CN217676330U

CN217676330U - Single-rope and single-row parallel rope winding system of crane

Info

Publication number: CN217676330U
Application number: CN202221934391.0U
Authority: CN
Inventors: 邵秋波; 李鹏举; 洪郴; 于印稳; 范开英
Original assignee: Shandong Fenghui Equipment Technology Co Ltd
Current assignee: Shandong Fenghui Equipment Technology Co Ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-10-28
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a single-rope single-row parallel rope winding system of a crane, which comprises a movable pulley block, a fixed pulley block, a balance pulley block and a steel wire rope, wherein the steel wire rope winds in from a pulley at one end of the fixed pulley block, when winding in the fixed pulley block and the movable pulley block, one pulley is skipped in sequence each time, the balance pulley block at the other end turns back and winds in the pulleys reserved in the fixed pulley block and the movable pulley block in a staggered way, and finally, the steel wire rope winds out from a pulley II at the rope inlet end of the fixed pulley block; the steel wire ropes turned back by the balance pulley block are sequentially staggered and wound on the movable pulley block and the fixed pulley block in parallel without mutual interference; the rope inlet and outlet of the steel wire rope are arranged on the same side of the same end of the pulley block. The utility model has simple structure and arrangement and higher safety; the utility model discloses two sets of series connection combination use and two sets of parallelly connected alternately use, can realize the tonnage and highly multiply, optimize the complete machine performance.

Description

Single-rope and single-row parallel rope winding system of crane

Technical Field

The utility model relates to a parallel wiring system of single rope single row of hoist belongs to hoisting machinery, engineering machine tool technical field.

Background

The rated load-lifting capacity of large-tonnage crane can reach hundreds of tons or thousands of tons, and in the lifting pulley block and its rope-winding system and the amplitude-variable pulley block and its rope-winding system, the number of pulleys can be up to dozens or hundreds. The traditional rope winding mode is that the steel rope wound out of a winding drum is sequentially wound between a movable pulley and a fixed pulley in the forward direction. One is shown in figure 1: a rope winding mode of winding the rope from one end of the pulley block to the other end in sequence and fixing. Due to the efficiency loss of the pulley, when the rope is retracted, the tension of the rope inlet end of the pulley block is large, and the tension of the fixed end is small; when the rope is released, the tension of the rope entering end of the pulley block is small, the tension of the fixed end is large, and finally the movable pulley block on the hook group is subjected to unbalance loading and inclination. And along with the action of rope winding and rope releasing, the two ends of the movable pulley block are suddenly raised and suddenly lowered, so that the accuracy and the safety of field hoisting operation are influenced. Another is shown in fig. 2: the rope is fed from two ends of the pulley block, and the rope winding mode of sequential winding can only be applied to duplex winding without an independent balancing pulley block.

Chinese patent publication No. CN104176668A discloses a "duplex double-drum rope winding system". This patent is based on the crisscross wiring system of mixing of two reels of pair, has guaranteed the security of mechanism, and its synchronism is good, arranges the form simply. However, the rope winding mode is only suitable for a mechanism with four ropes going out from double-linkage double drums, four steel wire ropes going out from the drums can only wind in from two sides of two ends of the pulley block, and the rope winding mode can only be applied to cranes such as a bridge crane and the like, and the requirements of unbalance loading and small inclination of the movable pulley block during single-drum single-linkage rope winding design cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problem that, to the defect that prior art exists, provide a parallel wiring system of hoist single rope single bank, when solving single reel list and allies oneself with the wiring design, the problem of running block incline and unbalance loading atress improves the stability and the security of hoist carry.

The technical scheme of the utility model as follows:

the utility model provides a single-rope single-row parallel rope winding system of a crane, which comprises a movable pulley block, a fixed pulley block, a balance pulley block and a steel wire rope, wherein the steel wire rope winds in from the pulley one end of the fixed pulley block, when the steel wire rope winds into the fixed pulley block and the movable pulley block, one pulley is skipped in sequence each time, the steel wire rope turns back to the balance pulley block at the other end, the steel wire rope winds back into the pulleys reserved by the fixed pulley block and the movable pulley block in a staggered manner, and finally winds out from the pulley two at the rope inlet end of the fixed pulley block; the steel wire ropes turned back by the balance pulley block are sequentially staggered and wound on the movable pulley block and the fixed pulley block in parallel without mutual interference; the steel wire rope inlet rope and the steel wire rope outlet rope are arranged on the same side of the same end of the pulley block.

And the pulleys of the movable pulley block and the fixed pulley block are in a single-row arrangement form.

Two groups of single-rope single-row parallel winding systems are connected in series and used in a combined mode, the double-rope single-row parallel winding mode is achieved, and the balance pulley blocks of the two groups of single-rope single-row parallel winding systems are connected together through the balance support.

Two groups of the single-rope single-row parallel winding system are connected in parallel and used in a crossed mode, so that a double-rope single-row parallel winding mode is realized; two steel wire ropes are wound in from the same side of the two ends of the fixed pulley block 3 respectively, skip one pulley in sequence and are wound out from the same side of the other end.

The fixed points of the two steel wire ropes wound out of the pulley block are arranged on the drums, and four rope heads of the two steel wire ropes are fixed on the two drums, so that a one-side double-drum double-connection four-rope-outlet form of the pulley block is realized.

Has the advantages that:

the steel wire rope in the rope winding system of the utility model is a single steel wire rope which is turned back and wound out through the balance pulley after being wound into the pulley block, and the wound-in and wound-out steel wire ropes are sequentially staggered on the movable pulley block and the fixed pulley block to be wound in parallel without mutual interference; the structure is arranged simply, and the security is higher.

The utility model discloses single wire rope's income rope point and play rope point are at the same end of assembly pulley in the wiring system, effectively solve because each wire rope atress that reasons such as the efficiency loss of pulley lead to is uneven to arouse the incline and the unbalance loading atress problem of lifting hook group, improve the stability and the security of hoist lifting load.

The utility model discloses single wire rope's income rope point and play rope point in the same one side of assembly pulley among the wiring system can realize single reel simply connected wiring design, specially adapted large-tonnage and the hoisting mechanism and the luffing mechanism of big hoisting height.

The utility model discloses two sets of series connection of wiring system are made up and are used and two sets of parallelly connected scheme of alternately using in parallel, can regard as the series connection and the parallelly connected form of single rope single-row parallel wiring system, both can be applied to single reel pair design and also can be applied to double reel pair design. The two groups of rope winding systems can work together, realize tonnage and height multiplication, optimize the performance of the whole machine, and also can work independently to realize redundant design.

The single-side double-winding-drum duplex four-rope-outlet form has the advantages of two groups of serial combined use and two groups of parallel cross use schemes, and the rope capacity of the whole machine is increased by multiple times on the basis, so that the lifting height is increased; the diameter of the winding drum is effectively reduced, and the cost of the whole machine is reduced; the lifting speed is improved, and the technical parameters of the whole machine are optimized.

Drawings

FIG. 1 is a schematic view of a conventional roping system A;

FIG. 2 is a schematic view of a conventional roping system B;

FIG. 3 is a schematic view of a single-rope single-row parallel rope winding system A of the present invention;

FIG. 4 is a schematic view of a single-rope single-row parallel winding system B of the present invention;

FIG. 5 is a schematic structural view of a single-rope single-row parallel winding system according to the present invention;

FIG. 6 is a schematic view of two series-connected combinations of the present invention;

FIG. 7 is a schematic diagram of two sets of parallel cross-use schemes of the present invention;

fig. 8 is a schematic view of a double-drum four-rope parallel rope winding system a of the present invention;

fig. 9 is a schematic view of a double-drum four-rope parallel rope winding system B of the present invention.

In the figure: 1. a movable pulley block; 2. a balancing pulley block; 3. a fixed pulley block; 4. a second pulley; 5. a first pulley; 6. a wire rope; 7. a reel; 8. and (4) balancing the bracket.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 3-5, the utility model provides a parallel wiring system of single rope single file of hoist, the parallel wiring system of single rope single file includes movable pulley block 1, standing block 3, balanced assembly pulley 2 and wire rope 6. The steel wire rope 6 is wound in from the pulley I5 at one end of the fixed pulley block 3, when the steel wire rope is wound in the fixed pulley block 3 and the movable pulley block 1, one pulley is skipped in sequence each time, the steel wire rope turns back to the balance pulley block 2 at the other end (the direction of winding the steel wire rope in the balance pulley is different in figures 3 and 4) to be alternately wound in the pulley reserved in the fixed pulley block 3 and the pulley reserved in the movable pulley block 1, finally the steel wire rope 6 is wound out from the pulley II 4 at the rope inlet end of the fixed pulley block 3, and the steel wire rope 6 which is turned back through the balance pulley block 2 is sequentially staggered on the movable pulley block 1 and the fixed pulley block 3 to be wound in parallel without mutual interference. The rope inlet and the rope outlet of the steel wire rope 6 are arranged on the same side of the same end of the pulley block, so that the problems of deflection and unbalance loading stress of the movable pulley block 1 caused by uneven stress of the steel wire ropes when a single-reel single-linkage rope winding design is effectively solved, and the steel wire rope winding mechanism is particularly suitable for a hoisting mechanism and an amplitude-changing mechanism with large tonnage and large hoisting height. The pulleys of the movable pulley block 1 and the fixed pulley block 3 in the rope winding system are in a single-row arrangement form, the structure is simple, and the stress condition is good.

As shown in fig. 6, the single-rope single-row parallel winding system can be combined by two groups of ropes connected in series to realize a double-rope single-row parallel winding mode, which is realized by connecting the balance pulley blocks 2 of the two groups of single-rope single-row parallel winding systems together by using the balance bracket 8.

As shown in fig. 7, the single-rope single-row parallel winding system can also be used in two groups in parallel and in a crossed manner to realize another double-rope single-row parallel winding mode, wherein two steel wire ropes of the system are wound in from the same side of two ends of the fixed pulley block respectively, skip one pulley in sequence and wind out from the same side of the other end.

As shown in fig. 6 and 7, in the scheme of using two groups of parallel winding systems in series or two groups of parallel winding systems in parallel and crossed manner, two steel wire ropes coming out of a winding drum are wound into a pulley from the same side of a pulley block, so that the two schemes can be applied to a single-winding-drum duplex design or a double-winding-drum simplex design. And the balance pulley block 2 of the two schemes is combined by the balance bracket 8, and the error generated by the two sets of rope winding systems in asynchronization can be adjusted by utilizing the lever principle of the balance bracket, so that the two sets of systems are stressed simultaneously. In addition, the structural form of the balance support is changed, one set of rope winding system can be stressed, the other set of rope winding system is not stressed, and a redundant design is achieved (one set of rope winding system is used as a power rope winding system and the other set of rope winding system is used as a safety rope winding system during normal work, and when the power rope winding system fails, the safety rope winding system can still keep heavy objects from falling).

As shown in fig. 8 and 9, on the basis of the two series combination or two parallel cross use schemes, the fixed point of two steel wire ropes wound out of the pulley block is arranged on the winding drum, so that the form of double connection and four rope outlet of the double winding drums on one side of the pulley block is realized. The form has the advantages of two series combination use schemes and two parallel cross use schemes, and the rope capacity of the whole machine is increased by multiple times on the basis, so that the lifting height is increased; the diameter of the winding drum is effectively reduced, and the cost of the whole machine is reduced; the lifting speed is improved, and the technical parameters of the whole machine are optimized.

The single-rope single-row parallel rope winding system and several combination forms thereof are mainly applied to large tower cranes and large-tonnage mast cranes, and can also be applied to large-tonnage bridge cranes, gantry cranes, floating cranes and other hoisting equipment.

The utility model discloses can be different according to the tonnage, the quantity of adjustment pulley realizes the expansion of different multiplying powers and load lifting capacity.

The above embodiments of the present invention are only examples, not only, but also all changes within the scope of the present invention or the same are encompassed by the present invention.

Claims

1. The utility model provides a hoist single rope single-row parallel wiring system which characterized in that: the steel wire rope is wound in from a pulley I (5) at one end of the fixed pulley block (3), when the steel wire rope is wound in the fixed pulley block (3) and the movable pulley block (1) each time, one pulley is skipped in sequence, the balance pulley block (2) at the other end is turned back and is wound in the fixed pulley block (3) and a pulley reserved in the movable pulley block (1) in a staggered manner, and finally the steel wire rope is wound out from a pulley II (4) at the rope inlet end of the fixed pulley block (3); the steel wire ropes (6) turned back by the balance pulley block (2) are sequentially staggered on the movable pulley block (1) and the fixed pulley block (3) to be wound in parallel without mutual interference; the rope inlet and the rope outlet of the steel wire rope (6) are arranged on the same side of the same end of the pulley block.

2. The crane single-rope single-row parallel roping system according to claim 1, characterized in that: and the pulleys of the movable pulley block (1) and the fixed pulley block (3) are arranged in a single row.

3. The crane single rope single row parallel roping system of claim 1, characterized in that: two groups of single-rope single-row parallel winding systems are connected in series and used in a combined mode, the double-rope single-row parallel winding mode is achieved, and the balance pulley blocks (2) of the two groups of single-rope single-row parallel winding systems are connected together through the balance support (8).

4. The crane single rope single row parallel roping system of claim 1, characterized in that: two groups of the single-rope single-row parallel winding system are connected in parallel and used in a crossed mode, so that a double-rope single-row parallel winding mode is realized; two steel wire ropes (6) are wound in from the same side of the two ends of the fixed pulley block (3) respectively, skip one pulley in sequence and are wound out from the same side of the other end.

5. The crane single rope single row parallel roping system of claim 3 or 4, wherein: the fixed points of the two steel wire ropes (6) wound out of the pulley block are arranged on the winding drums (7), and four rope heads of the two steel wire ropes (6) are fixed on the two winding drums (7), so that the form of one-side double-winding-drum double four-rope outlet of the pulley block is realized.