CN108842622A - U-turn construction method is rotated integrally on a kind of Bridge Erector bridge - Google Patents
U-turn construction method is rotated integrally on a kind of Bridge Erector bridge Download PDFInfo
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- CN108842622A CN108842622A CN201810522739.7A CN201810522739A CN108842622A CN 108842622 A CN108842622 A CN 108842622A CN 201810522739 A CN201810522739 A CN 201810522739A CN 108842622 A CN108842622 A CN 108842622A
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- Prior art keywords
- bridge erector
- bridge
- vehicle
- rotation
- nose girder
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Classifications
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- 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
Abstract
U-turn construction method is rotated integrally the invention belongs to technical field of bridge construction, on specifically a kind of Bridge Erector bridge.It solves the problems, such as Bridge Erector steering, includes the following steps：S100~selection Bridge Erector rotation position, the position of Bridge Erector rotation are adjacent box beam seam crossing；S200~support top Bridge Erector；S300~rotating device is assembled；S400~assembly nose girder support frame；S500~weighing levels Bridge Erector；S600~connection drive system and preliminary operation；S700~rotation u-turn；Speed and rotation angle are set, and slowly rotation, by the way that rotation sensor reading data on the spinning device are arranged, determines rotation to 180 degree stopping, rotational time is greater than 15 min up to stopping after 180 degree to Bridge Erector under the drive of rotating mechanism；S800~Bridge Erector dropping place.The configuration of the present invention is simple, assembly is convenient, and the u-turn used time is few, and precision is higher, safely controllable.
Description
Technical field
U-turn construction method is rotated integrally the invention belongs to technical field of bridge construction, on specifically a kind of Bridge Erector bridge.
Background technique
For equilibrium set a roof beam in place progress and consider set a roof beam in place apart from the problems such as, Liang Chang is generally disposed at bid section center, elder generation's frame when setting a roof beam in place
If uplink direction or downlink direction, other direction is set up again after Bridge Erector is driven into the u-turn of beam field opening again later
Box beam.Then at least need to build connection ramp according to the mode that tradition drives into Liang Chang u-turn, cost is huge.
It is provided with cross traveling trolley on general Bridge Erector and 1, No. 2 purlin vehicle, Bridge Erector lower part are mounted on front leg strut, middle vehicle
And in rear car.If can use Bridge Erector itself makes rotation u-turn, working efficiency can be not only improved, engineering can be also saved
Expense.
Summary of the invention
The present invention provides to solve the problems, such as that Bridge Erector turns to and rotates integrally u-turn constructing device on a kind of Bridge Erector bridge
And method.
The present invention takes following technical scheme：U-turn construction method, including following step are rotated integrally on a kind of Bridge Erector bridge
Suddenly：
S100~selection Bridge Erector rotation position, the position of Bridge Erector rotation are adjacent box beam seam crossing；
S200~support top Bridge Erector, beam car back carries on the back Bridge Erector reach Bridge Erector rotation, with vehicle stress point in infrared detection with
Hard point longitudinal and transverse range deviation in beam face makes it be no more than 1cm, integral lifting beam car, until front outrigger for bridge girder erection machine and rear car with
From until reaching 120cm, front leg strut steel pier support pad, rear car sleeper and rail support pad, beam car back 1# carry beam on the back and sail beam identity distance
Bridge Erector out；
S300~rotating device is assembled；
S400~assembly nose girder support frame；
S500~weighing levels Bridge Erector；
S600~connection drive system and preliminary operation；
S700~rotation u-turn；Speed and rotation angle are set, and slowly rotation is straight under the drive of rotating mechanism for Bridge Erector
Stop after to 180 degree, by the way that rotation sensor reading data on the spinning device are arranged, determines that rotation to 180 degree stops, rotation
Turn the time greater than 15 min；
S800~Bridge Erector dropping place.
In the step S300, rotating device includes bracket, bottom bracket and swivel bearing, and bottom bracket is set at four angles
It is equipped with fixation hole, swivel bearing is installed in the middle part of bottom bracket, bracket is installed on the upside of swivel bearing, the setting of bracket two sides is useful
The middle vehicle fixing end of vehicle in fixation, No. 1 purlin vehicle of Bridge Erector hangs bottom bracket in two panels box beam seam crossing, wherein 4 fixations
Hole is overlapped with box beam lifting hole(eyelet), and hanging beam sunpender is respectively penetrated in fixation hole, and 4 screw jack are straight in the jacking of bottom bracket quadrangle respectively
Reach horizontality to subiculum top of support, 80X80cm gravity flowing levelling mortar is perfused respectively around 4 fixation holes, thickness is not less than
5cm is bolted between swivel bearing and bracket again with No. 1 purlin vehicle lifting swivel bearing, bracket and middle vehicle, in
It is bolted between vehicle and bracket, the middle vehicle, bracket and the swivel bearing that unify finally is hung to subiculum with No. 1 purlin vehicle
It on frame, is bolted between swivel bearing and bottom bracket, removes beam car, drop Bridge Erector support, support middle vehicle and nose girder
Frame is interlockingly connected, and nose girder support frame is inverted triangular structure, and nose girder support frame lower part is fixed in bracket, nose girder support frame top
Both ends are fixed with Bridge Erector nose girder, and Bridge Erector is in front leg strut, middle vehicle and rear car supported at three point state at this time.
In the step S400, measure nose girder between bracket at a distance from, front leg strut and rear height are adjusted, with the purlin 1#
Vehicle electric block spelling nose girder support frame is simultaneously bolted fastening with nose girder gusset piece.
The step S500 includes the following steps：
S501, side leveling, Bridge Erector transverse structure are symmetrically, to be laterally substantially at equilibrium state, pass through No. 1 purlin vehicle, No. 2
Cross traveling trolley left and right displacement, that is, levelling on the vehicle of purlin, after leveling, cross traveling trolley is fixed.
S502, front truck weighing leveling, Bridge Erector vertical structure be it is asymmetric, need to have been calculated according to distribution of weight level work
The off-position point of No. 1 purlin vehicle, No. 2 purlin vehicles, respectively sets a pressure sensor in two nose girder support frame lower ends, passes through mobile two and rises
Weight purlin truck position is leveled, and when leveling, first uses jack raising front leg strut, then remove a section steel buttress, later again slowly under
Jack is put, hanging 2~5 cm of front leg strut is made, reads sensing data.
S503, rear car weighing leveling, rear car leveling is identical as front truck leveling method, and rear support leg is vacantly not more than when weighing
5cm。
S504, after leveling weighing, No. 1 purlin vehicle of forward and backward movement, No. 2 purlins truck position keep forward and backward nose girder support frame counter-force poor
Within the scope of stationary value, that is, it is less than 500kN；Lateral accurate leveling is moved left and right using cross traveling trolley, and subiculum top of support is made to incline
Angle transducer X axis value is less than 2mm, bundlees No. 1 purlin vehicle, No. 2 purlin vehicles and nose girder after Bridge Erector leveling and fastens, No. 1 purlin vehicle, 2
Locking, cross traveling trolley positioning pin are lockked and are welded before and after the vehicle traveling wheel group rail clamping device of number purlin.
The step S600 clears up the barrier in rotating range, measures live wind speed, and variable-frequency electric is arranged according to wind speed
Machine running frequency, frequency is set as 20Hz when 5.5 ~ 7.0m/s, and frequency is set as 5Hz when 2.5 ~ 3.0m/s, is rotated clockwise 5
Degree, 10 degree, rotate counterclockwise 5 degree, 10 degree.
The step S800, Bridge Erector are rotated in place, and front leg strut and rear car respectively use two bottle gouards moved by hands and beam face pre-buried
Reinforcing bar connection tenses, firm with sleeper and steel pier support pad respectively by front leg strut and rear car raising under jack cooperation, it is ensured that in
Vehicle is separated with nose girder, removes lower joist and bearing is connected bolt, with coaster rotating device is slid out Bridge Erector respectively, installed
Middle vehicle traveling wheel group is simultaneously driven to position of setting a roof beam in place, and is removed front leg strut and rear car buttress and wind cable, is made Bridge Erector nose girder and middle vehicle
It is interlockingly connected, until Bridge Erector is in the state of setting a roof beam in place of supported at three point.
Compared with prior art, the present invention is not required to build ramp, is also not required to dismantling Bridge Erector, rotates u-turn dress using bridge floor
It sets and completes u-turn on bridge.And it has the advantages that：
1, structure is simple：Used rotating mechanism is divided into three parts, i.e., upper and lower bracket and swivel bearing, and is respectively independent
Monoblock type.
2, assembled convenient：Without being assisted with large scale equipment during upender is assembled, it is using Bridge Erector itself function
It is achievable.
3, the u-turn used time is few：Upender rotation and balance mechanism structure are simple, and assembled workload is small；Spinning movement is electricity
Machine driving is continuously run, and when u-turn is not required to coordinate other processes.
4, precision is higher：PLC frequency control, Bridge Erector rotation u-turn one-key operation, Bridge Erector position is almost after u-turn
Zero deflection, much larger than precision again assembled after dismantling.
5, safely controllable：There are sensitive sensor and real time monitoring dedicated program to control Bridge Erector when u-turn.
Detailed description of the invention
Fig. 1 is rotating device elevation；
Fig. 2 is bracket structural schematic diagram；
Fig. 3 is bottom bracket structural schematic diagram；
Fig. 4 is middle vehicle sectional schematic diagram before installation nose girder；
Fig. 5 is middle vehicle sectional schematic diagram after installation nose girder.
1- bracket in figure, 2- bottom bracket, 3- swivel bearing, 4- fixation hole, vehicle fixing end in 5-, vehicle in 6-, 7- rotation
Sensor, 8- obliquity sensor, 9- nose girder support frame, 10- pressure sensor, 11- nose girder.
Specific embodiment
U-turn construction method is rotated integrally on a kind of Bridge Erector bridge, is included the following steps：
S100~selection Bridge Erector rotation position, because very big propulsive thrust will be generated when Bridge Erector rotation, therefore under rotating device
Bracket must be secured to resist propulsive thrust bring shear stress on bridge floor, and the position of Bridge Erector rotation must select adjacent box beam to connect
At seam, shearing is resisted using the sunpender being inserted into box beam lifting hole(eyelet).
S200~support top Bridge Erector, beam car back carries Bridge Erector on the back and reaches Bridge Erector rotation, with vehicle stress in infrared detection
Point and the longitudinal and transverse range deviation of beam face hard point make it be no more than 1cm, integral lifting beam car, until front outrigger for bridge girder erection machine is with after
From until reaching 120cm, front leg strut steel pier support pad, rear car sleeper and rail support pad, beam car back 1# are carried on the back for vehicle and beam identity distance
Beam is driven out to Bridge Erector.
S300~rotating device is assembled：
In the step S300, rotating device includes bracket 1, bottom bracket 2 and swivel bearing 3, and bottom bracket is set at 2 four angles
It is equipped with fixation hole 4, swivel bearing 3 is installed in the middle part of bottom bracket 2, bracket 1 is installed on the upside of swivel bearing 3,1 two sides of bracket are set
It is equipped with the middle vehicle fixing end 5 for vehicle in fixation, No. 1 purlin vehicle of Bridge Erector hangs bottom bracket 2 in two panels box beam seam crossing, wherein
4 fixation holes 4 are overlapped with box beam lifting hole(eyelet), hanging beam sunpender are respectively penetrated in fixation hole 4,4 screw jack are respectively in bottom bracket
Quadrangle jacking reaches horizontality up to subiculum top of support, and 80X80cm gravity flowing levelling mortar is perfused respectively around 4 fixation holes 4, thick
Degree is not less than 5cm, swivel bearing 3, bracket 1 and middle vehicle 6 is lifted with No. 1 purlin vehicle again, between swivel bearing 3 and bracket 1
It is bolted, is bolted between middle vehicle 6 and bracket 1, finally with No. 1 purlin vehicle by the middle vehicle 6 to unify, bracket 1
It is hung on bottom bracket 2 with swivel bearing 3, is bolted between swivel bearing 3 and bottom bracket 2, remove beam car, drop Bridge Erector
Support, makes middle vehicle 6 be interlockingly connected with nose girder support frame 9, and nose girder support frame 9 is inverted triangular structure, and 9 lower part of nose girder support frame is fixed
In bracket 1,9 both upper ends thereof of nose girder support frame and Bridge Erector nose girder 11 are fixed, at this time Bridge Erector be in front leg strut, middle vehicle and
Rear car supported at three point state.
S400~assembly nose girder support frame；Nose girder is welded with H profile steel.It measures between nose girder mark position and bracket
Distance adjusts front leg strut and rear height according to the data obtained, with No. 1 purlin vehicle electric block spelling nose girder support frame and and nose girder
Gusset piece is fastened with M32 bolt-connection.
S500~weighing levels Bridge Erector, includes the following steps：
S501, side leveling, Bridge Erector transverse structure are symmetrically, to be laterally substantially at equilibrium state, pass through No. 1 purlin vehicle, No. 2
Cross traveling trolley left and right displacement, that is, levelling on the vehicle of purlin, after leveling, cross traveling trolley is fixed.
S502, front truck weighing leveling, Bridge Erector vertical structure be it is asymmetric, need to have been calculated according to distribution of weight level work
The off-position point of No. 1 purlin vehicle, No. 2 purlin vehicles, respectively sets a pressure sensor in two nose girder support frame lower ends, passes through mobile No. 1 purlin
Vehicle, No. 2 purlins truck position are leveled, and when leveling, are first used jack raising front leg strut, then remove a section steel buttress, are delayed again later
Slow decentralization jack, makes hanging 2~5 cm of front leg strut, reads sensing data.
S503, rear car weighing leveling, rear car leveling is identical as front truck leveling method, and rear support leg is vacantly not more than when weighing
5cm。
S504, after leveling weighing, No. 1 purlin vehicle of forward and backward movement, No. 2 purlins truck position keep forward and backward nose girder support frame counter-force poor
Within the scope of stationary value, that is, it is less than 500kN；Lateral accurate leveling is moved left and right using cross traveling trolley, and subiculum top of support is made to incline
Axially value is less than 2mm to angle transducer 8X, bundlees No. 1 purlin vehicle, No. 2 purlin vehicles and nose girder after Bridge Erector leveling and fastens, No. 1 purlin vehicle, 2
Locking, cross traveling trolley positioning pin are lockked and are welded before and after the vehicle traveling wheel group rail clamping device of number purlin.
S600~connection drive system and preliminary operation；The barrier in rotating range is cleared up, live wind speed is measured, according to wind speed
Variable-frequency motor running frequency is set, and frequency is set as 20Hz when 5.5 ~ 7.0m/s, and frequency is set as 5Hz when 2.5 ~ 3.0m/s, clockwise
Direction rotates 5 degree, 10 degree, rotates counterclockwise 5 degree, 10 degree.
S700~rotation u-turn；Speed and rotation angle are set, and Bridge Erector slowly revolves under the drive of rotating mechanism
Turn until stopping after 180 degree, by rotation sensor reading data, determining rotation to 180 degree stops rotating the time greater than 15
min；
S800~Bridge Erector dropping place.Bridge Erector is rotated in place, and front leg strut and rear car respectively use two bottle gouards moved by hands and beam face pre-buried steel
Muscle connection tenses, firm with sleeper and steel pier support pad, it is ensured that middle vehicle respectively by front leg strut and rear car raising under jack cooperation
It is separated with nose girder, removes lower joist and bearing is connected bolt, rotating device is slid out into Bridge Erector respectively with coaster, in installation
Vehicle traveling wheel group is simultaneously driven to position of setting a roof beam in place, and removes front leg strut and rear car buttress and wind cable, makes Bridge Erector nose girder and middle vehicle phase
Snapping, until Bridge Erector is in the state of setting a roof beam in place of supported at three point.
Case history：Middle Tie Shierju group uses in Xu salt railway I mark brass hill beam making field 900t box beam erection construction
SPJ900-32 type Bridge Erector, Bridge Erector integrally wide 18.2 m, high 13.5m, nose girder long 64m, weight 110t are bulky, in frame
If being driven into Bridge Erector on the bridge floor of the position Liang Chang after complete uplink box beam, use whole on bridge of the present invention
The mode of body rotation u-turn has carried out 180 degree steering, using rotating device and control system, realizes economic, quick, safety and adjusts
Head, whole process have obtained owner, management and the good evaluation gone together.
The rotating device and method can both operate on bridge, it is wider can also be applicable in place in roadbed or flat operating above ground；It should
Rotating device cooperates different supporting & stablizing truss, rotatable various types 900t Bridge Erector, beam car and large-scale steel structure, tool
There is a very wide range of popularization and application foreground.
In terms of time：Tradition builds ramp or the dismantling assembled u-turn minimum used time 45d of method again, is applied using apparatus of the present invention
4d when work, installation and rotation process share, saves duration 40d, greatly improves project progress.
In terms of cost：Assembled u-turn method whole process need to use 22 machine-teams of 450 beam machines or 400 tons of truck cranes again for dismantling, about
With 900,000 yuan, labour cost counts roughly 300,000 yuan for charging, in addition mending, damage part expense is total about to spend 1,600,000 yuan, and every tune is primary
Head just needs to generate above-mentioned expense.It is constructed using the present invention, rotating device is amortized by 10 turnovers, and each amortization charge is 200,000
Member, the condition device is also adjustable to turn beam car.
Operating aspect：Operation of the present invention is easy, and the assistance of other large scale equipments is not needed in assembled and rotary course；Safety wind
Danger is controllable, there is dedicated safety and monitoring setting and system；Operation precision is higher, there is an automatic and inching function, in automatic function
There is the control of PLC dedicated program.
Claims (6)
1. rotating integrally u-turn construction method on a kind of Bridge Erector bridge, it is characterised in that：Include the following steps：
S100~selection Bridge Erector rotation position, the position of Bridge Erector rotation are adjacent box beam seam crossing；
S200~support top Bridge Erector, beam car back carries on the back Bridge Erector reach Bridge Erector rotation, with vehicle stress point in infrared detection with
Hard point longitudinal and transverse range deviation in beam face makes it be no more than 1cm, integral lifting beam car, until front outrigger for bridge girder erection machine and rear car with
Beam identity distance is from until reaching 120cm, front leg strut steel pier support pad, rear car sleeper and rail support pad；
S300~rotating device is assembled；
S400~assembly nose girder support frame；
S500~weighing levels Bridge Erector；
S600~connection drive system and preliminary operation；
S700~rotation u-turn；Speed and rotation angle are set, and slowly rotation is straight under the drive of rotating mechanism for Bridge Erector
Stop after to 180 degree, by the way that rotation sensor reading data on the spinning device are arranged, determines that rotation to 180 degree stops, rotation
Turn the time greater than 15 min；
S800~Bridge Erector dropping place.
2. rotating integrally u-turn construction method on Bridge Erector bridge according to claim 1, it is characterised in that：The step
In S300, rotating device includes bracket（1）, bottom bracket（2）And swivel bearing（3）, bottom bracket（2）It is provided at four angles solid
Determine hole（4）, bottom bracket（2）Middle part is equipped with swivel bearing（3）, swivel bearing（3）Upside is installed by bracket（1）, bracket（1）
Two sides are provided with the middle vehicle fixing end for vehicle in fixation（5）, No. 1 purlin vehicle of Bridge Erector is by bottom bracket（2）It hangs in two panels box beam
Seam crossing, wherein 4 fixation holes（4）It is overlapped with box beam lifting hole(eyelet), fixation hole（4）Hanging beam sunpender is inside respectively penetrated, 4 spirals are very heavy
Top is respectively in the jacking of bottom bracket quadrangle until subiculum top of support reaches horizontality, around 4 fixation holes（4）It is perfused respectively
80X80cm gravity flowing levelling mortar, thickness are not less than 5cm, lift swivel bearing with No. 1 purlin vehicle again（3）, bracket（1）In and
Vehicle（6）, swivel bearing（3）With bracket（1）Between be bolted, middle vehicle（6）With bracket（1）Between be bolted, finally
The middle vehicle that will be unified with No. 1 purlin vehicle（6）, bracket（1）And swivel bearing（3）It is hung to bottom bracket（2）On, swivel bearing
（3）With bottom bracket（2）Between be bolted, remove beam car, drop Bridge Erector support, make middle vehicle（6）With nose girder support frame（9）
It is interlockingly connected, nose girder support frame（9）For inverted triangular structure, nose girder support frame（9）Lower part is fixed on bracket（1）On, nose girder branch
Support（9）Both upper ends thereof and Bridge Erector nose girder（11）Fixed, Bridge Erector is in front leg strut, middle vehicle and rear car supported at three point shape at this time
State.
3. rotating integrally u-turn construction method on Bridge Erector bridge according to claim 1, it is characterised in that：The step
In S400, nose girder is measured（11）With bracket（1）Between distance, front leg strut and rear height are adjusted, with No. 1 purlin vehicle electric block
Spelling nose girder support frame is simultaneously bolted fastening with nose girder gusset piece.
4. rotating integrally u-turn construction method on Bridge Erector bridge according to claim 1, it is characterised in that：The step
S500 includes the following steps,
S501, side leveling, Bridge Erector transverse structure are symmetrically, to be laterally substantially at equilibrium state, pass through No. 1 purlin vehicle, No. 2
Cross traveling trolley left and right displacement, that is, levelling on the vehicle of purlin, after leveling, cross traveling trolley is fixed；
S502, front truck weighing leveling, Bridge Erector vertical structure be it is asymmetric, need to have been calculated according to distribution of weight leveling act on
The off-position point of No. 1 purlin vehicle, No. 2 purlin vehicles, respectively sets a pressure sensor in two nose girder support frame lower ends（10）, risen by mobile two
Weight purlin truck position is leveled, and when leveling, first uses jack raising front leg strut, then remove a section steel buttress, later again slowly under
Jack is put, hanging 2~5 cm of front leg strut is made, reads sensing data；
S503, rear car weighing leveling, rear car leveling is identical as front truck leveling method, and rear support leg is vacantly not more than 5cm when weighing；
S504, after leveling weighing, No. 1 purlin vehicle of forward and backward movement, No. 2 purlins truck position are in forward and backward nose girder support frame counter-force difference
Within the scope of stationary value, that is, it is less than 500kN；Lateral accurate leveling is moved left and right using cross traveling trolley, passes subiculum top of support inclination angle
Sensor X axis value is less than 2mm, bundlees 2 No. 1 purlin vehicles, No. 2 purlin vehicles and nose girder after Bridge Erector leveling and fastens, No. 1 purlin vehicle, No. 2
Locking, cross traveling trolley positioning pin are lockked and are welded before and after the vehicle traveling wheel group rail clamping device of purlin.
5. rotating integrally u-turn construction method on Bridge Erector bridge according to claim 1, it is characterised in that：The step
S600 clears up the barrier in rotating range, measures live wind speed, is arranged variable-frequency motor running frequency according to wind speed, 5.5 ~
Frequency is set as 20Hz when 7.0m/s, and frequency is set as 5Hz when 2.5 ~ 3.0m/s, is rotated clockwise 5 degree, 10 degree, counterclockwise side
To 5 degree, 10 degree of rotation.
6. rotating integrally u-turn construction method on Bridge Erector bridge according to claim 1, it is characterised in that：The step
S800, Bridge Erector are rotated in place, and front leg strut and rear car respectively use two bottle gouards moved by hands to couple tension with beam face embedded bar, very heavy
It is firm with sleeper and steel pier support pad, it is ensured that middle vehicle is separated with nose girder, removes respectively by front leg strut and rear car raising under the cooperation of top
Lower joist and bearing are connected bolt, and rotating device is slid out Bridge Erector respectively with coaster, in installation vehicle traveling wheel group and by its
It is driven to position of setting a roof beam in place, front leg strut and rear car buttress and wind cable is removed, Bridge Erector nose girder is made to be interlockingly connected with middle vehicle, until at Bridge Erector
In the state of setting a roof beam in place of supported at three point.
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| CN201810522739.7A CN108842622B (en) | 2018-05-28 | 2018-05-28 | U-turn construction method is rotated integrally on a kind of Bridge Erector bridge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110541367A (en) * | 2019-09-25 | 2019-12-06 | 中铁十六局集团有限公司 | Rotating mechanism of segment beam bridge erecting machine |
| CN113186834A (en) * | 2021-05-17 | 2021-07-30 | 中铁十二局集团有限公司 | Rotary turning device and turning method of girder transporting vehicle of bridge girder erection machine |
| CN114575255A (en) * | 2022-02-25 | 2022-06-03 | 中铁第五勘察设计院集团有限公司 | Bridge girder erection machine turning device and using method thereof |
| CN114808736A (en) * | 2022-05-20 | 2022-07-29 | 中昕重工(宁波)有限公司 | Bridge prefabricated part cross-inside transverse flat-turning hoisting device and hoisting process method |
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| CN110541367A (en) * | 2019-09-25 | 2019-12-06 | 中铁十六局集团有限公司 | Rotating mechanism of segment beam bridge erecting machine |
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| CN114808736B (en) * | 2022-05-20 | 2024-04-12 | 中昕重工(宁波)有限公司 | Bridge prefabricated part inner-span transverse horizontal rotation hoisting device and hoisting process method |
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