CN208362919U - The adjustable U-shaped tunnel beam car excessively of wheelspan - Google Patents

Abstract

A kind of adjustable U-shaped tunnel beam car excessively of wheelspan, including at least car body, traveling wheel group and carry beam trolley on the back, the car body includes two curb girders for being located in the middle a central sill and two sides, the longitudinal gap of the central sill has placed more crossbeams, and the outside both ends of the more crossbeams are respectively connected to the lower end of curb girder to form the U-shaped structure of car body；The traveling wheel group is located at the curb girder lower end of car body and carries out removable connection with the curb girder of car body, and the lower end of the curb girder is equipped with two kinds of support levels of traveling wheel group to realize the adjusting of wheelspan between two kinds of support levels；The beam trolley of carrying on the back includes to carry beam trolley on the back before being removably attached to carry beam trolley on the back with after；Thus, the utility model utilizes box beam flange lower room to the full extent, reduce shipping height, it is able to satisfy the transport needs of large span large-tonnage box beam, especially it was able to achieve tunnel transport box beam needs, it also increases front chassis to go ahead line range, improves longitudinal stability when trolley before Bridge Erector takes beam.

Description

The adjustable U-shaped tunnel beam car excessively of wheelspan

Technical field

The utility model relates to the technical fields of beam car more particularly to a kind of adjustable U type of wheelspan to cross tunnel beam car.

Background technique

China express railway mostly uses interface height strategy, and high speed railway prefabricating box girder is mainly with span 32m simple supported box beam Based on prefabricated, the method for cast in situs or section assembling is mainly used to construct more than the above simple supported box beam of span 32m.With high speed The high speed railway construction of the increase of railway construction scale, western mountainous areas and the coastal region in east China increases year by year, these area high speeds Railway crosses over the deep foundation bridge in river, the high pier bridge of cheuch and soft base depression area, and substructure cost is built in bridge If the specific gravity in expense is larger, the use of span 32m simple supported box beam is largely economic index reduction, is greater than if simple supported box beam uses , can only be using the construction of the method for cast in situs or section assembling, economic index decline when 32m, and quality control difficulty is big. With Bridges in Our Country design, the maturation of construction technology, the test data abundant of combined test work accumulation and test is relied on to grind Study carefully achievement, develops for China express railway bridge construction prefabricated case beam to large span large-tonnage direction and lay the foundation.

2016 annual Chinese Railway parent companys preside over and have organized high-speed railway large span simply supported beam construction key technology to grind Study carefully, proposes across the high-speed railway freely-supported prefabricated case beam of speed per hour 40m.32m of the box beam compared with before big, width across the specific span of box beam The features such as wide, height height, weight weight, on the other hand since tunnel face size is constant, beam car is needed to pack box beam and bridge formation Machine crosses tunnel, by tunnel end face limit, crosses the design of tunnel beam car to the mating low level for packing box beam and causes extreme difficulties.It is suitable at present Tunnel beam car structure type should be crossed in the minimum of span 32m girder span, be unable to satisfy the demand for transporting beam in tunnel, it is therefore desirable to design A kind of Novel girder delivery vehicle requires to solve to pack large span large-tonnage simply supported beam after then.

For this purpose, the designer of the utility model, in view of drawbacks described above, by concentrating on studies and designing, synthesis is long-term for many years It is engaged in the experience and achievement of related industry, researching and designing goes out a kind of adjustable U-shaped tunnel beam car excessively of wheelspan, to overcome above-mentioned lack It falls into.

Utility model content

The purpose of this utility model is to provide a kind of adjustable U-shaped tunnel beam cars excessively of wheelspan, and structure is simple, operation side Just, box beam flange lower room can be made full use of, shipping height is effectively reduced, met the requirement of tunnel.

To solve the above problems, including at least vehicle the utility model discloses a kind of adjustable U-shaped tunnel beam car excessively of wheelspan Body, traveling wheel group and carry beam trolley on the back, it is characterised in that:

The car body includes two curb girders for being located in the middle a central sill and two sides, and the longitudinal gap of the central sill places There are more crossbeams, the outside both ends of the more crossbeams are respectively connected to the lower end of curb girder to form the U-shaped structure of car body；

The traveling wheel group is located at the curb girder lower end of car body and carries out removable connection with the curb girder of car body, the curb girder Lower end is equipped with two kinds of support levels of traveling wheel group to realize the adjusting of wheelspan between two kinds of support levels；

The beam trolley of carrying on the back is located at car body central sill upper rail surface, comprising carrying beam trolley before being removably attached on the back Carry beam trolley on the back with after.

Wherein: each crossbeam includes the beam body for running through central sill and the extension that beam body both ends are respectively connected to by pin and box sub The upper surface of beam, the extending beam is connected to curb girder.

Wherein: the central sill is multi-section type structure, it is each save central sill be bolted respectively connector be connected with each other and Fixed, the curb girder is also multi-section type structure, and connector is bolted respectively and is connected with each other and is fixed for each section curb girder.

Wherein: carrying beam trolley before described on the back is slave mode trolley, includes at least foreground vehicle frame and attachment base, the foreground vehicle frame Rear side end be equipped at intervals with two attachment bases and a bolt device, the bolt device is fixed on car body central sill can be with platform Plug operation is carried out in the middle part of vehicle frame through bogie frame.

Wherein: carrying beam trolley after described on the back is active trolley, includes at least backstage vehicle frame, driving device, chain traction dress It sets and is equipped at intervals with two adjustable connecting-rod devices with adjustable connecting-rod device, the front side end of the backstage vehicle frame to be removably connected to Preceding camel beam trolley, the chain traction device is fixed on the car body, and the roller chain of the chain traction device is connected to driving dress Interior sprocket wheel is set, the driving device and backstage vehicle frame are affixed, thus in the sprocket engagement chain traction device in driving device Roller chain, realize that the opposite car body of box beam with the relatively-stationary backstage vehicle frame of driving device and thereon carries out sliding traveling.

Wherein: the pin and box sub include pin end, female connector and two pin shafts, the top of the inner sidewall of the pin end and Lower part is respectively equipped with multiple spaced otic placodes, and each otic placode is equipped with through-hole, and the upper and lower part of the female connector is set respectively There is the pin hole of multiple grooves for otic placode insertion and each groove of perforation, two pin shaft respectively penetrates and extract the logical of pin end The pin hole of hole and female connector is to carry out the connection of pin end and female connector.

By above structure it is found that the adjustable U-shaped tunnel beam car of crossing of the wheelspan of the utility model has the effect that

1, the structure of car body is designed to a kind of U-shaped structure, longitudinally two curb girders in upper outside are located in travelling wheel group car body Side, an intermediate central sill are connected by eight crossbeams with curb girder, are formed three vertical eight horizontal structures, are carried beam trolley on the back and walk on central sill Row, is eventually transferred in wheel group in load by crossbeam, curb girder, this structure type utilizes empty below box beam flange to the full extent Between, shipping height is reduced, the transport needs of large span large-tonnage box beam are able to satisfy, being especially able to achieve tunnel transport box beam needs It wants.

2, beam trolley being carried on the back equipped with 2, carrying the use of beam trolley on the back, front chassis is that slave mode plank frame slides traveling, rear chassis Traveling is slided under chain driving traction for active plank frame；On the one hand having abandoned previous wheel track walks line mode complexity knot Structure reduces trolley height, and another aspect only one trolley is active structure, reduces front chassis design difficulty, increases foreground Vehicle is gone ahead line range, and longitudinal stability when trolley before Bridge Erector takes beam is improved.

3, for convenience of transporting, the connection of car body longitudinal direction segment is bolted using removable, and car body crossbeam is used using public Lower bearing pin connects on female connector.This hybrid segment joint form realizes that car body segmented can transport, and segment connection safety can It leans on, juxtaposition is convenient for disassembly and assembly.

4, beam car travelling wheel group and steering system are respectively equipped with two positions, laterally adjustable.The box beam of different speed per hours is kept off To open shelves different for side within the walls for slag.When packing speed per hour 350km box beam, wheel group using wide formula support, between slag blocking wall and beam car between Gap is 500mm；When packing speed per hour 250km box beam, wheel group is supported using narrow formula, and gap is between slag blocking wall and beam car 400mm.Under the premise of improving beam car load situation, beam car is effectively ensured and slag blocking wall gap is reasonable, improves beam car Transport beam passability.Therefore the beam car is mounted on different installation sites according to the case where project box beam when project management department installs, The adaptation range for extending beam car improves beam car convenience.

5, carry on the back beam trolley can on beam car from traveling, be also able to cooperate Bridge Erector trolley hanging beam draw feeding beam, one Aspect effectively solves the problems, such as that beam car tire carries, and the position on the other hand meeting Bridge Erector trolley lifting box beam suspension centre is wanted It asks, reduces Bridge Erector supporting leg load, improve Bridge Erector longitudinal stability.

The detailed content of the utility model can be obtained by aftermentioned explanation and institute's attached drawing.

Detailed description of the invention

Fig. 1 shows the adjustable U-shaped main view for crossing tunnel beam car of the wheelspan of the utility model.

Fig. 2 shows the top view of the utility model.

Fig. 3 shows the tunnel cross-section diagram excessively of the utility model.

Fig. 4 shows the structural front view of the utility model car body and hydraulic leg.

Fig. 5 shows the structure top view of the utility model car body and hydraulic leg.

Fig. 6 shows the A-A cross-sectional view of the utility model car body and hydraulic leg.

Fig. 7 shows the structural schematic diagram for carrying beam trolley before the utility model on the back.

Fig. 8 shows the structural schematic diagram for carrying beam trolley after the utility model on the back.

Fig. 8 A shows the structural schematic diagram of adjustable connecting-rod device in the utility model.

Fig. 8 B shows the schematic diagram of chain traction device in the utility model.

Fig. 9 shows the structural schematic diagram of the utility model pin and box sub.

Fig. 9 A shows the structural schematic diagram of simple plug-in and pull-out device in the utility model.

Figure 10 A to Figure 10 F shows the step schematic diagram of the feeding beam method of the utility model beam car.

Appended drawing reference: 1. car bodies, 2. traveling wheel groups, 3. steering systems, 4. carry on the back beam trolley, 1-1. central sill, 1-2. curb girder, 1-3. crossbeam, 1-4. pin and box sub, 1-4-1 pin end, 1-4-2 female connector, 1-4-3 pin shaft, the simple plug-in and pull-out device of 1-4-4,4-1. Before carry beam trolley, 4-1-1. bogie frame, 4-1-2 attachment base, 4-1-3 rubber slab, the anti-bias block of 4-1-4,4-1-5 slide plate, 4- on the back Carry beam trolley, 4-2-1. bogie frame, 4-2-2. driving device, 4-2-3. chain traction device, 4- after 1-6 bolt device, 4-2. on the back 2-4. adjustable connecting-rod device.

Specific embodiment

Referring to Fig. 1 to Fig. 9, it is shown that the adjustable U-shaped tunnel beam car excessively of the wheelspan of the utility model.

Referring to 10A to Figure 10 E, it is shown that the step schematic diagram of the feeding beam method of the beam car of the utility model.

The adjustable U-shaped tunnel beam car of crossing of wheelspan includes at least car body 1, traveling wheel group 2, steering system 3 and carries Liang Tai on the back Vehicle 4.Wherein, referring to fig. 4-6, the car body 1 is U-shaped structure, and the traveling wheel group 2 and steering system 3 are located under car body, with vehicle Body forms removable connection, can also be equipped with multiple hydraulic legs under the car body, the beam trolley 4 of carrying on the back is located on car body 1.

Referring to Fig. 3, it is shown that the wheelspan of the utility model is adjustable U-shaped to be crossed tunnel beam car and cross tunnel end face packing box beam Figure, box beam by the U-shaped car body of the utility model, preferably can be placed and be transported.

Referring to fig. 4 to Fig. 6, the car body 1 includes two curb girder 1-2 for being located in the middle a central sill 1-1 and two sides, institute Longitudinal direction (i.e. left and right directions in the attached drawing 4-5) equidistant interval for stating central sill 1-1 has placed more crossbeam 1-3, it is preferred that more Root crossbeam 1-3 includes that two end floor beams and equidistant interval positioned at the both ends central sill 1-1 are set to the six roots of sensation crossbeam between two end floor beams The outside both ends of 1-3, the more crossbeam 1-3 are respectively connected to the lower end of curb girder 1-2, so that the U-shaped structure of car body 1 is formed, And this structure ensure that integral strength and bearing capacity, moreover it is possible to preferably adapt to the concrete application in engineering.

Referring to Fig. 6, each crossbeam 1-3 includes to run through the beam body of central sill 1-1 and be respectively connected to beam by pin and box sub 1-4 The extending beam at body both ends, the upper surface of the extending beam are connected to curb girder 1-2, and the central sill 1-1 can be multi-section type structure, each to save Connector is bolted respectively and is connected with each other and is fixed for central sill, and the curb girder 1-2 can also be multi-section type structure, respectively saves side Connector is bolted respectively and is connected with each other and is fixed for beam.

Optionally, the traveling wheel group and steering system are located at the curb girder lower end of car body, carry out with car body curb girder removable Load connects, and the lower end of the curb girder 1-2 is equipped with the C and D two of A and B two kinds of support levels and corresponding steering system of traveling wheel group Kind installation position, wherein all there are two installation positions, i.e. travelling wheel group and steering system for travelling wheel group and steering system on same axis System can be separately mounted to A support level and the installation position C (referred to as wide formula support), can also be separately mounted to B support level and the installation position D (referred to as narrow formula support), the B support level is located at the inside of A support level, and the installation position D is located at the inside of the installation position C.

The multiple hydraulic leg is set under the crossbeam of car body, with formed before in after hydraulic leg support, more preferably Be set under the extending beam of the crossbeam, the beam trolley of carrying on the back is located on the central sill of car body.

Referring to fig. 2, the beam trolley 4 of carrying on the back is located at car body central sill upper rail surface, includes what is be removably attached Before carry on the back beam trolley 4-1 and after carry beam trolley 4-2 on the back, carried on the back before described beam trolley 4-1 and after carry beam trolley 4-2 traveling on central sill 1-1 on the back.

Referring to Fig. 7, it is shown that it carries one embodiment of beam trolley 4-1 before the utility model on the back, can be slave mode trolley, Include foreground vehicle frame 4-1-1, attachment base 4-1-2, rubber slab 4-1-3, anti-bias block 4-1-4 and slide plate 4-1-5, the front chassis The rear side end of frame 4-1-1 is equipped at intervals with two attachment base 4-1-2, and the both ends the foreground vehicle frame 4-1-1 upper surface can be respectively equipped with At least one rubber slab 4-1-3, to adjust hunchbacked depth of beam, the foreground vehicle frame 4-1-1 two by the quantity of rubber slab 4-1-3 End lower surface can be respectively equipped with slide plate 4-1-5, to be additionally provided on the outside of the enterprising walking row of central sill 1-1, each slide plate 4-1-5 At least one anti-bias block 4-1-4 carries out anti-bias traveling and a bolt device 4-1-6 to can guarantee on central sill 1-1, The bolt device, which is fixed on car body central sill, to run through bogie frame with plug operation is carried out in the middle part of bogie frame.

Referring to Fig. 8 and Fig. 8 B, it is shown that carry one embodiment of beam trolley 4-2 after the utility model on the back, it can be for actively Formula trolley, include backstage vehicle frame 4-2-1, driving device 4-2-2, chain traction device 4-2-3 and adjustable connecting-rod device 4-2-4, The front side end of the backstage vehicle frame 4-2-1 is equipped at intervals with two adjustable connecting-rod devices 4-2-4, the adjustable connecting-rod device 4-2-4 It is removable connection with backstage vehicle frame 4-2-1, the chain traction device 4-2-3 is fixed on the car body, the chain traction dress The roller chain for setting 4-2-3 is connected to sprocket wheel (not shown) in driving device 4-2-2, the driving device 4-2-2 and rear chassis Frame 4-2-1 is affixed, the sprocket engagement chain traction device 4-2-3 under driving device 4-2-2 driving, in driving device 4-2-2 In roller chain, since chain traction device itself is fixed with respect to car body, and driving dress is realized in the movement of sprocket wheel opposing rollers chain Set the movement of 4-2-2 opposing chain traction device, so realize with the relatively-stationary backstage vehicle frame 4-2-1 of driving device and its On box beam carry out sliding traveling with respect to car body.

Wherein, the backstage vehicle frame 4-2-1 is again provided with the rubber slab similar on the vehicle frame 4-1-1 of foreground, anti-bias block And slide plate, equally to realize height-adjustable hunchbacked beam and slide.

Referring to Fig. 8 A, the adjustable connecting-rod device 4-2-4 includes attachment base 4-2-4-1, threaded rod 4-2-4-2 and thread bush The rear end of 4-2-4-3, the attachment base 4-2-4-1 are equipped with the lug for being detachably connected to backstage vehicle frame 4-2-1, and front end is equipped with two Spaced mounting plate, the rear end of the threaded rod 4-2-4-2 is rotatable to be articulated between two mounting plates, the thread bush 4-2-4-3 screw-casing is together in the threaded rod 4-2-4-2, to be come real by screwing between threaded rod and thread bush relatively The telescopic adjustment of existing adjustable connecting-rod device, wherein the front end of the thread bush can be equipped with connection pin shaft.Wherein, beam is carried on the back after described Trolley 4-2 can be carried out removable by the connection pin shaft of adjustable connecting-rod device 4-2-4 with the attachment base 4-1-2 for preceding carrying beam trolley 4-1 on the back Load connects.

The beam trolley of carrying on the back of the utility model uses plank frame as a result, divides former and later two to carry beam trolley on the back, preceding beam trolley of carrying on the back is The driven bogie of unpowered mechanism；After carry beam trolley on the back and driven on fixed chain by driving device, whole slide traveling, front and back two A beam trolley of carrying on the back can carry out dismounting connection.

Referring to Fig. 9, the pin and box sub 1-4 is more otic placodes pin shaft connection structure up and down, and it includes pin end 1-4-1, mother Connector 1-4-2 and two pin shaft 1-4-3, the upper and lower part of the inner sidewall of the pin end 1-4-1 are respectively equipped with multiple interval rows The otic placode of column, each otic placode be equipped with through-hole, the upper and lower part of the female connector 1-4-2 be respectively equipped with it is multiple for otic placode insertion The pin hole of groove and each groove of perforation, the two pin shafts 1-4-3 respectively penetrate and extract through-hole and the mother of pin end 1-4-1 The pin hole of connector 1-4-2, to carry out the connection of pin end and female connector.

Referring to Fig. 9 A, the pin and box sub 1-4 also includes simple plug-in and pull-out device 1-4-4, may include threaded rod with holes, screw thread Cylinder, anti-skidding support plate and jack, wherein the thread barrel and threaded rod with holes can carry out threaded engagement movement, the screw thread Cylinder periphery be equipped with anti-skidding support plate, referring to figure it is found that the anti-skidding support plate outside be the hook formation with circular arc, with Laterally partially, one end of the jack supports that in car body pin and box sub, the other side is supported on top when preventing jack from supporting On anti-skidding support plate, one end of the threaded rod with holes is equipped with circular hole, and the other end is equipped with external screw thread, and the external screw thread can be with pin shaft On tapped blind hole carry out removable connection.

The structure of the utility model uses modular as a result, can carry out the fast assembling-disassembling of each component.

As shown in Figure 10 A to Figure 10 F, it is shown that the feeding beam method of the beam car of the utility model, it is main to include following step It is rapid:

Step S101, beam car travel to dress beam position, and front and back carries beam trolley on the back and car body can be solid by bolt device and car body It is fixed, it is propped up under beam car hydraulic leg；

Box beam both ends are slowly placed on the front and back trolley of beam car by step S102, and the hydraulic leg of beam car is packed up, Traveling is packed in preparation；

Step S103, beam car packs box beam and crosses sidewalk, roadbed, bridge and tunnel traveling, and transports beam in place, it is preceding in after liquid It is propped up under pressure supporting leg, carries beam trolley on the back before and after releasing and fixed with car body；Front and back carries beam trolley on the back and packs box beam beam orbit sliding traveling in, Box beam is transported to beam car front end face, and stretches out beam car front end certain distance, the parking of front and back trolley；

Step S104, trolley slings box beam front end before Bridge Erector, carried on the back with after beam trolley synchronize drag beam to continue traveling；

Step S105, after drawing traveling in place, preceding trolley carries beam trolley on the back with after while stopping, and rear trolley is sling Box beam rear end, beam car complete feeding beam operation；

Step S106, after carry beam trolley on the back and connect with beam trolley is before carried on the back, beam position is filled according to next Pin box beam, will preceding carry beam trolley on the back Take to its fill beam position, remove connection, after carry on the back beam trolley continue slide traveling, to its fill beam position stop, it is preceding in after hydraulic branch Leg is packed up, and beam car returns to Liang Chang and fills beam.

As a result, utility model has the advantages that

1, the structure of car body is designed to a kind of U-shaped structure, longitudinally two curb girders in upper outside are located in travelling wheel group car body Side, an intermediate central sill are connected by eight crossbeams with curb girder, are formed three vertical eight horizontal structures, are carried beam trolley on the back and walk on central sill Row, is eventually transferred in wheel group in load by crossbeam, curb girder, this structure type utilizes empty below box beam flange to the full extent Between, shipping height is reduced, the transport needs of large span large-tonnage box beam are able to satisfy, being especially able to achieve tunnel transport box beam needs It wants.

2, beam trolley being carried on the back equipped with 2, carrying the use of beam trolley on the back, front chassis is that slave mode plank frame slides traveling, rear chassis Traveling is slided under chain driving traction for active plank frame；On the one hand having abandoned previous wheel track walks line mode complexity knot Structure reduces trolley height, and another aspect only one trolley is active structure, reduces front chassis design difficulty, increases foreground Vehicle is gone ahead line range, and longitudinal stability when trolley before Bridge Erector takes beam is improved.

3, for convenience of transporting, the connection of car body longitudinal direction segment is bolted using removable, and car body crossbeam is used using public Lower bearing pin connects on female connector.This hybrid segment joint form realizes that car body segmented can transport, and segment connection safety can It leans on, juxtaposition is convenient for disassembly and assembly.

4, beam car travelling wheel group and steering system are respectively equipped with two positions, laterally adjustable.The box beam of different speed per hours is kept off To open shelves different for side within the walls for slag.When packing speed per hour 350km box beam, wheel group using wide formula support, between slag blocking wall and beam car between Gap is 500mm；When packing speed per hour 250km box beam, wheel group is supported using narrow formula, and gap is between slag blocking wall and beam car 400mm.Under the premise of improving beam car load situation, beam car is effectively ensured and slag blocking wall gap is reasonable, improves beam car Transport beam passability.Therefore the beam car is mounted on different installation sites according to the case where project box beam when project management department installs, The adaptation range for extending beam car improves beam car convenience.

5, carry on the back beam trolley can on beam car from traveling, be also able to cooperate Bridge Erector trolley hanging beam draw feeding beam, one Aspect effectively solves the problems, such as that beam car tire carries, and the position on the other hand meeting Bridge Erector trolley lifting box beam suspension centre is wanted It asks, reduces Bridge Erector supporting leg load, improve Bridge Erector longitudinal stability.

It is readily apparent that above description and record is only citing rather than in order to limit the disclosure of the utility model Content, application or use.Although describing and being described in the accompanying drawings embodiment, the utility model in embodiment Do not limit by attached drawing example and be described as in embodiment it is now recognized that optimal mode to implement the religion of the utility model The specific examples led, the scope of the utility model will include any implementation for falling into the description and appended claims of front Example.

Claims (6)

1. a kind of adjustable U-shaped tunnel beam car excessively of wheelspan, including at least car body, traveling wheel group and carries beam trolley on the back, it is characterised in that:

The car body includes two curb girders for being located in the middle a central sill and two sides, and the longitudinal gap of the central sill has placed more Root crossbeam, the outside both ends of the more crossbeams are respectively connected to the lower end of curb girder to form the U-shaped structure of car body；

The traveling wheel group is located at the curb girder lower end of car body and carries out removable connection, the lower end of the curb girder with the curb girder of car body Two kinds of support levels equipped with traveling wheel group are with the adjusting of the realization wheelspan between two kinds of support levels；

The beam trolley of carrying on the back is located at car body central sill upper rail surface, comprising carrying beam trolley before being removably attached on the back with after Carry beam trolley on the back.

2. the adjustable U-shaped tunnel beam car excessively of wheelspan as described in claim 1, it is characterised in that: each crossbeam includes to run through central sill Beam body and the extending beam at beam body both ends is respectively connected to by pin and box sub, the upper surface of the extending beam is connected to side Beam.

3. the adjustable U-shaped tunnel beam car excessively of wheelspan as described in claim 1, it is characterised in that: the central sill is multi-section type knot Connector is bolted respectively and is connected with each other and is fixed for structure, each section central sill, and the curb girder is also multi-section type structure, each to save Connector is bolted respectively and is connected with each other and is fixed for curb girder.

4. wheelspan as described in claim 1 is adjustable U-shaped to cross tunnel beam car, it is characterised in that: carried on the back before described beam trolley be from Dynamic formula trolley includes at least foreground vehicle frame and attachment base, and the rear side end of the foreground vehicle frame is equipped at intervals with two attachment bases, and One bolt device, the bolt device, which is fixed on car body central sill, to run through bogie frame with plug operation is carried out in the middle part of bogie frame.

5. the adjustable U-shaped tunnel beam car excessively of wheelspan as described in claim 1, it is characterised in that: carried on the back after described based on beam trolley Dynamic formula trolley includes at least backstage vehicle frame, driving device, chain traction device and adjustable connecting-rod device, the backstage vehicle frame Front side end is equipped at intervals with two adjustable connecting-rod devices to be removably connected to preceding hunchbacked beam trolley, and the chain traction device is fixed On the car body, the roller chain of the chain traction device is connected to the sprocket wheel in driving device, the driving device and rear chassis Frame is affixed, so that the roller chain in the sprocket engagement chain traction device in driving device, is realized relatively fixed with driving device Backstage vehicle frame and box beam thereon carry out sliding traveling with respect to car body.

6. the adjustable U-shaped tunnel beam car excessively of wheelspan as claimed in claim 2, it is characterised in that: the pin and box sub includes public affairs Connector, female connector and two pin shafts, the upper and lower part of the inner sidewall of the pin end are respectively equipped with multiple spaced otic placodes, Each otic placode is equipped with through-hole, and the upper and lower part of the female connector is respectively equipped with multiple grooves for otic placode insertion and perforation is each The pin hole of groove, two pin shaft respectively penetrate and extract pin end through-hole and female connector pin hole to carry out pin end and The connection of female connector.