Rail testing clamp

Abstract

The application discloses a rail electrification detection clamp, which comprises a shell assembly, a clamping jaw assembly and a locking assembly. The clamping jaw assembly comprises two clamping pieces and a first elastic piece. The two clamping pieces are respectively rotatably installed on the shell assembly and have a clamping state and an open state. The first elastic piece is installed between the two clamping pieces. The locking assembly is installed on the shell assembly. The locking assembly comprises a locking piece and an operating piece. The locking piece is movably arranged along an axial direction. The operating piece is configured to control the locking piece to switch between a locking position and an unlocking position through axial movement. When the locking piece is in the locking position, the locking piece abuts against the two clamping pieces, so that the two clamping pieces are stretched through the two clamping pieces, and the two clamping pieces are in the clamping state. When the locking piece is in the unlocking position, the locking piece avoids the two clamping pieces, so that the two clamping pieces are in the open state under the action of the first elastic piece. The technical scheme improves the operation efficiency of the rail electrification detection clamp.

Description

Technical Field

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

[0002] Currently, before grounding and maintenance of the overhead contact system in rail transit, a voltage testing operation is required to ensure the safety of maintenance personnel. Rail voltage testing clamps are essential equipment for this operation; the most common type on the market is the screw-type clamp.

[0003] Screw-type clamps rely mainly on the preload of the screw to clamp onto the rail. Each installation or disassembly requires continuous rotation of the screw to clamp or loosen the rail. The threads on the screw are prone to wear and jamming. In harsh environments, their service life is short, and they suffer from problems such as low operating efficiency, unstable closure, and high risk of falling off. They are also not safe enough and may cause accidents. Utility Model Content

[0004] The main purpose of this application is to provide a rail voltage detector clamp, which aims to improve the problem that existing rail voltage detector clamps require constant rotation of the screw to clamp or loosen the rail each time they are installed or removed, resulting in low operating efficiency.

[0005] To achieve the above objectives, this application proposes a rail voltage detector clip, which includes a housing assembly, a claw assembly, and a locking assembly; wherein, The claw assembly includes two clamping members and a first elastic member. The two clamping members are rotatably mounted on opposite sides of the housing assembly and have a clamping state for clamping the rail and an opening state for releasing the rail. The first elastic member is installed between the two clamping members. The locking assembly is mounted on the housing assembly. The locking assembly includes a locking member and an operating member. The locking member is movably disposed along its axial direction. The operating member is configured to control the locking member to switch between a locked position and an unlocked position when it moves along the axial direction. When the locking member is in the locked position, it abuts against the two clamping members respectively, so that the first elastic member is stretched by the two clamping members, and the two clamping members are in the hugging state. When the locking member is in the unlocked position, it avoids the two clamping members, so that the two clamping members are in the open state under the force of the first elastic member.

[0006] In some embodiments of this application, both clamping members are provided with an abutment portion, a connecting portion and a clamping portion in sequence, the two connecting portions are rotatably mounted on opposite sides of the housing assembly, and the first elastic member is connected between the two abutment portions; When the locking member is in the locked position, it abuts against the abutting portions of the two clamping members respectively, so as to stretch the first elastic member and make the two clamping members in the hugging state. When the locking member is in the unlocked position, it avoids the abutting portion of the two clamping members, and the contraction force of the first elastic member causes the two clamping portions to be in the open state.

[0007] In some embodiments of this application, the locking assembly includes a sleeve, an intermittent member, and a second elastic member. The sleeve is fixedly installed on the housing assembly. The sleeve has a channel extending through it along the axial direction. The inner wall of the channel has a groove. The end of the sleeve facing the locking member also has a guide portion. The intermittent member is disposed at the end of the locking member facing the operating member. The periphery of the intermittent member also has a limiting portion. The second elastic member is disposed at the end of the locking member away from the intermittent member. The operating member has a driving part at one end facing the intermittent member. The driving part is used to drive the intermittent member to rotate intermittently together with the guide part when the operating member passes through the channel, so that the limiting part abuts against the guide part, restricts the locking member to the locked position, and compresses the second elastic member, or, so that the limiting part is aligned with the slide groove, so that under the elastic drive of the second elastic member, the intermittent member is driven by the locking member to be accommodated in the channel, and the locking member moves to the unlocked position.

[0008] In some embodiments of this application, the driving part includes a plurality of first conical teeth spaced apart, and the intermittent member has a plurality of second conical teeth spaced apart on the side facing the driving part, which are adapted to the plurality of first conical teeth. The first conical teeth are used to work together with the guide part to act on the second conical teeth to drive the intermittent member to rotate intermittently.

[0009] In some embodiments of this application, the guide portion includes first guide teeth and second guide teeth that are alternately distributed along the circumference of the sleeve. The number of first guide teeth corresponds one-to-one with the number of slide grooves, and the root of each first guide tooth is provided with a corresponding groove opening of the slide groove.

[0010] In some embodiments of this application, both the limiting part and the slide groove extend along the axial direction, and when the locking member drives the intermittent member to be accommodated in the channel, the limiting part and the slide groove slide together.

[0011] In some embodiments of this application, the intermittent element is sleeved on the end of the locking element facing the operating element, and rotates relative to the locking element when the driving part drives the intermittent rotation.

[0012] In some embodiments of this application, the rail voltage tester clip includes a handle assembly, and the operating element is also floatingly mounted on the housing assembly via the handle assembly.

[0013] In some embodiments of this application, the housing assembly includes a third elastic element, the handle assembly is movably mounted on the housing assembly along the axial direction, the handle assembly is fixedly connected to the operating element, and the third elastic element is elastically mounted between the handle assembly and the housing assembly.

[0014] In some embodiments of this application, the clamping member is further provided with a bent portion on the side of the abutment portion away from the connecting portion. The bent portion of each clamping member is inclined toward the side away from the other clamping member. The locking member is provided with a spherical locking portion. When the locking member moves from the unlocked position to the locked position, the locking portion slides and engages with the bent portions of the two clamping members respectively, so as to slide into the gap between the abutment portions of the two clamping members and abut against the abutment portions.

[0015] In some embodiments of this application, the operating member is provided with a clearance hole along the axial direction, the locking member is provided with a mounting hole through the axial direction, the housing assembly includes a fixedly provided mounting post, the axis of the mounting post coincides with the axial direction of the locking member, the mounting post passes through the mounting hole and is at least partially accommodated in the clearance hole.

[0016] The rail voltage detector clip provided in this embodiment, through the above-described structural design, allows for easy installation. When the clip is placed on the rail, the operator simply drives the operating component axially to quickly switch the locking component to the locked position. Under the action of the locking component, the two clamping components rapidly compress or stretch the first elastic element, thus quickly clamping the rail. When the clip needs to be disassembled, the operator simply drives the operating component axially to quickly switch the locking component to the unlocked position, avoiding the two clamping components. The two clamping components then quickly open under the force of the first elastic element, releasing the rail. The operator can disassemble or install the voltage detector clip with only one hand. When the locking component is switched to the locked position, it abuts against the two clamping components, effectively preventing them from returning to the open state, thus effectively locking them in a clamped state and preventing the rail voltage detector clip from falling off the rail. The rail voltage detector clip provided in this application can be installed or removed without rotating the screw. It can be installed or removed by driving the operating component to move axially. It has the characteristics of high efficiency, not easy to fall off, and high safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a structural embodiment of the rail voltage detector clip of this application; Figure 2 for Figure 1 A cross-sectional view of the China Steel Rail Electrical Detection Clip; Figure 3 for Figure 1 A schematic diagram of the main structure of the rail voltage testing clamp; Figure 4 for Figure 1 Another cross-sectional view of the China Steel Rail Voltage Detector Clip; Figure 5 for Figure 4 A schematic diagram of the sleeve structure of the China Steel Rail Electrical Detection Clamp; Figure 6 for Figure 4 A schematic diagram of the operating components of the China Steel Rail Voltage Detector Clamp; Figure 7 A schematic diagram of the intermittent component of the China Steel Rail Electrical Detection Clamp; Figure 8 This is a schematic diagram illustrating the installation steps of an embodiment of the rail voltage detector clip of this application; Figure 9 This is a schematic diagram illustrating the disassembly steps of an embodiment of the rail voltage detector clamp of this application.

[0019] Explanation of icon numbers: 100. Rail voltage tester clamp; 10. Housing assembly; 11. Mounting post; 12. Third elastic element; 20. Claw assembly; 21. Clamping element; 211. Bending part; 212. Abutting part; 213. Connecting part; 214. Clamping part; 22. First elastic element; 30. Locking assembly; 31. Locking element; 311. Locking part; 312. Mounting hole; 32. Operating element; 321. Drive part; 3211. First conical tooth; 322. Clearance hole; 33. Sleeve; 331. Channel; 3311. Slide groove; 332. Guide part; 3321. First guide tooth; 3322. Second guide tooth; 34. Intermittent element; 341. Limiting part; 342. Second conical tooth; 35. Second elastic element; 40. Handle assembly.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Furthermore, the use of terms such as "first" and "second" in this application 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 those features. 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. If 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 in this application.

[0024] Embodiments of this application provide a rail voltage detector clip 100, which facilitates engagement with the rail, prevents detachment during engagement, and improves operational safety and efficiency. Figures 1 to 4 As shown, the rail voltage tester clamp 100 includes a housing assembly 10, a claw assembly 20, and a locking assembly 30.

[0025] The claw assembly 20 includes two clamping members 21 and a first elastic member 22. The two clamping members 21 are rotatably mounted on opposite sides of the housing assembly 10 and have a clamping state for clamping the rail and an opening state for releasing the rail. The first elastic member 22 is installed between the two clamping members 21.

[0026] The two clamping members 21 can be directly and rotatably mounted on the housing assembly 10, for example, by opening a round hole in the housing assembly 10 and having a protrusion on the clamping member 21 that engages with the round hole. Alternatively, the two clamping members 21 can be indirectly and rotatably mounted on the housing assembly 10, for example, by rotating the clamping member 21 on a shaft. Based on the rotatable mounting of the two clamping members 21 on the housing assembly 10, the two clamping members 21 will rotate under external force, thus exhibiting a clamping state (clamping the rail) and an opening state (releasing the rail), and can switch back and forth between the clamping and opening states. This external force can come from the first elastic member 22, or from other components of the rail voltage detector clamp 100, such as the locking assembly 30.

[0027] The locking assembly 30 is mounted on the housing assembly 10. The locking assembly 30 includes a locking member 31 and an operating member 32. The locking member 31 is movably disposed along its axial direction. The operating member 32 is configured to control the locking member 31 to switch between a locked position and an unlocked position by moving along its axial direction. When the locking member 31 is in the locked position, it abuts against the two clamping members 21, so that the two clamping members 21 stretch the first elastic member 22, making the two clamping members 21 in a clamping state. When the locking member 31 is in the unlocked position, it avoids the two clamping members 21, so that the two clamping members 21 are in an open state under the force of the first elastic member 22.

[0028] The first elastic element 22 is installed between the two clamping elements 21, and can apply elastic force to the two clamping elements 21 respectively, so that the two clamping elements 21 are in an open state under the action of elastic force.

[0029] The operating component 32 serves as the part for the operator to operate the rail voltage tester clamp 100. The operating component 32 can be directly held and operated by the operator, that is, the operator can directly hold the operating component 32 and manually drive the operating component 32 to move along the axial direction to control the locking component 31 to switch between the locked position and the locked position. The operating component 32 can also be operated indirectly by the operator, that is, the operator can operate the operating component 32 through other components (such as: handle assembly 40) to indirectly drive the operating component 32 to move along the axial direction to control the locking component 31 to switch between the locked position and the locked position.

[0030] The rail voltage detector clip 100 provided in this application embodiment, through the above-described structural configuration, allows for the following: When the rail voltage detector clip 100 needs to be installed, it is placed on the rail. The operator only needs to drive the operating component 32 to move axially, which allows the locking component 31 to quickly switch to the locked position. Under the action of the locking component 31, the two clamping components 21 quickly squeeze or stretch the first elastic component 22, thereby quickly clamping the rail. When the rail voltage detector clip 100 needs to be disassembled, the operator only needs to drive the operating component 32 to move axially, which allows the locking component 31 to quickly switch to the unlocked position, avoiding the two clamping components 21. The two clamping components 21 will then quickly open under the force of the first elastic component 22, releasing the rail. The operator can disassemble or install the voltage detector claw with only one hand. When the locking member 31 is switched to the locked position, the locking member 31 abuts against the two clamping members 21 respectively, which can effectively prevent the two clamping members 21 from returning to the open state, that is, effectively lock the two clamping members 21 in the closed state, and prevent the rail voltage detector 100 from falling off the rail. The rail voltage detector 100 provided in this application does not require rotating the screw. The installation or disassembly of the rail voltage detector 100 can be achieved by driving the operating member 32 to move axially. It has the characteristics of high efficiency, low risk of falling off, and high safety.

[0031] Please refer to Figures 2 to 4 as well as Figure 8 , Figure 9 Both clamping parts 21 are provided with an abutment part 212, a connecting part 213 and a clamping part 214 in sequence, and the two connecting parts 213 are respectively rotatably installed on opposite sides of the housing assembly 10.

[0032] The first elastic element 22 includes, but is not limited to, springs, elastic ropes, etc. The first elastic element 22 is installed between the two clamping elements 21 and is stretched by the two clamping elements 21. When the first elastic element 22 contracts, the two clamping elements 21 open. Specifically, the first elastic element 22 is connected between the two abutting portions 212. When the locking element 31 is in the locked position, it abuts against the abutting portions 212 of the two clamping elements 21 respectively, stretching the first elastic element 22 so that the two clamping elements 21 are in a closed state. When the locking element 31 is in the unlocked position, it avoids the abutting portions 212 of the two clamping elements 21, and the contraction force of the first elastic element 22 causes the two clamping portions 214 to open. Preferably, the first elastic element 22 is installed between the two clamping elements 21 in a detachable manner, thus facilitating the replacement of the first elastic element 22 when it ages.

[0033] The two clamping members 21 can be stably kept in the open state under the action of the first elastic member 22. When the rail voltage detector clamp 100 is removed, the two clamping members 21 can also be quickly switched to the open state under the action of the first elastic member 22. With this configuration, the first elastic member 22 can be kept away from the clamping part 214 used to hold the rail, reducing the interference of the rail or other foreign objects on the first elastic member 22, so that the first elastic member 22 can play a stable and efficient role, thereby improving the reliability and service life of the rail voltage detector clamp 100. In addition, the abutment part 212 of the two clamping members 21 and the first elastic member 22 can be wrapped by the housing assembly 10 to form a reliable wrapping protection, preventing the abutment part 212 of the two clamping members 21 and the first elastic member 22 from being exposed to the external environment.

[0034] Since the locking member 31 is movably arranged along its axial direction, the locked position and the unlocked position of the locking member 31 are spaced apart in the axial direction.

[0035] In some examples, the locking member 31 is directly fixedly connected to the operating member 32. When the operating member 32 is driven to move axially by the operator, the locking member 31 moves synchronously axially with the operating member 32. That is, the operating member 32 can directly drive the locking member 31 to switch between the locked position and the unlocked position.

[0036] In some examples, the operating element 32 can control the locking element 31 to switch between a locked position and an unlocked position by cooperating with other components of the locking assembly 30. Specifically, in some examples, such as Figures 2 to 7 As shown, the locking assembly 30 includes a sleeve 33, an intermittent member 34, and a second elastic member 35. The sleeve 33 is fixedly installed on the housing assembly 10. The sleeve 33 has a channel 331 extending through it along the axial direction. The inner wall of the channel 331 is provided with a groove 3311. The end of the sleeve 33 facing the locking member 31 is also provided with a guide portion 332. The intermittent member 34 is provided at the end of the locking member 31 facing the operating member 32. The periphery of the intermittent member 34 is also provided with a limiting portion 341. The second elastic member 35 is provided at the end of the locking member 31 away from the intermittent member 34. The operating member 32 has a driving part 321 at one end facing the intermittent member 34. The driving part 321 is used to drive the intermittent member 34 to rotate intermittently together with the guide part 332 when the operating member 32 passes through the channel 331, so that the limiting part 341 abuts against the guide part 332, restricting the locking member 31 to the locked position and compressing the second elastic member 35, or, so that the limiting part 341 is aligned with the slide groove 3311, so that under the elastic drive of the second elastic member 35, the intermittent member 34 is driven by the locking member 31 to be accommodated in the channel 331, and the locking member 31 moves to the unlocked position. Preferably, the second elastic member 35 is a spring.

[0037] Before the rail voltage tester clamp 100 is installed or removed from the rail, the driving part 321 of the driving member can remain in contact with the intermittent member 34, but does not drive the intermittent member 34. That is, the intermittent member 34 is only in contact with the intermittent member 34 due to gravity or other reasons, but this gravity or other reasons is not enough to make the driving part 321 and the guide part 332 jointly drive the intermittent member 34 to rotate intermittently; the driving member can also separate the driving part 321 from the intermittent member 34 under the action of elastic force or other forces.

[0038] Please refer to Figures 2 to 8 Before the rail voltage tester clamp 100 is installed on the rail, the intermittent part 34 is housed in the channel 331, and the limiting part 341 slides in conjunction with the slide groove 3311. When the rail voltage tester clip 100 is installed on the rail, the operator drives the operating component 32 to move axially toward the intermittent component 34. The driving part 321 passes through the channel 331 under the driving action of the driving component and comes into contact with the intermittent component 34 to push the intermittent component 34 out of the channel 331. During this process, the locking component 31 also gradually compresses the second elastic component 35 under the pushing action of the intermittent component 34. After the intermittent component 34 is pushed out of the channel 331, the intermittent component 34 rotates intermittently under the joint drive of the driving part 321 and the guide part 332. That is, the intermittent component 34 is driven to rotate a certain angle, so that the limiting part 341 is misaligned with the slide groove 3311. The limiting part 341 on the periphery of the intermittent component 34 abuts against the guide part 332, limiting the locking component 31 to the locked position. At this time, the two clamping parts 21 are locked in the clamping state, which can effectively and reliably install the rail voltage tester clip 100 on the rail.

[0039] Please refer to Figures 2 to 6 as well as Figure 9 Before the rail voltage tester clip 100 is removed from the rail, the limiting part 341 on the periphery of the intermittent member 34 abuts against the guide part 332. When the rail voltage tester clip 100 is removed from the rail, the operator drives the operating part 32 to move axially toward the intermittent member 34. The driving part 321 passes through the channel 331 under the driving action of the driving part. The intermittent member 34 rotates intermittently under the joint drive of the driving part 321 and the guide part 332, that is, the intermittent member 34 is driven to rotate a certain angle so that the limiting part 341 is aligned with the slide groove 3311. At this time, the constraint of the second elastic member 35 is released due to the alignment of the limiting part 341 and the slide groove 3311. The second elastic member 35 releases elastic potential energy, that is, the second elastic member 35 elastically drives the locking member 31 to move. Under the drive of the second elastic member 35, the locking member 31 drives the intermittent member 34 to be accommodated in the channel 331 and move to the unlocked position.

[0040] The present application embodiment, through the above-described structural design, enables the locking member 31 to be locked in the closed position by the cooperation of the operating member 32, sleeve 33, intermittent member 34, and second elastic member 35 when the rail voltage detector clip 100 is installed on the rail. This avoids or reduces the risk of misoperation and improves the reliability of the rail voltage detector clip 100. Furthermore, the installation and disassembly of the rail voltage detector clip 100 are convenient.

[0041] In some examples, such as Figures 5 to 7 As shown, the drive unit 321 includes a plurality of first conical teeth 3211 spaced apart. The intermittent member 34, facing the drive unit 321, has a plurality of second conical teeth 342 spaced apart, each adapted to the first conical teeth 3211. The first conical teeth 3211 work together with the guide unit 332 to interact with the second conical teeth 342, driving the intermittent member 34 to rotate intermittently. This arrangement allows the first conical teeth 3211 and second conical teeth 342 to mesh with each other when the drive unit 321 pushes the intermittent member 34 axially, facilitating the drive unit 321 to push the intermittent member 34 out of the channel 331. When the drive unit 321 and the guide unit 332 jointly drive the intermittent member 34 to rotate intermittently, the first conical teeth 3211 and second conical teeth 342 can smoothly misalign, reducing the jerky feeling of the intermittent rotation of the intermittent member 34. In some examples, such as Figures 5 to 7 As shown, the guide portion 332 includes first guide teeth 3321 and second guide teeth 3322 alternately distributed along the circumference of the sleeve 33. The number of first guide teeth 3321 corresponds one-to-one with the number of slide grooves 3311. The root of each first guide tooth 3321 is provided with a corresponding slot of slide groove 3311. This arrangement allows the intermittent member 34 to stably engage with the first guide teeth 3321 and second guide teeth 3322 of the guide portion 332 after the operator operates the operating member 32. It also allows the limiting portion 341 of the intermittent member 34 to smoothly slide into the slot of the corresponding slide groove 3311 under the guidance of the root of the first guide tooth 3321.

[0042] In some examples, such as Figure 5 and Figure 7 As shown, both the limiting part 341 and the sliding groove 3311 extend axially. When the locking member 31 drives the intermittent member 34 to be accommodated in the channel 331, the limiting part 341 and the sliding groove 3311 slide in cooperation. With this configuration, the limiting part 341 slides more smoothly and is less prone to displacement during the sliding cooperation with the sliding groove 3311.

[0043] In some examples, such as Figure 2As shown, the intermittent member 34 is sleeved on the end of the locking member 31 facing the operating member 32, and rotates relative to the locking member 31 when the driving part 321 drives the intermittent rotation. With this configuration, since the intermittent member 34 is sleeved on the locking member 31, the axis of the intermittent member 34 will not shift during the intermittent rotation, thus improving the stability of the intermittent member 34.

[0044] In some examples, such as Figures 5 to 7 As shown, the rail voltage detector clip 100 includes a handle assembly 40, and the operating component 32 is also floatingly mounted on the housing assembly 10 via the handle assembly 40. The handle assembly 40 can have various shapes, and can be designed to be easy for workers to grip, and can have patterns on its outer surface to increase the coefficient of friction.

[0045] With this configuration, the operator can indirectly operate the operating component 32 through the handle assembly 40. Since the operating component 32 is floatingly mounted on the housing assembly 10 through the handle assembly 40, after each operation of the operating component 32, the handle assembly 40 can drive the operating component 32 to reset, thereby separating the drive unit 321 from the intermittent component 34, and further avoiding or reducing the occurrence of misoperation.

[0046] In some examples, such as Figure 2 As shown, the housing assembly 10 includes a third elastic element 12, and the handle assembly 40 is axially movably mounted on the housing assembly 10. The handle assembly 40 is fixedly connected to the operating element 32, and the third elastic element 12 is elastically mounted between the handle assembly 40 and the housing assembly 10. Preferably, the third elastic element 12 is a spring. This arrangement facilitates the installation of the handle assembly 40 and allows the operator to use the handle assembly 40 to operate the operating element 32.

[0047] In some examples, such as Figure 2 and Figure 3 As shown, the clamping member 21 has a bent portion 211 on the side of the abutment portion 212 away from the connecting portion 213. The bent portion 211 of each clamping member 21 is inclined away from the side of the other clamping member 21. The locking member 31 has a spherical locking portion 311. When the locking member 31 moves from the unlocked position to the locked position, the locking portion 311 slides and engages with the bent portions 211 of the two clamping members 21 respectively, so as to slide into the gap between the abutment portions 212 of the two clamping members 21 and abut against the abutment portions 212. With this configuration, when the locking member 31 is in the locked position, the locking portion 311 abuts and engages with the two abutment portions 212 respectively, so as to stably and reliably keep the two clamping portions 214 in a clamping state. At the same time, the switching of the locking member 31 between the locked position and the unlocked position is also smoother.

[0048] In some examples, such as Figure 2As shown, the operating member 32 is provided with an axial clearance hole 322, the locking member 31 is provided with an axial through mounting hole 312, and the housing assembly 10 includes a fixedly provided mounting post 11. The axis of the mounting post 11 coincides with the axis of the locking member 31. The mounting post 11 passes through the mounting hole 312 and is at least partially accommodated in the clearance hole 322.

[0049] This configuration aims to make the operating component 32, locking component 31, and the aforementioned intermittent component 34 coaxially aligned by installing the column 11, thereby making the operation of the rail voltage tester clamp 100 more convenient and smoother.

[0050] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A rail voltage detector clip, characterized in that, The rail voltage detector clamp includes a housing assembly, a claw assembly, and a locking assembly; wherein... The claw assembly includes two clamping members and a first elastic member. The two clamping members are rotatably mounted on opposite sides of the housing assembly and have a clamping state for clamping the rail and an opening state for releasing the rail. The first elastic member is installed between the two clamping members. The locking assembly is mounted on the housing assembly. The locking assembly includes a locking member and an operating member. The locking member is movably disposed along its axial direction. The operating member is configured to control the locking member to switch between a locked position and an unlocked position when it moves along the axial direction. When the locking member is in the locked position, it abuts against the two clamping members respectively, so that the first elastic member is stretched by the two clamping members, so that the two clamping members are in the hugging state. When the locking member is in the unlocked position, it avoids the two clamping members, so that the two clamping members are in the open state under the force of the first elastic member.

2. The rail voltage testing clamp as described in claim 1, characterized in that, Both clamping members are provided with an abutting part, a connecting part and a clamping part in sequence. The two connecting parts are rotatably mounted on opposite sides of the housing assembly, and the first elastic member is connected between the two abutting parts. When the locking member is in the locked position, it abuts against the abutting portions of the two clamping members respectively, so as to stretch the first elastic member and make the two clamping members in the hugging state. When the locking member is in the unlocked position, it avoids the abutting portion of the two clamping members, and the contraction force of the first elastic member causes the two clamping portions to be in the open state.

3. The rail electrical testing clip as described in claim 2, characterized in that, The locking assembly includes a sleeve, an intermittent element, and a second elastic element. The sleeve is fixedly installed on the housing assembly. The sleeve has a channel extending through it along the axial direction. The inner wall of the channel has a sliding groove. The end of the sleeve facing the locking element also has a guide portion. The intermittent element is located at the end of the locking element facing the operating element. The periphery of the intermittent element also has a limiting portion. The second elastic element is located at the end of the locking element away from the intermittent element. The operating member has a driving part at one end facing the intermittent member. The driving part is used to drive the intermittent member to rotate intermittently together with the guide part when the operating member passes through the channel, so that the limiting part abuts against the guide part, restricts the locking member to the locked position, and compresses the second elastic member, or, so that the limiting part is aligned with the slide groove, so that under the elastic drive of the second elastic member, the intermittent member is driven by the locking member to be accommodated in the channel, and the locking member moves to the unlocked position.

4. The rail voltage detector clip as described in claim 3, characterized in that, The driving part includes a plurality of first conical teeth spaced apart. The intermittent member has a plurality of second conical teeth spaced apart on the side facing the driving part, which are adapted to the plurality of first conical teeth. The first conical teeth are used to work together with the guide part to act on the second conical teeth to drive the intermittent member to rotate intermittently.

5. The rail voltage testing clip as described in claim 4, characterized in that, The guide portion includes first guide teeth and second guide teeth that are alternately distributed along the circumference of the sleeve. The number of first guide teeth corresponds one-to-one with the number of slide grooves. The root of each first guide tooth is provided with a corresponding groove opening of the slide groove.

6. The rail electrical testing clip as described in claim 3, characterized in that, Both the limiting part and the slide groove extend along the axial direction. When the locking member drives the intermittent member to be accommodated in the channel, the limiting part and the slide groove slide together.

7. The rail voltage testing clip as described in claim 3, characterized in that, The intermittent element is sleeved on the end of the locking element facing the operating element, and rotates relative to the locking element when the driving part drives the intermittent rotation.

8. The rail voltage testing clip as described in claim 3, characterized in that, The rail voltage tester clamp includes a handle assembly, and the operating component is also floatingly mounted on the housing assembly via the handle assembly.

9. The rail voltage testing clip as described in claim 8, characterized in that, The housing assembly includes a third elastic element, the handle assembly is movably mounted on the housing assembly along the axial direction, the handle assembly is fixedly connected to the operating element, and the third elastic element is elastically mounted between the handle assembly and the housing assembly.

10. The rail voltage testing clamp as described in claim 2, characterized in that, The clamping member is further provided with a bent portion on the side of the abutment portion away from the connecting portion. The bent portion of each clamping member is inclined to the side away from the other clamping member. The locking member is provided with a spherical locking portion. When the locking member moves from the unlocked position to the locked position, the locking portion slides and engages with the bent portions of the two clamping members respectively, so as to slide into the gap between the abutment portions of the two clamping members and abut against the abutment portions.

11. The rail voltage detector clip as described in any one of claims 2 to 10, characterized in that, The operating member is provided with a clearance hole along the axial direction, the locking member is provided with a mounting hole through the axial direction, and the housing assembly includes a fixedly provided mounting post. The axis of the mounting post coincides with the axis of the locking member. The mounting post passes through the mounting hole and is at least partially accommodated in the clearance hole.

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