A cable hoist system guy device

Abstract

The application discloses a cable hoisting system supporting cable device and belongs to the technical field of hoisting equipment. The device comprises a top plate and a bottom plate. A traction support is arranged at the upper end of the top plate. A traction sheave for connecting a traction cable is arranged on the traction support. A plurality of hoisting support frames are arranged at the lower end of the bottom plate. A runner sheave for connecting a runner cable and a hoisting sheave for connecting a hoisting cable are arranged between adjacent hoisting support frames. A plurality of mounting plates are fixed between the top plate and the bottom plate. A load-bearing sheave assembly for connecting a load-bearing cable is arranged between adjacent mounting plates. The load-bearing sheave assembly comprises four load-bearing shafts arranged in a rectangular shape, a transmission structure for synchronously and reversely rotating vertically adjacent load-bearing shafts and a synchronous structure for synchronously and forwardly rotating horizontally adjacent load-bearing shafts. The device aims to solve the problem that the linear speeds of the load-bearing sheaves are inconsistent, which causes local relative sliding on the surface of the load-bearing cable and aggravates the wear of the load-bearing cable.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, specifically relating to a cable-stayed hoisting system support device. Background Technology

[0002] Long-span bridges are mainly constructed using cable cranes. Specifically, a cable crane consists of a load-bearing cable system and a trolley system (composed of a traction cable system and a lifting cable system). The lifting cable system lifts heavy objects by connecting the hook assembly to the lifting cable. The two ends of the load-bearing cable pass through the saddles of the two end towers and are anchored to the ground. The load-bearing cable also provides the running track for the trolley system and the support cables. The support cables are evenly distributed along the length of the main beam of the crane, which can evenly distribute the load of the heavy objects onto multiple load-bearing cables. By fixing the position and direction of the cables, the swing range of the crane is limited, making the crane stable and safe during operation.

[0003] In existing technology, support cables are positioned between two cable towers, with each support cable connected to a corresponding traction cable. A trolley directly pushes or pulls each support cable along the load-bearing cable. During travel, multiple load-bearing pulleys are installed on the support cables, and the friction between these pulleys and their corresponding load-bearing cables causes them to rotate, thus reducing wear on the load-bearing cables. However, due to factors such as machining accuracy errors, uneven load distribution, and changes in the sag of the load-bearing cables, the linear velocities of the individual pulleys are inconsistent, leading to localized relative slippage (i.e., "slippage") with the surface of the load-bearing cable. This slippage generates shear stress on the surface of the load-bearing cable, causing adhesive wear and abrasive wear. Summary of the Invention

[0004] In view of this, the present invention discloses a cable-stayed hoisting system support device, the purpose of which is to solve the problem that the inconsistent linear speed of each load-bearing pulley leads to local relative slippage with the surface of the load-bearing cable, which aggravates the wear of the load-bearing cable.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A cable-stayed hoisting system includes a top plate and a bottom plate. A traction bracket is mounted on the upper end of the top plate, and a traction pulley for connecting a traction cable is mounted on the traction bracket. Several lifting support frames are mounted on the lower end of the bottom plate. Between adjacent lifting support frames, there are trolley pulleys for connecting trolley cables and lifting pulleys for connecting lifting cables. Several mounting plates are fixed between the top and bottom plates. Between adjacent mounting plates, there are load-bearing pulley assemblies for connecting load-bearing cables. Each load-bearing pulley assembly includes four rectangularly distributed load-bearing shafts, a transmission structure for synchronously rotating vertically adjacent load-bearing shafts in opposite directions, and a synchronization structure for synchronously rotating horizontally adjacent load-bearing shafts in the same direction. Both ends of each load-bearing shaft are rotatably connected to adjacent mounting plates, and each load-bearing shaft has a load-bearing pulley coaxially fixed to it for connection with a load-bearing cable.

[0006] In this design, the load-bearing cable passes between vertically adjacent load-bearing pulleys in the same load-bearing pulley assembly. When the support cable moves, the friction between the load-bearing cables drives the corresponding load-bearing pulleys to rotate. The transmission structure causes vertically adjacent load-bearing shafts in the same load-bearing pulley assembly to rotate synchronously in opposite directions, and in conjunction with the transmission structure, causes horizontally adjacent load-bearing shafts to rotate synchronously in the same direction. This ensures that the load-bearing pulleys in the same load-bearing assembly rotate at the same speed, meaning that the linear velocity of each load-bearing pulley in the same load-bearing pulley assembly is consistent. Compared to existing technologies, this avoids local relative slippage between the load-bearing pulleys and the surface of the load-bearing cable due to different linear velocities, reduces wear on the load-bearing cable from the load-bearing pulleys, and extends the service life of the load-bearing cable.

[0007] Furthermore, the transmission structure includes four reversing gears, which are coaxially fixedly connected to the corresponding load-bearing shafts, and vertically adjacent reversing gears mesh with each other; the synchronization structure includes a mounting bracket fixed to the base plate, on which a transmission shaft parallel to the load-bearing cable is rotatably connected, and both ends of the transmission shaft are coaxially fixed with driving bevel gears, and the load-bearing shafts near the base plate are coaxially fixed with driven bevel gears that mesh with the corresponding driving bevel gears, and the conical surfaces of adjacent driven bevel gears face opposite directions.

[0008] In this design, the meshing of vertically adjacent reversing gears ensures that the vertically adjacent load-bearing shafts rotate synchronously in the same direction. Since the conical surfaces of the adjacent driven bevel gears face in the opposite direction, the drive shaft meshes with the driven bevel gear, causing the two load-bearing shafts near the base plate to rotate synchronously in opposite directions. The entire structure is simple, reliable, and easy to maintain in the future.

[0009] Furthermore, the pulley assembly also includes two fixed supports connected to the base plate, both located on the side of the load-bearing pulley away from the drive shaft. Each fixed support has an annular block for the corresponding load-bearing cable to pass through. The annular block has several cavities inside, one side of which is connected to a storage cavity for storing lubricant. Each cavity has a first one-way valve to restrict lubricant flow from the storage cavity into the cavity. Each cavity also has an overflow hole communicating with the inner wall of the annular block, and a second one-way valve is provided at the overflow hole for flow from the cavity to the inner wall of the annular block. Next to the annular block, an annular movable block is provided. Each movable block is fixed with a slider that extends into and slides into the corresponding cavity, and an elastic reset component is provided between the slider and the cavity. Each movable block is fixed with a push rod parallel to the transmission shaft. Each push rod end is hinged with a swing rod that swings up and down, and a torsion spring is provided at the hinge. A limiting block that fits with the swing rod is provided on the upper end of the side wall of the push rod. An annular drive block is coaxially provided on the side wall of the reversing gear adjacent to the base plate. Several arc-shaped protrusions that fit with the end of the swing rod are provided on the periphery of the drive block.

[0010] In this scheme, when the support cable moves, the drive blocks at both ends of the support cable rotate synchronously and in the same direction with the corresponding reversing gears; the drive block located at the forward end of the support cable rotates in the forward direction, and when it rotates, it applies a downward force to the swing rod, which then deflects downward. The drive block at the tail end of the support rotates in the opposite direction, applying an upward force to the swing rod. Since the swing rod is restricted by the limiting block and cannot swing, this force is converted into a pushing force that moves the swing rod and push rod towards the corresponding annular block. Once the swing rod disengages from the arc-shaped protrusion, the swing rod and push rod move away from the annular block under the action of the elastic reset element, causing them to reciprocate horizontally. This causes the moving block to drive the slider to reciprocate synchronously within the cavity. When the moving block moves away from the annular block, the pressure within the cavity decreases, allowing the lubricant in the corresponding storage cavity to flow into the cavity through the first one-way valve. When the moving block moves towards the annular block, the pressure within the cavity increases, causing the lubricant in the cavity to be pumped out through the second one-way valve and overflow hole to the load-bearing cable for lubrication, reducing wear on the load-bearing cable from the load-bearing pulley. Furthermore, in this scheme, when the friction between the load-bearing cable and the load-bearing pulley is large, the rotation speed of the load-bearing pulley is faster, resulting in a faster pumping interval for the lubricant and more lubricant being applied to the load-bearing cable; when the friction between the load-bearing cable and the load-bearing pulley decreases due to the reduction of the lubricant, the rotation speed of the load-bearing pulley decreases, resulting in a shorter pumping interval for the lubricant and a reduced amount of lubricant delivered.

[0011] Furthermore, the limiting block is slidably connected to the pushing rod along the axial direction of the pushing rod, and the pushing rod is provided with a telescopic rod for driving the limiting block.

[0012] Furthermore, the length of the push rod is adjustable.

[0013] Furthermore, each of the overflow holes is provided with bristles.

[0014] Furthermore, a rubber layer is provided on the periphery of the drive block.

[0015] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the load-bearing pulley assembly in an embodiment of the present invention; Figure 3 for Figure 2Enlarged view of point A in the middle; Figure 4 This is a longitudinal sectional view of the annular block in an embodiment of the present invention.

[0017] The following components are labeled in the attached diagram: Top plate 1, Bottom plate 2, Traction bracket 3, Traction pulley 4, Traction cable 5, Support frame 6, Carriage pulley 7, Carriage cable 8, Lifting pulley 9, Lifting cable 10, Mounting plate 11, Load-bearing cable 12, Load-bearing pulley 13, Load-bearing shaft 14, Reversing gear 15, Mounting bracket 16, Transmission shaft 17, Driving bevel gear 18, Driven bevel gear 19, Fixed bracket 20, Annular block 21, Storage cavity 22, First one-way valve 23, Second one-way valve 24, Moving block 25, Sliding block 26, Elastic reset component 27, Push rod 28, Swing rod 29, Limiting block 30, Drive block 31, Telescopic rod 32, Brush bristles 33. Detailed Implementation

[0018] like Figures 1-4 As shown: A cable-stayed hoisting system includes a top plate 1 and a bottom plate 2. A traction bracket 3 is mounted on the upper end of the top plate 1, and a traction pulley 4 for connecting a traction cable 5 is mounted on the traction bracket 3. Several lifting support frames are mounted on the lower end of the bottom plate 2. Between adjacent lifting support frames, a trolley pulley 7 for connecting a trolley cable 8 and a lifting pulley 9 for connecting a lifting cable 10 are provided. Several mounting plates 11 are fixed between the top plate 1 and the bottom plate 2. Between adjacent mounting plates 11, a load-bearing pulley 13 assembly for connecting a load-bearing cable 12 is provided. The load-bearing pulley 13 assembly includes four rectangularly distributed load-bearing shafts 14, a transmission structure for synchronously rotating vertically adjacent load-bearing shafts 14 in opposite directions, and a synchronization structure for synchronously rotating horizontally adjacent load-bearing shafts 14 in the same direction. Both ends of each load-bearing shaft 14 are rotatably connected to adjacent mounting plates 11, and each load-bearing shaft 14 is coaxially fixed with a load-bearing pulley 13 connected to a load-bearing cable 12.

[0019] In this design, the load-bearing cable 12 passes between vertically adjacent load-bearing pulleys 13 in the same load-bearing pulley 13 assembly. When the support cable moves, the friction between the load-bearing cables 12 drives the corresponding load-bearing pulley 13 to rotate. The transmission structure causes the vertically adjacent load-bearing shafts 14 in the same load-bearing pulley 13 assembly to rotate synchronously in opposite directions. In conjunction with the transmission structure, the horizontally adjacent load-bearing shafts 14 rotate synchronously in the same direction. This results in the load-bearing pulleys 13 in the same load-bearing assembly rotating at the same speed. That is, the linear velocity of each load-bearing pulley 13 in the same load-bearing pulley 13 assembly is consistent. Compared with the prior art, this avoids local relative slippage between the load-bearing pulleys 13 and the surface of the load-bearing cable 12 due to different linear velocities of each load-bearing pulley 13, reduces wear on the load-bearing cable 12 by the load-bearing pulleys 13, and extends the service life of the load-bearing cable 12.

[0020] Furthermore, the transmission structure includes four reversing gears 15, which are coaxially fixedly connected to the corresponding load-bearing shafts 14, and the vertically adjacent reversing gears 15 mesh with each other; the synchronization structure includes a mounting bracket 16 fixed on the base plate 2, and a transmission shaft 17 parallel to the load-bearing cable 12 is rotatably connected to the mounting bracket 16. Both ends of the transmission shaft 17 are coaxially fixed with driving bevel gears 18, and the load-bearing shafts 14 near the base plate 2 are coaxially fixed with driven bevel gears 19 that mesh with the corresponding driving bevel gears 18, and the conical surfaces of adjacent driven bevel gears 19 face opposite directions.

[0021] In this scheme, the vertically adjacent reversing gears 15 mesh to ensure that the vertically adjacent load-bearing shafts 14 rotate in the same direction and synchronously. Since the conical surfaces of the adjacent driven bevel gears 19 face in the opposite direction, the transmission shaft 17 meshes with the driven bevel gear 19 through the driving bevel gear 18, so that the two load-bearing shafts 14 near the base plate 2 rotate synchronously in opposite directions. The whole structure is simple and reliable, and easy to maintain later.

[0022] Furthermore, the pulley assembly also includes two fixed supports 20 connected to the base plate 2, and the fixed supports 20 are all located on the side of the load-bearing pulley 13 away from the drive shaft 17. Each fixed support 20 has an annular block 21 for the corresponding load-bearing cable 12 to pass through. The annular block 21 has several cavities inside, and one side of each cavity is connected to a storage cavity 22 for storing lubricant. Each cavity has a first one-way valve 23 that restricts the flow of lubricant from the storage cavity 22 into the cavity. Each cavity also has an overflow hole communicating with the inner wall of the annular block 21, and a second one-way valve 24 is provided at the overflow hole for the lubricant to flow from the cavity to the inner wall of the annular block 21. A ring-shaped movable block 25 is provided next to the 21. Each movable block 25 is fixed with a slider 26 that extends into and slides into the corresponding cavity. An elastic reset member 27 is provided between the slider 26 and the cavity. Each movable block 25 is fixed with a push rod 28 parallel to the transmission shaft 17. Each push rod 28 is hinged to a swing rod 29 that swings up and down. A torsion spring is provided at the hinge. A limiting block 30 that fits against the swing rod 29 is provided on the upper side wall of the push rod 28. A ring-shaped drive block 31 is coaxially provided on the side wall of the reversing gear 15 adjacent to the base plate 2. Several arc-shaped protrusions that fit against the ends of the swing rod 29 are provided on the periphery of the drive block 31.

[0023] In this scheme, when the support cable moves, the drive blocks 31 at both ends of the support cable rotate synchronously and in the same direction with the corresponding reversing gears 15; the drive block 31 located at the forward end of the support cable rotates in the forward direction, and when it rotates, it applies a downward force to the swing rod 29, which then deflects downward. The drive block 31 at the tail end of the support rotates in the opposite direction, applying an upward force to the swing rod 29. The swing rod 29 is restricted by the limiting block 30 and cannot swing, thus converting the force into pushing the swing rod 29 and the push rod 28 toward the corresponding annular block 21. When the swing rod 29 disengages from the arc-shaped protrusion, the swing rod 29 and the push rod 28 move away from the annular block 21 under the action of the elastic reset member 27, causing the swing rod 29 and the push rod 28 to reciprocate horizontally. This causes the moving block 25 to drive the slider 26 to reciprocate synchronously in the cavity. When the moving block 25 moves away from the annular block 21, the pressure in the cavity decreases, causing the lubricant in the corresponding storage cavity 22 to flow into the cavity through the first one-way valve 23. When the moving block 25 moves toward the annular block 21, the pressure in the cavity increases, causing the lubricant in the cavity to be pumped out through the second one-way valve 24 and the overflow hole to lubricate the load-bearing cable 12, reducing the wear of the load-bearing pulley 13 on the load-bearing cable 12. Furthermore, in this scheme, when the friction between the load-bearing cable 12 and the load-bearing pulley 13 is large, the rotation speed of the load-bearing pulley 13 is faster, resulting in a faster pumping interval for the lubricant and more lubricant being applied to the load-bearing cable 12; when the friction between the load-bearing cable 12 and the load-bearing pulley 13 decreases due to the reduction of the lubricant, the rotation speed of the load-bearing pulley 13 decreases, resulting in a shorter pumping interval for the lubricant and a reduced amount of lubricant delivered.

[0024] Furthermore, the limiting block 30 is slidably connected to the pushing rod 28 along the axial direction of the pushing rod 28, and the pushing rod 28 is provided with a telescopic rod 32 for driving the limiting block 30.

[0025] When the lubricant on the load-bearing cable 12 is sufficient to meet the lubrication requirements, the contraction of the telescopic rod 32 causes the limiting block 30 to disengage from the swing rod 29, thus stopping the lubrication of the load-bearing cable 12.

[0026] Furthermore, the length of the push rod 28 is adjustable. In this embodiment, the push rod 28 is an electric telescopic rod 32, which is a conventional technical means and therefore not described in detail.

[0027] By adjusting the length of the push rod 28, the pushing distance of the arc-shaped protrusion on the push rod 28 is changed, thereby changing the pumping volume of lubricant per cycle.

[0028] Furthermore, each of the overflow holes is provided with bristles 33.

[0029] By setting bristles 33, the flow of lubricant is guided, preventing lubricant from flowing erratically and being wasted.

[0030] Furthermore, a rubber layer is provided around the periphery of the drive block 31.

[0031] By adding a rubber layer, the wear caused by the drive block 31 on the swing arm 29 is reduced.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A cable-stayed hoisting system support device, characterized in that: The system includes a top plate and a bottom plate. A traction bracket is mounted on the upper end of the top plate, and a traction pulley for connecting the traction cable is mounted on the traction bracket. Several lifting support frames are mounted on the lower end of the bottom plate. Between adjacent lifting support frames, there are trolley pulleys for connecting the trolley cable and lifting pulleys for connecting the lifting cable. Several mounting plates are fixed between the top plate and the bottom plate. Between adjacent mounting plates, there are load-bearing pulley assemblies for connecting the load-bearing cable. Each load-bearing pulley assembly includes four rectangularly distributed load-bearing shafts, a transmission structure that causes vertically adjacent load-bearing shafts to rotate synchronously in opposite directions, and a synchronization structure that causes horizontally adjacent load-bearing shafts to rotate synchronously in the same direction. Both ends of each load-bearing shaft are rotatably connected to adjacent mounting plates, and each load-bearing shaft has a load-bearing pulley coaxially fixed to it for connection with the load-bearing cable.

2. The cable-stayed hoisting system support device according to claim 1, characterized in that: The transmission structure includes four reversing gears, which are coaxially fixedly connected to the corresponding load-bearing shafts, and vertically adjacent reversing gears mesh with each other; the synchronization structure includes a mounting bracket fixed to the base plate, and a transmission shaft parallel to the load-bearing cable is rotatably connected to the mounting bracket. Both ends of the transmission shaft are coaxially fixed with driving bevel gears, and the load-bearing shafts near the base plate are coaxially fixed with driven bevel gears that mesh with the corresponding driving bevel gears, and the conical surfaces of adjacent driven bevel gears face opposite directions.

3. The cable-stayed hoisting system support device according to claim 2, characterized in that: The pulley assembly also includes two fixed supports connected to the base plate, both located on the side of the load-bearing pulley away from the drive shaft. Each fixed support has an annular block for the corresponding load-bearing cable to pass through. The annular block has several cavities inside, one side of which is connected to a storage cavity for storing lubricant. Each cavity has a first one-way valve that restricts lubricant flow from the storage cavity into the cavity. Each cavity also has an overflow hole communicating with the inner wall of the annular block, and a second one-way valve is provided at the overflow hole for flow from the cavity to the inner wall of the annular block. Next to the shaped block, there is a ring-shaped movable block. Each movable block is fixed with a slider that extends into and slides into the corresponding cavity. An elastic reset element is provided between the slider and the cavity. Each movable block is fixed with a push rod parallel to the transmission shaft. Each push rod end is hinged with a swing rod that swings up and down. A torsion spring is provided at the hinge. A limiting block that fits with the swing rod is provided on the upper end of the side wall of the push rod. A ring-shaped drive block is coaxially provided on the side wall of the reversing gear adjacent to the base plate. Several arc-shaped protrusions that fit with the end of the swing rod are provided on the periphery of the drive block.

4. The cable-stayed hoisting system support device according to claim 3, characterized in that: The limiting block is slidably connected to the pushing rod along the axial direction of the pushing rod, and the pushing rod is provided with a telescopic rod for driving the limiting block.

5. The cable-stayed hoisting system support device according to claim 4, characterized in that: The length of the push rod is adjustable.

6. The cable-stayed hoisting system support device according to claim 5, characterized in that: Each overflow hole is equipped with bristles.

7. The cable-stayed hoisting system support device according to claim 6, characterized in that: A rubber layer is provided on the periphery of the drive block.

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