High and low temperature cable torsion testing device

Abstract

The utility model provides a high and low temperature cable torsion testing device, which belongs to the field of cable testing devices and comprises a Dewar tank, a cooling device, a heating device, a fan device, a cable fixing tool, a tool fixing device, a flange cover plate and a tool driving device. The flange cover plate covers the Dewar tank, and the cooling device, the heating device, the tool driving device and the fan device are all inserted into the flange cover plate; the tool driving device is installed in the Dewar tank, the tool fixing device is installed in the Dewar tank, the cable fixing tool comprises an upper tool and a lower tool, the upper tool is installed on the tool driving device, the lower tool is installed on the tool fixing device, the upper tool and the lower tool are both located in the Dewar tank, and the lower tool is located under the upper tool; the upper end of the cable fixing tool is connected with the flange cover plate and located in the Dewar tank. The utility model aims to solve the problem that the prior art cannot meet the requirements of cable torsional fatigue tests in high and low temperature environments. The torsion testing device has the technical effects that torsion testing can be carried out in low-temperature, high-temperature and high-low-temperature alternating environments.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable testing device technical field especially relates to a high and low temperature cable torsion testing device. BACKGROUND

[0002] Wire and cable is an important wire product for transmitting electric energy and information. Automatic control unit, actuator and sensor unit need to exchange information through cable interconnection. Cable may need to face frequent rotation, torsion and other situations in actual use. When rotation, torsion and other situations reach cable torsion life, cable will appear insulation layer or internal wire wear and breakage, and further lead to transmission signal, power transmission interruption. In complex environment, such as aerospace field, wire and cable often need to face high and low temperature alternating environment test, therefore, it is necessary to carry out wire and cable torsion test under high and low temperature alternating environment.

[0003] At present, conventional cable torsion test device can carry out cable torsion test under room temperature or high temperature environment, and cannot meet the cable torsion fatigue test requirement of cable under alternating temperature environment of low temperature or high and low temperature. UTILITY MODEL CONTENTS

[0004] The utility model provides a high and low temperature cable torsion testing device to solve the defect that prior art cannot meet the cable low temperature alternating temperature environment under high and low temperature cable torsion fatigue test requirement, realize that cable can carry out torsion test under low temperature, high temperature and high and low temperature alternating environment.

[0005] The utility model provides high and low temperature cable torsion testing device, including dewar flask, cooling device, heating device, fan device, cable fixing frock, frock fixing device, flange cover plate and frock driving device, the flange cover plate is covered on dewar flask,

[0006] Cooling device, heating device, frock driving device and fan device are inserted on the flange cover plate;

[0007] Frock fixing device is installed in dewar flask, and the cable fixing frock includes upper frock and lower frock, the upper frock is installed on frock driving device, and the lower frock is installed on frock fixing device, and the upper frock and lower frock are located in dewar flask, and the lower frock is located directly below the upper frock;

[0008] The upper end of cable fixing frock is connected with the flange cover plate, and the cable fixing frock is located in dewar flask, the cooling device is used for cooling in dewar flask, the heating device is used for heating in dewar flask, and the fan device is used for uniform cooling or heating in dewar flask.

[0009] The high-low temperature cable torsion test device can realize torsion test of the cable in a high-temperature environment and in a low-temperature environment, and can also meet the cable torsion fatigue test requirement of the cable in an alternating temperature environment in a temperature range of -269 DEG C to 200 DEG C.

[0010] In addition, the high-low temperature cable torsion test device can also have the following additional technical features.

[0011] In some embodiments of the utility model, the cooling device includes liquid pipe and low temperature working medium spraying coil pipe, liquid pipe is inserted on flange cover plate, low temperature working medium spraying coil pipe is installed at the end of liquid pipe and is located in low temperature working medium spraying coil pipe dewar jar.

[0012] In some embodiments of the utility model, the cooling device further includes electromagnetic valve, electromagnetic valve is arranged on liquid pipe, and the electromagnetic valve is installed on the surface of the flange cover plate.

[0013] By adopting the above-mentioned embodiments, the low temperature working medium spraying coil pipe is arranged to realize the rapid and reliable cooling of the dewar jar, and the electromagnetic valve is arranged to control the flow of the low temperature working medium liquid nitrogen.

[0014] In some embodiments of the utility model, the heating device includes heating rod fixing clamp and heating rod, the upper end of the heating rod fixing clamp is connected with the flange cover plate and located in the dewar jar, and the heating rod is installed on the heating rod fixing clamp.

[0015] By adopting the above-mentioned embodiments, the heating rod is arranged to realize the rapid and reliable heating of the dewar jar.

[0016] In some embodiments of the utility model, the tool driving device includes cable motor and shaft, the cable motor is installed on the surface of the flange cover plate, one end of the shaft is connected with the output shaft of the cable motor, and the other end of the shaft is connected with the upper tool.

[0017] By adopting the above-mentioned embodiments, the rotation of the shaft driven by the cable motor can drive the upper tool to rotate and further drive the cable to twist, so that the cable torsion test is realized simply and reliably.

[0018] In some embodiments of the utility model, the tool driving device further includes a torque sensor, and the torque sensor is arranged on the shaft.

[0019] Through the above-mentioned embodiment, the torque sensor can be arranged to monitor the torque of the cable in real time during the test, thereby ensuring the accuracy and reliability of the cable test, and the torque sensor is arranged on the shaft rod, which is simple and convenient.

[0020] In some embodiments of the utility model, fan device includes fan motor, first gear, second gear, connecting sleeve and axial flow fan, connecting sleeve and axial flow fan can rotate sleeve set on the axle, fan motor is installed on the flange cover plate, first gear is connected with the output shaft of fan motor, second gear is sleeve set on the connecting sleeve, second gear is engaged with first gear, axial flow fan is connected with one end of connecting sleeve, axial flow fan, first gear and second gear are located in dewar jar.

[0021] Through the above-mentioned embodiment, the first gear, the second gear, the connecting sleeve and the axial flow fan are arranged to realize the dispersion of heat and the uniform spraying of the low-temperature working medium, increase the effect of temperature rise and temperature drop, and the connecting sleeve and the axial flow fan are arranged on the shaft rod, which saves the space.

[0022] In some embodiments of the utility model, the dewar jar includes an inner cylinder and an outer cylinder, the outer cylinder is sleeved on the inner cylinder, and the flange cover plate covers the inner cylinder and the outer cylinder.

[0023] Through the above-mentioned embodiment, the inner cylinder, the outer cylinder and the flange cover plate are arranged to realize the dewar jar as a closed space, and the cable torsion test effect is ensured.

[0024] In some embodiments of the utility model, the fixture fixing device includes a lifting plate, a plurality of adjusting screws and a plurality of adjusting nuts, one end of the adjusting screw is connected with the flange cover plate, the plurality of adjusting screws are inserted on the lifting plate, and two adjusting nuts are threadedly connected on each adjusting screw and located on both sides of the lifting plate.

[0025] Through the above-mentioned embodiment, the height of the lifting plate can be adjusted according to the demand, and the height of the lower fixture in the dewar jar is adjusted, and the distance between the lower fixture and the upper fixture is adjusted to realize the torsion test of the cable of different lengths.

[0026] In some embodiments of the utility model, a thermometer is further included, and the thermometer is arranged in the dewar jar.

[0027] Through the above-mentioned embodiment, the thermometer is arranged to realize real-time monitoring of the temperature in the dewar jar to ensure the test effect of the cable torsion.

[0028] In summary, the present application has the following beneficial technical effects:

[0029] The high-low temperature cable torsion test device can realize the torsion test of the cable in a high-temperature environment and a low-temperature environment through the cooperation of the heating device, the cooling device and the tool driving device, and can meet the cable torsion fatigue test requirement of the cable in an alternating temperature environment of-269 DEG C to 200 DEG C, and the temperature in the Dewar jar is relatively uniform through the setting of the fan device, so that the local temperature in the Dewar jar is prevented from being too low or too high, and the test effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0031] Figure 1 A perspective view of a high-low temperature cable torsion test device according to some embodiments of the present application is schematically shown.

[0032] Figure 2 A first cross-sectional view of a high-low temperature cable torsion test device according to some embodiments of the present application is schematically shown.

[0033] Figure 3 A second cross-sectional view of a high-low temperature cable torsion test device according to some embodiments of the present application is schematically shown.

[0034] Figure 4 A first view of a perspective view of a high-low temperature cable torsion test device without a Dewar jar according to some embodiments of the present application is schematically shown.

[0035] Figure 5 A perspective view of a cable fixing tool of a high-low temperature cable torsion test device according to some embodiments of the present application is schematically shown.

[0036] Figure 6 A second view of a perspective view of a high-low temperature cable torsion test device without a Dewar jar according to some embodiments of the present application is schematically shown.

[0037] Figure 7 A perspective view of a fan device of a high-low temperature cable torsion test device according to some embodiments of the present application is schematically shown.

[0038] Figure 8 A perspective view of a connection of a fan device and a tool driving device of a high-low temperature cable torsion test device according to some embodiments of the present application is schematically shown.

[0039] Figure 9 Fig. 6 schematically shows a perspective view of a tool driving device of a high and low temperature cable torsion test device according to some embodiments of the present application.

[0040] Figure 10 Fig. 7 schematically shows a perspective view of a cooling device of a high and low temperature cable torsion test device according to some embodiments of the present application.

[0041] Reference signs:

[0042] 1, Dewar flask, 11, inner cylinder, 12, outer cylinder, 13, flange cover plate, 2, cooling device, 21, electromagnetic valve, 22, liquid pipe, 23, low-temperature working medium spraying coil, 24, pipe base, 25, valve support, 3, aviation plug, 4, fan device, 401, fan motor, 402, first connecting shaft, 403, first mounting bracket, 404, first coupling, 405, first gear, 406, second gear, 407, gear seat, 408, connecting ring, 409, fan flange, 410, connecting sleeve, 411, axial flow fan, 5, tool driving device, 51, cable motor, 52, shaft rod, 521, first clamping groove, 522, second clamping groove, 53, second mounting bracket, 54, torque sensor, 55, second coupling, 57, sensor mounting plate, 6, tool fixing device, 61, lifting plate, 62, adjusting screw, 63, adjusting nut, 7, cable fixing tool, 71, lower tool, 711, first mounting rod, 712, first angle plate, 713, first vertical plate, 714, first clamping block, 715, first wire passing hole, 716, first hole, 72, upper tool, 721, second mounting rod, 722, second angle plate, 723, second vertical plate, 724, second clamping block, 725, second wire passing hole, 726, second hole, 9, heating rod fixing clamp. DETAILED DESCRIPTION

[0043] Exemplary embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure can be embodied in various forms without being limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thoroughly and completely understood, and will fully convey the scope of the present disclosure to those skilled in the art.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0045] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second", and the like are used herein to describe a variety of elements, components, regions, layers and / or sections, and do not imply an order or sequence unless the context clearly indicates otherwise. Thus, elements, components, regions, layers or sections discussed below as first elements, components, regions, layers or sections can be referred to as second elements, components, regions, layers or sections without departing from the teachings of example embodiments.

[0046] For ease of description, spatially relative terms can be used herein for the purpose of describing the relationship between one element or feature to another element or feature as shown in the figures, such as "internal", "external", "lateral", "longitudinal", "lower", "down", "upper", "up", and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device is turned over, then an element that is described as being "below" or "beneath" another element or feature would then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can encompass both an up and a down orientation. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0047] As shown in the drawings, Figures 1 to 10 According to the embodiments of the first aspect of the present application, a high-low temperature cable torsion test device is provided, which comprises a Dewar pot 1, a cooling device 2, a heating device, a fan device 4, a cable fixing tool 7, a tool fixing device 6, a flange cover plate 13 and a tool driving device 5; the flange cover plate 13 is covered on the Dewar pot 1,

[0048] The cooling device 2, the heating device, the tool driving device 5 and the fan device 4 are all inserted on the flange cover plate 13.

[0049] The tool fixing device 6 is installed in the Dewar pot 1, the cable fixing tool 7 includes an upper tool 72 and a lower tool 71, the upper tool 72 is installed on the tool driving device 5, the lower tool 71 is installed on the tool fixing device 6, and the upper tool 72 and the lower tool 71 are both located in the Dewar pot 1, and the lower tool 71 is located directly below the upper tool 72.

[0050] The upper end of the cable fixing tool 7 is connected with the flange cover plate 13 and the cable fixing tool 7 is located in the Dewar pot 1, the cooling device 2 is used for cooling in the Dewar pot 1, the heating device is used for heating in the Dewar pot 1, and the fan device 4 is used for uniform cooling or heating in the Dewar pot 1.

[0051] In the above embodiment, it should be noted that the lower tool 71 includes a first mounting rod 711, a first angle plate 712, a first vertical plate 713 and a first clamping block 714, one side of the first mounting rod 711 is provided with the first clamping block 714, the first clamping block 714 is bonded or screwed or welded after being clamped with the cable fixing tool 7, the other side of the first mounting rod 711 is provided with the first angle plate 712 and the first vertical plate 713 at intervals, the first angle plate 712 is in the shape of "L" character, two first wire passing holes 715 are provided on the first mounting rod 711 at intervals, and first holes 716 are provided on the first angle plate 712 and the first vertical plate 713.

[0052] The upper tool 72 includes a second mounting rod 721, a second angle plate 722, a second vertical plate 723 and a second clamping block 724, one side of the second mounting rod 721 is provided with the second clamping block 724, the second clamping block 724 is bonded or screwed or welded after being clamped with the tool driving device 5, the other side of the second mounting rod 721 is provided with the second angle plate 722 and the second vertical plate 723 at intervals, the second angle plate 722 is in the shape of "L" character, two second wire passing holes 725 are provided on the second mounting rod 721 at intervals, and second holes 726 are provided on the second angle plate 722 and the second vertical plate 723.

[0053] The first angle plate 712 and the second angle plate 722 are oppositely arranged.

[0054] When the cable torsion test needs to be carried out, the cable is fixed after being sequentially threaded through the two first wire passing holes 715, the first hole 716 of the first vertical plate 713, the first hole 716 of the first angle plate 712, the second hole 726 of the second angle plate 722 and the first wire passing hole 715, then the fan device 4 is turned on, then the heating device is turned on, the tool driving device 5 is started to drive the upper tool 71 to rotate to drive the cable to carry out the high-temperature environment test of the cable, after the high-temperature test is completed, the heating device is turned off, the cooling device 2 is started to carry out the low-temperature environment test of the cable, and after the test is completed, the tool driving device 5, the fan device 4 and the cooling device 2 are sequentially turned off.

[0055] The technical effects achieved by the above embodiment are that the cooperation of the heating device, the cooling device and the tool driving device 5 realizes that the cable can be subjected to the torsion test in the high-temperature environment and the low-temperature environment, and also meets the cable torsion fatigue test requirement of the cable in the alternating temperature environment of -269℃ to 200℃, and the temperature in the Dewar pot 1 is relatively uniform due to the setting of the fan device, so that the local temperature in the Dewar pot 1 is prevented from being too low or too high, and the test effect is guaranteed.

[0056] Optionally, as shown in Figures 1 to 4 and Figure 6 and Figure 10 The cooling device 2 includes a liquid pipe 22 and a low-temperature working medium spraying coil pipe 23, the liquid pipe 22 is inserted on the flange cover plate 13, and the low-temperature working medium spraying coil pipe 23 is installed at the end of the liquid pipe 22 and located in the Dewar pot 1.

[0057] The cooling device 2 further includes a solenoid valve 21, the solenoid valve 21 is arranged on the liquid pipe 22 and installed on the surface of the flange cover plate 13.

[0058] In the above optional embodiment, it needs to be explained that the cooling device further includes a pipe seat 24 and a valve support 25, the pipe seat 24 and the valve support 25 are both fixed on the surface of the flange cover plate 13, the solenoid valve 21 is installed on the valve support 25, the liquid pipe 22 is inserted on the pipe seat 24, and the low-temperature working medium spraying coil pipe 23 is located directly below the fan device 4; the low-temperature working medium is liquid nitrogen, when cooling is needed, the liquid nitrogen is injected into the low-temperature working medium spraying coil pipe 23 through the liquid pipe 22 by a liquid pump, and the spraying cooling in the Dewar pot 1 is realized through a plurality of liquid outlet holes on the low-temperature working medium spraying coil pipe 23.

[0059] The beneficial effects of the above optional embodiment are that the rapid and reliable cooling of the Dewar pot 1 is realized through the setting of the low-temperature working medium spraying coil pipe 23, and the flow of the low-temperature working medium liquid nitrogen can be controlled through the setting of the solenoid valve 21.

[0060] Optionally, as shown in Figures 1 to 4 and Figure 6As shown in the figure, the heating device comprises a heating rod fixing clamp 9 and a heating rod, the upper end of the heating rod fixing clamp 9 is connected with the flange cover plate 13 and located in the dewar pot 1, and the heating rod is installed on the heating rod fixing clamp 9.

[0061] In the above optional embodiment, it should be noted that the heating rod is connected by screwing or clamping after being inserted into the heating rod fixing clamp 9.

[0062] The above optional embodiment has the beneficial effect that the rapid and reliable heating in the dewar pot 1 is realized by the setting of the heating rod.

[0063] Optionally, as shown in Figures 1 to 4 and Figure 8 and Figure 9 As shown in the figure, the tool driving device 5 comprises a cable motor 51 and a shaft rod 52, the cable motor 51 is installed on the surface of the flange cover plate 13, one end of the shaft rod 52 is connected with the output shaft of the cable motor 51, and the other end of the shaft rod 52 is connected with the upper tool 72.

[0064] In the above optional embodiment, it should be noted that the first clamping groove 521 and the second clamping groove 522 are arranged on the end of the shaft rod 52 away from the cable motor 51, the first clamping groove 521 and the second clamping groove 522 are communicated with each other, the second mounting rod 721 is clamped on the first clamping groove 521 and then screwed or clamped with the side wall of the first clamping groove 521, the second clamping block 724 is clamped on the second clamping groove 522 and then screwed or clamped with the side wall of the second clamping groove 522, and the cable motor 51 is a servo motor.

[0065] The above optional embodiment has the beneficial effect that the rotation of the shaft rod 52 driven by the cable motor 51 can drive the upper tool 72 to rotate and then drive the cable to twist, so that the cable twisting test is realized simply and reliably.

[0066] Optionally, as shown in Figures 1 to 4 and Figure 8 and Figure 9 As shown in the figure, the tool driving device 5 further comprises a torque sensor 54, and the torque sensor 54 is arranged on the shaft rod 52.

[0067] In the optional embodiment, it is to be explained that the tool driving device 5 further comprises a second coupling 55, a second mounting bracket 53 and a sensor mounting plate 57, the second mounting bracket 53 is mounted on the surface of the flange cover plate 13 by screwing, the cable motor 51 is mounted on the end of the second mounting bracket 53 away from the flange cover plate 13 by screwing, the shaft 52 is connected with the output shaft of the cable motor 51 through the second coupling 55 after penetrating through the second mounting bracket 53, the torque sensor 54 is mounted on the shaft 52 by screwing and the side of the torque sensor 54 is connected with the sensor mounting plate 57, and the sensor mounting plate 57 is fixed on the second mounting bracket 53 by screwing.

[0068] The optional embodiment has the beneficial effect that the torque sensor 54 can be used to monitor the torque of the cable in real time during the test, thereby ensuring the accuracy and reliability of the cable test, and the structure of the torque sensor 54 arranged on the shaft 52 is simple and convenient.

[0069] Optionally, as shown in Figures 1 to 4 and Figure 7 and Figure 8 The fan device 4 comprises a fan motor 401, a first gear 405, a second gear 406, a connecting sleeve 410 and an axial flow fan 411, the connecting sleeve 410 and the axial flow fan 411 are rotatably sleeved on the shaft 52, the fan motor 401 is mounted on the flange cover plate 13, the first gear 405 is connected with the output shaft of the fan motor 401, the second gear 406 is sleeved on the connecting sleeve 410, the second gear 406 is engaged with the first gear 405, the axial flow fan 411 is connected with one end of the connecting sleeve 410, and the axial flow fan 411, the first gear 405 and the second gear 406 are located in the Dewar pot 1.

[0070] In the optional embodiment, it is to be explained that the low-temperature working medium spraying coil 23 is located directly below the axial flow fan 411.

[0071] The heating rod fixing clamp 9 is located beside the axial flow fan 411, the number of the heating rod fixing clamp 9 is multiple, and the multiple heating rod fixing clamps 9 are arranged in a circumferential array on the outer periphery of the axial flow fan 411.

[0072] The fan device 4 further comprises a first connecting shaft 402, a first mounting frame 403, a first coupling 404, a gear seat 407, a connecting ring 408 and a fan flange 409. The first mounting frame 403 is fixed on the surface of the flange cover plate 13 by screwing. The fan motor 401 is mounted on the top of the first mounting frame 403. The output shaft of the fan motor 401 passes through the top wall of the first mounting frame 403 and is connected with the first connecting shaft 402 through the first coupling 404. The other end of the first connecting shaft 402 passes through the flange cover plate 13 and is connected with the first gear 405. The connecting sleeve 410 is rotatably connected with the flange cover plate 13 through a bearing. The top of the connecting sleeve 410 is integrally formed with the connecting ring 408 to fix the up-down position of the connecting sleeve 410. The second gear 406 is located on the side of the flange cover plate 13 away from the connecting ring 408. The gear seat 407 is connected with the inner top wall of the Dewar pot 1 through a bolt. The second gear 406 is located between the flange cover plate 13 and the gear seat 407. The connecting sleeve 410 is connected with the axial flow fan 411 through the fan flange 409. The shaft rod 52 is inserted into the axial flow fan 411. Bearings are arranged between the connecting sleeve 410, the axial flow fan 411 and the shaft rod 52.

[0073] The above-mentioned optional embodiment has the beneficial effect that the cooperation of the first gear 405, the second gear 406, the connecting sleeve 410 and the axial flow fan 411 realizes that the axial flow fan 411 can disperse heat directly above the cable fixing tool 7 and make the low-temperature working medium uniformly spray and evaporate, thereby increasing the effect of temperature rise and temperature drop. In addition, the space is saved due to the setting that the connecting sleeve 410 and the axial flow fan 411 are both sleeved on the shaft rod 52.

[0074] Optionally, as shown in Figures 1 to 4 The Dewar pot 1 comprises an inner cylinder 11 and an outer cylinder 12. The outer cylinder 12 is sleeved on the inner cylinder 11. The flange cover plate 13 covers the inner cylinder 11 and the outer cylinder 12.

[0075] In the above-mentioned optional embodiment, it should be noted that the inner cylinder 11 and the outer cylinder 12 are provided with vacuumization to realize that the Dewar pot 1 can achieve the effect of cold and heat insulation. The first mounting frame 403, the second mounting frame 53, the heating rod fixing clamp 9 and the valve bracket 25 are connected with the flange cover plate 13 through bolt connection. The shaft rod 52 passes through the flange cover plate 13 and extends into the inside of the Dewar pot 1.

[0076] The above-mentioned optional embodiment has the beneficial effect that the cooperation of the inner cylinder 11, the outer cylinder 12 and the flange cover plate 13 realizes that the Dewar pot 1 is a closed space, thereby guaranteeing the cable torsion test effect.

[0077] Optionally, as shown in Figure 2 and Figure 3As shown, the tool fixing device 6 comprises a lifting plate 61, a plurality of adjusting screws 62 and a plurality of adjusting nuts 63, one end of the adjusting screw 62 is connected with the flange cover plate 13, the plurality of adjusting screws 62 are inserted on the lifting plate 61, two adjusting nuts 63 are threadedly connected on each adjusting screw 62 and are located on both sides of the lifting plate 61 respectively.

[0078] In the above optional embodiment, it should be noted that the square hole is formed on the lifting plate 62, and the first clamping block 714 is clamped in the square hole.

[0079] The above optional embodiment has the beneficial effect that the height of the lifting plate 61 can be adjusted according to the demand through the cooperation of the adjusting screw 62 and the adjusting nut 63, thereby realizing the adjustment of the height of the lower tool 71 in the Dewar pot 1, and further realizing the adjustment of the distance between the upper tool 71 and the lower tool 71 to realize the torsion test of the cable with different lengths.

[0080] Optionally, a thermometer is further included, and the Dewar pot 1 is provided with the thermometer.

[0081] In the above optional embodiment, it should be noted that the aviation plug 3 and the controller are further included, the thermometer is electrically connected with the aviation plug 3, the aviation plug 3, the fan motor 401, the cable motor 51, the electric heating rod, the electromagnetic valve 21 and the liquid pump are electrically connected with the controller, and the thermometer is not shown in the figure.

[0082] The above optional embodiment has the beneficial effect that the real-time monitoring of the temperature in the Dewar pot 1 is realized through the setting of the thermometer to guarantee the test effect of the cable torsion.

[0083] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high and low temperature cable torsion testing device, characterized in that, The device comprises a Dewar flask (1), a cooling device (2), a heating device, a fan device (4), a cable fixing tool (7), a tool fixing device (6), a flange cover plate (13) and a tool driving device (5); the flange cover plate (13) covers the Dewar flask (1), The cooling device (2), the heating device, the tool driving device (5) and the fan device (4) are all inserted on the flange cover plate (13); The tool fixing device (6) is installed in the Dewar flask (1), the cable fixing tool (7) comprises an upper tool (72) and a lower tool (71), the upper tool (72) is installed on the tool driving device (5), the lower tool (71) is installed on the tool fixing device (6), the upper tool (72) and the lower tool (71) are both located in the Dewar flask (1), and the lower tool (71) is located directly below the upper tool (72); The upper end of the cable fixing tool (7) is connected with the flange cover plate (13), and the cable fixing tool (7) is located in the Dewar flask (1), the cooling device (2) is used for cooling in the Dewar flask (1), the heating device is used for heating in the Dewar flask (1), and the fan device (4) is used for uniform cooling or heating in the Dewar flask (1).

2. The high and low temperature cable torsion testing device of claim 1, wherein, The cooling device (2) comprises a liquid pipe (22) and a low-temperature working medium spraying coil pipe (23), the liquid pipe (22) is inserted on the flange cover plate (13), the low-temperature working medium spraying coil pipe (23) is installed at the end of the liquid pipe (22), and the low-temperature working medium spraying coil pipe (23) is located in the Dewar flask (1).

3. The high-low temperature cable torsion testing apparatus of claim 2, wherein, The cooling device (2) further comprises a solenoid valve (21), the solenoid valve (21) is arranged on the liquid pipe (22), and the solenoid valve (21) is installed on the surface of the flange cover plate (13).

4. The high-low temperature cable torsion testing apparatus of claim 1, wherein, The heating device comprises a heating rod fixing clamp (9) and a heating rod, the upper end of the heating rod fixing clamp (9) is connected with the flange cover plate (13) and located in the Dewar flask (1), and the heating rod is installed on the heating rod fixing clamp (9).

5. The high-low temperature cable torsion testing apparatus of any one of claims 1 to 4, wherein, The tool driving device (5) comprises a cable motor (51) and a shaft rod (52), the cable motor (51) is installed on the surface of the flange cover plate (13), one end of the shaft rod (52) is connected with the output shaft of the cable motor (51), and the other end of the shaft rod (52) is connected with the upper tool (72).

6. The high-low temperature cable torsion testing apparatus of claim 5, wherein, The tool driving device (5) further comprises a torque sensor (54), and the torque sensor (54) is arranged on the shaft rod (52).

7. The high-low temperature cable torsion testing apparatus of claim 5, wherein, The fan device (4) comprises a fan motor (401), a first gear (405), a second gear (406), a connecting sleeve (410) and an axial flow fan (411), the connecting sleeve (410) and the axial flow fan (411) are rotatably sleeved on the shaft rod (52), the fan motor (401) is installed on the flange cover plate (13), the first gear (405) is connected with the output shaft of the fan motor (401), the second gear (406) is sleeved on the connecting sleeve (410), the second gear (406) is engaged with the first gear (405), the axial flow fan (411) is connected with one end of the connecting sleeve (410), and the axial flow fan (411), the first gear (405) and the second gear (406) are located in the dewar jar (1).

8. The high-low temperature cable torsion testing apparatus of any one of claims 1 to 4, wherein, The dewar jar (1) comprises an inner cylinder (11) and an outer cylinder (12), the outer cylinder (12) is sleeved on the inner cylinder (11), and the flange cover plate (13) covers the inner cylinder (11) and the outer cylinder (12).

9. The high-low temperature cable torsion testing apparatus of claim 8, wherein, The tool fixing device (6) comprises a lifting plate (61), a plurality of adjusting screws (62) and a plurality of adjusting nuts (63), one end of the adjusting screw (62) is connected with the flange cover plate (13), a plurality of adjusting screws (62) are inserted on the lifting plate (61), two adjusting nuts (63) are threadedly connected on each adjusting screw (62), and the two adjusting nuts (63) are located on the two sides of the lifting plate (61).

10. The high-low temperature cable torsion testing apparatus of any one of claims 1 to 4, wherein, Further comprising a thermometer, and the dewar jar (1) is provided with the thermometer.

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