CN214653248U

CN214653248U - Pulley rope winding switching device for head of double four-bar crane

Info

Publication number: CN214653248U
Application number: CN202120706407.1U
Authority: CN
Inventors: 陈春春; 路强; 田昭; 万锦旗; 关添海; 孙鸿; 戴毅斌; 向明; 王彦彪
Original assignee: Nanjing Port Machinery & Heavy Industry Manufacture Co ltd
Current assignee: Nanjing Port Machinery & Heavy Industry Manufacture Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-09
Anticipated expiration: 2031-04-08

Abstract

The utility model discloses a pulley wiring auto-change over device for two four-bar linkage hoist heads relates to two four-bar linkage hoist technical field. This pulley wiring auto-change over device includes: the winch comprises a winch arranged on an arm support of the double-four-bar crane, a winch steel wire rope arranged on the winch, a first reversing wheel, a second reversing wheel and a hook head arranged at the end part of the winch steel wire rope, wherein the winch steel wire rope is wound on a winding drum of the winch, and the end part of the winch steel wire rope sequentially penetrates through the first reversing wheel and the second reversing wheel. The head pulley rope winding switching device changes four original lifting steel wire ropes which are arranged in a straight line into trapezoidal arrangement, and is in butt joint with four connectors on a container lifting appliance, so that the crane is convenient to switch between a grab bucket and a container working condition, and the safety is improved.

Description

Pulley rope winding switching device for head of double four-bar crane

Technical Field

The utility model relates to a two four-bar linkage hoist technical field specifically, relate to a pulley wiring auto-change over device for two four-bar linkage hoist heads.

Background

The double four-bar crane is based on a portal crane, a set of small four-bar linkage is additionally arranged under a boom system boom and a elephant nose bridge, the purpose is to enable four original hoisting steel wire ropes on one cross section to be changed in winding direction, a trapezoidal state is formed, the crane is stable and does not shake when being used for carrying out container operation working conditions, a lifting appliance can be accurately positioned, the working efficiency is improved, the crane needs to be replaced by a simple tool such as a handle hook manually, time and labor are wasted, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model discloses a head pulley wiring auto-change over device for two four-bar linkage cranes, this head pulley wiring auto-change over device will be originally four play to rise wire rope that a word was arranged to open, changes trapezoidal arranging into, and four joint docks on the container spreader, make the hoist switch the convenience between grab bucket and container operating mode, improve the security.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a head pulley roping switching apparatus for a two four bar linkage crane comprising: the winch comprises a winch arranged on an arm support of the double-four-bar crane, a winch steel wire rope arranged on the winch, a first reversing wheel, a second reversing wheel and a hook head arranged at the end part of the winch steel wire rope, wherein the winch steel wire rope is wound on a winding drum of the winch, and the end part of the winch steel wire rope sequentially penetrates through the first reversing wheel and the second reversing wheel.

Further, the center of the winding drum of the winch is superposed with the center of the arm support of the double four-bar crane.

Further, the winch is arranged on an arm support overhauling platform of the double four-bar crane.

Furthermore, the hook head is fixedly connected with the end part of the hoisting steel wire rope through a rope clamp.

Furthermore, the first reversing wheel and the second reversing wheel are respectively and fixedly connected with lifting lugs on the double four-bar crane.

Furthermore, the first reversing wheel and the second reversing wheel are connected with the lifting lug through shackles.

Furthermore, the hook head is arranged on the outer side of a lifting steel wire rope descending along a pulley like the nose bridge head on the double four-bar crane.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses head pulley wiring auto-change over device is through first reverse wheel, the winding wire rope switching-over on the second reverse wheel will the hoist engine, hook the wire rope that rises that needs change the wiring direction with the gib head of winding wire rope tip, start the hoist engine, make the gib head on the winding wire rope can follow the wire rope that rises that roof beam head pulley descends on two four-bar crane and pull back to two four-bar crane's compensation pulley on, four play to rise wire rope that will originally be the I-shaped row of opening, change trapezoidal the arranging into, it is convenient to make two four-bar crane switch between grab bucket and container operating mode, adopt electric tool, need not the manual work and draw, the security improves.

Drawings

FIG. 1 is a schematic structural view of a pulley rope-winding switching device of a double four-bar crane head according to the present invention;

fig. 2 is a schematic view of the hook head of the present invention;

FIG. 3 is a schematic view of the present invention in a dual four-bar linkage crane;

the device comprises a winch 1, a first reversing wheel 2, a second reversing wheel 3, a hoisting steel wire rope 4, a hook 5 and a rope clamp 6.

Detailed Description

Referring to fig. 1-2, for the structure schematic diagram of the pulley wiring switching device of the head of the dual four-bar crane of the present invention, the head pulley wiring switching device includes: the hoisting device comprises a hoisting machine 1 arranged on an arm support of the double four-bar crane, a hoisting steel wire rope 4 arranged on the hoisting machine, a first reversing wheel 2, a second reversing wheel 3 and a hook head 5 arranged at the end part of the hoisting steel wire rope, wherein the hook head 5 is fixedly connected with the end part of the hoisting steel wire rope 4 through a rope clamp 6, the hook head 5 is arranged on the outer side of a hoisting steel wire rope descending along a head pulley of a trunk of the double four-bar crane, one of the hoisting steel wire ropes is taken through a hook head 5 and is pulled back to a compensation pulley on the double four-bar crane, and the direction change of the hoisting steel wire rope is realized. The hoisting steel wire rope 4 is wound on a winding drum of the hoisting machine 1, the end part of the hoisting steel wire rope 4 sequentially passes through the first reversing wheel 2 and the second reversing wheel 3 to realize the reversing of the hoisting steel wire rope 4, and the first reversing wheel 2 and the second reversing wheel 3 are respectively and fixedly connected with lifting lugs on the double-four-bar crane through shackles. The winch 1 is arranged on an arm frame maintenance platform of the double-four-bar crane, the center of a winding drum of the winch 1 is overlapped with the center of an arm frame of the double-four-bar crane, and the deviation angle of the winding-out of a steel wire rope of the winch is not more than 3 degrees.

As fig. 3 is the utility model discloses user state schematic diagram in two four-bar linkage cranes, the utility model discloses a working process specifically is:

(1) before using a pulley rope winding switching device at the head of the double four-bar crane, firstly receiving the amplitude variation of the double four-bar crane to the minimum amplitude, at the moment, positioning a small four-bar compensation pulley above a boom rope adjusting platform, dismantling a compensation pulley rope blocking device, dismantling a lifting hook at the tail end of a lifting steel wire rope, starting a lifting mechanism, descending the steel wire rope to cross a beam of the trunk head to vertically extend to a wharf plane;

(2) a hoisting steel wire rope 4 on a hoisting machine 1 generates a sliding fulcrum of the hoisting steel wire rope 4 through a lifting lug on a double four-bar crane arm support and a first reversing wheel 2 and a second reversing wheel 3 which are arranged on the lifting lug, a hook head 5 at the end part of the hoisting steel wire rope 4 extends to the outer side of a hoisting steel wire rope which descends along a pulley like the head part of a nose bridge on the double four-bar crane, and hooks one hoisting steel wire rope needing to be redirected;

(3) starting a winch to take up a rope 4, hooking the hook head 5 in the above step to one of four lifting steel wire ropes which are arranged in a straight line, and pulling back the hook head to a compensation pulley to complete the redirection of one lifting steel wire rope;

(4) and (4) changing the position of a first reversing wheel in the head pulley rope winding switching device on the arm support of the double-four-bar crane, repeating the steps (2) - (3) and finishing the redirection of another hoisting steel wire rope in the four hoisting steel wire ropes.

The pulley wiring switching device at the head of the double four-bar crane changes two of the lifting steel wire ropes to the back, and four steel wire ropes are arranged in a line like the line formed by winding the pulley at the head of the nose bridge and are in trapezoidal arrangement, and the relative shape can be kept unchanged at any working amplitude, so that the horizontal motion of a lifting appliance is ensured.

Claims

1. A sheave roping switching arrangement for use in a dual four bar crane head comprising: the hoisting device comprises a hoisting machine (1) arranged on an arm support of the double-four-bar crane, a hoisting steel wire rope (4) arranged on the hoisting machine, a first reversing wheel (2), a second reversing wheel (3) and a hook head (5) arranged at the end part of the hoisting steel wire rope, wherein the hoisting steel wire rope (4) is wound on a winding drum of the hoisting machine (1), and the end part of the hoisting steel wire rope (4) sequentially penetrates through the first reversing wheel (2) and the second reversing wheel (3).

2. The device for switching the rope winding of the pulley for the head of the double four-bar crane according to claim 1, characterized in that the center of the drum of the hoist (1) coincides with the center of the boom of the double four-bar crane.

3. The device for switching the rope winding of the pulley for the head of the double four-bar crane according to claim 1, characterized in that the winch (1) is arranged on a boom maintenance platform of the double four-bar crane.

4. The device for switching the rope winding of the pulley of the head of the double four-bar crane according to claim 1, characterized in that the hook head (5) is fixedly connected with the end of the hoisting rope (4) through a rope clamp (6).

5. The pulley roping switching device for the head of a double four-bar crane according to claim 1, wherein the first diverting pulley (2) and the second diverting pulley (3) are fixedly connected with the lifting lug of the double four-bar crane respectively.

6. The pulley roping switching arrangement for a double four-bar crane head according to claim 5, characterised in that said first diverting pulley (2) and said second diverting pulley (3) are each connected to a lifting lug by means of a shackle.

7. The apparatus for switching the rope winding of a pulley for a head of a twin four-bar crane according to claim 1, wherein the hook (5) is provided outside a hoisting wire rope descending along a pulley like a nose bridge head on the twin four-bar crane.