CN207192620U - A kind of crane gear - Google Patents

Abstract

The utility model discloses a kind of crane gear for field of bridge construction, crane gear includes girder, fixed supporting leg, movable supporting legs, hoisting system and suspender, cart walking system.The utility model can solve the problems, such as heavy grade, small curvature, become across, broaden, on busy road build bridge etc. complex condition precast bridge section installation, compared with existing highway bridge prefabricated subsection installs equipment, efficiency of construction, security can be greatly improved, construction loads greatly reduces, road traffic is influenceed smaller, equipment support case is provided to promote the prefabricated installation method of bridge pier, there is good application prospect.

Description

A kind of crane gear

Technical field

The utility model belongs to hoisting machinery field, and in particular to a kind of crane gear for field of bridge construction.

Background technology

In the 1970s, China starts to introduce bridge prefabrication section assembling technique, but due to material technology, construction technology Horizontal and equipment technology is horizontal to be limited, and bridge quality is unsatisfactory, is not further developed within the long duration.Closely Nian Lai, as engineering material technology, construction technology are horizontal fast-developing, and increasingly raising of the government to environmental requirement, in addition Section assembling engineering method has some advantages not available for other engineering methods, and the country uses the bridge ratio of Precast Concrete Segmental Bridges engineering method In the gesture of rising year by year, thus also associated construction equipment is driven quickly to improve.

Because its build is big, weight is big, conventional crane gear is difficult to meet its installation needs for bridge prefabrication section, because This, all kinds of bridge prefabrication section installation special equipments should be needed and given birth to.The installation equipment of main flow is mainly Bridge Erector and bridge floor at present Hang, Bridge Erector can be used for prefabricated subsection and construct by cross and two kinds of engineering methods of prefabricated subsection cantilever construction, bridge floor hang be mainly used in it is pre- Cantilever construction engineering method in section processed.Bridge Erector belongs to bridge prefabrication section installation special equipment, and it has span ability by force, certainly The features such as dynamicization degree is high, small to ground Coherent traffic noise, low to ground environment requirement, its deficiency is it is also obvious that than more prominent Be high equipment cost, construction loads it is big, to more than heavy grade and small curve bad adaptability, equipment flow chart itself and construction is made The characteristics such as industry face is single all determine that equipment construction efficiency is difficult to improve.Bridge floor, which hangs to remove, has the advantages of identical with above-mentioned Bridge Erector Outside, while heavy grade and small curve constructional difficulties can also be overcome, although weak point is it is also obvious that unit low cost, is to protect Demonstrate,proving construction speed is needed, and generally requires to configure more complete equipments, multiple scope of operations while constructs, therefore equipment is totally put into not It is low.Such as preceding utility model patent ZL200920228807.5 discloses one kind can become straddle type Gantry equipment automatically, Applied to bridge erection, the crane gear employs common portal-framed structure and is supported, and floor space is big, and bearing capacity is paid no attention to Think；The crane gear has the change of conventional case ＆ wheel type cross-device, become across it is dumb, stability is relatively low；The crane gear is also only In general bridge erection method is can apply to, efficiency of construction is relatively low, it is impossible to the operation applied to the small curvature bridge of large span.

Utility model content

The utility model is in order to overcome the weak point of existing equipment, there is provided a kind of crane gear, solves existing construction The problems such as equipment construction efficiency is low, curvature bad adaptability small to large span, and with maneuverability, it is safe and efficient, simple to operate, The advantages that comprehensive utilization ratio is high-strength.To achieve the above object, the technical solution adopted in the utility model is：

A kind of crane gear, it includes：Girder, the hoisting system being arranged at the top of the girder, it is arranged on the raising Suspender below system, it is arranged on the support meanss of the girder bottom, is arranged on the cart walking of the support means bottom portion System, the support meanss include being arranged on the removable support dress of the fixed support device of girder one end and the girder other end Put, described cart walking system includes suspension, steering mechanism, supporting mechanism, tire, the top branch of the fixed support device Support center is located on two plumb lines respectively with lower support center；The upper support center of the moveable support is with Portion support center is respectively on two plumb lines.

In preferable technical scheme, under the distance on top is more than between the fixed support device and moveable support The distance in portion.

The moveable support includes：Entablature, the connecting plate of entablature crown center position, connecting plate is square Shape, column, the contact framework between column, sill, the moveable support also include the change being arranged on entablature Across traverse displacement unit.

Described change includes across traverse displacement unit：The both sides of entablature, the rectangle four corners on the outside of set respectively Top hook, each described top hook includes horizontal hook and vertical column, two top hooks of the entablature per side Horizontal hook it is relative extend, the extended end portion of the horizontal hook is provided with hook free bearing, two levels of the entablature side Change is respectively and fixedly provided with the top of hook to sell across traversing oil cylinder first by becoming across the drive end of traversing oil cylinder across traversing oil cylinder, described change Axle is provided with change across traversing oil cylinder counter-force seat, described to become across being provided with counter-force seat fixed pin shaft on traversing oil cylinder counter-force seat, described Change the top of the horizontal hook is fixed on across the traversing bearing pin of oil cylinder second by becoming across the fixing end of traversing oil cylinder, described is perpendicular Right cylinder is fixed on the both sides of entablature, the top of the vertical column portion and perpendicular to the horizontal hook bearing of trend Both sides a pair of horizontal guide sheaves are installed, the bottom of the vertical column portion is pacified in the inner side of the horizontal hook bearing of trend Equipped with a vertical carrier roller, girder two sides bottom is provided with becomes leading across the installation of traversing oil cylinder counter-force seat for described To slideway, and for supporting the hanging slideway of the top hook.

The beneficial effect of device in the utility model：

1）Support meanss are " bent leg " structure, can be rational to set crane gear to support according to carrying, the requirement in space The mechanism of device, meet different support demands.

2）Specifically use structure wide at the top and narrow at the bottom, it is ensured that crane gear support meanss are located at bridge side, and big Car EEF bogie is run below bridge projection, is not occupied public right of way, can greatly be reduced influence of the bridge construction to road traffic, Especially urban elevated bridge construction field；

3）The moveable support being hydraulically operated is arranged on bottom plane of main girder, can make the support of the side of crane gear Device changes along girder length direction, realizes and becomes across function, has very flexible adaptability for Trapezoidal bridge, and have Across the traverse displacement unit structural stability of change of body is good, becomes across efficiency high, flexible and convenient operation；

4）When road head fall is larger, leveling can be carried out by the lifting of cart walking system hangs oil cylinder, ensured The overall operation under substantially horizontal attitude of crane gear；Road cross fall is larger or when left and right road surface has certain height difference, Crane gear can the operation on the horizontal slope no more than limit value, it is not necessary to carries out leveling, is adopted simultaneously because trolley is traversing With chain drive, it is ensured that trolley will not car slipping in operation on larger horizontal slope；

5）The application of tire running mechanism, existing pavement of road can be made full use of to run, tire grounding pressure carries with conventional Weight automobile approaches, it is not necessary to carries out specially treated to road.

Brief description of the drawings

Fig. 1 is the front view of the utility model crane gear；

Fig. 2 is the dimensional structure diagram of the utility model crane gear；

Fig. 3 is the dimensional structure diagram of the utility model fixed support device；

Fig. 4 is the dimensional structure diagram of the utility model moveable support；

Fig. 5 is to become across transverse-moving mechanism dimensional structure diagram at the top of the utility model moveable support；

Fig. 6 is the utility model lifting mechanism front view；

Fig. 7 is the utility model trolley right view；

Fig. 8 is the utility model chain drive front view；

Fig. 9 is the utility model suspender front view；

Figure 10 is the utility model cart walking system right view；

Figure 11 is the utility model suspended structure schematic diagram；

Figure 12 is the utility model drive axle sectional view；

Figure 13 is the driven bridge sectional view of the utility model；

Figure 14 is the Local map of the utility model steering mechanism plan and right view；

Figure 15 is the utility model supporting mechanism schematic diagram；

Figure 16-19 are the utility model precast pier installation procedure schematic diagrames；

Figure 20-31 are the utility model head end bay prefabricated subsection installation procedure schematic diagrames；

Figure 32-39 are the utility model mid-span prefabricated subsection installation procedure schematic diagrames；

Figure 40-49 are the utility model end end bay prefabricated subsection installation procedure schematic diagrames；

Figure 50-56 are that the utility model crane gear span becomes big method schematic diagram.

Embodiment

Crane gear in the utility model can be specifically crane, Bridge Erector, hanging beam machine, lifting beam machine etc., overall As shown in Figure 1, 2, it includes girder 1, the hoisting system 4 for being arranged on the top of girder 1, is arranged on the hoisting system structure The suspender 5 of 4 lower sections, the support meanss 2 being arranged on below the girder, the cart walking for being arranged on the lower section of support meanss 2 System 3 and complete machine hydraulic pressure and electric control system.The support meanss include being arranged on the fixed support device of the one end of girder 1 21 and the moveable support 22 of the other end of girder 1, the moveable support 22 have multiple installation positions in the bottom of girder 1 Put, can be by moveable support 22 in different installation sites when crane gear is used for the bridge erection of different in width Be fixed, with realize the broadening of crane gear, become across.

The agent structure of crane gear in the utility model is as shown in Fig. 3,4,5, the fixed support device 21 and can The column axis of Mobile support device 22 is broken line, and upper support center is respectively located at two different lead from lower support center On vertical line, different branch, can be met at the rational mechanism for setting crane gear support meanss according to carrying, the requirement in space Support demand；Such as more stable support, top between fixed support device 21 and moveable support 22 can be caused Distance is less than the distance of bottom.

But the structure for more meeting raising space availability ratio demand is the fixed support device 21 and moveable support The distance on top is more than the distance of bottom between 22, and specific embodiment with broken line transitional structure, also may be used as illustrated in figs.3-5 The similar structure with round-corner transition is used as needed.Above structure can reduce while ensureing that upper lateral span length spends The floor space of crane gear complete machine, the influence to construction site is reduced as far as possible, be suitable for more construction environments.

More detailed structures are shown in figures 4 and 5, the moveable support 22 includes：Entablature 202, on The connecting plate 201 of the crown center position of crossbeam 202, connecting plate are rectangle, column 203, the contact framework 204 between column 203, Sill 205, the change that the moveable support 22 also includes being arranged on entablature 202 is across traverse displacement unit, described change Include across traverse displacement unit：The both sides of entablature 202, the rectangle four corners on the outside of set respectively top hook 225, Each described top hook includes horizontal hook and vertical column, the level of two top hook 225 of the entablature 202 per side Hook is relative to be extended, and the extended end portion of the horizontal hook is provided with hook free bearing 228, two levels of the side of entablature 202 Change is respectively and fixedly provided with the top of hook across traversing oil cylinder 221, described change across traversing oil cylinder 221 drive end by becoming across traversing oil cylinder First bearing pin 223 is provided with change across traversing oil cylinder counter-force seat 222, described to become across being provided with counter-force on traversing oil cylinder counter-force seat 222 Seat fixed pin shaft 229, described change are fixed on across the fixing end of traversing oil cylinder 221 by becoming across traversing the second bearing pin of oil cylinder 224 The top of the horizontal hook, described vertical column are fixed on the both sides of entablature 202, the top of the vertical column portion, And a pair of horizontal guide sheaves 226 are installed perpendicular to the both sides of the horizontal hook bearing of trend, the vertical column portion Bottom is provided with a vertical carrier roller on the inside of the horizontal hook bearing of trend.Become the specific knot across traverse displacement unit above Structure, can make moveable support 22 crane gear become across in operation, be securely suspended on girder, and can by become across Traversing oil cylinder 221, realize that the left and right of moveable support 22 is stable and move.

It is engaged with said structure, also shows that the two sides bottom of girder 1 is provided with for the change in Fig. 1 and Fig. 2 Across the guide slide 102 of traversing oil cylinder counter-force seat 222 installation, and for supporting the hanging slideway 101 of the top hook 225.

By becoming the structure being engaged across traverse displacement unit with guide slide 102 on girder 1 and hanging slideway 101, in hydraulic pressure Under the driving of device, the support meanss of the side of crane gear can be made to change along girder length direction, realize and become across function, it is right There is very flexible adaptability in Trapezoidal bridge, and it is good specifically to become across traverse displacement unit structural stability, becomes across efficiency Height, flexible and convenient operation.

As shown in Figure 6,7, the hoisting system 4 uses dispersed placement to the concrete structure of hoisting system 4, and hoist engine 41 is fixed On the platform 42 of the one end of girder 1, trolley 43 drives by chain drive 45 and run on the track of the top surface of girder 1. After the hoist rope 44 of the hoisting system 4 is involved by hoist engine 41, trolley is introduced after the guiding of guide pulley rack 46 Fixed pulley group 431 on 43, is re-introduced into running block 432, is drawn by fixed pulley group 431 after repeatedly winding, is finally fixed on Elevator machine platform 42.

The chain drive 45 includes chain 451, chain fixer 452, chain-wheel box 453, reducing motor 454, Concrete structure is as shown in Figure 8.

Show the attachment structure between suspender and assembly pulley 432 in Fig. 7,9, the suspender 5 and running block 432 it Between connected by eyenut 511, thrust bearing 512, suspension ring 513, it includes eyenut 511, thrust bearing 512, suspension ring 513rd, plane rotation gear wheel 521, plane rotation little gear 522, plane rotation reducing motor 523, commutation connecting rod 53, longitudinal direction are adjusted Flat oil cylinder 541, side leveling oil cylinder 542, spreader beam 55, suspension rod 56.

As the running gear of crane gear, figure 10 illustrates the cart walking system 3 includes large vehicle walking system Suspension 31, drive axle 32, driven bridge 33, steering mechanism 34, supporting mechanism 35.

Figure 11,12,13,14,15 respectively illustrate the specific part of suspension arrangement, and the suspension includes suspension body 311, put down Weigh arm 312, hanging oil cylinder 313, the first bearing pin of hanging oil cylinder 314, the second bearing pin of hanging oil cylinder 315, counter-jib bearing pin 316；Institute Stating drive axle 32 includes hydraulic motor 321, wheel side speed reducer 322, tire 302, wheel rim 303；The driven bridge 33 includes vehicle bridge 331st, tire 302, wheel rim 303；The lower end of suspension body 311 is provided with horizontal swing axle 301, the drive axle 32 or driven bridge 33 are enclosed on swinging axle 301, can swing laterally certain angle around swinging axle 301；The steering mechanism 34 includes pivoting support 341st, steering cylinder 342, steering cylinder bearing 343, steering arm 344, in the presence of the expanding-contracting action of steering cylinder 342, revolution 341 suspension 31, drive axle 32 or driven bridges 33 included below are supported, in the vertical revolution that can integrally surround pivoting support 341 The heart turns an angle, and realizes that crane gear turns between advancing, original place by vertical shift State Transferring is traversing state, original place is by traversing State Transferring is the operational mode switchings such as vertical shift state, low-angle diagonal, the steering of eight words；The supporting mechanism 35 includes support oil Cylinder seat 351, support cylinder 352；When road head fall is larger, it can be carried out by the lifting of cart walking system hangs oil cylinder Leveling, ensure the overall operation under substantially horizontal attitude of crane gear；Road cross fall is larger or left and right road surface has one When determining the discrepancy in elevation, crane gear can the operation on the horizontal slope no more than limit value, it is not necessary to leveling is carried out, simultaneously because lifting is small Car is traversing to use chain drive, it is ensured that trolley will not car slipping in operation on larger horizontal slope；Also, tire running mechanism Application, existing pavement of road can be made full use of to run, tire grounding pressure approaches with conventional truck, it is not necessary to road Carry out specially treated.

Using crane gear described in the utility model, when the bridge width constructed becomes big or reduced, it is necessary to increase Or reducing crane gear span, the crane gear becomes to be carried out according to the following steps across method：

1）As shown in figure 50, in girder（1）Close to moveable support（22）Nearby lower section, which is set, becomes across temporary support Make its support girder（1）；

2）Support meanss（22）Including support cylinder（352）, moveable support（22）The suspension of bottom includes suspension Oil cylinder（313）, ensureing to become across traversing oil cylinder（221）The bearing pin of drive end first（223）With becoming across traversing oil cylinder counter-force seat（222） Between reliably install, become across traversing oil cylinder（221）The bearing pin of fixing end second（224）Reliably install, become across horizontal stroke between horizontal hook Move oil cylinder counter-force seat（222）With girder（1）Side guide slideway（102）Between with counter-force seat fixed pin shaft（229）Reliable installation On the premise of, release moveable support（22）The connecting plate at top（201）With girder（1）The connecting bolt of bottom surface, support Oil cylinder（352）Contraction makes bottom depart from ground, support cylinder（352）Continue to shrink up to most short, then, hanging oil cylinder（313） Start to shrink at, make moveable support（22）Top connecting plate（201）With girder（1）Bottom surface departs from, and by removable support Device（22）Top hook（225）The hanging slideway being suspended on below girder side（101）On, this is shown in Figure 51-52 Step；

3）Become across traversing oil cylinder（221）Stretch out or shrink, moveable support is promoted to crane gear outside or inner side （22）, when change is across traversing oil cylinder（221）When reaching range, release and become across traversing oil cylinder counter-force seat（222）With guide slide （102）Between fixed pin shaft（229）, become across traversing oil cylinder（221）Shrink or stretch out, band dynamical reaction seat（222）Slided being oriented to Road（102）On on the outside of crane gear or medial movement, when becoming across traversing oil cylinder（221）It is contracted to most short or extend out to most long When, reinstall counter-force seat（222）With guide slide（102）Between counter-force seat fixed pin shaft（229）, become across traversing oil cylinder （221）Continue to stretch out to crane gear outside or inner side, show to become in Figure 53-54 across traversing oil cylinder（221）To crane gear The process of outside movement；

4）Repeat above-mentioned step 3）, until moveable support（22）Reach the position needed；

5）Support cylinder（352）Jack and contact ground, continuing jacking makes moveable support（22）The connection at top Plate（221）Again with girder（1）Bottom is adjacent to, and installs connecting plate（221）With girder（1）The connecting bolt of bottom and fastening, hang Hang oil cylinder（313）Jacking, makes tire（302）Ground is contacted, continues to jack hanging oil cylinder（313）Make girder（1）Bottom, which departs from, to be become Across temporary support, the change of crane gear span is completed, as shown in figure 55；

6）Remove and become across temporary support, as shown in figure 56.

Using crane gear of the present utility model, the erection construction of different types of rridges can be carried out, is particularly applied to prefabricated The bridge erection of bridge section.The construction method that the crane gear is applied to prefabricated bridge section bridge mainly includes:

1) precast pier section installation procedure, the installation of all bridge pier agent structures of precast bridge is carried out；

2) first end bay precast bridge section installation procedure, the peace of the first end bay bridge prefabrication structure of precast bridge side is carried out Dress；

3) mid-span precast bridge section installation procedure, the installation of the mid-span bridge prefabrication structure in the middle part of precast bridge is carried out；

4) last end bay precast bridge section installation procedure, the last end bay bridge prefabrication structure of precast bridge opposite side is carried out Installation.

The work progress of above each operation is specific as follows：

（One）, such as Figure 16-19, precast pier section installation procedure carries out according to the following steps：

1）Transport vehicle（6）Transport the prefabricated subsection of bridge pier first and reach erecting bed；

2）As shown in figure 16, crane gear is run to transport vehicle（6）Stop place, supporting mechanism（35）It is supported in ground, Now tire（302）Not fully come to nothing, the trolley of crane gear（43）It is moved to section stand, whereabouts suspender （5）And it is connected with the prefabricated subsection of bridge pier first, suspender（5）Rise, from transport vehicle（6）On sling the prefabricated subsection of bridge pier first；

3）The trolley of crane gear（43）Carry the prefabricated subsection of bridge pier first and be moved to girder（1）Stop span centre position Lean on, crane gear supporting mechanism（35）Withdraw, be converted to completely by tire（302）Holding state；

4）Crane gear carries the prefabricated subsection of bridge pier first and run to installation site, passes through crane gear cart walking system （3）Vertical shift, trolley（43）Traversing, suspender（5）Lifting carries out bridge pier the first prefabricated subsection exactitude position and fixed temporarily；

5）Release suspender（5）With the connection of the prefabricated subsection of bridge pier first, the prefabricated subsection of bridge pier first is completed by design technology Constructed with the cast-in-place wet seam of cushion cap；（Step 3）-5）Process figure 17 illustrates）

6）Transport vehicle（6）Transport the prefabricated subsection of bridge pier second and reach erecting bed, crane gear is run to transport vehicle（6）Stop By place, supporting mechanism（35）Ground is supported in, now tire（302）Not fully come to nothing, the trolley of crane gear （43）It is moved to section stand, whereabouts suspender（5）And it is connected with the prefabricated subsection of bridge pier second, suspender（5）Rise, from transport Car（6）On sling the prefabricated subsection of bridge pier second；

7）The trolley of crane gear（43）Carry the prefabricated subsection of bridge pier second and be moved to girder（1）Stop span centre position Lean on, crane gear supporting mechanism（35）Withdraw, be converted to completely by tire（302）Holding state；

8）Crane gear carries the prefabricated subsection of bridge pier second and run to installation site, passes through crane gear cart walking system （3）Vertical shift, trolley（43）Traversing, suspender（5）Lifting carries out examination between the prefabricated subsection of bridge pier second and the first prefabricated subsection Match somebody with somebody；

9）Hoisting hanger（5）Make between the prefabricated subsection of bridge pier second and the first prefabricated subsection matching face at a distance from, Bonding agent is smeared on matching face；

10）Whereabouts suspender（5）, the prefabricated subsection of bridge pier second with the prefabricated subsection of bridge pier first is matched face completely closely connected；

11）The vertical interim prestressing force of tensioning bridge pier, release suspender（5）With the connection of the prefabricated subsection of bridge pier second, one is completed The installation of individual bridge pier prefabricated subsection；（Step 6）-11）Process figure 18 illustrates）

12）With reference to above-mentioned steps 6）-11）Continue that the other prefabricated subsections of same bridge pier are installed until whole sections install Finish；

13）The permanent prestressing force of tensioning bridge pier, form a bridge pier agent structure；

14）Repeat the above steps 1）-13）, the installation of all bridge pier agent structures is completed, Figure 19 shows final shape State.

（Two）, such as Figure 20-31, the first end bay precast bridge section installation procedure carries out according to the following steps：

1）Falsework is set up below the non-equilibrium section of bridge in the range of first end bay is from the first bridge pier to first end bay span centre, Left side is shown in fig. 20；

2）As described in Figure 20, transport vehicle（6）Transport non-equilibrium section of prefabricated subsection of bridge first of first end bay and reach erecting bed, Crane gear is run to transport vehicle（6）Stop place, supporting mechanism（35）Ground is supported in, now tire（302）Not fully Come to nothing, the trolley of crane gear（43）It is moved to section stand, whereabouts suspender（5）, in non-equilibrium section of bridge of first end bay Installation suspension rod in the first prefabricated subsection of beam hole for hoist（56）, suspender（5）Rise, from transport vehicle（6）On to sling first end bay non-equilibrium The prefabricated subsections of Duan Qiaoliang first；

3）The trolley of crane gear（43）Carry non-equilibrium section of prefabricated subsection of bridge first of first end bay and be moved to girder （1）Span centre position is stopped, crane gear supporting mechanism（35）Withdraw, be converted to completely by tire（302）Holding state；

4）Crane gear carries first non-equilibrium section of prefabricated subsection of bridge first of end bay and run to installation site, is reseted by rising Standby cart walking system（3）Vertical shift, trolley（43）Traversing, suspender（5）Lifting carries out first non-equilibrium section of bridge first of end bay Prefabricated subsection exactitude position is simultaneously fixed on falsework；（Step 2）-4）Process shown in Figure 21-22）

5）Transport vehicle（6）Transport non-equilibrium section of prefabricated subsection of bridge second of first end bay and reach erecting bed, crane gear fortune Go to transport vehicle（6）Place is stopped, according to the same steps with the non-equilibrium section of prefabricated subsection of bridge first lifting of first end bay, by head Non-equilibrium section of prefabricated subsection of bridge second of end bay is fixed on falsework；

6）With reference to above-mentioned steps 5）, all prefabricated sections of non-equilibrium section of first end bay are installed using crane gear on falsework Section；

7）Non-equilibrium section of bridge prefabrication section of first end bay is adjusted paragraph by paragraph, and is matched by examination → pushing open → and smeared bonding agent → just The order of formula matching → interim presstressed reinforcing steel of tensioning, splices paragraph by paragraph according to from the first bridge pier of end bay first to first end bay span centre direction, Until the non-equilibrium section of bridge whole prefabricated subsection splicing of first end bay is completed, shown on the left of Figure 24；

8）No. zero section is mounted and positioned on the second bridge pier pier top temporary support, shown on the right side of Figure 24；

9）Crane gear installs the pier-side bracket for supporting No.1 section before and after the second bridge pier；

10）By on the forward and backward side No.1 segment lifting of the second bridge pier to pier-side bracket, accurately adjust and position on bracket Forward and backward No.1 section, it is different from No. zero section seam type by No.1 section, it can be carried out by two kinds of processes：A. such as forward and backward one Number it is the wet seam of cast-in-place concrete between section and No. zero section, subsequently then organizes and found wet joint template, pour wet joint concrete, support After shield to the intensity of design requirement, lashing and stretch-draw prestressing force steel strand wires；B. as being glue between forward and backward No.1 section and No. zero section Seam, subsequently then match face between forward and backward No.1 section and No. zero section and smear bonding agent, the interim prestressing force of tensioning, wait to be bonded After agent intensity reaches design requirement, lashing and stretch-draw prestressing force steel strand wires, as shown in figure 25；

11）Crane gear organizes vertical balance bracket on front side of the second bridge pier or below the position of No. two sections of rear side, such as Figure 26 institutes Show；

12）The second bridge pier front side or No. two sections of rear side are lifted, are placed on balance bracket, to No. two sections in front side or rear side Section be adjusted, align, splicing, tensioning, in the process it is ensured that No. two section weight in the front side or rear side are all by balancing Support undertakes, as shown in figure 26；

In this step, the side of section is first installed, the weight of section is undertaken by balance bracket, and its weight is not applied to bridge In structure, after symmetrical opposite side section installation therewith, bridge pier both sides weight balancing, balance bracket can is removed, All similar sections are all installed in the same manner below；

13）Cantilever is installed on rear side of the second bridge pier or the section of front side two, as shown in figure 27；

14）By balance bracket comes to nothing on front side of the second bridge pier or below No. two sections of rear side, be transferred on front side of the second bridge pier or Below No. three sections of rear side, with reference to abovementioned steps 12）、13）, it is symmetrically installed forward and backward No. three sections of the second bridge pier, such as Figure 28-29 It is shown；

15）With reference to abovementioned steps 14）Remaining forward and backward whole prefabricated subsection of the second bridge pier are symmetrically installed, as shown in figure 30；

16）The closure installed between non-equilibrium section of anterior end of first end bay and the second bridge pier balance construction posterior end wet connects Slit die plate, the wet joint concrete of closure is poured, is conserved to the intensity of design requirement, lashing and stretch-draw prestressing force steel strand wires；

17）Prestress hole path pressure grouting is simultaneously conserved to design requirement intensity；

18）Bridge structure carries out system transform, and pier-side bracket comes to nothing and is transferred to next below the second bridge pier No.1 section Locate bridge pier installation, non-equilibrium section of lower section falsework of first end bay comes to nothing, the first bridge pier and the second bridge pier by temporary support change to Permanent seat supports bridge structure, first end bay bridge prefabrication structure installation, end-state are as shown in figure 31.

（Three）, such as Figure 32-39, the mid-span precast bridge section installation procedure carries out according to the following steps：

1）As shown in figure 32, transport vehicle（6）Transport No. zero section of the 3rd bridge pier and reach erecting bed, crane gear run to Transport vehicle（6）Stop place, supporting mechanism（35）Ground is supported in, now tire（302）Not fully come to nothing, crane gear Trolley（43）It is moved to section stand, whereabouts suspender（5）, suspension rod is installed in the 3rd segment lifting hole of bridge pier zero （56）, suspender（5）Rise, from transport vehicle（6）On sling No. zero section of the 3rd bridge pier；

2）The trolley of crane gear（43）Carry No. zero section of the 3rd bridge pier and be moved to girder（1）Stop span centre position Lean on, crane gear supporting mechanism（35）Withdraw, be converted to completely by tire（302）Holding state；

3）Crane gear carries No. zero section of the 3rd bridge pier and run to above the 3rd bridge pier, passes through crane gear cart walking System（3）Vertical shift, trolley（43）Traversing, suspender（5）It is fixed after lifting carries out exactitude position to No. zero section of the 3rd bridge pier On the 3rd top of bridge pier temporary support, as shown in figure 33；

4）Crane gear is in the forward and backward pier-side bracket installed for supporting No.1 section of the 3rd bridge pier；

5）By on the forward and backward side No.1 segment lifting of the 3rd bridge pier to pier-side bracket, before accurately adjusting and position on bracket, No.1 section afterwards, it is subsequently different from No. zero section seam type according to No.1 section, it can be carried out by two kinds of processes：A. as before, It is afterwards the wet seam of cast-in-place concrete between No.1 section and No. zero section, subsequently then organizes and found wet joint template, pour wet seam coagulation Soil, conserve to the intensity of design requirement, lashing and stretch-draw prestressing force steel strand wires；B. such as forward and backward No.1 section and No. zero section Between to be glued seam, subsequently then match between forward and backward No.1 section and No. zero section face smearing bonding agent, the interim prestressing force of tensioning, After bonding agent intensity reaches design requirement, lashing and stretch-draw prestressing force steel strand wires, as shown in figure 34；

6）Crane gear organizes vertical balance bracket on front side of the 3rd bridge pier or below the position of No. two sections of rear side；

7）Lifting front side or No. two sections of rear side, are placed on balance bracket, No. two sections in front side or rear side are adjusted Whole, contraposition, splicing, tensioning, in the process it is ensured that No. two section weight in the front side or rear side are all undertaken by balance bracket, As shown in Figure 35-36；

8）Cantilever is installed on rear side of the 3rd bridge pier or the section of front side two；

9）Balance bracket comes to nothing on front side of 3rd bridge pier or below No. two sections of rear side, is transferred to the 3rd bridge pier front side or rear side Below No. three sections, with reference to abovementioned steps 7）、8）, forward and backward No. three sections of the 3rd bridge pier are symmetrically installed, as shown in figure 37；

10）With reference to abovementioned steps 9）, remaining forward and backward whole prefabricated subsection of the 3rd bridge pier are symmetrically installed, as shown in figure 38；

11）The closure installed between the second bridge pier balance construction anterior end and the 3rd bridge pier balance construction posterior end is wet Joint template, the wet joint concrete of closure is poured, is conserved to the intensity of design requirement, lashing and stretch-draw prestressing force steel strand wires；

12）Prestress hole path pressure grouting is simultaneously conserved to design requirement intensity；

13）Bridge structure carries out system transform, and pier-side bracket comes to nothing and is transferred to next below the 3rd bridge pier No.1 section Locate bridge pier installation, the 3rd bridge pier is changed to permanent seat supports bridge structure, the installation of mid-span bridge prefabrication structure by temporary support Complete, end-state is as shown in figure 39.

（Four）, such as Figure 40-49, the last end bay precast bridge section installation procedure carries out according to the following steps：

1）Shown on the left of Figure 40, below non-equilibrium section of bridge in the range of a last bridge pier to the last end bay span centre of last end bay Set up falsework；

2）Shown on the right side of Figure 40, transport vehicle（6）Transport non-equilibrium section of prefabricated subsection of bridge first of last end bay and reach installation Scene, crane gear are run to transport vehicle（6）Stop place, supporting mechanism（35）Ground is supported in, now tire（302）Not Come to nothing completely, the trolley of crane gear（43）It is moved to section stand, whereabouts suspender（5）, it is non-equilibrium in last end bay Installation suspension rod in the first prefabricated subsections of Duan Qiaoliang hole for hoist（56）, suspender（5）Rise, from transport vehicle（6）On to sling last end bay non- The prefabricated subsection of balancing segment bridge first；

3）The trolley of crane gear（43）Carry non-equilibrium section of prefabricated subsection of bridge first of last end bay and be moved to girder （1）Span centre position is stopped, crane gear supporting mechanism（35）Withdraw, be converted to completely by tire（302）Holding state；

4）Crane gear carries last non-equilibrium section of prefabricated subsection of bridge first of end bay and run to installation site, is reseted by rising Standby cart walking system（3）Vertical shift, trolley（43）Traversing, suspender（5）Lifting carries out last non-equilibrium section of bridge first of end bay Prefabricated subsection exactitude position is simultaneously fixed on falsework, as shown in figure 41；

5）Transport vehicle（6）Transport non-equilibrium section of prefabricated subsection of bridge second of last end bay and reach erecting bed, crane gear fortune Go to transport vehicle（6）Place is stopped, non-equilibrium section of prefabricated subsection of bridge second of last end bay is fixed on falsework；

6）With reference to above-mentioned steps 5）, all prefabricated sections of non-equilibrium section of last end bay are installed using crane gear on falsework Section, as shown in figure 42；

7）Non-equilibrium section of bridge prefabrication section of last end bay is adjusted paragraph by paragraph, and is matched by examination → pushing open → and smeared bonding agent → just The order of formula matching → interim presstressed reinforcing steel of tensioning, splice paragraph by paragraph to last end bay span centre direction according to from the last bridge pier of last end bay, Until the non-equilibrium section of bridge whole prefabricated subsection splicing of last end bay is completed；

8）No. zero section is mounted and positioned on the last two bridge pier pier top temporary supports of last end bay, as shown in figure 43；

9）Crane gear installs the pier-side bracket for supporting No.1 section before and after last two bridge piers；

10）By on the last forward and backward side No.1 segment lifting of two bridge piers to pier-side bracket, accurately adjust and position on bracket Forward and backward No.1 section, it is subsequently different from No. zero section seam type according to No.1 section, it can be carried out by two kinds of processes：A. such as It is the wet seam of cast-in-place concrete between forward and backward No.1 section and No. zero section, subsequently then organizes and found wet joint template, pour wet seam and mix Solidifying soil, is conserved to the intensity of design requirement, lashing and stretch-draw prestressing force steel strand wires；B. such as forward and backward No.1 section and No. zero section Intersegmental that face smearing bonding agent is subsequently then matched between forward and backward No.1 section and No. zero section to be glued seam, tensioning in advance should temporarily Power, after bonding agent intensity reaches design requirement, lashing and stretch-draw prestressing force steel strand wires, as shown in figure 44；

11）Crane gear vertical balance bracket of group on front side of last two bridge piers or below the position of No. two sections of rear side；

12）Crane gear lifting front side or No. two sections of rear side, are placed on balance bracket, to No. two sections in front side or rear side Section be adjusted, align, splicing, tensioning, in the process it is ensured that No. two section weight in the front side or rear side are all by balancing Support undertakes, as shown in figure 45；

13）On rear side of last two bridge piers of the cantilever installation or section of front side two, as shown in figure 46；

14）Balance bracket comes to nothing on front side of last two bridge piers or below No. two sections of rear side, be transferred on front side of last two bridge piers or after Below the section of side three, with reference to abovementioned steps 12）、13）, last forward and backward No. three sections of two bridge piers are symmetrically installed, as shown in figure 47；

15）With reference to abovementioned steps 14）, it is symmetrically installed remaining forward and backward whole prefabricated subsection of last two bridge piers；

16）Install that the closure between non-equilibrium section of posterior end of last end bay and last two bridge piers balance construction anterior end is wet to be connect Slit die plate, the wet joint concrete of closure is poured, is conserved to the intensity of design requirement, lashing and stretch-draw prestressing force steel strand wires, such as Shown in Figure 48；

17）Prestress hole path pressure grouting is simultaneously conserved to design requirement intensity；

18）Bridge structure carries out system transform, and pier-side bracket comes to nothing below last two bridge pier No.1 sections, last two bridge piers and end One bridge pier is changed to permanent seat supports bridge structure, last end bay bridge prefabrication structure installation, final shape by temporary support State is as shown in figure 49.

This construction method is that crane gear installs precast pier section, the first end bay of installation, mid-span, last end bay precast bridge section Section and crane gear become complete set, the construction technology of system formulated across construction, this technological specification crane gear peace Bridge pier prefabricated subsection, bridge prefabrication section are filled until each step of formation bridge main body structure, implements to be safe and efficient Heavy equipment becomes provides guarantee across construction；Solve the irrealizable precast pier section installation problem of legacy equipment institute, overcome The shortcomings such as legacy equipment low construction efficiency, construction loads are big, the rate of comprehensive utilization of equipment is low, are provided for urban elevated bridge construction The more construction technology and equipment solution of advantage, can significantly shorten the project construction cycle, great economic benefit and society Benefit.

In the construction method of foregoing bridge erection, when bridge width becomes big or becomes small, it is necessary to increased or decrease lifting Equipment span, the crane gear become across method by foregoing across the method progress of change of the utility model.This can be taken full advantage of Become the characteristics of across traverse displacement unit in utility model, become across flexible, stably, adaptability is strong, suitable for applying for various width bridges Work process.

Although describing the utility model according to specific embodiment, according to teaching herein, people in the art It is also obvious that member, which makes other modes modification to the utility model,.The scope of protection of the utility model is with claims Scope be limited, but other and technical scheme of the utility model claims without essential distinction also should the utility model Protection domain in.

Claims (7)

1. a kind of crane gear, it includes：Girder（1）, be arranged on the girder（1）The hoisting system at top（4）, be arranged on institute State hoisting system（4）The suspender of lower section（5）, be arranged on the girder（1）The support meanss of bottom（2）, be arranged on the support Device（2）The cart walking system of bottom（3）, the support meanss are including being arranged on girder（1）The fixed support device of one end （21）And girder（1）The moveable support of the other end（22）, it is characterised in that：The fixed support device（21）Top Support center is located on two plumb lines respectively with lower support center；The moveable support（22）Upper support in The heart is located on two plumb lines respectively with lower support center.

2. crane gear as claimed in claim 1, it is characterised in that：The fixed support device（21）With removable support dress Put（22）Between top distance be more than bottom distance.

3. the crane gear as described in claim 1 or claim 2, it is characterised in that：The cart of described crane gear is walked Row system（3）Including suspension（31）, steering mechanism（34）, supporting mechanism（35）, tire（302）.

4. crane gear as claimed in claim 3, it is characterised in that：The moveable support（22）Including：Entablature （202）, entablature（202）The connecting plate of crown center position（201）, column（203）, column（203）Between contact framework （204）, sill（205）, wherein the connecting plate（201）For rectangle, the moveable support（22）Also include setting In entablature（202）On change across traverse displacement unit.

5. crane gear as claimed in claim 4, it is characterised in that：Described change includes across traverse displacement unit：In entablature （202）Both sides, the rectangle four corners on the outside of set respectively top hook（225）.

6. crane gear as claimed in claim 5, it is characterised in that：Each described top hook includes horizontal hook and vertically Column, entablature（202）Link up with two tops per side（225）Horizontal hook it is relative extend, the elongated end of the horizontal hook Portion is provided with hook free bearing（228）, the entablature（202）Change is respectively and fixedly provided with the top of two horizontal hooks of side across traversing oil Cylinder（221）, described change is across traversing oil cylinder（221）Drive end by become across the traversing bearing pin of oil cylinder first（223）Change is installed Across traversing oil cylinder counter-force seat（222）, the change is across traversing oil cylinder counter-force seat（222）On counter-force seat fixed pin shaft is installed（229）, Described change is across traversing oil cylinder（221）Fixing end by become across the traversing bearing pin of oil cylinder second（224）It is fixed on the horizontal hook Top, described vertical column is fixed on entablature（202）Both sides, the top of the vertical column portion and vertical A pair of horizontal guide sheaves are installed in the both sides of the horizontal hook bearing of trend（226）, the bottom of the vertical column portion exists One vertical carrier roller is installed on the inside of the horizontal hook bearing of trend.

7. crane gear as claimed in claim 6, it is characterised in that：The girder（1）Two sides bottom is provided with for institute Change is stated across traversing oil cylinder counter-force seat（222）The guide slide of installation（102）, and for supporting the top to link up with（225）Hang Hang slideway（101）.