Clamp for testing resistance of large-section conductor

Abstract

The utility model discloses a large cross-section conductor resistance test fixture, which comprises a fixture table, an upper chuck, a lower chuck and an operation box, the top surface of the fixture table is fixedly connected with the lower chuck, the interior of the operation box is slidably connected with a lifting platform, the lifting platform is in threaded connection with a lead screw, an input shaft at the top end of the lead screw is fixedly connected with a main operation board, and the main operation board is connected with an output shaft. A moving column is fixedly connected to the lifting table, an upper chuck is fixedly connected to the bottom end of the moving column, in addition, a gear is fixedly connected to the input shaft, a moving shaft is rotationally connected to the operation box, a pusher dog is fixedly connected to the moving shaft, the pusher dog can rotationally abut against gear teeth of the gear, and a worm gear is fixedly connected to the bottom end of the moving shaft; a worm is rotationally connected into the operation box and is in meshed connection with the worm gear, and one end of the worm penetrates out of the operation box and is fixedly connected with an auxiliary operation board. The utility model relates to the technical field of clamps, and has the characteristics of large clamping force and stable clamping.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a fixture for testing the resistance of large cross-section conductors. Background Technology

[0002] Conductor resistance testing is a crucial step in the performance testing of electrical equipment and materials, especially for large-section conductors. The accurate measurement of their resistance directly affects the safety and reliability of electrical equipment. In existing technologies, conductor resistance testing typically uses clamps to hold the conductor to ensure good contact between the conductor and the test electrodes during the test. However, in existing technologies, rotating a turntable causes the screw to rotate, which in turn lowers the upper clamp at the bottom of the screw to clamp and fix the conductor with the lower clamp at the bottom. This structure is difficult to apply sufficient clamping force to large-section conductors and is prone to loosening due to the conductor's reaction force, affecting the accuracy of the test. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a clamp with strong clamping force and stable clamping.

[0004] The technical solution adopted by this utility model to achieve the above objectives is: a fixture for testing the resistance of a large cross-section conductor, including a fixture platform, an upper clamp, a lower clamp, and an operation box. The lower clamp is fixedly connected to the top surface of the fixture platform, and the operation box is fixedly connected to the fixture platform through a connecting frame.

[0005] The operating box is slidably connected to a lifting platform. A lead screw is threaded onto the lifting platform. An input shaft is fixedly connected to the top of the lead screw. The top of the input shaft passes through the operating box and is fixedly connected to a main operating panel. A moving column is fixedly connected to the lifting platform. The bottom of the moving column passes through the operating box and is fixedly connected to an upper chuck. The upper chuck corresponds to the lower chuck.

[0006] A gear is fixedly connected to the input shaft in the external area. A motion shaft is rotatably connected to the operation box. The top end of the motion shaft is located in the external area and is fixedly connected to a pawl. The pawl can rotate to abut against the gear teeth. The bottom end of the motion shaft is located inside the operation box and is fixedly connected to a worm gear. A worm is rotatably connected inside the operation box. The worm meshes with the worm gear. One end of the worm extends out of the operation box and is fixedly connected to a secondary operation panel.

[0007] In the above technical solution, two sets of sliding columns are fixedly connected inside the operation box, and the lifting platform is slidably connected to the sliding columns.

[0008] In the above technical solution, the top surface of the control box is fixedly connected with the main control panel, and the rotation direction mark A is fixedly connected to it;

[0009] The side of the control box is fixedly connected to the auxiliary control panel with a rotation direction indicator B.

[0010] In the above technical solution, the bottom end of the moving column is fixedly connected to a mounting plate, and the upper clamp is fixedly connected to the mounting plate by bolts;

[0011] The lower chuck is fixedly connected to the fixture table by bolts.

[0012] In the above technical solution, the fixture table is provided with a fixing part, and the fixing part is provided with a fixing hole.

[0013] The beneficial effects of this utility model are as follows: A large-section conductor can be placed on the lower chuck. Then, by rotating the main control panel, the lead screw rotates, which causes the lifting platform to drive the upper chuck to descend rapidly until the upper and lower chucks clamp the large-section conductor. Then, by rotating the secondary control panel, the worm gear drives the worm wheel to rotate, which in turn drives the pawl to rotate. The pawl abuts against the gear teeth. When the secondary control panel is rotated further, the pawl can move the gear to make a slight rotation, which allows the upper chuck to descend slightly, thereby increasing the clamping force on the large-section conductor and making the conductor testing more accurate. Furthermore, the self-locking effect of the worm gear and worm wheel prevents the gear from driving the pawl, making the clamping of the conductor more stable and avoiding loosening. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the control box in this utility model;

[0016] Figure 3 for Figure 2 Detailed structural diagram of part a;

[0017] Figure 4 for Figure 2 Detailed structural diagram of part b in the middle.

[0018] In the diagram: 1. Fixture table, 2. Upper chuck, 3. Lower chuck, 4. Control box, 5. Fixed part, 6. Sliding column, 7. Lifting platform, 8. Lead screw, 9. Input shaft, 10. Main control panel, 11. Motion column, 12. Mounting plate, 13. Gear, 14. Motion shaft, 15. Paw, 16. Worm gear, 17. Worm, 18. Secondary control panel, 19. Rotation direction indicator A, 20. Rotation direction indicator B. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-4 A fixture for testing the resistance of a large cross-section conductor includes a fixture platform 1, an upper chuck 2, a lower chuck 3, and an operation box 4. The lower chuck 3 is fixedly connected to the top surface of the fixture platform 1 by bolts, and the operation box 4 is also fixedly connected to the fixture platform 1 by a connecting frame. A fixing part 5 is also provided on the fixture platform 1, and the fixing part 5 is provided with fixing holes so that the fixture platform 1 can be fixedly installed on the machine platform.

[0021] Furthermore, two sets of sliding mains are fixedly connected inside the control box 4, and a lifting platform 7 is slidably connected to the sliding column 6. A lead screw 8 is threadedly connected to the lifting platform 7, and an input shaft 9 is fixedly connected to the top of the lead screw 8. The top of the input shaft 9 passes through the control box 4 and is fixedly connected to the main control panel 10. In addition, a moving column 11 is fixedly connected to the lifting platform 7, and the bottom end of the moving column 11 passes through the control box 4 and is fixedly connected to the upper chuck 2. Specifically, the bottom end of the moving column 11 is fixedly connected to the mounting plate 12, and the upper chuck 2 is fixedly connected to the mounting plate 12 by bolts. The upper chuck 2 corresponds to the lower chuck 3.

[0022] When it is necessary to clamp the conductor, the conductor can be placed on the lower clamp 3, and then the main operating panel 10 can be rotated to make the lead screw 8 rotate. In this way, the lifting platform 7 can drive the upper clamp 2 to descend, and the conductor can be clamped by the upper clamp 2 and the lower clamp 3.

[0023] Furthermore, a gear 13 is fixedly connected to the input shaft 9 in the external area, while a motion shaft 14 is rotatably connected to the operation box 4. The top end of the motion shaft 14 is located in the external area and is fixedly connected to a pawl 15. The bottom end of the motion shaft 14 is located inside the operation box 4 and is fixedly connected to a worm gear 16. A worm 17 is rotatably connected inside the operation box 4. The worm 17 meshes with the worm gear 16. One end of the worm 17 extends out of the operation box 4 and is fixedly connected to a secondary operation disk 18. The secondary operation disk 18 can drive the worm 17 to rotate. Then, the worm 17 drives the worm gear 16 to rotate. When the worm gear 16 rotates, the motion shaft 14 and the pawl 15 can rotate. In this way, the pawl 15 can rotatably abut against the teeth of the gear 13.

[0024] After the upper chuck 2 and lower chuck 3 clamp the conductor, rotating the auxiliary operating disk 18 causes the pawl 15 to move the gear 13, causing the gear 13 to rotate slightly, which in turn causes the lead screw 8 to rotate slightly, ultimately causing the upper chuck 2 to press down, thereby increasing the clamping force on the conductor. Furthermore, by utilizing the self-locking characteristics of the worm gear 17 and worm wheel 16, the gear 13 cannot drive the pawl 15 to rotate, thus preventing the gear 13 and the input shaft 9 from rotating on their own, making the clamping of the conductor more stable and preventing reverse loosening.

[0025] Finally, for ease of operation, a rotation direction indicator A19 is fixedly connected to the top surface of the control box 4 in conjunction with the main control panel 10. Similarly, a rotation direction indicator B20 is fixedly connected to the side surface of the control box 4 in conjunction with the auxiliary control panel 18.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for testing the resistance of a large cross-section conductor, comprising a fixture platform (1), an upper clamp (2), a lower clamp (3), and an operating box (4), characterized in that: The lower clamp (3) is fixedly connected to the top surface of the clamping table (1), and the operating box (4) is fixedly connected to the clamping table (1) through the connecting frame. The operating box (4) is slidably connected to a lifting platform (7), and a lead screw (8) is threaded onto the lifting platform (7). An input shaft (9) is fixedly connected to the top of the lead screw (8). The top of the input shaft (9) passes through the operating box (4) and is fixedly connected to a main operating panel (10). A moving column (11) is fixedly connected to the lifting platform (7). The bottom end of the moving column (11) passes through the operating box (4) and is fixedly connected to an upper chuck (2). The upper chuck (2) corresponds to the lower chuck (3). The input shaft (9) is fixedly connected to a gear (13) in the area outside the machine. The operating box (4) is rotatably connected to a motion shaft (14). The top of the motion shaft (14) is located outside the machine and is fixedly connected to a pawl (15). The pawl (15) can rotate to abut against the teeth of the gear (13). The bottom of the motion shaft (14) is located inside the operating box (4) and is fixedly connected to a worm gear (16). The operating box (4) is rotatably connected to a worm (17). The worm (17) meshes with the worm gear (16). One end of the worm (17) extends out of the operating box (4) and is fixedly connected to a secondary operating disc (18).

2. The fixture for testing the resistance of a large cross-section conductor according to claim 1, characterized in that: The operation box (4) is fixedly connected to two sets of sliding columns (6), and the lifting platform (7) is slidably connected to the sliding columns (6).

3. The fixture for testing the resistance of a large cross-section conductor according to claim 1, characterized in that: The top surface of the control box (4) is fixedly connected to the main control panel (10) with a rotation direction mark A (19). The side of the control box (4) is fixedly connected with the auxiliary control panel (18) and has a rotation direction indicator B (20).

4. The fixture for testing the resistance of a large cross-section conductor according to claim 1, characterized in that: The bottom end of the moving column (11) is fixedly connected to the mounting plate (12), and the upper clamp (2) is fixedly connected to the mounting plate (12) by bolts; The lower chuck (3) is fixedly connected to the fixture table (1) by bolts.

5. A fixture for testing the resistance of a large cross-section conductor according to claim 1, characterized in that: The fixture table (1) is provided with a fixing part (5), and the fixing part (5) is provided with a fixing hole.

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