CN111252683A - Bridge deck crane and application method thereof applied to bridge dismantling - Google Patents
Bridge deck crane and application method thereof applied to bridge dismantling Download PDFInfo
- Publication number
- CN111252683A CN111252683A CN202010131177.0A CN202010131177A CN111252683A CN 111252683 A CN111252683 A CN 111252683A CN 202010131177 A CN202010131177 A CN 202010131177A CN 111252683 A CN111252683 A CN 111252683A
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- frame
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- movable pulley
- pulley
- bridge
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- 238000000034 method Methods 0.000 title abstract description 10
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004804 winding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
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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
- B66C25/00—Cranes not provided for in groups B66C17/00 - B66C23/00
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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
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/08—Arrangements of sheaves
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a bridge deck crane and a use method thereof applied to bridge dismantling, the bridge deck crane comprises a frame, a fixed pulley, a movable pulley, a traction driving device and a rigging, wherein the fixed pulley is rotatably arranged at one end of the top of the frame, the movable pulley is arranged under the fixed pulley, the traction driving device is arranged at a preset distance from the other end of the frame, the traction driving device is provided with a traction rope, the traction rope is wound on the fixed pulley and the movable pulley, the fixed pulley and the movable pulley are driven to rotate through retraction and release of the traction rope to realize the lifting motion of the movable pulley, when the movable pulley is lifted to abut against the fixed pulley, the traction rope is clamped to drive the frame to slide, and the rigging is arranged on a pulley seat of the movable pulley. The bridge deck crane can realize the lifting movement of the hoisted objects and the sliding of the rack through the traction driving device, and compared with the prior art, the bridge deck crane has the advantages of simple design structure, simple and convenient operation and lower manufacturing cost. The bridge crane is simple and convenient to operate when being used for disassembling the bridge, and the disassembling period is effectively shortened.
Description
Technical Field
The invention relates to a bridge deck crane and a use method thereof applied to bridge dismantling.
Background
CN201810522320.1 discloses a rotatable bridge deck crane for assembling steel box girders, CN201910640077.8 discloses a central double-cable-plane cable-stayed bridge cable-passing bridge deck crane and a construction method thereof, CN201810311489.2 discloses a central cable-plane steel box girder integral bridge deck crane, and CN201220339990.8 discloses a novel bridge deck crane. The bridge deck crane of the above four patent application documents has a common feature that: two sets of power devices are required to work, one set of power device is arranged at the top of the truss and used for lifting heavy objects, and the other set of power device is arranged at the bottom of the truss and used for driving the crane to walk. Thus, the design structure is complex and the manufacturing cost is high. Therefore, it is necessary to design a new bridge deck crane to solve the existing problems.
Disclosure of Invention
In view of the above, in order to meet the market demand, the present invention needs to provide a bridge crane with simple structure and low manufacturing cost.
The technical scheme adopted by the invention is as follows:
a bridge floor crane comprises a frame, a fixed pulley, a movable pulley, a traction driving device and a rigging, wherein the fixed pulley is rotatably arranged at one end of the top of the frame, the movable pulley is arranged under the fixed pulley, the traction driving device is arranged at a preset distance from the other end of the frame, the traction driving device is provided with a traction rope, the traction rope is wound on the fixed pulley and the movable pulley, the fixed pulley and the movable pulley are driven to rotate through retraction and release of the traction rope so as to realize the lifting motion of the movable pulley, when the movable pulley rises to abut against the fixed pulley, the traction rope is clamped by the clamp so as to drive the frame to slide, and the rigging is arranged on a pulley seat of the movable pulley.
Furthermore, the traction rope is arranged on the fixed pulley and the movable pulley in a winding way after penetrating through the guide piece.
Furthermore, the guide piece adopts a guide wheel, and a guide groove matched with the traction rope is formed on the periphery of the guide wheel.
Further, the frame includes the underframe frame, the top frame, first bracing piece, second bracing piece and diagonal draw bar, the width of underframe frame is greater than the width of top frame, the length of underframe frame is equivalent with the length of top frame, the top frame is located the oblique top of underframe frame, underframe frame one end both sides are respectively through first bracing piece and top frame one end both sides fixed connection, underframe frame other end both sides are articulated with top frame other end both sides through diagonal draw bar respectively, form the bottom wide, the narrow terrace with edge structure in top, the one end both sides that are fixed with first bracing piece on the underframe frame are fixed with the one end both sides fixed connection of diagonal draw bar through second bracing piece and top frame, relative both sides and first bracing piece between underframe frame and the top frame, second bracing piece and diagonal draw bar cooperation form two triangle-shaped structures.
Further, the fixed pulley is rotatably arranged at one end of the top frame, which is fixed with the first supporting rod.
Further, the guide member is arranged on the bottom frame and located between the two second support rods which are oppositely arranged.
Furthermore, the fixed pulleys and the movable pulleys are correspondingly arranged in multiple groups up and down.
Further, the traction driving device adopts a winch.
Further, the rigging employs shackles, such as hooks, tensioners, clenches or collars.
A use method for detaching a bridge by applying the bridge deck crane is characterized in that a bridge body is formed by splicing a plurality of sections of box girders, a frame and a traction driving device are fixed on a bridge deck at preset intervals, the box girders to be detached are bound and fixed through ropes and then hung on a rigging, then the box girders are detached, the box girders are descended through the descending of the traction ropes of the traction driving device to drive a fixed pulley and a movable pulley to rotate so as to descend onto a barge on a river surface, the ropes are taken down from the box girders, the frame and the bridge deck are released and fixed so as to enable the frame to slide relative to the bridge deck, the ropes hung on the rigging are ascended through the rotation of the fixed pulley and the movable pulley driven by the rolling of the traction ropes of the traction driving device, when the movable pulley ascends to abut against the fixed pulley, the traction ropes are clamped so as to drive the frame to slide to the next hoisting position towards one end of the traction driving device, then the frame is fixed on the bridge deck, the box girders to be detached are hung, and continuously circulating the corresponding steps and executing multiple hoisting operations.
The bridge floor crane is provided with the frame, the fixed pulley, the movable pulley, the traction driving device and the rigging which are matched, the traction driving device is arranged at a preset distance from the frame, the traction rope of the traction driving device can drive the fixed pulley and the movable pulley to rotate so as to realize the lifting motion of the movable pulley, and the rigging is arranged on the pulley seat of the movable pulley so as to be convenient for being fixed with the rope of a lifted object, thereby driving the lifted object to lift. When the movable pulley rises to abut against the fixed pulley, the traction rope is clamped to drive the rack to slide. The lifting movement of the hoisted object and the sliding of the rack can be realized through the traction driving device, and compared with the prior art, the lifting device has the advantages of simple design structure, simple and convenient operation and lower manufacturing cost.
When the bridge crane is applied to bridge dismantling, the traction driving device can be used for driving the box girder to descend and driving the rack to slide along the bridge deck along with the gradual shortening of the bridge body in the dismantling process, the operation is simple and convenient, and the dismantling period is effectively shortened.
Preferred embodiments of the present invention and advantageous effects thereof will be described in further detail with reference to specific embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings, there is shown in the drawings,
FIG. 1: the invention discloses a schematic front view of the whole structure of a bridge deck crane;
FIG. 2: the invention discloses a side-view schematic diagram of a local structure of a bridge deck crane;
FIG. 3: the invention relates to a use state diagram of a bridge deck crane arranged on a bridge deck.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1 and 2, a bridge deck crane according to a preferred embodiment of the present invention includes a frame 1, a fixed pulley 2, a movable pulley 3, a traction driving device 4, a guiding element 5 and a rigging 6, wherein the fixed pulley 2 is rotatably disposed at one end of the top of the frame 1, the movable pulley 3 is disposed under the fixed pulley 2, the traction driving device 5 is disposed at a predetermined distance from the other end of the frame 1, the guiding element 5 is disposed at the bottom of the frame 1, the traction driving device 4 has a traction rope 41, the traction rope 41 passes through the guiding element 5 and is wound around the fixed pulley 2 and the movable pulley 3, and the fixed pulley 2 and the movable pulley 3 are driven to rotate by winding and unwinding the traction rope 41 to realize the lifting movement of the movable pulley 3. When the movable pulley 3 ascends to abut against the fixed pulley 2, the traction rope 41 is clamped to drive the frame 1 to slide. The rigging 6 is provided on the pulley holder of the movable pulley 3 and is used for locking a rope bound to an object to be lifted. Set up in frame 1 bottom through guide 5, can guide haulage rope 41 to frame 1 bottom for haulage rope 41 acts on the pulling force direction slope of frame 1 upwards, can reduce frame 1 and the frictional force on ground at the slip in-process, is favorable to the gliding stability of frame 1. It is understood that the guide 5 may be omitted and the traction rope 41 of the traction drive 4 is directly wound around the fixed sheave 2 and the movable sheave 3.
The bridge deck crane is provided with a rack 1, a fixed pulley 2, a movable pulley 3, a traction driving device 4 and a rigging 6 which are matched, the traction driving device 4 is arranged at a preset distance from the rack 1, a traction rope 41 of the traction driving device 4 can drive the fixed pulley 2 and the movable pulley 3 to rotate so as to realize the lifting motion of the movable pulley 3, and the rigging 6 is arranged on a pulley seat of the movable pulley 3 so as to be convenient to be fixed with a rope of a lifted object, thereby driving the lifted object to lift. When the movable pulley 3 ascends to abut against the fixed pulley 2, the traction rope 41 is clamped to drive the frame 1 to slide. The lifting movement of the hoisted object and the sliding of the frame 1 can be realized through the traction driving device 4, and compared with the prior art, the design has the advantages of simple structure, simple and convenient operation and lower manufacturing cost.
The frame 1 comprises a bottom frame 11, a top frame 12 and a first supporting rod 13, the width of the bottom frame 11 is greater than that of the top frame 12, the length of the bottom frame 11 is equal to that of the top frame 12, the top frame 12 is located above the bottom frame 11, two sides of one end of the bottom frame 11 are fixedly connected with two sides of one end of the top frame 12 through the first support rods 13 respectively, two sides of the other end of the bottom frame 11 are hinged with two sides of the other end of the top frame 12 through the diagonal draw bars 15 respectively to form a frustum structure with a wide bottom and a narrow top, two sides of one end of the bottom frame 11, which is fixed with the first support rods 13, are fixedly connected with two sides of one end of the diagonal draw bars 15 through the second support rods 14 and the top frame 12, and two opposite sides between the bottom frame 11 and the top frame 12 are matched with the first support rods 13, the second support rods 14 and the diagonal draw bars 15 to form two triangular structures. The fixed pulley 2 is rotatably provided at one end of the top frame 12 to which the first support rod 13 is fixed. The guide 5 is disposed on the bottom frame 11 and between two second support rods 14 disposed oppositely. The frame 1 is designed in such a way that the structure is simple and the supporting stability is good. In order to further enhance the stability of the support, a reinforcing rod 16 is fixedly connected between the two first support rods 13 which are oppositely arranged. Preferably, the first support bar 13, the second support bar 14 and the diagonal draw bar 15 are detachably connected to the bottom frame 11 and the top frame 12 through bolts, so as to facilitate detachment and transportation and reduce the occupied space.
The frame 1 is provided with an anchoring structure 7 for fixing the frame 1 on a supporting surface, so that the frame 1 is prevented from toppling over due to overlarge stress on the inclined extending end at the top of the frame 1 in the hoisting process. The anchor structure 7 is disposed on the bottom frame 11, and the specific structure of the anchor structure 7 is well known to those skilled in the art and will not be described herein again.
The fixed pulley 2 and the movable pulley 3 can be correspondingly arranged in a plurality of groups up and down to play a role of saving power.
In this embodiment, the traction drive 4 is a hoist disclosed in the related art.
In this embodiment, the guide member 5 is a guide wheel, and a guide groove engaged with the traction rope 41 is formed on the outer periphery of the guide wheel.
In this embodiment, the rigging 6 is a shackle, but is not limited thereto, and may be a hook, a tensioner, a cable clamp, a loop, or the like.
Referring to fig. 3, the bridge deck crane of the present invention is well adapted to the bridge dismantling construction, and therefore, the present invention also provides a method for using the above bridge deck crane to dismantle a bridge, wherein a bridge body is formed by splicing a plurality of sections of box girders 8, a frame 1 and a traction driving device 4 are fixed on the bridge deck at a predetermined distance, the box girders 8 to be dismantled are bound and fixed by ropes and then hung on a rigging 6, then the box girders 8 are dismantled, the fixed pulley 2 and the movable pulley 3 are driven to rotate by the downward movement of a traction rope 41 of the traction driving device 4, the box girders 8 are lowered to a barge on the river, the ropes are taken down from the box girders 8, the frame 1 and the bridge deck are released from being fixed so that the frame 1 can slide relative to the bridge deck, the fixed pulley 2 and the movable pulley 3 are driven to rotate by the traction rope 41 of the traction winding driving device 4, the ropes hung on the rigging 6 are raised, when the movable pulley 3 is raised to abut against the fixed pulley 2, thereby haulage rope 41 is held and is driven frame 1 to slide to next hoist and mount position towards traction drive device 4 one end, is fixed in the bridge floor with frame 1 again, and the box girder 8 that will wait to dismantle is binded fixedly through the rope and is hung on rigging 6, continues to circulate above-mentioned corresponding step, carries out hoist and mount operation many times. When the bridge crane is applied to bridge dismantling, the traction driving device 4 can be used for driving the box girder 8 to descend and driving the rack 1 to slide along the bridge floor along with the gradual shortening of the bridge body in the dismantling process, so that the operation is simple and convenient, and the dismantling period is effectively shortened.
Any combination of the various embodiments of the present invention should be considered as disclosed in the present invention, unless the inventive concept is contrary to the present invention; within the scope of the technical idea of the invention, any combination of various simple modifications and different embodiments of the technical solution without departing from the inventive idea of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a bridge floor loop wheel machine, includes frame (1), traction drive (4) and rigging (6), its characterized in that: the movable pulley traction device is characterized by further comprising a fixed pulley (2) and a movable pulley (3), the fixed pulley (2) is rotatably arranged at one end of the top of the rack (1), the movable pulley (3) is arranged under the fixed pulley (2), a traction driving device (5) and the other end of the rack (1) are arranged at a preset distance, the traction driving device (4) is provided with a traction rope (41), the traction rope (41) is wound on the fixed pulley (2) and the movable pulley (3), the fixed pulley (2) and the movable pulley (3) are driven to rotate through retraction and release of the traction rope (41) to realize lifting movement of the movable pulley (3), when the movable pulley (3) rises to abut against the fixed pulley (2), the traction rope (41) is held to drive the rack (1) to slide, and a rigging (6) is arranged on a pulley seat of the movable pulley (3).
2. A bridge deck crane according to claim 1, wherein: the traction rope is characterized by further comprising a guide piece (5) arranged at the bottom of the rack (1), and the traction rope (41) penetrates through the guide piece (5) and is wound on the fixed pulley (2) and the movable pulley (3).
3. A bridge deck crane according to claim 2, wherein: the guide piece (5) adopts a guide wheel, and a guide groove matched with the traction rope (41) is formed on the periphery of the guide wheel.
4. A bridge deck crane according to claim 1, wherein: the rack (1) comprises a bottom frame (11), a top frame (12), a first supporting rod (13), a second supporting rod (14) and diagonal pulling rods (15), wherein the width of the bottom frame (11) is larger than that of the top frame (12), the length of the bottom frame (11) is equivalent to that of the top frame (12), the top frame (12) is positioned above the bottom frame (11) in an inclined manner, two sides of one end of the bottom frame (11) are fixedly connected with two sides of one end of the top frame (12) through the first supporting rod (13), two sides of the other end of the bottom frame (11) are hinged with two sides of the other end of the top frame (12) through the diagonal pulling rods (15) respectively to form a prismatic table structure with wide bottom and narrow top, two sides of one end, which is fixedly provided with the first supporting rod (13), of the bottom frame (11) are fixedly connected with two sides of one end, which is fixedly provided with the diagonal pulling rods (15), of the top frame, the two opposite sides between the bottom frame (11) and the top frame (12) are matched with the first supporting rod (13), the second supporting rod (14) and the diagonal draw bar (15) to form two triangular structures.
5. A bridge deck crane according to claim 4, wherein: the fixed pulley (2) is rotatably arranged at one end of the top frame (12) fixed with a first supporting rod (13).
6. A bridge deck crane according to claim 4, wherein: the guide piece (5) is arranged on the bottom frame (11) and is positioned between two second support rods (14) which are oppositely arranged.
7. A bridge deck crane according to claim 1, wherein: the fixed pulley (2) and the movable pulley (3) are correspondingly arranged in groups up and down.
8. A bridge deck crane according to claim 1, wherein: the traction driving device (4) adopts a winch.
9. A bridge deck crane according to claim 1, wherein: the rigging (6) employs shackles, such as hooks, tensioners, clenchers or collars.
10. Use of a bridge deck crane for breaking a bridge according to any one of claims 1 to 9, the bridge body being formed by splicing several sections of box girders (8), characterized in that: fixing a frame (1) and a traction driving device (4) on a bridge floor at a preset distance, binding and fixing a box girder (8) to be disassembled through a rope, then suspending the box girder on a rigging (6), then disassembling the box girder (8), lowering a traction rope (41) of the traction driving device (4) to drive a fixed pulley (2) and a movable pulley (3) to rotate so as to lower the box girder (8) onto a barge on a river surface, taking the rope off the box girder (8), and releasing the frame (1) and the bridge floor to be fixed so as to enable the frame (1) to slide relative to the bridge floor, rolling the traction rope (41) of the traction driving device (4) to drive the fixed pulley (2) and the movable pulley (3) to rotate so as to lift the rope suspended on the rigging (6), when the movable pulley (3) rises to abut against the fixed pulley (2), the traction rope (41) is held so as to drive the frame (1) to slide towards one end of the traction driving device (4) to a next position, and fixing the frame (1) on the bridge floor, binding and fixing the box girder (8) to be disassembled through a rope, then suspending the box girder on the rigging (6), continuously circulating the corresponding steps, and executing multiple hoisting operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131177.0A CN111252683A (en) | 2020-02-28 | 2020-02-28 | Bridge deck crane and application method thereof applied to bridge dismantling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131177.0A CN111252683A (en) | 2020-02-28 | 2020-02-28 | Bridge deck crane and application method thereof applied to bridge dismantling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111252683A true CN111252683A (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010131177.0A Pending CN111252683A (en) | 2020-02-28 | 2020-02-28 | Bridge deck crane and application method thereof applied to bridge dismantling |
Country Status (1)
| Country | Link |
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| CN (1) | CN111252683A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891921A (en) * | 2020-08-27 | 2020-11-06 | 中铁大桥局集团第一工程有限公司 | Turning device for steel tube arch segment |
| CN113026583A (en) * | 2021-03-09 | 2021-06-25 | 中交一公局第二工程有限公司 | Hoisting and dismantling method for variable cross-section prestressed continuous box girder bridge floor crane |
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| CN205469056U (en) * | 2016-03-09 | 2016-08-17 | 中国石油化工股份有限公司天然气川气东送管道分公司 | Light -duty fast cableway power traveling system for loading |
| CN109322251A (en) * | 2018-12-03 | 2019-02-12 | 中交第四公路工程局有限公司 | A kind of fixed structure and fixing means of suspension cable bridge section lifting hoisting platform |
| CN208995928U (en) * | 2018-09-09 | 2019-06-18 | 中交路桥建设有限公司 | A kind of multi-functional erection crane suitable for composite beam construction |
| CN212315387U (en) * | 2020-02-28 | 2021-01-08 | 佛山市粤优创钢结构有限公司 | Bridge floor crane |
| CN117886229A (en) * | 2024-03-13 | 2024-04-16 | 河南省第二建设集团有限公司 | Multifunctional integrated rail type lifting mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205469056U (en) * | 2016-03-09 | 2016-08-17 | 中国石油化工股份有限公司天然气川气东送管道分公司 | Light -duty fast cableway power traveling system for loading |
| CN208995928U (en) * | 2018-09-09 | 2019-06-18 | 中交路桥建设有限公司 | A kind of multi-functional erection crane suitable for composite beam construction |
| CN109322251A (en) * | 2018-12-03 | 2019-02-12 | 中交第四公路工程局有限公司 | A kind of fixed structure and fixing means of suspension cable bridge section lifting hoisting platform |
| CN212315387U (en) * | 2020-02-28 | 2021-01-08 | 佛山市粤优创钢结构有限公司 | Bridge floor crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111891921A (en) * | 2020-08-27 | 2020-11-06 | 中铁大桥局集团第一工程有限公司 | Turning device for steel tube arch segment |
| CN113026583A (en) * | 2021-03-09 | 2021-06-25 | 中交一公局第二工程有限公司 | Hoisting and dismantling method for variable cross-section prestressed continuous box girder bridge floor crane |
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