CN106049292A - Three-dimensional regulating and controlling walking type pushing equipment - Google Patents

Three-dimensional regulating and controlling walking type pushing equipment Download PDF

Info

Publication number
CN106049292A
CN106049292A CN201610603968.2A CN201610603968A CN106049292A CN 106049292 A CN106049292 A CN 106049292A CN 201610603968 A CN201610603968 A CN 201610603968A CN 106049292 A CN106049292 A CN 106049292A
Authority
CN
China
Prior art keywords
oil cylinder
sliding
cylinder
jacking
correction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610603968.2A
Other languages
Chinese (zh)
Inventor
李海涛
施向华
付小冬
陈小梁
龚国庆
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.)
WUHAN KATTOR INDUSTRY Co Ltd
Original Assignee
WUHAN KATTOR INDUSTRY 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 WUHAN KATTOR INDUSTRY Co Ltd filed Critical WUHAN KATTOR INDUSTRY Co Ltd
Priority to CN201610603968.2A priority Critical patent/CN106049292A/en
Publication of CN106049292A publication Critical patent/CN106049292A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention discloses three-dimensional regulating and controlling walking type pushing equipment which comprises a PLC main control computer, a hydraulic pump station and multiple sets of three-dimensional walking type pushing machines. Each walking type pushing machine comprises a sliding base, a sliding box, a jacking oil cylinder, a horizontal pushing oil cylinder and a correcting oil cylinder. The sliding boxes can slide on the sliding bases, each horizontal pushing oil cylinder is arranged at one end of the corresponding sliding base, a piston in each horizontal pushing oil cylinder is connected with one end of the corresponding sliding box through a horizontal pushing pin shaft, a side plate on one face of each sliding box is connected with a cylinder body of the corresponding correcting oil cylinder, a piston of each correcting oil cylinder faces the interior of the corresponding sliding box, a correcting lug plate is arranged at the head of each piston, the jacking oil cylinders capable of sliding along the horizontal plane are arranged in the sliding boxes, and the jacking lug plates are arranged on the sides, close to the correcting oil cylinders, of cylinder bodies of the jacking oil cylinders. According to the equipment, a steel beam can be overall and precisely jacked to the designed position, the correcting action can be achieved in the jacking process, no slideway beam is needed, and the equipment is small, ingenious and flexible, convenient to use and effective.

Description

A kind of three-dimensional regulation and control walking incremental launching device
Technical field
The invention belongs to equipment for bridge construction field, particularly relate to a kind of three-dimensional regulation and control walking incremental launching device.
Background technology
The construction technology of bridge is varied, at present, in the construction technology of girder steel, because the complexity in place, as across Highway, across subway railway, across high ferro, across have navigation require harbour and have safety traffic require thoroughfare etc., by this Planting the impact of complex working condition, for ensureing the safety of construction, need to take after the assembled good girder steel in the place of safety, integral pushing moves To the position designed.For the process moved integrally, the most dilatory method of present construction technology, i.e. below girder steel Disposing track, side arranges slide block in orbit, arrives with hoist engine or continuous jack longitudinal pull girder steel and specifies position, laterally Arrange that jack carries out correction and adjusts.This construction equipment is easily generated " leapfroging " phenomenon, being moved through at girder steel in heave Needing certain longitudinal gradient in journey, overall dilatory inertia is big, it is desirable to the more difficult control in position of stopping, potential safety hazard is big.
Summary of the invention
In place of overcoming above-mentioned the deficiencies in the prior art, the present invention provides a kind of three-dimensional regulation and control walking incremental launching device, This equipment can step by step by overall for girder steel accurately pushing tow to the position designed, moving of correction can be realized during pushing tow Make, it is not necessary to slipway beam, equipment is small and exquisite flexibly, easy to use and effective.
For achieving the above object, the present invention adopts the following technical scheme that a kind of three-dimensional regulation and control walking incremental launching device, including PLC main control computer, hydraulic power unit, the three-dimensional walking pusher of many groups, described three-dimensional walking pusher includes sliding base, sliding Casing, jacking cylinder, horizontal sliding oil cylinder and correction oil cylinder, described sliding casing can slide on sliding base, described horizontal sliding oil cylinder Being arranged on sliding base one end, the piston of this horizontal sliding oil cylinder is connected by horizontal sliding bearing pin with one end of sliding casing, described sliding One side plate of casing is connected with the cylinder body of correction oil cylinder, and the piston of described correction oil cylinder is towards in sliding casing and piston crown It is provided with correction otic placode, is provided with, in described sliding casing, the jacking cylinder that can slide along the horizontal plane, the cylinder body of this jacking cylinder leans on The side of nearly correction oil cylinder is provided with jacking ear plate, and described jacking ear plate is connected with correction otic placode, described jacking cylinder, horizontal sliding oil cylinder Being respectively equipped with displacement transducer with on correction oil cylinder, institute's displacement sensors is wired to PLC main control computer, described PLC Main control computer is wired to hydraulic power unit, described hydraulic power unit by oil pipe respectively with the top often organizing three-dimensional stride pusher Oil-lifting jar, horizontal sliding oil cylinder and correction oil cylinder connect, and described oil pipe is designed with the electromagnetic valve being connected with PLC main control computer.
In technique scheme, the coefficient of kinetic friction between sliding base and sliding casing is less than or equal to 0.10.
In technique scheme, the coefficient of friction between described sliding casing and jacking cylinder is less than or equal to 0.10.
In technique scheme, the deviation of described each displacement transducer is ± 1mm.
In technique scheme, described jacking cylinder and correction oil cylinder being respectively equipped with pressure transducer, each pressure passes Sensor is connected to PLC main control computer by wire or optical fiber.
In technique scheme, described hydraulic power unit 2 comprises low pressure oil way and high-pressure oil passage, and described low pressure oil way connects To horizontal sliding oil cylinder, described high-pressure oil passage divides two-way to be connected to rectify a deviation oil cylinder and jacking cylinder, and described low pressure oil way is provided with low pressure Control valve group, described high-pressure oil passage is respectively equipped with and is connected to the correction high pressure control valve group of correction oil cylinder and is connected to jacking oil The jacking high pressure control valve group of cylinder, low-pressure control valve group, correction high pressure control valve group and jacking high pressure control valve group pass through wire Or optical fiber is connected to PLC main control computer.
In technique scheme, the cylinder body of described correction oil cylinder is threaded connection with the side plate of sliding casing.
In technique scheme, described jacking ear plate is connected by otic placode bearing pin with correction otic placode.
The invention has the beneficial effects as follows: this equipment can realize correction action during pushing tow, it is not necessary to slipway beam, and equipment is little Skilful flexible, it is desirable to the position of stopping is the most controlled, each PLC main control computer interconnects, and any one PLC main control computer can be as master Machine, other PLC main control computer is subsidiary engine, and main frame can control other subsidiary engine, it is achieved remote control;Horizontal sliding oil cylinder, jacking cylinder With correction oil cylinder installation position displacement sensor and pressure transducer, receive each group of three-dimensional walking pusher by PLC main control computer Pressure with displacement data, by closed loop systems, make the level of each group of three-dimensional walking pusher push, vertical jacking and Laterally correction ensures to synchronize, and synchronous error is adjustable, easy to adjust, and precision is high;This equipment pushing tow process is typically rarely employed correction Or impracticable correction, greatly reduce the pushing tow time, cost-effective.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is hydraulic power unit and the schematic diagram of four groups of three-dimensional walking pusher connections of the present invention.
The use schematic diagram of Fig. 4 present invention.
Wherein: 1. PLC main control computer, 2. hydraulic power unit, 3. sliding base, 4. sliding casing, 5. jacking cylinder, 6. horizontal sliding Oil cylinder, 7. correction oil cylinder, 8. correction otic placode, 9. jacking ear plate, 10. jacking displacement transducer, 11. horizontal sliding displacement transducers, 12. correction displacement transducers, 13. oil pipes, 14. otic placode bearing pins, 15. bearing beams, 16. cushion blocks, 17. girder steels.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described.
A kind of three-dimensional regulation and control walking incremental launching device as shown in Figure 1, Figure 2 and Figure 3, including PLC main control computer 1, hydraulic pump Stand 2, the three-dimensional walking pusher of many groups, described three-dimensional walking pusher includes sliding base 3, sliding casing 4, jacking cylinder 5, horizontal sliding oil cylinder 6 and correction oil cylinder 7, described sliding casing 4 can slide on sliding base 3, and described horizontal sliding oil cylinder 6 is arranged on cunning Moving base 3 one end, the piston of this horizontal sliding oil cylinder 6 is connected by horizontal sliding bearing pin with one end of sliding casing 4, described sliding casing 4 A side plate is connected with the cylinder body of correction oil cylinder 7, the piston of described correction oil cylinder 7 is interior and piston crown towards sliding casing 4 It is provided with correction otic placode 8, in described sliding casing 4, is provided with the jacking cylinder 5 that can slide along the horizontal plane, the cylinder body of this jacking cylinder 5 The upper side near correction oil cylinder 7 is provided with jacking ear plate 9, and described jacking ear plate 9 is connected with correction otic placode 8, described jacking cylinder 5, being respectively equipped with jacking displacement transducer 10, horizontal sliding displacement transducer 11 on horizontal sliding oil cylinder 6 and correction oil cylinder 7, correction displacement passes Sensor 12, each displacement transducer is wired to PLC main control computer 1, and described PLC main control computer 1 is wired to hydraulic pressure Pumping plant 2, described hydraulic power unit 2 by oil pipe 13 respectively with often organize the three-dimensional jacking cylinder 5 of walking pusher, horizontal sliding oil cylinder 6 Connecting with correction oil cylinder 7, described oil pipe is designed with the electromagnetic valve (not shown) being connected with PLC main control computer 1, electromagnetic valve is arranged on In hydraulic power unit 2.
In technique scheme, the coefficient of kinetic friction between sliding base 3 and sliding casing 4 is less than or equal to 0.10.This In embodiment, sliding base 3 surface uses corronil plate, and sliding casing 4 be high intensity oil-free lubrication plate, sliding casing 4 and The bottom surface of sliding base 3 contact is provided with MGE plate.
In technique scheme, the coefficient of friction between described sliding casing 4 and jacking cylinder 5 is less than or equal to 0.10. Jacking cylinder 5 bottom surface connects high intensity oil-free lubrication plate.
In technique scheme, the deviation of each displacement transducer is ± 1mm.
In technique scheme, the oil inlet pipe of described jacking cylinder 5 and correction oil cylinder 7 is respectively equipped with pressure transducer (not shown), each pressure transducer is wired to PLC main control computer 1.Pressure transducer is set, by PLC main control computer 1 Pressure data it is known that each jacking cylinder 5 and the input pressure size of correction oil cylinder 7, thus judge jacking cylinder 5 is whether Have unsettled, can be adjusted in time.When pressure transducer records result more than 5MPa, it can be determined that go out jacking cylinder 5 Do not have unsettled with correction oil cylinder 7, otherwise, then explanation jacking cylinder 5 and correction oil cylinder 7 are unsettled.
In technique scheme, described hydraulic power unit 2 comprises low pressure oil way and high-pressure oil passage, and described low pressure oil way connects To horizontal sliding oil cylinder, described high-pressure oil passage divides two-way to be connected to rectify a deviation oil cylinder 7 and jacking cylinder 5, and described low pressure oil way is provided with low Pressure control valve group, described high-pressure oil passage is respectively equipped with and is connected to the correction high pressure control valve group of correction oil cylinder and is connected to jacking The jacking high pressure control valve group of oil cylinder, described low-pressure control valve group, correction high pressure control valve group and jacking high pressure control valve group are led to Cross wire or optical fiber is connected to PLC main control computer.
In technique scheme, the cylinder body of described correction oil cylinder 7 is threaded connection with the side plate of sliding casing 4.
In technique scheme, described jacking ear plate 9 is connected by otic placode bearing pin 14 with correction otic placode 8.
As shown in Figure 4, when using the equipment of the present invention, need to coordinate bearing beam 15 and cushion block 16 to use, bearing beam is placed on On the piston of jacking cylinder, cushion block being placed on girder steel 17 times, these equipment of organizing are used in combination, more between each PLC main control computer 1 mutually Connecting, any one PLC main control computer 1 can serve as main frame and use, it is achieved remote synchronization manipulates.
As a example by this equipment single, jacking cylinder 5 is risen by PLC main control computer 1 by hydraulic power unit 2, thus by girder steel 17 Jack-up, the piston of horizontal sliding oil cylinder 6 pushed ahead by PLC main control computer 1 again by hydraulic power unit 2, and now girder steel 17 moves, if There is lateral deviation in girder steel in moving, PLC main control computer 1 controls the lateral displacement of girder steel 17, collateral security steel by correction oil cylinder 5 Beam 17 moves accurately, after girder steel 17 moves into place, and the piston landing of jacking cylinder 5, make girder steel 17 fall on cushion block 16, flat The piston of push oil cylinder 6 also bounces back, and completes the pushing tow work of a stroke.In this equipment running process, by each displacement sensing Device detects the work shift of each oil cylinder, and when exceeding predetermined displacement, sensor transmits a signal to PLC main control computer 1, this Time PLC main control computer 1 control the flow of corresponding oil cylinder by the opening degree of electromagnetic valve thus realize Synchronization Control.This synchronization control Mode processed is closed loop control.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, Any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, All should contain within protection scope of the present invention.

Claims (8)

1. a three-dimensional regulation and control walking incremental launching device, is characterized in that: include PLC main control computer, hydraulic power unit, the three-dimensional stride of many groups Formula pusher, described three-dimensional walking pusher includes sliding base, sliding casing, jacking cylinder, horizontal sliding oil cylinder and correction oil Cylinder, described sliding casing can slide on sliding base, and described horizontal sliding oil cylinder is arranged on sliding base one end, this horizontal sliding oil cylinder Piston is connected by horizontal sliding bearing pin with one end of sliding casing, and a side plate of described sliding casing connects with the cylinder body of correction oil cylinder Connecing, the piston of described correction oil cylinder, towards in sliding casing and piston crown is provided with correction otic placode, is provided with in described sliding casing The jacking cylinder that can slide along the horizontal plane, on the cylinder body of this jacking cylinder, the side near correction oil cylinder is provided with jacking ear plate, institute State jacking ear plate to be connected with correction otic placode, described jacking cylinder, horizontal sliding oil cylinder and correction oil cylinder be respectively equipped with displacement transducer, Institute's displacement sensors is wired to PLC main control computer, and described PLC main control computer is wired to hydraulic power unit, institute State hydraulic power unit by oil pipe respectively with often organize the three-dimensional jacking cylinder of stride pusher, horizontal sliding oil cylinder and correction oil cylinder and be connected, The electromagnetic valve being connected with PLC main control computer it is designed with on described oil pipe.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: sliding base and sliding case The coefficient of kinetic friction between body is less than or equal to 0.10.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: described sliding base and top Coefficient of friction between oil-lifting jar is less than or equal to 0.10.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: described each displacement transducer Deviation be ± 1mm.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: described jacking cylinder and entangling Partially being respectively equipped with pressure transducer on oil cylinder, each pressure transducer is wired to PLC main control computer.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: described hydraulic power unit comprises Low pressure oil way and high-pressure oil passage, described low pressure oil way is connected to horizontal sliding oil cylinder, and described high-pressure oil passage divides two-way to be connected to correction oil Cylinder and jacking cylinder, described low pressure oil way is provided with low-pressure control valve group, described high-pressure oil passage is respectively equipped with and is connected to correction The correction high pressure control valve group of oil cylinder and the jacking high pressure control valve group being connected to jacking cylinder, low-pressure control valve group, correction height Pressure control valve group and jacking high pressure control valve group are connected to PLC main control computer by wire or optical fiber.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: the cylinder of described correction oil cylinder Body is threaded connection with the side plate of sliding casing.
A kind of three-dimensional regulation and control walking incremental launching device the most according to claim 1, is characterized in that: described jacking ear plate with entangle Otic placode partially is connected by otic placode bearing pin.
CN201610603968.2A 2016-07-28 2016-07-28 Three-dimensional regulating and controlling walking type pushing equipment Pending CN106049292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610603968.2A CN106049292A (en) 2016-07-28 2016-07-28 Three-dimensional regulating and controlling walking type pushing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610603968.2A CN106049292A (en) 2016-07-28 2016-07-28 Three-dimensional regulating and controlling walking type pushing equipment

Publications (1)

Publication Number Publication Date
CN106049292A true CN106049292A (en) 2016-10-26

Family

ID=57195657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610603968.2A Pending CN106049292A (en) 2016-07-28 2016-07-28 Three-dimensional regulating and controlling walking type pushing equipment

Country Status (1)

Country Link
CN (1) CN106049292A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107841957A (en) * 2017-12-25 2018-03-27 中铁二局第五工程有限公司 A kind of large-tonnage steel box beam thrustor, pushing tow system and pushing method
CN108004934A (en) * 2017-12-25 2018-05-08 宋振辉 Safety falls the multidirectional correction hydraulic device of beam self-locking and its application method
CN109267495A (en) * 2018-11-22 2019-01-25 上海洪铺钢结构工程有限公司 A kind of jacking device
CN109989353A (en) * 2019-04-28 2019-07-09 开封市大方预应力有限公司 A kind of bridge displacement adjustment device
CN112027973A (en) * 2020-08-19 2020-12-04 武汉力地液压设备有限公司 Three-dimensional hydraulic system
CN112726412A (en) * 2020-12-28 2021-04-30 山东大学 Precise three-dimensional positioning device and method for steel box girder hoisting closure
CN118635868A (en) * 2024-08-12 2024-09-13 成都煜恒科技有限公司 Control method of heavy three-way fine adjustment equipment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
RU2498004C1 (en) * 2012-05-31 2013-11-10 Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" Launch to transport span blocks
CN103952977A (en) * 2014-04-14 2014-07-30 上海市机械施工集团有限公司 Combined pushing device and synchronous pushing method for mounting elevated road and bridge
CN204139065U (en) * 2014-07-18 2015-02-04 中建钢构有限公司 A kind of modified walking incremental launching device
CN204780607U (en) * 2015-05-14 2015-11-18 柳州泰姆预应力机械有限公司 Stride thrustor
CN105507161A (en) * 2016-01-18 2016-04-20 柳州泰姆预应力机械有限公司 Walking pushing equipment with deviation rectifying function
CN205907606U (en) * 2016-07-28 2017-01-25 武汉卡特工业股份有限公司 Three -dimensional regulation and control walking pushing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2498004C1 (en) * 2012-05-31 2013-11-10 Открытое акционерное общество по проектированию строительства мостов "Институт Гипростроймост" Launch to transport span blocks
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
CN103952977A (en) * 2014-04-14 2014-07-30 上海市机械施工集团有限公司 Combined pushing device and synchronous pushing method for mounting elevated road and bridge
CN204139065U (en) * 2014-07-18 2015-02-04 中建钢构有限公司 A kind of modified walking incremental launching device
CN204780607U (en) * 2015-05-14 2015-11-18 柳州泰姆预应力机械有限公司 Stride thrustor
CN105507161A (en) * 2016-01-18 2016-04-20 柳州泰姆预应力机械有限公司 Walking pushing equipment with deviation rectifying function
CN205907606U (en) * 2016-07-28 2017-01-25 武汉卡特工业股份有限公司 Three -dimensional regulation and control walking pushing device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107841957A (en) * 2017-12-25 2018-03-27 中铁二局第五工程有限公司 A kind of large-tonnage steel box beam thrustor, pushing tow system and pushing method
CN108004934A (en) * 2017-12-25 2018-05-08 宋振辉 Safety falls the multidirectional correction hydraulic device of beam self-locking and its application method
CN109267495A (en) * 2018-11-22 2019-01-25 上海洪铺钢结构工程有限公司 A kind of jacking device
CN109989353A (en) * 2019-04-28 2019-07-09 开封市大方预应力有限公司 A kind of bridge displacement adjustment device
CN112027973A (en) * 2020-08-19 2020-12-04 武汉力地液压设备有限公司 Three-dimensional hydraulic system
CN112027973B (en) * 2020-08-19 2022-04-29 武汉力地液压设备有限公司 Three-dimensional hydraulic system
CN112726412A (en) * 2020-12-28 2021-04-30 山东大学 Precise three-dimensional positioning device and method for steel box girder hoisting closure
CN118635868A (en) * 2024-08-12 2024-09-13 成都煜恒科技有限公司 Control method of heavy three-way fine adjustment equipment
CN118635868B (en) * 2024-08-12 2024-10-22 成都煜恒科技有限公司 Control method of heavy three-way fine adjustment equipment

Similar Documents

Publication Publication Date Title
CN106049292A (en) Three-dimensional regulating and controlling walking type pushing equipment
CN205907606U (en) Three -dimensional regulation and control walking pushing device
CN209669706U (en) A kind of bridge construction three-dimensional synchronous push equipment
CN101887273B (en) Automatic height-adjusting test device of coal mining machine roller and control method
CN103266566A (en) Walk-type continuous pushing system and construction method
CN106351134B (en) Existing line box culvert is worn under one kind and synchronizes jacking system and jacking method
CN103822831B (en) A kind of rigidity following loading framed structure
CN105082593B (en) Driven by Hydraulic Cylinder machinery multi-connecting rod servo press machine
CN204958281U (en) Automobile body that adopts gas -liquid linkage changes machine of lifting of hanging
CN205907611U (en) Synchronous heavily loaded walking pushing device of intelligence
CN102728623A (en) Hydraulic control system for roll balance
CN102401749B (en) Testing device of underground pressure pipeline
CN101985151B (en) Bidirectional couple four-corner levelling control system
CN206752185U (en) A kind of automatic cloth-pressing device of numerical control cutting
CN102730608B (en) There is the ground handling trolley of crane
CN205907612U (en) Steel longeron walking thrustor
CN2860682Y (en) Middle tank car four-cylinder synchronization hydraulic lifting motion
CN206805303U (en) Formwork elevation measuring adjusting means
CN105970834B (en) A kind of intelligent synchronization heavy duty walking incremental launching device
CN103117164B (en) The digital coil shaper of superhigh precision on a large scale
CN105134197A (en) Simulation experiment device and method for slippage between reservoir pressure change inducing layers
CN205151654U (en) Emergency braking's panel automatic lifting device
CN2936803Y (en) Locomotive wheel set mounting machine of automatic computer controller
CN207072130U (en) A kind of hydraulic press with stroke detection mechanism
CN209412707U (en) Curve bridge girder walking dynamic pushing tow system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20161026