1. The utility model provides a suspension type self-supporting levelling device which characterized in that: the device comprises a supporting leveling mechanism, a leveling platform, a hook seat, a hook, a hanging ring, a top plate, an electronic level meter and a driving mechanism;

the supporting and leveling mechanisms are divided into three groups which are connected to the leveling platform, and the central axes of the three groups of supporting and leveling mechanisms are positioned on the same cylindrical surface and are uniformly distributed at 120 degrees; the three groups of support leveling mechanisms are respectively composed of a lifting screw and a screw mounting seat assembly, the screw mounting seat assembly is in threaded fit with the lifting screw through a central threaded hole, and the top of the lifting screw is positioned below the top plate; the geometric center of the leveling platform is positioned on the central line of the cylindrical surface; the hook seat is fixed at the middle position of the upper end of the leveling platform, the hook is relatively rotatable with the hook seat through a rotating shaft and is connected in a limiting manner along the plane direction, and the center line of the rotating shaft is vertically intersected with the center line of the cylindrical surface; the lower end of the top plate is fixedly connected with a lifting ring, the lifting ring is in hooking fit with a hook head of a hook, so that the leveling platform is suspended below the top plate, and a connecting flange for mounting equipment is arranged on the periphery of the leveling platform;

the three driving mechanisms are uniformly distributed at the lower end of the leveling platform along the circumferential direction and are in driving connection with the three support leveling mechanisms respectively;

and the electronic level meter is arranged in the middle of the lower end of the leveling platform.

2. The suspended self-supporting leveling device of claim 1, wherein: the screw rod mounting seat assembly comprises a hollow shaft provided with an internal thread hole, a bearing seat and a guide sleeve; the bearing seat is vertically fixed on the leveling platform, and the hollow shaft is coaxially and rotatably arranged in an inner hole of the bearing seat through a bearing; the guide sleeve is a flange sleeve provided with a central hole, and the guide sleeve is coaxially and fixedly arranged at the top of the bearing block; the lifting screw penetrates into the inner threaded hole of the hollow shaft and is screwed with the inner threaded hole of the hollow shaft, and the upper part of the lifting screw penetrates out of the central hole of the guide sleeve.

3. The suspended self-supporting leveling device of claim 2, wherein: the top of the lifting screw rod is in a conical shape.

4. The suspended self-supporting leveling device of claim 2, wherein: two inner guide planes along the axial direction are symmetrically arranged on the lifting screw rod, two outer guide planes along the axial direction are symmetrically arranged on the central hole of the guide sleeve, and the two outer guide planes are respectively in surface contact with the two inner guide planes.

5. The suspended self-supporting leveling device of claim 1, wherein: each group of driving components comprises a driving motor, a motor mounting rack, a worm and a worm wheel; the motor mounting bracket is fixedly mounted at the lower end of the leveling platform, the driving motor is fixedly connected onto the motor mounting bracket, the worm is fixedly connected onto an output shaft of the driving motor, the worm wheel is coaxially fixed on or integrally arranged at the lower end of the hollow shaft of the corresponding screw mounting seat component, and the worm wheel is meshed with the worm.

Background

In the prior art, many devices, such as theodolites and north finders, need to be accurately leveled and stably supported to reliably operate. For equipment that works on the ground, several support columns with adjustable heights are usually used to adjust the relative attitude of the equipment to the horizontal and at the same time provide stable support for the equipment. However, in some special occasions, such as underground roadways, the ground is rugged and does not have the condition for arranging equipment, the equipment needs to be hung on a movable top plate to work, the posture of the equipment is difficult to maintain horizontal and keep stable due to the lack of support of the equipment relative to the ground and the change of the inclination angle of the top plate, the existing support leveling mechanism is difficult to meet the requirement of the working condition, and a novel support leveling mechanism needs to be developed. In addition, along with the improvement of the requirement on the automation degree of the equipment, the traditional operation of observing the bubble manual leveling through human eyes has more and more limitations, a motor is used as a driving source, and the level information is fed back by combining an electronic inclination angle measuring device, so that the automatic leveling is realized, and the method is also the direction for improving and lifting the current technology.

Disclosure of Invention

Aiming at the practical requirements and the defects of the prior art, the invention provides a suspension type automatic support leveling mechanism which can accurately level and stably support equipment suspended on a movable top plate, the whole process is automatically finished without manual participation; the mechanism provides stable and reliable working conditions for the working equipment needing to be leveled, and can improve the automation level of operation.

The utility model provides a suspension type self-supporting levelling device which characterized in that: the device comprises a supporting leveling mechanism, a leveling platform, a hook seat, a hook, a hanging ring, a top plate, an electronic level meter and a driving mechanism;

the supporting and leveling mechanisms are divided into three groups which are connected to the leveling platform, and the central axes of the three groups of supporting and leveling mechanisms are positioned on the same cylindrical surface and are uniformly distributed at 120 degrees; the three groups of support leveling mechanisms are respectively composed of a lifting screw and a screw mounting seat assembly, the screw mounting seat assembly is in threaded fit with the lifting screw through a central threaded hole, and the top of the lifting screw is positioned below the top plate; the geometric center of the leveling platform is positioned on the central line of the cylindrical surface; the hook seat is fixed at the middle position of the upper end of the leveling platform, the hook is relatively rotatable with the hook seat through a rotating shaft and is connected in a limiting manner along the plane direction, and the center line of the rotating shaft is vertically intersected with the center line of the cylindrical surface; the lower end of the top plate is fixedly connected with a lifting ring, the lifting ring is in hooking fit with a hook head of a hook, so that the leveling platform is suspended below the top plate, and a connecting flange for mounting equipment is arranged on the periphery of the leveling platform;

the three driving mechanisms are uniformly distributed at the lower end of the leveling platform along the circumferential direction and are in driving connection with the three support leveling mechanisms respectively;

and the electronic level meter is arranged in the middle of the lower end of the leveling platform.

Further: the screw rod mounting seat assembly comprises a hollow shaft provided with an internal thread hole, a bearing seat and a guide sleeve; the bearing seat is vertically fixed on the leveling platform, and the hollow shaft is coaxially and rotatably arranged in an inner hole of the bearing seat through a bearing; the guide sleeve is a flange sleeve provided with a central hole, and the guide sleeve is coaxially and fixedly arranged at the top of the bearing block; the lifting screw penetrates into the inner threaded hole of the hollow shaft and is screwed with the inner threaded hole of the hollow shaft, and the upper part of the lifting screw penetrates out of the central hole of the guide sleeve.

Further, the method comprises the following steps: the top of the lifting screw rod is in a conical shape.

Further, the method comprises the following steps: two inner guide planes along the axial direction are symmetrically arranged on the lifting screw rod, two outer guide planes along the axial direction are symmetrically arranged on the central hole of the guide sleeve, and the two outer guide planes are respectively in surface contact with the two inner guide planes.

Further: each group of driving components comprises a driving motor, a motor mounting rack, a worm and a worm wheel; the motor mounting bracket is fixedly mounted at the lower end of the leveling platform, the driving motor is fixedly connected onto the motor mounting bracket, the worm is fixedly connected onto an output shaft of the driving motor, the worm wheel is coaxially fixed on or integrally arranged at the lower end of the hollow shaft of the corresponding screw mounting seat component, and the worm wheel is meshed with the worm.

The invention has the following advantages:

1. the supporting and leveling device adopts a suspension type design, bears gravity through a suspension point, realizes stable support of the leveling platform by utilizing the principle that three points determine a plane, and adjusts the lengths of different lifting screws to adapt to top plates with different heights and inclination angles. The mechanism is reliable in support, convenient to mount and dismount with the top plate, and capable of changing the limitation that the prior art only can use the ground as the support, and expanding the application scene of the equipment.

2. The supporting and leveling device adopts a symmetrical design, and the gravity center is coincident with the geometric center and is positioned below the suspension point, so that the stress of each supporting point is consistent in the working process. The driving mechanism adopts worm and gear transmission, and has the characteristics of low speed, large torque and stable transmission, so that the leveling mechanism is more accurate and stable in the leveling process and can bear heavier load.

3. The support leveling mechanism is driven by three groups of direct current motors, and is combined with an electronic level gauge to serve as an inclination angle feedback device, so that the electric leveling of the leveling platform can be realized, manual participation is not needed, and the automation degree of the system is improved.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention;

in the figure, 1, a leveling mechanism is supported; 2. leveling the platform; 3. a hook base; 4. a rotating shaft; 5. hooking; 6. a hoisting ring; 7. a top plate;

FIG. 2 is a schematic front sectional view of the present invention;

in the figure, 8, an electronic level; 9. a drive mechanism; 101. a lifting screw; 102. a hollow shaft; 103. a bearing; 104. a bearing seat; 105. locking the nut; 106. a guide sleeve;

FIG. 3 is a schematic bottom view of the present invention;

in the figure, 901, a driving motor; 902. a motor mounting bracket; 903. a worm; 904. a worm gear.

FIG. 4 is a schematic structural view of a lifting screw of the present invention;

in the figure, 101a,

The specific implementation mode is as follows:

the structure of the present invention will be further described by way of examples with reference to the accompanying drawings. It is to be understood that this embodiment is illustrative and not restrictive.

A suspension type automatic supporting leveling device, please refer to fig. 1-4, its invention points are: the device comprises a supporting leveling mechanism 1, a leveling platform 2, a hook seat 3, a hook 5, a lifting ring 6, a top plate 7, an electronic level meter 8 and a driving mechanism 9.

The supporting and leveling mechanisms are three groups and are all connected to the leveling platform, and the central axes of the three groups of supporting and leveling mechanisms are positioned on the same cylindrical surface and are uniformly distributed at 120 degrees. The three groups of supporting and leveling mechanisms are composed of lifting screws 101 and screw rod mounting seat assemblies, the screw rod mounting seat assemblies are in threaded fit with the lifting screws through central threaded holes, and the tops of the lifting screws are located below the top plate. The geometric center of the leveling platform is positioned on the central line of the cylindrical surface. The hook seat is fixed at the middle position of the upper end of the leveling platform. Specifically, the hook base can be formed by two L-shaped bent plates which are arranged back to back. The vertical edges of the two L-shaped bent plates are provided with rotating shafts. The hook is connected with the hook seat in a mode that the hook can rotate relatively through the rotating shaft 4 and is limited along the plane direction, namely, the hook can only rotate around the rotating shaft but can not move horizontally. The central line of the rotating shaft is vertically crossed with the central line of the cylindrical surface. The lower end of the top plate is fixedly connected with a hanging ring, the hanging ring is in hook connection and matching with a hook head of a hook, so that the leveling platform is suspended below the top plate, and a connecting flange is arranged on the periphery of the leveling platform and can be used for installing equipment with various purposes.

The driving mechanisms are three groups, the three groups of driving mechanisms are uniformly distributed at the lower end of the leveling platform along the circumferential direction, and the three groups of driving mechanisms are in driving connection with the three groups of supporting leveling mechanisms respectively. Namely, the driving mechanism respectively drives the lifting screws in the three groups of supporting and leveling mechanisms to move up and down.

The electronic level meter is arranged at the middle position of the lower end of the leveling platform and has the following functions: for outputting the inclination angle of the levelling platform relative to the horizontal.

The screw mount assembly includes a hollow shaft 102 having an internally threaded bore, a bearing block 104, and a guide sleeve 106. The leveling platform is provided with three mounting holes which are uniformly distributed along the circumferential direction, the lower end parts of three bearing seats are respectively inserted into the three mounting holes, and the bearing seats are vertically fixed on the leveling platform through a plurality of screws connected to the peripheral flange part at the upper part of the bearing seats. The hollow shaft is coaxially and rotatably installed in an inner hole of the bearing seat through two bearings 103 which are arranged up and down, the limit of the lower bearing can be realized through the matching of a step surface arranged in the inner hole of the bearing seat and a limit surface arranged on the peripheral surface of the hollow shaft, and the limit of the upper bearing can be realized through the matching of a step surface arranged in the inner hole of the bearing seat and a locking nut 105 fixedly connected on the hollow shaft through thread matching. The guide sleeve plays a role in guiding the lifting screw to move up and down, the lifting screw is prevented from rotating, the structure of the guide sleeve is a flange sleeve provided with a center hole, and the guide sleeve is coaxially and fixedly installed at the top of the bearing seat. The lifting screw penetrates into the inner threaded hole of the hollow shaft and is screwed with the inner threaded hole of the hollow shaft, and the upper part of the lifting screw penetrates out of the central hole of the guide sleeve.

The top 101a of the lifting screw is preferably tapered to approach point contact to ensure stability when contacting the top plate.

The engagement between the lifting screw and the guide sleeve is preferably, but not limited to, the following:

two inner guide planes 101b along the axial direction are symmetrically arranged on the lifting screw rod, two outer guide planes along the axial direction are symmetrically arranged on the central hole of the guide sleeve, and the two outer guide planes are respectively in surface contact with the two inner guide planes.

Each set of drive components includes a drive motor 901, a motor mount 902, a worm 903, and a worm wheel 904. The motor mounting bracket is fixedly mounted at the lower end of the leveling platform, the driving motor is fixedly connected onto the motor mounting bracket, the worm is fixedly connected onto an output shaft of the driving motor, the worm wheel is coaxially fixed on or integrally arranged at the lower end of the hollow shaft of the corresponding screw mounting seat component, and the worm wheel is meshed with the worm.

The suspension type automatic supporting leveling mechanism has the following specific working principle and implementation mode:

the leveling platform is firstly hung on the hanging ring through the hook, the top ends of the three lifting screws are not in contact with the lower end of the top plate at the moment, and the leveling platform is in a horizontal hanging state under the action of gravity and the hanging of the hook. When the automatic support is adjusted, the three groups of driving motors rotate clockwise to drive the corresponding worms to rotate, the worms drive worm wheel shafts to rotate, and the lifting screw moves upwards due to the limitation of the guide planes on the lifting screw and the guide sleeve. When the lifting screw rod is contacted with the top plate, the resistance force enables the output current of the corresponding driving motor to be rapidly increased, the driving motor stops rotating, and the lifting screw rod stops moving; after the three groups of lifting screws are in contact with the top plate, the leveling platform is stably supported with the top plate and is in a horizontal state through three-point support and suspension of the middle hook. In the jacking and supporting process of the lifting screw rods, the electronic level meter can monitor the levelness of the leveling platform in real time, and when the levelness of the leveling platform is larger than a preset threshold value, the levelness can meet the preset threshold value by adjusting the different heights of the three lifting screw rods.

If the inclination angle of the top plate is changed due to external force, the electronic level meter can monitor the change of the levelness of the leveling platform, at the moment, the three groups of driving motors rotate anticlockwise, the lifting screw rods all descend and are separated from the top plate, and the driving motors stop; under the action of gravity, the leveling platform is restored to a horizontal suspension state again, and the leveling and stable support of the leveling platform can be realized again by repeating the automatic support leveling process.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit of the invention and the scope of the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.