CN215974578U - Lifting system - Google Patents

Abstract

The utility model discloses a lifting system which comprises a support, a lifting mechanism, a lifting appliance cross beam, a load-bearing steel wire rope and a load lifting appliance, wherein the upper end of the lifting mechanism is connected to a fixed pivot on the support in a hinged mode, the lower end of the lifting mechanism is provided with a lifting hook, the lifting hook is connected to the central position of the lifting appliance cross beam through a hinged shaft, the lifting appliance cross beam is connected to the load lifting appliance through the load-bearing steel wire rope, the lifting appliance cross beam is provided with four steel wire rope fixed points, four lifting points are arranged on the load lifting appliance, and the four load-bearing steel wire ropes are respectively connected between the steel wire rope fixed points and the lifting points. The lifting system is of an upper and lower two-section structure, one lifting point is changed into four lifting points, the cross beam of the lifting appliance is ensured to be always kept horizontal, the load can be kept balanced in the upper and lower lifting, the four-rope lifting of the load is safe and reliable, the structure of the existing lifting system is simplified, the overall dimension of the whole lifting system is obviously reduced, and the working range of the lifting appliance and the operation limit dimension of the whole lifting equipment are enlarged.

Description

Lifting system

Technical Field

The utility model belongs to the technical field of hoisting and transporting equipment, and particularly relates to a hoisting system.

Background

As shown in fig. 1 and 2, a four-rope hoisting system in the prior art is generally designed to include two sets of hoisting mechanisms, each set of hoisting mechanism includes a wire rope reel 1, a pulley 2 and a duplex reel 3, wherein the two sets of hoisting mechanisms share the same duplex reel 3, therefore, each set of hoisting mechanism hangs down two wire ropes 4 through the pulley 2 and the duplex reel 3 respectively, and the two sets of hoisting mechanisms hang down four wire ropes 4 together to form four hoisting points, which are connected to a load hoist 5, so that the four wire ropes 4 are driven to hoist the load hoist 5 through rotation of the wire rope reel 1, thereby achieving the purpose of hoisting the load.

The prior art four-rope hoist systems suffer from disadvantages including: the lifting mechanism is complex, the overall dimension is large, the problem of high equipment cost is caused, the operation limit size of the lifting equipment is restricted, and the working range of the lifting appliance is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve some or all technical problems in the prior art, the utility model provides a novel lifting system, which comprises a support, a lifting mechanism, a lifting appliance beam, a load-bearing steel wire rope and a load lifting appliance, wherein the upper end of the lifting mechanism is connected to a fixed pivot on the support in a hinged manner, the lower end of the lifting mechanism is provided with a lifting hook, the lifting hook is connected to the central position of the lifting appliance beam through a hinge shaft, the lifting appliance beam is connected to the load lifting appliance through the load-bearing steel wire rope, the lifting appliance beam is provided with four steel wire rope fixed points, the load lifting appliance is provided with four lifting points, and the four load-bearing steel wire ropes are respectively connected between the steel wire rope fixed points and the lifting points.

Further, in the hoisting system, the hoisting mechanism is a chain block, and a thrust slewing bearing is arranged between the lifting hook and the main body of the chain block.

Further, in the hoisting system, a locking mechanism is arranged on the thrust slewing bearing in a matching manner.

Further, in the hoisting system, the chain hoist is in a double-motor and double-brake mode and comprises two motors, two matched brakes, a chain wheel, a chain and the lifting hook.

Further, in the hoisting system, a guide ring for guiding the bearing steel wire rope to move up and down is installed on the support.

Further, in the hoisting system, the load spreader is a spreader with a disc shape, the four hoisting points are symmetrically arranged along the center of the upper surface of the load spreader, and four symmetrical grapples for suspending loads are arranged below the load spreader.

The hoisting system of the utility model separates the chain hoist and the load hoist by the added hoist beam to form an up-down two-section structure, thereby changing one hoisting point into four hoisting points, and simultaneously four load-bearing steel wire ropes between the hoist beam and the load hoist can rotate relative to the chain hoist along with the hoist beam, thereby ensuring that the hoist beam is always kept horizontal, the load can be kept balanced in up-down hoisting, the gravity center of the load has no deviation, and the four-rope hoisting of the load is safe and reliable; in addition, the up-down two-section type lifting system simplifies the structure of the existing lifting system, obviously reduces the overall dimension of the whole lifting system, increases the working range of a lifting appliance and obviously increases the operation limit dimension of the whole lifting equipment; moreover, the up-down two-section type lifting system abandons the mode of two sets of lifting mechanisms in the prior art, thereby fundamentally avoiding the operation impact on the load due to asynchronous lifting between the two sets of mechanisms and leading the load lifting to be more stable and safer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. In the drawings:

FIG. 1 is a schematic structural diagram of a prior art four-rope hoist system;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic structural view of a hoist system of the present invention;

fig. 4a and 4b are schematic structural views of spreader beams in a hoisting system of the utility model, showing the arrangement of four hoisting points;

fig. 5 is a schematic structural view of a chain block in the hoisting system of the present invention.

Description of reference numerals:

1-steel wire rope reel, 2-pulley, 3-duplex reel, 4-steel wire rope and 5-load hanger;

10-bracket, 11-endless chain hoist, 111-lifting hook, 112-motor, 113-brake, 114-chain wheel, 115-chain, 12-spreader beam, 121-steel wire rope fixing point, 13-bearing steel wire rope, 14-load spreader, 15-thrust slewing bearing, 16-locking mechanism and 17-guide ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 3, 4a and 4b, the hoisting system of the present invention includes a support 10, a chain block 11, a spreader beam 12, a load-carrying wire 13 and a load spreader 14, wherein the support 10 is a supporting structure of the entire hoisting system, the chain block 11 is used as a hoisting mechanism of the hoisting system, the upper end of the chain block is connected to an upper fixed pivot of the support 10 in a hinged manner, the lower end of the chain block is provided with a hook 111, the hook 111 is connected to a central position of the spreader beam 12 through a hinge shaft, the spreader beam 12 is connected to the load spreader 14 through the load-carrying wire 13, the spreader beam 12 is provided with four wire fixing points 121, the load spreader 14 is provided with four suspension points, and the four load-carrying wire 13 are respectively connected between the wire fixing points 121 of the spreader beam 12 and the suspension points of the load spreader 14.

The utility model does not limit the specific shape of the spreader beam 12, and may be, for example, an X-shaped structure shown in fig. 4a, a rectangular frame structure shown in fig. 4b, etc., as long as four suspension points can be provided on the spreader beam 12.

A thrust slewing bearing 15 is provided between the hook 111 and the main body of the endless chain block 11, thereby allowing the hook 111 to horizontally rotate 360 °. Meanwhile, since the hook 111 is connected to the spreader beam 12 by a hinge shaft, the spreader beam 12 can rotate relative to the chain block 11, thereby being capable of adapting to various lifting tasks. In addition, the thrust slewing bearing 15 is provided with a locking mechanism 16 in a matching manner, and after the angle of the lifting hook 111 and the direction of the lifting appliance beam 12 are adjusted according to a specific lifting task, the locking mechanism 16 locks the thrust slewing bearing 15, so that the load gravity center is ensured not to shift in the lifting load process.

Preferably, a guide ring 17 may be installed on the bracket 10 for guiding the up and down movement of the load carrying wire 13.

As a specific embodiment, as shown in fig. 5, the chain hoist 11 is in a dual-motor and dual-brake form, and mainly includes two motors 112, two associated brakes 113, a sprocket 114, a chain 115, and the above-mentioned hook 111. According to a specific hoisting task, single-motor operation or double-motor operation can be selected.

In one embodiment, the load spreader 14 is a circular disc shaped spreader, four suspension points are symmetrically arranged along the center of the upper surface of the load spreader 14, and four symmetrical grapples are arranged under the load spreader 14 for suspending a load.

In summary, compared with the prior art, the hoisting system provided by the utility model has the following advantages and beneficial effects:

the hoisting system of the utility model separates the chain hoist 11 and the load hoist 14 by the additionally arranged hoist beam 12 to form an up-down two-section structure, thereby changing one hoisting point into four hoisting points, and simultaneously four bearing steel wire ropes 13 between the hoist beam 12 and the load hoist 14 can rotate relative to the chain hoist 11 along with the hoist beam 12, thereby ensuring that the hoist beam 12 is always kept horizontal, the load can be kept balanced in up-down hoisting, the gravity center of the load has no offset, and the four-rope hoisting of the load is safe and reliable;

in addition, the up-down two-section type hoisting system simplifies the structure of the existing hoisting system, obviously reduces the overall dimension of the whole hoisting system, can reduce the length of a load lifting appliance by more than 50 percent, increases the working range of the lifting appliance and obviously increases the operation limit dimension of the whole hoisting equipment.

Moreover, the up-down two-section type lifting system abandons the mode of two sets of lifting mechanisms in the prior art, thereby fundamentally avoiding the operation impact on the load due to asynchronous lifting between the two sets of mechanisms and leading the load lifting to be more stable and safer.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides a hoisting system, its characterized in that, hoisting system includes support, hoisting mechanism, hoist crossbeam, bears wire rope, load hoist, hoisting mechanism's upper end connect with articulated mode in fixed fulcrum on the support, hoisting mechanism's lower extreme is provided with the lifting hook, the lifting hook pass through the hinge connect in the central point of hoist crossbeam puts, the hoist crossbeam passes through bear wire rope and be connected to the load hoist, the hoist crossbeam is provided with four wire rope fixed points, be provided with four hoisting points on the load hoist, four bear wire rope and connect respectively the wire rope fixed point with between the hoisting point.

2. A hoisting system as claimed in claim 1, wherein the hoisting mechanism is an endless chain hoist, and a thrust slewing bearing is provided between the hook and the body of the endless chain hoist.

3. A hoist system according to claim 2, characterised in that the thrust slew bearing is provided with a locking mechanism.

4. A hoist system as claimed in claim 2, wherein the chain block is of the dual motor, dual brake type, comprising two motors and associated two brakes, sprockets, chains and hooks.

5. A hoisting system as claimed in claim 1, wherein the support frame is provided with a guide ring for guiding the load-bearing wire rope up and down.

6. A hoisting system as claimed in claim 1, wherein the load spreader is a spreader in the form of a disc, the four lifting points being arranged symmetrically about the centre of the upper surface of the load spreader, and four symmetrical grapples for suspending loads being arranged below the load spreader.

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