阅读说明：本技术 一种起重机双起升装置及钢丝绳缠绕方法 (Double-lifting device of crane and steel wire rope winding method ) 是由 党修洵 王全营 张龙山 王江宽 姜甜 胡鸣尚 于 2019-10-30 设计创作，主要内容包括：本发明涉及一种起重机双起升装置及钢丝绳缠绕方法,包括卷筒组、吊梁和起重机小车,所述卷筒组包括第一卷筒和第二卷筒,所述第一卷筒下部设置有第一定滑轮组,所述第二卷筒下部设置有第二定滑轮组,第一卷筒与起重机小车之间设置有第一导向机构,第二卷筒与起重机小车之间设置有第二导向机构,所述第一导向机构和第二导向机构用于双起结构保持平衡,所述吊梁上对应设置有第一动滑轮组和第二动滑轮组,第一动滑轮组和第二动滑轮组与吊梁固定连接。本发明设置有双起升装置,通过改变钢丝绳的缠绕方式,实现起重机双起升机构之间的平衡,保证双起升机构能同步升降,减少事故风险,提高了钢丝绳使用寿命。(The invention relates to a double-lifting device of a crane and a steel wire rope winding method, which comprise a reel set, a lifting beam and a crane trolley, wherein the reel set comprises a first reel and a second reel, a first fixed pulley block is arranged at the lower part of the first reel, a second fixed pulley block is arranged at the lower part of the second reel, a first guide mechanism is arranged between the first reel and the crane trolley, a second guide mechanism is arranged between the second reel and the crane trolley, the first guide mechanism and the second guide mechanism are used for keeping balance of a double-lifting structure, a first movable pulley block and a second movable pulley block are correspondingly arranged on the lifting beam, and the first movable pulley block and the second movable pulley block are fixedly connected with the lifting beam. The double-lifting mechanism of the crane is provided with the double-lifting device, the balance between the double lifting mechanisms of the crane is realized by changing the winding mode of the steel wire rope, the synchronous lifting of the double lifting mechanisms is ensured, the accident risk is reduced, and the service life of the steel wire rope is prolonged.)

1. A double-lifting device of a crane comprises a reel set, a lifting beam (2) and a crane trolley, and is characterized in that the reel set comprises a first reel (101) and a second reel (102), the first reel (101) and the second reel (102) are correspondingly arranged at the upper end of the crane trolley, a first fixed pulley block (3) is arranged at the lower part of the first reel (101), a second fixed pulley block (4) is arranged at the lower part of the second reel (102), the first fixed pulley block (3) and the second fixed pulley block (4) are symmetrically arranged relative to the neutral line in the crane trolley, a first guide mechanism is arranged between the first reel (101) and the crane trolley, a second guide mechanism is arranged between the second reel (102) and the crane trolley, the first guide mechanism and the second guide mechanism are used for keeping balance of a double-lifting structure, a first movable pulley block (9) and a second movable pulley block (10) are correspondingly arranged on the lifting beam (2), the first movable pulley block (9) and the second movable pulley block (10) are fixedly connected with the hanging beam (2), and the first winding drum (101), the second winding drum (102), the first fixed pulley block (3), the second fixed pulley block (4), the first guide mechanism, the second guide mechanism, the first movable pulley block (9) and the second movable pulley block (10) are connected through a steel wire rope.

2. The double lifting device of a crane according to claim 1, wherein the first guiding mechanism comprises a first guiding pulley block (5) and a third guiding pulley block (6), the first guiding pulley block (5) is arranged in parallel with the lifting beam (2), the third guiding pulley block (6) is arranged perpendicular to the lifting beam (2), the second guiding mechanism comprises a second guiding pulley block (7) and a fourth guiding pulley block (8), the second guiding pulley block (7) is arranged in parallel with the lifting beam (2), the fourth guiding pulley block (8) is arranged perpendicular to the lifting beam (2), and the first guiding pulley block (5) and the third guiding pulley block (6), the second guiding pulley block (7) and the fourth guiding pulley block (8) are all fixedly connected with the frame of the crane trolley.

3. A double lifting device of a crane according to claim 2, characterized in that the first guide pulley block (5) and the second guide pulley block (7) are symmetrically arranged, and the third guide pulley block (6) and the fourth guide pulley block (8) are symmetrically arranged.

4. A crane twin hoist according to claim 1 characterised in that the wire ropes comprise a first (1101) and a second (1102) wire rope.

5. A method for winding a steel wire rope based on any one of the double hoisting devices of the crane as claimed in claims 1 to 4, comprising the following steps:

step 1: winding a first steel wire rope (1101) on a first winding drum (101) for fixing, then winding one end, far away from a second winding drum (102), of the first steel wire rope (1101) around a movable pulley of a first movable pulley block (9) to be connected with a fixed pulley of a first fixed pulley block (3), and sequentially and crosswise winding the movable pulley of the first movable pulley block (9) and the fixed pulley of the first fixed pulley block (3) on the first steel wire rope (1101);

step 2: winding an outgoing line of the last movable pulley of the first movable pulley block (9) on a third guide pulley block (6), and then connecting a second guide pulley block (7), so that a first steel wire rope (1101) is fixedly connected with a second winding drum (102) through the second guide pulley block (7), and the first steel wire rope (1101) forms a closed loop;

and step 3: winding a second steel wire rope (1102) on a second winding drum (102) for fixing, then winding one end, far away from the first winding drum (101), of the second steel wire rope (1102) around a movable pulley of a second movable pulley block (10) to be connected with a fixed pulley of a second fixed pulley block (4), and sequentially and crosswise winding the movable pulley of the second movable pulley block (10) and the fixed pulley of the second fixed pulley block (4) on the second steel wire rope (1102);

and 4, step 4: and winding the outgoing line of the last movable pulley of the second movable pulley block (10) on a fourth guide pulley block (8), and then connecting the first guide pulley block (5), so that the second steel wire rope (1102) is fixedly connected with the first winding drum (101) through the first guide pulley block (5), and the second steel wire rope (1102) forms a closed loop.

6. A method for winding a wire rope based on a dual hoist of claim 5, wherein the first wire rope (1101) is wound from the first reel (101) side to the second reel (102) side, and the second wire rope (1102) is wound from the second reel (102) side to the first reel (101) side.

Technical Field

The invention relates to the field of hoisting machinery, in particular to a double-hoisting device of a crane and a steel wire rope winding method.

Background

At present, two sets of independent hoisting mechanisms are generally arranged on the traditional double-hoisting-point and four-hoisting-point cranes, and steel wire ropes of the double hoisting mechanisms are wound independently. In order to ensure synchronous lifting of the double lifting mechanisms, the double lifting mechanisms are usually rigidly connected. If one set of hoisting mechanism breaks down, the hoisting mechanism of the crane stops working, and the whole crane cannot work normally, so that certain potential safety hazard exists.

Patent document 03141943.7 entitled container crane capable of lifting double 40 feet containers discloses a double-lifting structure, wherein the two double-lifting structures are mutually independent and are in rigid connection, and a steel wire rope is easy to break in the lifting process to cause accidents.

A method for winding a steel wire rope of a double-hoisting mechanism is disclosed in patent document CN101054152A entitled double-hoisting container crane, and can effectively reduce abrasion of the steel wire rope and other parts and prolong the service life of the steel wire rope, but the winding mode has a complex structure and potential safety hazard.

Disclosure of Invention

The invention provides a double-lifting device of a crane and a steel wire rope winding method, aiming at solving the problems that a lifting mechanism of the existing double-lifting-point and four-lifting-point crane is easy to cause accidents when in operation and the steel wire rope is easy to break.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a two play to rise device of hoist, includes reel group, hanging beam and monkey, the reel group includes first reel and second reel, first reel and second reel correspond and set up in the upper end of monkey, and first reel lower part is provided with first loose pulley, and second reel lower part is provided with the second loose pulley, first loose pulley and second loose pulley set up about the symmetry of monkey median line, are provided with first guiding mechanism between first reel and the monkey, are provided with the second guiding mechanism between second reel and the monkey, first guiding mechanism and second guiding mechanism are used for two structures of rising to keep balance, correspond on the hanging beam and be provided with first movable pulley group and second movable pulley group, first movable pulley group and second movable pulley group and hanging beam fixed connection, first reel, second reel are used for two structures of rising to keep balance, The first fixed pulley block, the second fixed pulley block, the first guide mechanism, the second guide mechanism, the first movable pulley block and the second movable pulley block are connected through a steel wire rope.

Furthermore, the first guide mechanism comprises a first guide pulley block and a third guide pulley block, the first guide pulley block is arranged in parallel with the hanging beam, the third guide pulley block is arranged in perpendicular to the hanging beam, the second guide mechanism comprises a second guide pulley block and a fourth guide pulley block, the second guide pulley block is arranged in parallel with the hanging beam, the fourth guide pulley block is arranged in perpendicular to the hanging beam, and the first guide pulley block, the third guide pulley block, the second guide pulley block and the fourth guide pulley block are fixedly connected with the frame of the crane trolley.

Furthermore, the first guide pulley block and the second guide pulley block are symmetrically arranged, and the third guide pulley block and the fourth guide pulley block are symmetrically arranged.

Further, the wire rope includes a first wire rope and a second wire rope.

A steel wire rope winding method based on a double hoisting device of a crane comprises the following steps:

step 1: winding a first steel wire rope on a first winding drum for fixing, winding one end of the first steel wire rope, which is far away from a second winding drum, around a movable pulley of a first movable pulley block, and connecting a fixed pulley of the first fixed pulley block, wherein the first steel wire rope is sequentially wound on the movable pulley of the first movable pulley block and the fixed pulley of the first fixed pulley block in a crossed manner;

step 2: winding an outgoing line of the last movable pulley of the first movable pulley block on a third guide pulley block, and then connecting a second guide pulley block to ensure that the first steel wire rope is fixedly connected with the second winding drum through the second guide pulley block, and the first steel wire rope forms a closed loop;

and step 3: winding a second steel wire rope on a second winding drum for fixing, winding one end of the second steel wire rope, which is far away from the first winding drum, around a movable pulley of a second movable pulley block, connecting a fixed pulley of a second fixed pulley block, and sequentially and crossly winding the second steel wire rope around the movable pulley of the second movable pulley block and the fixed pulley of the second fixed pulley block;

and 4, step 4: and winding the outgoing line of the last movable pulley of the second movable pulley block on the fourth guide pulley block, and then connecting the first guide pulley block to ensure that the second steel wire rope is fixedly connected with the first reel through the first guide pulley block and the second steel wire rope forms a closed loop.

Furthermore, the winding direction of the first steel wire rope is from the first winding drum side to the second winding drum side, and the winding direction of the second steel wire rope is from the second winding drum side to the first winding drum side.

The invention has the beneficial effects that:

1. the invention relates to a steel wire rope winding method based on a double-lifting device of a crane, which is provided with the double-lifting device, wherein the double-lifting device comprises a first guide mechanism and a second guide mechanism, the first guide mechanism and the second guide mechanism are used for ensuring the balance of the double-lifting structure, so that the double-lifting mechanism is uniformly stressed when stressed, the stress point deviation cannot occur, meanwhile, the first guide mechanism and the second guide mechanism can avoid the problem that a plurality of sections of steel wire ropes are wound and knotted during working, and the safety performance of the double-lifting mechanism is improved.

2. The double-lifting device is improved on the original crane, and the arranged first fixed pulley block, second fixed pulley block, first guide mechanism, second guide mechanism, first movable pulley block and second movable pulley block are all universal pulley instruments, so that the double-lifting device is easy to install, disassemble and convenient to replace and overhaul.

Drawings

Fig. 1 is a schematic structural diagram of a double lifting device of a crane.

Fig. 2 is a schematic diagram of the winding of a first steel wire rope of the double-hoisting device of the crane.

FIG. 3 is a schematic diagram of the winding of a second steel wire rope of the double-hoisting device of the crane

The reference numbers in the drawings are as follows: 101 is a first reel, 102 is a second reel, 2 is a hanging beam, 3 is a first fixed pulley block, 4 is a second fixed pulley block, 5 is a first guide pulley block, 6 is a third guide pulley block, 7 is a second guide pulley block, 8 is a fourth guide pulley block, 9 is a first movable pulley block, 10 is a second movable pulley block, 1101 is a first steel wire rope, and 1102 is a second steel wire rope.

Detailed Description

The invention is further described with reference to the following figures and detailed description:

as shown in fig. 1 ~ 3, a dual-lifting device of a crane comprises a reel set, a lifting beam 2 and a crane trolley, wherein the reel set comprises a first reel 101 and a second reel 102, the first reel 101 and the second reel 102 are correspondingly arranged at the upper end of the crane trolley, a first fixed pulley block 3 is arranged at the lower part of the first reel 101, a second fixed pulley block 4 is arranged at the lower part of the second reel 102, the first fixed pulley block 3 and the second fixed pulley block 4 are symmetrically arranged about a neutral line of the crane trolley, a first guide mechanism is arranged between the first reel 101 and the crane trolley, a second guide mechanism is arranged between the second reel 102 and the crane trolley, the first guide mechanism and the second guide mechanism are used for keeping balance of the dual-lifting structure, a first movable pulley block 9 and a second movable pulley block 10 are correspondingly arranged on the lifting beam 2, the first movable pulley block 9 and the second movable pulley block 10 are fixedly connected with the lifting beam 2, and the first reel 101, the second reel 102, the first fixed pulley block 3, the second fixed pulley block 4, the first guide mechanism, the second movable pulley block 9 and the second movable pulley block 10 are connected with the lifting beam 2 through a steel wire.

In order to reduce the abrasion of the steel wire rope, reduce the operation resistance and avoid the knotting of the first steel wire rope 1101 and the second steel wire rope 1102, the first guide mechanism comprises a first guide pulley block 5 and a third guide pulley block 6, the first guide pulley block 5 is arranged in parallel with the hanging beam 2, the third guide pulley block 6 is arranged vertically to the hanging beam 2, the second guide mechanism comprises a second guide pulley block 7 and a fourth guide pulley block 8, the second guide pulley block 7 is arranged in parallel with the hanging beam 2, the fourth guide pulley block 8 is arranged vertically to the hanging beam 2, and the first guide pulley block 5, the third guide pulley block 6, the second guide pulley block 7 and the fourth guide pulley block 8 are fixedly connected with the frame of the crane trolley.

In order to enable the crane trolley and the hanging beam 2 to be stressed uniformly, the first guide pulley block 5 and the second guide pulley block 7 are symmetrically arranged, and the third guide pulley block 6 and the fourth guide pulley block 8 are symmetrically arranged.

A steel wire rope 11 winding method based on a double-hoisting device of a crane comprises the following steps:

step 1: winding a first steel wire rope 1101 on the first winding drum 101 to be fixed, then winding one end, far away from the second winding drum 102, of the first steel wire rope 1101 around one movable pulley of the first movable pulley block 9 to be connected with one fixed pulley of the first fixed pulley block 3, and sequentially and crosswise winding the first steel wire rope 1101 on the movable pulley of the first movable pulley block 9 and the fixed pulley of the first fixed pulley block 3;

step 2: winding an outgoing line of the last movable pulley of the first movable pulley block 9 on the third guide pulley block 6, and then connecting the second guide pulley block 7, so that the first steel wire rope 1101 is fixedly connected with the second winding drum 102 through the second guide pulley block 7, and the first steel wire rope 1101 forms a closed loop;

and step 3: winding a second steel wire rope 1102 on a second winding drum 102 for fixing, then winding one end, far away from the first winding drum 101, of the second steel wire rope 1102 around a movable pulley of a second movable pulley block 10 to be connected with a fixed pulley of a second fixed pulley block 4, and sequentially and crosswise winding the second steel wire rope 1102 on the movable pulley of the second movable pulley block 10 and the fixed pulley of the second fixed pulley block 4;

and 4, step 4: and winding the outgoing line of the last movable pulley of the second movable pulley block 10 on the fourth guide pulley block 8, and then connecting the first guide pulley block 5, so that the second steel wire rope 1102 is fixedly connected with the first reel 101 through the first guide pulley block 5, and the second steel wire rope 1102 forms a closed loop.

In order to avoid a wrong winding direction of the wire rope, the first wire rope 1101 is wound from the first reel 101 side to the second reel 102 side, and the second wire rope 1102 is wound from the second reel 102 side to the first reel 101 side.

The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles of the invention described in the claims should be included in the claims.