Cable laying traction device suitable for narrow space

Abstract

The invention discloses a cable laying traction device suitable for a narrow space. The invention relates to the technical field of cable laying, and the cable laying device comprises a traction table, the upper part of the traction table close to the two edges is provided with bottom guide members, the two sides of the traction table close to the bottom guide members are provided with side guide members, and the bottom guide members are pressed by the dead weight of a cable, so that the two side guide members clamp and guide the two sides of the cable respectively. According to the cable laying traction device suitable for the narrow and small space, self-clamping guiding of cables of different sizes is achieved through the gravity of the cables, the cable laying traction device is suitable for cable laying operation in the narrow and small space, when the cables are erected on the bottom guiding piece, the gravity of the cables enables the cables to naturally press the bottom guiding roller downwards, and the frame-shaped sliding table moves downwards under the elastic effect of the spring; and then the L-shaped blocks and the connecting rod mechanisms are driven, transverse movement of the side guide rollers is achieved, the two sides of the cable are clamped and guided, and due to the self-locking design, the structure is simplified, and the flexibility and efficiency of operation in a limited space are improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable laying, in particular to a cable laying traction device suitable for a narrow space. Background Art

[0002] Cable laying is becoming increasingly common in various engineering projects, such as those in automation control, electrical equipment, and data centers. The quality of cable laying can directly impact the stable operation and safety of the entire system. To meet the demands of cable laying in diverse environments, the research and development of cable traction devices for confined spaces has become a key technical focus.

[0003] Despite the wide variety of cable-laying traction devices currently available on the market, these devices often exhibit significant limitations when used in confined spaces. Inadequate self-locking and guiding capabilities are a significant issue, making cable misalignment more likely during installation in tight spaces, increasing operational difficulty and risk. Furthermore, complex traction mechanisms can be difficult to operate, reducing efficiency and potentially increasing safety risks due to improper operation.

[0004] How to solve the above technical difficulties has become an urgent problem to be solved. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a cable laying and traction device suitable for a narrow space to solve the problems raised by the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cable laying traction device suitable for use in a narrow space, comprising a traction platform, wherein bottom guides are provided on the upper portion of the traction platform near both edges, and side guides are provided on both sides of the traction platform near the bottom guides, and the bottom guide is pressed down by the deadweight of the cable so that the two side guides clamp and guide the two sides of the cable respectively.

[0007] The bottom guide member includes a frame-shaped slide that slides longitudinally and is inserted into the upper part of the traction platform. The inner top side of the frame-shaped slide is connected to the upper part of the traction platform by a spring. Limit seats are provided on the upper parts of both sides of the frame-shaped slide. A bottom guide roller is rotatably provided between the two limit seats. An L-shaped block is provided on one side of the bottom of the frame-shaped slide, and connecting rods are hinged on both sides of the other end of the L-shaped block.

[0008] The side guide member includes a concave rod, one end of which slides transversely through one side of the traction platform and is hinged to one end of the connecting rod, and the other end of the concave rod is connected to a concave plate through an adjusting member, and a side guide roller is rotatably provided between the two ends of the concave plate.

[0009] Preferably, the elastic force of the spring is smaller than the gravity of the cable. When the cable presses down the bottom guide roller, the elasticity of the spring is used to move the frame slide downward, causing the connecting rod to pull the concave rod to move, allowing the two side guide rollers to clamp and guide both sides of the cable.

[0010] Preferably, the adjusting member includes a cavity arranged inside the concave rod near one end of the concave plate, a bolt rod is rotatably arranged in the cavity, a knob for adjusting the rotation of the bolt rod is rotatably arranged on one side of the concave rod, a movable sleeve is screwed to the outside of the bolt rod through a thread, and the other end of the movable sleeve extends out of the cavity and is connected to the concave plate.

[0011] Preferably, the spring is in a reset state, the connecting rod is in a horizontal state, and the distance between the two side guide rollers is greater than the outer diameter of the cable.

[0012] Preferably, a servo motor is installed in the middle of one side of the traction platform, the output shaft of the servo motor is located in the traction platform and is connected to the traction member, and a limiting groove is provided in the middle of the upper side of the traction platform.

[0013] Preferably, the traction member includes a double-thread screw connected to the output shaft of the servo motor, the outer side of the double-thread screw is screwed with a first movable seat and a second movable seat through a thread, the upper parts of the first movable seat and the second movable seat are both rotatably provided with a gear-type driven wheel, the upper part of the second movable seat is also rotatably provided with a transmission gear adapted to the gear-type driven wheel, the transmission gear is meshed with the gear-type driven wheel, the upper center point of one of the gear-type driven wheels and the upper center point of the transmission gear are both connected to a limiting shaft, the upper end of the limiting shaft extends out of the limiting groove and is connected to a traction roller, the traction member also includes a driving motor connected to the top side of the traction platform, the output shaft of the driving motor is connected to a gear-type driving wheel, and the gear-type driving wheel and the two gear-type driven wheels are connected by a transmission belt.

[0014] Preferably, the thread teeth on both sides of the middle of the double-thread screw are opposite to each other, so that when the double-thread screw rotates counterclockwise, the first movable seat and the second movable seat move closer to each other, and when the first movable seat rotates clockwise, the first movable seat and the second movable seat move away from each other.

[0015] Preferably, the traction member also includes a belt tensioner for adjusting the tension of the transmission belt, the belt tensioner includes an L-shaped rod and a gear sleeve fixedly arranged in the middle of the double-thread screw, the lower end of the L-shaped rod is fixedly connected to the inner bottom side of the traction platform, and the other section of the external transverse sliding sleeve of the L-shaped rod is provided with a limit sleeve, the upper part of the limit sleeve is connected to a rack, the gear sleeve is meshed with the rack, the upper part of one end of the limit sleeve is connected to a fixed shaft, the upper end of the fixed shaft is connected to a base, the upper part of the base is rotatably provided with two tensioning rollers adapted to the thickness of the transmission belt, and the transmission belt passes between the two tensioning rollers.

[0016] The present invention provides a cable laying and pulling device suitable for use in narrow spaces, which has the following advantages compared to the prior art:

[0017] 1. This cable laying traction device, suitable for narrow spaces, utilizes the cable's own gravity to achieve self-clamping and guiding of cables of different sizes, making it suitable for cable laying operations in narrow spaces. When the cable is installed on the bottom guide member, the cable's gravity naturally presses down the bottom guide roller. The elastic action of the spring causes the frame slide to move downward, thereby driving the L-shaped block and connecting rod mechanism to achieve lateral movement of the side guide rollers, clamping and guiding both sides of the cable. This self-locking design not only simplifies the structure, but also improves the flexibility and efficiency of operations in limited spaces, allowing cables to be laid more accurately in narrow spaces.

[0018] 2. This cable laying traction device, suitable for narrow spaces, achieves smooth cable traction through a servo motor driving a double-thread screw and the cooperation of a gear-type driving wheel and a driven wheel. This design enables effective power support for the cable during the laying process, which not only reduces the labor intensity of the staff but also improves the continuity and speed of the laying operation. In addition, this traction mechanism can adapt to cables of different sizes and types, enhancing the applicability and flexibility of the system.

[0019] 3. This cable laying traction device is suitable for narrow spaces. Through the linkage mechanism of the gear sleeve and the limit sleeve, the system can adjust the tension of the transmission belt in real time to prevent it from being too loose or too tight. This dynamic adjustment ensures that the transmission belt always remains in the best working condition during the operation, avoids belt wear and reduced efficiency caused by improper tension, extends the service life of the belt, and also ensures the smooth progress of the entire cable laying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the bottom guide member of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the side guide member of the present invention;

[0023] Figure 4 Schematic diagram of the connection structure between the bottom guide member and the side guide member of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the traction member of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the belt tensioner of the present invention.

[0026] In the figure: 1. traction table; 2. bottom guide; 21. frame slide; 22. spring; 23. limit seat; 24. bottom guide roller; 25. L-shaped block; 26. connecting rod; 3. side guide; 31. concave rod; 32. adjustment member; 321. cavity; 322. bolt rod; 323. movable sleeve; 324. knob; 33. concave plate; 34. side guide roller; 4. servo motor; 5. limit slot; 6. traction member; 61. double Threaded screw; 62. First movable seat; 63. Second movable seat; 64. Gear-type driven wheel; 65. Transmission gear; 66. Limiting shaft; 67. Traction roller; 68. Belt tensioner; 681. L-shaped rod; 682. Gear sleeve; 683. Limiting sleeve; 684. Rack; 685. Fixed shaft; 686. Base; 687. Tensioning roller; 69. Driving motor; 610. Gear-type driving wheel; 611. Transmission belt. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1 In an embodiment of the present invention, a cable laying traction device suitable for use in a narrow space includes a traction platform 1. Bottom guide members 2 are provided on the upper portion of the traction platform 1 near both edges, and side guide members 3 are provided on both sides of the traction platform 1 near the bottom guide member 2. The bottom guide member 2 is pressed down by the dead weight of the cable so that the two side guide members 3 clamp and guide the two sides of the cable respectively.

[0029] See also Figure 2 and Figure 4 In this embodiment of the present invention, the bottom guide member 2 includes a frame-type slide 21 that slides longitudinally and is inserted into the upper part of the traction platform 1. The inner top side of the frame-type slide 21 is connected to the upper part of the traction platform 1 by a spring 22. Limit seats 23 are provided on the upper parts of both sides of the frame-type slide 21. A bottom guide roller 24 is rotatably provided between the two limit seats 23. An L-shaped block 25 is provided on one side of the bottom of the frame-type slide 21, and connecting rods 26 are hinged on both sides of the other end of the L-shaped block 25.

[0030] See also Figure 3 and Figure 4 In this embodiment of the present invention, the side guide member 3 includes a concave rod 31, one end of the concave rod 31 slides transversely through one side of the traction platform 1 and is hinged to one end of the connecting rod 26, and the other end of the concave rod 31 is connected to a concave plate 33 through an adjusting member 32, and a side guide roller 34 is rotatably provided between the two ends of the concave plate 33.

[0031] See also Figure 4 In the embodiment of the present invention, the elastic force of the spring 22 is less than the gravity of the cable. When the cable presses down the bottom guide roller 24, the elasticity of the spring 22 is used to move the frame slide 21 downward, so that the connecting rod 26 pulls the concave rod 31 to move, allowing the two side guide rollers 34 to clamp and guide the two sides of the cable.

[0032] In this embodiment, when in use, the cable is mounted on the bottom guide member 2. Using the gravity of the cable, the cable will press down the bottom guide roller 24. Under the elasticity of the spring 22, the frame slide 21 will move downward, thereby driving the L-shaped block 25 to move downward. The L-shaped block 25 will cause the connecting rod 26 to pull the concave rod 31 to move laterally, so that the two side guide rollers 34 are close to each other. In this way, the two side guide rollers 34 will clamp the two sides of the cable and guide the cable to the side, while the bottom guide roller 24 will guide the bottom of the cable, so that the cable is not easily offset during the laying process.

[0033] For further information, see Figure 4 In the embodiment of the present invention, the adjusting member 32 includes a cavity 321 arranged inside the concave rod 31 at one end close to the concave plate 33, a bolt rod 322 is rotatably arranged in the cavity 321, and a knob 324 for adjusting the rotation of the bolt rod 322 is rotatably arranged on one side of the concave rod 31, and a movable sleeve 323 is screwed to the outside of the bolt rod 322 through a thread, and the other end of the movable sleeve 323 extends out of the cavity 321 and is connected to the concave plate 33.

[0034] In this solution, the side guide member 3 is improved to adapt to the lateral clamping and guiding of cables of different sizes. When in use, the bolt rod 322 is rotated by turning the knob 324, and the bolt rod 322 drives the movable sleeve 323 to move. The movable sleeve 323 will adjust the position of the side guide roller 34. The side guide roller 34 can be adjusted to a suitable position according to the thickness of the cable, so that the bottom and side of cables of different diameters can be guided.

[0035] For further information, see Figure 4 In the embodiment of the present invention, the spring 22 is in the reset state, the connecting rod 26 is in the horizontal state, and the distance between the two side guide rollers 34 is greater than the outer diameter of the cable. After the cable is placed on the bottom guide member 2, the two side guide rollers 34 will approach each other to clamp and guide both sides of the cable.

[0036] See also Figure 1 In the embodiment of the present invention, a servo motor 4 is installed in the middle of one side of the traction platform 1. The output shaft of the servo motor 4 is located inside the traction platform 1 and is connected to a traction member 6. A limiting groove 5 is provided in the middle of the upper side of the traction platform 1.

[0037] See also Figure 1 and Figure 5-Figure 6In the embodiment of the present invention, the traction member 6 includes a double-thread screw 61 connected to the output shaft of the servo motor 4, and the outer side of the double-thread screw 61 is screwed with a first movable seat 62 and a second movable seat 63 by a thread. The upper parts of the first movable seat 62 and the second movable seat 63 are both rotatably provided with a gear-type driven wheel 64, and the upper part of the second movable seat 63 is also rotatably provided with a transmission gear 65 adapted to the gear-type driven wheel 64. The transmission gear 65 is meshed with the gear-type driven wheel 64, and the upper center of one of the gear-type driven wheels 64 and the upper center of the transmission gear 65 are both connected to a limiting shaft 66, the upper end of the limiting shaft 66 extends out of the limiting groove 5 and is connected to a traction roller 67, and the traction member 6 also includes a driving motor 69 connected to the top side of the traction platform 1, and the output shaft of the driving motor 69 is connected to a gear-type driving wheel 610, and the gear-type driving wheel 610 and the two gear-type driven wheels 64 are connected by a transmission belt 611.

[0038] See also Figure 1 and Figure 5-Figure 6 In the embodiment of the present invention, the thread teeth on both sides of the middle of the double-thread screw 61 are opposite to each other, so that when the double-thread screw 61 rotates counterclockwise, the first movable seat 62 and the second movable seat 63 move closer to each other, and when the first movable seat 62 rotates clockwise, the first movable seat 62 and the second movable seat 63 move away from each other.

[0039] In this solution, when in use, the servo motor 4 drives the double-tooth screw 61 to rotate, and the double-tooth screw 61 drives the first movable seat 62 and the second movable seat 63 to move respectively, so that the two are close to each other, allowing the two traction rollers 67 to clamp the two sides of the cable, and then the driving motor 69 drives the gear-type active wheel 610 to rotate, and the gear-type active wheel 610 causes the transmission belt 611 to drive the two gear-type driven wheels 64 to rotate respectively, and one of the gear-type driven wheels 64 will drive the transmission gear 65 meshing with it to rotate, thereby enabling the two traction rollers 67 to rotate, and the directions of rotation of the two traction rollers 67 will be opposite, so that the cable can be pulled to move, which is convenient for personnel to lay the cable.

[0040] See also Figure 1 and Figure 5-Figure 6In the embodiment of the present invention, the traction member 6 also includes a belt tensioner 68 for adjusting the tension of the transmission belt 611. The belt tensioner 68 includes an L-shaped rod 681 and a gear sleeve 682 fixedly arranged in the middle of the double-thread screw 61. The lower end of the L-shaped rod 681 is fixedly connected to the inner bottom side of the traction platform 1, and the other section of the external transverse sliding sleeve of the L-shaped rod 681 is provided with a limiting sleeve 683. The upper part of the limiting sleeve 683 is connected with a rack 684. The gear sleeve 682 is meshed with the rack 684. The upper part of one end of the limiting sleeve 683 is connected with a fixed shaft 685. The upper end of the fixed shaft 685 is connected with a base 686. The upper part of the base 686 is rotatably provided with two tensioning rollers 687 that are adapted to the thickness of the transmission belt 611. The transmission belt 611 passes between the two tensioning rollers 687.

[0041] In this embodiment, a tension adjustment device for the transmission belt 611 is additionally provided. When in use, when the double-thread screw 61 rotates, the double-thread screw 61 will drive the gear sleeve 682 to rotate. Since the gear sleeve 682 is engaged with the rack 684 on the limit sleeve 683, the rotation of the gear sleeve 682 will drive the limit sleeve 683 to slide on the L-shaped rod 681, thereby causing the fixed shaft 685 to drive the base 686 to move, and the two tensioning rollers 687 will tighten or loosen the transmission belt 611. When the double-thread screw 61 rotates counterclockwise, the two second movable seats 63 approach each other. At this time, the transmission belt 611 is in a relaxed state, and when the double-thread screw 61 rotates counterclockwise, it will drive the gear sleeve 682 to rotate counterclockwise, and the gear sleeve 682 will drive the limiting sleeve 683 to move to the right, so that the two tensioning rollers 687 pull one side of the transmission belt 611 to the right, so that the loose transmission belt 611 is tightened. Conversely, when the double-thread screw 61 rotates clockwise, the transmission belt 611 will become too tight, and when the gear sleeve 682 rotates clockwise, it will drive the limiting sleeve 683 to move left, pulling the transmission belt 611 to the left, so that the transmission belt 611 will not be too tight, thereby ensuring the stable operation of the transmission belt 611.

[0042] Working principle: The cable is installed on the bottom guide member 2. The cable will press down the bottom guide roller 24 by the weight of the cable. Under the elasticity of the spring 22, the frame slide 21 will move downward, thereby driving the L-shaped block 25 to move downward. The L-shaped block 25 will make the connecting rod 26 pull the concave rod 31 to move horizontally, so that the two side guide rollers 34 are close to each other. In this way, the two side guide rollers 34 will clamp the two sides of the cable to guide the cable to the side, while the bottom guide roller 24 will guide the bottom of the cable, making it less likely for the cable to deviate during the laying process.

[0043] By turning the knob 324, the bolt rod 322 is rotated, and the bolt rod 322 drives the movable sleeve 323 to move. The movable sleeve 323 adjusts the position of the side guide roller 34. The side guide roller 34 can be adjusted to a suitable position according to the thickness of the cable, so that the bottom and side of the cables with different diameters can be guided.

[0044] After the cable is clamped and guided, the servo motor 4 drives the double-thread screw 61 to rotate, and the double-thread screw 61 drives the first movable seat 62 and the second movable seat 63 to move respectively, so that the two are close to each other, and the two traction rollers 67 clamp the two sides of the cable. Then the driving motor 69 drives the gear-type driving wheel 610 to rotate, and the gear-type driving wheel 610 drives the transmission belt 611 to drive the two gear-type driven wheels 64 to rotate respectively, and one of the gear-type driven wheels 64 will drive the transmission gear 65 meshing with it to rotate, thereby enabling the two traction rollers 67 to rotate. The two traction rollers 67 rotate in opposite directions, thereby traction The movement of the cable is convenient for personnel to lay the cable;

[0045] As the double-thread screw 61 rotates, the double-thread screw 61 drives the gear sleeve 682 to rotate. Since the gear sleeve 682 is meshed with the rack 684 on the limiting sleeve 683, the gear sleeve 682 rotates and drives the limiting sleeve 683 to slide on the L-shaped rod 681, thereby causing the fixed shaft 685 to drive the base 686 to move. The two tensioning rollers 687 will tighten or loosen the transmission belt 611. When the double-thread screw 61 rotates counterclockwise, the two second movable seats 63 approach each other. At this time, the transmission belt 611 is in a relaxed state, and the double-thread screw When 61 rotates counterclockwise, it will drive the gear sleeve 682 to rotate counterclockwise, and the gear sleeve 682 will drive the limiting sleeve 683 to move to the right, so that the two tensioning rollers 687 will pull one side of the transmission belt 611 to the right, so that the loose transmission belt 611 is tightened. Conversely, when the double-thread screw 61 rotates clockwise, the transmission belt 611 will become too tight, and the gear sleeve 682 will drive the limiting sleeve 683 to move left when it rotates clockwise, pulling the transmission belt 611 to the left, so that the transmission belt 611 will not be too tight, thereby ensuring the stable operation of the transmission belt 611.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cable laying traction device suitable for use in a narrow space, comprising a traction platform (1), characterized in that: The upper portion of the traction platform (1) is provided with bottom guide members (2) near both edges, and both sides of the traction platform (1) are provided with side guide members (3) near the bottom guide member (2). The bottom guide member (2) is pressed down by the deadweight of the cable so that the two side guide members (3) respectively clamp and guide the two sides of the cable. The bottom guide member (2) includes a frame-shaped slide (21) that slides longitudinally and is inserted into the upper part of the traction platform (1). The inner top side of the frame-shaped slide (21) is connected to the upper part of the traction platform (1) via a spring (22). The upper parts of both sides of the frame-shaped slide (21) are provided with limit seats (23). A bottom guide roller (24) is rotatably provided between the two limit seats (23). An L-shaped block (25) is provided on one side of the bottom of the frame-shaped slide (21). The other end of the L-shaped block (25) is hinged with a connecting rod (26) on both sides. The side guide member (3) includes a concave rod (31), one end of which slides transversely through one side of the traction platform (1) and is hinged to one end of a connecting rod (26), and the other end of the concave rod (31) is connected to a concave plate (33) through an adjusting member (32), and a side guide roller (34) is rotatably provided between the two ends of the concave plate (33).

2. The cable laying and pulling device suitable for narrow spaces according to claim 1, characterized in that: The elastic force of the spring (22) is smaller than the weight of the cable. When the cable presses down the bottom guide roller (24), the elasticity of the spring (22) is used to move the frame slide (21) downward, so that the connecting rod (26) pulls the concave rod (31) to move, allowing the two side guide rollers (34) to clamp and guide the two sides of the cable.

3. The cable laying and pulling device suitable for use in a narrow space according to claim 1, characterized in that: The adjusting member (32) comprises a cavity (321) arranged inside one end of the concave rod (31) close to the concave plate (33); a bolt rod (322) is rotatably arranged in the cavity (321); a knob (324) for adjusting the rotation of the bolt rod (322) is rotatably arranged on one side of the concave rod (31); a movable sleeve (323) is screwed onto the outside of the bolt rod (322) through a thread; the other end of the movable sleeve (323) extends out of the cavity (321) and is connected to the concave plate (33).

4. The cable laying and pulling device suitable for use in a narrow space according to claim 1, characterized in that: The spring (22) is in a reset state, the connecting rod (26) is in a horizontal state, and the distance between the two side guide rollers (34) is greater than the outer diameter of the cable.

5. The cable laying and pulling device suitable for narrow spaces according to claim 1, characterized in that: A servo motor (4) is installed in the middle of one side of the traction platform (1); an output shaft of the servo motor (4) is located inside the traction platform (1) and is connected to a traction member (6); and a limiting slot (5) is provided in the middle of the upper side of the traction platform (1).

6. The cable laying and pulling device suitable for use in a narrow space according to claim 5, characterized in that: The traction member (6) includes a double-thread screw (61) connected to the output shaft of the servo motor (4); the outer portion of the double-thread screw (61) is screwed with a first movable seat (62) and a second movable seat (63) through a thread; the upper portion of the first movable seat (62) and the second movable seat (63) are both rotatably provided with a gear-type driven wheel (64); the upper portion of the second movable seat (63) is also rotatably provided with a transmission gear (65) adapted to the gear-type driven wheel (64); the transmission gear (65) is meshed with the gear-type driven wheel (64), wherein one The upper center of each gear-type driven wheel (64) and the upper center of each transmission gear (65) are connected to a limiting shaft (66); the upper end of the limiting shaft (66) extends out of the limiting groove (5) and is connected to a traction roller (67); the traction member (6) further comprises a driving motor (69) connected to the top side of the traction platform (1); the output shaft of the driving motor (69) is connected to a gear-type driving wheel (610); and the gear-type driving wheel (610) and the two gear-type driven wheels (64) are connected to each other through a transmission belt (611).

7. The cable laying and pulling device suitable for use in a narrow space according to claim 6, characterized in that: The thread teeth on both sides of the middle of the double-thread screw (61) are opposite to each other, so that when the double-thread screw (61) rotates counterclockwise, the first movable seat (62) and the second movable seat (63) move closer to each other, and when the first movable seat (62) rotates clockwise, the first movable seat (62) and the second movable seat (63) move away from each other.

8. The cable laying and pulling device suitable for use in a narrow space according to claim 6, characterized in that: The traction member (6) further comprises a belt tensioning member (68) for adjusting the tension of the transmission belt (611), the belt tensioning member (68) comprising an L-shaped rod (681) and a gear sleeve (682) fixedly arranged in the middle of the double-thread screw (61), the lower end of the L-shaped rod (681) being fixedly connected to the inner bottom side of the traction platform (1), and the other end of the outer lateral sliding sleeve of the L-shaped rod (681) is provided with a limit sleeve (683), the limit sleeve (683) 83) is connected to the upper part of a rack (684), the gear sleeve (682) is meshed with the rack (684), the upper part of one end of the limiting sleeve (683) is connected to a fixed shaft (685), the upper end of the fixed shaft (685) is connected to a base (686), and the upper part of the base (686) is rotatably provided with two tensioning rollers (687) that are adapted to the thickness of the transmission belt (611), and the transmission belt (611) passes between the two tensioning rollers (687).

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