A V-shaped anti-sway and anti-torsion control system for lifting loads

Abstract

This invention discloses a V-shaped anti-sway and anti-torsion control system for a spreader load, comprising a trolley drive unit, a main trolley, an auxiliary trolley, a balancing drive roller, a first winding unit, and a second winding unit. The main trolley is located on the land side of the spreader; the auxiliary trolley is located on the sea side of the spreader; the balancing drive roller is mounted on the main trolley; the trolley drive unit is connected to the main trolley via the first winding unit; and the balancing drive roller is connected to the auxiliary trolley via the second winding unit. This invention solves the problem that in existing systems, the drive roller directly faces the strong horizontal component of the load, and the drive motor may be damaged at the moment the drive roller brake is released.

Description

Technical Field

[0001] This invention relates to anti-sway and anti-torsion technology for spreaders of container quay cranes, and more specifically, to a V-shaped anti-sway and anti-torsion control system for spreader loads. Background Technology

[0002] To achieve rapid and accurate anti-sway and anti-torsion positioning of container quay crane spreaders and improve the efficiency of quay crane operations, the industry has developed a V-shaped lifting configuration using container spreader loads. This configuration effectively ensures that the spreader follows the trolley steadily during operation, without any forward or backward swaying or left or right twisting.

[0003] Currently, in V-type spreader load-bearing systems, because the spreader load has a large horizontal component, for example, with an 85T load, the maximum acceleration and deceleration of the trolley is 0.8 m / s². 2 At this time, a V-shaped angle of 20°DEG is required, and the horizontal static component force can reach 7.5T. The horizontal component force can even reach 15T in dynamic conditions. This horizontal component force is very large. Relying solely on the existing system to drive and counteract such a large horizontal load component force makes the feasibility of the V-shaped operation configuration seriously problematic.

[0004] like Figure 1 As shown, if conventional parallel drive is used, the drive rollers (landside drive roller 1 and seaside drive roller 2) directly face the strong horizontal component of the load. At the moment the drive roller brake is released, the drive motor must have a large torque to counteract the horizontal component of the load. Summary of the Invention

[0005] In view of the deficiencies in the existing technology, the purpose of this invention is to provide a V-shaped anti-sway and anti-torsion control system for lifting loads, which solves the problem that the drive motor may be damaged when the drive drum directly faces the strong horizontal component of the load and the brake of the drive drum is opened.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A V-shaped anti-sway and anti-torsion control system for spreader loads includes a trolley drive unit, a main trolley, an auxiliary trolley, a balance drive roller, a first winding unit, and a second winding unit.

[0008] The main trolley is located on the land side of the spreading device;

[0009] The auxiliary trolley is located on the sea side of the spreading device;

[0010] The balance drive roller is mounted on the main trolley;

[0011] The trolley drive unit is connected to the main trolley via the first winding unit;

[0012] The balancing drive roller is connected to the auxiliary trolley via the second winding unit.

[0013] Preferably, the main trolley is a self-propelled trolley or a wire rope traction trolley.

[0014] Preferably, the balancing drive roller adopts a planetary gearbox system with an embedded motor drive.

[0015] Preferably, the first winding unit includes a first wire rope, a first pulley block, and a second pulley block;

[0016] The first pulley block is located on the land side;

[0017] The second pulley system is located on the sea side;

[0018] The first wire rope is wound on the drum of the trolley drive unit, with one end connected to the land side of the main trolley via the first pulley group, and the other end connected to the sea side of the main trolley via the second pulley group.

[0019] Preferably, the second winding unit includes a second wire rope, a third pulley block, and a fourth pulley block;

[0020] The third pulley block is located on the land side;

[0021] The third pulley block is located on the sea side;

[0022] The second wire rope is wound around the drum of the balance drive roller, with one end connected to the sea side of the auxiliary trolley via the third pulley block and the second pulley block in sequence, and the other end connected to the land side of the auxiliary trolley.

[0023] The present invention provides a V-shaped anti-sway and anti-torsion control system for spreader loads, which achieves this by using a balancing drive roller on the main trolley of the quay crane to drive a long-distance separation trolley. The balancing drive roller is placed on the main trolley to balance the horizontal component force generated by the load between the main trolley and the auxiliary trolley. This makes the main trolley and the auxiliary trolley balanced in the horizontal direction, resulting in smooth driving operation. Normally, a large amount of active force is not required to counteract the horizontal force of the load, which makes V-shaped operations feasible and improves their feasibility. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an existing V-type lifting configuration;

[0025] Figure 2 This is a schematic diagram of the V-shaped anti-sway and anti-torsion control system for the lifting device load of the present invention;

[0026] Figure 3 This is a top view schematic diagram of the second winding unit in the V-shaped anti-sway and anti-torsion control system for the load of the lifting device of the present invention;

[0027] Figure 4 This is a schematic diagram of the V-shaped anti-sway and anti-torsion control system for the lifting device load of the present invention. Detailed Implementation

[0028] To better understand the above-mentioned technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] Combination Figures 2 to 4 As shown, the present invention provides a V-shaped anti-sway and anti-torsion control system for a lifting load, comprising a trolley drive unit 3, a main trolley 4, an auxiliary trolley 5, a balance drive roller 6, a first winding unit, and a second winding unit 7.

[0030] The main trolley 4 is located on the land side of the spreader.

[0031] The auxiliary trolley 5 is located on the sea side of the spreading device.

[0032] The balance drive roller 6 is mounted on the main trolley 4.

[0033] The trolley drive unit 3 is connected to the main trolley 4 through the first winding unit;

[0034] The balance drive roller 6 is connected to the auxiliary trolley 5 through the second winding unit 7.

[0035] The first winding unit includes a first wire rope 8, a first pulley block 9, and a second pulley block 10.

[0036] The first pulley block 9 is located on the land side.

[0037] The second pulley block 10 is located on the sea side.

[0038] The first wire rope 8 is wound around the drum of the trolley drive unit 3. One end is wound around the first pulley block 9 and connected to the land side of the main trolley 4. The other end is wound around the second pulley block 10 and connected to the sea side of the main trolley 4.

[0039] The second winding unit 7 includes a second wire rope 71, a third pulley block 72, and a fourth pulley block 73.

[0040] The third pulley block 72 is located on the land side.

[0041] The third pulley block 73 is located on the sea side.

[0042] The second wire rope 71 is wound around the drum of the balance drive roller 3. One end is wound around the third pulley block 72 and the second pulley block 73 in sequence and then connected to the sea side of the auxiliary trolley 5. The other end is directly connected to the land side of the auxiliary trolley 5.

[0043] The horizontal component of the load on the auxiliary trolley 5 is transmitted to the main trolley 4 via the second wire rope 71. Simultaneously, the horizontal component of the load on the main trolley 4 is transmitted to the auxiliary trolley 5 via the second wire rope 71, thus canceling out the horizontal components of the load (e.g., ...). Figure 4 (As shown). Thus, when the trolley drive unit 3 drives the main trolley 4 to move forward or backward, it is only necessary to brake through the balance drive roller 6, and the main trolley 4 can drag the auxiliary trolley 5 to move forward or backward.

[0044] When the system needs to control the separation and retraction of the V-shape (composed of the lifting wire rope 41 on the main trolley 4 on the land side and the lifting wire rope 51 on the auxiliary trolley 5 on the sea side), the second wire rope 71 can be wound up and down by rotating the drum of the balance drive drum 3 on the main trolley 4 in both directions to control the distance between the auxiliary trolley 5 and the main trolley 4.

[0045] The main trolley 4 can be a self-propelled trolley or a trolley pulled by a wire rope.

[0046] The balance drive roller 3 can be equipped with a planetary gearbox system driven by an embedded motor.

[0047] This invention employs a balancing drive roller 3 placed on the main trolley 4, simplifying the existing parallel drive wire rope winding configuration. It also manages the auxiliary trolley on the sea side, balancing the horizontal load components between the main trolley 4 and the auxiliary trolley 5 to achieve V-shaped operation. This invention further increases the feasibility of the V-shaped configuration by placing a second drive roller (balancing drive roller 3) on the main trolley 4.

[0048] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A V-shaped anti-sway and anti-torsion control system for lifting loads, characterized in that: It includes a trolley drive unit, a main trolley, an auxiliary trolley, a balance drive roller, a first winding unit, and a second winding unit; The main trolley is located on the land side of the spreading device; The auxiliary trolley is located on the sea side of the spreading device; The balance drive roller is mounted on the main trolley; The trolley drive unit is connected to the main trolley via the first winding unit; The balancing drive roller is connected to the auxiliary trolley via the second winding unit. The first winding unit includes a first wire rope, a first pulley block, and a second pulley block; The first pulley system is located on the land side; The second pulley system is located on the sea side; The first steel wire rope is wound around the drum of the trolley drive unit, with one end connected to the land side of the main trolley via the first pulley block, and the other end connected to the sea side of the main trolley via the second pulley block. The second winding unit includes a second wire rope, a third pulley block, and a fourth pulley block; The third pulley block is located on the land side; The third pulley block is located on the sea side; The second steel wire rope is wound around the drum of the balance drive roller, with one end connected to the sea side of the auxiliary trolley via the third pulley block and the second pulley block in sequence, and the other end connected to the land side of the auxiliary trolley. The V-shape is formed by the hoisting wire rope on the main trolley on the land side and the hoisting wire rope on the auxiliary trolley on the sea side.

2. The V-shaped anti-sway and anti-torsion control system for lifting loads according to claim 1, characterized in that: The main trolley is either a self-propelled trolley or a wire rope-traction trolley.

3. The V-shaped anti-sway and anti-torsion control system for lifting loads according to claim 1, characterized in that: The balancing drive roller adopts a planetary gearbox system driven by an embedded motor.

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