1. A cutting assembly, comprising:

a cutting head (102);

the tooth holder (104) is arranged on the cutting head (102);

the cutting teeth (106) are arranged on the tooth holder (104), an included angle between one side of each cutting tooth (106) and the surface of the cutting head (102) is an obtuse angle, and an included angle between the other side of each cutting tooth (106) and the surface of the cutting head (102) is an acute angle;

the nozzle (108) is arranged on the tooth holder (104), the nozzle (108) is used for spraying water for cooling the cutting teeth (106),

wherein the nozzles (108) are located on a side of the cutter teeth (106) that is at an obtuse angle to the surface of the cutter head (102).

2. Cutting assembly according to claim 1,

the cutting assembly has a cutting contour line (116), the cutting contour line (116) extends from a crest of the cutting teeth (106) to a roof of the tooth holder (104);

the distance of the nozzle (108) to the surface of the cutting head (102) is less than the distance of the cutting profile line (116) to the surface of the cutting head (102).

3. Cutting assembly according to claim 1 or 2,

the nozzle (108) is arranged obliquely to the cutting teeth (106).

4. Cutting assembly according to claim 1 or 2,

the distance between the extension line of the axis of the nozzle (108) and the tooth top of the cutting teeth (106) is more than or equal to 2mm and less than or equal to 4 mm.

5. Cutting assembly according to claim 1 or 2,

the atomization angle of the nozzle (108) is greater than or equal to 30 degrees and less than or equal to 60 degrees.

6. Cutting assembly according to claim 1 or 2,

the nozzle (108) is detachably provided on the tooth holder (104).

7. Cutting assembly according to claim 1 or 2,

a water channel (110) is arranged in the tooth holder (104), and the water channel (110) is communicated with the nozzle (108).

8. Cutting assembly according to claim 1 or 2,

the number of the tooth holders (104) is multiple, and the tooth holders (104) are arranged at intervals;

the number of the cutting teeth (106) is multiple, and each cutting tooth (106) is connected to one tooth holder (104).

9. A cutting arm, comprising:

a connecting rod (112);

the cutting assembly of any one of claims 1 to 8, being connected to the connecting rods (112).

10. A work apparatus, comprising:

a body (114);

the cutting arm of claim 9, connected to the body (114).

Background

The nozzle of the heading machine is positioned on the cutting head body, and a water nozzle needs to be drilled and installed on the cutting head 102 'so as to spray cooling water to the front part between the teeth of the cutting teeth 106' (spraying towards the front part) for cooling the cutting teeth, thereby prolonging the service life of the cutting teeth.

As shown in fig. 1, some heading machines pick holders include a holder 104' that defines a pick mounting hole. One side of the block 104 ' extends upward to form an L-shaped structure, and a water nozzle facing the front of the tip of the cutting pick 106 ' is arranged on the extended block 104 '. The nozzle of the heading machine pick holder is positioned below the pick holder, when silt is settled, the nozzle is easily blocked, the heading machine pick 106' cannot be effectively cooled, and the service life of the heading machine pick can be shortened by continuing to work. The nozzle is also inconvenient to replace after being blocked.

Disclosure of Invention

The embodiment of the application aims to solve the technical problem that a nozzle of a heading machine pick box is easy to be blocked.

In view of the above, an object of the present application is to provide a cutting assembly.

It is another object of the present application to provide a cutting arm.

It is a further object of the present application to provide a work apparatus.

To achieve the above object, an embodiment according to a first aspect of the present application provides a cutting assembly comprising: a cutting head; the tooth holder is arranged on the cutting head; the cutting teeth are arranged on the tooth holder, an included angle between one side of each cutting tooth and the surface of the cutting head is an obtuse angle, and an included angle between the other side of each cutting tooth and the surface of the cutting head is an acute angle; the nozzle is arranged on the toothholder and used for spraying water for cooling the cutting teeth, wherein the nozzle is positioned on one side of the cutting teeth, which is at an obtuse angle, with the surface of the cutting head.

In an embodiment of the application, the cutting assembly includes a cutting head, a pick holder, cutting teeth, and a nozzle. The nozzle is arranged on the tooth holder, so that the nozzle can spray water to cool the cutting teeth, and the service life of the cutting teeth is prolonged. Specifically, when the cutting head is in a rotating state during operation, the cutting teeth on the upper surface of the cutting head can cut rocks or soil of an operation target. The cutting head is provided with a toothholder, and the toothholder is used for fixing the cutting teeth, so that the cutting teeth have supports for cutting rocks or soil. When the cutting head works, rocks or soil are easy to be deposited on one side of the acute angle between the cutting teeth and the surface of the cutting head. The nozzle is arranged on the toothholder and positioned at one side in the obtuse angle direction between the surfaces of the cutting teeth and the cutting head, and when the cutting head rotates, the nozzle is protected by the cutting teeth, and the soil converging to the nozzle can be intercepted by the cutting teeth. Therefore, the nozzle is not blocked, and can be adapted and applied to tunneling work in various situations. The cutting teeth and rock or soil are in a large amount of contact friction, the temperature of the surface of the cutting teeth can be sharply increased, the cutting teeth in the state are easy to deform and damage, and smooth operation is not facilitated. At the moment, the nozzle on the tooth holder sprays cooling water on the surface of the cutting tooth, so that the temperature of the cutting tooth can be effectively reduced, and the service life of the cutting tooth is prolonged.

In addition, the technical scheme provided by the application can also have the following additional technical characteristics:

in the technical scheme, the cutting assembly is provided with a cutting contour line, and the cutting contour line extends from the tooth top of the cutting teeth to the seat top of the tooth seat; the distance from the nozzle to the surface of the cutting head is smaller than the distance from the cutting contour line to the surface of the cutting head.

In the technical scheme, the cutting assembly is provided with a cutting contour line. The cutting contour line is determined by the positions of the tooth tops of the cutting teeth and the tooth tops of the tooth holders. When the cutting head rotates, soil is gathered on an acute angle surface formed by the toothholder and the cutting teeth, and the cutting teeth intercept the soil blocking the nozzle, so that the nozzle cannot be blocked. Or can understand that under the high-speed rotation of the cutting head, the tooth tops of the cutting teeth and the obtuse angle part of the tooth holder are connected into a cutting contour line, so that the area in front of the nozzle is in a normally empty state, and the nozzle is prevented from being blocked by soil. The position where the cutting head is least easy to block during working is on the cutting contour line. The distance from the nozzle to the surface of the cutting head is smaller than the distance from the cutting contour line to the surface of the cutting head, so that the nozzle is not easy to contact with silt, and the blockage of the nozzle mouth caused by silt deposition can be reduced to the greatest extent.

In the technical scheme, the nozzle is obliquely arranged towards the cutting teeth.

In the technical scheme, the nozzle is arranged on the tooth holder and is obliquely arranged towards the cutting teeth. Thus, the water spraying direction of the nozzle is convenient to align to the tooth tops of the cutting teeth. When the cutting head works, the surface temperature of the tooth tops of the cutting teeth is higher, and the nozzles spray water to the tooth tops of the cutting teeth, so that the surface temperature of the cutting teeth can be effectively reduced, and the service life of the cutting teeth is prolonged.

In the technical scheme, the distance between the extension line of the axis of the nozzle and the tooth top of the cutting tooth is more than or equal to 2mm and less than or equal to 4 mm.

In this technical scheme, in the actual operation, the dynamics of nozzle water spray all can influence actual water spray scope with receiving the action of gravity, has the interval between the extension line of the axis of nozzle and the addendum of cutterhead, is favorable to controlling the nozzle better and spouts the cooling water to the addendum of cutterhead to effectively cool down the addendum of cutterhead. Wherein, the distance between the extension line of the axis of the nozzle and the tooth top of the cutting tooth is more than or equal to 2mm and less than or equal to 4 mm. By limiting the distance, the water spraying cooling of the nozzle to the tooth tops of the cutting teeth can be guaranteed, the coverage of most areas of the cutting teeth is facilitated, and the cooling effectiveness is improved.

In the technical scheme, the atomization angle of the nozzle is more than or equal to 30 degrees and less than or equal to 60 degrees.

In this technical scheme, the atomizing angle undersize of nozzle can make the water spray scope littleer, is difficult to guarantee to the comprehensive cover of cooling position. Too big atomizing angle of nozzle can make the water spray scope too big, is difficult to the cooling effect to the cooling position. The atomizing angle of the nozzle is more than or equal to 30 degrees and less than or equal to 60 degrees, the cutting teeth can be completely covered, the cooling effect cannot be reduced, the cutting teeth can be further protected, and the service life of the cutting teeth is prolonged. The atomization angle is more than or equal to 30 degrees and less than or equal to 60 degrees, and the cooling range and the cooling effect can be ensured in the range.

In the above technical solution, the nozzle is detachably provided on the gear seat.

In this technical scheme, the nozzle can set up on the toothholder with loading and unloading, is favorable to adjusting the water spray direction of nozzle better for cooling water can be better to cutting the root tooth and cool down. In addition, the installation, the disassembly, the maintenance and the replacement of the nozzle are facilitated, so that the service life of the cutting pick assembly is ensured.

In the technical scheme, a water channel is arranged in the tooth holder and is communicated with the nozzle.

In the technical scheme, a water channel is arranged in the tooth holder, and cooling water can be sprayed out from the nozzle through the water channel. It can be understood that the water channel is arranged in the cutting pick assembly, the cutting pick assembly provides protection for the water channel, the water channel is prevented from being damaged by the outside, and smooth implementation of cooling is facilitated.

In the technical scheme, the number of the tooth holders is multiple, and the tooth holders are arranged at intervals; the number of the cutting teeth is multiple, and each cutting tooth is connected to one tooth holder.

In this technical scheme, can understand, the cutterhead realizes the cutting of rock or earth through the rotation cutting teeth. The increase of the number of the cutting teeth can improve the cutting effect. Therefore, the cutting head can be provided with a plurality of tooth holders, and the tooth holders are used for fixing the cutting teeth so as to ensure the cutting strength. Correspondingly, a plurality of cutting teeth are matched with the toothholder, and each cutting tooth is connected to one toothholder and used for enhancing the cutting effect of the cutting head. Too dense cutting teeth can affect the working efficiency of the cutting head and the service life of the cutting teeth, so that a plurality of tooth holders are arranged at intervals.

An embodiment of a second aspect of the present application provides a cutting arm, comprising a connecting rod and a cutting assembly according to any one of the above-mentioned first aspect. The cutting assembly is connected with the connecting rod.

In this technical scheme, through adopting the cutting assembly of any one of above-mentioned technical scheme to have had above-mentioned technical scheme's whole beneficial effect, no longer repeated here. The cutting assembly is connected with the connecting rod, and the cutting arm can control the operation direction of the cutting head.

An embodiment of a third aspect of the present application provides a working device, comprising a body and a cutting arm according to any one of the above-mentioned second aspect, the cutting arm being connected to the body.

In this technical scheme, through adopting the cutting arm of any one above-mentioned technical scheme to have above-mentioned technical scheme's whole beneficial effect, no longer describe here. The cutting arm is connected with the body, so that the cutting arm can be better controlled by the operation equipment.

Additional aspects and advantages of embodiments in accordance with the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments in accordance with the application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a structure of a cutter head according to the related art.

The correspondence between the reference numerals and the part names of fig. 1 is:

102': a cutting head; 104': a tooth holder; 106': a cutting pick.

Figure 2 is a front view schematic of a cutting assembly according to one embodiment of the present application;

figure 3 is a schematic top view of a cutting assembly according to an embodiment of the present application;

figure 4 is a cross-sectional view of a cutting assembly according to one embodiment of the present application;

figure 5 is a perspective view of a cutting assembly according to an embodiment of the present application;

fig. 6 is a block diagram schematically illustrating the structure of a work apparatus according to an embodiment of the present application.

Wherein, the correspondence between the reference numbers and the part names of fig. 2 to 6 is:

1: a working device; 10: a cutting arm; 100: a cutting assembly; 102: a cutting head; 104: a tooth holder; 106: cutting teeth; 108: a nozzle; 110: a water channel; 112: a connecting rod; 114: a body; 116: a cutting contour line.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

Some embodiments of the present application are described below with reference to fig. 2-6.

As shown in fig. 2, 3 and 6, embodiments of the present application propose a cutting assembly 100 comprising a cutting head 102, a pick holder 104, cutting bits 106 and a nozzle 108. Specifically, the block 104 is disposed on the cutting head 102. Cutting teeth 106 are provided on the toothholder 104. The nozzle 108 is arranged on the tooth holder 104, and the nozzle 108 is used for spraying water for cooling the cutting teeth 106. Wherein the nozzle 108 is located on the side of the cutting tooth 106 adjacent thereto. More specifically, the cutting teeth 106 are provided with nozzles 108 on a side that is at an acute angle to the surface of the cutting head 102. While the angle between the other side of the cutter teeth 106 and the surface of the cutter head 102 is obtuse.

As shown in fig. 2 and 6, a cutting assembly 100 provided in accordance with an embodiment of the first aspect of the present application includes a cutting head 102, a pick holder 104, cutting bits 106, and a nozzle 108. The cutting head 102 is rotated during operation such that the plurality of cutting teeth 106 on the cutting head 102 contact the rock or earth by rotating the cutting head 102. The cutting teeth 106 are more capable of cutting and crushing rock or earth for cutting purposes. When the cutter head 102 is operating, rock or dirt tends to be directed to the side of the acute angle between the cutter teeth 106 and the surface of the cutter head 102. The nozzles 108 are located on the side of the cutting teeth 106 that is at an obtuse angle to the surface of the cutting head 102. When the cutting head 102 is rotated, the nozzle 108 is on the side of the toothholder 104 that is relatively high in terrain, and the soil that converges toward the nozzle 108 is intercepted by the cutting teeth 106. Therefore, the nozzle 108 is not clogged, and can be adapted and applied to various tunneling works. In the implementation operation, the temperature of the surface of the cutting teeth 106 can rise rapidly along with the continuous friction contact between the cutting teeth 106 and the rock or soil, and the cutting teeth 106 are easy to deform and even be damaged. Therefore, the surface of the cutting tooth 106 needs to be cooled. The nozzles 108 may spray cooling water onto the cutter teeth 106 to facilitate cooling of the surfaces of the cutter teeth 106, thereby extending the useful life of the cutter teeth 106. The cooling water sprayed out of the nozzles 108 can also provide a cleaning effect, and can clean the silt attached to the surface of the cutting teeth 106 to a certain extent, thereby being beneficial to reducing the operation burden of the cutting teeth 106 and further prolonging the service life of the cutting teeth 106.

As shown in fig. 4, in some embodiments, cutting assembly 100 has a cutting contour 116. It will be appreciated that the cutting profile 116 is determined by the location of the crests of the cutting teeth 106 and the crests of the tooth holder 104. Specifically, the cutting profile 116 is a curve connecting the addendum of the cutting tooth 106 and the seating position of the tooth seat 104. When the cutting head 102 rotates, the soil converges toward the acute angle formed by the cutting head 102 and the cutting teeth 106, and the cutting teeth 106 intercept the soil that will block the nozzle 108, so that the nozzle 108 is not easily blocked. Alternatively, it will be appreciated that at high rotational speeds of the cutter head 102, the obtuse angle portions of the tooth tips of the cutting teeth 106 and the tooth base 104 form a cutting contour 116, so that the area in front of the nozzle 108 is normally empty, thereby preventing soil from blocking the nozzle 108. The cutting contour line 116 is the location where the cutting head 102 is least likely to jam during operation. Thus, the nozzles 108 may be positioned within the cutting profile 116 to minimize clogging of the nozzles 108 by sediment deposits. Thus, the nozzle 108 may be positioned on the block 104 on the side of the obtuse angle between the cutting teeth 106 and the surface of the cutting head 102. It will be appreciated that the nozzles 108 provided here also emit cooling water within the protective limits of the cutting contour 116. When the cooling water is sprayed out, the contact condition of the cutting water and the sediment and the crushed stones can be reduced to the greatest extent, so that the cutting teeth 106 can be covered by the cooling water. To ensure cooling coverage of the tips of the cutting teeth 106.

In other embodiments, as shown in figure 4, the nozzles 108 are angled toward the cutting teeth 106. It will be appreciated that the opening of the nozzle 108 is directed in the direction of the cutting teeth 106. Thus, the water spraying path of the nozzle 108 is obviously shortened, and the contact between the cooling water and the sediment and gravel is reduced. Meanwhile, the nozzles 108 are obliquely arranged towards the cutting teeth 106, the water spraying range of water spraying is also reduced, cooling water is easier to contact with the cutting teeth 106, and the coverage rate of the cooling water is effectively improved.

Specifically, in actual operation, the dynamics that nozzle 108 sprayed water all can influence actual water spray scope with receiving the action of gravity, has the interval between the extension of the axis of nozzle 108 and the addendum of cutterhead 106, is favorable to controlling nozzle 108 better and spouts the cooling water to the addendum of cutterhead 106 to effectively cool down the addendum of cutterhead 106. Wherein, the distance between the extension line of the axis of the nozzle 108 and the tooth top of the cutting tooth 106 is more than or equal to 2mm, and less than or equal to 4mm, such as 2mm, 3mm and 4 mm. By limiting this distance, it is advantageous to ensure that the nozzles 108 spray water to cool the cutter teeth 106.

Specifically, too small an atomization angle of the nozzle 108 may result in a smaller spray range, making it difficult to ensure full coverage of the cooling site. Too large an atomization angle of the nozzle 108 may result in too large a water spray range, which may make it difficult to cool the temperature-lowering portion. The atomizing angle of the nozzle 108 is greater than or equal to 30 degrees and less than or equal to 60 degrees, complete coverage of the cutting teeth 106 can be achieved, the cooling effect cannot be reduced, the cutting teeth 106 can be further protected, and the service life of the cutting teeth 106 is prolonged. The atomization angle is more than or equal to 30 degrees and less than or equal to 60 degrees, and the cooling range and the cooling effect can be ensured in the range.

In still other embodiments, as shown in fig. 5, the nozzles 108 are disposed on the toothholder 104, which simplifies the manufacturing process of the cutting head 102 and facilitates the production thereof, compared to the nozzles 108 of a general heading machine disposed on the cutting head 102. On the other hand, the detachable arrangement is beneficial to better adjusting the water spraying direction of the nozzle 108, so that the cooling water can better lower the cutting teeth 106. In addition, the nozzle 108 is detachably arranged on the tooth holder 104, so that the nozzle 108 is convenient to mount, dismount, maintain and replace, and the service life of the cutting pick assembly is guaranteed.

As shown in fig. 4 and 5, a water channel 110 is formed in the tooth holder 104, and cooling water can be sprayed out from the nozzle 108 through the water channel 110. It can be understood that the water channel 110 is disposed inside the cutting assembly 100, and the cutting assembly 100 provides protection for the water channel 110, so as to prevent the water channel 110 from being damaged by the outside, thereby facilitating the smooth implementation of cooling. In this way, water flows through the inside of the pedestal 104, and can be supplied to the nozzle 108. The distance of supplying water is shorter, and rivers are stronger for nozzle 108 water spray atomization effect is better, thereby has promoted the cooling effect effectively.

In still other embodiments, the cutting teeth 106 are caused to tunnel rock or earth in the circumferential direction of the work area by the continued rotation of the cutting head 102. To improve cutting efficiency, a plurality of cutting teeth 106 may be spaced apart on the cutting head 102. Accordingly, a plurality of cutting bits 106 are coupled to a plurality of tooth holders 104, with each cutting bit 106 coupled to one of the tooth holders 104 for increasing the cutting efficiency of the cutting head 102.

A cutting arm 10 is provided according to embodiments of the second aspect of the present application, comprising a connecting rod 112 and a cutting assembly 100 as in any of the embodiments described above. The cutting assembly 100 is connected to a connecting rod 112.

The cutting arm 10 provided by the present application comprises the connecting rod 112 and the cutting assembly 100 of any one of the embodiments of the first aspect, so as to have all the advantages of the embodiments described above, and the description thereof is omitted here. The cutting assembly 100 is connected to a connecting rod 112 and the cutting arm 10 can control the working direction of the cutting head 102.

As shown in figure 6, a work apparatus 1 according to an embodiment of the third aspect of the present application comprises a body 114 and a cutting arm 10 as in any of the embodiments described above. The cutting arm 10 is connected to the body 114.

As shown in fig. 6, the working equipment 1 provided by the present application comprises a body 114 and the cutting arm 10 of any one of the embodiments of the second aspect, so as to have all the advantages of the embodiments, and the description thereof is omitted here. The cutting arm 10 is connected to the body 114.

As shown in fig. 2 to 6, the working apparatus 1 according to one embodiment of the present application comprises a body 114 and a cutting arm 10. The cutting arm 10 includes a connecting rod 112 and a cutting assembly 100. The cutting assembly 100 includes a cutting head 102, a pick holder 104, cutting bits 106, nozzles 108, and a waterway 110.

The least likely location for the cutting head 102 to clog during operation is on the cutting contour 116, and thus the nozzles 108 are positioned within the cutting contour 116 to minimize clogging due to silt deposits. Meanwhile, cooling water flows through the inside of the tooth holder 104, water supply can be achieved, the acting distance is short, the atomization effect is good, and water flow is strong.

As shown in fig. 4, the nozzle 108 is positioned below the cutting profile 116 and above the block 104. As shown in fig. 2, the water path supplies water through the water channel 110 inside the nozzle 108 and is ejected through the nozzle 108 to cool the surface of the cutting bit 106.

As shown in fig. 5, according to the cutting assembly 100 provided in the present application, the water supply path is accessed through the root water hole of the tooth holder 104. A water passage 110 through the pick-up head 104 communicates with the water supply passage of the nozzle 108. The cooling water is sprayed through the nozzle 108. The spray is positioned under the cutting contour line 116, the spray nozzles 108 can be effectively protected, and the cooling water can be sprayed in front of the tooth tops of the cutting teeth 106 (sprayed in front), so that the cooling effect is improved, the service life of the cutting teeth 106 is prolonged, and the use consumption of the cutting teeth 106 is reduced.

The specific embodiment has the following beneficial effects:

1) the nozzle 108 is arranged on the upper portion, so that the risk that the nozzle 108 is blocked due to accumulated materials between the cutting teeth 106 of the head body is reduced.

2) Water is supplied through a water channel 110 arranged in the cutting teeth 106, and the arrangement of a water channel is protected.

3) The distance between the extended axis of the water outlet of the nozzle 108 and the tooth top of the cutting teeth 106 is 2 mm-4 mm. The atomization angle is 30-60 degrees, the cutting teeth 106 can be completely covered, and the cutting teeth 106 are protected.

In this application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.