CN105328380A

CN105328380A - Method for machining frame middle segment structure of motorcycle sample

Info

Publication number: CN105328380A
Application number: CN201510754737.7A
Authority: CN
Inventors: 王亚军; 彭天一
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2015-11-09
Filing date: 2015-11-09
Publication date: 2016-02-17
Anticipated expiration: 2035-11-09
Also published as: CN105328380B

Abstract

The invention discloses a method for machining a frame middle segment structure of a motorcycle sample. The method comprises the steps that a welding clamp is firstly adopted for locating an engine suspension mounting rack, an engine rear upper suspension shaft, an engine rear lower suspension shaft, a flat fork shaft, a sided cover lock supporting lug, a storage battery supporting lug, a front reinforcement block, an upper pipe front segment, a lower pipe front segment and a side cover lower supporting lug; then a welding gun is adopted for completing welding and fixing of the components at a time, after welding is completed, a compressing mechanism of the upper pipe front segment is horizontally rotated outward to avoid interference, then an air filter supporting lug locating plate used for achieving locating of an air filter support is mounted, the front side face of the air filter support is located through an air filter support locating plate, and then welding and fixing of the air filter support are completed. According to the method, welding and assembling procedures can be simplified, and the method has the beneficial effects that operation is easy, cost is low, and trial-manufacturing and adjusting of the middle segment of the motorcycle sample can be facilitated.

Description

A kind of knight's car sample vehicle frame middle part structure processing method

Technical field

The present invention relates to frame of motorcycle manufacture field, relate to a kind of knight's car sample vehicle frame middle part structure processing method especially.

Background technology

In motorcycle, riding-type motorcycle is as the vehicle of a classics, and have power large, the advantages such as performance of driving over a long distance is good, firmly get liking of consumer.Motorcycle is in R&D process simultaneously, often needs first R & D design to go out sample product, carries out testing inspection, to ensure the dependable with function of final finished.

Be in the trendy riding-type motorcycle of LF-150-10b in a model, its main body of vehicle frame structure comprises head tube, on rear side of head tube pipe, lower end is fixedly connected with inclined tube before the extension of the back lower place, on rear side of head tube, upper end is fixing connects main-beam pipe front end backward, the main-beam pipe second half section bends downwards along medium position and hangs installing rack at end, rear end connecting engine, on rear side of head tube, medium position is fixedly connected with head tube connecting plate, head tube connecting plate upper end and main-beam pipe underside of forward face are fixed, head tube connecting plate lower end and front inclined tube front portion are fixed, also obliquely between the lower surface of front, bending place in the middle part of upper side medium position and main-beam pipe after described front inclined tube be fixedly connected with a tube connector, in the middle part of described main-beam pipe, both sides, back upper place, bending place are connected with a upper pipe extended back separately, on described engine suspension installing rack both sides rearwardly and upwardly extended have two under pipe, under two, after pipe, upper end is fixedly connected on two upper pipe second half section lower surfaces, and two upper pipe latter ends are oblique extended rearwardly and upwardly side by side.

The trendy riding-type motorcycle frame of complete LF-150-10b, on the basis of above-mentioned main body of vehicle frame structure, also need at head tube upper end installed in front direction limited block, laterally run through in front inclined tube lower end and be fixedly connected with two engine front overhang hanging scrolls, laterally run through in head tube connecting plate centre position and fix a fuel tank installation shaft, also need fixing welding one for the radiator journal stirrup of installation of heat radiator in the left and right sides of front inclined tube first half section, also need respectively to be welded and fixed one for installing the storage battery journal stirrup of storage battery in the left side of main-beam pipe rear section upper end and rear side, main-beam pipe rear section top and two also need between pipe front end be welded and fixed a front boss, lower suspended axle after upper suspended axle and engine after described engine suspension installing rack front side portion upper-lower position also needs laterally to run through respectively and arranges engine, the forward position of engine suspension installing rack right side central also needs to be welded and fixed a side cover lock journal stirrup, also need in the middle part of engine suspension installing rack laterally to run through to arrange bottom fork axis, bottom fork axis and lower pipe front end offset setting, under two, in the middle part of pipe, outside also needs to be welded and fixed a side cover down journal, goes back transverse lap and be fixed with one piece of air filter bracket between two upper pipe forward positions, the lower pipe upper end on the left side is also welded with an electrical part journal stirrup, upper pipe rear portion and lower pipe link position front proximity are also welded with journal stirrup after a side cover downwards, stiffener after being also welded with one piece between lower pipe rear side and upper pipe rear side, described rear stiffener lateral rear is also welded with one piece of cushion lock support downwards, above two upper pipe tail ends, transverse lap is fixed with a fast seat cushion after-poppet, and below upper pipe tail end, transverse weld is fixed with one piece of tail-hood support.

Above-mentioned body frame structure for automotive, when motorcycle research and development sample is produced, normally divides work step to complete each component in main body of vehicle frame successively and being welded and fixed one by one of each Accessory Members on it; Again each component of main body of vehicle frame is welded and fixed successively.Like this, there is operation various, complicated operation, the defect of high cost.Particularly produce due to sample and usually need to adjust some Local Members installation sites and setting angle, each adjustment all adopts the weld jig of fixed structure to realize welding, greatly increases cost, constrains the expansion of sample research and development.Particularly wherein vehicle frame middle part welding processing time, the problems referred to above defect is outstanding especially.

Summary of the invention

For above-mentioned the deficiencies in the prior art, technical problem to be solved by this invention is: how to provide one to simplify operation, make it simple to operate, with low cost, and conveniently can manufacture experimently knight's car sample vehicle frame middle part structure processing method of adjustment further.

In order to solve the problems of the technologies described above, present invention employs following technical scheme: relate to orientation in scheme when describing, install rear state for orientation with it and describing benchmark.

A kind of knight's car sample vehicle frame middle part structure processing method, it is characterized in that, first employing weld jig completes the location to lower suspended axle, bottom fork axis, side cover lock journal stirrup, storage battery journal stirrup, front boss, upper pipe front waist section, lower pipe front waist section and side cover down journal after suspended axle upper after engine suspension installing rack, engine, engine; Adopt that welding gun is disposable completes being welded and fixed of above-mentioned component again, wherein realize comprising to the structure of upper pipe front waist section location the upper pipe front waist section hold-down mechanism compressed for realizing upper pipe front waist section, upper pipe front waist section hold-down mechanism can horizontally rotate arrange and after completing above-mentioned welding, upper pipe front waist section hold-down mechanism is horizontally rotated and outwards avoids interfering, air filter journal stirrup location-plate for realizing air filter bracket location is installed again, realize the location to air filter bracket leading flank by air filter bracket location-plate, then realize being welded and fixed of air filter bracket.

Like this, this method greatly can improve working (machining) efficiency, can also avoid interfering simultaneously, realize quickly and easily welding the clamping of air filter bracket, drastically increase vehicle frame integral solder efficiency.

The weld jig wherein adopted, comprise upper surface and all side surfaces all have some installing holes three-dimensional mounting platform according to constant spacing arranged in arrays, also comprise the storage battery journal stirrup positioning component for realizing storage battery journal stirrup location, the engine rear overhang hanging scroll positioning component that under after suspended axle and engine, suspended axle is located is gone up after realizing engine, for realizing the bottom fork axis positioning component of bottom fork axis location, for realizing the side cover lock journal stirrup positioning component of side cover lock journal stirrup location, for realizing the side cover down journal positioning component of side cover down journal location, for realize front boss location before boss positioning component, for realizing the upper pipe front waist section positioning component of upper pipe front waist section location and the air filter bracket positioning component for realizing air filter journal stirrup location.

Like this, this weld jig structure can realize knight's car sample vehicle frame middle part main body and the location and installation on it between each Accessory Members, can conveniently adopt welding gun to complete being welded and fixed between each component rapidly successively behind location.Make each component relative-position error reliable and welding operation is convenient and swift, provide cost savings.

As optimization, described storage battery journal stirrup positioning component comprises the storage battery journal stirrup location standard square chest of a rectangular body structure of entirety, the each side of standard square chest is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in described storage battery journal stirrup location, and storage battery journal stirrup location standard square chest is by being bolted to position, standard square chest right rear side, engine front overhang hanging scroll location on three-dimensional mounting platform; Storage battery journal stirrup location standard square chest right flank upper position is fixedly connected with one piece of storage battery journal stirrup location-plate by bolt, storage battery journal stirrup location-plate rear portion extends back and upper and lower two ends, rear portion extend to corresponding position, two storage battery journal stirrup installation positions, upper and lower two ends, storage battery journal stirrup location-plate rear portion are laterally run through separately and are provided with a storage battery journal stirrup locating hole and are equipped with storage battery journal stirrup alignment pin in storage battery journal stirrup locating hole, and storage battery journal stirrup alignment pin realizes storage battery journal stirrup location for the earhole inserting storage battery journal stirrup locating hole and corresponding storage battery journal stirrup.

So not only facilitate clamping position, and convenient its adjusts the requirement adjusted to meet sample flexibly.

As optimization, described engine rear overhang hanging scroll positioning component comprises the engine rear overhang hanging scroll location-plate that two pieces of entirety are vertically arranged, two pieces of engine rear overhang hanging scroll location-plate front ends are by being bolted to the left and right sides, standard square chest bottom, storage battery journal stirrup location, engine rear overhang hanging scroll location-plate rear end extends back and both sides are horizontally arranged with engine rear overhang hanging scroll locating hole separately up and down, the engine rear overhang hanging scroll locating hole of two engine rear overhang hanging scroll location-plate rear upper side is horizontally disposed with and locates for inserting for the two ends of suspended axle upper after engine, engine rear overhang hanging scroll locating hole on the downside of two engine rear overhang hanging scroll location-plate rear ends is horizontally disposed with and locates for inserting for the two ends of suspended axle lower after engine.

As optimization, it is vertical leg-of-mutton bottom fork axis location support angle that described bottom fork axis positioning component comprises two entirety, the each side of support angle is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in bottom fork axis location, two bottom fork axis location support angle be symmetrically arranged in respectively standard square chest rear, storage battery journal stirrup location the left and right sides and by being bolted to three-dimensional mounting platform upper surface, described bottom fork axis location support angle leading flank is the installed surface of vertical setting and is provided with the L-shaped bottom fork axis support transition block of an entirety in leading flank lower end, described bottom fork axis supports and each side of transition block is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures and by being bolted on the support angle leading flank of bottom fork axis location, bottom fork axis support transition block has the upper surface of a level and upper surface middle part is fixedly installed a bottom fork axis locating piece by bolt, bottom fork axis locating piece upper surface is horizontally arranged with the bottom fork axis locating slot for falling into location for bottom fork axis end, described bottom fork axis positioning component also comprises bottom fork axis hold-down mechanism, described bottom fork axis hold-down mechanism comprises the bottom fork axis be horizontally installed on above bottom fork axis locating piece and compresses pin mounting rod, bottom fork axis compresses pin mounting rod one end and to be arranged on the support angle leading flank of bottom fork axis location and the other end spins and is combined with the vertical bottom fork axis arranged and compresses pin, and bottom fork axis compresses lower the rectifying of pin and to arrange bottom fork axis locating slot and for realizing the compression to bottom fork axis end behind location.

As optimization, described side cover lock journal stirrup positioning component comprises the side cover lock journal stirrup locating piece being fixed on the bottom fork axis support transition block medial surface front portion on right side by bolt, side cover lock journal stirrup locating piece upper end raises up and forms side cover lock journal stirrup location division, side cover lock journal stirrup location division is laterally run through and is provided with side cover lock journal stirrup locating hole, be combined with side cover lock journal stirrup alignment pin in side cover lock journal stirrup locating hole, the earhole of side cover lock journal stirrup alignment pin on inserting side cover lock journal stirrup locating hole and side cover lock journal stirrup realizes the location of offside cover lock journal stirrup.

As optimization, described side cover down journal positioning component comprises the side cover down journal locating piece being fixedly mounted on correspondence position in the middle part of the support angle medial surface of bottom fork axis location by bolt, side cover down journal locating piece rearward end forms unsettled side cover down journal location division, side cover down journal location division is laterally run through and is provided with side cover down journal locating hole, be combined with side cover down journal alignment pin in side cover down journal locating hole, side cover down journal alignment pin realizes the location of side cover down journal for inserting earhole on side cover down journal and side cover down journal locating hole.

As optimization, described front boss positioning component comprises the front boss locating piece being fixed on support angle leading flank top, two bottom fork axis location by bolt, there is on front side of front boss locating piece the front boss positioning convex extended to form forward, front boss positioning convex laterally runs through and is provided with front boss locating hole, laterally run through in front boss locating hole and be combined with a front boss backstay, described front boss backstay is for realizing the location to front boss through the pilot hole on front boss locating hole and front boss.

As optimization, described upper pipe front waist section positioning component comprises two are fixed on two bottom fork axis location support angle leading flanks respectively upper pipe front waist section locating piece by bolt, upper pipe front waist section locating piece is positioned at front boss locating piece top position, and upper pipe front waist section locating piece upper surface is corresponding is along the longitudinal direction provided with the upper pipe front waist section locating slot falling into location for keeping supplying pipe front waist section, upper pipe front waist section positioning component also comprises pipe front waist section hold-down mechanism, described upper pipe front waist section hold-down mechanism comprises vertical setting and is installed in rotation on the upper pipe front waist section compression support bar at support angle top, bottom fork axis location, upper pipe front waist section compression post upper is horizontally installed with pipe front waist section compression connecting rod, upper pipe front waist section compression connecting rod one end spins and is combined with the vertical upper pipe front waist section compression pin arranged, upper pipe front waist section compresses the lower proper compression to upper pipe front waist section locating slot setting and for realizing the upper pipe front waist section after to location of pin.

As optimization, described air filter bracket positioning component comprises one piece of air filter bracket location-plate, described air filter bracket location-plate two ends are removably fixed on the bottom fork axis location support angle leading flank above two upper pipe front waist section locating pieces by bolt, and air filter bracket location-plate trailing flank is used for and air filter bracket leading flank connects spacing.

Like this, air filter bracket location-plate is disassembled in advance during use, first engine suspension installing rack is placed in its installation site, then suspended axle lower after suspended axle upper after engine and engine is inserted laterally in the installing hole on corresponding engine rear overhang hanging scroll locating hole and engine suspension installing rack respectively, again bottom fork axis to be inserted in the installing hole on engine suspension installing rack and to make its two ends drop in bottom fork axis locating slot, make it realize suspended axle upper after engine simultaneously, the location of lower suspended axle and bottom fork axis after engine, leg-of-mutton three anchor points relying on again these three components to form achieve the location to engine suspension installing rack, then rotate and regulate bottom fork axis compression pin to make its lower end realize being fixed bottom fork axis downwards, also achieve fixing engine suspension installing rack by its constraint simultaneously, side cover is locked journal stirrup installation end and fit to engine suspension installing rack right side central installation site, realize the location of offside cover lock journal stirrup by side cover lock journal stirrup alignment pin through the earhole on side cover lock journal stirrup locating hole and side cover lock journal stirrup, main-beam pipe lower end to be inserted in engine suspension installing rack and to be connected on its installation site, after engine suspension installing rack is fixed, namely realizing the location to main-beam pipe hypomere simultaneously, two storage battery journal stirrup welding ends are fitted to corresponding installation site on main-beam pipe, storage battery journal stirrup alignment pin is inserted the location of earhole realization to storage battery journal stirrup of storage battery journal stirrup locating hole and corresponding storage battery journal stirrup, the via hole on engine suspension installing rack inserted in front for lower pipe lower end and makes its end abutment on bottom fork axis, realizing the location to lower pipe lower end, lower pipe upper end realizes behind lower pipe entirety location by other location structure, the laminating of side cover down journal welding ends is abutted to corresponding installation site on lower pipe, and the earhole inserted by side cover down journal alignment pin on side cover down journal locating hole and side cover down journal realizes the location to side cover down journal, upper pipe front end is fitted to corresponding installation site on main-beam pipe, realize location in the upper pipe front waist section locating slot making pipe front waist section drop on pipe front waist section locating piece, and then rotate and regulate upper pipe front waist section to compress pin to make its lower end realize being fixed upper pipe front waist section downwards, front boss front end is fitted to installation site between main-beam pipe and upper pipe, by front boss backstay through the location of pilot hole realization to front boss on front boss locating hole and front boss, after completing the location of above-mentioned each component like this, can adopt that welding gun is disposable completes being welded and fixed between above-mentioned oriented each component, and then rotate adjustment and unclamp pipe front waist section and compress pin, then rotate upper pipe front waist section compression support bar and make pipe front waist section compress pin to be threaded to bottom fork axis location support angle outer fix to avoid interfering, install air filter bracket location-plate again, air filter bracket is snapped into installation site between two upper pipes, and make on front side of air filter bracket and the location that connects on rear side of air filter bracket location-plate, complete the welding between air filter bracket and upper pipe, complete and processing is welded and fixed to knight's car sample vehicle frame middle part component.Make each component relative-position error reliable and welding operation is convenient and swift, provide cost savings.Simultaneously, realize being connected and coordinating owing to have employed between standard square chest, support angle, hold-down mechanism and three-dimensional mounting platform and other non-standard align members, make each location structure can carry out adjustment flexibly and easily as required to install, make it be suitable for very much sample trial-production to need to use when adjusting each component partial member position, dramatically saves on R&D costs.Meanwhile, wherein the non-standard align member of part can realize the location to multiple component simultaneously, and vibrational power flow is ingenious and ensure that the precision of mutual alignment.Particularly go up the rotatable setting of pipe front waist section hold-down mechanism and the detachable setting of air filter bracket location-plate, make it possible to the positioning welding completed successively upper pipe front waist section and air filter bracket, avoid mutual interference, drastically increase vehicle frame integral solder efficiency.

In sum, the present invention can simplify assemble welding operation, has simple to operate, with low cost, and can facilitate the advantages such as the trial-production adjustment of knight's car sample vehicle frame middle part.

Accompanying drawing explanation

The front view of a kind of knight's car sample welding clamp of vehicle frame of required employing when Fig. 1 is a kind of the invention process.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the front view of Fig. 1 when using.

Fig. 4 is the top view of Fig. 3.

Detailed description of the invention

When implementing below in conjunction with a kind of the inventive method, the present invention is described in further detail for required employing knight car sample welding clamp of vehicle frame and accompanying drawing thereof.

Optimum embodiment: as Figure 1-4, a kind of knight's car sample welding clamp of vehicle frame required when this method is implemented, comprise upper surface and all side surfaces all have some installing holes three-dimensional mounting platform 1 according to constant spacing arranged in arrays, and be arranged on vehicle frame front waist section positioning welding clamp structure, vehicle frame middle part positioning welding clamp structure and the vehicle frame rear section positioning welding clamp structure on three-dimensional mounting platform 1; Described vehicle frame front waist section positioning welding clamp structure is for realizing the location to head tube 2, front inclined tube 3, main-beam pipe front waist section 4, head tube connecting plate 5, tube connector 6, direction limited block 7, radiator journal stirrup 8, two engine front overhang hanging scrolls 9 and fuel tank installation shaft 10; Described vehicle frame middle part positioning welding clamp structure is for realizing the location to suspended axle 13 lower after suspended axle 12 upper after engine suspension installing rack 11, engine, engine, bottom fork axis 14, side cover lock journal stirrup 15, storage battery journal stirrup 16, front boss 17, upper pipe front waist section 18, air filter bracket 19, lower pipe front waist section 20 and side cover down journal 21; Described vehicle frame rear section positioning welding clamp structure is for realizing the location to journal stirrup 24, upper pipe end segment 25, rear stiffener 26, cushion lock support 27, seat cushion after-poppet 28 and tail-hood support 29 after lower pipe rear section 22, electrical part journal stirrup 23, side cover.

Like this, the weld jig of such scheme, can realize, middle part anterior to main body of vehicle frame and rear portion and the Set and Positioning of each Accessory Members on it simultaneously, can directly adopt behind location welding gun to realize rapidly each component between be welded and fixed.Make each component relative-position error reliable and welding operation is convenient and swift, dramatically saves on cost.

Wherein, described vehicle frame front waist section positioning welding clamp structure comprises head tube positioning component, direction limited block positioning component, head tube connecting plate and fuel tank installation shaft positioning component, radiator journal stirrup positioning component, front inclined tube and engine front overhang hanging scroll positioning component, main-beam pipe front waist section and tube connector positioning component;

Described head tube positioning component comprises the head tube location standard square chest 30 of a rectangular body structure of entirety, the each side of standard square chest 30 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in described head tube location, and head tube location standard square chest 30 is by being bolted to leading flank medium position on three-dimensional mounting platform 1; standard square chest 30 upper end, described head tube location is fixedly installed a head tube location standard angle device 31, described head tube location standard angle device 31 comprises the fixed block and moving block separately with a hinged end and a folding end, the hinged end of fixed block and moving block rotatably hinged and be provided with in hinged place for realize rotational angle location rotational angle alignment pin, described fixed block is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures with on moving block, the fixed block folding end of described head tube location standard angle device 31 is arranged forward and is horizontally fixed on standard square chest 30 upper end, head tube location by bolt, the moving block upper surface middle part of described head tube location standard angle device 31 is upwards fixedly installed head tube positioning round table 32, described head tube positioning round table 32 diameter and head tube lower end external diameter coupling and head tube positioning round table axle center place coaxial on be provided with head tube internal diameter coupling head tube locating dowel 33,

Described direction limited block positioning component comprises limited block location, the direction support angle 34 of a L-shaped structure of entirety, each side of limited block location, described direction support angle 34 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform 1 and array of apertures, the laminating of limited block location, direction support angle 34 lower surface moving block upper surface upper position by being bolted to head tube location standard angle device 31, support angle 34 trailing flank top, limited block location, direction is fixedly installed a direction limited block locating piece 35, limited block locating piece 35 one end, direction is fixed on support angle trailing flank top, head tube annex location, the other end extends to the back lower place and has the projection realizing limited block location, direction in two grooves entering for grafting on direction limited block 7 in end,

Described head tube connecting plate and fuel tank installation shaft positioning component comprise the fuel tank installation shaft location support angle 36 of two L-shaped structures of entirety, each side of described fuel tank installation shaft location support angle 36 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures, two fuel tank installation shaft location support angle 36 side surfaces are fitted and respectively by being bolted to side, the left and right sides, standard square chest 30 upper end, head tube location, fuel tank installation shaft location support angle 36 upper side is horizontal surface and is fixed with the fuel tank installation shaft location contiguous block 37 of a L shape at upper side rear portion by bolt, contiguous block 37 upper end, fuel tank installation shaft location is fixedly installed fuel tank installation shaft locating piece 38, fuel tank installation shaft locating piece 38 upper surface is provided with the fuel tank installation shaft locating slot falling into location for oil feeding reservoirs installation shaft 10 two ends,

Described radiator journal stirrup positioning component comprises two radiator journal stirrup locating pieces 39, two radiator journal stirrup locating piece 39 lower surfaces are fitted and respectively by being bolted to support angle upper side forward position, two fuel tank installation shaft location, after radiator journal stirrup locating piece 39, upper end has one for the radiator journal stirrup locating surface with laminating location, radiator journal stirrup front downside, radiator journal stirrup locating surface is provided with radiator journal stirrup locating hole and radiator journal stirrup alignment pin, described radiator journal stirrup alignment pin is for realizing the positioning and locking of radiator journal stirrup 8 through the earhole on radiator journal stirrup and radiator journal stirrup locating hole,

Described front inclined tube and engine front overhang hanging scroll positioning component comprise the engine front overhang hanging scroll location standard square chest 40 of a rectangular body structure of entirety, the each side of standard square chest 40 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in described engine front overhang hanging scroll location, and engine front overhang hanging scroll location standard square chest 40 is by being bolted to front center correspondence position on three-dimensional mounting platform 1; Standard square chest 40 both sides, engine front overhang hanging scroll location are vertically fixedly installed one piece of engine front overhang hanging scroll location-plate 41 by bolt separately, engine front overhang hanging scroll location-plate 41 rear end extends back engine front overhang hanging scroll location standard square chest and is laterally relatively set with two engine front overhang hanging scroll locating holes, and described two engine front overhang hanging scroll locating holes are used for penetrating for two engine front overhang hanging scroll 9 ends realizing location;

Described main-beam pipe front waist section and tube connector positioning component comprise main-beam pipe front waist section and the tube connector location standard square chest 42 of a rectangular body structure of entirety, described main-beam pipe front waist section and each side of tube connector location standard square chest 42 are all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures, and main-beam pipe front waist section and tube connector location standard square chest 42 are by being bolted to position, standard square chest right rear side, engine front overhang hanging scroll location on three-dimensional mounting platform 1; main-beam pipe front waist section and tube connector location standard square chest 42 left surface are fixedly installed a main-beam pipe front waist section and tube connector location standard angle device 43, described main-beam pipe front waist section and tube connector location standard angle device 43 comprise the fixed block and moving block separately with a hinged end and a folding end, the hinged end of fixed block and moving block rotatably hinged and be provided with in hinged place for realize rotational angle location rotational angle alignment pin, described fixed block is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures with on moving block, the fixed block folding end of described main-beam pipe front waist section and tube connector location standard angle device 43 is arranged downwards and fixed block is horizontally fixed on main-beam pipe front waist section and standard square chest 42 left surface top, tube connector location by bolt, in described main-beam pipe front waist section and tube connector location standard angle device 43, the hinged end of fixed block and moving block is positioned at immediately below main-beam pipe front waist section 4 and tube connector 6 connected position, the moving block of main-beam pipe front waist section and tube connector location standard angle device 43 is arranged along the longitudinal direction and upper surface middle part is upwards fixedly installed main-beam pipe front waist section and tube connector locating piece 44, described main-beam pipe front waist section and tube connector locating piece 44 upper surface offer main-beam pipe front waist section and tube connector locating slot and can be used in the sequencing location that realizes main-beam pipe front waist section and tube connector.

Like this, during use, the angle first adjusting head tube location standard angle device opens up into required angle, and then is inserted into by head tube and head tube locating dowel makes its lower end and head tube positioning round table abut to support and realize the location of head tube; Limited block rear end, direction is fitted in installation site, head tube upper end, and in two grooves projection of direction limited block locating piece one end backward being inserted abut on the limited block of direction, realizes the location to direction limited block; Front end on front inclined tube is abutted to head tube trailing flank correspondence position, front inclined tube lower end is made to drop between two pieces of engine front overhang hanging scroll location-plates, by two engine front overhang hanging scrolls through the engine front overhang hanging scroll locating hole on two pieces of engine front overhang hanging scroll location-plates and the installing hole on front inclined tube, make the location that it realizes engine front overhang hanging scroll and front inclined tube simultaneously; Again the inner end of radiator journal stirrup is fitted on the outer corresponding installation site of front inclined tube, make front downside, radiator journal stirrup outer end fit to radiator journal stirrup locating surface on radiator journal stirrup locating piece, and adopt radiator journal stirrup alignment pin to insert radiator to prop up earhole and radiator journal stirrup locating hole and realize the location of radiator journal stirrup and lock; The moving block rotation of main-beam pipe front waist section and tube connector location standard angle device is adjusted to and main-beam pipe front waist section parallel position, again main-beam pipe front end is connected to corresponding installation site, head tube trailing flank top, and main-beam pipe front waist section is dropped in main-beam pipe front waist section on main-beam pipe front waist section and tube connector locating piece and tube connector locating slot, realize the location to main-beam pipe front waist section; The front end of head tube connecting plate, top and bottom are affixed with head tube, main-beam pipe front waist section and the corresponding installation site of front inclined tube respectively, fuel tank installation shaft is horizontally through the pilot hole on head tube connecting plate, and fuel tank installation shaft two ends are dropped in fuel tank installation shaft locating slot, make the location that it realizes fuel tank installation shaft and head tube connecting plate simultaneously; After completing the location of above-mentioned each component like this, can adopt that welding gun is disposable completes being welded and fixed between above-mentioned each component; And then the moving block front end of main-beam pipe front waist section and tube connector location standard angle device is rotated down is adjusted to and tube connector parallel position, again tube connector two ends are abutted to respectively installation site corresponding on front inclined tube and main-beam pipe, by in the main-beam pipe front waist section that drops in the middle part of tube connector on main-beam pipe front waist section and tube connector locating piece and tube connector locating slot, realize the location to tube connector; Then employing welding gun completes the welding to tube connector two ends; Complete and processing is welded and fixed to knight's car sample vehicle frame front waist section component.Make each component relative-position error reliable and welding operation is convenient and swift, provide cost savings.Simultaneously, realize being connected and coordinating (when specifically implementing owing to have employed between standard square chest, support angle, standard angle device and three-dimensional mounting platform and other non-standard align members, described each standard element self be prior art and belong to can direct market buy product, therefore concrete structure is not open in detail in an embodiment), make each location structure can carry out adjustment flexibly and easily as required to install, make it be suitable for very much sample trial-production to need to use when adjusting each component partial member position, dramatically saves on R&D costs.Meanwhile, wherein the non-standard align member of part can realize the location to multiple component simultaneously, and vibrational power flow is ingenious and ensure that the precision of mutual alignment.The particularly vibrational power flow of main-beam pipe front waist section and tube connector positioning component, can complete the clamping welding to main-beam pipe front waist section and tube connector successively, avoid mutual interference, drastically increase vehicle frame integral solder efficiency.

Wherein, described vehicle frame middle part positioning welding clamp structure comprises storage battery journal stirrup positioning component, engine rear overhang hanging scroll positioning component, bottom fork axis positioning component, side cover lock journal stirrup positioning component, side cover down journal positioning component, front boss positioning component, upper pipe front waist section positioning component and air filter bracket positioning component;

Described storage battery journal stirrup positioning component comprises the storage battery journal stirrup location standard square chest 45 of a rectangular body structure of entirety, the each side of standard square chest 45 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in described storage battery journal stirrup location, storage battery journal stirrup location standard square chest 45 is by being bolted on three-dimensional mounting platform position, standard square chest right rear side, engine front overhang hanging scroll location (when specifically implementing, described storage battery journal stirrup location standard square chest 45 and main-beam pipe front waist section and tube connector location standard square chest 42 are same component, with saving member better, simplify clamp structure), storage battery journal stirrup location standard square chest 45 right flank upper position is fixedly connected with one piece of storage battery journal stirrup location-plate 46 by bolt, storage battery journal stirrup location-plate 46 rear portion extends back and upper and lower two ends, rear portion extend to corresponding position, two storage battery journal stirrup installation positions, upper and lower two ends, storage battery journal stirrup location-plate 46 rear portion are laterally run through separately and are provided with a storage battery journal stirrup locating hole and are equipped with storage battery journal stirrup alignment pin in storage battery journal stirrup locating hole, and storage battery journal stirrup alignment pin realizes storage battery journal stirrup location for the earhole inserting storage battery journal stirrup locating hole and corresponding storage battery journal stirrup 16,

Described engine rear overhang hanging scroll positioning component comprises the engine rear overhang hanging scroll location-plate 47 that two pieces of entirety are vertically arranged, two pieces of engine rear overhang hanging scroll location-plate 47 front ends are by being bolted to the left and right sides, standard square chest 45 bottom, storage battery journal stirrup location, engine rear overhang hanging scroll location-plate 47 rear end extends back and both sides are horizontally arranged with engine rear overhang hanging scroll locating hole separately up and down, the engine rear overhang hanging scroll locating hole of two engine rear overhang hanging scroll location-plate rear upper side is horizontally disposed with and locates for inserting for the two ends of suspended axle 12 upper after engine, engine rear overhang hanging scroll locating hole on the downside of two engine rear overhang hanging scroll location-plate rear ends is horizontally disposed with and locates for inserting for the two ends of suspended axle 13 lower after engine,

It is vertical leg-of-mutton bottom fork axis location support angle 48 that described bottom fork axis positioning component comprises two entirety, each side is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform 1 and array of apertures to bottom fork axis location support angle 48, two bottom fork axis location support angle 48 be symmetrically arranged in respectively standard square chest 45 rear, storage battery journal stirrup location the left and right sides and by being bolted to three-dimensional mounting platform 1 upper surface, described bottom fork axis location support angle 48 leading flank is the installed surface of vertical setting and is provided with the L-shaped bottom fork axis support transition block 49 of an entirety in leading flank lower end, described bottom fork axis supports and each side of transition block 49 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform 1 and array of apertures and by being bolted on support angle 48 leading flank of bottom fork axis location, bottom fork axis support transition block 49 has the upper surface of a level and upper surface middle part is fixedly installed a bottom fork axis locating piece 50 by bolt, bottom fork axis locating piece 50 upper surface is horizontally arranged with the bottom fork axis locating slot for falling into location for bottom fork axis end, described bottom fork axis positioning component also comprises bottom fork axis hold-down mechanism, described bottom fork axis hold-down mechanism comprises the bottom fork axis be horizontally installed on above bottom fork axis locating piece and compresses pin mounting rod 51, bottom fork axis compresses pin mounting rod 51 one end and to be arranged on support angle 48 leading flank of bottom fork axis location and the other end spins and is combined with the vertical bottom fork axis arranged and compresses pin 52, and bottom fork axis compresses pin and rectifies for 52 times and to arrange bottom fork axis locating slot and for realizing the compression to bottom fork axis 14 end behind location,

Described side cover lock journal stirrup positioning component comprises the side cover lock journal stirrup locating piece 57 being fixed on the bottom fork axis support transition block 49 medial surface front portion on right side by bolt, side cover lock journal stirrup locating piece 57 upper end raises up and forms side cover lock journal stirrup location division, side cover lock journal stirrup location division is laterally run through and is provided with side cover lock journal stirrup locating hole, be combined with side cover lock journal stirrup alignment pin in side cover lock journal stirrup locating hole, the earhole of side cover lock journal stirrup alignment pin on inserting side cover lock journal stirrup locating hole and side cover lock journal stirrup realizes the location of offside cover lock journal stirrup 15;

Side cover down journal positioning component comprises the side cover down journal locating piece 53 being fixedly mounted on correspondence position in the middle part of support angle 48 medial surface of bottom fork axis location by bolt, side cover down journal locating piece 53 rearward end forms unsettled side cover down journal location division, side cover down journal location division is laterally run through and is provided with side cover down journal locating hole, be combined with side cover down journal alignment pin in side cover down journal locating hole, side cover down journal alignment pin realizes the location of side cover down journal 21 for inserting earhole on side cover down journal and side cover down journal locating hole;

Described front boss positioning component comprises the front boss locating piece 54 being fixed on support angle 48 leading flank top, two bottom fork axis location by bolt, there is on front side of front boss locating piece 54 the front boss positioning convex extended to form forward, front boss positioning convex laterally runs through and is provided with front boss locating hole, laterally run through in front boss locating hole and be combined with a front boss backstay, described front boss backstay is used for through the location of pilot hole realization to front boss on front boss locating hole and front boss 17;

Described upper pipe front waist section positioning component comprises two are fixed on two bottom fork axis location support angle 48 leading flanks respectively upper pipe front waist section locating piece 55 by bolt, upper pipe front waist section locating piece 55 is positioned at front boss locating piece 54 top position, and upper pipe front waist section locating piece 55 upper surface is corresponding is along the longitudinal direction provided with the upper pipe front waist section locating slot falling into location for keeping supplying pipe front waist section, upper pipe front waist section positioning component also comprises pipe front waist section hold-down mechanism, described upper pipe front waist section hold-down mechanism comprises vertical setting and is installed in rotation on the upper pipe front waist section compression support bar 56 at support angle top, bottom fork axis location, upper pipe front waist section compression support bar 56 upper end is horizontally installed with pipe front waist section compression connecting rod, upper pipe front waist section compression connecting rod one end spins and is combined with the vertical upper pipe front waist section compression pin 58 arranged, upper pipe front waist section compresses pin 58 times proper compressions to upper pipe front waist section locating slot setting and for realizing the upper pipe front waist section 18 after to location,

Described air filter bracket positioning component comprises one piece of air filter bracket location-plate 59, described air filter bracket location-plate 59 two ends are removably fixed on bottom fork axis location support angle 48 leading flank above two upper pipe front waist section locating pieces 55 by bolt, and air filter bracket location-plate 59 trailing flank is used for and air filter bracket 19 leading flank connects spacing.

Wherein, described vehicle frame rear section positioning welding clamp structure comprises journal stirrup and rear stiffener positioning component, upper pipe end segment positioning component, cushion lock support positioning component, seat cushion after-poppet positioning component and tail-hood support positioning component after lower pipe rear section positioning component, electrical part journal stirrup positioning component, side cover;

Described lower pipe rear section positioning component comprises the vehicle frame rear section component location standard square chest 60 of two rectangular body structures of entirety, the each side of standard square chest 60 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform 1 and array of apertures in vehicle frame rear section component location, two vehicle frame rear section component location standard square chests 60 are separately by being bolted to position, the left and right sides, rear portion on three-dimensional mounting platform 1, lower pipe rear section positioning component also comprises the lower pipe rear section location support angle 61 of two entirety structures triangular in shape, on each side of support angle 61, lower pipe rear section location all according to three-dimensional mounting platform on 1 the consistent spacing of installing hole and array of apertures be furnished with some installing holes, two lower pipe rear section location support angle 61 are respectively by being bolted to corresponding vehicle frame rear section component location standard square chest 60 leading flank medium position, lower pipe rear section location support angle 61 upper surface is horizontal plane, lower pipe rear section location support angle 61 front inner is fixedly installed lower pipe rear section locating piece 62 by bolt on the surface, described lower pipe rear section locating piece 62 surface thereof is provided with lower pipe rear section locating slot and falls into location for the lower pipe rear section of confession,

Described electrical part journal stirrup positioning component comprises an electrical part journal stirrup locating piece 63, electrical part journal stirrup locating piece 63 is horizontally disposed with and outer end is fixedly installed on the upper horizontal surface front end correspondence position of lower pipe rear section location support angle 61 in left side by bolt, and electrical part journal stirrup locating piece 63 the inner is provided with the electrical part journal stirrup alignment pin of electrical part journal stirrup locating hole and cooperation for realizing the location to electrical part journal stirrup 23;

After described side cover, journal stirrup and rear stiffener positioning component comprise journal stirrup and rear stiffener locating piece 64 after the vertical side cover arranged, after side cover, journal stirrup and rear stiffener locating piece 64 bottom are by being bolted to the inner surface of corresponding lower pipe rear section location support angle 61, after side cover, journal stirrup and rear stiffener locating piece 64 front end have journal stirrup location division after the side cover upwards extended to form, after side cover, journal stirrup location division is laterally run through journal stirrup locating hole after being provided with side cover and journal stirrup alignment pin after being combined with side cover, after side cover, journal stirrup alignment pin is for inserting the location of earhole realization to journal stirrup after side cover 24 after side cover on journal stirrup, after side cover, journal stirrup and rear end, rear stiffener locating piece 64 front end have the rear stiffener location division extended to form rearwardly and upwardly, on rear stiffener location division compartment of terrain laterally run through be provided with two after stiffener locating hole, be combined with rear stiffener alignment pin in rear stiffener locating hole and realize the location to rear stiffener 26 for the correspondence pilot hole inserted on rear stiffener,

Described cushion lock support positioning component comprises the vertical cushion lock support location-plate 65 arranged, described cushion lock support location-plate 65 lower end is by being bolted to standard square chest 60 medial surface middle and upper part, vehicle frame rear section component location, cushion lock support location-plate 65 upper end forward upward is oblique to be extended on front side of vehicle frame rear section component location standard square chest 60 and to be provided with two cushion lock rack positioning holes in end, described cushion lock rack positioning hole is combined with cushion lock support alignment pin for realizing the location to cushion lock support 27 through the installing hole on cushion lock support;

Described upper pipe end segment positioning component comprises the upper pipe end segment location standard square chest 66 of a rectangular body structure of entirety, the each side of standard square chest 66 is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in upper pipe end segment location, upper pipe end segment location standard square chest 66 is horizontal strip cuboid and two ends are laterally fixedly mounted on standard square chest 60 medial surface top, vehicle frame rear section component location by bolt, upper pipe end segment location standard square chest 66 upper surface end positions separately correspondence is upwards fixedly installed a upper pipe end segment locating piece 67, described upper pipe end segment locating piece 67 upper surface formation falls into the upper pipe end segment locating slot of location by keeping supplying pipe end segment, described upper pipe end segment positioning component also comprises pipe end segment hold-down mechanism, described upper pipe end segment hold-down mechanism comprises vertical setting and is installed in rotation on the upper pipe end segment compression support bar 68 of vehicle frame rear section component location standard square chest upper surface, upper pipe end segment compression support bar 68 upper end is horizontally installed with pipe end segment compression connecting rod, upper pipe end segment compression connecting rod one end spins and is equipped with pipe end segment compression pin 69, upper pipe end segment compresses pin 69 times proper compressions to upper pipe end segment locating slot setting and for realizing the upper pipe end segment 25 after to location,

Described seat cushion after-poppet positioning component comprises one piece of seat cushion after-poppet locating piece 70 vertically arranged, described seat cushion after-poppet locating piece 70 lower end is fixed on leading flank in the middle part of pipe end segment location standard square chest 66, seat cushion after-poppet locating piece 70 upper end correspondence is provided with seat cushion after-poppet positioning boss, and described seat cushion after-poppet positioning boss is used for the location of locating hole realization to seat cushion after-poppet 28 being upwards inserted into seat cushion after-poppet 28 top surface;

Described tail-hood support positioning component comprises corresponding two the tail-hood support locating dowels 71 being vertically arranged at the left and right sides, standard square chest 66 upper surface rear, pipe end segment location, and tail-hood support locating dowel 71 upper end is formed with tail-hood support positioning boss and is inserted into locating hole on tail-hood support bottom surface for correspondence and realizes the location to tail-hood support 29.

Like this, first tail-hood support is put according to installation position and make its its on two locating holes drop into two tail-hood support locating dowel upper ends respectively tail-hood support positioning boss on realize to tail-hood support location; Upper pipe end segment dropped into during use in upper pipe end segment locating slot and realize locating, then the upper pipe end segment of rotation adjustment compresses to sell and makes its lower end realize being fixed upper pipe end segment downwards; Upper end after lower pipe is connected to the corresponding installation site of upper pipe lower surface and lower pipe rear section is dropped in lower pipe rear section locating slot and realize location; Electrical part journal stirrup installation end is fitted to installation site on lower pipe, in the earhole being inserted into electrical part journal stirrup locating hole and electricity piece journal stirrup by electrical part journal stirrup alignment pin, realizes the location to electrical part journal stirrup; Journal stirrup upper end after side cover is fitted to installation site on upper pipe, realizes the location to journal stirrup after side cover by the earhole on journal stirrup after journal stirrup locating hole after journal stirrup alignment pin insertion side cover after side cover and side cover; To fit to installation site between lower pipe rear side and upper pipe rear side on the upside of rear stiffener, and after leaning on two, the stiffener alignment pin pilot hole be inserted into respectively on corresponding rear stiffener locating hole and rear stiffener realizes the location to rear stiffener; Cushion lock support installing end is fitted to rear stiffener lateral rear installation site, then seat pad lock support alignment pin realizes the location to cushion lock support through the installing hole on cushion lock rack positioning hole and cushion lock support; After completing the location of above-mentioned each component like this, can adopt that welding gun is disposable completes being welded and fixed between above-mentioned oriented each component; And then rotate adjustment and unclamp pipe end segment and compress pin, then rotate upper pipe end segment compression support bar and make pipe end segment compress pin to be threaded to vehicle frame rear section component location standard square chest outer fix to avoid interfering; Again seat cushion after-poppet is placed in its installation position, seat cushion after-poppet both sides are made to fall within pipe end segment upper surface, and the locating hole of seat cushion after-poppet top surface is dropped into seat cushion after-poppet positioning boss realizes the location to seat cushion after-poppet, complete the welding between seat cushion after-poppet and upper pipe; Complete and processing is welded and fixed to each component of knight's car sample vehicle frame rear section.Make each component relative-position error reliable and welding operation is convenient and swift, provide cost savings.Simultaneously, realize being connected and coordinating owing to have employed between standard square chest, support angle, hold-down mechanism and three-dimensional mounting platform and other non-standard align members, make each location structure can carry out adjustment flexibly and easily as required to install, make it be suitable for very much sample trial-production to need to use when adjusting each component partial member position, dramatically saves on R&D costs.Meanwhile, wherein the non-standard align member of part can realize the location to multiple component simultaneously, and vibrational power flow is ingenious and ensure that the precision of mutual alignment.Particularly go up the rotatable setting of pipe end segment hold-down mechanism, make it possible to the positioning welding completed successively upper pipe afterbody and seat cushion after-poppet, avoid mutual interference, drastically increase vehicle frame integral solder efficiency.

In sum, above-mentioned fixture can simplify assemble welding operation, has simple to operate, with low cost, and can facilitate the advantages such as the trial-production adjustment of knight's car sample.

Claims

1. knight's car sample vehicle frame middle part structure processing method, it is characterized in that, first employing weld jig completes the location to lower suspended axle, bottom fork axis, side cover lock journal stirrup, storage battery journal stirrup, front boss, upper pipe front waist section, lower pipe front waist section and side cover down journal after suspended axle upper after engine suspension installing rack, engine, engine; Adopt that welding gun is disposable completes being welded and fixed of above-mentioned component again, wherein realize comprising to the structure of upper pipe front waist section location the upper pipe front waist section hold-down mechanism compressed for realizing upper pipe front waist section, upper pipe front waist section hold-down mechanism can horizontally rotate arrange and after completing above-mentioned welding, upper pipe front waist section hold-down mechanism is horizontally rotated and outwards avoids interfering, air filter journal stirrup location-plate for realizing air filter bracket location is installed again, realize the location to air filter bracket leading flank by air filter bracket location-plate, then realize being welded and fixed of air filter bracket.

2. knight's car sample vehicle frame middle part structure processing method as claimed in claim 1, it is characterized in that, described weld jig comprises upper surface and all side surfaces all have some installing holes three-dimensional mounting platform according to constant spacing arranged in arrays, also comprise the storage battery journal stirrup positioning component for realizing storage battery journal stirrup location, the engine rear overhang hanging scroll positioning component that under after suspended axle and engine, suspended axle is located is gone up after realizing engine, for realizing the bottom fork axis positioning component of bottom fork axis location, for realizing the side cover lock journal stirrup positioning component of side cover lock journal stirrup location, for realizing the side cover down journal positioning component of side cover down journal location, for realize front boss location before boss positioning component, for realizing the upper pipe front waist section positioning component of upper pipe front waist section location and the air filter bracket positioning component for realizing air filter journal stirrup location.

3. knight's car sample vehicle frame middle part structure processing method as claimed in claim 2, it is characterized in that, described storage battery journal stirrup positioning component comprises the storage battery journal stirrup location standard square chest of a rectangular body structure of entirety, the each side of standard square chest is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in described storage battery journal stirrup location, and storage battery journal stirrup location standard square chest is by being bolted to position, standard square chest right rear side, engine front overhang hanging scroll location on three-dimensional mounting platform; Storage battery journal stirrup location standard square chest right flank upper position is fixedly connected with one piece of storage battery journal stirrup location-plate by bolt, storage battery journal stirrup location-plate rear portion extends back and upper and lower two ends, rear portion extend to corresponding position, two storage battery journal stirrup installation positions, upper and lower two ends, storage battery journal stirrup location-plate rear portion are laterally run through separately and are provided with a storage battery journal stirrup locating hole and are equipped with storage battery journal stirrup alignment pin in storage battery journal stirrup locating hole, and storage battery journal stirrup alignment pin realizes storage battery journal stirrup location for the earhole inserting storage battery journal stirrup locating hole and corresponding storage battery journal stirrup.

4. knight's car sample vehicle frame middle part structure processing method as claimed in claim 3, it is characterized in that, described engine rear overhang hanging scroll positioning component comprises the engine rear overhang hanging scroll location-plate that two pieces of entirety are vertically arranged, two pieces of engine rear overhang hanging scroll location-plate front ends are by being bolted to the left and right sides, standard square chest bottom, storage battery journal stirrup location, engine rear overhang hanging scroll location-plate rear end extends back and both sides are horizontally arranged with engine rear overhang hanging scroll locating hole separately up and down, the engine rear overhang hanging scroll locating hole of two engine rear overhang hanging scroll location-plate rear upper side is horizontally disposed with and locates for inserting for the two ends of suspended axle upper after engine, engine rear overhang hanging scroll locating hole on the downside of two engine rear overhang hanging scroll location-plate rear ends is horizontally disposed with and locates for inserting for the two ends of suspended axle lower after engine.

5. knight's car sample vehicle frame middle part structure processing method as claimed in claim 3, it is characterized in that, it is vertical leg-of-mutton bottom fork axis location support angle that described bottom fork axis positioning component comprises two entirety, the each side of support angle is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures in bottom fork axis location, two bottom fork axis location support angle be symmetrically arranged in respectively standard square chest rear, storage battery journal stirrup location the left and right sides and by being bolted to three-dimensional mounting platform upper surface, described bottom fork axis location support angle leading flank is the installed surface of vertical setting and is provided with the L-shaped bottom fork axis support transition block of an entirety in leading flank lower end, described bottom fork axis supports and each side of transition block is all furnished with some installing holes according to the spacing consistent with the installing hole on three-dimensional mounting platform and array of apertures and by being bolted on the support angle leading flank of bottom fork axis location, bottom fork axis support transition block has the upper surface of a level and upper surface middle part is fixedly installed a bottom fork axis locating piece by bolt, bottom fork axis locating piece upper surface is horizontally arranged with the bottom fork axis locating slot for falling into location for bottom fork axis end, described bottom fork axis positioning component also comprises bottom fork axis hold-down mechanism, described bottom fork axis hold-down mechanism comprises the bottom fork axis be horizontally installed on above bottom fork axis locating piece and compresses pin mounting rod, bottom fork axis compresses pin mounting rod one end and to be arranged on the support angle leading flank of bottom fork axis location and the other end spins and is combined with the vertical bottom fork axis arranged and compresses pin, and bottom fork axis compresses lower the rectifying of pin and to arrange bottom fork axis locating slot and for realizing the compression to bottom fork axis end behind location.

6. knight's car sample vehicle frame middle part structure processing method as claimed in claim 5, it is characterized in that, described side cover lock journal stirrup positioning component comprises the side cover lock journal stirrup locating piece being fixed on the bottom fork axis support transition block medial surface front portion on right side by bolt, side cover lock journal stirrup locating piece upper end raises up and forms side cover lock journal stirrup location division, side cover lock journal stirrup location division is laterally run through and is provided with side cover lock journal stirrup locating hole, side cover lock journal stirrup alignment pin is combined with in side cover lock journal stirrup locating hole, the earhole of side cover lock journal stirrup alignment pin on inserting side cover lock journal stirrup locating hole and side cover lock journal stirrup realizes the location of offside cover lock journal stirrup.

7. knight's car sample vehicle frame middle part structure processing method as claimed in claim 5, it is characterized in that, described side cover down journal positioning component comprises the side cover down journal locating piece being fixedly mounted on correspondence position in the middle part of the support angle medial surface of bottom fork axis location by bolt, side cover down journal locating piece rearward end forms unsettled side cover down journal location division, side cover down journal location division is laterally run through and is provided with side cover down journal locating hole, side cover down journal alignment pin is combined with in side cover down journal locating hole, side cover down journal alignment pin realizes the location of side cover down journal for inserting earhole on side cover down journal and side cover down journal locating hole.

8. knight's car sample vehicle frame middle part structure processing method as claimed in claim 5, it is characterized in that, described front boss positioning component comprises the front boss locating piece being fixed on support angle leading flank top, two bottom fork axis location by bolt, there is on front side of front boss locating piece the front boss positioning convex extended to form forward, front boss positioning convex laterally runs through and is provided with front boss locating hole, laterally run through in front boss locating hole and be combined with a front boss backstay, described front boss backstay is for realizing the location to front boss through the pilot hole on front boss locating hole and front boss.

9. knight's car sample vehicle frame middle part structure processing method as claimed in claim 8, it is characterized in that, described upper pipe front waist section positioning component comprises two are fixed on two bottom fork axis location support angle leading flanks respectively upper pipe front waist section locating piece by bolt, upper pipe front waist section locating piece is positioned at front boss locating piece top position, and upper pipe front waist section locating piece upper surface is corresponding is along the longitudinal direction provided with the upper pipe front waist section locating slot falling into location for keeping supplying pipe front waist section, upper pipe front waist section positioning component also comprises pipe front waist section hold-down mechanism, described upper pipe front waist section hold-down mechanism comprises vertical setting and is installed in rotation on the upper pipe front waist section compression support bar at support angle top, bottom fork axis location, upper pipe front waist section compression post upper is horizontally installed with pipe front waist section compression connecting rod, upper pipe front waist section compression connecting rod one end spins and is combined with the vertical upper pipe front waist section compression pin arranged, upper pipe front waist section compresses the lower proper compression to upper pipe front waist section locating slot setting and for realizing the upper pipe front waist section after to location of pin.

10. knight's car sample vehicle frame middle part structure processing method as claimed in claim 8, it is characterized in that, described air filter bracket positioning component comprises one piece of air filter bracket location-plate, described air filter bracket location-plate two ends are removably fixed on the bottom fork axis location support angle leading flank above two upper pipe front waist section locating pieces by bolt, and air filter bracket location-plate trailing flank is used for and air filter bracket leading flank connects spacing.