CN116177431A

CN116177431A - Hoisting system of large heavy-duty lifting appliance

Info

Publication number: CN116177431A
Application number: CN202211551717.6A
Authority: CN
Inventors: 任芙余; 周昆凤; 杨继彪
Original assignee: Csic Chongqing Hydraulic Mechanical Electronical Co ltd
Current assignee: Csic Chongqing Hydraulic Mechanical Electronical Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-30

Abstract

The invention relates to a hoisting system of a large heavy-duty lifting appliance, which comprises a lifting assembly, wherein the lifting assembly is connected with the lifting appliance, the lifting assembly comprises a first hoisting assembly, a second hoisting assembly and ropes, the first hoisting assembly comprises a first winding drum, a first fixed pulley and a first follower, the second hoisting assembly comprises a second winding drum, a second fixed pulley and a second follower, the first fixed pulley and the second fixed pulley are fixedly arranged, the first follower and the second follower are arranged on the lifting appliance, and the ropes are sequentially wound on the first winding drum, the first fixed pulley, the first follower, the second fixed pulley and the second winding drum. The hoisting system of the large heavy-duty hoisting tool improves the mechanical synchronization performance of the hoisting system, reduces the difference of the expansion and contraction amount among the groups of steel wire ropes, reduces the synchronous control precision requirement of the hoisting motor end, and ensures that the hoisting tool can be lifted more reliably and stably.

Description

Hoisting system of large heavy-duty lifting appliance

Technical Field

The invention relates to the technical field of conveying devices, in particular to a hoisting system of a large heavy-duty lifting appliance.

Background

Along with the economic development of China, various transportation devices are continuously emerging, and the transportation devices can effectively improve the loading and moving efficiency of various cargoes and reduce the transportation cost. The large heavy-duty sling is a device for lifting heavy objects, and the hoisting system is a device for completing traction work by driving a winding drum and winding ropes by manpower or mechanical power. In the prior art, a hoisting system drives a lifting appliance, so that objects on the lifting appliance can be lifted, the existing hoisting system generally adopts a fixed pulley, a steel wire rope is driven by a winding drum, and the fixed pulley is utilized to drive the lifting appliance. However, when the lifting appliance lifts, the difference of the expansion and contraction amount is easy to generate among a plurality of steel wire ropes, so that the synchronization is caused, the load is unbalanced, and the system can stably and reliably operate a hoisting system according to the characteristics of large bearing area, large bearing unbalanced load, long transportation distance and high stability requirement of a large-scale heavy-load lifting appliance.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a hoisting system for enabling a large heavy-duty hoisting tool to have a self-balancing steel wire rope tension, so that when the hoisting tool operates with unbalanced load, the system can eliminate the elongation difference between steel wire ropes through the balance of the steel wire rope tension, the working speeds of all hoisting machines in the hoisting system are basically synchronous and the load is balanced, the synchronous difficulty of the hoisting system is reduced, and the operation efficiency of the hoisting tool is improved.

The specific technical scheme is as follows: the utility model provides a hoist system of large-scale heavy load hoist, includes lifting unit, and lifting unit is connected with the hoist, and lifting unit includes first lifting unit, second lifting unit and rope, and first lifting unit includes first reel, first fixed pulley and first follower, second lifting unit includes the second reel, second fixed pulley and second follower, and first fixed pulley and second fixed pulley are fixed to be set up, and first follower and second follower setting are on the hoist, and the rope twines in proper order on first reel, first fixed pulley, first follower, second fixed pulley, second reel.

As the preferred scheme, hoist one side is equipped with two at least groups of first hoist subassembly, second hoist subassembly and rope, and the first follower wheel of two groups of first hoist subassemblies sets up in the top and the below of hoist respectively, and the second follower wheel of two groups of second hoist subassemblies sets up in the top and the below of hoist respectively.

Preferably, the first winding assembly and the second winding assembly are symmetrically arranged.

As a preferable scheme, the two first winding drums are rigidly connected, the first winding drums synchronously rotate, the two second winding drums are rigidly connected, and the second winding drums synchronously rotate.

As an optimal scheme, the lifting assemblies are symmetrically distributed on two sides of the lifting appliance.

As an optimal scheme, the lifting appliance is arranged in the lifting tunnel, and the first fixed pulley and the second fixed pulley are fixed on the lifting tunnel.

Preferably, the first fixed pulley and the second fixed pulley are the same fixed pulley, and the first follower wheel and the second follower wheel are the same follower wheel.

As the preferable scheme, the fixed pulley comprises a first pulley, a first pulley shaft and a fixed pulley seat, wherein the first pulley is arranged on the fixed pulley seat through the first pulley shaft.

The following pulley comprises a second pulley, a second pulley shaft and a following pulley seat, wherein the second pulley is arranged on the following pulley seat through the second pulley shaft.

Preferably, the rope is a steel wire rope.

The invention has the technical effects that: the hoisting system of the large heavy-duty hoisting tool improves the mechanical synchronization performance of the hoisting system, reduces the difference of the expansion and contraction amount among the groups of steel wire ropes, reduces the synchronous control precision requirement of the hoisting motor end, and ensures that the hoisting tool can be lifted more reliably and stably.

Drawings

Fig. 1 is a schematic view of a hoisting system of a large heavy-duty spreader according to an embodiment of the invention.

Fig. 2 is a side view of a hoisting system of a large heavy-duty spreader according to an embodiment of the invention.

Fig. 3 is an isometric view of a hoisting system for a large heavy-duty spreader in accordance with an embodiment of the invention.

Fig. 4 is a schematic diagram of a first reel tandem of an embodiment of the present invention.

Fig. 5 is a schematic view of a fixed sheave of an embodiment of the present invention.

Fig. 6 is a schematic diagram of a follower pulley of an embodiment of the invention.

Detailed Description

The essential features and advantages of the invention will be further elucidated with reference to the examples, without however being limited to the embodiments listed.

As shown in fig. 1 to 6, a hoisting system of a large heavy-duty hoist according to this embodiment includes a lifting assembly 10, wherein the lifting assembly 10 is connected to a hoist 20, and the hoist 20 is driven to move up and down by the lifting assembly 10. The lifting assembly 10 comprises a first hoisting assembly 1, a second hoisting assembly 2 and a rope 3, the first hoisting assembly 1 comprises a first winding drum 11, a first fixed pulley 12 and a first follower wheel 13, the second hoisting assembly 2 comprises a second winding drum 21, a second fixed pulley 22 and a second follower wheel 23, the first fixed pulley 12 and the second fixed pulley 22 are fixedly arranged, the first follower wheel 13 and the second follower wheel 23 are arranged on a lifting appliance 20, and the rope 3 is sequentially wound on the first winding drum 11, the first fixed pulley 12, the first follower wheel 13, the second follower wheel 23, the second fixed pulley 22 and the second winding drum 21. In the above technical solution, the single rope 3 is connected in series with the first reel 11, the first fixed pulley 12, the first follower wheel 13, the second follower wheel 23, the second fixed pulley 22 and the second reel 21, and the reels rotate to reel and reel the rope; the displacement difference generated in the winding and unwinding process of the first winding drum 11 and the second winding drum 21 and the expansion difference of different parts of the rope 3 are balanced through the transmission of the first follow-up pulley and the second follow-up pulley. The winding drums are connected in series, the fixed pulley winding is changed into the movable pulley winding, and symmetrical ropes are combined into one rope, so that the self-adjustment and self-balancing of the expansion and contraction amount can be realized through the follow-up pulleys, and the expansion and contraction amount difference between the two original steel wire ropes is eliminated. The rope of this embodiment is a wire rope, and the drum is driven by a motor and a decelerator.

In this embodiment, one side of the lifting appliance 20 is provided with at least two groups of first winch assemblies 1, second winch assemblies 2 and ropes 3, the first follower wheels 13 of the two groups of first winch assemblies 1 are respectively arranged above and below the lifting appliance 20, and the second follower wheels 23 of the two groups of second winch assemblies 2 are respectively arranged above and below the lifting appliance, so that the lifting appliance 20 can move more stably, and two steel wire ropes are arranged on the same side of the lifting appliance 20. The first hoisting assembly 1 and the second hoisting assembly 2 are symmetrically arranged. The two first reels 11 are rigidly connected, the first reels rotate synchronously, the two second reels 21 are rigidly connected, and the second reels rotate synchronously. The two first reels 11 are arranged on the same reel seat and are rigidly connected through the reel shaft 4, so that the synchronous capacity of the reels is ensured, and the synchronous winding and unwinding of two steel wire ropes on the same side is ensured. The lifting assemblies 10 are symmetrically distributed on two sides of the lifting appliance 20, so that the lifting appliance can stably lift.

In this embodiment, the lifting appliance 20 is disposed in the lifting tunnel 5, and the first fixed pulley 12 and the second fixed pulley 22 are fixed on the lifting tunnel 5, so that the lifting appliance 20 can lift in the lifting tunnel 5. The first fixed pulley 12 and the second fixed pulley 22 are the same fixed pulley, and the first follower wheel 13 and the second follower wheel 23 are the same follower wheel. The fixed pulley comprises a first pulley 31, a first pulley shaft 32 and a fixed pulley seat 33, wherein the first pulley 31 is arranged on the fixed pulley seat 33 through the first pulley shaft 32. The follower pulley includes a second pulley 41, a second pulley shaft 42, and a follower pulley seat 43, the second pulley 41 being disposed on the follower pulley seat 43 through the second pulley shaft 42. Through the technical scheme, the first pulley and the second pulley can smoothly roll.

Compared with a conventional lifting appliance lifting system, the lifting system of the large heavy-duty lifting appliance has better load balancing capability and synchronization performance, reduces the synchronous control precision requirement of a lifting motor end through structural optimization and innovative steel wire rope arrangement, and ensures that lifting of the lifting appliance is more reliable and stable.

It should be noted that the foregoing description of the preferred embodiments is merely illustrative of the technical concept and features of the present invention, and is not intended to limit the scope of the invention, as long as the scope of the invention is defined by the claims and their equivalents. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a hoist system of large-scale heavy load hoist, its characterized in that, including lifting unit, lifting unit is connected with the hoist, and lifting unit includes first hoist subassembly, second hoist subassembly and rope, and first hoist subassembly includes first reel, first fixed pulley and first follower, second hoist subassembly includes the second reel, second fixed pulley and second follower, and first fixed pulley and second fixed pulley are fixed to be set up, and first follower and second follower set up on the hoist, and the rope twines in proper order on first reel, first fixed pulley, first follower, second fixed pulley, second reel.

2. The hoisting system of the large heavy-duty hoisting tool according to claim 1, wherein at least two groups of first hoisting assemblies, second hoisting assemblies and ropes are arranged on one side of the hoisting tool, first follower wheels of the two groups of first hoisting assemblies are respectively arranged above and below the hoisting tool, and second moment wheels of the two groups of second hoisting assemblies are respectively arranged above and below the hoisting tool.

3. The hoist system of claim 2, characterized in that the first and second hoist assemblies are symmetrically arranged.

4. A hoisting system for a large heavy-duty spreader according to claim 3, characterized in that the first reels are rigidly connected to each other, the first reels are rotated synchronously, the second reels are rigidly connected to each other, and the second reels are rotated synchronously.

5. The hoisting system of a large heavy-duty spreader of claim 4, wherein the lifting assemblies are symmetrically distributed on both sides of the spreader.

6. The hoisting system of a large heavy-duty hoist of claim 5, characterized in that the hoist is disposed in a lifting tunnel, and the first fixed sheave and the second fixed sheave are fixed to the lifting tunnel.

7. The hoisting system of a large heavy-duty hoist of claim 6, characterized in that the first and second fixed pulleys are the same fixed pulley and the first and second follower wheels are the same follower wheel.

8. The hoisting system of a large heavy-duty hoist according to claim 7, characterized in that the fixed sheave comprises a first sheave, a first sheave shaft and a fixed sheave seat, the first sheave being arranged on the fixed sheave seat by the first sheave shaft.

9. The hoisting system of a large heavy-duty hoist according to claim 8, characterized in that the follow-up pulley comprises a second pulley, a second pulley shaft and a follow-up pulley seat, the second pulley being arranged on the follow-up pulley seat by the second pulley shaft.

10. The hoisting system of a large heavy-duty hoist of claim 9, characterized in that the ropes are wire ropes.