Auxiliary tool for checking moment of roadway top anchor rod

Abstract

The invention discloses a roadway top anchor rod torque inspection auxiliary tool, and relates to the technical field of underground support special tools, the roadway top anchor rod torque inspection auxiliary tool comprises an auxiliary rod, the top is a fixing plate, the fixing plate is provided with a sinking groove with a regular hexagon inside, and the bottom is a bottom button with a regular hexagon section; the bottom frame is located below the auxiliary rod, the middle of the bottom frame is slidably connected with a jacking rod, and sliding rings are rotationally connected to the two sides of the bottom of the jacking rod and tied with traction cables. The mounting frame is mounted on the bottom frame; the pedal frame is slidably connected to the mounting frame, pulleys are rotationally connected to the two sides of the top end of the mounting frame, the other end of the traction cable is lapped on the pulleys and fixedly connected with the pedal frame, and the weight of the jacking rod can drive the pedal frame to move to the top; the top end of the jacking rod can abut against the bottom of the torque wrench, and the auxiliary rod abuts against a gasket of the top anchor rod. The device has the effect of improving the nut torque checking efficiency of the roadway top anchor rod.

Description

Technical Field

[0001] The present application relates to the technical field of special tools for underground support, and in particular to an auxiliary tool for checking the torque of a tunnel top anchor rod. Background Art

[0002] Coal mines are mainly mined underground, so a large number of tunnels need to be excavated underground. After the tunnels are excavated, support operations need to be carried out immediately to improve the safety of tunnel construction.

[0003] Tunnel support has gone through a long development process from wood support, masonry support, steel support to anchor support. Anchor support is the most effective and economical way to support tunnels. At present, anchor drilling rigs are used for tunnel support, and vertical holes are made at the top of the tunnel through drill rods. After the holes are made and cleaned, the anchoring agent is pushed into the hole, and then the anchor is sent into the hole through the anchor drilling rig for mixing and anchoring, and the anchor is continuously sent in. After waiting for a period of time, the anchor is rotated and tightened to complete the installation of the tunnel support anchor.

[0004] After the permanent support of the anchor rods on the top of the tunnel is completed, workers need to use climbing tools such as stepladders to check the torque of the anchor rods. Generally, workers will use a torque wrench to check after reaching the specified height to ensure that the nuts on each anchor rod reach the specified torque. During the inspection process, workers need to work in a small space at the head of the excavation, which is not only time-consuming and labor-intensive, but also has certain safety hazards. On the other hand, since the nut is close to the head of the excavation after the support anchor rod is installed, it is not convenient to use a torque wrench for rotation inspection. In addition, there are a large number of tunnel support anchor rods, and the efficiency of moving the climbing tools for inspection each time is low and has a high labor intensity. Summary of the invention

[0005] In order to improve the defects of low efficiency, high work intensity and potential safety hazards in torque inspection after the tunnel top anchor support is installed, the present application provides a tunnel top anchor torque inspection auxiliary tool.

[0006] The present application provides an auxiliary tool for checking the torque of the top anchor bolt of a roadway, which adopts the following technical solution: A tunnel top anchor moment inspection auxiliary tool, comprising: The auxiliary rod has a fixed plate on the top, a regular hexagonal groove on the fixed plate, and a bottom button with a regular hexagonal cross section at the bottom, which can be tightened by a torque wrench; The bottom frame is located below the auxiliary rod, and the middle part slides up and down and is connected to the lifting rod. The two sides of the bottom of the lifting rod are rotatably connected to a set of slip rings, and the slip rings are tied with traction ropes; A mounting frame, mounted on the base frame and located on one side of the jacking rod; The footrest is slidably connected up and down to the mounting frame. The part where the footrest is slidably connected to the mounting frame passes through the mounting frame. On both sides of the part where the footrest is slidably connected to the mounting frame, another set of sliding rings are rotatably connected. The two sliding rings of the footrest are located outside the mounting frame. On both sides of the top end of the mounting frame, pulleys are rotatably connected. The other end of the towing cable is placed on the pulley and fixedly connected to the sliding ring of the footrest. The weight of the jacking rod can drive the footrest to move to the top; The top end of the jacking rod can abut against the bottom of the torque wrench and press the auxiliary rod tightly against the gasket of the roof bolt.

[0007] Optionally, the jacking rod includes a main rod and a sub-rod. The main rod is slidably connected to the bottom frame. A sliding groove is formed at the top of the main rod. The sub-rod is slidably connected to the main rod within the sliding groove; A spring piece is fixedly embedded in the circumferential inner wall of the sub-rod. A plurality of clamping holes are spaced apart on the circumferential outer wall of the main rod. The clamping block of the spring piece can be stuck in the clamping hole.

[0008] Optionally, the clamping block of the spring piece is "V"-shaped and the opening faces one side. The bottom of the clamping block of the spring piece extends downward for anti-detachment setting. The clamping block of the spring piece is made of the same material as the spring piece and is integrally bent and formed.

[0009] Optionally, a plurality of mounting plates are installed on the upper surface of the fixing plate. A rotating groove is formed in the inner wall of the mounting plate close to the sinking groove. A sector-shaped positioning plate is rotatably connected to the top wall of the rotating groove. A torsion spring is arranged on the rotating shaft of the positioning plate, so that the positioning plate rotates out of the rotating groove. The bottom of the positioning plate abuts against the bottom wall of the rotating groove, making the positioning plate unable to completely disengage from the rotating groove; The positioning plate can abut against the nut of the roof bolt. When the nut of the roof bolt is located in the sinking groove and at the deepest position, the part of the positioning plate extending out of the rotating groove is directly opposite to the top part of the nut of the roof bolt; The fixing plate is provided with an unlocking component for making the positioning plate completely located in the rotating groove.

[0010] Optionally, the unlocking component includes an unlocking cylinder, an unlocking spring, an unlocking rod and an unlocking plate; The unlocking plate is fixedly arranged on the positioning plate and is located at the part of the positioning plate within the rotating groove; The unlocking cylinder is slidably connected to the auxiliary rod. One end of the unlocking spring is fixedly connected to the lower surface of the fixing plate, and the other end is fixedly connected to the top end of the unlocking cylinder; An unlocking hole communicating with the rotating groove is formed at the bottom of the unlocking plate. The unlocking hole is directly opposite to the unlocking plate. The unlocking rod is slidably connected in the unlocking hole. The part of the unlocking rod extending out of the unlocking hole is fixedly connected to the unlocking cylinder; The unlocking cylinder can drive the unlocking rod to abut against the unlocking plate and make the positioning plate completely located in the rotating groove.

[0011] Optionally, an inner groove for the bottom button to extend into is formed at the top end of the jacking rod. Clamping strips are fixedly arranged on the circumferential inner wall of the inner groove. A clamping ring groove for the clamping strips to be clamped in is formed on the circumferential outer wall of the bottom button.

[0012] Optionally, the chassis is a tripod structure. A clamp is fixedly provided on one leg of the chassis. A clamping groove is formed in the platform part at the top of the chassis. After the legs of the chassis are retracted, the auxiliary rod can be simultaneously clamped in the clamp and the clamping groove.

[0013] Optionally, the auxiliary rod includes a bottom rod and a top rod. The bottom rod is threadedly connected to the bottom of the top rod. A fixing plate is located on the top rod. A bottom ring plate is rotatably connected to the outer circumferential wall of the bottom rod. A top ring plate is rotatably connected to the outer circumferential wall of the top rod. The bottom ring plate is rotatably connected to a bottom frame. The top ring plate is rotatably connected to a top frame. The top frame and the bottom frame are rotatably connected to each other; When the bottom button is located in the inner groove and the top rod is separated from the bottom rod, the top rod can be simultaneously located in the clamp and the clamping groove.

[0014] Optionally, an insertion hole for inserting and fixing a torque wrench is formed in the top platform of the chassis.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the roof bolt is driven in, the auxiliary rod is moved to the position where the nut of the roof bolt enters the sunken groove. Subsequently, the torque wrench is clamped on the bottom button. By stepping on the footrest frame, the jacking rod is driven to move upward, so that the top end of the jacking rod abuts against the bottom of the torque wrench, thereby providing bottom support for the auxiliary rod and the torque wrench. Subsequently, when the torque wrench drives the auxiliary rod to check the torque of the nut of the roof bolt, it can be more accurate and stable, reducing the probability of the auxiliary rod shifting after being stressed, and also realizing the work of checking the torque of the roof bolt on the ground without a ladder; 2. By stepping on the footrest frame to drive the jacking rod to move upward, it is more convenient for workers to operate; 3. During the process of the nut of the roof bolt entering the sunken groove, the positioning plate abuts against the nut and drives the positioning plate to rotate. Subsequently, the positioning plate automatically pops out to the top of the nut, and thus the auxiliary rod can be positioned on the roof bolt by abutting the positioning plate against the top of the nut, without the need for workers to always hold the auxiliary rod by hand during operation, improving the efficiency of checking the torque of the roof bolt; 4. By moving the unlocking cylinder upward, the unlocking rod abuts against the unlocking plate, driving the positioning plate to be completely located in the rotating groove, and thus the auxiliary rod can be removed from the roof bolt, improving the efficiency of removing the auxiliary rod; 5. The bottom button can be clamped into the inner groove, cooperating with the telescopic setting of the jacking rod, enabling the jacking rod and the auxiliary rod to move upward together until the auxiliary rod is fixed to the roof bolt and then separating the auxiliary rod from the jacking rod, thereby simultaneously realizing the installation of the auxiliary rod and the height adjustment of the jacking rod, improving the efficiency of checking the torque of the roof bolt in the roadway; 6. The detachable setting of the auxiliary rod enables the bottom rod to be fixed on the jacking rod while fixing the top rod on the bottom frame. At the same time, the bottom frame can also accommodate the torque wrench, so that the tools for checking the torque of the roadway roof bolt can be moved and taken away together, improving the portability of the auxiliary tools. Brief Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of Embodiment 1 of the present application; Figure 2 is a partial exploded view showing the bottom button in Embodiment 1 of the present application; Figure 3 is a partial cross-sectional view showing the jacking rod in Embodiment 1 of the present application; Figure 4 is a schematic diagram showing the spring piece in Embodiment 1 of the present application; Figure 5 is a partial cross-sectional view showing the unlocking assembly in Embodiment 1 of the present application; Figure 6 is a partial cross-sectional view showing the unlocking state of the positioning plate in Embodiment 1 of the present application; Figure 7 is a schematic structural diagram showing the storage state of the auxiliary rod in Embodiment 2 of the present application; Figure 8 is a schematic structural diagram showing the storage state of the auxiliary rod in Embodiment 3 of the present application.

[0017] In the figure, 1. Auxiliary rod; 11. Top rod; 111. Top ring plate; 1111. Top frame; 12. Bottom rod; 121. Bottom ring plate; 1211. Bottom frame; 122. Bottom button; 1221. Clamping ring groove; 2. Fixed plate; 21. Sunk groove; 22. Mounting plate; 221. Rotating groove; 222. Positioning plate; 23. Unlocking hole; 3. Bottom frame; 31. Clamp; 32. Insertion groove; 33. Insertion hole; 4. Jacking rod; 41. Main rod; 411. Sliding ring; 4111. Traction cable; 412. Sliding groove; 413. Card hole; 42. Sub-rod; 421. Spring piece; 422. Inner groove; 4221. Clamping strip; 423. Sliding ring plate; 5. Mounting frame; 51. Footrest frame; 52. Pulley; 6. Unlocking assembly; 61. Unlocking cylinder, 62. Unlocking spring; 63. Unlocking rod; 64. Unlocking plate;. Detailed Description of the Embodiments

[0018] The following further elaborates on the present application in conjunction with the attached Figure 1-8 drawings.

[0019] Embodiment 1 of the present application discloses an auxiliary tool for checking the torque of roadway roof bolts. Embodiment 1

[0020] Refer to Figure 1, the auxiliary tool for checking the torque of the roof bolt in the roadway includes an auxiliary rod 1, a chassis 3, a fixing plate 2 and a jacking rod 4.

[0021] Reference Figure 2 and Figure 3 , the fixing plate 2 is fixedly arranged at the top end of the auxiliary rod 1. A bottom button 122 is fixedly arranged at the bottom end of the auxiliary rod 1. The cross-section of the bottom button 122 is a regular hexagon and can be tightened by a torque wrench. The chassis 3 is a tripod, and the jacking rod 4 is vertically and slidably connected to the middle position of the top platform of the chassis 3. The jacking rod 4 is telescopically arranged. A set of sliding rings 411 are rotatably connected to both sides of the bottom of the jacking rod 4, and a traction cable 4111 is tied to the sliding rings 411. An installation bracket 5 is fixedly arranged on the lower surface of the top platform of the chassis 3, and the installation bracket 5 is located on one side of the jacking rod 4. A footrest 51 that can be stepped on by the sole of the foot to slide downward is vertically and slidably connected to the installation bracket 5. The sliding connection part of the footrest 51 and the installation bracket 5 passes through the installation bracket 5.

[0022] Another set of sliding rings 411 are rotatably connected to both sides of the part where the footrest 51 is slidably connected to the installation bracket 5, and the two sliding rings 411 of the footrest 51 are located outside the installation bracket 5. Pulleys 52 are rotatably connected to both sides of the top end of the installation bracket 5, and the other end of the traction cable 4111 is placed on the pulleys 52 and fixedly connected to the sliding rings 411 of the footrest 51. The weight of the jacking rod 4 can drive the footrest 51 to move to the top. An inner groove 422 for the bottom button 122 to extend into is opened at the top end of the jacking rod 4. A clamping strip 4221 is fixedly arranged on the circumferential inner wall of the inner groove 422, and a clamping ring groove 1221 for the clamping strip 4221 to be clamped in is opened on the circumferential outer wall of the bottom button 122. A sliding ring plate 423 is rotatably connected to the top end of the jacking rod 4 for abutting against the bottom of the torque wrench.

[0023] Reference Figure 4 , a sink 21 is opened at the center position of the upper surface of the fixing plate 2. The opening of the sink 21 is a regular hexagon for the nut of the roof bolt to be embedded and fit with the circumferential outer wall of the nut. The fixing plate 2 can be fixed on the nut of the roof bolt, and the fixing plate 2 is provided with an unlocking component 6 for detaching the fixing plate 2 from the roof bolt.

[0024] When torque inspection of the top anchor bolt is required, insert the bottom button 122 into the inner groove 422. The jacking rod 4 is connected to the auxiliary rod 1 by the clamping strip 4221 being stuck in the clamping ring groove 1221. Then move the auxiliary rod 1 so that the nut of the top anchor bolt is in contact with the inner wall of the sinking groove 21 and fix the fixing plate 2 to the top anchor bolt. In this way, the length of the jacking rod 4 can be adjusted while the auxiliary rod 1 is fixed to the top anchor bolt. Subsequently, pulling down the jacking rod 4 can separate the jacking rod 4 from the auxiliary rod 1, and then put the torque wrench on the bottom button 122. Step on the foot pedal so that the foot pedal moves downward. The foot pedal drives the jacking rod 4 to move upward through the traction cable 4111, so that the sliding ring plate 423 abuts against the bottom of the torque wrench, and at the same time gives an upward pressure from the bottom to the auxiliary rod 1. Subsequently, during the process of driving the auxiliary rod 1 to rotate by the torque wrench, the probability of the auxiliary rod 1 deviating can be effectively reduced, thereby improving the stability of the position of the auxiliary rod 1 and also improving the accuracy of torque inspection of the nut of the top anchor bolt through the auxiliary rod 1. At the same time, the method of using the auxiliary rod 1 as an extension to perform torque inspection on the nut of the top anchor bolt can also enable workers not to use tools such as ladders, improving the efficiency of workers in performing torque inspection on the nuts of the roadway top anchor bolts.

[0025] Reference Figure 3 and Figure 4 The jacking rod 4 includes a main rod 41 and a sub-rod 42. The main rod 41 is slidably connected to the bottom frame 3. A sliding groove 412 is opened at the top of the main rod 41, and the sub-rod 42 is slidably connected to the main rod 41 in the sliding groove 412. A spring piece 421 is fixedly embedded in the circumferential inner wall of the sub-rod 42. A plurality of card holes 413 are spaced apart on the circumferential outer wall of the main rod 41. The clamping block of the spring piece 421 can be stuck in the card hole 413. The clamping block of the spring piece 421 is "V"-shaped and the opening faces one side. The bottom end of the clamping block of the spring piece 421 extends downward for anti-disengagement setting. The clamping block of the spring piece 421 is made of the same material as the spring piece 421 and is integrally bent. The sub-rod 42 cannot be separated from the main rod 41. The sliding ring 411 is located on the main rod 41, and the inner groove 422 and the sliding ring plate 423 are both located on the sub-rod 42.

[0026] In this way, during the process of driving the jacking rod 4 to move upward by the auxiliary rod 1, the sub-rod 42 will slide upward relative to the main rod 41. Thus, the inclined surface of the spring piece 421 abuts against the card hole 413, causing the spring piece 421 to be squeezed inward, facilitating the adjustment and positioning of the position of the sub-rod 42 on the main rod 41. At the same time, the bottom end setting of the spring piece 421 can also be effectively stuck in the card hole 413, and the position can be kept stable when the sub-rod 42 is squeezed downward relative to the main rod 41. When it is necessary to slide the sub-rod 42 into the main rod 41, just squeeze the spring piece 421 inward.

[0027] Reference Figure 5 and Figure 6, a plurality of mounting plates 22 are mounted on the upper surface of the fixed plate 2. A rotating groove 221 is formed in the inner wall of the mounting plate 22 close to the sunken groove 21. A sector-shaped positioning plate 222 is rotatably connected to the inner top wall of the rotating groove 221. A torsion spring is arranged on the rotating shaft of the positioning plate 222, so that the positioning plate 222 rotates out of the rotating groove 221. The bottom of the positioning plate 222 abuts against the inner bottom wall of the rotating groove 221, so that the positioning plate 222 cannot completely disengage from the rotating groove 221. The positioning plate 222 can abut against the nut of the top anchor bolt. When the nut of the top anchor bolt is located in the sunken groove 21 and at the deepest position, the part of the positioning plate 222 extending out of the rotating groove 221 is directly opposite to the top part of the nut of the top anchor bolt. Further, after the auxiliary rod 1 is lifted up until the nut of the top anchor bolt is located in the sunken groove 21, the positioning plate 222 can automatically pop out above the nut of the top anchor bolt and clamp the auxiliary rod 1 on the top anchor bolt by abutting against the top of the nut.

[0028] Reference Figure 5 and Figure 6 , the unlocking assembly 6 includes an unlocking cylinder 61, an unlocking spring 62, an unlocking rod 63 and an unlocking plate 64. The unlocking plate 64 is fixedly arranged on the positioning plate 222 and is located at the part of the positioning plate 222 in the rotating groove 221. The unlocking cylinder 61 is slidably connected to the auxiliary rod 1. One end of the unlocking spring 62 is fixedly connected to the lower surface of the fixed plate 2, and the other end is fixedly connected to the top end of the unlocking cylinder 61. An unlocking hole 23 communicating with the rotating groove 221 is formed at the bottom of the unlocking plate 64. The unlocking hole 23 is directly opposite to the unlocking plate 64. The unlocking rod 63 is slidably connected in the unlocking hole 23. The part of the unlocking rod 63 extending out of the unlocking hole 23 is fixedly connected to the unlocking cylinder 61. The unlocking cylinder 61 can drive the unlocking rod 63 to abut against the unlocking plate 64 and make the positioning plate 222 completely located in the rotating groove 221.

[0029] After the torque inspection of the nut of the top anchor bolt is completed, the unlocking cylinder 61 is lifted up. The unlocking cylinder 61 compresses the unlocking spring 62 and makes the unlocking rod 63 abut against the unlocking plate 64, driving the positioning plate 222 to rotate inward. After the positioning plate 222 completely rotates into the rotating groove 221, the whole auxiliary rod 1 is lowered, and the unlocking of the auxiliary rod 1 can be completed.

[0030] The implementation principle of Embodiment 1 of this application is as follows: Combine the auxiliary rod 1 with the top end of the secondary rod 42, and move the auxiliary rod 1 below the roof bolt, driving the auxiliary rod 1 to move upward until the nut of the roof bolt is located within the sinking groove 21. At this time, the positioning plate 222 pops out above the nut of the roof bolt, then pull the secondary rod 42 downward to separate it from the auxiliary rod 1. The auxiliary rod 1 is fixed to the roof bolt, and at the same time, the length adjustment of the jacking rod 4 and the position adjustment of the chassis 3 are completed. Subsequently, put the torque wrench on the bottom button 122 and step on the foot pedal. The jacking rod 4 moves upward to abut tightly against the bottom of the torque wrench, giving a stable upward pressure to the auxiliary rod 1. Rotate the torque wrench to check the torque of the nut of the roof bolt through the auxiliary rod 1, without the need to step on a ladder, improving the efficiency of torque inspection for the nuts of the roof bolts in the roadway. Through the pressure given by the jacking rod 4, the deviation of the auxiliary rod 1 during the rotation of the torque wrench can be effectively reduced, thereby improving the stability of the position of the auxiliary rod 1 and also improving the accuracy of torque inspection for the nuts of the roof bolts.

[0031] The auxiliary rod 1 can be disassembled from the roof bolt by pushing the unlocking cylinder 61 upward, thus facilitating the torque inspection of the nuts of multiple roof bolts in the roadway. Embodiment 2

[0032] Reference Figure 7 , the difference between this embodiment and Embodiment 1 is as follows: A clamping groove 32 is provided in the top platform part of the chassis 3, and a clamping hoop 31 is fixedly provided on one leg of the chassis 3. After the legs of the chassis 3 are retracted, the auxiliary rod 1 can be simultaneously clamped within the clamping groove 32 and the clamping hoop 31. An insertion hole 33 is also provided in the top platform part of the chassis 3, and the torque wrench can be inserted and fixed within the insertion hole 33.

[0033] The difference in the implementation principle of Embodiment 2 of this application is that: both the auxiliary rod 1 and the torque wrench can be centrally and fixedly placed on the chassis 3, thereby facilitating the overall movement of the tools for torque inspection of the roof bolts, improving the portability of the tools. Embodiment 3

[0034] Reference Figure 8 , the difference between this embodiment of this application and Embodiment 2 is as follows: The auxiliary rod 1 includes a bottom rod 12 and a top rod 11, and the bottom rod 12 is threadedly connected to the bottom of the top rod 11. The fixing plate 2 and the unlocking assembly 6 are both located on the top rod 11. The bottom button 122 is located on the bottom rod 12. A bottom ring plate 121 is rotatably connected to the outer circumferential wall of the bottom rod 12, and a top ring plate 111 is rotatably connected to the outer circumferential wall of the top rod 11. The bottom ring plate 121 is rotatably connected to a bottom frame 1211, and the top ring plate 111 is rotatably connected to a top frame 1111, and the top frame 1111 and the bottom frame 1211 are rotatably connected to each other. When the bottom button 122 is located within the inner groove 422 (reference Figure 4 ) and the top rod 11 is separated from the bottom rod 12, the top rod 11 can be simultaneously located within the clamping hoop 31 and the clamping groove 32.

[0035] The difference in the implementation principle of Embodiment 3 of this application lies in that the auxiliary rod 1 is disassembled into two parts, which can reduce the overall length when the auxiliary rod 1 is stored and placed. When the top rod 11 is fixed to the chassis 3, the bottom rod 12 can be fixed to the lifting rod 4, thereby improving the firmness of the fixation of the auxiliary rod 1 to the chassis 3.

[0036] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application. Among them, the drawings in the specification are only for understanding, and the proportional relationship in the drawings does not represent the actual situation.

Claims

1. An auxiliary tool for checking the torque of roof bolts in a roadway, characterized in that: including an auxiliary rod (1) with a fixed plate (2) at the top. The fixed plate (2) is provided with a counterbore (21) with a regular hexagon inside, and a bottom button (122) with a regular hexagon cross-section at the bottom. The bottom button (122) can be tightened by a torque wrench; a chassis (3) located below the auxiliary rod (1), with a jacking rod (4) slidably connected up and down in the middle. A set of sliding rings (411) are rotatably connected to both sides of the bottom of the jacking rod (4), and a traction cable (4111) is tied to the sliding rings (411); a mounting bracket (5) installed on the chassis (3) and located on one side of the jacking rod (4); a footrest (51) slidably connected up and down on the mounting bracket (5). The part where the footrest (51) is slidably connected to the mounting bracket (5) passes through the mounting bracket (5). Another set of sliding rings (411) are rotatably connected to both sides of the part where the footrest (51) is slidably connected to the mounting bracket (5). The two sliding rings (411) of the footrest (51) are located outside the mounting bracket (5). Pulleys (52) are rotatably connected to both sides of the top of the mounting bracket (5). The other end of the traction cable (4111) is placed on the pulleys (52) and fixedly connected to the sliding rings (411) of the footrest (51). The weight of the jacking rod (4) can drive the footrest (51) to move to the top; the top end of the jacking rod (4) can abut against the bottom of the torque wrench and press the auxiliary rod (1) tightly against the gasket of the roof bolt.

2. The auxiliary tool for checking the torque of the roof bolt in the roadway according to claim 1, characterized in that: The jacking rod (4) includes a main rod (41) and a sub-rod (42). The main rod (41) is slidably connected to the chassis (3). A sliding groove (412) is opened at the top of the main rod (41), and the sub-rod (42) is slidably connected to the main rod (41) in the sliding groove (412); a spring piece (421) is fixedly embedded in the circumferential inner wall of the sub-rod (42), and a plurality of clamping holes (413) are spaced apart on the circumferential outer wall of the main rod (41). The clamping block of the spring piece (421) can be stuck in the clamping holes (413).

3. The auxiliary tool for checking the torque of the roof bolt in the roadway according to claim 2, characterized in that: The clamping block of the spring piece (421) is in a "V" shape and the opening faces one side. The bottom of the clamping block of the spring piece (421) extends downward for anti-disengagement setting. The clamping block of the spring piece (421) is made of the same material as the spring piece (421) and is integrally bent and formed.

4. An auxiliary tool for checking the torque of roof bolts in a roadway, as described in claim 1, characterized in that: A plurality of mounting plates (22) are installed on the upper surface of the fixed plate (2). A rotating groove (221) is opened on the inner wall of the mounting plate (22) close to the counterbore (21). A sector-shaped positioning plate (222) is rotatably connected to the top wall of the rotating groove (221). A torsion spring is arranged on the rotating shaft of the positioning plate (222), so that the positioning plate (222) rotates out of the rotating groove (221). The bottom of the positioning plate (222) abuts against the inner bottom wall of the rotating groove (221) so that the positioning plate (222) cannot completely disengage from the rotating groove (221); The positioning plate (222) can abut against the nut of the roof bolt. When the nut of the roof bolt is located in the counterbore (21) and at the deepest position, the part of the positioning plate (222) extending out of the rotating groove (221) is directly opposite to the top part of the roof bolt nut; The fixed plate (2) is provided with an unlocking assembly (6) for making the positioning plate (222) completely located in the rotating groove (221).

5. An auxiliary tool for checking the torque of roof bolts in a roadway, as described in claim 4, characterized in that: The unlocking assembly (6) includes an unlocking cylinder (61), an unlocking spring (62), an unlocking rod (63) and an unlocking plate (64); The unlocking plate (64) is fixedly arranged on the positioning plate (222) and is located at the part of the positioning plate (222) within the rotation groove (221). The unlocking cylinder (61) is slidably connected to the auxiliary rod (1). One end of the unlocking spring (62) is fixedly connected to the lower surface of the fixed plate (2), and the other end is fixedly connected to the top end of the unlocking cylinder (61). An unlocking hole (23) communicating with the rotation groove (221) is formed at the bottom of the unlocking plate (64). The unlocking hole (23) is opposite to the unlocking plate (64). The unlocking rod (63) is slidably connected within the unlocking hole (23), and the part of the unlocking rod (63) extending out of the unlocking hole (23) is fixedly connected to the unlocking cylinder (61). The unlocking cylinder (61) can drive the unlocking rod (63) to abut against the unlocking plate (64) and make the positioning plate (222) completely located within the rotation groove (221).

6. An auxiliary tool for checking the torque of roof bolts in a roadway, as described in claim 1, characterized in that: An inner groove (422) for the bottom button (122) to extend into is formed at the top end of the lifting rod (4). Clamping strips (4221) are fixedly arranged on the circumferential inner wall of the inner groove (422), and a clamping ring groove (1221) for the clamping strips (4221) to be clamped into is formed on the circumferential outer wall of the bottom button (122).

7. An auxiliary tool for checking the torque of roof bolts in a roadway, according to claim 6, characterized in that: The bottom frame (3) is of a tripod structure. A clamp (31) is fixedly arranged on one leg of the bottom frame (3). A clamping groove (32) is formed in the platform part at the top of the bottom frame (3). After the legs of the bottom frame (3) are retracted, the auxiliary rod (1) can be simultaneously clamped into the clamp (31) and the clamping groove (32).

8. An auxiliary tool for checking the torque of roof bolts in a roadway, according to claim 7, characterized in that: The auxiliary rod (1) includes a bottom rod (12) and a top rod (11). The bottom rod (12) is threadedly connected to the bottom of the top rod (11). The fixed plate (2) is located on the top rod (11). A bottom ring plate (121) is rotatably connected to the circumferential outer wall of the bottom rod (12), and a top ring plate (111) is rotatably connected to the circumferential outer wall of the top rod (11). A bottom frame (1211) is rotatably connected to the bottom ring plate (121), and a top frame (1111) is rotatably connected to the top ring plate (111). The top frame (1111) and the bottom frame (1211) are rotatably connected to each other. When the bottom button (122) is located within the inner groove (422) and the top rod (11) is separated from the bottom rod (12), the top rod (11) can be simultaneously located within the clamp (31) and the clamping groove (32).

9. An auxiliary tool for checking the torque of roof bolts in a roadway, according to claim 7, characterized in that: An insertion hole (33) for inserting and fixing a torque wrench is formed in the top platform of the bottom frame (3).

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