CN105108420B

CN105108420B - Frame welding clamp used for cub-type motorcycle sample

Info

Publication number: CN105108420B
Application number: CN201510625428.XA
Authority: CN
Inventors: 王亚军; 彭天; 彭天一
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2015-09-28
Filing date: 2015-09-28
Publication date: 2017-04-12
Anticipated expiration: 2035-09-28
Also published as: CN105108420A

Abstract

The invention discloses a frame welding clamp used for a cub-type motorcycle sample. The frame welding clamp is characterized by comprising a three-dimensional installing platform, a frame front half body positioning clamp structure, a rear beam tube front positioning welding clamp structure, a rear beam tube rear positioning welding clamp structure and a rear beam tube tail positioning welding clamp structure, wherein multiple installing holes are arrayed at a fixed distance in the upper surface and periphery side surface of the three-dimensional installing platform, and the frame front half body positioning clamp structure, the rear beam tube front positioning welding clamp structure, the rear beam tube rear positioning welding clamp structure and the rear beam tube tail positioning welding clamp structure are arranged on the three-dimensional installing platform. The welding assembly process can be simplified, and the frame welding clamp has the advantages of being easy to operate, low in cost, capable of facilitating trial-manufacture adjustment of the cub-type motorcycle sample and the like.

Description

Beam bending bicycle sample welding clamp of vehicle frame

Technical field

The present invention relates to frame of motorcycle manufacture field, in particular to a kind of beam bending bicycle sample welding clamp of vehicle frame.

Background technology

Bent-beam motorcycle refers to that the motorcycle girder in front of seat cushion is bent under right forward-backward algorithm with the shape in front of seat cushion Into the motor cycle type in a downward space.Bent-beam motorcycle is present modal motorcycle, and it holds in motorcycle family Long property with it is simple to operation the features such as firmly get liking for consumer.Bent-beam motorcycle as a economical and practical vehicle, into For all suitable popular car of various consumption stratas.Simultaneously motorcycle generally requires first R ＆ D design and goes out sample in R＆D process Product, carries out testing inspection, to ensure the dependable with function of final finished.

In the trendy bent-beam motorcycle of a model LF110, its body frame structure for automotive includes being located at anterior vehicle frame first half Body structure and the back rest tubular construction positioned at rear portion, the vehicle frame proterosoma structure mainly includes being located at the standpipe of front end, after standpipe To the main-beam pipe of back lower place bending, main-beam pipe rear end is also fixedly welded with an electromotor and hangs installation lateral rear connection entirety Plate, electromotor hangs the symmetrical cover type structure of installing plate and upper end covers and is overlapped on main-beam pipe rear end and welds solid Fixed, electromotor suspension installing plate middle part left and right extends transversely through and a bottom fork axis is fixedly installed；Back rest tubular construction mainly includes two Rear upper beam pipe and two rear lower beam pipes being set up in parallel that left and right is set up in parallel, rear upper beam pipe front end overlap joint is weldingly fixed on girder Pipe postmedian, the oblique back upper place in rear end is obliquely installed, and rear lower beam pipe front end overlap joint is weldingly fixed on electromotor and hangs on installing plate, Laminating after rear end extends obliquely is weldingly fixed on lower surface after rear upper beam pipe；Plus man-hour, in addition it is also necessary to consider on after two Forward position is welded and fixed successively from front to back inverted U-shaped fuel tank fore-stock and a cushion rack between beam pipe；Two Afterwards upper beam pipe rear positions also need install after elastic axis, rear elastic axis extend transversely through be fixed on raise up be connected to two after on After two of beam pipe rear upper surface on elastic axis journal stirrup, after elastic axis journal stirrup upper end also extends transversely through and is fixed with one after two Expose rear elastic axis journal stirrup and be each welded and fixed forward in elastic axis journal stirrup web beam, rear elastic axis journal stirrup web beam two ends There is a fuel tank after-poppet, and be successively welded with a car body covering journal stirrup；Upper beam pipe tail end is also welded upwards after two Connect and be fixed with seat cushion lock support of the entirety in inverted U-shaped frame structure, seat cushion lock support is each side welded and fixed one Hood journal stirrup.

The frame of curved beam motorcycle of said structure, when motorcycle research and development sample is produced, typically completes vehicle frame proterosoma structure Processing after, back rest tubular construction is first completed one by one, and thereon each adnexa is individually welded and fixed, and finally again integral solder is integrated shape Into vehicle frame.So, there is operation various, complex operation, the defect of high cost.Especially because sample production usually need it is right The little structure such as the Accessory Members of some local is adjusted, and so, adjustment every time is realized using the weld jig of fixed structure Welding, greatly increases cost, constrains the expansion of sample research and development.

The content of the invention

For above-mentioned the deficiencies in the prior art, the technical problem to be solved is：How to provide one kind being capable of letter Chemical industry sequence so as to simple to operate, it is with low cost, and can further facilitate the beam bending bicycle sample of trial-production adjustment to be welded with vehicle frame Welding fixture.

In order to solve above-mentioned technical problem, following technical scheme is present invention employs：When described in scheme, with its installation State after on the vehicle frame describes benchmark for orientation.

A kind of beam bending bicycle sample welding clamp of vehicle frame, it is characterised in that the weld jig includes upper surface and the week side of boss Surface is disposed with the three-dimensional mounting platform of some installing holes according to constant spacing array, and is arranged on three-dimensional mounting platform Vehicle frame proterosoma positioning fixture structure, back rest pipe front portion positioning welding clamp structure, back rest pipe rear portion positioning welding fixture knot Structure and back rest pipe afterbody positioning welding clamp structure；The vehicle frame proterosoma positioning fixture structure is used to realize to vehicle frame proterosoma Positioning；The back rest pipe front portion positioning welding clamp structure is used to realize anterior to rear lower beam pipe, rear upper beam pipe front portion, fuel tank The positioning of fore-stock and cushion rack；The back rest pipe rear portion positioning welding clamp structure be used for realize to rear lower beam pipe rear portion, The positioning of elastic axis journal stirrup, rear elastic axis, fuel tank after-poppet and car body covering journal stirrup afterwards；The back rest pipe afterbody positioning welding Clamp structure is used to realize the positioning to rear upper beam pipe rear portion, seat cushion lock support and hood journal stirrup.

So, the weld jig of such scheme, can realize to vehicle frame proterosoma, back rest tubular construction and back rest pipe simultaneously Set and Positioning in structure between each Accessory Members so as to after positioning can directly using welding gun disposably realize to each component it Between be welded and fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.

Used as optimization, the vehicle frame proterosoma positioning fixture structure includes standpipe positioning component and bottom fork axis positioning component；

The standpipe positioning component includes that the standpipe positioning of the rectangular body structure of entirety uses standard square chest, the standpipe Positioning with each side of standard square chest according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures arrangement There are some installing holes, standpipe positioning standard square chest is by being bolted to three-dimensional mounting platform front Middle face and upwardly extending Arrange, the standpipe positioning component also includes a standpipe positioning standard for being fixed on standpipe positioning standard square chest upper surface Protractor, the standpipe positioning is with standard angle device is including the fixed block each with a hinged end and a folding end and turns The hinged end of motion block, fixed block and moving block is rotatably hinged and is provided with for realizing turning for rotational angle positioning in hinged place Dynamic angle alignment pin, the fixed block with moving block according to three-dimensional mounting platform on the consistent spacing of installing hole and hole Footpath array is disposed with some installing holes, and the fixed block folding end of the standpipe positioning standard angle device is arranged forward and by bolt It is horizontally fixed on standpipe positioning standard square chest upper surface, the standpipe positioning moving block upper surface middle part of standard angle device Standpipe positioning round table, the standpipe positioning round table diameter and the matching of lower riser end external diameter and standpipe setting circle are fixedly installed upwards At platform axle center it is coaxial on be provided with standpipe locating dowel with the matching of standpipe internal diameter, standpipe locating dowel upper end clearance fit has disk Shape for position rear profile tube compress standpipe be fixed block；

The bottom fork axis positioning component includes the bottom fork axis positioning support angle bar of two entirety frame structure in a rectangular trapezoid, On each side of the bottom fork axis positioning support angle bar according to three-dimensional mounting platform on the consistent spacing of installing hole and aperture Array is disposed with some installing holes, and bottom fork axis positioning support angle bar lower end is by being bolted to three-dimensional mounting platform middle part and left and right It is oppositely arranged；Bottom fork axis positioning support angle bar hypotenuse is arranged backward and medial surface is fixedly installed the bottom fork axis positioning for extending forward Block, distance and electromotor hang the width matching of the installing plate left and right sides, two bottom fork axis positioning between two bottom fork axis locating pieces The front upper end of block is provided with bottom fork axis locating slot and for realizing the positioning to bottom fork axis two ends.

So, when using, the angle for first adjusting standpipe positioning standard angle device opens up into required angle, Ran Houzai Standpipe is inserted into into standpipe locating dowel makes its lower end and standpipe positioning round table abut the positioning for supporting and realizing standpipe, then by vertical Pipe is fixed block compression standpipe upper end and realizes being completely fixed standpipe；Then the electromotor at vehicle frame proterosoma rear portion is hung Installing plate is dropped between two bottom fork axis positioning support angle bar, and cause that electromotor hangs that the installing plate left and right sides exposes it is flat Fork shaft end drops into the interior positioning realized to bottom fork axis two ends of bottom fork axis locating slot on bottom fork axis locating piece.So, by three The mode of point location realizes the positioning to vehicle frame proterosoma and clamps with simple structure.The reliability of follow-up welding is ensure that, is made Each component relative-position error reliability and welding operation is convenient and swift, saves cost.Simultaneously as employ standard square chest, Linking is realized between support angle, standard angle device and three-dimensional mounting platform and other non-standard align members and is coordinated, made Obtaining each location structure flexibly and easily can be adjusted as needed installing so as to which being highly suitable for sample trial-production needs to adjust Use during whole each component partial member position, dramatically saves on R＆D costs.Meanwhile, the bottom fork axis positioning support angle bar of setting Follow-up realization to back rest pipe and the installation of the component of adnexa positioning thereon, beneficial to save space and simplification can also be conveniently installed Cost.

Used as optimization, the back rest pipe front portion positioning welding clamp structure includes rear upper beam pipe front portion positioning component, fuel tank Fore-stock positioning component, cushion rack positioning component and rear lower beam pipe front portion positioning component；

Rear upper beam pipe front portion positioning component includes that the rear upper beam pipe of two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar, on each side of rear upper beam pipe front portion positioning support angle bar according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear upper beam pipe front portion positioning support angle bar lower end is fixed by bolt In the middle part of three-dimensional mounting platform and left and right be oppositely arranged；Afterwards upper beam pipe front portion positioning support angle bar hypotenuse is arranged backward and leading flank Upper beam pipe front portion localization criteria protractor after being fixedly connected with one, the rear upper beam pipe front portion localization criteria protractor includes each From fixed block and moving block with a hinged end and a folding end, the hinged end of fixed block and moving block is rotatably hinged And be provided with for realizing the rotational angle alignment pin that rotational angle is positioned in hinged place, press on the fixed block and moving block According to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, before the rear upper beam pipe The fixed block of portion's localization criteria protractor is vertically arranged and folding end is downward and it is anterior fixed to be horizontally fixed on rear upper beam pipe by bolt Position support angle leading flank；One is laterally fixedly connected with after two between the moving block of upper beam pipe front portion localization criteria protractor Lateral connection block, the anterior positioning of upper beam pipe after upper beam pipe forward position is provided with two after lateral connection block upper surface correspondence two With boss, rear upper beam pipe front portion positioning boss medial surface is provided with to be realized determining for outer downside laminating anterior with rear upper beam pipe The rear upper beam pipe front portion positioning step of position；

It is anterior positioned at upper beam pipe after two that the fuel tank fore-stock positioning component is included in the lateral connection block upper surface Extend between positioning boss and forward the fuel tank fore-stock location division of formation, the fuel tank fore-stock location division upper surface is arranged There is a fuel tank fore-stock positioning boss, fuel tank fore-stock positioning boss upper surface is used for and fuel tank fore-stock middle lower surface patch Close and realize positioning, the installing hole of correspondence fuel tank fore-stock is provided with fuel tank fore-stock positioning on the fuel tank fore-stock positioning boss Hole and fuel tank fore-stock fastening screw and for realizing to the fixation after fuel tank fore-stock positioning；

It is anterior fixed positioned at upper beam pipe after two that the cushion rack positioning component is included in the lateral connection block upper surface Between the boss of the position and cushion rack location division that extends rearwardly to form, cushion rack location division upper surface is provided with two upwards Cushion rack locating dowel, two cushion rack locating dowel upper ends are provided with real in two installing holes on cushion rack for inserting The cushion rack positioning round table for now positioning；

Rear lower beam pipe front portion positioning component includes that the rear lower beam pipe of two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar, on each side of rear lower beam pipe front portion positioning support angle bar according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear lower beam pipe front portion positioning support angle bar lower end is fixed by bolt In three-dimensional mounting platform postmedian and left and right be oppositely arranged；Afterwards lower beam pipe front portion positioning support angle bar hypotenuse is arranged backward and front side Face be fixedly connected with one after lower beam pipe front portion localization criteria protractor, the rear lower beam pipe front portion localization criteria protractor includes Rotatably cut with scissors the hinged end each with the fixed block and moving block at a hinged end and a folding end, fixed block and moving block Connect and be provided with for realizing the rotational angle alignment pin that rotational angle is positioned, on the fixed block and moving block in hinged place According to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, the rear lower beam pipe The fixed block of anterior positioning standard angle device is vertically arranged and folding end is downward and is horizontally fixed on before rear lower beam pipe by bolt Portion's positioning support angle bar leading flank；Laterally it is fixedly connected between the moving block of lower beam pipe front portion positioning standard angle device after two Lower beam pipe front portion positioning contiguous block after having one, rear lower beam pipe anterior positioning lower beam pipe after contiguous block upper surface correspondence two Forward position be provided with two after lower beam pipe front portion positioning boss, be provided with two confessions on the positioning boss of rear lower beam pipe front portion Afterwards lower beam pipe forward position snaps in the rear lower beam pipe front portion locating slot for realizing positioning.

So, when using, first adjusting rear upper beam pipe front portion localization criteria protractor opening angle makes it rotate Block direction It is parallel with rear upper beam pipe, then cause upper beam pipe front end after two fixed with the main-beam pipe postmedian installation site laminating after positioning Position, after upper beam pipe front waist section drops into two after then causing in the positioning step of upper beam pipe front portion, realizes anterior to rear upper beam pipe The positioning of section；Fuel tank fore-stock medium position is fitted on fuel tank fore-stock positioning boss, two ends leg fits to rear upper beam Positioning is realized on pipe in correspondence installation site, then the installing hole and fuel tank fore-stock location hole reality of fuel tank fore-stock are inserted by latch Now to the fixation after fuel tank fore-stock positioning；Again two installing holes on cushion rack are nested into into cushion rack locating dowel upper end Positioning round table on, and cause cushion rack two ends leg to fit on rear upper beam pipe correspondence installation site to realize to cushion rack Positioning；The opening angle of rear lower beam pipe front portion localization criteria protractor is adjusted again so that its moving block and rear lower beam pipe are flat OK, then by rear lower beam pipe front end and positioning after electromotor hang installing plate on correspondence installation site laminating, and cause after under Beam pipe front portion drops into the positioning realized in corresponding rear lower beam pipe front portion locating slot to rear lower beam pipe forward position.So, Realize to back rest pipe front waist section and the positioning of each Accessory Members thereon, disposably can be realized to rear upper beam pipe using welding gun And afterwards between lower beam pipe and vehicle frame proterosoma, and the welding between fuel tank fore-stock and cushion rack and rear upper beam pipe is solid It is fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.Simultaneously as employing supporting Linking is realized between angle bar, standard angle device and three-dimensional mounting platform and other non-standard align members and is coordinated so that be each Location structure flexibly and easily can be adjusted as needed installing so as to which being highly suitable for sample trial-production needs adjustment each Use during component partial member position, dramatically saves on R＆D costs.Meanwhile, the non-standard align member of which part can be same Positioning of the Shi Shixian to multiple components, structure setting is ingenious and ensure that the precision of mutual alignment.

As optimization, the back rest pipe rear portion positioning welding clamp structure include rear lower beam pipe rear portion positioning component, after subtract Shake axle and rear elastic axis journal stirrup positioning component, fuel tank after-poppet positioning component and car body covering journal stirrup positioning component；

The rear lower beam pipe rear portion positioning component includes the rear lower beam pipe rear portion of two entirety frame structure in a rectangular trapezoid Positioning support angle bar, on each side of the rear lower beam pipe rear portion positioning support angle bar according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear lower beam pipe rear portion positioning support angle bar lower end is fixed by bolt In three-dimensional mounting platform postmedian and left and right be oppositely arranged；Afterwards lower beam pipe rear portion positioning support angle bar hypotenuse is arranged backward and inner side Face upper position be fixedly connected with one after lower beam pipe rear portion locating piece, be provided with the rear lower beam pipe rear portion locating piece for The rear lower beam pipe rear portion locating slot of positioning is embedded in for rear lower beam pipe rear portion；

The rear elastic axis and rear elastic axis journal stirrup positioning component be separately fixed at two including two after lower beam pipe rear portion The rear elastic axis locating piece of positioning support angle bar top leading flank, rear elastic axis locating piece front end inwardly front bending extension and Front end upper side be provided with rear elastic axis locating slot for realize to rear elastic axis and the positioning of rear elastic axis journal stirrup；

The car body covering journal stirrup positioning component be separately fixed at two including two after lower beam pipe rear portion positioning support Angle bar top is located at the car body covering journal stirrup locating piece of the medial surface of position on rear elastic axis locating piece, car body covering There is ear locating piece one to extend forward and lower surface is used to be covered for the car body of car body covering journal stirrup lower surface laminating positioning Part journal stirrup location division, the installing hole on car body covering journal stirrup positioning lower surface correspondence car body covering is provided with car body covering Part journal stirrup positioning bolt hole, car body covering journal stirrup positioning bolt hole is used to be screwed in by bolt to be realized to car body covering journal stirrup Positioning and clamping；

The fuel tank after-poppet positioning component includes that two are symmetrically arranged and after the fuel tank of overall L-shaped frame structure Support positioning supports angle bar, two fuel tank after-poppets positioning support on each side of angle bar according to three-dimensional mounting platform on peace The consistent spacing in dress hole and array of apertures are disposed with some installing holes and lower beam pipe rear portion positioning support after being respectively arranged at two Angle bar anterior position；Two fuel tank after-poppet positioning support angle bar medial surface to be respectively fixedly installed a fuel tank after-poppet positioning Block, there is fuel tank after-poppet locating piece one to extend rearwardly and upwardly and lower surface is used for the laminating of oil feeding reservoirs after-poppet upper surface and determines The fuel tank after-poppet location division of position, the installing hole on fuel tank after-poppet positioning lower surface correspondence fuel tank after-poppet is provided with oil Case after-poppet positioning bolt hole, fuel tank after-poppet positioning bolt hole is used to screw in the positioning realized to fuel tank after-poppet by bolt And clamping.

So, when using, first the oriented rear lower beam pipe rear portion in front portion is embedded in the locating slot of rear lower beam pipe rear portion, it is real Now to the positioning of rear lower beam pipe；Rear elastic axis is inserted into after two in the rear damping axis hole of elastic axis journal stirrup, after adjusting again Elastic axis journal stirrup right position and so that correspondence installation on upper beam pipe after rear elastic axis journal stirrup lower end fits on rear elastic axis Position, and elastic axis two ends are dropped in rear elastic axis locating slot after causing, while realizing to rear elastic axis and rear elastic axis The positioning of ear；Then car body covering journal stirrup front underside is fitted to into correspondence installation site, rear end upper table on rear elastic axis The positioning and lock for realizing car body covering journal stirrup is screwed in behind face and the positioning lower surface laminating of car body covering journal stirrup and by bolt Tightly；By correspondence installation site laminating on fuel tank after-poppet rear end and rear elastic axis, and cause to be propped up after its front end upper surface and fuel tank Frame positioning lower surface laminating screws in positioning and the locking of realizing fuel tank after-poppet by bolt again.So, it is achieved that to the back rest Pipe rear section and the thereon positioning of each Accessory Members, can adopt welding gun disposably to realize that the welding to Accessory Members thereon is consolidated It is fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.Simultaneously as employing supporting Linking is realized between angle bar, standard angle device and three-dimensional mounting platform and other non-standard align members and is coordinated so that be each Location structure flexibly and easily can be adjusted as needed installing so as to which being highly suitable for sample trial-production needs adjustment each Use during component partial member position, dramatically saves on R＆D costs.Meanwhile, the non-standard align member of which part can be same Positioning of the Shi Shixian to multiple components, structure setting is ingenious and ensure that the precision of mutual alignment.

Used as optimization, the back rest pipe afterbody positioning welding clamp structure includes rear upper beam pipe rear portion positioning component, seat cushion Lock support positioning component and hood journal stirrup positioning component；

The rear upper beam pipe rear portion positioning component includes that the rear upper beam pipe rear portion positioning of the rectangular body structure of entirety is used Standard square chest, the rear upper beam pipe rear portion positioning with each side of standard square chest according to three-dimensional mounting platform on installing hole Consistent spacing and array of apertures is disposed with some installing holes, and rear upper beam pipe rear portion positioning standard square chest is by being bolted to three Dimension mounting platform rear end medium position, the rear upper beam pipe rear portion positioning component is also secured transverse to after rear upper beam pipe including one Portion's positioning upper beam pipe rear portion locating piece after of standard square chest front side surface upper position, the rear upper beam pipe rear portion positioning Block front upper surface position left and right sides correspondence raises up and is formed with rear upper beam pipe rear portion positioning boss, and rear upper beam pipe rear portion is determined The rear upper beam pipe rear portion locating slot for being embedded in positioning for rear upper beam pipe rear portion is provided with the boss of position；

The cushion lock support positioning component includes being symmetrical set on rear upper beam pipe rear portion positioning standard square chest Two seat cushion lock support locating dowels of end face, seat cushion lock support locating dowel upper end is provided with seat cushion lock support positioning boss and is used for Positioning is realized in two installing holes insertion for seat cushion lock support afterbody；

The hood journal stirrup positioning component includes being symmetrical set in rear upper beam pipe rear portion positioning standard square chest or so Two hood journal stirrup positioning angle bars of side upper end position, hood journal stirrup positioning angle bar integrally L-shaped frame structure and each side It is upper according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, hood journal stirrup Positioning angle bar bottom have one backward extend laterally section and by after bolt fixation before the positioning standard square chest of upper beam pipe rear portion Side, evagination is provided with hood journal stirrup locating piece on hood journal stirrup positioning angle bar medial surface, correspondence hood on hood journal stirrup locating piece The installing hole of journal stirrup is provided with tapped through hole and screws in by bolt realizes the positioning to hood journal stirrup and clamping.

So, when using, the rear portion that front portion has first been completed the rear upper beam pipe of positioning drops into corresponding rear upper beam pipe In the locating slot of rear portion, the positioning to rear upper beam pipe rear portion is realized；Then it is right on rear upper beam pipe cushion lock pedestal lower end to be fitted to The installation site answered, and cause two installing holes of upper end after seat cushion lock support to be nested into determining for seat cushion lock support locating dowel upper end On the boss of position, the positioning to seat cushion lock support is realized；Again two hood journal stirrup the inners are fitted to into the seat cushion lock support after positioning On corresponding installation site, and cause two hood journal stirrup outer ends and hood journal stirrup locating piece laminating, then by bolt screw in hood The tapped through hole on installing hole and hood journal stirrup locating piece on journal stirrup, realizes the positioning to two hood journal stirrups and locks.This Sample, is achieved that to rear upper beam pipe afterbody and the positioning of each Accessory Members thereon, disposably can be realized to it using welding gun Upper Accessory Members are welded and fixed.Make each component relative-position error reliability and welding operation is convenient and swift, save cost.Together When, as a result of realization rank between support angle, standard square chest and three-dimensional mounting platform and other non-standard align members Connect and coordinate so that each location structure flexibly and easily can be adjusted as needed installing so as to be highly suitable for examination Sample trial-production needs to be used when adjusting each component partial member position, dramatically saves on R＆D costs.Meanwhile, which part is nonstandard Quasi- align member can simultaneously realize the positioning to multiple components, and structure setting is ingenious and ensure that the precision of mutual alignment.

In sum, the present invention can simplify assemble welding operation, with low cost with simple to operate, and can be conveniently The advantages of trial-production of beam bending bicycle sample is adjusted.

Description of the drawings

Fig. 1 is the side view of best embodiment of the present invention.

Fig. 2 is the top view of best embodiment of the present invention.

Side view when Fig. 3 is used for best embodiment of the present invention.

Top view when Fig. 4 is used for best embodiment of the present invention.

Specific embodiment

With reference to optimum embodiment and accompanying drawing, the present invention is described in further detail.When described in scheme, with State after it is arranged on vehicle frame describes benchmark for orientation.Vehicle frame described in scheme is model LF110 described in background technology Bent-beam motorcycle frame.

Optimum embodiment：As Figure 1-4, a kind of beam bending bicycle sample welding clamp of vehicle frame, wherein, the weld clip Tool includes upper surface and all side surfaces are disposed with the three-dimensional mounting platform 1 of some installing holes according to constant spacing array, and Vehicle frame proterosoma positioning fixture structure, back rest pipe front portion positioning welding clamp structure, the back rest being arranged on three-dimensional mounting platform 1 Pipe rear portion positioning welding clamp structure and back rest pipe afterbody positioning welding clamp structure；The vehicle frame proterosoma positioning fixture structure For realizing the positioning to vehicle frame proterosoma；Before the back rest pipe front portion positioning welding clamp structure is used to realize to rear lower beam pipe The positioning of portion, anterior rear upper beam pipe, fuel tank fore-stock 2 and cushion rack 3；The back rest pipe rear portion positioning welding clamp structure is used In realization determining to rear lower beam pipe rear portion, rear elastic axis journal stirrup 4, rear elastic axis 5, fuel tank after-poppet 6 and car body covering journal stirrup 7 Position；The back rest pipe afterbody positioning welding clamp structure is used to realize to rear upper beam pipe rear portion, seat cushion lock support 8 and hood journal stirrup 9 positioning.

Wherein, the vehicle frame proterosoma positioning fixture structure includes standpipe positioning component and bottom fork axis positioning component；

The standpipe positioning component includes the standpipe positioning standard square chest 10 of the rectangular body structure of entirety, described vertical Pipe positioning with each side of standard square chest 10 according to three-dimensional mounting platform 1 on the consistent spacing of installing hole and array of apertures Some installing holes are disposed with, standpipe positioning standard square chest 10 is by being bolted to the front Middle face of three-dimensional mounting platform 1 simultaneously Setting is upwardly extended, the standpipe positioning component also includes a standpipe for being fixed on the upper surface of standpipe positioning standard square chest 10 Positioning standard angle device 11, the standpipe positioning standard angle device 11 includes each thering is a hinged end and a folding The hinged end of the fixed block and moving block at end, fixed block and moving block is rotatably hinged and is provided with for realizing turning in hinged place The rotational angle alignment pin of dynamic angle positioning, on the fixed block and moving block according to three-dimensional mounting platform on installing hole Consistent spacing and array of apertures is disposed with some installing holes, and the standpipe positioning uses the fixed block folding end of standard angle device 11 Arrange forward and be horizontally fixed on the upper surface of standpipe positioning standard square chest 10 by bolt, the standpipe positioning uses standard angle device 11 moving block upper surface middle part is fixedly installed upwards standpipe positioning round table 12, the diameter of standpipe positioning round table 12 and standpipe Lower end external diameter matches and is provided with coaxial at standpipe positioning round table axle center the standpipe locating dowel 13 with the matching of standpipe internal diameter, stands The upper end clearance fit of pipe locating dowel 13 has the discoidal standpipe for compressing to positioning rear profile tube to be fixed block 14；It is concrete real Shi Shi, standpipe is fixed that block 14 is screwed at the axle center of standpipe locating dowel top by the threaded post arranged along its axis In individual screwed hole, to realize that standpipe is fixed block to positioning the compression of rear profile tube by way of screwing by screw thread male screw, Simple structure and compress it is convenient to operation.

The bottom fork axis positioning component includes the bottom fork axis positioning support angle bar of two entirety frame structure in a rectangular trapezoid 15, on each side of the bottom fork axis positioning support angle bar 15 according to three-dimensional mounting platform on the consistent spacing of installing hole and Array of apertures is disposed with some installing holes, and the lower end of bottom fork axis positioning support angle bar 15 is by being bolted to three-dimensional mounting platform middle part And left and right is oppositely arranged；The hypotenuse of bottom fork axis positioning support angle bar 15 is arranged backward and medial surface is fixedly installed extend forward flat Fork shaft locating piece 16, distance and electromotor hang installing plate left and right sides width and match between two bottom fork axis locating pieces 16, and two The front upper end of individual bottom fork axis locating piece 16 is provided with bottom fork axis locating slot and for realizing the positioning to bottom fork axis two ends.

Wherein, the back rest pipe front portion positioning welding clamp structure includes being propped up before rear upper beam pipe front portion positioning component, fuel tank Frame positioning component, cushion rack positioning component and rear lower beam pipe front portion positioning component；

Rear upper beam pipe front portion positioning component includes that the rear upper beam pipe of two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar, on each side of rear upper beam pipe front portion positioning support angle bar according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear upper beam pipe front portion positioning support angle bar lower end is fixed by bolt At the middle part of three-dimensional mounting platform 1 and left and right is oppositely arranged（When being embodied as, the rear upper beam pipe front portion positioning support angle bar and front The bottom fork axis positioning support angle bar 15 stated is same component, and with more efficient dexterously utilization space, saving member is simultaneously reduced into This）；Afterwards upper beam pipe front portion positioning support angle bar hypotenuse is arranged backward and upper beam pipe is anterior fixed after leading flank is fixedly connected with one Position standard angle device 17, the rear upper beam pipe front portion localization criteria protractor 17 includes each having a hinged end and one is opened The hinged end of the fixed block and moving block, fixed block and moving block that close end is rotatably hinged and is provided with for realizing in hinged place Rotational angle positioning rotational angle alignment pin, on the fixed block and moving block according to three-dimensional mounting platform 1 on peace The consistent spacing in dress hole and array of apertures be disposed with some installing holes, and the rear upper beam pipe front portion localization criteria protractor 17 is consolidated Determine that block is vertically arranged and folding end is horizontally fixed on rear upper beam pipe front portion positioning support angle bar leading flank downwards and by bolt；Two Afterwards a lateral connection block 18 is laterally fixedly connected between the moving block of upper beam pipe front portion localization criteria protractor 17, is laterally connected Connect upper beam pipe front portion positioning boss 19 after upper beam pipe forward position is provided with two after the upper surface of block 18 correspondence two, rear upper beam The anterior medial surface of positioning boss 19 of pipe is provided with the rear upper beam for realizing positioning for outer downside laminating anterior with rear upper beam pipe Pipe front portion positioning step；

It is anterior positioned at upper beam pipe after two that the fuel tank fore-stock positioning component is included in the lateral connection block upper surface Extend between positioning boss 19 and forward the fuel tank fore-stock location division of formation, the fuel tank fore-stock location division upper surface sets A fuel tank fore-stock positioning boss 20 is equipped with, the upper surface of fuel tank fore-stock positioning boss 20 is used for and subordinate in fuel tank fore-stock Positioning is realized in surface laminating, and the installing hole of correspondence fuel tank fore-stock is provided with before fuel tank on the fuel tank fore-stock positioning boss 20 Rack positioning hole and fuel tank fore-stock fastening screw 21 and for realizing to the fixation after fuel tank fore-stock positioning；

It is anterior fixed positioned at upper beam pipe after two that the cushion rack positioning component is included in the lateral connection block upper surface Between the position boss 19 and cushion rack location division that extends rearwardly to form, cushion rack location division upper surface be provided with two to On cushion rack locating dowel 22, two upper ends of cushion rack locating dowel 22 are provided with for inserting two installations on cushion rack The cushion rack positioning round table of positioning is realized in hole；

Rear lower beam pipe front portion positioning component includes that the rear lower beam pipe of two entirety frame structure in a rectangular trapezoid is anterior Positioning support angle bar 23, on each side of the rear lower beam pipe front portion positioning support angle bar 23 according to three-dimensional mounting platform on The consistent spacing of installing hole and array of apertures are disposed with some installing holes, and spiral shell is leaned in the rear lower end of lower beam pipe front portion positioning support angle bar 23 Bolt is fixed on three-dimensional mounting platform postmedian and left and right is oppositely arranged；The hypotenuse of lower beam pipe front portion positioning support angle bar 23 cloth backward afterwards Put and lower beam pipe front portion localization criteria protractor 24 after leading flank is fixedly connected with, the rear lower beam pipe front portion localization criteria Protractor 24 includes the hinge of each fixed block and moving block with a hinged end and a folding end, fixed block and moving block Connect end to be rotatably hinged and be provided with for realizing the rotational angle alignment pin that rotational angle is positioned, the fixed block in hinged place With on moving block according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, The fixed block of the rear lower beam pipe front portion positioning standard angle device 24 is vertically arranged and folding end is downwards and solid by bolt level It is scheduled on the rear leading flank of lower beam pipe front portion positioning support angle bar 23；The lower beam pipe anterior positioning rotation of standard angle device 24 after two Lower beam pipe front portion positioning contiguous block 25 after being laterally fixedly connected with one between block, the anterior positioning contiguous block 25 of rear lower beam pipe Lower beam pipe front portion positioning boss 26 after lower beam pipe forward position is provided with two after upper surface correspondence two, rear lower beam pipe is anterior The rear lower beam pipe forward position of two confessions is provided with positioning boss 26 and snaps in the rear lower beam pipe front portion locating slot for realizing positioning.

Wherein, the back rest pipe rear portion positioning welding clamp structure includes rear lower beam pipe rear portion positioning component, rear elastic axis And rear elastic axis journal stirrup positioning component, fuel tank after-poppet positioning component and car body covering journal stirrup positioning component；

The rear lower beam pipe rear portion positioning component includes the rear lower beam pipe rear portion of two entirety frame structure in a rectangular trapezoid Positioning support angle bar, on each side of the rear lower beam pipe rear portion positioning support angle bar according to three-dimensional mounting platform on installation The consistent spacing in hole and array of apertures are disposed with some installing holes, and rear lower beam pipe rear portion positioning support angle bar lower end is fixed by bolt In three-dimensional mounting platform postmedian and left and right be oppositely arranged（When being embodied as, the rear lower beam pipe rear portion positioning support angle bar and Aforesaid rear lower beam pipe front portion positioning support angle bar 23 is same component, with more efficient dexterously utilization space, saving member And reduces cost）；Afterwards lower beam pipe rear portion positioning support angle bar hypotenuse is arranged backward and medial surface upper position is fixedly connected with one Individual rear lower beam pipe rear portion locating piece 27, is provided with for embedded for rear lower beam pipe rear portion on the rear lower beam pipe rear portion locating piece 27 The rear lower beam pipe rear portion locating slot of positioning；

The rear elastic axis and rear elastic axis journal stirrup positioning component be separately fixed at two including two after lower beam pipe rear portion The rear elastic axis locating piece 28 of positioning support angle bar top leading flank, the inside front bending extension in the rear front end of elastic axis locating piece 28 And elastic axis locating slot is used to realize to rear elastic axis and the positioning of rear elastic axis journal stirrup after front end upper side is provided with；

The car body covering journal stirrup positioning component be separately fixed at two including two after lower beam pipe rear portion positioning support Angle bar top is located at the car body covering journal stirrup locating piece 29 of the medial surface of position on rear elastic axis locating piece, car body covering There is journal stirrup locating piece 29 one to extend forward and lower surface is used to supply the car body of car body covering journal stirrup lower surface laminating positioning Covering journal stirrup location division, the installing hole on car body covering journal stirrup positioning lower surface correspondence car body covering is provided with car body Covering journal stirrup positioning bolt hole, car body covering journal stirrup positioning bolt hole is used to be screwed in by bolt to be realized to car body covering The positioning of ear and clamping；

The fuel tank after-poppet positioning component includes that two are symmetrically arranged and after the fuel tank of overall L-shaped frame structure Support positioning supports angle bar 30, two fuel tank after-poppets positioning support on each sides of angle bar 30 according to three-dimensional mounting platform on The consistent spacing of installing hole and array of apertures be disposed with some installing holes and lower beam pipe rear portion positioning after being respectively arranged at two Support angle anterior position（When being embodied as, after the fuel tank after-poppet positioning supports the lower surface of angle bar 30 by being bolted to Upper beam pipe front portion positioning support angle bar upper surface, with more efficient dexterously utilization space, saving member and reduces cost）；Two Individual fuel tank after-poppet positioning supports the medial surface of angle bar 30 to be respectively fixedly installed a fuel tank after-poppet locating piece 31, props up after fuel tank There is frame locating piece 31 one to extend rearwardly and upwardly and lower surface is used for after the fuel tank of oil feeding reservoirs after-poppet upper surface laminating positioning Support location division, the installing hole on fuel tank after-poppet positioning lower surface correspondence fuel tank after-poppet is provided with fuel tank after-poppet to be determined Position bolt hole, fuel tank after-poppet positioning bolt hole is used to be screwed in by bolt realizes the positioning to fuel tank after-poppet and clamping.

Wherein, the back rest pipe afterbody positioning welding clamp structure includes rear upper beam pipe rear portion positioning component, cushion lock Frame positioning component and hood journal stirrup positioning component；

The rear upper beam pipe rear portion positioning component includes that the rear upper beam pipe rear portion positioning of the rectangular body structure of entirety is used Standard square chest 32, the rear upper beam pipe rear portion positioning with each side of standard square chest 32 according to three-dimensional mounting platform on peace The consistent spacing in dress hole and array of apertures are disposed with some installing holes, and rear upper beam pipe rear portion positioning is solid by bolt with standard square chest 32 The rear end medium position of three-dimensional mounting platform 1 is scheduled on, after the rear upper beam pipe rear portion positioning component is also secured transverse to including one Upper beam pipe rear portion positioning upper beam pipe rear portion locating piece 33 after of the front side surface upper position of standard square chest 32, it is described after on The front upper surface position left and right sides of beam pipe rear portion locating piece 33 correspondence raises up and is formed with rear upper beam pipe rear portion positioning boss 34, the rear upper beam pipe rear portion for being embedded in positioning for rear upper beam pipe rear portion is provided with rear upper beam pipe rear portion positioning boss 34 and is positioned Groove；

The cushion lock support positioning component includes being symmetrical set on rear upper beam pipe rear portion positioning standard square chest Two seat cushion lock support locating dowels 35 of end face, the upper end of seat cushion lock support locating dowel 35 is provided with seat cushion lock support positioning boss simultaneously For realizing positioning for the insertion of two installing holes of seat cushion lock support afterbody；

The hood journal stirrup positioning component is left in rear upper beam pipe rear portion positioning standard square chest 32 including being symmetrical set Two hood journal stirrup positioning angle bars 36 of right flank upper end position, the overall L-shaped frame structure of hood journal stirrup positioning angle bar 36 and On each side according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, tail The bottom of cover journal stirrup positioning angle bar 36 have one backward extend laterally section and upper beam pipe rear portion positioning is marked after fixing by bolt The front side of quasi- square chest 32, evagination is provided with hood journal stirrup locating piece 37, hood tumour of external auditory meatus on the medial surface of hood journal stirrup positioning angle bar 36 On the block 37 of position the installing hole of correspondence hood journal stirrup be provided with tapped through hole and screw in by bolt realize the positioning to hood journal stirrup with Clamp.

Claims

1. a kind of beam bending bicycle sample welding clamp of vehicle frame, it is characterised in that the weld jig includes upper surface and the week side of boss table Face is disposed with the three-dimensional mounting platform of some installing holes according to constant spacing array, and is arranged on three-dimensional mounting platform Vehicle frame proterosoma positioning fixture structure, back rest pipe front portion positioning welding clamp structure, back rest pipe rear portion positioning welding clamp structure With back rest pipe afterbody positioning welding clamp structure；The vehicle frame proterosoma positioning fixture structure is used to realize to vehicle frame proterosoma Positioning；The back rest pipe front portion positioning welding clamp structure is used to realize before anterior to rear lower beam pipe, rear upper beam pipe front portion, fuel tank The positioning of support and cushion rack；The back rest pipe rear portion positioning welding clamp structure be used for realize to rear lower beam pipe rear portion, after The positioning of elastic axis journal stirrup, rear elastic axis, fuel tank after-poppet and car body covering journal stirrup；The back rest pipe afterbody positioning welding folder Lamps structure is used to realize the positioning to rear upper beam pipe rear portion, seat cushion lock support and hood journal stirrup；

The vehicle frame proterosoma positioning fixture structure includes standpipe positioning component and bottom fork axis positioning component；

The standpipe positioning component includes the standpipe positioning standard square chest of the rectangular body structure of entirety, and the standpipe is positioned If with each side of standard square chest according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with Dry installing hole, standpipe positioning standard square chest sets by being bolted to three-dimensional mounting platform front Middle face and upwardly extending Put, the standpipe positioning component also includes a standpipe positioning standard angle for being fixed on standpipe positioning standard square chest upper surface Degree device, the standpipe positioning standard angle device includes each fixed block and rotation with a hinged end and a folding end The hinged end of block, fixed block and moving block is rotatably hinged and is provided with for realizing the rotation that rotational angle is positioned in hinged place Angle alignment pin, the fixed block with moving block according to three-dimensional mounting platform on the consistent spacing of installing hole and aperture Array is disposed with some installing holes, and the fixed block folding end of the standpipe positioning standard angle device is arranged forward and by bolt water It is flat to be fixed on standpipe positioning standard square chest upper surface, the standpipe positioning with the moving block upper surface middle part of standard angle device to On be fixedly installed standpipe positioning round table, the standpipe positioning round table diameter and the matching of lower riser end external diameter and standpipe positioning round table At axle center it is coaxial on be provided with standpipe locating dowel with the matching of standpipe internal diameter, standpipe locating dowel upper end clearance fit has disc For to position rear profile tube compress standpipe be fixed block；

The bottom fork axis positioning component includes the bottom fork axis positioning support angle bar of two entirety frame structure in a rectangular trapezoid, described On each side of bottom fork axis positioning support angle bar according to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures It is disposed with some installing holes, bottom fork axis positioning support angle bar lower end is by being bolted to three-dimensional mounting platform middle part and left and right is relative Arrange；Bottom fork axis positioning support angle bar hypotenuse is arranged backward and medial surface is fixedly installed the bottom fork axis locating piece for extending forward, Distance and electromotor hang the width matching of the installing plate left and right sides between two bottom fork axis locating pieces, before two bottom fork axis locating pieces Upper end is provided with bottom fork axis locating slot and for realizing the positioning to bottom fork axis two ends.

2. beam bending bicycle sample welding clamp of vehicle frame as claimed in claim 1, it is characterised in that the anterior positioning of the back rest pipe Weld jig structure include rear upper beam pipe front portion positioning component, fuel tank fore-stock positioning component, cushion rack positioning component and after Lower beam pipe front portion positioning component；

Rear upper beam pipe front portion positioning component includes the anterior positioning of rear upper beam pipe of two entirety frame structure in a rectangular trapezoid Support angle, on each side of rear upper beam pipe front portion positioning support angle bar according to three-dimensional mounting platform on installing hole one The spacing and array of apertures of cause is disposed with some installing holes, and rear upper beam pipe front portion positioning support angle bar lower end is by being bolted to three Tie up mounting platform middle part and left and right is oppositely arranged；Afterwards upper beam pipe front portion positioning support angle bar hypotenuse is arranged backward and leading flank is fixed Upper beam pipe front portion localization criteria protractor after being connected with one, the rear upper beam pipe front portion localization criteria protractor includes each tool The hinged end for having the fixed block and moving block at a hinged end and a folding end, fixed block and moving block be rotatably hinged and Hinged place be provided with for realize rotational angle position rotational angle alignment pin, on the fixed block and moving block according to The consistent spacing of installing hole on three-dimensional mounting platform and array of apertures are disposed with some installing holes, and the rear upper beam pipe is anterior fixed The fixed block of position standard angle device is vertically arranged and folding end is horizontally fixed on the anterior positioning of rear upper beam pipe downwards and by bolt Hold angle bar leading flank；One is laterally fixedly connected with after two laterally between the moving block of upper beam pipe front portion localization criteria protractor Contiguous block, the anterior positioning of upper beam pipe is with convex after upper beam pipe forward position is provided with two after lateral connection block upper surface correspondence two Platform, rear upper beam pipe front portion positioning boss medial surface is provided with realizes positioning for outer downside laminating anterior with rear upper beam pipe Afterwards upper beam pipe front portion positioning step；

The fuel tank fore-stock positioning component is included in the lateral connection block upper surface positioned at the anterior positioning of upper beam pipe after two With the fuel tank fore-stock location division of formation is extended between boss and forward, the fuel tank fore-stock location division upper surface is provided with one Individual fuel tank fore-stock positioning boss, fuel tank fore-stock positioning boss upper surface is used for and the laminating of fuel tank fore-stock middle lower surface is real Now position, on the fuel tank fore-stock positioning boss installing hole of correspondence fuel tank fore-stock be provided with fuel tank fore-stock location hole and Fuel tank fore-stock fastening screw simultaneously is used to realize the fixation to after fuel tank fore-stock positioning；

The cushion rack positioning component is included in the lateral connection block upper surface and uses positioned at the anterior positioning of upper beam pipe after two Between the boss and cushion rack location division that extends rearwardly to form, cushion rack location division upper surface is provided with two seats upwards Pad support locating dowel, two cushion rack locating dowel upper ends are provided with realize in two installing holes on cushion rack fixed for inserting The cushion rack positioning round table of position；

Rear lower beam pipe front portion positioning component includes the anterior positioning of rear lower beam pipe of two entirety frame structure in a rectangular trapezoid Support angle, on each side of rear lower beam pipe front portion positioning support angle bar according to three-dimensional mounting platform on installing hole one The spacing and array of apertures of cause is disposed with some installing holes, and rear lower beam pipe front portion positioning support angle bar lower end is by being bolted to three Tie up mounting platform postmedian and left and right is oppositely arranged；Afterwards lower beam pipe front portion positioning support angle bar hypotenuse is arranged backward and leading flank is solid Surely lower beam pipe front portion localization criteria protractor after being connected with, the rear lower beam pipe front portion localization criteria protractor includes respective The hinged end of fixed block and moving block with a hinged end and a folding end, fixed block and moving block be rotatably hinged and Hinged place be provided with for realize rotational angle position rotational angle alignment pin, on the fixed block and moving block according to The spacing and array of apertures consistent with the installing hole on three-dimensional mounting platform is disposed with some installing holes, and the rear lower beam pipe is anterior The fixed block of positioning standard angle device is vertically arranged and folding end is downward and it is anterior fixed to be horizontally fixed on rear lower beam pipe by bolt Position support angle leading flank；One is laterally fixedly connected with after two between the moving block of lower beam pipe front portion positioning standard angle device Individual rear lower beam pipe front portion positioning contiguous block, the anterior positioning of rear lower beam pipe uses lower beam pipe after contiguous block upper surface correspondence two anterior Position be provided with two after lower beam pipe front portion positioning boss, be provided with the positioning boss of rear lower beam pipe front portion two confessions it is rear under Beam pipe forward position snaps in the rear lower beam pipe front portion locating slot for realizing positioning.

3. beam bending bicycle sample welding clamp of vehicle frame as claimed in claim 1, it is characterised in that the back rest pipe rear portion positioning Weld jig structure includes being propped up after rear lower beam pipe rear portion positioning component, rear elastic axis and rear elastic axis journal stirrup positioning component, fuel tank Frame positioning component and car body covering journal stirrup positioning component；

The rear lower beam pipe rear portion positioning component includes the rear lower beam pipe rear portion positioning of two entirety frame structure in a rectangular trapezoid Support angle, on each side of the rear lower beam pipe rear portion positioning support angle bar according to three-dimensional mounting platform on installing hole one The spacing and array of apertures of cause is disposed with some installing holes, and rear lower beam pipe rear portion positioning support angle bar lower end is by being bolted to three Tie up mounting platform postmedian and left and right is oppositely arranged；Afterwards lower beam pipe rear portion positioning support angle bar hypotenuse is arranged backward and on medial surface Portion position be fixedly connected with one after lower beam pipe rear portion locating piece, be provided with for after confession on the rear lower beam pipe rear portion locating piece Lower beam pipe rear portion is embedded in the rear lower beam pipe rear portion locating slot of positioning；

Lower beam pipe rear portion positions after the rear elastic axis and rear elastic axis journal stirrup positioning component are separately fixed at two including two The rear elastic axis locating piece of support angle top leading flank, the inside front bending extension and in front end in rear elastic axis locating piece front end Upper side be provided with rear elastic axis locating slot for realize to rear elastic axis and the positioning of rear elastic axis journal stirrup；

The car body covering journal stirrup positioning component be separately fixed at two including two after lower beam pipe rear portion positioning support angle bar Top is located at the car body covering journal stirrup locating piece of the medial surface of position on rear elastic axis locating piece, car body covering tumour of external auditory meatus There is position block a car body covering that forward extension and lower surface are used to supply car body covering journal stirrup lower surface to fit positioning to prop up Ear location division, the installing hole on car body covering journal stirrup positioning lower surface correspondence car body covering is provided with car body covering Ear positioning bolt hole, car body covering journal stirrup positioning bolt hole is used to screw in the positioning realized to car body covering journal stirrup by bolt And clamping；

The fuel tank after-poppet positioning component include two be symmetrically arranged and overall L-shaped frame structure fuel tank after-poppet Positioning supports angle bar, two fuel tank after-poppets positioning support on each side of angle bar according to three-dimensional mounting platform on installing hole Consistent spacing and array of apertures is disposed with some installing holes and lower beam pipe rear portion positioning support angle bar after being respectively arranged at two Anterior position；Two fuel tank after-poppet positioning support angle bar medial surface to be respectively fixedly installed a fuel tank after-poppet locating piece, oil There is case after-poppet locating piece one to extend rearwardly and upwardly and lower surface is used for the oil that the laminating of oil feeding reservoirs after-poppet upper surface is positioned Case after-poppet location division, the installing hole on fuel tank after-poppet positioning lower surface correspondence fuel tank after-poppet is provided with after fuel tank and props up Frame positioning bolt hole, fuel tank after-poppet positioning bolt hole is used to be screwed in by bolt realizes the positioning to fuel tank after-poppet and clamping.

4. beam bending bicycle sample welding clamp of vehicle frame as claimed in claim 1, it is characterised in that the back rest pipe afterbody positioning Weld jig structure includes rear upper beam pipe rear portion positioning component, cushion lock support positioning component and hood journal stirrup positioning component；

The rear upper beam pipe rear portion positioning component includes the rear upper beam pipe rear portion positioning standard of the rectangular body structure of entirety Square chest, the rear upper beam pipe rear portion positioning with each side of standard square chest according to consistent with the installing hole on three-dimensional mounting platform Spacing and array of apertures be disposed with some installing holes, rear upper beam pipe rear portion positioning standard square chest is by being bolted to three-dimensional peace Assembling platform rear end medium position, the rear upper beam pipe rear portion positioning component is also secured transverse to rear upper beam pipe rear portion including one to be determined Position upper beam pipe rear portion locating piece after of standard square chest front side surface upper position, before the rear upper beam pipe rear portion locating piece Portion upper surface location left and right sides correspondence raises up and is formed with rear upper beam pipe rear portion positioning boss, rear upper beam pipe rear portion convex The rear upper beam pipe rear portion locating slot for being embedded in positioning for rear upper beam pipe rear portion is provided with platform；

The cushion lock support positioning component includes being symmetrical set in rear upper beam pipe rear portion positioning standard square chest upper surface Two seat cushion lock support locating dowels, seat cushion lock support locating dowel upper end is provided with seat cushion lock support positioning boss and for abutment Positioning is realized in two installing holes insertion of pad lock support afterbody；

The hood journal stirrup positioning component includes being symmetrical set in rear upper beam pipe rear portion positioning standard square chest left and right side Two hood journal stirrup positioning angle bars of upper end position, hood journal stirrup positioning angle bar integrally on L-shaped frame structure and each side According to three-dimensional mounting platform on the consistent spacing of installing hole and array of apertures be disposed with some installing holes, hood journal stirrup positioning Angle bar bottom have one backward extend laterally section and after fixing by bolt on front side of upper beam pipe rear portion positioning standard square chest, tail Evagination is provided with hood journal stirrup locating piece on cover journal stirrup positioning angle bar medial surface, correspondence hood journal stirrup on hood journal stirrup locating piece Installing hole is provided with tapped through hole and screws in by bolt realizes the positioning to hood journal stirrup and clamping.