CN114438904A

CN114438904A - Long-span through-type continuous steel truss pushing process

Info

Publication number: CN114438904A
Application number: CN202111578245.9A
Authority: CN
Inventors: 张部伟; 何进; 黄程; 徐金宇; 王发明; 徐敦敏; 包义锴
Original assignee: Second Engineering Co Ltd of China Railway 25th Bureau Group Co Ltd
Current assignee: Second Engineering Co Ltd of China Railway 25th Bureau Group Co Ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-06
Anticipated expiration: 2041-12-22
Also published as: CN114438904B

Abstract

The application relates to a large-span through-type continuous steel truss pushing process, and relates to the field of bridge erection technology. Which comprises the following steps: the support setting: an assembling support and a sliding support are arranged at the starting end of the steel truss girder, a first vertical jack is arranged on the assembling support, and a sliding shoe is arranged on a slideway of the sliding support; installing a steel truss girder: assembling a steel truss girder on the assembling support, wherein the steel truss girder is arranged on the first vertical jack and the sliding shoe; installing a guide beam: assembling a guide beam at the front end of the steel truss girder; and (3) dragging: dragging the guide beam and the steel truss beam towards the opposite bank of the river by a horizontal jack until the steel truss beam reaches the opposite bank of the river; and (3) beam falling: and the steel truss girder is descended onto the official pier through the cooperation of the girder falling equipment and the sleeper pile. This application has the setting that has reduced interim mound and support, reduces the effect to the influence of river course circuit.

Description

Long-span through-type continuous steel truss pushing process

Technical Field

The application relates to the field of bridge erection technology, in particular to a large-span through-type continuous steel truss pushing process.

Background

At present, the construction of large-span steel truss adopts full hall support method to be under construction usually, to steel truss structure, when being under construction through full hall support method, often need set up more interim mound and support and just can guarantee the stability of steel truss process of building, to the river that has the navigation requirement, interim mound and support set up the navigation that position and quantity can influence the ship.

Disclosure of Invention

In order to realize having reduced the setting of interim mound and support, reduce the purpose to the influence of river course circuit, this application provides a long-span bears continuous steel truss roof beam top and pushes away technology under.

The application provides a long-span is held down continuous steel truss and is pushed away technology and adopts following technical scheme:

a large-span through-type continuous steel truss pushing process comprises the following steps:

the support setting: an assembling support and a sliding support are arranged at the starting end of the steel truss girder, a first vertical jack is arranged on the assembling support, and a sliding shoe is arranged on a slideway of the sliding support;

installing a steel truss girder: assembling a steel truss girder on the assembling support, wherein the steel truss girder is arranged on the first vertical jack and the sliding shoe;

installing a guide beam: assembling a guide beam at the front end of the steel truss beam;

and (3) dragging: dragging the guide beam and the steel truss beam towards the opposite bank of the river by a horizontal jack until the steel truss beam reaches the opposite bank of the river;

and (3) beam falling: and the steel truss girder is descended onto the official pier through the cooperation of the girder falling equipment and the sleeper pile.

By adopting the technical scheme, the steel trussed beams are assembled on the assembling support, the steel trussed beams are dragged towards the opposite bank of the river by the horizontal jack, and the sliding support supports the steel trussed beams in the process until the steel trussed beams cross the two banks of the river; in the process of erecting the steel truss girder, the arrangement of temporary piers and supports is reduced, so that the influence on a river channel line is reduced.

Optionally, the equipment of falling the roof beam is including setting up the vertical jack of second on formal mound, still be provided with formal support on the formal mound, the pillow buttress is provided with a plurality of on formal mound, and is a plurality of the pillow buttress stacks on formal mound, be provided with a plurality of backing plates on the vertical jack of second, the steel longeron overlap joint is on the pillow buttress, the vertical jack of second makes the steel longeron break away from the pillow buttress with the jacking of steel longeron to take off one deck pillow buttress, then the vertical jack of second descends, makes the steel longeron overlap joint again on the pillow buttress, just backing plate and steel longeron on the vertical jack of second break away from to take off one deck backing plate, repeat this step and make the steel longeron support on formal support.

By adopting the technical scheme, an operator pours formal supports on the tops of the formal piers, a plurality of groups of superposed sleeper stacks are arranged on the tops of the formal piers, the height of each sleeper stack is close to the distance between the steel truss girder and the pier tops of the formal piers, the operator arranges a plurality of second vertical jacks on the pier tops of the formal piers, a plurality of base plates are arranged on the top ends of the second vertical jacks, the operator enables the steel truss girder to be lapped on each superposed sleeper stack by controlling each first vertical jack, then the operator starts each second vertical jack to jack the steel truss girder to separate the steel truss girder from the sleeper stack, the operator draws out one layer of superposed sleeper stacks to reduce the height, the operator lowers the steel truss girder to be lapped on the sleeper stacks by starting each second vertical jack, the operator draws out one layer of base plates on the second vertical jacks, and (3) reducing the height of the base plate, continuously controlling each second vertical jack to jack the steel trussed beam, separating the steel trussed beam from the sleeper pile, repeating the step to enable the steel trussed beam to gradually descend and be overlapped on the formal support, and finishing beam falling.

Optionally, the pillow buttress one side fixedly connected with locating piece, the constant head tank that supplies other locating pieces to peg graft is seted up to the pillow buttress opposite side, and is a plurality of the pillow buttress superposes on formal mound one by one.

Through adopting above-mentioned technical scheme, between two adjacent pillow buttress, the locating piece of one of them pillow buttress is pegged graft in the constant head tank of another pillow buttress for reduce the pillow buttress and superpose and take place the skew after receiving the extrusion of steel truss, the influence supports stability to steel truss, thereby leads to the condition of steel truss slope.

Optionally, be provided with the supporting seat between pillow buttress and the official mound, the supporting seat both sides all are provided with the lift cylinder, be provided with the lifting device that is used for separating one of them pillow buttress and other pillow buttress on the lift cylinder, still be provided with the thrustor that is used for releasing the supporting seat with the pillow buttress after separating on the supporting seat, supporting seat one side fixedly connected with curb plate, be provided with the collection device who is used for piling up the pillow buttress on the curb plate.

Through adopting above-mentioned technical scheme, when the vertical jack of second drove whole steel longeron rebound, steel longeron and pillow buttress separation, the operator starts lift cylinder and drives the pillow buttress from up the lifting of second floor pillow buttress down, make the separation of pillow buttress bottommost and all the other pillow buttress, then the operator pushes the pillow buttress of bottommost to collection device through thrustor, thrustor resets the back, operator control lift cylinder drives all the other pillow buttress overlap joints again on the supporting seat, realize the effect that automated control pillow buttress height reduces, it takes away the time that the pillow buttress consumes to reduce the manual work.

Optionally, the lifting device includes lifter plate, articulated slab, returning face plate and upset cylinder, lifter plate fixed connection is on the piston rod of lifter cylinder, articulated slab fixed connection is on the lifter plate, the returning face plate is articulated with the articulated slab, the cylinder body of upset cylinder articulates on the lifter plate, the piston rod of upset cylinder articulates on the returning face plate, fixedly connected with otic placode on the pillow buttress, the returning face plate butt is in the below of otic placode, be provided with on the articulated slab useful and carry out spacing diaphragm to returning face plate rotation angle.

By adopting the technical scheme, an operator starts the turnover cylinder to drive the turnover plate to turn over to abut against the transverse plate, the turnover plate is in a horizontal state at the moment, and the operator drives the turnover plate to lift by starting the lifting cylinder and abuts against the lower surface of the ear plate of one pillow stack, so that the pillow stack is conveniently lifted by the lifting cylinder; when the operator starts the turnover cylinder to reset the turnover plate, the turnover plate can not be abutted to any ear plate when the lifting cylinder is lifted.

Optionally, a limiting component for positioning the ear plate is arranged on the turnover plate, the limiting component comprises a movable plate, a convex block, a rack, a gear and a connecting rod, the movable plate is arranged on the turnover plate in a sliding mode, the rack is fixedly connected with the movable plate, the rack is connected to the turnover plate in a sliding mode, the gear is connected to the turnover plate in a rotating mode, the gear is meshed with the rack, the connecting rod is fixedly connected with the gear, the connecting rod is hinged to a piston rod of the turnover cylinder, the convex block is fixedly connected to the movable plate, a limiting groove is formed in the ear plate, and the convex block is inserted into the limiting groove.

By adopting the technical scheme, an operator starts the turnover cylinder to extend a piston rod of the turnover cylinder, the piston rod of the turnover cylinder extends to drive the turnover plate to turn over, the piston rod of the turnover cylinder is hinged with the connecting rod, the connecting rod is fixedly connected with the gear, and the gear is rotationally connected to the turnover plate, so that the turnover cylinder drives the connecting rod to turn over towards the direction far away from the movable plate and drive the gear to rotate in the turnover process of pushing the turnover plate to turn over, the gear rotates to drive the rack to move towards the turnover plate, and the rack is fixed with the movable plate and is connected to the turnover plate in a sliding manner, so that the rack moves to drive the movable plate to move towards the direction far away from the turnover plate; when the movable plate is turned to be in a horizontal state, the movable plate is in an extending state, and when the movable plate is driven to ascend by the lifting cylinder, the convex blocks on the movable plate are inserted into the limiting grooves in the lug plates.

Optionally, the turning plate is provided with a first limiting seat and a second limiting seat for limiting the turning angle of the gear, the first limiting seat and the second limiting seat are positioned at two sides of the gear, the moving plate is fixedly connected with a control rod, the turnover plate is provided with an installation groove, the control rod is arranged in the installation groove in a sliding manner, the control rod is fixedly connected with a top block, the turnover plate is provided with a locking groove communicated with the mounting groove, a locking rod is slidably arranged in the locking groove, one end of the locking rod is abutted against the top block, the turnover plate is provided with an accommodating groove communicated with the locking groove, a limiting ring is arranged in the containing groove in a sliding way, the limiting ring is fixedly connected on the locking rod, a locking spring is arranged between the limiting ring and the bottom wall of the containing groove, locking spring one end fixed connection is on the spacing ring, locking spring other end fixed connection is on the groove diapire of holding tank.

Through adopting above-mentioned technical scheme, the movable plate keeps away from each other with the returning face plate, the check lock lever butt is on the control lever, the returning face plate overturns under the effect of upset cylinder, check lock lever butt is on the articulated slab at the returning face plate upset in-process, make the kicking block can't move towards the check lock lever direction, thereby the removal of restriction movable plate, when the returning face plate upset to with the horizontal pole butt, the returning face plate is the horizontality, the draw-in groove aligns with the check lock lever this moment, under the continuous promotion of upset cylinder, drive connecting rod and gear revolve, make the rack move towards keeping away from the movable plate direction, and then drive the control lever and follow the movable plate and move together, the control lever removes and then drives the kicking block and move towards the check lock lever direction, the kicking block removes in-process and pushes away the control lever towards the draw-in groove gradually, thereby make the returning face plate keep the horizontality, the upset cylinder drives. The movable plate moves towards the direction of the turnover plate until the convex block abuts against the wall of the limiting groove close to the turnover plate, so that the limiting effect on the pillow stack is achieved, and the situation that the pillow stack shakes in the lifting process is reduced.

Optionally, the thrustor includes layer board, push pedal and top push cylinder, heavy groove has been seted up on the supporting seat, it is connected with the mount pad to slide in the groove to sink, push pedal fixed connection is on the mount pad, layer board fixed connection is close to in the push pedal the pillow buttress butt of supporting seat is on the layer board, and is close to the pillow buttress and the push pedal butt of supporting seat, the supporting seat is all offered the groove of stepping down that is used for conveniently holding the locating piece in the both sides that sink the groove.

Through adopting above-mentioned technical scheme, the operator control lift cylinder drives from down to the back of separating completely with the bottommost pillow buttress lifting of second floor pillow buttress, and the operator drives push pedal and layer board through the top pushes away the cylinder and promotes bottommost pillow buttress towards collection device.

Optionally, the supporting seat is provided with a sliding groove communicated with the abdicating groove corresponding to the two abdicating grooves, the sliding groove is connected with a locking block, the supporting seat is used for limiting the pillow stack close to the supporting seat, a double-shaft motor is arranged on the supporting seat, two output shafts of the double-shaft motor are fixedly connected with screw rods, the screw rods correspond to the locking blocks one to one, and the screw rods are in threaded connection with the corresponding locking blocks.

By adopting the technical scheme, the locking block is clamped in the abdicating groove in a normal state, and the positioning block is limited so as to reduce the moving situation of the pillow stack; when needing to push away the pillow buttress of bottom from the supporting seat, the operator drives the screw rod through starting biax motor and rotates to drive the latch segment and keep away from the groove direction of stepping down and remove the spacing effect of latch segment to the locating piece, the operator drives push pedal and layer board through the top push cylinder at last and promotes the pillow buttress of bottom towards collection device.

Optionally, the collecting device comprises a guide plate and a positioning plate, the side plate is fixedly connected to one side of the supporting seat, the guide plate is fixedly connected to the side plate vertically, the guide plate corresponds to the ear plates on the pillow stack one to one, the guide plate is inserted into the limiting grooves of the corresponding ear plates in an inserting mode, the positioning plate corresponds to the guide plate one to one, a base plate is arranged below the side plate, the guide plate is fixedly connected to the base plate through a vertical rod, a locking cylinder is fixedly connected to the base plate, and a piston rod of the locking cylinder is fixedly connected to the side plate.

Through adopting above-mentioned technical scheme, the operator starts the locking cylinder and drives the base plate and rise, make locating plate and the deflector separation that corresponds, then operator control top pushes away the cylinder and drives push pedal and layer board and remove bottom pillow buttress towards the curb plate direction, make spacing groove on the otic placode align with the deflector and the locating plate that correspond, the operator controls the base plate decline again, make the locating plate insert the spacing inslot that corresponds, and with the deflector butt that corresponds, last operator pushes away the cylinder through control top and drives push pedal and layer board and reset, remove the bearing effect of layer board to this pillow buttress, then this pillow buttress falls to the curb plate on along each deflector under the action of gravity.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of temporary piers and supports is reduced through a pushing process, so that the construction difficulty is reduced, and the influence on river traffic is reduced;

2. the operator mutually supports through lifting device, thrustor and the collection device on the supporting seat, realizes taking out from the automation of pillow buttress, reduces and carries out the successive layer when taking out from the time, the time and the manpower of consumption to the pillow buttress at the roof beam in-process manual work that fall.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying the supporting seat in the embodiment of the present application.

Fig. 3 is a schematic structural diagram for embodying a mount according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram for embodying a roll-over cylinder in the embodiment of the present application.

Fig. 5 is a schematic structural diagram for embodying a limiting assembly according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram for embodying a locking assembly according to an embodiment of the present application.

Fig. 7 is an enlarged schematic view of a portion a in fig. 6.

Fig. 8 is an exploded view of an embodiment of the present application for embodying a sink.

Fig. 9 is a cross-sectional view of an embodiment of the present application for embodying a locking segment.

Fig. 10 is a sectional view showing the positional relationship between the locking block and the positioning block according to the embodiment of the present application.

Description of reference numerals: 1. forming a formal pier; 11. a second vertical jack; 12. a base plate; 13. formal support; 14. pillow and buttress; 15. positioning blocks; 16. positioning a groove; 17. a supporting seat; 2. a lifting cylinder; 21. a lifting plate; 22. a hinge plate; 23. a turnover plate; 24. turning over the air cylinder; 25. an ear plate; 26. a limiting groove; 27. a transverse plate; 28. a limit nut; 29. a guide bar; 3. a limiting component; 31. moving the plate; 32. a bump; 33. a rack; 34. a gear; 35. a connecting rod; 4. a first limiting seat; 41. a second limiting seat; 42. a locking assembly; 5. a control lever; 51. mounting grooves; 52. a top block; 53. a bevel; 54. a locking groove; 55. a locking lever; 56. accommodating grooves; 57. a limiting ring; 58. a locking spring; 59. a card slot; 6. a support plate; 61. pushing the plate; 62. a pushing cylinder; 63. a mounting seat; 64. sinking a groove; 65. a yielding groove; 66. a chute; 67. a locking block; 68. a screw; 69. a double-shaft motor; 691. an accommodating chamber; 7. a side plate; 71. a guide plate; 72. positioning a plate; 73. a substrate; 74. a locking cylinder; 75. erecting a rod; 76. a support plate; 77. a vertical plate; 78. a support bar; 8. a lifting device; 81. a pushing device; 82. and (4) a collecting device.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment of the application discloses a large-span through-type continuous steel truss pushing process. The large-span through-type continuous steel truss pushing process comprises the following steps:

and measuring and pouring a plurality of formal piers 1 from the initial end to the stopping end of the bridge, wherein the formal piers 1 are vertically arranged on both banks of the river channel and the river channel.

The method comprises the steps of selecting a steel truss girder assembling field, backfilling the assembling field with coal gangue, filling a construction sidewalk with brick slag, hardening 18cmC20 concrete for a crane placing field and material transportation channel and a rod piece storing field, and is used for improving ground strength and reducing the situation of serious deformation of the field ground. The site is sealed by adopting color steel tiles and steel pipe columns along a river embankment and a sidewalk to prevent the situation of potential safety hazards caused by entering of idle people and the like.

A plurality of assembling supports are built on the river bank of the starting end of the bridge, the assembling supports adopt three-dimensional lattice column supports, the three-dimensional lattice column supports are mainly formed by connecting 4 phi 630 multiplied by 8mm steel pipes through angle steel and 14 channel steel, the tops of the three-dimensional lattice column supports adopt H400 multiplied by 300 steel pipes for welding, the tops of the three-dimensional lattice column supports are further provided with pad beams, and each three-dimensional lattice column support is provided with a first vertical jack, and the first vertical jacks are used for adjusting the height of the steel truss beams.

Evenly set up a plurality of supports that slide from steel truss initiating terminal to ending the end, the river course all is provided with the support that slides with the river course both sides, and the support that slides is formed by connecting a plurality of three-dimensional lattice columns, and the support top welding that slides forms the slide by two 4 pieces together H588X 300X 12X 20 shaped steel.

Pre-splicing the steel trusses in a steel truss storage site, and pre-splicing main truss chord members; pre-splicing the upper chord member and the lower chord member; the main truss is pre-spliced in an upper and lower horizontal longitudinal connection manner; polishing and jacking the joint for pre-splicing. The assembled unit bodies are assembled section by section through assembling supports hoisted by a 150t truck crane, and deviation values of the central line, the level, the camber and the like of the steel beam are measured at any time in the assembling process. And timely adjusting when the height of the plane steel beam is different or the center line of the steel beam is inclined.

The skid shoe is arranged on the slide way, the skid shoe is positioned below the lower chord of the steel beam and on the upper surface of the slide way, the total length of the skid shoe is 2 meters, the tetrafluoro plate is arranged at the bottom of the skid shoe, steel plates are welded around the tetrafluoro plate to prevent the skid shoe from being displaced with the skid shoe in the dragging process, the skid shoe is made of 3I 630I-shaped steel, and meanwhile, limit baffles are arranged on two sides of the slide way.

The guide beam is built at the front end of the assembled section of steel truss girder, the guide beam is an auxiliary structure for dragging the steel girder and is used for guiding the upper pier at the front end of the steel girder, a dragging point is convenient to set, the total length of the guide beam is 28.5m, the truss height of the guide beam is 4.0m, the distance between truss nodes is 4.5m, the upper chord member, the lower chord member and the main diagonal brace are made of I32b steel, and the diagonal web members are made of 25a channel steel which is spliced back to back.

The method is characterized in that a traction facility is arranged, 2 200t horizontal jacks are adopted in the traction facility, 2 200t horizontal jacks are arranged on the pier top of a formal pier 1 in front of the traction direction, and the connection seat of the traction counterforce device is pre-buried in the pier body construction process. And arranging a rear anchor point at the tail end of the section of the assembled steel truss girder, and connecting the 200t horizontal jack with the rear anchor point through a steel strand.

The steel truss girder is dragged to start to drag the steel girder to slide after preparation work such as slideway arrangement, sliding shoe arrangement and the like is completed. 2 200t horizontal jacks continuously drag the steel truss beam to move forward, and one section is dragged each time according to the length of the slideway. And after finishing dragging one section of the steel truss girder, continuously assembling the steel truss girder at the tail end of the steel truss girder, continuously dragging one section of the steel truss girder forwards through a 200t horizontal jack, and repeating the operation until the steel truss girder reaches a formal pier 1 on the opposite bank of the river.

The top beam facility is arranged and comprises a second vertical jack 11, and a safety hoop is attached to the top of the second vertical jack 11 to prevent sudden falling accidents caused by the failure of a certain component during top application. Meanwhile, a lift limit hole or other marks are arranged to prevent cylinder pulling caused by excessive ejection of the piston. The distribution beam is arranged at the top and the bottom of the hydraulic jack and distributes concentrated load to a large range, and the distribution beam is generally formed by cutting an old rail into a length of 800-1200 mm, assembling and welding the old rail into a buckling rail bundle and planing and flattening the buckling rail bundle. A pillow 14 and a backing plate 12 are arranged, the pillow 14 is arranged on the formal pier 1 in a stacking mode, and the backing plate 12 is arranged on the top of the hydraulic jack.

And (3) mounting a formal support 13 on the formal pier 1, correcting the elevation of the top surface of the supporting cushion stone according to the measured data, and simultaneously remeasuring the position of the anchor bolt hole reserved on the top of the pier, and performing chiseling and finishing. The steel beam support adopts a spherical steel support, the height of the formal support 13 at the pier top is adjusted by adopting a steel wedge, and the anchor bolt hole and the support bottom are grouted by adopting a dry-ramming mortar filling method after the beam falls, so that the support bottom slurry is ensured to be compact, and meanwhile, the dustproof sealing work of the support is well done.

When the beam is dropped, jacked and dropped, a specially-assigned person on the jack makes a safety hoop, and the formal support 13 is used as two safety support stacks. The second vertical jack 11 lifts the steel truss, a layer of sleeper pile 14 is drawn out, the jacks are disassembled, the steel beam falls on the sleeper pile 14 again, a layer of base plate 12 is drawn out from the second vertical jack 11, and the second vertical jack 11 is switched to circulate the process until the beam body of the steel truss is lapped on the formal support 13.

As shown in fig. 1, 2 and 3, a plurality of pillow stacks 14 are stacked on the main pier 1, the pillow stacks 14 are rectangular, two end faces of the pillow stacks 14 along the length direction thereof are fixedly connected with two ear plates 25, and rectangular limiting grooves 26 are formed in the four ear plates 25 along the thickness direction of the pillow stacks 14. The lower surface of each pillow stack 14 is fixedly connected with four cylindrical positioning blocks 15, one end of each positioning block 15 far away from the pillow stack 14 is provided with a chamfer, the axes of the four positioning blocks 15 are perpendicular to the pillow stack 14, and the four positioning blocks 15 are arranged on the lower surface of the corresponding pillow stack 14 in a matrix manner. The upper surface of the pillow stack 14 is provided with positioning grooves 16 corresponding to the positions of the positioning blocks 15; a plurality of pillow stacks 14 are arranged in a mutual overlapping mode, positioning blocks 15 are inserted into positioning grooves 16 of the pillow stacks 14 below by the pillow stacks 14 above, the positioning of the pillow stacks 14 is achieved, and the situation that the pillow stacks 14 are inclined under the compression effect of the steel trussed beams is reduced; the positioning block 15 is provided with the chamfer, so that the guiding effect is achieved, and the positioning block 15 can be conveniently inserted into the corresponding positioning groove 16.

As shown in fig. 3 and 4, a support seat 17 is provided between the pillow stack 14 and the main pier 1, and now the pillow stack 14 on the support seat 17 is sequentially marked as a first pillow stack 14, a second pillow stack 14, a third pillow stack 14, and so on from bottom to top. The two sides of the supporting seat 17 along the length direction of the pillow stack 14 are vertically and fixedly connected with lifting cylinders 2, and the lifting cylinders 2 are provided with lifting devices 8 for lifting the second pillow stack 14 and the pillow stack 14 above the second pillow stack 14. The lifting device 8 comprises a lifting plate 21 horizontally and fixedly connected to a piston rod of the lifting cylinder 2, two hinged plates 22 are vertically and fixedly connected to the lifting plate 21, a turnover plate 23 is arranged between the two hinged plates 22, and one end, far away from the pillow stack 14, of the turnover plate 23 is hinged to the two hinged plates 22. A transverse plate 27 is horizontally arranged above the turnover plate 23, when the turnover plate 23 is abutted against the lower surface of the transverse plate 27, the turnover plate 23 is in a horizontal state, and the transverse plate 27 is fixedly connected to the two hinge plates 22. A turnover cylinder 24 is arranged below the turnover plate 23, the cylinder body of the turnover cylinder 24 is hinged to the upper surface of the lifting plate 21, and the piston rod of the turnover cylinder 24 is connected with the turnover plate 23 through a limiting component 3.

As shown in fig. 4 and 5, the limiting component 3 comprises an articulated seat fixedly connected to the lower surface of the turning plate 23, a rotating shaft is rotatably connected to the articulated seat, one end of the rotating shaft is fixedly connected with a connecting rod 35, the rotating shaft is located at one end of the connecting rod 35, and the other end of the connecting rod 35 is hinged to a piston rod of the turning cylinder 24. The other end of the rotating shaft is fixedly connected with a gear 34, the lower surface of the turnover plate 23 is connected with a rack 33 in a sliding way along the length direction of the pillow stack 14, and the gear 34 is meshed with the rack 33. The side of the gear 34 facing the moving plate 31 is provided with a first limiting seat 4, the side of the gear 34 far away from the moving plate 31 is provided with a second limiting seat 41, and the first limiting seat 4 and the second limiting seat 41 are arranged to limit the turning angle of the connecting rod 35, so as to limit the rotation angle of the gear 34. A long-strip-shaped moving plate 31 is fixedly connected to one side, close to the pillow stack 14, of the rack 33, two guide rods 29 are horizontally and fixedly connected to one side, facing the turnover plate 23, of the moving plate 31, the two guide rods 29 penetrate through the turnover plate 23, and a limit nut 28 is connected to one end, penetrating out of the turnover plate 23, of each guide rod 29 through threads. The upper surface of the moving plate 31 is fixedly connected with a lug 32 which is inserted into the limiting groove 26 of the corresponding ear plate 25.

As shown in fig. 6 and 7, a locking assembly 42 is further disposed between the turning plate 23 and the moving plate 31, the locking assembly 42 includes a control rod 5, the control rod 5 is fixedly connected to one end of the moving plate 31 close to the turning plate 23, the length direction of the control rod 5 is parallel to the axial direction of the guide rod 29, an installation groove 51 is formed in the turning plate 23 corresponding to the position of the control rod 5, and the control rod 5 is slidably disposed in the installation groove 51. The side of the control lever 5 facing one of the hinge plates 22 is fixedly connected with a top block 52, the side of the top block 52 far away from the moving plate 31 is an inclined surface 53, and the side of the inclined surface 53 far away from the moving plate 31 inclines towards the control lever 5. The turning plate 23 is provided with a locking groove 54 communicated with the mounting groove 51 at a position close to the top block 52, the cross section of the locking groove 54 is circular, the locking groove 54 is positioned at one side of the mounting groove 51 close to the top block 52, and one end of the locking groove 54 far away from the mounting groove 51 is opened outwards. A locking rod 55 is connected in the locking groove 54 in a sliding manner, and the locking rod 55 abuts against the top block 52; a clamping groove 59 is formed in the hinge plate 22 close to the locking rod 55 and corresponds to the locking rod 55, and one end, far away from the top block 52, of the locking rod 55 is inserted into the clamping groove 59. Columniform holding tank 56 has been seted up to the one end that mounting groove 51 was kept away from to locking groove 54, holding tank 56 and locking groove 54 coaxial line, and the internal diameter of holding tank 56 is greater than the internal diameter of locking groove 54, the internal slipping of holding tank 56 is provided with spacing ring 57, and spacing ring 57 and check lock lever 55 fixed connection, spacing ring 57 is provided with locking spring 58 towards one side of holding tank 56 tank bottom, and locking spring 58 one end fixed connection is on spacing ring 57, locking spring 58's other end fixed connection is on the groove diapire of holding tank 56, locking spring 58 is in by tensile state all the time.

In an initial state, the turnover plate 23 is in an inclined state, the moving plate 31 abuts against the hinge plate 22, the connecting rod 35 abuts against the second limiting seat 41 at the moment, the moving plate 31 is located at a position far away from the turnover plate 23, one end of the locking rod 55 penetrates into the mounting groove 51 and abuts against the control rod 5, and the end face, far away from the control rod 5, of the locking rod 55 is flush with the hinge plate 22 with the clamping groove 59. When the second pillow stack 14 and the above pillow stacks 14 need to be lifted, the operator needs to start the lifting cylinder 2 to lift until the lower surface of the transverse plate 27 is flush with the lower surface of the ear plate 25 of the second pillow stack 14. The operator activates the flipping cylinder 24 to flip the flipping panel 23 toward the cross panel 27. Before the turnover plate 23 is turned over to the horizontal state, the locking rod 55 is located in the locking groove 54 all the time under the blocking action of the corresponding hinge plate 22, so that the moving plate 31 cannot move towards the locking rod 55, the moving plate 31 is limited to move towards the turnover plate 23, the rack 33 is limited to move towards the direction away from the moving plate 31, and under the meshing action of the gear 34 and the rack 33, the connecting rod 35 cannot turn towards the first limiting seat 4, so that the connecting rod 35 abuts against the second limiting seat 41 all the time.

When the turnover plate 23 moves to abut against the transverse plate 27, the turnover plate 23 is in a horizontal state, the convex block 32 on the moving plate 31 is inserted into the limiting groove 26 of the corresponding ear plate 25, and the clamping groove 59 on the hinge plate 22 is aligned with the locking rod 55 at the moment, so that the limiting effect of the hinge plate 22 on the locking rod 55 is relieved; under the continuous pushing action of the turnover cylinder 24 on the connecting rod 35, the connecting rod 35 turns towards the first limiting seat 4 and drives the gear 34 to rotate, so as to drive the rack 33 to move towards the direction away from the moving plate 31, further drive the moving plate 31 to move towards the turnover plate 23, and drive the control rod 5 to slide in the mounting groove 51 when the turnover plate 23 moves, so that the top block 52 is gradually inserted into one end of the locking rod 55 facing the control rod 5, and the locking rod 55 gradually extends out of the turnover plate 23 and is inserted into the clamping groove 59 under the action of the inclined surface 53; when the moving plate 31 moves to the position where the protrusion 32 abuts against one end of the corresponding limiting groove 26 far away from the pillow stack 14, the turnover cylinder 24 stops working, and the operator starts the lifting cylinder 2 to drive the second pillow stack 14 and the pillow stacks 14 above to be lifted upwards until the second pillow stack 14 is completely separated from the first pillow stack 14, so that the operator can conveniently pull the first pillow stack 14 away.

When the operator needs to lower the second pillow stack 14 and the pillow stacks 14 above the second pillow stack 14 after the first pillow stack 14 is pulled away, the operator starts the lifting cylinder 2 to contract the piston rods of the lifting cylinder. Until the lower surface of the second pillow 14 abuts against the support seat 17. Then the operator starts the turnover cylinder 24 to drive the piston rod to contract, and the locking rod 55 is inserted into the slot 59 of the hinge plate 22, so that the turnover plate 23 cannot rotate firstly when the piston rod of the turnover cylinder 24 contracts. Before the overturning plate 23 overturns, the piston rod of the overturning cylinder 24 contracts to drive the connecting rod 35 to overturn towards the second limiting seat 41, the connecting rod 35 overturns to drive the gear 34 to rotate, so as to drive the rack 33 and the moving plate 31 to move towards the direction far away from the overturning plate 23, and the limiting effect of the lug plate 25 by the lug 32 is removed; meanwhile, the moving plate 31 moves towards the direction away from the turnover plate 23, the locking rod 55 is driven to move towards the moving plate 31, so that the locking rod 55 is gradually separated from the abutting relation with the top block 52, when the moving plate 31 moves to the state that the top block 52 is completely separated from the locking rod 55, the connecting rod 35 abuts against the second limiting seat 41, the locking rod 55 is completely separated from the clamping groove 59 under the action of the elastic force of the locking spring 58, and the limiting effect of the locking rod 55 on the hinge plate 22 is relieved; when the piston rod of the turnover cylinder 24 contracts, the turnover plate 23 turns downwards along with the piston rod of the turnover cylinder 24, until the moving plate 31 abuts against the hinge plate 22, so that the lug plate 25 does not block the moving plate 31 when the lifting cylinder 2 drives the moving plate 31 to lift.

As shown in fig. 8, the supporting seat 17 is provided with a pushing device 81 for pushing the separated first pillow stack 14 out of the supporting seat 17, the pushing device 81 includes the supporting plate 6, the upper surface of the supporting seat 17 is provided with a sinking groove 64, and two ends of the sinking groove 64 along the width direction of the first pillow stack 14 are open. The layer board 6 sets up in heavy groove 64, and layer board 6 butt is at the lower surface of first pillow buttress 14, the vertical fixedly connected with push pedal 61 in layer board 6 one side, and push pedal 61 butt is at one side of first pillow buttress 14 along self width direction, and the height of push pedal 61 is less than the height of first pillow buttress 14, and one side fixedly connected with mount pad 63 of push pedal 61 is kept away from to push pedal 61, and mount pad 63 slides along the width direction of first pillow buttress 14 and sets up in heavy groove 64. One side surface of the supporting seat 17 along the width direction of the first pillow stack 14 is fixedly connected with a pushing cylinder 62, and a piston rod of the pushing cylinder 62 is fixedly connected to the mounting seat 63.

As shown in fig. 9 and 10, two receding grooves 65 are formed on the upper surface of the supporting seat 17 corresponding to the positioning blocks 15 of the first pillow stack 14, and the two positioning blocks 15 located on the same side of the first pillow stack 14 in the length direction are inserted into the same receding groove 65. The two ends of the abdicating groove 65 along the width direction of the first pillow stack 14 are opened, the supporting seat 17 is further provided with two sliding grooves 66, the sliding grooves 66 are in one-to-one correspondence with the abdicating grooves 65, and the sliding grooves 66 are communicated with the corresponding abdicating grooves 65. All be connected with latch segment 67 along the length direction of first pillow buttress 14 in the spout 66 in a sliding manner, and latch segment 67 is located between two corresponding locating pieces 15, and latch segment 67 and two locating pieces 15 butt for the restriction first pillow buttress 14 moves on supporting seat 17. All rotate in two spout 66 and be connected with screw rod 68, the length direction of screw rod 68 is parallel with the length direction of first pillow buttress 14, and screw rod 68 and the latch segment 67 threaded connection who corresponds in the spout 66, two screw rod 68 coaxial lines, be provided with double-shaft motor 69 between two screw rods 68, double-shaft motor 69's output shaft and screw rod 68 one-to-one, and double-shaft motor 69's output shaft and the coaxial fixed connection of screw rod 68 that corresponds, offer the chamber 691 that holds that is used for holding double-shaft motor 69 on the supporting seat 17, double-shaft motor 69 fixed connection holds in the chamber 691.

As shown in fig. 2 and 3, one side of the supporting seat 17 away from the pushing cylinder 62 is fixedly connected with an L-shaped supporting rod 78, the upper surface of the horizontal rod of the two supporting rods 78 is horizontally and fixedly connected with a rectangular side plate 7, the length direction of the side plate 7 is parallel to the length direction of the first pillow stack 14, two sides of the side plate 7 along the length direction are vertically and fixedly connected with two guide plates 71, the four guide plates 71 are respectively in one-to-one correspondence with the four ear plates 25 of the pillow stack 14, and the heights of the four guide plates 71 are not higher than the lower surfaces of the ear plates 25 of the first pillow stack 14. A vertical plate 77 is vertically and fixedly connected to one side of the side plate 7 away from the supporting seat 17, and the height of the vertical plate 77 is higher than the height of the upper surface of the first pillow stack 14. The below level of curb plate 7 is provided with rectangular base plate 73, and the length direction of base plate 73 is parallel with the length direction of curb plate 7, the vertical fixedly connected with locking cylinder 74 in base plate 73 below, and the piston rod of locking cylinder 74 runs through base plate 73 and extends towards curb plate 7 direction, and the one end fixed connection that the piston rod of locking cylinder 74 wore out base plate 73 is at the bottom plate of curb plate 7. Base plate 73 all extends curb plate 7 along self length direction's both ends, and curb plate 7 is along the equal vertical pole setting 75 that is provided with in self length direction's both sides, and the equal fixed connection of two pole settings 75 is on base plate 73 upper surface, and the equal fixedly connected with extension board 76 in upper end of two pole settings 75, and the extension board 76 level sets up, and two locating plates 72 of fixedly connected with on the extension board 76, locating plate 72 and deflector 71 one-to-one, locating plate 72 and the deflector 71 top butt that corresponds.

Before the first pillow stack 14 is disassembled, the operator activates the locking cylinder 74 to lift the base plate 73, so as to move each positioning plate 72 upward, so that a sufficient gap is left between the positioning plate 72 and the corresponding guide plate 71. The operator lifts the second pillow stack 14 and the pillow stacks 14 together through the lifting cylinder 2 until the second pillow stack 14 is completely separated from the first pillow stack 14, the operator starts the double-shaft motor 69 to drive the two locking blocks 67 to move out of the corresponding abdicating grooves 65, and the limiting effect of the locking blocks 67 on the first pillow stack 14 is relieved; then, the operator starts the pushing cylinder 62 to drive the mounting seat 63, the pushing plate 61 and the supporting plate 6 to move towards the vertical plate 77, so that the first pillow stack 14 moves towards the vertical plate 77, when the first pillow stack 14 moves to abut against the vertical plate 77, the limiting grooves 26 of the ear plates 25 on the first pillow stack 14 are aligned with the corresponding guide plates 71, and then the operator starts the locking cylinder 74 to lower the base plate 73, and drives the positioning plates 72 to move downwards and insert into the corresponding limiting grooves 26 until the positioning plates 72 abut against the corresponding guide plates 71; finally, the operator starts the pushing cylinder 62 to drive the mounting seat 63, the pushing plate 61 and the supporting plate 6 to be reset in the direction away from the vertical plate 77, so that the supporting plate 6 is pulled away from the first pillow stack 14, the supporting effect of the supporting plate 6 on the first pillow stack 14 is relieved, and the first pillow stack 14 descends along the guide plate 71 under the action of gravity until the first pillow stack is lapped on the side plate 7. After the first pillow stack 14 is detached, the operator drives the second pillow stack 14 to be lapped on the supporting seat 17 through the lifting cylinder 2, and then the operator starts the double-shaft motor 69, so that the locking block 67 is inserted into the corresponding abdicating groove 65 again and abuts against the positioning block 15 of the second pillow stack 14, and the limiting effect on the second pillow stack 14 is achieved.

The implementation principle of the embodiment of the application is as follows: before an operator falls a beam, a second vertical jack 11, a formal support 13 and a plurality of stacked sleeper piles 14 are arranged on each formal pier 1, the sleeper piles 14 are stacked on a support seat 17, the support seat 17 is fixedly connected to the formal pier 1, and a plurality of stacked base plates 12 are arranged at the top end of the second vertical jack 11. When a beam falls, an operator controls the second vertical jack 11 to jack the steel truss beam, so that the steel truss beam is separated from the pillow stacks 14, the operator controls the lifting cylinder 2 and the jacking device on the supporting seat 17 to separate the pillow stacks 14 close to the supporting seat 17 from other pillow stacks 14, the pillow stacks 14 close to the supporting seat 17 are pushed away from the supporting seat 17 through the jacking device 81, the pushed pillow stacks 14 are detached from the supporting seat 17 through the collecting device 82, and the other pillow stacks 14 are driven to descend through the lifting cylinder 2 and are lapped on the supporting seat 17, so that one layer of pillow stacks 14 is pulled out; then, an operator starts a second vertical jack 11 to drive the steel truss girder to fall onto the sleeper pile 14, so that the base plate 12 is separated from the steel truss girder, and the operator draws out a layer of base plate 12; the operator starts the second vertical jack 11 again to jack the steel truss, so that the sleeper 14 is separated from the steel truss again, and a layer of sleeper 14 is drawn out; and repeating the steps until the steel truss girder is finally lapped on the formal support 13 to finish the girder falling of the steel truss girder.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A large-span through-type continuous steel truss pushing process is characterized by comprising the following steps: the method comprises the following steps:

installing a guide beam: assembling a guide beam at the front end of the steel truss girder;

and (3) beam falling: and (3) the steel truss girder is lowered onto the formal pier (1) through the cooperation of the girder falling equipment and the sleeper pile (14).

2. The large-span through-type continuous steel truss jacking process according to claim 1, wherein the process comprises the following steps: the beam falling equipment comprises a second vertical jack (11) arranged on the formal pier (1), the formal pier (1) is also provided with formal supports (13), the pillow stacks (14) are arranged on the formal pier (1), a plurality of pillow stacks (14) are stacked on the formal pier (1), a plurality of backing plates (12) are arranged on the second vertical jack (11), the steel truss girder is lapped on the pillow pile (14), the second vertical jack (11) jacks the steel truss girder to separate the steel truss girder from the sleeper pile (14) and takes off a layer of sleeper pile (14), then the second vertical jack (11) descends to enable the steel truss girder to be overlapped on the sleeper pile (14) again, and the backing plate (12) on the second vertical jack (11) is separated from the steel truss girder, and removing a layer of tie plate (12) and repeating the steps to enable the steel truss to be supported on the formal support (13).

3. The long-span through-type continuous steel truss jacking process of claim 2, wherein the process comprises the following steps: pillow buttress (14) one side fixedly connected with locating piece (15), constant head tank (16) that supply other locating pieces (15) to peg graft are seted up to pillow buttress (14) opposite side, and are a plurality of pillow buttress (14) superposes on formal mound (1) one by one.

4. The long-span through-type continuous steel truss jacking process of claim 2, wherein the process comprises the following steps: be provided with supporting seat (17) between pillow buttress (14) and formal mound (1), supporting seat (17) both sides all are provided with lift cylinder (2), be provided with lifting device (8) that are used for pillow buttress (14) and other pillow buttress (14) separation with one of them on lift cylinder (2), still be provided with on supporting seat (17) and be used for ejecting thrustor (81) of supporting seat (17) with the pillow buttress (14) after the separation, supporting seat (17) one side fixedly connected with curb plate (7), be provided with on curb plate (7) and be used for piling up collection device (82) of putting pillow buttress (14).

5. The long-span through-type continuous steel truss pushing process according to claim 4, wherein the pushing process comprises the following steps: lifting device (8) include lifter plate (21), articulated slab (22), returning face plate (23) and upset cylinder (24), lifter plate (21) fixed connection is on the piston rod of lifter cylinder (2), articulated slab (22) fixed connection is on lifter plate (21), returning face plate (23) are articulated with articulated slab (22), the cylinder body of upset cylinder (24) articulates on lifter plate (21), the piston rod of upset cylinder (24) articulates on returning face plate (23), fixedly connected with otic placode (25) on pillow buttress (14), returning face plate (23) butt is in the below of otic placode (25), be provided with on articulated slab (22) be used for with carry out spacing diaphragm (27) to returning face plate (23) rotation angle.

6. The large-span through-type continuous steel truss jacking process of claim 5, wherein the process comprises the following steps: the turnover plate (23) is provided with a limiting component (3) for positioning the ear plate (25), the limiting assembly (3) comprises a moving plate (31), a bump (32), a rack (33), a gear (34) and a connecting rod (35), the moving plate (31) is arranged on the turnover plate (23) in a sliding manner, the rack (33) is fixedly connected with the moving plate (31), the rack (33) is connected on the turnover plate (23) in a sliding way, the gear (34) is connected on the turnover plate (23) in a rotating way, the gear (34) is meshed with the rack (33), the connecting rod (35) is fixedly connected with the gear (34), the connecting rod (35) is hinged with a piston rod of the turnover cylinder (24), the lug (32) is fixedly connected on the moving plate (31), the ear plate (25) is provided with a limiting groove (26), and the lug (32) is inserted in the limiting groove (26).

7. The long-span through-type continuous steel truss jacking process of claim 6, wherein the process comprises the following steps: the turnover mechanism is characterized in that a first limiting seat (4) and a second limiting seat (41) which are used for limiting the turnover angle of the gear (34) are arranged on the turnover plate (23), the first limiting seat (4) and the second limiting seat (41) are positioned on two sides of the gear (34), a control rod (5) is fixedly connected to the movable plate (31), a mounting groove (51) is formed in the turnover plate (23), the control rod (5) is slidably arranged in the mounting groove (51), a top block (52) is fixedly connected to the control rod (5), a locking groove (54) communicated with the mounting groove (51) is formed in the turnover plate (23), a locking rod (55) is slidably arranged in the locking groove (54), one end of the locking rod (55) is abutted against the top block (52), an accommodating groove (56) communicated with the locking groove (54) is formed in the turnover plate (23), and a limiting ring (57) is slidably arranged in the accommodating groove (56), spacing ring (57) fixed connection is on check lock lever (55), just be provided with locking spring (58) between the tank bottom wall of spacing ring (57) and holding tank (56), locking spring (58) one end fixed connection is on spacing ring (57), locking spring (58) other end fixed connection is on the tank bottom wall of holding tank (56).

8. The large-span through-type continuous steel truss jacking process of claim 4, wherein the process comprises the following steps: thrustor (81) include layer board (6), push pedal (61) and top push cylinder (62), heavy groove (64) have been seted up on supporting seat (17), heavy inslot (64) internal slipping is connected with mount pad (63), push pedal (61) fixed connection is on mount pad (63), layer board (6) fixed connection is on push pedal (61), is close to pillow buttress (14) butt of supporting seat (17) is on layer board (6), and is close to pillow buttress (14) and push pedal (61) butt of supporting seat (17), recess (65) that give the place to that are used for conveniently holding locating piece (15) are all offered in the both sides of heavy groove (64) in supporting seat (17).

9. The long-span through-type continuous steel truss jacking process of claim 8, wherein the process comprises the following steps: the position that supporting seat (17) correspond two groove (65) of stepping down all offer with the spout (66) that groove (65) communicate of stepping down, two spout (66) internal slipping is connected with latch segment (67), supporting seat (17) are used for spacing pillow buttress (14) that are close to supporting seat (17), be provided with biax motor (69) on supporting seat (17), equal fixedly connected with screw rod (68) on two output shafts of biax motor (69), screw rod (68) and latch segment (67) one-to-one, screw rod (68) and latch segment (67) threaded connection who corresponds.

10. The large-span through-type continuous steel truss jacking process of claim 4, wherein the process comprises the following steps: collecting device (82) include deflector (71) and locating plate (72), curb plate (7) fixed connection is in one side of supporting seat (17), the vertical fixed connection of deflector (71) is on curb plate (7), otic placode (25) one-to-one on deflector (71) and pillow buttress (14), and deflector (71) peg graft in spacing groove (26) of corresponding otic placode (25), locating plate (72) and deflector (71) one-to-one, curb plate (7) below is provided with base plate (73), deflector (71) are through pole setting (75) fixed connection on base plate (73), fixedly connected with locking cylinder (74) on base plate (73), the piston rod fixed connection of locking cylinder (74) is on curb plate (7).