Clamp for failure load test of electric power fitting

Abstract

The utility model relates to the technical field of clamps for tests, and discloses a clamp for a failure load test of an electric power fitting, which comprises a connecting seat and an upper connecting seat, and a vertical column is mounted in the center of the top of the upper connecting seat; the lower conical plate is connected with the stand column in a sleeving mode, an upper conical plate is installed at the top end of the lower conical plate, and limiting side plates are rotationally connected to the centers of the two sides of the stand column; and outer covers are installed at the ends of the pull rods, side cone plates are additionally arranged on the two sides of an inner cavity of each outer cover, guide rods are installed on the outer sides of the side cone plates, reset springs are arranged on the surfaces of the guide rods in a sleeving mode, and the ends of the guide rods penetrate through the inner walls of the outer covers and extend outwards. According to the clamp for the failure load test of the electric power fitting, the outer housing descends, and the side cone plate passes through the upper cone plate to drive the guide rod to move outwards. The outer cover shell descends, the side conical plate drives the lower conical plate to ascend to be attached to the upper conical plate, then the lower conical plate and the upper conical plate are separated, and quick disassembly and quick assembly can be carried out in the mode.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to a fixture for the breaking load test of electric power fittings. Background Technique

[0002] A fixture refers to a device used in the mechanical manufacturing process to fix the processing object, make it occupy the correct position, and accept construction or detection. A test fixture is a device used to clamp and fix test samples, and its main purpose is to maintain the stability of the test samples during the test to ensure the accuracy of the test results. Test fixtures usually consist of a fixture body, a fixture base, and a movable part of the fixture, and can be adjusted according to the different shapes and sizes of the test samples. In the breaking load test of electric power fittings, the fixture is used to fix the electric power fittings so as to apply the required load during the test and measure their deformation and failure conditions.

[0003] Common fixtures for the breaking load test of electric power fittings usually consist of structures such as a fixture body, positioning elements, clamping devices, load transfer elements, and adjustment mechanisms. The electric power fittings are clamped and fixed and adjusted through the positioning elements, clamping devices, and adjustment mechanisms, and the load transfer elements directly bear the load applied by the testing machine. This is the common structure and usage method of fixtures for the breaking load test of electric power fittings. For traditional fixtures for the breaking load test of electric power fittings, to ensure the connectivity of the fixture structure, some adjacent structures of the fixture are connected by welding. Although the stability of the connection can be ensured, it is impossible to replace some structures of the fixture according to different test situations. For example, in the patent No. CN209858336U, a special fixture for the breaking load test of electric power fittings can be configured with appropriate lower assembly rods, lower pull rods, and lower positioning blocks according to the wire sizes applicable to the measured wire clamps, connect the wire clamps to the upper assembly block and the lower assembly rod respectively in the use state, and then connect the upper pull rod and the lower pull rod to the chucks of the tensile machine respectively. However, in this way, since the lower assembly rod, the lower pull rod, and the lower positioning block are all connected by threads, during the experiment, due to the unstable thread connection method, separation and dropping are likely to occur, and at the same time, it is not convenient for quick disassembly and assembly. Therefore, a fixture for the breaking load test of electric power fittings is proposed. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a fixture for the breaking load test of electric power fittings to solve the technical problems that the above-mentioned thread connection method is unstable and not convenient for quick disassembly and assembly.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A fixture for the breaking load test of electric power fittings, comprising:

[0006] Connecting seat, an upper connecting seat arranged at the center of the top of the connecting seat, and a column is installed at the center of the top of the upper connecting seat;

[0007] Lower conical plate, arranged at the lower part of the column and sleeved and connected, and an upper conical plate is installed at the top of the column. Limit side plates are rotatably connected to the centers of both sides of the column;

[0008] Pull rod, arranged directly above the top of the column, and outer casing is installed at the ends of the pull rod. Side conical plates are added to both sides of the inner cavity of the outer casing, guide rods are installed on the outer sides of the side conical plates, return springs are sleeved on the surfaces of the guide rods, and the ends of the guide rods penetrate through the inner walls of the outer casing and extend outwards. After the outer casing of the pull rod is lowered along the surface of the column, when the side conical plate passes through the upper conical plate, it drives the guide rod to move outwards and compresses the return spring. When the side conical plate passes through the upper conical plate, it is reset under the action of the return spring, and the bottom of the outer casing fits with the top of the limit side plate, so that the side conical plate is clamped between the lower conical plate and the upper conical plate. When disassembling, first rotate the limit side plate to lower the outer casing, and after the side conical plate is clamped outside the lower conical plate, drive the lower conical plate to rise and fit with the upper conical plate, so that the side conical plate passes through the lower conical plate and the upper conical plate in sequence to separate. On the one hand, it is convenient for quick disassembly and assembly operations between the pull rod and the connecting seat; on the other hand, when installing between the pull rod and the connecting seat, the outer casing can be limited by the limit side plate to prevent the pull rod and the connecting seat from self-separating during use.

[0009] Preferably, positioning grooves are longitudinally opened at the centers of both sides of the connecting seat, and arc-shaped sliding grooves are opened at the front and rear ends of the upper part outside the positioning grooves. The connecting seat can make the corresponding structure move through the positioning grooves and arc-shaped sliding grooves.

[0010] Preferably, sliding blocks are slidably connected to the inner cavities of the arc-shaped sliding grooves, and limit conical plates are transversely installed at the outer ends of the sliding blocks. When the limit conical plates are pressed, the sliding blocks can slide along the arc-shaped sliding grooves.

[0011] Preferably, arc-shaped springs are added to the outer sides of the arc-shaped sliding grooves, and the two ends of the arc-shaped springs are respectively connected between the corresponding parts of the connecting seat housing and the limit conical plates. When the limit conical plates slide along the arc-shaped sliding grooves, the arc-shaped springs can be compressed. When the pressure on the limit conical plates ends, the limit conical plates can be reset under the action of the arc-shaped springs and the sliding blocks.

[0012] Preferably, clamping plates are added to both sides of the inner cavity of the connecting seat, and positioning plates are longitudinally installed at the center positions of the outer sides of the clamping plates. The clamping plates on the connecting seat can clamp and fix the electrical fittings, and at the same time, the clamping plates can be installed on the connecting seat by the positioning plates.

[0013] Preferably, the positioning plate corresponds to the positioning groove, and both the positioning plate and the positioning groove are designed in a T shape. Limiting plates are installed on the outer tops of the positioning plates, corresponding to the limiting cone plates, and connecting holes are formed on the outer sides of the positioning plates. After inserting the positioning plates of the clamping plates into the positioning grooves of the connecting seats, the limiting plates rise with the positioning plates and squeeze the corresponding two groups of limiting cone plates outwards. After the positioning plates rise to the tops of the limiting cone plates, the limiting cone plates are reset under the action of the arc-shaped springs and the sliding blocks and fit tightly with the bottoms of the positioning plates. On the one hand, it is convenient to replace the clamping plates on the connecting seats; on the other hand, within a certain range, the clamps can be replaced according to the shapes and sizes of different electric power fittings, so as to ensure the fixation of the electric power fittings and avoid affecting the occurrence of the breaking load test phenomenon.

[0014] Compared with the prior art, the utility model provides a clamp for the breaking load test of electric power fittings, and has the following beneficial effects:

[0015] For the clamp for the breaking load test of electric power fittings, after the outer housing of the pull rod descends along the surface of the column, when the side cone plate passes through the upper cone plate, it drives the guide rod to move outwards and squeezes the return spring. When the side cone plate passes through the upper cone plate and is reset under the action of the return spring, and the bottom of the outer housing fits with the top of the limiting side plate, so that the side cone plate is clamped between the lower cone plate and the upper cone plate. When disassembling, first rotate the limiting side plate to make the outer housing descend, and after the side cone plate is clamped outside the lower cone plate, drive the lower cone plate to rise and fit with the upper cone plate, so that the side cone plate passes through the lower cone plate and the upper cone plate in sequence to separate. By adopting this method, on the one hand, it is convenient for quick disassembly and assembly between the pull rod and the connecting seat; on the other hand, when installing between the pull rod and the connecting seat, the outer housing can be limited by the limiting side plate to avoid self-separation between the pull rod and the connecting seat during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the outer housing of the utility model;

[0018] Figure 3 It is a schematic diagram of the connecting seat and its connecting structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the clamping plate and its connecting structure of the utility model.

[0020] In the figure: 1, connecting seat; 2, upper connecting seat; 3, vertical column; 4, lower conical plate; 5, upper conical plate; 6, limiting side plate; 7, pull rod; 8, outer housing; 9, side conical plate; 10, guide rod; 11, return spring; 12, positioning groove; 13, arc-shaped sliding groove; 14, sliding block; 15, arc-shaped spring; 16, limiting conical plate; 17, clamping plate; 18, positioning plate; 19, limiting plate. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] The present invention provides a technical solution, a fixture for a breaking load test of electric power fittings, including: Please refer to Figure 1 , a connecting seat 1, and an upper connecting seat 2 provided at the center of the top of the connecting seat 1, and a vertical column 3 is installed at the center of the top of the upper connecting seat 2;

[0023] Please refer to Figure 3 , a lower conical plate 4, provided at the lower part of the vertical column 3, sleeved and connected, and an upper conical plate 5 is installed at the top of the vertical column 3, and limiting side plates 6 are rotatably connected to the centers on both sides of the vertical column 3;

[0024] Please refer to Figure 2 , a pull rod 7, provided directly above the top of the vertical column 3, and outer housings 8 are installed at the ends of the pull rod 7. Side conical plates 9 are added to both sides of the inner cavity of the outer housing 8, and guide rods 10 are installed on the outer sides of the side conical plates 9, and return springs 11 are sleeved on the surfaces of the guide rods 10, and the ends of the guide rods 10 penetrate through the inner wall of the outer housing 8 and extend outward. After the outer housing 8 of the pull rod 7 is lowered along the surface of the vertical column 3, when the side conical plate 9 passes through the upper conical plate 5, it drives the guide rod 10 to move outward and compresses the return spring 11. When the side conical plate 9 passes through the upper conical plate 5, it is reset under the action of the return spring 11, and the bottom of the outer housing 8 fits with the top of the limiting side plate 6, so that the side conical plate 9 is clamped between the lower conical plate 4 and the upper conical plate 5. When disassembling, first rotate the limiting side plate 6 to lower the outer housing 8, and when the side conical plate 9 is clamped outside the lower conical plate 4, drive the lower conical plate 4 to rise and fit with the upper conical plate 5, so that the side conical plate 9 passes through the lower conical plate 4 and the upper conical plate 5 in turn to separate. On the one hand, it is convenient for quick disassembly and assembly operations between the pull rod 7 and the connecting seat 1; on the other hand, when the pull rod 7 and the connecting seat 1 are installed, the outer housing 8 can be limited by the limiting side plate 6 to prevent the pull rod 7 and the connecting seat 1 from self-separating during use.

[0025] Please refer to Figure 3 Figure 3 , positioning grooves 12 are longitudinally provided at the central positions on both sides of the connecting seat 1, and arc-shaped sliding grooves 13 are provided at the front and rear ends of the upper part outside the positioning grooves 12. The connecting seat 1 can move the corresponding structure through the positioning grooves 12 and the arc-shaped sliding grooves 13. Slide blocks 14 are slidably connected to the inner cavities of the arc-shaped sliding grooves 13, and limiting cone plates 16 are transversely installed at the outer ends of the slide blocks 14. When the limiting cone plates 16 are pressed, they can slide along the arc-shaped sliding grooves 13 through the slide blocks 14. Arc-shaped springs 15 are additionally provided on the outer sides of the arc-shaped sliding grooves 13, and both ends of the arc-shaped springs 15 are respectively connected between the outer shell of the connecting seat 1 and the corresponding positions of the limiting cone plates 16. When the limiting cone plates 16 slide along the arc-shaped sliding grooves 13, the arc-shaped springs 15 can be compressed. After the limiting cone plates 16 are pressed, the limiting cone plates 16 can be reset under the action of the arc-shaped springs 15 and the slide blocks 14.

[0026] Please refer to Figure 4 Figure 4 , clamping plates 17 are additionally provided on both sides of the inner cavity of the connecting seat 1, and positioning plates 18 are longitudinally installed at the central positions on the outer sides of the clamping plates 17. The clamping plates 17 on the connecting seat 1 can be used to clamp and fix the electric power fittings, and at the same time, the clamping plates 17 can be installed on the connecting seat 1 by the positioning plates 18. The positioning plates 18 correspond to the positioning grooves 12, and both the positioning plates 18 and the positioning grooves 12 are designed in a T shape. Limiting plates 19 are installed at the top of the outer sides of the positioning plates 18 and correspond to the limiting cone plates 16, and connecting holes are provided on the outer sides of the positioning plates 18. After inserting the positioning plates 18 of the clamping plates 17 into the positioning grooves 12 of the connecting seat 1, the limiting plates 19 rise with the positioning plates 18 and squeeze the corresponding two groups of limiting cone plates 16 outward. After the positioning plates 18 rise to the tops of the limiting cone plates 16, the limiting cone plates 16 are reset under the action of the arc-shaped springs 15 and the slide blocks 14 and are closely attached to the bottoms of the positioning plates 18. On the one hand, it is convenient to replace the clamping plates 17 on the connecting seat 1; on the other hand, within a certain range, the clamps can be replaced according to the shapes and sizes of different electric power fittings, etc., so as to firmly fix the electric power fittings and avoid the occurrence of phenomena that affect the breaking load test.

[0027] This solution: After the outer housing 8 of the pull rod 7 is lowered along the surface of the column 3, when the side cone plate 9 passes through the upper cone plate 5, it drives the guide rod 10 to move outward and squeezes the return spring 11. When the side cone plate 9 passes through the upper cone plate 5, it is reset under the action of the return spring 11, and the bottom of the outer housing 8 fits with the top of the limit side plate 6, so that the side cone plate 9 is clamped between the lower cone plate 4 and the upper cone plate 5. When disassembling, first rotate the limit side plate 6 to lower the outer housing 8, and after the side cone plate 9 is clamped outside the lower cone plate 4, drive the lower cone plate 4 to rise and fit with the upper cone plate 5, so that the side cone plate 9 passes through the lower cone plate 4 and the upper cone plate 5 in sequence and separates. After the positioning plate 18 of the clamping plate 17 is inserted into the positioning groove 12 of the connecting seat 1, the limit plate 19 rises with the positioning plate 18 and squeezes the corresponding two groups of limit cone plates 16 outward. The limit cone plates 16 can drive the arc spring 15 to slide along the arc chute 13 through the sliding block 14. When the positioning plate 18 rises to the top of the limit cone plate 16, the limit cone plate 16 is reset under the action of the arc spring 15 and the sliding block 14 and fits tightly with the bottom of the positioning plate 18.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for the destructive load test of electrical hardware, characterized in that, Comprising: A connecting seat (1), and an upper connecting seat (2) provided at the center of the top of the connecting seat (1), and a column (3) is installed at the center of the top of the upper connecting seat (2); A lower conical plate (4), provided at the lower part of the column (3), sleeved and connected, and an upper conical plate (5) is installed at the top end of the column (3), and limiting side plates (6) are rotatably connected to the centers on both sides of the column (3); Tension rods (7), provided directly above the top of the column (3), and outer housing shells (8) are installed at the ends of the tension rods (7), side conical plates (9) are added on both sides of the inner cavity of the outer housing shells (8), guide rods (10) are installed on the outer sides of the side conical plates (9), return springs (11) are sleeved on the surfaces of the guide rods (10), and the ends of the guide rods (10) penetrate through the inner walls of the outer housing shells (8) and extend outwards.

2. The fixture for the breaking load test of electrical hardware according to claim 1, characterized in that: Positioning grooves (12) are longitudinally opened at the centers on both sides of the connecting seat (1), and arc-shaped sliding grooves (13) are opened at the front and rear ends of the upper part outside the positioning grooves (12).

3. The fixture for the breaking load test of electrical fittings according to claim 2, characterized in that: Sliding blocks (14) are slidably connected to the inner cavities of the arc-shaped sliding grooves (13), and limiting conical plates (16) are horizontally installed at the outer ends of the sliding blocks (14).

4. The fixture for the breaking load test of electric power fittings according to claim 3, characterized in that: Arc-shaped springs (15) are added outside the arc-shaped sliding grooves (13), and the two ends of the arc-shaped springs (15) are respectively connected between the outer shell of the connecting seat (1) and the corresponding parts of the limiting conical plates (16).

5. A fixture for the breaking load test of electric power fittings according to claim 4, characterized in that: Clamping plates (17) are added on both sides of the inner cavity of the connecting seat (1), and positioning plates (18) are longitudinally installed at the center positions of the outer sides of the clamping plates (17).

6. The fixture for the breaking load test of electrical hardware according to claim 5, wherein: The positioning plates (18) correspond to the positioning grooves (12), and both the positioning plates (18) and the positioning grooves (12) are designed in a T shape. Limiting plates (19) are installed at the top of the outer sides of the positioning plates (18), corresponding to the limiting conical plates (16), and connecting holes are opened on the outer sides of the positioning plates (18).

Images