CN201201867Y

CN201201867Y - Double hook hoisting device for crane

Info

Publication number: CN201201867Y
Application number: CN 200820052641
Authority: CN
Inventors: 刘劲松; 王志锋; 张良栋
Original assignee: Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2008-03-25
Filing date: 2008-03-25
Publication date: 2009-03-04
Anticipated expiration: 2018-03-25

Abstract

The utility model discloses a dual-hook hoisting device for cranes, which comprises a boom head (7), wherein the upper pulley shaft (15) of the boom head (7) is mounted with two guide pulleys (3, 8), the lower pulley shaft (16) of the boom head (7) is mounted with two guide pulleys (4, 9) and a fixed pulley base (5) which can swing around the lower pulley shaft (16), the fixed pulley base (5) is mounted with two fixed pulley groups (10, 11) two hoisting steel wires (2, 1) are respectively connected with the pulley groups (6, 13z0 on the hooks (12, 14) via the upper and the lower guide pulleys (3, 8, 4, 9) and the fixed pulley groups (10, 11) at same side, to form two hoisting devices.

Description

A kind of hoisting crane double hook lifting appliance

Technical field

The utility model relates to a kind of lifting appliance, particularly relates to the double hook lifting appliance that a kind of crane arm is used.

Background technology

Arm is the important critical component of car hosit, and the version of arm head is most important for the operation of hoisting crane.But at present the arm head used of hoisting crane all adopts the version of single fixed pulley group, can only adopt in operation process that monovolume is raised, the operation form of single hook.Carry out the operating mode (the particularly lifting operation of slender rod piece) of special operation for needs, there is significant limitation in this kind form, because require rod member two ends height is carried out in various degree adjustment for the lifting operation of slender rod piece, the fixed form of slender rod piece is difficult to determine simultaneously, when adopting the single hook operation because the limitation of equipment, can not adjust the skyborne position of elongate rod, can not satisfy the technical requirements of special operation well.

The utility model content

Technical problem to be solved in the utility model provides a kind of can the adjustment aerial lifting object location, can make simultaneously that hoisting operation safety of operation, operation are reliable, the hoisting crane double hook lifting appliance of high efficiency.

In order to solve the problems of the technologies described above, the hoisting crane that the utility model provides double hook lifting appliance, comprise the arm head, two leading sheaves are housed on the top sheave axle of described arm head, two leading sheaves and one are housed on the downslide wheel shaft of described arm head can be around the fixed pulley bearing of described downslide wheel shaft swing, two groups of fixed pulley groups are housed on the described fixed pulley bearing, two groups of steel wire ropes for hoisting respectively by be in the same side described on, following leading sheave is connected with the assembly pulley of a suspension hook respectively with the fixed pulley group, forms a cover jack up unit respectively.

Adopt the hoisting crane double hook lifting appliance of technique scheme, during hoisting operation, by the upper and lower leading sheave of arm head, the fixed pulley group by homonymy is connected with the assembly pulley of a suspension hook respectively two groups of steel wire ropes for hoisting of hoisting crane then respectively, forms a cover jack up unit respectively.Two groups of jack up units can single movement, but also synchronization action, the fixed pulley group can be around the swing of downslide wheel shaft simultaneously, and fixed pulley axis is vertical substantially with horizontal surface in the lifting process, satisfies the technical requirements of extraordinary hoisting operation.

Double hook lifting appliance of the present utility model mainly contains following effect:

1, great variation has taken place in the double hook lifting appliance on the lifting mode of hoisting crane, a kind of diverse lifting method (with respect to single hook apparatus for work of general hoisting crane) occurred.

2, the double hook lifting appliance is particularly suitable for the lifting of slender rod piece, can satisfy the technical requirements of job that requires special skills.

In sum, the utility model is a kind of can the adjustment aerial lifting object location, can make simultaneously that hoisting operation safety of operation, operation are reliable, the hoisting crane double hook lifting appliance of high efficiency.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is that the utility model double hook lifting appliance master looks scheme drawing;

Fig. 2 is that the utility model double hook lifting appliance A is to scheme drawing.

The specific embodiment

Referring to Fig. 1 and Fig. 2, right leading sheave 8 on left leading sheave 3 and one is being housed on the top sheave axle 15 of arm head 7 on one, a bottom left leading sheave 4 and a bottom right leading sheave 9 are housed on the downslide wheel shaft 16 of arm head 7, one can be around the fixed pulley bearing 5 of downslide wheel shaft 16 swings, one group of left side fixed pulley group 10 and one group of right fixed pulley group 11 are housed on the fixed pulley bearing 5, one group of left side steel wire ropes for hoisting 2 is by being in left leading sheave 3 on the same side, bottom left leading sheave 4 is connected with the left chain wheel group 6 of left suspension hook 12 with left fixed pulley group 10, form a cover jack up unit, one group of right steel wire ropes for hoisting 1 is by being in right leading sheave 8 on the same side, bottom right leading sheave 9 is connected with the right pulley group 13 of right suspension hook 14 with right fixed pulley group 11, forms a cover jack up unit.

Referring to Fig. 1 and Fig. 2, by spurring the up-and-down movement that left steel wire ropes for hoisting 2 or right steel wire ropes for hoisting 1 drive left suspension hook 12 or right suspension hook 14 respectively, from reaching the purpose that hoists and descend weight 17, right steel wire ropes for hoisting 1 can spur synchronously with left steel wire ropes for hoisting 2, also can spur separately, thereby reach the function of aerial adjustment weight 17 positions.

Claims

1, a kind of hoisting crane double hook lifting appliance, comprise the arm head, it is characterized in that: on the top sheave axle (15) of described arm head (7), two leading sheaves (3 are housed, 8), on the downslide wheel shaft (16) of described arm head (7), two leading sheaves (4 are housed, 9) and one can be around the fixed pulley bearing (5) of described downslide wheel shaft (16) swing, two groups of fixed pulley groups (10 are housed on the described fixed pulley bearing (5), 11), two groups of steel wire ropes for hoisting (2,1) respectively by be in the same side described on, following leading sheave (3,8,4,9) and fixed pulley group (10,11) respectively with a suspension hook (12,14) assembly pulley (6,13) connect, form a cover jack up unit respectively.