Rail transit electricity testing card clamp

Abstract

The utility model discloses a rail transit electricity testing clamp, rail transit electricity testing clamp includes: holding part, clamp subassembly and solution locking assembly, clamp subassembly includes base, drive shaft, and the first clamp and the second clamp of symmetrical setting in the both sides of base, first clamp, the second clamp is through drive shaft with base rotatory connection to be used for clamping steel rail. Solution locking assembly has the locking state of making clamp subassembly clamping steel rail and keeping locking and the unlocking state of making clamp subassembly with steel rail disengaging, solution locking assembly can switch back and forth between the unlocking state and the locking state. The utility model technical scheme is convenient with the steel rail joint, avoids falling when with the steel rail joint, promotes operation safety and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rail transit safety equipment technology, and in particular to a rail transit voltage detection clip. Background Technology

[0002] In the maintenance of overhead contact lines in rail transit, the rail transit voltage detector clip is a key piece of equipment connecting the contact line and the rails. Current rail transit voltage detector clips typically rely on manual operation to keep the claws closed, lacking a reliable locking mechanism. This results in problems such as low operating efficiency, unstable closure, and a high risk of detachment, leading to insufficient safety and potentially causing accidents. Utility Model Content

[0003] This utility model provides a rail transit electrical testing clip that can be easily engaged with the rail, preventing it from falling off during engagement and improving operational safety and efficiency.

[0004] This utility model provides a rail transit electrical testing clip, which includes a gripping part, a clip assembly, and an unlocking / locking assembly. The clip assembly includes a base, a drive shaft, and a first clip and a second clip symmetrically arranged on both sides of the base. The first and second clips are rotatably connected to the base via the drive shaft for clamping rails. The unlocking / locking assembly has a locked state where the clip assembly clamps and holds the rail, and an unlocked state where the clip assembly disengages from the rail. The unlocking / locking assembly can switch back and forth between the unlocked and locked states.

[0005] This utility model's technical solution incorporates a clamping assembly and an unlocking / locking assembly. The first and second clamps are rotatably connected to the base via a drive shaft to clamp the rail. The unlocking / locking assembly has a locked state where the clamping assembly clamps and holds the rail, and an unlocked state where the clamping assembly disengages from the rail. The unlocking / locking assembly can switch back and forth between the unlocked and locked states, facilitating engagement with the rail and preventing it from falling off during engagement, thus improving operational safety and efficiency.

[0006] According to the foregoing embodiments of this utility model, the locking / unlocking assembly includes a movable bushing, a locking shaft, and a pressing part. The movable bushing is coaxially connected to the grip and the base. Pressing the grip can drive the movable bushing to slide along the axial direction of the base. A first elastic element is provided between the movable bushing and the base to provide a return elastic force for the movable bushing. A second elastic element is provided between the pressing part and the movable bushing to provide a return elastic force for the pressing part.

[0007] According to the aforementioned embodiment of this utility model, the base includes a mounting hole for mounting the locking shaft, and the movable bushing is provided with a locking hole that mates with the locking shaft. A push-button portion passes through the side wall of the movable bushing and is disposed corresponding to the locking hole, with at least a portion of the push-button portion protruding from the side wall of the movable bushing. A third elastic element, elastically connected to the locking shaft, is provided in the mounting hole for pushing the locking shaft into the locking hole. In the locked state, the locking shaft extends into the locking hole to restrict the movement of the movable bushing relative to the base, and the push-button portion abuts against one end of the locking shaft; pressing the push-button portion can push the locking shaft out of the locking hole to release the movement restriction of the movable bushing relative to the base, thereby switching the locking / unlocking assembly between the unlocked and locked states. This utility model's technical solution, by setting up a movable bushing and a locking shaft, allows the movable bushing to slide axially along the base when the grip is pressed. The locking shaft is located in the mounting hole of the base, and the movable bushing has a locking hole that mates with the locking shaft. The locking shaft can engage with the locking hole, forming a mechanical lock to restrict the movement of the movable bushing relative to the base. When the rail transit voltage detector clip is clamped onto the rail, that is, when switching from the unlocked state to the locked state, pressing down on the grip causes the movable bushing to move downward along the axial direction of the base, allowing the locking shaft to extend into the locking hole, thus restricting the movement of the movable bushing relative to the base and locking the movable bushing. This prevents the rail transit voltage detector clip from falling off the rail due to vibration or hand release, improving operational safety and efficiency. The push-button is provided in correspondence with the locking hole. When switching from the locked state to the unlocked state, pressing the push-button can push the locking shaft out of the locking hole to release the movement restriction of the movable bushing relative to the base, thereby unlocking the movable bushing. This makes it easy to switch the locking and unlocking components to the locked and unlocked states to clamp the rail or separate it from the rail.

[0008] According to the aforementioned embodiments of the present invention, both the first clip and the second clip include a rotating end and a clamping end located on opposite sides of the drive shaft. The drive shaft can drive the rotating end and the clamping end to rotate toward different sides, so that the rotating ends move away from each other and the clamping ends move closer to each other; or the rotating ends move closer to each other and the clamping ends move away from each other.

[0009] According to the aforementioned embodiments of this utility model, the movable bushing further includes an action block. The two opposite ends of the action block abut against the rotating end. When the movable bushing moves downward, it causes the action block to squeeze the two opposite rotating ends, thereby causing the drive shaft of the first clamp to rotate in the first direction and the drive shaft of the second clamp to rotate in the second direction. The two opposite rotating ends move away from each other and rotate outward, while the two opposite clamping ends move closer to each other and tighten inward to clamp the rail.

[0010] According to the aforementioned embodiments of this utility model, spring clips are respectively provided on the side of the clamping end that clamps the rail. This utility model's technical solution, by providing spring clips on the side of the clamping end that clamps the rail, can adaptively deform according to the curvature of the rail surface, generating clamping friction, improving friction and vibration resistance, and preventing the rail transit voltage detector clip from falling off.

[0011] According to any of the foregoing embodiments of this utility model, a torsion spring is provided between the drive shaft and the base. One end of the torsion spring abuts against the inner side of the first clip and the second clip, and the other end abuts against the base, so that the clamping ends of the first clip and the clamping ends of the second clip are separated from each other when in the unlocked state.

[0012] According to any of the foregoing embodiments of the present invention, the base includes a connecting part coaxially connected to the shaft of the movable bushing, the connecting part being located inside the shaft, and one end of the connecting part being provided with a mounting part for installing the first clip and the second clip.

[0013] According to the foregoing embodiments of this utility model, the axial direction of the locking shaft is perpendicular to the axial direction of the movable bushing.

[0014] According to the aforementioned embodiments of this utility model, the rail transit voltage detector clip also includes a conductive component that penetrates the interior of the rail transit voltage detector clip. One end of the conductive component is connected to the movable bushing, and the other end protrudes from the gripping part, enabling the movable bushing, the clip assembly, and the rail to conduct electricity. This utility model's technical solution hides the conductive component inside the rail transit voltage detector clip, avoiding the risk of exposed wear, and the wiring is neat and aesthetically pleasing, meeting the standardized design requirements of rail transit equipment.

[0015] This utility model's technical solution is simple and convenient to operate. When clamping the rail, simply press the gripping part vertically from top to bottom to clamp the clamp assembly to the rail. When disassembling the clamp, simply press the actuating part to disassemble the clamp assembly from the rail, improving operational efficiency. The gripping part, movable bushing, and base are coaxially arranged, resulting in a simple and compact structure. The pressing action is natural and convenient, allowing operators to complete the entire process of clamp closing, locking, unlocking, and disassembling with one hand. In the locked state, the locking shaft is located within the locking hole to lock the movable bushing, preventing the movable bushing from moving the clamp assembly and preventing the rail transit voltage detector clamp from falling off the rail. By concealing the conductive components inside the rail transit voltage detector clamp, the risk of exposed wear is avoided, and the overall wiring is neat and aesthetically pleasing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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 the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the rail transit voltage detector clip of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the rail transit voltage detector clip of this utility model;

[0019] Figure 3 This is a schematic diagram illustrating the installation and disassembly steps of an embodiment of the rail transit voltage detector clip of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of an embodiment of the rail transit voltage detector clip of this utility model in the unlocked state;

[0021] Figure 5 This is a cross-sectional structural diagram of an embodiment of the rail transit voltage detector clip of this utility model in the locked state;

[0022] Figure 6 This is a cross-sectional structural diagram of the card holder assembly in the unlocked state according to an embodiment of the rail transit voltage detector card holder of this utility model;

[0023] Figure 7 This is a cross-sectional structural diagram of the clamp assembly in the locked state according to an embodiment of the rail transit voltage detector clamp of this utility model;

[0024] Figure 8 This is a bottom view of the clip assembly of an embodiment of the rail transit voltage detector clip of this utility model;

[0025] Figure 9 This is a schematic diagram of the movable bushing in one embodiment of the rail transit voltage detector clip of this utility model;

[0026] Figure 10 This is a schematic diagram of the base structure in one embodiment of the rail transit voltage detector clip of this utility model;

[0027] Figure 11 This is a schematic diagram illustrating the switching from an unlocked state to a locked state in one embodiment of the rail transit voltage detector clip of this utility model;

[0028] Figure 12 This is a schematic diagram illustrating the switching from a locked state to an unlocked state in one embodiment of the rail transit voltage detector clip of this utility model;

[0029] Figure 13 This is a schematic diagram of another embodiment of the rail transit voltage detector clip of this utility model;

[0030] Figure 14 This is a schematic diagram of the conductive element in another embodiment of the rail transit voltage detector clip of this utility model.

[0031] Explanation of icon numbers:

[0032] Grip part - 100, clip assembly - 200, locking assembly - 300, conductive part - 400, housing - 500, rail - 600;

[0033] Rubber sleeve-110, base-210, first clip-220, second clip-230, first working surface-240, second working surface-250, movable bushing-310, locking shaft-320, first elastic element-330, second elastic element-340, third elastic element-350, push part-360;

[0034] Connecting part-211, mounting part-212, through hole-213, mounting hole-214, rotating end-221, drive shaft-222, clamping end-223, spring piece-224, torsion spring-225, locking hole-311, actuating block-312, shaft body-313;

[0035] Barrel hook -2231;

[0036] Axial direction of the movable bushing - X1, axial direction of the locking shaft - X2, first direction - X3, second direction - X4.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0041] This utility model provides a rail transit electrical testing clip that can be easily engaged with the rail, preventing it from falling off during engagement and improving operational safety and efficiency.

[0042] like Figures 1 to 7 As shown, this utility model embodiment provides a rail transit voltage detection card clip, which includes: a gripping part 100, a card clip assembly 200, and an unlocking and locking assembly 300.

[0043] like Figures 1 to 2 As shown, the gripping part 100 serves as the component for the operator to grip and drive the clamp assembly 200 to close. The clamp assembly 200 includes a base 210, a drive shaft 222, and a first clamp 220 and a second clamp 230 symmetrically arranged on both sides of the base 210. The first clamp 220 and the second clamp 230 are rotatably connected to the base 210 via the drive shaft 222 for clamping the rail 600. The locking / unlocking assembly 300 has a locked state in which the clamp assembly 200 clamps the rail 600 and remains locked, and an unlocked state in which the clamp assembly 200 disengages from the rail 600. The locking / unlocking assembly 300 can switch back and forth between the unlocked state and the locked state.

[0044] This utility model's technical solution involves setting up a clamping assembly 200 and an unlocking / locking assembly 300. The first clamp 220 and the second clamp 230 are rotatably connected to the base 210 via a drive shaft 222 to clamp the rail 600. The unlocking / locking assembly 300 has a locked state where the clamping assembly 200 clamps the rail 600 and keeps it locked, and an unlocked state where the clamping assembly 200 disengages from the rail 600. The unlocking / locking assembly 300 can switch back and forth between the unlocked and locked states, facilitating engagement with the rail and preventing it from falling off during engagement, thus improving operational safety and efficiency.

[0045] like Figures 4 to 5As shown, the locking / unlocking assembly 300 includes a movable sleeve 310, a locking shaft 320, and a push-button part 360. The movable sleeve 310 is coaxially connected to the grip part 100 and the base 210. Pressing the grip part 100 can drive the movable sleeve 310 to slide along the axial direction of the base 210. A first elastic element 330 is provided between the movable sleeve 310 and the base 210 to provide a return spring force for the movable sleeve 310. A second elastic element 340 is provided between the push-button part 360 and the movable sleeve 310 to provide a return spring force for the push-button part.

[0046] like Figures 4 to 5 As shown, the base 210 includes a mounting hole 214 for mounting the locking shaft 320, and the movable bushing 310 is provided with a locking hole 311 that mates with the locking shaft 320. A push-button part 360 passes through the side wall of the movable bushing 310 and is positioned corresponding to the locking hole 311. At least a portion of the push-button part 360 protrudes from the side wall of the movable bushing 310 for easy operation by the operator. A third elastic element 350, elastically connected to the locking shaft 320, is provided within the mounting hole 214 to push the locking shaft 320 into the locking hole 311.

[0047] Specifically, the first elastic element 330, the second elastic element 340, and the third elastic element 350 are all return springs.

[0048] like Figure 3 As shown, in the locked state, the locking shaft 320 extends into the locking hole 311 to restrict the movement of the movable sleeve 310 relative to the base 210, and the push part 360 abuts against one end of the locking shaft 320. Pressing the push part 360 can push the locking shaft 320 out of the locking hole 311 to release the movement restriction of the movable sleeve 310 relative to the base 210, thereby switching the unlocking and locking assembly 300 between the unlocked and locked states.

[0049] The present invention provides a movable bushing 310 and a locking shaft 320. Pressing the gripping part 100 can drive the movable bushing 310 to slide along the axial direction of the base 210. The locking shaft 320 is disposed in the mounting hole 214 of the base 210. The movable bushing 310 is provided with a locking hole 311 that cooperates with the locking shaft 320. The locking shaft 320 can be inserted into the locking hole 311 to form a mechanical lock to restrict the movement of the movable bushing 310 relative to the base 210. When the rail transit voltage detector clip is clamped onto the rail 600, that is, when switching from the unlocked state to the locked state, pressing down on the gripping part 100 causes the movable sleeve 310 to move downward along the axial direction of the base, allowing the locking shaft 320 to extend into the locking hole 311. This restricts the movement of the movable sleeve 310 relative to the base 210, thereby locking the movable sleeve 310 and preventing the rail transit voltage detector clip from falling off the rail 600 due to vibration or hand release, thus improving operational safety and efficiency. The push part 360 is correspondingly provided with the locking hole 311. When switching from the locked state to the unlocked state, pressing the push part 360 can push the locking shaft 320 out of the locking hole 311, thereby releasing the movement restriction of the movable sleeve 310 relative to the base 210, thus unlocking the movable sleeve 310. This facilitates switching the locking / unlocking assembly 300 between the locked and unlocked states to clamp or separate from the rail 600.

[0050] When the operator presses the gripping part 100, the movable bushing 310 moves downwards, compressing the first elastic element 330. When the first clip 220 and the second clip 230 clamp the rail 600, the locking shaft 320 moves into the locking hole 311 of the movable bushing 310. Under the elastic action of the third elastic element 350, the locking shaft 320 is pushed into the locking hole 311, locking the movable bushing 310 and thus locking the positions of the first clip 220 and the second clip 230, preventing the rail transit voltage detector clip from falling off the rail 600 due to external force. When unlocking is required, the pressing part 360 is pressed. The pressing part 360 simultaneously acts on the locking shaft 320, pushing it out of the locking hole 311. In the locked state, the first elastic element 330 compresses to generate elastic force. Under the elastic action of the first elastic element 330, the movable bushing 310 can move upward and push out. At this time, the actuating block 313 releases the pressure on the rotating end 221, and the first clip 220 and the second clip 230 automatically open, and the locking / unlocking assembly 300 is in the unlocked state. At the same time, the pressing part 360 automatically resets under the elastic action of the second elastic element 340.

[0051] Specifically, the gripping part 100 and the movable bushing 310 are fixedly connected by means of thread, injection molding, bonding or embedding, etc. The movable bushing 310 is coaxially arranged with the base 210 and can slide up and down along the outer wall of the base 210.

[0052] like Figure 1 As shown, the rail transit voltage detection card clip also includes a housing 500. The housing 500 is disposed outside the movable bushing 310 and connected to the movable bushing 310. The housing 500 can move up and down with the movable bushing 310. The housing 500 can protect the internal parts and enhance the overall aesthetics and durability.

[0053] Furthermore, the top of the 360-degree push button can be provided with anti-slip texture or protrusions to facilitate one-handed operation by the operator.

[0054] like Figures 4 to 5 As shown, the axial direction X2 of the locking shaft 320 is perpendicular to the axial direction X1 of the movable sleeve 310, and the locking hole 311 is also laterally disposed on the side wall of the movable sleeve 310. By setting the locking shaft 320 perpendicular to the movable sleeve 310, the locking shaft 320 can laterally lock the up-and-down movement of the movable sleeve 310 when the movable sleeve 310 moves up and down, preventing the movable sleeve 310 from moving and causing the rail transit voltage detector clip to fall off.

[0055] like Figures 6 to 7 As shown, the first clip 220 and the second clip 230 each include a rotating end 221 and a clamping end 223 located on opposite sides of the drive shaft 222. The drive shaft 222 can drive the rotating end 221 and the clamping end 223 to rotate toward different sides, so that the rotating end 221 moves away from each other and the clamping end 223 moves closer to each other; and / or the rotating end 221 moves closer to each other and the clamping end 223 moves away from each other.

[0056] like Figure 9 As shown, the movable bushing 310 also includes a shaft body 314 and an actuating block 313 disposed at one end of the shaft body 314. The two ends of the actuating block 313 abut against the rotating end 221 respectively, and the actuating block 313 has an inclined guide surface to facilitate pushing the first clamp 220 and the second clamp 230.

[0057] like Figures 11 to 12 As shown, when the movable bushing 310 moves downward, it drives the actuating block 313 to press against the two opposing rotating ends 221, thereby causing the drive shaft 222 of the first clamp 220 to rotate along the first direction X3 and the drive shaft 222 of the second clamp 230 to rotate along the second direction X4. The two opposing rotating ends 221 move away from each other and rotate outward, while the two opposing clamping ends 223 move closer to each other and tighten inward to clamp the rail 600. It should be noted that the first direction X3 is counterclockwise and the second direction X4 is clockwise. When the movable bushing 310 moves downward, the first clamp 220 rotates counterclockwise and the second clamp 230 rotates clockwise. In other embodiments, clamps with other rotation directions can also be set according to actual conditions to achieve the effect of clamping the rail 600. This application does not limit this.

[0058] The present invention can drive the movable bushing 310 to move downward by pressing the gripping part 100, and the rotating end 221 is squeezed by the action block 313, which drives the clamping end 223 to tighten and clamp the rail 600, simplifying the operation steps and improving the operation efficiency.

[0059] like Figure 10 As shown, the base 210 includes a connecting portion 211 coaxially connected to the shaft body 314 of the movable bushing 310, and the connecting portion 211 is located inside the shaft body 314. One end of the connecting portion 211 is also provided with a mounting portion 212, which is used to install the first clip 220 and the second clip 230. The mounting portion 212 also has a through hole 213 for installing the drive shaft 222. The drive shaft 222 is fixed by interference fit or riveting locking to ensure stability during long-term use.

[0060] Furthermore, the installation part 212 is also provided with a groove that matches the rail surface of the rail 600, so as to realize the self-guiding positioning of the clamp assembly 200, improve the positioning accuracy and prevent the first clamp 220 and the second clamp 230 from being misaligned.

[0061] like Figures 6 to 7 As shown, the bottom end of the clamping end 223 is also provided with a barb 2231, which is used to fasten to the rail 600 when clamping the rail 600, so as to prevent the rail transit electrical tester clip from falling off the rail 600.

[0062] like Figures 6 to 7 As shown, spring pieces 224 are provided on one side of the clamping end 223 that clamps the rail 600, with each spring piece 224 protruding outward by 2-3 mm. This utility model's technical solution, by providing spring pieces 224 on one side of the clamping end 223 that clamp the rail 600, allows for adaptive deformation according to the curvature of the rail 600 surface, generating clamping friction, improving friction and vibration resistance, and making the clamping end 223 clamp the rail 600 more tightly, preventing the rail transit voltage detector clip from falling off. Specifically, the spring piece 224 is a spring steel spring piece 224.

[0063] Furthermore, anti-slip textures can also be provided on the surface of the spring piece 224 to further improve its anti-slip capability.

[0064] like Figure 8 As shown, a torsion spring 225 is provided between the drive shaft 222 and the base 210. The torsion spring 225 is located on the outer periphery of the drive shaft 222. One end of the torsion spring 225 abuts against the inner side of the first clamp 220 and the second clamp 230, and the other end abuts against the mounting part 212, so that the clamping ends 223 of the first clamp 220 and the second clamp 230 are separated from each other when in the unlocked state. Preferably, the torsion spring 225 is a normally open torsion spring, so that the first clamp 220 and the second clamp 230 are in a normally open state when not under force, which facilitates the operator to install the rail transit voltage detector clamp on the rail surface of the 600 rail.

[0065] like Figure 11 As shown, when the first clip 220 and the second clip 230 are in the normally open state, that is, when the locking / unlocking assembly 300 is in the unlocked state, a first working surface 240 is formed between the rotating end 221 of the first clip 220 and the rotating end 221 of the second clip 230, and the first working surface is V-shaped; a second working surface 250 is formed between the clamping end 223 of the first clip 220 and the clamping end 223 of the second clip 230, and the second working surface 250 is V-shaped.

[0066] like Figures 13 to 14 As shown, the rail transit voltage detector clip also includes a conductive element 400 that penetrates the interior of the clip. One end of the conductive element 400 is connected to the movable bushing 310, and the other end protrudes from the gripping part 100. When the clip assembly 200 closes and clamps the rail 600, it is electrically connected to the rail 600 through the movable bushing 310, base 210, first clip 220, and second clip 230. The voltage detection signal is transmitted to the voltage detection rod through the wire, realizing the voltage detection function. This utility model's technical solution hides the conductive element 400 inside the rail transit voltage detector clip, avoiding the risk of exposed wear, and the wiring is neat and aesthetically pleasing, meeting the standardized design requirements of rail transit equipment.

[0067] like Figure 14 As shown, the end of the grip 100 is fitted with an insulating rubber sleeve 110, which facilitates the operator's grip and effectively prevents electric shock, meeting the safety regulations for high-voltage environments. The tail of the rubber sleeve 110 has a conductive element 400 outlet.

[0068] The following describes the specific workflow of the rail transit voltage testing clip.

[0069] like Figure 3 as well as Figure 11 As shown, in the unlocked state, the first clip 220 and the second clip 230 are open under the action of the torsion spring 225. When it is necessary to clamp the rail 600, the clips are aligned with the rail surface of the rail 600. Press the gripping part 100 vertically (that is, press the gripping part 100 along the axial direction X1 of the movable bushing 310), the movable bushing 310 drives the actuating block 313 to move down, squeezing the rotating end 221 of the first clip 220 and the rotating end 221 of the second clip 230, thereby driving the clamping end 223 of the first clip 220 and the clamping end 223 of the second clip 230 to rotate and retract inward to clamp the rail 600. At the same time, the locking shaft 320 slides into the locking hole 311 to lock the movement of the movable bushing 310.

[0070] Such as 3 and Figure 12As shown, after the voltage test is completed, press the push part 360 protruding from the side of the movable bushing 310. The push part 360 pushes the locking shaft 320 to disengage from the locking hole 311. The movable bushing 310 resets under the elastic action of the first elastic member 330, which drives the clamp assembly 200 to reset. The first clamp 220 and the second clamp 230 automatically open.

[0071] This utility model's technical solution is simple and convenient to operate. When clamping the rail 600, simply press the gripping part 100 vertically from top to bottom to clamp the clamping assembly 200 to the rail 600. When disassembling the clamp, simply press the actuating part 360 to disassemble the clamping assembly 200 from the rail 600, which improves operational efficiency. The gripping part 100, the movable bushing 310, and the base 210 are arranged coaxially, resulting in a simple and compact structure. The pressing action is natural and convenient, allowing operators to complete the entire process of clamp closing, locking, unlocking, and disassembly with one hand. In the locked state, the locking shaft 320 is located within the locking hole 311 to lock the movable bushing 310, preventing the movable bushing 310 from moving the clamping assembly 200 and preventing the rail transit voltage detector clamp from falling off the rail 600. By hiding the conductive component 400 inside the rail transit voltage detector clamp, the risk of exposed wear is avoided, and the overall wiring is neat and aesthetically pleasing.

[0072] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A rail transit voltage detection clip, characterized in that, The rail transit electrical testing clip includes: Holding part; A clamping assembly includes a base, a drive shaft, and a first clamp and a second clamp symmetrically arranged on both sides of the base. The first clamp and the second clamp are rotatably connected to the base via the drive shaft for clamping a steel rail. The locking / unlocking assembly has a locked state in which the clamping assembly clamps and holds the rail in a locked position, and an unlocked state in which the clamping assembly disengages from the rail. The locking / unlocking assembly can switch back and forth between the unlocked state and the locked state.

2. The rail transit voltage detection clip as described in claim 1, characterized in that, The locking / unlocking assembly includes a movable sleeve, a locking shaft, and a push-button part. The movable sleeve is coaxially connected to the grip and the base. Pressing the grip can cause the movable sleeve to slide along the axial direction of the base. A first elastic element is provided between the movable bushing and the base to provide a restoring elastic force for the movable bushing; A second elastic element is provided between the push part and the movable bushing to provide the push part with a restoring elastic force.

3. The rail transit voltage detection clip as described in claim 2, characterized in that, The base includes a mounting hole for mounting the locking shaft, the movable bushing has a locking hole that mates with the locking shaft, the push-button portion passes through the side wall of the movable bushing and is provided corresponding to the locking hole, and at least a portion of the push-button portion protrudes from the side wall of the movable bushing. The mounting hole is provided with a third elastic element that is elastically connected to the locking shaft, which is used to push the locking shaft into the locking hole. In the locked state, the locking shaft extends into the locking hole to restrict the movement of the movable bushing relative to the base, and the push part abuts against one end of the locking shaft; Pressing the pusher can push the locking shaft out of the locking hole to release the movement restriction of the movable bushing relative to the base, thereby switching the unlocking and locking assembly between the unlocked state and the locked state.

4. The rail transit voltage detection clip as described in claim 2, characterized in that, Both the first and second clips include a rotating end and a clamping end located on opposite sides of the drive shaft. The drive shaft can drive the rotating end and the clamping end to rotate towards different sides, causing the rotating ends to move away from each other and the clamping ends to move closer to each other; or The rotating ends are close to each other, while the clamping ends are far apart.

5. The rail transit electrical testing clip as described in claim 4, characterized in that, The movable bushing also includes an action block, the two opposite ends of which abut against the rotating end. When the movable bushing moves downward, the action block squeezes the two opposite rotating ends, thereby driving the drive shaft of the first clamp to rotate in a first direction and driving the drive shaft of the second clamp to rotate in a second direction. The two opposite rotating ends move away from each other and rotate outward, while the two opposite clamping ends move closer to each other and tighten inward to clamp the rail.

6. The rail transit voltage detection clip as described in claim 4, characterized in that, The clamping end is equipped with spring clips on one side of the rail.

7. The rail transit voltage detection clip as described in any one of claims 4 to 6, characterized in that, A torsion spring is provided between the drive shaft and the base. One end of the torsion spring abuts against the inner side of the first clip and the second clip, and the other end abuts against the base, so that the clamping ends of the first clip and the clamping ends of the second clip are separated from each other when the unlocked state is reached.

8. The rail transit voltage detection clip as described in any one of claims 4 to 6, characterized in that, The base includes a connecting part coaxially connected to the shaft of the movable bushing. The connecting part is located inside the shaft. One end of the connecting part is also provided with a mounting part for installing the first clip and the second clip.

9. The rail transit electrical testing card clip as described in any one of claims 2 to 3, characterized in that, The axial direction of the locking shaft is perpendicular to the axial direction of the movable bushing.

10. The rail transit voltage detection clip as described in claim 2, characterized in that, The rail transit voltage detector clip also includes a conductive component that passes through the interior of the rail transit voltage detector clip. One end of the conductive component is connected to the movable bushing, and the other end protrudes from the gripping part, so that the movable bushing, the clip assembly and the rail are in communication.

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