Rubber sleeve cable tensile torsion test device

Abstract

The utility model discloses a rubber sleeve cable tensile torsion test device, which belongs to the technical field of cable test and comprises an upper test device and a lower test device. The upper test device comprises a movable clamp, a driving motor, a transmission gear set, a stretching assembly, an electric control cabinet and a top plate. The lower test device comprises a fixing clamp, a bearing plate and a test cabinet. The test device is simultaneously provided with the torsion test mechanism and the mechanism for providing tensile stress, the two mechanisms are complementary but do not interfere with each other and do not interfere with each other, so that the accuracy and reliability of the test are ensured. The tensile stress can be applied to the cable while the cable torsion test is carried out, and the composite force borne by the cable under the actual working condition can be simulated more truly, so that the performance of the cable under different stresses can be evaluated comprehensively.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable testing, in particular to a rubber sheathed cable tensile torsion testing device. Background Art

[0002] Rubber sheathed cables play a vital role in various industrial and commercial applications. However, ensuring their performance and reliability requires a series of performance tests. Among these performance tests, torsion tests are performed, and even tensile forces and other composite forces need to be added during torsion tests to evaluate their performance under different stresses. The combination of these two tests can provide a more comprehensive understanding of the performance of the cable under actual working conditions.

[0003] However, the current limitations of test equipment make it impossible to conduct torsion and tension tests at the same time. The equipment can only conduct one test separately, and cannot meet the needs of conducting two tests at the same time. In addition, rubber-sheathed cables usually contain conductors and insulation layers, and when subjected to tensile and torsion stress, these components may be deformed or damaged, thereby affecting their electrical conductivity. However, the current test equipment makes it difficult to accurately evaluate the electrical conductivity of the cable during the test. Utility Model Content

[0004] The utility model aims to provide a rubber sheathed cable tensile torsion test device to solve the above-mentioned problems in the prior art.

[0005] Provided is a high voltage rubber sheathed cable torsion test device, comprising:

[0006] The upper test device comprises a movable fixture, a driving motor, a transmission gear set, a stretching assembly and an electric control cabinet, wherein the output shaft of the driving motor is connected to the movable fixture through the transmission gear set, the movable fixture comprises a connecting plate and a clamping ring, the clamping ring is slidably connected to the connecting plate, a movable channel for the cable to pass through is penetrated inside the connecting plate, one end of the movable channel is arranged opposite to the clamping ring and the other end is arranged opposite to the stretching assembly, and the electric control cabinet is electrically connected to the driving motor and the stretching assembly respectively;

[0007] The lower test device comprises a fixing fixture, a load-bearing plate and a test cabinet. The fixing fixture is fixedly connected to the load-bearing plate, and the test cabinet is electrically connected to the fixing fixture.

[0008] As a further solution of the utility model: the connecting plate includes a force transmission plate and two clamping plates, the force transmission plate is clamped between the two clamping plates, and the movable channel passes through between the fitting surfaces of the two clamping plates and the inside of the force transmission plate in sequence.

[0009] As a further solution of the utility model: a slide groove is formed between the two clamping plates, the clamping ring includes two semicircular clamping rings, and sliders are respectively provided on both sides of the semicircular clamping rings. After the two semicircular clamping rings are matched, the corresponding sliders on both sides are attached to each other and can slide in the slide groove.

[0010] As a further solution of the utility model: the stretching assembly includes a shell, a fixed chuck and an actuator, the fixed chuck is rotatably connected to the inside of the shell, and the output shaft of the actuator is fixedly connected to the shell.

[0011] As a further solution of the utility model: the stretching assembly also includes a conductive member, the conductive member is fixedly connected to the inside of the shell, and the conductive member is electrically connected to the electric control cabinet.

[0012] As a further solution of the utility model: the output shaft of the driving motor is fixedly passed through the axis of the transmission gear set and an encoder is arranged at the rear end thereof.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] This test device has both an independently operated torsion test mechanism and a tensile stress providing mechanism. The two mechanisms complement each other but do not interfere with each other, ensuring the accuracy and reliability of the test. While conducting a cable torsion test, tensile stress can also be applied to the cable, which can more realistically simulate the composite force that the cable is subjected to under actual working conditions, thereby comprehensively evaluating the performance of the cable under different stresses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of a rubber sheathed cable tensile torsion test device;

[0017] Figure 2 A schematic diagram of the structure of the upper test device provided by an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the structure of a movable clamp provided in an embodiment of the utility model;

[0019] Figure 4 A schematic structural diagram of a stretching assembly provided in an embodiment of the utility model.

[0020] In the figure: 1. upper test device; 11. movable fixture; 111. connecting plate; 1111. force transmission plate; 1112. clamping plate; 1113. slide groove; 112. clamping ring; 1121. semicircular clamping ring; 1122. slider; 113. movable channel; 12. driving motor; 13. transmission gear set; 14. stretching assembly; 141. housing; 142. fixed chuck; 143. actuator; 144. conductive part; 15. electric control cabinet; 2. lower test device; 21. fixed fixture; 22. load-bearing plate; 23. test cabinet; 3. encoder. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 As shown, in the embodiment of the utility model, a rubber sheathed cable tensile torsion test device includes an upper test device 1 and a lower test device 2. The upper test device 1 includes a movable fixture 11, a drive motor 12, a transmission gear set 13, a tensile assembly 14 and an electric control cabinet 15. The output shaft of the drive motor 12 is connected to the movable fixture 11 through the transmission gear set 13. The movable fixture 11 includes a connecting plate 111 and a clamping ring 112. The clamping ring 112 is slidably connected to the connecting plate 111. The connecting plate 111 is penetrated by a movable channel 113 for the cable to pass through. One end of the movable channel 113 is arranged opposite to the clamping ring 112 and the other end is arranged opposite to the tensile assembly 14. The electric control cabinet 15 is electrically connected to the drive motor 12 and the tensile assembly 14 respectively. The lower test device 2 includes a fixed fixture 21, a load-bearing plate 22 and a test cabinet 23. The fixed fixture 21 is fixedly connected to the load-bearing plate 22, and the test cabinet 23 is electrically connected to the fixed fixture 21.

[0024] Before the test, one end of the cable is fixed in the fixed fixture 21 of the lower test device 2, and the other end passes through the connecting plate 111 and the clamping ring 112 and is fixed by the clamping ring 112, and the passed part is then fixed to the tensile assembly 14. The upper test device 1 is provided with a top plate, and the movable fixture 11 is rotatably connected to the top plate. During the test, the drive motor 12 is started, and the drive motor 12 drives the movable fixture 11 to rotate through the transmission gear set 13. Specifically, the connecting plate 111 is fixedly connected to the corresponding gear axis in the transmission gear set 13, and the transmission gear set 13 drives the connecting plate 111 to rotate through the meshing transmission of several gears, and the connecting plate 111 drives the clamping ring 112 to rotate at the same time, and the clamping ring 112 drives the cable to rotate, while the other end of the cable does not rotate under the restriction of the fixed fixture 21 and the bearing plate 22, so that the cable is twisted as a whole. While performing the torsion test, the tensile assembly 14 is started to stretch the cable, and the clamping ring 112 can slide along the connecting plate 111, and at the same time, tensile stress is applied to the cable, so as to realize the torsion test under composite stress.

[0025] In addition, while conducting the torsion test, the electrical control cabinet 15 can not only control the movement of the drive motor 12 and the tension assembly 14, but also transmit power to one end of the cable. The other end of the cable receives current through the test cabinet 23 to conduct a conductivity test under torsion.

[0026] See also Figure 3 As shown, the connecting plate 111 includes a force transmission plate 1111 and two clamping plates 1112. The force transmission plate 1111 is clamped between the two clamping plates 1112, and the movable channel 113 passes through the fitting surfaces of the two clamping plates 1112 and the inside of the force transmission plate 1111 in sequence. One end of the force transmission plate 1111 is fixedly connected to the corresponding gear axis of the transmission gear set 13 for transmitting torque. The other end of the force transmission plate 1111 is fixed to the two clamping plates 1112 by bolts. The clamping ring 112 is fixed between the two clamping plates 1112 by a detachable connection method, which is convenient for loading and unloading of various components before and after the test, and applying pressure to the clamping ring 112 to improve the fixing effect of the clamping ring 112 on the cable. The fitting surfaces of the two clamping plates 1112 are each provided with a groove, and the inside of the force transmission plate 1111 is provided with a through hole, and after being combined, a movable channel 113 is formed for the cable to pass through.

[0027] Furthermore, a slide groove 1113 is formed between the two clamping plates 1112, which has a limiting and clamping effect on the clamping ring 112. The clamping ring 112 includes two semicircular clamping rings 1121, and sliders 1122 are respectively provided on both sides of the semicircular clamping rings 1121. After the two semicircular clamping rings 1121 cooperate, the corresponding sliders 1122 on both sides fit each other and can slide in the slide groove 1113. The two semicircular clamping rings 1121 compress the cable to fix the cable inside, and the inner concave surface of the semicircular clamping ring 1121 is arranged with bumps to increase friction to improve the fixing effect. The two clamping plates 1112 cooperate with the slide groove 1113 and the slider 1122 so that the clamping ring 112 has the freedom to slide in the length direction of the slide groove 1113 and the freedom to rotate with the movable clamp 11 as a whole.

[0028] See also Figure 1 and Figure 4 As shown, the tensile assembly 14 includes a housing 141, a fixed chuck 142 and an actuator 143. The fixed chuck 142 is rotatably connected to the inside of the housing 141, and the output shaft of the actuator 143 is fixedly connected to the housing 141. The actuator 143 is fixed to the surrounding frame, and only the piston rod part can move telescopically. The fixed chuck 142 can fix the cable end by fasteners such as pneumatic claws. When the cable as a whole begins to twist, the cable transmits the torque to the fixed chuck 142 to rotate the fixed chuck 142 relative to the housing 141, eliminating the torque effect at the rear end of the cable and preventing the fixed end of the cable from twisting and winding. The actuator 143 is one of a cylinder, a hydraulic cylinder or an electric cylinder, and drives the housing 141 to move in a directional manner through the piston rod to complete the action of applying tensile stress to the cable. Therefore, the tensile assembly 14 can apply tensile stress to the cable while ensuring that the fixed end of the cable will not twist and entangle, ensuring that the test is carried out normally.

[0029] The tensioning assembly 14 further includes a conductive member 144, which is fixedly connected to the interior of the housing 141 and electrically connected to the electric control cabinet 15. The cable is fixed by the fixing chuck 142 and contacts the conductive member 144, so that the electric control cabinet 15 can transmit current to the cable through the conductive member 144. The cable and the conductive member 144 are in non-fixed contact, ensuring that the cable can be connected to the conductive member 144 even when the cable is in a rotating state.

[0030] The output shaft of the driving motor 12 is fixedly passed through the rear end of the axis of the transmission gear set 13 and is provided with an encoder 3. The number of rubber cable torsion tests can be counted, and the test data can be viewed in the test cabinet 23 in the test device assembly 2 below to achieve accurate counting of the number of torsion.

[0031] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A rubber sheathed cable tensile torsion test device, characterized in that: include: The upper test device (1) comprises a movable fixture (11), a driving motor (12), a transmission gear set (13), a stretching assembly (14) and an electric control cabinet (15), wherein the output shaft of the driving motor (12) is connected to the movable fixture (11) by transmission via the transmission gear set (13), the movable fixture (11) comprises a connecting plate (111) and a clamping ring (112), the clamping ring (112) is slidably connected to the connecting plate (111), a movable channel (113) for a cable to pass through is penetrated inside the connecting plate (111), one end of the movable channel (113) is arranged opposite to the clamping ring (112) and the other end is arranged opposite to the stretching assembly (14), and the electric control cabinet (15) is electrically connected to the driving motor (12) and the stretching assembly (14) respectively; The lower test device (2) comprises a fixing fixture (21), a bearing plate (22) and a test cabinet (23), wherein the fixing fixture (21) is fixedly connected to the bearing plate (22), and the test cabinet (23) is electrically connected to the fixing fixture (21).

2. A rubber sheathed cable tensile torsion test device according to claim 1, characterized in that: The connecting plate (111) comprises a force transmission plate (1111) and two clamping plates (1112); the force transmission plate (1111) is clamped between the two clamping plates (1112); and the movable channel (113) passes through between the contact surfaces of the two clamping plates (1112) and inside the force transmission plate (1111) in sequence.

3. A rubber sheathed cable tensile torsion test device according to claim 2, characterized in that: A slide groove (1113) is formed between the two clamping plates (1112), and the clamping ring (112) includes two semicircular clamping rings (1121). Slide blocks (1122) are respectively arranged on both sides of the semicircular clamping rings (1121). After the two semicircular clamping rings (1121) are matched, the corresponding slide blocks (1122) on both sides are attached to each other and can slide in the slide groove (1113).

4. A rubber sheathed cable tensile torsion test device according to claim 1, characterized in that: The stretching assembly (14) comprises a housing (141), a fixed chuck (142) and an actuator (143); the fixed chuck (142) is rotatably connected to the inside of the housing (141); and the output shaft of the actuator (143) is fixedly connected to the housing (141).

5. A rubber sheathed cable tensile torsion test device according to claim 4, characterized in that: The stretching assembly (14) further comprises a conductive member (144), wherein the conductive member (144) is fixedly connected to the interior of the housing (141), and the conductive member (144) is electrically connected to the electric control cabinet (15).

6. A rubber sheathed cable tensile torsion test device according to claim 1, characterized in that: An encoder (3) is arranged at the rear end of the axis of the output shaft of the driving motor (12) which is fixedly passed through the transmission gear set (13).

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