Six-in-one multi-functional crank handle for overhead contact lines

By designing a six-in-one multi-functional crank handle for overhead contact lines, integrating multiple tool functions, the risk of mis-taking caused by differences in the specifications of crank handles and keys from different brands of equipment was resolved. This improved the effectiveness of maintenance and emergency response, increased the efficiency of tool retrieval in emergency fault scenarios, and ensured the power supply safety of the lines.

CN224437488UActive Publication Date: 2026-06-30SUZHOU RAIL TRANSIT OPERATION CO LTD OPERATION BRANCH NO 1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU RAIL TRANSIT OPERATION CO LTD OPERATION BRANCH NO 1
Filing Date
2025-07-04
Publication Date
2026-06-30

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Abstract

This utility model relates to the field of multifunctional crank handle technology, specifically a six-in-one multifunctional crank handle for overhead contact lines. It includes a main body, a first rod, and a second rod. The main body includes a rotating component, with connecting components at both ends. The connecting components have mounting grooves, in which the first and second rods are installed, and an internal groove is formed. A pin is placed within the internal groove. Limiting grooves are formed on the first and second rods. By integrating this multifunctional universal crank handle, maintenance personnel only need to identify a single tool, avoiding human error and completely eliminating the risk of delays in overhead contact line maintenance and power supply failures caused by mismatched crank handles or keys. This significantly improves the operational accuracy of overhead contact line maintenance and emergency response, building a more reliable protective barrier for power supply safety.
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Description

Technical Field

[0001] This utility model relates to the field of multifunctional crank handle technology, specifically a six-in-one multifunctional crank handle for overhead contact lines. Background Technology

[0002] In the overhead contact system of rail transit, disconnecting switches and visual grounding devices are introduced from multiple brands. Due to the differences in the specifications of the crank handles and keys that come with each brand of equipment, there is a risk of mistakenly picking the wrong crank handle during routine maintenance and emergency fault handling. This risk not only affects the efficiency of maintenance and fault handling, but in severe cases, it may even affect the power supply to the overhead contact system, thereby posing a significant threat to the stable operation of the entire line. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems existing in the current multi-functional crank handle, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a six-in-one multi-functional crank handle for overhead contact lines. By integrating the multi-functional universal crank handle, maintenance personnel only need to identify a single tool, avoiding human error and completely eliminating the risk of delays in overhead contact line maintenance and power supply failures caused by mismatched crank handles or keys. This significantly improves the operational accuracy of overhead contact line professionals in maintenance and emergency response, and builds a more reliable protective barrier for line power supply safety.

[0006] Maintenance personnel no longer need to spend time identifying the cranks and keys corresponding to different brands of equipment; they can use them directly. The time spent preparing cranks and keys each time can be reduced by 80%. Especially in emergency scenarios, the quick and accurate use of tools can shorten the time for handling faults. It also avoids the need for personnel to make two trips to retrieve the wrong cranks and keys, which would affect the efficiency of on-site maintenance and fault handling, thus providing a solid guarantee for the power supply safety of Suzhou Rail Transit.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] The overhead contact line six-in-one multi-functional crank includes a main body, a first rod, and a second rod;

[0009] The main body includes a rotating component, with connecting components at both ends of the rotating component. The connecting components have mounting grooves, in which a first rod and a second rod are installed, and an internal groove is provided. A pin is provided in the internal groove, and limit grooves are provided on the first rod and the second rod.

[0010] As a preferred embodiment of the six-in-one multi-functional crank handle for contact wire described in this utility model, wherein: the rotating component is provided with a rotating shaft at both ends, and the other end of the rotating shaft is rotatably connected to the connecting component.

[0011] As a preferred embodiment of the six-in-one multi-functional crank handle for contact wire described in this utility model, an inner triangular key one and an inner triangular key two are provided on the outer sides of the two connecting parts.

[0012] As a preferred embodiment of the six-in-one multi-functional crank handle for contact wire described in this utility model, wherein: a round key and a four-corner key are respectively provided at both ends of the first rod.

[0013] As a preferred embodiment of the six-in-one multi-functional crank handle for contact wire described in this utility model, wherein: the two ends of the second rod are respectively provided with an external triangular key and an external hexagonal key.

[0014] As a preferred embodiment of the six-in-one multi-functional crank handle for contact wire described in this utility model, wherein: a locking bolt is connected to the connecting member, the locking bolt is screwed to the connecting member, and the bottom of the locking bolt passes through the connecting member and contacts the first rod and the second rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. By integrating a multi-functional universal crank handle, maintenance personnel only need to identify a single tool, avoiding human misjudgment, completely eliminating the risk of delays in contact network maintenance and power supply failure caused by mismatched crank handles and keys, significantly improving the operational accuracy of contact network professionals in maintenance and emergency response, and building a more reliable protective barrier for line power supply safety.

[0016] 2. Maintenance personnel no longer need to spend time identifying the cranks and keys corresponding to different brands of equipment; they can use them directly. The time spent preparing cranks and keys each time can be reduced by 80%. Especially in emergency fault scenarios, the quick and accurate use of tools can shorten the fault handling time. It also avoids the need for personnel to make two trips to retrieve the wrong cranks and keys, which would affect the efficiency of on-site maintenance and fault handling, thus providing a solid guarantee for the power supply safety of Suzhou Rail Transit. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the main structure of the present utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the first rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the second rod of this utility model.

[0022] In the diagram: 100 Main body, 110 Rotating part, 120 Connecting part, 121 Inner triangular key one, 122 Inner triangular key two, 130 Mounting slot, 140 Built-in slot, 150 Pin block, 160 Rotating shaft, 170 Locking bolt, 200 First rod body, 210 Second rod body, 220 Limiting slot, 230 Round key, 240 Four-corner key, 250 Outer triangular key, 260 Outer hexagonal key. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] This utility model provides the following technical solution: a six-in-one multi-functional crank handle for overhead contact lines. During use, by integrating the multi-functional universal crank handle, maintenance personnel only need to identify a single tool, avoiding human error and completely eliminating the risk of delays in overhead contact line maintenance and power supply failures caused by mismatched crank handles or keys. This significantly improves the operational accuracy of overhead contact line professionals in maintenance and emergency response, and builds a more reliable protective barrier for the safety of power supply lines.

[0028] Maintenance personnel no longer need to spend time identifying the cranks and keys corresponding to different brands of equipment; they can use them directly. The time spent preparing cranks and keys each time can be reduced by 80%. Especially in emergency scenarios, the quick and accurate use of tools can shorten the time for handling faults. It also avoids the need for personnel to make two trips to retrieve the wrong cranks and keys, which would affect the efficiency of on-site maintenance and fault handling, thus providing a solid guarantee for the power supply safety of Suzhou Rail Transit.

[0029] Figures 1-4 The diagram shown is a structural schematic of the first embodiment of the six-in-one multi-functional crank handle for overhead contact lines of this utility model. Please refer to [link / reference]. Figures 1-4 The six-in-one multi-functional crank handle for the overhead contact line in this embodiment includes a main body 100, a first rod 200 and a second rod 210.

[0030] The main body 100 includes a rotating component 110, with connecting components 120 connected to both ends of the rotating component 110. The connecting component 120 has an installation groove 140, in which a first rod 200 and a second rod 210 are installed and an internal groove is provided. A pin block 150 is provided in the internal groove. Limiting grooves 220 are provided on the first rod 200 and the second rod 210.

[0031] The rotating part 110 is provided with a rotating shaft 160 at both ends, and the other end of the rotating shaft 160 is rotatably connected to the connecting part 120. The outer sides of the two connecting parts 120 are provided with an inner triangular key 121 and an inner triangular key 122. The two ends of the first rod 200 are respectively provided with a round key 230 and a square key 240. The two ends of the second rod 210 are respectively provided with an outer triangular key 250 and an outer hexagonal key 260. A locking bolt 170 is connected to the connecting part 120. The locking bolt 170 is screwed to the connecting part 120, and the bottom of the locking bolt 170 passes through the connecting part 120 and contacts the first rod 200 and the second rod 210.

[0032] The main body 100 is used to connect the first rod 200 and the second rod 210, and is specifically composed of a rotating part 110 and a connecting part 120. The rotating part 110 is used to realize the rotation function of the two connecting parts 120, so as to facilitate the folding of the main body 100 and thus facilitate storage. The outer sides of the two connecting parts 120 are used to support the inner triangular key 121 and the inner triangular key 22, and have a mounting groove 140. The mounting groove 140 is used to support the sliding of the first rod 200 and the second rod 210, and has an inner groove for supporting the pin block 150. The rotating shaft 160 is used to connect the rotating part 110 and the connecting part 120, and the locking bolt 170 is used to fix the first rod 200 and the second rod 210.

[0033] Both the first rod 200 and the second rod 210 have limiting grooves 220. The limiting grooves 220 are used to cooperate with the pin block 150 to prevent the first rod 200 and the second rod 210 from sliding out of the connector 120. The first rod 200 is used to carry the round key 230 and the four-corner key 240, and the second rod 210 is used to carry the outer triangular key 250 and the outer hexagonal key 260.

[0034] By integrating a multi-functional universal crank handle, maintenance personnel only need to identify a single tool, avoiding human error and completely eliminating the risk of delays in overhead contact line maintenance and power supply failures caused by mismatched crank handles or keys. This significantly improves the operational accuracy of overhead contact line maintenance and emergency response, and builds a more reliable protective barrier for line power supply safety.

[0035] Maintenance personnel no longer need to spend time identifying the cranks and keys corresponding to different brands of equipment; they can use them directly. The time spent preparing cranks and keys each time can be reduced by 80%. Especially in emergency scenarios, the quick and accurate use of tools can shorten the time for handling faults. It also avoids the need for personnel to make two trips to retrieve the wrong cranks and keys, which would affect the efficiency of on-site maintenance and fault handling, thus providing a solid guarantee for the power supply safety of Suzhou Rail Transit.

[0036] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A six-in-one multi-functional crank handle for overhead contact lines, characterized in that: It includes a main body (100), a first rod (200), and a second rod (210); The main body (100) includes a rotating component (110), with connecting components (120) connected to both ends of the rotating component (110). The connecting component (120) has an installation groove (130), in which a first rod (200) and a second rod (210) are installed, and an internal groove (140) is provided. A pin block (150) is provided in the internal groove (140), and a limit groove (220) is provided on the first rod (200) and the second rod (210).

2. The contact wire six-in-one multi-functional crank handle according to claim 1, characterized in that: The rotating component (110) has a rotating shaft (160) at both ends, and the other end of the rotating shaft (160) is rotatably connected to the connecting component (120).

3. The six-in-one multi-functional crank handle for overhead contact lines according to claim 1, characterized in that: The outer sides of the two connectors (120) are provided with an inner triangular key one (121) and an inner triangular key two (122).

4. The six-in-one multi-functional crank handle for overhead contact lines according to claim 1, characterized in that: The first rod (200) has a round key (230) and a four-corner key (240) at its two ends respectively.

5. The six-in-one multi-functional crank handle for overhead contact lines according to claim 1, characterized in that: The two ends of the second rod (210) are respectively provided with an external triangular key (250) and an external hexagonal key (260).

6. The six-in-one multi-functional crank handle for overhead contact lines according to claim 1, characterized in that: A locking bolt (170) is connected to the connector (120). The locking bolt (170) is screwed to the connector (120), and the bottom of the locking bolt (170) passes through the connector (120) and contacts the first rod (200) and the second rod (210).