CN202415025U - Oscillating pulley system - Google Patents

Abstract

The utility model discloses an oscillating pulley system comprising an arm support, an oscillating pulley, a fixed pulley, a movable pulley and a wire rope, wherein the oscillating pulley is mounted on the arm support through an oscillating shaft; the fixed pulley is mounted on the arm support through a pulley hinge shaft; the movable pulley is connected to a lifting hook; the wire rope is connected in series to the fixed pulley, the movable shaft and the oscillating shaft; when the lifting hook, the movable pulley and the fixed pulley oscillate, the oscillating pulley is driven to rotate through the wire rope; and the wire rope expands and contracts with the oscillating of the lifting hook, the movable pulley and the fixed pulley. Through the adoption of the oscillating pulley system, the movable pulley, the fixed pulley and the lifting hook can oscillate freely, so that the drift angle between the wire rope on the lifting hook and the movable pulley, and the oscillating pulley is zero theoretically, which eliminates the action of the horizontal force of the wire rope on the pulley bearing of the oscillating pulley, meets the operation requirements on the oscillating angle of a lifting hook groups, and solves the problem existing in floating crane design for a long time.

Description

The swing pulley system

Technical field

The utility model relates to the weight-lifting equipment field, more particularly, relates to a kind of swing pulley system that is used for the boom type floating crane.

Background technology

Existing all kinds of large-scale boom type floating heavy duty crane, the leading sheave device of its lifting and winding system generally all adopts fixed form, is fixedly installed on the jib, and this design brings two types of problems:

First kind of situation; When hoisting crane is when satisfying the job requirements needs and being designed with the suspension hook group of big pivot angle; Therefore deflection angle of rope is excessive, and the leading sheave group that is fixed on the jib produces bigger horizontal component of force, in case when surpassing the limit that pulley bearings can bear; Cause the badly damaged of assembly pulley, cause heavy loss.

Second kind of situation for satisfying the design regulation of crane rope drift angle, haveed no alternative but limit the hunting range of suspension hook group, cause under some operating modes can't operation embarrassed look, compelled other Hoisting Program that adopt, with high costs.

The utility model content

The utility model is intended to propose a kind of swing pulley system that certain amplitude of fluctuation scope is provided.

According to an embodiment of the utility model, a kind of swing pulley system is proposed, comprising:

Jib;

The swing pulley, the swing pulley is installed on the jib through oscillating axle;

Fixed pulley, fixed pulley is installed on the jib through the fixed pulley hinge;

Movable pulley, movable pulley is connected to suspension hook;

Steel rope, steel rope serial connection fixed pulley, movable pulley and swing pulley;

Wherein, suspension hook, movable pulley and fixed pulley swing drive the swing pulley rotating through steel rope, and steel rope is flexible with the swing of suspension hook, movable pulley and fixed pulley.

In one embodiment, suspension hook, movable pulley and fixed pulley are that the center swings with the vertical direction.

The swing pulley system of the utility model makes fixed pulley, movable pulley and suspension hook to freely swing; Making the steel rope on suspension hook and the movable pulley is zero to the drift angle on the swing pulley in theory; Eliminated of the effect of steel rope horizontal component of force to swing pulley middle pulley bearing; Satisfy the job requirements of suspension hook group pivot angle, solved a puzzlement crane barge design difficult problem for a long time.

Description of drawings

The utility model above-mentioned and that other characteristic, character and advantage will become through the description below in conjunction with accompanying drawing and embodiment will be more obvious, identical in the accompanying drawings Reference numeral is represented identical characteristic all the time, wherein:

Fig. 1～Fig. 4 has disclosed the constructional drawing according to the swing pulley system of an embodiment of the utility model.

The specific embodiment

The basic design philosophy of the utility model is following:

The swing pulley links through oscillating axle and jib; The suspension hook group is around being that hinge rotates and realizes the required pivot angle of operation with the fixed pulley hinge; Thereby the swing pulley rotates around oscillating axle simultaneously and realizes steel rope and the servo-actuated of swing pulley, and vertical with the swing sheave shaft until steel rope, therefore pulley bearings does not receive horizontal force; Thereby guarantee that bearing is reliable, finally realize job requirements.

With reference to figure 1～shown in Figure 4, disclosed constructional drawing according to the swing pulley system of the embodiment of the utility model.

As shown in the figure, this swing pulley system comprises:

Jib 101;

Swing pulley 102, swing pulley 102 is installed on the jib 101 through oscillating axle 120;

Fixed pulley 105, fixed pulley 105 is installed on the jib 101 through fixed pulley hinge 104;

Movable pulley 106, movable pulley 106 is connected to suspension hook 107;

Steel rope 103, steel rope 103 serial connection fixed pulleys 105, movable pulley 106 and swing pulley 102;

Suspension hook 107, movable pulley 106 and fixed pulley 105 swings drive swing pulley 102 through steel rope 103 and rotate, and steel rope 103 is flexible with the swing of suspension hook 107, movable pulley 106 and fixed pulley 106.In one embodiment; Suspension hook 107, movable pulley 106 and fixed pulley 105 are that the center swings with the vertical direction; Such as, in the embodiment of Fig. 1～shown in Figure 4 the amplitude of fluctuation of suspension hook 107, movable pulley 106 and fixed pulley 105 be vertical direction about 15 ° of scopes.

Continuation is with reference to figure 1～Fig. 4, and the swing pulley 102 of this swing pulley system is installed on the jib 101 through oscillating axle 120.In the operation executive device, fixed pulley 105 is installed on the jib 101 through the hinge 104 of fixed pulley, and suspension hook 107 is installed on the movable pulley 106.Steel rope 103 windings will be swung pulley 102, movable pulley 106 and fixed pulley 105 and linked up.(legend is 15 ° when thereby the hinge 104 of fixed pulley rotates the required pivot angle of realization operation when fixed pulley 105 gets up with suspension hook 107 and movable pulley 106 swings; Amplitude 15 degree scopes about vertical direction of swinging usually); Swing pulley 102 also rotates through oscillating axle 120 simultaneously thereupon, realizes steel rope 103 and the servo-actuated of swinging pulley 102, and is vertical with the swing pulley middle pulley axle 122 of swing pulley 102 until steel rope 103; Thereby reach balance; This moment, steel rope 103 just along the force direction that receives of the pulley bearings 124 of swinging pulley gear 102, was guaranteed the increment load that pulley bearings 124 is not caused by horizontal force, thereby guaranteed that pulley bearings 124 is stressed safe and reliable; Finally realize job requirements, reach the design objective of the utility model.

The swing pulley system of the utility model makes fixed pulley, movable pulley and suspension hook to freely swing; Making the steel rope on suspension hook and the movable pulley is zero to the drift angle on the swing pulley in theory; Eliminated of the effect of steel rope horizontal component of force to swing pulley middle pulley bearing; Satisfy the job requirements of suspension hook group pivot angle, solved a puzzlement crane barge design difficult problem for a long time.

The foregoing description provides to being familiar with personnel in this area and realizes or use the utility model; Being familiar with those skilled in the art can make various modifications or variation to the foregoing description and not break away from the utility model thought of the utility model; Thereby the protection domain of the utility model do not limit by the foregoing description, and should be the maximum range that meets the inventive features that claims mention.

Claims (2)

1. a swing pulley system is characterized in that, comprising:

Jib;

The swing pulley, the swing pulley is installed on the jib through oscillating axle;

Fixed pulley, fixed pulley is installed on the jib through the fixed pulley hinge;

Movable pulley, movable pulley is connected to suspension hook;

Steel rope, steel rope serial connection fixed pulley, movable pulley and swing pulley;

Wherein, suspension hook, movable pulley and fixed pulley swing drive the swing pulley rotating through steel rope, and steel rope is flexible with the swing of suspension hook, movable pulley and fixed pulley.

2. swing pulley system as claimed in claim 1 is characterized in that, said suspension hook, movable pulley and fixed pulley are that the center swings with the vertical direction.

Images