CN112112081B - Walking type pushing equipment and pushing method - Google Patents
Walking type pushing equipment and pushing method Download PDFInfo
- Publication number
- CN112112081B CN112112081B CN202011036303.0A CN202011036303A CN112112081B CN 112112081 B CN112112081 B CN 112112081B CN 202011036303 A CN202011036303 A CN 202011036303A CN 112112081 B CN112112081 B CN 112112081B
- Authority
- CN
- China
- Prior art keywords
- jack
- contact body
- lifting mechanism
- rolling
- rolling contact
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention relates to walking type pushing equipment and a pushing method, the equipment comprises a base, a first jack, a second jack and an oil cylinder, the first jack is fixedly connected with the base, the second jack is connected with the base in a rolling manner, an outer cylinder barrel of the oil cylinder is fixedly connected with the first jack, a piston rod of the oil cylinder is fixedly connected with the second jack, a member to be pushed is contacted above the first jack and the second jack, the member to be pushed is contacted or in rolling contact with the top surface of the first jack, a contact member is contacted or in rolling contact with the top surface of the second jack, the oil cylinder drives the second jack to move horizontally, the member to be pushed is horizontally moved along with the second jack by switching the contact modes of the member to be pushed, the first jack and the second jack, and the oil cylinder, the first jack and the second jack are all connected with a controller. Compared with the prior art, effectively promote the reliability and the security that push away equipment, improve life and work efficiency simultaneously.
Description
Technical Field
The invention relates to the field of bridge construction engineering equipment, in particular to a walking type pushing device pushing method.
Background
The thrustor is widely applied to the field of bridge construction, in particular to the conditions of large bridge span, river crossing, sea crossing, road crossing and other complex construction environments. The pushing construction is divided into two types, namely dragging type pushing and walking type pushing. During push-pull type pushing construction, when the pushing distance is long, a hydraulic cylinder is required to push for multiple times to complete a construction task, a counter-force seat is required to be arranged on a pushing device, the counter-force seat needs to be repeatedly disassembled and moved forwards during stacking construction of pushing strokes, and construction is complicated and time-consuming; the walking type pushing generally carries out 4 steps of 'jacking up, horizontal pushing, lowering and resetting' of a bridge in a circulating stepping type propelling mode, the construction efficiency is improved, the counter force is only the internal force of the device, but the bridge needs to be jacked up and then lowered down in sequence when moving, vibration can bring damage to a piece to be jacked up and lowered down in the jacking process, meanwhile, the existing walking type pushing device mostly adopts surface contact, and the sliding friction surface is easy to wear in the propelling process.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a pushing method of walking type pushing equipment.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a walking top pushes away equipment, includes base, first jack, second jack and hydro-cylinder, first jack and base fixed connection, second jack and base roll connection, the first jack of outer cylinder fixed connection of hydro-cylinder, the piston rod fixed connection second jack of hydro-cylinder, the top contact of first jack and second jack treats the propelling movement piece, treat propelling movement piece and first jack top surface contact or roll contact, contact and second jack top surface contact or roll contact, the hydro-cylinder drives second jack horizontal migration, realizes treating propelling movement piece along with second jack horizontal migration through treating the switching of propelling movement piece and first jack and second jack contact mode, hydro-cylinder, first jack and second jack all are connected with the controller.
The oil cylinder is a hydraulic oil cylinder, and the first jack and the second jack are both hydraulic jacks.
The second jack is in rolling connection with the base through a jack roller, and the jack roller moves along a sliding rail arranged on the base.
First jack set up first switching module, first switching module includes first recess, inside first face contact and the first rolling contact body subassembly of being equipped with of first recess, first face contact carries out vertical lift through first face contact body lifting mechanism, first rolling contact body subassembly carries out vertical lift through first rolling contact body subassembly lifting mechanism, first face contact body lifting mechanism, first rolling contact body subassembly lifting mechanism are connected with the controller.
The first surface contact body lifting mechanism and the first rolling contact body assembly lifting mechanism are both linear motors.
First rolling contact body subassembly include first contact body gyro wheel and second contact body gyro wheel, first face contact body and second contact body gyro wheel are arranged along second jack direction of motion in proper order.
The second jack set up the second and switch the module, the second switches the module and includes the second recess, inside second face contact and the second rolling contact body subassembly of being equipped with of second recess, the second face contact carries out vertical lift through second face contact body lifting mechanism, the second rolling contact body subassembly carries out vertical lift through second rolling contact body subassembly lifting mechanism, second face contact body lifting mechanism, second rolling contact body subassembly lifting mechanism are connected with the controller.
The second surface contact body lifting mechanism and the second rolling contact body assembly lifting mechanism are linear motors.
The second rolling contact body assembly comprises a third contact body roller and a fourth contact body roller, and the third contact body roller, the second surface contact body and the fourth contact body roller are sequentially arranged along the movement direction of the second jack.
A pushing method using the walking type pushing apparatus, the method comprising the steps of:
step S1: the controller controls the second jack to contact with the surface of the piece to be pushed and controls the first jack to contact with the piece to be pushed in a rolling manner;
step S2: the controller controls a piston rod of the oil cylinder to extend out;
step S3: the controller controls the second jack to be in rolling contact with the piece to be pushed, removes the surface contact of the second jack and the piece to be pushed after delaying the set time, controls the first jack to be in surface contact with the piece to be pushed, and removes the rolling contact of the first jack and the piece to be pushed after delaying the set time;
step S4: the controller controls the piston rod of the oil cylinder to compress.
Compared with the prior art, the invention has the following advantages:
(1) the pushing device is provided with a first jack, a second jack and an oil cylinder, wherein the first jack is fixedly connected with a base, the second jack is in rolling connection with the base, an outer cylinder barrel of the oil cylinder is fixedly connected with the first jack, a piston rod of the oil cylinder is fixedly connected with the second jack, the oil cylinder drives the second jack to move horizontally, the pushing piece to be pushed is horizontally moved along with the second jack through switching of contact modes of the pushing piece to be pushed, the pushing piece to be pushed does not need to be put down in the pushing process, the pushing action can be completed only by one-time jacking and one-time putting down, the damage to the pushing piece to be pushed due to vibration generated by jacking and putting down in the pushing process is avoided, and the reliability and safety of the pushing device are effectively improved; meanwhile, when the push piece is in contact or rolling contact with the top surfaces of the first jack and the second jack, the contact surfaces are switched according to the state in the working process, so that the abrasion of the contact surfaces can be effectively reduced, the service life is prolonged, and the working efficiency is improved.
(2) The oil cylinder is a hydraulic oil cylinder, and the first jack and the second jack are both hydraulic jacks, so that accurate control can be realized.
(3) The switching module comprises a groove, a surface contact body and a rolling contact body assembly are arranged in the groove, the surface contact body is vertically lifted through a surface contact body lifting mechanism, the rolling contact body assembly is vertically lifted through a rolling contact body assembly lifting mechanism, the surface contact body lifting mechanism and the rolling contact body assembly lifting mechanism are connected with the controller, the structure is simple, the implementation is easy, and the efficiency can be effectively improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a first switching module according to the present invention;
FIG. 3(a) is a schematic view of a first state of the pushing method of the present invention;
FIG. 3(b) is a schematic view of a first process of the incremental launching method of the present invention;
FIG. 3(c) is a schematic diagram of a second state of the pushing method of the present invention;
FIG. 3(d) is a schematic diagram of a second process of the incremental launching method of the present invention;
reference numerals:
1 is a member to be pushed; 2 is a first jack; 3 is a base; 4 is an oil cylinder; 5 is a second jack; 6 is a first switching module; 7 is a second switching module; 8 is a first groove; 9 is a first surface contact body; a first rolling contact body assembly is shown at 10.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Examples
The embodiment provides a walking pushing device, as shown in fig. 1, which includes a base 3, a first jack 2, a second jack 5 and an oil cylinder 4, the first jack 2 is fixedly connected to the base 3, the second jack 5 is connected to the base 3 in a rolling manner, an outer cylinder of the oil cylinder 4 is fixedly connected to the first jack 2, a piston rod of the oil cylinder 4 is fixedly connected to the second jack 5, a member to be pushed 1 is contacted above the first jack 2 and the second jack 5, the member to be pushed 1 is contacted with the first jack 2 in a surface contact or rolling contact manner, a contact member is contacted with the second jack 5 in a surface contact or rolling contact manner, the oil cylinder 4 drives the second jack 5 to move horizontally, the horizontal movement of the pushing member 1 along with the second jack 5 is realized through the switching of the contact mode of the pushing member 1 to the first jack 2 and the second jack 5, and the oil cylinder 4, the first jack 2 and the second jack 5 are all connected with the controller.
Specifically, the method comprises the following steps:
the oil cylinder 4 is a horizontal hydraulic oil cylinder, the first jack 2 and the second jack 5 are hydraulic jacks, the oil cylinder 4 and the jacks adopt hydraulic type to realize accurate control, the second jack 5 is in rolling connection with the base 3 through a jack roller, and the jack roller moves along a sliding rail arranged on the base 3.
As shown in fig. 2, the first jack 2 is provided with a first switching module 6, the first switching module 6 comprises a first groove 8, a first contact body 9 and a first rolling contact body assembly 10 are arranged in the first groove 8, the first contact body 9 is vertically lifted through the first contact body lifting mechanism, the first rolling contact body assembly 10 is vertically lifted through the first rolling contact body assembly lifting mechanism, and the first contact body lifting mechanism and the first rolling contact body assembly lifting mechanism are connected with a controller.
The second jack 5 is provided with a second switching module 7, the second switching module 7 comprises a second groove, a second surface contact body and a second rolling contact body assembly are arranged in the second groove, the second surface contact body is vertically lifted through a second surface contact body lifting mechanism, the second rolling contact body assembly is vertically lifted through a second rolling contact body assembly lifting mechanism, and the second surface contact body lifting mechanism and the second rolling contact body assembly lifting mechanism are connected with a controller.
The first face contact body lifting mechanism and the first rolling contact body assembly lifting mechanism are linear motors, the first face contact body lifting mechanism and the first rolling contact body assembly lifting mechanism are fixed to the bottom of the first groove 8, the second face contact body lifting mechanism and the second rolling contact body assembly lifting mechanism are linear motors, and the second face contact body lifting mechanism and the second rolling contact body assembly lifting mechanism are fixed to the bottom of the second groove.
The first rolling contact body assembly 10 includes a first contact body roller and a second contact body roller, the first surface contact body 9 and the second contact body roller are sequentially arranged along the movement direction of the second jack 5, the second rolling contact body assembly includes a third contact body roller and a fourth contact body roller, the third contact body roller, the second surface contact body and the fourth contact body roller are sequentially arranged along the movement direction of the second jack 5.
The first face contact body 9, the second face contact body, the first rolling contact body assembly 10 and the second rolling contact body assembly are all of a high density alloy steel material,
the embodiment also provides a pushing method using the walking type pushing equipment, which comprises the following steps:
step S1: as shown in fig. 3(a), the controller controls the second jack 5 to contact with the surface of the member to be pushed 1, and controls the first jack 2 to contact with the member to be pushed 1 in a rolling manner, and this state is referred to as a first state;
step S2: as shown in fig. 3(b), the controller controls the piston rod of the oil cylinder 4 to extend, and the second jack 5 drives the member to be pushed 1 to move, which is called a first process;
step S3: as shown in fig. 3(c), the controller controls the second jack 5 to be in rolling contact with the to-be-pushed member 1, and removes the surface contact between the second jack 5 and the to-be-pushed member 1 after the set time is delayed, the controller controls the first jack 2 to be in surface contact with the to-be-pushed member 1, and removes the rolling contact between the first jack 2 and the to-be-pushed member 1 after the set time is delayed, so that the switching of the contact mode without putting down the to-be-pushed member 1 is realized, the second jack 5 is in rolling contact with the to-be-pushed member 1, and the surface contact between the first jack 2 and the to-be-pushed member 1 is called as a second state, and the set time can be 10 s;
step S4: the controller controls the piston rod of the oil cylinder 4 to compress, the second jack 5 moves back to the original position, and the position of the member to be pushed 1 is unchanged at the moment, and the process is called as a second process.
Step S5: and repeating the steps S1-S4 until the member to be pushed 1 moves to the proper position.
Claims (8)
1. The utility model provides a walking top pushes away equipment, its characterized in that, includes base (3), first jack (2), second jack (5) and hydro-cylinder (4), first jack (2) and base (3) fixed connection, second jack (5) and base (3) rolling connection, the outer cylinder fixed connection first jack (2) of hydro-cylinder (4), piston rod fixed connection second jack (5) of hydro-cylinder (4), the top contact of first jack (2) and second jack (5) treats propelling movement piece (1), treat propelling movement piece (1) and first jack (2) surface contact or rolling contact, treat propelling movement piece (1) and second jack (5) surface contact or rolling contact, hydro-cylinder (4) drive second jack (5) horizontal migration, treat through treating the switching realization of propelling movement piece (1) and first jack (2) and second jack (5) contact mode and treat propelling movement piece (1) The oil cylinder (4), the first jack (2) and the second jack (5) are all connected with a controller along with the horizontal movement of the second jack (5);
the first jack (2) is provided with a first switching module (6), the first switching module (6) comprises a first groove (8), a first surface contact body (9) and a first rolling contact body assembly (10) are arranged in the first groove (8), the first surface contact body (9) is vertically lifted through a first surface contact body lifting mechanism, the first rolling contact body assembly (10) is vertically lifted through a first rolling contact body assembly lifting mechanism, and the first surface contact body lifting mechanism and the first rolling contact body assembly lifting mechanism are connected with a controller;
second jack (5) set up second and switch module (7), second switches module (7) and includes the second recess, inside second face contact and the second rolling contact body subassembly of being equipped with of second recess, the second face contact carries out vertical lift through second face contact body lifting mechanism, second rolling contact body subassembly carries out vertical lift through second rolling contact body subassembly lifting mechanism, second face contact body lifting mechanism, second rolling contact body subassembly lifting mechanism are connected with the controller.
2. The walking pushing apparatus of claim 1, wherein said cylinder (4) is a hydraulic cylinder, and said first jack (2) and said second jack (5) are hydraulic jacks.
3. Walking-type jacking equipment according to claim 1, wherein said second jack (5) is in rolling connection with said base (3) through a jack roller, said jack roller moving along a sliding rail provided on said base (3).
4. The walking jacking apparatus of claim 1, wherein said first surface contact body lifting mechanism and said first rolling contact body assembly lifting mechanism are linear motors.
5. A walking thruster apparatus as claimed in claim 1, wherein the first rolling contact body assembly (10) comprises a first contact body roller and a second contact body roller, the first surface contact body (9) and the second contact body roller being arranged in series along the direction of movement of the second jack (5).
6. The walking jacking apparatus of claim 1, wherein said second face contact body lifting mechanism and said second rolling contact body assembly lifting mechanism are linear motors.
7. A walking thruster apparatus as claimed in claim 1, wherein the second rolling contact body assembly comprises a third contact body roller and a fourth contact body roller, the third contact body roller, the second surface contact body and the fourth contact body roller being arranged in series along the direction of movement of the second jack (5).
8. A jacking method using a walking jacking device as claimed in any one of claims 1 to 7, said method comprising the steps of:
step S1: the controller controls the second jack (5) to be in surface contact with the piece (1) to be pushed, and controls the first jack (2) to be in rolling contact with the piece (1) to be pushed;
step S2: the controller controls a piston rod of the oil cylinder (4) to extend out;
step S3: the controller controls the second jack (5) to be in rolling contact with the piece (1) to be pushed, removes the surface contact of the second jack (5) and the piece (1) to be pushed after delaying the set time, controls the first jack (2) to be in surface contact with the piece (1) to be pushed, and removes the rolling contact of the first jack (2) and the piece (1) to be pushed after delaying the set time;
step S4: the controller controls the piston rod of the oil cylinder (4) to compress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011036303.0A CN112112081B (en) | 2020-09-27 | 2020-09-27 | Walking type pushing equipment and pushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011036303.0A CN112112081B (en) | 2020-09-27 | 2020-09-27 | Walking type pushing equipment and pushing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112112081A CN112112081A (en) | 2020-12-22 |
| CN112112081B true CN112112081B (en) | 2022-06-07 |
Family
ID=73797110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011036303.0A Active CN112112081B (en) | 2020-09-27 | 2020-09-27 | Walking type pushing equipment and pushing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112081B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924522A (en) * | 2014-04-14 | 2014-07-16 | 上海市机械施工集团有限公司 | Pushing device used for mounting elevated frames and bridges and pushing method of pushing device |
| CN103993560A (en) * | 2014-06-06 | 2014-08-20 | 上海隧道工程股份有限公司 | Walking type jacking construction method and device for large-span reinforced concrete combined beams |
| CN104030205A (en) * | 2014-06-05 | 2014-09-10 | 同济大学 | Walking type thrustor based on rolling and sliding friction |
| CN105350457A (en) * | 2015-11-13 | 2016-02-24 | 中铁大桥局集团第一工程有限公司 | Method for falling of steel trough beam in bridge walking type pushing construction |
| KR101609619B1 (en) * | 2015-12-14 | 2016-04-06 | 대영스틸산업주식회사 | Grip type wedge for the unbonded p.c strand fixing portion |
| CN108316123A (en) * | 2018-03-05 | 2018-07-24 | 济南城建集团有限公司 | Self-anchoring type suspension bridge system conversion method based on the passive stress of end bay |
| CN108342988A (en) * | 2018-02-09 | 2018-07-31 | 重庆三峡学院 | A kind of frictional slip energy-consumption shock-absorption device of multispan simply supported beam |
| CN207700059U (en) * | 2016-06-17 | 2018-08-07 | 贵州路桥集团有限公司 | Stride pushing tow deviation correcting device |
| JP2018168623A (en) * | 2017-03-30 | 2018-11-01 | 五洋建設株式会社 | Mobile scaffold |
| CN209039980U (en) * | 2018-08-21 | 2019-06-28 | 沈阳嘉奇液压科技有限公司 | A kind of bridge incremental launching machine |
| CN111395201A (en) * | 2020-04-23 | 2020-07-10 | 中交路桥建设有限公司 | Steel box girder pushing and pulling system and construction method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1168982A (en) * | 1965-10-19 | 1969-10-29 | Tecalemit Engineering | Vehicle Lift |
| RU2097476C1 (en) * | 1996-03-04 | 1997-11-27 | Геннадий Васильевич Ковров | Moving gear used to push span structures of bridge |
| CN103266566A (en) * | 2013-04-24 | 2013-08-28 | 中交武汉港湾工程设计研究院有限公司 | Walk-type continuous pushing system and construction method |
| CN105544411B (en) * | 2016-01-26 | 2017-03-29 | 中铁十局集团有限公司 | A kind of roller trolley device for integrating traveling and limit position adjusting function |
| CN109208478B (en) * | 2017-06-30 | 2021-03-19 | 中交第二航务工程局有限公司 | Integrated rapid construction method for prefabricated bridge |
| US10710858B2 (en) * | 2018-09-12 | 2020-07-14 | Actron Manufacturing, Inc. | Extractor for beverage baskets |
-
2020
- 2020-09-27 CN CN202011036303.0A patent/CN112112081B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924522A (en) * | 2014-04-14 | 2014-07-16 | 上海市机械施工集团有限公司 | Pushing device used for mounting elevated frames and bridges and pushing method of pushing device |
| CN104030205A (en) * | 2014-06-05 | 2014-09-10 | 同济大学 | Walking type thrustor based on rolling and sliding friction |
| CN103993560A (en) * | 2014-06-06 | 2014-08-20 | 上海隧道工程股份有限公司 | Walking type jacking construction method and device for large-span reinforced concrete combined beams |
| CN105350457A (en) * | 2015-11-13 | 2016-02-24 | 中铁大桥局集团第一工程有限公司 | Method for falling of steel trough beam in bridge walking type pushing construction |
| KR101609619B1 (en) * | 2015-12-14 | 2016-04-06 | 대영스틸산업주식회사 | Grip type wedge for the unbonded p.c strand fixing portion |
| CN207700059U (en) * | 2016-06-17 | 2018-08-07 | 贵州路桥集团有限公司 | Stride pushing tow deviation correcting device |
| JP2018168623A (en) * | 2017-03-30 | 2018-11-01 | 五洋建設株式会社 | Mobile scaffold |
| CN108342988A (en) * | 2018-02-09 | 2018-07-31 | 重庆三峡学院 | A kind of frictional slip energy-consumption shock-absorption device of multispan simply supported beam |
| CN108316123A (en) * | 2018-03-05 | 2018-07-24 | 济南城建集团有限公司 | Self-anchoring type suspension bridge system conversion method based on the passive stress of end bay |
| CN209039980U (en) * | 2018-08-21 | 2019-06-28 | 沈阳嘉奇液压科技有限公司 | A kind of bridge incremental launching machine |
| CN111395201A (en) * | 2020-04-23 | 2020-07-10 | 中交路桥建设有限公司 | Steel box girder pushing and pulling system and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112112081A (en) | 2020-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104990820A (en) | Electromagnetic multiaxial fatigue testing machine | |
| CN112112081B (en) | Walking type pushing equipment and pushing method | |
| CN102776843B (en) | Slippage equipment and slippage method thereof | |
| CN108589557B (en) | Construction method of walking trackless triangular hanging basket | |
| CN102031734B (en) | Intelligent control method of small-size hydraulic automatic tamping machine | |
| CN203515386U (en) | Power rat hole | |
| CN211256678U (en) | Supporting equipment for bridge construction of bridge engineering | |
| CN204024160U (en) | One cylinder many plates two-layer lift-sliding formula parking apparatus | |
| CN201756804U (en) | Self-climbing type lifting mechanism | |
| CN203960754U (en) | Bridge vertical shift hydraulic means | |
| CN211572656U (en) | Walking pushing equipment for steel truss girder | |
| CN210214751U (en) | Horizontal moving device for super-tonnage heavy object | |
| CN209006946U (en) | H profile steel end part assembly lift adjustment mechanism | |
| CN110092297B (en) | Building prefabricated component turning device | |
| CN202485421U (en) | Stepped elevation and translation mechanism | |
| CN221118269U (en) | Bridge moves roof beam device | |
| CN213951986U (en) | Jacking displacement mechanism and jacking displacement device | |
| CN212334499U (en) | Vehicle detection and maintenance platform | |
| CN220842511U (en) | Lifting cylinder assembly of double-side pushing equipment train unit car | |
| CN116002519A (en) | Trolley anchoring device of large port crane and use method | |
| CN209665404U (en) | The horizontal float device of multiposition crawl | |
| CN203541159U (en) | Elevator guide rail turning over device | |
| CN214823961U (en) | Buffer device for dismantling upper module of offshore platform by double-ship method | |
| CN215048402U (en) | Lifting buttress | |
| CN218147863U (en) | Crawler-type pushing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |