CN113186834A - Rotary turning device and turning method of girder transporting vehicle of bridge girder erection machine - Google Patents
Rotary turning device and turning method of girder transporting vehicle of bridge girder erection machine Download PDFInfo
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- CN113186834A CN113186834A CN202110534616.7A CN202110534616A CN113186834A CN 113186834 A CN113186834 A CN 113186834A CN 202110534616 A CN202110534616 A CN 202110534616A CN 113186834 A CN113186834 A CN 113186834A
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- 238000004873 anchoring Methods 0.000 claims abstract description 35
- 238000005303 weighing Methods 0.000 claims abstract description 27
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- 230000005484 gravity Effects 0.000 claims description 6
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
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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
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Abstract
A rotary turning device of a girder transporting vehicle of a bridge girder erection machine and a turning method thereof are composed of a lower turntable anchoring device, a rubber pad, a lower turntable, a side supporting wheel group, a rotary supporting bearing system, an upper turntable, a supporting frame anchoring system, a movable weighing system, a height-adjustable supporting frame, a rotary driving device and the like. The lower rotary table is anchored on the erected box girder or fixed by an embedded ground anchor; the rotating part adopts a double-support system design of an independent rotary support bearing and a side support wheel group; the height-adjustable support frame can meet the support positions with different heights by assembling different adjusting sections; the support frame achieves four-point support and three-point balance through the design of a front balance bridge; the upper part of the support frame is anchored with the rotated equipment into a whole through a support frame anchoring system; the driving system adopts a variable frequency motor or hydraulic driving. The split bridge girder erection machine and the girder transporting vehicle are lifted to the turning device by the girder lifting machine to complete the rotation operation; the transportation and erection integrated bridge girder erection machine automatically lifts the turn-around device to the erected bridge floor on a beam yard or a roadbed to complete turn-around operation.
Description
Technical Field
The invention belongs to the technical field of construction equipment, and particularly relates to a rotary turning device and a turning method of a girder transporting vehicle of a bridge girder erection machine.
Background
At present, the bridge construction of a high-speed railway generally takes a large-tonnage simply-supported box girder as a main part, and the construction method of the box girder comprises beam yard prefabrication, beam transporting vehicle transportation and bridge girder erection machine erection. Due to the influence of factors such as beam yard position, beam manufacturing sequence, offline construction breakpoints, construction period requirements and the like, beam erection in the same direction is difficult to realize, frequent turning and transition of a bridge erecting machine are inevitable, and the timeliness of a turning scheme is crucial to smooth and timely propulsion of beam erection construction. Usually, a girder transporting vehicle is adopted to transport the bridge girder erection machine to realize two methods of turning around and disassembling and turning around in a wide place, and in mountainous areas and other areas in urban areas, a wide place is rarely used for turning around the bridge girder erection machine, and the disassembling and turning method has the advantages of high cost, long period and high risk.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a rotary turning device of a bridge girder transporting vehicle of a bridge girder erection machine and a turning method thereof, a universal multifunctional turning device of the bridge girder erection machine and the bridge girder transporting vehicle and turning methods for different bridge girder erection machines and different bridge girder transporting vehicles. The conventional turning method for turning around the bridge girder erection machine in a narrow place is to turn around and reassemble all parts after the bridge girder erection machine is disassembled, or to finish turning around by using a girder transport vehicle to transport the bridge girder erection machine in a wide and flat place. The disassembly and assembly scheme has the defects of long period, high cost and large safety risk, a plurality of construction sites do not have wide and flat sites, and the turning of the bridge girder erection machine for the consignment of the girder transporting vehicle cannot be realized.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a multi-functional turning device of general bridge girder erection machine and fortune roof beam car, includes lower carousel anchor 1, rubber pad 2, lower carousel 3, other supporting wheel group 4, gyration support bearing system 5, upper carousel 6, support frame anchor system 7, portable weighing system 8, height-adjustable support frame 9, rotary driving device 10, operation and control system 11, its characterized in that:
the lower rotary table 3 is anchored with an erected box girder or an embedded ground anchor of a bottom structure into a whole through the lower rotary table anchoring device 1, and the bottom structure is the erected box girder or the embedded ground anchor;
a rotary support bearing 5 and a side support wheel set 4 which are two vertical bearing parts are arranged between the lower rotary table 3 and the upper rotary table 6, and an annular side support wheel set track is designed on the rotary table;
the lower turntable anchoring device 1 and the upper turntable 6 are connected into a whole through the inner and outer ring bolts of the rotary support bearing system 5;
the upper turntable 6 and the height-adjustable support frame 9 are connected into a whole through bolts;
the upper part of the support frame with the adjustable height of the U-turn device 9 is anchored with the rotated equipment into a whole through a support frame anchoring system 7;
a movable weighing seat 8 is arranged on the height-adjustable support frame 9;
a rubber pad 2 is arranged between the lower turntable 3 and the bottom structure; a rotary driving device 10 fixed on the upper turntable 6 is driven by a variable frequency motor and speed reducer driving system or a hydraulic motor and speed reducer, and simultaneously, gear systems are designed on one side of a rotary supporting bearing and a speed reducer driving shaft to realize the transmission of rotary driving force;
the operation and control system 11 is connected with a driving device in the turning device and plays a role in electric control.
If the diameter of the lower turntable 1 exceeds 3m, the lower turntable can be designed into a two-half combined structure, so that the road transportation requirement is met.
The outer surface of the side supporting wheel set wheel 4 is designed to be a conical surface, so that the requirement of uniform load operation of the annular track is met.
The height-adjustable support frame 9 is provided with a plurality of heightening sections to meet the support requirements of equipment with different heights.
The height-adjustable support frame configuration 9 is designed with a hinge structure for supporting three points in balance by four points.
The movable weighing seat 8 can accurately display the stress numerical values of all points in real time.
The height-adjustable support frame 9 is characterized in that the lower longitudinal beam is connected with the upper rotating disc 6, the lower longitudinal beam is connected with the combined stand column, the combined stand column is provided with a front cross beam and a rear cross beam, the rear cross beam is provided with a movable weighing seat 8, inclined struts are arranged between the combined stand column and the front cross beam as well as between the combined stand column and the rear cross beam, and the combined stand column is provided with a crawling ladder and a platform.
A rotary turning method for a girder transporting vehicle of a bridge girder erection machine is implemented by turning a transportation and erection integrated bridge girder erection machine on a bridge floor where box girders are erected, and comprises the following steps:
1) the U-turn device completes assembly in a beam-making field without installing a weighing device and a height adjusting block.
2) The transportation and erection integrated bridge girder erection machine transversely moves to the lower part of the turning device, and the gravity center position of the transportation and erection integrated bridge girder erection machine is aligned to the center of the turning device;
3) the wheel set of the transportation and erection integrated bridge girder erection machine is suspended and lowered to a low position;
4) installing an anchoring device of a support bracket of the turning device and a main beam of the transportation frame integrated bridge girder;
5) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lifted to a high position, and the turning device is lifted;
6) the transportation and erection integrated bridge girder erection machine carries the turning device to a proper position of the bridge floor;
7) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lowered to a low position, and the anchoring device anchors the lower rotary disc and the erected box girder;
8) loosening the anchoring device of the support bracket of the turning device and the main beam of the transportation and erection integrated bridge girder erection machine;
9) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lifted to a high position, and a weighing device and an adjusting joint are arranged above the supporting bracket.
10) The wheel sets of the transportation and erection integrated bridge girder erection machine are suspended and completely withdrawn, so that the wheel sets are separated from the bridge floor and enough space is ensured;
11) the position of a front supporting leg of the transportation frame integrated bridge girder erection machine is adjusted according to the numerical value of the weighing device, so that the front weight and the rear weight are within an allowable range;
12) and starting the turning device to rotate the driving system to complete turning of the bridge girder erection machine on the bridge floor.
13) And the transportation and erection integrated bridge girder erection machine hangs down to remove the lower turntable anchoring system, and the transportation and erection integrated bridge girder erection machine carries the turning device to return to the beam field to complete turning operation.
A rotary turning method for a girder transporting vehicle of a bridge girder erection machine is implemented by turning a split type bridge girder erection machine and the girder transporting vehicle on a bridge floor with an erected box girder, and comprises the following steps:
1) the cross line beam lifting machine is provided with a turning device on the bridge floor;
2) the lower rotary table of the turning device is firmly anchored with the hoisting hole of the erected bridge box girder;
3) the over-line girder raising machine lifts the bridge girder erection machine, the gravity center position of the bridge girder erection machine is located at the center position of the turning device, and the main girder of the bridge girder erection machine and the upper part of the bracket of the turning device are firmly anchored through the anchoring device;
4) the weighing device displays the weight of each supporting point, and the position of a crown block of the bridge girder erection machine is adjusted according to the weight indication, so that the front and rear weight difference meets the requirement;
5) starting a turning device to rotate a driving device, and realizing the rotary turning of the split bridge girder erection machine;
6) and (4) dismantling each anchoring system, and lifting the split bridge girder erection machine from the turn-around device by the over-line girder lifting machine.
7) And (5) dismantling the turn-around device to finish turn-around operation.
The invention has the beneficial effects that:
by using the device, the in-situ turning of large bridge construction equipment such as a split type bridge girder erection machine of a high-speed railway, a transportation and erection integrated bridge girder erection machine, various girder transporting vehicles and the like in an erected bridge floor, roadbed or girder yard can be realized, and the purpose of saving the equipment turning field is achieved. The split bridge girder erection machine and the girder transporting vehicle can be lifted to the turning device through a tire (wheel rail) girder lifting machine configured on a construction site to complete the rotation operation; the transportation and erection integrated bridge girder erection machine can automatically lift the turn-around device to the erected bridge floor at a beam yard or a roadbed to complete turn-around operation.
The turning device is characterized in that: firm anchoring systems are designed at the upper part and the lower part of the rotary table, so that the safety coefficient is high; the rotary support is provided with a double-support system of a rotary support bearing and a side support wheel set, and the stability of the rotary system is high; the support frame achieves a four-point support three-point balance design through the design of a front balance bridge, the structural stress is uniform, and the weighing is accurate; the support frame is the height-adjustable design, satisfies not co-altitude equipment turn around, and adaptability is wide.
The method can meet the requirements of various large girder transporting vehicles and various split bridge girder erection machines in the construction of high-speed railways, and the transporting and erecting all-in-one machines with various structural forms can realize the turning and rotating operation of equipment at the positions of bridge floors, roadbeds, beam yards and the like where box girders are erected, do not need special turning fields, and have the advantages of simplicity, practicability, high safety factor, stability, high efficiency and strong adaptability.
Drawings
FIG. 1 is an elevational view of the overall construction of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is a view of a lower dial junction of the present invention;
FIG. 4 is a top plan view of the inventive upper turntable structure;
FIG. 5 is a structural view of the height adjustable stand of the present invention;
FIG. 6 is a side view of the transportation and erection integrated bridge girder erection machine after the bridge deck is erected and turned around;
FIG. 7 is a cross-sectional view of the transportation and erection integrated bridge girder erection machine after turning around the bridge deck;
FIG. 8 is a side view of the split type bridge girder erection machine after the bridge deck is erected and the turn-around is completed;
FIG. 9 is a sectional view of the split type bridge girder erection machine after the bridge deck is erected and the turn-around is completed;
FIG. 10 is a side view of the girder transporting vehicle after the bridge deck is erected and the turning is completed;
FIG. 11C-C section view of beam transporting vehicle after turning around on erected bridge floor
Wherein: 1. a lower turntable anchoring device; 2. a rubber pad; 3. a lower turntable; 4. a side supporting wheel group; 5. a slewing support bearing system; 6. an upper turntable; 7. a support frame anchoring system; 8. a mobile weighing system; 9. a height-adjustable support frame; 10. a rotation driving device; 11. an operating and control system.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a general multifunctional turning device for bridge girder erection machine and girder transporting vehicle, which comprises a lower turntable anchoring device 1, a rubber pad 2, a lower turntable 3, a side supporting wheel set 4, a rotary supporting bearing system 5, an upper turntable 6, a supporting frame anchoring system 7, a mobile weighing system 8, a height-adjustable supporting frame 9, a rotary driving device 10, an operation and control system 11, and is characterized in that:
as shown in fig. 3, the lower rotary table 3 is anchored with an erected box girder or an embedded ground anchor of a bottom structure as a whole through a lower rotary table anchoring device 1, wherein the bottom structure is the erected box girder or the embedded ground anchor;
a rotary support bearing 5 and a side support wheel set 4 which are two vertical bearing parts are arranged between the lower rotary table 3 and the upper rotary table 6, and an annular side support wheel set track is designed on the rotary table;
the lower turntable anchoring device 1 and the upper turntable 6 are connected into a whole through the inner and outer ring bolts of the rotary support bearing system 5;
the upper turntable 6 and the height-adjustable support frame 9 are connected into a whole through bolts;
the upper part of the support frame with the adjustable height of the U-turn device 9 is anchored with the rotated equipment into a whole through a support frame anchoring system 7;
a movable weighing seat 8 is arranged on the height-adjustable support frame 9;
a rubber pad 2 is arranged between the lower turntable 3 and the bottom structure;
as shown in fig. 4, the rotary driving device 10 fixed on the upper turntable 6 is driven by a variable frequency motor plus reducer driving system or a hydraulic motor plus reducer, and simultaneously, a gear system is designed on one side of a rotary support bearing and a reducer driving shaft to realize the transmission of rotary driving force;
the operation and control system 11 is connected with a driving device in the turning device and plays a role in electric control.
If the diameter of the lower turntable 1 exceeds 3m, the lower turntable can be designed into a two-half combined structure, so that the road transportation requirement is met.
The outer surface of the side supporting wheel set wheel 4 is designed to be a conical surface, so that the requirement of uniform load operation of the annular track is met.
The height-adjustable support frame 9 is provided with a plurality of heightening sections to meet the support requirements of equipment with different heights.
The height-adjustable support frame configuration 9 is designed with a hinge structure for supporting three points in balance by four points.
The movable weighing seat 8 can accurately display the stress numerical values of all points in real time.
As shown in fig. 5, the lower longitudinal beam of the height-adjustable support frame 9 is connected with the upper rotating disc 6, the lower longitudinal beam is connected with the combined upright column, the combined upright column is provided with a front cross beam and a rear cross beam, the rear cross beam is provided with a movable weighing seat 8, inclined struts are arranged between the combined upright column and the front cross beam as well as between the combined upright column and the rear cross beam, and the combined upright column is provided with a ladder stand and a platform.
As shown in fig. 6 and 7, a method for turning back a girder transporting vehicle of a bridge girder erection machine, in which the bridge girder erection machine integrated with the bridge girder transportation machine is turned back on a bridge floor where box girders are erected, comprises the following steps:
1) the U-turn device completes assembly in a beam-making field without installing a weighing device and a height adjusting block.
2) The transportation and erection integrated bridge girder erection machine transversely moves to the lower part of the turning device, and the gravity center position of the transportation and erection integrated bridge girder erection machine is aligned to the center of the turning device;
3) the wheel set of the transportation and erection integrated bridge girder erection machine is suspended and lowered to a low position;
4) installing an anchoring device of a support bracket of the turning device and a main beam of the transportation frame integrated bridge girder;
5) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lifted to a high position, and the turning device is lifted;
6) the transportation and erection integrated bridge girder erection machine carries the turning device to a proper position of the bridge floor;
7) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lowered to a low position, and the anchoring device anchors the lower rotary disc and the erected box girder;
8) loosening the anchoring device of the support bracket of the turning device and the main beam of the transportation and erection integrated bridge girder erection machine;
9) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lifted to a high position, and a weighing device and an adjusting joint are arranged above the supporting bracket.
10) The wheel sets of the transportation and erection integrated bridge girder erection machine are suspended and completely withdrawn, so that the wheel sets are separated from the bridge floor and enough space is ensured;
11) the position of a front supporting leg of the transportation frame integrated bridge girder erection machine is adjusted according to the numerical value of the weighing device, so that the front weight and the rear weight are within an allowable range;
12) and starting the turning device to rotate the driving system to complete turning of the bridge girder erection machine on the bridge floor.
13) And the transportation and erection integrated bridge girder erection machine hangs down to remove the lower turntable anchoring system, and the transportation and erection integrated bridge girder erection machine carries the turning device to return to the beam field to complete turning operation.
As shown in fig. 8, 9, 10 and 11, a method for turning over a girder transporting vehicle of a bridge girder erection machine in a rotating manner, wherein a split type bridge girder erection machine and a split type girder transporting vehicle are implemented in a turning way on a bridge floor with a box girder erected, comprises the following steps:
1) the cross line beam lifting machine is provided with a turning device on the bridge floor;
2) the lower rotary table of the turning device is firmly anchored with the hoisting hole of the erected bridge box girder;
3) the over-line girder raising machine lifts the bridge girder erection machine, the gravity center position of the bridge girder erection machine is located at the center position of the turning device, and the main girder of the bridge girder erection machine and the upper part of the bracket of the turning device are firmly anchored through the anchoring device;
4) the weighing device displays the weight of each supporting point, and the position of a crown block of the bridge girder erection machine is adjusted according to the weight indication, so that the front and rear weight difference meets the requirement;
5) starting a turning device to rotate a driving device, and realizing the rotary turning of the split bridge girder erection machine;
6) and (4) dismantling each anchoring system, and lifting the split bridge girder erection machine from the turn-around device by the over-line girder lifting machine.
7) And (5) dismantling the turn-around device to finish turn-around operation.
Claims (9)
1. The utility model provides a multi-functional turning device of general bridge girder erection machine and fortune roof beam car, includes lower carousel anchor (1), rubber pad (2), lower carousel (3), other supporting wheel group (4), gyration support bearing system (5), upper carousel (6), support frame anchor system (7), portable weighing system (8), height-adjustable support frame (9), rotary driving device (10), operation and control system (11), its characterized in that:
the lower rotary table (3) is anchored with a bottom structure (an erected box girder or an embedded ground anchor) into a whole through a lower rotary table anchoring device (1), and the bottom structure is the erected box girder or the embedded ground anchor;
a rotary support bearing (5) and a side support wheel set (4) are arranged between the lower rotary table (3) and the upper rotary table (6), and an annular side support wheel set track is designed on the rotary table;
the lower turntable anchoring device (1) and the upper turntable (6) are connected into a whole through the inner and outer ring bolts of the rotary support bearing system (5);
the upper turntable (6) is connected with the height-adjustable support frame (9) into a whole through a bolt;
the upper part of the height-adjustable support frame (9) is anchored with the rotated equipment into a whole through a support frame anchoring system (7);
a movable weighing seat (8) is arranged on the height-adjustable support frame (9);
a rubber pad (2) is arranged between the lower turntable (3) and the bottom structure; a rotary driving device (10) fixed on the upper turntable (6) is driven by a variable frequency motor speed reducer driving system or a hydraulic motor speed reducer, and meanwhile, a gear system is designed on one side of the rotary support bearing system (5) and a speed reducer driving shaft to realize the transmission of rotary driving force;
the operation and control system (11) is connected with a driving device in the turning device and plays a role in electric control.
2. The multifunctional turning device for the universal bridge girder erection machine and the girder transportation vehicle as claimed in claim 1, wherein the (1) lower turntable can be designed into a two-half combined structure if the length of the lower turntable exceeds 3m, so as to meet the road transportation requirement.
3. The multifunctional turning device for the universal bridge girder erection machine and the beam-transporting vehicle as claimed in claim 1, wherein the outer surface of the wheel (4) of the side supporting wheel set is designed to be a conical surface so as to meet the requirement of uniform load running of an annular track.
4. The multifunctional turning device for the universal bridge girder erection machine and the girder transportation vehicle as claimed in claim 1, wherein the height-adjustable support frame (9) is provided with a plurality of height-increasing joints to meet the support requirements of equipment with different heights.
5. The multifunctional turning device for a general bridge girder erection machine and girder transportation vehicle as claimed in claim 1, wherein the height-adjustable support frame configuration (9) is designed with a four-point supporting three-point balanced hinge structure.
6. The multifunctional turning device for the universal bridge girder erection machine and the girder transportation vehicle as claimed in claim 1, wherein the movable weighing seat (8) can accurately display the stress value of each point in real time.
7. The multifunctional turning device for the universal bridge girder erection machine and the beam transporting vehicle as claimed in claim 1, wherein the lower longitudinal beam of the height adjustable support frame (9) is connected with the upper rotating disc (6), the lower longitudinal beam is connected with the combined upright column, the combined upright column is provided with the front cross beam and the rear cross beam, the rear cross beam is provided with the movable weighing seat (8), the combined upright column is provided with the inclined strut between the front cross beam and the rear cross beam, and the combined upright column is provided with the ladder stand and the platform.
8. A rotary turning method of a girder transporting vehicle of a bridge girder erection machine is characterized in that the turning of the bridge girder erection machine integrated with the bridge girder transportation machine is implemented on the bridge floor of an erected box girder, and comprises the following steps:
1) the U-turn device completes assembly in a beam-making field without installing a weighing device and a height adjusting block;
2) the transportation and erection integrated bridge girder erection machine transversely moves to the lower part of the turning device, and the gravity center position of the transportation and erection integrated bridge girder erection machine is aligned to the center of the turning device;
3) the wheel set of the transportation and erection integrated bridge girder erection machine is suspended and lowered to a low position;
4) installing an anchoring device of a support bracket of the turning device and a main beam of the transportation frame integrated bridge girder;
5) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lifted to a high position, and the turning device is lifted;
6) the transportation and erection integrated bridge girder erection machine carries the turning device to a proper position of the bridge floor;
7) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lowered to a low position, and the anchoring device anchors the lower rotary disc and the erected box girder;
8) loosening the anchoring device of the support bracket of the turning device and the main beam of the transportation and erection integrated bridge girder erection machine;
9) the wheel set of the transportation and erection integrated bridge erecting machine is suspended and lifted to a high position, and a weighing device and an adjusting joint are arranged above the supporting bracket;
10) the wheel sets of the transportation and erection integrated bridge girder erection machine are suspended and completely withdrawn, so that the wheel sets are separated from the bridge floor and enough space is ensured;
11) the position of a front supporting leg of the transportation frame integrated bridge girder erection machine is adjusted according to the numerical value of the weighing device, so that the front weight and the rear weight are within an allowable range;
12) starting a turning device to rotate a driving system, and turning the bridge girder erection machine on the bridge floor;
13) and the transportation and erection integrated bridge girder erection machine hangs down to remove the lower turntable anchoring system, and the transportation and erection integrated bridge girder erection machine carries the turning device to return to the beam field to complete turning operation.
9. A rotary turning method of a girder transporting vehicle of a bridge girder erection machine is characterized in that the split type bridge girder erection machine and the girder transporting vehicle are turned around on a bridge floor of an erected box girder, and the rotary turning method comprises the following steps:
1) the cross line beam lifting machine is provided with a turning device on the bridge floor;
2) the lower rotary table of the turning device is firmly anchored with the hoisting hole of the erected bridge box girder;
3) the over-line girder raising machine lifts the bridge girder erection machine, the gravity center position of the bridge girder erection machine is located at the center position of the turning device, and the main girder of the bridge girder erection machine and the upper part of the bracket of the turning device are firmly anchored through the anchoring device;
4) the weighing device displays the weight of each supporting point, and the position of a crown block of the bridge girder erection machine is adjusted according to the weight indication, so that the front and rear weight difference meets the requirement;
5) starting a turning device to rotate a driving device, and realizing the rotary turning of the split bridge girder erection machine;
6) dismantling each anchoring system, and lifting the split bridge girder erection machine from the turn-around device by the over-line girder lifting machine;
7) and (5) dismantling the turn-around device to finish turn-around operation.
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| CN202110534616.7A CN113186834A (en) | 2021-05-17 | 2021-05-17 | Rotary turning device and turning method of girder transporting vehicle of bridge girder erection machine |
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| CN202110534616.7A CN113186834A (en) | 2021-05-17 | 2021-05-17 | Rotary turning device and turning method of girder transporting vehicle of bridge girder erection machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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