Special tool for fastening high-clearance equipment

Abstract

The special tool for fastening the high-clearance equipment comprises a handle and a telescopic rod, the telescopic rod is installed at the top end of the handle in a sliding mode, the top end of the telescopic rod is sleeved with a supporting sleeve, a positioning sleeve is installed at the top end of the supporting sleeve in a sliding mode, and a connecting column is installed at the top end of the positioning sleeve. And a sleeve is mounted at the top end of the connecting column. According to the special tool for fastening the high-clearance equipment, the special tool for fastening the high-clearance equipment can be conveniently and telescopically adjusted and used, and a large amount of labor cost can be saved in the visual inspection and fastening process of the whole-line high-clearance equipment; by means of the special tool for visual inspection and fastening of the high-clearance equipment, fastening of the high-clearance equipment can be carried out without the help of an engineering vehicle, visual inspection can be carried out without climbing, the use requirements of the engineering vehicle are reduced, precious bullet train resources are saved, working efficiency is improved, safety risks are reduced, and the special tool for visual inspection and fastening of the high-clearance equipment is suitable for popularization and application. The tool does not need to climb up and down the ladder vehicle frequently, and the tool is easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of special tooling, in particular to a special tooling for fastening high-headroom equipment. Background Art

[0002] Urban rail transit contact network equipment has the "three highs" characteristics of high altitude, high voltage and high risk. The equipment is located in special high-clearance sections such as covered parking lots and open-cut sections of stations. Some hanging columns and equipment cables are usually installed at heights of 10 to 15 meters. The nut tightening and equipment status in this area cannot be inspected using conventional climbing tools. If it is completed with the assistance of an engineering vehicle and a ladder, not only is the cost of a single maintenance high, but there are also certain operational risks, which seriously affects the maintenance efficiency.

[0003] Currently, there are no maintenance tools for high-headroom equipment in the industry. Therefore, through in-depth research, our team has developed a special tool for tightening and visual inspection of high-headroom equipment, so as to realize the inspection and tightening of high-headroom equipment; thereby improving the maintenance efficiency of high-headroom equipment and reducing operational safety risks.

[0004] Existing special tooling of this type is generally not conducive to convenient telescopic adjustment during use, and is not convenient for visual inspection of high-headroom equipment throughout the line, which increases a lot of labor costs during the tightening process. It is not convenient to tighten high-headroom equipment without the help of engineering vehicles and to perform visual inspections without climbing. This increases the demand for the use of engineering vehicles, affects work efficiency and safety risks, requires frequent climbing up and down ladders, and the tool operation is complicated. Utility Model Content

[0005] The purpose of the present utility model is to provide a special tool for fastening high-headroom equipment, so as to solve the problems proposed in the above-mentioned background technology that the special tool is not convenient for convenient telescopic adjustment and use, is not convenient for visual inspection of high-headroom equipment on the entire line, and increases a lot of manpower costs in the fastening process, is not convenient for fastening high-headroom equipment without the aid of an engineering vehicle and for visual inspection without climbing, increases the demand for the use of engineering vehicles, affects work efficiency and safety risks, requires frequent climbing up and down ladder vehicles, and has complicated tool operation.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a special tool for fastening high-headroom equipment, comprising a handle and a telescopic rod, the top end of the handle being slidably installed with the telescopic rod, the top end of the telescopic rod being sleeved with a support sleeve, the top end of the support sleeve being slidably installed with a positioning sleeve, the top end of the positioning sleeve being installed with a connecting column, the top end of the connecting column being installed with a sleeve, a rear arc arm being installed on the outer wall of the positioning sleeve, a positioning frame being installed on the side wall of the rear arc arm, a wireless camera being provided on the outside of the positioning frame, a connecting seat being installed on the side of the wireless camera close to the positioning frame, a connecting arm being provided on the outer wall of the connecting seat, a front clamping shaft being installed on one end of the connecting seat close to the connecting arm, and the front clamping shaft extending to the outside of the connecting arm, a rear clamping shaft being installed on the bottom end of the connecting arm, and the rear clamping shaft extending to the outside of the positioning frame.

[0007] Preferably, a first bolt is installed on the outer wall of the handle on one side of the telescopic rod, and the first bolt extends to the surface of the telescopic rod.

[0008] Preferably, a second bolt is installed on the outer wall of the support sleeve on one side of the telescopic rod, and the second bolt extends to the surface of the telescopic rod, and a third bolt is installed on the outer wall of the support sleeve on one side of the positioning sleeve, and the third bolt extends to the surface of the positioning sleeve.

[0009] Preferably, a fourth bolt is installed on the outer wall of the positioning sleeve on one side of the connecting column, and the fourth bolt extends to the surface of the connecting column.

[0010] Preferably, a front arc-shaped arm is provided at one end of the rear arc-shaped arm, a hinge shaft is installed at one end of the front arc-shaped arm close to the rear arc-shaped arm, and the front arc-shaped arm is movably connected to the rear arc-shaped arm through the hinge shaft.

[0011] Preferably, a U-shaped block is installed at one end of the front arc-shaped arm away from the hinge axis, a T-shaped bolt is movably installed on the outer wall of the rear arc-shaped arm on one side of the U-shaped block, and the T-shaped bolt extends to the outside of the U-shaped block, and a butterfly nut is mounted on the surface of the T-shaped bolt.

[0012] Preferably, a first toothed chuck is installed at one end of the front chuck away from the connecting seat, a first latch is installed on the outer wall of the connecting arm on one side of the first toothed chuck, and the first latch is engaged with the first toothed chuck.

[0013] Preferably, a second toothed chuck is installed at one end of the rear chuck shaft away from the connecting arm, a second latch is installed on the outer wall of the positioning frame on one side of the second toothed chuck, and the second latch is engaged with the second toothed chuck.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the special tooling not only realizes the convenient telescopic adjustment of the special tooling for fastening high-headroom equipment, but also facilitates the visual inspection and fastening process of high-headroom equipment on the entire line, which can save a lot of manpower costs. The special tooling for visual inspection and fastening of high-headroom equipment can be used to fasten high-headroom equipment without the help of engineering vehicles and to perform visual inspection without climbing, thereby reducing the need for the use of engineering vehicles, saving valuable motor vehicle resources, improving work efficiency, and reducing safety risks. The use of the tool does not require frequent climbing up and down ladder vehicles, and the tool is simple to operate.

[0015] (1) The handheld handle is used to facilitate the wireless camera to collect images, and the user can use the mobile phone to facilitate the viewing of images. The sleeve is used to facilitate contact with the bolt. The handle is manually rotated to drive the telescopic rod, support sleeve, positioning sleeve, connecting column, and sleeve to rotate, so as to facilitate the tightening of the bolt. The telescopic rod can slide inside the handle and the support sleeve to facilitate the adjustment of the telescopic length. When the positioning sleeve and the support sleeve need to be separated, the third bolt is rotated to turn the positioning sleeve and the support sleeve from a compressed state to a loose state by the third bolt, so as to facilitate the removal of the positioning sleeve. When the connecting column and the sleeve need to be replaced, the fourth bolt is rotated to turn the connecting column and the positioning sleeve from a compressed state to a loose state by the fourth bolt, so as to facilitate the removal of the connecting column and the sleeve, so as to facilitate the convenient disassembly and assembly of the special tooling for fastening high-headroom equipment, facilitate the independent disassembly and replacement of a component after damage, realize the convenient telescopic adjustment of the special tooling for fastening high-headroom equipment, facilitate the convenient modular disassembly and replacement of the special tooling, and reduce the maintenance and replacement cost of the special tooling after damage.

[0016] (2) By connecting the positioning frame with the rear arc arm, the front arc arm is connected to the rear arc arm through the hinge shaft, the T-bolt is inserted into the outside of the U-shaped block, and the butterfly nut is set on the surface of the T-bolt. The front arc arm and the rear arc arm cooperate to fix it with the positioning sleeve, so as to facilitate the fixation of the wireless camera. When the wireless camera is rotated, the wireless camera drives the connecting arm to rotate through the connecting seat. The connecting arm rotates with the rear clamping shaft as the axis. The second tongue and the second toothed chuck cooperate to play a damping support role when the connecting arm rotates. When the wireless camera drives the connecting seat to rotate, the connecting seat rotates with the front clamping shaft as the axis. The first tongue and the first toothed chuck cooperate to play a damping support role when the connecting seat rotates, so as to facilitate the rotation adjustment of the wireless camera, so as to facilitate the flexible adjustment of the wireless camera to the required angle, thereby realizing the flexible rotation adjustment of the special tooling for fastening high-headroom equipment to collect pictures, and improving the convenience of rotation adjustment when the special tooling collects pictures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the support sleeve of the utility model;

[0019] Figure 3 This is a three-dimensional enlarged structural diagram of the positioning sleeve of the utility model;

[0020] Figure 4 This is a schematic diagram of the front cross-sectional structure of the connecting arm of the present invention;

[0021] Figure 5 This is a front view structural diagram of the second toothed chuck of the present invention;

[0022] Figure 6 This is a schematic diagram of the top view of the positioning frame of the utility model;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the butterfly nut of the present invention;

[0024] Figure 8 This is a three-dimensional enlarged structural diagram of the first toothed chuck of the utility model;

[0025] Figure 9 It is a three-dimensional enlarged structural schematic diagram of the second toothed chuck of the present invention.

[0026] In the figure: 1. handle; 2. first bolt; 3. telescopic rod; 4. second bolt; 5. support sleeve; 6. third bolt; 7. positioning sleeve; 8. fourth bolt; 9. connecting column; 10. sleeve; 11. positioning frame; 12. rear arc arm; 13. hinge shaft; 14. front arc arm; 15. butterfly nut; 16. U-shaped block; 17. T-bolt; 18. rear clamping shaft; 19. connecting arm; 20. connecting seat; 21. wireless camera; 22. front clamping shaft; 23. first toothed chuck; 24. first tongue; 25. second tongue; 26. second toothed chuck. DETAILED DESCRIPTION

[0027] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0028] See also Figure 1-9The utility model provides an embodiment of a special tool for fastening high-headroom equipment, comprising a handle 1 and a telescopic rod 3, the top of the handle 1 is slidably installed with the telescopic rod 3, the top of the telescopic rod 3 is sleeved with a support sleeve 5, the top of the support sleeve 5 is slidably installed with a positioning sleeve 7, the top of the positioning sleeve 7 is installed with a connecting column 9, the top of the connecting column 9 is installed with a sleeve 10, the outer wall of the positioning sleeve 7 is installed with a rear arc arm 12, the side wall of the rear arc arm 12 is installed with a positioning frame 11, a wireless camera 21 is arranged on the outside of the positioning frame 11, the wireless camera 21 model is the same type of chip as the VICOHOME smart battery camera, a connecting seat 20 is installed on the side of the wireless camera 21 close to the positioning frame 11, a connecting arm 19 is provided on the outer wall of the connecting seat 20, a front card shaft 22 is installed at one end of the connecting seat 20 close to the connecting arm 19, and the front card shaft 22 extends to the outside of the connecting arm 19, and a rear card shaft 18 is installed at the bottom end of the connecting arm 19, and the rear card shaft 18 extends to the outside of the positioning frame 11;

[0029] A first bolt 2 is installed on the outer wall of the handle 1 on one side of the telescopic rod 3, and the first bolt 2 extends to the surface of the telescopic rod 3, and the first bolt 2 plays a role of connection and fixing;

[0030] A second bolt 4 is installed on the outer wall of the support sleeve 5 on one side of the telescopic rod 3, and the second bolt 4 extends to the surface of the telescopic rod 3, and the second bolt 4 plays a role of connection and fixing. A third bolt 6 is installed on the outer wall of the support sleeve 5 on one side of the positioning sleeve 7, and the third bolt 6 plays a role of connection and fixing, and the third bolt 6 extends to the surface of the positioning sleeve 7;

[0031] A fourth bolt 8 is installed on the outer wall of the positioning sleeve 7 on one side of the connecting column 9, and the fourth bolt 8 extends to the surface of the connecting column 9;

[0032] The contact network equipment of urban rail transit has the "three highs" characteristics of high altitude, high voltage and high risk. The equipment is located in special high-clearance sections such as covered parking lots and open-cut sections of stations. Some suspenders and equipment cables are installed at higher positions. Special tooling is used to inspect and tighten the high-clearance equipment of the contact network of urban rail transit. The handheld handle 1 is used to facilitate the wireless camera 21 to collect images, and the user can use the mobile phone to facilitate the viewing of the images. The sleeve 10 is used to facilitate contact with the bolt. The handle 1 is manually rotated to drive the telescopic rod 3, the support sleeve 5, the positioning sleeve 7, the connecting column 9, and the sleeve 10 to rotate to facilitate the tightening of the bolts. The telescopic rod 3 can slide inside the handle 1 and the support sleeve 5 to facilitate the adjustment of the telescopic length. The first bolt 2 fixes the handle 1 and the telescopic rod 3. The second bolt 4 fixes the telescopic rod 3 and the supporting sleeve 5. When the positioning sleeve 7 and the supporting sleeve 5 need to be separated, the third bolt 6 is rotated, and the third bolt 6 turns the positioning sleeve 7 and the supporting sleeve 5 from a compressed state to a loose state, which facilitates the disassembly of the positioning sleeve 7. When the connecting column 9 and the sleeve 10 need to be replaced, the fourth bolt 8 is rotated, and the fourth bolt 8 turns the connecting column 9 and the positioning sleeve 7 from a compressed state to a loose state, which facilitates the disassembly of the connecting column 9 and the sleeve 10, and facilitates the convenient disassembly and assembly of the special tooling for fastening high-headroom equipment, facilitates the independent disassembly and replacement of a component after damage, realizes the convenient telescopic adjustment use of the special tooling for fastening high-headroom equipment, facilitates the convenient modular disassembly and replacement use of the special tooling, and reduces the maintenance and replacement cost after the special tooling is damaged.

[0033] A front arc-shaped arm 14 is provided at one end of the rear arc-shaped arm 12, and a hinge shaft 13 is installed at one end of the front arc-shaped arm 14 close to the rear arc-shaped arm 12, and the front arc-shaped arm 14 is movably connected to the rear arc-shaped arm 12 through the hinge shaft 13;

[0034] A U-shaped block 16 is mounted on one end of the front arc-shaped arm 14 away from the hinge shaft 13. A T-shaped bolt 17 is movably mounted on the outer wall of the rear arc-shaped arm 12 on one side of the U-shaped block 16. The T-shaped bolt 17 extends to the outside of the U-shaped block 16. A butterfly nut 15 is mounted on the surface of the T-shaped bolt 17.

[0035] A first toothed chuck 23 is mounted on one end of the front chuck shaft 22 away from the connecting seat 20. A first latching tongue 24 is mounted on the outer wall of the connecting arm 19 on one side of the first toothed chuck 23, and the first latching tongue 24 is engaged with the first toothed chuck 23.

[0036] A second toothed chuck 26 is mounted on one end of the rear chuck shaft 18 away from the connecting arm 19. A second latch 25 is mounted on the outer wall of the positioning frame 11 on one side of the second toothed chuck 26, and the second latch 25 is engaged with the second toothed chuck 26.

[0037] By connecting the positioning frame 11 with the rear arc-shaped arm 12, the front arc-shaped arm 14 is connected to the rear arc-shaped arm 12 through the hinge shaft 13, the T-bolt 17 is inserted into the outside of the U-shaped block 16, and the butterfly nut 15 is sleeved on the surface of the T-bolt 17. Under the cooperation of the front arc-shaped arm 14 and the rear arc-shaped arm 12, it is fixed together with the positioning sleeve 7 to facilitate the fixation of the wireless camera 21. The wireless camera 21 is rotated, and the wireless camera 21 drives the connecting arm 19 to rotate through the connecting seat 20. The connecting arm 19 rotates with the rear clamping shaft 18 as the axis, and the second toothed chuck 26 supports the second tongue 25. When the rotational force is greater than the resistance of the second tongue 25 and the second toothed chuck 26, the second toothed chuck 26 rotates, and the second tongue 25 and the second The toothed chuck 26 cooperates with the connecting arm 19 to play a damping support role when rotating. When the wireless camera 21 drives the connecting base 20 to rotate, the connecting base 20 rotates with the front clamping shaft 22 as the axis, and the first latch 24 supports the first toothed chuck 23. When the rotational force is greater than the resistance of the first latch 24 and the first toothed chuck 23, the first toothed chuck 23 rotates. The first latch 24 and the first toothed chuck 23 cooperate to play a damping support role when the connecting base 20 rotates, so as to facilitate the rotation adjustment of the wireless camera 21, so as to facilitate the flexible adjustment of the wireless camera 21 to the required angle, thereby realizing the flexible rotation adjustment and collection of pictures of the special tooling for fastening high-headroom equipment, and improving the convenience of rotation adjustment when the special tooling is used to collect pictures;

[0038] To improve the maintenance efficiency of high-headroom equipment and reduce operational safety risks, each high-headroom maintenance operation can reduce 3-4 maintenance workers, and a lot of labor costs can be saved in the visual inspection and tightening process of high-headroom equipment on the entire line. The special tooling for visual inspection and tightening of high-headroom equipment can be used to tighten high-headroom equipment without the help of engineering vehicles and perform visual inspections without climbing, reducing the need for the use of engineering vehicles, saving valuable motor vehicle resources, improving work efficiency, and reducing safety risks. The use of this tool does not require frequent climbing up and down ladders, and the tool is easy to operate.

[0039] When the embodiment of the present application is in use: the urban rail transit contact network equipment has the "three highs" characteristics of high altitude, high voltage and high risk. The equipment is located in special high-clearance sections such as covered parking lots and open-cut sections of stations. Some suspenders and equipment cables are installed at higher positions. Special tooling is used to inspect and tighten the high-clearance equipment of the urban rail transit contact network. The handheld handle 1 is used to facilitate the wireless camera 21 to collect images, and the user can use the mobile phone to facilitate the viewing of the images. The sleeve 10 is used to facilitate contact with the bolt. The handle 1 is manually rotated to drive the telescopic rod 3, the support sleeve 5, the positioning sleeve 7, the connecting column 9, and the sleeve 10 to rotate to facilitate the tightening of the bolt. The telescopic rod 3 can slide inside the handle 1 and the support sleeve 5 to facilitate the adjustment of the telescopic length. When the positioning sleeve 7 and the support sleeve 5 need to be disengaged, the third bolt 6 is rotated, and the third bolt 6 turns the positioning sleeve 7 and the support sleeve 5 from a compressed state to a loose state, which facilitates the disassembly of the positioning sleeve 7. When the connecting column 9 and the sleeve 10 need to be replaced, the fourth bolt 8 is rotated, and the fourth bolt 8 turns the connecting column 9 and the positioning sleeve 7 from a compressed state to a loose state, which facilitates the disassembly of the connecting column 9 and the sleeve 10, which facilitates the convenient disassembly and assembly of the special tooling for fastening high-headroom equipment, and facilitates the independent disassembly and replacement of a component after damage. By connecting the positioning frame 11 to the rear arc arm 12 Together, the front arc-shaped arm 14 is connected to the rear arc-shaped arm 12 through the hinge shaft 13, the T-bolt 17 is inserted into the outside of the U-shaped block 16, and the butterfly nut 15 is set on the surface of the T-bolt 17. The front arc-shaped arm 14 and the rear arc-shaped arm 12 cooperate with each other to fix them with the positioning sleeve 7 to facilitate the fixation of the wireless camera 21. When the wireless camera 21 is rotated, the wireless camera 21 drives the connecting arm 19 to rotate through the connecting seat 20. The connecting arm 19 rotates with the rear card shaft 18 as the axis. The second toothed chuck 26 supports the second tongue 25. When the rotational force is greater than the resistance of the second tongue 25 and the second toothed chuck 26, the second tongue 25 and the second toothed chuck The disk 26 cooperates with the connecting arm 19 to play the role of damping support when rotating. When the wireless camera 21 drives the connecting seat 20 to rotate, the connecting seat 20 rotates with the front clamping shaft 22 as the axis, and the first tongue 24 supports the first toothed chuck 23. When the rotational force is greater than the resistance of the first tongue 24 and the first toothed chuck 23, the first tongue 24 and the first toothed chuck 23 cooperate to play the role of damping support when the connecting seat 20 rotates, so as to facilitate the rotation adjustment of the wireless camera 21, to facilitate the flexible adjustment of the wireless camera 21 to the required angle, to improve the maintenance efficiency of high-headroom equipment and reduce the safety risks of operations, and to complete the use of special tooling.

[0040] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A special tool for fastening high-headroom equipment, characterized by: The invention comprises a handle (1) and a telescopic rod (3), wherein the top end of the handle (1) is slidably mounted with the telescopic rod (3), the top end of the telescopic rod (3) is sleeved with a support sleeve (5), the top end of the support sleeve (5) is slidably mounted with a positioning sleeve (7), the top end of the positioning sleeve (7) is mounted with a connecting column (9), the top end of the connecting column (9) is mounted with a sleeve (10), the outer wall of the positioning sleeve (7) is mounted with a rear arc-shaped arm (12), the side wall of the rear arc-shaped arm (12) is mounted with a positioning frame (11), and the positioning sleeve (7) is mounted with a connecting column (9). A wireless camera (21) is provided on the outside of the positioning frame (11); a connecting seat (20) is installed on the side of the wireless camera (21) close to the positioning frame (11); a connecting arm (19) is provided on the outer wall of the connecting seat (20); a front card shaft (22) is installed on one end of the connecting seat (20) close to the connecting arm (19), and the front card shaft (22) extends to the outside of the connecting arm (19); a rear card shaft (18) is installed at the bottom end of the connecting arm (19), and the rear card shaft (18) extends to the outside of the positioning frame (11).

2. The special tool for fastening high-headroom equipment according to claim 1, characterized in that: A first bolt (2) is installed on the outer wall of the handle (1) on one side of the telescopic rod (3), and the first bolt (2) extends to the surface of the telescopic rod (3).

3. The special tool for fastening high-headroom equipment according to claim 1, characterized in that: A second bolt (4) is installed on the outer wall of the support sleeve (5) on one side of the telescopic rod (3), and the second bolt (4) extends to the surface of the telescopic rod (3); a third bolt (6) is installed on the outer wall of the support sleeve (5) on one side of the positioning sleeve (7), and the third bolt (6) extends to the surface of the positioning sleeve (7).

4. The special tool for fastening high-headroom equipment according to claim 1, characterized in that: A fourth bolt (8) is installed on the outer wall of the positioning sleeve (7) on one side of the connecting column (9), and the fourth bolt (8) extends to the surface of the connecting column (9).

5. The special tool for fastening high-headroom equipment according to claim 1, characterized in that: A front arc-shaped arm (14) is provided at one end of the rear arc-shaped arm (12); a hinge shaft (13) is installed at one end of the front arc-shaped arm (14) close to the rear arc-shaped arm (12); and the front arc-shaped arm (14) is movably connected to the rear arc-shaped arm (12) via the hinge shaft (13).

6. The special tool for fastening high-headroom equipment according to claim 5, characterized in that: A U-shaped block (16) is installed at one end of the front arc-shaped arm (14) away from the hinge shaft (13), and a T-shaped bolt (17) is movably installed on the outer wall of the rear arc-shaped arm (12) on one side of the U-shaped block (16). The T-shaped bolt (17) extends to the outside of the U-shaped block (16), and a butterfly nut (15) is mounted on the surface of the T-shaped bolt (17).

7. The special tool for fastening high-headroom equipment according to claim 1, characterized in that: A first toothed chuck (23) is installed at one end of the front chuck shaft (22) away from the connecting seat (20), a first latching tongue (24) is installed on the outer wall of the connecting arm (19) on one side of the first toothed chuck (23), and the first latching tongue (24) is engaged with the first toothed chuck (23).

8. The special tool for fastening high-headroom equipment according to claim 1, characterized in that: A second toothed chuck (26) is installed at one end of the rear chuck shaft (18) away from the connecting arm (19), a second latching tongue (25) is installed on the outer wall of the positioning frame (11) on one side of the second toothed chuck (26), and the second latching tongue (25) is engaged with the second toothed chuck (26).

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