Cold and hot cycle alternating testing machine

Abstract

The utility model provides a cold and hot cycle alternating testing machine which is used for detecting the performance of a to-be-tested cable. The cold and hot cycle alternating testing machine comprises a rack; the supporting mechanism is mounted on the rack, and a cable to be tested is detachably connected to the supporting mechanism; the cold and hot circulation mechanism comprises a heating assembly and a cooling assembly which are arranged side by side in the extending direction of the cable to be tested, the heating assembly and the cooling assembly both define an annular space, and the cable to be tested is located in a coverage area of the annular space; and the driving assembly is configured to drive at least one of the supporting mechanism and the cold and hot circulating mechanism to move along the extension direction of the cable to be tested, so that the cable to be tested reciprocates in the heating assembly and the cooling assembly. According to the cold and hot cycle alternate testing machine, cable cold and hot cycle alternate testing is achieved, meanwhile, it is guaranteed that the whole periphery of a cable can be exposed in a cold and hot environment, and the accuracy of a testing result is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable test, in particular to a cold and hot cycle alternating test machine. BACKGROUND

[0002] When the power cable is in normal operation, the conductor will be affected by heat due to the passage of current, resulting in an increase in temperature. In the case where the ambient temperature changes, the cable will continuously undergo the process of cold and hot cycle, thereby generating thermal stress and mechanical stress. These stress factors will cause the performance of the power cable to deteriorate over a long period of time, and even cause faults such as cracking, aging, and leakage. Therefore, the performance of the power cable needs to be tested before it is put into use.

[0003] The existing cold and hot cycle alternating test machine drives the sample placed on the sample plate to reciprocate between the cold plate and the hot plate below, and drives the sample to be attached to the cold plate or the hot plate to realize the cycle test in the cold and hot environment.

[0004] However, with such a setting, the bottom of the sample plate will partially block the outside of the cable, thereby affecting the accuracy of the test results. CONTENT OF THE INVENTION

[0005] The present application provides a cold and hot cycle alternating test machine to solve the problem of partial obstruction of the outside of the cable during testing of the existing cold and hot cycle alternating test machine.

[0006] The present application provides a cold and hot cycle alternating test machine for detecting the performance of a cable to be tested. The cold and hot cycle alternating test machine comprises a rack, a support mechanism installed on the rack, a cable to be tested which is detachably connected to the support mechanism, a cold and hot cycle mechanism comprising a heating assembly and a cooling assembly arranged side by side along the extension direction of the cable to be tested, the heating assembly and the cooling assembly both enclosing an annular space, and the cable to be tested being located in the coverage area of the annular space, and a driving assembly configured to drive at least one of the support mechanism and the cold and hot cycle mechanism to move along the extension direction of the cable to be tested, so that the cable to be tested reciprocates in the heating assembly and the cooling assembly.

[0007] In one possible implementation, the heating assembly comprises a first sleeve and an annular heating plate, and the annular heating plate is attached to the inner wall of the first sleeve; the cooling assembly comprises a second sleeve and a condenser tube, and the condenser tube spirally extends along the inner wall of the second sleeve.

[0008] In one possible implementation, the heating assembly further comprises a first connecting plate connected between the top wall of the rack and the first sleeve; and the cooling assembly further comprises a second connecting plate connected between the top wall of the rack and the second sleeve.

[0009] In a possible implementation, the cooling assembly further comprises a water inlet joint and a water outlet joint, both of which are mounted on the second sleeve and are in communication with the condensing pipe.

[0010] In a possible implementation, the support mechanism comprises: a transmission assembly configured to reciprocate along the extension direction of the cable to be tested under the driving of the driving assembly; a first support assembly having one end connected to the transmission assembly and the other end connected to the first end of the cable to be tested; and a second support assembly having one end connected to the transmission assembly and the other end connected to the second end of the cable to be tested.

[0011] In a possible implementation, the transmission assembly comprises: a transmission member slidingly arranged on the bottom wall of the rack and slidable along the extension direction of the cable to be tested; and a connecting frame connected to the top of the transmission member, the first support assembly and the second support assembly being both connected to the side surface of the connecting frame away from the transmission member.

[0012] In a possible implementation, the transmission assembly further comprises a rolling structure connected to the connecting frame and rolling along the bottom wall of the rack.

[0013] In a possible implementation, the connecting frame is provided with a guide groove on the side facing the bottom wall of the rack; and the transmission assembly further comprises a guide member connected to the bottom wall of the rack and moving along the guide groove of the connecting frame.

[0014] In a possible implementation, the first support assembly comprises a first support rod having one end connected to the transmission assembly and a first wire fixing device connected to the other end of the first support rod, the first wire fixing device being configured to fix the first end of the cable to be tested; and the second support assembly comprises a second support rod having one end connected to the transmission assembly and a second wire fixing device connected to the other end of the second support rod, the second wire fixing device being configured to fix the second end of the cable to be tested.

[0015] In a possible implementation, the driving assembly comprises a motor and a transmission rod, the motor being mounted on the rack and having an output end connected to the transmission rod, and the support mechanism being in transmission connection with the transmission rod.

[0016] The application provides a cold-hot cycle alternating test machine for detecting the performance of a cable to be tested. The cold-hot cycle alternating test machine comprises a rack, a support mechanism mounted on the rack and detachably connected to the cable to be tested, a cold-hot cycle mechanism, and a driving assembly. The cold-hot cycle mechanism comprises a heating assembly and a cooling assembly arranged side by side along the extension direction of the cable to be tested, both the heating assembly and the cooling assembly enclosing an annular space, and the cable to be tested being located in the coverage area of the annular space. The driving assembly is configured to drive at least one of the support mechanism and the cold-hot cycle mechanism to move along the extension direction of the cable to be tested, so that the cable to be tested reciprocates in the heating assembly and the cooling assembly.

[0017] In this way, the cable to be tested can be loaded on the support mechanism for testing, and under the action of the driving assembly, the cable to be tested can reciprocate in the annular space surrounded by the heating assembly and the annular space surrounded by the cooling assembly, so as to realize the cyclic alternating test of the cable to be tested in the cold and hot environment. Since the annular spaces surrounded by the heating assembly and the cooling assembly are around the outside of the cable to be tested, the cable to be tested can be uniformly and stably heated or cooled around, solving the problem of partial shielding of the cable in the prior art and improving the stability and reliability of the test results. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description can also be obtained by those skilled in the art without creative effort.

[0019] Figure 1 A perspective view of a cold and hot cyclic alternating test machine according to an embodiment of the present application is provided.

[0020] Figure 2 A structure schematic view of a cold and hot cyclic alternating test machine according to an embodiment of the present application is provided.

[0021] Figure 3 A connection schematic view of a connecting frame and a guide piece according to an embodiment of the present application is provided.

[0022] Explanation of reference signs:

[0023] 100, rack; 110, avoiding groove;

[0024] 210, driving assembly; 211, driving piece; 212, connecting frame; 2121, guide groove; 213, guide piece; 220, first support assembly; 221, first support rod; 222, first wire fixing device; 223, first baffle; 230, second support assembly; 231, second support rod; 232, second wire fixing device; 233, second baffle; 240, rolling structure;

[0025] 310, heating assembly; 311, first sleeve; 312, annular heating plate; 313, first connecting plate; 320, cooling assembly; 321, second sleeve; 3211, water inlet joint; 3212, water outlet joint; 322, condenser pipe; 323, second connecting plate;

[0026] 410, motor; 420, driving rod; 430, fixing seat; 500, cable to be tested. DETAILED DESCRIPTION

[0027] Automobile cable test is a key step to ensure that the cable of vehicle electrical system works reliably and safely under various operating conditions. Since the ambient temperature of the power cable changes frequently, the power cable may experience a process of cold and hot cycle in practical application, thereby generating thermal stress and mechanical stress. These stress factors affect the performance of the power cable for a long time, and even may cause problems such as breakage, aging, leakage, etc. Therefore, before production, the performance of the cable under extreme temperature changes needs to be evaluated and tested by a special test equipment to simulate the service life of the cable.

[0028] The existing cold and hot cycle alternating test machine mainly sets a cold plate and a hot plate at the top end of the rack, places the sample to be tested on the sample plate, and drives the sample placed on the sample plate to reciprocate between the cold plate and the hot plate below through a driving mechanism. In this process, the sample to be tested is alternately attached to the cold plate or the hot plate to realize the cycle test of the sample to be tested in the cold and hot environment.

[0029] However, it can be found from the above scheme that since the shape of the sample to be tested is a circular arc, and the sample to be tested is placed on the sample plate throughout the entire experiment, the sample to be tested itself cannot be completely attached to the cold plate or the hot plate during the test. Moreover, the bottom plate of the sample plate also partially blocks the bottom of the cable, so that the device cannot complete the cold and hot cycle test of the outer covering of the cable, which may also bring some errors to the test results, affecting the accuracy and reliability of the test results.

[0030] Therefore, the embodiment of the present application provides a cold and hot cycle alternating test machine, which comprises a rack, a support mechanism mounted on the rack and detachably connected with the cable to be tested, a cold and hot cycle mechanism, and a driving assembly. The cold and hot cycle mechanism comprises a heating assembly and a cooling assembly arranged side by side along the extension direction of the cable to be tested. The heating assembly and the cooling assembly both enclose an annular space, and the cable to be tested is located in the coverage area of the annular space. The driving assembly is configured to drive at least one of the support mechanism and the cold and hot cycle mechanism to move along the extension direction of the cable to be tested, so that the cable to be tested reciprocates in the heating assembly and the cooling assembly.

[0031] In this way, the cable to be tested can be loaded on the support mechanism for testing, and under the action of the driving assembly, the cable to be tested can reciprocate in the annular space surrounded by the heating assembly or the annular space surrounded by the cooling assembly during testing, so as to realize the cyclic alternating test of the cable to be tested in the cold and hot environment. At the same time, since the annular spaces surrounded by the heating assembly and the cooling assembly are arranged outside the cable to be tested, the cable to be tested can be uniformly and stably heated or cooled around, which solves the problem of partial shielding outside the cable in the prior art and improves the stability and reliability of the test results.

[0032] To make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0033] Figure 1 A perspective view of a cold and hot cyclic alternating test machine provided by the embodiments of the present application is provided. As shown in Figure 1 The embodiments of the present application provide a cold and hot cyclic alternating test machine for detecting the performance of a cable to be tested 500. The cold and hot cyclic alternating test machine comprises a rack 100, a support mechanism mounted on the rack 100, a cold and hot cyclic mechanism for providing a cold and hot environment, and a driving assembly.

[0034] The cable to be tested 500 is detachably connected to the support mechanism. The cold and hot cyclic mechanism comprises a heating assembly 310 and a cooling assembly 320, and the heating assembly 310 and the cooling assembly 320 are arranged side by side along the extension direction of the cable to be tested 500. Moreover, the heating assembly 310 and the cooling assembly 320 each surround an annular space, and during testing, the cable to be tested 500 can be located in the coverage area of the annular space to receive the radiation transfer of heat or cold from the heating assembly 310 or the cooling assembly 320, so as to obtain an alternating cold and hot cyclic environment.

[0035] The driving assembly can provide driving power for at least one of the support mechanism and the cold and hot cyclic mechanism. Under the action of the driving assembly, at least one of the support mechanism and the cold and hot cyclic mechanism can move along the extension direction of the cable to be tested 500, so that the cable to be tested 500 can reciprocate in the heating assembly 310 and the cooling assembly 320.

[0036] It should be noted that the to-be-tested cable 500 reciprocally moves in the heating assembly 310 and the cooling assembly 320, which can be driven by the support mechanism to reciprocally move in the heating assembly 310 and the cooling assembly 320 together with the to-be-tested cable 500. Alternatively, the to-be-tested cable 500 and the support mechanism can be static, and the heating assembly 310 and the cooling assembly 320 can reciprocally move to change the relative position of the to-be-tested cable 500 and the heating assembly 310 or the cooling assembly 320. In summary, as long as the to-be-tested cable 500 reciprocally moves relative to the heating assembly 310 and the cooling assembly 320, it is acceptable.

[0037] As an embodiment, the driving assembly can drive the support mechanism to move along the extension direction of the to-be-tested cable 500. Under the action of the driving assembly, the support mechanism can drive the to-be-tested cable 500 to move in the annular space surrounded by the heating assembly 310 and the cooling assembly 320, so as to realize the reciprocating movement of the to-be-tested cable 500 in the heating assembly 310 and the cooling assembly 320.

[0038] As another embodiment, the support mechanism and the to-be-tested cable 500 are in a static state relative to the rack 100, and the driving assembly can drive the heating and cooling cycle mechanism to move along the extension direction of the to-be-tested cable 500. The heating assembly 310 and the cooling assembly 320 reciprocally move to adjust the relative position of the heating assembly 310 or the cooling assembly 320 and the to-be-tested cable 500. For example, the driving assembly can be arranged in the moving direction of the heating assembly 310 and the cooling assembly 320 to drive the heating assembly 310 or the cooling assembly 320 to reciprocally move along the extension direction of the to-be-tested cable 500.

[0039] In this way, the to-be-tested cable 500 can be loaded on the support mechanism for testing, and under the action of the driving assembly, the to-be-tested cable 500 can reciprocally move in the annular space surrounded by the heating assembly 310 or the annular space surrounded by the cooling assembly 320 during the test, so as to realize the cyclic and alternating test of the to-be-tested cable 500 in the hot and cold environment. Since the annular spaces surrounded by the heating assembly 310 and the cooling assembly 320 are around the outside of the to-be-tested cable 500, the to-be-tested cable 500 can be uniformly and stably heated or cooled around, which solves the problem of partial shielding of the cable in the prior art and improves the stability and reliability of the test results.

[0040] Figure 2 The structure of the cold and hot cyclic and alternating test machine provided in the embodiment of the present application is shown in a perspective view. It should be noted that, in order to observe the internal structure of the heating assembly 310 and the cooling assembly 320, Figure 2 The front half of the heating assembly 310 and the cooling assembly 320 is cut open to expose the internal components.

[0041] Referring toFigure 2 As shown, the heating assembly 310 comprises a first sleeve 311 and a ring-shaped heating plate 312 attached to the inner wall of the first sleeve 311 and capable of providing radiant heat to the annular space formed by the first sleeve 311. It should be noted that the ring-shaped heating plate 312 can be heated by electricity, or by infrared, conductive fluid or steam, and the heating method is not limited herein. In addition, the heating assembly 310 can be stably connected by being hoisted on the top of the rack 100, or by being stably retained by a retaining frame arranged on the rack 100 or outside the rack 100, and the connection method is not limited herein.

[0042] In some embodiments, the heating assembly 310 further comprises a first connecting plate 313 connected between the top wall of the rack 100 and the first sleeve 311 to stably retain the first sleeve 311. It should be noted that the first connecting plate 313 can be movably connected to the top wall of the rack 100, or fixedly connected to the top wall of the rack 100, and the connection method is not limited herein. In addition, the first connecting plate 313 can be detachably connected to the first sleeve 311, such as threaded connection, pin connection, clamping, or non-detachable connection, such as welding or gluing, and the connection method is not limited herein.

[0043] As an embodiment, one end of the first connecting plate 313 can be fixedly connected to the outer wall of the first sleeve 311, and the other end can be fixedly connected to the top wall of the rack 100. The first sleeve 311 is fixedly connected to the rack 100, and the cable under test 500 can move in the annular space formed by the first sleeve 311 under the driving of the driving assembly.

[0044] As another embodiment, the top wall of the rack 100 can be provided with a sliding rail (not shown), one end of the first connecting plate 313 can be fixedly connected to the outer wall of the first sleeve 311, and the other end can be slidably connected to the sliding rail. The cable under test 500 and the supporting mechanism can remain stationary, and the first sleeve 311 is driven to reciprocate by the driving assembly, so that the cable under test 500 is placed in or away from the area covered by the first sleeve 311.

[0045] In some embodiments, the heating assembly 310 can further comprise a temperature sensor (not shown) to monitor the temperature and its change in the heating assembly 310 during the test.

[0046] Continuing to refer to Figure 2As shown, the cooling assembly 320 comprises a second sleeve 321 and a condenser pipe 322 spirally extending along the inner wall of the second sleeve 321. In this way, the space utilization inside the second sleeve 321 can be improved, and the cooling efficiency can be improved. The cooling assembly 320 further comprises a water inlet joint 3211 and a water outlet joint 3212 (see Figure 1 As shown, the water inlet joint 3211 and the water outlet joint 3212 are both mounted on the second sleeve 321, and the water inlet joint 3211 and the water outlet joint 3212 are both in communication with the condenser pipe 322. The other side of the water inlet joint 3211 can be in communication with a water supply pipe, and the other side of the water outlet joint 3212 can be in communication with a water outlet pipe. In this way, the condenser pipe 322 can be continuously supplied with cooling water, and the cooling water can be discharged from the water outlet joint, so that a stable cooling environment can be provided for the cooling assembly 320.

[0047] In some embodiments, the cooling assembly 320 further comprises a second connecting plate 323 connected between the top wall of the rack 100 and the second sleeve 321, so that the second sleeve 321 can be kept stable. It should be noted that the second connecting plate 323 can be movably connected with the top wall of the rack 100, or can be fixedly connected with the top wall of the rack 100, and the connection manner is not limited herein. In addition, the second connecting plate 323 and the second sleeve 321 can be detachably connected, such as threaded connection, pin connection, clamping, etc., or can be non-detachably connected, such as welding, gluing, etc., and the specific connection manner is not limited herein.

[0048] As an embodiment, one end of the second connecting plate 323 can be fixedly connected with the outer wall of the second sleeve 321, and the other end can be fixedly connected with the top wall of the rack 100. The second sleeve 321 is fixedly connected with the rack 100, and the test cable 500 can move in the annular space surrounded by the second sleeve 321 under the driving of the driving assembly.

[0049] As another embodiment, the top wall of the rack 100 can be provided with a sliding rail (not shown), one end of the second connecting plate 323 can be fixedly connected with the outer wall of the second sleeve 321, and the other end can be slidably connected in the sliding rail. The test cable 500 and the supporting mechanism can be kept stationary, and the second sleeve 321 can be driven to reciprocate by the driving assembly, so that the test cable 500 can be placed in or away from the area covered by the second sleeve 321.

[0050] In some embodiments, the cooling assembly 320 can further comprise a temperature sensor (not shown) to monitor the temperature and its change in the cooling assembly 320 during the test.

[0051] The following schemes will be described by taking the driving assembly configured to drive the supporting mechanism to move along the extension direction of the test cable 500 as an example. Referring to Figure 1 andFigure 2 As shown, the support mechanism includes a transmission assembly 210 mounted on the frame 100. The transmission assembly 210 can reciprocate along the extension direction of the cable under test 500 under the drive of the drive assembly, and drive the cable under test 500 to reciprocate together, thereby realizing the transfer of the cable under test 500 within the heating assembly 310 and the cooling assembly 320.

[0052] For example, the transmission assembly 210 includes a transmission member 211 and a connecting frame 212. The transmission member 211 is slidably disposed on the bottom wall of the frame 100 and can slide along the extension direction of the cable under test 500. The connecting frame 212 is connected to the top of the transmission member 211 and can drive the cable under test 500 to reciprocate together.

[0053] Figure 3 This is a schematic diagram of the connection between the connecting frame 212 and the guide member 213 provided in an embodiment of this application, viewed from one angle. (Refer to...) Figure 2 and Figure 3 As shown, in one embodiment, the connecting frame 212 has a guide groove 2121 on the side facing the bottom wall of the frame 100. The transmission assembly 210 also includes a guide member 213 connected to the bottom wall of the frame 100. The guide member 213 can move along the guide groove 2121 of the connecting frame 212 to enhance the stability of the connecting frame 212 during reciprocating movement and to prevent the connecting frame 212 from tipping over during movement. It should be noted that multiple guide members 213 can be provided, and their number is not specifically limited here.

[0054] In some embodiments, the transmission assembly 210 further includes a rolling structure 240, which is connected to the outer surface of the connecting frame 212 and can roll along the bottom wall of the frame 100. This arrangement makes the overall operation of the transmission assembly 210 more stable through the rolling connection between the rolling structure 240 and the bottom wall of the frame 100. It should be noted that multiple sets of rolling structures 240 can be provided to enhance the stability of the transmission assembly 210; the number is not limited here.

[0055] Continue to refer to Figure 2 As shown, the support mechanism also includes a first support component 220. One end of the first support component 220 is connected to the transmission component 210, and the other end is connected to the first end of the cable under test 500. Specifically, the first support component 220 is connected to the side surface of the connecting frame 212 facing away from the transmission component 211.

[0056] In some embodiments, the first support assembly 220 includes a first support rod 221 and a first cable fixing device 222. One end of the first support rod 221 is connected to the transmission assembly 210, and specifically, the one end of the first support rod 221 can be connected to the side surface of the connecting frame 212 away from the transmission member 211. The first cable fixing device 222 is connected to the other end of the first support rod 221, and the first cable fixing device 222 is used to fix the first end of the cable under test 500.

[0057] As an implementation, the first cable fixing device 222 can be provided with a threading hole, and the first end of the cable under test 500 passes through the threading hole to achieve fixed connection with the first cable fixing device 222. In this way, the structure is simple and stable.

[0058] As another implementation, the first cable fixing device 222 can be provided with a claw, and the claw is provided with a through hole in the center and can move in the radial direction of the through hole. In this way, the position of the claw in the radial direction can be adjusted to adapt to the fixing requirements of the cable under test 500 of different sizes.

[0059] For example, the first support assembly 220 further includes a first baffle 223 connected to the first support rod 221 and arranged close to the first cable fixing device 222. The first baffle 223 can be used to block hot air, avoiding the mixing of cold air and hot air to affect the test temperature.

[0060] The support mechanism further includes a second support assembly 230. One end of the second support assembly 230 is connected to the transmission assembly 210, and the other end is connected to the second end of the cable under test 500. Specifically, the second support assembly 230 is connected to the side surface of the connecting frame 212 away from the transmission member 211.

[0061] In some embodiments, the second support assembly 230 includes a second support rod 231 and a second cable fixing device 232. One end of the second support rod 231 is connected to the transmission assembly 210, and specifically, the one end of the second support rod 231 can be connected to the side surface of the connecting frame 212 away from the transmission member 211. The second cable fixing device 232 is connected to the other end of the second support rod 231, and the second cable fixing device 232 is used to fix the second end of the cable under test 500.

[0062] As an implementation, the second cable fixing device 232 can be provided with a threading hole, and the second end of the cable under test 500 passes through the threading hole to achieve fixed connection with the second cable fixing device 232. In this way, the structure is simple and stable.

[0063] As another implementation, the second cable fixing device 232 can be provided with a claw, and the claw is provided with a through hole in the center and can move in the radial direction of the through hole. In this way, the position of the claw in the radial direction can be adjusted to adapt to the fixing requirements of the cable under test 500 of different sizes.

[0064] For example, the second support assembly 230 further comprises a second baffle 233, which is connected to the second support rod 231 and is arranged close to the second wire fixing device 232. The second baffle 233 can block the hot air to avoid the mixing of the cold air and the hot air, which can affect the test temperature.

[0065] Under the joint action of the first support assembly 220 and the second support assembly 230, the support mechanism is fixed with the cable to be tested 500 and can stretch and tension the cable to be tested 500 to reach a suitable test state.

[0066] To avoid the reciprocating movement of the support mechanism being limited by the rack 100, as an embodiment, the rack 100 can be provided with a relief groove 110 on both sides. The guide member 213 can be arranged opposite to the relief groove 110 to guide the support mechanism to move towards the relief groove 110.

[0067] As another embodiment, the size of the rack 100 in the extension direction of the cable to be tested 500 can be increased to avoid interference with the support mechanism.

[0068] In some embodiments, the driving assembly comprises a motor 410 and a transmission rod 420. The motor 410 is mounted on the rack 100, and specifically, the motor 410 can be arranged on one side of the base of the rack 100. The output end of the motor 410 is connected with the transmission rod 420, and the support mechanism is drivingly connected with the transmission rod 420. Specifically, the transmission rod 420 can be a threaded rod, and the transmission member 211 is sleeved on the threaded rod and can reciprocate along the extension direction of the cable to be tested 500 under the forward and reverse rotation of the motor 410.

[0069] In some embodiments, the driving assembly further comprises a fixing seat 430. The fixing seat 430 is arranged on the rack 100 and is located at the end of the base of the rack 100 away from the motor 410. The fixing seat 430 is rotationally connected with the end of the transmission rod 420 away from the motor 410. In this way, the stability of the driving assembly can be improved.

[0070] The working principle of the cold and hot cycle alternating test machine provided in the present application is as follows:

[0071] When it is needed to load the cable to be tested 500 on the support mechanism, the support mechanism can be driven by the driving assembly to move along one side of the cable to be tested 500, so that the first wire fixing device 222 and the second wire fixing device 232 are completely out of the coverage range of the heating assembly 310 or the cooling assembly 320, and then the two ends of the cable to be tested 500 are fixed on the first wire fixing device 222 and the second wire fixing device 232.

[0072] After the to-be-tested cable 500 is fixed, the to-be-tested cable 500 can be moved to the heating assembly 310 or the cooling assembly 320 according to test requirements by controlling the motor 410 to rotate forward and backward again, so as to perform heating or cooling tests, and after the heating or cooling tests are completed, the motor 410 is controlled to rotate again, so that the support mechanism drives the to-be-tested cable 500 to move to the cooling assembly 320 or the heating assembly 310, so as to perform cooling or heating tests, and the above steps are repeated.

[0073] It should be noted that when the driving assembly is configured to drive the cold and hot cycle mechanism to move along the extension direction of the to-be-tested cable 500, the heating assembly 310 or the cooling assembly 320 arranged on the top slide rail can be directly moved in the opposite direction by adjusting to realize the loading of the to-be-tested cable 500. Similarly, the relative position change of the to-be-tested cable 500 can be realized by driving the heating assembly 310 or the cooling assembly 320 by the driving assembly, which will not be described here.

[0074] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0075] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A thermal cycling test chamber for testing the performance of cables under test, characterized in that, The cold-hot cycle alternating testing machine comprises: a rack; a supporting mechanism mounted on the rack, and the cable to be tested is detachably connected to the supporting mechanism; a cold-hot cycle mechanism comprising a heating assembly and a cooling assembly arranged side by side along the extension direction of the cable to be tested, the heating assembly and the cooling assembly each enclose an annular space, and the cable to be tested is located in the coverage area of the annular space; a driving assembly configured to drive at least one of the supporting mechanism and the cold-hot cycle mechanism to move along the extension direction of the cable to be tested, so that the cable to be tested reciprocates in the heating assembly and the cooling assembly.

2. The thermal cycle alternating tester of claim 1, wherein, The heating assembly comprises a first sleeve and an annular heating plate attached to the inner wall of the first sleeve. The cooling assembly comprises a second sleeve and a condenser pipe, The condenser pipe spirally extends along the inner wall of the second sleeve.

3. The thermal cycling alternating tester of claim 2, wherein, The heating assembly further comprises a first connecting plate connected between the top wall of the rack and the first sleeve. The cooling assembly further comprises a second connecting plate connected between the top wall of the rack and the second sleeve.

4. The thermal cycling alternating tester of claim 2, wherein The cooling assembly further comprises a water inlet joint and a water outlet joint, both of which are mounted on the second sleeve and communicate with the condenser pipe.

5. The thermocycler according to any one of claims 1 to 4, wherein The supporting mechanism comprises: a transmission assembly configured to reciprocate along the extension direction of the cable to be tested under the driving of the driving assembly; a first supporting assembly connected at one end to the transmission assembly and at the other end to the first end of the cable to be tested; a second supporting assembly connected at one end to the transmission assembly and at the other end to the second end of the cable to be tested.

6. The thermal cycling alternating tester of claim 5, wherein, The transmission assembly comprises: a transmission member slidingly arranged on the bottom wall of the rack and slidable along the extension direction of the cable to be tested; a connecting frame connected to the top of the transmission member, and the first supporting assembly and the second supporting assembly are both connected to the side surface of the connecting frame away from the transmission member.

7. The thermal cycling alternating tester of claim 6, wherein, The transmission assembly further comprises: a rolling structure connected to the connecting frame and rolling along the bottom wall of the rack.

8. The thermal cycling alternating tester of claim 6, wherein, A guide groove is formed on the side of the connecting frame facing the bottom wall of the rack. The transmission assembly further comprises: a guide member connected to the bottom wall of the rack and moving along the guide groove of the connecting frame.

9. The thermal cycling alternating tester of claim 5, wherein, The first supporting assembly comprises a first supporting rod connected at one end to the transmission assembly and a first cable holder connected at the other end of the first supporting rod, and the first cable holder is used to fix the first end of the cable to be tested. The second supporting assembly comprises a second supporting rod connected at one end to the transmission assembly and a second cable holder connected at the other end of the second supporting rod, and the second cable holder is used to fix the second end of the cable to be tested.

10. The thermal cycling alternating tester of any one of claims 1-4, wherein, The driving assembly comprises a motor and a transmission rod; the motor is mounted on the rack, and the output end of the motor is connected to the transmission rod; The supporting mechanism is in transmission connection with the transmission rod.

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