CN115215195A - Single-rope and single-row parallel rope winding system of crane - Google Patents

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

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Publication number
CN115215195A
CN115215195A CN202210879611.2A CN202210879611A CN115215195A CN 115215195 A CN115215195 A CN 115215195A CN 202210879611 A CN202210879611 A CN 202210879611A CN 115215195 A CN115215195 A CN 115215195A
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CN
China
Prior art keywords
rope
pulley block
steel wire
wound
winding
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210879611.2A
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Chinese (zh)
Inventor
邵秋波
李鹏举
洪郴
于印稳
范开英
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Shandong Fenghui Equipment Technology Co Ltd
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Shandong Fenghui Equipment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Fenghui Equipment Technology Co Ltd filed Critical Shandong Fenghui Equipment Technology Co Ltd
Priority to CN202210879611.2A priority Critical patent/CN115215195A/en
Publication of CN115215195A publication Critical patent/CN115215195A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/14—Slings with hooks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/54—Safety gear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The invention 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 is wound in from a pulley I at one end of the fixed pulley block, one pulley is sequentially skipped when the steel wire rope is wound in the fixed pulley block and the movable pulley block each time, the balance pulley block at the other end is turned back and is wound in the fixed pulley block and a pulley reserved in the movable pulley block in a staggered manner, and finally, the steel wire rope is wound 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 invention has simple structure and arrangement and higher safety; the invention can realize the multiplication of tonnage and height and optimize the performance of the whole machine by using two groups of serial combination and two groups of parallel cross.

Description

Single-rope single-row parallel rope winding system of crane
Technical Field
The invention relates to a single-rope single-row parallel rope winding system of a crane, belonging to the technical field of hoisting machinery and engineering machinery.
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 amplitude-variable pulley block and its rope-winding system, the number of pulleys can be up to tens or hundreds. The traditional steel wire rope winding mode is that the steel wire 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: and a rope winding mode that a rope is fed from one end of the pulley block, sequentially wound to the other end and fixed is adopted. 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 actions of rope winding and rope releasing, the two ends of the movable pulley block are suddenly raised and 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 be only applied to duplex winding and has no independent balance 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 invention aims to solve the technical problem that a single-rope single-row parallel rope winding system of a crane is provided aiming at the defects in the prior art, so that the problems of deflection and unbalance loading stress of a movable pulley block during single-drum single-linkage rope winding design are solved, and the stability and the safety of crane hoisting are improved.
The technical scheme of the invention is as follows:
the invention 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 a pulley I at one end of the fixed pulley block, one pulley is sequentially skipped when winding in the fixed pulley block and the movable pulley block each time, the balance pulley block at the other end turns back to stagger and wind in the pulleys reserved in the fixed pulley block and the movable pulley block, 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 on the movable pulley block and the fixed pulley block and wound 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.
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 winding drums, and four rope heads of the two steel wire ropes are fixed on the two winding drums, so that a one-side double-winding-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 is a single steel wire rope, the steel wire rope is wound into the pulley block and then is turned back and wound out through the balance pulley, and the wound-in and wound-out steel wire ropes are sequentially staggered on the movable pulley block and the fixed pulley block and are wound in parallel without mutual interference; the structure is arranged simply, and the security is higher.
The rope inlet point and the rope outlet point of a single steel wire rope in the rope winding system are arranged at the same end of the pulley block, so that the problems of deflection and unbalance loading stress of the hook group caused by uneven stress of the steel wire ropes due to the efficiency loss of the pulley and the like are effectively solved, and the stability and the safety of crane hoisting are improved.
The rope inlet point and the rope outlet point of a single steel wire rope in the rope winding system are positioned on the same side of the pulley block, so that the single-reel single-linkage rope winding design can be realized, and the rope winding system is particularly suitable for hoisting mechanisms and luffing mechanisms with large tonnage and large hoisting height.
The scheme of two groups of serial combined use and two groups of parallel cross use of the rope winding system can be regarded as the serial and parallel form of a single-rope single-row parallel rope winding system, and can be applied to single-drum duplex design and double-drum simplex 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 series-connection combined use schemes and two parallel-connection 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 roping system A of the present invention;
FIG. 4 is a schematic view of a single rope single row parallel roping system B according to the invention;
FIG. 5 is a schematic view of a single rope single row parallel roping system according to the invention;
FIG. 6 is a schematic diagram of two series combinations of the present invention;
FIG. 7 is a schematic diagram of two sets of parallel interleaving arrangements of the present invention;
FIG. 8 is a schematic view of a dual reel four rope parallel roping system A of the present invention;
fig. 9 is a schematic view of a double-drum four-rope parallel roping 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 invention provides a single-rope single-row parallel winding system of a crane, which comprises a movable pulley block 1, a fixed pulley block 3, a balance pulley block 2 and a steel 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 crossed manner to realize another double-rope single-row parallel winding mode, and 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 asynchronization of the two sets of rope winding systems 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 style 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 the redundant design is realized (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 a plurality of 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 invention can adjust the number of the pulleys according to different tonnage, and realize the expansion of different multiplying powers and lifting capacity.
The above-described embodiments of the invention are intended to be illustrative only and are not intended to be limiting, and all changes that come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims (5)

1. The utility model provides a parallel wiring system of single rope single file of hoist 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 and wound on the movable pulley block (1) and the fixed pulley block (3) in parallel without mutual interference; the rope inlet and 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 according to 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 balance supports (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. A crane single-rope single-row parallel roping system according to claim 3 or 4, characterized in that: 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.
CN202210879611.2A 2022-07-25 2022-07-25 Single-rope and single-row parallel rope winding system of crane Pending CN115215195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210879611.2A CN115215195A (en) 2022-07-25 2022-07-25 Single-rope and single-row parallel rope winding system of crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210879611.2A CN115215195A (en) 2022-07-25 2022-07-25 Single-rope and single-row parallel rope winding system of crane

Publications (1)

Publication Number Publication Date
CN115215195A true CN115215195A (en) 2022-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210879611.2A Pending CN115215195A (en) 2022-07-25 2022-07-25 Single-rope and single-row parallel rope winding system of crane

Country Status (1)

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CN (1) CN115215195A (en)

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