Cable tensile test equipment in low-temperature environment

Abstract

The utility model discloses cable tensile test equipment in a low-temperature environment, and relates to the technical field of cable tensile tests. The device comprises a machine body, a transparent cover is hinged to the top of the machine body, a controller is fixedly connected to one side of the machine body, a fixing frame is fixedly connected to the interior of the machine body, an adjusting frame is slidably arranged in the machine body, and a plurality of clamping assemblies are installed at the top of the fixing frame and the top of the adjusting frame; and an adjusting assembly is mounted in the machine body. The device is provided with the clamping assembly, the two ends of the cable are clamped and fixed through the two clamping plates, the clamping and fixing effect of the cable can be greatly improved, the cable is not prone to disengagement when tested in a low-temperature environment, sufficient stability and firmness are effectively provided, and the test process is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cable tensile test, in particular to a cable tensile test device under low-temperature environment. BACKGROUND

[0002] The cable tensile test device is a key device for detecting the mechanical properties of cables. It measures the elongation and breaking strength of cables under tension to evaluate the quality and reliability of cables by applying tension. The device is widely used in cable manufacturing, quality detection and scientific research, and provides important basis for performance optimization and quality control of cable products.

[0003] In practical applications, cables often need to work in various harsh environments, and low-temperature environment is one of them. Low temperature can change the material properties of cables, such as brittle rubber insulation layer and reduced toughness of metal conductor. Therefore, it is crucial to simulate extreme cold environment to evaluate the durability, elastic modulus, tensile strength and other related mechanical properties of cables in such environment to ensure the normal operation of related systems.

[0004] However, the existing cable tensile test device usually only uses a single clamping block to fix one end of the cable when clamping the cable. This traditional clamping method is difficult to provide sufficient stability and firmness because the cable will deform and displace when subjected to tension. Especially in low-temperature environment, the change of cable material properties reduces the friction between the cable and the clamping block, and the one end of the cable is easily separated from the clamping block. Once this happens, the test will be forced to stop, which not only wastes time and resources, but also cannot obtain accurate test data. Therefore, the application provides a cable tensile test device under low-temperature environment. CONTENT OF THE INVENTION

[0005] The purpose of the application is to solve the problem that a single clamping block is difficult to provide sufficient stability and firmness, and the one end of the cable is easily separated from the clamping block. The application provides a cable tensile test device under low-temperature environment.

[0006] In order to achieve the above purpose, the application specifically adopts the following technical scheme:

[0007] A cable tensile test device under low-temperature environment, comprising a machine body, a transparent cover is hinged to the top of the machine body, a controller is fixedly connected to one side of the machine body, a fixing frame is fixedly connected to the inside of the machine body, an adjusting frame is slidably arranged in the inside of the machine body, a plurality of clamping assemblies are installed on the top of the fixing frame and the adjusting frame, an adjusting assembly is installed in the inside of the machine body, a collecting piece is installed in the inside of the machine body, and a monitoring piece is installed on the top of the fixing frame.

[0008] By adopting the above technical scheme, the plurality of clamping assemblies on the top of the fixing frame and the adjusting frame are opened, and then the two ends of the cable are respectively placed in the clamping assemblies on the fixing frame and the adjusting frame, and then the clamping assemblies are controlled to clamp and fix the two ends of the cable. The clamping effect of the cable can be greatly improved by the clamping assemblies arranged at the two ends, so that the cable will not easily come off during the test in the low-temperature environment, thereby avoiding affecting the test process. The adjusting assembly is controlled to drive the adjusting frame to move, thereby driving the plurality of clamping assemblies on the top to move together. During the stretching process, the monitoring piece can also monitor the condition of the cable in real time, and record the pressure and environment under which each cable will break. The finally broken cable will fall into the collecting piece for unified collection.

[0009] Further, the plurality of clamping assemblies comprise a plurality of U-shaped frames fixedly connected to the top of the fixing frame and the adjusting frame, the inner bottom surface of each of the plurality of U-shaped frames is provided with a placing groove, the top of each of the plurality of U-shaped frames is provided with a screw rod one penetratingly connected, the top of each of the plurality of screw rods one is fixedly connected with a fixed block, the fixed block is fixedly connected with an auxiliary rod, the bottom end of each of the plurality of screw rods one is fixedly connected with a clamping plate, and the clamping plate is slidingly connected in the U-shaped frame.

[0010] By adopting the above technical scheme, the clamping of the cable by the clamping plates arranged at the two ends can greatly improve the clamping effect of the cable, so that the cable will not easily come off during the test in the low-temperature environment.

[0011] Further, the bottom of each of the plurality of clamping plates is fixedly connected with an anti-skid pad.

[0012] By adopting the above technical scheme, the anti-skid pad can effectively improve the friction between the clamping plate and the cable, so that the cable is less likely to loosen.

[0013] Further, the adjusting assembly comprises a screw rod two rotatingly connected to one side of the fixing frame, the other end of the screw rod two penetratingly rotatingly connected to one side of the machine body, the other end of the screw rod two fixedly connected with a knob, and the adjusting frame screwedly connected to the screw rod two.

[0014] By adopting the above technical scheme, the knob is twisted to drive the screw rod two to rotate, so that the adjusting frame moves on the screw rod two. By adjusting the position of the adjusting frame, one end of the clamped cable on the top can be moved together. The two ends of the cable are stretched for test by adjusting the position of the adjusting frame.

[0015] Further, one side of the fixing frame is symmetrically fixedly connected with a guide rod, the other end of the guide rod is fixedly connected with the inner wall of the machine body, and the two ends of the adjusting frame are slidingly connected with the guide rod.

[0016] By adopting the technical scheme, the knob is twisted to drive the second screw rod to rotate, so that the adjusting frame moves on the second screw rod under the guidance of the two guide rods.

[0017] Further, the monitoring member includes a plurality of monitoring probes fixedly connected to the top of the fixed frame and the adjusting frame, the top of the fixed frame is uniformly provided with a plurality of sliding grooves, the bottoms of the plurality of U-shaped frames on the top of the fixed frame are fixedly connected with a plurality of sliding blocks, the plurality of sliding blocks are slidingly connected in the sliding grooves respectively, one side of the inside of the sliding groove is fixedly connected with a pressure sensor, the other side of the inside of the sliding groove is fixedly connected with a spring, the other end of the spring is fixedly connected with one end of the sliding block, and the plurality of monitoring probes and the pressure sensor are electrically connected with the controller.

[0018] By adopting the technical scheme, the pressure sensor is used to monitor the change of the pressure in real time, and when the cable is stretched to the limit and broken, the cooperation with the monitoring probe can enable the controller to monitor the stretching limit data of the cable in the first time.

[0019] Further, the collecting member includes a collecting box slidingly connected to one side of the inside of the machine body, one end of the collecting box is fixedly connected with a handle, and the collecting box is located at the bottom of the fixed frame and the adjusting frame.

[0020] By adopting the technical scheme, when it is necessary to clean the fragments, the handle can be pulled to pull out the collecting box from the inside of the machine body, so that the fragments in the collecting box can be quickly cleaned.

[0021] Further, the bottom of the machine body is fixedly connected with a plurality of supporting legs, and the bottoms of the plurality of supporting legs are fixedly connected with rubber pads.

[0022] By adopting the technical scheme, the supporting legs and the rubber pads arranged at the bottom can support the equipment and keep the equipment stable.

[0023] In summary, the present application has at least one of the following beneficial effects:

[0024] 1. The present application is provided with a clamping assembly, the two clamping plates are used to clamp and fix the two ends of the cable, which can greatly improve the clamping and fixing effect of the cable, so that the cable will not easily separate in the low-temperature environment, and sufficient stability and firmness are provided to avoid affecting the test process.

[0025] 2. The present application is provided with a monitoring assembly, the controller is used to record the pressure received by the pressure sensor, when the cable is stretched to the limit and broken, the sliding block will lose the pulling force, and the cooperation with the monitoring probe can enable the controller to monitor the stretching limit data of the cable in the first time. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 This is a three-dimensional structural diagram of the main body of the device in this application.

[0027] Figure 2 This is a three-dimensional structural diagram of the adjustment component in this application.

[0028] Figure 3 This is a three-dimensional structural diagram of the clamping component in this application.

[0029] Figure 4 This is a three-dimensional structural diagram of the monitoring component in this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Body; 2. Transparent cover; 3. Controller; 4. Fixing frame; 5. Adjusting frame; 6. U-shaped frame; 7. Placement slot; 8. Lead screw one; 9. Fixing block; 10. Auxiliary rod; 11. Clamping plate; 12. Anti-slip pad; 13. Monitoring probe; 14. Slide groove; 15. Slider; 16. Pressure sensor; 17. Spring; 18. Lead screw two; 19. Knob; 20. Guide rod; 21. Collection box; 22. Handle; 23. Support leg; 24. Rubber pad. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 —4 provides further detailed description of this application.

[0033] This application discloses a cable tensile testing device for low-temperature environments.

[0034] Reference Figure 1 and Figure 2 A cable tensile testing device for low-temperature environments includes a body 1, a transparent cover 2 hinged to the top of the body 1, a controller 3 fixedly connected to one side of the body 1, a fixed frame 4 fixedly connected inside the body 1, an adjusting frame 5 slidably arranged inside the body 1, multiple clamping components installed on the top of both the fixed frame 4 and the adjusting frame 5, an adjusting component installed inside the body 1, a collecting component installed inside the body 1, a monitoring component installed on the top of the fixed frame 4, and multiple support legs 23 fixedly connected to the bottom of the body 1, with rubber pads 24 fixedly connected to the bottom of each of the multiple support legs 23.

[0035] In use, first the device as a whole is placed in the low temperature box, then the transparent cover 2 is opened and the cable to be tested is taken out, at this time the multiple clamping assemblies on the top of the fixing frame 4 and the adjusting frame 5 can be opened respectively, then the two ends of the cable are respectively placed in the clamping assemblies on the fixing frame 4 and the adjusting frame 5, then the clamping assemblies are operated to clamp and fix the two ends of the cable, through the clamping assemblies arranged at the two ends respectively, the clamping and fixing effect of the cable can be greatly improved, so that the cable will not easily come off during the test in the low temperature environment, so as to avoid affecting the test process, and when the clamping of the two ends of the cable is completed, the adjusting assembly can be operated to drive the adjusting frame 5 to move, so as to drive the multiple clamping assemblies on the top to move together, at this time the two clamping assemblies will move away from each other, so as to stretch the two ends of the cable, the low temperature is continuously released by the low temperature box to monitor the mechanical properties of the cable in the low temperature environment, and during the stretching process, the monitoring piece can also monitor the condition of the cable in real time, and record under what pressure and environment each cable will break, and finally the broken cable will fall into the collecting piece for unified collection, in addition, the support legs 23 and the rubber pads 24 arranged at the bottom can support the device and keep the device stable.

[0036] Referring to Figure 2 and Figure 3 , the multiple clamping assemblies include multiple U-shaped frames 6 fixedly connected on the top of the fixing frame 4 and the adjusting frame 5, the inner bottom surface of each of the multiple U-shaped frames 6 is provided with a placing groove 7, the top of each of the multiple U-shaped frames 6 is penetrated by a threaded connection of a lead screw I 8, the top of each of the multiple lead screws I 8 is fixedly connected with a fixed block 9, the fixed block 9 is fixedly connected with an auxiliary rod 10, the bottom end of each of the multiple lead screws I 8 is fixedly connected with a clamping plate 11, the clamping plate 11 is slidingly connected in the U-shaped frame 6, and the bottom of each of the multiple clamping plates 11 is fixedly connected with an anti-skid pad 12.

[0037] In use, first the two ends of the cable are inserted into the inner part of the placing groove 7, the two ends of the auxiliary rod 10 are held, then the auxiliary rod 10 is rotated to drive the fixed block 9 to rotate, so that the lead screw I 8 drives the clamping plate 11 at the bottom to move close to the inner bottom surface of the U-shaped frame 6, so that the clamping plate 11 clamps and fixes the two ends of the cable, through the clamping plates 11 arranged at the two ends, the clamping of the cable can be greatly improved, so that the cable will not easily come off during the test in the low temperature environment, so as to avoid affecting the test process, and at the same time, the anti-skid pad 12 arranged can effectively improve the friction between the clamping plate 11 and the cable, so that the cable is less likely to loosen.

[0038] Referring to Figure 2 and Figure 3The adjusting assembly comprises a second screw rod 18 rotatably connected to one side of the fixing frame 4, the other end of the second screw rod 18 penetrating through the side of the fuselage 1, the other end of the second screw rod 18 being fixedly connected with a knob 19, and an adjusting frame 5 being threadedly connected to the second screw rod 18. The fixing frame 4 is symmetrically fixedly connected with guide rods 20 at one side, the other ends of the guide rods 20 being fixedly connected with the inner wall of the fuselage 1, and the two ends of the adjusting frame 5 being slidably connected with the guide rods 20.

[0039] In use, the knob 19 is first twisted to drive the second screw rod 18 to rotate, so that the adjusting frame 5 moves on the second screw rod 18 guided by the two guide rods 20. By adjusting the position of the adjusting frame 5, the end of the cable clamped on the top can be moved, and the two ends of the cable are away from each other, so that the two ends of the cable are stretched by adjusting the position of the adjusting frame 5.

[0040] Referring to Figure 3 and Figure 4 The monitoring member comprises a plurality of monitoring probes 13 fixedly connected to the top of the fixing frame 4 and the adjusting frame 5. The top of the fixing frame 4 is uniformly provided with a plurality of sliding grooves 14, the bottoms of the plurality of U-shaped frames 6 at the top of the fixing frame 4 are fixedly connected with sliding blocks 15, the plurality of sliding blocks 15 are slidably connected in the sliding grooves 14 respectively, one side of the inside of the sliding grooves 14 is fixedly connected with pressure sensors 16, the other side of the inside of the sliding grooves 14 is fixedly connected with springs 17, the other end of the springs 17 is fixedly connected with one end of the sliding blocks 15, and the plurality of monitoring probes 13 and the pressure sensors 16 are electrically connected with the controller 3.

[0041] In use, the end of the sliding block 15 is attached to the pressure sensor 16 by the extrusion of the spring 17, and the pressure received by the pressure sensor 16 is recorded by the controller 3 at this time. With the continuous stretching of the two ends of the cable, the sliding block 15 continuously extrudes the pressure sensor 16, and the change of the pressure is monitored in real time by the pressure sensor 16 at this time. When the cable is stretched to the limit and breaks, the sliding block 15 loses the pulling force, and the controller 3 can monitor the tensile limit data of the cable in the first time by cooperating with the monitoring probe 13.

[0042] Referring to Figure 1 and Figure 2 The collecting member comprises a collecting box 21 slidably connected to one side of the inside of the fuselage 1, the one end of the collecting box 21 being fixedly connected with a handle 22, and the collecting box 21 being located at the bottom of the fixing frame 4 and the adjusting frame 5.

[0043] In use, when the cable breaks, a part of the fragments will fall into the inside of the collecting box 21 according to the gravity. When the fragments need to be cleaned, the handle 22 is pulled to pull out the collecting box 21 from the inside of the fuselage 1, so that the fragments in the inside of the collecting box 21 can be quickly cleaned, thereby preventing the fragments from being stuck in the equipment and causing damage to the equipment.

[0044] The implementation principle of the cable stretching test equipment in a low temperature environment is as follows: in use, first, the whole equipment is placed in a low temperature box, then the transparent cover 2 is opened and the cable to be tested is taken out, at this time, the plurality of clamping plates 11 on the top of the fixing frame 4 and the adjusting frame 5 are opened respectively, then the two ends of the cable are inserted into the inside of the placing groove 7, the two ends of the auxiliary rod 10 are held, then the auxiliary rod 10 is rotated to drive the fixing block 9 to rotate, so that the lead screw one 8 drives the clamping plate 11 at the bottom to move close to the bottom surface of the U-shaped frame 6, thus the two ends of the cable are clamped and fixed by the clamping plate 11, the clamping of the cable by the clamping plate 11 at the two ends can greatly improve the clamping and fixing effect of the cable, so that the cable will not easily come off during the test in a low temperature environment, so as to avoid affecting the test process, and the friction between the clamping plate 11 and the cable can be effectively improved by the anti-skid pad 12, so that the cable is less likely to loosen, when the two ends of the cable are clamped, the lead screw two 18 is rotated by rotating the knob 19, so that the adjusting frame 5 moves on the lead screw two 18 guided by the two guide rods 20, by adjusting the position of the adjusting frame 5, the top clamped end of the cable is moved, at this time, the two ends of the cable are away from each other, so that the two ends of the cable are stretched by adjusting the position of the adjusting frame 5, the mechanical properties of the cable in a low temperature environment are monitored by continuously releasing low temperature by the low temperature box, and during the stretching process, the one end of the sliding block 15 is attached to the pressure sensor 16 by the extrusion of the spring 17, at this time, the pressure received by the pressure sensor 16 is recorded by the controller 3, with the continuous stretching of the two ends of the cable, the sliding block 15 continuously extrudes the pressure sensor 16, at this time, the change of the pressure is monitored in real time by the pressure sensor 16, when the cable is stretched to the limit and breaks, the sliding block 15 loses the pulling force, by cooperating with the monitoring probe 13, the controller 3 can monitor the stretching limit data of the cable in the first time, finally, when the cable breaks, a part of the fragments will fall into the inside of the collecting box 21 according to the gravity, when the fragments need to be cleaned, the handle 22 is pulled to pull out the collecting box 21 from the inside of the machine body 1, to quickly clean the fragments in the collecting box 21, so as to prevent the fragments from being stuck in the equipment and causing damage to the equipment.

Claims

1. A cable tensile test apparatus in a low temperature environment, comprising a machine body (1), characterized in that: The top of the fuselage (1) is hingedly connected with a transparent cover (2), one side of the fuselage (1) is fixedly connected with a controller (3), the inside of the fuselage (1) is fixedly connected with a fixed frame (4), the inside of the fuselage (1) is slidably provided with an adjusting frame (5), the top of the fixed frame (4) and the adjusting frame (5) is provided with a plurality of clamping assemblies, the inside of the fuselage (1) is provided with an adjusting assembly, the inside of the fuselage (1) is provided with a collecting piece, and the top of the fixed frame (4) is provided with a monitoring piece.

2. The cable tensile testing apparatus under cryogenic environment according to claim 1, wherein: A plurality of clamping assemblies comprise a plurality of U-shaped frames (6) fixedly connected to the top of the fixed frame (4) and the adjusting frame (5), the inside bottom surface of each of the plurality of U-shaped frames (6) is provided with a placing groove (7), the top of each of the plurality of U-shaped frames (6) is penetratedly and threadedly connected with a lead screw (8), the top of each of the plurality of lead screws (8) is fixedly connected with a fixed block (9), each of the plurality of fixed blocks (9) is fixedly connected with an auxiliary rod (10), the bottom end of each of the plurality of lead screws (8) is fixedly connected with a clamping plate (11), and the clamping plate (11) is slidably connected in the U-shaped frame (6).

3. The low temperature in-situ cable tension testing apparatus of claim 2, wherein: The bottom of each of the plurality of clamping plates (11) is fixedly connected with an anti-skid pad (12).

4. The low temperature cable tension testing apparatus of claim 1, wherein: The adjusting assembly comprises a lead screw (18) rotatably connected to one side of the fixed frame (4), the other end of the lead screw (18) is penetratedly and rotatably connected to one side of the fuselage (1), the other end of the lead screw (18) is fixedly connected with a knob (19), and the adjusting frame (5) is threadedly connected to the lead screw (18).

5. The low temperature in-situ cable tension testing apparatus of claim 4, wherein: One side of the fixed frame (4) is fixedly connected with a guide rod (20) in a symmetrical manner, the other end of the guide rod (20) is fixedly connected with the inner wall of the fuselage (1), and the two ends of the adjusting frame (5) are slidably connected to the guide rod (20).

6. The low temperature cable tension testing apparatus of claim 1, wherein: The monitoring piece comprises a plurality of monitoring probes (13) fixedly connected to the top of the fixed frame (4) and the adjusting frame (5), a plurality of sliding grooves (14) are uniformly formed in the top of the fixed frame (4), a sliding block (15) is fixedly connected to the bottom of each of the plurality of U-shaped frames (6) on the top of the fixed frame (4), each of the plurality of sliding blocks (15) is slidably connected in the sliding groove (14), a pressure sensor (16) is fixedly connected to one side in the sliding groove (14), a spring (17) is fixedly connected to the other side in the sliding groove (14), the other end of the spring (17) is fixedly connected with one end of the sliding block (15), and each of the plurality of monitoring probes (13) and the pressure sensor (16) is electrically connected with the controller (3).

7. The low temperature cable tension testing apparatus of claim 1, wherein: The collecting piece comprises a collecting box (21) slidably connected to one side in the inside of the fuselage (1), one end of the collecting box (21) is fixedly connected with a handle (22), and the collecting box (21) is located at the bottom of the fixed frame (4) and the adjusting frame (5).

8. The low temperature cable tension testing apparatus of claim 1, wherein: The bottom of the fuselage (1) is fixedly connected with a plurality of supporting legs (23), and the bottom of each of the plurality of supporting legs (23) is fixedly connected with a rubber pad (24).

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