Test clamp

Abstract

The utility model discloses a test clamp, which comprises a pair of clamp heads, a pair of clamp handles and a pair of mounting plates, the two clamp handles are hinged with each other, one end of each clamp head is abutted against one end of each clamp handle, the mounting plates are arranged on one side of each clamp head and one side of each clamp handle, and the clamp heads and the clamp handles are respectively and detachably mounted and fixed with the mounting plates; first clamping parts are arranged at the ends, away from the forceps handles, of the forceps heads, the first clamping parts at the ends of the two forceps heads are mutually enclosed to form a first clamping head, the first clamping head is in a hollow cylinder shape, and threads are formed on the surface of the inner side wall of the first clamping head. The clamping device has the advantages that the contact area between the first clamping head and the generator stud is larger during clamping, and the threads are formed on the surface of the inner side wall of the first clamping head, so that the generator stud is clamped more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping instruments, in particular to a testing pliers. Background Art

[0002] Generator stud testers, as professional power testing tools, are primarily used to test and inspect the electrical performance of generators and their associated components. Specifically, they can measure the contact resistance between the generator stud and other connected components. Contact resistance is a key indicator of electrical connection quality. Excessive contact resistance can lead to poor current transmission, heat generation, and even malfunction. Furthermore, generator stud testers can be used to measure resistance within the generator circuit to assess circuit integrity and performance, ensuring proper operation.

[0003] When performing electrical testing on a generator, a test clamp is required to clamp the generator studs. Existing test clamps have insufficient contact force due to the small contact area between the clamp and the studs. This can easily lead to the clamp and the stud becoming detached, necessitating improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a test clamp which has a larger contact area with the generator stud during clamping, so as to clamp the generator stud more firmly and can adapt to clamping generator studs of different models.

[0005] The utility model proposes a test pliers, comprising a pair of pliers heads, a pair of pliers handles and a pair of mounting plates, the two pliers handles are hinged, one end of the pliers head abuts against one end of the pliers handles, the mounting plate is arranged on one side of the pliers head and the pliers handles, and the pliers head and the pliers handles are respectively detachably mounted and fixed to the mounting plates; a first clamping portion is provided at the end of the pliers head away from the pliers handles, the first clamping portions on the end portions of the two pliers heads are mutually enclosed to form a first chuck, the first chuck is in the shape of a hollow cylinder, and a thread is formed on the inner side wall surface of the first chuck.

[0006] Preferably, the mounting plate includes a connecting plate and two surrounding plates, the connecting plate is located between the two surrounding plates, the two sides of the connecting plate are respectively connected to the two surrounding plates, the connecting plate and the two surrounding plates are mutually surrounded to form a receiving groove, and one side of the pliers head and the pliers handle is embedded in the receiving groove and fixed to the mounting plate.

[0007] Preferably, the pliers head and the pliers handle are respectively fixed to the connecting plate by bolts.

[0008] Preferably, the two side surfaces of the pliers head are respectively provided with a second clamping part and a third clamping part, the second clamping parts on the two pliers heads are mutually enclosed to form a second chuck, and the third clamping parts on the two pliers heads are mutually enclosed to form a third chuck, the second chuck and the third chuck are both hollow cylindrical, and the inner side wall surfaces of the second chuck and the third chuck are formed with threads.

[0009] Preferably, the first chuck, the second chuck and the third chuck have the same specifications and sizes.

[0010] Preferably, the specifications of the first chuck, the second chuck and the third chuck are one of M8, M6 and M5.

[0011] Preferably, the height dimensions of the first chuck, the second chuck and the third chuck are the same and are all set to "A" and meet the requirements of 15mm. <A<25mm。

[0012] Preferably, the outer shell of the pliers handle is provided with a rubber sleeve.

[0013] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0014] 1. The first chuck is hollow cylindrical, which has a larger contact area with the generator stud when clamping. The inner wall surface of the first chuck is formed with a thread to increase the friction between the first chuck and the generator stud, thereby clamping the generator stud more firmly.

[0015] 2. A second clamping portion and a third clamping portion are respectively provided on both side surfaces of the clamp head. When clamping, the two clamp heads are enclosed with each other to form a second clamp head and a third clamp head. When the space available for clamping the generator stud is too small, the generator stud can be clamped by the second clamp head or the third clamp head enclosed by the two clamp heads, avoiding interference with it by the clamp handle during the clamping process.

[0016] 3. The specifications and dimensions of the first chuck, the second chuck and the third chuck are set to be the same, and the pliers head and the pliers handle are detachably installed through a mounting plate. The pliers head can be replaced according to the model of the generator screw to be clamped to match the model of the generator screw, so that the test pliers can clamp the generator screw more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the test clamp in the embodiment when it is in an open state;

[0018] Figure 2 This is a schematic structural diagram of the installation panel of the embodiment;

[0019] Figure 3is a schematic diagram of the test pliers in the embodiment when they are in a tightly gripped state;

[0020] Figure 4 1 is a schematic structural diagram of the clamp head of an embodiment;

[0021] Figure 5 is a side view of a test clamp according to an embodiment;

[0022] Figure 6 1 is a schematic diagram of the state of the test clamp of the embodiment clamping the generator stud.

[0023] Figure numerals: 1. Clamp head; 11. First clamping part; 111. Thread; 12. First clamp; 13. Second clamp; 14. Second clamp; 15. Third clamp; 16. Third clamp; 2. Clamp handle; 21. Rubber sleeve; 3. Mounting plate; 31. Enclosure; 32. Connecting plate; 33. Receiving groove. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-6 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Reference Figure 1 and Figure 2 A test pliers comprises a pair of pliers heads 1, a pair of pliers handles 2 and a pair of mounting plates 3, which hinge the two pliers handles 2. The mounting plate 3 comprises two panels 31 and a connecting plate 32. The connecting plate 32 is arranged between the two panels 31. The two sides of the connecting plate 32 are respectively connected to one side of the two panels 31, so that a receiving groove 33 is formed between the connecting plate 32 and the two panels 31. One end of the pliers head 1 is abutted against one end of the pliers handle 2, and the pliers head 1 and the pliers handle 2 are both embedded in the receiving groove 33 of the mounting plate 3, so that the side surfaces of the pliers head 1 and the pliers handle 2 abut against the connecting plate 32, and part of the surface of the pliers head 1 and part of the surface of the pliers handle 2 abut against the panels 31. The connecting plate 32 is respectively fixed to the pliers head 1 and the pliers handle 2 by bolts. In this way, the detachable installation between the pliers head 1 and the pliers handle 2 is achieved. The connecting plate 32 is respectively fixed to the pliers head 1 and the pliers handle 2 by bolts, which not only fixes them firmly but also has the advantage of being easy to disassemble.

[0026] Reference Figure 1 、 Figure 2 and Figure 3When clamping a generator stud with this test pliers, to ensure good contact between the test pliers and the generator stud, first clamping portions 11 are provided at the ends of the two clamp heads 1. The two clamp handles 2 are gripped tightly so that the side surfaces of the two clamp heads 1 abut against each other, thereby enclosing the two first clamping portions 11 to form a first clamp head 12. The enclosed first clamp head 12 is hollow cylindrical, and the inner sidewall surface of the first clamp head 12 is formed with threads 111. When clamping a generator stud with this test pliers, the two first clamping portions 11 are placed at both ends of the generator stud, and the two clamp handles 2 are gripped tightly so that the first clamping portions 11 at the ends of the two clamp heads 1 clamp the generator stud tightly.

[0027] Reference Figure 1 、 Figure 3 and Figure 4 The two first clamping portions 11 enclose each other to form a hollow cylindrical first clamp 12. Compared to traditional test clamps, this clamp increases the contact area between the clamp and the generator stud during clamping, thereby increasing the contact force of the test clamp on the generator stud, thereby ensuring a more secure grip on the generator stud. Threads 111 are formed on the inner sidewall of the first clamp 12 to increase friction between the inner sidewall of the first clamp 12 and the generator stud, further enhancing the test clamp's grip on the generator stud.

[0028] In order to solve the problem that the operating space at the generator stud is too small, and the test pliers are inconvenient to clamp the generator stud. A second clamping part 13 is provided on one of the surfaces of the two clamp heads 1. When the two clamp heads 1 are in contact with each other, the two second clamping parts 13 are enclosed with each other to form a hollow cylindrical second clamp 14. The second clamp 14 is perpendicular to the first clamp 12, so that when clamping the generator stud in a small space, the clamp handle 2 is prevented from interfering with the space during the clamping process. Similarly, a thread 111 is formed on the inner wall surface of the second clamp 14, so that when the second clamp 14 is used to clamp the generator stud, it can be clamped more firmly.

[0029] Reference Figure 1 and Figure 5, on the other side of the two clamping heads 1, a third clamping portion 15 is provided. When the two clamping heads 1 are abutted against each other, the third clamping portions 15 on the two clamping heads 1 enclose each other to form a third chuck 16. Similarly, threads 111 are formed on the inner wall surface of the third chuck 16 to further cope with the clamping of the generator screw in a narrow space. The models and sizes of the first chuck 12, the second chuck 14 and the third chuck 16 are the same. The model and size of the first chuck 12 is one of M8, M6 and M5, and the model and sizes of the second chuck 14 and the third chuck 16 are set to be the same as those of the first chuck 12. The height dimensions of the first chuck 12, the second chuck 14 and the third chuck 16 are the same, all set to "A", and the height dimensions of the first chuck 12, the second chuck 14 and the third chuck 16 satisfy 15mm < A < 25mm, so that the first chuck 12, the second chuck 14 and the third chuck 16 have appropriate height dimensions to have a good clamping effect on the generator screw.

[0030] Refer to Figure 2 , Figure 3 and Figure 6 , according to the model of the generator screw to be clamped, select the corresponding clamping head 1 so that the models of the first chuck 12, the second chuck 14 and the third chuck 16 on the clamping head 1 match the model of the generator screw. Then the clamping head 1 can be embedded in the receiving groove 33 of the mounting plate member 3, and the end of the clamping head 1 is abutted against the end of the clamping handle 2, and the clamping head 1 and the mounting plate member 3 are fixed by bolt locking. The clamping head 1 and the clamping handle 2 of this test clamp are detachably installed, so that this test clamp can cope with the clamping of generator screws of different models. In addition, in order to facilitate the clamping operation of this test clamp, a rubber sleeve 21 is wrapped around the outer periphery of the clamping handle 2 of this test clamp, which plays a protective role for the user's hand when using this test clamp to avoid damaging the user's hand.

[0031] The specific implementation principle of the embodiment of the present application is as follows: When clamping a generator stud, a pair of pliers 1 corresponding to the generator stud model is selected, such that the first, second, and third pliers 12, 14, and 16 on the pliers 1 all match the generator stud model. The pliers handle 2 is inserted into the receiving slot 33 of the mounting plate 3, and the pliers handle 2 is secured to the connecting plate 32 with bolts. The selected pliers 1 is then inserted into the receiving slot 33 of the mounting plate 3, such that the side surface of the pliers 1 abuts the connecting plate 32, and the end of the pliers 1 without the first clamping portion 11 abuts the end of the pliers handle 2. Finally, the pliers 1 is also secured to the connecting plate 32 with bolts. The first pliers 12, formed by the two first clamping portions 11, is configured as a hollow cylindrical shape. This provides a larger contact area with the engine stud surface when clamping the engine stud, thereby providing a more secure clamp. The threads 111 formed on the inner wall of the first clamp 12 increase the friction with the surface of the engine stud, further improving the firmness of the test clamp in clamping the engine stud.

[0032] When it is necessary to clamp the generator stud, the two clamp handles 2 of the test pliers are opened away from each other, so that the first clamping parts 11 on the two clamp heads 1 are separated from each other. The first clamping parts 11 on the two clamp heads 1 are placed on both sides of the generator stud, and then the two clamp handles 2 are tightened so that the first clamping parts 11 on the two clamp heads 1 firmly clamp the generator stud. When the operating space at the generator stud is too small, one end of the clamp head 1 of the test pliers can be inserted into it, and the two clamp handles 2 of the test pliers are opened away from each other, so that the second clamping parts 13 and the third clamping parts 15 on the two clamp heads 1 are separated from each other. The second clamping parts 13 or the third clamping parts 15 on the two clamp heads 1 are placed on both sides of the generator stud, and then the two clamp handles 2 are tightened so that the second clamping parts 13 or the third clamping parts 15 on the two clamp heads 1 firmly clamp the generator stud.

[0033] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all protected by the present invention.

Claims

1. A test clamp, characterized in that: The invention comprises a pair of pliers heads, a pair of pliers handles and a pair of mounting plates, wherein the two pliers handles are hinged, one end of the pliers heads abuts against one end of the pliers handles, and the mounting plates are arranged on one side of the pliers heads and the pliers handles, and the pliers heads and the pliers handles are respectively detachably mounted and fixed to the mounting plates; A first clamping portion is provided at the end of the pliers head away from the pliers handle. The first clamping portions on the two ends of the pliers head are mutually enclosed to form a first chuck. The first chuck is hollow cylindrical and a thread is formed on the inner wall surface of the first chuck.

2. The test clamp according to claim 1, characterized in that: The mounting plate includes a connecting plate and two surrounding plates, the connecting plate is located between the two surrounding plates, the two sides of the connecting plate are respectively connected to the two surrounding plates, the connecting plate and the two surrounding plates are mutually surrounded to form a receiving groove, and one side of the pliers head and the pliers handle is embedded in the receiving groove and fixed to the mounting plate.

3. The test clamp according to claim 2, characterized in that: The pliers head and the pliers handle are respectively fixed to the connecting plate by bolts.

4. The test clamp according to claim 1, characterized in that: The two side surfaces of the pliers head are respectively provided with a second clamping part and a third clamping part. The second clamping parts on the two pliers heads are mutually enclosed to form a second chuck, and the third clamping parts on the two pliers heads are mutually enclosed to form a third chuck. The second chuck and the third chuck are both hollow cylindrical, and the inner side wall surfaces of the second chuck and the third chuck are formed with threads.

5. The test clamp according to claim 4, characterized in that: The specifications and sizes of the first clamp, the second clamp and the third clamp are all the same.

6. The test clamp according to claim 5, characterized in that: The specifications of the first chuck, the second chuck and the third chuck are one of M8, M6 and M5.

7. The test clamp according to claim 1, characterized in that: The height dimensions of the first chuck, the second chuck and the third chuck are the same and are all set to "A" and meet the requirements of 15mm <A<25mm。 8. The test clamp according to claim 1, characterized in that: The outer periphery of the pliers handle is provided with a rubber sleeve.

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