Simulation testing equipment and cable testing methods for cable installation and operating environment

Abstract

This invention discloses a simulation testing device and method for cable installation and operation environment, relating to the field of cable testing technology. The simulation testing device includes: a first track component and a second track component arranged side-by-side and extending along a first preset direction; a third track mechanism disposed on the first and second track components, extending along a second preset direction; a fourth track mechanism disposed on the first and second track components, extending along the second preset direction; the third track mechanism is capable of moving back and forth along the first preset direction on the first and second track components, and / or the fourth track mechanism is capable of moving back and forth along the second preset direction on the first and second track components; a first adjustment mechanism disposed on the third track mechanism, etc. This application can assess the stress wrinkling of fixed cables within the radius and during the operating cycle based on the bending radius of cable laying for rail transit vehicles.

Description

Technical Field

[0001] This invention relates to the field of cable testing technology, and in particular to a simulation testing device and cable testing method for cable installation and operation environment. Background Technology

[0002] The development direction of rail transit vehicles needs to meet the requirements of green, safe, and lightweight design. The cables on the locomotives are the "nerves" and "blood vessels" of rail transit vehicles, and their implementation standards mainly include European, French, Japanese, and Chinese standards, among others. The operating environment of rail transit vehicles is complex; therefore, in addition to meeting the standards, fixed cables must still meet the requirement of no stress wrinkling within the laying radius and operating cycle, while dynamic cables must meet the requirement of no cracking in the cable insulation and sheath layers and no broken conductors under long-term vibration and torsion caused by the vehicle body.

[0003] Chinese Patent Publication No. CN114441339A discloses a reciprocating bending test device for cable specimens. The device includes a frame assembly, a speed transmission mechanism assembly, and a pulley assembly, which can perform repeated bending tests on various large-diameter cable specimens under harsh conditions to evaluate the flexibility of the cable.

[0004] The cable laying environment in rail transit vehicles is complex, requiring realistic simulation of actual cable laying conditions to assess stress wrinkling within the cable's service life under different bending radii, and to determine if the insulation and sheath layers are free from cracking and conductor breakage. Current technology only assesses and tests the cable's flexibility and cannot evaluate stress wrinkling within the bending radius of rail transit vehicle cables during their operating cycle. Furthermore, current technology cannot assess the absence of cracking in the cable insulation and sheath layers and conductor breakage under vibration and torsion caused by the vehicle body within the bending radius. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a simulation test equipment and cable test method for cable installation and operation environment, which can evaluate the stress wrinkling of fixed cable within the radius and operation cycle according to the bending radius of cable laying for rail transit vehicles.

[0006] The specific technical solution of this invention is as follows:

[0007] A simulation test device for cable installation and operation environment, the simulation test device comprising:

[0008] A first track component and a second track component arranged side by side and extending along a first preset direction;

[0009] A third track mechanism is disposed on the first track component and the second track component, and the third track mechanism extends along a second preset direction;

[0010] A fourth track mechanism is provided on the first track member and the second track member, the fourth track mechanism extending along a second preset direction; the third track mechanism is capable of moving back and forth on the first track member and the second track member along the first preset direction, and / or the fourth track mechanism is capable of moving back and forth on the first track member and the second track member along the second preset direction;

[0011] A first adjustment mechanism is provided on the third track mechanism. The first adjustment mechanism is capable of moving back and forth on the third track mechanism along the second preset direction. The first adjustment mechanism has a first fixing member for fixing one end of the cable to be tested, and the position of the first fixing member can be adjusted in the vertical direction and the second preset direction.

[0012] The second adjustment mechanism is provided on the fourth track mechanism. The second adjustment mechanism is capable of moving back and forth on the fourth track mechanism along the second preset direction. The second adjustment mechanism has a second fixing member for fixing the other end of the cable to be tested, and the position of the second fixing member can be adjusted in the vertical direction and the second preset direction.

[0013] Preferably, the first preset direction is perpendicular to the second preset direction.

[0014] Preferably, the third track mechanism includes a first drive mechanism, which is connected to the first track component and / or the second track component in a transmission manner, so that the third track mechanism moves back and forth on the first track component and the second track component along the first preset direction under the control of the first drive mechanism.

[0015] Preferably, the fourth track mechanism includes a second drive mechanism, which is connected to the first track component and / or the second track component in a transmission manner, so that the fourth track mechanism moves back and forth on the first track component and the second track component along the first preset direction under the control of the second drive mechanism.

[0016] Preferably, the third track mechanism includes a third track component, and the first adjustment mechanism is mounted on the third track component. The first adjustment mechanism includes a third drive mechanism, which is connected to the third track component in a transmission manner, so that the first adjustment mechanism moves back and forth on the third track component along the second preset direction under the control of the third drive mechanism.

[0017] Preferably, the fourth track mechanism includes a fourth track component, the second adjustment mechanism is mounted on the fourth track component, the second adjustment mechanism includes a fourth drive mechanism, the fourth drive mechanism is connected to the fourth track component in a transmission manner, so that the second adjustment mechanism moves back and forth on the fourth track component along the second preset direction under the control of the fourth drive mechanism.

[0018] Preferably, the first adjustment mechanism includes a first plate mechanism extending along a vertical direction and a second preset direction. The first plate mechanism has a first track groove. The first track groove includes a first segment of the first track groove, a second segment of the first track groove, ..., the Nth segment of the first track groove connected in sequence. The Mth segment of the first track groove is perpendicular to the (M-1)th segment of the first track groove, where M is less than or equal to N. The first track groove gradually extends from the center of the plate mechanism outwards in a loop-shaped trend through the first segment of the first track groove, the second segment of the first track groove, ..., the Nth segment of the first track groove. The first segment of the first track groove, the second segment of the first track groove, ..., the Nth segment of the first track groove extends vertically or in the second preset direction.

[0019] The first fixing member is located in the first track groove and can move in the first track groove so that the position of the first fixing member can be adjusted in the vertical direction and the second preset direction;

[0020] A first drive chain is installed in the first track groove, and the first drive chain is closed around the first track groove; the first fixing member is fixed to the first drive chain.

[0021] The first adjustment mechanism further includes a fifth drive mechanism capable of driving the first transmission chain to rotate.

[0022] Preferably, the second adjustment mechanism includes a second plate mechanism extending along the vertical direction and the second preset direction. The second plate mechanism has a second track groove. The second track groove includes a first segment of the second track groove, a second segment of the second track groove, ..., the Nth segment of the second track groove connected in sequence. The Mth segment of the second track groove is perpendicular to the (M-1)th segment of the second track groove, wherein M is less than or equal to N. The second track groove gradually extends from the center of the plate mechanism in a loop-shaped trend from the surrounding area through the first segment of the second track groove, the second segment of the second track groove, ..., the Nth segment of the second track groove. The first segment of the second track groove, the second segment of the second track groove, ..., the Nth segment of the second track groove extends vertically or in the second preset direction.

[0023] The second fixing member is located in the second track groove and can move in the second track groove so that the position of the second fixing member can be adjusted in the vertical direction and the second preset direction;

[0024] A second drive chain is installed in the second track groove, and the second drive chain is closed around the second track groove; the second fixing member is fixed to the second drive chain.

[0025] The second adjustment mechanism further includes a sixth drive mechanism capable of driving the second transmission chain to rotate.

[0026] A cable testing method using a simulation test device employing any of the cable installation and operating environments described above, comprising:

[0027] Determine the cable length and the spatial positions of both ends of the cable based on the actual cable laying conditions.

[0028] The two sides of the cable are respectively installed on the first fixing member and the second fixing member, and the length of the cable from the point where the cable contacts the first fixing member to the point where the cable contacts the second fixing member is equal to the length of the cable to be laid.

[0029] The third and fourth track mechanisms are controlled to move on the first and second track components, and the first and second fixing components are controlled to adjust in the vertical direction and the second preset direction, or the first adjusting mechanism is controlled to move on the third track mechanism, or the second adjusting mechanism is controlled to move on the fourth track mechanism, until the spatial position of both ends of the cable is the same as the actual laying situation, so that the bending radius of the cable is consistent with the actual laying bending radius.

[0030] After the bending radius of the cable is consistent with the actual bending radius of the cable during installation, the stress wrinkling condition of the cable during the maintenance cycle is tested.

[0031] A cable testing method using a simulation test device employing any of the cable installation and operating environments described above, comprising:

[0032] Determine the cable length and the spatial positions of both ends of the cable based on the actual cable laying conditions.

[0033] The two sides of the cable are respectively installed on the first fixing member and the second fixing member, and the length of the cable from the point where the cable contacts the first fixing member to the point where the cable contacts the second fixing member is equal to the length of the cable to be laid.

[0034] The third and fourth track mechanisms are controlled to move on the first and second track components, and the first and second fixing components are controlled to adjust in the vertical direction and the second preset direction, or the first adjustment mechanism is controlled to move on the third track mechanism, or the second adjustment mechanism is controlled to move on the fourth track mechanism, until the spatial position of both ends of the cable is the same as the actual laying situation, so that the bending radius of the cable is consistent with the actual laying bending radius.

[0035] After the bending radius of the cable is consistent with the actual bending radius of the cable, the first adjusting mechanism is controlled to move back and forth on the third track mechanism or the second adjusting mechanism is controlled to move back and forth on the fourth track mechanism. The third track mechanism and / or the fourth track mechanism are controlled to move back and forth on the first track component and the second track component, thereby simulating the long-term torsion of the cable on the rail transit vehicle, and then testing the cracking of the insulation layer or sheath layer of the cable and / or the breakage of the conductor filament of the cable.

[0036] The technical solution of the present invention has the following significant beneficial effects:

[0037] This application allows for the establishment of a three-dimensional coordinate system by moving the third and fourth track mechanisms on the first and second track components, moving the first adjustment mechanism on the third track mechanism, moving the second adjustment mechanism on the fourth track mechanism, and adjusting the first and second fixing components in the vertical direction and the second preset direction. This enables the spatial determination of the cable's position under test, ensuring that the simulated cable position matches the actual cable laying position. This allows for the simulation of different bending radii during cable laying and the evaluation of cable stress wrinkling over its lifespan. Furthermore, by controlling the reciprocating movement of the first adjustment mechanism on the third track mechanism or the reciprocating movement of the second adjustment mechanism on the fourth track mechanism, and controlling the reciprocating movement of the third and / or fourth track mechanisms on the first and second track components under different bending radii during cable laying, the long-term torsion of the cable on rail transit vehicles can be simulated. This allows for the testing of the cable's insulation or sheath layer cracking and / or the breakage of individual conductor filaments. In summary, the above simulations can yield statistical data on the simulated operation of cables for different types of rail transit vehicles, providing a basis for actual cable operation and maintenance.

[0038] Specific embodiments of the invention are disclosed in detail below with reference to the description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the invention are not therefore limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0039] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0040] Figure 1 This is a front view of the simulation test equipment for cable installation and operation environment in an embodiment of the present invention;

[0041] Figure 2 This is a side view of the simulation test equipment for cable installation and operation environment in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the first fixing member being fixedly connected to the first transmission chain in the first track groove in an embodiment of the present invention.

[0043] The reference numerals in the above figures are as follows:

[0044] 1. Base; 2. First track component; 3. Second track component; 4. Third track mechanism; 41. Third track component; 5. Fourth track mechanism; 6. First adjustment mechanism; 61. First fixing component; 62. First plate mechanism; 621. First track groove; 6211. First section of first track groove; 6212. Second section of first track groove; 622. First transmission chain; 7. Second adjustment mechanism; 71. Second fixing component; 8. Cable; 9. Control unit. Detailed Implementation

[0045] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] In order to assess the stress wrinkling of fixed cables within the bending radius and during the operating cycle based on the bending radius of cables laid for rail transit vehicles, this application proposes a simulation testing device for cable installation and operating environment. Figure 1 This is a front view of the simulation test equipment for cable installation and operation environment in an embodiment of the present invention. Figure 2 This is a side view of the simulation test equipment for cable installation and operation environment in an embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the simulation test equipment for cable installation and operation environment includes: a first track component 2, a second track component 3, a third track mechanism 4, a fourth track mechanism 5, a first adjustment mechanism 6, and a second adjustment mechanism 7.

[0048] like Figure 1 and Figure 2As shown, the first track component 2 and the second track component 3 are arranged side by side, and can be parallel to each other. Simultaneously, the first track component 2 and the second track component 3 extend along a first preset direction. A third track mechanism 4 is disposed on the first track component 2 and the second track component 3, with one side of the third track mechanism 4 mounted on the first track component 2 and the other side of the third track mechanism 4 mounted on the first track component 2. The first track component 2 and the second track component 3 support the third track mechanism 4 and ensure the stable balance of both sides of the third track mechanism 4. The third track mechanism 4 can extend along a second preset direction, and the second preset direction has a non-zero angle with the first preset direction. The third track mechanism 4 is disposed on one side of the first track component 2 and the second track component 3. A fourth track mechanism 5 is also disposed on the first track component 2 and the second track component 3, and is disposed on the other side of the first track component 2 and the second track component 3. The fourth track mechanism 5 extends along the second preset direction.

[0049] The third track mechanism 4 is capable of moving back and forth along the first preset direction on the first track member 2 and the second track member 3, and / or the fourth track mechanism 5 is capable of moving back and forth along the second preset direction on the first track member 2 and the second track member 3. The third track mechanism 4 may include a first drive mechanism, which is connected to the first track member 2 and / or the second track member 3 to enable the third track mechanism 4 to move back and forth along the first preset direction on the first track member 2 and the second track member 3 under the control of the first drive mechanism. The third track mechanism 4 may include a third track mechanism base, with through holes on both sides, such as... Figure 2 As shown, the first track member 2 and the second track member 3 pass through the through holes on both sides of the base of the third track mechanism. A first drive mechanism can be installed inside the base of the third track mechanism. The first drive mechanism may include a first traction motor and a first transmission mechanism fixedly installed on the base of the third track mechanism. The first transmission mechanism is connected to the first traction motor and either the first track member 2 or the second track member 3, enabling the third track mechanism 4 to move back and forth along the first preset direction on the first track member 2 and the second track member 3. For example, the first track member 2 and / or the second track member 3 have rack portions, and the first transmission mechanism includes at least one gear. The first traction motor meshes with the rack portion on the first track member 2 and / or the second track member 3 via the gear. The first transmission mechanism may also include a reduction mechanism to reduce the speed of the first traction motor.

[0050] Similarly, the fourth track mechanism 5 may include a second drive mechanism, which is connected to the first track member 2 and / or the second track member 3 for transmission, so that the fourth track mechanism 5 moves back and forth on the first track member 2 and the second track member 3 along the first preset direction under the control of the second drive mechanism. The fourth track mechanism 5 may include a fourth track mechanism base, with through holes on both sides, such as... Figure 2 As shown, the first track component 2 and the second track component 3 pass through the through holes on both sides of the base of the fourth track mechanism. The second drive mechanism can be installed inside the base of the fourth track mechanism. The second drive mechanism may include a second traction motor and a second transmission mechanism fixedly installed on the base of the fourth track mechanism. The second transmission mechanism is connected to the second traction motor and either the first track component 2 or the second track component 3, enabling the fourth track mechanism 5 to move back and forth along the first preset direction on the first track component 2 and the second track component 3. The second transmission mechanism can be the same as the first transmission mechanism, and will not be described further here.

[0051] The above structure allows for adjustment of the positions of the third track mechanism 4 and the fourth track mechanism 5 on the first track component 2 and the second track component 3. It also allows for control of the third track mechanism 4 and / or the fourth track mechanism 5 to move back and forth within a preset range on the first track component 2 and the second track component 3, thereby simulating the swaying of the cable on the rail transit vehicle in the forward and backward directions of the rail transit vehicle.

[0052] like Figure 1 and Figure 2As shown, the first adjustment mechanism 6 is disposed on the third track mechanism 4. The first adjustment mechanism 6 is capable of moving back and forth along the second preset direction on the third track mechanism 4. Alternatively, the third track mechanism 4 includes a third track member 41, and the first adjustment mechanism 6 is mounted on the third track member 41. The first adjustment mechanism 6 includes a third drive mechanism, which is drively connected to the third track member 41, so that the first adjustment mechanism 6 moves back and forth along the second preset direction on the third track member 41 under the control of the third drive mechanism. The first adjustment mechanism 6 may include a first adjustment mechanism base, on which a through hole is formed along the second preset direction, and the third track member 41 passes through the through hole of the first adjustment mechanism base. The third drive mechanism may include a third traction motor and a third transmission mechanism fixedly mounted on the first adjustment mechanism base, and the third transmission mechanism is drively connected to the third traction motor and the third track member 41 respectively, so that the first adjustment mechanism 6 can move back and forth along the second preset direction on the third track member 41, and the position of the first adjustment mechanism 6 on the third track member 41 can be controlled. For example, the third track member 41 may have a rack portion, and the third transmission mechanism includes at least one gear, through which the third traction motor meshes with the rack portion on the third track member 41. The third transmission mechanism may also include a reduction mechanism to reduce the speed of the third traction motor.

[0053] Similarly, the second adjustment mechanism 7 can be disposed on the fourth track mechanism 5, and the second adjustment mechanism 7 can move back and forth on the fourth track mechanism 5 along the second preset direction. Alternatively, the fourth track mechanism 5 includes a fourth track member, and the second adjustment mechanism 7 is mounted on the fourth track member. The second adjustment mechanism 7 includes a fourth drive mechanism, which is drive-connected to the fourth track member, so that the first adjustment mechanism 6 moves back and forth on the third track member 41 along the second preset direction under the control of the third drive mechanism. The second adjustment mechanism 7 may include a base, on which a through hole is formed along the second preset direction, and the fourth track member passes through the through hole of the base. The fourth drive mechanism may include a fourth traction motor and a fourth transmission mechanism fixedly mounted on the base of the second adjustment mechanism 7, which are drive-connected to the fourth traction motor and the fourth track member respectively, so that the second adjustment mechanism 7 can move back and forth on the fourth track member along the second preset direction, and the position of the second adjustment mechanism 7 on the fourth track member can be controlled.

[0054] like Figure 1 and Figure 2As shown, the first adjustment mechanism 6 has a first fixing member 61 for fixing one end of the cable 8 to be tested, and the position of the first fixing member 61 can be adjusted in the vertical direction and the second preset direction. The second adjustment mechanism 7 has a second fixing member 71 for fixing the other end of the cable 8 to be tested, and the position of the second fixing member 71 can be adjusted in the vertical direction and the second preset direction. For example, the first fixing member 61 may include a gland for fixing the cable 8.

[0055] To enable the position of the first fixing member 61 to be adjusted in the vertical direction and the second preset direction, the first adjustment mechanism 6 may include a first plate mechanism 62 extending along the vertical direction and the second preset direction. The first plate mechanism 62 has a first track groove 621. The first track groove 621 includes a first segment 6211, a second segment 6212, ..., an Nth segment 621 connected in sequence. The Mth segment 621 is perpendicular to the (M-1)th segment 621, where M is less than or equal to N. The first track groove 621 gradually extends from the center of the plate mechanism outwards in a loop-shaped trend through the sequentially connected first segment 6211, second segment 6212, ..., Nth segment 621. The first track groove 6211, the second track groove 6212, ... the Nth track groove 621 extend vertically or in the second preset direction. This allows the first track groove 621 to easily form a relative coordinate system in the horizontal and vertical directions, facilitating subsequent adjustment of the position of the first fixing member 61. The first fixing member 61 is located within the first track groove 621 and can move within it, allowing its position to be adjusted vertically and in the second preset direction.

[0056] To enable the first fixing member 61 to move and adjust within the first track groove 621, thereby changing its position in the vertical direction and the second preset direction, a first transmission chain 622 is installed in the first track groove 621. The first transmission chain 622 can be disposed on the side wall of the first track groove 621, and the first transmission chain 622 is in a closed state, wrapping around the first track groove 621. In each segment of the first track groove 621, the first transmission chain 622 is respectively disposed within the side walls on both sides of each segment of the first track groove 621. Specifically, the shape or structure of the side walls can be used to limit the first transmission chain 622 to prevent it from detaching from the side walls of each segment of the first track groove 621. Figure 3 This is a schematic diagram of the first fixing member 61 being fixedly connected to the first transmission chain 622 in the first track groove 621 in an embodiment of the present invention, as shown below. Figure 3 As shown, the first fixing member 61 can be fixed to the first transmission chain 622 by a fixing mechanism. When the cable 8 to be tested is fixed by the first fixing member 61, as it moves along the first fixing member 61 in the first track groove 621, the cable 8 to be tested is twisted by 90 degrees for each section of the first track groove 621 it moves through. This process continues, and the maximum angle by which the cable 8 to be tested can be twisted can be determined based on the number of turns of the loop-shaped first track groove 621. Through this structure, the degree of twist of the cable 8 to be tested in the radial plane can be adjusted by the first fixing member 61.

[0057] The first adjustment mechanism 6 may further include a fifth drive mechanism capable of driving the first transmission chain 622 to rotate. The fifth drive mechanism may include a fifth traction motor and a fifth transmission mechanism fixedly installed within the first plate mechanism 62. The fifth transmission mechanism includes at least one gear, and the fifth traction motor meshes with the first transmission chain 622 through a reduction mechanism and the gear. When it is necessary to adjust the position of the first fixing member 61 in the vertical direction and the second preset direction, the fifth traction motor drives the first transmission chain 622 to move in the first track groove 621, thereby moving the first fixing member 61. Since the first track groove 621 extends gradually from the center of the plate mechanism outwards in a loop-shaped trend through the sequentially connected first section first track groove 6211, second section first track groove 6212, ... Nth section first track groove 621, the first fixing member 61 can be adjusted to near or at the target position in the first track groove 621. The smaller the width of the first plate mechanism 62 between each segment of the first track groove 621 and its adjacent segment in the horizontal or vertical direction, the closer the first fixing member 61 can be adjusted to the target position within the first track groove 621. Combined with the ability of the first adjustment mechanism 6 to move back and forth along the second preset direction on the third track mechanism 4, the first fixing member 61 can be precisely adjusted to a position that satisfies the target position in the second preset direction.

[0058] Similarly, the second adjustment mechanism 7 may include a second plate mechanism extending along the vertical direction and the second preset direction. The second plate mechanism has a second track groove, which includes a first segment of the second track groove, a second segment of the second track groove, ..., an Nth segment of the second track groove connected in sequence. The Mth segment of the second track groove is perpendicular to the (M-1)th segment of the second track groove, where M is less than or equal to N. The second track groove extends gradually from the center of the plate mechanism outwards in a loop-like pattern through the sequentially connected first segment of the second track groove, the second segment of the second track groove, ..., an Nth segment of the second track groove. The first segment of the second track groove, the second segment of the second track groove, ..., an Nth segment of the second track groove extends vertically or in the second preset direction. The second fixing member 71 is located in the second track groove and can move within the second track groove to adjust its position in the vertical direction and the second preset direction. A second transmission chain is installed in the second track groove, and the second transmission chain wraps around the second track groove in a closed state. The second fixing member 71 is fixed to the second transmission chain. The second adjusting mechanism 7 further includes a sixth driving mechanism capable of driving the second transmission chain to rotate. The sixth driving mechanism may include a sixth traction motor and a sixth transmission mechanism fixedly installed within the second plate body mechanism. The sixth transmission mechanism includes at least one gear, and the sixth traction motor meshes with the sixth transmission chain via a reduction mechanism and the gear. The second adjusting mechanism 7 has the same structure and principle as the first adjusting mechanism 6, and will not be described further here.

[0059] The simulation testing equipment for cable installation and operation environment may include a control unit 9. The control unit 9 is electrically connected to the first, second, third, fourth, fifth, and sixth traction motors to control their operation, thereby controlling the relative position of the first fixing member 61 and the second fixing member 71 in the three-dimensional coordinate system. This controls the bending radius between the two ends of the cable under test 8, and the relative rotation angle between the first fixing member 61 and the second fixing member 71, i.e., the degree of torsion between the two ends of the cable under test 8. By controlling the operation of the first and second traction motors, the cable swaying during the start-stop, acceleration, and deceleration processes of rail transit vehicles can be simulated. By controlling the operation of the third and fourth traction motors, the cable torsion during the turning and swaying of rail transit vehicles can be simulated.

[0060] Since the first fixing member 61 can move in the vertical direction of the first adjusting mechanism 6, and the second fixing member 71 can also move in the vertical direction of the first adjusting mechanism 6, the two can work together to adjust the degree of torsion of the cable under test in the radial plane to meet the requirements, and at the same time adjust the distance difference between the two ends of the cable under test in the vertical direction to be the same as that of the actual cable.

[0061] Specific scales can be set on the first track groove 621 and the second track groove to form a planar coordinate system with the vertical direction and the second preset direction. Combined with the movement of the third track mechanism 4 and the fourth track mechanism 5 on the first track component 2 and the second track component 3, the movement of the first adjustment mechanism 6 on the third track mechanism 4, and the movement of the second adjustment mechanism 7 on the fourth track mechanism 5, a complete three-dimensional coordinate system can be established to determine the spatial position of the simulated test cable, thereby ensuring that the position of the simulated test cable is consistent with the position of the actual laid cable.

[0062] By cooperating between the first fixing member 61 in the position of the first adjusting mechanism 6 and the second fixing member 71 in the position of the second adjusting mechanism 7, and by cooperating with the first adjusting mechanism 6 moving along the second preset direction on the third track mechanism 4 and the second adjusting mechanism 7 moving along the second preset direction on the fourth track mechanism 5, the bending radius of the cable installed on the first fixing member 61 and the second fixing member 71 can be made consistent with the actual laying bending radius, and the degree of twist of the cable installed on the first fixing member 61 and the second fixing member 71 can be made consistent with the degree of twist of the actual laid cable.

[0063] As a feasible option, the simulation testing equipment for the cable installation and operating environment also includes: a base 1. A first rail component 2 and a second rail component 3 are fixedly mounted on the base 1. The base 1 is capable of vibration to simulate the vibration environment of rail transit vehicles. A control unit 9 is electrically connected to the base 1 and is used to control whether the base 1 vibrates and the degree of vibration.

[0064] This application also proposes a cable testing method using a simulation test device with the aforementioned cable installation and operating environment. This cable testing method may include the following steps:

[0065] Determine the cable length and the spatial positions of both ends of the cable based on the actual cable laying conditions.

[0066] The two sides of the cable are respectively installed on the first fixing member 61 and the second fixing member 71, and the length of the cable between the point where the cable contacts the first fixing member 61 and the point where the cable contacts the second fixing member 71 is equal to the length of the laid cable.

[0067] The third track mechanism 4 and the fourth track mechanism 5 are controlled to move on the first track component 2 and the second track component 3, and the first fixing component 61 and the second fixing component 71 are controlled to adjust in the vertical direction and the second preset direction, or the first adjusting mechanism 6 is controlled to move on the third track mechanism 4, or the second adjusting mechanism 7 is controlled to move on the fourth track mechanism 5, until the spatial position of both ends of the cable is the same as the actual laying situation, so that the bending radius of the cable is consistent with the actual laying bending radius.

[0068] After the bending radius of the cable is consistent with the actual bending radius of the cable during installation, the stress wrinkling condition of the cable during the maintenance cycle is tested.

[0069] Furthermore, when it is necessary to make the bending radius of the cable consistent with the actual bending radius during laying, and at the same time, it is also necessary to make the degree of twist of the cable consistent with the degree of twist during laying, the first fixing member 61 and the second fixing member 71 can be moved in the first track groove 621 and the second track groove respectively, so that the degree of twist of the cable is consistent with the degree of twist during laying.

[0070] Simultaneously, by moving the first fixing member 61 and the second fixing member 71 in the first track groove 621 and the second track groove respectively, it is necessary to ensure that the vertical distance between the two ends of the cable is the same as the actual vertical distance during laying. Since it is necessary to ensure that the degree of cable twist is consistent with the actual twist during laying, it may not be possible to achieve the same distance between the two ends of the cable in the second preset direction as the actual distance during laying by moving the first fixing member 61 and the second fixing member 71 in the first track groove 621 and the second track groove respectively. In this case, the distance between the two ends of the cable in the second preset direction can be achieved by controlling the first adjusting mechanism 6 to move on the third track mechanism 4, or by controlling the second adjusting mechanism 7 to move on the fourth track mechanism 5. Furthermore, the third track mechanism 4 and the fourth track mechanism 5 can be controlled to move on the first track member 2 and the second track member 3, so that the distance between the two ends of the cable in the first preset direction is the same as the actual distance during laying, making the bending radius of the cable consistent with the actual bending radius during laying.

[0071] Under the above conditions, it is possible to test the cable stress wrinkling under the operating cycle when the cable bending radius is consistent with the actual laying bending radius and the cable torsion degree is consistent with the actual laying torsion degree.

[0072] This application also proposes another cable testing method using the above-mentioned cable installation and operating environment simulation test equipment, which may include the following steps:

[0073] Determine the cable length and the spatial positions of both ends of the cable based on the actual cable laying conditions.

[0074] The two sides of the cable are respectively installed on the first fixing member 61 and the second fixing member 71, and the length of the cable between the point where the cable contacts the first fixing member 61 and the point where the cable contacts the second fixing member 71 is equal to the length of the laid cable.

[0075] The third track mechanism 4 and the fourth track mechanism 5 are controlled to move on the first track component 2 and the second track component 3, and the first fixing component 61 and the second fixing component 71 are controlled to adjust in the vertical direction and the second preset direction, or the first adjusting mechanism 6 is controlled to move on the third track mechanism 4, or the second adjusting mechanism 7 is controlled to move on the fourth track mechanism 5, until the spatial position of both ends of the cable is the same as the actual laying situation, so that the bending radius of the cable is consistent with the actual laying bending radius. In the above process, the conductor resistance information of the cable under test can be monitored in real time. When an abnormal resistance occurs, the conductor wire breakage is checked to determine the conductor wire breakage that occurred during the cable bending process.

[0076] After the bending radius of the cable is consistent with the actual bending radius of the cable, the first adjusting mechanism 6 is controlled to move back and forth on the third track mechanism 4 or the second adjusting mechanism 7 is controlled to move back and forth on the fourth track mechanism 5. The third track mechanism 4 and / or the fourth track mechanism 5 are controlled to move back and forth on the first track component 2 and the second track component 3, thereby simulating the long-term torsion of the cable on the rail transit vehicle, and then testing the cracking of the insulation layer or sheath layer of the cable and / or the breakage of the conductor filament of the cable.

[0077] In the above steps, the amplitude of the back-and-forth movement of the first adjusting mechanism 6 on the third track mechanism 4, the amplitude of the back-and-forth movement of the second adjusting mechanism 7 on the fourth track mechanism 5, and the amplitude of the back-and-forth movement of the third track mechanism 4 and / or the fourth track mechanism 5 on the first track component 2 and the second track component 3 are all within different preset ranges. These different preset ranges are determined by the degree of long-term swaying of the cable in different directions on the rail transit vehicle, such as swaying in the front-to-back direction or swaying in the left-to-right direction when the vehicle turns. During the testing process to obtain the condition of the cable insulation layer or sheath layer cracking and / or the condition of the cable conductor single filament breakage, the control unit 9 can record the number of times the first adjusting mechanism 6 moves back and forth on the third track mechanism 4 or controls the second adjusting mechanism 7 to move back and forth on the fourth track mechanism 5 when the cable insulation layer or sheath layer cracks and / or the cable conductor single filament breaks, and control the number of times the third track mechanism 4 and / or the fourth track mechanism 5 swings back and forth on the first track component 2 and the second track component 3.

[0078] Furthermore, when it is necessary to ensure that the bending radius of the cable matches the actual bending radius during installation, and simultaneously ensure that the degree of twist of the cable matches the degree of twist during installation, the first fixing member 61 and the second fixing member 71 can be moved within the first track groove 621 and the second track groove, respectively, to ensure that the degree of twist of the cable matches the degree of twist during installation. Similarly, the movement of the first fixing member 61 and the second fixing member 71 within the first track groove 621 and the second track groove, respectively, also ensures that the vertical distance between the two ends of the cable is the same as the vertical distance during installation. Alternatively, the movement of the first adjusting mechanism 6 on the third track mechanism 4, or the movement of the second adjusting mechanism 7 on the fourth track mechanism 5, can achieve the goal of ensuring that the distance between the two ends of the cable in the second preset direction is the same as the distance in that direction during installation. The movement of the third track mechanism 4 and the fourth track mechanism 5 on the first track member 2 and the second track member 3 can be further controlled to ensure that the distance between the two ends of the cable in the first preset direction is the same as the distance in that direction during installation, ultimately ensuring that the bending radius of the cable matches the actual bending radius during installation.

[0079] Under the above circumstances, when the bending radius of the cable is consistent with the actual laying bending radius and the degree of torsion of the cable is consistent with the degree of torsion during actual laying, the first adjusting mechanism 6 can be controlled to move back and forth on the third track mechanism 4, or the second adjusting mechanism 7 can be controlled to move back and forth on the fourth track mechanism 5. The third track mechanism 4 and / or the fourth track mechanism 5 can be controlled to move back and forth on the first track component 2 and the second track component 3, thereby simulating the long-term torsion of the cable on the rail transit vehicle, and then testing the cracking of the insulation layer or sheath layer of the cable and / or the breakage of the conductor filament of the cable.

[0080] In the two cable testing methods described above, the vibration function of base 1 can be activated and adjusted to different vibration levels to simulate varying degrees of vibration in rail transit vehicles. For example, once the bending radius of the cable matches the actual laying bending radius, the cable stress wrinkling during the maintenance operating cycle can be tested under vibration. Similarly, when the bending radius of the cable matches the actual laying bending radius, and the degree of torsion of the cable matches the degree of torsion during actual laying, the cable stress wrinkling during the maintenance operating cycle can be tested under vibration. Furthermore, when the bending radius of the cable matches the actual laying bending radius, simulating the long-term torsion of a cable on a rail transit vehicle, the cracking of the cable's insulation or sheath layer and / or the breakage of a single conductor filament can be tested under vibration. Again, when the bending radius of the cable matches the actual laying bending radius, the degree of torsion of the cable matches the degree of torsion during actual laying, and the long-term torsion of a cable on a rail transit vehicle is simulated, the cracking of the cable's insulation or sheath layer and / or the breakage of a single conductor filament can be tested under vibration.

[0081] This application allows for the establishment of a three-dimensional coordinate system by the movement of the third track mechanism 4 and the fourth track mechanism 5 on the first track component 2 and the second track component 3, the movement of the first adjustment mechanism 6 on the third track mechanism 4, the movement of the second adjustment mechanism 7 on the fourth track mechanism 5, and the adjustment of the first fixing component 61 and the second fixing component 71 in the vertical direction and the second preset direction. This spatially determines the spatial position of the cable under test, ensuring that the simulated position of the cable under test is consistent with the actual cable laying position. Furthermore, it simulates different bending radii during cable laying and evaluates the cable stress wrinkling during its lifespan. Additionally, by controlling the reciprocating movement of the first adjustment mechanism 6 on the third track mechanism 4 or the reciprocating movement of the second adjustment mechanism 7 on the fourth track mechanism 5, and controlling the reciprocating movement of the third track mechanism 4 and / or the fourth track mechanism 5 on the first track component 2 and the second track component 3, the long-term torsion of the cable on rail transit vehicles can be simulated, thereby testing the cracking of the cable's insulation or sheath layer and / or the breakage of the cable's conductor filaments. In summary, the above simulations can yield statistical data on the simulated operation of cables for different types of rail transit vehicles, providing a basis for the actual operation and maintenance of the cables.

[0082] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0083] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A simulation test device for a cable installation and operating environment, characterized by The simulation test device for cable installation and operation environment comprises: a first track member and a second track member arranged side by side and extending along a first preset direction; a third track mechanism arranged on the first track member and the second track member and extending along a second preset direction; a fourth track mechanism arranged on the first track member and the second track member and extending along the second preset direction; the third track mechanism is capable of moving back and forth on the first track member and the second track member along the first preset direction, and / or the fourth track mechanism is capable of moving back and forth on the first track member and the second track member along the second preset direction; a first adjusting mechanism arranged on the third track mechanism and capable of moving back and forth on the third track mechanism along the second preset direction, the first adjusting mechanism having a first fixing member for fixing one end of a cable to be tested, and the position of the first fixing member is capable of being adjusted in a vertical direction and the second preset direction; a second adjusting mechanism arranged on the fourth track mechanism and capable of moving back and forth on the fourth track mechanism along the second preset direction, the second adjusting mechanism having a second fixing member for fixing the other end of the cable to be tested, and the position of the second fixing member is capable of being adjusted in a vertical direction and the second preset direction; wherein the first adjusting mechanism comprises a first plate body mechanism extending along a vertical direction and the second preset direction, the first plate body mechanism having a first track groove thereon, the first track groove comprising a first section of first track groove, a second section of first track groove,..., an Nth section of first track groove connected in sequence, an Mth section of first track groove and an M-1th section of first track groove being in a perpendicular state, wherein M is less than or equal to N, the first track groove gradually extending from the middle of the plate body mechanism to the periphery in a back shape trend through the first section of first track groove, the second section of first track groove,..., the Nth section of first track groove connected in sequence, the first section of first track groove, the second section of first track groove,..., the Nth section of first track groove extending in a vertical direction or extending in the second preset direction; the first fixing member is located in the first track groove and is capable of moving in the first track groove to adjust the position of the first fixing member in a vertical direction and the second preset direction; a first transmission chain is installed in the first track groove, the first transmission chain winding around the first track groove and being in a closed state; the first fixing member is fixed on the first transmission chain; the first adjusting mechanism further comprises a fifth driving mechanism capable of driving the first transmission chain to rotate.

2. The electrical cable installation and operational environment simulation test apparatus of claim 1, wherein, the first preset direction is perpendicular to the second preset direction.

3. The electrical cable installation and operational environment simulation test apparatus of claim 1, wherein, the third track mechanism comprises a first driving mechanism in transmission connection with the first track member and / or the second track member, so that the third track mechanism moves back and forth on the first track member and the second track member along the first preset direction under the control of the first driving mechanism.

4. A cable installation and operational environment simulation test apparatus according to claim 3, characterised in that, The fourth track mechanism comprises a second driving mechanism which is in transmission connection with the first track piece and / or the second track piece, so that the fourth track mechanism moves back and forth on the first track piece and the second track piece in the first preset direction under the control of the second driving mechanism.

5. The cable installation and operational environment simulation test apparatus of claim 1, wherein, The third track mechanism comprises a third track piece, and the first adjusting mechanism is mounted on the third track piece. The first adjusting mechanism comprises a third driving mechanism which is in transmission connection with the third track piece, so that the first adjusting mechanism moves back and forth on the third track piece in the second preset direction under the control of the third driving mechanism.

6. A cable installation and operational environment simulation test apparatus according to claim 5, characterised in that, The fourth track mechanism comprises a fourth track piece, and the second adjusting mechanism is mounted on the fourth track piece. The second adjusting mechanism comprises a fourth driving mechanism which is in transmission connection with the fourth track piece, so that the second adjusting mechanism moves back and forth on the fourth track piece in the second preset direction under the control of the fourth driving mechanism.

7. The electrical cable installation and operational environment simulation test apparatus of claim 1 wherein, The second adjusting mechanism comprises a second plate body mechanism extending in the vertical direction and the second preset direction. The second plate body mechanism has a second track groove thereon. The second track groove comprises first, second, …, and Nth second track grooves which are sequentially connected. The Mth second track groove and the M-1th second track groove are in a vertical state, where M is less than or equal to N. The second track groove gradually extends from the middle of the plate body mechanism to the periphery in a back-shaped line trend through the first, second, …, and Nth second track grooves which are sequentially connected. The first, second, …, and Nth second track grooves extend in the vertical direction or in the second preset direction. The second fixing piece is located in the second track groove and can move in the second track groove, so that the position of the second fixing piece is adjusted in the vertical direction and the second preset direction. The second track groove is provided with a second transmission chain which is wound around the second track groove and is in a closed state. The second fixing piece is fixed on the second transmission chain. The second adjusting mechanism further comprises a sixth driving mechanism which can drive the second transmission chain to rotate.

8. A cable testing method employing a simulation test apparatus of the cable installation and operation environment as in claim 1, characterized by, The method comprises the following steps: According to the actual laying condition of the cable, the laying cable length is determined, and the spatial positions of the two ends of the laying cable are determined. The two sides of the cable are respectively mounted on the first fixing piece and the second fixing piece. The length of the cable between the contact position of the cable and the first fixing piece and the contact position of the cable and the second fixing piece is equal to the laying cable length. Controlling the third track mechanism and the fourth track mechanism to move on the first track piece and the second track piece, and controlling the first fixed piece and the second fixed piece to adjust in the vertical direction and the second preset direction, or controlling the first adjusting mechanism to move on the third track mechanism, or controlling the second adjusting mechanism to move on the fourth track mechanism, until the spatial positions of the cable ends are the same as the actual laying situation, so that the bending radius of the cable is consistent with the actual laying bending radius; Test the cable stress wrinkle situation in the maintenance operation cycle.

9. A cable testing method employing a simulation test apparatus of the cable installation and operation environment as in claim 1, characterized by, Comprise: According to the actual laying situation of the cable, determine the laying cable length, and determine the spatial positions of the laying cable ends; Install the two sides of the cable on the first fixed piece and the second fixed piece respectively, and the length of the cable between the contact position of the cable and the first fixed piece and the contact position of the cable and the second fixed piece is equal to the laying cable length; Controlling the third track mechanism and the fourth track mechanism to move on the first track piece and the second track piece, and controlling the first fixed piece and the second fixed piece to adjust in the vertical direction and the second preset direction, or controlling the first adjusting mechanism to move on the third track mechanism, or controlling the second adjusting mechanism to move on the fourth track mechanism, until the spatial positions of the cable ends are the same as the actual laying situation, so that the bending radius of the cable is consistent with the actual laying bending radius; After the bending radius of the cable is consistent with the actual laying bending radius, controlling the first adjusting mechanism to move back and forth on the third track mechanism or controlling the second adjusting mechanism to move back and forth on the fourth track mechanism, and controlling the third track mechanism and / or the fourth track mechanism to move back and forth on the first track piece and the second track piece, so as to simulate the long-term twist of the cable on the rail transit vehicle, and then test the cracking situation of the insulating layer or the sheath layer of the cable and / or the conductor monofilament fracture situation of the cable.

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