Anti-rotation mechanism for hoisting steel wire rope terminal of gantry crane

Abstract

The utility model discloses a gantry crane hoisting steel wire rope terminal anti-rotation mechanism, which relates to the technical field of port container loading and unloading, and comprises a hoisting steel wire rope terminal pull rod upper end fixing structure and a hoisting steel wire rope terminal pull rod anti-rotation structure, the fixing structure comprises a lock nut, a lock nut clamping plate, a bushing ring, a self-lubricating turnup sliding bearing, a maintenance-free spherical sliding thrust bearing, a bearing protection cover and a swing beam. The upper end of the hoisting steel wire rope terminal pull rod is fixed and pressed on the bushing ring through the lock nut and the lock nut clamping plate, and the bushing ring is nested on the maintenance-free spherical sliding thrust bearing; the maintenance-free spherical sliding thrust bearing is fixed to the swing beam structure, and the lifting steel wire rope terminal pull rod can do universal movement through the maintenance-free spherical sliding thrust bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of port container loading and unloading, in particular to a terminal anti-rotation mechanism for a lifting wire rope of a gantry crane. Background Art

[0002] Rubber-tyred container gantry crane is an important lifting machinery in port engineering machinery. The main lifting wire rope is a rotating wire rope. If the lifting wire rope terminal can rotate freely, there is a risk of loose wire rope breakage, which may lead to serious safety accidents. The old lifting wire rope terminal anti-rotation mechanism has two long slot plates welded on the wire rope terminal pull rod. The long slot plate is inserted into a fixed threaded rod. When the pull rod swings with the wire rope, the two long slot plates welded on it make linear motion relative to the threaded rod, which causes great wear on the threaded rod and requires regular replacement of the threaded rod, which increases maintenance costs and poses a safety hazard. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a terminal anti-rotation mechanism for a lifting wire rope of a gantry crane, which solves the problem that the lifting wire rope has the risk of loose strands breaking, thereby causing serious safety accidents.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a gantry crane lifting wire rope terminal anti-rotation mechanism, the anti-rotation mechanism includes a lifting wire rope terminal pull rod upper end fixing structure and a lifting wire rope terminal pull rod anti-rotation structure, the fixing structure includes a lock nut, a lock nut card plate, a liner ring, a self-lubricating flange sliding bearing, a maintenance-free spherical sliding thrust bearing, a bearing protection cover and a swing beam, wherein the anti-rotation structure includes a square fork, a self-lubricating flange sliding bearing, a gasket, a steel bushing, a stainless steel connecting wire rope with rings at both ends and a fastener, the square fork is formed by an integrated machine, and the two There is a pair of parallel fork plates at each end, and concentric through holes are provided on the fork plates. The fork plates at both ends are arranged vertically in a cross shape. The square fork is fixed to the side connecting plate of the terminal pull rod of the lifting wire rope by fasteners. The stainless steel connecting wire rope with rings at both ends is provided with a steel bushing and a self-lubricating flange sliding bearing inside the ring. The upper end of the terminal pull rod of the lifting wire rope is a threaded rod, wherein the thread size of the threaded rod matches the thread size of the lock nut, and the lower end is a welded arc-shaped connecting ear plate, and there is a connecting plate formed by an integrated machine on the side of the connecting ear plate, and a self-lubricating flange sliding bearing is provided in the shaft hole of the connecting plate.

[0005] As a preferred technical solution of the utility model, a liner ring is provided at the lower end of the lock nut, wherein the lower end of the liner ring is nested between the inner ring of the maintenance-free spherical sliding thrust bearing and the terminal pull rod thread of the lifting wire rope, and the upper end is in contact with the lock nut.

[0006] As a preferred technical solution of the utility model, a circular groove is respectively provided on the bottom plates at both ends of the pendulum beam, and the diameter of the circular groove is larger than the outer diameter of the maintenance-free spherical sliding thrust bearing, wherein the maintenance-free spherical sliding thrust bearing is placed in the circular groove at the bottom of the pendulum beam, and two pairs of annular equally divided threaded holes are provided on the periphery of the circular groove at the bottom of the pendulum beam.

[0007] As a preferred technical solution of the utility model, the bearing protection cover is placed above the maintenance-free spherical sliding thrust bearing, wherein two pairs of through holes are provided on the bottom plate of the bearing protection cover.

[0008] As a preferred technical solution of the utility model, the outer diameter of the steel bushing is smaller than the inner diameter of the connecting wire rope ring, and the inner diameter of the steel bushing is larger than the outer diameter of the self-lubricating flange sliding bearing, wherein the stainless steel connecting wire rope with rings at both ends is connected and fixed to the square fork by fasteners.

[0009] The advantages of the utility model are: 1. The structure is simple and reliable. Each sliding bearing is self-lubricating and maintenance-free, and no additional lubrication is required. The connecting wire rope is made of stainless steel to avoid corrosion and rust. The shaft holes at both ends of the square fork are perpendicular to each other and form a cross shape, which can decompose the universal motion into horizontal and vertical movements, avoiding jamming and wear of the connecting parts during swinging.

[0010] 2. A margin is reserved for the length of the connecting wire rope, allowing the pull rod to rotate at a certain angle, avoiding the situation where the connecting wire rope is subjected to excessive force and breaks. The new anti-rotation solution for the lifting wire rope terminal is reliable, does not require maintenance in the later stage, and eliminates safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0012] Figure 1 It is the overall structure diagram of the utility model;

[0013] Figure 2 This is a structural diagram of section A in the utility model;

[0014] Figure 3 This is the structural diagram of the cross-section C of the utility model;

[0015] Figure 4 This is a cross-sectional structural diagram of section D of the utility model;

[0016] Figure 5 This is the main structural diagram of the utility model;

[0017] Figure 6 This is a structural diagram of section B in the utility model.

[0018] Legend: 1. Terminal rod for lifting wire rope; 2. Square fork; 3. Stainless steel connecting wire rope with collars at both ends; 4. Self-lubricating flanged sliding bearing; 5. Gasket; 6. Fastener; 7. Steel bushing; 8. Lock nut; 9. Bushing ring; 10. Maintenance-free spherical sliding thrust bearing; 11. Bearing protection cover; 12. Lock nut clamp; 13. Swing beam. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides a gantry crane lifting wire rope terminal anti-rotation mechanism, which effectively solves the problem that there is a risk of loose strands of the lifting wire rope breaking, thereby causing serious safety accidents. The upper end of the lifting wire rope terminal pull rod 1 is fixed and pressed on the bushing 9 by a lock nut 8 and a lock nut clamping plate 12. The bushing 9 is nested on a maintenance-free spherical sliding thrust bearing 10. The maintenance-free spherical sliding thrust bearing 10 is fixed on the swing beam structure. The lifting wire rope terminal pull rod 1 can perform universal motion through the maintenance-free spherical sliding thrust bearing 10. The lower end shaft hole of the lifting wire rope terminal pull rod 1 is connected and fixed to the lifting wire rope wedge sleeve through a pin shaft.

[0020] like Figures 1 to 6 As shown, the technical solution in the embodiment of the present application effectively solves the problem that the lifting wire rope has the risk of loose strands breaking, thereby causing serious safety accidents. The overall idea is as follows:

[0021] In view of the problems existing in the prior art, the utility model provides a gantry crane lifting wire rope terminal anti-rotation mechanism, the anti-rotation mechanism includes a lifting wire rope terminal pull rod 1 upper end fixing structure and a lifting wire rope terminal pull rod 1 anti-rotation structure, the fixing structure includes a lock nut 8, a lock nut card plate 12, a bushing 9, a self-lubricating flange sliding bearing 4, a maintenance-free spherical sliding thrust bearing 10, a bearing protection cover 11 and a swing beam 13, wherein the anti-rotation structure includes a square fork 2, a self-lubricating flange sliding bearing 4, a gasket 5, a steel bushing 7, a stainless steel connecting wire rope 3 with collars at both ends and a fastener 6, the square fork 2 is formed by an integrated machine, and each end has a pair of parallel fork plates, and the fork plates are provided with Concentric through holes, fork plates at both ends are arranged vertically in a cross shape, the square fork 2 is fixed to the side connecting plate of the lifting wire rope terminal pull rod 1 by fasteners 6, and the stainless steel connecting wire rope 3 with rings at both ends is provided with a steel bushing 7 and a self-lubricating flanged sliding bearing 4 inside the ring. The upper end of the lifting wire rope terminal pull rod 1 is a threaded rod, wherein the thread size of the threaded rod matches the thread size of the lock nut 8, and the lower end is a welded arc-shaped connecting ear plate, and there is a connecting plate formed by an integrated machine on the side of the connecting ear plate, and a self-lubricating flanged sliding bearing is arranged in the shaft hole of the connecting plate. The structure is simple and reliable, and each sliding bearing is self-lubricating and maintenance-free, without the need for additional lubrication. The connecting wire rope is made of stainless steel to avoid corrosion and rust.

[0022] A liner ring 9 is provided at the lower end of the lock nut 8, wherein the lower end of the liner ring 9 is nested between the inner ring of the maintenance-free spherical sliding thrust bearing 10 and the thread of the terminal pull rod 1 of the lifting wire rope, and the upper end is in contact with the lock nut 8. A circular groove is provided on the bottom plates at both ends of the swing beam 13 respectively, and the diameter of the circular groove is larger than the outer diameter of the maintenance-free spherical sliding thrust bearing 10, wherein the maintenance-free spherical sliding thrust bearing 10 is placed in the circular groove at the bottom of the swing beam 13, and two pairs of annular equally divided threaded holes are provided on the periphery of the circular groove at the bottom of the swing beam 13, and the axial holes at both ends of the square fork 2 are perpendicular to each other and form a cross shape, which can decompose the universal motion into horizontal and vertical motions, avoiding jamming and wear of the connection parts during swinging.

[0023] The bearing protection cover 11 is placed above the maintenance-free spherical sliding thrust bearing 10, wherein two pairs of through holes are provided on the bottom plate of the bearing protection cover 11, the outer diameter of the steel bushing 7 is smaller than the inner diameter of the connecting wire rope ring, and the inner diameter of the steel bushing 7 is larger than the outer diameter of the self-lubricating flanged sliding bearing 4, wherein the stainless steel connecting wire rope 3 with rings at both ends is connected and fixed to the square fork 2 by fasteners 6, and a margin is reserved for the length of the connecting wire rope to allow the pull rod to rotate at a certain angle, thereby avoiding the situation where the connecting wire rope is subjected to excessive force and thus breaks. The new anti-rotation scheme for the terminal of the lifting wire rope is reliable, does not require maintenance in the later stage, and eliminates safety hazards.

[0024] The working principle of the utility model is as follows: the upper end of the lifting wire rope terminal pull rod 1 is a screw rod, which is connected to the internal shaft ring of the maintenance-free spherical sliding thrust bearing 10 through a lock nut 8 and a bushing ring 9. The shaft ring can do universal motion on the bearing seat ring. The lower end of the lifting wire rope terminal pull rod 1 is an arc-shaped connecting ear plate, which is connected and fixed to the wire rope wedge sleeve. The lifting wire rope terminal pull rod 1 can swing accordingly with the swing of the container. There is an integrally formed connecting plate on the side of the lifting wire rope terminal pull rod 1, and a A self-lubricating flanged sliding bearing 4 is connected and fixed to the axial hole at one end of the square fork 2 by a fastener 6. A stainless steel connecting wire rope 3 with a fixed length and rings at both ends has a steel bushing 7 and a self-lubricating flanged sliding bearing 4 installed inside the ring, and is connected and fixed to the axial hole at the other end of the square fork 2 by a fastener 6. Two lifting wire rope terminal rods 1 are connected in series through the connecting wire rope, which limits the rotation angle of the lifting wire rope terminal rod 1 without affecting the swing of the lifting wire rope terminal rod 1.

[0025] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A gantry crane hoisting wire rope terminal anti-rotation mechanism, characterized in that: The anti-rotation mechanism comprises an upper end fixing structure of the lifting wire rope terminal pull rod (1) and an anti-rotation structure of the lifting wire rope terminal pull rod (1), and the fixing structure comprises a lock nut (8), a lock nut clamping plate (12), a liner ring (9), a self-lubricating flanged sliding bearing (4), a maintenance-free spherical sliding thrust bearing (10), a bearing protection cover (11) and a swing beam (13); The anti-rotation structure comprises a square fork (2), a self-lubricating flanged sliding bearing (4), a gasket (5), a steel bushing (7), a stainless steel connecting wire rope (3) with collars at both ends, and a fastener (6); the square fork (2) is formed by an integrated machine, and each end of the square fork (2) has a pair of parallel fork plates, and the fork plates are provided with concentric through holes. The fork plates at both ends are arranged vertically in a cross shape. The square fork (2) is fixed to the side connecting plate of the lifting wire rope terminal pull rod (1) by a fastener (6), and the stainless steel connecting wire rope (3) with collars at both ends is provided with a steel bushing (7) and a self-lubricating flanged sliding bearing (4) inside the collar.

2. The anti-rotation mechanism for the hoisting wire rope terminal of a gantry crane as claimed in claim 1, characterized in that: The upper end of the lifting wire rope terminal pull rod (1) is a threaded rod; The thread size of the threaded rod matches the thread size of the lock nut (8), the lower end is a welded arc-shaped connecting ear plate, and an integrally machined connecting plate is provided on the side of the connecting ear plate, and a self-lubricating flanged sliding bearing (4) is provided in the shaft hole of the connecting plate.

3. The anti-rotation mechanism for the hoisting wire rope terminal of a gantry crane according to claim 1, characterized in that: A liner ring (9) is provided at the lower end of the lock nut (8); The lower end of the bushing ring (9) is nested between the inner ring of the maintenance-free spherical sliding thrust bearing (10) and the thread of the lifting wire rope terminal pull rod (1), and the upper end of the bushing ring (9) is in contact with the lock nut (8).

4. The anti-rotation mechanism for the hoisting wire rope terminal of a gantry crane as claimed in claim 1, characterized in that: The bottom plates at both ends of the swing beam (13) are respectively provided with a circular groove, the diameter of the circular groove being larger than the outer diameter of the maintenance-free spherical sliding thrust bearing (10); The maintenance-free spherical sliding thrust bearing (10) is placed in a circular groove at the bottom of the swing beam (13), and two pairs of annular equally divided threaded holes are provided on the periphery of the circular groove at the bottom of the swing beam (13).

5. The anti-rotation mechanism for the hoisting wire rope terminal of a gantry crane as claimed in claim 1, characterized in that: The bearing protection cover (11) is placed above the maintenance-free spherical sliding thrust bearing (10); Wherein, two pairs of through holes are provided on the bottom plate of the bearing protection cover (11).

6. The anti-rotation mechanism for the hoisting wire rope terminal of a gantry crane as claimed in claim 1, characterized in that: The outer diameter of the steel bushing (7) is smaller than the inner diameter of the connecting wire rope ring, and the inner diameter of the steel bushing (7) is larger than the outer diameter of the self-lubricating flanged sliding bearing (4); The stainless steel connecting wire rope (3) with rings at both ends is connected and fixed to the square fork (2) via a fastener (6).

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