Electric wire repeated bending strength detection equipment

Abstract

The utility model discloses an electric wire repeated bending strength detection device, and relates to the technical field of basic electrical elements. Electric wire repeated bending strength detection equipment comprises a base and two supporting seats, the two supporting seats are each provided with three limiting devices, each limiting device comprises a clamping frame and a rotating threaded rod, the outer wall of each supporting seat is provided with three T-shaped block grooves, the inner walls of the two sides of each T-shaped block groove are each provided with a first limiting block groove, and each first limiting block groove is provided with a second limiting block groove. In the limiting device, pushing blocks are pushed to move oppositely to drive limiting blocks to move oppositely, meanwhile, reset springs are extruded, then the limiting blocks move oppositely to enable the outer walls of the other ends of the limiting blocks to be disengaged from the interiors of first limiting block grooves, then the clamping frame is pulled to be taken down from the supporting base, and therefore the clamping frame is easy and rapid to disassemble, and the working efficiency is improved. The situation that a worker needs to disassemble the whole wire clamping assembly and then disassemble the clamping frame is avoided, and the maintenance and overhaul efficiency of the clamping frame is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of basic electrical components technology, and in particular to a device for testing the repeated bending strength of electrical wires. Background Technology

[0002] With the development of economic construction, various construction projects have sprung up in large numbers. The quality of these projects is closely related to people's lives and property safety. Chinese utility model patent, authorized announcement number "CN214952570U", discloses a bending device for repeated bending tests of metal wire, relating to the field of building material performance testing machines. This utility model includes a base; two end-bending components that clamp the ends of the wire and move up and down reciprocally, mounted opposite each other on the upper surface of the base; a middle clamping component for clamping the middle part of the wire, installed and fixed on the upper surface of the base between the two end-bending components; a stepper motor with dual output shafts mounted at one end of the upper surface of the base; and the stepper motors are respectively connected to the end-bending components via a sprocket and chain assembly. This utility model uses the two end-bending components to clamp one end of the metal wire, performing reciprocating bending under the drive of the stepper motor and sprocket and chain assembly. Multiple clamping tubes are installed on the wire clamping strip to increase the sample size for a single test; the middle clamping component clamps the middle part of the wire, and comparing the two ends of the same wire improves the accuracy of the test data.

[0003] The above technical solution uses two end bending components to clamp one end of the metal wire, and performs reciprocating bending under the drive of a stepper motor and sprocket chain assembly. The two ends of the wire run in opposite directions. Multiple clamping tubes are installed on the clamping busbar, which can perform synchronous testing on multiple cables. However, the above technical solution still has certain drawbacks. For example, the above equipment clamps the wire through clamping tubes, but after long-term use, when it is necessary to maintain and repair the clamping tubes, the staff needs to use special tools to disassemble the entire clamping assembly before maintaining and repairing the clamping tubes. This increases the workload of the staff and reduces the practicality of the equipment. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a wire repeated bending strength testing device. This device can solve the problem that the wire clamping tube is used to clamp the wire. However, when the wire clamping tube is used for a long time, the staff needs to use special tools to disassemble the entire wire clamping assembly before maintaining and repairing the wire clamping tube. This increases the workload of the staff and reduces the practicality of the device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wire repeated bending strength testing device, comprising a base and two support seats, each of which is provided with three limiting devices;

[0006] The limiting device includes a clamping frame and a rotating threaded rod. The outer wall of the support base has three T-shaped block slots. The inner walls on both sides of the three T-shaped block slots are provided with first limiting block slots. The outer walls on both sides of the lower T-shaped block of the clamping frame are provided with second limiting block slots. Limiting blocks are slidably connected inside the two second limiting block slots. Two clamping blocks are provided inside the clamping frame. The rotating threaded rod is rotatably connected to the upper surface of the clamping frame.

[0007] The lower end of the clamping frame has a push block groove on the outer wall of the T-shaped block. Two push blocks are slidably connected inside the push block groove. Three return springs are installed inside the push block groove. Rubber limit blocks are installed inside the push block groove. All three limit devices are installed on the support base. The limit devices on the two support bases work together.

[0008] Preferably, the outer wall of the lower T-shaped block of the clamping frame is slidably connected to the interior of the corresponding T-shaped block groove, and the ends of the two limiting blocks near the first limiting block groove are slidably extended into the interior of the T-shaped block groove and are slidably connected to the interior of the corresponding first limiting block groove.

[0009] The lower clamping block is fixedly connected to the inner wall of the lower end of the clamping frame.

[0010] Preferably, one end of the rotating threaded rod near the clamping block extends into the interior of the clamping frame and is rotatably connected to the upper surface of the upper clamping block;

[0011] Among them, the two sliding rods that are slidably connected to the upper surface of the clamping frame extend into the interior of the clamping frame at the end near the clamping block and are fixedly connected to the upper surface of the upper clamping block.

[0012] Preferably, the interiors of the two second limiting block slots are in communication with the interiors of the push block slots, and the ends of the two push blocks near the limiting blocks slide into the interiors of the second limiting block slots and are respectively fixedly connected to the outer walls of the corresponding limiting blocks.

[0013] The three return springs are fixedly connected at both ends to the outer wall of one side of the corresponding push block, and the outer walls of the two sides of the rubber limit block are in contact with the outer wall of the corresponding push block.

[0014] Preferably, the two support seats are slidably connected to the outer walls of the four support columns at the upper end of the base on both sides, and two hydraulic telescopic rods are installed on the upper surface of the base;

[0015] The output end of the hydraulic telescopic rod is fixedly connected to the lower surface of the corresponding support base, and three support columns are fixedly connected to the upper surface of the base. Support blocks are slidably connected inside the three support columns.

[0016] Preferably, each of the three support blocks has two fixing bolts threaded to its outer walls on both sides, and the twelve fixing bolts are arranged in groups of four.

[0017] Among them, the ends of the three sets of fixing bolts near the support columns are all threaded to the inner side of the outer wall on both sides of the support block and respectively contact the outer wall of the corresponding support column. The positions of the three support columns are opposite to the positions of the corresponding limiting devices.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This wire bending strength testing device uses a limit device to push the push block to move in opposite directions, which in turn moves the limit block in opposite directions and squeezes the reset spring. Then, the limit block moves in opposite directions so that the outer wall of its other end disengages from the inside of the first limit block groove. Then, the clamping frame can be pulled to remove it from the support base. This makes the disassembly of the clamping frame simple and quick, avoiding the need for workers to disassemble the entire wire clamping assembly and then disassemble the clamping frame, effectively improving the maintenance and repair efficiency of the clamping frame. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the external structure of the limiting block of this utility model;

[0023] Figure 3 This is a schematic diagram of the external structure of the support base of this utility model;

[0024] Figure 4 This utility model Figure 2 A structural schematic diagram of the enlarged view at point A in the middle.

[0025] Reference numerals in the attached drawings: 1. Base; 2. T-shaped block groove; 3. Push block; 4. Rubber limiting block; 5. Push block groove; 6. Support block; 7. Clamping block; 8. Support seat; 9. Clamping frame; 10. Hydraulic telescopic rod; 11. Rotating threaded rod; 12. Support column; 13. Fixing bolt; 14. First limiting block groove; 15. Second limiting block groove; 16. Limiting block; 17. Return spring. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Please see Figure 1-4 This utility model provides a technical solution: a wire repeated bending strength testing device, including a base 1 and two support seats 8;

[0031] Each of the two support bases 8 is equipped with three limit devices;

[0032] The limiting device includes a clamping frame 9 and a rotating threaded rod 11. The outer wall of the support base 8 has three T-shaped block slots 2. The outer wall of the lower T-shaped block of the clamping frame 9 is slidably connected to the interior of the corresponding T-shaped block slot 2. The inner walls on both sides of each of the three T-shaped block slots 2 have first limiting block slots 14. The outer walls on both sides of the lower T-shaped block of the clamping frame 9 have second limiting block slots 15. Limiting blocks 16 are slidably connected to the interior of each of the two second limiting block slots 15. The ends of the two limiting blocks 16 closest to the first limiting block slots 14 extend slidably into the interior of the T-shaped block slots 2 and are slidably connected to the interior of the corresponding first limiting block slots 14. Two clamping blocks 7 are provided inside the clamping frame 9. The lower clamping block 7 is fixedly connected to the inner wall of the lower end of the clamping frame 9. The rotating threaded rod 11 is rotatably connected to the upper surface of the clamping frame 9. A push block slot 5 is provided on the outer wall of the lower T-shaped block of the clamping frame 9. Two push blocks 3 are slidably connected inside the push block slot 5. One end of the threaded rod 11 near the clamping block 7 extends into the interior of the clamping frame 9 and is rotatably connected to the upper surface of the upper clamping block 7. The two sliding rods slidably connected to the upper surface of the clamping frame 9 extend into the interior of the clamping frame 9 near the clamping block 7 and are fixedly connected to the upper surface of the upper clamping block 7. The interiors of the two second limiting block grooves 15 are connected to the interiors of the push block grooves 5. The ends of the two push blocks 3 near the limiting block 16 extend into the interiors of the second limiting block grooves 15 and are fixedly connected to the outer walls of the corresponding limiting blocks 16. The interior of the push block groove 5 is provided with three return springs 17, the two ends of which are fixedly connected to the outer walls of the corresponding push blocks 3. The interior of the push block groove 5 is provided with rubber limiting blocks 4, the two outer walls of which are in contact with the outer walls of the corresponding push blocks 3. The three limiting devices are all set on the support base 8, and the limiting devices on the two support bases 8 are used in conjunction.

[0033] Among them, the two support seats 8 are slidably connected to the outer walls of the four support columns at the upper end of the base 1 on both sides. Two hydraulic telescopic rods 10 are installed on the upper surface of the base 1. The output ends of the hydraulic telescopic rods 10 are fixedly connected to the lower surface of the corresponding support seats 8. Three support columns 12 are fixedly connected to the upper surface of the base 1. Support blocks 6 are slidably connected inside the three support columns 12. Two fixing bolts 13 are threadedly connected to the outer walls on both sides of the three support blocks 6. The twelve fixing bolts 13 are in groups of four. The ends of the three groups of fixing bolts 13 near the support column 12 are threaded to the inner walls on both sides of the support block 6 and respectively contact the outer walls of the corresponding support columns 12. The positions of the three support columns 12 are opposite to the positions of the corresponding limiting devices.

[0034] Furthermore, when using the device, it is started by connecting to an external power source. According to the specifications of the wire to be tested, the fixing bolts 13 on both sides of the support block 6 are loosened. After adjusting the support block 6 to a suitable height within the support column 12, the bolts are tightened to fix it. The wire is laid flat on the support block 6, and both ends are placed into the clamping brackets 9 on the two support seats 8, so that the wire is in the state to be tested. Then, the threaded rod 11 is rotated clockwise. Through the threaded transmission, the upper clamping block 7 moves downward along the slide rod and cooperates with the lower clamping block 7 to clamp the wire. Then, the output end of the hydraulic telescopic rod 10 extends to push the support seat 8 upward along the support column of the base 1, tightening the wire. Then, the hydraulic telescopic rod 10 is controlled to perform reciprocating telescopic movement, and the support seat 8 moves up and down accordingly, so that the wire is between the two support seats 8. Repeated bending provides stable support for the middle part of the wire, ensuring that the wire completes the bending test within the specified area. When the preset number of tests is reached or the wire is broken or damaged, the hydraulic telescopic rod 10 is stopped, and the threaded rod 11 is rotated counterclockwise. Under the elastic force of the spring return spring 17, the upper clamping block 7 moves upward along the slide rod to release the wire. Then, when it is necessary to remove the clamping frame 9, pull the handle of the rubber limit block 4 to remove it from the inside of the push block groove 5. Then push the push block 3 to move in opposite directions, causing the limit block 16 to move in opposite directions while squeezing the return spring 17. Then the limit block 16 moves in opposite directions so that the outer wall of its other end disengages from the inside of the first limit block groove 14. Then pull the clamping frame 9 to remove it from the support base 8.

[0035] By pushing the pusher block 3 in the limiting device to move towards each other, the limiting block 16 moves towards each other and simultaneously squeezes the reset spring 17. Then, the limiting block 16 moves towards each other so that the outer wall of its other end disengages from the inside of the first limiting block groove 14. Then, the clamping frame 9 can be pulled to remove it from the support base 8. This makes disassembling the clamping frame 9 simple and quick, avoiding the need for workers to disassemble the entire wire clamping assembly before disassembling the clamping frame 9, effectively improving the maintenance and repair efficiency of the clamping frame 9.

[0036] Structural Description: Base 1: As the foundation of the equipment, four support columns are fixed on its upper surface to provide sliding rails for the support base 8. Two hydraulic telescopic rods 10 and three support columns 12 are installed at the same time, which are responsible for driving the support base 8 to rise and fall and supporting the power cables, respectively, bearing and integrating the various components of the equipment.

[0037] Support base 8: There are two in total, which are fitted on the four support columns of the base 1 on both sides and can slide vertically along the column. Three T-shaped block grooves 2 are opened on its outer wall for installing limit devices. The bottom is connected to the output end of the hydraulic telescopic rod 10, which can accurately adjust the height under hydraulic drive to realize position control during wire bending detection; Support column 12: Three are fixed to the upper surface of the base 1. They are hollow inside and provide sliding space for the support block 6. Their positions correspond one-to-one with the limit devices on the support base 8 to assist in supporting the wire and ensure the stability of the wire during the detection process;

[0038] Support block 6: It slides up and down inside the support column 12. Two fixing bolts 13 are provided on its two side walls. By turning the fixing bolts 13, the support block 6 can be locked at different heights of the support column 12 to adapt to the support requirements of different specifications of wires.

[0039] Clamping frame 9: The lower end is a T-shaped block, which is embedded in the T-shaped block groove 2 of the support base 8 and can slide laterally. Two clamping blocks 7 are set inside it to clamp the wire. The lower T-shaped block has a push block groove 5 with two push blocks 3 inside. The upper surface is provided with a rotating threaded rod 11 and two sliding rods to achieve clamping of the wire and self-limiting and fixing.

[0040] Rotating threaded rod 11: It is vertically rotatably connected to the upper surface of the clamping frame 9. The lower end thread extends into the clamping frame 9 and is rotatably connected to the upper clamping block 7. When rotating the threaded rod 11, the upper clamping block 7 is driven to move up and down along the slide rod through the thread transmission to complete the clamping or loosening of the wire.

[0041] Clamping block 7: It is divided into upper and lower parts. The lower clamping block 7 is fixed to the bottom of the clamping frame 9. The upper clamping block 7 is connected to the rotating threaded rod 11 and the sliding rod. Under the drive of the threaded rod, it works with the lower clamping block 7 to clamp the wire and provide a stable clamping force.

[0042] Push block 3: Located in the push block groove 5 of the T-shaped block at the lower end of the clamping frame 9, one end of which is connected to the limiting block 16. When the clamping frame 9 slides in the T-shaped block groove 2, the push block 3 moves synchronously, causing the limiting block 16 to engage or disengage from the first limiting block groove 14, thereby realizing the positioning and unlocking of the clamping frame 9.

[0043] Limiting block 16: A pair of blocks that slide in the second limiting block groove 15 and can extend one end to the first limiting block groove 14 of the T-shaped block groove 2. When the first limiting block groove 14 is inserted into the push block 3, the clamping frame 9 is restricted from sliding, ensuring that the position of the clamping frame 9 is fixed during the detection process after the wire is clamped.

[0044] Rubber limiting block 4: placed in the push block groove 5, sandwiched between two push blocks 3, to provide buffering and prevent hard collision of push blocks 3, while also assisting in limiting and enhancing the positioning stability of clamping frame 9;

[0045] Reset spring 17: Three springs are distributed in the push block groove 5, and the two ends are connected to the push block 3 respectively. When the push block 3 moves to compress the spring, it stores elastic potential energy. After the detection is completed, it releases the energy and pushes the push block 3 to reset.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A device for testing the repeated bending strength of electrical wires, comprising a base (1) and two support seats (8), characterized in that: Each of the two support bases (8) is provided with three limiting devices; The limiting device includes a clamping frame (9) and a rotating threaded rod (11). The outer wall of the support base (8) is provided with three T-shaped block grooves (2). The inner walls on both sides of the three T-shaped block grooves (2) are provided with first limiting block grooves (14). The outer walls on both sides of the lower end of the clamping frame (9) are provided with second limiting block grooves (15). The two second limiting block grooves (15) are slidably connected to limiting blocks (16). The clamping frame (9) is provided with two clamping blocks (7). The rotating threaded rod (11) is rotatably connected to the upper surface of the clamping frame (9). Among them, the lower end of the clamping frame (9) has a push block groove (5) on the outer wall of the T-shaped block. Two push blocks (3) are slidably connected inside the push block groove (5). Three reset springs (17) are installed inside the push block groove (5). A rubber limit block (4) is installed inside the push block groove (5). All three limit devices are installed on the support base (8). The limit devices on the two support bases (8) are used in conjunction.

2. The wire repeated bending strength testing device according to claim 1, characterized in that: The outer wall of the lower T-shaped block of the clamping frame (9) is slidably connected to the interior of the corresponding T-shaped block groove (2), and the ends of the two limiting blocks (16) near the first limiting block groove (14) are slidably extended into the interior of the T-shaped block groove (2) and are slidably connected to the interior of the corresponding first limiting block groove (14). The lower clamping block (7) is fixedly connected to the inner wall of the lower end of the clamping frame (9).

3. The wire repeated bending strength testing device according to claim 1, characterized in that: The rotating threaded rod (11) extends threadedly into the interior of the clamping frame (9) at one end near the clamping block (7) and is rotatably connected to the upper surface of the upper clamping block (7); Among them, the two sliding rods that are slidably connected to the upper surface of the clamping frame (9) extend into the interior of the clamping frame (9) near the clamping block (7) and are fixedly connected to the upper surface of the upper clamping block (7).

4. The wire repeated bending strength testing device according to claim 1, characterized in that: The interiors of the two second limiting block grooves (15) are connected to the interior of the push block groove (5). The ends of the two push blocks (3) near the limiting block (16) slide into the interior of the second limiting block groove (15) and are fixedly connected to the outer wall of the corresponding limiting block (16). Among them, the two ends of the three reset springs (17) are fixedly connected to the outer wall of one side of the corresponding push block (3), and the outer walls of the two sides of the rubber limit block (4) are in contact with the outer wall of the corresponding push block (3).

5. The wire repeated bending strength testing device according to claim 1, characterized in that: The two support seats (8) are slidably connected to the outer walls of the four support columns at the upper end of the base (1) on both sides, and two hydraulic telescopic rods (10) are installed on the upper surface of the base (1); Among them, the output end of the hydraulic telescopic rod (10) is fixedly connected to the lower surface of the corresponding support base (8), and three support columns (12) are fixedly connected to the upper surface of the base (1). Support blocks (6) are slidably connected inside the three support columns (12).

6. The wire repeated bending strength testing device according to claim 5, characterized in that: Each of the three support blocks (6) has two fixing bolts (13) threadedly connected to the outer walls on both sides, and the twelve fixing bolts (13) are in groups of four; Among them, the ends of the three sets of fixing bolts (13) near the support column (12) are all threaded to the inner side of the outer wall of the support block (6) and respectively contact the outer wall of the corresponding support column (12). The positions of the three support columns (12) are opposite to the positions of the corresponding limiting devices.

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