CN109179253A - A kind of building tower crane safety climbing ladder - Google Patents
A kind of building tower crane safety climbing ladder Download PDFInfo
- Publication number
- CN109179253A CN109179253A CN201810808378.2A CN201810808378A CN109179253A CN 109179253 A CN109179253 A CN 109179253A CN 201810808378 A CN201810808378 A CN 201810808378A CN 109179253 A CN109179253 A CN 109179253A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- wall
- tower crane
- climbing ladder
- building tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
- B66F7/0666—Multiple scissor linkages vertically arranged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a kind of building tower crane safety climbing ladders, belong to lifting device field, its key points of the technical solution are that, including body, connecting pin and gravity block, the inside of body, which is run through, is connected with gravity block, the center of body is arranged in gravity block, and there are four bending claws through connection for the outer wall surrounding of body, and the lower end of bending claws has been bolted to connection rubber feet.The stability of lifting device can be effectively raised, it solves the problems, such as to need to move repeatedly lifting device and meet multidirectional transport architectural workpieces, effectively raise the convenience that lifting device uses, it solves the problems, such as that body is easy to happen to slide axially, effectively raise the quality of lifting, it is capable of increasing the frictional force of architectural workpieces placement, solve the problems, such as that architectural workpieces are easy sliding, effectively raise the stability for bearing workpiece, it avoids placement plate and is easy the problem of falling and causing safety accident, effectively raise the safety of lifting device.
Description
Technical field
The present invention relates to medical field, in particular to a kind of building tower crane safety climbing ladder.
Background technique
Building tower crane safety climbing ladder is the device that a kind of pair of architectural workpieces are gone up and down in the vertical direction, passes through lifting shaft
Bar lifting, can reach and transport architectural workpieces in the vertical direction, to effectively reduce the trouble of manual handling, but rise
The stability of falling unit is poor, needs to move repeatedly lifting device, and the stability for bearing workpiece is poor, and placement plate is easy to fall and cause
Safety accident.
A kind of current building lifting device, but the stability of lifting device is poor, including loading plate, loading plate upper surface
It is machined with one group of No.1 circular groove, the upward hydraulic cylinder of telescopic end is equipped in one group of No.1 circular groove on lower surface, makes
It is time saving and energy saving to use, and does not need waste of manpower, is gone up and down automatically, can also increase the height of rising, in insufficient height
When, the insufficient disadvantage of height can also be made up, working efficiency is improved, but need to move repeatedly lifting device, bear workpiece
Stability it is poor, placement plate is easy to fall and cause safety accident.
Summary of the invention
In view of the deficienciess of the prior art, being solved the object of the present invention is to provide a kind of building tower crane safety climbing ladder
Lifting device is easy to happen the problem of displacement, effectively raises the stability of lifting device, solves needs and moves repeatedly liter
Falling unit and the problem of meet multidirectional transport architectural workpieces, effectively raise the convenience that lifting device uses, solve machine
Body is easy to happen the problem of sliding axially, and effectively raises the quality of lifting, is capable of increasing the frictional force of architectural workpieces placement,
It solves the problems, such as that architectural workpieces are easy sliding, effectively raises the stability for bearing workpiece, avoid placement plate and be easy
The problem of falling and causing safety accident effectively raises the safety of lifting device.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of building tower crane is climbed safely
Ladder, including body, connecting pin and gravity block, the inside of the body are arranged through gravity block, the gravity block is connected in machine
The center of body, there are four bending claws through connection for the outer wall surrounding of the body, and the lower end of the bending claws is bolted
It is connected with rubber feet, runs through in the middle part of the upper wall of the body and is connected with lifting shaft rod, the upper end activity of the lifting shaft rod connects
It is connected to load-bearing pillar, the upper end of the load-bearing pillar is fixedly connected with connecting pin, and the external wall of upper portion of the connecting pin is fixedly connected with work
Make platform, the inside of the workbench is through revoling tube is connected with, and the inner wall of the revoling tube is fixedly connected with snap groove, institute
The inside for stating snap groove, which is connected together, rotary chuck, and the outer diameter of the rotary chuck is less than the internal diameter of revoling tube.
Further, the rotary chuck is fixedly connected with placement plate far from the side of revoling tube, and the placement plate is remote
Side from rotary chuck is fixedly connected with friction pad.
Further, the top of the workbench is fixedly connected with protective jacket frame, and the size of the protective jacket frame is greater than
The size of placement plate, and the middle part of protective jacket frame is protruded into the lower end of the revoling tube.
Further, cross bar, and the external wall of upper portion and rotation of the cross bar are fixedly connected in the middle part of the protective jacket frame
The lower part outer wall of casing is fixedly connected.
Further, the external wall of upper portion of the workbench is fixedly connected with protective fence, and the protective fence is frame structure,
It is fixedly connected with hydraulic cylinder in the middle part of the inner wall of the body, and the upper end of the hydraulic cylinder is connected to lifting shaft rod.
Further, the external wall of upper portion of the body is fixedly connected with two groups of active pull rods, and two groups of active pull rods
It is laid in intersecting, and the upper end of two groups of active pull rods is fixedly connected with the lower part outer wall of workbench.
Further, the lower part outer wall of the body is flexibly connected there are four rotating wheel, and the bottom of the rotating wheel with
At the bottom of rubber feet in the same horizontal line.
Further, the outer wall of the active pull rod is through being connected with multiple positioning bolts, and the positioning bolt along
Active pull rod is equidistantly laid.
In conclusion the invention has the following advantages:
1, this kind of building tower crane safety climbing ladder is arranged through gravity block, gravity block is connected in body in the inside of body
Center, the self weight of body can be increased by gravity block so that body can be stablized in lifting process, solution
The problem of lifting device of having determined is easy to happen displacement effectively raises the stability of lifting device.
2, this kind of building tower crane safety climbing ladder, being connected together in the inside of snap groove has rotary chuck, outside rotary chuck
Diameter is less than the internal diameter of revoling tube, and rotary chuck cross section is in " I-shaped " structure, by the rotation for being in " I-shaped " structure
Chuck engages with snap groove, and rotary chuck is enabled to rotate in revoling tube, so that being fixed on rotary chuck
Placement plate is able to carry out multi-angle rotary, solves and needs to move repeatedly lifting device and meet asking for multidirectional transport architectural workpieces
Topic, effectively raises the convenience that lifting device uses.
3, this kind of building tower crane safety climbing ladder has been bolted to connection rubber feet in the lower end of bending claws, has passed through rubber
Rubber mat foot is capable of increasing the contact area on body and ground, so as to achieve the effect that unload power, avoids body load excessive
And the problem of causing deformation, and the surrounding of body is arranged in four rubber feets, solves body and is easy to happen and slides axially
The problem of, effectively raise the quality of lifting.
4, this kind of building tower crane safety climbing ladder is fixedly connected with friction pad far from the side of rotary chuck in placement plate, leads to
It crosses friction pad and is directly contacted with architectural workpieces, be capable of increasing the frictional force of architectural workpieces placement, solve architectural workpieces and be easy to slide
Dynamic problem effectively raises the stability for bearing workpiece.
5, this kind of building tower crane safety climbing ladder, is fixedly connected with protective jacket frame at the upper part of the worktable, and protective jacket frame
Size is greater than the size of placement plate, and the underface of placement plate is arranged in by protective jacket frame, when rotary chuck is dislocated, energy
It is enough supported placement plate, is easy the problem of falling and causing safety accident, effectively to mention to effectively avoid placement plate
The high safety of lifting device.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention；
Fig. 2 is active pull rod expanded view of the invention；
Fig. 3 is revoling tube structure chart of the invention；
Fig. 4 is Working table structure figure of the invention.
In figure, 1, body；101, bending claws；102, rubber feet；103, gravity block；104, rotating wheel；105, active pull rod；
106, positioning bolt；107, load-bearing pillar；108, hydraulic cylinder；109, lifting shaft rod；2, connecting pin；201, workbench；202, prevent
Guardrail；203, protective jacket frame；204, cross bar；3, revoling tube；301, snap groove；302, rotary chuck；303, placement plate；304,
Friction pad.Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of building tower crane safety climbing ladder, including body 1, company
End 2 and gravity block 103 are connect, through gravity block 103 is connected with, the centre bit of body 1 is arranged in gravity block 103 for the inside of body 1
It sets, the self weight of body can be increased by gravity block 103, so that body can be stablized in lifting process, solve liter
Falling unit is easy to happen the problem of displacement, effectively raises the stability of lifting device, the outer wall surrounding of body 1 is through connection
There are four bending claws 101, the lower end of bending claws 101 has been bolted to connection rubber feet 102, can by rubber feet 102
The contact area for increasing body 1 and ground avoids 1 load excessive of body and causes to become so as to achieve the effect that unload power
The problem of shape, and the surrounding of body 1 is arranged in four rubber feets 102, solves body 1 and is easy to happen and asks in axial sliding
Topic effectively raises the quality of lifting, runs through in the middle part of the upper wall of body 1 and be connected with lifting shaft rod 109, lifting shaft rod 109
Upper end is fixedly connected with connecting pin 2, and the external wall of upper portion of connecting pin 2 is fixedly connected with workbench 201, and the inside of workbench 201 is passed through
It wears and is connected with revoling tube 3, the inner wall of revoling tube 3 is fixedly connected with snap groove 301, and the inside of snap groove 301 is connected together
There is rotary chuck 302, the outer diameter of rotary chuck 302 is less than the internal diameter of revoling tube 3, and 302 cross section of rotary chuck is in " I-shaped
Shape " structure enables to rotary chuck 302 to exist by engaging in the rotary chuck 302 of " I-shaped " structure with snap groove 301
It rotates in revoling tube 3, so that the placement plate 303 being fixed on rotary chuck 302 is able to carry out multi-angle rotary, solves
The problem of moving repeatedly lifting device and meeting multidirectional transport architectural workpieces is needed, effectively raises what lifting device used
Convenience.
In embodiment, rotary chuck 302 is fixedly connected with placement plate 303, placement plate far from the side of revoling tube 3
303 sides far from rotary chuck 302 are fixedly connected with friction pad 304, are directly contacted by friction pad 304 with architectural workpieces, energy
Enough increase the frictional force that architectural workpieces are placed, solves the problems, such as that architectural workpieces are easy sliding, effectively raise and bear workpiece
Stability.
In embodiment, rotary chuck 302 is fixedly connected with placement plate 303, placement plate far from the side of revoling tube 3
303 sides far from rotary chuck 302 are fixedly connected with friction pad 304, are directly contacted by friction pad 304 with architectural workpieces, energy
Enough increase the frictional force that architectural workpieces are placed, solves the problems, such as that architectural workpieces are easy sliding, effectively raise and bear workpiece
Stability.The top of workbench 201 is fixedly connected with protective jacket frame 203, and the size of protective jacket frame 203 is greater than placement plate
303 size, and the middle part of protective jacket frame 203 is protruded into the lower end of revoling tube 3, is being placed by the setting of protective jacket frame 203
The underface of plate is able to carry out support placement plate 303, when rotary chuck 302 is dislocated so as to avoid placement plate 303
It is easy the problem of falling and causing safety accident, effectively raises the safety of lifting device.
In embodiment, rotary chuck 302 is fixedly connected with placement plate 303, placement plate far from the side of revoling tube 3
303 sides far from rotary chuck 302 are fixedly connected with friction pad 304, are directly contacted by friction pad 304 with architectural workpieces, energy
Enough increase the frictional force that architectural workpieces are placed, solves the problems, such as that architectural workpieces are easy sliding, effectively raise and bear workpiece
Stability.The top of workbench 201 is fixedly connected with protective jacket frame 203, and the size of protective jacket frame 203 is greater than placement plate
303 size, and the middle part of protective jacket frame 203 is protruded into the lower end of revoling tube 3, is being placed by the setting of protective jacket frame 203
The underface of plate is able to carry out support placement plate 303, when rotary chuck 302 is dislocated so as to avoid placement plate 303
It is easy the problem of falling and causing safety accident, effectively raises the safety of lifting device.The middle part of protective jacket frame 203 is solid
Surely it is connected with cross bar 204, and the external wall of upper portion of cross bar 204 is fixedly connected with the lower part outer wall of revoling tube 3, passes through cross bar 204
It fixes, revoling tube 3 can be supported with the bottom of revoling tube 3, so that revoling tube 3 be avoided to shift.
In embodiment, the external wall of upper portion of workbench 201 is fixedly connected with protective fence 202, and protective fence 202 is frame knot
The inner wall middle part of structure, body 1 is fixedly connected with hydraulic cylinder 108, and the upper end of hydraulic cylinder 108 is connected to lifting shaft rod 109,
Be able to carry out protective construction workpiece by protective fence 202 so that prevent architectural workpieces from sliding, and by hydraulic cylinder 108 with
Lifting shaft rod 109 is connected to, so that carrying out elevating control to lifting shaft rod 109, changes the vertical height of lifting device to reach
Effect.The external wall of upper portion of body 1 is fixedly connected with two groups of active pull rods 105, and two groups of active pull rods 105 are laid in intersection, and
And the upper end of two groups of active pull rods 105 is fixedly connected with the lower part outer wall of workbench 2, is supported work by active pull rod 105
Make platform 2, to avoid lifting shaft rod 109 that rigid damage occurs.
In embodiment, the lower part outer wall of body 1 is flexibly connected there are four rotating wheel 104, and the bottom of rotating wheel 104 with
At the bottom of rubber feet 102 in the same horizontal line, mobile body 1 is able to carry out by rotating wheel 104, so as to reach
The convenient effect for carrying lifting device.The outer wall of active pull rod 105, which runs through, is connected with multiple positioning bolts 106, and positions spiral shell
Bolt 106 is equidistantly laid along active pull rod 105, can be combined two groups of active pull rods 105 by positioning bolt 106,
It is stretched so that active pull rod 105 is able to carry out in vertical direction.
Working principle: firstly, architectural workpieces are placed on 303 external wall of upper portion of placement plate, the bottom of placement plate 303 and rotation
Chuck 302 is fixedly connected so that by rotary chuck 302 in the course of rotation, placement plate 303 be able to carry out it is driven, thus
So that placement plate 303 is able to carry out multi-angle rotary, solves and need to move repeatedly lifting device and meet multidirectional transport building
The problem of workpiece, then, the lower end of lifting shaft rod 109, are connected to hydraulic cylinder 108, the upper end and connecting pin 2 of lifting shaft rod 109
It is fixedly connected, when hydraulic cylinder 108 carries out hydraulic, so that lifting shaft rod 109 is subjected to displacement in the vertical direction, thus
Enable connecting pin 2 to have the function that lifting, and then, at the middle part of body 1 through setting gravity block 103, passes through gravity
Block 103 can increase the self weight of body 1, so that body 1 can be stablized in lifting process, solve lifting device appearance
Then the problem of being easily displaced is equipped with bending claws 101 in the outer wall setting of body 1, the lower end of bending claws 101 is solid by bolt
Surely it is connected with rubber feet 102, the contact area of body 1 Yu ground is capable of increasing by rubber feet 102, so as to reach
The effect for unloading power, the problem of avoiding 1 load excessive of body and cause deformation.This kind of building tower crane safety climbing ladder, in body 1
Through gravity block 103 is connected with, the center of body 1 is arranged in gravity block 103, can be increased by gravity block 103 for inside
The self weight of body 1 solves lifting device and is easy to happen asking for displacement so that body can be stablized in lifting process
Topic, effectively raises the stability of lifting device.This kind of building tower crane safety climbing ladder engages in the inside of snap groove 301 and connects
It is connected to rotary chuck 302, the outer diameter of rotary chuck 302 is less than the internal diameter of revoling tube 3, and 302 cross section of rotary chuck is in " work
Font " structure enables to rotary chuck 302 by engaging in the rotary chuck 302 of " I-shaped " structure with snap groove 301
It rotates in revoling tube 3, so that the placement plate being fixed on rotary chuck 302 is able to carry out multi-angle rotary, solves
The problem of moving repeatedly lifting device and meeting multidirectional transport architectural workpieces is needed, effectively raises what lifting device used
Convenience.This kind of building tower crane safety climbing ladder has been bolted to connection rubber feet 102 in the lower end of bending claws 101, has passed through
Rubber feet 102 is capable of increasing the contact area of body 1 Yu ground, and so as to achieve the effect that unload power, it is negative to avoid body
It carries excessive and causes the problem of deforming, and the surrounding of body 1 is arranged in four rubber feets 102, solve body 1 and be easy hair
Raw the problem of sliding axially, effectively raise the quality of lifting.This kind of building tower crane safety climbing ladder, it is separate in placement plate 303
The side of rotary chuck 302 is fixedly connected with friction pad 304, is directly contacted, is capable of increasing with architectural workpieces by friction pad 304
The frictional force that architectural workpieces are placed solves the problems, such as that architectural workpieces are easy sliding, effectively raises the stabilization for bearing workpiece
Property.This kind of building tower crane safety climbing ladder is fixedly connected with protective jacket frame 203, and protective jacket frame 203 on the top of workbench 201
Size be greater than the size of placement plate 303, through the setting of protective jacket frame 203 immediately below placement plate 303, in rotary chuck 302
When dislocating, it is able to carry out support placement plate 303, is easy to fall and cause safety to effectively avoid placement plate 303
The problem of accident, effectively raises the safety of lifting device.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of building tower crane safety climbing ladder, including body (1), connecting pin (2) and gravity block (103), it is characterised in that: described
Through being connected with gravity block (103), the gravity block (103) is arranged in the center of body (1), institute for the inside of body (1)
The outer wall surrounding for stating body (1) runs through there are four connections bending claws (101), and the lower end of the bending claws (101) is bolted company
It is connected to rubber feet (102), runs through in the middle part of the upper wall of the body (1) and be connected with lifting shaft rod (109), the lifting shaft rod
(109) upper end is connected with load-bearing pillar (107), and the upper end of the load-bearing pillar (107) is fixedly connected with connecting pin (2), institute
The external wall of upper portion for stating connecting pin (2) is fixedly connected with workbench (201), and the inside of the workbench (201), which is run through, is connected with rotation
The inner wall of pivoted housing pipe (3), the revoling tube (3) is fixedly connected with snap groove (301), the inside card of the snap groove (301)
Conjunction is connected with rotary chuck (302), and the outer diameter of the rotary chuck (302) is less than the internal diameter of revoling tube (3).
2. a kind of building tower crane safety climbing ladder according to claim 1, it is characterised in that: the rotary chuck (302) is remote
Side from revoling tube (3) is fixedly connected with placement plate (303), and the one of the placement plate (303) separate rotary chuck (302)
Side is fixedly connected with friction pad (304).
3. a kind of building tower crane safety climbing ladder according to claim 2, it is characterised in that: the workbench (201) it is upper
Portion is fixedly connected with protective jacket frame (203), and the size of the protective jacket frame (203) is greater than the size of placement plate (303), and
The middle part of protective jacket frame (203) is protruded into the lower end of the revoling tube (3).
4. a kind of building tower crane safety climbing ladder according to claim 3, it is characterised in that: the protective jacket frame (203)
Middle part is fixedly connected with cross bar (204), and the external wall of upper portion of the cross bar (204) and the lower part outer wall of revoling tube (3) are fixed
Connection.
5. a kind of building tower crane safety climbing ladder according to claim 1, it is characterised in that: the workbench (201) it is upper
Portion's outer wall is fixedly connected with protective fence (202), and the protective fence (202) is frame structure, the inner wall middle part of the body (1)
It is fixedly connected with hydraulic cylinder (108), and the upper end of the hydraulic cylinder (108) is connected to lifting shaft rod (109).
6. a kind of building tower crane safety climbing ladder according to claim 1, it is characterised in that: outside the top of the body (1)
Wall is fixedly connected with two groups of active pull rods (105), and two groups of active pull rods (105) are laid in intersection, and described two groups
The upper end of active pull rod (105) is fixedly connected with the lower part outer wall of workbench (2).
7. a kind of building tower crane safety climbing ladder according to claim 1, it is characterised in that: outside the lower part of the body (1)
There are four rotating wheel (104) for wall flexible connection, and the bottom of the rotating wheel (104) and the bottom of rubber feet (102) are in
In same horizontal line.
8. a kind of building tower crane safety climbing ladder according to claim 6, it is characterised in that: the active pull rod (105)
Outer wall, which runs through, to be connected with multiple positioning bolts (106), and the positioning bolt (106) is along active pull rod (105) equidistant cloth
If.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810808378.2A CN109179253A (en) | 2018-07-22 | 2018-07-22 | A kind of building tower crane safety climbing ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810808378.2A CN109179253A (en) | 2018-07-22 | 2018-07-22 | A kind of building tower crane safety climbing ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109179253A true CN109179253A (en) | 2019-01-11 |
Family
ID=64937003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810808378.2A Pending CN109179253A (en) | 2018-07-22 | 2018-07-22 | A kind of building tower crane safety climbing ladder |
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| Country | Link |
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| CN (1) | CN109179253A (en) |
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| CN207418220U (en) * | 2017-11-07 | 2018-05-29 | 韩磊 | A kind of civil engineering elevator |
| CN207395747U (en) * | 2017-11-23 | 2018-05-22 | 重庆中检工程质量检测有限公司 | A kind of supporting rack of total powerstation |
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