A traction device for laying subway cables

Abstract

The present application relates to a kind of subway cable laying traction device, including walking mechanism, clamping mechanism, steering mechanism and auxiliary mechanism, walking mechanism includes support platform, walking wheel being arranged in the bottom of the support platform and for driving the rotation of the walking motor;Clamping mechanism is arranged on the top of support platform, for clamping cable;Steering mechanism is slidably connected on support platform, for making traction device flexible, quickly through the bend of cable conduit;Auxiliary mechanism is rotatably connected on the top of support platform, for assisting walking mechanism so that traction device can more smoothly move in pipe;Compared with the corner of cable conduit when the cable traction device in prior art turns, it is very inflexible, even can be stuck in pipe problem, the cable traction device of the present application is very flexible when turning at the corner of cable conduit, not easy to be stuck in pipe, improves the efficiency of traction.

Description

Technical Field

[0001] This invention relates to the field of rail transit construction technology, specifically to a traction device for laying subway cables. Background Technology

[0002] With urban development, subway construction is increasing, often requiring the laying of a large number of cables. Some cable laying methods involve pre-burying a cable duct underground and then pulling the cable along the duct. However, this method can cause significant wear and tear on the insulation of the cable's base.

[0003] To avoid wear on the bottom of the cable, a traction device is usually used to pull the cable through. However, due to the large number of cables, large cross-sectional area, and long laying distance of subway cables, existing traction devices increase the length of the fixing part in order to strengthen the fixation and traction force of the cable. However, the increased fixing part makes the traction device very inflexible when turning at the corner of the pipe, and may even get stuck in the pipe. Summary of the Invention

[0004] The purpose of this invention is to provide a traction device for laying subway cables, addressing the problem that existing cable traction devices are very inflexible when turning at corners in cable ducts, and may even get stuck inside the duct.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A traction device for laying subway cables includes a traveling mechanism, which includes a support platform, traveling wheels disposed at the bottom of the support platform, and a traveling motor for driving the traveling wheels to rotate. The top of the support platform is provided with a clamping mechanism for clamping cables. The device also includes a steering mechanism, which includes a steering wheel, a steering support, and a steering connector. The steering connector is slidably connected to the support platform, with the sliding direction being horizontal and perpendicular to the traveling direction of the traveling mechanism. Each side of the steering connector has a steering support, one end of which is fixedly connected to the steering connector, and the other end of which is provided with the steering wheel.

[0006] The present invention, employing the aforementioned technical solution, clamps the cable using a clamping mechanism. Driven by a traveling motor, the traveling mechanism pulls the cable through the cable conduit. When encountering a bend in the conduit, the steering wheel on one side is subjected to pressure from the conduit wall, causing the steering mechanism to slide relative to the support platform to the other side, thus preventing it from getting stuck in the conduit. Simultaneously, the conduit wall, through the steering wheel, provides a centripetal force to the traction device, allowing it to smoothly navigate bends. Compared to the prior art, where cable traction devices are very inflexible at cable conduit corners and may even get stuck, the cable traction device of the present invention is very flexible at cable conduit corners and is less prone to getting stuck, thus improving traction efficiency.

[0007] Furthermore, it also includes an auxiliary mechanism, which includes an auxiliary wheel and an auxiliary support. One end of the auxiliary support is rotatably connected to the top of the support platform, and the direction of the rotation axis is parallel to the walking direction of the walking mechanism. The other end of the auxiliary support is provided with the auxiliary wheel. The auxiliary support can be rotated and adjusted so that the auxiliary wheel contacts the inner wall of the pipe of different sizes, which can provide support for the walking mechanism and enable the traction device to move more smoothly in the pipe.

[0008] Furthermore, the support platform includes a top plate, a bottom plate, and a support column connecting the two. A groove is provided on the bottom surface of the top plate, and the steering connector is embedded in the groove. The support platform has a simple structure, and a space for accommodating the steering mechanism is formed between the top plate and the bottom plate, making the overall structure of the traction device compact.

[0009] Furthermore, the walking mechanism includes at least two sets of walking wheels arranged at intervals along the walking direction. Each set of walking wheels consists of two wheels, and the two walking wheels are connected by a rotating rod. A fixed bushing that rotates relative to the rotating rod is fitted on the rotating rod. The fixed bushing is fixedly mounted on the bottom surface of the base plate. The walking motor is fixedly mounted on the base plate, and the output end of the walking motor is connected to the rotating rod. The driving structure of the walking mechanism is simple and easy to implement.

[0010] Furthermore, the support column includes a lifting fixed component, a lifting movable component, and a lifting motor. One end of the lifting fixed component is fixedly connected to the base plate, and the other end of the lifting fixed component is slidably connected to the lifting movable component. One end of the lifting movable component is fixedly connected to the top plate. The lifting motor is disposed inside the lifting fixed component, connected to the lifting movable component, and drives the lifting movable component to perform lifting movements. By setting the support column as a liftable mechanism, the height of the top plate can be adjusted to adapt to different types of pipes, thereby allowing the cable to enter the pipe at a suitable height to reduce cable wear.

[0011] Furthermore, the clamping mechanism includes a clamping connector, a first clamping member and a second clamping member, one end of which is rotatably connected to the top surface of the support platform. The first clamping member and the second clamping member are arranged opposite to each other. The clamping connector is used to fix the first clamping member and the second clamping member together. This clamping mechanism can ensure that the cable is firmly clamped, and it has a simple structure and is easy to manufacture.

[0012] Furthermore, the traveling mechanism is provided with at least two steering mechanisms arranged at intervals along its traveling direction; at least two auxiliary mechanisms are provided on each side of the clamping mechanism on the traveling mechanism. This arrangement allows the traction device to fit more fully against the inner wall of the cable duct, improving the smoothness of the traction device when turning.

[0013] Furthermore, the system includes at least two walking mechanisms, and an elastic connector is provided between the clamping mechanisms on any two adjacent walking mechanisms. The elastic connector is sleeved on the outside of the cable. The elastic connector can prevent the cable from contacting the pipe wall, and the length of the elastic connector can be adjusted arbitrarily to accommodate two walking mechanisms with different spacing.

[0014] Furthermore, the elastic connector is a hollow telescopic tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) By setting a steering mechanism, when encountering a bend in the pipe, the steering wheel on one side is subjected to the pressure of the pipe wall, which causes the steering mechanism to slide relative to the support platform to the other side, so it will not get stuck in the pipe. At the same time, the inner wall of the pipe will provide a bend centripetal force to the traction device through the steering wheel, so that the traction device can smoothly pass through the bend; 2) By setting an auxiliary mechanism, the auxiliary support can be rotated and adjusted so that the auxiliary wheel can contact the inner wall of pipes of different sizes, which can provide support for the walking mechanism, so that the traction device can move more smoothly in the pipe; 3) The support column is set as a liftable mechanism, so that the height of the top plate can be adjusted to adapt to different types of pipes, so that the cable enters the pipe at a suitable height to reduce cable wear; 4) An elastic connector is provided on the cable sleeve between the two walking mechanisms, which can prevent the cable from contacting the pipe wall, and the length of the elastic connector can be adjusted arbitrarily to adapt to two walking mechanisms with different spacing. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram from a first perspective of the present invention; Figure 2 This is a structural schematic diagram from a second perspective of the present invention; Figure 3 This is a structural schematic diagram of the invention from a third perspective; Figure 4This is a schematic diagram of the structure of the elastic connector connecting the two clamping mechanisms.

[0017] In the diagram, the markings are as follows: 110-Walking mechanism; 111-Top plate; 112-Walking wheel; 113-Rotating rod; 114-Base plate; 120-Clamping mechanism; 121-Clamping connector; 122-First clamping component; 123-Second clamping component; 130-Steering mechanism; 131-Steering wheel; 132-Steering support component; 133-Steering connector; 140-Auxiliary mechanism; 141-Auxiliary wheel; 142-Auxiliary support component; 150-Support column; 151-Lifting fixed component; 152-Lifting movable component. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] This embodiment provides a traction device for laying subway cables, as shown in Figures 1-4, including a traveling mechanism 110, a clamping mechanism 120, a steering mechanism 130, and an auxiliary mechanism 140. The traveling mechanism 110 includes a support platform, four traveling wheels 112, and a traveling motor. The support platform includes a top plate 111, a bottom plate 114, and a support column 150 connecting the two. The four traveling wheels 112 are divided into two groups, front and rear, with two traveling wheels 112 in each group. The two traveling wheels 112 are connected by a rotating rod 113, so there are two rotating rods 113. The two rotating rods 113 are arranged in parallel. A fixed bushing that can rotate relative to the rotating rod 113 is sleeved on the rotating rod 113. The outer wall of the fixed bushing is fixedly connected to the bottom plate 114. The traveling motor is fixedly connected to the bottom plate 114. The traveling motor and the rotating rod 113 are connected by gear meshing. The support column 150 includes a lifting fixed component 151, a lifting movable component 152, and a lifting motor. Both the lifting fixed component 151 and the lifting movable component 152 are cylindrical, and the lifting movable component 152 is sleeved on the outer wall of the lifting fixed component 151. The interior of the lifting movable component 152 is hollow. The bottom end of the lifting fixed component 151 is fixedly connected to the base plate 114, and the top end of the lifting movable component 152 is fixedly connected to the top plate 111. Inside the lifting fixed component 151, there is a lifting motor and a rack for lifting the lifting movable component 152. The lifting motor meshes with the rack and can drive the rack to move up and down. One end of the rack is fixedly connected to the top inner wall of the lifting movable component 152. When the lifting motor is working, the movement of the rack drives the lifting movable component 152 to move up and down, which in turn drives the top plate 111 to move up and down. Two parallel steering mechanisms 130 are provided at the bottom of the top plate 111. Each steering mechanism 130 includes two steering wheels 131, two steering supports 132, and a steering connector 133. A sliding groove is provided at the bottom of the top plate 111. The sliding groove is horizontal and perpendicular to the traveling direction of the traveling mechanism 110. The steering connector 133 is slidably connected to the sliding groove. Steering supports 132 are provided at opposite ends of the steering connector 133. Steering wheels 131 rotating around a fixed axis are fixed at the ends of the steering supports 132. When the traction device turns, the steering wheel 131 on one side is subjected to force, and the steering mechanism slides along the sliding groove in a direction away from the point of force. The inner wall of the pipe provides the traction device with a centripetal force for the curve, so that the traction device smoothly passes through the curve. A clamping mechanism 120 is provided on the upper end face of the top plate 111. The clamping mechanism 120 includes a clamping connector 121, a first clamping member 122, a second clamping member 123, and a positioning sleeve. Different models of positioning sleeves are selected according to the thickness of the cable and are fitted onto the outside of the cable. The positioning sleeve is a hollow cylinder with a slot on its side for the cable to enter. The positioning sleeve has a certain degree of flexibility, and the slot can open to both sides to allow the cable to enter. The first clamping member 122 and the second clamping member 123 are arranged opposite each other, and both the first clamping member 122 and the second clamping member 123 can rotate around their connection with the top plate 111. The positioning sleeve can be inserted between the first clamping member 122 and the second clamping member 123, and the outer diameter of the positioning sleeve is greater than or equal to the inner diameter of the first clamping member 122 and the second clamping member 123. The clamping connector 121 passes through the first clamping member 122. The connection position at the upper end of the second clamping member 123 fixes the first clamping member 122 and the second clamping member 123 together, and the clamping connector 121 is a bolt; On the top plate 111, there are two auxiliary mechanisms 140 on each side of the clamping mechanism 120, for a total of four auxiliary mechanisms 140. Each auxiliary mechanism 140 includes an auxiliary wheel 141 and an auxiliary support member 142. Four connecting seats are provided on the top plate 111. One end of the auxiliary support member 142 is cylindrical and can be locked inside the connecting seat and rotate around a fixed axis. The direction of the rotation axis is parallel to the walking direction of the walking mechanism 110. The other end of the auxiliary support member 142 is fixedly connected to the auxiliary wheel 141 that can rotate around the fixed axis. When using the traction device, first, a positioning sleeve is fitted onto the cable. Then, the first clamping member 122 and the second clamping member 123 are rotated open, and the cable and the positioning sleeve are placed between the first clamping member 122 and the second clamping member 123. Next, the first clamping member 122 and the second clamping member 123 are rotated closed and clamp the positioning sleeve. Then, the clamping connector 121 is passed through the connection position at the upper end of the first clamping member 122 and the second clamping member 123 to fix the first clamping member 122 and the second clamping member 123 in place. After the cable is fixed on the clamping mechanism 120, the traction device is placed into the pipe, and the height of the support column 150 is adjusted until the steering wheel 131 of the steering mechanism 130 contacts the inner wall of the pipe. The auxiliary mechanism 140 adjusts the auxiliary rotating support member 142 according to the height of the support column 150 so that the auxiliary wheel 141 contacts the inner wall of the pipe. Then, the traveling mechanism 110 drives the traction device to move into the pipe. When encountering a bend in the pipe, the steering wheel 131 on one side is subjected to pressure from the inner wall of the pipe, the steering mechanism 130 moves to the other side along the slide groove on the top plate 111, and the traveling mechanism 110 deflects in the direction of the centripetal force of the bend. The steering wheel 131 on the steering mechanism 130 subjected to force and the traveling wheel 112 on the traveling mechanism 110 near the side subjected to force contact the inner wall of the pipe and drive the traction device forward to pass through the bend. To facilitate the operation of the traction device, multiple walking mechanisms 110 can be provided. An elastic connector is provided between the clamping mechanisms 120 on each pair of walking mechanisms 110. The elastic connector is a hollow telescopic tube, and the cable between the two walking mechanisms 110 passes through the elastic connector.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A traction device for laying subway cables, characterized in that: The system includes a walking mechanism (110), which includes a support platform, a walking wheel (112) located at the bottom of the support platform, and a walking motor for driving the walking wheel (112) to rotate. The top of the support platform is provided with a clamping mechanism (120) for clamping cables. The system also includes a steering mechanism (130), which includes a steering wheel (131), a steering support (132), and a steering connector (133). The steering connector (133) is slidably connected to the support platform, and the sliding direction is horizontal and perpendicular to the walking direction of the walking mechanism (110). Each side of the steering connector (133) is provided with a steering support (132). One end of each steering support (132) is fixedly connected to the steering connector (133), and the other end of each steering support (132) is provided with a steering wheel (131). The support platform includes a top plate (111), a bottom plate (114), and a support column (150) connecting the two. The bottom surface of the top plate (111) is provided with a sliding groove, and the steering connector (133) is embedded in the sliding groove.

2. The traction device for laying subway cables according to claim 1, characterized in that: It also includes an auxiliary mechanism (140), which includes an auxiliary wheel (141) and an auxiliary support (142). One end of the auxiliary support (142) is rotatably connected to the top of the support platform, and the direction of the rotation axis is parallel to the walking direction of the walking mechanism (110). The other end of the auxiliary support (142) is provided with the auxiliary wheel (141).

3. The traction device for laying subway cables according to claim 1, characterized in that: The system includes at least two sets of walking wheels (112) arranged at intervals along the walking direction of the walking mechanism (110). Each set of walking wheels (112) consists of two wheels, and the two walking wheels (112) are connected by a rotating rod (113). A fixed bushing that rotates relative to the rotating rod (113) is fitted on the rotating rod (113). The fixed bushing is fixedly installed on the bottom surface of the base plate (114). The walking motor is fixedly installed on the base plate (114), and the output end of the walking motor is connected to the rotating rod (113).

4. The traction device for laying subway cables according to claim 1, characterized in that: The support column (150) includes a lifting fixed component (151), a lifting movable component (152), and a lifting motor. One end of the lifting fixed component (151) is fixedly connected to the base plate (114), and the other end of the lifting fixed component (151) is slidably connected to the lifting movable component (152). One end of the lifting movable component (152) is fixedly connected to the top plate (111). The lifting motor is located inside the lifting fixed component (151), and it is connected to the lifting movable component (152) and drives the lifting movable component (152) to perform lifting and lowering movements.

5. The traction device for laying subway cables according to claim 1, characterized in that: The clamping mechanism (120) includes a clamping connector (121), a first clamping member (122) and a second clamping member (123) whose ends are rotatably connected to the top surface of the support platform. The first clamping member (122) and the second clamping member (123) are arranged opposite to each other. The clamping connector (121) is used to fix the first clamping member (122) and the second clamping member (123) together.

6. The traction device for laying subway cables according to claim 2, characterized in that: The walking mechanism (110) is provided with at least two steering mechanisms (130) arranged at intervals along its walking direction; at least two auxiliary mechanisms (140) are provided on each side of the clamping mechanism (120) on the walking mechanism (110).

7. The traction device for laying subway cables according to any one of claims 1-6, characterized in that: It includes at least two walking mechanisms (110), and an elastic connector is provided between the clamping mechanisms (120) on any two adjacent walking mechanisms (110), the elastic connector being sleeved on the outside of the cable.

8. The traction device for laying subway cables according to claim 7, characterized in that: The elastic connector is a hollow telescopic tube.

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