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Synchronous adjusting method of balance beam hanging points of hoisting equipment with ultrahigh pump lift

A lifting equipment, synchronous adjustment technology, applied in the direction of load hanging components, transportation and packaging, can solve the problem of wire ropes intertwined at the lifting point, avoid accidents, reduce the asynchronous value, and improve the average lifting speed.

Active Publication Date: 2012-05-23
HENAN WEIHUA HEAVY MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for synchronous adjustment of the lifting points of the balance beam of the ultra-high-lift lifting equipment, so that the lifting points of the balance beam meet the synchronization requirements during the lifting process, and solve the problem that the wire ropes of the lifting points are entangled with each other

Method used

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  • Synchronous adjusting method of balance beam hanging points of hoisting equipment with ultrahigh pump lift
  • Synchronous adjusting method of balance beam hanging points of hoisting equipment with ultrahigh pump lift
  • Synchronous adjusting method of balance beam hanging points of hoisting equipment with ultrahigh pump lift

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] A lifting mechanism has two lifting points, and the two lifting points are respectively driven by two multi-layer winding reels of steel wire ropes, and the two reels use a mechanical method to ensure the synchronization of the speed of the two reels. The lifting height of the lifting mechanism is equal to 400m, the multiplier m of the pulley block is 1, and the length of the reel is L t Equal to 780mm, roll diameter D t Equal to 500mm, wire rope diameter d s Equal to 21.5mm, the length of wire rope that needs to be wound onto each drum is 410m. This embodiment is to lift heavy objects in a certain deep well.

[0103] Method of the present invention is as follows:

[0104] 1) According to the actual situation, such as well diameter, well components, construction technology and other conditions, the maximum length of the beam is determined to be 1350mm, the maximum asynchronous value Δmax that the balance beam can balance is 2200mm, and the asynchronous value of the a...

Embodiment 2

[0109] The method of this embodiment is basically the same as that of Embodiment 1, the difference is that step 3) the method of selecting b value is different:

[0110] When the reel is fully wound with 5 layers of steel wire rope, even if n=5, using the formulas (6), (8) and (9) can get:

[0111] N = L t / d s =780 / 21.5 =36.28(circle)

[0112] N 5 = n L t / d s =5×780 / 21.5 =181.4 (circle)

[0113] L 5 = nπL t (D t / d s +n) =5×π×780×( 500 / 21.5+5)=346196 (mm)

[0114] Since the length of the steel wire rope that needs to be wound on each drum is 410m, there are 410000-346196=63804mm of steel wire rope to be wound on the 6th floor, and the length of each coil of the steel wire rope on the 6th floor is π[ D t +(2×6-1)d s ] = π[ 500+(2×6―1)×21.5]=2313.78mm, on the 6th floor, 63804 / 2313.78=27.58 circles, namely N na =27.58 circles. There are 36.28-27.58=8.7 coils of wire rope on the 6th floor, which are empty.

[0115] First select the thickness b of the a...

Embodiment 3

[0129] The method of this embodiment is basically the same as that of Embodiment 2, the difference is that step 3) the method of selecting the b value is different:

[0130] Assuming that the out-of-synchronization value Δ=2360mm is all compensated by the original 1~(n-1) layer steel wire rope after adding the flange to initially select b, that is, let Δ in formula (21) ， =Δ,N nb =0 to initially determine b:

[0131] b=Δ ， m / [nπ(n - 1) + 2N nb πd s ]

[0132] =2360×1 / [6π(6-1)+2×0×π×21.5]=25.04mm

[0133] Take b=25mm for rounding.

[0134] When the reel is fully wound with 5 layers of steel wire rope, even if n=5, using the formulas (6), (8) and (9) can get:

[0135] N = L t / d s =780 / 21.5 =36.28(circle)

[0136] N 5 = n L t / d s =5×780 / 21.5 =181.4 (circle)

[0137] L 5 = nπL t (D t / d s+n) =5×π×780×( 500 / 21.5+5)=346196 (mm)

[0138] In the formula:

[0139] N - the number of turns of each layer of steel wire rope;

[0140] N 5 - the total num...

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Abstract

The invention discloses a synchronous adjusting method of balance beam hanging points of hoisting equipment with an ultrahigh pump lift. Aiming at the condition that asynchronous values of all hanging points exceed the maximum limit, the invention adopts the method of loading an adjusting flange on a hanging point steel wire drum to shorten the length of the drum and reach the aim of acceleratingthe lifting speed of a corresponding hanging pint so as to decrease the asynchronous values among all the hanging points of an original balance beam and synchronize the all the hanging points. The invention solves the problems of over balance beam inclination due to the asynchronization of the hanging points and mutual coiling of steel wires in the prior art, prevents accidents from occurring andcan adjust the initial positions of the hanging points to realize the aim in case the asynchronous values of all the hanging points do not exceed the maximum limit.

Description

technical field [0001] The invention relates to a method for synchronously adjusting suspension points of a balance beam of an ultra-high-lift hoisting equipment, and belongs to the technical field of hoisting equipment. Background technique [0002] In the design of the hoisting mechanism of hoisting equipment, it is often used that multiple lifting points jointly lift the same heavy object. When working with multiple lifting points, it is difficult to keep the lifting speed of each lifting point completely consistent. This is the problem of out-of-synchronization of multiple lifting points, which makes the wire ropes of each lifting point entangled with each other, resulting in the lifting mechanism not working normally, and even causing accidents. . [0003] The following takes double lifting points as an example to introduce the asynchronous problem of the lifting points of the lifting equipment, such as figure 1 As shown, 1 in the figure is a balance beam (length L), ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C1/28
Inventor 孙明尧
Owner HENAN WEIHUA HEAVY MACHINE