Cable lossless clamping mechanism and tension test auxiliary device with cable lossless clamping mechanism

Abstract

The utility model discloses a cable lossless clamping mechanism and a tension test auxiliary device with the cable lossless clamping mechanism, and relates to the technical field of test auxiliary equipment, the cable lossless clamping mechanism comprises a mounting seat, two opposite side walls of the mounting seat are both provided with limiting plates protruding inwards in the radial direction, a sliding groove is formed between the two limiting plates, and the sliding groove is provided with a clamping groove; inclined faces enabling the groove diameter of the sliding groove to be gradually shrunk are formed on the opposite side walls of the sliding groove. The two sliding plates are symmetrically connected into the sliding grooves in a sliding mode and attached to the inclined faces. A clamping space is formed between the opposite side walls of the two clamping plates, the two clamping plates are connected with the two sliding plates in a clamped mode respectively, and when the two sliding plates move in the contraction direction of the sliding grooves, the two clamping plates are synchronously driven to move in the contraction direction of the sliding plates, so that the two clamping plates get close to each other, the clamping space becomes small, and clamping is achieved. Inclined planes are formed on the opposite side walls of the limiting plates, sliding of the sliding plates and the clamping plates is guided, the two sliding plates drive the two clamping plates to get close to each other when moving in the contraction direction of the sliding grooves, and stable clamping is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cable testing equipment technology, and more specifically to a cable non-destructive clamping mechanism and a tensile testing auxiliary device having the same. Background Technology

[0002] In the power industry, the mechanical load-bearing capacity of safety equipment such as stranded wires, overhead insulated cables, and insulated ropes is a crucial performance indicator. To ensure the safety performance of these tools, static load tensile tests are required periodically; however, existing testing methods have some technical problems.

[0003] When conducting static load tensile tests, the common practice is for the test personnel to manually wrap the cable around and fix it to the hanging point of the horizontal tensile testing machine, and then apply tension to conduct the test. The manual wrapping method is time-consuming, labor-intensive, and inefficient. At the same time, because the manual wrapping method cannot guarantee the stability of the cable, the cable is prone to slipping or falling off when tension is applied, which affects the accuracy of the test results.

[0004] Therefore, how to provide a clamping mechanism that can automatically clamp cables without manual winding is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a cable non-destructive clamping mechanism and a tensile testing auxiliary device having the same, aiming to fill the gap in directly winding finished products.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cable non-destructive clamping mechanism, comprising:

[0008] The mounting base has radially inward protruding limiting plates on its opposite side walls, a sliding groove is formed between the two limiting plates, and an inclined surface is formed on its opposite side walls that causes the diameter of the sliding groove to gradually shrink.

[0009] The sliding plate, the number of which is two, is symmetrically slidably connected in the sliding groove and fits against the inclined surface;

[0010] The clamping plate consists of two clamping plates, with a clamping space formed between the opposing sidewalls of the two clamping plates. The two clamping plates are respectively engaged with two sliding plates. When the two sliding plates move in the direction of contraction of the sliding groove, they simultaneously drive the two clamping plates to move in the direction of contraction of the sliding plates, thereby bringing the two clamping plates closer to each other and reducing the clamping space to achieve clamping.

[0011] Through the above technical solution, this utility model discloses a cable non-destructive clamping mechanism. The inclined surfaces formed on the opposite sidewalls of the limiting plate guide the sliding of the two sliding plates, causing them to move closer to each other as they move in the direction of contraction of the sliding groove. At the same time, the two clamping plates engage with the two sliding plates, enabling the sliding plates to drive the clamping plates to move synchronously in the direction of contraction of the sliding groove, and causing the two clamping plates to move closer to each other, reducing the clamping space and achieving stable clamping of the cable. When it is necessary to release the cable, the two sliding plates drive the two clamping plates to slide in the direction of expansion of the sliding groove, thereby releasing the cable. This utility model can achieve automatic clamping of cables, reduce labor intensity, and improve efficiency.

[0012] Preferably, in the above-mentioned cable non-destructive clamping mechanism, symmetrically arranged slots are formed on the opposite sidewalls of the two sliding plates. A hydraulic cylinder is installed in the mounting base near the slots, and a limit block is fixed on the piston rod of the hydraulic cylinder. The two ends of the limit block are engaged in the two slots. By setting slots on the sidewalls of the sliding plates and utilizing the cooperation of the hydraulic cylinder and the limit block, precise control of the sliding plates is achieved, improving the stability and ease of operation of the clamping mechanism and reducing cable damage caused by improper manual operation.

[0013] Preferably, in the above-mentioned non-destructive cable clamping mechanism, the two sliding plates have wedge-shaped grooves on their opposite sidewalls, and the two clamping plates have wedge-shaped blocks corresponding to the wedge-shaped grooves. The wedge-shaped grooves and wedge-shaped blocks enable a detachable connection between the two, allowing for the replacement of clamping plates with different inner diameters for cables of different diameters, thus broadening the applicability. The cooperation of the wedge-shaped grooves and wedge-shaped blocks achieves synchronous sliding of the sliding plates and clamping plates, making the clamping plates more stable when clamping cables, preventing displacement of the clamping plates under force, and improving the reliability of clamping.

[0014] Preferably, in the above-mentioned cable non-destructive clamping mechanism, the bottom of the sliding groove has two spaced-apart slide rails parallel to the inclined surface. A slider is slidably connected within the slide rails. The bottom wall of the sliding plate has a groove corresponding to the slider, and the slider is fastened to the bottom of the groove with bolts. This structural design provides a stable sliding guide, reduces friction and wear of the sliding plate during operation, and extends the service life of the mechanism.

[0015] Preferably, in the above-mentioned cable non-destructive clamping mechanism, a pad is detachably connected to the side wall of the sliding plate near the limiting plate, and the pad fits against the inclined surface. The pad can serve as a buffer layer between the sliding plate and the limiting plate, reducing direct contact and friction between them, effectively reducing wear on the limiting plate. The detachable connection of the pad facilitates subsequent direct replacement, making operation convenient and reducing costs.

[0016] This utility model also provides a tensile testing auxiliary device for fixing to the hanging point of a horizontal tensile testing machine. It includes a vehicle body and the aforementioned non-destructive cable clamping mechanism. The mounting base is fixed to the upper surface of the vehicle body. A pull rod, fixedly connected to the hanging point of the horizontal tensile testing machine, is fixed to the side of the vehicle body away from the sliding plate. Pullers are installed at all four corners of the vehicle body, and these pullers are slidably connected to the guide rails inside the horizontal tensile testing machine. Combining the non-destructive cable clamping mechanism with the horizontal tensile testing machine achieves non-destructive clamping of the cable during stress testing. The pullers at the four corners allow for stable placement on the guide rails of the horizontal tensile testing machine, sliding back and forth as horizontal tension is applied to the hanging point without friction, thus avoiding interference with the test results.

[0017] Preferably, in the above-mentioned tensile testing auxiliary device, brackets are fixed at each of the four corners of the vehicle body, and the pulleys are mounted on the brackets. This provides a stable pulley mounting method, ensuring the stability and mobility of the vehicle body during the tensile testing process.

[0018] Preferably, in the above-mentioned tensile testing auxiliary device, baffles are fixed on both sides of the top of the mounting base, and the bottom wall of the baffles is in contact with the top wall of the sliding plate. Fixing baffles on both sides of the top of the mounting base, with the bottom wall of the baffles in contact with the top wall of the sliding plate, enhances the stability of the sliding plate during operation, prevents the sliding plate from shifting under force, and improves the clamping accuracy.

[0019] Preferably, in the above-mentioned tensile testing auxiliary device, the mounting base is fixed to one side of the baffle with a mounting bracket, and a controller is mounted on the upper surface of the mounting bracket. This convenient controller installation method facilitates operator control of the clamping mechanism, improving operational convenience and efficiency, while also displaying and recording data during the tensile testing process.

[0020] Preferably, in the above-mentioned tensile testing auxiliary device, the bottom of the vehicle body is equipped with casters. The vehicle body's mobility allows for quick adjustment of its position in different testing environments, improving testing efficiency and flexibility.

[0021] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a cable non-destructive clamping mechanism and a tensile testing auxiliary device having the same, which has the following beneficial effects:

[0022] 1. This utility model provides guidance for the sliding plate and clamping plate by setting the inclined surface of the limiting plate, so that when they move in the direction of the sliding groove contraction, the two clamping plates can move closer or separate from each other. At the same time, through the precise control of the hydraulic cylinder, stable clamping or release can be achieved.

[0023] 2. The wedge groove and wedge block structure of this utility model can realize the synchronous sliding of the sliding plate and the clamping plate, making the clamping plate more stable when clamping the cable, preventing the clamping plate from shifting under force, improving the reliability of clamping, and at the same time, it can meet the requirement that when testing cables of different diameters, only the clamping plates with different inner diameter clamping spaces need to be replaced. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 The attached figure is a structural schematic diagram of the cable non-destructive clamping mechanism provided by this utility model;

[0026] Figure 2 The attached figure is an exploded view of the cable non-destructive clamping mechanism provided by this utility model;

[0027] Figure 3 The attached figure is a schematic diagram of the slide rail and slider in the cable non-destructive clamping mechanism provided by this utility model;

[0028] Figure 4 The attached figure is a schematic diagram of the structure of the sliding plate provided by this utility model;

[0029] Figure 5 The attached figure is a structural schematic diagram of the tensile testing auxiliary device provided by this utility model.

[0030] in:

[0031] 1-Mounting base;

[0032] 11-Baffle; 12-Mounting bracket; 121-Through hole;

[0033] 2-Limit plate;

[0034] 21-Sliding groove; 22-Inclined surface;

[0035] 3-Sliding plate;

[0036] 31-Slot; 32-Wedge groove; 33-Groove; 34-Bolt; 35-Pad;

[0037] 4-Plywood;

[0038] 41-Clamping space; 42-Wedge block;

[0039] 5-Hydraulic cylinder;

[0040] 51-Piston rod; 52-Limit block;

[0041] 6-Slide rail;

[0042] 61-Slider;

[0043] 7-Car body;

[0044] 71-Pull rod; 72-Pulley; 73-Bracket; 74-Cascading wheel;

[0045] 8-Controller. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] Participate in the attached Figure 1-4 This utility model discloses a cable non-destructive clamping mechanism, comprising:

[0048] Mounting base 1, with radially inward protruding limiting plates 2 on both opposite side walls of mounting base 1, a sliding groove 21 is formed between the two limiting plates 2, and an inclined surface 22 is formed on their opposite side walls that causes the groove diameter of the sliding groove 21 to gradually shrink.

[0049] There are two sliding plates 3, which are symmetrically slidably connected in the sliding groove 21 and fit against the inclined surface 22.

[0050] There are two clamping plates 4. A clamping space 41 is formed between the opposite side walls of the two clamping plates 4. The two clamping plates 4 are respectively engaged with two sliding plates 3. When the two sliding plates 3 move in the contraction direction of the sliding groove 21, they simultaneously drive the two clamping plates 4 to move in the contraction direction of the sliding plates 3, thereby making the two clamping plates 4 closer to each other, causing the clamping space 41 to become smaller, so as to achieve clamping.

[0051] To further optimize the above technical solution, symmetrical slots 31 are provided on the opposite sidewalls of the two sliding plates 3. A hydraulic cylinder 5 is installed in the mounting base 1 on the side near the slots 31. A limit block 52 is fixed on the piston rod 51 of the hydraulic cylinder 5, and the two ends of the limit block 52 are engaged in the two slots 31.

[0052] To further optimize the above technical solution, the two sliding plates 3 have wedge-shaped grooves 32 on their opposite sidewalls, and the two clamping plates 4 have wedge-shaped blocks 42 corresponding to the wedge-shaped grooves 32.

[0053] To further optimize the above technical solution, two spaced slide rails 6 are provided at the bottom of the sliding groove 21 and are parallel to the inclined plane 22. A slider 61 is slidably connected in the slide rail 6. A groove 33 corresponding to the slider 61 is provided on the bottom wall of the sliding plate 3, and the slider 61 and the bottom of the groove 33 are fastened together by bolts 34.

[0054] To further optimize the above technical solutions, such as Figure 3-4 As shown, there are two sliders 61 and two grooves 33.

[0055] To further optimize the above technical solution, a pad 35 is detachably connected to the side wall of the sliding plate 3 near the limiting plate 2, and the pad 35 is in contact with the inclined surface 22.

[0056] To further optimize the above technical solution, the number of pads 35 is two, the two pads 35 are arranged at intervals and both are attached to the inclined surface 22.

[0057] See appendix Figure 5 This utility model discloses a tensile testing auxiliary mechanism for fixing to the hanging point of a horizontal tensile testing machine. It includes a vehicle body 7 and the aforementioned cable non-destructive clamping mechanism. The mounting base 1 is fixed on the upper surface of the vehicle body 7. A pull rod 71 that is fixedly connected to the hanging point of the horizontal tensile testing machine is fixed on the side of the vehicle body 7 away from the sliding plate 3. Pulleys 72 are installed on the four corners of the vehicle body 7. The pulleys 72 are slidably connected to the guide rail inside the horizontal tensile testing machine.

[0058] To further optimize the above technical solution, brackets 73 are fixed at the four corners of the vehicle body 7, and pulleys 72 are installed on the brackets 73.

[0059] To further optimize the above technical solution, baffles 11 are fixed on both sides of the top of the mounting base 1, and the bottom wall of the baffles 11 is in contact with the top wall of the sliding plate 3.

[0060] To further optimize the above technical solution, a mounting bracket 12 is fixed on one side of the baffle 11, and a controller 8 is mounted on the upper surface of the mounting bracket 12.

[0061] To further optimize the above technical solution, the controller 8 has a display screen and operation buttons, which can control the extension speed of the piston rod 51 of the hydraulic cylinder 5, and can record and analyze the data during the tensile test.

[0062] To further optimize the above technical solution, the mounting frame 12 is hollow inside, the hydraulic cylinder 5 is installed on the bottom wall of the mounting base 1 and located inside the mounting frame 12, and a through hole 121 is opened on the side of the mounting frame 12 near the sliding plate 3. The end of the piston rod 51 away from the hydraulic cylinder 5 passes through the through hole 121 and is engaged with the slot 31 by the limiting block 52.

[0063] To further optimize the above technical solution, universal wheels 74 are installed at the bottom of the vehicle body 7.

[0064] The embodiments of this utility model are as follows:

[0065] When tensile testing is required, two tensile testing auxiliary devices need to be arranged symmetrically. The two ends of the cable to be tested are placed in the clamping space 41 respectively. The piston rod 51 is extended by the hydraulic cylinder 5. Due to the setting of the inclined surface 22 of the limiting plate 2, the sliding plate 3 and the clamping plate 4 move towards each other synchronously, thereby clamping the cable to be tested. Then, the cable is fixedly connected to the hanging point of the horizontal tensile testing machine by the pull rod 71, and opposite forces are applied to the two tensile testing auxiliary devices to realize the tensile test of the cable. The controller 8 records the data in real time during the tensile test and performs corresponding data analysis.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cable non-destructive clamping mechanism, characterized by, Include: Mounting seat (1), the opposite two side walls of mounting seat (1) both have radially inwardly protruding limit board (2), the sliding groove (21) is formed between two limit board (2), and its opposite side wall is formed with the inclined plane (22) that makes the slot diameter of sliding groove (21) gradually contract; Sliding plate (3), the number of two sliding plate (3) is two, two sliding plate (3) symmetrically slide in sliding groove (21), and with the inclined plane (22) is attached; Clamp plate (4), the number of two clamp plate (4) is two, the opposite side wall between two clamp plate (4) forms clamping space (41), two clamp plate (4) are respectively with two sliding plate (3) joint, two sliding plate (3) to the sliding groove (21) shrink direction moves, simultaneously drive two clamp plate (4) to the shrink direction of sliding plate (3) moves, further make two clamp plate (4) approach each other, cause clamping space (41) become small, to realize clamping.

2. A non-destructive cable clamping mechanism according to claim 1, wherein, Two opposite side walls of sliding plate (3) are provided with symmetrically arranged clamping groove (31), the side of mounting seat (1) is close to clamping groove (31) is provided with hydraulic cylinder (5), the piston rod (51) of hydraulic cylinder (5) is fixed with limit block (52), the both ends of limit block (52) are clamped in two clamping groove (31).

3. A non-destructive cable clamping mechanism according to claim 1, wherein, Two opposite side walls of sliding plate (3) have wedge-shaped groove (32), two clamp plate (4) have wedge-shaped block (42) corresponding to wedge-shaped groove (32).

4. A non-destructive cable clamping mechanism according to claim 1, wherein, The bottom of sliding groove (21) is provided with two interval arrangement and parallel with the slide rail (6) of inclined plane (22), the slide rail (6) is slidably connected with sliding block (61), the bottom wall of sliding plate (3) is provided with recess (33) corresponding to sliding block (61), and the bottom of recess (33) is fastened by bolt (34) between sliding block (61) and the groove.

5. A non-destructive cable clamping mechanism according to claim 1, wherein, The side wall of sliding plate (3) close to limit board (2) is detachably connected with backing plate (35), and the backing plate (35) is attached to the inclined plane (22).

6. A tensile test aid for attachment to a hanging point of a horizontal tensile testing machine, characterised in that, Include car body (7), and the cable lossless clamping mechanism of any one of claims 1-5, the mounting seat (1) is fixed on the upper surface of car body (7), the side of car body (7) away from sliding plate (3) is fixed with pull rod (71) connected with horizontal pull machine hanging point fixedly, the four corners of car body (7) are provided with pulley (72), and the pulley (72) is slidably connected with the guide rail in horizontal pull machine.

7. A tension testing aid according to claim 6, wherein The four corners of car body (7) are fixed with bracket (73), and pulley (72) is installed on bracket (73).

8. A tension testing aid according to claim 6, wherein, The both sides of the top of mounting seat (1) are fixed with baffle (11), and the bottom wall of baffle (11) is attached to the top wall of sliding plate (3).

9. A tension testing aid according to claim 8, wherein, The side of mounting seat (1) is fixed with mounting bracket (12) on baffle (11), and the upper surface of mounting bracket (12) is provided with controller (8).

10. A tension testing aid according to claim 6, wherein, The bottom of the vehicle body (7) is provided with universal wheels (74).

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