CN114960448B - Hoisting equipment for multi-span steel box girder construction and construction process thereof - Google Patents
Hoisting equipment for multi-span steel box girder construction and construction process thereof Download PDFInfo
- Publication number
- CN114960448B CN114960448B CN202210678462.3A CN202210678462A CN114960448B CN 114960448 B CN114960448 B CN 114960448B CN 202210678462 A CN202210678462 A CN 202210678462A CN 114960448 B CN114960448 B CN 114960448B
- Authority
- CN
- China
- Prior art keywords
- box girder
- steel box
- groove
- rack
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
-
- 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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
-
- 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
- E01D21/10—Cantilevered erection
- E01D21/105—Balanced cantilevered erection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The application relates to hoisting equipment for multi-span steel box girder construction and a construction process thereof, and belongs to the technical field of road and bridge construction. The application can improve the problem of inclination of the steel box girder body while ensuring the hoisting safety, and improves the installation efficiency of the steel box girder body in the construction process.
Description
Technical Field
The application belongs to the technical field of road bridge construction, and particularly relates to hoisting equipment for multi-span steel box girder construction and a construction process thereof.
Background
Nowadays, automobiles are quite common in families, so that the pressure of road traffic is increased day by day, and the construction of viaducts and overhead roads can relieve traffic pressure to a certain extent, realize rapid traffic passage, shorten the distance between cities and promote the construction and development of cities to a certain extent.
With the increase of viaduct construction, a few large-span steel box girders are not lack for construction; however, because the steel box girder body is large, large-scale machines such as a bridge girder erection machine are usually used in the erection process, but under the condition that the bridge girder erection machine cannot be used, steel wire ropes (or hanging strips) are usually used for binding the steel box girder through the hanging holes, and then rope belts are hung on gantry cranes or crane hooks, so that the steel box girder is carried and erected.
Disclosure of Invention
In order to improve the technical problems, the application provides hoisting equipment for multi-span steel box girder construction and a construction process thereof.
In a first aspect, the application provides hoisting equipment for multi-span steel box girder construction, which adopts the following technical scheme:
the utility model provides a lifting device for construction of multispan steel case roof beam, includes lifting machine and balanced back timber, the upper end of balanced back timber is equipped with the lifting hole that is used for being connected with the lifting machine, the lower extreme of balanced back timber is equipped with the link, link length direction's both ends rotate and are connected with the connecting rod, the lower extreme of connecting rod is equipped with the screw thread section that is used for being connected with the steel case roof beam body, and steel case roof beam body width direction's both ends are equipped with the screw hole, screw thread section and screw hole threaded connection.
Through adopting above-mentioned technical scheme, when hoisting steel case roof beam body, start the loop wheel machine, with balanced back timber handling to the top of steel case roof beam body, later on, aim at the screw thread section corresponding screw hole on the steel case roof beam body, rotate the connecting rod for screw thread section and corresponding screw hole accomplish threaded connection. And finally, starting the crane to lift the balance top beam, and lifting the threaded section by the balance top beam through the connecting rod, so as to drive the steel box girder body to lift upwards, and lifting the steel box girder body. Because steel case roof beam body is the rigid object at the in-process of hoist and mount, compare with traditional wire rope and suspender, be difficult for producing the deformation, rigidity and stability all have great promotion, when having guaranteed hoist and mount security, can improve the problem that the steel case roof beam body takes place the slope to the steel case roof beam body of being convenient for is in hoist and mount in-process and hoist and mount the stability of position when accomplishing, and then improves the installation effectiveness of steel case roof beam body in the work progress.
Optionally, the lower extreme of screw thread section is equipped with the bayonet socket, the bayonet socket can be dismantled and be connected with the socket, the upper end and the steel case roof beam body butt of socket, be equipped with the jack groove with the bayonet socket looks adaptation on the socket, be equipped with the joint mechanism that is used for restricting the socket and takes place to remove along self axial on the bayonet socket.
Through adopting above-mentioned technical scheme, make screw thread section and screw hole threaded connection back at the rotation connecting rod, aim at the bayonet socket with the grafting groove on the bayonet socket and press for the grafting is accomplished to grafting head and grafting groove, simultaneously triggers bayonet joint mechanism and is connected with the bayonet socket, thereby accomplishes the installation of bayonet socket. Through the setting of bayonet socket, when the threaded connection department of screw thread section and screw hole department takes place wearing and tearing, the bayonet socket plays the effect of reserve support to reduce the condition that the steel case roof beam body took place to fall in the hoist and mount in-process, reduce the potential safety hazard.
Optionally, the connector is last to be equipped with the mounting groove, joint mechanism includes joint piece and first elastic component, the diapire fixed connection of one end and mounting groove of first elastic component, the other end and joint piece fixed connection, be equipped with the joint groove on the inner wall of connector, joint groove and joint piece looks adaptation.
Through adopting above-mentioned technical scheme, when the installation plug seat, bulldoze the plug seat with the direction of plug seat towards the plug seat behind the jack-in groove alignment plug seat, press the joint piece at this in-process for the joint piece shrink mounting groove in, first elastic component is compressed, continues bulldozes the plug seat, makes the plug seat all insert in the joint groove. At this time, the mounting groove moves to the position department relative with the joint groove, and first elastic component resets, in inserting the joint groove with the joint piece bullet, realizes the joint in joint piece and joint groove to realize the installation of bayonet socket. Simple structure is convenient for improve installation effectiveness.
Optionally, the joint piece includes integrated into one piece's cylinder portion and right angle wedge portion, cylinder portion and first elastic component fixed connection, the one end that first elastic component was kept away from to right angle wedge portion is equipped with the inclined plane, the inclined plane slope sets up downwards, works as when first elastic component is in under the natural state, the lower extreme on inclined plane and the inside wall top parallel and level of mounting groove, works as when first elastic component is in minimum compression length, right angle wedge portion is whole to be located the mounting groove.
Through adopting above-mentioned technical scheme, so, at the connection in-process of bayonet socket and bayonet joint, when the inclined plane of right angle wedge portion moved the opening part of jack groove, the lateral wall top extrusion right angle wedge portion of jack groove continued to promote the bayonet socket towards the direction of bayonet joint, need not additionally to press the joint piece, can make the whole compression of right angle wedge portion go into the mounting groove in to improve installation effectiveness.
Optionally, still include connecting bottom plate, connecting bottom plate's lower extreme center is equipped with the forked tail slider, is equipped with the forked tail spout on the steel case roof beam body along self length direction, the lateral wall of steel case roof beam body is passed to the one end of forked tail spout, the forked tail slider slides with the inner wall of forked tail spout and is connected, be equipped with first spacing groove on the lateral wall of connecting rod, connecting bottom plate's upper end and the upper end inside wall butt of first spacing groove, connecting bottom plate's lower extreme and the lower extreme inside wall butt of first spacing groove, connecting bottom plate is close to the one end and the diapire butt of first spacing groove of connecting rod.
Through adopting above-mentioned technical scheme, after accomplishing the installation of bayonet socket, aim at the forked tail slider forked tail spout to wear the one end embedding of tapping the case roof beam body with the forked tail slider from the forked tail spout, make forked tail slider and forked tail spout accomplish the cooperation and be connected. And then, pushing the connecting bottom plate to move towards the connecting rod until the connecting bottom plate enters the first limit groove, and completing the installation of the connecting bottom plate. So, when screw thread section and screw hole, plug and the junction of plug seat take place the damage simultaneously, through the setting of connecting plate for steel case roof beam body carries out effectual connection with the connecting rod, can further improve the safety in utilization of this lifting device, reduces the potential safety hazard.
Optionally, the both ends of connecting bottom plate length direction are equipped with the limiting plate, the limiting plate is located on the connecting bottom plate towards one side of connecting rod, two one side that the connecting rod kept away from each other is equipped with the second spacing groove, the upper end of limiting plate and the upper end inside wall butt in second spacing groove, the lower extreme of limiting plate and the lower extreme inside wall butt in second spacing groove, two the opposite one side of limiting plate respectively with the diapire butt in adjacent second spacing groove.
Through adopting above-mentioned technical scheme, through limiting plate and the setting of second spacing groove, realized the location installation of limiting plate and connecting rod, reduce the hoist and mount in-process connecting rod and take place pivoted condition to reduce the phenomenon that screw thread section takes place to break away from with the screw hole, improve this hoist and mount mechanism's hoist and mount stability and security.
Optionally, be equipped with the installation cavity in the screw thread section, the upper end of installation cavity extends to the lower extreme inside of connecting rod, the lower extreme of installation cavity extends to the upper end inside of plug, be equipped with the gear in the installation cavity, the gear rotates with the chamber wall of installation cavity to be connected, the gear meshes simultaneously and has first rack and second rack, the tooth face of first rack and second rack sets up relatively, first rack slides with the upper end chamber wall of installation cavity and is connected, the second rack slides with the lower extreme chamber wall of installation cavity and is connected, the direction of seting up of first spacing groove and mounting groove is the same, the one end that first rack is close to first spacing groove and the lateral wall butt of connecting bottom plate, the one end that the second rack worn out the mounting groove diapire and the one end butt that the cylinder portion is close to the mounting groove diapire.
Through adopting above-mentioned technical scheme, at the installation of connecting bottom plate, connecting bottom plate removes towards the direction of connecting rod, and one side that connecting bottom plate is close to the connecting rod contacts the back with first rack, promotes that first rack removes towards the direction of keeping away from first spacing groove opening part, and first rack drives gear rotation, and the gear drives the direction that the second rack moved towards being close to the joint piece. And after the connecting bottom plate is installed in place, one end of the first rack, which is close to the first limiting groove, is abutted with the side wall of the connecting bottom plate, and one end of the second rack, which penetrates out of the bottom wall of the mounting groove, is abutted with one end of the column body, which is close to the bottom wall of the mounting groove. Therefore, the second rack can prop against the clamping block, misoperation or damage failure of the first elastic piece in the using process is reduced, the clamping block is retracted into the mounting groove, the using safety of the hoisting equipment is further improved, and potential safety hazards are reduced.
Optionally, one end that first rack kept away from the connection bottom plate is equipped with the second elastic component, one end that second elastic component kept away from first rack and the chamber wall fixed connection of installation cavity.
Through adopting above-mentioned technical scheme, after accomplishing the hoist and mount of steel case roof beam body, take off the connection bottom plate, take place the separation with the connecting rod, under the condition that the second elastic component reset, the second elastic component promotes first rack and deviates from the second elastic component and remove to drive gear rotation, gear rotation drives the second rack and deviates from the joint piece and remove, until in the second rack withdraws back the installation cavity, at this moment, the joint piece can retract in the mounting groove, the dismantlement of convenient bayonet socket, thereby be convenient for hoist and mount next steel case roof beam body.
In a second aspect, the application also provides a construction process for multi-span steel box girder construction, which comprises the following construction steps:
s1: gradually transporting each steel box girder body to a hoisting facility by adopting a large-sized flat car according to the sequence of the steel box girder bodies in the design drawing;
s2: hoisting each steel box girder body onto an assembly platform block by block according to a certain sequence by using a hoisting facility;
s3: pulling the steel box girder body towards the pier by using a winch traction technology, positioning and assembling, and installing the steel box girder body on the corresponding pier;
s4: after the assembly of one group of steel box girder bodies and the bridge piers is completed, the positioning assembly of the next group of steel box girder bodies is continued until the assembly of all the steel box girder bodies is completed;
the hoisting facilities in the step S1 and the step S2 adopt the hoisting equipment for multi-span steel box girder construction.
Through adopting above-mentioned technical scheme, because steel case roof beam body is at the in-process of hoist and mount, compare with traditional wire rope and suspender, foretell lifting means is difficult for producing the deformation, rigidity and stability all have great promotion, when having guaranteed hoist and mount security, can improve the problem that steel case roof beam body takes place to incline to the steel case roof beam body is convenient for in the hoist and mount in-process and hoist and mount stability of maintaining the position when accomplishing, and then improves the installation effectiveness of steel case roof beam body in the work progress
In summary, the present application includes at least one of the following beneficial technical effects:
1. because the steel box girder body is the rigid object in the process of hoisting, compared with the traditional steel wire rope and the hanging belt, the connecting rod and the connecting frame are not easy to deform, the rigidity and the stability are greatly improved, the hoisting safety is ensured, and the problem that the steel box girder body is inclined can be solved, so that the steel box girder body is convenient to adjust the position and maintain the stability of the position in the hoisting process and the hoisting completion, and the installation efficiency of the steel box girder body in the construction process is improved
2. Through the arrangement of the plug seat, when the threaded connection part of the threaded section and the threaded hole is worn, the plug seat plays a role in standby support, so that the falling condition of the steel box girder body in the hoisting process is reduced, and the potential safety hazard is reduced;
3. when the screw thread section and the junction of screw hole, plug and bayonet socket take place the damage simultaneously, through the setting of connecting plate for steel case roof beam body carries out effectual connection with the connecting rod, can further improve the safety in utilization of this lifting device, reduces the potential safety hazard.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is an exploded view of a connector embodying an embodiment of the present application.
Fig. 3 is a cut-away view of a snap-in mechanism embodying an embodiment of the present application.
Fig. 4 is a schematic structural view of a first limit groove and a second limit groove in an embodiment of the present application.
Reference numerals illustrate: 1. a crane; 2. balancing the top beam; 21. a hoisting hole; 22. a connecting frame; 23. hoisting a short rod; 3. a connecting rod; 31. a threaded section; 32. a plug; 321. a mounting groove; 33. a first limit groove; 34. the second limit groove; 4. a steel box girder body; 41. a threaded hole; 42. dovetail grooves; 5. a socket; 51. a plug-in groove; 511. a clamping groove; 52. a through hole; 6. a clamping mechanism; 61. a clamping block; 611. a column portion; 612. a right angle wedge portion; 6121. an inclined plane; 62. a first elastic member; 7. a connecting bottom plate; 71. dovetail slide blocks; 72. a limiting plate; 8. a mounting cavity; 81. a gear; 82. a first rack; 821. a second elastic member; 83. and a second rack.
Detailed Description
The present application will be described in further detail with reference to fig. 1-4.
In a first aspect, the embodiment of the application discloses hoisting equipment for multi-span steel box girder construction.
Referring to fig. 1 and 2, a hoisting device for multi-span steel box girder construction comprises a crane 1 and a balance top beam 2, wherein a hoisting hole 21 for connecting with the crane 1 is formed in the upper end of the balance top beam 2, and a connecting frame 22 is fixedly connected to the lower end of the balance top beam 2. The connecting rod 3 is connected with the rotation of link 22 length direction's both ends, and the lower extreme integrated into one piece of connecting rod 3 has the screw thread section 31 that is used for being connected with steel case roof beam body 4, and two screw holes 41 have all been seted up at steel case roof beam body 4 width direction's both ends and two screw holes 41 of same width direction respectively with two screw thread section 31 threaded connection on the same link 22.
When the steel box girder body 4 is hoisted, the crane 1 is started, the balance top beam 2 is hoisted above the steel box girder body 4, then the threaded section 31 is aligned with the corresponding threaded hole 41 on the steel box girder body 4, and the connecting rod 3 is rotated, so that the threaded section 31 and the corresponding threaded hole 41 are in threaded connection. Finally, the crane 1 is started to lift the balance top beam 2, and the balance top beam 2 pulls up the threaded section 31 through the connecting rod 3, so that the steel box girder body 4 is driven to lift upwards, and the steel box girder body 4 is lifted. Because steel case roof beam body 4 is the rigid object at the in-process of hoist and mount, compare with traditional wire rope and suspender, be difficult for producing the deformation, rigidity and stability all have great promotion, when having guaranteed hoist and mount security, can improve the problem that steel case roof beam body 4 takes place the slope to the steel case roof beam body 4 of being convenient for is in the hoist and mount in-process and the stability of position adjustment and maintenance position when hoist and mount are accomplished, and then improves the installation effectiveness of steel case roof beam body 4 in the work progress.
In addition, after the hoisting is completed, the filling blocks matched with the threaded holes 41 can be manufactured, the threaded holes 41 on the steel box girder body 4 are filled, the upper end surface of the steel box girder body 4 is smooth and has no pits, and therefore the bridge deck quality of a bridge formed by subsequent construction is improved.
Referring to fig. 2, in order to save production materials of the balance top beam 2, the dead weight of the balance top beam 2 is reduced on the premise of ensuring the structural strength of the balance top beam 2, so that the lifting load of the crane 1 is reduced, the balance top beam 2 is of a hollow shell structure, the lifting hole 21 is communicated with the interior of the balance top beam 2, the lifting short rod 23 is fixedly connected with the interior of the shell of the balance top beam 2, and the lifting short rod 23 is positioned in the lifting hole 21. In this way, the lifting hook is conveniently stretched into the mounting hole by the lifting machine 1 and hooked with the lifting short rod 23, and the connection efficiency of the lifting machine 1 and the balance top beam 2 is improved.
Referring to fig. 2 and 3, a plug 32 is coaxially fixed to the lower end of the threaded section 31, the outer diameter of the thread of the threaded section 31 is equal to the diameter of the cross section of the connecting rod 3, and the inner diameter of the thread of the threaded section 31 is equal to the diameter of the cross section of the plug 32. The plug connector 32 is detachably connected with a plug seat 5, and the upper end of the plug seat 5 is abutted with the steel box girder body 4. The socket 5 is provided with a socket groove 51 matched with the plug 32, the plug 32 is provided with a clamping mechanism 6, and the clamping mechanism 6 is used for limiting the axial movement of the socket 5. Thus, after the connecting rod 3 is rotated to make the threaded section 31 in threaded connection with the threaded hole 41, the inserting groove 51 on the inserting seat 5 is aligned with the inserting head 32 and pressed, so that the inserting head 32 and the inserting groove 51 are inserted, and meanwhile, the trigger pin mechanism 6 is connected with the inserting seat 5, thereby completing the installation of the inserting seat 5. Through the setting of bayonet socket 5, when the threaded connection department of screw thread section 31 and screw hole 41 department takes place wearing and tearing, bayonet socket 5 plays the effect of reserve support to reduce the condition that hoist and mount in-process steel case roof beam body 4 takes place to fall, reduce the potential safety hazard.
Referring to fig. 3, a mounting groove 321 is formed in a side wall of the plug 32, the clamping mechanism 6 includes a clamping block 61 and a first elastic member 62, one end of the first elastic member 62 is fixedly connected with a bottom wall of the mounting groove 321, and the other end is fixedly connected with the clamping block 61. The inner side wall of the inserting groove 51 is provided with a clamping groove 511, and the clamping groove 511 is matched with the clamping block 61. In this embodiment, the first elastic member 62 is a coil compression spring. Thus, when the socket 5 is mounted, the socket 5 is pushed towards the direction of the socket 32 after the socket groove 51 is aligned with the socket 32, and the clamping block 61 is pressed in the process, so that the clamping block 61 is retracted into the mounting groove 321, the first elastic piece 62 is compressed, and the socket 5 is pushed continuously, so that the socket 32 is completely inserted into the clamping groove 511. At this time, the mounting groove 321 moves to a position opposite to the clamping groove 511, the first elastic member 62 resets, and the clamping block 61 is sprung into the clamping groove 511, so that the clamping between the clamping block 61 and the clamping groove 511 can be realized, and the mounting of the socket 5 is realized.
Referring to fig. 3, the clamping block 61 includes an integrally formed cylinder portion 611 and a right angle wedge portion 612, the cylinder portion 611 is fixedly connected with the first elastic member 62, one end of the right angle wedge portion 612, which is far away from the first elastic member 62, is provided with an inclined surface 6121, and the inclined surface 6121 is arranged obliquely downward. When the first elastic member 62 is in a natural state, the lower end of the inclined surface 6121 is flush with the top end of the inner side wall of the mounting groove 321, and when the first elastic member 62 is in the minimum compression length, the right angle wedge portion 612 is entirely located in the mounting groove 321. In this way, in the connection process of the socket 5 and the socket 32, when the inclined surface 6121 of the right-angle wedge portion 612 moves to the opening of the socket 51, the top end of the side wall of the socket 51 presses the right-angle wedge portion 612, and the socket 5 is pushed towards the direction of the socket 32 continuously, so that the right-angle wedge portion 612 is compressed into the mounting groove 321 without additionally pressing the clamping block 61, and the mounting efficiency is improved.
Referring to fig. 3, a through hole 52 is formed in the sidewall of the socket 5, the through hole 52 communicates with the socket groove 51, the lower end portion of the through hole 52 merges with the locking groove 511 and communicates with the mounting groove 321, and the upper end portion of the through hole 52 is closed by the sidewall of the socket 32. In this way, when the socket 5 is disassembled, the columnar tool matched with the through hole 52 is used, the columnar tool is inserted into the through hole 52 until the columnar tool is blocked by the side wall of the plug 32, the clamping block 61 can be pushed to be completely retracted into the mounting groove 321, and at the moment, the socket 5 can be pulled out, so that the detachable connection between the socket 5 and the plug 32 is realized.
Referring to fig. 2 and 4, the hoisting device further comprises a connecting bottom plate 7, a dovetail sliding block 71 is fixedly connected to the center of the lower end of the connecting bottom plate 7, a dovetail sliding groove 42 is formed in the steel box girder body 4 along the length direction of the steel box girder body, one end of the dovetail sliding groove 42 penetrates through the side wall of the steel box girder body 4, and the dovetail sliding block 71 is in sliding connection with the inner wall of the dovetail sliding groove 42. The side wall of the connecting rod 3 is provided with a first limit groove 33, the upper end of the connecting bottom plate 7 is abutted with the inner side wall of the upper end of the first limit groove 33, the lower end of the connecting bottom plate 7 is abutted with the inner side wall of the lower end of the first limit groove 33, and one end of the connecting bottom plate 7, which is close to the connecting rod 3, is abutted with the bottom wall of the first limit groove 33.
After the installation of the socket 5 is completed, the dovetail slide 71 is aligned with the dovetail chute 42, and the dovetail slide 71 is inserted from the dovetail chute 42 through one end of the steel box girder body 4, so that the dovetail slide 71 and the dovetail chute 42 are completed in cooperation connection. Subsequently, the connection base plate 7 is pushed to move toward the connection rod 3 until the connection base plate 7 enters the first limit groove 33, and the installation of the connection base plate 7 is completed. So, when screw thread section 31 and screw hole 41, plug 32 take place the damage simultaneously with the junction of plug seat 5, through the setting of connecting plate 7 for steel case roof beam body 4 carries out effectual connection with connecting rod 3, can further improve the safety in utilization of this lifting device, reduces the potential safety hazard.
Referring to fig. 2 and 4, the two ends of the connection base plate 7 in the length direction are fixedly connected with a limiting plate 72, and the limiting plate 72 is positioned on one side of the connection base plate 7 facing the connection rod 3. The second spacing groove 34 has been seted up to one side that two connecting rods 3 kept away from each other, and the upper end of limiting plate 72 and the upper end inside wall butt of second spacing groove 34, the lower extreme of limiting plate 72 and the lower extreme inside wall butt of second spacing groove 34, and two opposite sides of limiting plate 72 respectively with the diapire butt of adjacent second spacing groove 34. So, through limiting plate 72 and the setting of second spacing groove 34, realized the location installation of limiting plate 72 and connecting rod 3, reduce the in-process connecting rod 3 and take place pivoted condition to reduce the phenomenon that screw thread section 31 takes place to break away from with screw hole 41, improve this hoist and mount mechanism's hoist and mount stability and security.
Referring to fig. 3, a mounting cavity 8 is formed in the screw section 31, the upper end of the mounting cavity 8 extends into the lower end of the connecting rod 3, and the lower end of the mounting cavity 8 extends into the upper end of the plug 32. The gear 81 is installed in the installation cavity 8, the gear 81 is rotationally connected with the cavity wall of the installation cavity 8, the gear 81 is simultaneously meshed with the first rack 82 and the second rack 83, and tooth surfaces of the first rack 82 and the second rack 83 are oppositely arranged. The first rack 82 is slidably connected with the upper end cavity wall of the installation cavity 8, the second rack 83 is slidably connected with the lower end cavity wall of the installation cavity 8, and the first limit groove 33 and the installation groove 321 are arranged in the same direction. One end of the first rack 82, which is close to the first limit groove 33, is abutted against the side wall of the connecting bottom plate 7, and one end of the second rack 83, which penetrates out of the bottom wall of the mounting groove 321, is abutted against one end of the column 611, which is close to the bottom wall of the mounting groove 321.
In the installation of the connection bottom plate 7, the connection bottom plate 7 moves towards the direction of the connecting rod 3, and after one side, close to the connecting rod 3, of the connection bottom plate 7 contacts with the first rack 82, the first rack 82 is pushed to move towards the direction away from the opening of the first limiting groove, the first rack 82 drives the gear 81 to rotate, and the gear 81 drives the second rack 83 to move towards the direction close to the clamping block 61. Until the connecting bottom plate 7 is installed in place, one end of the first rack 82, which is close to the first limiting groove 33, is abutted against the side wall of the connecting bottom plate 7, and one end of the second rack 83, which penetrates out of the bottom wall of the mounting groove 321, is abutted against one end of the column 611, which is close to the bottom wall of the mounting groove 321. So, the second rack 83 can support against the clamping block 61, so that the situation that the clamping block 61 is retracted into the mounting groove 321 due to misoperation or damage failure of the first elastic piece 62 in the use process is reduced, the use safety of the hoisting equipment is further improved, and potential safety hazards are reduced.
Referring to fig. 3, a second elastic member 821 is fixedly connected to an end of the first rack 82 remote from the connection base plate 7, and an end of the second elastic member 821 remote from the first rack 82 is fixedly connected to a cavity wall of the installation cavity 8. In this embodiment, the second elastic member 821 is a coil compression spring. So, after the hoist and mount of steel case roof beam body 4 are accomplished, take off the back with connecting plate 7, take place the separation with connecting rod 3, under the condition that second elastic component 821 reset, second elastic component 821 promotes first rack 82 and deviates from second elastic component 821 and remove, thereby drive gear 81 and rotate, gear 81 rotates and drives second rack 83 and deviate from joint piece 61 and remove, until in the second rack 83 withdraws from installation cavity 8, at this moment, joint piece 61 can withdraw in the mounting groove 321, make things convenient for the dismantlement of bayonet socket 5, thereby be convenient for hoist and mount to next steel case roof beam body 4, and then improve holistic efficiency of construction in the steel case roof beam installation engineering.
Referring to fig. 2 and 4, in actual use, a latch may be inserted into the bottom wall of the dovetail slot 42, so as to reduce the occurrence of the situation that the second elastic member 821 is reset during the lifting process, thereby pushing the connection base plate 7 to be separated from the connection rod 3.
In a second aspect, the application also provides a construction process for multi-span steel box girder construction, which comprises the following construction steps:
s1: gradually transporting each steel box girder body 4 to a hoisting device by adopting a large-sized flat car according to the sequence of the steel box girder bodies 4 in the design drawing;
s2: hoisting each steel box girder body 4 to an assembly platform block by block according to a certain sequence by using hoisting equipment;
s3: pulling the steel box girder body 4 towards the pier by using a winch traction technology, positioning and assembling, and installing the steel box girder body 4 on the corresponding pier;
s4: after the assembly of one group of steel box girder bodies 4 and piers is completed, the positioning assembly of the next group of steel box girder bodies 4 is continued until the assembly of all the steel box girder bodies 4 is completed;
s5: after all the steel box girder bodies 4 are assembled, the structural strength of the steel box girder is checked, and engineering delivery is performed after the structural strength of the steel box girder passes the checking.
The hoisting facilities in the step S1 and the step S2 adopt the hoisting equipment for multi-span steel box girder construction.
So, because steel case roof beam body 4 is at the in-process of hoist and mount, compare with traditional wire rope and suspender, foretell lifting means is difficult for producing the deformation, and rigidity and stability all have great promotion, when having guaranteed hoist and mount security, can improve the problem that steel case roof beam body 4 takes place the slope to be convenient for steel case roof beam body 4 in hoist and mount in-process and the stability of maintaining the position when hoist and mount are accomplished, and then improve the installation effectiveness of steel case roof beam body 4 in the work progress.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. A lifting device for construction of multispan steel case roof beam, its characterized in that: the lifting device comprises a lifting machine (1) and a balance top beam (2), wherein a lifting hole (21) used for being connected with the lifting machine (1) is formed in the upper end of the balance top beam (2), a connecting frame (22) is arranged at the lower end of the balance top beam (2), connecting rods (3) are rotatably connected to the two ends of the connecting frame (22) in the length direction, threaded sections (31) used for being connected with a steel box girder body (4) are arranged at the lower end of the connecting rods (3), threaded holes (41) are formed in the two ends of the steel box girder body (4) in the width direction, and the threaded sections (31) are in threaded connection with the threaded holes (41);
the lower end of the threaded section (31) is provided with a plug connector (32), the plug connector (32) is detachably connected with a plug connector (5), the upper end of the plug connector (5) is in butt joint with the steel box girder body (4), the plug connector (5) is provided with a plug groove (51) matched with the plug connector (32), and the plug connector (32) is provided with a clamping mechanism (6) for limiting the plug connector (5) to move along the axial direction of the plug connector;
the plug connector (32) is provided with an installing groove (321), the clamping mechanism (6) comprises a clamping block (61) and a first elastic piece (62), one end of the first elastic piece (62) is fixedly connected with the bottom wall of the installing groove (321), the other end of the first elastic piece is fixedly connected with the clamping block (61), the inner wall of the plug connector (51) is provided with a clamping groove (511), and the clamping groove (511) is matched with the clamping block (61);
the clamping block (61) comprises a cylinder part (611) and a right-angle wedge part (612) which are integrally formed, the cylinder part (611) is fixedly connected with the first elastic piece (62), one end of the right-angle wedge part (612) far away from the first elastic piece (62) is provided with an inclined surface (6121), the inclined surface (6121) is obliquely downwards arranged, when the first elastic piece (62) is in a natural state, the lower end of the inclined surface (6121) is flush with the top end of the inner side wall of the mounting groove (321), and when the first elastic piece (62) is in the minimum compression length, the right-angle wedge part (612) is all positioned in the mounting groove (321);
the connecting bottom plate (7) is further arranged at the center of the lower end of the connecting bottom plate (7), a dovetail sliding groove (42) is formed in the steel box girder body (4) along the width direction of the steel box girder body, one end of the dovetail sliding groove (42) penetrates through the side wall of the steel box girder body (4), the dovetail sliding groove (71) is connected with the inner wall of the dovetail sliding groove (42) in a sliding mode, a first limit groove (33) is formed in the side wall of the connecting rod (3), the upper end of the connecting bottom plate (7) is in butt joint with the inner side wall of the upper end of the first limit groove (33), the lower end of the connecting bottom plate (7) is in butt joint with the inner side wall of the lower end of the first limit groove (33), and one end, close to the connecting bottom rod (3), of the connecting bottom plate (7) is in butt joint with the bottom wall of the first limit groove (33);
the two ends of the connecting bottom plate (7) in the length direction are provided with limiting plates (72), the limiting plates (72) are arranged on one side, facing the connecting rods (3), of the connecting bottom plate (7), the two connecting rods (3) are provided with second limiting grooves (34) on one side, far away from each other, of the connecting rods, the upper ends of the limiting plates (72) are in butt joint with the inner side walls of the upper ends of the second limiting grooves (34), the lower ends of the limiting plates (72) are in butt joint with the inner side walls of the lower ends of the second limiting grooves (34), and the opposite sides of the two limiting plates (72) are respectively in butt joint with the bottom walls of the adjacent second limiting grooves (34);
be equipped with installation cavity (8) in screw thread section (31), the upper end of installation cavity (8) extends to the lower extreme inside of connecting rod (3), the lower extreme of installation cavity (8) extends to the upper end inside of plug (32), be equipped with gear (81) in installation cavity (8), gear (81) are connected with the cavity wall rotation of installation cavity (8), gear (81) meshing has first rack (82) and second rack (83) simultaneously, the tooth face of first rack (82) and second rack (83) sets up relatively, the upper end cavity wall of first rack (82) and installation cavity (8) slides and is connected, the lower extreme cavity wall of second rack (83) and installation cavity (8) slides and is connected, the setting up the direction of first spacing groove (33) and mounting groove (321) is the same, the one end that first spacing groove (82) is close to first spacing groove (33) and the lateral wall butt of connecting bottom plate (7), the second rack (83) wear out rack (321) and are close to mounting groove (611) one end butt bottom wall one end.
2. The hoisting device for multi-span steel box girder construction according to claim 1, wherein: one end of the first rack (82) far away from the connecting bottom plate (7) is provided with a second elastic piece (821), and one end of the second elastic piece (821) far away from the first rack (82) is fixedly connected with the cavity wall of the installation cavity (8).
3. The construction process for multi-span steel box girder construction is characterized by comprising the following construction steps:
s1: gradually transporting each steel box girder body (4) to a hoisting facility by adopting a large-scale flat car according to the sequence of the steel box girder bodies (4) in a design drawing;
s2: hoisting each steel box girder body (4) to an assembly platform block by block according to a certain sequence by using a hoisting facility;
s3: pulling the steel box girder body (4) towards the pier by using a winch pulling technology, positioning and assembling, and installing the steel box girder body (4) on the corresponding pier;
s4: after the assembly of one group of steel box girder bodies (4) and the bridge piers is completed, the positioning assembly of the next group of steel box girder bodies (4) is continued until the assembly of all the steel box girder bodies (4) is completed;
wherein the hoisting facilities in the step S1 and the step S2 adopt the hoisting equipment for multi-span steel box girder construction according to any one of claims 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678462.3A CN114960448B (en) | 2022-06-16 | 2022-06-16 | Hoisting equipment for multi-span steel box girder construction and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210678462.3A CN114960448B (en) | 2022-06-16 | 2022-06-16 | Hoisting equipment for multi-span steel box girder construction and construction process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114960448A CN114960448A (en) | 2022-08-30 |
| CN114960448B true CN114960448B (en) | 2023-09-26 |
Family
ID=82963803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210678462.3A Active CN114960448B (en) | 2022-06-16 | 2022-06-16 | Hoisting equipment for multi-span steel box girder construction and construction process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114960448B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6231271B1 (en) * | 1999-04-05 | 2001-05-15 | Stab Cat, Inc | Apparatus and method for lifting piles |
| CN202323722U (en) * | 2011-11-11 | 2012-07-11 | 中铁八局集团第二工程有限公司 | Hanger used for bridge erecting machine |
| CN203998606U (en) * | 2014-07-30 | 2014-12-10 | 安徽省中冶重工机械有限公司 | Bridge Erector hoisting overhead travelling crane is from turning round levelling gear |
| CN204401474U (en) * | 2015-01-19 | 2015-06-17 | 重庆工业职业技术学院 | A kind of hoisting appliance of reinforcing steel bar concrete box erection |
| CN204715213U (en) * | 2015-04-27 | 2015-10-21 | 中铁工程机械研究设计院有限公司 | The stepless adjustable suspender of eccentric case beam |
| CN111517213A (en) * | 2020-06-06 | 2020-08-11 | 武汉耀华桥梁工程技术有限公司 | Self-tensioning box girder lifting appliance capable of adjusting lifting gravity center and operation method thereof |
| CN211664533U (en) * | 2020-01-17 | 2020-10-13 | 河南新江河起重机有限公司 | Rotary lifting appliance for lifting segmental beam |
| CN214495425U (en) * | 2021-03-24 | 2021-10-26 | 中国建筑第五工程局有限公司 | Accurate positioner of vertical PC component hoist and mount |
| CN214935269U (en) * | 2021-06-02 | 2021-11-30 | 合建卡特工业股份有限公司 | Multifunctional lifting appliance for large-section lifting |
| CN215797988U (en) * | 2021-08-18 | 2022-02-11 | 陕西昊良合众建筑工程有限公司 | Flexible suspension type transfer device based on building construction |
-
2022
- 2022-06-16 CN CN202210678462.3A patent/CN114960448B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6231271B1 (en) * | 1999-04-05 | 2001-05-15 | Stab Cat, Inc | Apparatus and method for lifting piles |
| CN202323722U (en) * | 2011-11-11 | 2012-07-11 | 中铁八局集团第二工程有限公司 | Hanger used for bridge erecting machine |
| CN203998606U (en) * | 2014-07-30 | 2014-12-10 | 安徽省中冶重工机械有限公司 | Bridge Erector hoisting overhead travelling crane is from turning round levelling gear |
| CN204401474U (en) * | 2015-01-19 | 2015-06-17 | 重庆工业职业技术学院 | A kind of hoisting appliance of reinforcing steel bar concrete box erection |
| CN204715213U (en) * | 2015-04-27 | 2015-10-21 | 中铁工程机械研究设计院有限公司 | The stepless adjustable suspender of eccentric case beam |
| CN211664533U (en) * | 2020-01-17 | 2020-10-13 | 河南新江河起重机有限公司 | Rotary lifting appliance for lifting segmental beam |
| CN111517213A (en) * | 2020-06-06 | 2020-08-11 | 武汉耀华桥梁工程技术有限公司 | Self-tensioning box girder lifting appliance capable of adjusting lifting gravity center and operation method thereof |
| CN214495425U (en) * | 2021-03-24 | 2021-10-26 | 中国建筑第五工程局有限公司 | Accurate positioner of vertical PC component hoist and mount |
| CN214935269U (en) * | 2021-06-02 | 2021-11-30 | 合建卡特工业股份有限公司 | Multifunctional lifting appliance for large-section lifting |
| CN215797988U (en) * | 2021-08-18 | 2022-02-11 | 陕西昊良合众建筑工程有限公司 | Flexible suspension type transfer device based on building construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114960448A (en) | 2022-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208869129U (en) | Telescopic building hoist day beam is set in elevator traction | |
| CN206110656U (en) | Scalable foldable integrally lift up tube formwork of elevartor shaft | |
| CN205314542U (en) | Construction liquid die plate device that climbs | |
| CN108002244B (en) | Hoisting system and method for high pier column steel bar formwork | |
| CN210048319U (en) | Traction type construction elevator with foldable top beam | |
| CN111910923A (en) | Integral hoisting type hoisting platform | |
| CN114606862A (en) | Pier bent cap climbing installation device | |
| CN114960448B (en) | Hoisting equipment for multi-span steel box girder construction and construction process thereof | |
| CN115787487B (en) | Construction method of continuous beam variable cross-section bridge fabrication machine | |
| CN113006145A (en) | Reverse construction method construction process for large-diameter working well movable formwork | |
| CN218434629U (en) | Lifting frame for tower type pier construction | |
| CN218145304U (en) | Adjustable lifting appliance | |
| CN216190569U (en) | Assembled wall body installation auxiliary device | |
| CN212802515U (en) | Integral hoisting type hoisting platform | |
| CN113511583B (en) | Multifunctional high-safety assembled building lifting clamp | |
| CN115231427A (en) | Pipe joint hoisting construction method and equipment | |
| CN108569646A (en) | A kind of assembled architecture wallboard mounting machine | |
| CN113829290B (en) | Sector block disassembly tool and disassembly inspection method thereof | |
| CN211395385U (en) | Box girder internal mold stripping trolley | |
| CN113585860A (en) | Device and method for mounting and dismounting double-arm holding pole | |
| CN114182966A (en) | Overhanging type unloading platform main beam | |
| CN219864146U (en) | Construction system for green building | |
| CN215052240U (en) | Hanging leg of cantilever perfusion bridge fabrication machine | |
| CN220807918U (en) | Multi-plate-beam series stretching equipment for full-length pedestal and multi-plate-beam prefabrication | |
| CN218371306U (en) | Mine hydraulic support dismouting mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |