Pincer-shaped grounding resistance meter

Abstract

The utility model relates to the technical field of resistance meters, in particular to a pincer-like grounding resistance meter. The pincer-like grounding resistance meter comprises a pincer-like grounding resistance meter body, an expansion assembly is installed outside a trigger in the pincer-like grounding resistance meter body, and an auxiliary assembly is installed on a machine body in the pincer-like grounding resistance meter body. According to the pincer-like grounding resistance meter provided by the utility model, the extension of the trigger can be realized, the external torque when the trigger is driven is increased, a person can hold the device by one hand and push the expansion rod by the other hand, so that the trigger can be operated, the action force for driving the device can be reduced, and the reliability of the device is improved. And meanwhile, two-hand operation is more friendly to operators with relatively small palms.

Description

Technical Field

[0001] This utility model relates to the field of resistance meter technology, and in particular to a clamp-on grounding resistance meter. Background Technology

[0002] A clamp-on grounding resistance meter (also known as a clamp-on grounding resistance tester) is a portable instrument used to measure grounding resistance. It can quickly detect the resistance value of a grounding system online without disconnecting the grounding lead or using auxiliary electrodes.

[0003] In most existing clamp-on grounding resistance meters, the operator holds the device body and spreads their fingers to grip the trigger handle to open the clamp-on grounding resistance meter. Since the clamp-on grounding resistance meter body is relatively small and the protruding trigger is relatively short, according to the lever principle, a relatively large force is required to drive it when the torque is relatively short. This one-handed operation method is very inconvenient for operators with relatively small hands.

[0004] Therefore, it is necessary to provide a new clamp-on grounding resistance meter to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a clamp-on grounding resistance meter.

[0006] The clamp-on grounding resistance meter provided by this utility model includes: a clamp-on grounding resistance meter, wherein an extension component is installed on the outside of the trigger of the clamp-on grounding resistance meter, and an auxiliary component is installed on the body of the clamp-on grounding resistance meter;

[0007] The extension component includes a guide frame, which is fixedly mounted on the trigger in the clamp-on grounding resistance meter. An extension rod is slidably connected inside the guide frame, and a slider is fixedly connected to the end of the extension rod. The outer wall of the slider abuts against and is slidably connected to the inner wall of the guide frame.

[0008] The top of the slider is fitted with a fixed mounting frame, and a slidingly connected limiting rod is inserted inside the mounting frame. Limiting holes are opened on both sides of the top of the guide frame. The inner wall of the limiting hole and the end of the limiting rod are both hemispherical, and the end of the limiting rod abuts against the inner wall of the limiting hole.

[0009] Preferably, the auxiliary component includes guide rails, two of which are fixedly mounted on the body of the clamp-type grounding resistance meter. Sliding strips are inserted inside both guide rails, and a gripping rod with the same fixed connection is mounted between the ends of one side of the two sliding strips.

[0010] Preferably, the guide rail has through holes on both sides, and the guide rail has fixedly connected retaining frames at both ends by bolts. The inner wall of the guide rail end section and the slide bar end section are both convex structures.

[0011] Preferably, a fixedly connected support frame is installed on one side of the top of the two slide bars, and a connecting rod with the same sliding connection is inserted between the two support frames, and the two ends of the connecting rod extend to the outside of the corresponding guide rail through through holes.

[0012] Preferably, mounting plates are fixedly connected to both sides of the connecting rod, and compression springs are provided between the mounting plates and the corresponding support frames, with the two ends of the compression springs fixedly connected to the corresponding mounting plates and support frames, respectively.

[0013] Preferably, a fixedly connected protruding ring is installed at the end of the guide frame, and a limit cap is installed on the outside of the protruding ring through a threaded structure.

[0014] Preferably, the mounting frame is provided with a limiting spring inside, and the two ends of the limiting spring are fixedly connected to the corresponding mounting frame and the limiting rod, respectively.

[0015] Compared with related technologies, the clamp-on grounding resistance meter provided by this utility model has the following advantages:

[0016] 1. By setting up an extension component, this utility model allows the user to pull the extension rod during use, causing it to extend outward from the inside of the guide frame, thereby extending the trigger and increasing the external torque when driving the trigger. The user can hold the device itself with one hand and push the extension rod with the other hand to operate the trigger. This operation method not only reduces the driving force on the device, but also makes it more user-friendly for operators with relatively small hands.

[0017] 2. When using this utility model, the user can also unfold the grip rod in the auxiliary component to form an extended grip handle on the outside of the device. This not only provides options for workers with relatively small hands, but also makes it more convenient for the user to hold and pick up the device when carrying it, thus improving the user experience of the device. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the clamp-on grounding resistance meter provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the structure of the extended component.

[0020] Figure 3 for Figure 1A schematic diagram of the extension rod and its components is shown.

[0021] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the installation shown;

[0022] Figure 5 for Figure 1 The diagram shows the structure of the guide rail.

[0023] Figure 6 for Figure 1 The diagram shows the structure of the slider and its components.

[0024] The following components are labeled in the diagram: 1. Clamp-on grounding resistance meter; 2. Extension assembly; 21. Guide frame; 211. Limiting hole; 212. Convex ring; 213. Limiting cap; 22. Extension rod; 221. Slider; 23. Mounting frame; 231. Limiting rod; 232. Limiting spring; 3. Auxiliary assembly; 31. Guide rail; 311. Through hole; 312. Stop frame; 32. Sliding bar; 321. Support frame; 33. Grip rod; 34. Connecting rod; 341. Mounting piece; 342. Compression spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] Please see Figures 1 to 6 The present invention provides a clamp-on grounding resistance meter, the clamp-on grounding resistance meter 1 includes: a clamp-on grounding resistance meter 1, an extension component 2 is installed on the outside of the trigger of the clamp-on grounding resistance meter 1, and an auxiliary component 3 is installed on the body of the clamp-on grounding resistance meter 1.

[0028] In the embodiments of this utility model, please refer to Figures 1 to 6The extension component 2 includes a guide frame 21, which is fixedly mounted on the trigger in the clamp-on grounding resistor 1. An extension rod 22 is slidably connected inside the guide frame 21. A slider 221 is fixedly connected to the end of the extension rod 22. The outer wall of the slider 221 abuts against and is slidably connected to the inner wall of the guide frame 21. A mounting frame 23 is fixedly connected to the top of the slider 221. A limiting rod 231 is slidably connected inside the mounting frame 23. Limiting holes 211 are opened on both sides of the top of the guide frame 21. The inner wall of the limiting hole 211 and the end of the limiting rod 231 are both hemispherical, and the end of the limiting rod 231 abuts against the inner wall of the limiting hole 211. A limiting spring 232 is provided inside the mounting frame 23, and the two ends of the limiting spring 232 are fixedly connected to the corresponding mounting frame 23 and the limiting rod 231, respectively.

[0029] It should be noted that by making the inner wall of the limiting hole 211 and the end of the limiting rod 231 hemispherical, when the limiting rod 231 is subjected to tension, the hemispherical structure will convert the horizontal tension into a vertical driving force, thereby allowing the limiting rod 231 to slide out from the limiting hole 211. This allows the extension rod 22 to slide outward stably until it slides to the end of the guide frame 21 and abuts against the limiting hole 211 on the other side. At this point, the limiting rod 231 will be inserted into the limiting hole 211 under the force of the limiting spring 232, thus limiting the extension and allowing it to unfold stably. This extends the device trigger and increases the external torque when driving the trigger. At this time, the operator can hold the device itself with one hand and push the extension rod 22 with the other hand to operate the trigger. This operation method not only reduces the driving force on the device, but also makes it more user-friendly for operators with relatively small hands.

[0030] The slider 221 has a rectangular structure. During use, the rectangular structure of the slider 221 can prevent the extension rod 22 from rotating. Therefore, the position of the limiting rod 231 and the limiting hole 211 can always be in the same vertical plane, so that the limiting rod 231 can be smoothly inserted into the limiting hole 211.

[0031] In the embodiments of this utility model, please refer to Figures 1 to 6The auxiliary component 3 includes a guide rail 31. Two guide rails 31 are provided and fixedly installed on the body of the clamp-type grounding resistance meter 1. Sliding strips 32 are inserted inside the two guide rails 31. A gripping rod 33 with the same fixed connection is mounted between the ends of the two slide strips 32 on one side. Through holes 311 are opened on both sides of the inside of the guide rail 31. A retaining frame 312 with the same fixed connection is installed at both ends of the guide rail 31 by bolts. The inner wall of the end section of the guide rail 31 and the end section of the slide strip 32 are both convex structures. A support frame 321 with the same fixed connection is installed on one side of the top of the two slide strips 32. A connecting rod 34 with the same sliding connection is inserted between the two support frames 321. The two ends of the connecting rod 34 extend to the outside of the corresponding guide rail 31 through the through holes 311. Mounting pieces 341 with the same fixed connection are installed on both sides of the connecting rod 34. A compression spring 342 is provided between the mounting piece 341 and the corresponding support frame 321. The two ends of the compression spring 342 are fixedly connected to the corresponding mounting piece 341 and the support frame 321 respectively.

[0032] It should be noted that during use, the operator can lift the connecting rod 34 so that it slides out of the through hole 311, thereby releasing the restriction on the slider 32. At the same time, the operator can also turn the slider 32 and the grip rod 33 at its end to slide outward, so that the grip rod 33 can form an expanded grip handle on the outside of the device. This not only provides an option for operators with relatively small hands, but also makes it more convenient for operators to hold and pick up the device when carrying it, thus helping to improve the user experience of the device.

[0033] By passing the end of the connecting rod 34 through the through hole 311 through the guide rail 31, the connecting rod 34 can block the sliding trajectory of the slider 32, so that the gripping rod 33 can be stably positioned when it is extended or retracted, thereby preventing the gripping rod 33 from shifting randomly.

[0034] In the embodiments of this utility model, please refer to Figures 1 to 6 The end of the guide frame 21 is fitted with a fixedly connected protruding ring 212, and a limit cap 213 is installed on the outside of the protruding ring 212 through a threaded structure.

[0035] It should be noted that: by setting the limit cap 213, when the extension rod 22 is pulled and unfolded, the limit cap 213 can block the sliding trajectory of the slider 221, thereby preventing the slider 221 from falling out of the guide frame 21, thus allowing the slider 221 to slide stably.

[0036] The working principle of the clamp-on grounding resistance meter provided by this utility model is as follows:

[0037] When using the clamp-on grounding resistance meter 1, the operator can first pull the extension rod 22 in the extension component 2. The extension rod 22 will then drive the slider 221 at the end to slide inside the guide frame 21. The sliding force of the slider 221 will act on the limiting rod 231 through the mounting frame 23 at the top. Since the end of the limiting rod 231 and the inside of the limiting hole 211 are both hemispherical structures, the horizontal force on the limiting rod 231 will be transformed into a vertical force driving it. This allows the limiting rod 231 to slide out from inside the limiting hole 211. Thus, the extension rod 22 can slide outward stably until it slides to the end of the guide frame 21 and abuts against the limiting hole 211 on the other side. At this point, the limiting rod 231 will be inserted into the limiting hole 211 under the force of the limiting spring 232, thus limiting the extension and allowing it to be stably extended.

[0038] After the extension rod 22 is fully extended, the operator can hold the device body with one hand and push the extension rod 22 with the other hand to smoothly drive the trigger in the device to open the jaws of the clamp-on grounding resistance meter 1. The extension of the extension rod 22 increases the torque of the trigger in the clamp-on grounding resistance meter 1, which can reduce the gripping force required to drive the clamp-on grounding resistance meter 1. Therefore, it is easier and less strenuous for the operator to drive the device. At the same time, the extension of the extension rod 22 also allows operators with relatively small hands to operate with both hands, thereby improving the portability and flexibility of the operator.

[0039] Meanwhile, during operation, if a person with relatively small hands finds it uncomfortable to hold the clamp-on grounding resistance meter 1, they can pull the connecting rod 34 so that its end can slide out of the through hole 311 to release the limit between the slider 32 and the guide rail 31. Then, a lateral force can be applied to make the slider 32 slide within the guide rail 31, which will unfold the external gripping rod 33, forming a handle on the outside of the clamp-on grounding resistance meter 1. This increases the possibility of choosing a gripping area when the person is handling the device, allowing the person to hold it more comfortably, thus improving the user experience of the device.

[0040] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamp-on grounding resistance meter, characterized in that, The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model discloses a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester.

2. The clip-on earth resistance tester according to claim 1, characterized in that, The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester.

3. The clip-on earth tester according to claim 2, characterized in that The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester.

4. The pincer ground resistance meter according to claim 3, characterized in that, The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester.

5. The clip-on earth tester of claim 4, wherein, The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester.

6. The clip-on earth tester of claim 1, wherein, The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester.

7. The clip-on earth tester of claim 1, wherein, The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. The utility model relates to a kind of extension assembly and auxiliary assembly of pincer ground resistance tester. 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