CN2364010Y

CN2364010Y - Hydraulic arm-folding crane

Info

Publication number: CN2364010Y
Application number: CN 99206551
Authority: CN
Inventors: 丁飞
Original assignee: JOB MACHINERY PLANT ZHENGZHOU RAILWAY BUREAU
Current assignee: JOB MACHINERY PLANT ZHENGZHOU RAILWAY BUREAU
Priority date: 1999-03-26
Filing date: 1999-03-26
Publication date: 2000-02-16
Anticipated expiration: 2009-03-26

Abstract

The utility model relates to a hydraulic arm folding crane which comprises a suspended arm, an upright post and a revolving base, wherein the front end of the suspended arm is provided with a suspension hook; the lower end of the upright post is connected with the revolving base, and the upper end of the upright post is hinged with one end of the suspended arm which is composed of a folding arm and a telescopic arm which are hinged with each other. The lower end of a folding arm oil cylinder is hinged with the lower end of the upright post, and the upper end of the folding arm oil cylinder is hinged with a connection point on the folding arm. The back end of an amplitude-changeable oil cylinder is hinged with the connection point, and the front end of the amplitude-changeable oil cylinder is hinged with the telescopic arm in which a telescopic oil cylinder is sheathed. The suspended arm of the utility model not only can be telescopic, but also can be folded and the suspended arm is installed at one end of a track car to satisfy sharp work requirements.

Description

A kind of hydraulic pressure folding arm hoisting crane

The utility model belongs to a kind of hoisting crane, particularly relates to a kind of and the matching used hoisting crane of railroad track car.

At present with the matching used hoisting crane of railroad track car, arm can only stretch, can not folding arm, so volume is bigger in the process of walking, the operation inconvenience.Particularly when need were promptly rushed towards the scene of the accident, the rail vehicle moving velocity was slower, can not satisfy the sharp work requirement.

The purpose of this utility model is providing the both flexibles of a kind of arm, hydraulic pressure folding arm hoisting crane that again can folding arm after the operation.

For achieving the above object, the utility model adopts following technical scheme: a kind of hydraulic pressure folding arm hoisting crane, comprise arm, column and rotary table, and the arm front end has suspension hook, column lower end is connected with rotary table, upper end and arm one end are hinged, and arm is by folding arm and telescopic boom is hinged forms, and folding arm oil cylinder lower end and column lower end are hinged, the upper end is hinged with the point of attachment on the folding arm, amplitude oil cylinder rear end and point of attachment are hinged, and front end and telescopic boom are hinged, are set with telescopic oil cylinder in the telescopic boom.

Telescopic boom is made up of three joint rectangular box intussusceptions, and telescopic oil cylinder is enclosed within the middle of the casing arm, and its two ends bearing pin and middle hinge shaft are connected with three joint casing arms respectively.

Because arm of the present utility model is made up of folding arm and telescopic boom, folding arm and telescopic boom are again respectively by folding arm oil cylinder and telescopic oil cylinder control, therefore, telescopic boom withdrawal after the operation, folding arm is folding downwards under the control of folding arm oil cylinder, makes the smaller volume of whole hydraulic pressure folding arm hoisting crane, has both kept optimum balance like this when rail vehicle travels, simultaneously can improve moving velocity again, satisfy the requirement of sharp work.

Further specify the utility model below in conjunction with accompanying drawing and by embodiment:

Accompanying drawing is depicted as the structural representation of embodiment.

Embodiment: arm is by folding arm 1 and 2 hinged compositions of telescopic boom, and telescopic boom 2 front ends have suspension hook, and telescopic boom 2 is made up of three joint rectangular box intussusceptions, and telescopic oil cylinder 3 is sleeved in the middle of the casing arm, and its two ends bearing pin and middle hinge shaft save the casing arms and are connected with three respectively.Column 4 upper ends and folding arm 1 rear end are hinged, and the lower end is connected with rotary table 5.There is a point of attachment 6 at folding arm 1 rear portion, and folding arm oil cylinder 7 upper ends and point of attachment 6 are hinged, and lower end and rotary table 5 are hinged, and amplitude oil cylinder 8 rear ends and point of attachment 6 are hinged, and front end and telescopic boom 2 rear ends are hinged.

Rotary table 5 is contained in rail vehicle one end, and the position of folding arm and telescopic boom is shown in dotted line position among the figure when not operation.During operation, by amplitude oil cylinder 8 and telescopic oil cylinder 3 controls the folding arm luffing is opened, telescopic boom stretches out, and can implement operation.

Claims

1, a kind of hydraulic pressure folding arm hoisting crane, comprise arm, column and rotary table, the arm front end has suspension hook, and column lower end is connected with rotary table, upper end and arm one end are hinged, it is characterized in that arm is by folding arm and telescopic boom is hinged forms, folding arm oil cylinder lower end and column lower end are hinged, the upper end is hinged with the point of attachment on the folding arm, amplitude oil cylinder rear end and point of attachment are hinged, and front end and telescopic boom are hinged, are set with telescopic oil cylinder in the telescopic boom.

2, hoisting crane as claimed in claim 1 is characterized in that, telescopic boom is made up of three joint rectangular box intussusceptions, and telescopic oil cylinder is enclosed within the middle of the casing arm, and its two ends bearing pin and middle hinge shaft are connected with three joint casing arms respectively.