CN109736212A - A kind of rolling friction type stride thrustor of bridge subsection installation - Google Patents
A kind of rolling friction type stride thrustor of bridge subsection installation Download PDFInfo
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- CN109736212A CN109736212A CN201910053360.0A CN201910053360A CN109736212A CN 109736212 A CN109736212 A CN 109736212A CN 201910053360 A CN201910053360 A CN 201910053360A CN 109736212 A CN109736212 A CN 109736212A
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Abstract
The invention discloses a kind of rolling friction type stride thrustors of bridge subsection installation, including groove profile walking track pallet (1) being welded by four cycle side plates and floor combination, it is fixed on the long stroke pushing tow hydraulic jack (2) that pallet is orthogonal on the end plate of pushing tow direction, it is placed in pallet and rolls sliding platform (3) and connect with pushing tow hydraulic jack pin shaft, it rolls and places simultaneously fixation steel plate box (4) on sliding platform (3), the interior placing steel tubes cup type piston shoes (5) of steel plate box (4) simultaneously connect with lateral correction hydraulic jack (6) pin shaft that steel plate box is orthogonal on the side plate of pushing tow direction is fixed on, jacking hydraulic jack (7) is placed in steel pipe cup type piston shoes.Local stress when bridge pier in bridge incremental launching installation process or the horizontal thrust at the top of temporary rest pier and jack up girder is greatly reduced in the present invention, can be realized smooth and quick pushing tow.
Description
Technical field
The present invention relates to a kind of rolling friction type stride thrustors of bridge subsection installation, belong to civil engineering bridge and apply
Work installs equipment field.
Background technique
In civil engineering bridge construction, the prefabricated concrete bridge of various cross-lines, the highway in cross a river road and municipal works
Installation with Steel Bridge needs to be installed under conditions of uninterrupted traffic and Navigation in Navigable.In recent years, on bridge pier
Or thrustor is set on temporary rest pier, by the segmented production of newly building bridge, continuous drawing or exchange hold up incremental launching construction gradually
Increase, major advantage is to influence very little to the lower section traffic environment and traffic status of newly building bridge.Well known bridge subsection peace
The stride thrustor major way of dress construction is that the hydraulic jack for jacking up bridge beam body is placed on slide plate, jack bottom
The fixed engineering plastics piston shoes in portion rub with the slide plate friction type being placed on bridge pier pier top or support frame top girder steel for sliding
It wipes.Despite the use of lithium saponify lubricates for the friction, but because belongs to the relationship of contact surface sliding friction opposite with contact surface, from bridge
The frictional force of static friction to the dynamic friction for pushing beam body mobile of the starting of segment pushing tow is still larger, typically constitutes from jack-up bridge beam body
10% or so of load, multiple pushing tow jack are more also easy to produce discreteness shake when working at the same time, and increase bridge pier or interim
Horizontal thrust at the top of buttress continually works alternatively from static friction to dynamic friction and affects the smooth incremental launching construction of bridge.
Summary of the invention
Technical problem: in view of the deficiencies of the prior art, the present invention is intended to provide a kind of rolling friction of bridge subsection installation
Type stride thrustor the characteristics of using rolling friction significantly less than sliding friction, jacks hydraulic jack load steel placing
The rolling friction form substitution known sliding friction form for placing slide plate of multiple rollers is set below plate platform board, improves bridge
Horizontal thrust at the top of the ride comfort of pushing installation and less bridge pier or temporary rest pier, and utilize conventional bridge prestress tensioning
Punching jack increases diameter of cylinder, increases the contact area and jacking stability of oil cylinder top surface and jack up girder, reaches " a top
It is dual-purpose " purpose.
Technical solution: rolling friction type stride thrustor provided by the invention, by the liquid of well known jacking bridge beam body
Piston shoes block under pressure jack had not only made the mobile sliding of longitudinally reciprocal long stroke on slide plate, but also made lateral correction hydraulic jack
" the unification working method " of short stroke sliding is changed to " mask work mode ", i.e. the long stroke longitudinal direction pushing tow of groundwork mode is adopted
With rolling friction pattern, ride comfort when reducing jacking force and being more conducive to guarantee more pusher synchronous push, underwork side
Laterally correction still uses sliding friction pattern to formula short stroke.To realize rolling friction type pushing tow working method, hydraulic thousand will be jacked
Jin top, which is placed on, to be rolled on sliding platform, and the connected roller of multiple rows of multiple carrier bars is arranged under the platform board of platform truck, is fixed on
The piston rod of long stroke pushing tow hydraulic jack on groove profile walking track pallet is connect with platform truck pin joint is rolled, so that rolling
The longitudinally reciprocal orientation straight line walking in groove profile walking track pallet of the roller of platform truck rolls, and drives the bridge beam body of jack-up vertical
To movement.
A kind of rolling friction type stride thrustor of bridge subsection installation of the invention includes by four cycle side plates and bottom plate
The walking track pallet of groove profile made of Combination Welding, it is hydraulic to be fixed on the long stroke pushing tow that pallet is orthogonal on the end plate of pushing tow direction
Jack, interior place of pallet roll sliding platform and connect with pushing tow hydraulic jack pin shaft, roll and put on sliding platform
It sets and fixation steel plate box, placing steel tubes cup type piston shoes and is orthogonal on the side plate of pushing tow direction with steel plate box is fixed in steel plate box
Laterally correction hydraulic jack pin shaft connection, steel pipe cup type piston shoes are interior to place jacking hydraulic jack.
It is described roll sliding platform platform board have multiple triangles put more energy into floor and vertical support plate welding plus
By force, platform board anti-eccentric load ability in laterally correction is improved；It crosses and the roller for being fixedly welded on vertical support plate is horizontal
The connected roller of multiple rows of multiple carrier bars is placed under force bearing plate, realizes the platform truck rolling friction move mode under heavy duty；Platform board
Front and back is respectively set 1 pair of lateral limited roller and is stuck in groove profile walking track pallet on the outside of lower vertical support plate, retains unilateral
1~3mm of gap limits rolling sliding platform and makees the orientation straight reciprocating in pushing tow stroke.
Correspond in pushing tow hydraulic jack stroke range on the outside of the vertical support plate perpendicular to lateral plates welding one
Front half section is installed radially to cut off the steel sleeve of half and can rotate around steel cylindrical shaft, steel bushing pipe end to steel cylindrical shaft, on axis
Head welding handle adjustable rotation angle makes the steel sleeve for cutting off half be caught in progress detent locking pushing tow in the snap-gauge tooth of pallet
Position prevents sliding platform rollback；Pass through two leveling screws between the two vertical support plate of rolling sliding platform one end
It screws in degree of lip-rounding steel plate box side plate and can rotate, pin shaft is inserted into degree of lip-rounding steel plate box roof hole and is fixed on the vertical end plate of grooved pallet
On pushing tow hydraulic jack long stroke oil cylinder monaural plate connection.
The groove profile walking track pallet length is equal to rolling sliding platform length and adds pushing tow stroke length, width etc.
Width adds preset clearance between rolling mobile platform two sides lateral Displacement idler wheel；Longitudinal two sides steel plate of groove profile walking track pallet
Height is put more energy into floor root height lower than platform board, is processed into dentation within the scope of groove profile walking track pallet pushing tow stroke length
Pushing tow position locks snap-gauge.
The placement and the steel plate box being fixed on the platform board for rolling platform truck are that surrounding steel plate side plate and bottom plate weld
It is connected into type, mirror surface stainless steel plate is fixed on steel plate box inner bottom plating as slide plate, the steel plate box inside orthogonal with bridge longitudinal direction pushing tow
Clear length adds the positive negative quantity of transverse direction correction set, the steel plate in longitudinal pushing tow direction equal to steel pipe cup type piston shoes length in box is placed in
Clear length is slightly larger than steel pipe cup type piston shoes width on the inside of box；The multiple bolts of the bottom plate of steel plate box are flat with rolling sliding platform
Platen is fixed, and dismountable connection type is formed.
The jacking hydraulic jack being placed in steel pipe cup type piston shoes is directly utilized bridge prestress tensioning and wears
Core type hydraulic jack, steel pipe and the rectangle steel sole plate of steel pipe cup type piston shoes are welded and fixed, solid with bolt above rectangle steel sole plate
Determine punching jack inner retainer disc, lower section is fixed engineering plastic alloy slide plate with dormant bolt, connected on the steel pipe lateral wall of piston shoes
Connect the otic placode connecting with hydraulic jack pin shaft of laterally rectifying a deviation；It jacks and places the load steel with positioning plectane at the top of hydraulic jack
Plate forms the lifting steel platform of rest bridge beam body.
The utility model has the advantages that compared with the existing technology, the present invention has the following advantages:
1, the characteristics of rolling friction is significantly less than sliding friction is made full use of, jacks hydraulic jack force-bearing steel plate placing
The rolling friction form substitution known sliding friction form for placing slide plate of multiple rollers is set below platform board, improves bridge top
Push away the horizontal thrust at the top of the ride comfort and less bridge pier or temporary rest pier of installation.
2, the piston shoes block under the hydraulic jack of well known jacking bridge beam body longitudinally reciprocal long row had both been made on slide plate
Journey sliding is moved, and " the unification working method " of making the short stroke sliding movement of laterally correction hydraulic jack changes into " separation
Working method ", i.e. the long stroke longitudinal direction pushing tow of groundwork mode are mobile using rolling friction, and underwork mode short stroke is horizontal
It is still mobile using sliding friction to correction, by " quiet " to " dynamic " reciprocating motion when more conducively guaranteeing more pusher synchronous push
Ride comfort.
3, very heavy as the jacking of jack up girder using prestressed stretch-draw punching hydraulic jack in conventional science of bridge building
Top, the diameter of cylinder of punching oil cylinder is big, increases the pressure-bearing plate suqare for being held on jack top surface, is conducive to reduce and save
Partial pressing's stress at the closely connected position of section bridge beam body.
Detailed description of the invention
Fig. 1 is that bridge subsection of the invention installs rolling friction type stride thrustor general assembly schematic diagram；
Fig. 2 (a) is the structural schematic diagram of sliding platform 3 of the invention, and Fig. 2 (b) is the side view knot of sliding platform 3
Structure schematic diagram, Fig. 2 (c) are that the degree of lip-rounding steel plate box 15 of 3 end of sliding platform and the connection of long stroke pushing tow hydraulic jack 2 are shown
It is intended to；
Fig. 3 (a) is flute profile walking 1 schematic diagram of track pallet of the invention, and Fig. 3 (b) is that the detent of sliding platform 3 fills
The rotation position schematic diagram in pushing tow walking operating condition is set, Fig. 3 (c) is the rotation position schematic diagram under pushing tow locking operating condition；
Fig. 4 (a) is 4 schematic diagram of steel plate box for being held on groove profile and walking in track pallet of the invention, and Fig. 4 (b) is steel plate
Mirror surface stainless steel plate 22 fixes schematic diagram in box；
Fig. 5 (a) is that the steel pipe cup type piston shoes 5 being placed in steel plate box of the invention and punching jack hydraulic jack 2
Assembling schematic diagram, Fig. 5 (b) are Fig. 5 (a) A-A sectional view, i.e. the rectangle steel bottom of 2 bottom piston shoes of long stroke pushing tow hydraulic jack
Punching jack inner retainer disc 26 and 30 assembling section of top pressure-bearing supporting plate are fixed on plate 25, Fig. 5 (c) is 5 steel pipe 23 of piston shoes
The otic placode 29 of upper welding and the pin shaft connection schematic diagram of correction hydraulic jack 6；Fig. 5 (d) is correction hydraulic jack 6 and steel
The connection schematic diagram of casing 23.
Fig. 6 (a) is the construction schematic diagram that punching of the invention jacks that hydraulic jack 7 has vertically jacked beam body, Fig. 6 (b)
For the construction schematic diagram of one stroke of longitudinal pushing tow of long stroke pushing tow hydraulic jack 2 of the invention, Fig. 6 (c) is of the invention
Jacking 7 oil cylinder of hydraulic jack retraction, beam body drop down onto the construction schematic diagram of pier, and Fig. 6 (d) is long stroke pushing tow liquid of the invention
Press the construction schematic diagram of 2 oil cylinder of jack, one stroke of retraction.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the invention will be further described.
As shown in Figure 1, by flute profile walking track pallet 1, long stroke pushing tow hydraulic jack 2, sliding platform 3, steel plate
Box 4, steel pipe cup type piston shoes 5, correction hydraulic jack 6, punching jacking hydraulic jack 7 are assembled into suitable for bridge subsection top
Push away the rolling friction type stride thrustor of installation.
The realization of bridge beam body longitudinal direction pushing installation function: pushing tow side along longitudinal direction under the platform board 8 of the sliding platform 3
To two pieces of parallel vertical supporting plates 10 of welding, welding triangle is put more energy into the reinforcement of floor 9 on the outside of junction.Every piece of vertical supporting plate
A pair of of lateral Displacement idler wheel 13 is arranged in 10 outsides, welds a pair of of steel cylindrical shaft 14 perpendicular to lateral plates, production front half section is radially
The steel sleeve 15 for cutting off half is rotated around steel cylindrical shaft 14, and long handle 16 is welded convenient for rotating handle drive in 15 end of steel sleeve
15 detent of steel sleeve locks pushing tow position in 21 tooth of block board of groove profile walking track pallet 1, has prevented longitudinal slope bridge incremental launching
When 3 rollback of sliding platform, be welded and fixed the horizontal force bearing plate 11 of roller between two pieces of vertical supporting plates 10, several rollers 12 by
Carrier bar series connection is placed under horizontal force bearing plate 11, realizes that sliding platform 3 is made to roll walking under heavy loads.The flute profile row
It walks track pallet 1 to be welded by bottom plate, side plate, end plate, the length of bottom plate and side plate adds top according to the length of sliding platform 3
It pushes away stroke length to make, the width of bottom plate and end plate adds pre- equal to width between rolling 3 two sides lateral Displacement idler wheel 13 of mobile platform
Stay the gap 1~3mm, the height of side plate and end plate is according to the 9 root further processing of floor of putting more energy into for being lower than platform board 8, two blocks of side plates
Dentation snap-gauge 21 is processed into upper surface within the scope of pushing tow stroke length, and vertical side plate face is welded steel cylindrical shaft 14, covered in steel
The semi-steel pipe that steel sleeve 15 on cylindrical shaft 14 stretches out can just be stuck in dentation card in rotating by operation 45 degree for handle 16 of welding
Locking in plate 21.Long stroke pushing tow jack 2 is fixed by end flanges disk and a side end panel of groove profile walking track pallet 1.Institute
The degree of lip-rounding steel plate box 18 stated can be consolidated with the end circular hole for rolling 3 liang of vertical support plates 10 of sliding platform by leveling screw 17
It is fixed, it is connect with the oil cylinder monaural plate 20 of pushing tow hydraulic jack 2 by pin shaft 19.It is placed in flute profile walking track pallet 1
Sliding platform 3 and 2 pin shaft of long stroke pushing tow jack may be implemented to shelve and the bridge on sliding platform 3 after assembling
It is mobile that beam body makees longitudinal rolling pushing tow.
Bridge beam body vertically jacks and the realization of lateral deviation-correcting function: the feed-through hydraulic of the jacking bridge beam body is very heavy
Top 7 is placed in steel pipe cup type piston shoes 5, the close lower part for being posted in feed-through hydraulic jack 7 of the steel sleeve 23 of piston shoes 5, steel bushing
A pair of otic placode 29 with pin hole is welded on pipe 23, rectangle steel sole plate 25 is welded in the bottom of steel sleeve 23, and length and width is equal to steel
The outer diameter of casing 23.7 inner retainer disc 26 of punching jack is fixed above rectangle steel sole plate 25 with bolt, it is solid with dormant bolt 27
Engineering plastic alloy slide plate 28 is determined in 25 lower section of rectangle steel sole plate, and 28 bottom surface of slide plate production groove can fill in lubricating oil.Described
Steel plate box 4 is welded by four blocks of steel plate side plates with bottom plate, and the inside length of steel plate box 4 is equal to 5 length of steel pipe cup type piston shoes and adds
The transverse direction of setting is rectified a deviation positive negative quantity, bigger 5 width of steel pipe cup type piston shoes of 4 inboard width of steel plate box, on the bottom plate of steel plate box 4 with shifting
The 8 corresponding position prepared screw-bolt hole of platform board of moving platform vehicle 3, mirror face stainless steel plate 23, the steel that point is welded on 4 bottom plate of steel plate box
The bottom plate of plate box 4, the platform board 8 of sliding platform 3 are connected and fixed with multiple bolts 23.The steel plate box 4 with top
Push away fixed correction hydraulic jack 6, the telescopic oil cylinder and 5 steel of steel pipe cup type piston shoes of jack 6 in the orthogonal lateral side plate in direction
29 pin shaft of otic placode connection on casing.The feed-through hydraulic jack 7 in steel pipe cup type piston shoes 5 that is placed on is able to achieve
Bridge beam body is jacked, is placed in steel plate box 4 steel plate cup type piston shoes 5 and the jack 7 being placed in piston shoes 5 in fixation
Movement can be slid laterally under the correction hydraulic jack 6 on steel plate box 4 drives, pushing tow direction when realizing jacking and pushing bridge beam body
Fine tuning correction.
The above, preferable specific embodiment only of the invention, but be not limited in protection scope of the present invention
This, anyone skilled in the art within the technical scope of the present disclosure, the variation that can readily occur in and replaces
It changes, should be covered by the scope of protection of the present invention.
Claims (6)
1. a kind of rolling friction type stride thrustor of bridge subsection installation, which is characterized in that including by four cycle side plates and bottom
Board group closes groove profile walking track pallet (1) being welded, and is fixed on the long stroke top that pallet is orthogonal on the end plate of pushing tow direction
It pushes away hydraulic jack (2), is placed in pallet and roll sliding platform (3) and connect with pushing tow hydraulic jack pin shaft, rolled and move
On moving platform vehicle (3) place and fixation steel plate box (4), the interior placing steel tubes cup type piston shoes (5) of steel plate box (4) and be fixed on steel plate
Box is orthogonal to lateral correction hydraulic jack (6) the pin shaft connection on the side plate of pushing tow direction, places jacking in steel pipe cup type piston shoes
Hydraulic jack (7).
2. the rolling friction type stride thrustor of bridge subsection installation according to claim 1, it is characterised in that described
Roll sliding platform (3) platform board (8) have multiple triangles put more energy into floor (9) and vertical support plate (10) welding plus
By force, platform board (8) anti-eccentric load ability in laterally correction is improved；Cross and be fixedly welded on the rolling of vertical support plate (10)
The connected roller (12) of multiple rows of multiple carrier bars is placed under the horizontal force bearing plate of column (11), realizes that the platform truck rolling friction under heavy duty moves
Flowing mode；1 pair of lateral limited roller (13) is respectively set in front and back on the outside of vertical support plate (10) under platform board (8), and is stuck in slot
Type is walked in track pallet (1), and unilateral side 1~3mm of gap is retained, and is limited rolling sliding platform (3) and is made to determine in pushing tow stroke
To straight reciprocating.
3. the rolling friction type stride thrustor of bridge subsection installation according to claim 1, it is characterised in that described
Vertical support plate (10) on the outside of correspond in pushing tow hydraulic jack stroke range and weld a pair of of steel cylinder perpendicular to lateral plates
Axis (14), on axis installation front half section radially cut off half steel sleeve (15) and can be around steel cylindrical shaft (14) rotation, steel bushing
Weld the snap-gauge that handle (16) adjustable rotation angle makes the steel sleeve (15) for cutting off half be caught in pallet (1) in pipe (15) end
(21) detent is carried out in tooth and lock pushing tow position, prevent sliding platform rollback；Described rolling sliding platform (3) one end two is perpendicular
It can simultaneously be rotated to two leveling screws (17) screw-in degree of lip-rounding steel plate box (18) side plates are passed through between support plate (10), degree of lip-rounding steel plate box
(18) length of pin shaft (19) with the pushing tow hydraulic jack (2) being fixed on the vertical end plate of grooved pallet (1) is inserted into roof hole
Stroke oil cylinder monaural plate (20) connection.
4. the rolling friction type stride thrustor of bridge subsection installation according to claim 1, it is characterised in that described
Groove profile walking track pallet (1) length be equal to and roll sliding platform (3) length and add pushing tow stroke length, width, which is equal to, to be rolled
Width adds preset clearance between the lateral Displacement idler wheel of mobile platform two sides；Longitudinal two sides steel plate of groove profile walking track pallet (1) is high
Degree is put more energy into floor (9) root height lower than platform board (8), is added in groove profile walking track pallet (1) pushing tow stroke length
Work locks snap-gauge (21) at dentation pushing tow position.
5. the rolling friction type stride thrustor of bridge subsection installation according to claim 1, it is characterised in that described
Placement and be fixed on roll platform truck (3) platform board (8) on steel plate box (4) be surrounding steel plate side plate be welded into bottom plate
Type fixes mirror surface stainless steel plate (22) on steel plate box (4) inner bottom plating as slide plate, the steel plate box orthogonal with bridge longitudinal direction pushing tow
(4) inside clear length adds the positive negative quantity of transverse direction correction set, longitudinal pushing tow equal to steel pipe cup type piston shoes (5) length in box is placed in
Clear length is slightly larger than steel pipe cup type piston shoes (5) width on the inside of the steel plate box (4) in direction；The multiple bolts of the bottom plate of steel plate box (4)
(23) it is fixed with the platform board (7) for rolling sliding platform (3), forms dismountable connection type.
6. the rolling friction type stride thrustor of bridge subsection installation according to claim 1, it is characterised in that described
The jacking hydraulic jack (2) being placed in steel pipe cup type piston shoes (5) bridge prestress tensioning punching liquid is directly utilized
Jack is pressed, steel pipe (24) and the rectangle steel sole plate (25) of steel pipe cup type piston shoes are welded and fixed, and use above rectangle steel sole plate (25)
Bolt is fixed punching jack inner retainer disc (26), and lower section is fixed engineering plastic alloy slide plate (28) with dormant bolt (27), sliding
The otic placode (29) connecting with hydraulic jack (6) pin shaft of laterally rectifying a deviation is connected on steel pipe (24) lateral wall of boots；Jack hydraulic thousand
The force-bearing steel plate (30) with positioning plectane is placed at the top of jin top (7), forms the lifting steel platform of rest bridge beam body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053360.0A CN109736212B (en) | 2019-01-21 | 2019-01-21 | Rolling friction type walking pushing device for bridge segment installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053360.0A CN109736212B (en) | 2019-01-21 | 2019-01-21 | Rolling friction type walking pushing device for bridge segment installation |
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| CN109736212A true CN109736212A (en) | 2019-05-10 |
| CN109736212B CN109736212B (en) | 2023-09-19 |
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