Anti-torsion structure for steel wire rope of quay crane lifting trolley

Abstract

The invention provides a quay crane lifting trolley steel wire rope torsion resistance structure, and relates to the technical field of steel wire rope torsion resistance, the quay crane lifting trolley steel wire rope torsion resistance structure comprises a winding drum, a steel wire rope starts from the winding drum, passes through a lifting pulley block after bypassing a tensioning pulley, then passes through a redirection pulley block and then passes through the lifting pulley block again, and then starts from the lifting pulley block; and finally, the steel wire rope returns to the winding drum, an automatic push rod is installed on the lifting trolley body, and the telescopic end of the automatic push rod is connected to a displacement mechanism of the lifting pulley block. The structure has the beneficial effects that the structure is connected to a lifting pulley block, so that the stroke from a steel wire rope to a lifting appliance is shortened, the rotation angle adjusting precision of the lifting appliance is improved, two working modes of single and double lifting appliances can be simultaneously realized under a single lifting system, an operator does not need to manually recover the twisting of the lifting appliance, and the working efficiency is improved. The lifting appliance can rapidly rotate and rapidly reach the box aligning position, manpower is saved, the box aligning efficiency is improved, and therefore the loading and unloading efficiency of a quay crane is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel wire rope torsion resistance, and in particular to a steel wire rope torsion resistance structure for a quay crane hoisting trolley. Background Art

[0002] The quay crane loads and unloads containers by raising and lowering the spreader. After the quay crane is raised, a longer wire rope is needed for the lifting operation. Therefore, the wire rope is easily swung or twisted during the pulling and releasing process, which in turn causes the spreader under the wire rope to twist or tilt by inertia, making it difficult to align the containers. The lifting and winding system of the quay crane is the main component in the operation of the quay crane. The wire rope winding method and layout form affect the operating efficiency of the system. As an auxiliary action in the automated operation process, the automatic anti-torsion action relies on the electric push rod acting on the lifting pulley block on the trolley frame to quickly stabilize the spreader that produces a planar rotation motion due to factors such as wind load and eccentric load, so as to achieve the purpose of rapid container alignment.

[0003] The current traditional lifting winding consists of two symmetrically arranged groups of steel wires to form two independent closed loops, which can offset the twisting force generated by the steel wires during the lifting process of the hoist. At the same time, a driving mechanism is arranged on the front beam connecting beam, which can swing the steel wires through the rocker arm, further reducing the rotation angle of the hoist and improving the operating efficiency of the quay crane.

[0004] However, the above-mentioned pushing mechanism is arranged at the front beam connecting beam, and the travel of the wire rope from the hoist is relatively large, resulting in low adjustment accuracy of the rotation angle of the hoist, and limited improvement of the operating efficiency of the quay crane. Therefore, a quay crane hoisting trolley wire rope torsion-resistant structure is needed to improve the adjustment accuracy and improve the operating efficiency. Summary of the invention

[0005] In view of the problem that the current pushing mechanism is set at the front beam connecting beam, the wire rope has a large stroke from the sling, resulting in low adjustment accuracy of the sling's rotation angle and limited improvement in the quay crane operating efficiency, the present invention proposes a quay crane hoisting trolley wire rope torsion-resistant structure, which can improve the adjustment accuracy of the sling's rotation and further improve the operating efficiency.

[0006] The present invention proposes a torsion-resistant structure for a steel wire rope of a quay crane hoisting trolley, comprising a drum, a tensioning pulley block, a redirecting pulley block, a lifting pulley block, a sling pulley block and a lifting trolley main body. The steel wire rope starts from the drum, passes through the tensioning pulley and then passes through the lifting pulley block, then passes through the redirecting pulley block and again passes through the lifting pulley block, then starts from the lifting pulley block, passes through the sling pulley block and again passes through the tensioning pulley block, and finally the steel wire rope returns to the drum. An automatic push rod is installed on the lifting trolley main body, and the telescopic end of the automatic push rod is connected to the displacement mechanism of the lifting pulley block. The structure is connected to the lifting pulley block, shortens the travel of the steel wire rope to the sling, increases the accuracy of adjusting the rotation angle of the sling, can simultaneously realize single and double sling operation modes under a single lifting system, does not require the operator to manually restore the torsion of the sling, can enable the sling to rotate quickly and quickly reach the box-matching position, saves manpower and improves the box-matching efficiency, thereby improving the loading and unloading efficiency of the quay crane.

[0007] Furthermore, the displacement mechanism includes a trolley, which is mounted on the lifting trolley body through a slide rail and can slide, the lifting pulley block is mounted on the trolley, and the telescopic end of the automatic push rod is connected to the trolley.

[0008] Furthermore, the automatic push rod adopts an electric push rod or a hydraulic push rod.

[0009] Furthermore, the slide rail comprises an upper slide rail and a lower slide rail, the upper slide rail is fixed on the bottom of the trolley, and the lower slide rail is fixed on the lifting trolley body.

[0010] Furthermore, an anti-jump device is installed on the lifting pulley block.

[0011] Furthermore, an oil injection pipeline is provided on the trolley.

[0012] Furthermore, the outlet of the oil injection pipeline is located above the steel wire rope.

[0013] Furthermore, the electric push rod or the hydraulic push rod adopts a push rod with a thrust of more than 150KG.

[0014] The beneficial effects of the present invention are: This structure is connected to the lifting pulley block, shortening the travel of the wire rope to the spreader, increasing the accuracy of adjusting the rotation angle of the spreader, and being able to simultaneously realize single and double spreader operation modes under a single lifting system. There is no need for the operator to manually restore the spreader twist, and the spreader can be quickly rotated and quickly reach the box-facing position, saving manpower and improving the box-facing efficiency, thereby improving the loading and unloading efficiency of the quay crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the steel wire rope winding structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the main structure of the torsion-resistant structure of the present invention.

[0018] In the figure: 1. Drum; 2. Tensioning pulley block; 3. Redirecting pulley block; 4. Lifting pulley block; 5. Hoisting gear pulley block; 6. Lifting trolley body; 7. Automatic push rod. DETAILED DESCRIPTION

[0019] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0020] like Figure 1-2As shown, in this embodiment, the present invention proposes a torsion-resistant structure of a steel wire rope of a quay crane hoisting trolley, comprising a drum 1, a tensioning pulley block 2, a redirecting pulley block 3, a lifting pulley block 4, a sling pulley block 5, and a lifting trolley body 6. The steel wire rope starts from the drum 1, passes through the tensioning pulley 2, passes through the lifting pulley block 4, then passes through the redirecting pulley block 3, passes through the lifting pulley block 4 again, and then starts from the lifting pulley block 4, passes through the sling pulley block 5, passes through the tensioning pulley block 2 again, and finally the steel wire rope returns to the drum 1. To the reel 1, an automatic push rod 7 is installed on the lifting trolley body 6, and the telescopic end of the automatic push rod 7 is connected to the displacement mechanism of the lifting pulley block 4. The displacement mechanism includes a trolley, which is installed on the lifting trolley body 6 through a slide rail and can slide. The lifting pulley block 4 is installed on the trolley, and the telescopic end of the automatic push rod 7 is connected to the trolley. The slide rail includes an upper slide rail and a lower slide rail. The upper slide rail is fixed to the bottom of the trolley, and the lower slide rail is fixed to the lifting trolley body 6. An anti-jump device is installed on the lifting pulley block 4 The anti-jump device can avoid the derailment of the wire rope. The trolley is provided with an oil injection pipeline, and the outlet of the oil injection pipeline is located above the wire rope. The wire rope can be lubricated through the oil injection pipeline to extend the service life of the wire rope. The automatic push rod 7 adopts an electric push rod or a hydraulic push rod. The electric push rod or the hydraulic push rod adopts a push rod with a thrust of more than 150KG. This structure is connected to the lifting pulley block, which shortens the stroke of the wire rope from the sling, increases the accuracy of adjusting the rotation angle of the sling, and can simultaneously realize single and double sling operation modes under a single lifting system. There is no need for the operator to manually restore the torsion of the sling, and the sling can be quickly rotated and quickly reach the box position, saving manpower and improving the box efficiency, thereby improving the loading and unloading efficiency of the quay crane (the trolley, slide rail, pulley block and other components in this application document and the specific structure of the installation position of the components are common knowledge known to people in this field, and will not be described in detail here. Only the wire rope winding method and the installation of the entire anti-torsion structure are described).

[0021] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel wire rope torsion-resistant structure for a quay crane hoisting trolley, comprising a drum (1), a tensioning pulley block (2), a redirecting pulley block (3), a hoisting pulley block (4), a sling pulley block (5), and a hoisting trolley body (6), characterized in that: The steel wire rope starts from the drum (1), passes around the tensioning pulley (2), and then passes through the lifting pulley block (4), then passes through the redirecting pulley block (3), and then passes through the lifting pulley block (4), and then starts from the lifting pulley block (4), passes around the sling pulley block (5), and then passes through the tensioning pulley block (2) again. Finally, the steel wire rope returns to the drum (1). An automatic push rod (7) is installed on the lifting trolley body (6), and the telescopic end of the automatic push rod (7) is connected to the displacement mechanism of the lifting pulley block (4).

2. The torsion-resistant structure of the steel wire rope of the quay crane hoisting trolley according to claim 1 is characterized in that: The displacement mechanism comprises a trolley, which is mounted on a lifting trolley body (6) via a slide rail and is capable of sliding. A lifting pulley block (4) is mounted on the trolley, and a telescopic end of an automatic push rod (7) is connected to the trolley.

3. The torsion-resistant structure of the steel wire rope of the quay crane hoisting trolley according to claim 2 is characterized in that: The automatic push rod (7) adopts an electric push rod or a hydraulic push rod.

4. The torsion-resistant structure of the steel wire rope of the quay crane hoisting trolley according to claim 2 is characterized in that: The slide rails include an upper slide rail and a lower slide rail, wherein the upper slide rail is fixed to the bottom of the trolley, and the lower slide rail is fixed to the lifting trolley body (6).

5. The anti-torsion structure of the steel wire rope of the quay crane hoisting trolley according to claim 1 is characterized in that: An anti-jump device is installed on the lifting pulley block (4).

6. The anti-torsion structure of the steel wire rope of the quay crane hoisting trolley according to claim 1 is characterized in that: The trolley is provided with an oil injection pipeline.

7. The anti-torsion structure of the steel wire rope of the quay crane hoisting trolley according to claim 6 is characterized in that: The outlet of the oil injection pipe is located above the wire rope.

8. The anti-torsion structure of the steel wire rope of the quay crane hoisting trolley according to claim 3 is characterized in that: Electric push rods or hydraulic push rods all use push rods with a thrust of more than 150KG.

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