Cable laying trolley adaptable to various confined spaces

By combining guidance and control devices, the adaptability of cable laying equipment in confined spaces has been solved, enabling automated cable laying in different environments and improving the adaptability and stability of the equipment.

CN122136731APending Publication Date: 2026-06-02SHANGHAI INSTALLATION ENGINEERING GROUP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INSTALLATION ENGINEERING GROUP CO LTD
Filing Date
2026-03-10
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing cable laying equipment is not suitable for confined spaces, is inconvenient to operate, and cannot automatically lay cables in special environments.

Method used

A cable laying trolley comprising a laying device, a guiding device, a geared motor, a first servo motor, and a control device was designed. Through the combined use of the guiding device and the control device, automated traction and position control of the cable are achieved, adapting to the laying needs of different confined spaces.

Benefits of technology

It improves the adaptability and operational stability of the cable laying trolley in confined spaces, and realizes automated cable laying in different environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of electrical cable laying equipment, specifically a cable laying trolley adaptable to various confined spaces. The trolley includes a laying device, a guiding device, a geared motor, a first servo motor, and a control device. The lower end of the control device, near the rear, houses the geared motor for guidance. By incorporating the guiding device, this invention enables automatic cable laying in different spatial scenarios. The first servo motor drives the connecting worm gear via the geared motor to rotate. The upper part of the connecting worm gear on the same side is synchronously engaged with a synchronous pulley and a synchronous belt, allowing two sets of connecting worm gears on the same side to rotate synchronously. This, in turn, drives two sets of transmission worm wheels on the same side to engage, enabling quick and convenient adjustment of the support angle of the support rollers. This facilitates the equipment's adaptability to cable laying operations in various confined spaces, improving its overall performance.
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Description

Technical Field

[0001] This invention relates to the field of electrical cable laying equipment technology, specifically to a cable laying trolley that can adapt to different confined spaces. Background Technology

[0002] With the rapid development of science and technology, electricity plays an increasingly important role in life. As a wire that carries and transmits electrical energy and information and realizes electromagnetic energy conversion, cables have a wide range of uses. Cable laying is mostly carried out in special environments such as narrow spaces, humidity, high temperature, low temperature, and exposure to the sun. Therefore, cable laying has always been a difficult and arduous task.

[0003] For example, the invention patent disclosed in patent number CN114188889A discloses a cable laying device, belonging to the field of power engineering equipment. In this invention, a cable laying bracket is horizontally fixed on the upper side of a cable laying base. A laying positioning mechanism is provided on the lower part of the cable laying bracket along the side of the cable conveying guide roller. The cable conveying guide roller is horizontally rotatably connected to one side above the cable laying bracket. A reciprocating translational guide plate is slidably disposed horizontally on the cable pulling guide rod. An upper pulling pressure plate is horizontally disposed on the upper side of a lower pulling support plate. A translational pushing wedge plate is horizontally fixed on the upper pulling pressure plate along the side of the cable clamping mechanism. A cable clamping pressure plate is horizontally disposed on the upper side of the cable laying guide roller. A supporting lifting wedge plate, adapted to the translational pushing wedge plate, is horizontally fixed on the cable clamping pressure plate along the side of the cable pulling mechanism. This invention has a reasonable structural design, stable operation, and can efficiently and smoothly pull and lay cables segment by segment, improving the automation level of cable laying and meeting the needs of use.

[0004] Although the above-mentioned equipment can perform cable laying operations, the cable laying device has the disadvantages of being large in size, inconvenient to operate, unable to adapt to automatic laying in narrow spaces, and unable to work in special spaces. Therefore, it does not meet the current needs. Thus, a cable laying trolley that can adapt to different narrow spaces is needed to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a cable laying trolley that can adapt to different confined spaces, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable laying trolley adaptable to different narrow spaces, including a laying device, a guiding device, a reduction motor, a first servo motor, and a control device; A guide motor is provided on the lower end face of the control device near the rear, and a first servo motor for transmission is fixedly provided on the inner end face of the guide motor. Two sets of guide devices for displacement are symmetrically engaged on the inner end face of the control device, and a laying device for traction is provided at the center of the upper end face of the control device.

[0007] Specifically, the laying device includes a fixed base plate for support. A positioning bracket for support is provided on the upper surface of the fixed base plate near the front end. A positioning groove for limiting positioning is opened on the upper surface of the positioning bracket. Two sets of arc-shaped toothed synchronous pulleys for transmission are rotatably engaged on the inner end face of the positioning groove. The two sets of arc-shaped toothed synchronous pulleys are meshed together by an arc-shaped toothed synchronous belt. A second servo motor is fixedly installed on the upper surface of the positioning bracket, directly opposite the upper surface of one set of arc-shaped toothed synchronous pulleys. A guide screw is fixedly installed at the center of the inner end face of the two sets of arc-shaped toothed synchronous pulleys. A limiting clamp is symmetrically threaded to the inner end face of the positioning bracket through the guide screw. Two sets of limiting brackets are provided on the upper surface of the fixed base plate near the rear end. Two sets of damping locking guide rollers are rotatably engaged inside each of the two sets of limiting brackets.

[0008] Specifically, the guiding device includes a transmission worm gear for transmission. A guide bracket is fixedly provided at the center of the side end face of the transmission worm gear, and a third servo motor is provided near the middle of the inner end face of the guide bracket. A limiting bracket for support is provided on the lower end face of the guide bracket, and a supporting bracket for limiting is fixedly installed on the lower end face of the limiting bracket. A transmission guide shaft is fixedly installed at the center of the lower end face of the third servo motor, and a driving bevel gear is fixedly provided at the center of the lower end face of the transmission guide shaft. A driven bevel gear is rotatably engaged near the middle of the inner end face of the supporting bracket, and a driving bevel gear is rotatably engaged near the side of the lower end face of the limiting bracket. Trapezoidal tooth synchronous pulleys are provided on the side end faces of the supporting roller and the driven bevel gear. The upper and lower sets of trapezoidal tooth synchronous pulleys are meshed and connected by a trapezoidal tooth synchronous belt.

[0009] Specifically, the control device includes a support base plate for support. At each of the four corners of the upper surface of the support base plate are aluminum profile supports for support. A support top plate is fixedly installed on the upper surface of the four sets of aluminum profile supports. Two sets of guide grooves are symmetrically opened on the inner end surfaces of the aluminum profile supports. A snap-fit ​​rotating seat is located on the upper surface of the support base plate opposite the guide groove. A connecting worm gear is located on the inner end surface of the support base plate opposite the four sets of snap-fit ​​rotating seats. A transmission synchronous pulley is fixedly installed at the center of the upper end surface of the connecting worm gear. The two sets of transmission synchronous pulleys on the same side are meshed and connected by a transmission synchronous belt.

[0010] Specifically, the two sets of limiting clamps are slidably engaged with the inner wall of the positioning card seat, and the middle of the two sets of limiting clamps is directly opposite the middle of the two sets of damping locking guide rollers, which facilitates the subsequent rapid and stable traction operation of the cable.

[0011] Specifically, the transmission guide shaft is rotatably engaged with the support bracket, and the lower end face of the driving bevel gear meshes with the driven bevel gear, which can effectively improve the stability of the transmission between the driven bevel gear and the driving bevel gear. At the same time, the meshing connection can effectively improve the rotational torque of the support roller.

[0012] Specifically, the transmission worm gear is rotatably engaged with the upper surface of the support base plate via the snap-fit ​​rotating seat, which can effectively improve the stability of the transmission worm gear's rotation adjustment inside the snap-fit ​​rotating seat.

[0013] Specifically, the width of the guide groove is equal to the thickness of the transmission worm gear. The guide groove can provide a sufficient limiting base for the rotation of the transmission worm gear, thereby preventing the subsequent transmission worm gear from being limited by the outside of the supporting top plate or supporting bottom plate when rotating, thus affecting the stability of the transmission.

[0014] Specifically, the connecting worm gear is meshed with the transmission worm wheel, and neither the support base plate nor the support top plate contacts the guide seat. The meshing connection between the connecting worm gear and the transmission worm wheel can not only adjust the support angle of the support roller displacement, but also provide stable support for the subsequent support rollers.

[0015] Specifically, a protective sleeve for protection is fixedly installed at the center of the front end face of the positioning card holder, and a limiting viewing window is opened at equal intervals on the side end face of the protective sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting a guiding device, enables the first servo motor to drive the connecting worm gear to rotate through a reduction motor during automatic cable laying in various confined spaces. The upper part of the connecting worm gear on the same side is synchronously engaged with a transmission synchronous pulley and a transmission synchronous belt, allowing the two sets of connecting worm gears on the same side to rotate synchronously. This, in turn, drives the two sets of transmission worm wheels on the same side to engage, thereby enabling quick and convenient adjustment of the support angle of the support rollers through the transmission worm wheels. This facilitates the equipment's adaptability to cable laying operations in various confined spaces, improving the equipment's adaptability.

[0017] 2. By setting up a laying device, when guiding different cables to different heights, the second servo motor can synchronously drive two sets of guide screws to rotate through the arc-shaped toothed synchronous belt and the arc-shaped toothed synchronous pulley. The two sets of guide screws can be limited by the threaded sliding of the limit clamp, thereby synchronously driving the limit clamp to move up or down inside the positioning seat, which facilitates real-time control of the cable position and effectively improves the practicality of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a split view of the main body of the invention; Figure 3 This is an exploded view of the laying device of the present invention; Figure 4 This is a schematic diagram of the laying device of the present invention; Figure 5 This is a schematic diagram of the guiding device of the present invention; Figure 6 This is a schematic diagram of the control device of the present invention; Figure 7 This is a side view of the control device of the present invention; Figure 8 This is a schematic diagram of the second embodiment of the main body of the present invention.

[0020] In the diagram: 1-Laying device, 2-Guiding device, 3-Reduction motor, 4-First servo motor, 5-Control device, 6-Protective casing, 7-Limiting viewing window, 11-Fixed base plate, 12-Damping locking guide roller, 13-Limiting bracket, 14-Positioning bracket, 15-Guide screw, 16-Arc-toothed synchronous belt, 17-Second servo motor, 18-Arc-toothed synchronous belt pulley, 19-Limiting clamp, 110-Positioning groove, 21-Third servo motor, 22 - Guide bracket, 23- Transmission worm gear, 24- Limit bracket, 25- Trapezoidal tooth synchronous belt, 26- Trapezoidal tooth synchronous belt pulley, 27- Support roller, 28- Driven bevel gear, 29- Driving bevel gear, 210- Support bracket, 211- Transmission guide shaft, 51- Transmission synchronous belt pulley, 52- Transmission synchronous belt, 53- Support top plate, 54- Aluminum profile support column, 55- Support bottom plate, 56- Snap-fit ​​rotating seat, 57- Guide slide groove, 58- Connecting worm gear. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] The invention will be further described below with reference to the accompanying drawings.

[0024] Please see Figure 1-7 An embodiment of the present invention provides a cable laying trolley that can adapt to different narrow spaces, including a laying device 1, a guiding device 2, a reduction motor 3, a first servo motor 4, and a control device 5; A geared motor 3 for guidance is provided on the lower end face of the control device 5 near the rear, and a first servo motor 4 for transmission is fixedly provided on the inner end face of the geared motor 3. Two sets of guide devices 2 for displacement are symmetrically engaged on the inner end face of the control device 5, and a laying device 1 for traction is provided at the center of the upper end face of the control device 5.

[0025] The laying device 1 includes a fixed base plate 11 for support. A positioning bracket 14 for support is provided on the upper end face of the fixed base plate 11 near the front end. A positioning groove 110 for limiting positioning is formed on the upper end face of the positioning bracket 14. Two sets of arc-shaped toothed synchronous pulleys 18 for transmission are rotatably engaged on the inner end face of the positioning groove 110. The two sets of arc-shaped toothed synchronous pulleys 18 are meshed and connected by an arc-shaped toothed synchronous belt 16. A second servo motor 17 is fixedly installed on the upper end face of one of the sets of arc-tooth synchronous pulleys 18. A guide screw 15 is fixedly installed at the center of the inner end face of the two sets of arc-tooth synchronous pulleys 18. The inner end face of the positioning bracket 14 is symmetrically connected to the limit clamp 19 through the guide screw 15. Two sets of limit clamps 13 are provided on the upper end face of the fixed base plate 11 near the rear. Two sets of damping locking guide rollers 12 are rotatably engaged inside the two sets of limit clamps 13.

[0026] The guiding device 2 includes a transmission worm gear 23 for transmission. A guide bracket 22 is fixedly disposed at the center of the side end face of the transmission worm gear 23, and a third servo motor 21 is disposed near the center of the inner end face of the guide bracket 22. A limiting bracket 24 for support is disposed on the lower end face of the guide bracket 22, and a limiting support bracket 210 for limiting is fixedly installed on the lower end face of the limiting bracket 24. A transmission guide shaft 211 is fixedly installed at the center of the lower end face of the third servo motor 21. A drive bevel gear 29 is fixedly installed at the center of the lower end face of the transmission guide shaft 211. A driven bevel gear 28 is rotatably engaged on the inner end face of the support bracket 210 near the middle. A drive bevel gear 29 is rotatably engaged on the lower end face of the limit bracket 24 near the side. Trapezoidal toothed synchronous pulleys 26 are provided on the side end faces of the support roller 27 and the driven bevel gear 28. The upper and lower sets of trapezoidal toothed synchronous pulleys 26 are meshed and connected by a trapezoidal toothed synchronous belt 25.

[0027] The control device 5 includes a support base plate 55 for support. Aluminum profile support columns 54 are provided at the four corners of the upper end face of the support base plate 55 for support. A support top plate 53 is fixedly installed on the upper end face of the four sets of aluminum profile support columns 54. Two sets of guide grooves 57 are symmetrically opened on the inner end face of the aluminum profile support columns 54. A snap-fit ​​rotating seat 56 is provided on the upper end face of the support base plate 55 opposite to the guide groove 57. A connecting worm 58 is provided on the inner end face of the support base plate 55 opposite to the four sets of snap-fit ​​rotating seats 56. A transmission synchronous belt pulley 51 is fixedly installed at the center of the upper end face of the connecting worm 58. The two sets of transmission synchronous belt pulleys 51 on the same side are meshed and connected by a transmission synchronous belt 52.

[0028] The two sets of limiting clamps 19 are slidably engaged with the inner wall of the positioning card seat 14, and the middle of the two sets of limiting clamps 19 is directly opposite the middle of the two sets of damping locking guide rollers 12, which facilitates the subsequent fast and stable traction operation of the cable.

[0029] The transmission guide shaft 211 is rotatably engaged with the support bracket 210, and the lower end face of the driving bevel gear 29 is meshed with the driven bevel gear 28, which can effectively improve the stability of the transmission between the driven bevel gear 28 and the driving bevel gear 29. At the same time, the meshing connection can effectively improve the rotational torque of the support roller 27.

[0030] The transmission worm gear 23 is rotatably engaged with the upper surface of the support base plate 55 via the snap-fit ​​rotating seat 56, which can effectively improve the stability of the rotation adjustment of the transmission worm gear 23 inside the snap-fit ​​rotating seat 56.

[0031] The width of the guide groove 57 is equal to the thickness of the transmission worm gear 23. The guide groove 57 can provide sufficient limiting basis for the rotation of the transmission worm gear 23, thereby preventing the subsequent transmission worm gear 23 from being limited by the outside of the supporting top plate 53 or the supporting bottom plate 55 when it rotates, thus affecting the stability of the transmission.

[0032] The connecting worm 58 is meshed with the transmission worm wheel 23, and neither the support base plate 55 nor the support top plate 53 contacts the guide seat 22. The meshing connection between the connecting worm 58 and the transmission worm wheel 23 can not only adjust the support angle of the support roller 27 displacement, but also provide stable support for the subsequent support roller 27.

[0033] In this embodiment, before laying the cable, the user can lock the cable to be laid externally through two sets of damping locking guide rollers 12, thereby facilitating subsequent cable traction. If it is necessary to adjust the cable traction height, the user can start the second servo motor 17, which will drive the bottom arc-tooth synchronous pulley 18 to rotate. At the same time, since the two sets of arc-tooth synchronous pulleys 18 are meshed through the arc-tooth synchronous belt 16, the arc-tooth synchronous belt 16 can pass through the two sets of arc-tooth synchronous pulleys 18. The synchronous belt pulley 18 synchronously drives the two sets of guide screws 15 to rotate. When the two sets of guide screws 15 rotate, they can be limited by the threaded sliding of the limit clamp 19, thereby synchronously driving the limit clamp 19 to move up or down inside the positioning bracket 14, completing the rapid adjustment of the cable traction height. When tractioning the cable, the user can start the four sets of third servo motors 21 through the external control device. At this time, the third servo motors 21 can drive the transmission guide shaft 211 at the bottom to rotate. Simultaneously, the transmission guide shaft 211 can synchronously drive the driven bevel gear 28 at the bottom to rotate via the active bevel gear 29. The driven bevel gear 28 can then be connected to the trapezoidal tooth synchronous belt pulley 26 via the trapezoidal tooth synchronous belt 25, thereby driving the support roller 27 at the bottom to rotate. The four sets of third servo motors 21 can synchronously or asynchronously control the speed and torque of the support roller 27, thereby improving the stability of the equipment moving forward in different road sections. If it is necessary to adjust the angle of the support roller 27 to adapt to different traction areas, then... The user can start the first servo motor 4, which in turn drives the connecting worm 58 to rotate via the reduction motor 3. At the same time, the upper part of the connecting worm 58 on the same side can be synchronously engaged with the transmission synchronous pulley 51 and the transmission synchronous belt 52, thereby driving the two sets of connecting worms 58 on the same side to rotate synchronously. The two sets of connecting worms 58 on the same side can drive the two sets of transmission worm wheels 23 on the same side to engage, thereby allowing the transmission worm wheels 23 to stably control the displacement and support angle of the support roller 27.

[0034] Example 2 Based on Example 1, such as Figure 8 As shown, a protective sleeve 6 for protection is fixedly installed at the center of the front end face of the positioning bracket 14, and a limiting viewing window 7 is opened at equal intervals on the side end face of the protective sleeve 6.

[0035] In this embodiment, the protective casing 6 can provide all-round protection for the exterior of the laying device 1, thereby improving the overall protection of the equipment. At the same time, the limiting viewing window 7 can facilitate quick observation and maintenance of various components inside the laying device 1.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable laying trolley adaptable to various confined spaces, characterized in that: It includes a laying device (1), a guiding device (2), a geared motor (3), a first servo motor (4), and a control device (5); The lower end face of the control device (5) is provided with a geared motor (3) for guidance near the rear, and a first servo motor (4) for transmission is fixedly provided on the inner end face of the geared motor (3). Two sets of guide devices (2) for displacement are symmetrically meshed on the inner end face of the control device (5), and a laying device (1) for traction is provided at the center of the upper end face of the control device (5).

2. The cable laying trolley adaptable to different confined spaces according to claim 1, characterized in that: The laying device (1) includes a fixed base plate (11) for support. A positioning bracket (14) for support is provided on the upper end face of the fixed base plate (11) near the front end. A positioning slot (110) for limiting is provided on the upper end face of the positioning bracket (14). Two sets of arc-shaped toothed synchronous pulleys (18) for transmission are rotatably engaged on the inner end face of the positioning slot (110). The two sets of arc-shaped toothed synchronous pulleys (18) are meshed and connected by an arc-shaped toothed synchronous belt (16). A second servo motor (17) is fixedly installed on the upper end face of one of the sets of arc-tooth synchronous pulleys (18). A guide screw (15) is fixedly installed at the center of the inner end face of the two sets of arc-tooth synchronous pulleys (18). The inner end face of the positioning bracket (14) is symmetrically threaded with a limit clamp (19) through the guide screw (15). Two limit clamps (13) are provided on the upper end face of the fixed base plate (11) near the rear. Two sets of damping locking guide rollers (12) are rotatably engaged inside the two sets of limit clamps (13).

3. The cable laying trolley adaptable to different confined spaces according to claim 2, characterized in that: The guiding device (2) includes a transmission worm gear (23) for transmission. A guide bracket (22) is fixedly provided at the center of the side end face of the transmission worm gear (23), and a third servo motor (21) is provided near the middle of the inner end face of the guide bracket (22). A limiting bracket (24) for support is provided on the lower end face of the guide bracket (22), and a limiting support bracket (210) for limiting is fixedly installed on the lower end face of the limiting bracket (24). A transmission guide shaft (211) is fixedly installed at the center of the lower end face of the third servo motor (21). The drive bevel gear (29) is fixedly installed at the center of the lower end face of the transmission guide shaft (211). The driven bevel gear (28) is rotatably engaged at the inner end face of the support bracket (210) near the middle. The drive bevel gear (29) is rotatably engaged at the lower end face of the limit bracket (24) near the side. The side end faces of the support roller (27) and the driven bevel gear (28) are both provided with trapezoidal tooth synchronous pulleys (26). The upper and lower sets of trapezoidal tooth synchronous pulleys (26) are meshed and connected by a trapezoidal tooth synchronous belt (25).

4. The cable laying trolley adaptable to different confined spaces according to claim 3, characterized in that: The control device (5) includes a support base plate (55) for support. Aluminum profile support columns (54) are provided at the four corners of the upper end face of the support base plate (55) for support. A support top plate (53) is fixedly installed on the upper end face of the four sets of aluminum profile support columns (54). Two sets of guide grooves (57) are symmetrically opened on the inner end face of the aluminum profile support columns (54). A snap-fit ​​rotating seat (56) is provided on the upper end face of the support base plate (55) opposite to the guide groove (57). A connecting worm (58) is provided on the inner end face of the support base plate (55) opposite to the four sets of snap-fit ​​rotating seats (56). A transmission synchronous pulley (51) is fixedly installed at the center of the upper end face of the connecting worm (58). The two sets of transmission synchronous pulleys (51) on the same side are meshed and connected by a transmission synchronous belt (52).

5. The cable laying trolley adaptable to different confined spaces according to claim 4, characterized in that: The two sets of limiting clamps (19) are slidably engaged with the inner wall of the positioning card seat (14), and the middle of the two sets of limiting clamps (19) is directly opposite the middle of the two sets of damping locking guide rollers (12).

6. The cable laying trolley adaptable to different confined spaces according to claim 4, characterized in that: The transmission guide shaft (211) is rotatably engaged with the support bracket (210), and the lower end face of the driving bevel gear (29) is meshed with the driven bevel gear (28).

7. The cable laying trolley adaptable to different confined spaces according to claim 4, characterized in that: The transmission worm gear (23) is rotatably engaged with the upper surface of the support base plate (55) via the snap-fit ​​rotating seat (56).

8. The cable laying trolley adaptable to different confined spaces according to claim 4, characterized in that: The width of the guide groove (57) is equal to the thickness of the transmission worm gear (23).

9. The cable laying trolley adaptable to different confined spaces according to claim 4, characterized in that: The connecting worm (58) is meshed with the transmission worm wheel (23), and neither the supporting base plate (55) nor the supporting top plate (53) contacts the guide seat (22).

10. The cable laying trolley adaptable to different confined spaces according to claim 4, characterized in that: A protective sleeve (6) for protection is fixedly installed at the center of the front end face of the positioning card (14), and a limiting viewing window (7) is opened at equal intervals on the side end face of the protective sleeve (6).