Cable laying mechanism

Abstract

The invention discloses a cable laying mechanism, and relates to the technical field of cable laying, the cable laying mechanism comprises a U-shaped mobile chassis, the mobile chassis is provided with two laying units arranged in a mirror image manner, and each laying unit comprises a base slidably connected to the mobile chassis along a first linear direction; the movable hinged support is connected to the base in a sliding mode in the second linear direction, and the second linear direction and the first linear direction are horizontal directions perpendicular to each other; the bottom end of the first supporting rod is rotationally connected to the base; the bottom end of the second supporting rod is rotationally connected to the movable hinged support, the top end of the second supporting rod is rotationally connected with the top end of the first supporting rod through a supporting shaft, and the axial direction of the supporting shaft is arranged in the first linear direction; during use, the driving assembly drives the movable hinged supports of the two unfolding units to move in the first linear direction so that the two supporting shafts can be inserted into the center of the cable reel, and then the movable hinged supports of the two unfolding units move in the second linear direction so that the two supporting shafts can lift the cable reel.

Description

Technical Field

[0001] The invention relates to the technical field of cable deployment, and in particular to a cable deployment mechanism. Background Art

[0002] The cable deployment mechanism is a device or device combination used to release the cable from the storage state (usually wound on the cable drum) in an orderly manner for cable laying. It plays a key role in the cable laying project, which can effectively improve the efficiency and quality of cable laying and reduce the intensity and potential risks of manual operation.

[0003] For example, the patent with announcement number CN216037957U discloses an assembled heavy-duty pay-off rack for long-length cables with a braking device, including a pay-off rack body, a support frame, a rotating shaft, a reinforcement frame, a hydraulic lifting system, a positioning mechanism and a braking device. Two sets of support frames are respectively arranged at the center positions on both sides of the pay-off rack, and reinforcement frames are installed on both sides of the support frame. Both sides of the pay-off rack body are movably supported on the support frame through the rotating shaft. The hydraulic lifting system is used to support and adjust the rotating shaft. The hydraulic lifting system includes a vertical sliding plate, a vertical guide plate and a hydraulic lifting device. A sliding groove is provided in the middle of the support frame, and the hydraulic lifting device is installed in the sliding groove. A U-shaped groove is provided at the upper end of the vertical sliding plate, and the U-shaped groove is used to install the rotating shaft. The vertical guide plate is movably inserted in the sliding groove, and the upper end of the vertical guide plate is fixedly connected to the vertical sliding plate. The hydraulic lifting device supports and hydraulically lifts the vertical guide plate.

[0004] The technology disclosed in the above patent realizes the support and lifting of the cable reel, and the cable reel can rotate to retract and release the cable, but there are also shortcomings in use. The process of supporting the cable reel is not convenient enough, because the commonly used cable reels basically only have a central axis hole but no central axis. When supporting the cable reel, the above patent requires the operator to first pass the long rotating shaft through the central axis hole of the cable reel, and then support the cable reel by supporting the rotating shaft. Therefore, the convenience of operation needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to provide a cable deployment mechanism to solve the problem of low operational convenience in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cable deployment mechanism, comprising a U-shaped mobile chassis, on which two deployment units arranged in a mirror image are arranged, each deployment unit comprising: a base, which is slidably connected to the mobile chassis along a first straight line direction; a movable hinge support, which is slidably connected to the base along a second straight line direction, and the second straight line direction is a horizontal direction perpendicular to the first straight line direction; a first support rod, the bottom end of which is rotatably connected to the base; a second support rod, the bottom end of which is rotatably connected to the movable hinge support, and the top end of the second support rod is rotatably connected to the top end of the first support rod through a support shaft, and the axial direction of the support shaft is arranged along the first straight line direction; when in use, the movable hinge supports of the two deployment units are driven by the driving assembly to first move along the first straight line direction so that the two support shafts are inserted into the center of the cable drum, and then move along the second straight line direction so that the two support shafts lift the cable drum.

[0007] Furthermore, the middle part of the support shaft of each unfolding unit is fixedly connected to a limit plate, the inner end is fixedly connected to an end cap, the limit plate is slidably connected to a sliding pin parallel to the support shaft, the sliding pin is fixedly connected to a limit ring located on the outer side of the limit plate, and an elastic part is provided on the sliding pin, which abuts the limit ring against the limit plate when the elastic part releases its elastic force.

[0008] Furthermore, the elastic member includes a compression spring movably mounted on the sliding pin, the outer end of the support shaft is fixedly connected to a support rod, the support rod is slidably connected to the sliding pin, one end of the compression spring abuts against the limiting ring, and the other end abuts against the support rod.

[0009] Furthermore, the driving assembly includes a first power element and two transmission units, the two transmission units correspond one-to-one to the two deployment units, each transmission unit includes a "Z"-shaped guide groove opened on the mobile chassis, a sliding column arranged at the bottom of the corresponding movable hinge support, and a connecting rod hinged on the extension rod of the corresponding movable hinge support, and the sliding column is located in the "Z"-shaped guide groove; a moving part is hinged between the connecting rods of the two transmission units, and the first power element is used to drive the moving part to move along the second straight line direction.

[0010] Furthermore, the "Z"-shaped guide groove includes a first guide groove, a second guide groove and a third guide groove connected in sequence, the first guide groove and the third guide groove are arranged along a first straight line direction and distributed on both sides of the second guide groove, and the second guide groove is arranged along a second straight line direction.

[0011] Furthermore, the sliding column is fixedly connected or rotatably connected to the corresponding movable hinge support.

[0012] Furthermore, the first power element includes a first reduction motor fixedly mounted on the mobile chassis and a screw rotatably connected to the mobile chassis. The power output shaft of the first reduction motor drives the screw to rotate through a gear set, and the moving part is threadedly connected to the screw.

[0013] Furthermore, the first power element includes a first electric push rod fixedly mounted on the moving chassis, and a power output end of the first electric push rod is fixedly connected to the moving part.

[0014] Furthermore, the driving assembly includes two driving units, which correspond one to one with the two deployment units. Each driving unit includes a second power element and a third power element. The second power element is used to drive the corresponding base to slide on the mobile chassis, and the third power element is used to drive the corresponding movable hinge support to slide on the base.

[0015] Furthermore, the driving assembly includes a fourth power element and a fifth power element. The fourth power element is used to drive the two movable hinge supports to slide synchronously in the same direction on the corresponding bases, and the fifth power element is used to drive the two bases to slide synchronously in the opposite directions on the walking base plate.

[0016] In the above technical solution, the cable deployment mechanism provided by the present invention, when in use, moves the chassis to the periphery of the cable drum, so that the two deployment units are distributed at both ends of the cable drum, and the support shaft is aligned with the central axis hole of the cable drum, and then the movable hinge supports of the two deployment units are driven by the driving assembly to first move along the first linear direction so that the two support shafts are inserted into the central axis hole of the cable drum to support the cable drum, and then move along the second linear direction so that the two support shafts are raised to lift the cable drum. Compared with the prior art, the present invention can directly support and lift the cable through the central axis hole of the cable drum by only controlling the movement of the movable hinge support, which simplifies the operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0018] Figure 1 A schematic diagram of the structure of a mobile chassis and two deployment units provided in an embodiment; Figure 2 A schematic diagram of the structure of a deployment unit provided in an embodiment; Figure 3 The overall structural diagram provided for the embodiment; Figure 4 A top view of the overall structure provided for the embodiment; Figure 5 A schematic diagram of the matching structure of the movable hinge support and the mobile chassis provided in the embodiment; Figure 6 A schematic diagram of the split structure of the movable hinge support and the mobile chassis provided in the embodiment; Figure 7 A schematic diagram of the structure of a cable reel clamped in an embodiment; Figure 8A top view of the structure when clamping a cable drum provided by an embodiment; Fig. 9 A schematic diagram of the structure of the cable reel provided in the embodiment; Fig.10 A top view of the structure when the cable reel is deployed provided in the embodiment; Fig.11 A schematic diagram of the structure when transferring a cable reel provided in an embodiment; Fig.12 A top view of the structure when the cable drum is transferred provided in the embodiment; Fig.13 A schematic diagram of a local structure provided for an embodiment; Fig.14 A top view of the structure when another first power element is assembled provided in the embodiment; Fig.15 A top view of a structure provided for another embodiment; Fig.16 A top view of a structure provided for yet another embodiment; Fig.17 A schematic structural diagram of a cable reel provided in an embodiment.

[0019] Description of reference numerals: 100, mobile chassis; 200, display unit; 201, base; 202, fixed hinge support; 203, movable hinge support; 204, first support rod; 205, second support rod; 206, support shaft; 207, limit plate; 208, end cap; 209, slide pin; 210, limit ring; 211, support rod; 213, compression spring; 300, drive assembly; 301, "Z" shaped guide groove; 3011, first guide groove; 3012, second guide groove; 3013, third guide groove; 302, sliding column; 303, extension rod; 304, connecting rod; 305, moving part; 306, first electric push rod; 307, first reduction motor; 308, screw rod; 309, second electric push rod; 310, third electric push rod; 311, second reduction motor; 312, double-thread screw rod; 313, first threaded sleeve; 314, second threaded sleeve; 315, hollow rod; 316, fourth electric push rod; 317, connecting rod; 400, cable drum; 401, central axis hole; 402, spokes. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1-Figure 17The cable deployment mechanism provided by the embodiment of the present invention is used to deploy the cable wound on the cable drum 400, and can also be used to transfer the cable drum 400, which includes a U-shaped mobile chassis 100, which is supported and moved by two rows of wheels, and two mirror-arranged deployment units 200 are arranged on the mobile chassis 100. The U-shaped mobile chassis 100 itself has a symmetry plane, which is the symmetry plane of the two mirror-arranged deployment units 200. The two deployment units 200 have the same structure, such as Figure 1-Figure 2 Each display unit 200 includes a base 201, a fixed hinge support 202, a movable hinge support 203, a first support rod 204, a second support rod 205 and a support shaft 206. The base 201 is slidably connected to the mobile chassis 100 along a first linear direction. A sliding structure is provided between the base 201 and the mobile chassis 100, such as the cooperation of a slide groove and a slider. The fixed hinge support 202 is fixedly connected to one end of the base 201. The bottom end of the first support rod 204 is rotatably connected to the base 201 through the fixed hinge support 202. The movable hinge support 203 is slidably connected to the vicinity of the other end of the base 201 along a second linear direction. A sliding structure is also provided between the movable hinge support 203 and the base 201. The second linear direction is a horizontal direction perpendicular to the first linear direction. The first linear direction is the direction in which the two display units 200 are closed or separated from each other. Figure 4 In the figure, the first straight line direction is the F1 direction of the up-down orientation, and the second straight line direction is the F2 direction of the left-right orientation. The bottom end of the second support rod 205 is rotatably connected to the movable hinge support 203, the axial direction of the fixed hinge support 202 and the axial direction of the movable hinge support 203 are both arranged along the first straight line direction, the first support rod 204 and the second support rod 205 are both arranged obliquely, the top end of the first support rod 204 and the top end of the second support rod 205 are both rotatably connected to the support shaft 206, and the axial direction of the support shaft 206 is also arranged along the first straight line direction. When the mobile chassis 100 drives to the periphery of the cable drum 400, the two display units 200 are distributed at both ends of the cable drum 400, and the support shaft 206 is aligned with the central axis hole 401 of the cable drum 400.

[0022] See also Fig.13A limiting disk 207 is fixedly connected to the middle of the support shaft 206, and the diameter of the limiting disk 207 is larger than the aperture of the central axis hole 401 of the cable reel 400. An end cap 208 is fixedly connected to the inner end of the support shaft 206 (the end facing the cable reel 400), and the end cap 208 is coaxial with the support shaft 206. The diameter of the end cap 208 is larger than the diameter of the support shaft 206, but smaller than the aperture of the central axis hole 401 of the cable reel 400, and the end of the end cap 208 facing the cable reel 400 is chamfered. A through hole is provided near the edge of the limit plate 207, and the limit plate 207 is slidably connected to a sliding pin 209 parallel to the support shaft 206 through the through hole. The diameter of the sliding pin 209 matches the aperture of the through hole. A limiting ring 210 is fixedly connected to the sliding pin 209. The limiting ring 210 is located on the outer side of the limit plate 207 (the side away from the end cap 208). The diameter of the limiting ring 210 is larger than the aperture of the through hole, thereby limiting the sliding stroke of the sliding pin 209 on the limit plate 207. A support rod 211 is fixedly connected to the outer end of the support shaft 206, and the support rod 211 is slidably connected to the sliding pin 209. A compression spring 213 is movably sleeved on the sliding pin 209, and one end of the compression spring 213 abuts against the limiting ring 210, and the other end abuts against the support rod 211. It should be noted that the compression spring 213 may also be replaced by other elastic parts, such as a tension spring, an air spring, etc., and it is required that the elastic part can abut the limit ring 210 against the limit plate 207 when the elastic force is released.

[0023] A driving assembly 300 is also provided, and the driving assembly 300 is required to drive the movable hinge supports 203 of the two unfolding units 200 to move in the first linear direction and the second linear direction respectively.

[0024] When in use, the driving component 300 first causes the movable hinge supports 203 of the two display units 200 to move closer to each other along the first straight line direction at the same time, specifically, the movable hinge supports 203 and the corresponding bases 201 move together on the mobile chassis 100, so that the two support shafts 206 are inserted into the central axis hole 401 of the cable drum 400 to support the cable drum 400; then the two movable hinge supports 203 are driven to move along the second straight line direction at the same time, so that the angle between the first support rod 204 and the second support rod 205 is reduced, and the movable hinge supports 203 cooperate with the first support rod 204 and the second support rod 205 to make the The corresponding support shaft 206 is raised, so that the two support shafts 206 jointly lift the cable drum 400 off the ground. After being raised, the cable drum 400 can be rotated to unfold the cable. During this period, the sliding pin 209 will not contact the spokes 402 of the cable drum 400. Even if the cable drum 400 is axially offset during the process of rotating to unfold the cable, the end caps 208 on the two support shafts 206 will limit and block the inner end edge of the central axis hole 401 of the cable drum 400, thereby preventing the cable drum 400 from having a large axial offset, so as to prevent the spokes 402 of the cable drum 400 from contacting the sliding pin 209.

[0025] When the cable drum 400 needs to be transferred later, the cable drum 400 must be in an off-the-ground state to be transferred. In order to ensure that the off-the-ground cable drum 400 does not rotate uncontrollably during the transfer process, it is necessary to drive the two movable hinge supports 203 to slide closer in the first straight line direction through the driving assembly 300 until the two limit plates 207 abut against the two ends of the center of the cable drum 400, so that the sliding pin 209 is inserted into the gap between the spokes 402 of the cable drum 400, thereby preventing the cable drum 400 from rotating and improving the stability during the transfer process. If the sliding pin 209 fails to be smoothly inserted into the gap between the spokes 402, but just touches the spokes 402, the sliding pin 209 will slide relative to the limit plate 207, and the compression spring 213 will be further compressed and deformed to store energy. This situation is not a problem. Once the cable drum 400 starts to rotate during the subsequent transfer process, the spokes 402 will be offset from the sliding pin 209 at the beginning of the rotation, and the elastic force of the compression spring 213 will be quickly released to insert the sliding pin 209 into the gap between the spokes 402, thereby immediately preventing the cable drum 400 from rotating. When the cable drum 400 is transferred to the destination and the cable needs to be laid out, the two movable hinge supports 203 can be driven by the driving assembly 300 to slide apart a short distance in the first straight line direction to allow the sliding pin 209 to withdraw from the gap between the spokes 402.

[0026] There are multiple embodiments for the specific configuration of the drive assembly 300. As one of the embodiments, refer to Figure 3-Figure 12 The driving assembly 300 includes a first power element and two transmission units. The two transmission units correspond to the two deployment units 200 one by one, that is, the first power element can drive the two deployment units 200 through the two transmission units respectively, and the results of the two transmission units are consistent. Each transmission unit includes a "Z"-shaped guide groove 301, a sliding column 302, an extension rod 303 and a connecting rod 304. The "Z"-shaped guide groove 301 is opened on the mobile chassis 100. The "Z"-shaped guide groove 301 includes a first guide groove 3011, a second guide groove 3012 and a third guide groove 3013 that are connected in sequence. The first guide groove 3011 and the third guide groove 3013 are arranged along the first straight line direction and distributed on both sides of the second guide groove 3012. The second guide groove 3012 is arranged along the second straight line direction; the sliding column 302 is fixedly connected or rotatably connected to the bottom of the corresponding movable hinge support 203, and the sliding column 302 is located in the "Z"-shaped guide groove 301, such as Figure 5-Figure 6 One of the display units 200 is shown (the display unit 200 is in Figure 4The "Z"-shaped guide groove 301 of the upper display unit 200 is embodied in the figure. One end of the extension rod 303 is fixedly connected to the movable hinge support 203, and the other end is hinged to one end of the connecting rod 304. The end of the connecting rod 304 away from the extension rod 303 is hinged to a moving part 305. The connecting rods 304 of the two transmission units are both hinged on the same moving part 305. Fig.14 The first power element adopts a first electric push rod 306, and the power output end of the first electric push rod 306 is fixedly connected to the moving part 305, which can drive the moving part 305 to move along the second straight line direction. The moving part 305 then transmits the drive to the two movable hinge supports 203 through two connecting rods 304 and two extension rods 303.

[0027] See also Figure 3-Figure 4 After the movable chassis 100 is in place, the sliding column 302 moves the end of the first guide groove 3011 away from the second guide groove 3012; after the first power element is activated, the moving part 305 will first move along the second straight line direction for the first stroke, see Figure 7-Figure 8 In the first stroke, since the slide column 302 can only move in the first straight line direction in the first guide groove 3011, the moving part 305 pulls the two sliding hinge supports along the corresponding first guide groove 3011 through the two connecting rods 304 to move closer, and the two movable hinge supports 203 also drive the corresponding base 201 to move synchronously, so that the two support shafts 206 are inserted into the central axis hole 401 of the cable drum 400, until the slide column 302 moves to the intersection of the first guide groove 3011 and the second guide groove 3012; then the moving part 305 will continue to move in the second straight line direction for the second stroke, see Figure 9-10 In the second stroke, since the sliding column 302 can only move in the second straight line direction in the second guide groove 3012, the moving part 305 pushes the two sliding hinge supports to move along the corresponding second guide groove 3012 through the two connecting rods 304, and the movable hinge support 203 slides on the corresponding base 201, and the base 201 and the movable chassis 100 remain relatively fixed. The movable hinge support 203 reduces the angle between the second support rod 205 and the first support rod 204, thereby increasing the height of the two support shafts 206, and lifting the cable drum 400 off the ground until the sliding column 302 moves to the intersection of the second guide groove 3012 and the third guide groove 3013; thereafter, the moving part 305 can continue to move along the second straight line direction for the third stroke, see Figure 11-Figure 12In the third stroke, since the sliding column 302 can only move in the first straight line direction in the third guide groove 3013, the moving part 305 pulls the two sliding hinge supports along the corresponding third guide groove 3013 through the two connecting rods 304 to move closer, and the two movable hinge supports 203 also drive the corresponding base 201 to move synchronously, so that the sliding pins 209 on the two support shafts 206 are inserted into the gaps between the spokes 402 of the cable drum 400, thereby preventing the cable drum 400 off the ground from unnecessary rotation. In the above technical solution, the first stroke, the second stroke and the third stroke of the sliding part 305 moving in sequence are all moving in the second straight line direction towards the moving chassis 100.

[0028] See also Figure 3-Figure 4 The first power element can also adopt a combined structure of a first reduction motor 307 and a screw 308 to replace the first electric push rod 306. The first reduction motor 307 is fixedly installed on the mobile chassis 100, and the screw 308 is rotatably connected to the mobile chassis 100. The axial direction of the screw 308 is consistent with the second straight line direction. A threaded hole is provided on the moving part 305, and the moving part 305 is threadedly connected to the screw 308 through the threaded hole. The power output shaft of the first reduction motor 307 drives the screw 308 to rotate through a gear set. The screw 308 and the moving part 305 are threadedly matched to enable the moving part 305 to move axially along the screw 308. The gear set includes two meshing gears, one of which is coaxially fixedly connected to the power output shaft of the first reduction motor 307, and the other is coaxially fixedly connected to the screw 308.

[0029] It can be seen that in this embodiment, all functions can be realized by controlling the start and stop of the first electric push rod 306 or the first reduction motor 307. The operation is relatively simple and convenient, the equipment manufacturing cost is significantly lower, and the failure rate is low, and the equipment stability is good.

[0030] In another embodiment, see Fig.15 The driving assembly 300 includes two driving units, and the two driving units correspond to the two unfolding units 200 one by one. Each driving unit includes a second power element and a third power element. The second power element is used to drive the corresponding base 201 to slide on the mobile chassis 100, and the third power element is used to drive the corresponding movable hinge support 203 to slide on the base 201. The second power element and the third power element are both linear driving elements. In this embodiment, the second power element adopts a second electric push rod 309, the seat of the second electric push rod 309 is fixedly mounted on the mobile chassis 100, and its push rod is fixedly mounted on the base 201; the third power element adopts a third electric push rod 310, the seat of the third electric push rod 310 is fixedly mounted on the base 201, and its push rod is fixedly mounted on the movable hinge support 203. In addition, the two second electric push rods 309 are controlled in coordination, and the two third electric push rods 310 are also controlled in coordination.

[0031] In another embodiment, see Fig.16 The driving assembly 300 includes a fourth power element and a fifth power element. The fourth power element is used to drive the two movable hinge supports 203 to slide synchronously in the same direction on the corresponding base 201, and the fifth power element is used to drive the two bases 201 to slide synchronously in the opposite direction on the walking base plate. In this embodiment, the four power elements adopt a fourth electric push rod 316. The base of the fourth electric push rod 316 is fixedly mounted on the mobile chassis 100, and its push rod is fixedly mounted on the U-shaped connecting rod 317. The two ends of the two rods are fixedly connected to the two movable hinge supports 203 in a one-to-one correspondence; the fifth power element adopts a second reduction motor 311. The second reduction motor 311 is fixedly mounted on the mobile chassis 100, and one of the bases 201 is fixedly connected to the first threaded sleeve 313 through a hollow rod 315, and the other base 201 is fixedly connected to the second threaded sleeve 313 through another hollow rod 315. The second threaded sleeve 314 also has a double-threaded screw 312 arranged along the first straight line direction. The double-threaded screw 312 has two threaded sections, and the rotation directions of the two threaded sections are opposite. One threaded section is threadedly connected to the first threaded sleeve 313, and the other threaded section is threadedly connected to the second threaded sleeve 314. The power output shaft of the second reduction motor 311 drives the double-threaded screw 312 to rotate through a gear set. The double-threaded screw 312 cooperates with the threads of the first threaded sleeve 313 and the second threaded sleeve 314 to enable the two bases 201 to move synchronously in the opposite direction along the first straight line direction.

[0032] The first electric push rod 306 , the second electric push rod 309 , the third electric push rod 310 and the fourth electric push rod 316 in the present invention are all linear drive elements and can be replaced by other linear drive elements, such as hydraulic cylinders, pneumatic cylinders, linear motors, etc.

[0033] The above describes some exemplary embodiments of the present invention, which should not be understood as limiting the scope of protection of the claims of the present invention. For those skilled in the art, the described embodiments can be modified in other different ways without departing from the spirit and scope of the present invention.

Claims

1. A cable deployment mechanism, characterized in that: The mobile chassis comprises a U-shaped mobile chassis, on which two mirror-arranged display units are arranged, each display unit comprising: A base, which is slidably connected to the mobile chassis along a first linear direction; A movable hinge support, which is slidably connected to the base along a second linear direction, and the second linear direction and the first linear direction are horizontal directions that are perpendicular to each other; A first support rod, the bottom end of which is rotatably connected to the base; A second support rod, the bottom end of which is rotatably connected to the movable hinge support, and the top end of which is rotatably connected to the top end of the first support rod via a support shaft, and the axial direction of the support shaft is arranged along the first straight line direction; When in use, the driving assembly drives the movable hinge supports of the two unfolding units to move first along a first linear direction so that the two support shafts are inserted into the center of the cable drum, and then move along a second linear direction so that the two support shafts lift the cable drum.

2. A cable deployment mechanism according to claim 1, characterized in that: The middle part of the support shaft of each unfolding unit is fixedly connected to a limit plate, the inner end is fixedly connected to an end cap, a sliding pin parallel to the support shaft is slidably connected to the limit plate, a limiting ring located outside the limit plate is fixedly connected to the sliding pin, an elastic part is arranged on the sliding pin, and when the elastic part releases the elastic force, the limiting ring abuts against the limit plate.

3. A cable deployment mechanism according to claim 2, characterized in that: The elastic member comprises a compression spring movably sleeved on the sliding pin, the outer end of the support shaft is fixedly connected with a support rod, the support rod is slidably connected with the sliding pin, one end of the compression spring abuts against the limiting ring, and the other end abuts against the support rod.

4. A cable deployment mechanism according to claim 2, characterized in that: The driving assembly includes a first power element and two transmission units. The two transmission units correspond to the two deployment units one by one. Each transmission unit includes a "Z"-shaped guide groove opened on the mobile chassis, a sliding column arranged at the bottom of the corresponding movable hinge support, and a connecting rod hinged on the extension rod of the corresponding movable hinge support. The sliding column is located in the "Z"-shaped guide groove; a moving part is hinged between the connecting rods of the two transmission units, and the first power element is used to drive the moving part to move along the second straight line direction.

5. A cable deployment mechanism according to claim 4, characterized in that: The "Z"-shaped guide groove includes a first guide groove, a second guide groove and a third guide groove connected in sequence. The first guide groove and the third guide groove are arranged along a first straight line direction and distributed on both sides of the second guide groove. The second guide groove is arranged along a second straight line direction.

6. A cable deployment mechanism according to claim 4, characterized in that: The sliding column is fixedly connected or rotatably connected to the corresponding movable hinge support.

7. A cable deployment mechanism according to claim 4, characterized in that: The first power element includes a first reduction motor fixedly mounted on the mobile chassis and a screw rotatably connected to the mobile chassis. The power output shaft of the first reduction motor drives the screw to rotate through a gear set, and the moving part is threadedly connected to the screw.

8. A cable deployment mechanism according to claim 4, characterized in that: The first power element comprises a first electric push rod fixedly mounted on the moving chassis, and a power output end of the first electric push rod is fixedly connected to the moving part.

9. A cable deployment mechanism according to claim 1 or 2, characterized in that: The driving assembly includes two driving units, which correspond to the two deployment units one by one. Each driving unit includes a second power element and a third power element. The second power element is used to drive the corresponding base to slide on the mobile chassis, and the third power element is used to drive the corresponding movable hinge support to slide on the base.

10. A cable deployment mechanism according to claim 1 or 2, characterized in that: The driving assembly includes a fourth power element and a fifth power element. The fourth power element is used to drive the two movable hinge supports to slide synchronously in the same direction on the corresponding bases, and the fifth power element is used to drive the two bases to slide synchronously in the opposite directions on the walking base plate.

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