Wiring harness fatigue endurance life test bench

Abstract

The utility model relates to a wire harness fatigue endurance life test bench, and relates to the technical field of wire harness test equipment, the wire harness fatigue endurance life test bench comprises a mounting plate, a clamping bench is fixedly arranged on the mounting plate, a clamping assembly used for clamping a wire harness is arranged on the clamping bench, and a support frame is fixedly arranged on the mounting plate. An adjustable-speed motor is fixedly arranged at the top of the supporting frame, a rotating disc is fixedly arranged on a driving shaft of the adjustable-speed motor, a sliding groove is formed in the rotating disc in the radial direction, a sliding block is arranged in the sliding groove in a sliding mode, a locking assembly is arranged on the sliding block, and a connecting rod is rotationally arranged on the sliding block; a side plate is fixedly arranged on the side wall of the supporting frame, a sleeve block is fixedly arranged on the side plate, a test rod is arranged in the sleeve block in a sliding mode, the top end of the test rod is rotationally connected with the end of the connecting rod, and a sleeve connection ring is fixedly arranged at the bottom end of the test rod. The fatigue durability failure life testing device has the effect of conveniently testing the fatigue durability failure life of the wiring harness in different environments.

Description

Technical Field

[0001] The utility model relates to the technical field of wire harness testing equipment, in particular to a wire harness fatigue durability life test bench. Background Art

[0002] The wiring harness can be regarded as the neural network system of the car. It plays the role of transmitting voltage, signals and data in the normal operation of the car. The failure of the automobile wiring harness will not only affect the signal transmission and communication of the vehicle, but also threaten the safety of the driver. Therefore, it is very important to assess the fatigue durability failure life of the wiring harness in engineering practice. The movement amplitude and movement frequency of the wiring harness in different environments will be different. The common wiring harness test bench has a small test range and it is difficult to simulate different use environments of the wiring harness. Utility Model Content

[0003] In order to facilitate testing of the fatigue durability failure life of a wiring harness in different environments, the present application provides a wiring harness fatigue durability life test bench.

[0004] The wire harness fatigue endurance life test bench provided in this application adopts the following technical solution:

[0005] A wire harness fatigue endurance life test bench comprises a mounting plate, a clamping table is fixedly arranged on the mounting plate, a clamping assembly for clamping the wire harness is arranged on the clamping table, a support frame is fixedly arranged on the mounting plate, a speed regulating motor is fixedly arranged on the top of the support frame, a turntable is fixedly arranged on the driving shaft of the speed regulating motor, a sliding groove is radially opened on the turntable, a sliding block is slidingly arranged in the sliding groove, a locking assembly is arranged on the sliding block, a connecting rod is rotatably arranged on the sliding block, the locking assembly is used to fix the sliding block on the turntable, a side plate is fixedly arranged on the side wall of the support frame, a sleeve block is fixedly arranged on the side plate, a test rod is slidably arranged in the sleeve block, the top end of the test rod is rotatably connected to the end of the connecting rod, and a sleeve ring is fixedly arranged on the bottom end of the test rod.

[0006] By adopting the above technical scheme, when testing the wiring harness, the test wiring harness is passed through the sleeve ring, and the wiring harness is securely fixed on the clamping table by using the clamping assembly, and the speed regulating motor is started to drive the turntable to rotate, the turntable drives the connecting rod to swing, and the connecting rod pulls the test rod to perform reciprocating sliding motion in the sleeve block, and the sleeve ring at the end of the test rod drives the test wiring harness to swing back and forth, thereby performing a fatigue durability life test on the test wiring harness; in addition, the reciprocating sliding frequency of the test rod is changed by changing the rotation speed of the speed regulating motor, and the reciprocating sliding stroke of the test rod is adjusted by changing the position of the sliding block in the sliding groove and re-fixing the sliding block on the turntable by the locking assembly; in summary, it is convenient to test the fatigue durability life of the wiring harness under the movement amplitude and movement frequency in different environments.

[0007] Preferably, the internal thread of the sleeve ring is provided with a clamping bolt, and a clamping block is fixedly provided on the end of the clamping bolt.

[0008] By adopting the above technical solution, after the test harness is passed through the socket ring, the clamping bolt is turned to firmly bind the test harness in the socket ring. On the one hand, it is convenient to test harnesses of different thicknesses. On the other hand, it is possible to avoid the test harness from colliding with the socket ring and vibrating during the swinging process, thereby interfering with the test results of the fatigue durability of the harness movement frequency.

[0009] Preferably, the clamping assembly includes a column block, a column, a clamping rod, and a locking nut. Two column blocks are arranged on the clamping platform. The column is fixedly arranged on the column block, the clamping rod is slidably arranged in the column, the locking nut is rotatably arranged on the top of the column, the locking nut is threadably engaged with the clamping rod, a groove is provided at the sliding bottom end of the clamping rod, and a clamping hole is provided on the peripheral wall of the column.

[0010] By adopting the above technical solution, when it is necessary to use a clamping assembly to securely fix the wiring harness on the clamping table, insert the end of the test wiring harness into the clamping hole of the column block, turn the locking nut, and the locking nut thread engages the clamping rod to make the clamping rod slide in the column. The groove at the bottom of the clamping rod and the clamping hole are clamped from both sides of the test wiring harness, thereby fixing both ends of the wiring harness on the column.

[0011] Preferably, the column block is slidably arranged on the clamping table, a screw rod is rotatably arranged in the clamping table, and the screw rod is threadably engaged with the column block.

[0012] By adopting the above technical solution, the column block is driven to slide on the clamping table by rotating the screw rod to adjust the distance between the two column blocks. On the one hand, it is convenient to put the test harness in a loose state when clamping the test harness, which is convenient for the clamping operation. On the other hand, it is convenient to adjust the tightness of the test harness between the two column blocks during the test.

[0013] Preferably, the clamping platform is penetrated by the same screw rod, and the screw rod is provided with a first thread segment and a second thread segment, the first thread segment and the second thread segment have opposite rotation directions, the first thread segment is threadedly connected to one of the column blocks, and the second thread segment is threadedly connected to the other column block.

[0014] By adopting the above technical solution, when the screw rod is turned, the first thread segment meshes with one of the column blocks and the second thread segment meshes with the other column block, and the movement directions are opposite, so that the distance between the two column blocks can be adjusted faster and more conveniently.

[0015] Preferably, the locking assembly comprises a fixing ear and a locking bolt, wherein the fixing ear is fixedly disposed on the sliding block, the locking bolt is threadedly disposed in the fixing ear, and a plurality of locking holes are provided on the turntable, and the locking bolt can be inserted into the locking holes.

[0016] By adopting the above technical solution, when the sliding block needs to be re-fixed on the turntable, the locking bolt is turned, the locking bolt engages with the thread on the fixing ear and is inserted into the locking hole, so that it is fixed at the position of the locking hole, thereby re-fixing the sliding block on the turntable.

[0017] Preferably, the locking hole is threadably matched with the locking bolt.

[0018] By adopting the above technical solution, during the process of the locking bolt rotating and inserting into the lock hole, the lock hole and the locking bolt are further threadedly matched, thereby improving the stability of the connection between the locking bolt and the lock hole and minimizing the vibration of the locking bolt in the lock hole when the turntable rotates.

[0019] Preferably, a plurality of deceleration ball points are fixedly arranged on the turntable, and the deceleration ball points are arranged close to the lock holes, and the deceleration ball points can be fixed to the ears for friction fit.

[0020] By adopting the above technical solution, during the sliding process of the sliding block, the friction force increases when the fixed ear touches the deceleration ball point, which hinders the direct sliding of the sliding block, thereby increasing the sense of frustration when the locking bolt on the fixed ear is relative to the lock hole, which facilitates the corresponding positioning of the locking bolt and the lock hole. If there is no need to fix the lock hole at this position, the thrust is increased to continue to move the sliding block so that the fixed ear passes the deceleration ball point at this position.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. By setting up a clamping table, clamping components, support frame, speed regulating motor, turntable, sliding groove, sliding block, locking component, connecting rod, side plate, sleeve block, test rod, sleeve ring, clamping bolt, and clamp block, it is convenient to test the fatigue endurance life of the wiring harness under the movement amplitude and movement frequency in different environments;

[0023] 2. By setting the column block, the column, the clamping rod, the locking nut, the groove, the clamping hole, the column block, the screw rod, the first thread section, and the second thread section, it is convenient to make the test harness in a loose state when clamping the test harness, which is convenient for the clamping operation, and it is convenient to adjust the tightness of the test harness between the two column blocks during the test process;

[0024] 3. By setting fixed ears, locking bolts, lock holes, and deceleration ball points, it is easy to adjust and re-lock the position of the sliding block on the turntable, and increase the sense of frustration during the sliding adjustment process of the sliding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a wiring harness fatigue endurance life test bench provided in an embodiment of the present application.

[0026] Figure 2 yes Figure 1 Enlarged view of part A.

[0027] Figure 3 yes Figure 1 Enlarged view of part B.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. Mounting plate; 11. Support frame; 111. Speed ​​regulating motor; 12. Side plate; 13. Block; 14. Test rod; 15. Socket ring; 151. Clamping bolt; 152. Clamping block; 2. Clamping table; 21. Clamping assembly; 211. Column block; 212. Column; 2121. Clamping hole; 213. Clamping rod; 2131. Groove; 214. Locking nut; 22. Screw; 221. First threaded section; 222. Second threaded section; 3. Turntable; 31. Sliding groove; 32. Sliding block; 33. Locking assembly; 331. Fixing ear; 332. Locking bolt; 34. Connecting rod; 35. Locking hole; 36. Deceleration ball point. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The present application embodiment discloses a wire harness fatigue endurance life test bench. Figure 1 It includes a mounting plate 1, on which a clamping platform 2 is fixedly arranged, and on which a clamping assembly 21 for clamping a test harness is arranged. A support frame 11 is fixedly arranged on the mounting plate 1, and a speed regulating motor 111 is fixedly arranged on the top of the support frame 11. The speed range of the speed regulating motor 111 is 5 rpm-1000 rpm, and the speed can be freely adjusted.

[0031] Reference Figure 1 and Figure 2A turntable 3 is fixedly arranged on the driving shaft of the speed regulating motor 111. The turntable 3 is provided with a sliding groove 31 along the radial direction. A sliding block 32 is slidingly arranged in the sliding groove 31. A locking assembly 33 is arranged on the sliding block 32. The locking assembly 33 includes a fixing ear 331 and a locking bolt 332. The fixing ear 331 is fixedly arranged on both sides of the sliding block 32. The locking bolt 332 is threadedly arranged in the fixing ear 331. Four groups of locking holes 35 are arranged on the turntable 3 on both sides of the sliding groove 31. The distances from the four groups of locking holes 35 to the rotation center of the turntable 3 are 6mm, 8mm, 10mm, and 12.5mm respectively. The locking bolt 332 can be inserted into the locking hole 35 and threadedly matched with the locking hole 35. A plurality of deceleration ball points 36 are fixedly arranged on the turntable 3. The deceleration ball points 36 are arranged close to the locking holes 35. The deceleration ball points 36 can be in close friction contact with the fixing ears 331.

[0032] Reference Figure 1 and Figure 3 A connecting rod 34 is rotatably provided on the sliding block 32, a side plate 12 is fixedly provided on the side wall of the support frame 11, a sleeve block 13 is fixedly provided on the side plate 12, a test rod 14 is slidably provided in the sleeve block 13, and the test rod 14 slides vertically just below the rotation center of the turntable 3. The top end of the test rod 14 is rotatably connected to the end of the connecting rod 34, and a sleeve ring 15 is fixedly provided at the bottom end of the test rod 14. A clamping bolt 151 is provided with an internal thread of the sleeve ring 15, and an arc-shaped clamping block 152 is fixedly provided at the end of the clamping bolt 151.

[0033] Reference Figures 1 to 3 When testing the wiring harness, pass the test harness through the sleeve ring 15, turn the clamping bolt 151, and bind the middle section of the test harness in the sleeve ring 15. Use the clamping assembly 21 to securely fix the harness on the clamping table 2. Slide the sliding block 32. Whenever the fixed ear 331 contacts the deceleration ball point 36 and there is a sense of frustration, it means that the locking bolt 332 is opposite to a lock hole 35. Then, according to the tested movement amplitude, select the appropriate lock hole 35 to insert, turn the locking bolt 332 and securely fix the sliding block 32 on the turntable 3. Start and adjust the speed of the speed regulating motor 111 to be consistent with the required test frequency. The turntable 3 rotates and pulls the test rod 14 through the connecting rod 34 to make a reciprocating sliding motion in the sleeve block 13. The sleeve ring 15 at the end of the test rod 14 drives the test harness to swing back and forth, thereby performing a fatigue endurance life test on the test harness. In addition, according to the selection of the lock hole 35, the movement amplitude of the test harness simulated by the test rod 14 is 12mm, 16mm, 20mm, and 25mm respectively; the movement frequency of the test harness simulated by the test rod 14 is consistent with the rotation speed of the speed regulating motor 111, so as to facilitate the fatigue endurance life of the test harness under different movement conditions and movement frequency environments.

[0034] In order to adjust the tension of the test harness in the test state, refer to Figure 1 and Figure 3 The clamping assembly 21 includes a column block 211, a column 212, a clamping rod 213, and a locking nut 214. Two column blocks 211 are slidably arranged on the clamping platform 2. A screw rod 22 is rotatably arranged in the clamping platform 2. A first threaded section 221 and a second threaded section 222 are arranged on the screw rod 22. The first threaded section 221 and the second threaded section 222 have opposite rotation directions. The first threaded section 221 is threadedly connected to one of the column blocks 211, and the second threaded section 222 is threadedly connected to the other column block 211. The column 212 is vertically and fixedly arranged on the column block 211, and a clamping hole 2121 is provided on the peripheral wall of the column 212. The clamping rod 213 is vertically slidably arranged in the column 212, and the locking nut 214 is rotatably arranged at the top of the column 212. The locking nut 214 is threadedly engaged with the clamping rod 213, and a groove 2131 is provided at the sliding bottom end of the clamping rod 213.

[0035] Reference Figure 1 and Figure 3 When the harness needs to be fixed on the clamping table 2, the end of the test harness is inserted into the clamping hole 2121 of the column block 211, and the locking nut 214 is screwed. The locking nut 214 is threadedly engaged with the clamping rod 213, so that the clamping rod 213 slides in the column 212, and the groove 2131 at the bottom of the clamping rod 213 and the bottom of the clamping hole 2121 are clamped from both sides of the test harness, thereby fixing both ends of the harness on the column 212. By rotating the screw 22, the first thread segment 221 is engaged with one of the column blocks 211, and the second thread segment 222 is engaged with the other column block 211, and the two column blocks 211 slide in opposite directions to adjust the distance between the two column blocks 211. On the one hand, it is convenient to put the test harness in a loose state when clamping the test harness, which is convenient for the clamping operation. On the other hand, it is convenient to adjust the tightness of the test harness between the two column blocks 211 during the test process, so as to simulate the fatigue strength test of the harness under different tightness environments.

[0036] The implementation principle of a wire harness fatigue and durability life test bench in an embodiment of the present application is as follows: when testing the wire harness, pass the test wire harness through the sleeve ring 15, and tighten the clamping bolt 151 to bind the middle section of the test wire harness in the sleeve ring 15. Tighten the locking nut 214 to securely fix the wire harness on the clamping table 2. Slide the sliding block 32, select a suitable lock hole 35 to insert, tighten the locking bolt 332 and securely fix the sliding block 32 on the turntable 3. Start and adjust the speed of the speed regulating motor 111 to be consistent with the required test frequency, the turntable 3 rotates and pulls the test rod 14 through the connecting rod 34 to make a reciprocating sliding motion in the sleeve block 13, and the sleeve ring 15 at the end of the test rod 14 drives the test wire harness to swing back and forth, thereby performing a fatigue and durability life test on the test wire harness. In addition, according to the selection of the lock hole 35, the movement amplitude of the test harness simulated by the test rod 14 changes accordingly, and the movement frequency of the test harness simulated by the test rod 14 is consistent with the speed of the speed regulating motor 111, thereby facilitating the fatigue endurance life of the test harness under different movement conditions and movement frequency environments.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wire harness fatigue endurance life test bench, characterized by: The invention comprises a mounting plate (1), a clamping platform (2) is fixedly arranged on the mounting plate (1), a clamping assembly (21) for clamping a wiring harness is arranged on the clamping platform (2), a support frame (11) is fixedly arranged on the mounting plate (1), a speed regulating motor (111) is fixedly arranged on the top of the support frame (11), a turntable (3) is fixedly arranged on the driving shaft of the speed regulating motor (111), a sliding groove (31) is radially provided on the turntable (3), a sliding block (32) is slidably arranged in the sliding groove (31), and the sliding block (32) is fixedly arranged on the driving shaft of the speed regulating motor (111). 2) is provided with a locking assembly (33), the locking assembly (33) is used to fix the sliding block (32) on the turntable (3), a connecting rod (34) is rotatably provided on the sliding block (32), a side plate (12) is fixedly provided on the side wall of the support frame (11), a sleeve block (13) is fixedly provided on the side plate (12), a test rod (14) is slidably provided in the sleeve block (13), the top end of the test rod (14) is rotatably connected to the end of the connecting rod (34), and a sleeve ring (15) is fixedly provided on the bottom end of the test rod (14).

2. The wire harness fatigue endurance life test bench according to claim 1, characterized in that: The sleeve ring (15) is internally threaded with a clamping bolt (151), and a clamping block (152) is fixedly disposed at the end of the clamping bolt (151).

3. The wire harness fatigue endurance life test bench according to claim 1, characterized in that: The clamping assembly (21) comprises a column block (211), a column (212), a clamping rod (213), and a locking nut (214); two column blocks (211) are arranged on the clamping platform (2); the column (212) is fixedly arranged on the column block (211); a clamping hole (2121) is provided on the peripheral wall of the column (212); the clamping rod (213) is slidably arranged in the top of the column (212); the locking nut (214) is rotatably arranged on the top of the column (212); the locking nut (214) is threadedly connected to the clamping rod (213); and a groove (2131) is provided at the sliding bottom end of the clamping rod (213).

4. The wire harness fatigue endurance life test bench according to claim 3, characterized in that: The column block (211) is slidably arranged on the clamping platform (2), a screw rod (22) is rotatably arranged inside the clamping platform (2), and the screw rod (22) is threadedly engaged with the column block (211).

5. The wire harness fatigue endurance life test bench according to claim 4, characterized in that: The clamping platform (2) is penetrated by a same screw rod (22), and the screw rod (22) is provided with a first threaded section (221) and a second threaded section (222), the first threaded section (221) and the second threaded section (222) having opposite thread rotation directions, the first threaded section (221) being threadedly connected to one of the column blocks (211), and the second threaded section (222) being threadedly connected to the other column block (211).

6. The wire harness fatigue endurance life test bench according to claim 1, characterized in that: The locking assembly (33) comprises a fixing ear (331) and a locking bolt (332); the fixing ear (331) is fixedly arranged on the sliding block (32); the locking bolt (332) is threadedly arranged in the fixing ear (331); a plurality of locking holes (35) are provided on the rotating disk (3); and the locking bolt (332) can be inserted into the locking holes (35).

7. The wire harness fatigue endurance life test bench according to claim 6, characterized in that: The locking hole (35) can be threadably matched with the locking bolt (332).

8. The wire harness fatigue endurance life test bench according to claim 7, characterized in that: A plurality of deceleration ball points (36) are fixedly arranged on the turntable (3), and the deceleration ball points (36) are arranged close to the lock holes (35). The deceleration ball points (36) can be frictionally fitted with the fixed ears (331).

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