CN205527429U - Jib crane is from jacking device - Google Patents

Jib crane is from jacking device Download PDF

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Publication number
CN205527429U
CN205527429U CN201620086338.8U CN201620086338U CN205527429U CN 205527429 U CN205527429 U CN 205527429U CN 201620086338 U CN201620086338 U CN 201620086338U CN 205527429 U CN205527429 U CN 205527429U
Authority
CN
China
Prior art keywords
jacking
introduction
standard knot
frame
stock
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.)
Withdrawn - After Issue
Application number
CN201620086338.8U
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Chinese (zh)
Inventor
张松华
徐侠松
张坤义
鄂志伟
金鹤翔
周立宏
李凯
朱云彪
詹卓斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Construction Machinery Group Co Ltd
State Grid Corp of China SGCC
Hubei Electric Power Transmission and Distribution Engineering Co Ltd
Original Assignee
Zhejiang Construction Machinery Group Co Ltd
State Grid Corp of China SGCC
Hubei Electric Power Transmission and Distribution Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Construction Machinery Group Co Ltd, State Grid Corp of China SGCC, Hubei Electric Power Transmission and Distribution Engineering Co Ltd filed Critical Zhejiang Construction Machinery Group Co Ltd
Priority to CN201620086338.8U priority Critical patent/CN205527429U/en
Application granted granted Critical
Publication of CN205527429U publication Critical patent/CN205527429U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a jib crane is from jacking device, it belongs to hoisting machinery technical field. The utility model discloses the structure is including the introduction platform, the introduction dolly, the basis chassis, the standard festival, the stock, jacking cushion cap and hydraulic pressure climbing mechanism, basis chassis and earth anchor fixed connection, the standard festival is connected with basic chassis with the stock in proper order, it is inside that the standard festival is arranged in to the pneumatic cylinder, the pneumatic cylinder lower extreme is connected with basic chassis, the upper end is connected with the jacking cushion cap, introduction platform one end is connected with basic chassis, one end is passed through the pull rod and is connected with the stock, the introduction dolly is placed on the introduction platform, the standard festival is placed and is introduced on the introduction dolly, the utility model discloses a jacking method is climbed the claw for the jacking cushion cap and is contacted with the standard festival face of marking time, freely stretches out and draws back to accomplish through the pneumatic cylinder and falls from the jacking. The utility model has the advantages of simple and reasonable structure, easily installation dismantlement, jacking method are stably swift, the operation of jacking overall process ground, no high altitude construction, safe and reliable, but wide application in all kinds of hoisting machineries.

Description

A kind of arm crane is from jacking apparatus
Technical field
The utility model relates to a kind of arm crane from jacking apparatus, a kind of removable standard knot, subsurface jacking and The built-in arm crane of oil cylinder, from jacking apparatus, belongs to hoisting machinery technical field.
Background technology
It is said that in general, the jacking cylinder of jacking apparatus is unilateral setting in prior art, i.e. only the one side of climbing support is provided with top Oil-lifting jar, and by the flexible jacking process completing climbing support of this jacking cylinder.Owing to only arranging jacking cylinder in one side, During the jacking of derrick crane, tower body can be caused by force unbalance, cause jacking stability not strong, easily cause accident.
Patent publication No. is CN203079590U, and publication date is that the Chinese patent of on 07 24th, 2013 discloses a kind of title For " a kind of derrick crane and jacking apparatus thereof ".The one side of climbing support of the prior art is arranged jacking cylinder and improves by this patent For arranging jacking cylinder in climbing support bilateral symmetry, although these device jacking cylinder both sides are arranged, climbing support stress balance will not Because being occurred by force unbalance, but how bilateral oil cylinder realizing synchronization of jacking up, is a big difficult point of this technology, this is special In profit and not mentioned, temporarily without effective way, therefore still there is drawbacks described above in it.
In consideration of it, how to design a kind of jacking apparatus, this device stress balance during jacking, jacking is stably quick, safety Reliably, it is that those skilled in the art are badly in need of solving the technical problem that at present
Utility model content
The problem existed for prior art, the utility model provides a kind of arm crane from jacking apparatus, and it is capable of double Side cylinder synchronization of jacking up, and stress balance during jacking, jacking is stably quick, and jacking overall process is ground behaviour Make, without work high above the ground, safe and reliable, it is possible to be widely used in the arm crane of construction site of all kinds of environment from jacking apparatus.
For achieving the above object, the technical solution of the utility model is: a kind of arm crane is from jacking apparatus, little including introducing Car, introduction platform, basis underframe, hydraulic lifting oil cylinder, jacking cushion cap, standard knot and stock;
Described basis underframe is connected with extraneous earth anchorage, and described standard knot and stock are connected with described basis underframe successively;
Hydraulic lifting oil cylinder is installed in described standard knot;
Described hydraulic lifting oil cylinder lower end is connected with described basis underframe, and described hydraulic lifting cylinder upper end is connected with jacking cushion cap;
Described introduction platform one end is connected with basis underframe, and the described introduction platform other end is connected with described stock;
Described introduction dolly is positioned on described introduction platform, and described standard knot is positioned on described introduction dolly introduction.
Further, described basis underframe includes rood beam, standard knot bearing, stock bearing, the first oil cylinder seat and inner tracks;
Described rood beam four end has bracing wire hole, and described first oil cylinder seat is positioned at described rood beam center;
Described standard knot bearing and stock bearing are evenly arranged in described rood beam surrounding, described inside centered by the first oil cylinder seat Track is all arranged in described first oil cylinder seat both sides.
Further, described standard knot includes the U-shaped frame of standard knot and standard knot monolithic;
It is provided with two secondary tracks in the U-shaped frame of described standard knot, the U-shaped frame of described standard knot is provided with adapter sleeve and guide pad;
Described standard knot monolithic is by three the 3rd horizontal web members, two the 3rd diagonal web members, an anti-torsion bar and six the first connecting plate groups Become;
The joint face of the U-shaped frame of the described standard knot position corresponding with described standard knot monolithic is drilled with seven through holes, and described mark The U-shaped frame of quasi-joint is connected by bolt or bearing pin with described standard knot monolithic.
Further, described stock includes the second main chord, the 4th horizontal web member, the 4th diagonal web member, four the second connecting plates and four Directive wheel;
The lower end of described two sides of stock is designed with standard knot and introduces opening, and four described directive wheels are fixedly connected on described stock Inner side, four described connecting plates are fixedly connected on described second main chord lower end.
Further, described jacking cushion cap includes jacking frame, the second oil cylinder seat, climbs pawl and roller;
Described jacking frame is by two root length beams, two short beams, a middle cross beam, four the 5th diagonal web members, four pieces of guide plates and eight pieces Climb pawl engaging lug composition;
Described long beam is in turn connected to form frame with short beam head and the tail, and described crossbeam is fixed on the centre of frame, four described 5th diagonal web members Uniformly cloth is in frame, and four pieces of described guide plate symmetries two-by-two are distributed in Chang Liangshang;
Climbing pawl engaging lug one group and be fixedly installed in described frame surrounding two-by-two described in eight pieces, described second cylinder pedestal is positioned at described top Rise in the middle of frame, climb pawl engaging lug and be connected with and climb pawl, and eight described rollers are installed on every piece of described guide plate.
Further, described introduction platform include two introduction tracks, two first horizontal web members, second diagonal web member, outside one Crossbeam, two pieces of gussets, two pieces of otic placodes, two pull bars and two adjusting rod devices;
Described first horizontal web member and the first diagonal web member are welded in described introduction track lower surface;Described outer crossbeam is welded in introduction track outer end, Described gusset is connected with introduction track and outer crossbeam respectively, and described otic placode is welded in outer crossbeam two ends;
One end of described pull bar is connected with otic placode, and the other end of pull bar is connected with adjusting rod device.
Further, described adjusting rod device includes that two pieces connect otic placode, a screw rod, a nut and one piece of connecting plate;
Being drilled with through hole on described connecting plate, described screw rod one end is connected through this through hole with nut, and the screw rod other end is welded in two pieces of companies In the middle of ear connecting plate.
Further, described introduction dolly includes trolley frame and four introduction wheels;
Four described introduction wheels are fixed on trolley frame;
Described trolley frame by two girders, two root length braces, two short braces, two crossbeams, four pieces of gripper shoes, four columns, Ten pieces of gussets and four multidiameters are welded.
The beneficial effects of the utility model are: 1, arm crane is formed by connecting by metal steel manufacture from climbing structure, each portion Part is connected by bolt or bearing pin, it is simple to installs, dismantle, convenient transportation, repeatable recycling;2, jacking overall process ground Operation, without work high above the ground, safe and reliable;3, jacking in the utility model method is ground, often adds a joint standard knot, and jacking is only Need a stroke just can put in place, greatly reduce the time that jacking process is spent, improve operating efficiency to greatest extent;4, this reality Be single oil cylinder with novel jacking cylinder, and be internal jacking, jacking process is steady, it is to avoid double cylinder jackings are asynchronous to be brought Hidden danger.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model embodiment;
Fig. 2 is the structural representation introducing dolly in the utility model embodiment;
Fig. 3 is the structural representation introducing platform in the utility model embodiment;
Fig. 4 is the structural representation of basis underframe in the utility model embodiment;
Fig. 5 is the structural representation of the utility model embodiment Plays joint;
Fig. 6 is the structural representation that the utility model embodiment Plays saves U-shaped frame;
Fig. 7 is the structural representation of the utility model embodiment Plays joint monolithic;
Fig. 8 is the structural representation of jacking cushion cap in the utility model embodiment;
Fig. 9 is the structural representation of stock in the utility model embodiment;
In figure: I, introduce dolly, II, introduce platform, III, basis underframe, IV, hydraulic lifting oil cylinder, V, jacking cushion cap, VI, stock, VII, standard knot, the U-shaped frame of VIII, standard knot, IX, standard knot monolithic, 1, introduce wheel, 2, girder, 3, Long diagonal brace, 4, short brace, 5, crossbeam, 6, gripper shoe, 7, column, 8, gusset, 9, multidiameter, 10, introduce track, 11, the first horizontal web member, the 12, first diagonal web member, 13, outer crossbeam, 14, gusset, 15, small ear plate, 16, big ear plate, 17, Pull bar, 18, adjusting rod device, 19, rood beam, 20, standard knot bearing, 21, stock bearing, the 22, first oil cylinder seat, 23, inner tracks, 24, bracing wire hole, the 25, first main chord, the 26, second horizontal web member, the 27, second diagonal web member, 28, lead Rail, 29, gusset plate, 30, mark time, 31, adapter sleeve, 32, guide pad, the 33, the 3rd horizontal web member, the 34, the 3rd diagonal web member, 35, anti-torsion bar, the 36, first connecting plate, the 37, second oil cylinder seat, 38, climb pawl, 39, roller, 40, Chang Liang, 41, short Beam, 42, middle cross beam, the 43, the 5th diagonal web member, 44, guide plate, 45, climb pawl engaging lug, the 46, second main chord, 47, 4th horizontal web member, the 48, the 4th diagonal web member, the 49, second connecting plate, 50, directive wheel.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clear, It is fully described by.Obviously, described embodiment is only a part of embodiment of the utility model rather than whole embodiments. Based on the embodiment in the utility model, the institute that those of ordinary skill in the art are obtained under not making creative work premise There are other embodiments, broadly fall into the scope of the utility model protection.
As it is shown in figure 1, a kind of arm crane is from jacking apparatus, including introduce dolly I, enter platform II, basis underframe III, Hydraulic lifting oil cylinder IV, jacking cushion cap V, stock VI and standard knot VII.Basis underframe III is connected with extraneous earth anchorage, Standard knot VII and stock VI is connected with basis underframe III successively, and hydraulic lifting oil cylinder IV is placed in the internal VII of standard knot;Hydraulic top Oil-lifting jar IV lower end is connected with basis underframe III, and upper end is connected with jacking cushion cap V, introduces platform II one end and is connected with basis underframe, The other end is connected with stock VI by pull bar, introduces dolly I and is placed on introduction platform II, and it is little that standard knot VII is positioned over introduction Introduce on car I.
As shown in Figure 2: introduce dolly I and include a trolley frame and four introduction wheels 1.Trolley frame is by two girders 2, two root length 5, four pieces of gripper shoes of 4, two crossbeams of the short brace of brace 3, two, 7, ten pieces of gussets 8 of 6, four columns and four multidiameters 9 Being welded, four introduction wheels 1 and four multidiameters 9 are sequentially connected with and are fixed on trolley frame.
As it is shown on figure 3, this figure is to introduce platform II overall structure.Introduce platform II and include 10, two first, two introduction tracks Horizontal web member 11, first diagonal web member, 13, two pieces of gussets of 12, outer crossbeam, 15, four pieces of big ear plates of 14, two pieces of small ear plates 16, two pull bars 17 and two adjusting rod devices 18.First horizontal web member 11 and the first diagonal web member 12 are welded in introduction track 10 times Surface, outer crossbeam 13 is welded in introduction track 10 outer end, and gusset 14 is connected with introduction track 10 and outer crossbeam 13 respectively, microtia Plate 15 is welded in outer crossbeam 13 two ends, and one end of pull bar 17 is connected with small ear plate 15, the other end of pull bar 17 and adjusting rod device 18 connect.
As shown in Figure 4, underframe III overall structure based on this figure.Basis underframe III mainly includes rood beam 19, standard knot bearing 20, stock bearing the 21, first oil cylinder seat 22 and inner tracks 23.Rood beam 19 4 end has bracing wire hole 24, the first oil cylinder Seat 22 is positioned at rood beam center, standard knot bearing 20 and stock bearing 21 and is distributed in rood beam centered by the first oil cylinder seat 22 19 surroundings, inner tracks 23 is distributed in the first oil cylinder seat 22 both sides.
As it is shown in figure 5, this figure is standard knot VII overall structure, standard knot VII includes standard knot U-shaped frame VIII and standard knot Monolithic IX.
As shown in Figure 6, this figure is standard knot U-shaped frame VIII structure.Standard knot U-shaped frame VIII by four first main chords 25, Nine second horizontal web members 26, the six roots of sensation the second diagonal web member 27 and two secondary guide rails 28 form.Between first main chord and the first main chord Upper, middle and lower are by gusset plate 29 or mark time and 30 be sequentially connected with three second horizontal web members 26 and two second diagonal web members 27, and two Secondary track 28 symmetry is welded in inside standard knot U-shaped frame VIII, and standard knot U-shaped frame VIII respectively welds four adapter sleeves 31 in two ends, Upper end is provided with six guide pads 32.
As it is shown in fig. 7, this figure is standard knot monolithic IX structure.Standard knot monolithic is by three the 3rd horizontal web members 33, two the 3rd The anti-torsion bar 35 of diagonal web member 34, one and six piece of first connecting plate 36 form, standard knot U-shaped frame VIII joint face and standard knot Monolithic IX is drilled with seven through holes in relevant position, and the U-shaped frame of standard knot is connected by bolt or bearing pin with standard knot monolithic.
As shown in Figure 8, this figure is jacking cushion cap V overall structure.Jacking cushion cap V includes a jacking frame, second oil cylinder Seat 37, four climbs pawl 38 and 32 rollers 39.Jacking frame is by two root length beams, 41, middle cross beam of 40, two short beams 42,43, four pieces of guide plates 44 of four the 5th diagonal web members and eight pieces are climbed pawl engaging lug 45 and are formed.Long beam 40 is with short beam 41 successively Joining end to end and be welded into frame, crossbeam 42 is welded in frame middle, and four diagonal web members 43 are distributed on inside frame, four pieces of guide plates 44 liang Two symmetries are distributed on long beam 40, climb pawl engaging lug 45 assembly welding two-by-two for eight pieces and are positioned at jacking frame in frame surrounding, the second oil cylinder seat 37 Middle, climbs pawl 38 and climbs pawl engaging lug 45 and be flexibly connected, and every piece of guide plate is installed eight rollers 39.
As it is shown in figure 9, this figure is stock VI overall structure.Stock VI includes four second main chords 46, (4N-4) root 4th horizontal web member 47, (8N-16) root the 4th 48, four piece of second connecting plate 49 of diagonal web member and four directive wheels 50 form.Set Before and after frame VI, lower end, two sides is provided with standard knot and introduces opening, and four directive wheels 50 are welded in inside stock VI upper end, four pieces of connections Plate 49 is welded in four main chord lower ends.Wherein (N >=4, in the present embodiment, N is chosen for 5).
A kind of arm crane is from the jacking method of jacking apparatus, and this jacking method comprises the steps:
1) pawl of climbing of jacking cushion cap contacts with standard knot step surface, controls hydraulic lifting oil cylinder by flow speed control valve and freely stretches;
2) described hydraulic lifting oil cylinder is positioned between basis underframe and described jacking cushion cap, by forward flow speed control valve and reverse speed governing Valve controls the advance and retreat speed of the hydraulic oil on cylinder efficient oil circuit, thus realizes the jacking of oil cylinder.
Further, described jacking method is when introducing standard knot, and standard knot is split as the U-shaped frame of standard knot and standard knot monolithic,
Wherein, the U-shaped frame of standard knot be positioned over introduction dolly on and from front introduce, standard knot monolithic from the back side introduce again with standard Save U-shaped frame to connect.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named title Etc. can be different, the above content described in this specification be only to the utility model structure example explanation.All depend on The equivalence change done according to structure, feature and the principle described in the utility model inventional idea or simple change, be all included in this In the protection domain of utility model patent.Described can be embodied as by the utility model person of ordinary skill in the field Example is made various amendment or supplements or use similar mode to substitute, without departing from structure of the present utility model or surmount Scope defined in the claims, all should belong to protection domain of the present utility model.

Claims (8)

1. an arm crane is from jacking apparatus, it is characterised in that: include introducing dolly, introducing platform, basis underframe, liquid Bear down on one oil-lifting jar, jacking cushion cap, standard knot and stock;
Described basis underframe is connected with extraneous earth anchorage, and described standard knot and stock are connected with described basis underframe successively;
Hydraulic lifting oil cylinder is installed in described standard knot;
Described hydraulic lifting oil cylinder lower end is connected with described basis underframe, and described hydraulic lifting cylinder upper end is connected with jacking cushion cap;
Described introduction platform one end is connected with basis underframe, and the described introduction platform other end is connected with described stock;
Described introduction dolly is positioned on described introduction platform, and described standard knot is positioned on described introduction dolly introduction.
A kind of arm crane the most according to claim 1 is from jacking apparatus, it is characterised in that: described basis underframe includes Rood beam, standard knot bearing, stock bearing, the first oil cylinder seat and inner tracks;
Described rood beam four end has bracing wire hole, and described first oil cylinder seat is positioned at described rood beam center;
Described standard knot bearing and stock bearing are evenly arranged in described rood beam surrounding, described inside centered by the first oil cylinder seat Track is all arranged in described first oil cylinder seat both sides.
A kind of arm crane the most according to claim 1 is from jacking apparatus, it is characterised in that: described standard knot includes mark The U-shaped frame of quasi-joint and standard knot monolithic;
It is provided with two secondary tracks in the U-shaped frame of described standard knot, the U-shaped frame of described standard knot is provided with adapter sleeve and guide pad;
Described standard knot monolithic is by three the 3rd horizontal web members, two the 3rd diagonal web members, an anti-torsion bar and six the first connecting plate groups Become;
The joint face of the U-shaped frame of the described standard knot position corresponding with described standard knot monolithic is drilled with seven through holes, and described mark The U-shaped frame of quasi-joint is connected by bolt or bearing pin with described standard knot monolithic.
A kind of arm crane the most according to claim 1 is from jacking apparatus, it is characterised in that: described stock includes second Main chord, the 4th horizontal web member, the 4th diagonal web member, four the second connecting plates and four directive wheels;
The lower end of described two sides of stock is designed with standard knot and introduces opening, and four described directive wheels are fixedly connected on described stock Inner side, four described connecting plates are fixedly connected on described second main chord lower end.
A kind of arm crane the most according to claim 1 is from jacking apparatus, it is characterised in that: described jacking cushion cap includes Jacking frame, the second oil cylinder seat, climb pawl and roller;
Described jacking frame is by two root length beams, two short beams, a middle cross beam, four the 5th diagonal web members, four pieces of guide plates and eight pieces Climb pawl engaging lug composition;
Described long beam is in turn connected to form frame with short beam head and the tail, and described crossbeam is fixed on the centre of frame, four described 5th diagonal web members Uniformly cloth is in frame, and four pieces of described guide plate symmetries two-by-two are distributed in Chang Liangshang;
Climbing pawl engaging lug one group and be fixedly installed in described frame surrounding two-by-two described in eight pieces, described second cylinder pedestal is positioned at described top Rise in the middle of frame, climb pawl engaging lug and be connected with and climb pawl, and eight described rollers are installed on every piece of described guide plate.
A kind of arm crane the most according to claim 1 is from jacking apparatus, it is characterised in that: described introduction platform includes Two introduction tracks, two first horizontal web members, second diagonal web member, outer crossbeam, two pieces of gussets, two pieces of otic placodes, two Root pull bar and two adjusting rod devices;
Described first horizontal web member and the first diagonal web member are welded in described introduction track lower surface;Described outer crossbeam is welded in introduction track outer end, Described gusset is connected with introduction track and outer crossbeam respectively, and described otic placode is welded in outer crossbeam two ends;
One end of described pull bar is connected with otic placode, and the other end of pull bar is connected with adjusting rod device.
A kind of arm crane the most according to claim 6 is from jacking apparatus, it is characterised in that: described adjusting rod device bag Include two pieces and connect otic placode, a screw rod, a nut and one piece of connecting plate;
Being drilled with through hole on described connecting plate, described screw rod one end is connected through this through hole with nut, and the screw rod other end is welded in two pieces of companies In the middle of ear connecting plate.
A kind of arm crane the most according to claim 1 is from jacking apparatus, it is characterised in that: described introduction dolly includes Trolley frame and four introduction wheels;
Four described introduction wheels are fixed on trolley frame;
Described trolley frame by two girders, two root length braces, two short braces, two crossbeams, four pieces of gripper shoes, four columns, Ten pieces of gussets and four multidiameters are welded.
CN201620086338.8U 2016-01-28 2016-01-28 Jib crane is from jacking device Withdrawn - After Issue CN205527429U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620086338.8U CN205527429U (en) 2016-01-28 2016-01-28 Jib crane is from jacking device

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Application Number Priority Date Filing Date Title
CN201620086338.8U CN205527429U (en) 2016-01-28 2016-01-28 Jib crane is from jacking device

Publications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540460A (en) * 2016-01-28 2016-05-04 国家电网公司 Self-jacking device for jib crane
CN108557721A (en) * 2018-05-11 2018-09-21 中南大学 A kind of inspection platform
CN111170180A (en) * 2020-02-25 2020-05-19 徐州建机工程机械有限公司 Sliding structure matched between standard knot of tower crane and jacking sleeve frame
CN111691688A (en) * 2020-06-16 2020-09-22 中国建筑股份有限公司 Jacking supporting device for building construction and using method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540460A (en) * 2016-01-28 2016-05-04 国家电网公司 Self-jacking device for jib crane
CN105540460B (en) * 2016-01-28 2018-03-27 国家电网公司 A kind of arm crane is from jacking apparatus
CN108557721A (en) * 2018-05-11 2018-09-21 中南大学 A kind of inspection platform
CN111170180A (en) * 2020-02-25 2020-05-19 徐州建机工程机械有限公司 Sliding structure matched between standard knot of tower crane and jacking sleeve frame
WO2021169441A1 (en) * 2020-02-25 2021-09-02 徐州建机工程机械有限公司 Sliding structure matched between standard section and jacking sleeve frame of tower crane
CN111691688A (en) * 2020-06-16 2020-09-22 中国建筑股份有限公司 Jacking supporting device for building construction and using method

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Granted publication date: 20160831

Effective date of abandoning: 20180327