Auxiliary device for electric wrench
By designing an auxiliary device for electric wrenches, a reliable connection and torque transmission between the electric wrench and the rail bolts are achieved through gear meshing and an intermediate transmission shaft. This solves the problems of inconvenient operation and low efficiency of electric wrenches in railway track maintenance, and improves work efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李会杰
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
In railway track maintenance, electric wrenches are difficult to align precisely with rail bolts in confined spaces, making operation inconvenient and inefficient. Existing auxiliary tools cannot effectively transmit torque, leading to increased worker fatigue and safety risks, and making it difficult to coordinate with other equipment.
An electric wrench auxiliary device was designed, including a housing, a wrench connector, a rail bolt connector, and a transmission assembly. Power transmission is achieved through gear meshing and an intermediate transmission shaft, ensuring reliable connection and torque transmission between the electric wrench and the rail bolt.
It achieves reliable torque transmission of electric wrenches, improves work efficiency, enhances collaborative operation capabilities in complex environments, and improves the overall efficiency and safety of rail maintenance.
Smart Images

Figure CN224129654U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wrench auxiliary tools, specifically to an electric wrench auxiliary device. Background Technology
[0002] In the daily maintenance and construction of railway tracks, electric wrenches serve as essential tools, playing a crucial role in tightening and loosening rail fasteners. However, due to the complex working environment of railway tracks and limitations imposed by factors such as sleeper spacing and track height, electric wrenches often face problems of inconvenience and low efficiency in use. Especially in confined spaces, it is difficult to accurately align the electric wrench with the rail bolts, and prolonged handheld operation can easily lead to worker fatigue, affecting work quality and efficiency.
[0003] Currently, some auxiliary methods assist electric wrench operation through simple supports or manual support. However, these methods have many drawbacks. For example, simple supports have fixed structures, making it difficult to adapt to the different rail operation needs under various working conditions, and they cannot flexibly adjust the angle and position. Manual support not only increases labor costs but also suffers from unstable operation, high safety risks, and cannot guarantee the consistency and reliability of bolt tightening or loosening. At the same time, existing auxiliary tools cannot effectively transmit the torque of the electric wrench, easily resulting in power loss, reduced work efficiency, and difficulty in coordinating with other railway equipment such as rail transporters in complex environments, thus hindering the overall progress of rail maintenance work. Utility Model Content
[0004] Therefore, this utility model provides an electric wrench auxiliary device to solve the above-mentioned problems in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] According to a first aspect of the present invention, an electric wrench auxiliary device includes a housing, a wrench connector, a rail bolt connector, and a transmission assembly. One end of the housing is rotatably connected to the wrench connector, and the other end of the housing is rotatably connected to the rail bolt connector. The wrench connector and the rail bolt connector are connected by the transmission assembly.
[0007] Furthermore, the transmission assembly includes a first gear, a second gear, a third gear, and a fourth gear. The first gear is sleeved on the wrench connector, the fourth gear is sleeved on the rail bolt connector, and the second and third gears are rotatably connected to the housing. The second gear meshes with the first gear, the third gear meshes with the second gear, and the fourth gear meshes with the third gear.
[0008] Furthermore, the transmission assembly also includes a fifth gear and a sixth gear. The fifth gear is provided on one side of the third gear, and the sixth gear is provided on one side of the second gear. The fifth gear and the sixth gear mesh with each other.
[0009] Furthermore, the transmission assembly also includes an intermediate transmission shaft, with the second gear and the third gear each having an intermediate transmission shaft inserted into them, and each intermediate transmission shaft being rotatably connected to the housing.
[0010] Furthermore, the wrench connector includes a wrench connecting part and a first rotating shaft part. One end of the wrench connecting part is connected to the first rotating shaft part, and a first gear is sleeved on the first rotating shaft part. The first rotating shaft part is rotatably connected to the housing.
[0011] Furthermore, the rail bolt connector includes a second rotating shaft, on which a fourth gear is fitted. The second rotating shaft is rotatably connected to the housing, and a connecting hole is provided on the second rotating shaft. The connecting hole is polygonal in shape.
[0012] Furthermore, it also includes a handle, which is provided on one side of the housing.
[0013] Furthermore, it also includes a gear lever, which is located on the other side of the housing.
[0014] Furthermore, the wrench connector is shaped like a polygonal prism.
[0015] Furthermore, a socket is provided on the wrench connector.
[0016] This utility model has the following advantages: the wrench connector enables a reliable connection between the electric wrench and the electric wrench auxiliary device; the rail bolt connector enables a reliable connection between the electric wrench auxiliary device and the rail bolt; and the transmission component enables power to be transmitted to the rail bolt connector when the electric wrench drives the wrench connector to rotate, thereby reliably loosening or tightening the rail bolt. This achieves reliable torque transmission of the electric wrench, increasing work efficiency and enabling collaborative operation with other railway equipment such as rail transporters in complex environments, thus increasing the efficiency of rail maintenance work. Attached Figure Description
[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.
[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0019] Figure 1 The first perspective view of an electric wrench auxiliary device provided for some embodiments of the present utility model.
[0020] Figure 2 This is a second perspective view of an electric wrench auxiliary device provided for some embodiments of the present invention.
[0021] Figure 3 This is a first perspective view of the connection between the wrench connector, rail bolt connector, and transmission component of an electric wrench auxiliary device provided in some embodiments of the present invention.
[0022] Figure 4 This is a second perspective view of the connection between the wrench connector, rail bolt connector, and transmission component of an electric wrench auxiliary device provided in some embodiments of the present invention.
[0023] Figure 5 This is a first perspective view of the first housing of an electric wrench auxiliary device provided for some embodiments of the present invention.
[0024] Figure 6 The second perspective view of the first housing of an electric wrench auxiliary device provided for some embodiments of the present invention.
[0025] Figure 7 The first perspective view of the second housing of an electric wrench auxiliary device provided for some embodiments of the present invention.
[0026] Figure 8 This is a second perspective view of the second housing of an electric wrench auxiliary device provided for some embodiments of the present invention.
[0027] In the diagram: 1. Housing, 11. First housing, 111. Handle, 12. Second housing, 121. Gear lever, 2. Wrench connector, 21. Wrench connection part, 22. First rotating shaft part, 23. Insertion hole, 3. Rail bolt connector, 31. Second rotating shaft part, 32. Connection hole, 4. Transmission assembly, 41. First gear, 42. Second gear, 43. Third gear, 44. Fourth gear, 45. Fifth gear, 46. Sixth gear, 47. Intermediate transmission shaft. Detailed Implementation
[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] like Figures 1 to 8 As shown, an electric wrench auxiliary device according to the first aspect of the present invention includes a housing 1, a wrench connector 2, a rail bolt connector 3, and a transmission assembly 4. One end of the housing 1 is rotatably connected to the wrench connector 2, and the other end of the housing 1 is rotatably connected to the rail bolt connector 3. The wrench connector 2 and the rail bolt connector 3 are connected by the transmission assembly 4.
[0030] The technical effects achieved by the above embodiments are as follows: the wrench connector 2 enables a reliable connection between the electric wrench and the electric wrench auxiliary device; the rail bolt connector 3 enables a reliable connection between the electric wrench auxiliary device and the rail bolt; and the transmission component 4 enables the power to be transmitted to the rail bolt connector 3 when the electric wrench drives the wrench connector 2 to rotate, thereby reliably loosening or tightening the rail bolt. This achieves reliable torque transmission of the electric wrench, increases work efficiency, enables collaborative operation with other railway equipment such as rail transporters in complex environments, and increases the efficiency of rail maintenance work.
[0031] Optional, such as Figures 1 to 8 As shown, in some embodiments, the transmission assembly 4 includes a first gear 41, a second gear 42, a third gear 43, and a fourth gear 44. The first gear 41 is sleeved on the wrench connector 2, and the fourth gear 44 is sleeved on the rail bolt connector 3. The second gear 42 and the third gear 43 are rotatably connected to the housing 1. The second gear 42 meshes with the first gear 41, the third gear 43 meshes with the second gear 42, and the fourth gear 44 meshes with the third gear 43.
[0032] Optional, such as Figures 1 to 8 As shown, in some embodiments, the transmission assembly 4 further includes a fifth gear 45 and a sixth gear 46. The fifth gear 45 is provided on one side of the third gear 43, and the sixth gear 46 is provided on one side of the second gear 42. The fifth gear 45 and the sixth gear 46 mesh with each other.
[0033] Optional, such as Figures 1 to 8As shown, in some embodiments, the transmission assembly 4 further includes an intermediate transmission shaft 47, and the second gear 42 and the third gear 43 are each inserted with an intermediate transmission shaft 47, and each intermediate transmission shaft 47 is rotatably connected to the housing 1.
[0034] In the above optional embodiments, it should be noted that the housing 1 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are connected by bolts or snap-fits; the first gear 41, the second gear 42, the third gear 43 and the fourth gear 44 are all located inside the first housing 11, and the fifth gear 45 and the sixth gear 46 are both located inside the second housing 12.
[0035] The advantages of the above optional embodiments are as follows: reliable power transmission is achieved by setting the first gear 41, the second gear 42, the third gear 43 and the fourth gear 44, and the stability and reliability of power transmission are ensured by setting the fifth gear 45 and the sixth gear 46.
[0036] Optional, such as Figures 1 to 8 As shown, in some embodiments, the wrench connector 2 includes a wrench connecting part 21 and a first rotating shaft part 22. One end of the wrench connecting part 21 is connected to the first rotating shaft part 22, and a first gear 41 is sleeved on the first rotating shaft part 22. The first rotating shaft part 22 is rotatably connected to the housing 1.
[0037] In the above optional embodiments, it should be noted that the wrench connecting part 21 and the first rotating shaft part 22 are integrally formed, and the first rotating shaft part 22 and the housing 1 are rotatably connected by a bearing.
[0038] Optional, such as Figures 1 to 8 As shown, in some embodiments, the rail bolt connector 3 includes a second rotating shaft 31, on which a fourth gear 44 is sleeved. The second rotating shaft 31 is rotatably connected to the housing 1. A connecting hole 32 is provided on the second rotating shaft 31, and the connecting hole 32 is polygonal in shape.
[0039] Optional, such as Figures 1 to 8 As shown, in some embodiments, the wrench connector 21 is shaped like a polygonal prism.
[0040] Optional, such as Figures 1 to 8 As shown, in some embodiments, the wrench connector 21 has a socket 23.
[0041] In the above optional embodiments, it should be noted that the shape of the wrench connecting part 21 is a rectangle, square, regular pentagon, regular hexagon or other regular polygonal prism structure, specifically set according to the actual needs of the electric wrench; the shape of the connecting hole 32 is a rectangle, square, regular pentagon, regular hexagon or other regular polygonal shape.
[0042] The advantages of the above optional embodiments are as follows: the electric wrench is reliably mounted on the wrench connection part 21 by the setting of the wrench connection part 21, the first rotating shaft part 22 realizes the reliable rotation of the wrench connector 2 relative to the housing 1, the setting of the second rotating shaft part 31 realizes the reliable rotation of the rail bolt connector 3 relative to the housing 1, and the shape of the connecting hole 32 realizes the reliable connection between the rail bolt connector 3 and the rail bolt, thereby driving the rail bolt to be loosened or tightened smoothly.
[0043] Optional, such as Figures 1 to 8 As shown, in some embodiments, a handle 111 is also included, and a handle 111 is provided on one side of the housing 1.
[0044] In the above optional embodiments, it should be noted that the handle 111 is connected to the housing 11 by means of screwing, welding or snap-fitting.
[0045] The advantages of the above optional embodiments are: the handle 111 increases the ease of use of this electric wrench auxiliary device, ensuring the convenience for workers to loosen or tighten rail bolts.
[0046] Optional, such as Figures 1 to 8 As shown, in some embodiments, a lever 121 is also included, and the lever 121 is provided on the other side of the housing 1.
[0047] In the above optional embodiments, it should be noted that the gear lever 121 is connected to the housing 1 by means of screwing, welding or snap-fitting.
[0048] The advantages of the above optional embodiments are: by setting the stop lever 121, the electric wrench auxiliary device can be reliably and stably fixed on the rail, ensuring that the rail bolts can be quickly and accurately loosened or tightened.
[0049] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
[0050] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.
Claims
1. A power wrench assist device, comprising: It includes a housing (1), a wrench connector (2), a rail bolt connector (3), and a transmission assembly (4). One end of the housing (1) is rotatably connected to the wrench connector (2), and the other end of the housing (1) is rotatably connected to the rail bolt connector (3). The wrench connector (2) and the rail bolt connector (3) are connected through the transmission assembly (4).
2. An electrically powered hand tool auxiliary device according to claim 1, wherein The transmission assembly (4) includes a first gear (41), a second gear (42), a third gear (43), and a fourth gear (44). The first gear (41) is sleeved on the wrench connector (2), and the fourth gear (44) is sleeved on the rail bolt connector (3). The second gear (42) and the third gear (43) are rotatably connected to the housing (1). The second gear (42) meshes with the first gear (41), the third gear (43) meshes with the second gear (42), and the fourth gear (44) meshes with the third gear (43).
3. An electrically powered hand tool auxiliary device according to claim 2, wherein The transmission assembly (4) further includes a fifth gear (45) and a sixth gear (46). The fifth gear (45) is provided on one side of the third gear (43), and the sixth gear (46) is provided on one side of the second gear (42). The fifth gear (45) and the sixth gear (46) mesh with each other.
4. An electrically powered hand tool auxiliary device according to claim 3, wherein The transmission assembly (4) further includes an intermediate transmission shaft (47), and the second gear (42) and the third gear (43) are each inserted into an intermediate transmission shaft (47), and each intermediate transmission shaft (47) is rotatably connected to the housing (1).
5. The power wrench assist device of claim 2, wherein, The wrench connector (2) includes a wrench connecting part (21) and a first rotating shaft part (22). One end of the wrench connecting part (21) is connected to the first rotating shaft part (22). The first gear (41) is sleeved on the first rotating shaft part (22). The first rotating shaft part (22) is rotatably connected to the housing (1).
6. An electrically powered hand tool auxiliary device according to claim 2, wherein The rail bolt connector (3) includes a second rotating shaft (31), on which the fourth gear (44) is sleeved. The second rotating shaft (31) is rotatably connected to the housing (1). A connecting hole (32) is provided on the second rotating shaft (31), and the connecting hole (32) is polygonal in shape.
7. An electric wrench auxiliary device according to claim 1, characterized in that, It also includes a handle (111), which is provided on one side of the housing (1).
8. The power wrench assist device of claim 1, wherein, It also includes a gear lever (121), which is provided on the other side of the housing (1).
9. The power wrench assist device of claim 5, wherein, The wrench connector (21) is shaped like a polygonal prism.
10. The power wrench assist device of claim 5, wherein, The wrench connector (21) is provided with a socket (23).