A floating dock upper traction system support trolley
By designing a support trolley in the floating dock traction system, increasing the fulcrum of the wire rope, and using a locking mechanism to raise the position of the fulcrum, combined with clamping and sliding support states, the problems of wire rope sagging and vibration were solved, and the stability and safety of the traction process were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- COSCO ZHOUSHAN SHIPYARD
- Filing Date
- 2026-06-03
- Publication Date
- 2026-07-03
AI Technical Summary
In existing floating dock traction systems, the steel wire ropes increase in length due to prolonged tension, and their deflection increases due to their own weight, making them difficult to control. This leads to the risk of steel wire rope sagging and loss of control, especially with large-diameter steel wire ropes, where the tensioning device is difficult to adjust, and mechanical vibration causes the steel wire rope to swing.
Design a trolley for a traction system on a floating dock. The trolley increases the fulcrum of the wire rope through the support mechanism and raises the position of the fulcrum by the locking mechanism. It combines clamping and sliding support states and is equipped with pressure rollers, buffer springs and moving plates to stabilize the wire rope. A continuous elbow plate is added to the bottom of the T-shaped guide rail to prevent the trolley from tipping over.
It effectively reduces wire rope deflection, prevents sagging and loss of control, stabilizes the traction process, prevents wire rope swaying caused by mechanical vibration, and meets design strength requirements.
Smart Images
Figure CN122324221A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of traction system technology on floating docks, specifically to a traction system support trolley on a floating dock. Background Technology
[0002] Before entering the floating dock, the vessel's mooring lines are connected to the hooks of a traction trolley on the dock wall. The traction trolley on the side of the floating dock guides the vessel into the dock and to its designated position. Once the floating dock has discharged water from its ballast tanks and surfaced, divers check the vessel's position before it is lowered onto the dock. The vessel's position is then adjusted using the mooring winches on the floating dock to ensure accurate placement. The traction system plays a crucial role during the docking process.
[0003] A typical floating dock traction system mainly consists of a friction winch, traction wire rope, traction trolley, trolley rails, and multiple fixed pulleys. The friction winch's grooved drum has multiple turns of traction wire rope wound around it. The friction on the drum drives the relative movement of the traction wire rope. The two ends of the traction wire rope are connected to the fixed shafts at both ends of the traction trolley via collars and rope clamps. When the friction winch drum rotates, it drives the traction trolley via the traction wire rope. The forward and reverse rotation of the friction winch drum causes the traction trolley to move forward and backward along the rails. The mooring lines for vessels undergoing docking are connected to the traction trolley, which then pulls the vessel into and out of the dock. During setup, the traction trolley and guide rails are positioned on the top deck of the floating dock, with the traction trolley guide rails running the length of the floating dock.
[0004] When initially installing the wire rope, the tension can be adjusted by adjusting the tensioning device on the top pulley. However, after prolonged operation, the wire rope's length will slowly increase due to continuous tension, eventually exceeding the adjustment range of the tensioning device at the pulley position. At this point, the deflection caused by the wire rope's own weight becomes difficult to control, leading to a slow sag. Eventually, the wire rope will fall onto the guide rail panel and drag along it, posing a risk of loss of control. Furthermore, when using a large-diameter wire rope, achieving proper tension during installation is challenging. Simultaneously, the wire rope's own weight cannot be counteracted by the pulley tensioning device, causing the traction wire rope to continue dragging along the guide rail surface. Summary of the Invention
[0005] To address the aforementioned issues, a support trolley for a traction system on a floating dock is provided. The support mechanism on the trolley increases the fulcrum on the traction wire rope, and a locking mechanism elevates the fulcrum position. The locking mechanism, in conjunction with the support mechanism, allows for both clamping and sliding support states for the traction wire rope, facilitating traction operations. The inclusion of pressure rollers, connecting plates, buffer springs, and a moving plate prevents the traction wire rope from swaying due to vibrations in the traction machinery. A continuous elbow plate is added to the bottom of the T-shaped guide rail to prevent the support trolley from tipping over, meeting design strength requirements.
[0006] To address the problems of the prior art, the present invention provides a trolley for a traction system on a floating dock, which can support the traction steel wire rope along the extension direction of the T-shaped guide rail. The trolley includes a trolley frame and a guide trolley mechanism arranged at the trolley frame and along the extension direction of the T-shaped guide rail.
[0007] It also includes a locking mechanism located directly above the crane frame. The locking mechanism includes a handwheel and two sets of clamping plates symmetrically arranged in a vertical plane about the central axis of the crane frame. In each set of clamping plates, two clamping plates arranged along the length of the crane frame are rotatably connected to a plate shaft and a mounting shaft. Each clamping plate is recessed with a clamping groove. The handwheel is provided with a bidirectional thread on its outer side. Each plate shaft has a locking eye that engages with the bidirectional thread on its outer side through the middle of the handwheel along the extension direction of the handwheel.
[0008] Mounting plates are symmetrically arranged on the opposite sides of the two sets of clamping plates. The bottom of the mounting plates is fixedly connected to the crane frame. Each clamping plate is rotatably connected to the mounting plate via a mounting shaft.
[0009] It also includes a support mechanism located above the overhead frame and in front of and behind the locking mechanism.
[0010] Preferably, the two ends of the traveling frame are equipped with upper vertical traveling wheels that contact the upper surface of the T-shaped guide rail. The bottom of the traveling frame is symmetrically provided with two sets of horizontal traveling wheels and a set of continuous elbow plates about the plane containing its central axis. The outer walls of each set of horizontal traveling wheels and each set of continuous elbow plates are in contact with the outer walls of both sides of the T-shaped guide rail and are clamped on both sides of the T-shaped guide rail.
[0011] Preferably, each of the continuous elbow plates is provided with a positioning shaft and a limiting shaft. The positioning shaft is located on both sides of the head of the T-shaped guide rail, and the limiting shaft is located below the head of the T-shaped guide rail. The upper vertical traveling wheel, the horizontal traveling wheel, the continuous elbow plate, the positioning shaft, and the limiting shaft together constitute the guiding travel mechanism.
[0012] Preferably, the support mechanism includes a guide wheel and a support plate located on both sides of the guide wheel and rotatably connected to the guide wheel. The bottom of the support plate is fixedly connected to the upper surface of the crane frame, and the top of the guide wheel is lower than the bottom of the clamping groove.
[0013] Preferably, a pressure roller is also provided directly above the guide wheel. The pressure roller is located in front of the locking mechanism. Connecting plates are provided on both sides of the pressure roller, and the lower end of the connecting plate is fixedly connected to the support plate.
[0014] Preferably, the connecting plate has a vertically opened groove at the bottom, and the groove is equipped with a buffer spring and a moving plate.
[0015] Preferably, the two ends of the buffer spring are connected to the inner wall of the top of the chute and the top of the moving plate, respectively, and the moving plate extends vertically downward to the end that passes through the chute and the pressure roller.
[0016] The advantages of this invention compared to the prior art are:
[0017] 1. By increasing the fulcrum on the traction wire rope through the support mechanism on the trolley and raising its fulcrum position using a locking mechanism, some of the deflection problems caused by the self-weight of the traction wire rope are reduced and offset, thereby preventing the traction wire rope from drooping to the T-shaped guide rail panel due to deflection.
[0018] 2. Simultaneously, the locking mechanism, in conjunction with the support mechanism, can achieve two support states for the traction wire rope: clamping support and sliding support, facilitating the traction operation of the wire rope. The design of the pressure roller, connecting plate, buffer spring, and moving plate can prevent the traction wire rope from swinging significantly due to vibrations of the traction machinery during the traction process.
[0019] 3. A continuous elbow plate is added to the bottom of the T-shaped guide rail to prevent the trolley from tipping over and to meet the design strength requirements. Attached Figure Description
[0020] Figure 1 This is a front-view three-dimensional structural diagram of a traction system supporting a trolley on a floating dock.
[0021] Figure 2 This is a three-dimensional structural diagram of a traction system supporting a trolley on a floating dock, viewed from below.
[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the trolley frame supporting the traction system on a floating dock.
[0023] Figure 4 This is a three-dimensional structural diagram of the locking mechanism for a trolley supporting a traction system on a floating dock.
[0024] Figure 5This is a schematic diagram of the three-dimensional cross-sectional structure of the locking mechanism of the trolley supporting the traction system on a floating dock.
[0025] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the trolley frame supporting the traction system on a floating dock.
[0026] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the connecting plate of the traction system support trolley on a floating dock.
[0027] The numbers in the diagram are as follows: 1. Overhead frame; 1a. Mounting plate; 1b. Upper vertical travel wheel; 1c. Horizontal travel wheel; 1d. Continuous elbow plate; 1d1. Positioning shaft; 1d2. Limiting shaft; 2. Handwheel; 3. Clamping plate; 3a. Plate shaft; 3b. Mounting shaft; 4. Guide wheel; 5. Support plate; 6. Pressure roller; 7. Connecting plate; 7a. Buffer spring; 7b. Moving plate. Detailed Implementation
[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0029] See Figure 1-3 As shown, a trolley supporting a traction system on a floating dock can support the traction steel wire rope along the extension direction of the T-shaped guide rail. It includes a trolley frame 1 and a guide trolley mechanism arranged at the trolley frame 1 and along the extension direction of the T-shaped guide rail.
[0030] It should be noted that the guiding trolley mechanism is the component that moves the trolley frame 1 along the T-shaped guide rail. It cooperates with the T-shaped guide rail to provide guidance for the movement of the trolley frame 1 and ensures the stability of the trolley frame 1 when it moves.
[0031] See Figure 1 and Figure 4-6 As shown, it also includes a locking mechanism located directly above the crane frame 1. The locking mechanism includes a handwheel 2 and two sets of clamping plates 3 symmetrically arranged in a vertical plane about the central axis of the crane frame 1. In each set of clamping plates 3, two clamping plates 3 arranged along the length direction of the crane frame 1 are rotatably connected to a plate shaft 3a and a mounting shaft 3b. Each clamping plate 3 is recessed with a clamping groove. The handwheel 2 is provided with a bidirectional thread on its outer side. Each plate shaft 3a has a locking eye that engages with the bidirectional thread on its outer side through the middle part along the extension direction of the handwheel 2.
[0032] It should be noted that when using the device, the traction wire rope is placed in the groove of the clamping plate 3, and the handwheel 2 is turned. The handwheel 2, through the double-threaded hole on the outside and the locking eye threads opened in the two rotatable plate shafts 3a, drives the two sets of clamping plates 3 to close. During the closing process, the wire rope is squeezed and pushed to rise, thereby raising the fulcrum position of the traction wire rope.
[0033] See Figure 3 and Figure 6 As shown, mounting plates 1a are symmetrically arranged on the opposite sides of the two sets of clamping plates 3. The bottom of the mounting plate 1a is fixedly connected to the crane frame 1. Each clamping plate 3 is rotatably connected to the mounting plate 1a through a mounting shaft 3b.
[0034] It also includes a support mechanism located above the overhead frame 1 and on the front and rear sides of the locking mechanism.
[0035] It should be noted that the mounting plate 1a and mounting shaft 3b are components used to provide rotational support for the clamping plate 3. The support mechanism is a component used to directly support the traction wire rope.
[0036] See Figure 1-3 and Figure 5 As shown, the two ends of the traveling frame 1 are equipped with upper vertical traveling wheels 1b that contact the upper surface of the T-shaped guide rail. The bottom of the traveling frame 1 is symmetrically arranged with two sets of horizontal traveling wheels 1c and a set of continuous elbow plates 1d about the plane where its central axis is located. The outer wall of each set of horizontal traveling wheels 1c and the outer wall of each set of continuous elbow plates 1d are in contact with the outer walls on both sides of the T-shaped guide rail and are clamped on both sides of the T-shaped guide rail.
[0037] It should be noted that the upper vertical traveling wheel 1b is used to ensure smooth sliding of the top of the traveling frame 1. The horizontal traveling wheel 1c and the continuous elbow plate 1d are used to clamp and roll the left and right sides of the T-shaped guide rail to prevent the traveling frame 1 from tilting during travel.
[0038] See Figure 5 As shown, each of the continuous elbow plates 1d is provided with a positioning shaft 1d1 and a limiting shaft 1d2. The positioning shaft 1d1 is located on both sides of the head of the T-shaped guide rail, and the limiting shaft 1d2 is located below the head of the T-shaped guide rail. The upper vertical traveling wheel 1b, the horizontal traveling wheel 1c, the continuous elbow plate 1d, the positioning shaft 1d1 and the limiting shaft 1d2 together constitute the guiding trolley mechanism.
[0039] It should be noted that the positioning shaft 1d1 is a component that limits the crane frame 1 to the T-shaped guide rail by pressing against the outer wall of the T-shaped guide rail, preventing it from sliding further. The positioning shaft 1d1 can be made by using a bolt and threaded groove, and the positioning effect is achieved by rotating the bolt to push it against the outer wall of the T-shaped guide rail. The limiting shaft 1d2 cooperates with the upper vertical travel wheel 1b to form an upper and lower clamp on the head of the T-shaped guide rail, further improving the stability of the crane frame 1 during operation.
[0040] See Figure 1 and Figure 6 As shown, the support mechanism includes a guide wheel 4 and a support plate 5 located on both sides of the guide wheel 4 and rotatably connected to the guide wheel 4. The bottom of the support plate 5 is fixedly connected to the upper surface of the crane frame 1, and the top of the guide wheel 4 is lower than the bottom of the clamping groove.
[0041] It should be noted that when the locking mechanism is no longer rigidly clamping the traction wire rope and the positioning shaft 1d1 is in contact with the T-shaped guide rail, the traction wire rope will be supported by the guide wheel 4 and will slide relative to the guide wheel 4 during winding and unwinding. When the locking mechanism clamps the traction wire rope and the positioning shaft 1d1 is no longer in contact with the T-shaped guide rail, the traction wire rope support trolley will move synchronously with the traction wire rope.
[0042] See Figure 1 and Figure 6 As shown, a pressure roller 6 is also provided directly above the guide wheel 4. The pressure roller 6 is located in front of the locking mechanism. Connecting plates 7 are provided on both sides of the pressure roller 6. The lower end of the connecting plate 7 is fixedly connected to the support plate 5.
[0043] It should be noted that the pressure roller 6 is used in conjunction with the guide wheel 4 to achieve flexible clamping of the traction wire rope.
[0044] See Figure 6 and Figure 7 As shown, the connecting plate 7 has a vertically open groove at the bottom, and the groove is equipped with a buffer spring 7a and a moving plate 7b.
[0045] The two ends of the buffer spring 7a are respectively connected to the inner wall of the top of the chute and the top of the moving plate 7b, and the moving plate 7b extends vertically downward to the end of the chute and the pressure roller 6 for hoisting.
[0046] It should be noted that the equipment used for raising and lowering the traction wire rope will experience mechanical vibrations during use. These vibrations, transmitted to the traction wire rope, will cause it to bounce and swing. When the traction wire rope bounces and swings, it will push the pressure roller 6 upward. At this time, the bouncing force of the traction wire rope will be absorbed and offset by the pressure roller 6, the connecting plate 7 that pushes the pressure roller 6 downward, and the buffer spring 7a, thereby making the traction wire rope more stable when pulling the ship.
[0047] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims
1. A floating dock upper traction system support trolley, which can support the traction steel wire along the extension direction of the length of the T-shaped guide rail, comprising a travelling crane frame (1), characterized in that, It also includes a guide crane mechanism that is installed at the crane frame (1) and arranged along the extension direction of the T-shaped guide rail; It also includes a locking mechanism located directly above the crane frame (1). The locking mechanism includes a handwheel (2) and two sets of clamping plates (3) symmetrically arranged on the vertical plane about the central axis of the crane frame (1). In each set of clamping plates (3), the two clamping plates (3) arranged along the length direction of the crane frame (1) are rotatably connected to a plate shaft (3a) and a mounting shaft (3b). Each clamping plate (3) is recessed with a clamping groove. The handwheel (2) is provided with a bidirectional thread on the outside. Each plate shaft (3a) has a locking eye that engages with the bidirectional thread on its outside through the middle along the extension direction of the handwheel (2). Two sets of clamps (3) are symmetrically provided with mounting plates (1a) on the side away from each other. The bottom of the mounting plate (1a) is fixedly connected to the crane frame (1). Each clamp (3) is rotatably connected to the mounting plate (1a) through a mounting shaft (3b). It also includes a support mechanism located above the overhead frame (1) and on the front and rear sides of the locking mechanism.
2. A floating dock upper traction system support trolley according to claim 1, characterized in that, The gantry frame (1) is equipped with upper vertical traveling wheels (1b) that are in contact with the upper surface of the T-shaped guide rail at both ends. The bottom of the gantry frame (1) is symmetrically provided with two sets of horizontal traveling wheels (1c) and a set of continuous elbow plates (1d) about the plane containing its central axis. The outer walls of each set of horizontal traveling wheels (1c) and each set of continuous elbow plates (1d) are in contact with the outer walls on both sides of the T-shaped guide rail and are clamped on both sides of the T-shaped guide rail.
3. A floating dock upper traction system support trolley according to claim 2, characterized in that Each set of continuous elbow plates (1d) is provided with a positioning shaft (1d1) and a limiting shaft (1d2). The positioning shaft (1d1) is located on both sides of the head of the T-shaped guide rail, and the limiting shaft (1d2) is located below the head of the T-shaped guide rail. The upper vertical traveling wheel (1b), the horizontal traveling wheel (1c), the continuous elbow plate (1d), the positioning shaft (1d1), and the limiting shaft (1d2) together constitute the guiding travel mechanism.
4. A floating dock upper traction system support trolley according to claim 1, wherein, The support mechanism includes a guide wheel (4) and a support plate (5) located on both sides of the guide wheel (4) and rotatably connected to the guide wheel (4). The bottom of the support plate (5) is fixedly connected to the upper surface of the crane frame (1), and the top of the guide wheel (4) is lower than the bottom of the clamping groove.
5. A floating dock upper traction system support trolley according to claim 4, wherein, A pressure roller (6) is also provided directly above the guide wheel (4). The pressure roller (6) is located in front of the locking mechanism. Connecting plates (7) are provided on both sides of the pressure roller (6). The lower end of the connecting plate (7) is fixedly connected to the support plate (5).
6. The trolley supporting the traction system on a floating dock according to claim 5, characterized in that, The connecting plate (7) has a vertically open groove at the bottom, and the groove is equipped with a buffer spring (7a) and a moving plate (7b).
7. A trolley supporting a traction system on a floating dock according to claim 6, characterized in that, The two ends of the buffer spring (7a) are connected to the inner wall of the top of the chute and the top of the moving plate (7b), respectively. The moving plate (7b) extends vertically downward to the end of the chute and the pressure roller (6) for hoisting.