CN2858605Y

CN2858605Y - Reactive-load hydraulic control opening in air single-rope grab

Info

Publication number: CN2858605Y
Application number: CN 200520077963
Authority: CN
Inventors: 李鹏飞; 胡常斌
Original assignee: ANQING HUAXIN MACHINERY Co Ltd
Current assignee: ANQING HUAXIN MACHINERY Co Ltd
Priority date: 2005-11-22
Filing date: 2005-11-22
Publication date: 2007-01-17
Anticipated expiration: 2015-11-22

Abstract

The utility model involves a monocable grab for unloading. The purpose is to provide a midair opening hydraulic control monocable grab for operation in all kinds of condition without power, it is with simple structure and reliable performance. The feature of it is a pair of oil cylinder, which underparts are separately mounted on lower girder assembly, the outreached end of piston rod is connected with movable centre beam assembly, the upper and lower cylinder walls of two oil cylinder are connected with high-pressure oil tube, and the high-pressure oil tube has stop valve on it. The utility model need not outside dynamic force, can easily realize underwater operation, not influenced by working conditions and regions; the opening mechanism is with internal recycle of oil pressure and the reliability of open-close action can reach to 100%, with simple and light structure, the features of this grab is low manufacturing cost, low maintenance expenses, short time for opening and closing and high handling efficiency for hoisting machinery.

Description

Idle fluid control is opened single rope grab in the air

Technical field

The utility model relates to the unloading single rope grab.

Background technology

At present, the international and domestic single rope grab that generally adopts mainly contains following three kinds of versions, the A type is the formula guide rod halberd fork piece single rope grab that contacts to earth, its major defect is: complex structure, manufacturing cost height, the switching of contacting to earth, very easily damage transportation meanss such as load wagon, ship, the grab bucket framing member is damaged, and work efficiency is low.Type B is that mechanical type shakes control and opens single rope grab in the air, its major defect is: component of machine requires very strict in this type grab bucket, as occur wearing and tearing or brute spring elasticity dissipate at work, then cause mechanism's misoperation or be failure to actuate, the personnel in the peripheral operating range, property have been constituted serious potential safety hazard.The C type is that electric hydaulic is opened single rope grab in the air, and its major defect is: involve great expense, accuracy of manufacture requires very accurate, and in same operating mode, in the grab bucket work of the same type, this grab bucket exists that the daily maintenance amount is big, the big two large problems of expense.

Summary of the invention

The purpose of this utility model is: in order to overcome the deficiency of above all types of grab bucket in structure and use, provide a kind of power that need not, simple in structure, dependable performance can be opened single rope grab in the air by the idle fluid control of operation under various operating modes.

Concrete structural design scheme is as follows:

Idle fluid control is opened single rope grab in the air, comprise hoist rope mechanism, deck beam assembly, movable central sill assembly, through beam assembly, two struts and about the lobe that struggles against; Wherein be connected by hinge pin axis respectively between the top of the outside of the upper end of strut and deck beam assembly, lower end and bucket lobe, bucket lobe and the through beam assembly, make it to become the four-bar mechanism that to do relative motion.

Also comprise a pair of hydraulic ram, a pair of cylinder block 7 is 8 adjacent with two struts respectively, its underpart is located on the through beam assembly, the overhanging end of piston rod 6 is connecting movable central sill assembly 5, two cylinder blocks, 7 upper and lower oil pocket sidewalls are connecting the high pressure arm respectively, two high pressure arms of two upper oil cavities are connecting an end of high pressure fuel pipe 11 by tee connection, two high pressure arms of two lower oil cavities are connecting the other end of high pressure fuel pipe 11 by tee connection, and high pressure fuel pipe 11 middle parts are provided with shutoff valve 10.

Useful technique effect of the present utility model is: this grab bucket need not external impetus, can easily realize under-water operation, and is not subjected to the restriction of different operating modes, different regions; Switching mechanism is circulation in the oil pressure, adopts commutation stop valve control, makes its more reasonable structure, and the on-off action reliability reaches 100%, and simultaneously, switching mechanism is simple, light and handy.Both reduce manufacturing cost, reduced the maintenance expense again; And this grab bucket switching time is short, has improved the handling efficiency of hoisting crane greatly.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 treats operating condition figure for whole grab bucket sling to,

Fig. 3 makes the upper and lower oil pocket conducting state of oil cylinder figure for opening shutoff valve,

Fig. 4 is for grabbing the thing constitution diagram,

Fig. 5 rises constitution diagram for after grabbing goods.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Idle fluid control open in the air single rope grab comprise hoist rope mechanism, deck beam assembly 3, movable central sill assembly 5, through beam assembly 12, two struts 8 and about bucket lobe 13.Crane rope passes sheave 2, walk around the pulley 4 of movable central sill assembly 5 again, be fixed on the deck beam assembly 3, wherein be connected by hinge pin axis respectively between the top of the outside of the upper end of strut 8 and deck beam assembly 3, lower end and bucket lobe 13, bucket lobe 13 and the through beam assembly 12, make it to become the four-bar mechanism that to do relative motion.

A pair of cylinder block 7 is 8 adjacent with two struts respectively, its underpart is installed on the through beam assembly 12, the overhanging end of piston rod 6 is connecting movable central sill assembly 5, two cylinder blocks, 7 upper and lower oil pocket sidewalls are connecting the high pressure arm respectively, two high pressure arms of two cylinder blocks, 7 upper oil cavities are connecting an end of high pressure fuel pipe 11 by tee connection 9, two high pressure arms of two lower oil cavities are also connecting the other end of high pressure fuel pipe 11 by another tee connection, shutoff valve 10 is equipped with at high pressure fuel pipe 11 middle parts.

Its principle of work is as follows:

When closing, masterpiece is used on the movable central sill assembly 5 when shutoff valve 10 (manual or remote control), and at this moment, the upper and lower chamber oil circuit of cylinder block 7 is shut, and complete machine is raised, and making grab bucket be in open configuration as shown in Figure 2 and being positioned at the stockpile top; At this moment, open shutoff valve 10, the upper and lower chamber oil circuit conducting of cylinder block 7, loose loop wheel machine steel rope 1, then piston rod 6 aprowl enters in the cylinder block 7 under the action of gravity of beam assembly 5, close shutoff valve 10 again after piston rod 6 arrives bottom of stroke, then the upper and lower chamber oil circuit of cylinder block 7 is shut, and sees Fig. 3; At this moment, promote loop wheel machine steel rope 1, because of the upper and lower chamber oil circuit of cylinder block 7 is shut, movable central sill assembly 5 and through beam assembly 12 integral body are raised, about bucket lobe 13 by with the hinge pin axis of strut 8 and through beam assembly 12 to relatively rotate beginning closed, grab bucket is carried out and is grabbed goods, sees Fig. 4; When the fully loaded grab bucket rises to the unloading sky, open shutoff valve 10, at this moment, the upper and lower chamber oil circuit conducting of cylinder block 7, loadage, about under the weight effect of bucket lobe 13 weight and through beam assembly 12, cylinder block 7 moves downward with through beam assembly 12, piston rod 6 is drawn out in cylinder block, about bucket lobe 13 rotate by pole pair and begin to open with the hinge pin axis of strut 8 and through beam assembly 12, grab bucket realizes unloading, sees Fig. 5.

Claims

1, idle fluid control is opened single rope grab in the air, comprise hoist rope mechanism, deck beam assembly, movable central sill assembly, through beam assembly, two struts and about the lobe that struggles against; Wherein be connected by hinge pin axis respectively between the top of the outside of the upper end of strut and deck beam assembly, lower end and bucket lobe, bucket lobe and the through beam assembly, making it becomes the four-bar mechanism that can do relative motion, it is characterized in that:

Also comprise a pair of hydraulic ram, a pair of cylinder block (7) is adjacent with two struts (8) respectively, its underpart is located on the through beam assembly, the overhanging end of piston rod (6) is connecting movable central sill assembly (5), the upper and lower oil pocket sidewall of two cylinder blocks (7) is connecting the high pressure arm respectively, two high pressure arms of two upper oil cavities are connecting an end of high pressure fuel pipe (11) by tee connection, two high pressure arms of two lower oil cavities are connecting the other end of high pressure fuel pipe (11) by tee connection, and high pressure fuel pipe (11) middle part is provided with shutoff valve (10).