Variable-speed labor-saving wrench special for track bolt

By designing a special variable-speed, labor-saving wrench for rail bolts, a snap-fit ​​mechanism and spring structure are used to enable quick nut replacement. Combined with a gearbox and extension rod structure, this solves the problem of cumbersome nut replacement with existing wrenches, improving maintenance efficiency and ease of operation.

CN223820438UActive Publication Date: 2026-01-23SUZHOU RAIL TRANSIT OPERATION CO LTD
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Patent Information

Application Number
CN202520418245.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-01-23
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

Existing wrenches require different nuts to be replaced when tightening or loosening bolts, making the replacement process cumbersome and complicated, and affecting maintenance efficiency.

Method used

A variable-speed, labor-saving wrench specifically designed for rail bolts was developed. By incorporating a snap-fit ​​mechanism and a spring structure on the wrench, it enables quick nut replacement. Furthermore, the gearbox and extension rod structure enhance operational convenience and flexibility.

Benefits of technology

It enables quick and convenient replacement of nuts, reduces replacement time, improves track maintenance efficiency, and reduces the workload of workers, adapting to the fastening and disassembly needs of different scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a special variable-speed labor-saving wrench for a track bolt, which relates to the technical field of railway maintenance tools and comprises a wrench component, a mounting component is arranged at the bottom of the wrench component, a splicing component is arranged at the top of the wrench component, and a handle component is arranged at the top of the splicing component. The wrench assembly comprises a transmission and a wrench, the mounting assembly comprises a nut, and a plurality of clamping blocks are distributed on the outer side of the nut. The wrench is inserted into the nut, the rotating base is used for rotating during insertion, then the buckling piece is driven to be buckled with the clamping block, operation is convenient and fast, complex installation operation is not needed, the nut replacing efficiency is improved, the nut can be replaced fast and conveniently, and the nut replacing efficiency is improved. And the time required for replacing the nut is shortened, so that the track maintenance efficiency is improved, the spring is beneficial to providing a supporting effect for buckling of the buckling piece, and the buckling stability of the buckling piece and the clamping block is guaranteed.
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Description

TECHNICAL FIELD

[0001] The utility model relates to railway maintenance tool technical field especially relates to a track bolt special variable speed labor saving wrench. BACKGROUND

[0002] In the daily maintenance work of railway track, the fastening and dismounting of track bolt is a frequent and important task. In the daily maintenance work of railway track, it can efficiently complete the fastening work of track bolt. Through its unique variable speed and labor saving design, the torque can be accurately adjusted according to the requirements of bolt stability of different track area key parts, so that the bolt fastening degree meets the safety standard, and the stability of track is greatly improved.

[0003] The existing wrench needs to replace the nut on the wrench according to different bolts when fastening and dismounting the bolt, but the existing nut mounting structure is relatively complicated when replacing the nut, thereby reducing the maintenance efficiency and affecting the work efficiency. UTILITY MODEL CONTENTS

[0004] The utility model discloses a track bolt special variable speed labor saving wrench to solve the problem that the wrench needs to replace the nut on the wrench according to different bolts when fastening and dismounting the bolt in the prior art, but the existing nut mounting structure is relatively complicated when replacing the nut, thereby reducing the maintenance efficiency and affecting the work efficiency.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a track bolt special variable speed labor saving wrench, including wrench assembly, the bottom of wrench assembly is provided with installation assembly, the top of wrench assembly is provided with splicing assembly, the top of splicing assembly is provided with shake hand assembly, the wrench assembly includes the speed changer and the wrench, the installation assembly includes the nut, the outside of nut is distributed with a plurality of clamping blocks, the outside of wrench is evenly distributed with a plurality of rotating seats, the outside of rotating seat is connected with buckle piece, the buckle piece is buckled with clamping block, the outside of buckle piece is connected with spring.

[0006] Preferably, the splicing assembly includes an extension rod and a splicing rod, the bottom of the extension rod is provided with a first connecting barrel, the bottom of the splicing rod is provided with a second connecting barrel, the inside of the first connecting barrel is provided with a first plug-in block, and the inside of the second connecting barrel is provided with a second plug-in block.

[0007] Preferably, the wrench is plugged into the inside of the nut, and the speed changer is provided with a connecting head.

[0008] Preferably, the first plug-in block is plugged into the top of the splicing rod, and the second plug-in block is plugged into the top of the connecting head.

[0009] Preferably, the first connecting barrel and the second connecting barrel are internally penetrated by the limiting rod.

[0010] Preferably, the top of the extension rod is provided with a connecting piece, and the handle assembly comprises a connecting plate.

[0011] Preferably, the bottom of the connecting plate is provided with a connecting groove, and the connecting piece is internally arranged in the connecting groove.

[0012] Preferably, the top of the connecting plate is provided with a handle, the outer side of the handle is sleeved with a soft pad, and the outer side of the soft pad is provided with a friction pad.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that,

[0014] 1. In the utility model, the wrench is inserted into the inside of the nut, and the rotating seat is used for rotating during the insertion, so as to drive the buckle piece to buckle with the clamping block, the operation is convenient and fast, complicated installation operation is not needed, the efficiency of replacing the nut is improved, the nut can be quickly and conveniently replaced, the time required for replacing the nut is shortened, the efficiency of track maintenance is improved, the spring is beneficial to providing support for the buckling of the buckle piece, and the stability of the buckling of the buckle piece and the clamping block is ensured.

[0015] 2. In the utility model, the first insertion block is inserted into the top of the splicing rod, the length can be adjusted in time according to the requirement, the operation posture of the maintenance personnel can be flexibly adjusted during operation, the convenience and flexibility of operation are improved, the work burden of the laborer is further reduced, the work efficiency is improved, the fastening and dismounting requirements of different scenes are adapted, the limiting rod is internally penetrated in the first connecting barrel, the limiting is beneficial to being performed, the stability and reliability of the splicing operation are ensured, the second insertion block is inserted into the inside of the connecting head when splicing is needed, and the first insertion block is inserted into the top of the connecting head when splicing is not needed, so that the wrench assembly can be conveniently connected and installed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic diagram of the utility model is provided for a rail bolt special variable speed labor-saving wrench;

[0017] Figure 2 Another angle structure schematic diagram of the utility model is provided for a rail bolt special variable speed labor-saving wrench;

[0018] Figure 3 A connecting assembly exploded structure schematic diagram of the utility model is provided for a rail bolt special variable speed labor-saving wrench;

[0019] Figure 4The utility model provides a rail bolt special speed changing labor saving wrench's partial disassembly structure schematic diagram.

[0020] Figure 5 The utility model provides a rail bolt special speed changing labor saving wrench's another angle splicing subassembly disassembly structure schematic diagram.

[0021] Figure 6 The utility model provides a rail bolt special speed changing labor saving wrench's partial disassembly structure schematic diagram.

[0022] Figure 7 The utility model provides a rail bolt special speed changing labor saving wrench's partial disassembly structure schematic diagram.

[0023] Legend: 1, wrench assembly;101, transmission;102, wrench;103, connecting head;2, installation assembly;201, nut;202, clamping block;203, rotating seat;204, buckle piece;205, spring;3, splicing assembly;301, extension rod;302, connecting piece;303, splicing rod;304, first connecting barrel;305, first plug-in block;306, limiting rod;307, second connecting barrel;308, second plug-in block;4, shaking hand assembly;401, connecting plate;402, connecting groove;403, shaking hand;404, soft pad;405, friction pad. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the drawings and examples. It should be explained that, in the case of no conflict, the embodiment of the application and the features in the embodiment can be combined with each other.

[0025] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description, therefore, the utility model is not limited to the specific embodiment of the following disclosure.

[0026] Example 1: as Figures 1-7As shown, the utility model provides a technical scheme: a variable speed labor-saving wrench special for rail bolt, including wrench assembly 1, the bottom of wrench assembly 1 is provided with installation component 2, the top of wrench assembly 1 is provided with splicing component 3, the top of splicing component 3 is provided with shake hand component 4, wrench assembly 1 includes transmission 101 and wrench 102, installation component 2 includes nut 201, a plurality of clamping blocks 202 are distributed on the outside of nut 201, a plurality of rotating seats 203 are evenly distributed on the outside of wrench 102, the outside of rotating seat 203 is connected with buckle piece 204, buckle piece 204 is buckled with clamping block 202, spring 205 is connected on the outside of buckle piece 204, wrench 102 is inserted in the inside of nut 201, transmission 101 is provided with connecting head 103.

[0027] In the embodiment, by inserting wrench 102 in the inside of nut 201, rotating seat 203 is used to rotate during insertion, and then buckle piece 204 is buckled with clamping block 202, which is convenient and fast to operate, without complex installation operation, improves the efficiency of replacing nut 201, is favorable for realizing that nut 201 is replaced quickly and conveniently, shortens the time required for replacing nut 201, thereby improving the efficiency of track maintenance, spring 205 is favorable for providing support for the buckle of buckle piece 204, guarantees the stability of the buckle of buckle piece 204 and clamping block 202, and the transmission 101 has fast and slow two gears, which can be adjusted according to the on-site demand.

[0028] Embodiment 2: as Figures 1-7 As shown, splicing component 3 includes extension rod 301 and splicing rod 303, the bottom of extension rod 301 is provided with first connecting barrel 304, the bottom of splicing rod 303 is provided with second connecting barrel 307, the inside of first connecting barrel 304 is provided with first insertion block 305, the inside of second connecting barrel 307 is provided with second insertion block 308, first insertion block 305 is inserted in the top of splicing rod 303, second insertion block 308 is inserted in the top of connecting head 103, the inside of first connecting barrel 304 and second connecting barrel 307 is penetrated by limiting rod 306, the top of extension rod 301 is provided with connecting piece 302, shake hand component 4 includes connecting plate 401, the bottom of connecting plate 401 is provided with connecting groove 402, connecting piece 302 is inserted in the inside of connecting groove 402, the top of connecting plate 401 is provided with shake hand 403, the outside of shake hand 403 is provided with soft pad 404, and the outside of soft pad 404 is distributed with friction pad 405.

[0029] In the embodiment, by inserting the first plug-in block 305 at the top of the splicing rod 303, it is beneficial to splice according to the demand, so as to adjust the length in time, so that the maintenance personnel can flexibly adjust the operation posture during operation, improve the convenience and flexibility of operation, further reduce the work burden of the workers, improve the work efficiency, and adapt to the fastening and disassembly requirements of different scenes. The limiting rod 306 penetrates the inside of the first connecting barrel 304, which is beneficial to limiting and ensuring the stability and reliability of the splicing operation. When splicing is needed, the second plug-in block 308 is inserted into the inside of the connecting head 103, and when splicing is not needed, the first plug-in block 305 is inserted at the top of the connecting head 103, which facilitates the connection and installation with the wrench assembly 1. By connecting the connecting groove 402 with the connecting piece 302, and then rotating the handle 403, the extension rod 301 and the speed changer 101 are driven to rotate, thereby fastening and disassembling the bolts. The soft pad 404 is sleeved outside the handle 403, which is beneficial to improve the comfort during operation. The friction pad 405 is distributed outside the soft pad 404, which is beneficial to increase the friction force between the hand and the soft pad 404, thereby ensuring the stability during operation and reducing the occurrence of hand slipping. The speed changer 101 works with the extension rod 301, which is beneficial to realize large torque output, thereby realizing high-difficulty disassembly requirements. The speed changer 101 adopts a new type of gear reduction mechanism, which changes the transmission ratio to realize labor-saving effect, thereby being beneficial to adapt to different tightening or loosening requirements, and greatly improving the work efficiency without increasing the physical consumption of the workers.

[0030] The working principle of the embodiment is as follows: in use, first, the wrench 102 is inserted into the inside of the nut 201, and the rotating seat 203 is rotated to drive the buckle member 204 to buckle with the clamping block 202, thereby improving the efficiency of replacing the nut 201; the spring 205 is beneficial to providing support for the buckling of the buckle member 204, thereby ensuring the stability of the buckling of the buckle member 204 and the clamping block 202; the first insertion block 305 is inserted into the top of the spliced rod 303, which is beneficial to splicing according to requirements; the limiting rod 306 is penetrated into the inside of the first connecting cylinder 304, which is beneficial to limiting and ensuring the stability and reliability of the splicing operation; the second insertion block 308 is inserted into the inside of the connecting head 103 when splicing is needed, and the first insertion block 305 is inserted into the top of the connecting head 103 when splicing is not needed, which facilitates the connection and installation of the wrench assembly 1; the connecting groove 402 is connected with the connecting member 302, and then the handle 403 is rotated to drive the extension rod 301 and the speed changer 101 to rotate, thereby fastening or dismounting the bolt; the soft pad 404 is sleeved outside the handle 403, which is beneficial to improving the comfort during operation; the speed changer 101 adopts a novel gear reduction mechanism, which can change the transmission ratio to achieve the labor-saving effect, thereby being beneficial to adapting to different tightening or loosening requirements, and greatly improving the work efficiency without increasing the physical consumption of the laborers.

[0031] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments shall fall within the protection scope of the present application.

Claims

1. A variable-speed, labor-saving wrench specifically for rail bolts, comprising a wrench assembly (1), characterized in that: The wrench assembly (1) has an installation component (2) at its bottom and a splicing component (3) at its top. The splicing component (3) has a crank assembly (4) at its top. The wrench assembly (1) includes a gearbox (101) and a wrench (102). The installation component (2) includes a nut (201). Multiple locking blocks (202) are distributed on the outer side of the nut (201). Multiple rotating seats (203) are evenly distributed on the outer side of the wrench (102). A fastening element (204) is connected to the outer side of the rotating seat (203). The fastening element (204) is engaged with the locking block (202). A spring (205) is connected to the outer side of the fastening element (204).

2. The variable-speed, labor-saving wrench for track bolts according to claim 1, characterized in that: The splicing assembly (3) includes an extension rod (301) and a splicing rod (303). The bottom of the extension rod (301) is provided with a first connecting tube (304), and the bottom of the splicing rod (303) is provided with a second connecting tube (307). The first connecting tube (304) is provided with a first insert block (305), and the second connecting tube (307) is provided with a second insert block (308).

3. The variable-speed, labor-saving wrench for track bolts according to claim 1, characterized in that: The wrench (102) is inserted inside the nut (201), and the gearbox (101) is equipped with a connector (103).

4. The variable-speed, labor-saving wrench for track bolts according to claim 2, characterized in that: The first insert block (305) is inserted into the top of the splicing rod (303), and the second insert block (308) is inserted into the top of the connector (103).

5. The variable speed, labor-saving wrench for track bolts according to claim 2, characterized in that: Limiting rods (306) pass through the interior of both the first connecting cylinder (304) and the second connecting cylinder (307).

6. The variable speed, labor-saving wrench for track bolts according to claim 2, characterized in that: The extension rod (301) is fitted with a connector (302) at its top, and the hand crank assembly (4) includes a connecting plate (401).

7. The variable-speed, labor-saving wrench for track bolts according to claim 6, characterized in that: The bottom of the connecting plate (401) is provided with a connecting groove (402), and the connector (302) is installed inside the connecting groove (402).

8. The variable speed, labor-saving wrench for track bolts according to claim 6, characterized in that: A crank (403) is installed on the top of the connecting plate (401), and a soft pad (404) is sleeved on the outside of the crank (403). Friction pads (405) are distributed on the outside of the soft pad (404).