CN117451537A - Cable torsion performance testing device - Google Patents
Cable torsion performance testing device Download PDFInfo
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- CN117451537A CN117451537A CN202311576419.7A CN202311576419A CN117451537A CN 117451537 A CN117451537 A CN 117451537A CN 202311576419 A CN202311576419 A CN 202311576419A CN 117451537 A CN117451537 A CN 117451537A
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- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000011056 performance test Methods 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a cable torsion performance testing device, which comprises: the first support plate is hinged to the second support plate, the first torsion motor and the second torsion motor are respectively arranged on the surface of the first support plate and the surface of the second support plate, the axis of the output shaft of the first torsion motor is intersected with the axis of the output shaft of the second torsion motor, meanwhile, the axis of the output shaft of the first torsion motor and the axis of the output shaft of the second torsion motor are vertically intersected with the axis of the hinge shaft of the first support plate and the axis of the hinge shaft of the second support plate, the clamping pieces are coaxially arranged on the output shafts of the first torsion motor and the second support plate, and the rotation pieces can drive the first support plate to rotate relative to the second support plate. The testing device can apply bending action to the cable while twisting, so that a more real use environment is simulated, and the testing result is more reliable.
Description
Technical Field
The invention relates to the technical field of cable test devices, in particular to a cable torsion performance test device.
Background
The cable torsion test is mainly to test the torsion performance of the cable. The torsion test device simulates the force applied to the cable during torsion, so that the torsion performance of the cable is tested, and the cable is ensured not to be damaged or have potential safety hazards due to torsion during use.
The existing cable torsion test device mainly adopts one or two oppositely arranged torsion structures to carry out torsion test on a test cable, the torsion structures apply torsion acting force, and after applying specific torsion acting force for a certain time, the test result is obtained by judging the appearance or the electrical property of the cable. However, in practical applications, the use environment of the cable is not as ideal as the test environment, the cable may be subjected to bending action or extrusion and stretching action during the torsion process, and the existing torsion test device cannot accurately simulate the external force action during the torsion process, so the torsion performance test result cannot meet the practical application requirement.
In view of the foregoing, there is a need for a cable torsion performance testing apparatus that can solve the above-mentioned technical problems.
Disclosure of Invention
In view of this, the invention provides a cable torsion performance testing device, which aims to improve the simulation degree in the cable torsion performance test.
The technical scheme of the invention is realized as follows: the invention provides a cable torsion performance testing device, which comprises: the first support plate is hinged to the second support plate, the first torsion motor and the second torsion motor are respectively arranged on the surface of the first support plate and the surface of the second support plate, the axis of the output shaft of the first torsion motor is intersected with the axis of the output shaft of the second torsion motor, meanwhile, the axis of the output shaft of the first torsion motor and the axis of the output shaft of the second torsion motor are vertically intersected with the axis of the hinge shaft of the first support plate and the axis of the hinge shaft of the second support plate, the clamping pieces are coaxially arranged on the output shafts of the first torsion motor and the second support plate, and the rotation pieces can drive the first support plate to rotate relative to the second support plate.
In some embodiments, the rotating member includes a base, a gear ring, a first driving motor and a first driving gear, the first supporting plate is rotatably disposed on the surface of the base around a hinge shaft of the first driving motor, the gear ring is coaxially disposed on the outer sides of the first supporting plate and the second supporting plate around the hinge shaft of the first supporting plate and the second supporting plate, the first driving motor is fixed on one end of the first supporting plate far away from the hinge shaft, the first driving gear is coaxially connected to an output shaft of the first driving motor in a key manner, and the first driving gear is meshed with the gear ring.
In some embodiments, the rotating member further includes a second driving motor fixedly disposed at an end of the second support plate remote from the hinge shaft, and a second driving gear coaxially keyed to an output shaft of the second driving motor, the second driving gear being engaged with the ring gear.
In some embodiments, the support ring is fixed on the surface of the base, the support ring is coaxially arranged with the hinge shafts of the first support plate and the second support plate, and the first support plate and the second support plate are both arranged on the surface of the support ring in a sliding manner.
In some embodiments, the support ring further comprises a ball, one surface of the support ring away from the base is coaxially provided with a groove, the ball is arranged in the groove in a rolling mode, and the first support plate and the second support plate are in rolling contact with the ball.
In some embodiments, the device further comprises a first linear driving device, the first linear driving device is fixed on the surface of the first supporting plate, the first torsion motor is fixed on the driving end of the first linear driving device, and the driving direction of the first linear driving device is parallel to the axis direction of the rotating shaft of the first torsion motor.
In some embodiments, the device further comprises a second linear driving device, the second linear driving device is fixed on the surface of the second supporting plate, the second torsion motor is fixed on the driving end of the second linear driving device, and the driving direction of the second linear driving device is parallel to the axis direction of the rotating shaft of the second torsion motor.
In some embodiments, the clamping member comprises a limiting ring and a tightening column, wherein the limiting ring is connected to the output shaft of the first torsion motor and the output shaft of the second torsion motor through coaxial keys, the limiting ring is provided with at least three threaded holes along the circumferential array, the threaded holes are provided along the radial direction of the limiting ring, and each threaded hole is connected with a tightening column through threads.
In some embodiments, the device further comprises a pressing plate hinged to one end of the jacking column located on the inner side of the limiting ring, the pressing plate is arc-shaped, and the arc-shaped pressing plate and the limiting ring are coaxially arranged.
Compared with the prior art, the cable torsion performance testing device has the following beneficial effects:
the cable torsion performance testing device is further provided with the rotating piece on the premise of setting the torsion motor to carry out torsion test, and the rotating piece is used for driving the two torsion motors to rotate relatively, so that the tested cable is driven to bend, the cable is subjected to bending treatment while the cable is subjected to torsion test, the situation that the cable is subjected to external acting force to bend while being twisted can be simulated more truly, and the torsion test result is more authentic and reliable.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an isometric view of a cable torsion performance testing apparatus of the present invention;
FIG. 2 is an exploded view of the cable torsion performance test apparatus of the present invention;
FIG. 3 is an exploded view of another state of the cable torsion performance test device of the present invention;
FIG. 4 is an isometric view of a clamp in the cable torsion performance test apparatus of the invention;
fig. 5 is an exploded view of the clamping member of the cable torsion performance testing apparatus of the present invention.
In the figure: 1-first backup pad, 2-second backup pad, 3-first torsion motor, 4-second torsion motor, 5-holder, 6-rotor, 7-support ring, 8-ball, 9-first linear drive, 10-second linear drive, 51-stop collar, 52-jack post, 53-clamp plate, 511-screw hole, 61-base, 62-ring gear, 63-first driving motor, 64-first driving gear, 65-second driving motor, 66-second driving gear, 71-recess.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the invention belong. If the definitions set forth in this section are contrary to or otherwise inconsistent with the definitions set forth in the patents, patent applications, published patent applications and other publications incorporated herein by reference, the definitions set forth in this section are preferentially set forth in the definitions set forth herein.
Referring to fig. 1, in conjunction with fig. 2 to 5, a cable torsion performance testing apparatus according to one embodiment of the present invention includes: the device comprises a long first supporting plate 1, a long second supporting plate 2, a first torsion motor 3, a second torsion motor 5, a clamping piece 5 and a rotating piece 6, wherein one end of the first supporting plate 1 and one end of the second supporting plate 2 are hinged, the first torsion motor 3 is arranged on the surface of the first supporting plate 1, the second torsion motor 4 is arranged on the surface of the second supporting plate, an output shaft of the first torsion motor 3 and an output shaft of the second torsion motor 4 are arranged towards a hinging shaft of the first supporting plate 1 and the second supporting plate 2, meanwhile, the axis of the output shaft of the first torsion motor 3 and the axis of the output shaft of the second torsion motor 4 are intersected, the axis of the output shaft of the first torsion motor 3 and the axis of the output shaft of the second torsion motor 4 are perpendicularly intersected with the axis of the hinging shaft of the first supporting plate 1 and the second supporting plate 2, the clamping piece 5 is coaxially arranged on the output shaft of the first torsion motor 3 and the output shaft of the second torsion motor 4, and the rotating piece 6 can drive the first supporting plate 1 to rotate relative to the second supporting plate 2.
In the above embodiment, two ends of the cable to be tested are respectively fixed on the clamping members 5 of the output shafts of the first torsion motor 3 and the second torsion motor 4, so that the fixation of the cable to be tested is completed, the first support plate 1 and the second support plate 2 are kept on the same straight line in the initial stage of the test, at this time, the cable to be tested is in a straight line, the first torsion motor 3 and the second torsion motor 4 start to work when the test starts, torsion acting force is applied to the cable, in the test process, the first support plate 1 can be driven to rotate relative to the second support plate 2 through the rotating member 6, the condition that the cable is synchronously bent under external force while being twisted in actual work is simulated, and the test result is more true and reliable.
In some embodiments, the rotating member 6 includes a base 61, a gear ring 62, a first driving motor 63, and a first driving gear 64, the first support plate 1 is rotatably disposed on a surface of the base 61 around a hinge axis thereof, the gear ring 62 is coaxially disposed outside the first support plate 1 and the second support plate 2 around the hinge axis of the first support plate 1 and the second support plate 2, the first driving motor 63 is fixed at an end of the first support plate 1 away from the hinge axis, the first driving gear 64 is coaxially keyed to an output shaft of the first driving motor 63, and the first driving gear 64 is engaged with the gear ring 62.
In the above embodiment, the first support plate 1 is driven to rotate by the first driving motor 63, the first driving gear 64 is meshed with the ring gear 62, and therefore the first driving gear 64 rotates while rotating around the ring gear 62, thereby driving the first support plate 1 to rotate, it will be appreciated that at this time, the second support plate 2 may be fixed to the base 61.
The above structure is one example of the rotary member 6, and the ring gear 62 may be an inner ring gear or an outer ring gear.
In some embodiments, the rotating member 6 further includes a second driving motor 65 and a second driving gear 66, the second driving motor 65 is fixedly disposed at an end of the second support plate 2 remote from the hinge shaft, the second driving gear 66 is coaxially connected to an output shaft of the second driving motor 65, and the second driving gear 66 is meshed with the gear ring 62.
In the above embodiment, as a supplement to the rotating member 6, the second driving motor 65 is disposed at the end of the second support plate 2, and the second driving gear 66 is driven to rotate by the second driving motor 65, so that the second driving gear 66 can rotate relative to the gear ring 62, and finally, the second support plate 2 is driven to rotate around its hinge shaft with the first support plate 1.
Compared with the scheme that only the first supporting plate 1 rotates, the second supporting plate 2 synchronously rotates, so that the bending speed of the cable can be increased, and more testing requirements are met from Russian people.
In some embodiments, the support ring 7 is fixed on the surface of the base 61, the support ring 7 is coaxially arranged with the hinge shafts of the first support plate 1 and the second support plate 2, and the first support plate 1 and the second support plate 2 are slidably arranged on the surface of the support ring 7.
In the above embodiments, the support ring 7 is used to support the first support plate 1 and the second support plate 2, thereby providing structural support for stable rotation of the first support plate 1 and the second support plate 2 on the base 61.
In some embodiments, the support ring 7 further comprises a ball 8, a groove 71 is coaxially formed on one surface of the support ring 7 away from the base 61, the ball 8 is rollingly disposed in the groove 71, and the first support plate 1 and the second support plate 2 are both in rolling contact with the ball 8.
In the above embodiment, since the support ring 7 is simply adopted to slidably support the first support plate 1 and the second support plate 2, there may be a problem of large friction force, in order to avoid the structural wear caused by long-term sliding contact, the annular groove 71 is formed on the surface of the support ring 7, and the balls 8 are disposed in the annular groove 71, so that the friction force of the relative motion is reduced by using the rolling contact between the balls 8 and the first support plate 1 and the second support plate 2, and the stability and reliability of the structural operation are improved.
In some embodiments, the device further comprises a first linear driving device 9, the first linear driving device 9 is fixed on the surface of the first supporting plate 1, the first torsion motor 3 is fixed at the driving end of the first linear driving device 9, and the driving direction of the first linear driving device 9 is parallel to the axis direction of the rotating shaft of the first torsion motor 3.
In the above embodiment, the cable may have a problem of traction or radial extrusion during the actual use, so in order to further simulate a more complex use environment, to obtain a more realistic test result, the first linear driving device 9 is disposed on the surface of the first support plate 1, at this time, the first torsion motor 3 is connected with the first support plate 1 through the first linear driving device 9, and the first linear driving device 9 can perform linear reciprocating driving on the first torsion motor 3, so as to simulate the extrusion or traction force generated by the cable surface along the radial direction in the actual application.
In the above embodiment, when the cable is tested in a straight state, the force of the first linear driving device 9 acts in a radial direction, and when the cable is bent, the force of the first linear driving device 9 is not transmitted in the radial direction of the cable, so that the worse bending and twisting effects can be simulated.
In some embodiments, the device further comprises a second linear driving device 10, the second linear driving device 10 is fixed on the surface of the second supporting plate 2, the second torsion motor 4 is fixed on the driving end of the second linear driving device 10, and the driving direction of the second linear driving device 10 is parallel to the axis direction of the rotating shaft of the second torsion motor 4.
In the above embodiment, the second linear driving device 10 is disposed on the second supporting plate 2, so as to increase the speed of applying the extrusion or drawing force to the cable, simulate the more severe extrusion or drawing action, and increase the upper limit of the test force.
In some embodiments, the clamping member 5 includes a limiting ring 51 and a tightening post 52, the output shaft of the first torsion motor 3 and the output shaft of the second torsion motor 4 are connected with a limiting ring 51 by coaxial keys, the limiting ring 51 is provided with at least three threaded holes 511 along a circumferential array, the threaded holes 511 are provided along a radial direction of the limiting ring 51, and each threaded hole 511 is internally and respectively connected with a tightening post 52.
In the above embodiment, since the testing device needs to simulate a complex testing environment, the fixing performance of the cable has a high requirement, therefore, the clamping piece 5 adopts the limiting ring 51 as a base to limit the tail end of the cable, and simultaneously, the plurality of tightening posts 52 are utilized to tighten the surface of the cable along the circumferential direction, so as to achieve a multidirectional fixing effect, and the tightening posts 52 and the limiting ring 51 are in threaded fit, so that the cable fixing device is convenient to install and detach.
In some embodiments, the device further comprises a pressing plate 53, wherein the pressing plate 53 is hinged to one end of the propping column 52 located on the inner side of the limiting ring 51, the pressing plate 53 is in a circular arc shape, and the circular arc-shaped pressing plate 53 and the limiting ring 51 are coaxially arranged.
In the above embodiment, since the stress concentration effect of the propping portion is strong when the cable is propped by the propping column 52, and the cable receives the effects of strong torsion and bending in the testing process, the stress concentration of the propping portion easily damages the surface structure of the cable, and influences the accuracy of the testing result, the circular arc-shaped pressing plate 53 is arranged to press the cable, and the stress concentration is reduced and the clamping stability and safety are improved by increasing the contact area.
In some embodiments, the platen 53 is provided with an array of protrusions or grooves near one side surface of the cable.
In the above embodiments, the array protrusions or grooves are used to increase friction, thereby further improving the stability of clamping and avoiding sliding between the cable and the platen 53 during torsion.
In some embodiments, corresponding sensors may be provided at the positions where the first torsion motor 3 and the second torsion motor 4 are connected to the clamping member 5, for detecting the torsion force. In other embodiments, between the first torsion motor 3 and the driving end of the first support plate 1 or the first torsion motor 3 and the driving end of the first linear driving device 9, a sensor may be provided, and similarly, between the second torsion motor 4 and the second support plate 2 or the second torsion motor 4 and the driving end of the second linear driving device 10, a sensor may be provided, by which a bending force applied to the cable and a pressing or stretching force applied to the cable may be tested.
In the above embodiment, the first linear driving device 9 and the second linear driving device 10 may be linear motors.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. A cable torsion performance testing apparatus, comprising: first backup pad (1), second backup pad (2), first torsion motor (3), second torsion motor (4), clamping piece (5) and rotating piece (6), first backup pad (1) and second backup pad (2) hinge connection, first torsion motor (3) and second torsion motor (4) are installed respectively on first backup pad (1) surface and second backup pad (2) surface, the axis of the output shaft of first torsion motor (3) and the axis of the output shaft of second torsion motor (4) intersect, simultaneously, the axis of the output shaft of first torsion motor (3) and the axis of the output shaft of second torsion motor (4) all intersect perpendicularly with the axis of the articulated shaft of first backup pad (1) and second backup pad (2), all coaxial-mounted clamping piece (5) on the output shaft of first torsion motor (3) and output shaft and second torsion motor (4), rotating piece (6) can drive first backup pad (1) and rotate relative second backup pad (2).
2. The cable torsion performance test apparatus according to claim 1, wherein the rotating member (6) includes a base (61), a ring gear (62), a first driving motor (63) and a first driving gear (64), the first support plate (1) is rotatably provided on a surface of the base (61) around a hinge shaft thereof, the ring gear (62) is coaxially provided outside the first support plate (1) and the second support plate (2) around the hinge shaft of the first support plate (1) and the second support plate (2), the first driving motor (63) is fixed at an end of the first support plate (1) away from the hinge shaft, the first driving gear (64) is coaxially key-connected to an output shaft of the first driving motor (63), and the first driving gear (64) is meshed with the ring gear (62).
3. The cable torsion performance test device according to claim 2, wherein the rotating member (6) further includes a second driving motor (65) and a second driving gear (66), the second driving motor (65) is fixedly disposed at an end of the second support plate (2) away from the hinge shaft, the second driving gear (66) is coaxially connected to an output shaft of the second driving motor (65) in a key manner, and the second driving gear (66) is engaged with the ring gear (62).
4. The cable torsion performance test device according to claim 2, further comprising a support ring (7), wherein the support ring (7) is fixed on the surface of the base (61), the support ring (7) is coaxially arranged with the hinge shafts of the first support plate (1) and the second support plate (2), and the first support plate (1) and the second support plate (2) are slidably arranged on the surface of the support ring (7).
5. The cable torsion performance testing device according to claim 4, further comprising a ball (8), wherein a groove (71) is coaxially formed in one surface of the support ring (7) away from the base (61), the ball (8) is arranged in the groove (71) in a rolling manner, and the first support plate (1) and the second support plate (2) are in rolling contact with the ball (8).
6. The cable torsion performance test device according to claim 1, further comprising a first linear driving device (9), wherein the first linear driving device (9) is fixed on the surface of the first support plate (1), the first torsion motor (3) is fixed at the driving end of the first linear driving device (9), and the driving direction of the first linear driving device (9) is parallel to the axis direction of the rotating shaft of the first torsion motor (3).
7. The cable torsion performance test device according to claim 1, further comprising a second linear driving device (10), wherein the second linear driving device (10) is fixed on the surface of the second support plate (2), the second torsion motor (4) is fixed on the driving end of the second linear driving device (10), and the driving direction of the second linear driving device (10) is parallel to the axis direction of the rotating shaft of the second torsion motor (4).
8. The cable torsion performance testing device according to claim 1, wherein the clamping member (5) comprises a limiting ring (51) and a tightening column (52), the output shaft of the first torsion motor (3) and the output shaft of the second torsion motor (4) are connected with the limiting ring (51) through coaxial keys, the limiting ring (51) is provided with at least three threaded holes (511) along a circumferential array, the threaded holes (511) are provided with the limiting ring (51) along the radial direction, and each threaded hole (511) is internally and respectively provided with the tightening column (52).
9. The cable torsion performance testing device according to claim 8, further comprising a pressing plate (53), wherein the pressing plate (53) is hinged to one end of the pushing post (52) located on the inner side of the limiting ring (51), the pressing plate (53) is in a circular arc shape, and the circular arc-shaped pressing plate (53) and the limiting ring (51) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311576419.7A CN117451537A (en) | 2023-11-23 | 2023-11-23 | Cable torsion performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311576419.7A CN117451537A (en) | 2023-11-23 | 2023-11-23 | Cable torsion performance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117451537A true CN117451537A (en) | 2024-01-26 |
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ID=89579948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311576419.7A Pending CN117451537A (en) | 2023-11-23 | 2023-11-23 | Cable torsion performance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117451537A (en) |
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2023
- 2023-11-23 CN CN202311576419.7A patent/CN117451537A/en active Pending
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