Cable laying device for building mechanical and electrical installation and laying method thereof

Abstract

The invention relates to the technical field of cable laying, in particular to a cable laying device for building mechanical and electrical installation and a laying method of the cable laying device. Comprising a base, a rotating shaft is rotationally connected to the upper portion of the base, a roller is arranged outside the rotating shaft, a cable is wound around the roller, a moving device and a clamping device are arranged on the base, the moving device is arranged below the roller, and a movable block is arranged above the base. When the cable is pulled out, the cable drives the guide roller to move upwards under the action of stress, the guide roller drives the clamping block to relieve position limitation on the roller, the roller rotates to start cable laying at the moment, the cable laying efficiency is improved, when the cable is stopped being pulled out, the cable drives the guide roller to move downwards, the clamping block automatically locks the position of the roller, and the cable laying efficiency is improved. The situation that when cable laying is stopped, too many cables are released under the inertia effect of the rollers, and consequently normal operation of cable laying work is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable laying, in particular to a cable laying device and a laying method for building electromechanical installation. Background Art

[0002] A cable is usually a rope-like cable made up of several or several groups of conductors twisted together. Each group of conductors is insulated from each other and are often twisted around a center. The entire outside is covered with a highly insulating covering. It is mostly installed in the air or underground or underwater for telecommunications or power transmission. Cable laying operations are usually carried out using a cable laying device. The cable laying device mainly includes a support frame arranged on a base, on which a roller with a cable wound around it is rotatably arranged. During laying, one end of the cable is manually pulled out from the roller and fixed. At this time, the cable is pulled to drive the roller to rotate, thereby laying the cable on the roller.

[0003] In the existing cable laying device, the cable is evenly wound on the cable reel in a threaded shape. Since the end of the cable away from the cable reel is fixed, the end close to the cable reel will shift left and right with the rotation of the roller. The cable will therefore be in an offset state. If the cable is loose at this time, the cables will be intertwined with each other. When the cable is pulled again, the cable will become loose and fall off, thereby affecting the release of the cable. At the same time, during the laying process, when the cable laying needs to be stopped, the roller will often continue to rotate under the action of inertia, resulting in excessive release of the cable, thereby affecting the normal operation of the cable laying work and reducing the cable laying efficiency. Summary of the invention

[0004] The object of the present invention is to provide a cable laying device and a laying method for building electromechanical installation to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, one of the objects of the present invention is to provide a cable laying device for building mechanical and electrical installation, comprising a base, a rotating shaft is rotatably connected to the top of the base, a roller is arranged outside the rotating shaft, a cable is wound around the roller, a moving device and a clamping device are arranged on the base, and the moving device is arranged below the roller, a movable block is arranged above the base, and the position of the movable block is higher than that of the moving device, and the cable on the roller is pulled by manpower from below to pass through the moving device and the movable block in sequence; When the cable passes through the moving device, the cable drives the moving device to move upward, and the movement of the moving device drives the clamping device to work; the clamping device works to release the position restriction of the roller; When the pulling of the pulling cable stops, the moving device moves downward to fix the cable, and the clamping device works to lock the position of the roller.

[0006] As a further improvement of the present technical solution, the moving device includes a mounting seat arranged under the roller wheel, sliders are slidably connected on both sides of the mounting seat, fixed rods are fixedly connected to the two sliders, and both ends of the fixed rods pass through the interior of the sliders, the fixed rod walls are rotatably connected to guide rollers, compression springs are fixedly connected on both sides of the slider, and the other end of the compression spring is fixedly connected to the inner wall of the mounting seat, and the cable drives the guide roller to move upward under the action of force, and the movement of the guide roller drives the fixed rod to move forward, and the fixed rod drives the slider to move upward and squeeze the compression spring.

[0007] As a further improvement of the present technical solution, the clamping device is symmetrically arranged in two groups and is arranged at both ends of the roller. The clamping device includes support plates fixed on both sides of the base, and a fixed block is fixedly connected to the support plate. A clamping block is rotatably connected to the fixed block, and one end of the clamping block is rotatably connected to a push rod, and the other end of the push rod is fixedly connected to the fixed rod. When the fixed rod moves upward, it drives the push rod upward, and the push rod pushes the clamping block to rotate upward.

[0008] As a further improvement of the present technical solution, teeth are provided on one end of the clamping block away from the push rod, and a gear is fixedly connected to the rotating shaft. The gear is meshingly connected to the teeth, and the clamping block rotates to disengage from the contact with the gear, so that the clamping block releases the position restriction on the roller, and the roller rotates to start cable laying. When the cable is not affected by force, the guide roller moves downward, and the movement of the guide roller drives the clamping block to rotate. The rotation of the clamping block locks the position of the roller, so that the roller stops laying the cable.

[0009] As a further improvement of the present technical solution, the support plate is rotatably connected to a side plate, the interior of the side plate is slidably connected to the exterior of the push rod, a return spring is fixedly connected to the rod wall of the push rod and one side of the side plate, and the return spring is sleeved on the push rod. When the push rod moves upward, it squeezes the return spring. When the push rod moves downward, the reaction force of the return spring drives the push rod to quickly reset, so that the engaging block engages the gear.

[0010] As a further improvement of the present technical solution, a limiting plate is provided on the mounting seat, and the limiting plate is provided directly below the guide roller, a plurality of cable grooves are provided on the limiting plate, both ends of the limiting plate are slidably connected to an adjacent side of the mounting seat, an extrusion plate is provided on the lower side of the limiting plate, and a plurality of tension springs are fixedly connected to the upper side of the extrusion plate and the lower side of the limiting plate. When the guide roller moves downward, the guide roller moves downward and squeezes the limiting plate, so that the cable below the guide roller is clamped in the cable groove of the limiting plate to fix the position of the cable.

[0011] As a further improvement of the present technical solution, a plurality of threaded rods are threadedly connected to the lower side of the mounting seat, and the upper ends of the threaded rods are fixedly connected to the lower side of the extrusion plate. The threaded rods are rotated to drive the extrusion plate to move upward, and the extrusion plate drives the limit plate to move upward through the tension spring.

[0012] As a further improvement of the technical solution, extrusion springs are fixedly connected to both sides of the mounting seat, one end of the two extrusion springs away from the mounting seat is slidably connected to the side wall of the base, and moving blocks are fixedly connected to the inner wall of the base on both sides of the extrusion springs.

[0013] As a further improvement of the present technical solution, one end of the rotating shaft passes through one side of the base, a screw rod is rotatably connected to the top of the base, one end of the screw rod passes through one side of the base, one end of the screw rod and one end of the rotating shaft are jointly sleeved with a belt, the outside of the screw rod is threadedly connected to the inner wall of the movable block, the rotation of the rotating shaft drives the screw rod to rotate through the belt, and the rotation of the screw rod drives the movable block to reciprocate.

[0014] The second object of the present invention is to provide a method for operating the cable laying device for building electromechanical installation as described above to lay cables, comprising the following method steps: S1. First, one end of the cable is passed through the moving device and the movable block from the bottom of the roller in sequence. When the cable is pulled with force, the force on the cable drives the moving device to move upward, and the movement of the moving device drives the clamping device to rotate. The rotation of the clamping device releases the position restriction of the roller, so that the roller starts to lay the cable; S2, when the cable is stopped from being pulled, the cable is not acted upon by force and drives the moving device to move downward, the movement of the moving device drives the clamping device to rotate, and the rotation of the clamping device locks the position of the roller, so that the roller stops laying the cable; S3. When the mobile device moves downward, the mobile device can fix the position of the cable on the mobile device so that the cable is not easy to loosen and fall off.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the cable laying device and laying method for building electromechanical installation, by pulling the cable, the cable will drive the guide roller to move upward under the action of force, and the guide roller drives the clamping block to rotate and disengage from the contact with the gear, so that the clamping block releases the position restriction on the roller. At this time, the roller rotates to start cable laying, which improves the cable laying efficiency.

[0016] 2. In the cable laying device and laying method for building mechanical and electrical installation, when the pulling of the cable stops, the cable is not acted upon by force and drives the guide roller to move downward, and the downward movement of the guide roller drives the clamping block to rotate upward, so that the clamping block automatically locks the position of the roller, causing the roller to stop laying the cable, thereby avoiding the phenomenon that the cable is released too much due to the inertia of the roller when the cable laying is stopped, causing the cable to loosen and fall off, thereby affecting the normal operation of the cable laying work.

[0017] 3. In the cable laying device and laying method for building mechanical and electrical installation, when the guide roller moves downward, the guide roller moves downward and squeezes the limit plate, so that the cable under the guide roller is clamped in the cable groove of the limit plate, and the position of the cable is fixed, so that the cable is not easy to loosen and fall off at one end away from the roller, thereby ensuring the stability of the cable. At the same time, with the cooperation of the threaded rod and the extrusion plate, the limit plate is always in contact with the cable, which is convenient for the limit plate to fix the position of cables of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first overall structural schematic diagram of the present invention; Figure 2 It is a second overall structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the mounting seat of the present invention; Figure 4 This is one of the cross-sectional schematic diagrams of the base of the present invention; Figure 5 This is the second cross-sectional schematic diagram of the base of the present invention; Figure 6 It is a structural schematic diagram of the moving block of the present invention; Figure 7 is one of the cross-sectional schematic diagrams of the mobile device of the present invention; Figure 8 This is the second structural schematic diagram of the mobile device of the present invention; Fig. 9 It is a schematic diagram of the enlarged structure of point A of the present invention; Fig.10 It is a structural schematic diagram of the clamping device of the present invention.

[0019] The meaning of each number in the figure is: 1. Base; 11. Rotating shaft; 12. Roller; 13. Screw; 14. Belt; 15. Movable block; 2. Moving device; 21. Mounting seat; 211. Extrusion spring; 222. Moving block; 22. Limiting plate; 23. Sliding block; 24. Guide roller; 25. Fixed rod; 26. Compression spring; 27. Extrusion plate; 28. Extension spring; 29. ​​Threaded rod; 3. Clamping device; 31. Support plate; 32. Gear; 33. Fixed block; 34. Clamping block; 35. Side plate; 36. Push rod; 37. Return spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. Example

[0023] See also Figure 1-Figure 10 As shown, one of the purposes of this embodiment is to provide a cable laying device for building mechanical and electrical installation, including a base 1, a rotating shaft 11 is rotatably connected to the top of the base 1, a roller 12 is arranged outside the rotating shaft 11, a cable is wound around the roller 12, a moving device 2 and a clamping device 3 are arranged on the base 1, and the moving device 2 is arranged below the roller 12, a movable block 15 is arranged above the base 1, and the position of the movable block 15 is higher than that of the moving device 2, and the cable on the roller 12 is pulled by manpower from below to pass through the moving device 2 and the movable block 15 in sequence; When the cable passes through the moving device 2, the cable drives the moving device 2 to move upward, and the movement of the moving device 2 drives the clamping device 3 to work; the clamping device 3 works to release the position restriction of the roller 12; When the pulling of the cable stops, the moving device 2 moves downward to fix the cable, and the clamping device 3 works to lock the position of the roller 12.

[0024] See also Figure 1-Figure 9 As shown, the mobile device 2 includes a mounting seat 21 arranged below the roller 12, and sliders 23 are slidably connected to the two sides of the mounting seat 21. Fixed rods 25 are fixedly connected to the two sliders 23, and both ends of the fixed rods 25 pass through the interior of the sliders 23. The rod wall of the fixed rod 25 is rotatably connected to the guide roller 24. Compression springs 26 are fixedly connected to the two sides of the slider 23, and the other end of the compression spring 26 is fixedly connected to the inner wall of the mounting seat 21. When in use, one end of the cable is passed from the bottom of the roller 12 through the guide roller 24 and the limit plate 22, and then passed through the movable block 15. Since the guide roller 24 is located at the roller 12, and the position of the movable block 15 is higher than the position of the guide roller 24, so that when the cable is pulled vigorously, the cable is in a V-shaped state, which is convenient for straightening the cable. Under the action of force, the cable will drive the guide roller 24 to move upward, and the movement of the guide roller 24 drives the fixed rod 25 to move upward, and the fixed rod 25 drives the slider 23 to move upward and squeeze the compression spring 26, and the elastic force of the compression spring 26 located above is greater than the elastic force of the compression spring 26 located below, because the compression spring 26 located above not only has to resist the upward force applied from the outside, but also has to support the elastic force of the compression spring 26 below.

[0025] See also Figure 7 and Fig.10 As shown, two groups of the clamping device 3 are symmetrically arranged and arranged at both ends of the roller 12. The clamping device 3 includes a support plate 31 fixed on both sides of the base 1, a fixed block 33 is fixedly connected to the support plate 31, a clamping block 34 is rotatably connected to the fixed block 33, one end of the clamping block 34 is rotatably connected to a push rod 36, and the other end of the push rod 36 is fixedly connected to the fixed rod 25, a side plate 35 is rotatably connected to the support plate 31, the inside of the side plate 35 is slidably connected to the outside of the push rod 36, and a rod wall of the push rod 36 is fixedly connected to one side of the side plate 35 with a return spring 3 7, and the reset spring 37 is sleeved on the push rod 36, and the end of the clamping block 34 away from the push rod 36 is provided with teeth, and the rotating shaft 11 is fixedly connected with a gear 32, and the gear 32 is meshed with the teeth. The fixed rod 25 moves upward to drive the push rod 36 to move upward, and the push rod 36 pushes the clamping block 34 on the side plate 35 to rotate upward and squeeze the reset spring 37, and the clamping block 34 rotates to disengage from the contact with the gear 32, so that the clamping block 34 releases the position restriction of the roller 12. At this time, the cable drives the roller 12 to rotate, and the roller 12 rotates to start cable laying; When the cable is stopped being pulled, the cable is not acted upon by force and drives the guide roller 24 downward, which drives the fixing rod 25 to move, and the fixing rod 25 drives the push rod 36 downward, and the push rod 36 is quickly reset under the reaction force of the reset spring 37. At this time, the clamping block 34 rotates upward to engage the gear 32, thereby locking the position of the roller 12. The roller 12 can be automatically locked to stop laying the cable, so as to prevent the roller 12 from releasing too much cable due to inertia when it stops rotating, causing the cable to loosen and fall off, thereby affecting the normal operation of the cable laying work.

[0026] See also Figure 6-Figure 7 As shown, a limit plate 22 is provided on the mounting seat 21, and the limit plate 22 is provided directly below the guide roller 24. A plurality of cable grooves are provided on the limit plate 22. Both ends of the limit plate 22 are slidably connected to an adjacent side of the mounting seat 21. An extrusion plate 27 is provided on the lower side of the limit plate 22. A plurality of tension springs 28 are fixedly connected to the upper side of the extrusion plate 27 and the lower side of the limit plate 22. When the guide roller 24 moves downward, the guide roller 24 moves downward and squeezes the limit plate 22, so that the cable below the guide roller 24 is clamped in the limit plate 27. The position of the cable is fixed in the cable groove of the positioning plate 22, so that the cable is not easy to loosen and fall off, thereby ensuring the stability of the cable. A plurality of threaded rods 29 are threadedly connected to the lower side of the mounting seat 21, and the upper ends of the threaded rods 29 are fixedly connected to the lower side of the extrusion plate 27. The threaded rods 29 are rotated to drive the extrusion plate 27 to move upward, and the extrusion plate 27 drives the limiting plate 22 to move upward through the tension spring 28, so that the limiting plate 22 is always in contact with the cable, so that the limiting plate 22 can fix the position of cables of different sizes.

[0027] See also Figure 3 and Figure 6 As shown, extrusion springs 211 are fixedly connected to both sides of the mounting seat 21, and one end of the two extrusion springs 211 away from the mounting seat 21 is slidably connected to the side wall of the base 1. Moving blocks 222 are fixedly connected to the inner wall of the base 1 on both sides of the extrusion springs 211. The mounting seat 21 is driven to move up and down by the extrusion springs 211. The movement of the mounting seat 21 facilitates the adjustment of the angle between the V shapes, thereby adjusting the tension of the cable.

[0028] See also Figure 1 and Figure 2 As shown, one end of the rotating shaft 11 passes through one side of the base 1, and a screw rod 13 is rotatably connected to the top of the base 1. One end of the screw rod 13 passes through one side of the base 1, and one end of the screw rod 13 and one end of the rotating shaft 11 are together provided with a belt 14. The outside of the screw rod 13 is threadedly connected to the inner wall of the movable block 15. The rotation of the rotating shaft 11 drives the screw rod 13 to rotate through the belt 14, and the rotation of the screw rod 13 drives the movable block 15 to reciprocate, so that the cable is laid more evenly.

[0029] The second purpose of this embodiment is to provide a method for laying cables using a cable laying device for building mechanical and electrical installation, comprising the following steps: S1. First, one end of the cable is passed through the moving device 2 and the movable block 15 from the bottom of the roller 12 in sequence. When the cable is pulled with force, the moving device 2 is driven upward by the force exerted on the cable. The movement of the moving device 2 drives the clamping device 3 to rotate. The clamping device 3 rotates to release the position restriction of the roller 12, so that the roller 12 starts to lay the cable. S2, when the cable is stopped from being pulled, the cable is not acted upon by force and the moving device 2 moves downward, the moving device 2 moves and drives the clamping device 3 to rotate, the clamping device 3 rotates to lock the position of the roller 12, and the roller 12 stops laying the cable; S3. When the mobile device 2 moves downward, the mobile device 2 can fix the position of the cable on the mobile device 2 so that the cable is not easy to loosen and fall off.

[0030] When the cable laying device and laying method for building electromechanical installation of the present invention are used, one end of the cable is passed from below the roller 12 through the guide roller 24 and the limit plate 22, and then passed through the movable block 15. Since the guide roller 24 is located below the roller 12, and the position of the movable block 15 is higher than that of the guide roller 24, when the cable is pulled vigorously, the cable is in a V-shaped state, which is convenient for straightening the cable. Under the action of the force, the cable will drive the guide roller 24 to move upward, and the movement of the guide roller 24 drives the fixing rod 25 to move upward. The upward movement of the fixing rod 25 drives the push rod 36 to move upward, and the push rod 36 pushes the clamping block 34 on the side plate 35 to rotate upward and squeeze the reset spring 37. The clamping block 34 rotates out of contact with the gear 32, so that the clamping block 34 releases the position limit of the roller 12. At this time, the cable drives the roller 12 to rotate, and the roller 12 rotates to start cable laying. The cable is laid by pulling the cable, thereby improving the cable laying efficiency. When the cable is stopped from being pulled, the cable is not acted upon by force and drives the guide roller 24 to move downward, the guide roller 24 moves downward and drives the fixing rod 25 to move, the fixing rod 25 drives the push rod 36 to move downward, and the push rod 36 is quickly reset under the reaction force of the reset spring 37, at which time the clamping block 34 rotates upward, so that the clamping block 34 clamps the gear 32, thereby locking the position of the roller 12, and the roller 12 can be automatically locked, so that the roller 12 stops laying the cable, and prevents the roller 12 from releasing too much cable due to inertia when the roller 12 stops rotating, causing the cable to loosen and fall off, thereby affecting the normal operation of the cable laying work; When the guide roller 24 moves downward, the guide roller 24 moves downward and squeezes the limit plate 22, so that the cable under the guide roller 24 is clamped in the cable groove of the limit plate 22, and the position of the cable is fixed, so that the cable is not easy to loosen and fall off, thereby ensuring the stability of the cable. At the same time, the threaded rod 29 is rotated to drive the squeezing plate 27 to move upward, and the squeezing plate 27 drives the limit plate 22 to move upward through the tension spring 28, so that the limit plate 22 is always in contact with the cable, which is convenient for the limit plate 22 to fix the position of cables of different sizes.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cable laying device for building mechanical and electrical installation, comprising a base (1), characterized in that: A rotating shaft (11) is rotatably connected above the base (1), a roller (12) is disposed outside the rotating shaft (11), a cable is wound around the roller (12), a moving device (2) and a clamping device (3) are disposed on the base (1), and the moving device (2) is disposed below the roller (12), a movable block (15) is disposed above the base (1), and the position of the movable block (15) is higher than that of the moving device (2), and the cable on the roller (12) is pulled by manpower from below the roller (12) to pass through the moving device (2) and the movable block (15) in sequence; When the cable passes through the moving device (2), the cable drives the moving device (2) to move upward, and the movement of the moving device (2) drives the clamping device (3) to work; the clamping device (3) works to release the position restriction of the roller (12); When the pulling of the cable stops, the moving device (2) moves downward to fix the cable, and the clamping device (3) works to lock the position of the roller (12).

2. The cable laying device for building mechanical and electrical installation according to claim 1, characterized in that: The moving device (2) comprises a mounting seat (21) arranged below the roller wheel (12), and sliders (23) are slidably connected to the two sides of the mounting seat (21), and fixed rods (25) are fixedly connected to the two sliders (23), and both ends of the fixed rods (25) extend through the interior of the sliders (23), and the rod walls of the fixed rods (25) are rotatably connected to guide rollers (24), and compression springs (26) are fixedly connected to the two sides of the slider (23), and the other end of the compression spring (26) is fixedly connected to the inner wall of the mounting seat (21), and the cable drives the guide roller (24) to move upward under the action of force, and the movement of the guide roller (24) drives the fixed rod (25) to move forward, and the fixed rod (25) drives the slider (23) to move upward and squeeze the compression spring (26).

3. The cable laying device for building mechanical and electrical installation according to claim 1, characterized in that: The clamping device (3) is symmetrically arranged in two groups and is arranged at both ends of the roller (12). The clamping device (3) comprises a support plate (31) fixed to both sides of the base (1). A fixing block (33) is fixedly connected to the support plate (31). A clamping block (34) is rotatably connected to the fixing block (33). One end of the clamping block (34) is rotatably connected to a push rod (36). The other end of the push rod (36) is fixedly connected to the fixing rod (25). When the fixing rod (25) moves upward, the push rod (36) is driven to move upward. The push rod (36) pushes the clamping block (34) to rotate upward.

4. The cable laying device for building mechanical and electrical installation according to claim 3, characterized in that: The end of the clamping block (34) away from the push rod (36) is provided with teeth, and the rotating shaft (11) is fixedly connected with a gear (32), and the gear (32) is meshed with the teeth. The clamping block (34) rotates to disengage from the gear (32), so that the clamping block (34) releases the position restriction on the roller (12), and the roller (12) rotates to start laying the cable. When the cable is not acted upon by force and drives the guide roller (24) to move downward, the guide roller (24) moves and drives the clamping block (34) to rotate. The clamping block (34) rotates to lock the position of the roller (12), so that the roller (12) stops laying the cable.

5. The cable laying device for building mechanical and electrical installation according to claim 3, characterized in that: The support plate (31) is rotatably connected to a side plate (35), the interior of the side plate (35) is slidably connected to the exterior of a push rod (36), a return spring (37) is fixedly connected to a rod wall of the push rod (36) and one side of the side plate (35), and the return spring (37) is sleeved on the push rod (36), the push rod (36) presses the return spring (37) when it moves upward, and when the push rod (36) moves downward, the reaction force of the return spring (37) drives the push rod (36) to quickly return to its original position, so that the clamping block (34) clamps the gear (32).

6. The cable laying device for building mechanical and electrical installation according to claim 2, characterized in that: A limit plate (22) is provided on the mounting seat (21), and the limit plate (22) is provided directly below the guide roller (24). A plurality of cable grooves are provided on the limit plate (22). Two ends of the limit plate (22) are slidably connected to an adjacent side of the mounting seat (21). An extrusion plate (27) is provided on the lower side of the limit plate (22). A plurality of tension springs (28) are fixedly connected between the upper side of the extrusion plate (27) and the lower side of the limit plate (22). When the guide roller (24) moves downward, the guide roller (24) moves downward and squeezes the limit plate (22), so that the cable below the guide roller (24) is clamped in the cable groove of the limit plate (22), thereby fixing the position of the cable.

7. The cable laying device for building mechanical and electrical installation according to claim 2, characterized in that: A plurality of threaded rods (29) are threadedly connected to the lower side of the mounting seat (21); the upper ends of the threaded rods (29) are fixedly connected to the lower side of the extrusion plate (27); the threaded rods (29) are rotated to drive the extrusion plate (27) to move upward, and the extrusion plate (27) drives the limit plate (22) to move upward via the tension spring (28).

8. The cable laying device for building mechanical and electrical installation according to claim 2, characterized in that: Extrusion springs (211) are fixedly connected to both sides of the mounting seat (21); one end of the two extrusion springs (211) away from the mounting seat (21) is slidably connected to the side wall of the base (1); and moving blocks (222) are fixedly connected to the inner wall of the base (1) on both sides of the extrusion springs (211).

9. The cable laying device for building mechanical and electrical installation according to claim 1, characterized in that: One end of the rotating shaft (11) passes through one side of the base (1); a screw rod (13) is rotatably connected to the top of the base (1); one end of the screw rod (13) passes through one side of the base (1); one end of the screw rod (13) and one end of the rotating shaft (11) are sleeved with a belt (14); the outside of the screw rod (13) is threadedly connected to the inner wall of the movable block (15); the rotating shaft (11) rotates to drive the screw rod (13) to rotate through the belt (14); and the rotation of the screw rod (13) drives the movable block (15) to reciprocate.

10. A method for operating a cable laying device for building mechanical and electrical installation according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1. First, one end of the cable is passed through the moving device (2) and the movable block (15) from below the roller (12). When the cable is pulled with force, the moving device (2) is driven upward by the force exerted on the cable. The movement of the moving device (2) drives the clamping device (3) to rotate. The rotation of the clamping device (3) releases the position restriction of the roller (12), so that the roller (12) starts to lay the cable. S2, when the pulling of the cable stops, the cable is not acted upon by force and drives the moving device (2) to move downward, the movement of the moving device (2) drives the clamping device (3) to rotate, and the rotation of the clamping device (3) locks the position of the roller (12), so that the roller (12) stops laying the cable; S3. When the moving device (2) moves downward, the moving device (2) can fix the position of the cable on the moving device (2) so that the cable is not likely to loosen or fall off.

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