CN113651230B - Interval-adjustable lifting device and method - Google Patents
Interval-adjustable lifting device and method Download PDFInfo
- Publication number
- CN113651230B CN113651230B CN202110881675.1A CN202110881675A CN113651230B CN 113651230 B CN113651230 B CN 113651230B CN 202110881675 A CN202110881675 A CN 202110881675A CN 113651230 B CN113651230 B CN 113651230B
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- Prior art keywords
- lifting
- pushing
- hanging beam
- lifting device
- leveling
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Classifications
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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
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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
- B66C13/00—Other constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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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
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
Abstract
The invention discloses a lifting device and a lifting method with adjustable spacing, and aims to solve the defect that the lifting beam is unevenly stressed and cannot achieve the expected effect when a lifting device lifts a heavy object. The lifting device comprises a lifting seat, a lifting beam arranged on the lifting seat, a plurality of upper pulleys, a plurality of lower pulleys and lifting ropes, wherein the plurality of upper pulleys, the plurality of lower pulleys and the lifting ropes are arranged on the lifting beam, the plurality of pulley mounting holes for mounting the upper pulleys are arranged on the lifting beam along the length direction, the upper pulleys are detachably connected with the pulley mounting holes, the number of the pulley mounting holes is more than that of the upper pulleys, the lifting ropes bypass all the upper pulleys and the lower pulleys, the two ends of the lifting ropes are respectively connected with the two ends of the lifting beam, and the lifting hooks are arranged on the lower pulleys. The lifting device can disperse stress when lifting heavy objects, stress is uniform, stress positions can be adjusted according to different structures, and lifting requirements of different structures are met.
Description
Technical Field
The invention relates to a hoisting technology, in particular to a hoisting device and a hoisting method with adjustable distance.
Background
At present, the weight of a single total section of a large ocean engineering structure is 300-500 tons, some of the large ocean engineering structures are even nearly kilotons, and the arrangement of lifting points of the large ocean engineering structure is considered to consider both the performance of a crane and the local strength and the rigidity of the large ocean engineering structure. In order to ensure the hoisting safety of the structure, the hoisting design process is generally prone to small ton hoisting points and the principle of scattered arrangement is adopted, and the purpose can be achieved through the use of hoisting beams or hoisting rows. However, the conventional hanging beam or hanging bar is only stressed in a scattered way by the steel beam itself, and is affected by the gravity center position of the hung object, so that the stress of the ordinary hanging bar or hanging bar is uneven, and sometimes the expected effect cannot be achieved.
Disclosure of Invention
In order to overcome the defects, the invention provides a lifting device and a lifting method with adjustable spacing, which can disperse stress and even stress when lifting heavy objects, can adjust stress positions according to different structures, and can meet the lifting requirements of different structures.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a hoisting apparatus of adjustable interval, including lifting seat, install the hanging beam on the lifting seat, install a plurality of upper pulleys on the hanging beam, a plurality of lower pulleys, lifting rope, be equipped with a plurality of pulley mounting holes that are used for installing the upper pulleys along length direction on the hanging beam, upper pulleys and pulley mounting hole can dismantle the connection, pulley mounting hole quantity is more than upper pulley quantity, the lifting rope walks around all upper pulleys and lower pulleys, and the both ends of lifting rope are connected respectively at hanging beam both ends, install the lifting hook on the lower pulley.
When the structure is hoisted, a plurality of hoisting points corresponding to the lifting hooks are set on the structure, and hoisting ropes are respectively connected between the lifting hooks and the hoisting points. The upper pulleys form fixed pulleys, the lower pulleys form movable pulleys, a plurality of upper pulleys are arranged on the hanging beam, and the gravity of the structure is dispersed. The number of the pulley mounting holes arranged on the hanging beam is equal to the number of the upper pulleys, so that the mounting positions of the upper pulleys can be adjusted, and the hanging beam can be adjusted to the balance position when different structures are hoisted. The lifting device can disperse stress when lifting heavy objects, stress is uniform, stress positions can be adjusted according to different structures, and lifting requirements of different structures are met.
Preferably, support legs are arranged at the lower positions of the two ends of the hanging beam, and the two ends of the hanging beam can be supported on the support legs. In the lifting preparation stage and the lifting beam balance adjustment stage, the supporting legs support the lifting beam, so that the operation is convenient.
Preferably, a pin shaft is arranged in the middle of the hanging beam and is rotatably connected to the lifting seat, adjusting grooves are formed in the two ends of the hanging beam, adjusting blocks capable of transversely moving are arranged in the adjusting grooves, and the two ends of the hanging rope are respectively connected to the two adjusting blocks; lifting support columns are mounted on two sides of the pin shaft on the lifting seat, and the lifting beam can be supported on the support columns.
The middle part of the hanging beam is rotatably arranged on the lifting seat through a pin shaft, so that the stress balance of the left side and the right side of the hanging beam can be conveniently adjusted, and structural damage caused by overlarge local stress is avoided. When the hanging beam is unbalanced, the adjusting block at one declining end is moved to the direction close to the middle of the hanging beam, so that the hanging beam is convenient to level. In the hanging beam leveling stage, the supporting columns are in an active state and can be lifted, and after the hanging beam is balanced, the supporting columns are locked and cannot lift, so that the supporting columns can stably support the hanging beam.
Preferably, the lifting seat is correspondingly provided with an oil cylinder, the lower end of the support column is adaptively arranged in the oil cylinder, a return spring is arranged in the oil cylinder and is abutted to the support column, the oil cylinder is communicated with an oil delivery pipe, and an electromagnetic valve is arranged on the oil delivery pipe.
In the lifting beam leveling stage, the electromagnetic valve is in an open state, the support column is in an active state and can be lifted, the lower end of the support column moves in the oil cylinder, and oil can be conveyed in the oil conveying pipe; when the hanging beam is balanced, the electromagnetic valve is closed to cut off the delivery of oil, and the support column is locked and can not lift at the moment, so that the support column can stably support the hanging beam.
Preferably, pushing rods are arranged on two sides of the pin shaft on the lifting seat, leveling pushing blocks capable of transversely moving are correspondingly arranged on the lifting beam and the pushing rods, pushing surfaces which are obliquely arranged are arranged on the leveling pushing blocks, the upper ends of the pushing rods are attached to the pushing surfaces, and the two leveling pushing blocks are respectively connected with the two adjusting blocks.
If the hanging beam is unbalanced, the hanging beam automatically levels, the heavier side of the hanging beam is declined, and the leveling push block corresponding to the declined side is pushed by the push rod, so that the adjusting block on the declined side is pushed to a direction close to the middle of the hanging beam, and the hanging beam automatically levels.
Preferably, a connecting rod is connected between the leveling push block and the adjusting block, a ratchet bar is arranged on the connecting rod, a pawl is arranged on the hanging beam, the end part of the pawl is adaptively inserted between two adjacent ratchet bars of the ratchet bar, and a positioning spring is arranged between the leveling push block and the hanging beam.
In the automatic leveling process of the hanging beam, the leveling pushing block is pushed by the pushing rod, the adjusting block is driven to move through the connecting rod, at the moment, the ratchet bar can slide over the pawl, and the positioning spring plays a role in positioning, so that the stable movement of the adjusting block is facilitated. When the hanging beam is leveled in place, the end parts of the pawls are inserted between two adjacent ratchets of the ratchet bar to position the adjusting block.
Preferably, the pawl is connected with a shift lever for shifting the pawl to rotate. The pawl is driven to rotate by the deflector rod, so that the pawl is separated from the ratchet bar, and the return of the adjusting block and the leveling push block is facilitated.
Preferably, the upper end of the pushing rod is provided with a roller, and the roller is attached to the pushing surface. The roller is arranged to reduce friction force in the pushing process, so that pushing is stable and reliable.
Preferably, the lifting seat is provided with two extending parts extending downwards, the extending parts are provided with supporting blocks, the supporting column and the pushing rod on one side of the pin shaft are arranged on one supporting block, and the supporting column and the pushing rod on the other side of the pin shaft are arranged on the other supporting block. The extension part is convenient for installing the support column and the push rod.
A lifting method of a lifting device with adjustable spacing uses the lifting device with adjustable spacing to lift and hoist a structure, comprising the following steps:
a. determining hoisting points, installing an upper pulley on a pulley installation hole at a proper position according to the shape of a structure, determining a plurality of hoisting points corresponding to the lifting hooks on the structure, and respectively connecting hoisting ropes between the lifting hooks and the hoisting points;
b. c, testing and hanging, wherein the crane is connected to the lifting seat to test and hang the whole lifting device, at the moment, the support column can be lifted up and down, whether the lifting beam is balanced or not is observed, and if the lifting beam is balanced, the step C is carried out; if the hanging beam is unbalanced, the hanging beam automatically levels, the heavier side of the hanging beam is declined, and a leveling pushing block corresponding to the declined side is pushed by a pushing rod, so that an adjusting block on the declined side is pushed to be close to the middle of the hanging beam, the hanging beam is automatically leveled, and if the hanging beam can be adjusted to the balance position at the moment, the step c is carried out; if the hanging beam cannot be balanced after being automatically leveled, performing the step d;
c. normally lifting, locking the support column, and lifting the whole lifting device by the crane to a specified position;
d. and d, balancing the lifting beam, putting down the whole lifting device by the crane, returning the regulating block and the leveling pushing block, regulating the installation position of the upper pulley according to the inclined state of the lifting beam during test lifting, and repeating the step b until the lifting beam is regulated to the balanced position.
The leveling operation of the hanging beam is convenient, when the stress phase difference of the left side and the right side of the hanging beam is larger, the balance degree of the hanging beam is roughly adjusted by adjusting the installation position of the upper pulley, and then the automatic leveling of the hanging beam is carried out. When the hanging beam is automatically leveled, the heavier side of the hanging beam is declined, and the leveling pushing block corresponding to the declined side is pushed by the pushing rod, so that the adjusting block on the declined side is pushed to be close to the middle of the hanging beam, and the hanging beam is automatically leveled. The leveling mode combining the two is used for leveling the hanging beam, so that the leveling operation of the hanging beam is more convenient, and the leveling effect is good.
Compared with the prior art, the invention has the beneficial effects that: (1) The lifting device can disperse stress and uniformly stress when lifting heavy objects, and can adjust stress positions according to different structures so as to meet the lifting requirements of different structures; and (2) the balance degree of the hanging beam is convenient to adjust, and the leveling effect is good.
Drawings
FIG. 1 is a schematic view of a construction of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
in the figure: 1. the lifting seat, 2, a lifting beam, 3, an upper pulley, 4, a lower pulley, 5, a lifting rope, 6, a pulley mounting hole, 7, a lifting hook, 8, a supporting leg, 9, a pin roll, 10, an adjusting groove, 11, an adjusting block, 12, a supporting column, 13, an oil cylinder, 14, a return spring, 15, an oil delivery pipe, 16, an electromagnetic valve, 17, a push rod, 18, a leveling push block, 19, a pushing surface, 20, a connecting rod, 21, a ratchet bar, 22, a pawl, 23, a positioning spring, 24, a deflector rod, 25, a roller, 26, an extension part, 27, a supporting block, 28, a chute, 29, a lifting head, 30 and a working platform.
Detailed Description
The technical scheme of the invention is further specifically described by the following specific embodiments with reference to the accompanying drawings:
examples: the utility model provides a hoisting apparatus of adjustable interval (see figure 1, figure 2), including lifting seat 1, install the hanging beam 2 on lifting seat, install a plurality of upper pulleys 3 on the hanging beam, a plurality of lower pulleys 4, lifting rope 5, be equipped with a plurality of pulley mounting holes 6 that are used for installing the upper pulleys along length direction on the hanging beam, upper pulleys and pulley mounting hole can dismantle the connection, pulley mounting hole quantity is more than upper pulley quantity, the lifting rope walks around all upper pulleys and lower pulleys, and the both ends of lifting rope are connected at the hanging beam both ends respectively, install lifting hook 7 on the lower pulley.
The upper pulley is a fixed pulley, and the lower pulley is a movable pulley. An upper pulley is arranged between two adjacent lower pulleys. The lower positions of the two ends of the hanging beam are respectively provided with supporting feet 8, and the two ends of the hanging beam can be supported on the supporting feet. The middle part of the hanging beam is provided with a pin shaft 9 which is rotatably connected to the lifting seat, two ends of the hanging beam are provided with adjusting grooves 10, adjusting blocks 11 which can move transversely are arranged in the adjusting grooves, and two ends of the hanging rope are respectively connected to the two adjusting blocks; lifting support columns 12 are arranged on two sides of the pin shaft on the lifting seat, and the lifting beam can be supported on the support columns. The upper pulleys on the left side and the right side of the hanging beam are symmetrically arranged. The hoist rope alternately bypasses the lower pulley and the upper pulley.
The lifting seat is correspondingly provided with an oil cylinder 13, the lower end of the support column is adaptively arranged in the oil cylinder, a return spring 14 is arranged in the oil cylinder and is abutted on the support column, the oil cylinder is communicated with an oil delivery pipe 15, and an electromagnetic valve 16 is arranged on the oil delivery pipe. An oil groove is arranged on the lifting seat, and the oil delivery pipe is communicated to the oil groove. Push rods 17 are arranged on two sides of the pin shaft on the lifting seat, leveling push blocks 18 capable of transversely moving are correspondingly arranged on the lifting beam and the push rods, pushing surfaces 19 which are obliquely arranged are arranged on the leveling push blocks, the upper ends of the push rods are attached to the pushing surfaces, and the two leveling push blocks are respectively connected with the two adjusting blocks. A connecting rod 20 is connected between the leveling push block and the adjusting block, a ratchet bar 21 is arranged on the connecting rod, a pawl 22 is arranged on the hanging beam, the end part of the pawl is adaptively inserted between two adjacent ratchet bars of the ratchet bar, and a positioning spring 23 is arranged between the leveling push block and the hanging beam. The pawl is connected with a deflector rod 24 for rotating the pawl. Pawl springs and abutting columns are respectively arranged on two sides of a pawl on the hanging beam, the pawl springs are abutted to the pawl, and the pawl is abutted to the abutting columns. The upper end of the pushing rod is provided with a roller 25 which is attached to the pushing surface. The lifting seat is provided with two extending parts 26 extending downwards, the extending parts are provided with supporting blocks 27, the supporting column and the pushing rod on one side of the pin shaft are arranged on one supporting block, and the supporting column and the pushing rod on the other side of the pin shaft are arranged on the other supporting block. The hanging beam and the leveling push block are correspondingly provided with a chute 28, the leveling push block is slidably connected with the chute, and the positioning spring is arranged in the chute. The upper end of the lifting seat is provided with a lifting head 29, the lifting seat is provided with a working platform 30, and the edge of the working platform is provided with a protective fence.
A lifting method of a lifting device with adjustable spacing uses the lifting device with adjustable spacing to lift and hoist a structure, comprising the following steps:
a. determining hoisting points, installing an upper pulley on a pulley installation hole at a proper position according to the shape of a structure, determining a plurality of hoisting points corresponding to the lifting hooks on the structure, and respectively connecting hoisting ropes between the lifting hooks and the hoisting points;
b. c, testing and hanging, wherein the crane is connected to a lifting seat to test and hang the whole lifting device, at the moment, the electromagnetic valve is opened, the oil delivery pipe can deliver oil, the support column can lift up and down, whether the lifting beam is balanced or not is observed, and if the lifting beam is balanced, the step C is carried out; if the hanging beam is unbalanced, the hanging beam automatically levels, the heavier side of the hanging beam is declined, and a leveling pushing block corresponding to the declined side is pushed by a pushing rod, so that an adjusting block on the declined side is pushed to be close to the middle of the hanging beam, the hanging beam is automatically leveled, and if the hanging beam can be adjusted to the balance position at the moment, the step c is carried out; if the hanging beam cannot be balanced after being automatically leveled, performing the step d;
c. normally lifting, closing an electromagnetic valve, blocking an oil delivery pipe, locking a support column, and lifting the whole lifting device by a crane to a specified position;
d. and d, balancing the lifting beam, putting down the whole lifting device by the crane, returning the regulating block and the leveling pushing block, regulating the installation position of the upper pulley according to the inclined state of the lifting beam during test lifting, and repeating the step b until the lifting beam is regulated to the balanced position.
When the structure is hoisted, a plurality of hoisting points corresponding to the lifting hooks are set on the structure, and hoisting ropes are respectively connected between the lifting hooks and the hoisting points. The upper pulleys form fixed pulleys, the lower pulleys form movable pulleys, a plurality of upper pulleys are arranged on the hanging beam, and the gravity of the structure is dispersed. The number of the pulley mounting holes arranged on the hanging beam is equal to the number of the upper pulleys, so that the mounting positions of the upper pulleys can be adjusted, and the hanging beam can be adjusted to the balance position when different structures are hoisted. The lifting device can disperse stress when lifting heavy objects, stress is uniform, stress positions can be adjusted according to different structures, and lifting requirements of different structures are met.
The above-described embodiments are merely preferred embodiments of the present invention, and the present invention is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (9)
1. The lifting device with the adjustable distance is characterized by comprising a lifting seat, a lifting beam arranged on the lifting seat, a plurality of upper pulleys, a plurality of lower pulleys and lifting ropes, wherein the plurality of upper pulleys, the plurality of lower pulleys and the lifting ropes are arranged on the lifting beam; the middle part of the hanging beam is provided with a pin roll which is rotationally connected to the lifting seat, two ends of the hanging beam are provided with adjusting grooves, adjusting blocks capable of transversely moving are arranged in the adjusting grooves, and two ends of the hanging rope are respectively connected to the two adjusting blocks; lifting support columns are mounted on two sides of the pin shaft on the lifting seat, and the lifting beam can be supported on the support columns.
2. The spacing-adjustable lifting device according to claim 1, wherein supporting feet are arranged below two ends of the lifting beam, and the two ends of the lifting beam can be supported on the supporting feet.
3. The distance-adjustable lifting device according to claim 1, wherein the lifting seat is provided with an oil cylinder corresponding to the support column, the lower end of the support column is adaptively arranged in the oil cylinder, a return spring is arranged in the oil cylinder and is abutted against the support column, the oil cylinder is communicated with an oil delivery pipe, and an electromagnetic valve is arranged on the oil delivery pipe.
4. The distance-adjustable lifting device according to claim 1, wherein pushing rods are mounted on two sides of a pin shaft on the lifting seat, leveling pushing blocks capable of transversely moving are correspondingly arranged on the lifting beam and the pushing rods, pushing surfaces which are obliquely arranged are arranged on the leveling pushing blocks, the upper ends of the pushing rods are attached to the pushing surfaces, and the two leveling pushing blocks are respectively connected with the two adjusting blocks.
5. The distance-adjustable lifting device according to claim 4, wherein a connecting rod is connected between the leveling push block and the adjusting block, a ratchet bar is arranged on the connecting rod, a pawl is arranged on the lifting beam, the end part of the pawl is adaptively inserted between two adjacent ratchet bars of the ratchet bar, and a positioning spring is arranged between the leveling push block and the lifting beam.
6. The adjustable spacing lifting device of claim 5 wherein the pawl is connected to a lever for rotating the pawl.
7. The adjustable distance jack of claim 4, wherein rollers are mounted on the upper ends of the pushing rods and are attached to the pushing surface.
8. The adjustable spacing lifting device of claim 4, wherein the lifting base is provided with two downwardly extending extensions, the extensions are provided with support blocks, the support column and the ejector rod on one side of the pin shaft are mounted on one support block, and the support column and the ejector rod on the other side of the pin shaft are mounted on the other support block.
9. A method of lifting a structure using the pitch-adjustable lifting device of any one of claims 4 to 8, comprising the steps of:
a. determining hoisting points, installing an upper pulley on a pulley installation hole at a proper position according to the shape of a structure, determining a plurality of hoisting points corresponding to the lifting hooks on the structure, and respectively connecting hoisting ropes between the lifting hooks and the hoisting points;
b. c, testing and hanging, wherein the crane is connected to the lifting seat to test and hang the whole lifting device, at the moment, the support column can be lifted up and down, whether the lifting beam is balanced or not is observed, and if the lifting beam is balanced, the step C is carried out; if the hanging beam is unbalanced, the hanging beam automatically levels, the heavier side of the hanging beam is declined, and a leveling pushing block corresponding to the declined side is pushed by a pushing rod, so that an adjusting block on the declined side is pushed to be close to the middle of the hanging beam, the hanging beam is automatically leveled, and if the hanging beam can be adjusted to the balance position at the moment, the step c is carried out; if the hanging beam cannot be balanced after being automatically leveled, performing the step d;
c. normally lifting, locking the support column, and lifting the whole lifting device by the crane to a specified position;
d. and d, balancing the lifting beam, putting down the whole lifting device by the crane, returning the regulating block and the leveling pushing block, regulating the installation position of the upper pulley according to the inclined state of the lifting beam during test lifting, and repeating the step b until the lifting beam is regulated to the balanced position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110881675.1A CN113651230B (en) | 2021-08-02 | 2021-08-02 | Interval-adjustable lifting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110881675.1A CN113651230B (en) | 2021-08-02 | 2021-08-02 | Interval-adjustable lifting device and method |
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| Publication Number | Publication Date |
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| CN113651230A CN113651230A (en) | 2021-11-16 |
| CN113651230B true CN113651230B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110881675.1A Active CN113651230B (en) | 2021-08-02 | 2021-08-02 | Interval-adjustable lifting device and method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114229680B (en) * | 2022-02-28 | 2022-07-29 | 河南蒲豫建设工程有限公司 | Crane for hoisting house building stone |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1453986A (en) * | 1974-05-30 | 1976-10-27 | Nippon Kokan Kk | Block loader |
| KR20150039941A (en) * | 2013-10-04 | 2015-04-14 | 삼성중공업 주식회사 | Heavy object lifting device |
| CN205802762U (en) * | 2016-07-18 | 2016-12-14 | 中国建筑第五工程局有限公司深圳分公司 | A kind of movable truss hoisting of scalable lifting spacing |
| CN108116973A (en) * | 2018-01-26 | 2018-06-05 | 上海广大基础工程有限公司 | A kind of adjustable self-balancing hanging apparatus |
| CN208532011U (en) * | 2018-06-23 | 2019-02-22 | 上海住信住宅工业有限公司 | A kind of Prefabricated element slings |
-
2021
- 2021-08-02 CN CN202110881675.1A patent/CN113651230B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1453986A (en) * | 1974-05-30 | 1976-10-27 | Nippon Kokan Kk | Block loader |
| KR20150039941A (en) * | 2013-10-04 | 2015-04-14 | 삼성중공업 주식회사 | Heavy object lifting device |
| CN205802762U (en) * | 2016-07-18 | 2016-12-14 | 中国建筑第五工程局有限公司深圳分公司 | A kind of movable truss hoisting of scalable lifting spacing |
| CN108116973A (en) * | 2018-01-26 | 2018-06-05 | 上海广大基础工程有限公司 | A kind of adjustable self-balancing hanging apparatus |
| CN208532011U (en) * | 2018-06-23 | 2019-02-22 | 上海住信住宅工业有限公司 | A kind of Prefabricated element slings |
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| CN113651230A (en) | 2021-11-16 |
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