Cable bending test device

Abstract

The utility model relates to a cable bending test device. The cable bending test device comprises two groups of cable clamps which are symmetrically arranged along the length direction of a base; the bending mechanism comprises a sliding groove which extends in the width direction of the base and is located between the two sets of cable clamps, a supporting seat is arranged in the sliding groove in a sliding fit mode, and two sets of limiting columns are arranged on the supporting seat in parallel in the axial direction of the sliding groove. The driving mechanism is used for driving the supporting seat to reciprocate in the sliding groove and comprises a driving motor arranged on the lower side of the base and a driving strip-shaped frame with the axis perpendicular to the sliding groove, the driving strip-shaped frame is fixed to the lower end of the supporting seat, and a connecting rod is fixed to the output end of the driving motor; the other end of the connecting rod is rotatably provided with a sliding block which is in axial sliding fit with the driving strip-shaped frame, continuous rotation of the driving motor is converted into reciprocating linear motion of the driving strip-shaped frame, the supporting seat is driven to slide in the sliding groove in a reciprocating mode, and double-face reciprocating bending testing is conducted on the middle portion of the cable. The device is high in stability, high in testing efficiency and good in bending testing effect.

Description

Technical Field

[0001] This utility model relates to the field of cable processing technology, specifically to a cable bending test device. Background Technology

[0002] Cables are a general term for items such as optical cables and electrical cables, mainly used for multiple functions such as control installation, equipment connection, and power transmission. They are a common and indispensable item in daily life. Cables require a certain degree of flexibility during use. During repeated bending, the metal wires inside the cable can break. Therefore, bending tests are needed to test the cable's bending resistance. For example, patent application number "CN202221892970.3" discloses a high-voltage cable testing fixture. After clamping the two ends of the cable harness with a clamping connector, the output end of a cylinder extends and abuts against the middle of the cable harness, bending it. After the cylinder resets, a spring drives the clamping connector to reset, allowing the cable harness to return to its bent state. Repeating this test verifies the flexibility and bending reliability of the cable harness. However, this method, using the cylinder output end acting on the middle of the cable harness to push the cable bending, can only test bending on one side, i.e., it can only perform single-sided bending tests, resulting in low testing efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a cable bending test device, which converts the continuous rotation of the drive motor into the reciprocating linear motion of the drive bar frame, causing the support base to slide back and forth in the slide groove, and performing a double-sided reciprocating bending test on the middle of the cable. It has high stability, high testing efficiency and good bending test effect.

[0004] This utility model provides a cable bending test device to solve the above-mentioned technical problems, comprising:

[0005] Two sets of cable clamps are symmetrically arranged along the length of the base;

[0006] The bending mechanism includes a slide groove extending along the width direction of the base and located between the two sets of cable clamps, a support seat slidably fitted in the slide groove, and two sets of limiting posts arranged side by side on the support seat along the axial direction of the slide groove.

[0007] A drive mechanism is used to drive the support seat to reciprocate within the slide groove. The drive mechanism includes a drive motor located on the lower side of the base and a drive bar frame with its axis perpendicular to the slide groove. The drive bar frame is fixed to the lower end of the support seat. A connecting rod is fixed to the output end of the drive motor, and a sliding block is rotatably provided at the other end of the connecting rod, which slides axially with the drive bar frame.

[0008] Furthermore, the drive mechanism also includes a support plate located on the lower side of the drive bar frame, the support plate is provided with an internal gear ring, the end of the connecting rod away from the drive motor is rotatably provided with a gear that meshes with the internal gear ring, and the sliding block is rotatably provided on the gear.

[0009] Furthermore, guide blocks are provided at both ends of the drive bar frame, and guide grooves are provided on the bottom wall of the base to slide in cooperation with the guide blocks, with the axis of the guide groove being parallel to the axis of the slide groove.

[0010] Furthermore, the drive bar frame is provided with a bar-shaped guide hole, and the two side walls of the bar-shaped guide hole are provided with a first limiting groove. The sliding block is provided with a first limiting protrusion that slides in cooperation with the first limiting groove.

[0011] Furthermore, the cable clamp includes a sliding seat that can move along the length of the base. The opposite sides of the two sets of sliding seats are connected to a baffle fixed on the base by an elastic element. A cable fixing head is rotatably mounted on the sliding seat by a bearing.

[0012] Furthermore, the cable fixing head includes a support rod, a support cylinder is provided on the support rod, a threaded hole is provided on the side wall of the support cylinder, a screw is threaded into the threaded hole, and a clamping block is provided on the inner end of the screw.

[0013] Furthermore, the base is provided with a slide rail, and the bottom of the sliding seat is provided with a slider that cooperates with the slide rail.

[0014] Furthermore, the two side walls of the slide groove are provided with a second limiting groove, the inner wall of the second limiting groove is provided with a ball, and the two side walls of the support base are provided with a second limiting protrusion that slides in cooperation with the second limiting groove.

[0015] The beneficial effects of this utility model are as follows: Two sets of cable clamps clamp and fix the two ends of the cable. Since the two sets of cable clamps are symmetrically arranged along the length direction of the base, when the two ends of the cable are clamped on the cable clamps, the cable extends along the length direction of the base. The bending mechanism is used to bend the cable. When the two ends of the cable are clamped, the middle of the cable is located between the two sets of limiting posts. As the support seat moves back and forth along the slide groove, when the support seat deviates from the central axis of the cable, the two limiting posts on the support seat also move along the slide groove. One limiting post acts as a bending limit, bending the cable in one direction. When the support seat moves to the other side, the other limiting post acts as a new bending limit, bending the cable in the other direction. That is, during the reciprocating movement of the support seat, the two limiting posts perform double-sided bending tests on the cable. At this time, due to the limitation of the slide groove on the displacement of the support seat, the movement direction of the two limiting posts is kept consistent and will not deviate, thus ensuring the stability of the bending point of the cable during multiple bends. The support base reciprocates within the slide groove via a drive mechanism, which includes a drive motor and a drive bar frame. The drive bar frame is fixed to the lower end of the support base, restricting its movement to the axial direction of the slide groove. The sliding block and the drive adjustment frame slide along the axial direction of the drive bar frame. The drive motor drives a connecting rod to rotate, causing the sliding block to rotate around the output end of the drive motor. This rotation changes the sliding block's position in the width direction of the base, causing it to slide axially within the drive bar frame and push it to reciprocate along the axial direction of the slide groove. This, in turn, causes the support base to reciprocate within the slide groove, performing a bending test on the cable.

[0016] In summary, by using this utility model, the drive motor drives the connecting rod to rotate, causing the sliding block on the other end of the connecting rod to push the drive bar frame to move back and forth along the axial direction of the slide groove. This, in turn, drives the two limiting posts on the support base to move back and forth, alternating directions to deviate from the axis of the cable, thus performing a double-sided reciprocating bending test on the cable, improving the efficiency and effectiveness of the cable bending test.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drive mechanism of this utility model.

[0020] In the attached diagram: 1-Cable clamp, 11-Sliding seat, 111-Slider, 12-Elastic element, 13-Cable fixing head, 131-Support rod, 132-Support cylinder, 133-Threaded hole, 134-Screw, 135-Clamping block, 2-Bending mechanism, 21-Support seat, 211-Second limiting protrusion, 22-Limiting post, 3-Drive mechanism, 31-Drive motor, 32-Drive strip frame, 321-Guide block, 322-Strip guide hole, 323-First limiting groove, 33-Connecting rod, 34-Sliding block, 341-First limiting protrusion, 35-Support plate, 36-Internal gear ring, 37-Gear, 4-Base, 41-Slide groove, 411-Second limiting groove, 412-Ball, 42-Guide groove, 43-Baffle, 44-Slide rail. Detailed Implementation

[0021] Referring to the accompanying drawings, the specific embodiments of this utility model will be described in detail.

[0022] Reference Figures 1 to 2 This utility model provides a cable bending test device, including two sets of cable clamps 1 for holding the two ends of the cable, a bending mechanism 2 for reciprocating bending test of the middle of the cable, and a drive mechanism 3 for driving the bending mechanism 2 to move.

[0023] Two sets of cable clamps 1 are symmetrically arranged along the length of the base 4. These clamps hold and fix both ends of the cable. Because the clamps are symmetrically arranged, the cable extends along the length of the base 4 after both ends are clamped. Each cable clamp 1 includes a sliding seat 11 that can move along the length of the base 4. The opposite sides of the two sliding seats 11 are connected to a baffle 43 fixed to the base 4 via an elastic element 12. A cable fixing head 13 is rotatably mounted on the sliding seat 11 via a bearing. The cable fixing head 13 fixes both ends of the cable. Since the cable fixing head 13 can rotate with the sliding seat 11, the fixing points at both ends of the cable remain smooth during bending, preventing breakage at the clamped ends. At this time, when the cable is bent in the middle, both ends are subjected to the tension during bending, and the two ends of the cable can move closer to each other. The elastic element 12 enables the cable to reset its curvature during the reciprocating bending process, ensuring that the bending mechanism 2 always acts on the middle of the cable, guaranteeing that the bending point of the cable remains unchanged, improving the effect of the bending test, and ensuring the accuracy of the bending test. Furthermore, the base 4 is provided with a slide rail 44, and the bottom of the sliding seat 11 is provided with a slider 111 that cooperates with the slide rail 44. The movement of the sliding seat 11 is guided by the cooperation of the slider 111 and the slide rail 44, ensuring the stability of the movement of the sliding seat 11.

[0024] Furthermore, the cable fixing head 13 includes a support rod 131, on which a support cylinder 132 is provided. A threaded hole 133 is provided on the side wall of the support cylinder 132, and a screw 134 is threaded into the threaded hole 133. A clamping block 135 is provided on the inner end of the screw 134. The support rod 131 is connected to a bearing on the sliding seat 11 and can rotate relative to the sliding seat 11. The support cylinder 132 is used to thread the cable. When the end of the cable is threaded into the support cylinder 132, rotating the screw 134 moves the clamping block 135 towards the cable and presses it against the cable to fix the end of the cable. Using this method, the cable fixing head 13 can fix cables of different diameters, thus facilitating bending tests on cables of different diameters.

[0025] The bending mechanism 2 includes a groove 41 extending along the width of the base 4 and located between the two sets of cable clamps 1. A support seat 21 is slidably fitted in the groove 41, and two sets of limiting posts 22 are arranged side by side on the support seat 21 along the axial direction of the groove 41. When both ends of the cable are clamped, the middle of the cable is located between two sets of limiting posts 22. As the support seat 21 moves back and forth along the slide groove 41, when the support seat 21 deviates from the central axis of the cable, the two limiting posts 22 on the support seat 21 also move along the slide groove 41. One limiting post 22 acts as a bending limit, bending the cable in one direction. When the support seat 21 moves to the other side, the other limiting post 22 acts as a new bending limit, bending the cable in the other direction. That is, during the reciprocating motion of the support seat 21, the two limiting posts 22 perform double-sided bending tests on the cable. At this time, due to the limitation of the slide groove 41 on the displacement of the support seat 21, the two limiting posts 22 keep their movement directions consistent and do not deviate, thus ensuring the stability of the bending point of the cable during multiple bends. Furthermore, the two side walls of the slide groove 41 are provided with second limiting grooves 411, and the inner wall of the second limiting grooves 411 is provided with ball bearings 412. The two side walls of the support base 21 are provided with second limiting protrusions 211 that slide in cooperation with the second limiting grooves 411. In this way, the cooperation between the second limiting grooves 411 and the second limiting protrusions 211 can not only restrict the support base 21 within the slide groove 41, making it stably connected, but also further guide the sliding of the support base 21.

[0026] The drive mechanism 3 is used to drive the support base 21 to reciprocate within the slide groove 41.

[0027] Specifically, the drive mechanism 3 includes a drive motor 31 located on the lower side of the base 4 and a drive bar frame 32 with its axis perpendicular to the slide groove 41. The drive bar frame 32 is fixed to the lower end of the support base 21, thus restricting the drive bar frame 32 to move only along the axial direction of the slide groove 41. Furthermore, guide blocks 321 are provided at both ends of the drive bar frame 32, and guide grooves 42 are provided on the bottom wall of the base 4 to slide in cooperation with the guide blocks 321. The axis of the guide grooves 42 is parallel to the axis of the slide groove 41, further ensuring the stability of the drive frame movement. The drive bar frame 32 is provided with a bar-shaped guide hole 322, and the two side walls of the bar-shaped guide hole 322 are provided with a first limiting groove 323. The sliding block 34 is provided with a first limiting protrusion 341 that slides in cooperation with the first limiting groove 323. At this time, the bar-shaped guide hole 322 guides the movement of the sliding block 34. The first limiting protrusion 341 and the first limiting groove 323 cooperate to make the sliding block 34 and the drive bar frame 32 stably connected and prevent them from separating.

[0028] The output end of the drive motor 31 is fixed with a connecting rod 33, and the other end of the connecting rod 33 is rotatably equipped with a sliding block 34 that slides axially with the drive bar frame 32. The drive motor 31 drives the connecting rod 33 to rotate, and when the connecting rod 33 rotates, it drives the sliding block 34 to rotate around the output end of the drive motor 31. When the sliding block 34 rotates around the output end of the drive motor 31 and changes its position in the width direction of the base 4, the sliding block 34 slides axially within the drive bar frame 32 and pushes the drive bar frame 32 to reciprocate along the axial direction of the slide groove 41, thereby driving the support base 21 to reciprocate within the slide groove 41 to perform a bending test on the cable.

[0029] Furthermore, the drive mechanism 3 also includes a support plate 35 located on the lower side of the drive bar frame 32. The support plate 35 can be fixed to the lower side of the base 4 by a support member. The support plate 35 is provided with an internal gear ring 36. The end of the connecting rod 33 away from the drive motor 31 is rotatably provided with a gear 37 that meshes with the internal gear ring 36. The sliding block 34 is rotatably mounted on the gear 37. The engagement of the internal gear ring 36 and the gear 37 further improves the stability of the rotation of the sliding block 34. The support plate 35 is provided with a support ring, which has an annular groove. The internal gear ring 36 is located in the annular groove, and the teeth of the gear 37 extend into the annular groove and mesh with the internal gear ring 36. At this time, the gear ring can be limited by the annular groove, so that it is always meshed with the internal gear ring 36, further improving the stability of the structure.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable bending test device, characterized in that, include: Two sets of cable clamps (1) are symmetrically arranged along the length of the base (4); The bending mechanism (2) includes a groove (41) extending along the width direction of the base (4) and located between the two sets of cable clamps (1). A support seat (21) is slidably fitted in the groove (41), and two sets of limiting posts (22) are arranged side by side on the support seat (21) along the axial direction of the groove (41). The drive mechanism (3) is used to drive the support base (21) to reciprocate within the slide groove (41). The drive mechanism (3) includes a drive motor (31) located on the lower side of the base (4) and a drive bar frame (32) with its axis perpendicular to the slide groove (41). The drive bar frame (32) is fixed to the lower end of the support base (21). A connecting rod (33) is fixed to the output end of the drive motor (31). A sliding block (34) is rotatably provided at the other end of the connecting rod (33) and slides axially with the drive bar frame (32).

2. The cable bending test device according to claim 1, characterized in that, The drive mechanism (3) also includes a support plate (35) located on the lower side of the drive bar frame (32). The support plate (35) is provided with an internal gear ring (36). The end of the connecting rod (33) away from the drive motor (31) is rotatably provided with a gear (37) that meshes with the internal gear ring (36). The sliding block (34) is rotatably provided on the gear (37).

3. The cable bending test device according to claim 1, characterized in that, The drive bar frame (32) has guide blocks (321) at both ends, and the bottom wall of the base (4) has a guide groove (42) that slides with the guide block (321). The axis of the guide groove (42) is parallel to the axis of the slide groove (41).

4. The cable bending test device according to claim 1, characterized in that, The drive bar frame (32) is provided with a bar-shaped guide hole (322), and the two side walls of the bar-shaped guide hole (322) are provided with a first limiting groove (323). The sliding block (34) is provided with a first limiting protrusion (341) that slides with the first limiting groove (323).

5. The cable bending test device according to claim 1, characterized in that, The cable clamp (1) includes a sliding seat (11) that can move along the length of the base (4). The two sets of sliding seats (11) are connected to the baffle (43) fixed on the base (4) by means of an elastic element (12). The sliding seat (11) is provided with a cable fixing head (13) through a bearing.

6. The cable bending test device according to claim 5, characterized in that, The cable fixing head (13) includes a support rod (131), a support cylinder (132) is provided on the support rod (131), a threaded hole (133) is provided on the side wall of the support cylinder (132), a screw (134) is threaded in the threaded hole (133), and a clamping block (135) is provided on the inner end of the screw (134).

7. The cable bending test device according to claim 5, characterized in that, The base (4) is provided with a slide rail (44), and the bottom of the sliding seat (11) is provided with a slider (111) that cooperates with the slide rail (44).

8. The cable bending test device according to claim 1, characterized in that, The slide groove (41) is provided with a second limiting groove (411) on both sides, and a ball bearing (412) is provided on the inner wall of the second limiting groove (411). The support base (21) is provided with a second limiting protrusion (211) on both sides that slides in cooperation with the second limiting groove (411).

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