CN108263973B - Support hoisting mechanism and hoisting system - Google Patents
Support hoisting mechanism and hoisting system Download PDFInfo
- Publication number
- CN108263973B CN108263973B CN201810263450.8A CN201810263450A CN108263973B CN 108263973 B CN108263973 B CN 108263973B CN 201810263450 A CN201810263450 A CN 201810263450A CN 108263973 B CN108263973 B CN 108263973B
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- China
- Prior art keywords
- chest expander
- cross arm
- connector
- hoisting
- bracket
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
- B66C23/203—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided by posts, e.g. scaffolding, trees or masts
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
- B66C23/208—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided from the side, e.g. by walls of buildings
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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
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a bracket hoisting mechanism and a hoisting system, and belongs to the technical field of building machinery. The hoisting assembly comprises a connecting member, a chain block, a supporting member and a chest expander; the I-shaped steel beam is movably arranged on the upright post; the support member is movably arranged on the upright post through the connecting member, the chain block is arranged on one side of the upright post, the chain block is in transmission connection with the support member, and the chain block can drive the support member to move along the length direction of the upright post; the chest expander is installed on the support component, and chest expander is connected with I-steel beam transmission, and chest expander can pull the I-steel beam to the support component. The hoisting system can effectively control the falling speed and the space height of the rod piece, and achieves the purpose of meeting the space provision of the normal operation of a crane.
Description
Technical Field
The invention relates to the technical field of building machinery, in particular to a bracket hoisting mechanism and a hoisting system.
Background
In the current urban interchange, highway and railway cast-in-situ concrete beam and steel box beam splicing construction, the design mode of adding an I-shaped steel beam bracket at the top of a steel pipe column is increasingly widely applied, but the splicing is easy, the situation that the bracket is detached is always found to be unprofitable is avoided, because the distance between the bottom of the concrete beam and the top of the I-shaped steel beam is always not more than 30cm (about 15-20cm of templates, liang Fangmu and the like, and the unloading amount of a sand cylinder is 10 cm) after the concrete beam is cast-in-situ or the steel beam is spliced. The crane cannot be hooked in such a narrow height space, the bearing steel beam can drop and smash out when being forcibly pulled, and the crane and other facilities at the lower part are injured, and shaking and tilting impact even serious casualties occur. It is not desirable to use the crane directly, simply because the construction and configuration of the upper part limits further extension of the crane boom.
Some people in the building market design a modified lifting and unloading crane according to a wood lifting method, but the distance between some supports is narrow, and the crane cannot enter an operation area and is also ineffectively; the method is of course best, but many steel box girders are not allowed to be left with holes, so that temporary hooks are welded at the bottoms of the steel box girders, and steel ropes or chain blocks are used for lowering, but the method sometimes cannot be allowed by owners and proctor parties, and is considered to be harmful to the steel girders.
Disclosure of Invention
The invention provides a bracket hoisting mechanism and a hoisting system, and aims to solve the problems of the bracket hoisting mechanism in the prior art.
The embodiment of the invention is realized as follows:
the bracket hoisting mechanism comprises a stand column, a hoisting assembly and an I-shaped steel beam, wherein the hoisting assembly comprises a connecting member, a chain block, a supporting member and a chest expander;
the I-shaped steel beam is movably arranged on the upright post;
the support member is movably arranged on the upright post through the connecting member, the chain block is arranged on one side of the upright post, the chain block is in transmission connection with the support member, and the chain block can drive the support member to move along the length direction of the upright post;
the chest expander is arranged on the supporting member, the chest expander is in transmission connection with the I-shaped steel beam, and the chest expander can pull the I-shaped steel beam to the supporting member.
As a preferable technical scheme of the invention, the supporting member comprises a buttress connecting rod, a platform cross arm and an inclined strut, wherein the buttress connecting rod is attached to the upright in parallel, one end of the platform cross arm is connected with the buttress connecting rod, the chest expander is arranged on the platform cross arm, and two ends of the inclined strut are respectively connected with the platform cross arm and the buttress connecting rod in an angle way.
As a preferable technical scheme of the invention, the connecting member comprises a first connector and a second connector, wherein the first connector and the second connector are installed on the upright at intervals, the first connector is close to the i-beam, one end of the first connector is connected with the buttress connecting rod, and two ends of the second connector are respectively connected with the buttress connecting rod and the chain block.
As a preferable technical scheme of the invention, the first connector comprises a first cross arm anchor plate and a first anchor hoop, the first anchor hoop is connected with the first cross arm anchor plate, and the first anchor hoop is sleeved on the upright post.
As a preferable technical scheme of the invention, the second connector comprises a second cross arm anchor plate and a second anchor hoop, the second anchor hoop is connected with the second cross arm anchor plate, and the second anchor hoop is sleeved on the upright post.
As a preferable embodiment of the present invention, the longitudinal direction of the first cross arm is perpendicular to the longitudinal direction of the upright, and the longitudinal direction of the second cross arm is perpendicular to the longitudinal direction of the upright.
As a preferable technical scheme of the invention, the second connector comprises a hanging ring, the hanging ring is arranged on the second hoop, and one end of the chain block is connected with the hanging ring.
As a preferable technical scheme of the invention, the chest expander comprises a chest expander hook, a hand-operated tension body and a tension rope, wherein the chest expander hook and the hand-operated tension body are arranged on the platform cross arm at intervals, the tension rope is arranged on the hand-operated tension body, and two ends of the tension rope are respectively connected with the chest expander hook and the I-shaped steel beam.
As a preferable technical scheme of the invention, the chest expander further comprises a safety stop, and the safety stop is connected with the chest expander hook.
A lifting system comprising the bracket lifting mechanism described above. The beneficial effects of the invention are as follows:
the invention provides a bracket hoisting mechanism, which is mainly used for an auxiliary device of a top platform of a cast-in-situ or assembled field bracket when a main heavy rod piece is unloaded; the hoisting assembly comprises a connecting member, a chain block, a supporting member and a chest expander; during installation, the hoisting assembly is close to the top of the stand column, hoop steel bars are penetrated, the chain is hung, the chain is pulled, the hanging ring welded on the back of the hoop is slightly tensioned and stressed, the I-steel beam is pulled in parallel by the chest expander, horizontally slides to the hoisting assembly and leaves the top of the stand column, the hoisting assembly is likely to sink slightly at the moment, a small amount of dislocation belongs to a normal phenomenon with the top of the stand column, bolts on the hoop are slightly loosened, the chain is further tensioned at the moment, the chain is pulled again, the chain is slowly lowered, and the hoisting assembly and the I-steel beam are synchronously lowered together until the crane operation space is met. After the I-steel beam is lifted off, the chain block and the anchor ear are disassembled, and the hoisting assembly is taken down to lower the next I-steel beam. Therefore, the support hoisting mechanism can effectively control the falling speed and the space height of the rod piece, and space provision meeting the normal operation of a crane is achieved; the risk method for cutting the top steel pipe during conventional unloading is avoided, the damage of scrapping the I-beam, crushing the ground surface pavement, the steel pipe stand column foot and the like caused by directly pushing the I-beam by brute force is avoided, and the terrorist impact noise of a construction site is reduced; furthermore, the crane construction safety can be ensured, and the risk of damage to the large arm of the crane and even safety accidents caused by tilting, shaking and impacting of the component due to conventional adventure hoisting operation is avoided.
The lifting system obtained through the design has the advantages of simple structure and convenient use due to the bracket lifting mechanism.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a hoisting system provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a bracket hoisting mechanism provided in an embodiment of the present invention;
fig. 3 is a schematic structural view of a first angle of a bracket hoisting mechanism provided in an embodiment of the present invention;
fig. 4 is an enlarged schematic view of a partial structure of a connection member provided in an embodiment of the present invention.
Icon: 1-a bracket hoisting mechanism; 2-stand columns; 3-hoisting the assembly; 4-I-shaped steel beams; a 5-connecting member; 6-chain pouring; 7-a support member; 8-a chest expander; 9-a buttress connecting rod; 10-a platform cross arm; 11-diagonal braces; 12-a first connector; 13-a second connector; 14-a first cross arm anchor plate; 15-a first hoop; 16-a second cross arm anchor plate; 17-a second hoop; 18-hanging rings.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, it should be understood that terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, rather than indicating or implying that the elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
Examples:
the embodiment provides a hoisting system, which comprises a bracket hoisting mechanism 1.
Referring to fig. 1 to 4, a bracket hoisting mechanism 1 comprises a column 2, a hoisting assembly 3 and an i-beam 4, wherein the hoisting assembly 3 comprises a connecting member 5, a chain block 6, a supporting member 7 and a chest expander 8; the I-shaped steel beam 4 is movably arranged on the upright post 2; the support member 7 is movably arranged on the upright post 2 through a connecting member, the chain block 6 is arranged on one side of the upright post 2, the chain block 6 is in transmission connection with the support member 7, and the chain block 6 can drive the support member 7 to move along the length direction of the upright post 2; the chest expander 8 is mounted on the support member 7, the chest expander 8 is in driving connection with the I-beam 4, and the chest expander 8 can pull the I-beam 4 onto the support member 7.
Further, in this embodiment, the supporting member 7 includes a buttress connecting rod 9, a platform cross arm 10 and an inclined strut 11, the buttress connecting rod 9 is attached to the upright 2 in parallel, one end of the platform cross arm 10 is connected with the buttress connecting rod 9, the tensioner 8 is mounted on the platform cross arm 10, and two ends of the inclined strut 11 are respectively connected with the platform cross arm 10 and the buttress connecting rod 9 in an angle.
Further, in this embodiment, the connecting member 5 includes a first connector 12 and a second connector 13, the first connector 12 and the second connector 13 are installed on the upright 2 at intervals, the first connector 12 is close to the i-beam 4, one end of the first connector 12 is connected with the buttress connecting rod 9, and two ends of the second connector 13 are connected with the buttress connecting rod 9 and the chain block 6 respectively.
Further, in the present embodiment, the first connector 12 includes a first cross arm anchor plate 14 and a first anchor ear 15, the first anchor ear 15 is connected to the first cross arm anchor plate 14, and the first anchor ear 15 is sleeved on the upright 2.
Further, in this embodiment, the second connector 13 includes a second cross arm anchor plate 16 and a second anchor ear 17, the second anchor ear 17 is connected to the second cross arm anchor plate 16, and the second anchor ear 17 is sleeved on the upright 2.
Therefore, when the chain is pulled and the chain is hung, the chain can drive the hoisting assembly 3 and the I-shaped steel beam 4 to be synchronously lowered until meeting the requirement of the crane operation space.
In the present embodiment, the longitudinal direction of the first cross arm is perpendicular to the longitudinal direction of the upright 2, and the longitudinal direction of the second cross arm is perpendicular to the longitudinal direction of the upright 2.
In this embodiment, the second connector 13 includes a hanging ring 18, the hanging ring 18 is mounted on the second hoop 17, and one end of the chain hoist 6 is connected to the hanging ring 18.
Further, in this embodiment, the chest expander 8 includes chest expander 8 couple, hand pulling force body and pulling force rope, and chest expander 8 couple, hand pulling force body are installed on platform cross arm 10 with the interval, and the pulling force rope is installed on hand pulling force body, and the both ends of pulling force rope are connected with chest expander 8 couple, I-steel girder 4 respectively.
Thus, when the chest expander 8 is activated, it pulls the i-beam 4 from the column 2 onto the platform cross arm 10 and is lowered with the hoist assembly 3 into position to meet the crane operating space.
Further, in this embodiment, the chest expander 8 further includes a safety block, and the safety block is hooked with the chest expander 8.
It should be noted that, before the hoisting system is operated, the preparation work that needs to be done includes: the lattice and the buttress connecting rod 9 pieces within 2 meters of the pier top are cut off, so that the hoisting assembly 3 can slide down smoothly within the range from the top of the upright post 2 to 2 meters. The top of the upright post 2 spliced by the flange does not have the condition of direct sliding down, and the flange can be welded on the periphery after being grooved by the channel steel with the length of 2 meters and the number of 6 along the four directions of the periphery of the upright post 2 to cross the flange part, so that the anchor ear and the buttress connecting piece can slide smoothly. Still prepare in advance, cut the opening with the position department cutting of the hoist and mount subassembly 3 of 2 top tray steel sheet installation hoist and mount subassembly 3, the back welding No. 12 round bar rings 18 of hoist and mount subassembly 3 to be used for hanging chain block 6, also welded the pull ring in the bottom suitable position that hoist and mount subassembly 3 corresponds, make things convenient for the pulling of connecting element 5.
The working process of the hoisting system is realized as follows:
during installation, the hoisting assembly 3 is close to the top of the upright post 2, hoop steel bars are penetrated, the chain is pulled, the hanging ring 18 welded on the back of the hoop is slightly tensioned and stressed by the chain, the I-steel beam 4 is pulled in parallel by the connecting component 5, horizontally slides onto the hoisting assembly 3, the hoisting assembly 3 is separated from the top of the upright post 2, the hoisting assembly 3 is likely to slightly sink at the moment, a small amount of dislocation phenomenon is caused to be normal with the top of the upright post 2, the bolts on the hoop are slightly loosened, the chain is further tightened at the moment, and the chain is pulled, so that the chain is slowly lowered, and the hoisting assembly 3 and the I-steel beam 4 are synchronously lowered together until the crane operation space is met. After the I-steel beam 4 is lifted off, the chain block 6 and the anchor ear are disassembled, and the hoisting assembly 3 is taken down to lower the next I-steel.
In summary, the lifting system obtained through the design has the bracket lifting mechanism 1, so that the lifting system is simple in structure and convenient to use. The bracket hoisting mechanism 1 is mainly used for auxiliary devices of a top platform of a cast-in-situ or assembled field bracket mainly used for heavy rod pieces during unloading; the hoisting assembly 3 comprises a connecting member 5, a chain block 6, a supporting member 7 and a chest expander 8; during installation, the hoisting assembly 3 is close to the top of the upright post 2, hoop steel bars are penetrated, the chain is pulled, the hanging ring 18 welded on the back of the hoop is slightly tensioned and stressed by the chain, the I-steel beam 4 is pulled in parallel by the chest expander 8 and horizontally slides onto the hoisting assembly 3, the hoisting assembly 3 is separated from the top of the upright post 2, the hoisting assembly 3 is likely to slightly sink at the moment, a small amount of dislocation phenomenon is caused to be normal with the top of the upright post 2, the bolts on the hoop are slightly loosened, the chain is further tightened at the moment, the chain is pulled, the chain is slowly lowered, and the hoisting assembly 3 and the I-steel beam 4 are synchronously lowered together until the crane operation space is met. After the I-steel beam 4 is lifted off, the chain block 6 and the anchor ear are disassembled, and the hoisting assembly 3 is taken down to lower the next I-steel. Therefore, the support hoisting mechanism 1 can effectively control the falling speed and the space height of the rod piece, and space provision meeting the normal operation of a crane is achieved; the risk method for cutting the top steel pipe during conventional unloading is avoided, the damage of scrapping the I-beam 4, crushing the ground surface pavement, the steel pipe column 2 feet and the like caused by directly pushing the I-beam 4 by brute force is avoided, and the terrorist impact noise of a construction site is reduced; furthermore, the crane construction safety can be ensured, and the risk of damage to the large arm of the crane and even safety accidents caused by tilting, shaking and impacting of the component due to the conventional adventure hoisting operation is avoided.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The bracket hoisting mechanism is characterized by comprising an upright post, a hoisting assembly and an I-shaped steel beam, wherein the hoisting assembly comprises a connecting member, a chain block, a supporting member and a chest expander;
the I-shaped steel beam is movably arranged on the upright post;
the support member is movably arranged on the upright post through the connecting member, the chain block is arranged on one side of the upright post, the chain block is in transmission connection with the support member, and the chain block can drive the support member to move along the length direction of the upright post;
the chest expander is arranged on the supporting member, the chest expander is in transmission connection with the I-shaped steel beam, and the chest expander can pull the I-shaped steel beam to the supporting member.
2. The bracket hoisting mechanism according to claim 1, wherein the supporting member comprises a buttress connecting rod, a platform cross arm and an inclined strut, the buttress connecting rod is attached to the upright in parallel, one end of the platform cross arm is connected with the buttress connecting rod, the chest expander is mounted on the platform cross arm, and two ends of the inclined strut are respectively connected with the platform cross arm and the buttress connecting rod in an angle.
3. The bracket lifting mechanism of claim 2 wherein the connecting member comprises a first connector and a second connector, the first connector and the second connector are mounted on the upright at intervals, the first connector is adjacent to the i-beam, one end of the first connector is connected with the buttress connecting rod, and two ends of the second connector are connected with the buttress connecting rod and the chain block respectively.
4. The bracket lifting mechanism of claim 3, wherein the first connector comprises a first cross arm anchor plate and a first anchor ear, the first anchor ear is connected to the first cross arm anchor plate, and the first anchor ear is sleeved on the upright.
5. The bracket lifting mechanism of claim 4, wherein the second connector comprises a second cross arm anchor plate and a second anchor ear, the second anchor ear is connected to the second cross arm anchor plate, and the second anchor ear is sleeved on the upright.
6. The bracket lifting mechanism of claim 5, wherein the length direction of the first cross arm is perpendicular to the length direction of the upright, and the length direction of the second cross arm is perpendicular to the length direction of the upright.
7. The bracket lifting mechanism of claim 6, wherein the second connector comprises a lifting ring mounted on the second hoop, and wherein one end of the chain is connected to the lifting ring.
8. The bracket hoisting mechanism of claim 2, wherein the chest expander comprises a chest expander hook, a hand-operated tension body and a tension rope, the chest expander hook and the hand-operated tension body are installed on the platform cross arm at intervals, the tension rope is installed on the hand-operated tension body, and two ends of the tension rope are respectively connected with the chest expander hook and the I-shaped steel beam.
9. The stand lifting mechanism of claim 8, wherein the chest expander further comprises a safety stop, the safety stop being coupled to the chest expander hook.
10. A hoisting system, characterized in that it comprises a bracket hoisting mechanism according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263450.8A CN108263973B (en) | 2018-03-27 | 2018-03-27 | Support hoisting mechanism and hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263450.8A CN108263973B (en) | 2018-03-27 | 2018-03-27 | Support hoisting mechanism and hoisting system |
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| Publication Number | Publication Date |
|---|---|
| CN108263973A CN108263973A (en) | 2018-07-10 |
| CN108263973B true CN108263973B (en) | 2023-09-05 |
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|---|---|---|---|
| CN201810263450.8A Active CN108263973B (en) | 2018-03-27 | 2018-03-27 | Support hoisting mechanism and hoisting system |
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| Publication number | Publication date |
|---|---|
| CN108263973A (en) | 2018-07-10 |
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