CN201587822U

CN201587822U - Safety steel wire rope device of variable-amplitude mechanism with single-arm frame steel-wire rope soft variable-amplitude door

Info

Publication number: CN201587822U
Application number: CN 200920299660
Authority: CN
Inventors: 余红涛; 王家正
Original assignee: JIANGSU HUACHENG HEAVY INDUSTRY Co Ltd
Current assignee: JIANGSU HUACHENG HEAVY INDUSTRY Co Ltd
Priority date: 2009-12-28
Filing date: 2009-12-28
Publication date: 2010-09-22
Anticipated expiration: 2019-12-28

Abstract

The utility model relates to a safety steel wire rope device of a variable-amplitude mechanism with a single-arm frame steel-wire rope soft variable-amplitude door, belonging to the technical field of crane machinery. The device comprises a steel wire rope (5), both ends of the steel wire rope (5) are provided with a sleeve ring (3) and a joint (4) so that the steel wire rope is made into a pull cable with both ends capable of being connected with other positions; the heads of an arm bracket (11) and a shaft strut (12) of the variable-amplitude mechanism with the single-arm frame steel-wire rope soft variable-amplitude door are respectively provided with an arm bracket head pull ear (2) and a shaft strut head pull ear (1), and two ends of the pull cable are respectively connected with the arm bracket head pull ear (2) and the shaft strut head pull ear (1) through an unloading button (6) to form the safety steel wire rope device. As the scheme that a set of safety steel wire rope and variable-amplitude steel wire rope run synchronously is adopted, when the variable-amplitude steel wire rope suddenly and accidently breaks, the safety steel wire rope is immediately pulled to prevent the arm bracket from falling onto persons or objects below the device, thus playing a security protection role.

Description

The safety lanyard rope device of the soft luffing door of single armed frame steel rope machine luffing mechanism

(1) technical field

The utility model relates to the soft luffing door of a kind of single armed frame steel rope machine, is specifically related to the safety lanyard rope device of the soft luffing door of a kind of single armed frame steel rope machine luffing mechanism.The technical field that belongs to elevator machinery.

(2) background technology

The soft luffing door of single armed frame steel rope machine is applicable to the Ship Building and Repairing enterprise that need carry out the breakbulk hoisting operation.It adopts the rope compensation method to make the deformation trace of main hook in the amplitude changing process near horizon.Because adopt the form of the soft luffing of steel rope, it is adapted to typhoon especially area and coastal dock frequently takes place.In order to resist typhoon, jib can fall to the harbour face, greatly facilitated daily maintaining.

In order to finish the carrying task of breakbulk in the whole amplitude range, the door machine needs frequently to carry out in the course of the work the luffing operation.The luffing of the soft luffing door of straight-arm frame steel rope machine is to realize that by means of the form that roll device drives steel rope its structure as shown in Figure 1.But there is a kind of potential safety hazard in this kind luffing mode: in case the unexpected fracture of luffing steel rope, crane arm is inevitable to be thrown at once, probably will cause the wounded or disabled accident of great economic loss and personnel.Tracing it to its cause, is when passing in and out assembly pulley and roll device owing to the luffing steel rope, except that producing tensile stress, also has extruding, bending, contacts and reverse equal stress.Facts have proved, the alternating bending of steel rope and repeatedly the metal fatigue that caused of extruding be the major cause that steel rope destroys.When alternating bending, extruding, when friction reaches certain number of times, luffing steel rope cover wire is because at first fracture of flexural fatigue and wearing and tearing.The suffered pulling force of other steel wire that does not fracture just will increase, tired and just play further of wearing and tearing, thus fracture of wire speed is accelerated gradually.When the fracture of wire amount reached some, steel rope just can not continue to use.At this moment, if the safety inspection work of luffing steel rope is not in place, just will produce the consequence of the unexpected fracture of steel rope.

(3) summary of the invention

The purpose of this utility model is to remedy the deficiency of the soft luffing of above-mentioned straight-arm frame steel rope, provide a kind of when the unexpected fracture suddenly of luffing steel rope, still can stop the safety lanyard rope device of the soft luffing door of the single armed frame steel rope machine luffing mechanism that crane arm throws suddenly.

The purpose of this utility model is achieved in that the safety lanyard rope device of the soft luffing door of a kind of single armed frame steel rope machine luffing mechanism, described device comprises steel rope, the two ends of steel rope are provided with the collar and joint, like this steel rope is made two ends can with other position bonded assembly drag-line; Installing the jib head additional at the jib head of the soft luffing door of described single armed frame steel rope machine luffing mechanism and Shears head respectively draws ear and Shears head to draw ear, draw ear and Shears head to draw ear to couple together at described drag-line two ends and jib head respectively by shackle, just formed a cover safety lanyard rope device.

The beneficial effects of the utility model are:

The utility model overlaps insurance steel cable and the synchronized operation of luffing steel rope by employing one, when the unexpected fracture suddenly of luffing steel rope, and the passive at once tension of insurance steel cable, the prevention jib is pounded people or object downwards, so plays the effect of insurance.Strengthened the safety in use of such machine.

(4) description of drawings

Fig. 1 is the overall structure scheme drawing of the soft luffing door of single armed frame steel rope machine luffing mechanism in the past.

Fig. 2 is an insurance steel cable apparatus structure scheme drawing of the present utility model.

Fig. 3 is a left end position enlarged drawing among Fig. 2.

Fig. 4 is a right-hand member position enlarged drawing among Fig. 2.

Fig. 5 is the A-A cut-away view of Fig. 2.

Fig. 6 is the B-B cut-away view of Fig. 2.

Fig. 7 is for adopting the soft luffing door of the single armed frame steel rope machine luffing mechanism scheme drawing of the utility model insurance steel cable dress.

Reference numeral among the figure:

The Shears head draws ear 1

The jib head draws ear 2

The collar 3

Joint 4

Steel rope 5

Shackle 6

Safety lanyard rope device 7

Roll device 8

Luffing steel rope 9

Crane arm 10

Jib 11

Shears 12.

(5) specific embodiment

Referring to Fig. 2～6, Fig. 2 is an insurance steel cable apparatus structure scheme drawing of the present utility model.Fig. 3 is a left end position enlarged drawing among Fig. 2.Fig. 4 is a right-hand member position enlarged drawing among Fig. 2.Fig. 5 is the A-A cut-away view of Fig. 2.Fig. 6 is the B-B cut-away view of Fig. 2.By Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 as can be seen, safety lanyard rope device 7 of the present utility model comprises steel rope 5, and the two ends of steel rope 5 are provided with the collar 3 and joint 4, like this steel rope is made two ends can with other position bonded assembly drag-line; Installing the jib head additional at jib 11 heads of the soft luffing door of described single armed frame steel rope machine luffing mechanism and Shears 12 heads respectively draws ear 2 and Shears head to draw ear 1, draw ear 2 and Shears head to draw ear 1 to couple together at described drag-line two ends and jib head respectively by shackle 6, just formed a cover safety lanyard rope device.

Referring to Fig. 7, Fig. 7 is for adopting the soft luffing door of the single armed frame steel rope machine luffing mechanism scheme drawing of the utility model insurance steel cable dress.As seen from Figure 7, adopt the soft luffing door of the single armed frame steel rope machine luffing mechanism of the utility model insurance steel cable dress, comprise roll device 8, luffing steel rope 9, safety lanyard rope device 7, crane arm 10, jib 11 and Shears 12, roll device 8 links to each other with an end of luffing steel rope 9, the other end of luffing steel rope 9 links to each other with crane arm 10, one end of safety lanyard rope device 7 links to each other with Shears 12 heads, and the other end of safety lanyard rope device 7 links to each other with jib 11 heads.

Claims

1. the safety lanyard rope device of the soft luffing door of a single armed frame steel rope machine luffing mechanism, it is characterized in that described device comprises steel rope (5), the two ends of steel rope (5) are provided with the collar (3) and joint (4), like this steel rope is made two ends can with other position bonded assembly drag-line; Installing the jib head additional at jib (11) head of the soft luffing door of described single armed frame steel rope machine luffing mechanism and Shears (12) head respectively draws ear (2) and Shears head to draw ear (1), draw ear (2) and Shears head to draw ear (1) to couple together at described drag-line two ends and jib head respectively by shackle (6), just formed a cover safety lanyard rope device.