CN105540460A - Self-jacking device for jib crane - Google Patents
Self-jacking device for jib crane Download PDFInfo
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- CN105540460A CN105540460A CN201610059327.5A CN201610059327A CN105540460A CN 105540460 A CN105540460 A CN 105540460A CN 201610059327 A CN201610059327 A CN 201610059327A CN 105540460 A CN105540460 A CN 105540460A
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- Prior art keywords
- jacking
- standard knot
- frame
- introduction
- oil cylinder
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention relates to a self-jacking device for a jib crane and belongs to the technical field of hoisting machinery. The self-jacking device structurally comprises a drawing platform, a drawing cart, a base chassis, a standard section, a cage and a jacking bearing platform and a hydraulic jacking mechanism, wherein the base chassis and a ground anchor are fixedly connected; the standard section and the cage are sequentially connected with the basis chassis; a hydraulic cylinder is arranged inside the standard section; the lower end of the hydraulic cylinder is connected with the base chassis, and the upper end of the hydraulic cylinder is connected with the jacking bearing platform; one end of the drawing platform is connected with the base chassis, and other end of the drawing platform is connected with the cage through a pull rod; the drawing cart is placed on the drawing platform; and the standard section is placed on the drawing cart for drawing. According to a jacking method disclosed by the invention, climbing claws of the jacking bearing platform are in contact with a tread surface of the standard section, and self-jacking lifting is finished by free stretching of the hydraulic cylinder. The self-jacking device disclosed by the invention is simple and reasonable in structure and is easy for mounting and dismounting; the jacking method is stable and quick; the whole jacking process is operated on the ground; and the self-jacking device is free of aloft work, safe and reliable, and can be widely applied to various hoisting machines.
Description
Technical field
The present invention relates to a kind of arm crane from jacking apparatus, the arm crane that specifically a kind of removable standard knot, subsurface jacking and oil cylinder are built-in, from jacking apparatus, belongs to elevator machinery technical field.
Background technology
Generally speaking, in prior art, the jacking cylinder of jacking apparatus is one-sided setting, namely only the one-sided of climbing support is provided with jacking cylinder, and by the flexible jacking process completing climbing support of this jacking cylinder.Owing to only arranging jacking cylinder one-sided, in the jacking process of tower crane, tower body can be caused to be subject to force unbalance, cause jacking stability not strong, easily cause the accident.
Patent publication No. is CN203079590U, and publication date is that the Chinese patent of on 07 24th, 2013 discloses a kind of name and is called " a kind of tower crane and jacking apparatus thereof ".Climbing support of the prior art one-sided is arranged jacking cylinder and is improved to and arranges jacking cylinder in climbing support bilateral symmetry by this patent, although these device jacking cylinder both sides are arranged, climbing support stress balance, can not occur tilting because of by force unbalance, but how bilateral oil cylinder realizes synchronization of jacking up, be a large difficult point of this technology, not mentioned in this patent, temporary without effective way, therefore still there is above-mentioned defect in it.
Given this, how to design a kind of jacking apparatus, this device is stress balance in jacking process, and jacking is stable quick, safe and reliable, is the technical matters that those skilled in the art are badly in need of solving at present
Summary of the invention
For prior art Problems existing, the invention provides a kind of arm crane from jacking apparatus, it can realize the synchronization of jacking up of bilateral oil cylinder, and stress balance in jacking process, jacking is stable quick, and jacking overall process is terrestrial operation, without aloft work, safe and reliable, the arm crane of the workyard of all kinds of environment can be widely used in from jacking apparatus.
For achieving the above object, technical scheme of the present invention is: a kind of arm crane, from jacking apparatus, comprises and introduces dolly, introduction platform, basic underframe, hydraulic lifting oil cylinder, jacking cushion cap, standard knot and stock;
Described basic underframe is connected with extraneous earth anchorage, and described standard knot and stock are connected with described basic underframe successively;
Hydraulic lifting oil cylinder is installed in described standard knot;
Described hydraulic lifting oil cylinder lower end is connected with described basic underframe, and described hydraulic lifting cylinder upper end is connected with jacking cushion cap;
Described introduction platform one end is connected with basic 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 and introduces.
Further, described basic underframe comprises 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 centered by the first oil cylinder seat, and described inner tracks is all arranged in described first oil cylinder seat both sides.
Further, described standard knot comprises the U-shaped frame of standard knot and standard knot monolithic;
Be 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 orienting lug;
Described standard knot monolithic is made up of three the 3rd horizontal web members, two the 3rd diagonal web members, an anti-torsion bar and six the first connecting panels;
The position that the joint face of the U-shaped frame of described standard knot is corresponding with described standard knot monolithic is drilled with seven through holes, and the U-shaped frame of described standard knot and described standard knot monolithic are by bolt or pinned connection.
Further, described stock comprises the second main chord, the 4th horizontal web member, the 4th diagonal web member, four the second connecting panels and four track adjusting wheels;
The lower end of described stock two sides is all provided with standard knot and introduces opening, and four described track adjusting wheels are fixedly connected on inside described stock, and four described connecting panels are fixedly connected on described second main chord lower end.
Further, described jacking cushion cap comprises jacking frame, the second oil cylinder seat, climbs pawl and roller;
Described jacking frame is climbed pawl engaging lug formed by two Chang Liang, two short beams, a center member, four the 5th diagonal web members, four pieces of guide plates and eight piece;
Described long beam and short beam head and the tail are in turn connected to form frame, and described crossbeam is fixed on the centre of frame, and four even cloth of described 5th diagonal web member are in frame, and four pieces of described guide plates between two symmetry are distributed in Chang Liangshang;
Climb pawl engaging lug one group and be fixedly installed in described frame surrounding between two described in eight pieces, described second cylinder pedestal is positioned in the middle of described jacking frame, climbs pawl engaging lug and is connected with and climbs pawl, and guide plate described in every block is provided with eight described rollers.
Further, described introduction platform comprises two introduction tracks, two first horizontal web members, second diagonal web member, an outer crossbeam, two pieces of gussets, two pieces of otic placodes, two pull bars and two adjust bar 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 introduces track outer end, and 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 adjust bar device.
Further, described adjust bar device comprises two pieces and connects otic placode, screw rod, a nut and one piece of connecting panel;
Described connecting panel is drilled with through hole, and described screw rod one end is connected with nut through this through hole, and the screw rod other end is welded in two pieces and connects in the middle of otic placode.
Further, described introduction dolly comprises trolley frame and four introduction wheels;
Four described introduction wheels are fixed on trolley frame;
Described trolley frame is welded by two girders, two long diagonal braces, two short braces, two crossbeams, four pieces of stay bearing plates, four columns, ten pieces of gussets and four stepped shaft.
Arm crane is from a jacking method for jacking apparatus, and this jacking method comprises the steps:
1) pawl of climbing of jacking cushion cap contacts with standard knot step surface, by governor valve hydraulic control jacking cylinder free-extension;
2) described hydraulic lifting oil cylinder is positioned between basic underframe and described jacking cushion cap, is controlled the advance and retreat speed of the hydraulic oil on cylinder efficient oil circuit, thus realize the jacking of oil cylinder by forward governor valve and reverse governor valve.
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 is positioned over to be introduced on dolly and introduces from front, and standard knot monolithic is introduced frame U-shaped with standard knot again and is connected from the back side.
The invention has the beneficial effects as follows: 1, arm crane is formed by connecting by the manufacture of metal steel from climbing structure, each parts, by bolt or pinned connection, are convenient to installation, dismounting, convenient transportation, can repeat to recycle; 2, jacking overall process terrestrial operation, without aloft work, safe and reliable; 3, the inventive method is jacking in ground, often adds a joint standard knot, and jacking only needs a stroke just can put in place, greatly reduces the time that jacking process spends, increases work efficiency to greatest extent; 4, jacking cylinder of the present invention is single oil cylinder, and is inner jacking, and jacking process is steady, avoids two asynchronous hidden danger brought of cylinder jacking.
Accompanying drawing explanation
Fig. 1 is the integral structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the structural representation introducing dolly in the embodiment of the present invention;
Fig. 3 is the structural representation introducing platform in the embodiment of the present invention;
Fig. 4 is the structural representation of basic underframe in the embodiment of the present invention;
Fig. 5 is the structural representation of embodiment of the present invention Plays joint;
Fig. 6 is the structural representation that embodiment of the present invention Plays saves U-shaped frame;
Fig. 7 is the structural representation of embodiment of the present invention Plays joint monolithic;
Fig. 8 is the structural representation of jacking cushion cap in the embodiment of the present invention;
Fig. 9 is the structural representation of stock in the embodiment of the present invention;
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, VIII, the U-shaped frame of standard knot, IX, standard knot monolithic, 1, introduce wheel, 2, girder, 3, long diagonal brace, 4, short brace, 5, crossbeam, 6, stay bearing plate, 7, column, 8, gusset, 9, stepped shaft, 10, introduce track, 11, first horizontal web member, 12, first diagonal web member, 13, outer crossbeam, 14, gusset, 15, small ear plate, 16, big ear plate, 17, pull bar, 18, adjust bar device, 19, rood beam, 20, standard knot bearing, 21, stock bearing, 22, first oil cylinder seat, 23, inner tracks, 24, bracing wire hole, 25, first main chord, 26, second horizontal web member, 27, second diagonal web member, 28, guide rail, 29, gusset plate, 30, mark time, 31, adapter sleeve, 32, orienting lug, 33, 3rd horizontal web member, 34, 3rd diagonal web member, 35, anti-torsion bar, 36, first connecting panel, 37, second oil cylinder seat, 38, climb pawl, 39, roller, 40, long beam, 41, short beam, 42, center member, 43, 5th diagonal web member, 44, guide plate, 45, climb pawl engaging lug, 46, second main chord, 47, 4th horizontal web member, 48, 4th diagonal web member, 49, second connecting panel, 50, track adjusting wheel.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of arm crane, from jacking apparatus, comprises introduction dolly I, enters platform II, basic 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, and standard knot VII and stock VI are connected with basic underframe III successively, and hydraulic lifting oil cylinder IV is placed in the inner VII of standard knot; Hydraulic lifting oil cylinder IV lower end is connected with basic underframe III, upper end is connected with jacking cushion cap V, and introduce platform II one end and be connected with basic underframe, the other end is connected with stock VI by pull bar, introducing dolly I is placed on introduction platform II, and standard knot VII is positioned over to introduce on dolly I and introduces.
As shown in Figure 2: introduce dolly I and comprise a trolley frame and four introduction wheels 1.Trolley frame is welded by two girders, 2, two long diagonal braces, 3, two short braces, 4, two crossbeams, 5, four pieces of stay bearing plates, 6, four columns, 7, ten pieces of gussets 8 and four stepped shaft 9, and four introduction wheels 1 and four stepped shaft 9 are fastened on trolley frame successively.
As shown in Figure 3, this figure introduces platform II integral structure.Introduce platform II and comprise two introduction tracks, 10, two first horizontal web members, 11, first diagonal web member, 12, outer crossbeam, 13, two pieces of gussets, 14, two pieces of small ear plates, 15, four pieces of big ear plates, 16, two pull bars 17 and two adjust bar devices 18.First horizontal web member 11 and the first diagonal web member 12 are welded in introduces track 10 lower surface, outer crossbeam 13 is welded in introduces track 10 outer end, gusset 14 is connected with introduction track 10 and outer crossbeam 13 respectively, small ear plate 15 is welded in outer crossbeam 13 two ends, one end of pull bar 17 is connected with small ear plate 15, and the other end of pull bar 17 is connected with adjust bar device 18.
As shown in Figure 4, underframe III integral structure based on this figure.Basis underframe III mainly comprises rood beam 19, standard knot bearing 20, stock bearing 21, first oil cylinder seat 22 and inner tracks 23.Rood beam 19 4 end has bracing wire hole 24, first oil cylinder seat 22 and is positioned at rood beam center, and standard knot bearing 20 and stock bearing 21 are distributed in rood beam 19 surrounding centered by the first oil cylinder seat 22, and inner tracks 23 is distributed in the first oil cylinder seat 22 both sides.
As shown in Figure 5, this figure is standard knot VII integral structure, and standard knot VII comprises the U-shaped frame VIII of standard knot 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 is made up of four first main chords, 25, nine second horizontal web members 26, the six roots of sensation second diagonal web member 27 and two secondary guide rails 28.Between first main chord with the first main chord, upper, middle and lower are by gusset plate 29 or mark time and 30 be connected three second horizontal web members 26 and two second diagonal web members 27 successively, two secondary track 28 symmetries are welded in inside the U-shaped frame VIII of standard knot, standard knot U-shaped frame VIII respectively welds four adapter sleeves 31 in two ends, and upper end is provided with six orienting lugs 32.
As shown in Figure 7, this figure is standard knot monolithic IX structure.Standard knot monolithic is made up of three the 3rd horizontal web member 33, two the 3rd diagonal web members, 34, anti-torsion bars 35 and six piece of first connecting panel 36, standard knot U-shaped frame VIII joint face and standard knot monolithic IX are drilled with seven through holes in relevant position, the U-shaped frame of standard knot and standard knot monolithic are by bolt or pinned connection.
As shown in Figure 8, this figure is jacking cushion cap V integral structure.Jacking cushion cap V comprises a jacking frame, second oil cylinder seat 37, four climbs pawl 38 and 32 rollers 39.Jacking frame is climbed pawl engaging lug 45 by two long beams, 40, two short beams, 41, center member, 42, four the 5th diagonal web members, 43, four pieces of guide plates 44 and eight pieces and is formed.Long beam 40 joins end to end successively with short beam 41 and is welded into frame, crossbeam 42 is welded in frame middle, four diagonal web members 43 are distributed on frame inside, four pieces of guide plates 44 between two symmetry are distributed on long beam 40, eight pieces climb pawl engaging lug 45 between two an assembly welding in frame surrounding, second oil cylinder seat 37 is positioned at jacking frame middle, climbs pawl 38 and climbs pawl engaging lug 45 and be flexibly connected, and eight rollers 39 installed by every block guide plate.
As shown in Figure 9, this figure is stock VI integral structure.Stock VI comprises four second main chords 46, the horizontal web member 47 of (4N-4) root the 4th, (8N-16) root the 4th diagonal web member 48, four piece of second connecting panel 49 and four track adjusting wheels 50 and forms.Before and after stock VI, lower end, two sides is provided with standard knot and introduces opening, and four track adjusting wheels 50 are welded in inside stock VI upper end, and four pieces of connecting panels 49 are welded in four main chord lower ends.Wherein (N >=4, in the present embodiment, N is chosen for 5).
Arm crane is from a jacking method for jacking apparatus, and this jacking method comprises the steps:
1) pawl of climbing of jacking cushion cap contacts with standard knot step surface, by governor valve hydraulic control jacking cylinder free-extension;
2) described hydraulic lifting oil cylinder is positioned between basic underframe and described jacking cushion cap, is controlled the advance and retreat speed of the hydraulic oil on cylinder efficient oil circuit, thus realize the jacking of oil cylinder by forward governor valve and reverse governor valve.
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 is positioned over to be introduced on dolly and introduces from front, and standard knot monolithic is introduced frame U-shaped with standard knot again and is connected from the back side.
In addition, it should be noted that, the specific embodiment described in this specification sheets, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this specification sheets is only to structure example of the present invention explanation.The equivalence change that structure, feature and the principle of all foundations described in inventional idea of the present invention are done or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (10)
1. arm crane is from a jacking apparatus, it is characterized in that: comprise and introduce dolly, introduction platform, basic underframe, hydraulic lifting oil cylinder, jacking cushion cap, standard knot and stock;
Described basic underframe is connected with extraneous earth anchorage, and described standard knot and stock are connected with described basic underframe successively;
Hydraulic lifting oil cylinder is installed in described standard knot;
Described hydraulic lifting oil cylinder lower end is connected with described basic underframe, and described hydraulic lifting cylinder upper end is connected with jacking cushion cap;
Described introduction platform one end is connected with basic 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 and introduces.
2. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described basic underframe comprises 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 centered by the first oil cylinder seat, and described inner tracks is all arranged in described first oil cylinder seat both sides.
3. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described standard knot comprises the U-shaped frame of standard knot and standard knot monolithic;
Be 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 orienting lug;
Described standard knot monolithic is made up of three the 3rd horizontal web members, two the 3rd diagonal web members, an anti-torsion bar and six the first connecting panels;
The position that the joint face of the U-shaped frame of described standard knot is corresponding with described standard knot monolithic is drilled with seven through holes, and the U-shaped frame of described standard knot and described standard knot monolithic are by bolt or pinned connection.
4. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described stock comprises the second main chord, the 4th horizontal web member, the 4th diagonal web member, four the second connecting panels and four track adjusting wheels;
The lower end of described stock two sides is all provided with standard knot and introduces opening, and four described track adjusting wheels are fixedly connected on inside described stock, and four described connecting panels are fixedly connected on described second main chord lower end.
5. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described jacking cushion cap comprises jacking frame, the second oil cylinder seat, climbs pawl and roller;
Described jacking frame is climbed pawl engaging lug formed by two Chang Liang, two short beams, a center member, four the 5th diagonal web members, four pieces of guide plates and eight piece;
Described long beam and short beam head and the tail are in turn connected to form frame, and described crossbeam is fixed on the centre of frame, and four even cloth of described 5th diagonal web member are in frame, and four pieces of described guide plates between two symmetry are distributed in Chang Liangshang;
Climb pawl engaging lug one group and be fixedly installed in described frame surrounding between two described in eight pieces, described second cylinder pedestal is positioned in the middle of described jacking frame, climbs pawl engaging lug and is connected with and climbs pawl, and guide plate described in every block is provided with eight described rollers.
6. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described introduction platform comprises two introduction tracks, two first horizontal web members, second diagonal web member, an outer crossbeam, two pieces of gussets, two pieces of otic placodes, two pull bars and two adjust bar 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 introduces track outer end, and 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 adjust bar device.
7. a kind of arm crane according to claim 6 is from jacking apparatus, it is characterized in that: described adjust bar device comprises two pieces and connects otic placode, screw rod, a nut and one piece of connecting panel;
Described connecting panel is drilled with through hole, and described screw rod one end is connected with nut through this through hole, and the screw rod other end is welded in two pieces and connects in the middle of otic placode.
8. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described introduction dolly comprises trolley frame and four introduction wheels;
Four described introduction wheels are fixed on trolley frame;
Described trolley frame is welded by two girders, two long diagonal braces, two short braces, two crossbeams, four pieces of stay bearing plates, four columns, ten pieces of gussets and four stepped shaft.
9. arm crane is from a jacking method for jacking apparatus, it is characterized in that, this jacking method comprises the steps:
1) pawl of climbing of jacking cushion cap contacts with standard knot step surface, by governor valve hydraulic control jacking cylinder free-extension;
2) described hydraulic lifting oil cylinder is positioned between basic underframe and described jacking cushion cap, is controlled the advance and retreat speed of the hydraulic oil on cylinder efficient oil circuit, thus realize the jacking of oil cylinder by forward governor valve and reverse governor valve.
10. a kind of arm crane according to claim 9 is from the jacking method of jacking apparatus, it is characterized in that: 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 is positioned over to be introduced on dolly and introduces from front, and standard knot monolithic is introduced frame U-shaped with standard knot again and is connected from the back side.
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| CN201610059327.5A CN105540460B (en) | 2016-01-28 | 2016-01-28 | A kind of arm crane is from jacking apparatus |
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| CN106744367A (en) * | 2016-12-09 | 2017-05-31 | 徐州建机工程机械有限公司 | A kind of tower crane jacking is from introducing equipment, system and control method |
| CN108128714A (en) * | 2017-12-13 | 2018-06-08 | 江麓机电集团有限公司 | A kind of derrick crane introduces platform safety protective device |
| CN109610884A (en) * | 2018-10-26 | 2019-04-12 | 中国人民解放军32181部队 | A kind of auxiliary maintaining equipment for gadget rescue repairing |
| CN109879179A (en) * | 2019-01-25 | 2019-06-14 | 中亿丰建设集团股份有限公司 | A kind of assembling type steel structure tower crane platform |
| CN111706149A (en) * | 2020-05-29 | 2020-09-25 | 浙江省建设机械集团有限公司 | Construction method of novel assembled holding pole |
| CN111792545A (en) * | 2020-08-13 | 2020-10-20 | 徐州工程学院 | Flat-head tower crane with lower jacking and joint adding mechanism |
| CN113585860A (en) * | 2021-09-02 | 2021-11-02 | 扬州国电通用电力机具制造有限公司 | Device and method for mounting and dismounting double-arm holding pole |
| CN114014177A (en) * | 2021-11-17 | 2022-02-08 | 郑州新大方重工科技有限公司 | Node-added height increasing device, node-added height increasing method and crane |
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| CN106744367A (en) * | 2016-12-09 | 2017-05-31 | 徐州建机工程机械有限公司 | A kind of tower crane jacking is from introducing equipment, system and control method |
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| CN109879179A (en) * | 2019-01-25 | 2019-06-14 | 中亿丰建设集团股份有限公司 | A kind of assembling type steel structure tower crane platform |
| CN109879179B (en) * | 2019-01-25 | 2024-03-26 | 中亿丰建设集团股份有限公司 | Assembled steel construction tower crane platform |
| CN111706149A (en) * | 2020-05-29 | 2020-09-25 | 浙江省建设机械集团有限公司 | Construction method of novel assembled holding pole |
| CN111792545A (en) * | 2020-08-13 | 2020-10-20 | 徐州工程学院 | Flat-head tower crane with lower jacking and joint adding mechanism |
| CN113585860A (en) * | 2021-09-02 | 2021-11-02 | 扬州国电通用电力机具制造有限公司 | Device and method for mounting and dismounting double-arm holding pole |
| CN114014177A (en) * | 2021-11-17 | 2022-02-08 | 郑州新大方重工科技有限公司 | Node-added height increasing device, node-added height increasing method and crane |
| CN115030211A (en) * | 2022-06-16 | 2022-09-09 | 山东高速舜通路桥工程有限公司 | Method for constructing concrete bearing platform |
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