Roadway repairing machine for coal mine

By setting up a walking chassis and powertrain in a coal mine tunnel repair machine, and using support components to support safety barriers, the safety hazards caused by the suspended setting of safety barriers in the existing technology are solved, and the tunnel repair machine is improved Stability and safety.

CN222183475UActive Publication Date: 2024-12-17HEBEI LUOKE COAL MINING MACHINERY CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420747684.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-11
Publication Date
2024-12-17
Estimated Expiration
2034-04-11

AI Technical Summary

Technical Problem

The safety barrier plate of the existing coal mine tunnel repair machine is set up at one end to the air, which poses safety risks and is poor in practicality.

Method used

A roadway repair machine for coal mines is designed. By setting a walking chassis at the bottom of the frame, and a working arm assembly and a powertrain at one end of the frame, the support components are limited to the frame and safety barrier. Between the plates, support the safety guard plate to prevent its suspended deflection.

Benefits of technology

It enhances structural stability and safety, improves the practicality of the tunnel repair machine, and ensures the safety of staff.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222183475U_ABST
    Figure CN222183475U_ABST
Patent Text Reader

Abstract

The utility model provides a roadway repairing machine for a coal mine. The roadway repairing machine comprises a frame, a working arm assembly, a power assembly and a supporting assembly. The bottom end of the frame is provided with a walking chassis, and the upper end is provided with an operating platform and a safety guard plate; the advancing direction of the walking chassis is set as a first direction; the working arm assembly is arranged at one end of the frame in the first direction and is used for tunneling engineering of an underground mine or a roadway; the power assembly is arranged at the upper end of the frame, and the power assembly and the operation table are arranged at an interval; the supporting assembly is limited between the frame and the safety guard plate, connected with the frame and the safety guard plate and used for supporting the safety guard plate. The utility model provides a roadway repairing machine for a coal mine, and aims to solve the problem that one end of a safety guard plate of a roadway repairing machine in the prior art is suspended, so that the safety is poor.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine tunnel repairing equipment, and in particular relates to a tunnel repairing machine for coal mines. Background Art

[0002] The tunnel repair machine for coal mines is a multifunctional tunnel repair equipment specially designed for mines and tunnel projects. It is suitable for tunnel excavation projects in coal mines, ferrous and non-ferrous underground mines, as well as chemical, railway, hydropower and other departments.

[0003] In the prior art, a tunnel repair machine is usually provided with an operating table, and a safety shield is provided above the operating table. One end of the safety shield is connected to the body of the tunnel repair machine, and the other end is suspended. The tunnel repair machine works in underground mines and tunnels. Since one end of the safety shield is suspended, when an object falls from the underground mine or tunnel, the safety shield may be deflected, which poses a safety hazard and is less practical. Utility Model Content

[0004] The utility model provides a tunnel repairing machine for coal mines, aiming to solve the problem that one end of a safety guard plate of the tunnel repairing machine in the prior art is suspended and has poor safety.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a tunnel repairing machine for coal mines, comprising:

[0006] The frame has a walking chassis at the bottom and an operating table and a safety shield at the top; the forward direction of the walking chassis is set as a first direction;

[0007] A working arm assembly, arranged at one end of the frame along the first direction, for use in excavation engineering of underground mines or tunnels;

[0008] A power assembly is arranged at the upper end of the frame and spaced apart from the operating table;

[0009] A support assembly is limited between the vehicle frame and the safety shield plate, and is respectively connected to the vehicle frame and the safety shield plate, and is used to support the safety shield plate.

[0010] In a possible implementation, a horizontal direction perpendicular to the first direction is set as the second direction; the support assembly includes two support structures, the two support structures are spaced apart along the second direction, each of the support structures is slidably connected to the frame, and is hinged to the safety shield.

[0011] In a possible implementation, each of the support structures includes:

[0012] A sliding seat, slidably disposed on the frame along the second direction;

[0013] A connecting rod, one end of which is hinged to the sliding seat, and the other end of which is hinged to the safety shield, and the connecting rod is a telescopic rod;

[0014] Wherein, the frame is provided with a slide groove adapted to the slide seat.

[0015] In a possible implementation, the slide seat includes:

[0016] The base block has a receiving cavity, wherein the receiving cavity has an open top and an open side wall;

[0017] A cover plate is arranged at the upper end opening and is used to block the upper end opening; a hinged portion is arranged on the cover plate;

[0018] The slide plate is arranged at the side wall opening and is used for blocking the side wall opening.

[0019] In a possible implementation, the slide seat further includes:

[0020] A first abutment plate, disposed on the slide plate, wherein a plurality of first grooves are provided on the first abutment plate;

[0021] The second abutment plate is arranged on the base block and is spaced apart from the first abutment plate along the first direction. The second abutment plate is provided with a plurality of second grooves. Both the first abutment plate and the second abutment plate are used to abut against the inner wall of the slide groove.

[0022] In a possible implementation, each of the support structures further includes an adjustment structure disposed in the accommodating cavity; the adjustment structure includes:

[0023] A sliding rod, disposed in the accommodating cavity and connected to an inner wall of the accommodating cavity;

[0024] A sleeve rod, sleeved on the outer periphery of the slide rod and slidably connected to the slide rod, wherein the sleeve rod is connected to the first abutment plate;

[0025] An adjusting plate, disposed in the accommodating cavity and connected to the sleeve rod;

[0026] The operating part is connected with the adjustment plate and is used for operation by staff.

[0027] In a possible implementation, the operating unit includes:

[0028] A rod body is arranged in a vertical direction, and the lower end of the rod body is slidably connected to the adjustment plate;

[0029] A shift block is arranged at the upper end of the rod body, and the shift block is located above the cover plate;

[0030] An elastic connecting piece, sleeved on the rod body, one end of the elastic connecting piece is connected to the adjusting plate, and the other end is connected to the shifting block;

[0031] Wherein, the cover plate is provided with an escape opening for the rod body to pass through, and the adjustment plate is provided with a sliding hole adapted to the rod body.

[0032] In a possible implementation, the connecting rod includes:

[0033] A first connecting rod, one end of which is hinged to the hinge portion;

[0034] A second connecting rod is slidably connected to the other end of the first connecting rod, the second connecting rod is sleeved on the outer periphery of the first connecting rod, and the second connecting rod is hinged to the safety shield plate;

[0035] The first connecting rod is provided with a plurality of first locking holes, the second connecting rod is provided with a plurality of second locking holes, the first connecting rod and the second connecting rod are locked by a fixing pin, and the fixing pin is adapted to each of the first locking holes and each of the second locking holes.

[0036] In a possible implementation, the coal mine tunnel repairing machine also includes a counterweight tailstock.

[0037] The beneficial effect of a tunnel repair machine for coal mines provided by the utility model is that: compared with the prior art, by setting a walking chassis at the bottom of the frame, the walking chassis drives the frame to move. A working arm assembly is provided at one end of the frame, and a power assembly is provided at the upper end of the frame. The power assembly provides power to the working arm assembly, so that the underground mine or tunnel is excavated by the working arm assembly. An operating table and a safety guard plate are provided at the upper end of the frame. The staff sits on the operating table to operate, and the safety guard plate is provided above the operator to protect the staff. A support assembly is provided between the frame and the safety guard plate, and the support assembly supports the suspended end of the safety guard plate, thereby preventing the safety guard plate from being deflected due to being suspended, enhancing the structural stability, improving safety, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of a tunnel repair machine for coal mines provided in an embodiment of the utility model Figure 1 ;

[0039] Figure 2 A schematic diagram of a tunnel repair machine for coal mines provided in an embodiment of the utility model Figure 2 ;

[0040] Figure 3A schematic diagram of the structure of a support assembly of a tunnel repair machine for a coal mine provided by an embodiment of the utility model;

[0041] Figure 4 A schematic diagram of the cooperation between the slide seat and the adjustment structure of a tunnel repair machine for coal mines provided in an embodiment of the utility model Figure 1 ;

[0042] Figure 5 A schematic diagram of the cooperation between the slide seat and the adjustment structure of a tunnel repair machine for coal mines provided in an embodiment of the utility model Figure 2 .

[0043] Description of reference numerals:

[0044] 10. Frame; 11. Walking chassis; 12. Operating table; 13. Safety shield; 20. Working arm assembly; 30. Power assembly; 40. Support assembly; 41. Sliding seat; 411. Base block; 4111. Accommodating cavity; 412. Cover plate; 4121. Avoidance; 4122. Articulated portion; 413. Slide plate; 414. First abutment plate; 4141. First groove; 415. Second abutment plate; 4151. Second groove; 416. Adjustment structure; 4161. Sliding rod; 4162. Sleeve rod; 4163. Adjustment plate; 4164. Rod body; 4165. Shifter block; 4166. Elastic connector; 42. Connecting rod; 421. First connecting rod; 4211. First locking hole; 422. Second connecting rod; 4221. Second locking hole; 50. Counterweight tail frame. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] It should be noted that the directions or positional relationships indicated by terms such as “length”, “width”, “height”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “head” and “tail” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0047] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "fixation", "setting" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0049] Please also read Figures 1 to 5 Now, a coal mine tunnel repairing machine provided by the utility model is described. The coal mine tunnel repairing machine includes a frame 10, a working arm assembly 20, a power assembly 30 and a support assembly 40. A walking chassis 11 is provided at the bottom end of the frame 10, and an operating platform 12 and a safety shield 13 are provided at the upper end. The forward direction of the walking chassis 11 is set as a first direction. The working arm assembly 20 is arranged at one end of the frame 10 along the first direction, and is used for excavation engineering of underground mines or tunnels. The power assembly 30 is arranged at the upper end of the frame 10, and is spaced apart from the operating platform 12. The support assembly 40 is limited between the frame 10 and the safety shield 13, and is respectively connected to the frame 10 and the safety shield 13, and is used to support the safety shield 13.

[0050] In this embodiment, a traveling chassis 11 is provided at the bottom of the vehicle frame 10, and the traveling chassis 11 drives the vehicle frame 10 to move. An operating table 12 and a safety shield 13 are provided at the upper end of the vehicle frame 10. The staff sits on the operating table 12 to operate, and the safety shield 13 is provided above the operator to protect the staff. A working arm assembly 20 is provided at one end of the vehicle frame 10, and a power assembly 30 is provided at the upper end of the vehicle frame 10. The power assembly 30 provides power to the working arm assembly 20, so that the working arm assembly 20 is used to excavate the underground mine or tunnel. A support assembly 40 is provided between the vehicle frame 10 and the safety shield 13, and the safety shield 13 is supported by the support assembly 40. Specifically, the support assembly 40 is used to support the suspended end of the safety shield 13.

[0051] The utility model provides a tunnel repair machine for coal mines. Compared with the prior art, the traveling chassis 11 is arranged at the bottom of the frame 10, so that the traveling chassis 11 drives the frame 10 to move. A working arm assembly 20 is arranged at one end of the frame 10, and a power assembly 30 is arranged at the upper end of the frame 10. The power assembly 30 provides power to the working arm assembly 20, so that the working arm assembly 20 is used to excavate the underground mine or tunnel. An operating table 12 and a safety shield 13 are arranged at the upper end of the frame 10. The staff sits on the operating table 12 to operate, and the safety shield 13 is arranged above the operator to protect the staff. A support assembly 40 is arranged between the frame 10 and the safety shield 13, and the support assembly 40 supports the suspended end of the safety shield 13, thereby preventing the safety shield 13 from being deflected due to being suspended, enhancing the structural stability, improving safety, and having good practicality.

[0052] In some embodiments, see Figure 1 , a horizontal direction perpendicular to the first direction is set as the second direction. The support assembly 40 includes two support structures, the two support structures are spaced apart along the second direction, each support structure is slidably connected to the frame 10, and is hinged to the safety shield 13. In this embodiment, two support structures are provided, and the two support structures are spaced apart, thereby improving the support stability of the safety shield 13. Each support structure is slidably connected to the frame 10, and is hinged to the safety shield 13, so that the position of the support structure can be adjusted according to the size of the safety shield 13, thereby ensuring the support effect and having good practicality.

[0053] In some embodiments, see Figure 3 , each supporting structure includes a slide 41 and a connecting rod 42. The slide 41 is slidably arranged on the frame 10 along the second direction. One end of the connecting rod 42 is hinged to the slide 41, and the other end is hinged to the safety shield 13, and the connecting rod 42 is a telescopic rod. Among them, a slide groove adapted to the slide 41 is provided on the frame 10. In this embodiment, the slide 41 is slidably arranged on the frame 10, and the frame 10 is provided with a slide groove adapted to the slide 41, so that the slide 41 moves in the slide groove, which is convenient for adjusting the position of the slide 41 according to the size of the safety shield 13. One end of the connecting rod 42 is hinged to the slide 41, and the other end is hinged to the safety shield 13, and the connecting rod 42 is a telescopic rod, so that the length of the connecting rod 42 can be adjusted while the slide 41 slides to complete the support of the safety shield 13 and ensure the support effect of the safety shield 13.

[0054] In some embodiments, see Figures 3 to 5The slide seat 41 includes a base block 411, a cover plate 412 and a slide plate 413. The base block 411 has a housing cavity 4111, and the housing cavity 4111 has an upper end opening and a side wall opening. The cover plate 412 is arranged at the upper end opening for blocking the upper end opening, and a hinged portion 4122 is provided on the cover plate 412. The slide plate 413 is arranged at the side wall opening for blocking the side wall opening. In this embodiment, a hinged portion 4122 is provided on the cover plate 412, and the connecting rod 42 is connected to the hinged portion 4122.

[0055] In some embodiments, see Figures 3 to 5 The slide 41 further includes a first abutment plate 414 and a second abutment plate 415. The first abutment plate 414 is arranged on the slide plate 413, and a plurality of first grooves 4141 are arranged on the first abutment plate 414. The second abutment plate 415 is arranged on the base block 411, and is spaced apart from the first abutment plate 414 along the first direction, and a plurality of second grooves 4151 are arranged on the second abutment plate 415. Both the first abutment plate 414 and the second abutment plate 415 are used to abut against the inner wall of the slide. In this embodiment, the first abutment plate 414 is arranged on the slide plate 413, and the second abutment plate 415 is arranged on the base block 411, and a plurality of first grooves 4141 are arranged on the first abutment plate 414, and a plurality of second grooves 4151 are arranged on the second abutment plate 415, so as to increase the abutment friction between the first abutment plate 414 and the second abutment plate 415 and the inner wall of the slide, and when the slide 41 reaches the desired position, the position of the slide 41 is prevented from being offset.

[0056] In some embodiments, see Figure 4 and Figure 5, each supporting structure also includes an adjustment structure 416 arranged in the accommodating cavity 4111. The adjustment structure 416 includes a sliding rod 4161, a sleeve rod 4162, an adjustment plate 4163 and an operating unit. The sliding rod 4161 is arranged in the accommodating cavity 4111 and is connected to the inner wall of the accommodating cavity 4111. The sleeve rod 4162 is sleeved on the outer periphery of the sliding rod 4161 and is slidably connected to the sliding rod 4161, and the sleeve rod 4162 is connected to the first abutment plate 414. The adjustment plate 4163 is arranged in the accommodating cavity 4111 and is connected to the sleeve rod 4162. The operating unit is connected to the adjustment plate 4163 for operation by the staff. Specifically, a slider is provided on the adjustment plate 4163, and a sliding cavity adapted to the adjustment plate 4163 is provided on the accommodating cavity 4111. In this embodiment, the sleeve rod 4162 is sleeved on the outer periphery of the slide bar 4161 and is slidably connected to the slide bar 4161, the adjustment plate 4163 is connected to the sleeve rod 4162, and an operating portion is provided on the adjustment plate 4163, so that the operator moves the adjustment plate 4163 through the operating portion, and the adjustment plate 4163 drives the sleeve rod 4162 to slide on the outer periphery of the slide bar 4161, thereby adjusting the combined length of the slide bar 4161 and the sleeve rod 4162, and the sleeve rod 4162 drives the first abutment plate 414 to move. During the sliding process of the slide seat 41, the sleeve rod 4162 drives the first abutment plate 414 to move, reducing the interval between the first abutment plate 414 and the second abutment plate 415, so that a gap is formed between the first abutment plate 414 and the second abutment plate 415 and the inner wall of the slide groove, thereby facilitating the sliding of the slide seat 41. When the slide 41 reaches the corresponding position, the first abutment plate 414 is driven to move in the opposite direction by the sleeve rod 4162, thereby increasing the interval between the first abutment plate 414 and the second abutment plate 415, so that the first abutment plate 414 and the second abutment plate 415 abut against the inner wall of the slide groove, thereby preventing the position of the slide 41 from being offset.

[0057] In some embodiments, see Figures 3 to 5, the operating part includes a rod body 4164, a shift block 4165 and an elastic connector 4166. The rod body 4164 is arranged in the vertical direction, and the lower end of the rod body 4164 is slidably connected to the adjustment plate 4163. The shift block 4165 is arranged at the upper end of the rod body 4164, and the shift block 4165 is located above the cover plate 412. The elastic connector 4166 is sleeved on the rod body 4164, one end of the elastic connector 4166 is connected to the adjustment plate 4163, and the other end is connected to the shift block 4165. Among them, the cover plate 412 is provided with an avoidance opening 4121 for the rod body 4164 to pass through, and the adjustment plate 4163 is provided with a sliding hole adapted to the rod body 4164. In this embodiment, the elastic connector 4166 is sleeved on the rod body 4164, and one end is connected to the adjustment plate 4163, and the other end is connected to the shift block 4165. When the slide 41 is stationary, the elastic connector 4166 is in an extended state, and the shift block 4165 abuts against the cover plate 412. When the slide 41 needs to be moved, the shift block 4165 is pulled upward, and the adjusting plate 4163 is driven to move by the shift block 4165 and the rod body 4164. Specifically, the lower end of the rod body 4164 is always located in the slide hole.

[0058] In some embodiments, see Figure 3 The connecting rod 42 includes a first connecting rod 421 and a second connecting rod 422. One end of the first connecting rod 421 is hinged to the hinge portion 4122. The second connecting rod 422 is slidably connected to the other end of the first connecting rod 421, and the second connecting rod 422 is sleeved on the outer periphery of the first connecting rod 421. The second connecting rod 422 is hinged to the safety shield 13. Among them, the first connecting rod 421 is provided with a plurality of first locking holes 4211, and the second connecting rod 422 is provided with a plurality of second locking holes 4221. The first connecting rod 421 and the second connecting rod 422 are locked by a fixing pin, and the fixing pin is adapted to each first locking hole 4211 and each second locking hole 4221. In this embodiment, the second connecting rod 422 is slidably connected to the first connecting rod 421, and the second connecting rod 422 is sleeved on the outer periphery of the first connecting rod 421, so that the combined length of the first connecting rod 421 and the second connecting rod 422 can be adjusted. The first connecting rod 421 is provided with a plurality of first locking holes 4211, and the second connecting rod 422 is provided with a plurality of second locking holes 4221. The fixing pin is adapted to each first locking hole 4211 and each second locking hole 4221. Therefore, when the first connecting rod 421 and the second connecting rod 422 are adjusted to a desired combined length, the first connecting rod 421 and the second connecting rod 422 are locked by the fixing pin so that the combined length of the first connecting rod 421 and the second connecting rod 422 remains unchanged.

[0059] In some embodiments, see Figure 1 The coal mine tunnel repairing machine provided by the embodiment of the utility model also includes a counterweight tail frame 50 to improve the stability of the tunnel repairing machine.

[0060] The walking chassis 11, the working arm assembly 20 and the power assembly 30 in the present application may adopt existing technologies.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel repair machine for coal mines, characterized in that: include: The frame has a walking chassis at the bottom and an operating table and a safety guard plate at the top; Setting the forward direction of the walking chassis to be a first direction; A working arm assembly, arranged at one end of the frame along the first direction, for use in excavation engineering of underground mines or tunnels; A power assembly is arranged at the upper end of the frame and spaced apart from the operating table; A support assembly, limited between the vehicle frame and the safety shield plate, and connected to the vehicle frame and the safety shield plate respectively, for supporting the safety shield plate; A horizontal direction perpendicular to the first direction is set as a second direction; the support assembly includes two support structures, the two support structures are spaced apart along the second direction, each of the support structures is slidably connected to the vehicle frame and is hinged to the safety guard plate; Each of the support structures comprises: A sliding seat, slidably disposed on the frame along the second direction; A connecting rod, one end of which is hinged to the sliding seat, and the other end of which is hinged to the safety shield, and the connecting rod is a telescopic rod; Wherein, the frame is provided with a slide groove adapted to the slide seat; The slide seat comprises: The base block has a receiving cavity, wherein the receiving cavity has an open top and an open side wall; A cover plate is arranged at the upper end opening and is used to block the upper end opening; a hinged portion is arranged on the cover plate; The slide plate is arranged at the side wall opening and is used for blocking the side wall opening.

2. A coal mine tunnel repairing machine as claimed in claim 1, characterized in that: The slide also includes: A first abutment plate, disposed on the slide plate, wherein a plurality of first grooves are provided on the first abutment plate; The second abutment plate is arranged on the base block and is spaced apart from the first abutment plate along the first direction. The second abutment plate is provided with a plurality of second grooves. Both the first abutment plate and the second abutment plate are used to abut against the inner wall of the slide groove.

3. A coal mine tunnel repairing machine as claimed in claim 2, characterized in that: Each of the supporting structures further comprises an adjustment structure disposed in the accommodating cavity; the adjustment structure comprises: A sliding rod, disposed in the accommodating cavity and connected to an inner wall of the accommodating cavity; A sleeve rod, sleeved on the outer periphery of the slide rod and slidably connected to the slide rod, wherein the sleeve rod is connected to the first abutment plate; An adjusting plate, disposed in the accommodating cavity and connected to the sleeve rod; The operating part is connected to the adjustment plate and is used for operation by staff.

4. A coal mine tunnel repairing machine as claimed in claim 3, characterized in that: The operating unit comprises: A rod body is arranged in a vertical direction, and the lower end of the rod body is slidably connected to the adjustment plate; A shift block is arranged at the upper end of the rod body, and the shift block is located above the cover plate; An elastic connecting member, sleeved on the rod body, one end of the elastic connecting member is connected to the adjusting plate, and the other end is connected to the shifting block; Wherein, the cover plate is provided with an avoidance opening for the rod body to pass through, and the adjustment plate is provided with a sliding hole adapted to the rod body.

5. A coal mine tunnel repairing machine as claimed in claim 1, characterized in that: The connecting rod comprises: A first connecting rod, one end of which is hinged to the hinge portion; A second connecting rod is slidably connected to the other end of the first connecting rod, the second connecting rod is sleeved on the outer periphery of the first connecting rod, and the second connecting rod is hinged to the safety shield plate; The first connecting rod is provided with a plurality of first locking holes, the second connecting rod is provided with a plurality of second locking holes, the first connecting rod and the second connecting rod are locked by a fixing pin, and the fixing pin is adapted to each of the first locking holes and each of the second locking holes.

6. A coal mine tunnel repairing machine as claimed in claim 1, characterized in that: The coal mine tunnel repairing machine also includes a counterweight tailstock.