CN201560073U

CN201560073U - Telescopic crane with rotatable cantilever beam

Info

Publication number: CN201560073U
Application number: CN200920250251XU
Authority: CN
Inventors: 张秀坤
Original assignee: Tianjin Hoisting Equipment Co Ltd
Current assignee: Tianjin Hoisting Equipment Co Ltd
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2010-08-25
Anticipated expiration: 2019-11-13

Abstract

The utility model relates to a telescopic crane with a rotatable cantilever beam. The crane is characterized in that the rotatable cantilever beam and a slewing mechanism thereof are mounted at the upper end of an upright column, a guide rail is installed at the lower side edge of the cantilever beam, the upright column is formed by abutting an upper upright column with a lower upright column, and an annular track is mounted at the abutting positions of the upper upright column and the lower upright column; the slewing mechanism is a case body, a rotation frame welded with the cantilever beam is mounted at the upper end of the case body, two rollers rolling along the annular track are installed inside the case body, and same sides of the rollers are respectively provided with a large gear with a same amount of teeth; and a speed reducer is mounted on the case body, and an output small gear simultaneously meshed with the two large gears is installed on an output shaft of the speed reducer. A telescopic beam is installed on the guide rail of the cantilever beam, an electric hoist is fixedly mounted at the front end of the telescopic beam, and the rear end of the telescopic beam is provided with two rollers rolling along the upper surface of the guide rail of the cantilever beam and a speed reducer for driving the rollers. Therefore, the crane has lengthened hoisting stroke of a suspension hook, resolves the problem of short stroke of a crane with an ordinary cantilever beam, and has the advantages of compact, light and exquisite structure, small occupied space and low cost.

Description

Cantilever beam rotary telescopic crane

Technical field

The utility model relates to a kind of cantilever beam rotary telescopic crane.

Background technology

The cantilever beam rotary crane generally is used to lift less weight at present.Common cantilever beam rotary crane structure is: surface-based column, in the column upper end rotatable cantilever beam and swing type mechanism thereof are installed, and at the cantilever beam lower side guide rail is installed, the electric block that moves along guide rail is installed on guide rail.The electric block dolly of the hoisting crane of this structure only along the operation of spiral arm beam, is limited by cantilever beam length, thereby the lifting stroke is short; Therefore in order to strengthen stroke, often with the cantilever beam lengthening, the column overstriking, though solved the increase route problem like this, but have that increase in volume, cost increase, heaviness, occupy the bigger shortcoming in space.

Summary of the invention

The utility model provides a kind of cantilever beam rotary telescopic crane that prolongs suspension hook lifting stroke for solving the technical matters that exists in the known technology.

The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is:

A kind of cantilever beam rotary telescopic crane, comprise column, be installed in the rotatable cantilever beam and the swing type mechanism thereof of column upper end, be installed in the guide rail of cantilever beam lower side, and the electric block that moves along guide rail, described column is formed by upper pillar stand and lower pillar stand butt joint, upper pillar stand and lower pillar stand joint are equipped with circular orbit, described swing type mechanism has a casing, the casing upper end is equipped with the swivel mount with the cantilever beam welding, two bearing pins that parallel are installed in the casing, the roller that rolls along circular orbit all is installed on two bearing pins, each roller the same side all is equipped with the big gear wheel of the identical number of teeth, reductor is installed on the casing, is equipped with on the speed reducer output shaft and two big gear wheels while ingear output pinion.

The utility model can also adopt following technical scheme:

Between described electric block and the cantilever beam guide rail telescopic girder is installed, electric block is fixed on the front end of telescopic girder, the rear end of telescopic girder is equipped with two reductors that rotate along the roller and the driving rolls thereof of the rolling of cantilever beam guide rail upper surface, and the telescopic girder rear end also is equipped with the bottom roller that rolls along cantilever beam guide rail lower surface.

Advantage and the good effect that the utlity model has are:

Owing between electric block and cantilever beam guide rail, telescopic girder is installed, prolonged suspension hook lifting stroke by telescopic girder, and can be along the hand of rotation avoiding barrier, having solved common cantilever beam hoisting crane increases the problem of stroke, and the utility model also has compact conformation, light and handy, occupation of land is little, cost is low advantage in addition.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is swing type mechanism 4 structural representations among Fig. 1;

Fig. 3 is the birds-eye view of Fig. 2.

Among the figure: 1, lower pillar stand; 2, ring-shaped guide rail; 3, upper pillar stand; 4, swing type mechanism; 5, swivel mount; 6, control panel; 7, cantilever beam; 8, guide rail; 9, telescopic girder; 10, roller; 11, electric block; 12, bottom roller; 13, reductor; 14, screw; 15, roller; 16, bearing pin; 17, casing; 18, output shaft; 19, output pinion; 20, screw; 21, reductor; 22, big gear wheel.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

As Fig. 1～shown in Figure 3, lower pillar stand 1 is fixed with ground, in the lower pillar stand upper end upper pillar stand 3 is installed, and at upper pillar stand and lower pillar stand joint circular orbit 2 is installed, and rotatable cantilever beam 7 and swing type mechanism 4 thereof are installed on upper pillar stand.Described swing type mechanism has a casing 17, the casing upper end is equipped with the swivel mount 5 with the cantilever beam welding, two bearing pins that parallel 16 are installed in the casing, the roller 15 that rolls along circular orbit all is installed on two bearing pins, each roller the same side all is equipped with the big gear wheel 22 and the tightening screw 14 of the identical number of teeth, by screw 20 reductor 21 is installed on casing, is equipped with on the speed reducer output shaft 18 and two big gear wheels while ingear output pinion 19.Described cantilever beam lower side is equipped with guide rail 8, on guide rail, be movably installed with telescopic girder 9, the front end of telescopic girder is equipped with electric block 11, the rear end of telescopic girder is equipped with two reductors 13 that rotate along the roller 10 and the driving rolls thereof of the rolling of cantilever beam guide rail upper surface, and the telescopic girder rear end also is equipped with the bottom roller 12 that rolls along cantilever beam guide rail lower surface.The control panel 6 of this hoisting crane is installed on the cantilever beam.Like this, owing between electric block and cantilever beam guide rail, telescopic girder is installed, prolonged suspension hook lifting stroke by telescopic girder, and can be along the hand of rotation avoiding barrier, having solved common cantilever beam hoisting crane increases the problem of stroke, and the utility model also has compact conformation, light and handy, occupation of land is little, cost is low advantage in addition.

Claims

1. cantilever beam rotary telescopic crane, comprise column, be installed in the rotatable cantilever beam and the swing type mechanism thereof of column upper end, be installed in the guide rail of cantilever beam lower side, and the electric block that moves along guide rail, it is characterized in that: described column is formed by upper pillar stand and lower pillar stand butt joint, upper pillar stand and lower pillar stand joint are equipped with circular orbit, described swing type mechanism has a casing, the casing upper end is equipped with the swivel mount with the cantilever beam welding, two bearing pins that parallel are installed in the casing, the roller that rolls along circular orbit all is installed on two bearing pins, each roller the same side all is equipped with the big gear wheel of the identical number of teeth, reductor is installed on the casing, is equipped with on the speed reducer output shaft and two big gear wheels while ingear output pinion.

2. cantilever beam rotary telescopic crane according to claim 1, it is characterized in that: between described electric block and the cantilever beam guide rail telescopic girder is installed, electric block is fixed on the front end of telescopic girder, the rear end of telescopic girder is equipped with two reductors that rotate along the roller and the driving rolls thereof of the rolling of cantilever beam guide rail upper surface, and the telescopic girder rear end also is equipped with the bottom roller that rolls along cantilever beam guide rail lower surface.