installation tool and other vehicle structures not to interfere.

The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention.