Mountain rock cutting device

By designing a mountain rock cutting device including rotating blocks, drive components, angle adjustment components and connection components, the problems of cumbersome installation of existing devices and the inability to adjust the cutting angle are solved, rapid installation and angle adjustment are achieved, and cutting efficiency is improved.

CN119928081APending Publication Date: 2025-05-06YUNNAN UNIV
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Patent Information

Application Number
CN202510280209.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2025-05-06

AI Technical Summary

Technical Problem

The existing rock cutting device is cumbersome to install and cannot be adjusted in the cutting angle, which is very limited and difficult to adapt to the cutting needs of different rock shapes.

Method used

A mountain rock cutting device is designed, including a first part and a second part of the cutting device, and the rotation and cutting angle adjustment of the cutting assembly are realized through the combination of a rotating block, a driving assembly, an angle adjustment assembly and a connecting assembly.

Benefits of technology

The device realizes rapid installation and angle adjustment of the cutting device through the movement of the adjustment device, improves installation efficiency and cutting efficiency, and adapts to the cutting needs of different rock shapes.

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Abstract

The invention relates to the field of rock cutting devices, in particular to a mountain rock cutting device which comprises a cutting device first part, a cutting device second part and a carrier mechanical arm, the cutting device first part is rotationally connected with the cutting device second part, and a cutting assembly is arranged on one side of the cutting device first part; the cutting assembly penetrates through the cutting device first part and is movably connected with the cutting device first part, a driving assembly is arranged in the cutting device first part, the driving assembly is connected with the cutting assembly, the driving assembly is used for driving the cutting assembly to rotate, the angle of the device can be adjusted according to the shape of rock, different requirements are met, and the cutting efficiency is improved.
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Description

Technical Field

[0001] The invention relates to the field of rock cutting devices, in particular to a mountain rock cutting device. Background Art

[0002] Mountain rock cutting device is a kind of equipment used to cut various rocks, concrete and other hard materials. It is widely used in mining, construction and geological exploration.

[0003] Most of the existing rock cutting devices are installed on the mechanical arms of mobile equipment such as excavators and loaders. The cutting devices are installed on these mobile equipment to perform vertical cutting and mobile operations. However, the rock cutting devices are generally installed on the mobile equipment through a large number of fixing bolts, and the installation process is cumbersome. At the same time, after the installation is completed, it can only be moved vertically by the mechanical arm, or moved forward and backward by the mobile equipment, and the cutting angle cannot be adjusted, which has great limitations.

[0004] The present invention aims to solve the technical problems existing in the prior art, and for this purpose, proposes a mountain rock cutting device. Summary of the invention

[0005] The object of the present invention is to provide a mountain rock cutting device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A mountain rock cutting device comprises a first cutting device part, a second cutting device part and a carrier mechanical arm, wherein the first cutting device part is rotatably connected to the second cutting device part, a cutting assembly is arranged on one side of the first cutting device part, the cutting assembly passes through the first cutting device part and is rotatably connected to the first cutting device part, a driving assembly is arranged inside the first cutting device part, the driving assembly is connected to the cutting assembly, and the driving assembly is used to drive the cutting assembly to rotate;

[0008] An angle adjustment component is arranged inside the second part of the cutting device, the angle adjustment component is in sliding contact with the second part of the cutting device, the angle adjustment component cooperates with the first part of the cutting device, the angle adjustment component is used to adjust the cutting angle, the cylindrical surface of the second part of the cutting device is threadedly connected to the adjustment device, one end of the angle adjustment component is located in the adjustment device and is in rotational contact with the adjustment device, the adjustment device is used to drive the angle adjustment component to move, and a connecting component is arranged inside the second part of the cutting device, the connecting component is used to connect the carrier robot arm and the second part of the cutting device.

[0009] As a further solution of the present invention: the first part of the cutting device includes a rotating block, a connecting shaft is provided on one side of the rotating block, the rotating block is rotatably connected to the second part of the cutting device through the connecting shaft, a push rod is provided on the cylindrical surface of the connecting shaft, a welding rod is provided on one side of the rotating block, a saw blade protection cover is provided on the other end of the welding rod, a water pipe joint is provided on the side of the saw blade protection cover close to the rotating block, a driving assembly is provided inside the rotating block, and the rotating block is rotatably connected to the cutting assembly.

[0010] As a further solution of the present invention: the driving assembly includes a servo motor, the servo motor is located in the rotating block and fixedly connected to the rotating block, a motor shaft is provided on one side of the servo motor, a driving tooth is provided on the other end of the motor shaft, a transmission chain is provided on the cylindrical surface of the driving tooth, and the driving tooth is connected to the cutting assembly through the transmission chain.

[0011] As a further solution of the present invention: the cutting assembly includes a driven shaft, the driven shaft passes through the rotating block and is rotatably connected to the rotating block, a limit bearing is arranged on the cylindrical surface of the driven shaft, the limit bearing is used to limit the driven shaft, the cylindrical surface of the driven shaft is arranged with a transmission tooth, the transmission tooth is connected to the driving tooth through a transmission chain, one end of the driven shaft is fixedly connected to a flange, and the flange is bolted with a diamond saw blade.

[0012] As a further solution of the present invention: the second part of the cutting device includes a mounting piece, the mounting piece is sleeved on the cylindrical surface of the connecting shaft and is rotatably connected to the connecting shaft, the push rod is located in the mounting piece, the cylindrical surface of the mounting piece is provided with a concave thread groove, the cylindrical surface of the mounting piece is provided with an adjustment device, the adjustment device is located in the concave thread groove, the cylindrical surface of the mounting piece is provided with a plurality of track grooves, and extrusion blocks are provided in each of the plurality of track grooves, the extrusion blocks cooperate with the connecting assembly, and an angle adjustment assembly is provided inside the mounting piece.

[0013] As a further solution of the present invention: the adjusting device includes a threaded sleeve, which is sleeved on the cylindrical surface of the mounting piece and is threadedly connected to the mounting piece, one side of the threaded sleeve is in sliding contact with the extrusion block, a pushing block is provided on the arc surface of the threaded sleeve, a connecting groove is provided inside the threaded sleeve, and the threaded sleeve is connected to the angle adjustment assembly through the connecting groove.

[0014] As a further solution of the present invention: the angle adjustment component includes an arc-shaped plate, which is located in the mounting piece and is in sliding contact with the mounting piece. An arc-shaped connecting block is provided on the arc-shaped outer surface of the arc-shaped plate. The arc-shaped connecting block is used to connect the threaded sleeve and the arc-shaped plate. The arc-shaped plate is provided with a guide through groove, which consists of two parts, one part of the guide through groove is horizontally arranged, and the other part of the guide through groove is inclined. One end of the push rod extends into the guide through groove and is in sliding contact with the arc-shaped plate.

[0015] As a further solution of the present invention: the connecting assembly includes a plurality of connecting pins, each of which is slidably connected to the mounting member, each of which is provided with a force block at one end, each of which is respectively located in the track groove, each of which is provided with a spring on one side, and the other end of the spring is connected to the mounting member.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The device rotates the adjusting device, and since the adjusting device is threadedly connected to the second part of the cutting device, that is, the adjusting device moves horizontally when the adjusting device rotates, and at the same time the adjusting device contacts the extrusion block, that is, when the adjusting device moves, it pushes the extrusion block to move along the track groove. When the extrusion block moves to a certain extent, the extrusion block squeezes the force-bearing block to move the force-bearing block, and the force-bearing block drives the spring to be inserted into the carrier mechanical arm, and the installation of the device can be completed, which is convenient for the installation of the device with mobile equipment such as excavators and loaders, and improves the installation efficiency.

[0017] 2. During the movement of the adjusting device, the adjusting device drives the angle adjusting component to move through the arc-shaped connecting block. Since the push rod is located in the guide through-groove and in sliding contact with the arc-shaped plate, a part of the guide through-groove is inclined. That is, as the angle adjusting component moves, the inclined part of the guide through-groove will squeeze the push rod to rotate with the connecting shaft as the rotating axis, and the connecting shaft will drive the rotating block to rotate, and the rotating block will drive the cutting component to rotate, thereby changing the cutting angle. The angle can be adjusted according to the shape of the rock to meet different needs and improve cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a mountain rock cutting device.

[0019] Figure 2 The figure is a cross-sectional view of a rotating block in a mountain rock cutting device.

[0020] Figure 3 This is a schematic diagram of the structure of the second part of a cutting device in a mountain rock cutting device.

[0021] Figure 4 It is a front cross-sectional view of the second part of a cutting device in a mountain rock cutting device.

[0022] Figure 5 It is a half-section view of the second part of a cutting device in a mountain rock cutting device.

[0023] Figure 6 A half-section view of a connecting component in a mountain rock cutting device.

[0024] Figure 7 A top view of an angle adjustment component in a mountain rock cutting device.

[0025] 1- first part of cutting device, 2- cutting assembly, 3- second part of cutting device, 4- driving assembly, 5- adjusting device, 6- connecting assembly, 7- angle adjustment assembly, 8- carrier mechanical arm, 101- rotating block, 102- saw blade protection cover, 103- water pipe joint, 104- welding rod, 105- connecting shaft, 106- push rod, 201- diamond saw blade, 202- flange, 203- driven shaft, 204- transmission gear, 2 05-limit bearing, 301-mounting part, 302-concave thread groove, 303-track groove, 304-extrusion block, 401-servo motor, 402-motor shaft, 403-driving tooth, 404-transmission chain, 501-threaded sleeve, 502-pushing block, 503-connecting groove, 601-force block, 602-connecting pin, 603-spring, 701-arc plate, 702-guide through groove, 703-arc connecting block. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] See also Figure 1-7 A mountain rock cutting device comprises a first cutting device part 1, a second cutting device part 3 and a carrier mechanical arm 8, wherein the first cutting device part 1 is rotatably connected to the second cutting device part 3, a cutting assembly 2 is arranged on one side of the first cutting device part 1, the cutting assembly 2 penetrates the first cutting device part 1 and is rotatably connected to the first cutting device part 1, a driving assembly 4 is arranged inside the first cutting device part 1, the driving assembly 4 is connected to the cutting assembly 2, and the driving assembly 4 is used to drive the cutting assembly 2 to rotate, and the device can adjust the angle according to the shape of the rock to meet different needs and improve the cutting efficiency;

[0029] The second part 3 of the cutting device is provided with an angle adjustment component 7 inside, the angle adjustment component 7 is in sliding contact with the second part 3 of the cutting device, the angle adjustment component 7 cooperates with the first part 1 of the cutting device, the angle adjustment component 7 is used to adjust the cutting angle, the cylindrical surface of the second part 3 of the cutting device is threadedly connected to the adjustment device 5, one end of the angle adjustment component 7 is located in the adjustment device 5 and is in rotational contact with the adjustment device 5, the adjustment device 5 is used to drive the angle adjustment component 7 to move, the second part 3 of the cutting device is provided with a connecting component 6 inside, the connecting component 6 is used to connect the carrier mechanical arm 8 and the second part 3 of the cutting device, the device is convenient to be installed with mobile equipment such as excavators and loaders, and the installation efficiency is improved.

[0030] See also Figure 1 and Figure 4 The first part 1 of the cutting device includes a rotating block 101, a connecting shaft 105 is provided on one side of the rotating block 101, the rotating block 101 is rotatably connected to the second part 3 of the cutting device through the connecting shaft 105, a push rod 106 is provided on the cylindrical surface of the connecting shaft 105, a welding rod 104 is provided on one side of the rotating block 101, a saw blade protection cover 102 is provided on the other end of the welding rod 104, a water pipe joint 103 is provided on the side of the saw blade protection cover 102 close to the rotating block 101, a driving component 4 is provided inside the rotating block 101, and the rotating block 101 is rotatably connected to the cutting component 2.

[0031] See also Figure 2 The driving assembly 4 includes a servo motor 401, which is located in the rotating block 101 and fixedly connected to the rotating block 101. A motor shaft 402 is provided on one side of the servo motor 401, and a driving tooth 403 is provided on the other end of the motor shaft 402. A transmission chain 404 is provided on the cylindrical surface of the driving tooth 403, and the driving tooth 403 is connected to the cutting assembly 2 through the transmission chain 404.

[0032] See also Figure 1-2 The cutting assembly 2 includes a driven shaft 203, which passes through the rotating block 101 and is rotatably connected to the rotating block 101. A limit bearing 205 is arranged on the cylindrical surface of the driven shaft 203, and the limit bearing 205 is used to limit the driven shaft 203. A transmission tooth 204 is arranged on the cylindrical surface of the driven shaft 203. The transmission tooth 204 is connected to the driving tooth 403 through a transmission chain 404. One end of the driven shaft 203 is fixedly connected to a flange 202, and the flange 202 is bolted with a diamond saw blade 201. The motor shaft 402 is controlled to rotate by a servo motor 401, and the motor shaft 402 drives the driving tooth 403 to rotate. The driving tooth 403 drives the transmission tooth 204 to rotate through the transmission chain 404. The transmission tooth 204 drives the flange 202 and the diamond saw blade 201 to rotate through the driven shaft 203 to cut the rock.

[0033] See also Figure 3The second part 3 of the cutting device includes a mounting member 301, which is sleeved on the cylindrical surface of the connecting shaft 105 and is rotatably connected to the connecting shaft 105. The push rod 106 is located in the mounting member 301. The cylindrical surface of the mounting member 301 is provided with a concave thread groove 302. The cylindrical surface of the mounting member 301 is provided with an adjusting device 5, and the adjusting device 5 is located in the concave thread groove 302. The cylindrical surface of the mounting member 301 is provided with a plurality of track grooves 303, and the plurality of track grooves 303 are each provided with an extrusion block 304, which cooperates with the connecting component 6, and an angle adjustment component 7 is provided inside the mounting member 301.

[0034] See also Figure 3 and Figure 6 The adjusting device 5 includes a threaded sleeve 501, which is sleeved on the cylindrical surface of the mounting member 301 and is threadedly connected to the mounting member 301. One side of the threaded sleeve 501 is in sliding contact with the extrusion block 304. The arc surface of the threaded sleeve 501 is provided with a pushing block 502. The threaded sleeve 501 is provided with a connecting groove 503 inside. The threaded sleeve 501 is connected to the angle adjustment component 7 through the connecting groove 503. The threaded sleeve 501 is driven to rotate by the pushing block 502. Since the threaded sleeve 501 is located in the concave thread groove 302 and is threadedly connected to the mounting member 301, when the threaded sleeve 501 rotates, the threaded sleeve 501 moves horizontally.

[0035] See also Figure 4 , Figure 5 and Figure 7The angle adjustment component 7 includes an arc plate 701, which is located in the mounting member 301 and is in sliding contact with the mounting member 301. The arc outer surface of the arc plate 701 is provided with an arc connection block 703, and the arc connection block 703 is used to connect the threaded sleeve 501 and the arc plate 701. The arc plate 701 is provided with a guide through groove 702, and the guide through groove 702 is composed of two parts. One part of the guide through groove 702 is horizontally arranged, and the other part of the guide through groove 702 is inclined. One end of the push rod 106 extends into the guide through groove 702 and is in sliding contact with the arc plate 701. The arc plate 701 is connected to the threaded sleeve 501 through the arc connection block 703, that is, the process of the threaded sleeve 501 moving In the embodiment, the threaded sleeve 501 drives the arc plate 701 and the guide through groove 702 to move. Since the push rod 106 penetrates the guide through groove 702 and is in sliding contact with the arc plate 701, when the device is installed, if the threaded sleeve 501 continues to move, the push rod 106 enters the inclined setting part from the horizontal setting part of the guide through groove 702. As the arc plate 701 drives the guide through groove 702 to move, the inclined part of the guide through groove 702 will squeeze the push rod 106 to rotate with the connecting shaft 105 as the rotating shaft. The connecting shaft 105 drives the rotating block 101 to rotate, and the rotating block 101 drives the driven shaft 203 to rotate. The driven shaft 203 drives the diamond saw blade 201 to rotate through the flange 202 to adjust the cutting angle.

[0036] See also Figure 4 The connecting assembly 6 includes a plurality of connecting pins 602, and the plurality of connecting pins 602 are slidably connected to the mounting member 301. A force block 601 is arranged at one end of the plurality of connecting pins 602, and the plurality of force blocks 601 are respectively located in the track groove 303. A spring 603 is arranged on one side of the plurality of force blocks 601, and the other end of the spring 603 is connected to the mounting member 301. Since the threaded sleeve 501 is in contact with the extrusion block 304, the threaded sleeve 501 pushes the extrusion block 304 to move when it moves. When the extrusion block 304 moves to a certain extent, the extrusion block 304 squeezes the force block 601 to make it move, and the force block 601 drives the connecting pin 602 to move so that it is inserted into the carrier robot arm 8 to complete the installation of the device.

[0037] The working principle of the present invention is: the device drives the threaded sleeve 501 to rotate through the pushing block 502. Since the threaded sleeve 501 is located in the concave thread groove 302 and is threadedly connected to the mounting member 301, that is, when the threaded sleeve 501 rotates, the threaded sleeve 501 moves horizontally. At the same time, since the threaded sleeve 501 is in contact with the extrusion block 304, the threaded sleeve 501 pushes the extrusion block 304 to move when it moves. When the extrusion block 304 moves to a certain extent, the extrusion block 304 squeezes the force-bearing block 601 to move it, and the force-bearing block 601 drives the connecting pin 602 to move so that it is inserted into the carrier robot arm 8 to complete the installation of the device. At the same time, the arc plate 701 is connected to the threaded sleeve 501 through the arc connecting block 703, that is, during the movement of the threaded sleeve 501, the threaded sleeve 501 drives the arc plate 701 and the guide through-slot 702 to move. Since the push rod 106 penetrates the guide through-slot 702 and It is in sliding contact with the arc plate 701. When the device is installed, if the threaded sleeve 501 continues to move, the push rod 106 enters the inclined portion from the horizontal portion of the guide through groove 702. As the arc plate 701 drives the guide through groove 702 to move, the inclined portion of the guide through groove 702 will squeeze the push rod 106 to rotate with the connecting shaft 105 as the rotating shaft. The connecting shaft 105 drives the rotating block 101 to rotate, and the rotating block 101 drives the driven shaft 203 to rotate. The driven shaft 203 drives the diamond saw blade 201 to rotate through the flange 202 to adjust the cutting angle. The device controls the rotation of the motor shaft 402 through the servo motor 401, and the motor shaft 402 drives the active tooth 403 to rotate. The active tooth 403 drives the transmission tooth 204 to rotate through the transmission chain 404. The transmission tooth 204 drives the flange 202 and the diamond saw blade 201 to rotate through the driven shaft 203 to cut the rock.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A mountain rock cutting device, comprising a first cutting device part, a second cutting device part and a carrier mechanical arm, characterized in that: The first part of the cutting device is rotatably connected to the second part of the cutting device, a cutting assembly is arranged on one side of the first part of the cutting device, the cutting assembly passes through the first part of the cutting device and is rotatably connected to the first part of the cutting device, a driving assembly is arranged inside the first part of the cutting device, the driving assembly is connected to the cutting assembly, and the driving assembly is used to drive the cutting assembly to rotate; An angle adjustment component is arranged inside the second part of the cutting device, the angle adjustment component is in sliding contact with the second part of the cutting device, the angle adjustment component cooperates with the first part of the cutting device, the angle adjustment component is used to adjust the cutting angle, the cylindrical surface of the second part of the cutting device is threadedly connected to the adjustment device, one end of the angle adjustment component is located in the adjustment device and is in rotational contact with the adjustment device, the adjustment device is used to drive the angle adjustment component to move, and a connecting component is arranged inside the second part of the cutting device, the connecting component is used to connect the carrier robot arm and the second part of the cutting device.

2. A mountain rock cutting device according to claim 1, characterized in that: The first part of the cutting device includes a rotating block, a connecting shaft is provided on one side of the rotating block, the rotating block is rotatably connected to the second part of the cutting device through the connecting shaft, a push rod is provided on the cylindrical surface of the connecting shaft, a welding rod is provided on one side of the rotating block, a saw blade protection cover is provided on the other end of the welding rod, a water pipe joint is provided on the side of the saw blade protection cover close to the rotating block, a driving assembly is provided inside the rotating block, and the rotating block is rotatably connected to the cutting assembly.

3. A mountain rock cutting device according to claim 2, characterized in that: The driving assembly includes a servo motor, which is located in the rotating block and fixedly connected to the rotating block. A motor shaft is provided on one side of the servo motor, and a driving tooth is provided on the other end of the motor shaft. A transmission chain is provided on the cylindrical surface of the driving tooth, and the driving tooth is connected to the cutting assembly through the transmission chain.

4. A mountain rock cutting device according to claim 3, characterized in that: The cutting assembly includes a driven shaft, which passes through the rotating block and is rotatably connected to the rotating block. A limit bearing is arranged on the cylindrical surface of the driven shaft, and the limit bearing is used to limit the driven shaft. A transmission tooth is arranged on the cylindrical surface of the driven shaft, and the transmission tooth is connected to the driving tooth through a transmission chain. One end of the driven shaft is fixedly connected to a flange, and a diamond saw blade is bolted to the flange.

5. The mountain rock cutting device according to claim 2, characterized in that: The second part of the cutting device includes a mounting piece, which is sleeved on the cylindrical surface of the connecting shaft and is rotatably connected to the connecting shaft. The push rod is located in the mounting piece. The cylindrical surface of the mounting piece is provided with a concave thread groove. The cylindrical surface of the mounting piece is provided with an adjustment device, and the adjustment device is located in the concave thread groove. The cylindrical surface of the mounting piece is provided with a plurality of track grooves, and extrusion blocks are provided in the plurality of track grooves. The extrusion blocks cooperate with the connecting assembly, and an angle adjustment assembly is provided inside the mounting piece.

6. A mountain rock cutting device according to claim 5, characterized in that: The adjusting device comprises a threaded sleeve, which is sleeved on the cylindrical surface of the mounting part and is threadedly connected to the mounting part, one side of the threaded sleeve is in sliding contact with the extrusion block, a pushing block is provided on the arc surface of the threaded sleeve, a connecting groove is provided inside the threaded sleeve, and the threaded sleeve is connected to the angle adjustment component through the connecting groove.

7. The mountain rock cutting device according to claim 5, characterized in that: The angle adjustment component includes an arc-shaped plate, which is located in the mounting part and is in sliding contact with the mounting part. An arc-shaped connecting block is provided on the arc-shaped outer surface of the arc-shaped plate. The arc-shaped connecting block is used to connect the threaded sleeve and the arc-shaped plate. The arc-shaped plate is provided with a guide through groove, which consists of two parts. One part of the guide through groove is horizontally arranged, and the other part of the guide through groove is inclined. One end of the push rod extends into the guide through groove and is in sliding contact with the arc-shaped plate.

8. The mountain rock cutting device according to claim 5, characterized in that: The connecting assembly includes a plurality of connecting pins, each of which is slidably connected to the mounting member, each of which is provided with a force block at one end, each of which is located in the track groove, and each of which is provided with a spring at one side, the other end of which is connected to the mounting member.