CN112249940A - Hydraulic lifting and positioning system of cable-stayed bridge deck crane - Google Patents
Hydraulic lifting and positioning system of cable-stayed bridge deck crane Download PDFInfo
- Publication number
- CN112249940A CN112249940A CN202010770760.6A CN202010770760A CN112249940A CN 112249940 A CN112249940 A CN 112249940A CN 202010770760 A CN202010770760 A CN 202010770760A CN 112249940 A CN112249940 A CN 112249940A
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- hydraulic lifting
- systems
- hydraulic
- cable
- bridge deck
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a hydraulic lifting and positioning system of a cable-stayed bridge deck crane, which comprises: the device comprises a main cross beam, two groups of longitudinal moving systems, two groups of transverse moving systems, a control system and a hydraulic pump station; the main beam is longitudinally arranged on an upper chord of the bridge deck crane in a sliding manner, and a hydraulic lifting system is arranged on the main beam; one end of each longitudinal moving system is connected with the upper chord, and the other end of each longitudinal moving system is connected with the main cross beam; the two groups of transverse moving systems are arranged on the main cross beam, and each group of transverse moving systems is connected with one group of hydraulic lifting systems and can push or pull the hydraulic lifting systems to move transversely; the control system is in signal connection with a hydraulic pump station, and the hydraulic pump station is connected with the two groups of hydraulic lifting systems, the two groups of longitudinal moving systems and the two groups of transverse moving systems through hydraulic pipelines. The hydraulic lifting and positioning system of the cable-stayed bridge deck crane has the characteristics of clear division of each system, reasonable stress, convenience in operation, high intelligent degree and high efficiency and accuracy in beam adjustment.
Description
Technical Field
The invention belongs to the technical field of installation and construction of main beams of upper structures of cable-stayed bridges, and particularly relates to a hydraulic lifting and positioning system of a cable-stayed bridge deck crane.
Background
With the continuous development of bridge construction engineering in China, a large-span cable-stayed bridge is applied more, and how to efficiently and accurately adjust the upper structure of the cable-stayed bridge in place according to design requirements is a problem to be researched and solved. The existing cable-stayed bridge deck crane is divided into a winch type and a continuous acting jack type, when a beam section is hoisted and positioned, the problems that the beam adjusting speed is low, the accuracy is low, the operation of personnel is not facilitated and the like generally exist, particularly, the integrated construction of beam section hoisting and positioning cannot be realized, and the on-site efficient hoisting and accurate positioning of a cable-stayed bridge section cannot be met. In the construction of a cantilever hoisting beam section of a cable-stayed bridge deck crane, after the beam section is hoisted in place by a hydraulic hoisting jack, the beam section to be adjusted is dragged to move in the horizontal direction by the jack or a chain block, so that the aim of adjusting the beam section is fulfilled. However, there are the following problems: in the adjusting process, because the jack or the chain block is positioned on the front beam section, the steel strand or the finish-rolled deformed steel used by the jack and one end of the chain block chain are connected with the hung beam section, and the other end of the chain block chain is connected with the front beam section, after the beam section is hoisted in place, the beam adjusting device needs to be installed according to the actual situation on site, the construction time is wasted, and the beam section hoisting and positioning integrated construction cannot be realized. And in the positioning process, the horizontal positioning and the vertical positioning of the beam section are not on the same control platform, so that the operation of personnel is not facilitated, and the lifting and positioning efficiency of the beam section is reduced. The winch type bridge deck crane lifts the beam section through the winch, the positioning is usually carried out by a jack and a chain block, the beam adjusting precision is not easy to control, and the construction efficiency is low.
Disclosure of Invention
The present invention provides a hydraulic lifting and positioning system for a cable-stayed bridge deck crane, which overcomes the above problems or at least partially solves or alleviates the above problems.
Therefore, the invention provides a hydraulic lifting and positioning system of a cable-stayed bridge deck crane, which comprises:
the main cross beam is longitudinally arranged on an upper chord of the bridge deck crane in a sliding manner, and a hydraulic lifting system is arranged on the main cross beam;
one end of each group of longitudinal moving systems is connected with the upper chord, and the other end of each group of longitudinal moving systems is connected with the main beam;
each group of the transverse moving systems is arranged on the main cross beam and connected with one group of the hydraulic lifting systems, and the transverse moving systems can push or pull the hydraulic lifting systems to move transversely;
the hydraulic lifting system comprises a control system and a hydraulic pump station, wherein the control system is in signal connection with the hydraulic pump station, and the hydraulic pump station is connected with two groups of hydraulic lifting systems, two groups of longitudinal moving systems and two groups of transverse moving systems through hydraulic pipelines.
The hydraulic lifting and positioning system of the cable-stayed bridge deck crane also has the following optional characteristics.
Optionally, each set of the hydraulic lifting systems comprises:
the hydraulic lifting jack is characterized in that a jack base is arranged at the lower part of the hydraulic lifting jack;
the winding roll is fixed on the main cross beam through a winding roll base, a steel strand is wound on the winding roll, and the steel strand penetrates through the hydraulic lifting jack and then is connected with a lifting appliance;
the guide frame is fixed on the main cross beam through the support frame, and the steel strand is led out from the winding roll and then is wound around the guide frame and then passes through the hydraulic jack.
Optionally, each group of the longitudinal movement systems includes a longitudinal movement oil cylinder and a longitudinal movement counterforce seat, the longitudinal movement counterforce seat is disposed on the upper chord, one end of the longitudinal movement oil cylinder is connected with the longitudinal movement counterforce seat, and the other end of the longitudinal movement oil cylinder is connected with the main beam.
Optionally, each group of the traversing systems includes a traversing cylinder and a traversing counter-force seat, the traversing counter-force seat is disposed on the main beam, one end of the traversing cylinder is connected to the traversing counter-force seat, and the other end of the traversing cylinder is connected to the jack base.
Optionally, the jack bases are connected through a connecting piece, and the jack bases and the take-up reel base are connected through a connecting rod.
Optionally, two guide members are longitudinally arranged on the upper chord member, two pairs of clamping plates are longitudinally arranged on the lower portion of the main cross beam, each pair of clamping plates are respectively in sliding fit with two sides of one guide member, and an upper tetrafluoro sliding plate and a lower tetrafluoro sliding plate are respectively arranged between the main cross beam and the upper chord member.
Optionally, the guide frame is of a two-piece semicircular parallel truss structure, one end of the guide frame is connected with the jack base through a support frame, and the other end of the guide frame is connected with the winding roll through a support rod.
Optionally, the take-up reel base and the main beam are connected with a counter-pulling device.
When the hydraulic lifting and positioning system of the cable-stayed bridge deck crane lifts a beam section of a cable-stayed bridge through the hydraulic lifting system, the whole main cross beam can be longitudinally moved through the longitudinal moving system at the same time, so that the hydraulic lifting system longitudinally moves the beam section, and the hydraulic lifting system can be transversely moved through the transverse moving system at the same time, so that the beam section is transversely moved, the on-site efficient lifting and accurate positioning of the cable-stayed bridge section can be conveniently carried out, the integrated construction of single equipment for lifting and adjusting the beam is realized, and the hydraulic lifting and positioning system has the advantages of simple structure, easiness in operation, safe, efficient, accurate and high intelligent degree in beam adjustment.
Drawings
FIG. 1 is a schematic diagram of a forward structure of a hydraulic lifting and positioning system of a cable-stayed bridge deck crane according to the embodiment of the invention;
FIG. 2 is a schematic side view of a hydraulic lifting and positioning system of a cable-stayed bridge deck crane according to the embodiment of the invention;
FIG. 3 is a schematic view of the mating structure of the upper chord and the main cross member of FIG. 1;
FIG. 4 is a schematic view of the connection structure of the take-up reel base and the main beam of FIG. 1;
fig. 5 is a schematic structural view of the guide frame in fig. 1.
In the above figures:
1. a main cross beam; 2. a hydraulic lifting system; 3. a longitudinal movement system; 4. a traversing system; 5. a counter-pulling device; 6. a guide assembly; 7. a clamping plate; 8, a tetrafluoro sliding plate; 9. a polytetrafluoroethylene sliding plate; 10. an upper chord; 11. a jack base; 12. a hydraulic lifting jack; 13. steel strand wires; 14. longitudinally moving the oil cylinder; 15. longitudinally moving a counter-force seat; 16. transversely moving the oil cylinder; 17. a transverse moving counter-force seat; 18. a take-up reel; 19. a take-up reel base; 20. a connecting rod; 21. a control system; 22. a hydraulic pump station; 23. a connecting member; 24. transversely moving the limiting plate; 25. a guide frame; 26. the outer layer is opposite to the pull rod; 27. the inner layer is opposite to the pull rod; 28. a support bar; 29. a support frame; 30. a beam section.
Detailed Description
Example 1
Referring to fig. 1, an embodiment of the present invention provides a hydraulic lifting and positioning system for a cable-stayed bridge deck crane, including: the device comprises a main beam 1, two groups of longitudinal moving systems 3, two groups of transverse moving systems 4, a control system 21 and a hydraulic pump station 22; the main beam 1 is longitudinally arranged on an upper chord 10 of the bridge deck crane in a sliding manner, and the main beam 1 is provided with a hydraulic lifting system 2; one end of each of the two groups of longitudinal moving systems 3 is connected with the upper chord 10, and the other end is connected with the main beam 1; two groups of transverse moving systems 4 are arranged on the main beam 1, and each group of transverse moving systems 4 is connected with one group of hydraulic lifting systems 2 and can push or pull the hydraulic lifting systems 2 to move transversely; the control system 21 is in signal connection with the hydraulic pump station 22, and the hydraulic pump station 22 is connected with the two groups of hydraulic lifting systems 2, the two groups of longitudinal moving systems 3 and the two groups of transverse moving systems 4 through hydraulic pipelines.
When the beam section 30 needs to be hoisted, the control system 21 drives the hydraulic pump station 22 through controlling the diesel engine to enable the hydraulic lifting system 2 to work, and the beam section 30 is hoisted; when the beam section 30 needs to be longitudinally positioned, the control system 21 controls the diesel engine to drive the hydraulic pump station 22 to enable the longitudinal moving system 3 to work and act on the main cross beam 1, so that the main cross beam 1 is integrally displaced, and the beam section 30 is precisely longitudinally positioned; when the beam section 30 transversely needs to be adjusted in position, the control system 21 controls the diesel engine hydraulic pump station 22 to enable the transverse moving system 4 to work, so that the hydraulic lifting system 2 integrally displaces, the beam section 30 transversely carries out accurate position adjustment, and the beam section 30 is accurately and efficiently hoisted and integrally constructed in position adjustment.
Example 2
Referring to fig. 1, on the basis of embodiment 1, each set of hydraulic lifting systems 2 includes: hydraulic lifting jack 12, take-up reel 18 and guide frame 25; the lower part of the hydraulic jack 12 is provided with a jack base 11; a winding roll 18 is fixed on the main beam 1 through a winding roll base 19, a steel strand 13 is wound on the winding roll 18, and the steel strand 13 penetrates through the hydraulic lifting jack 12 and then is connected with a lifting appliance; the guide frame 25 is fixed on the main beam 1 through a support frame 28, and the steel strand 13 passes through the winding roll 18, bypasses the guide frame 25 and then passes through the hydraulic jack 12.
The hydraulic lifting jack 12 is bolted with the jack base 11 through a preformed hole, and the jack base 11 is placed on the main beam 1. The winding roll 18 is arranged on the winding roll base 19, the winding roll 18 is bolted with the winding roll base 19 through a preformed hole, the winding roll base 19 is arranged on the main beam 1, the winding roll 18 is an active winding roll, a wheel shaft of the winding roll 18 is provided with a hydraulic driving device, and the rotating speed of the winding roll 18 is consistent with the lifting speed of the hydraulic lifting jack 12.
Example 3
Referring to fig. 1 and 2, on the basis of embodiment 1, each group of longitudinal movement systems 3 includes a longitudinal movement oil cylinder 14 and a longitudinal movement reaction base 15, the longitudinal movement reaction base 15 is disposed on the upper chord 10, one end of the longitudinal movement oil cylinder 14 is connected with the longitudinal movement reaction base 15, and the other end is connected with the main beam 1.
The longitudinal moving system 3 comprises two longitudinal moving oil cylinders 14 and longitudinal moving counter-force seats 15, and when a beam section 30 of the cable-stayed bridge needs to be longitudinally adjusted, the control system 21 controls the diesel engine to drive the hydraulic pump station 22 to enable the longitudinal moving oil cylinders 14 to work, so that the main cross beam 1 is displaced on the upper chord 10 of the bridge deck crane, and the beam section is longitudinally and accurately adjusted.
Example 4
Referring to fig. 1, on the basis of embodiment 2, each group of traverse systems 4 includes a traverse cylinder 16 and a traverse reaction seat 17, the traverse reaction seat 17 is disposed on the main beam 1, one end of the traverse cylinder 16 is connected to the traverse reaction seat 17, and the other end is connected to the jack base 11.
As shown in fig. 1, when the beam section 30 is transversely adjusted, the control system 21 controls the diesel engine to drive the hydraulic pump station 22 so that the transverse oil cylinder 16 acts on the jack base 15, the jack base 15 acts on the take-up reel base 19 through the connecting rod 20, and the hydraulic lifting system 2 is integrally displaced so as to achieve the purpose of transversely adjusting the beam section 30.
Example 5
Referring to fig. 1, in embodiment 4, the jack bases 12 are connected by a connecting piece 23, and the jack base 12 and the take-up reel base 19 are connected by a connecting rod 20.
The hydraulic lifting base 15 is provided with a longitudinal limiting plate 24, so that the beam section 30 can be prevented from longitudinally displacing during transverse positioning. The two jack bases 15 are fixedly connected with the two steel strand hoist bases 19 through connecting rods 20 and connecting pieces 23, so that the aim of transversely adjusting the beam section 30 by the single transverse moving oil cylinder 16 is fulfilled.
Example 6
Referring to fig. 1 and 3, on the basis of embodiment 1, two guides 6 are longitudinally arranged on an upper chord 10, two pairs of blocking plates 7 are longitudinally arranged on the lower portion of a main beam 1, each pair of blocking plates 7 is respectively in sliding fit with two sides of one guide 6, and an upper tetrafluoro sliding plate 8 and a lower tetrafluoro sliding plate 9 are respectively arranged between the main beam 1 and the upper chord 10.
A pair of T-shaped guide assemblies 6 are longitudinally fixed on an upper chord 10 of the bridge deck crane in parallel and serve as guide rails, two pairs of clamping plates 7 are correspondingly connected to the lower portion of the main cross beam 1, each pair of clamping plates 7 are just clamped on two sides of each T-shaped guide assembly 6, and transverse displacement of a beam section 30 during longitudinal position adjustment can be avoided. The guiding component 6 is paved with a lower tetrafluoro sliding plate 9, an upper tetrafluoro sliding plate 8 is paved between every two clamping plates 7 of the main beam 1, when the beam section 30 is longitudinally adjusted, the relative displacement between the main beam 1 and the upper chord 10 of the bridge deck crane is converted into the relative displacement between the upper tetrafluoro sliding plate 8 and the lower tetrafluoro sliding plate 9, and the frictional resistance of the beam section 30 in the longitudinal adjustment is reduced.
Example 7
Referring to fig. 5, in the embodiment 2, the guiding frame 25 is a two-piece semicircular parallel truss structure, one end of the guiding frame 25 is connected to the jack base 11 through a supporting frame 29, and the other end is connected to the winding roll 18 through a supporting rod 28.
Example 8
Referring to fig. 4, on the basis of embodiment 2, a counter-pulling device 5 is connected between the take-up reel base 19 and the main beam 1.
The opposite-pulling device 5 can ensure the lateral stability of the beam section 30 in the hoisting process of the hydraulic lifting system 2, and when the beam section 30 is transversely adjusted, bolts of the opposite-pulling device 5 are loosened, so that the frictional resistance between the hydraulic lifting system 2 and the main cross beam 1 can be reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (8)
1. The utility model provides a cable-stay bridge floor crane hydraulic pressure promotes and positioning system which characterized in that includes:
the hydraulic lifting device comprises a main cross beam (1), wherein the main cross beam (1) is longitudinally arranged on an upper chord (10) of the bridge deck crane in a sliding manner, and two groups of hydraulic lifting systems (2) are arranged on the main cross beam (1);
one end of each group of longitudinal moving systems (3) is connected with the upper chord (10), and the other end of each group of longitudinal moving systems (3) is connected with the main beam (1);
the two groups of transverse moving systems (4), the transverse moving systems (4) are arranged on the main beam (1), and each group of transverse moving systems (4) is respectively connected with one group of hydraulic lifting systems (2) and can push or pull the hydraulic lifting systems (2) to move transversely;
the hydraulic lifting system comprises a control system (21) and hydraulic pump stations (22), wherein the control system (21) is in signal connection with the hydraulic pump stations (22), and the hydraulic pump stations (22) are connected with two groups of hydraulic lifting systems (2), two groups of longitudinal moving systems (3) and two groups of transverse moving systems (4) through hydraulic pipelines.
2. A hydraulic lifting and positioning system for a cable-stayed bridge deck crane according to claim 1, characterized in that each set of hydraulic lifting systems (2) comprises:
the hydraulic lifting jack (12), the lower part of the hydraulic lifting jack (12) is provided with a jack base (11);
the winding roll (18) is fixed on the main beam (1) through a winding roll base (19), a steel strand (13) is wound on the winding roll (18), and the steel strand (13) penetrates through the hydraulic lifting jack (12) and then is connected with a lifting appliance;
the guide frame (25) is fixed on the main cross beam (1) through a support frame (28), and the steel strand (13) passes through the hydraulic jack (12) after bypassing the guide frame (25) after passing out of the winding roll (18).
3. The hydraulic lifting and positioning system of a cable-stayed bridge deck crane according to claim 1, characterized in that: each group of longitudinal moving system (3) comprises a longitudinal moving oil cylinder (14) and a longitudinal moving counter-force seat (15), the longitudinal moving counter-force seat (15) is arranged on the upper chord (10), one end of the longitudinal moving oil cylinder (14) is connected with the longitudinal moving counter-force seat (15), and the other end of the longitudinal moving oil cylinder is connected with the main beam (1).
4. The hydraulic lifting and positioning system of the cable-stayed bridge deck crane according to claim 2, characterized in that: each group of the transverse moving system (4) comprises a transverse moving oil cylinder (16) and a transverse moving counter-force seat (17), the transverse moving counter-force seat (17) is arranged on the main cross beam (1), one end of the transverse moving oil cylinder (16) is connected with the transverse moving counter-force seat (17), and the other end of the transverse moving oil cylinder is connected with the jack base (11).
5. The hydraulic lifting and positioning system of a cable-stayed bridge deck crane according to claim 4, characterized in that: the jack bases (12) are connected through a connecting piece (23), and the jack bases (12) are connected with the winding roll base (19) through a connecting rod (20).
6. The hydraulic lifting and positioning system of a cable-stayed bridge deck crane according to claim 1, characterized in that: go up chord member (10) and vertically be provided with two guides (6), the lower part of main beam (1) vertically is provided with two pairs of screens board (7), and is every right screens board (7) respectively with one the both sides sliding fit of guide (6), main beam (1) with be equipped with tetrafluoro slide (8) and tetrafluoro slide (9) down between last chord member (10) respectively.
7. The hydraulic lifting and positioning system of the cable-stayed bridge deck crane according to claim 2, characterized in that: the guide frame (25) is of a two-piece semicircular parallel truss structure, one end of the guide frame (25) is connected with the jack base (11) through a support frame (29), and the other end of the guide frame is connected with the winding roll (18) through a support rod (28).
8. The hydraulic lifting and positioning system of the cable-stayed bridge deck crane according to claim 2, characterized in that: and a counter-pulling device (5) is connected between the winding roll base (19) and the main beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770760.6A CN112249940A (en) | 2020-08-04 | 2020-08-04 | Hydraulic lifting and positioning system of cable-stayed bridge deck crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770760.6A CN112249940A (en) | 2020-08-04 | 2020-08-04 | Hydraulic lifting and positioning system of cable-stayed bridge deck crane |
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| Publication Number | Publication Date |
|---|---|
| CN112249940A true CN112249940A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010770760.6A Pending CN112249940A (en) | 2020-08-04 | 2020-08-04 | Hydraulic lifting and positioning system of cable-stayed bridge deck crane |
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| CN (1) | CN112249940A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127899A (en) * | 2010-12-30 | 2011-07-20 | 中铁大桥局集团第二工程有限公司 | System for lifting and sliding large-tonnage steel box girder in land area and shoal area and construction method thereof |
| CN202766975U (en) * | 2012-07-14 | 2013-03-06 | 中交二公局第二工程有限公司 | Novel deck erection crane |
| CN207362709U (en) * | 2017-09-27 | 2018-05-15 | 中国葛洲坝集团第五工程有限公司 | A kind of erection crane of the two-way positioning of energy |
| CN108086168A (en) * | 2018-02-01 | 2018-05-29 | 中交路桥建设有限公司 | Ride cable-styled erection crane |
| CN110396931A (en) * | 2019-07-16 | 2019-11-01 | 中交第二公路工程局有限公司 | A kind of excessively cable-styled erection crane of center double plane cable stayed bridge and its construction method |
| CN110965478A (en) * | 2019-12-27 | 2020-04-07 | 中交二公局第二工程有限公司 | A beam-lifting and beam-moving integrated support mechanism |
| CN212954051U (en) * | 2020-08-04 | 2021-04-13 | 中交二公局第二工程有限公司 | Hydraulic lifting and positioning mechanism of cable-stayed bridge deck crane |
-
2020
- 2020-08-04 CN CN202010770760.6A patent/CN112249940A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127899A (en) * | 2010-12-30 | 2011-07-20 | 中铁大桥局集团第二工程有限公司 | System for lifting and sliding large-tonnage steel box girder in land area and shoal area and construction method thereof |
| CN202766975U (en) * | 2012-07-14 | 2013-03-06 | 中交二公局第二工程有限公司 | Novel deck erection crane |
| CN207362709U (en) * | 2017-09-27 | 2018-05-15 | 中国葛洲坝集团第五工程有限公司 | A kind of erection crane of the two-way positioning of energy |
| CN108086168A (en) * | 2018-02-01 | 2018-05-29 | 中交路桥建设有限公司 | Ride cable-styled erection crane |
| CN110396931A (en) * | 2019-07-16 | 2019-11-01 | 中交第二公路工程局有限公司 | A kind of excessively cable-styled erection crane of center double plane cable stayed bridge and its construction method |
| CN110965478A (en) * | 2019-12-27 | 2020-04-07 | 中交二公局第二工程有限公司 | A beam-lifting and beam-moving integrated support mechanism |
| CN212954051U (en) * | 2020-08-04 | 2021-04-13 | 中交二公局第二工程有限公司 | Hydraulic lifting and positioning mechanism of cable-stayed bridge deck crane |
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