An auxiliary limiting structure for a rail transit cable extrusion production line

Abstract

This invention belongs to the field of cable manufacturing and processing, and particularly relates to an auxiliary limiting structure for a rail transit cable extrusion production line. It is used to limit and guide cables within a cooling water tank. The structure includes two sets of fixed guide rails, which are respectively fixed to the inner walls of the left and right sides of the cooling water tank. Multiple sets of evenly distributed limiting components are arranged between the two sets of fixed guide rails. Each limiting component includes a mounting frame connected to the left and right fixed guide rails. A cloth roller is rotatably mounted on the mounting frame. Two sets of symmetrical angle adjustment parts are provided on both the foremost and rearmost mounting frames, and cloth rollers are mounted on the angle adjustment parts. This invention significantly reduces the local contact pressure on the cable, preventing cable deformation due to excessive local pressure. Simultaneously, it can propel the cable, acting as a booster, reducing the traction force required for cable movement, preventing tensile deformation due to excessive traction force, and further improving the cable forming quality.

Description

Technical Field

[0001] This invention belongs to the field of cable manufacturing and processing, and particularly relates to an auxiliary limiting structure for a rail transit cable extrusion production line. Background Technology

[0002] In the production process of rail transit cables, the extrusion production line plays a crucial role. Cables typically consist of conductors and insulation layers, and some also have an outermost protective layer. The insulation layer is generally formed by extruding insulating material through an extrusion device to cover the conductors. After extrusion, the cable is cooled and shaped by a cooling device before being directly wound up.

[0003] Currently, in cable extrusion production lines, water tanks are typically used to cool the extruded cables. When the cables pass through the water tank, auxiliary limiting mechanisms are usually installed to limit and guide their movement to prevent them from moving within the tank. However, existing auxiliary limiting mechanisms for cables in the water tank have the following drawbacks: After the surface of the cable, which has just been extruded from the extruder, has been initially cooled and shaped, it is directly inserted into the water tank at a certain angle. Traditional auxiliary limiting mechanisms are usually composed of guide wheels and guide rollers made of stainless steel. When the guide roller contacts the surface of the cable, the contact area between the guide roller and the cable is extremely small. This can cause the guide roller to compress and deform the surface of the cable. Since the cable has just entered the water and has not yet been fully cooled and solidified, the large deformation caused by the pressure on the surface of the cable may affect the final forming quality of the cable.

[0004] Therefore, there is an urgent need for an auxiliary limiting structure for rail transit cable extrusion production lines to solve the problem that cables are prone to deformation when guided by guide rollers before they are fully cooled. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an auxiliary limiting structure for a rail transit cable extrusion production line, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this application provides the following technical solution: The present invention provides an auxiliary limiting structure for a rail transit cable extrusion production line, used to limit and guide cables within a cooling water tank. It includes two sets of fixed guide rails, each fixedly mounted on the inner walls of the left and right sides of the cooling water tank. Multiple sets of evenly distributed limiting components are arranged between the two sets of fixed guide rails. Each limiting component includes a mounting frame connected to the left and right fixed guide rails. A cloth roller is rotatably mounted on the mounting frame. Two sets of symmetrical angle adjustment sections are provided on both the frontmost and rearmost mounting frames. Cloth rollers are mounted on the angle adjustment sections. Multiple cloth rollers carry the cable along the cable's movement direction. The cloth rollers, under the pressure of the cable, form concave surfaces that contact the cable surface. The portions of the cable at both ends of the cooling water tank are actively pressed by two cloth rollers, forming concave surfaces that contact the cable under pressure. Both the frontmost and rearmost mounting brackets are equipped with drive units for driving the corresponding fabric rollers to rotate. The drive units drive the two fabric rollers at the frontmost and rearmost sides to rotate actively, thereby assisting the movement of the cables carried on the fabric rollers.

[0007] According to an advantageous embodiment, the mounting frame includes two U-shaped fixing sleeves, which are fixedly mounted on corresponding fixed guide rails. Two connecting plates that are symmetrical and L-shaped are fixedly mounted on the lower side of the fixing sleeves. The ends of the horizontal sections of the two connecting plates are jointly fixedly connected to an inverted U-shaped vertical plate. An angle adjustment part is mounted on the corresponding vertical plate. A fixing frame is jointly fixedly mounted on the lower side of the two vertical plates. The cloth roller is rotatably connected to the corresponding fixing frame.

[0008] According to an advantageous embodiment, multiple threaded grooves are provided on the outer sides of the two vertical sections of the upright plate along its length, and a locking bolt that is threadedly connected to the corresponding threaded groove is rotatably provided on the connecting plate.

[0009] According to an advantageous embodiment, the angle adjustment unit includes a rotating frame that is rotatably disposed between two vertical sections of the upright plate and is T-shaped, the rotating frame being rotatably connected to the second cloth roller, and a downward driving member being disposed on the upright plate.

[0010] According to an advantageous embodiment, the upright plate has a sliding hole, and the pressing drive includes an adjusting screw rotatably disposed in the sliding hole, an adjusting slider is threadedly connected to the adjusting screw, and a transmission plate is hinged together between the adjusting slider and the rotating frame.

[0011] According to an advantageous embodiment, the drive unit includes a rotating shaft rotatably disposed between two corresponding upright plates on the left and right sides. One end of the rotating shaft is fixedly connected to a drive motor. The drive motor is fixedly connected to two corresponding front and rear connecting plates via its lower base. Connecting shafts are rotatably disposed on both the left and right sides of the fixed frame. Both connecting shafts are connected to the corresponding rotating shaft above via a sprocket set.

[0012] According to an advantageous embodiment, the base on the lower side of the drive motor is fixedly connected to the corresponding front and rear connecting plates by bolts and nuts, and the connecting plates are provided with a plurality of mounting holes along their length for bolts to pass through.

[0013] According to an advantageous embodiment, both ends of the rotating shaft movably pass through corresponding vertical plates and are fixedly connected to a propulsion blade assembly.

[0014] Compared with the prior art, the auxiliary limiting structure of the rail transit cable extrusion production line provided by the embodiments of the present invention has the following beneficial effects: the cloth roller one and cloth roller two in the limiting component replace the traditional stainless steel guide roller. Both cloth roller one and cloth roller two can be depressed after being pressed to form a concave surface that fits the cable surface, which expands the contact area with the cable, greatly reduces the local contact pressure of the cable, avoids cable deformation due to excessive local pressure, and ensures the final forming quality of the cable; at the same time, cloth roller one is actively rotated by the drive unit. Because the contact area between cloth roller one and the cable is increased after being depressed, it can better push the cable to move, play a boosting role, reduce the traction force required for the cable to move, prevent the cable from being stretched and deformed due to excessive traction force, and further improve the forming quality of the cable. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial cross-sectional perspective view of the three-dimensional structure of the present invention.

[0017] Figure 3 This is a front sectional planar structural diagram of the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the limiting component in this invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the downward pressure drive component in this invention.

[0020] The attached figures are labeled as follows: 1. Fixed guide rail; 2. Limiting component; 21. Mounting bracket; 211. Fixing sleeve; 212. Connecting plate; 213. Vertical plate; 214. Fixing frame; 22. Cloth roller one; 23. Angle adjustment part; 231. Rotating frame; 232. Downward driving component; 2321. Adjusting screw; 2322. Adjusting slider; 2323. Transmission plate; 24. Cloth roller two; 25. Driving part; 251. Rotating shaft; 252. Drive motor; 253. Connecting shaft; 254. Sprocket assembly; 3. Push blade assembly; 4. Cooling water tank. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5This application will be described in further detail.

[0022] Please refer to the following: Figure 1 An auxiliary limiting structure for a rail transit cable extrusion production line is installed on a cooling water tank 4 to limit the movement of cables within the tank. It includes two sets of fixed guide rails 1, which are respectively fixed to the inner walls of the left and right sides of the cooling water tank 4. Multiple sets of evenly distributed limiting components 2 are arranged between the two sets of fixed guide rails 1. The limiting components 2 are arranged along the length of the cooling water tank 4 to limit and guide the movement of the cables.

[0023] See Figures 1-4 The limiting component 2 includes a mounting bracket 21 connected to two fixed guide rails 1 on the left and right. The mounting bracket 21 includes two U-shaped fixing sleeves 211, which are fixedly mounted on the corresponding fixed guide rails 1. Two symmetrical, L-shaped connecting plates 212 are fixedly mounted on the lower side of each fixing sleeve 211. The ends of the horizontal sections of the two connecting plates 212 are jointly fixedly connected to inverted U-shaped upright plates 213. A fixing frame 214 is jointly fixedly mounted on the lower side of the two upright plates 213. A first cloth roller 22 is rotatably mounted on the fixing frame 214. Angle adjustment parts 23 are provided on both the two foremost upright plates 213 and the two rearmost upright plates 213, and second cloth rollers 24 are mounted on the angle adjustment parts 23. Both the foremost and rearmost mounting brackets 21 are provided with driving parts 25 for driving the corresponding first cloth roller 22 to rotate. Both the first cloth roller 22 and the second cloth roller 24 are made of flexible material and can deform under pressure.

[0024] In actual operation, multiple cloth rollers 22 support the cable along the cable's movement direction. The pressure of the cable on the cloth rollers 22 causes them to indent. Once the indentation reaches a certain level, the resulting concave surface of the cloth rollers 22 adheres to the cable surface, providing flexible support. The cloth rollers 22 are driven to rotate by the drive unit 25. Due to the increased contact area between the cloth rollers 22 and the cable, the active rotation of the cloth rollers 22 better assists in the cable's movement, reducing the traction force required for cable movement and preventing tensile deformation caused by excessive traction force. Simultaneously, at both ends of the cable in the cooling water tank 4, two cloth rollers 24 actively apply pressure, forming concave surfaces that contact the cable. This further limits the portion of the cable just entering the cooling water tank 4 and the portion about to exit, ensuring the cable can stably enter the cooling water tank 4 and smoothly proceed to the next process. Compared to the traditional method of limiting and guiding the cable using stainless steel guide rollers, this solution can not only provide stable guidance for the cable in the cooling water tank 4, but also allow the cloth rollers 22 and 24 to be pressed and indented when in contact with the cable, increasing the pressure area and greatly reducing the local contact pressure on the cable. This avoids the deformation problem caused by excessive local pressure on the cable during the limiting and guiding process.

[0025] See Figure 4 To control the depth of the cable inside the cooling water tank 4, multiple threaded grooves are provided on the outer sides of the two vertical sections of the upright plate 213 along its length. Locking bolts that are threadedly connected to the corresponding threaded grooves are rotatably installed on the connecting plate 212. The height of the cloth roller 22 is adjusted by adjusting the relative position between the connecting plate 212 and the upright plate 213, thereby adjusting the immersion depth of the cable according to the water depth in the cooling water tank 4.

[0026] See Figures 2-5 To adjust the pressure of the second cloth roller 24 pressing against the cable surface, the angle adjustment part 23 includes a T-shaped rotating frame 231 rotatably disposed between two vertical sections of the upright plate 213. The rotating frame 231 is rotatably connected to the second cloth roller 24. A downward pressure drive component 232 is provided on the upright plate 213. A sliding hole is provided on the upright plate 213. The downward pressure drive component 232 includes an adjusting screw 2321 rotatably disposed in the sliding hole. The lower end of the adjusting screw 2321 movably passes through the horizontal section of the upright plate 213 and is fixedly connected to an adjusting knob. An adjusting slider 2322 is threadedly connected to the adjusting screw 2321. The adjusting slider 2322 is slidably disposed in the sliding hole. A transmission plate 2323 is hinged between the adjusting slider 2322 and the rotating frame 231. The operator rotates the adjustment knob to make the adjustment screw 2321 rotate, which in turn moves the adjustment slider 2322, causing the transmission plate 2323 to move. The transmission plate 2323 pushes the rotating frame 231 to rotate, which in turn drives the cloth roller 24 to rotate and adjust the angle.

[0027] See Figure 2 and Figure 4 The drive unit 25 includes a rotating shaft 251 rotatably disposed between two corresponding left and right upright plates 213. One end of the rotating shaft 251 is fixedly connected to a drive motor 252. The drive motor 252 is fixedly connected to two corresponding front and rear connecting plates 212 via its lower base. Connecting shafts 253 are rotatably disposed on both sides of the fixing frame 214. Both connecting shafts 253 are connected to the corresponding upper rotating shaft 251 via a sprocket assembly 254. The rotating shaft 251 is driven to rotate by the drive motor 252, and with the cooperation of the sprocket assembly 254, the corresponding cloth roller 22 can rotate actively.

[0028] See Figure 4 The base on the lower side of the drive motor 252 is fixedly connected to the corresponding front and rear connecting plates 212 by bolts and nuts, and the connecting plates 212 have multiple mounting holes along their length for bolts to pass through. When the height of the cloth roller 22 is adjusted, the position of the drive motor 252 on the corresponding two connecting plates 212 is adjusted accordingly.

[0029] See Figure 4 Both ends of the rotating shaft 251 are movably connected through the corresponding vertical plate 213 and are fixedly connected to the pusher blade assembly 3. The pusher blades can rotate with the rotating shaft 251, thereby agitating the cooling water in the cooling water tank 4, accelerating the flow of water, and facilitating the cooling water's own heat dissipation and cooling.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An auxiliary limiting structure for a rail transit cable extrusion production line, used for limiting and guiding cables in a cooling water tank, characterized in that: It includes two sets of fixed guide rails, which are respectively fixed on the inner walls of the left and right sides of the cooling water tank. Between the two sets of fixed guide rails, there are multiple sets of limiting components evenly distributed front and back for flexible limiting and guiding. The limiting component includes a mounting frame connected to two fixed guide rails on the left and right. A cloth roller is rotatably mounted on the mounting frame. Two sets of angle adjustment parts are symmetrically arranged on the front and rear mounting frames. A cloth roller is mounted on the angle adjustment part. Multiple cloth rollers support the cable along the cable movement direction. The cloth rollers are formed by the pressure of the cable and form a concave surface that contacts the surface of the cable. The portions of the cable at both ends of the cooling water tank are actively pressed by two cloth rollers and form a concave surface that contacts the cable under the pressure. Both the frontmost and rearmost mounting brackets are equipped with drive units for driving the corresponding cloth rollers to rotate. The drive units drive the two cloth rollers on the frontmost and rearmost sides to rotate actively, thereby assisting the cables carried on the cloth rollers to move. The mounting frame includes two U-shaped fixing sleeves, which are fixedly mounted on corresponding fixed guide rails. Two connecting plates that are symmetrical and L-shaped are fixedly mounted on the lower side of the fixing sleeves. The ends of the horizontal sections of the two connecting plates are fixedly connected to an inverted U-shaped vertical plate. An angle adjustment part is mounted on the corresponding vertical plate. A fixing frame is fixedly mounted on the lower side of the two vertical plates. The cloth roller is rotatably connected to the corresponding fixing frame. The angle adjustment unit includes a rotating frame that is rotatably disposed between two vertical sections of the upright plate and is in the shape of a T. The rotating frame is rotatably connected to the second cloth roller. A downward driving component is provided on the upright plate. The upright plate has a sliding hole, and the downward driving component includes an adjusting screw that is rotatably disposed in the sliding hole. An adjusting slider is threadedly connected to the adjusting screw, and a transmission plate is hinged between the adjusting slider and the rotating frame.

2. The auxiliary limiting structure for a rail transit cable extrusion production line according to claim 1, characterized in that, The outer sides of the two vertical sections of the upright plate are provided with multiple threaded grooves along their length, and the connecting plate is provided with locking bolts that are threadedly connected to the corresponding threaded grooves.

3. The auxiliary limiting structure for a rail transit cable extrusion production line according to claim 1, characterized in that, The drive unit includes a rotating shaft rotatably disposed between two corresponding upright plates on the left and right. One end of the rotating shaft is fixedly connected to a drive motor. The drive motor is fixedly connected to two corresponding front and rear connecting plates through its lower base. Connecting shafts are rotatably disposed on both the left and right sides of the fixed frame. Both connecting shafts are connected to the corresponding rotating shaft above through a sprocket set.

4. The auxiliary limiting structure for a rail transit cable extrusion production line according to claim 3, characterized in that, The base on the lower side of the drive motor is fixedly connected to the corresponding front and rear connecting plates by bolts and nuts, and the connecting plates have multiple mounting holes along their length for bolts to pass through.

5. The auxiliary limiting structure for a rail transit cable extrusion production line according to claim 3, characterized in that, Both ends of the rotating shaft are movably connected through corresponding vertical plates and are fixedly connected to a set of propulsion blades that agitate cooling water to accelerate heat dissipation.

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