CN110422749B - Bidirectional hydraulic adjusting lifting appliance and application method thereof - Google Patents

Bidirectional hydraulic adjusting lifting appliance and application method thereof Download PDF

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Publication number
CN110422749B
CN110422749B CN201910733440.0A CN201910733440A CN110422749B CN 110422749 B CN110422749 B CN 110422749B CN 201910733440 A CN201910733440 A CN 201910733440A CN 110422749 B CN110422749 B CN 110422749B
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rigging
hydraulic
gravity center
axis
hydraulic cylinders
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CN110422749A (en
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杨超
赵春江
郑强
刘艳红
郭永胜
李旭昆
马辉
赵丽杰
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Juli Sling Co Ltd
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Juli Sling Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00Load-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
    • B66C1/10Load-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
    • B66C1/12Slings comprising chains, wires, ropes, or bands; Nets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The bidirectional hydraulic adjusting lifting appliance comprises: the lifting device comprises main beams, auxiliary beams, lower steel wire rope rigging, non-joint rope loop rigging, guide rails, rigging hydraulic cylinders, sliding blocks, hydraulic stations and longitudinal hydraulic cylinders, wherein a hydraulic station is arranged in the center of each main beam, one guide rail is respectively fixed on the main beams on two sides of the hydraulic station, two guide rails on the same main beam are arranged on a straight line, one sliding block is arranged on each guide rail, the sliding blocks slide on the guide rails, one ends of the longitudinal hydraulic cylinders are respectively fixed at two ends of each main beam, the other ends of the longitudinal hydraulic cylinders are respectively connected with the sliding blocks, two ends of the two auxiliary beams are respectively hinged with the sliding blocks, a rigging hydraulic cylinder is arranged between two ends of the two auxiliary beams and the non-joint rope loop rigging, the hydraulic stations arranged on each main beam are respectively connected with the two longitudinal hydraulic cylinders and the two rigging hydraulic cylinders arranged on the main beams through information wires, and the lifting device can rapidly adjust the positions of lifting points through the longitudinal hydraulic cylinders and the rigging hydraulic cylinders, and the lifting balance is met.

Description

Bidirectional hydraulic adjusting lifting appliance and application method thereof
Technical Field
The invention relates to a lifting appliance used in the lifting field of large irregular modules, in particular to a bidirectional hydraulic adjusting lifting appliance and a use method thereof.
Background
The lifting appliance is mainly used for lifting large modules, and the modules are characterized by irregular shapes, serious gravity center deviation, larger load and larger height difference.
The ship is generally used for port and dock operation, and the module is hoisted to the upper deck from the shore through a ship machine.
When the module gravity center offset is larger, the lifting appliance can rapidly adjust the position of the lifting point through two groups of hydraulic cylinders, so that the lifting balance is met.
When the height of the module is too high and the hoisting of the ship machine is affected, the length of the upper steel wire rope rigging can be adjusted through the hydraulic cylinder, so that the on-site hoisting is met.
The port operation is difficult in condition, human resources are deficient, the operation of the lifting appliance is simple, and the efficiency is high. The automatic adjustment of the lifting appliance is realized through remote hydraulic adjustment, and the working efficiency is improved.
Disclosure of Invention
The invention aims to solve the problem that the existing lifting appliance cannot hoist large irregular modules, and provides a bidirectional hydraulic adjusting lifting appliance and a use method thereof.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, which comprises: girder, auxiliary girder, lower part wire rope rigging and no connect rope loop rigging, two girders parallel placement, two auxiliary girders of fixed between two girder upper ends, two auxiliary girders are parallel to each other and perpendicular with the girder, articulate with the one end of no connect rope loop rigging at the both ends of every auxiliary girder, the other end of no connect rope loop rigging hangs on last hoisting point, is equipped with a plurality of lower part wire rope rigging at every girder lower extreme, wherein: the bidirectional hydraulic adjusting lifting appliance further comprises: the hydraulic station is characterized in that a hydraulic station is arranged in the center of each girder, a guide rail is respectively fixed on girders on two sides of the hydraulic station, two guide rails on the same girder are arranged on a straight line, a slide block is arranged on each guide rail, the slide block slides on the guide rails, one end of each longitudinal hydraulic cylinder is respectively fixed at two ends of each girder, the other end of each longitudinal hydraulic cylinder is respectively connected with the slide block, two ends of each auxiliary girder are respectively hinged with the slide block, a rigging hydraulic cylinder is arranged between two ends of each auxiliary girder and a non-joint rope loop rigging, and the hydraulic station arranged on each girder is respectively connected with the two longitudinal hydraulic cylinders and the two rigging hydraulic cylinders arranged on the girder through information wires.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, wherein: the other end of the longitudinal hydraulic cylinder is a piston rod joint of the longitudinal hydraulic cylinder, the piston rod joint is hinged with one lifting lug on the sliding block through a pin shaft, the end part of the auxiliary beam is provided with two lifting lugs, the two lifting lugs are respectively an upper lifting lug and a lower lifting lug, the other lifting lug on the sliding block is hinged with the lower lifting lug on the end part of the auxiliary beam through a pin shaft, the upper lifting lug on the end part of the auxiliary beam is hinged with the lifting lug arranged at one end of the rigging hydraulic cylinder through a pin shaft, the other end of the rigging hydraulic cylinder is connected with one end of the non-joint rope loop rigging through a shackle, and the other end of the non-joint rope loop rigging is hung on an upper lifting point.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, wherein: the shackle is a flat shackle.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, wherein: the endless rope loop rigging is an endless steel wire loop rigging.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, wherein: the longitudinal hydraulic cylinder is a foot rest fixed hydraulic cylinder.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, wherein: the rigging hydraulic cylinder is a tail suspension type hydraulic cylinder.
The invention relates to a bidirectional hydraulic adjusting lifting appliance, wherein: 4-8 lower steel wire rope rigging are arranged at the lower end of each girder.
The invention relates to a use method of a bidirectional hydraulic adjusting lifting appliance, which is characterized in that a straight line which is arranged between two main beams and parallel to the main beams is defined as an X axis, a straight line which is vertical to the X axis is defined as a Y axis, an intersection point of the X axis and the Y axis is defined as an original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the original gravity center O of the lifting appliance is arranged on the geometric center of an upper lifting point, and a coordinate system formed by the X axis and the Y axis is arranged in a plane formed by the main beams and an auxiliary beam, wherein:
when the gravity center B of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center B of the hung object is on the X axis;
the two longitudinal hydraulic cylinders fixed at one end of the two main beams synchronously extend or shorten, the two longitudinal hydraulic cylinders fixed at the other end of the two main beams synchronously shorten or extend, the four sliding blocks slide in the same direction along the guide rail, and the auxiliary beam, the non-joint rope loop rigging, the rigging hydraulic cylinder and the upper lifting point simultaneously move in parallel along the positive direction or the negative direction of the X axis, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance coincides with the gravity center B of the lifted object;
secondly, when the gravity center C of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center C of the hung object is on the Y axis;
the four longitudinal hydraulic cylinders are fixed, and the four rigging hydraulic cylinders are lengthened or shortened, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance is overlapped with the gravity center C of the lifted object;
thirdly, when the gravity center A of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center A of the hung object deviates from the X axis and the Y axis simultaneously;
the two longitudinal hydraulic cylinders fixed at one ends of the two main beams synchronously extend or shorten, the two longitudinal hydraulic cylinders fixed at the other ends of the two main beams synchronously shorten or extend, the four sliding blocks slide along the guide rail in the same direction, the auxiliary beam, the endless rope loop rigging, the rigging hydraulic cylinder and the upper lifting point simultaneously move to a D position along the positive direction or the negative direction of the X axis in parallel, the connecting line of the D position and the gravity center A of the suspended object is parallel to the Y axis, and then the four rigging hydraulic cylinders extend or shorten, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance coincides with the gravity center A of the suspended object.
The invention relates to a use method of a bidirectional hydraulic adjusting lifting appliance, which comprises the following steps: when the height of the lifted object is too high and the ship machine cannot meet the lifting requirement, the length of the hydraulic cylinders of the rigging is shortened at the same time, so that the bidirectional hydraulic adjusting lifting appliance is lifted in the height direction, and then the original gravity center O of the bidirectional hydraulic adjusting lifting appliance is overlapped with the gravity center of the lifted object according to the adjusting method in the step (I), the step (II) or the step (III).
The invention relates to a use method of a bidirectional hydraulic adjusting lifting appliance, which comprises the following steps: the gravity center of the hung object and the original gravity center O of the lifting appliance are vertically projected onto a coordinate system formed by an X axis and a Y axis, four non-joint rope loop rigging are equally arranged at the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, and the corresponding longitudinal hydraulic cylinders on the two main beams are the same in extension or shortening length.
The bidirectional hydraulic adjusting lifting appliance is mainly used for lifting large modules, and the modules are characterized by irregular appearance, serious gravity center deviation, larger load and larger height difference. The ship is generally used for port and dock operation, and the module is hoisted to the upper deck from the shore through a ship machine. When the module gravity center offset is larger, the bidirectional hydraulic adjusting lifting appliance can quickly adjust the position of the lifting point through the longitudinal hydraulic cylinder and the rigging hydraulic cylinder, so that the lifting balance is met. When the height of the module is too high and the hoisting of the ship machine is affected, the length of the upper steel wire rope rigging can be adjusted through the rigging hydraulic cylinder, so that the on-site hoisting is met. The bidirectional hydraulic adjusting lifting tool is simple to operate, high in efficiency and capable of being adjusted remotely, automatic adjustment of the lifting tool is achieved, and working efficiency is improved.
Description of the drawings:
FIG. 1 is a schematic forward view of a bi-directional hydraulic adjustment spreader of the present invention;
FIG. 2 is a schematic plan view of a bi-directional hydraulic adjustment spreader of the present invention;
FIG. 3 is an enlarged partial schematic view of FIG. 1;
fig. 4 is a schematic view of the bi-directional hydraulic pressure adjusting spreader of the present invention in a depression direction, showing three cases in which the center of gravity of the object to be lifted deviates from the original center of gravity of the bi-directional hydraulic pressure adjusting spreader.
In fig. 1 to 3, reference numeral 1 denotes a longitudinal hydraulic cylinder; reference numeral 2 is a guide rail; reference numeral 3 is a lifting lug; reference numeral 4 is an auxiliary beam; reference numeral 5 is a hydraulic cylinder of a rigging; reference numeral 6 is shackle; reference numeral 7 is a non-joint rope loop rigging; reference numeral 8 is a main beam; reference numeral 9 is a slider; reference numeral 10 is an upper hanging point; reference numeral 11 is a lower wire rope rigging; reference numeral 12 is a hydraulic station.
Detailed Description
As shown in fig. 1 to 3, a bidirectional hydraulic pressure adjusting hanger of the present invention includes: the two main beams 8, the auxiliary beams 4, the lower steel wire rope rigging 11, the endless rope loop rigging 7, the guide rail 2, the rigging hydraulic cylinder 5, the sliding block 9, the hydraulic station 12 and the longitudinal hydraulic cylinder 1 are arranged in parallel, the two auxiliary beams 4 are fixed between the upper ends of the two main beams 8, the two auxiliary beams 4 are parallel to each other and perpendicular to the main beams 8, and 4-8 lower steel wire rope rigging 11 are arranged at the lower end of each main beam 8. The center of each girder 8 is provided with a hydraulic station 12, the girders 8 on two sides of the hydraulic station 12 are respectively fixed with a guide rail 2, two guide rails 2 on the same girder 8 are on a straight line, each guide rail 2 is provided with a sliding block 9, the sliding block 9 slides on the guide rail 2, one end of a longitudinal hydraulic cylinder 1 is respectively fixed at two ends of each girder 8, the other end of the longitudinal hydraulic cylinder 1 is a piston rod joint of the longitudinal hydraulic cylinder 1, the sliding block 9 is provided with two lifting lugs 3, the piston rod joint is hinged with one lifting lug 3 on the sliding block 9 through a pin shaft, the end of a secondary girder 4 is provided with two lifting lugs 3, the two lifting lugs 3 are respectively an upper lifting lug and a lower lifting lug, the other lifting lug 3 on the sliding block 9 is hinged with the lower lifting lug on the end of the secondary girder 4 through a pin shaft, the upper part of the end of the secondary girder 4 is hinged with the lifting lug 3 on one end of the cable tool hydraulic cylinder 5 through a pin shaft, the other end of the cable tool hydraulic cylinder 5 is connected with one end of the endless cable 7 through a shackle 6, and the other end of the endless cable 7 is connected with the other end of the endless cable 7 through a lifting lug 10 on the upper lifting lug 10 of the endless cable 7. The hydraulic station 12 mounted on each girder 8 is connected to the two longitudinal hydraulic cylinders 1 and the two rigging hydraulic cylinders 5 mounted on the girder 8, respectively, by means of information lines.
The shackle 6 is a flat shackle, the endless rope loop rigging 7 is an endless steel wire rope loop rigging, the longitudinal hydraulic cylinder 1 is a foot rest fixed hydraulic cylinder, and the rigging hydraulic cylinder 5 is a tail suspension hydraulic cylinder.
As shown in fig. 4, a straight line which is intermediate between two main beams 8 and parallel to the main beams 8 is defined as an X-axis, a straight line which is perpendicular to the X-axis is defined as a Y-axis, an intersection point of the X-axis and the Y-axis is defined as an original center of gravity O of the bidirectional hydraulic adjusting hoist, the original center of gravity O of the hoist is on the geometric center of the upper suspension point 10, a coordinate system which is composed of the X-axis and the Y-axis is in a plane which is composed of the main beams 8 and the auxiliary beams 4, the center of gravity of the suspended object and the original center of gravity O of the hoist are vertically projected onto a coordinate system which is composed of the X-axis and the Y-axis, four endless rope slings 7 are equally arranged at the original center of gravity O of the bidirectional hydraulic adjusting hoist, and the lengths of extension or shortening of the corresponding longitudinal hydraulic cylinders 1 on the two main beams 8 are the same, the use method of the bidirectional hydraulic adjusting hoist of the present invention includes:
when the gravity center B of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center B of the hung object is on the X axis;
the two longitudinal hydraulic cylinders 1 fixed at one end of the two main beams 8 synchronously extend or shorten, the two longitudinal hydraulic cylinders 1 fixed at the other end of the two main beams 8 synchronously shorten or extend, the four sliding blocks 9 slide along the guide rail 2 in the same direction, and the auxiliary beam 4, the non-joint rope loop rigging 7, the rigging hydraulic cylinder 5 and the upper lifting point 10 simultaneously move in parallel along the positive direction or the negative direction of the X axis, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance coincides with the gravity center B of the lifted object;
secondly, when the gravity center C of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center C of the hung object is on the Y axis;
the four longitudinal hydraulic cylinders 1 are fixed, and the four rigging hydraulic cylinders 5 are lengthened or shortened, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance is overlapped with the gravity center C of the lifted object;
thirdly, when the gravity center A of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center A of the hung object deviates from the X axis and the Y axis simultaneously;
the two longitudinal hydraulic cylinders 1 fixed at one end of the two main beams 8 synchronously extend or shorten, the two longitudinal hydraulic cylinders 1 fixed at the other end of the two main beams 8 synchronously shorten or lengthen, the four sliding blocks 9 slide along the guide rail 2 in the same direction, the auxiliary beam 4, the non-joint rope loop rigging 7, the rigging hydraulic cylinder 5 and the upper lifting point 10 simultaneously move to a position D in parallel along the positive direction or the negative direction of the X axis, the connecting line of the position D and the gravity center A of the suspended object is parallel to the Y axis, and then the four rigging hydraulic cylinders 5 extend or shorten, so that the original gravity center O of the bidirectional hydraulic adjusting sling coincides with the gravity center A of the suspended object;
fourthly, when the height of the lifted object is too high, the ship machine cannot meet the lifting requirement;
the length of the hydraulic cylinders 5 of the rigging is shortened at the same time, so that the bidirectional hydraulic adjusting lifting appliance of the invention is lifted in the height direction, and then the original gravity center O of the bidirectional hydraulic adjusting lifting appliance is overlapped with the gravity center of the lifted object according to the adjusting method of the step (one), the step (two) or the step (three).
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.

Claims (10)

1. A bi-directional hydraulically adjustable spreader, the spreader comprising: girder (8), auxiliary girder (4), lower part wire rope rigging (11) and jointless quality rope ring rigging (7), two girders (8) parallel placement, fixed two auxiliary girders (4) between two girder (8) upper ends, two auxiliary girders (4) are parallel to each other and perpendicular with girder (8), both ends at every auxiliary girder (4) are articulated with the one end of jointless quality rope ring rigging (7), the other end of jointless quality rope ring rigging (7) is hung on hoisting point (10), be equipped with a plurality of lower part wire rope rigging (11) at every girder (8) lower extreme, its characterized in that: the bidirectional hydraulic adjusting lifting appliance further comprises: the hydraulic station comprises guide rails (2), rigging hydraulic cylinders (5), sliding blocks (9), hydraulic stations (12) and longitudinal hydraulic cylinders (1), wherein the hydraulic stations (12) are arranged in the center of each main beam (8), one guide rail (2) is respectively fixed on the main beams (8) on two sides of each hydraulic station (12), two guide rails (2) on the same main beam (8) are arranged on a straight line, one sliding block (9) is arranged on each guide rail (2), the sliding blocks (9) slide on the guide rails (2), one end of each longitudinal hydraulic cylinder (1) is respectively fixed at two ends of each main beam (8), the other end of each longitudinal hydraulic cylinder (1) is respectively connected with the corresponding sliding block (9), two ends of each auxiliary beam (4) are respectively hinged with the corresponding sliding block (9), one rigging hydraulic cylinder (5) is arranged between two ends of each auxiliary beam (4) and a non-joint ring rigging hydraulic cylinder (7), and the hydraulic stations (12) arranged on each main beam (8) are respectively connected with the two rigging hydraulic cylinders (1) and the corresponding two longitudinal hydraulic cylinders (5) arranged on the main beam (8) through information lines.
2. The bi-directional hydraulic pressure regulating spreader of claim 1, wherein: two lifting lugs (3) are arranged on the sliding block (9), the other end of the longitudinal hydraulic cylinder (1) is a piston rod joint of the longitudinal hydraulic cylinder (1), the piston rod joint is hinged with one lifting lug (3) on the sliding block (9) through a pin shaft, two lifting lugs (3) are arranged at the end part of the auxiliary beam (4), the two lifting lugs (3) are respectively an upper lifting lug and a lower lifting lug, the other lifting lug (3) on the sliding block (9) is hinged with the lower lifting lug at the end part of the auxiliary beam (4) through a pin shaft, the upper lifting lug at the end part of the auxiliary beam (4) is hinged with the lifting lug (3) arranged at one end of the rigging hydraulic cylinder (5) through a pin shaft, the other end of the rigging hydraulic cylinder (5) is connected with one end of the endless rope loop rigging (7) through a shackle (6), and the other end of the endless rope loop rigging (7) is hung on the upper lifting point (10).
3. The bi-directional hydraulic pressure regulating spreader of claim 2, wherein: the shackle (6) is a flat shackle.
4. The bi-directional hydraulic pressure regulating spreader of claim 3, wherein: the non-joint rope loop rigging (7) is a non-joint steel wire rope loop rigging.
5. The bi-directional hydraulic pressure regulation hoist of claim 4, characterized in that: the longitudinal hydraulic cylinder (1) is a foot rest fixed hydraulic cylinder.
6. The bi-directional hydraulic pressure regulation hoist of claim 5, characterized in that: the rigging hydraulic cylinder (5) is a tail suspension type hydraulic cylinder.
7. The bi-directional hydraulic pressure regulation hoist of claim 6, characterized in that: 4-8 lower steel wire rope tools (11) are arranged at the lower end of each main beam (8).
8. A method of using the bi-directional hydraulic adjustment spreader of claim 7, defining a straight line between two girders (8) and parallel to the girders (8) as X-axis, defining a straight line perpendicular to said X-axis as Y-axis, defining the intersection of the X-axis and the Y-axis as the original center of gravity O of the bi-directional hydraulic adjustment spreader on the geometric center of the upper lifting point (10), the coordinate system of said X-axis and Y-axis being in the plane consisting of girders (8) and auxiliary girders (4), characterized in that:
when the gravity center B of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center B of the hung object is on the X axis;
the two longitudinal hydraulic cylinders (1) fixed at one end of the two main beams (8) synchronously extend or shorten, the two longitudinal hydraulic cylinders (1) fixed at the other end of the two main beams (8) synchronously shorten or extend, the four sliding blocks (9) slide in the same direction along the guide rail (2), and the auxiliary beam (4), the non-joint rope loop rigging (7), the rigging hydraulic cylinder (5) and the upper lifting point (10) simultaneously move in parallel along the positive direction or the negative direction of the X axis, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance coincides with the gravity center B of the lifted object;
secondly, when the gravity center C of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center C of the hung object is on the Y axis;
the four longitudinal hydraulic cylinders (1) are fixed, and the four rigging hydraulic cylinders (5) are lengthened or shortened, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance is overlapped with the gravity center C of the lifted object;
thirdly, when the gravity center A of the hung object deviates from the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, the gravity center A of the hung object deviates from the X axis and the Y axis simultaneously;
two longitudinal hydraulic cylinders (1) fixed at one ends of two main beams (8) synchronously extend or shorten, two longitudinal hydraulic cylinders (1) fixed at the other ends of the two main beams (8) synchronously shorten or extend, four sliding blocks (9) slide along the guide rail (2) in the same direction, an auxiliary beam (4), a non-joint rope loop rigging (7), a rigging hydraulic cylinder (5) and an upper lifting point (10) simultaneously move to a position D along the positive direction or the negative direction of an X axis in parallel, the connecting line of the position D and the gravity center A of a lifted object is parallel to the Y axis, and then the four rigging hydraulic cylinders (5) extend or shorten, so that the original gravity center O of the bidirectional hydraulic adjusting lifting appliance coincides with the gravity center A of the lifted object.
9. The method of use according to claim 8, wherein: when the height of the lifted object is too high and the ship machine cannot meet the lifting requirement, the length of the hydraulic cylinders (5) of the rigging is shortened at the same time, so that the bidirectional hydraulic adjusting lifting appliance is lifted in the height direction, and then the original gravity center O of the bidirectional hydraulic adjusting lifting appliance is overlapped with the gravity center of the lifted object according to the adjusting method in the step (I), the step (II) or the step (III).
10. The method of use according to claim 9, wherein: the gravity center of the hung object and the original gravity center O of the lifting appliance are vertically projected onto a coordinate system formed by an X axis and a Y axis, four non-joint rope loop rigging (7) are equally arranged at the original gravity center O of the bidirectional hydraulic adjusting lifting appliance, and the extension or shortening lengths of the corresponding longitudinal hydraulic cylinders (1) on the two main beams (8) are the same.
CN201910733440.0A 2019-08-15 2019-08-15 Bidirectional hydraulic adjusting lifting appliance and application method thereof Active CN110422749B (en)

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GB1186738A (en) * 1967-11-06 1970-04-02 Gen Electric & English Elect Improvements in or relating to Load-Lifting Devices incorporating Load Spreaders
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CN207608204U (en) * 2017-12-22 2018-07-13 江苏金风科技有限公司 Balance hanging beam
CN210795496U (en) * 2019-08-15 2020-06-19 巨力索具股份有限公司 Bidirectional hydraulic adjusting lifting appliance

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