CN115450120B - Large-span walking type steel box girder pushing construction equipment - Google Patents
Large-span walking type steel box girder pushing construction equipment Download PDFInfo
- Publication number
- CN115450120B CN115450120B CN202211066544.9A CN202211066544A CN115450120B CN 115450120 B CN115450120 B CN 115450120B CN 202211066544 A CN202211066544 A CN 202211066544A CN 115450120 B CN115450120 B CN 115450120B
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- Prior art keywords
- limiting
- seat
- fixedly connected
- plate
- groove
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
The application relates to a large-span walking type steel box girder pushing construction device, and relates to the field of bridge construction. The lifting device comprises a lifting seat, a jack and a limiting seat, wherein a plurality of limiting seats are arranged on a support, the lifting seat is arranged on the support in a vertical sliding mode, the limiting seats are used for supporting the lifting seat, the jack is arranged on the lifting seat, a fixing device for fixing the jack is arranged on the lifting seat, a driving device for driving the lifting seat to lift is arranged on the support, and a control device for controlling the limiting seat to move is arranged on the support. The application has the function of solving the problem that an operator is inconvenient to install and remove the jack at high altitude.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a large-span walking type steel box girder pushing construction device.
Background
In the construction of a large-span bridge, in order to shorten the construction period and avoid meeting traffic conditions such as hydrologic environment, shipping conditions and the like, bridge pushing equipment is generally adopted for construction, and the existing equipment for bridge pushing mainly has two types. One is a mode of adopting steel strand dispersion traction, and the other is a mode of adopting a hydraulic cylinder to carry out jacking and flat pushing.
The method for pushing the bridge through the hydraulic cylinder comprises the steps of firstly erecting temporary supports on the periphery of a construction site, then splicing the bridge to be constructed by utilizing the erected temporary supports, then dragging the spliced bridge in place by utilizing a dragging device, and finally falling the bridge through a vertical jack so that the bridge is lapped on a formal support on a formal pier.
Aiming at the related technology, the inventor finds that the volume and the weight of the vertical jack for jacking the bridge are large, an operator needs to carry the vertical jack to the bracket and install the vertical jack, and the vertical jack needs to be disassembled after the girder falling of the bridge is completed, so that the high-altitude operation can bring a plurality of inconveniences to the installation and the disassembly of the vertical jack due to the fact that the height of the bracket is high.
Disclosure of Invention
The application provides large-span walking type steel box girder pushing construction equipment, which aims to solve the problem that an operator cannot conveniently install and remove jacks at high altitude.
The application provides a large-span walking type steel box girder pushing construction device which adopts the following technical scheme:
the utility model provides a large-span walking type steel case roof beam pushes away construction equipment, includes elevating seat, jack and spacing seat, spacing seat is provided with a plurality of on the support, the vertical setting of sliding of elevating seat is on the support, just spacing seat is used for supporting the elevating seat, the jack sets up on the elevating seat, be provided with the fixing device who is used for fixed jack on the elevating seat, be provided with the drive arrangement who is used for driving the elevating seat and goes up and down on the support, be provided with the controlling means who opens or close with controlling spacing seat on the support.
By adopting the technical scheme, when an operator needs to fall a bridge, the operator firstly places the jack on the lifting seat and fixedly connects the jack on the lifting seat through the fixing device, then the operator drives the lifting seat to be lifted to a position of the bracket, which is close to the top, through the driving device, the initial state of the limiting seat is in an open state, and the operator drives the limiting seats to be mutually close to form a supporting platform for supporting the lifting seat through the control assembly, so that the jack can conveniently lift the bridge; after the beam falling is completed, an operator controls each limit seat to open through the control device, the supporting effect of the limit seat on the limit seat is relieved, then the jack is controlled to fall through the driving device, and finally the operator removes the jack by relieving the limit effect of the fixing device on the jack. Due to the fact that the jack is relatively large in mass, inconvenience of an operator in installing and removing the jack at high altitude can be reduced.
Optionally, controlling means includes turnover rod and connecting rod, turnover rod and spacing seat one-to-one, turnover rod one end fixed connection is on spacing seat, the other end of turnover rod articulates on the support, connecting rod and turnover rod one-to-one, just the connecting rod articulates on the turnover rod, all articulate on the connecting rod has the slide, the slide slides along vertical direction and sets up on the support, be provided with the control assembly who is used for controlling the slide position on the support.
Through adopting above-mentioned technical scheme, the operator is through promoting each slide upward movement to drive the connecting rod upward movement, the connecting rod upward movement then promotes the upset of upset pole upward. When each sliding seat moves downwards, each connecting rod also moves downwards along with the corresponding sliding seat, so that each overturning rod is driven to overturn downwards, and each limiting seat is mutually close to form a supporting platform for supporting the lifting seat. The control assembly controls the position of the rod sliding seat so as to control the opening or closing of each limit seat.
Optionally, the control assembly includes removal axle and limiting plate, remove the axle setting on the slide, limiting plate fixed connection is on the support, be provided with the removal groove on the extension board, remove axle one end and be located the removal inslot, be provided with the first stopper that is used for carrying out spacing to removal axle on the limiting plate, first stopper rotates to be connected on the limiting plate, first stopper below fixedly connected with baffle, just first stopper butt is on the baffle, equal fixedly connected with branch on first stopper and the limiting plate, two connect through the extension spring between the branch.
By adopting the technical scheme, an operator drives each sliding seat to move upwards by pushing each sliding seat so as to drive each movable shaft to move upwards along the movable groove, and when the movable shaft is abutted against the first limiting block, the movable shaft continues to move upwards so as to drive the corresponding first limiting block to turn upwards, and the process needs to overcome the elastic force of the tension spring; when the movable shaft passes over the first limiting block, the acting force on the first limiting block is relieved, and the first limiting block is reset under the action of the elastic force of the tension spring, so that the first limiting block is overlapped on the baffle again; at the moment, the operator releases the upward pushing force on each sliding seat, so that each sliding seat moves downwards under the action of gravity until the moving shaft is lapped on the first limiting block, and each limiting seat is in an open state at the moment.
Optionally, fixedly connected with extension board on the slide, the spout has been seted up on the extension board, sliding connection has the slider in the spout, remove axle fixedly connected with on the slider, fixedly connected with first otic placode on the slider, the one end fixedly connected with second otic placode that the slide was kept away from to the extension board, fixedly connected with guide bar on the first otic placode, the guide bar slides and wears to establish on the second otic placode, the guide bar overlaps between first otic placode and second otic placode and is equipped with reset spring, reset spring is in compressed state.
Through adopting above-mentioned technical scheme, the guide bar plays the guide effect to reset spring, reduces the crooked condition of reset spring, exerts thrust to first otic placode through reset spring for the slider remains the trend of moving towards keeping away from the second otic placode direction all the time, thereby makes the removal axle remain the trend of moving towards keeping away from the second otic placode direction.
Optionally, the guide way has been seted up on the limiting plate, the guide way is located the upper end of removal groove, the one end that the guide way is close to the slide and removes the groove intercommunication, the guide way other end downward sloping, still seted up the guide way on the limiting plate, guide way upper end and guide way intercommunication, the guide way lower extreme is towards removing the groove slope and with remove tank bottom intercommunication, the holding tank has been seted up on the limiting plate, the sliding is provided with the second stopper in the holding tank, the upper surface of second stopper flushes with the lower cell wall of guide way, the one end that the spout was kept away from to the second stopper is provided with first ejector spring, one end fixed connection that the second stopper was kept away from to first ejector spring is on the cell wall of holding tank.
Through adopting above-mentioned technical scheme, when each limit seat is close each other to the operator needs control, the operator then needs upwards promote each slide for remove axle and second stopper butt, then the operator continues to control each slide and upwards remove, and then promote corresponding removal axle and upwards remove, make the second stopper overcome the elasticity effect of first ejector spring under the effect of removal axle and retract the holding tank, when removing the axle and crossing the second stopper, the effort to the second stopper is removed, the second stopper resets under the elasticity effect of first ejector spring, and the upper end of shifting chute has been plugged, the operator releases the upward thrust to each slide at this moment, the carriage then moves down along the guide way under the gravity effect of corresponding slide, this process reset spring is compressed gradually, when the carriage moves to the guide way, the carriage then moves down along the guide way, under the gravity effect of slide and the elasticity effect of first ejector spring, each limit seat is closed each other at this moment, be used for supporting the elevating seat.
Optionally, the lifting seat is provided with a plurality of abdicating grooves, the abdicating grooves are in one-to-one correspondence with the limiting seats, the limiting seats are positioned in the abdicating grooves, a plurality of rib plates are fixedly connected to the limiting seats, and the rib plates are positioned in the abdicating grooves and are abutted to the corresponding limiting seats.
Through adopting above-mentioned technical scheme, when each spacing seat folds each other, the spacing seat inserts the inslot of stepping down that corresponds, and spacing seat corresponds the lower cell wall of stepping down the groove this moment, and the operator control spacing seat moves down and makes spacing seat butt in the last cell wall of corresponding the groove of stepping down, gusset and the spacing seat butt that corresponds this moment play spacing effect to spacing seat, and then improves the stability of lifting seat on spacing seat.
Optionally, fixing device includes articulated seat, backup pad and fixed plate, articulated seat is provided with a plurality of on spacing seat, backup pad and articulated seat one-to-one, just the backup pad articulates on corresponding articulated seat, fixed plate fixed connection is in the backup pad, fixed plate butt is on the periphery of jack, the jack is provided with a plurality of fixed subassembly that are used for carrying out spacing to the fixed plate, just fixed subassembly and fixed plate interval setting.
Through adopting above-mentioned technical scheme, when the operator installs the jack on the elevating socket, the operator overturns each backup pad towards the jack direction for each fixed plate all butt is on the jack, then the operator passes through the reverse upset of fixed subassembly restriction each fixed plate, and then realizes the fixed position to the jack.
Optionally, the fixed subassembly includes base and spacing fixture block, two elongated slots have been seted up on the base, spacing fixture block and elongated slot one-to-one, just spacing fixture block slides and sets up in the elongated slot that corresponds, two spacing fixture block symmetry sets up in the both sides of fixed plate along the direction of height, two offer the draw-in groove on the spacing fixture block, with the fixed plate joint that spacing fixture block corresponds is at the draw-in groove of this spacing fixture block.
Through adopting above-mentioned technical scheme, the operator overturns each backup pad for the fixed plate overlap joint is on the jack, then the operator removes spacing fixture block, makes the fixed plate joint that corresponds in the draw-in groove of spacing fixture block, thereby restricts the reverse upset of fixed plate, makes each fixed plate keep supporting the state of tight jack through this mode, thereby realizes the fixed position to the jack.
Optionally, fixedly connected with horizontal pole on the base, the cover is established to the cover on the horizontal pole and is equipped with the sleeve, articulated on the sleeve have two gangbars, gangbar and spacing fixture block one-to-one, just the gangbar articulates on corresponding spacing fixture block, fixedly connected with first bulge loop on the sleeve, fixedly connected with second bulge loop on the horizontal pole, just the horizontal pole is equipped with the second ejector spring at first bulge loop with the cover between the second bulge loop, second ejector spring one end butt is on first bulge loop, the other end butt of second ejector spring is on the second bulge loop, the one end that second ejector spring was kept away from to the sleeve is provided with the nut, nut threaded connection is on the horizontal pole, and nut and sleeve butt.
Through adopting above-mentioned technical scheme, when the operator need go on prescribing a limit to the position of each fixed plate, the operator need unscrew the nut for the sleeve is kept away from the base direction under the effect of second ejector spring and is removed, thereby makes two spacing fixture blocks on the same base be close to each other, and then makes two spacing fixture blocks restrict the fixed plate upset of both sides, thereby realizes prescribing a limit to the position of two fixed plates, and the operator realizes prescribing a limit to the position of each fixed plate through this mode, and then realizes prescribing a limit to the jack position. When the operator needs to remove the position fixation to the jack, the operator needs to screw up the nut for sleeve orientation is corresponding base direction removal, makes two spacing cassettes on the same base keep away from each other, removes spacing fixture block to the spacing effect of fixed plate, through screwing up each nut, removes the position limitation to each fixed plate, and finally the operator overturns each fixed plate towards keeping away from the jack direction, makes things convenient for the operator to tear down the jack.
Optionally, drive arrangement includes guide holder, dead lever, pulley and hoist engine, the dead lever is provided with a plurality of on the elevating platform, guide holder and dead lever one-to-one, guide holder fixed connection is on corresponding dead lever, and each the guide holder all slides along vertical direction and sets up on the support, the pulley rotates to be connected on the support, hoist engine fixed connection is near the below position at the support, around being equipped with the cable on the pulley, cable one end fixed connection is on the elevating platform, the cable other end is connected with the hoist engine.
Through adopting above-mentioned technical scheme, the operator receive and releases the cable through the hoist engine to pulling lifting seat reciprocates, this in-process guide holder plays the guide effect, reduces the condition that the lifting seat goes up and down the in-process and appears rocking.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the jack is arranged on the lifting seat by an operator through the fixing device, then the lifting seat is driven by the winch to lift and move to a height, and finally each limit seat is driven by the control device to fold mutually for supporting the lifting seat, so that the jack is conveniently arranged on the support by the operator;
2. after the beam falling is completed, an operator drives each limiting seat to be separated from each other through the control device, the supporting effect on the lifting seat is relieved, then the operator drives the lifting seat to descend through the driving device, and after the lifting seat descends to the height convenient for manual operation, the operator removes the limiting effect on the jack through the fixing device, so that the jack is convenient to detach from the support by the operator.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present application.
Fig. 2 is a schematic structural view of a base shaft according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an embodiment of the present application for embodying a limiting seat.
Fig. 4 is a schematic structural diagram of a lifting seat according to an embodiment of the present application.
Fig. 5 is a schematic diagram showing a structure of the flip lever after being flipped down according to an embodiment of the present application.
Fig. 6 is an exploded view of an embodiment of the present application showing the flip lever flipped up.
Fig. 7 is a schematic structural view of a limiting plate according to an embodiment of the present application.
Fig. 8 is an enlarged schematic view of the portion a in fig. 4.
Reference numerals illustrate: 1. a lifting seat; 111. a relief groove; 112. rib plates; 12. a jack; 13. a limit seat; 14. a fixing device; 15. a driving device; 16. a control device; 17. a base rod; 18. a bracket; 2. turning over the rod; 21. a connecting rod; 22. a slide; 3. a control assembly; 31. a movable shaft; 32. a limiting plate; 33. a moving groove; 34. a first limiting block; 35. a baffle; 36. a support rod; 37. a tension spring; 38. a rotating shaft; 4. a guide groove; 41. a guide groove; 42. a receiving groove; 43. a second limiting block; 44. a first urging spring; 45. a guide post; 5. a support plate; 51. a chute; 52. a slide block; 53. a first ear plate; 54. a second ear plate; 55. a guide rod; 56. a return spring; 6. a hinge base; 61. a support plate; 62. a fixing plate; 63. a fixing assembly; 64. a limiting ring; 65. a base; 66. a limit clamping block; 67. a long groove; 68. a clamping groove; 7. a cross bar; 71. a sleeve; 72. a linkage rod; 73. a first collar; 74. a second convex ring; 75. a second urging spring; 76. a nut; 8. a hoist; 81. a guide seat; 82. a pulley; 83. a fixed rod; 84. a guy cable; 85. a slide rail.
Detailed Description
The application is described in further detail below with reference to fig. 1-8.
The embodiment of the application discloses a large-span walking type steel box girder pushing construction device. As shown in fig. 1, fig. 2 and fig. 3, the span walking type steel box girder pushing construction equipment comprises limit seats 13, the limit seats 13 are arranged on four supports 18, each support 18 comprises eight vertically arranged main rods, the eight main rods are arranged in a 2×4 matrix, two adjacent main rods are fixedly connected through a plurality of auxiliary rods, the four main rods positioned in the middle are marked as base rods 17, and the limit seats 13 are in one-to-one correspondence with the base rods 17. A control device 16 is arranged between each base rod 17 and each limiting seat 13, and an operator controls the four limiting seats 13 to be close to or far away from each other through the control device 16.
As shown in fig. 3 and 4, a cylindrical elevating seat 1 is provided between the respective base bars 17, and the elevating seat 1 is moved in the vertical direction by a driving device 15. The lifting seat 1 is provided with a yielding groove 111 corresponding to each limiting seat 13, the limiting seats 13 are positioned in the corresponding yielding grooves 111, and the limiting seats 13 are simultaneously abutted against the upper groove wall and the two groove side walls of the corresponding yielding grooves 111. The two groove side walls of the abdication groove 111 are vertically and fixedly connected with rib plates 112, the two rib plates 112 are used for being abutted against one side, close to the corresponding base rod 17, of the limit seat 13, and the distance between the lower ends of the two rib plates 112 and the lower groove wall of the abdication groove 111 is larger than the height of the limit seat 13. The lifting seat 1 is provided with a jack 12 on the upper surface, and the lifting seat 1 is fixedly connected with the jack 12 through a fixing device 14.
As shown in fig. 1 and 2, the driving device 15 includes four fixing rods 83 disposed on the lower surface of the lifting seat 1, the upper ends of the four fixing rods 83 are fixedly connected to the lower surface of the lifting seat 1, the lower ends of the fixing rods 83 are fixedly connected with guide seats 81, the guide seats 81 are in one-to-one correspondence with the base rods 17, the base rods 17 are fixedly connected with slide rails 85, the guide seats 81 are slidably disposed on the corresponding slide rails 85, and the movement of the lifting seat 1 is guided by the guide seats 81. The pulley 82 is rotatably connected between two adjacent base rods 17, the pulley 82 is located at a position, close to the upper end, of the bracket 18, a pull rope 84 is wound on the pulley 82, one end of the pull rope 84 is fixedly connected to the side wall of the lifting seat 1, and the other end of the pull rope 84 is provided with the winch 8. The hoist 8 is fixedly connected to one side of the support 18, the hoist 8 is arranged at a position, close to the lower end, of the support 18, the stay rope 84 is wound on a winding roller of the hoist 8, an operator drives the lifting seat 1 to move upwards by driving the hoist 8 to wind the stay rope 84, and the operator drives the lifting seat 1 to descend by driving the hoist 8 to unwind the stay rope 84.
As shown in fig. 3 and 5, the control device 16 includes turning rods 2 disposed on each base rod 17, the turning rods 2 are in one-to-one correspondence with the limiting seats 13, one end of each turning rod 2 is hinged to the corresponding base rod 17, and the other end of each turning rod 2 is fixedly connected with the corresponding limiting seat 13. The connecting rods 21 are arranged below the turning rods 2, one ends of the connecting rods 21 are hinged to the turning rods 2, the other ends of the connecting rods 21 are hinged to sliding seats 22, the sliding seats 22 are in one-to-one correspondence with the sliding rails 85, the sliding seats 22 are connected to the corresponding sliding rails 85 in a sliding manner, and the sliding seats 22 are located above the guide seats 81. Each base rod 17 is provided with a control assembly 3 for controlling the position of the sliding seat 22, the control assembly 3 comprises a rectangular supporting plate 5 fixedly connected to one side of the sliding seat 22, the length direction of the supporting plate 5 is perpendicular to the moving direction of the corresponding sliding seat 22, the supporting plate 5 is provided with a sliding groove 51, and the length direction of the sliding groove 51 is parallel to the length direction of the supporting plate 5. Sliding blocks 52 are slidably arranged in the sliding grooves 51 along the length direction of the sliding grooves, one side, facing the central axis of the jack 12, of each sliding block 52 is fixedly connected with a first lug plate 53, one side, facing the central axis of the jack 12, of each supporting plate 5 is fixedly connected with a second lug plate 54, each second lug plate 54 is located at one end, far away from the corresponding sliding seat 22, of each supporting plate 5, and the first lug plates 53 and the second lug plates 54 are parallel to each other. The first otic placode 53 is towards the one side fixedly connected with guide bar 55 of second otic placode 54, and the axis direction of guide bar 55 is parallel with the length direction of extension board 5, overlaps on the guide bar 55 and is equipped with first ejector spring 44, and first ejector spring 44 one end butt is on first otic placode 53, and the other end butt of first ejector spring 44 is on second otic placode 54, and first ejector spring 44 is in compressed state all the time. The side of the sliding block 52 far away from the first lug plate 53 is fixedly connected with a movable shaft 31, and the movable shaft 31 is perpendicular to the support plate 5.
As shown in fig. 5, 6 and 7, a limiting plate 32 is vertically and fixedly connected to the base rod 17 corresponding to the slide 22, the limiting plate 32 is parallel to the support plate 5, the limiting plate 32 is located at one side of the support plate 5 far away from the second ear plate 54, a moving groove 33 is vertically formed at one side of the limiting plate 32 facing the support plate 5, and one end of the moving shaft 31 far away from the slide block 52 is slidably arranged in the moving groove 33 along the vertical direction. The limiting plate 32 is fixedly connected with a rotating shaft 38 towards one side of the support plate 5, a first limiting block 34 is rotatably connected to the rotating shaft 38, and the first limiting block 34 is located between the upper end of the moving groove 33 and the middle position of the moving groove 33. The baffle 35 is arranged below the first limiting block 34, the baffle 35 is fixedly connected to the limiting plate 32, and when the lower surface of the first limiting block 34 is abutted to the baffle 35, the first limiting block 34 is in a horizontal state. One side of the first limiting block 34, which is far away from the limiting plate 32, is fixedly connected with a supporting rod 36, the limiting plate 32 is also fixedly connected with a supporting rod 36, the supporting rod 36 on the limiting plate 32 is positioned below the baffle 35, the two supporting rods 36 are connected through a tension spring 37, and the tension spring 37 is always in a stretched state.
The limiting plate 32 is further provided with a guide groove 4 towards one side of the support plate 5, one end, close to the corresponding base rod 17, of the guide groove 4 is communicated with the moving groove 33, the guide groove 4 is obliquely arranged, and one end, away from the moving groove 33, of the guide groove 4 is inclined downwards. The top end of the movable groove 33 is provided with a second limiting block 43, part of the second limiting block 43 is positioned in the movable groove 33, the second limiting block 43 is obliquely arranged, the inclination angle of the second limiting block 43 is the same as that of the guide groove 4, and the upper surface of the second limiting block 43 is flush with the lower groove wall of the guide groove 4. The limiting plate 32 is provided with a containing groove 42 corresponding to the position of the second limiting block 43, the second limiting block 43 is slidably arranged in the containing groove 42 along the length direction of the guide groove 4, a through hole is formed in the second limiting block 43, a guide pillar 45 is slidably arranged in the through hole in a penetrating mode, the axial direction of the guide pillar 45 is parallel to the sliding direction of the second limiting block 43 in the containing groove 42, one end, away from the moving groove 33, of the guide pillar 45 is fixedly connected with the groove wall of the containing groove 42, and the guide pillar 45 is located in the containing groove 42. The guide post 45 is sleeved with a return spring 56, one end of the return spring 56 is fixedly connected to the second limiting block 43, the other end of the return spring 56 is fixedly connected to the groove wall of the accommodating groove 42, and the return spring 56 is always in a compressed state.
The limiting plate 32 is further provided with a guide groove 41 on one side facing the support plate 5, the upper half section of the guide groove 41 is vertically arranged, the upper end of the guide groove 41 is communicated with one end, far away from the moving groove 33, of the guide groove 4, the lower half section of the guide groove 41 is arc-shaped, and the lower end of the guide groove 41 is inclined towards the moving groove 33 and is communicated with the bottom end of the moving groove 33.
The starting state of each turning rod 2 is an open state, under which the clearance between each limiting seat 13 can be used for the lifting seat 1 to pass through, under the open state, each turning rod 2 tends to be vertical, so that each limiting seat 13 is separated from each other, and at the moment, the corresponding moving shaft 31 on each sliding seat 22 is abutted against the upper surface of the corresponding first limiting block 34. When the lifting seat 1 moves up to a certain height under the action of the winch 8, an operator needs to fold the limiting seat 13, so that the limiting seat 13 is inserted into the corresponding yielding groove 111 to support the lifting seat 1.
When the hoist 8 is started to wind the inhaul cable 84 to enable the lifting seat 1 to be lifted, the hoist 8 continues to drive the lifting seat 1 to move upwards when the lifting seat 1 is lifted to the abutting joint of the guide seat 81 and the sliding seat 22, the guide seat 81 pushes the corresponding sliding seat 22 to move upwards, the sliding seat 22 moves upwards in the process to drive the corresponding moving shaft 31 to move upwards, the moving shaft 31 abuts against the second limiting block 43 in the upward moving process, and the moving shaft 31 continues to move upwards to push the second limiting block 43 to retract into the corresponding accommodating groove 42 against the elastic force of the reset spring 56. When the movable shaft 31 moves up to pass over the second limiting block 43, the movable shaft 31 does not apply a force to the second limiting block 43, and at this time, the second limiting block 43 is reset under the elastic force of the reset spring 56 to be plugged at the top end of the movable groove 33 again. The operator controls the winding engine 8 to unwind the stay rope 84, so that the lifting seat 1 descends by a certain height, each guide seat 81 moves downwards, the acting force on each sliding seat 22 is relieved, the moving shaft 31 tends to move downwards under the gravity action of the limiting seat 13 and the sliding seat 22, the moving shaft 31 is firstly overlapped on the upper surface of the second limiting block 43, then moves along the guide groove 4 in the direction away from the moving groove 33, and the moving shaft 31 overcomes the elastic action of the first pushing spring 44 and moves towards the second lug plate 54. In the process of moving the moving shaft 31 in the guide groove 4, the moving shaft 31 moves downwards to drive the sliding seat 22 to move downwards, and the sliding seat 22 moves downwards to drive the connecting rod 21 to move downwards, so that the turning rod 2 is driven to turn downwards, and the limiting seat 13 moves towards the axis direction of the jack 12.
When the movable shaft 31 moves to one end of the guide groove 4 away from the movable groove 33, the movable shaft 31 is advanced into the guide groove 41, the movable shaft 31 continues to move downward by gravity, when the movable shaft 31 advances to the lower half of the guide groove 41, the movable shaft 31 moves away from the second ear plate 54, and when the movable shaft 31 moves to the bottom end of the guide groove 41, the movable shaft 31 returns to the bottommost end of the movable groove 33. In the moving process of the moving shaft 31 in the guide groove 41, the sliding seat 22 continuously moves downwards, so that the turning rod 2 drives the limiting seats 13 to move towards the corresponding yielding grooves 111, when the moving shaft 31 moves to the bottommost end of the moving groove 33, the turning rod 2 stops turning, the upper surfaces of the limiting seats 13 are in a horizontal state, the limiting seats 13 are in contact with the groove side walls of the corresponding yielding grooves 111, an operator unreels a guy rope 84 with a certain length through the winch 8, drives the lifting seat 1 to move downwards under the gravity of the operator, the upper surfaces of the limiting seats 13 are in contact with the groove top walls of the corresponding yielding grooves 111, at the moment, the rib plates 112 are in contact with one side of the corresponding yielding grooves 111 close to the turning rod 2, limiting of the limiting seats 13 is achieved, and at the moment, the jack 12 is supported through the four base rods 17, so that the stability of the jack 12 in the working process is ensured.
When the operator needs to release the supporting effect of the limit seat 13 on the lifting seat 1, the operator needs to start the winding cable 84 of the winding machine 8 to drive the lifting seat 1 to move upwards until the limit seat 13 is abutted on the bottom wall of the yielding groove 111, so that the rib plate 112 is separated from the corresponding limit seat 13, the limit effect of the rib plate 112 on the limit seat 13 is released, and finally, the limit seats 13 are required to be controlled to be mutually separated, and the supporting effect on the lifting seat 1 is released. To realize that the limiting seats 13 are far away from each other, the operator needs to continuously start the winch 8 to wind the inhaul cable 84 so that the lifting seat 1 moves upwards, so that the guide seat 81 moves upwards to apply upward thrust to the sliding seats 22 to drive the sliding seats 22 to move upwards, the sliding seats 22 move upwards to drive the movable shaft 31 to move upwards, and when the movable shaft 31 moves to be abutted against the lower surface of the first limiting block 34, the sliding seats 22 continuously drive the movable shaft 31 to move upwards, so that the first limiting block 34 is pushed to overturn against the elastic force of the tension spring 37. In the process of moving up the moving shaft 31, the sliding seat 22 moves up to drive each connecting rod 21 to move up, and the connecting rod 21 moves up to drive the turnover plate to turn over upwards, so that each limit seat 13 turns over upwards along with the corresponding turnover rod 2, and each limit seat 13 is separated from each other. When the movable shaft 31 moves up to over the first limiting block 34, the first limiting block 34 is reset under the action of the elastic force of the tension spring 37, at this time, an operator starts the winding machine 8 to unwind the pull rope 84, so that the lifting seat 1 descends, and accordingly, each guide seat 81 moves down to release the upward thrust action on the sliding seat 22, the movable shaft 31 is lapped on the upper surface of the first limiting block 34 under the action of gravity, the downward movement of the movable shaft 31 is limited, the downward movement of the sliding seat 22 is further limited, and the turning rod 2 is limited to turn down, so that each limiting seat 13 keeps a mutually separated state. The hoist 8 continuously unwinds the inhaul cable 84, so that the lifting seat 1 drives the jack 12 to continuously descend until the operator is convenient to detach the jack 12, and the operator stops the hoist 8, so that the lifting seat 1 is kept in a low-altitude state, and the operator is convenient to detach the jack 12.
As shown in fig. 4 and 8, the fixing device 14 includes a limiting ring 64 fixedly connected to the upper surface of the lifting seat 1, the limiting ring 64 is coaxially disposed with the lifting seat 1, the jack 12 is located in the limiting ring 64 and abuts against the inner peripheral surface of the limiting ring 64, and the limiting ring 64 has a positioning effect on the jack 12. The fixing device 14 further comprises four hinging seats 6 arranged on the upper surface of the lifting seat 1, the hinging seats 6 are located at positions, close to the edges, of the upper surface of the lifting seat 1, the four hinging seats 6 are uniformly arranged along the circumferential direction of the lifting seat 1, supporting plates 61 are arranged on the hinging seats 6, one ends of the supporting plates 61 are hinged with the corresponding hinging seats 6, the other ends of the supporting plates 61 are fixedly connected with circular arc-shaped fixing plates 62, and when the supporting plates 61 are overturned to the fixing plates 62 to abut against the jacks 12, the inner cambered surfaces of the fixing plates 62 are attached to the outer circumferential surfaces of the jacks 12.
Four fixing components 63 for fixing the position of the limiting plate 32 are arranged on the circumferential surface of the jack 12, the four fixing components 63 are uniformly arranged along the circumferential surface of the jack 12, and the fixing components 63 and the fixing plates 62 are arranged at intervals. The fixing assembly 63 includes a rectangular base 65 fixedly connected to the outer circumferential surface of the jack 12, the length direction of the base 65 is parallel to the axial direction of the jack 12, and the base 65 is located between two adjacent fixing plates 62. The fixing plates 62 extend from the upper end and the lower end of the base 65, the upper end and the lower end of the base 65 are provided with long grooves 67, the length directions of the two long grooves 67 are parallel to the length direction of the base 65, rectangular limiting clamping blocks 66 are slidably arranged in the two long grooves 67, and when the two limiting clamping blocks 66 are far away from each other, two adjacent fixing plates 62 are located between the two limiting clamping blocks 66. Two ends of the two limiting clamping blocks 66 extend towards the direction away from the base 65, two clamping grooves 68 for oppositely clamping the fixing plate 62 are formed in opposite faces of the two limiting clamping blocks 66, two clamping grooves 68 located on the same limiting clamping block 66 are symmetrically formed in two ends of the limiting clamping block 66 in the length direction, and the two clamping grooves 68 are opened towards one side of the jack 12. When the two limit clamping blocks 66 move in opposite directions, the two fixing plates 62 adjacent to the base 65 are gradually embedded in the clamping grooves 68 at corresponding positions, so that the fixing plates 62 are limited to turn away from the jack 12.
One side of the base 65, which is far away from the jack 12, is horizontally and fixedly connected with a cylindrical cross rod 7, the cross rod 7 is radially arranged along the circumferential surface of the jack 12, a sleeve 71 is sleeved on the cross rod 7, two linkage rods 72 are hinged on the sleeve 71, and the two linkage rods 72 are symmetrically arranged on two sides of the central axis of the sleeve 71. The linkage rods 72 are in one-to-one correspondence with the limit clamping blocks 66, and one end of the linkage rods 72 away from the sleeve 71 is hinged with the corresponding limit clamping block 66, and the sleeve 71 slides on the cross rod 7 to drive the two limit clamping blocks 66 to be close to or far away from each other. The outer circumference of the sleeve 71 is coaxially and fixedly connected with a first convex ring 73, and the first convex ring 73 is positioned at one end of the sleeve 71 facing the base 65. The cross rod 7 is towards the coaxial fixedly connected with second bulge loop 74 of one end of base 65, and the external diameter of second bulge loop 74 is the same with the external diameter of first bulge loop 73, and the cross rod 7 overlaps between first bulge loop 73 and second bulge loop 74 and is equipped with second ejector spring 75, and second ejector spring 75 one end butt is on first bulge loop 73, and the other end butt of second ejector spring 75 is on second bulge loop 74, and second ejector spring 75 is in compressed state all the time. The cross rod 7 is connected with a nut 76 at one end of the sleeve 71 far away from the second pushing spring 75 in a threaded manner, and the nut 76 abuts against the sleeve 71.
Before the operator installs the lifting seat jack 12, each supporting plate 61 on the lifting seat 1 is firstly shifted towards the direction away from the limiting rings 64, and then each nut 76 on the jack 12 is screwed down, so that two limiting clamping blocks 66 on the same base 65 are mutually away from and are abutted against the groove walls of the corresponding long groove 67, and the preparation before the installation of the jack 12 is completed. When installing the seat jack 12, an operator places the jack 12 in the limiting ring 64, and limits the jack 12 through the limiting ring 64. Then, the operator turns each limiting seat 13 towards the jack 12, so that each fixing plate 62 abuts against the peripheral wall of the jack 12, and at this time, the base 65 on the jack 12 is arranged at intervals with the fixing plates 62. The operator unscrews the nuts 76 one by one, so that the sleeve 71 moves away from the corresponding base 65 under the action of the elastic force of the second pushing spring 75 until the fixing plates 62 at two sides of the base 65 are clamped in the clamping grooves 68 of the two limiting clamping blocks 66, the position of the two fixing plates 62 is limited, and the operator unscrews the nuts 76, so that the position of the fixing plates 62 is limited, and the position of the jack 12 is fixed. In addition, two limiting clamping blocks 66 are arranged on each base 65, and meanwhile, the upper side and the lower side of the fixing plate 62 are limited, so that the height position of the jack 12 is limited. Further improving the stability of fixing the jack 12, being beneficial to reducing the possibility of shaking and skewing the jack 12 in the lifting and working processes and improving the use safety of the jack 12.
When the operator needs to disassemble the jack 12, the operator screws up each nut 76, so that the sleeve 71 overcomes the elasticity of the spring and moves towards the corresponding base 65, the sleeve 71 moves towards the base 65, the included angle between the two linkage rods 72 is increased, the two limiting clamping blocks 66 are driven to be away from each other, the fixing plate 62 is separated from the clamping groove 68, the limiting effect of the limiting clamping blocks 66 on the fixing plate 62 is relieved, the operator sequentially screws up each nut 76, the position limitation of each fixing plate 62 is relieved, finally the operator turns each fixing plate 62 outwards, the limiting effect on the jack 12 is relieved, and the jack 12 is conveniently taken out by the operator.
The implementation principle of the embodiment of the application is as follows: the operator is through fixed plate 62 and fixed subassembly 63 cooperation with jack 12 fixed connection on elevating platform 1, then the operator passes through hoist engine 8 control elevating platform and drives jack 12 and go up and down, triggers control assembly 3 after the elevating platform rises to certain height and makes each spacing seat 13 overturn downwards along with turning rod 2 to peg graft in elevating platform's groove 111 of stepping down, be used for supporting the elevating platform, improve the supporting effect to jack 12.
When the operator needs to dismantle jack 12, the operator passes through hoist 8 rolling cable 84, drives lifting seat 1 and rises a section distance, triggers control assembly 3 once more for spacing seat 13 upwards overturns along with turning rod 2, releases the supporting effect to lifting seat 1, then the operator passes through unreel cable 84, drives lifting seat 1 and descends until jack 12 descends to the height convenient for the staff operation, and the operator passes through the spacing effect of fixed subassembly 63 to fixed plate 62, then overturns fixed plate 62 towards keeping away from jack 12 direction, releases the spacing effect to jack 12, makes things convenient for the operator to demolish jack 12.
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 (5)
1. A large-span walking type steel box girder pushing construction device is characterized in that: the lifting device comprises a lifting seat (1), a jack (12) and a limiting seat (13), wherein a plurality of limiting seats (13) are arranged on a bracket (18), the lifting seat (1) is vertically arranged on the bracket (18) in a sliding manner, the limiting seats (13) are used for supporting the lifting seat (1), the jack (12) is arranged on the lifting seat (1), a fixing device (14) for fixing the jack (12) is arranged on the lifting seat (1), a driving device (15) for driving the lifting seat (1) to lift is arranged on the bracket (18), and a control device (16) for controlling the opening or closing of the limiting seats (13) is arranged on the bracket (18);
the control device (16) comprises a turnover rod (2) and connecting rods (21), the turnover rod (2) is in one-to-one correspondence with the limiting seat (13), one end of the turnover rod (2) is fixedly connected to the limiting seat (13), the other end of the turnover rod (2) is hinged to the support (18), the connecting rods (21) are in one-to-one correspondence with the turnover rod (2), the connecting rods (21) are hinged to the turnover rod (2), sliding seats (22) are hinged to the connecting rods (21), the sliding seats (22) are slidably arranged on the support (18) along the vertical direction, and a control assembly (3) for controlling the positions of the sliding seats (22) is arranged on the support (18);
the control assembly (3) comprises a moving shaft (31) and a limiting plate (32), the moving shaft (31) is arranged on the sliding seat (22), the limiting plate (32) is fixedly connected to the support (18), a moving groove (33) is formed in the limiting plate (32), one end of the moving shaft (31) is located in the moving groove (33), a first limiting block (34) used for limiting the moving shaft (31) is arranged on the limiting plate (32), the first limiting block (34) is rotationally connected to the limiting plate (32), a baffle (35) is fixedly connected to the lower portion of the first limiting block (34), the first limiting block (34) is abutted to the baffle (35), supporting rods (36) are fixedly connected to the first limiting block (34) and the limiting plate (32), and the two supporting rods (36) are connected through tension springs (37);
the sliding seat is characterized in that a support plate (5) is fixedly connected to the sliding seat (22), a sliding groove (51) is formed in the support plate (5), a sliding block (52) is slidably connected in the sliding groove (51), the moving shaft (31) is fixedly connected to the sliding block (52), a first lug plate (53) is fixedly connected to the sliding block (52), a second lug plate (54) is fixedly connected to one end, far away from the sliding seat (22), of the support plate (5), a guide rod (55) is fixedly connected to the first lug plate (53), the guide rod (55) is slidably arranged on the second lug plate (54), a reset spring (56) is sleeved between the first lug plate (53) and the second lug plate (54), and the reset spring (56) is in a compressed state;
the guide groove (4) is formed in the limiting plate (32), the guide groove (4) is located at the upper end of the moving groove (33), one end, close to the sliding seat (22), of the guide groove (4) is communicated with the moving groove (33), the other end of the guide groove (4) is inclined downwards, the guide groove (41) is further formed in the limiting plate (32), the upper end of the guide groove (41) is communicated with the guide groove (4), the lower end of the guide groove (41) is inclined towards the moving groove (33) and is communicated with the bottom of the moving groove (33), the limiting plate (32) is provided with the accommodating groove (42), a second limiting block (43) is arranged in an sliding mode, the upper surface of the second limiting block (43) is flush with the lower groove wall of the guide groove (4), one end, far away from the sliding groove (51), of the second limiting block (43) is provided with a first pushing spring (44), and one end, far away from the second limiting block (43), of the first pushing spring (44) is fixedly connected to the groove wall of the accommodating groove (42).
The driving device (15) comprises a guide seat (81), fixing rods (83), pulleys (82) and a winch (8), wherein a plurality of fixing rods (83) are arranged on a lifting seat (1), the guide seats (81) and the fixing rods (83) are in one-to-one correspondence, the guide seats (81) are fixedly connected to the corresponding fixing rods (83), the guide seats (81) are arranged on a support (18) in a sliding mode along the vertical direction, the pulleys (82) are rotatably connected to the support (18), the winch (8) is fixedly connected to the support (18) at a position close to the lower portion, a stay rope (84) is wound on the pulleys (82), one end of the stay rope (84) is fixedly connected to the lifting seat (1), and the other end of the stay rope (84) is connected to the winch (8).
2. The large-span walking type steel box girder pushing construction equipment as claimed in claim 1, wherein: the lifting seat (1) is provided with a plurality of abdication grooves (111), the abdication grooves (111) are in one-to-one correspondence with the limit seats (13), the limit seats (13) are positioned in the abdication grooves (111), a plurality of rib plates (112) are fixedly connected to the limit seats (13), and the rib plates (112) are positioned in the abdication grooves (111) and are abutted to the corresponding limit seats (13).
3. The large-span walking type steel box girder pushing construction equipment as claimed in claim 1, wherein: fixing device (14) are including articulated seat (6), backup pad (61) and fixed plate (62), articulated seat (6) are provided with a plurality of on spacing seat (13), backup pad (61) and articulated seat (6) one-to-one, just backup pad (61) are articulated on articulated seat (6) that correspond, fixed plate (62) fixed connection is on backup pad (61), fixed plate (62) butt is on the periphery of jack (12), be provided with a plurality of fixed subassembly (63) that are used for carrying out spacing to fixed plate (62) on jack (12), just fixed subassembly (63) and fixed plate (62) interval setting.
4. A long span walking steel box girder pushing construction equipment according to claim 3, characterized in that: the fixing assembly (63) comprises a base (65) and limiting clamping blocks (66), two long grooves (67) are formed in the base (65), the limiting clamping blocks (66) are in one-to-one correspondence with the long grooves (67), the limiting clamping blocks (66) are arranged in the corresponding long grooves (67) in a sliding mode, the limiting clamping blocks (66) are symmetrically arranged on two sides of the fixing plate (62) in the height direction, clamping grooves (68) are formed in the limiting clamping blocks (66), and the fixing plate (62) corresponding to the limiting clamping blocks (66) is clamped in the clamping grooves (68) of the limiting clamping blocks (66).
5. The large-span walking type steel box girder pushing construction equipment as claimed in claim 4, wherein: fixedly connected with horizontal pole (7) on base (65), the cover is equipped with sleeve (71) on horizontal pole (7), articulated on sleeve (71) have two gangbars (72), gangbar (72) and spacing fixture block (66) one-to-one, just gangbar (72) articulate on corresponding spacing fixture block (66), fixedly connected with first bulge loop (73) on sleeve (71), fixedly connected with second bulge loop (74) on horizontal pole (7), just horizontal pole (7) first bulge loop (73) with the cover is equipped with second top pushing spring (75) between second bulge loop (74), second top pushing spring (75) one end butt is on first bulge loop (73), the other end butt of second top pushing spring (75) is on second bulge loop (74), the one end that second top pushing spring (75) was kept away from to sleeve (71) is provided with nut (76), nut (76) threaded connection is on horizontal pole (7), and sleeve (76) butt with nut (71).
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| CN202211066544.9A CN115450120B (en) | 2022-09-01 | 2022-09-01 | Large-span walking type steel box girder pushing construction equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211066544.9A CN115450120B (en) | 2022-09-01 | 2022-09-01 | Large-span walking type steel box girder pushing construction equipment |
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| CN115450120A CN115450120A (en) | 2022-12-09 |
| CN115450120B true CN115450120B (en) | 2023-09-01 |
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| CN202211066544.9A Active CN115450120B (en) | 2022-09-01 | 2022-09-01 | Large-span walking type steel box girder pushing construction equipment |
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