Tensile testing device for cable production and processing

Abstract

The utility model discloses a tensile testing device for cable production and processing, which relates to the technical field of cable testing and comprises a cylinder, a first clamping block and a second clamping block are arranged on the outer wall of the cylinder, a cable sample is arranged between the first clamping block and the second clamping block, a first box body and a second box body are arranged outside the cable sample, and the first box body and the second box body are arranged in the cylinder. A heating rod is arranged in the first box body, a cooling rod is arranged in the second box body, rotating parts are arranged below the first box body and the second box body, and the rotating parts are used for rotating the cooling rod or the heating rod to rotate along the center of a cable sample. Compared with the prior art, the test device has the advantage that the comprehensiveness and the integrity of test data are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of cable testing, in particular to a tensile testing device for cable production and processing. Background Art

[0002] Cable is a key basic material widely used in electrical, communication, petrochemical and other fields. Its quality directly affects the safety and stability of the entire system. Therefore, it is very important to conduct strict testing and inspection on the tensile properties of cable products.

[0003] The current cable tensile test method is to first cut off a part of the cable for sampling, then clamp the two ends of the cable sample with a clamp, and then start the machine to move the clamps at both ends in opposite directions at the same time until the cable breaks. The tensile test data will be transmitted to the smart device, and compared with the qualified value to determine whether the cable strength is qualified; however, the experimental environment of this type of tensile test is usually in the factory, which is different from the actual cable usage scenario. For example, some cables are buried underground all year round, and the ambient temperature around them is different in summer and winter. Different temperatures have different effects on the cable surface. Therefore, this conventional tensile test method is difficult to take into account the actual use environment of the cable, which may result in incomplete test data.

[0004] To this end, we propose a tensile testing device for cable production and processing. Utility Model Content

[0005] The purpose of the utility model is to provide a tensile test device for cable production and processing to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a tensile test device for cable production and processing, comprising a cylinder, the outer wall of the cylinder is provided with a clamping block 1 and a clamping block 2, a cable sample is arranged between the clamping block 1 and the clamping block 2, a box body 1 and a box body 2 are arranged outside the cable sample, a heating rod is arranged inside the box body 1, a cooling rod is arranged inside the box body 2, and a rotating member is arranged below the box body 1 and the box body 2, and the rotating member is used to rotate the cooling rod or the heating rod to rotate along the center of the cable sample.

[0006] Preferably, the rotating part includes an intermittent gear at the bottom of the heating rod, a shaft body 1 is provided inside the intermittent gear, an arc-shaped rack is provided on the outer wall of the shaft body 1, a spur gear 1 meshing with the intermittent gear is provided on one side, a shaft body 2 is provided inside the spur gear 1, a bevel gear 1 is provided on the outer wall of the shaft body 2, a connecting rod 1 is provided on one side of the shaft body 2, a connecting rod 2 is provided on one end of the connecting rod 1, a shaft body 3 is provided on the inner wall of the connecting rod 2, a spur gear 2 is provided on the outer wall of the shaft body 3, a bevel gear 2 is also provided on the outer wall of the shaft body 3, the bevel gear 2 and the bevel gear 1 are meshed with each other, a spur gear 2 is provided on one side of the spur gear 2 which is meshed with the bevel gear 1, a shaft body 4 is provided at the bottom of the flat rack, a connecting plate is provided on the outside of the shaft body 4, and one end of the connecting plate is fixedly connected to the clamping block 2.

[0007] Preferably, a fixed shaft is provided on the inner wall of the cylinder, a bending rod is provided on the outer wall of the fixed shaft, the box body one and the box body two are located inside the bending rod, a limiting rod one and a limiting rod two are provided inside the bending rod, the limiting rod one passes through the box body one, and the limiting rod two passes through the box body two.

[0008] Preferably, a magnet is provided inside the bending rod, a fixing rod is provided on one side of the magnet, and the end of the bending rod is in an arc shape and has magnetism.

[0009] Preferably, a pointer is provided on the outer wall of the clamping block 1, and a plurality of scale lines are provided on the outer wall of the cylinder.

[0010] Preferably, a torsion spring 1 is provided between the shaft 1 and the arc-shaped rack, and the elastic force of the torsion spring 1 rotates the outer wall of the arc-shaped rack to coincide with the outer wall of the intermittent gear under normal conditions.

[0011] Preferably, a torsion spring 2 is provided between the shaft body 4 and the connecting plate, and the elastic force of the torsion spring 2 rotates the flat rack to be perpendicular to the connecting plate under normal conditions.

[0012] Preferably, a spring is provided between the second connecting rod and the bending rod, and the spring, under normal elastic force, pulls the second flat gear to move to mesh with the flat rack.

[0013] The utility model has at least the following beneficial effects:

[0014] In the utility model, the bending rod is rotated to drive the box body 1 to turn to the cable sample until the end of the bending rod and the magnet are mutually attracted and limited. During this process, when the outer wall of the cable sample contacts the arc-shaped rack at the bottom of the box body 1, the torsion spring 1 rotates to rotate the arc-shaped rack toward the inside of the box body 1 until the cable sample loses contact with the arc-shaped rack. The elastic force of the torsion spring 1 will restore the arc-shaped rack. In this state, the cable sample is in the central area of ​​the heating rod and begins to conduct heat to the cable sample to simulate the working state of the cable sample in a high-temperature environment. Similarly, the limiting rod 1 can also be used to limit the box body 2 to simulate the working state of the cable in a cold environment. This device uses the mutual switching of the box body 1 and the box body 2 to simulate the working state of the cable at different temperatures in a real environment. Compared with the prior art, the comprehensiveness and integrity of the test data are enhanced.

[0015] The descending flat rack will drive the heating rod or cooling rod above the intermittent gear to rotate. The temperature source rotating around the cable sample will conduct energy to its surface more evenly, which is conducive to accurately simulating the actual use environment of the cable and making the test data of the tensile test more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A magnified view of the structure of the middle A area;

[0018] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0019] Figure 4 This is a cross-sectional view of the cylinder structure of the utility model;

[0020] Figure 5 This is a cross-sectional view of the bending rod structure of the utility model;

[0021] Figure 6 For this utility model Figure 5 A magnified view of the structure of the middle B region;

[0022] Figure 7 This is a cross-sectional view of the bending rod structure of the utility model at another angle;

[0023] Figure 8 This is a structural cross-sectional view of the utility model from another angle;

[0024] Fig. 9 For this utility model Figure 8 Enlarged view of the structure of the middle C region.

[0025] In the figure: 1-cylinder; 2-clamping block 1; 3-clamping block 2; 4-cable sample; 5-box body 1; 6-box body 2; 7-heating rod; 8-cooling rod; 9-rotating member; 901-intermittent gear; 902-shaft body 1; 903-arc rack; 904-flat gear 1; 905-shaft body 2; 906-bevel gear 1; 907-connecting rod 1; 908-connecting rod 2; 909-shaft body 3; 9010-flat gear 2; 9011-bevel gear 2; 9012-flat rack; 9013-shaft body 4; 9014-connecting plate; 10-fixed shaft; 11-bending rod; 12-limiting rod 1; 13-limiting rod 2; 14-magnet; 15-fixed rod; 16-pointer; 17-scale line; 18-torsion spring 1; 19-torsion spring 2; 20-spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-9 The utility model provides a technical solution: a tensile test device for cable production and processing, comprising a cylinder 1, a clamping block 2 and a clamping block 3 are arranged on the outer wall of the cylinder 1, a cable sample 4 is arranged between the clamping block 1 and the clamping block 3, the clamping block 1 2 and the clamping block 2 3 can slide freely on the cylinder 1 under the premise of clamping the cable sample 4, and the driving power of both comes from an external motor. This utility model only shows the clamping area, and the rest of the parts can be traced in the prior art;

[0028] The cable sample 4 is provided with a box body 1 5 and a box body 2 6 on the outside, a heating rod 7 is provided inside the box body 1 5, and a cooling rod 8 is provided inside the box body 2 6. The internal structures of the box bodies 1 5 and 2 6 are the same except that the heating rod 7 and the cooling rod 8 are distinguished. A rotating member 9 is provided at the bottom of the box body 1 5 and the box body 2 6, and the rotating member 9 is used to rotate the cooling rod 8 or the heating rod 7 along the center of the cable sample 4; a fixed shaft 10 is provided on the inner wall of the cylinder 1 and is fixedly connected thereto, a bending rod 11 is provided on the outer wall of the fixed shaft 10 and is rotatably connected thereto, and the overall shape of the bending rod 11 is L-shaped, the box body 1 5 and the box body 2 6 are located inside the bending rod 11, and the box body 1 5 and the box body 2 6 are both slidably connected to the bending rod 11, and the inner wall of the bending rod 11 is provided with a fixed shaft 10 and is fixedly connected thereto. The first limiting rod 12 and the second limiting rod 13 are provided in the box body 15, the limiting rod 12 passes through the box body 15 and is slidably connected thereto, the limiting rod 13 passes through the box body 26 and is slidably connected thereto, a magnet 14 is provided inside the bending rod 11, a fixing rod 15 is provided on one side of the magnet 14 and is fixedly connected thereto, and the end of the bending rod 11 is an arc surface and has a magnetic attraction with the magnet 14; by switching between the box body 15 and the box body 26, the natural environment around the cable sample 4 at different temperatures is simulated to enhance the extensiveness and comprehensiveness of the inspection effect, and the rotating member 9 can drive the heating rod 7 and the cooling rod 8 around the cable sample 4 to rotate adaptively, further making the temperature conduction of the outer wall of the cable sample 4 more uniform, and improving the accuracy of the tensile test;

[0029] The rotating member 9 includes an intermittent gear 901 at the bottom of the heating rod 7. There are two intermittent gears 901, which are respectively located below the heating rod 7 and the cooling rod 8 and are fixedly connected to the two. At the same time, the two intermittent gears 901 are also rotatably connected to the box body 1 5 and the box body 2 6 respectively. A shaft body 1 902 is provided inside the intermittent gear 901 and is fixedly connected thereto. An arc-shaped rack 903 is provided on the outer wall of the shaft body 1 902 and is rotatably connected thereto. A torsion spring 18 is provided between the shaft body 1 902 and the arc-shaped rack 903. The two ends of the torsion spring 18 are respectively connected to the shaft body 1 902 and the arc-shaped rack 90 3 is fixedly connected. Under normal conditions, the elastic force of the torsion spring 18 rotates the outer wall of the arc-shaped rack 903 to coincide with the outer wall of the intermittent gear 901. One side of the intermittent gear 901 is provided with a flat gear 1 904 meshing with it. The interior of the flat gear 1 904 is provided with a shaft body 2 905 and fixedly connected with it. The outer wall of the shaft body 2 905 is provided with a bevel gear 1 906 and fixedly connected with it. One side of the shaft body 2 905 is provided with a connecting rod 1 907 and is rotatably connected with it. One end of the connecting rod 1 907 is provided with a connecting rod 2 908 and is fixedly connected with it. The inner wall of the connecting rod 2 908 is provided with The shaft body 3 909 is rotatably connected thereto, the connecting rod 2 908 is slidably connected to the bending rod 11, the outer wall of the shaft body 3 909 is provided with a flat gear 2 9010 and fixedly connected thereto, a spring 20 is provided between the connecting rod 2 908 and the bending rod 11, and the two ends of the spring 20 are respectively fixedly connected to the connecting rod 2 908 and the bending rod 11. Under normal elastic force, the spring 20 pulls the flat gear 2 9010 to move to mesh with the flat rack 9012. The outer wall of the shaft body 3 909 is also provided with a bevel gear 2 9011 and fixedly connected thereto, and the bevel gear 2 9011 meshes with the bevel gear 1 906. A flat rack 9012 meshing with the flat gear 9010 is provided on one side, a shaft 9013 is provided at the bottom of the flat rack 9012 and fixedly connected to the shaft 9013, a connecting plate 9014 is provided on the outside of the shaft 9013 and rotatably connected to the shaft 9013, one end of the connecting plate 9014 is fixedly connected to the clamping block 3, a torsion spring 19 is provided between the shaft 9013 and the connecting plate 9014, and the two ends of the torsion spring 19 are fixedly connected to the shaft 9013 and the connecting plate 9014 respectively. Under normal conditions, the elastic force of the torsion spring 19 rotates the flat rack 9012 to be perpendicular to the connecting plate 9014.

[0030] When switching between box body 1 5 and box body 2 6, the elasticity of spring 20 can be used to move connecting rod 2 908 a short distance outward, so that flat gear 1 904 and intermittent gear 901 are no longer engaged, making it easier to switch between box body 1 5 and box body 2 6; in the process of rotating the bending rod 11 toward the cable sample 4, the flat rack 9012 can be rotated downward first until the bending rod 11 passes over the flat rack 9012 and then stops rotating. The elastic force of torsion spring 2 19 will automatically reset the flat rack 9012, and the flat rack 9012 will engage with flat gear 2 9010 for transmission.

[0031] Before starting the tensile test, first determine the ambient temperature to be tested, use the clamping block 1 2 and the clamping block 2 3 to initially clamp the cable sample 4, and then drive the box body 1 5 to turn to the cable sample 4 by rotating the bending rod 11, until the end of the bending rod 11 and the magnet 14 are mutually attracted and limited. During this process, when the outer wall of the cable sample 4 contacts the arc-shaped rack 903 at the bottom of the box body 1 5, the torsion spring 18 rotates to rotate the arc-shaped rack 903 toward the inside of the box body 1 5, until the cable sample 4 loses contact with the arc-shaped rack 903, and the elastic force of the torsion spring 18 will restore the arc-shaped rack 903. In this state, the cable sample 4 is in the central area of ​​the heating rod 7, and heat conduction is started to the cable sample 4 to simulate the working state of the cable sample 4 in a high temperature environment; similarly, the limit rod 12 can be pulled out from the inside of the box body 1 5, the box body 2 6 can be slid to the initial position of the box body 1 5, and the limit rod 12 can be used again to limit the box body 2 6 to simulate the working state of the cable in a cold environment; this equipment uses the mutual switching of the box body 1 5 and the box body 2 6 to simulate the working state of the cable at different temperatures in a real environment, which enhances the comprehensiveness and integrity of the test data compared with the prior art;

[0032] On the other hand, after the above actions are completed, the external motor can be started to drive the clamping block 1 2 and the clamping block 2 3 to move away from each other at the same time, and then the clamping block 2 3 will drive the flat rack 9012 and the flat gear 2 9010 to engage and transmit with each other, and then the bevel gear 2 9011 will engage and transmit with the bevel gear 1 906, and then drive the flat gear 1 904 and the intermittent gear 901 to engage and rotate, and finally the heating rod 7 or cooling rod 8 above the intermittent gear 901 will also rotate accordingly. The temperature source rotating around the cable sample 4 will conduct energy to its surface more evenly, which is conducive to accurately simulating the actual use environment of the cable and making the test data of the tensile test more accurate.

[0033] In addition, the outer walls of the clamping blocks 1 2 and 2 3 are provided with pointers 16 and fixedly connected thereto, and the outer wall of the cylinder 1 is provided with a plurality of scale lines 17. As the clamping blocks 1 2 and 2 3 are displaced, the maximum tensile length of the cable sample 4 can also be effectively read according to the displacement distance of the pointer 16, thereby further enhancing the data integrity of the test.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for cable production and processing, comprising a cylinder (1), the outer wall of the cylinder (1) is provided with a clamping block 1 (2) and a clamping block 2 (3), a cable sample (4) is provided between the clamping block 1 and the clamping block 2 (3), characterized in that: The cable sample (4) is provided with a box body 1 (5) and a box body 2 (6) on the outside, a heating rod (7) on the inside of the box body 1 (5), and a cooling rod (8) on the inside of the box body 2 (6). A rotating member (9) is provided below the box body 1 (5) and the box body 2 (6), and the rotating member (9) is used to rotate the cooling rod (8) or the heating rod (7) along the center of the cable sample (4).

2. A tensile testing device for cable production and processing according to claim 1, characterized in that: The rotating member (9) comprises an intermittent gear (901) at the bottom of the heating rod (7), a shaft body (902) is provided inside the intermittent gear (901), an arc-shaped rack (903) is provided on the outer wall of the shaft body (902), a flat gear (904) meshing with the intermittent gear (901) is provided on one side, a shaft body (905) is provided inside the flat gear (904), a bevel gear (906) is provided on the outer wall of the shaft body (905), a connecting rod (907) is provided on one side of the shaft body (905), and a connecting rod (908) is provided at one end of the connecting rod (907), The inner wall of the connecting rod 2 (908) is provided with a shaft body 3 (909), the outer wall of the shaft body 3 (909) is provided with a flat gear 2 (9010), the outer wall of the shaft body 3 (909) is also provided with a bevel gear 2 (9011), the bevel gear 2 (9011) and the bevel gear 1 (906) are meshed with each other, one side of the flat gear 2 (9010) is provided with a flat rack (9012) meshed therewith, the bottom of the flat rack (9012) is provided with a shaft body 4 (9013), the outside of the shaft body 4 (9013) is provided with a connecting plate (9014), and one end of the connecting plate (9014) is fixedly connected to the clamping block 2 (3).

3. The tensile testing device for cable production and processing according to claim 1, characterized in that: The inner wall of the cylinder (1) is provided with a fixed shaft (10), the outer wall of the fixed shaft (10) is provided with a bending rod (11), the box body 1 (5) and the box body 2 (6) are located inside the bending rod (11), and the inside of the bending rod (11) is provided with a limiting rod 1 (12) and a limiting rod 2 (13), the limiting rod 1 (12) passes through the box body 1 (5), and the limiting rod 2 (13) passes through the box body 2 (6).

4. A tensile testing device for cable production and processing according to claim 3, characterized in that: A magnet (14) is provided inside the bending rod (11), a fixing rod (15) is provided on one side of the magnet (14), and the end of the bending rod (11) is in the form of an arc surface and has magnetism.

5. The tensile testing device for cable production and processing according to claim 1, characterized in that: The outer wall of the clamping block 1 (2) is provided with a pointer (16), and the outer wall of the cylinder (1) is provided with a plurality of scale lines (17).

6. A tensile testing device for cable production and processing according to claim 2, characterized in that: A torsion spring (18) is provided between the shaft (902) and the arc-shaped rack (903). Under normal conditions, the elastic force of the torsion spring (18) rotates the outer wall of the arc-shaped rack (903) to coincide with the outer wall of the intermittent gear (901).

7. A tensile testing device for cable production and processing according to claim 2, characterized in that: A torsion spring 2 (19) is provided between the shaft body 4 (9013) and the connecting plate (9014). Under normal conditions, the elastic force of the torsion spring 2 (19) rotates the flat rack (9012) to be perpendicular to the connecting plate (9014).

8. The tensile testing device for cable production and processing according to claim 2, characterized in that: A spring (20) is provided between the second connecting rod (908) and the bending rod (11). Under normal elastic force, the spring (20) pulls the second flat gear (9010) to move to mesh with the flat rack (9012).

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