CN205021079U - Camber beam car for sample frame girder nest of tubes close fixed -position welding anchor clamps structure - Google Patents

Abstract

The utility model discloses a frame main beam tube combination positioning welding fixture structure for a curved beam vehicle sample, which is characterized in that it includes a main beam tube positioning component for realizing the positioning of the main beam tube, and a positioning component for realizing the windshield bracket The positioned windshield bracket positioning assembly, the center seam panel front support positioning assembly for positioning the center seam front support, and the center seam rear support positioning assembly for realizing the center seam rear support positioning. The utility model can simplify the welding and assembling process, has the advantages of simple operation, low cost, convenient trial production and adjustment of bending beam car samples, and the like.

Description

A combination positioning welding fixture structure of the main beam tube of the frame for the sample of the curved beam vehicle

technical field

The utility model relates to the field of motorcycle frame processing, in particular to a frame main beam tube combination positioning welding fixture structure for a curved beam vehicle sample.

Background technique

The curved beam motorcycle refers to the motorcycle type in which the main beam of the motorcycle in front of the seat cushion is bent from the right front to the rear to form a downward gap in front of the seat cushion. Underbone motorcycles are the most common motorcycles nowadays. Among the motorcycle family, its durability, simple operation and other characteristics are deeply loved by consumers. As an economical and practical vehicle, the underbone motorcycle has become a popular vehicle suitable for various consumer groups. At the same time, in the process of motorcycle research and development, it is often necessary to develop and design sample products first, and then conduct tests to ensure the reliability and practicability of the final product.

In a new curved beam motorcycle model LF110, the front half of the frame mainly includes a standpipe at the front end. The right front side of the upper end also needs to be welded to fix the direction lock bracket, the rear side of the upper end of the standpipe needs to be welded and fixed to the instrument case bracket, the front side of the lower end of the standpipe needs to be welded to fix the direction lock block, and the lower part of the front side of the standpipe above the direction lock block needs to be welded Fix a front cover mounting plate extending forward; in addition, a windshield bracket needs to be welded and fixed on the left and right sides of the front end of the main beam tube close to the position of the standpipe, and the front part of the main beam tube behind the windshield bracket The surface also needs to be welded and fixed with an inverted U-shaped center seam plate front bracket, and the middle and rear part of the main beam tube needs to be welded with a piece of center seam plate rear bracket with a U-shaped cross-section as a whole and extending outward on both sides. The rear end of the beam tube also needs to be fixedly welded with an engine suspension mounting plate. The engine suspension mounting plate has a left-right symmetrical covering structure and the upper end is covered and lapped on the rear end of the main beam tube and welded and fixed. The middle part of the engine suspension mounting plate needs to be fixed horizontally through the left and right sides A flat fork shaft is set, and the front lower side of the engine suspension mounting plate is horizontally and horizontally provided with positioning holes for the engine rear upper suspension and the engine rear lower suspension positioning holes, and the rear lower side of the engine suspension mounting plate is also left and right. .

The front half of the frame with the above structure is usually welded in turn by the welding fixtures of the standpipe, the main beam pipe and the connection accessories on it, which are designed and fixed in sequence, and then welded together as a whole. . Like this, there are numerous working procedures, complicated operation, and the defects that the cost is too high. Especially because sample production often needs to adjust small structures such as some local auxiliary components, in this way, welding fixtures with fixed structures are used for each adjustment, which greatly increases the cost and restricts the expansion of sample research and development.

Especially among them, the main beam-tube combination has a unique structure and many accessories to be welded, so when considering the welding process, the above-mentioned defects are particularly obvious.

Utility model content

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: how to provide a bending beam car sample car that can simplify the process, make it easy to operate, low in cost, and further make it convenient for trial production and adjustment. Frame main beam tube combination positioning welding fixture structure.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A combined positioning welding fixture structure of frame main beam tubes for curved beam vehicle samples, characterized in that it includes a main beam tube positioning assembly for realizing the positioning of the main beam tubes, and a windshield for realizing the positioning of the windshield bracket The bracket positioning component, the front bracket positioning component of the midseam plate used for positioning the front bracket of the midseam plate, and the rear bracket positioning component of the midseam plate used for positioning the rear bracket of the midseam plate.

In this way, the welding fixture structure can realize the positioning and installation of the frame main beam tube for the bending beam vehicle sample and the multiple components on it, and after positioning, the welding torch can be directly used to realize the welding and fixing between the components at one time. The mutual position accuracy of each component is reliable and the welding operation is convenient and quick, which saves the cost.

As an optimization, the main beam tube positioning assembly includes a standard square box for positioning the main beam tube with an overall rectangular structure. A number of mounting holes are arranged in a consistent spacing and aperture array. The standard square box used for positioning the main beam tube is fixed on the front side of the three-dimensional installation platform by bolts. The main beam tube positioning assembly also includes a standard square box fixed on the main beam tube positioning The main beam tube positioning block on the side surface of the square box is provided with a main beam tube positioning clip groove for locating the front part of the main beam tube on the main beam tube positioning block.

This is not only convenient for clamping and positioning, but also more convenient for its flexible adjustment to meet the requirements of sample adjustment.

As an optimization, the wind deflector bracket positioning assembly includes two supporting angle irons for positioning the front end accessories of the main beam tube that are arranged at the front end of the upper surface of the three-dimensional installation platform in a right-angled trapezoidal frame structure, and the front end of the main beam tube On each side of the supporting angle iron for accessory positioning, several installation holes are arranged according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform. The hypotenuses of the supporting angle irons for the positioning of the front end accessories of the two main beam tubes are arranged opposite to the left and right outer sides, and the middle and upper parts of the rear side of the two supporting angle irons for the positioning of the front end accessories of the main beam tubes are fixed horizontally and provided with a windshield extending inward. The positioning block of the plate support, the inward end of the positioning block of the wind deflector support is provided with a positioning groove for the wind deflector support, and is used to realize the positioning of the outer end of the wind deflector support.

This is not only convenient for clamping and positioning, but also more convenient for its flexible adjustment to meet the requirements of sample adjustment.

As an optimization, the front bracket positioning assembly of the center seam plate includes two supporting angle irons for positioning the front end accessories of the main beam tube arranged on the front end of the upper surface of the three-dimensional installation platform, and the inner sides of the two supporting angle irons for positioning the front end accessories of the main beam tube The middle part is fixedly provided with a positioning block of the front support of the center seam plate extending backward, and the rear end of the positioning block of the front support of the center seam plate is transversely provided with a positioning hole of the front support of the center seam plate, which is used to pass through the positioning hole of the front support of the center seam plate and the position on the front support of the center seam plate. The lug holes realize the positioning of the front bracket of the seam plate.

This is not only convenient for clamping and positioning, but also more convenient for its flexible adjustment to meet the requirements of sample adjustment.

As an optimization, the positioning assembly for the rear bracket of the mid-seam plate includes two standard square boxes for the positioning of the rear support of the mid-seam plate, which are located on the left and right sides of the middle part of the upper surface of the three-dimensional installation platform; On each side of the box, a number of installation holes are arranged in an array consistent with the spacing and aperture of the installation holes on the three-dimensional installation platform, and they are fixed on the three-dimensional installation platform by bolts. A connecting block for the positioning of the rear support of the center seam plate is fixedly arranged, and a support block for the rear support of the center seam plate is fixedly arranged on the rear side of the middle part of the connecting block for positioning the rear support of the center seam plate, which is located in the center seam The upper surface of the connecting blocks for positioning the back support of the center seam plate at the two sides of the support block of the back plate support is also provided with a rear support positioning block of the center seam plate extending backward, and a rear support of the center seam plate is arranged on the rear upper end of the positioning block of the rear support of the center seam plate The installation shaft positioning groove is used to realize the positioning of the installation shafts on both sides of the rear bracket of the center seam plate.

This is not only convenient for clamping and positioning, but also more convenient for its flexible adjustment to meet the requirements of sample adjustment.

In this way, the process of using the above-mentioned groups of positioning components is as follows: first, support and position the lower surface of the back bracket of the center seam plate on the supporting block of the rear support of the center seam plate, and make the installation shafts on both sides of the rear bracket of the center seam plate fall into the positioning blocks of the rear support of the center seam plate The positioning groove of the installation axis of the rear support of the center seam plate at the upper rear end realizes the positioning of the rear support of the center seam plate in advance; then fit the front end of the main beam tube and the rear side of the standpipe at the corresponding installation positions, and make the front of the main beam tube fall into the main beam tube The main beam tube positioning clip groove on the positioning block realizes the positioning of the front section of the main beam tube, so that the rear of the main beam tube falls into the upper surface of the rear bracket of the center seam plate, and realizes the positioning of the rear section of the main beam tube. Positioning; then attach the inner ends of the two windshield brackets to the corresponding installation positions on the main beam tube and make their outer ends fall into the positioning grooves of the windshield bracket positioning blocks inward to achieve positioning Fit the lower end of the front support of the center seam plate to the corresponding installation position on the main beam tube, and pass the positioning hole on the positioning block of the front support of the center seam plate and the lug hole on the front support of the center seam plate by the bolt to realize the positioning of the front support of the center seam plate. In this way, welding and fixing between the main beam tube and the riser and between the main beam tube and the auxiliary components thereon can be realized at one time by using the welding torch. Moreover, the mutual position accuracy of the components is reliable, and the welding operation is convenient and fast, which saves the cost. At the same time, due to the use of standard square boxes, supporting angle irons, three-dimensional installation platforms and other non-standard positioning components to achieve connection and cooperation, each positioning structure can be flexibly and conveniently adjusted and installed according to needs, making it very suitable for testing It is used when the position of each local component needs to be adjusted in the trial production, which greatly saves the research and development cost. At the same time, some of the non-standard positioning components can realize the positioning of multiple components at the same time, and the structural arrangement is ingenious and ensures the accuracy of mutual positions.

To sum up, the utility model can simplify the welding assembly process, has the advantages of simple operation, low cost, and convenient trial production and adjustment of bending beam car samples.

Description of drawings

Fig. 1 is a front view of a frame welding jig for a curved beam car sample that adopts the structure of the utility model.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a front view of Fig. 1 when in use.

FIG. 4 is a top view of FIG. 1 .

detailed description

The utility model will be further described in detail below in conjunction with a frame welding jig and accompanying drawings that have adopted the structure of the utility model. When describing in the scheme, the state after it is installed on the frame is used as the orientation description benchmark.

As shown in Figures 1-4, a frame welding fixture for a curved beam vehicle sample, the welding fixture includes a three-dimensional mounting platform 1 with a number of mounting holes arranged in an array at fixed intervals on the upper surface and the peripheral side surface, and a set The combined positioning welding fixture structure of the riser, the combined positioning welding fixture structure of the main beam tube and the combined positioning welding fixture structure of the engine suspension mounting plate on the three-dimensional installation platform 1; the combined positioning welding fixture structure of the riser is used to realize the riser 2, The positioning of the direction lock bracket 3, the instrument case bracket 4, the direction lock block 5 and the front cover mounting plate 6; the main beam tube combination positioning welding fixture structure is used to realize the main beam tube 7, the windshield bracket 8, and the front bracket of the center seam plate 9 and the positioning of the rear bracket 10 of the center seam plate; the combined positioning welding fixture structure of the engine suspension mounting plate is used to realize the positioning of the engine suspension mounting plate 11 and the flat fork shaft 12.

In this way, the welding fixture of the above-mentioned scheme can realize the clamping and positioning between the standpipe, the main beam tube, the engine suspension mounting plate and the auxiliary components on it at the same time, so that after positioning, the welding torch can be directly used to realize the welding between each component at one time. The welding between them is fixed. The mutual position accuracy of each component is reliable and the welding operation is convenient and quick, which saves the cost.

Wherein, the riser combined positioning welding fixture structure includes a riser positioning component, a direction lock bracket positioning component, an instrument case bracket positioning component, a direction lock block positioning component and a front cover mounting plate positioning component;

The standpipe positioning assembly includes a standard square box 13 for standpipe positioning with a rectangular structure as a whole, and the standard square box 13 for standpipe positioning is used on each side according to the same spacing and distance as the installation holes on the three-dimensional installation platform. The aperture array is arranged with several installation holes, and the standard square box for standpipe positioning is fixed on the middle part of the front side of the three-dimensional installation platform 1 by bolts and extended upwards. The standpipe positioning assembly also includes a standard square box 13 fixed on the standpipe positioning. The standard angler 14 for standpipe positioning on the upper surface, the standard angler 14 for standpipe positioning includes a fixed block and a rotating block each having a hinged end and an opening and closing end, and the hinged ends of the fixed block and the rotating block can be rotatably hinged In addition, a rotation angle positioning pin for realizing rotation angle positioning is provided at the hinge, and several installation holes are arranged on the fixed block and the rotation block according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform 1. The opening and closing end of the fixed block of the standard angler 14 for standpipe positioning is arranged forward and fixed horizontally on the upper surface of the standard square box 13 for standpipe positioning by bolts, and the middle part of the upper surface of the rotating block of the standard angler 14 for standpipe positioning is A standpipe positioning round platform 15 is fixedly arranged upward, and the diameter of the standpipe positioning round platform 15 matches the outer diameter of the lower end of the standpipe, and a standpipe positioning column 16 matching the inner diameter of the standpipe is arranged on the coaxial axis of the standpipe positioning round platform, The upper end of the standpipe positioning column 16 can slide up and down with a disc-shaped standpipe pressing and fixing block 17 for pressing the standpipe after positioning;

The direction lock block locating assembly comprises a direction lock block locating block 18, and the direction lock block locating block 18 is fixed on the corresponding position in front of the standpipe positioning round table 15 on the rotating block upper surface of the standpipe positioning standard angler 14, and the direction lock block The rear upper end of the positioning block 18 has a direction locking block positioning groove for abutting against the front lower end surface of the direction locking block 5 for positioning;

The front mask mounting plate positioning assembly includes a vertically arranged front mask mounting plate positioning connecting plate 19, and the lower end of the front mask mounting plate positioning connecting plate 19 is fixed on the right side of the standpipe positioning standard square box 13 by bolts. At the top position on the surface, a front mask mounting plate positioning block 20 is fixedly arranged on the upper left side of the connecting plate 19 for positioning the front mask mounting plate, and the front mask mounting plate positioning block 20 has a direction locking block positioning block 18 The upper part, and the upper surface of this part is correspondingly provided with a front mask mounting plate positioning clip groove for clamping and positioning the front mask mounting plate 6;

The positioning assembly of the instrument case bracket includes a positioning support angle iron 21 for the instrument case support with an overall right-angled trapezoidal frame structure, and each side of the positioning support angle iron 21 for the instrument case support is consistent with the mounting holes on the three-dimensional installation platform 1 A number of installation holes are arranged in an array of spacing and apertures. The lower end of the positioning support angle iron 21 of the instrument case bracket is fixed on the left side of the upper front part of the three-dimensional installation platform 1 by bolts. The hypotenuse of the positioning support angle iron 21 of the instrument case support is arranged outwardly And the right side of the upper part is fixedly provided with a connecting block 22 for installing an instrument case bracket extending rightward to the position of the rear upper end of the standpipe positioning column, and the position of the rear upper end of the corresponding standpipe positioning column is fixed on the connecting block 22 for the installation of the instrument case support. An instrument case bracket positioning lug 23 extending forward and downward is provided. An instrument case bracket positioning hole is arranged on the instrument case bracket positioning lug 23. The front and lower sides of the instrument case bracket positioning lug 23 are used for connecting with the instrument case The rear lower side of the bracket is fitted and positioned and can be fixed by the positioning pin passing through the positioning hole of the instrument case bracket and the instrument case mounting hole on the instrument case support 4;

The directional lock bracket positioning assembly includes a directional lock bracket positioning support angle iron 25 with a right-angled trapezoidal frame structure as a whole, and each side of the direction lock bracket positioning support angle iron 25 is in accordance with the installation holes on the three-dimensional installation platform. A number of installation holes are arranged in the spacing and aperture arrays. The lower end of the direction lock bracket positioning support angle iron 25 is fixed on the right side of the front part of the three-dimensional installation platform by bolts. The left side is fixedly provided with a standard angler 26 for positioning the direction lock bracket. The standard angler 26 for positioning the direction lock bracket includes a fixed block and a rotating block each having a hinged end and an opening and closing end. The fixed block and the rotating block The hinge end of the hinge can be rotatably hinged, and a rotation angle positioning pin for realizing the rotation angle positioning is provided at the hinge. The fixed block and the rotating block are arranged according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform. Mounting holes, the fixed block of the standard angler 26 for the direction lock bracket positioning is vertically arranged and the opening and closing end is forward and fixed on the left side surface of the direction lock bracket positioning support angle iron 25 by the bolt horizontally; the direction lock The left side of the rotating block of the standard angler 26 for support positioning is provided with a direction lock support positioning block 27 facing the upper end position of the standpipe positioning column, and a direction lock support positioning groove is provided on the left side of the direction lock support positioning block 27. To realize the positioning of the direction lock bracket 3.

In this way, when in use, first adjust the angle of the standpipe positioning standard angler to the required angle, and then insert the standpipe into the standpipe positioning column so that the lower end and the standpipe positioning round table are abutted and supported to realize the standpipe Then the upper end of the standpipe is completely fixed by the standpipe compression fixing block; then the upper end of the direction lock block is attached to the installation position of the lower end of the standpipe, and the lower end surface of the direction lock block is abutted against the direction lock The positioning is realized in the direction lock block positioning groove on the block positioning block; then the rear end of the front mask mounting plate is attached to the installation position on the front side of the standpipe, and the front lower part of the front mask mounting plate is clamped to the positioning block of the front mask mounting plate The positioning clip groove of the front cover mounting plate realizes its positioning; and then the front lower end of the instrument case bracket is abutted against the corresponding installation position at the upper end of the standpipe, so that the rear lower side of the instrument case bracket and the front lower side of the positioning lug of the instrument case bracket are affixed. Position and fix by positioning pins through the positioning hole of the instrument case bracket and the instrument case mounting hole on the instrument case bracket; then adjust the angle of the direction lock bracket positioning with a standard angler to the required angle, and then turn the direction lock bracket The left side and the right side of the upper end of the column fit together at the corresponding installation positions, and the right outer end of the direction lock bracket falls into the direction lock bracket positioning groove of the direction lock bracket positioning block to realize positioning. Like this, just can adopt welding gun one-time to realize the welding fixing of component such as opposite standpipe and the direction lock bracket on it, instrument case support, direction lock block and front cover mounting plate. The mutual position accuracy of each component is reliable and the welding operation is convenient and quick, which saves the cost. At the same time, due to the use of standard square boxes, supporting angle irons, standard anglers, three-dimensional installation platforms and other non-standard positioning components to achieve connection and cooperation, each positioning structure can be flexibly and conveniently adjusted and installed according to needs, making it very It is suitable for use when trial production of samples needs to adjust the position of local components of each component, which greatly saves the cost of research and development. At the same time, some of the non-standard positioning components can realize the positioning of multiple components at the same time, and the structural arrangement is ingenious and ensures the accuracy of mutual positions.

Wherein, the main beam tube combination positioning welding fixture structure includes a main beam tube positioning assembly, a wind deflector support positioning assembly, a center seam plate front support positioning assembly and a center seam plate rear support positioning assembly;

The main beam tube positioning assembly includes a standard square box 28 for the positioning of the main beam tube with a rectangular structure as a whole, and each side of the standard square box 28 for the positioning of the main beam tube is consistent with the installation holes on the three-dimensional installation platform. A number of installation holes are arranged in the spacing and aperture array, and the main beam tube positioning standard square box 28 is fixed on the front side of the three-dimensional installation platform 1 by bolts. The main beam tube positioning block 29 on the side surface of the standard square box 28, the main beam tube positioning block 29 is provided with a main beam tube positioning clip groove for positioning the front part of the main beam tube;

The positioning component of the windshield bracket includes two supporting angle irons 30 for the positioning of the front end attachments of the main beam tube, which are arranged on the front end of the upper surface of the three-dimensional installation platform in a right-angled trapezoidal frame structure. A number of installation holes are arranged on each side of the supporting angle iron 30 according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform, and the lower end of the supporting angle iron 30 is fixed on the three-dimensional installation platform 1 by bolts The hypotenuses of the two supporting angle irons 30 for the positioning of the front end accessories of the main beam tube are arranged relative to the left and right outer sides (the supporting angle iron for positioning the front end accessories of the main beam tube on the left side during implementation is the same as the positioning supporting angle iron for the aforementioned instrument case bracket Components to simplify the structure), two supporting angle irons for the positioning of the front end accessories of the main beam tube, and the middle and upper part of the rear side are fixed horizontally with a windshield bracket positioning block 31 extending inwardly, and the windshield bracket positioning block 31 faces One end is provided with a wind deflector bracket positioning groove and is used to realize the positioning of the outer end of the wind deflector bracket 8;

The positioning assembly of the front bracket of the center seam plate includes two supporting angle irons 30 for positioning the front end accessories of the main beam tube arranged on the front end of the upper surface of the three-dimensional installation platform, and the middle part of the inner surface of the two supporting angle irons 30 for positioning the front end accessories of the main beam tube Each position is fixedly provided with a positioning block 32 of the front support of the center seam plate extending backward, and the rear end of the front support positioning block 32 of the center seam plate is transversely provided with a positioning hole of the front support of the center seam plate, which is used to pass through the positioning hole of the front support of the center seam plate and the front support of the center seam plate by the bolt The lug hole realizes the positioning of the front bracket 9 of the seam plate;

The positioning assembly for the rear bracket of the mid-seam plate includes two standard square boxes 33 for the positioning of the rear support of the mid-seam plate, which are located on the left and right sides of the middle part of the upper surface of the three-dimensional installation platform and are in a rectangular structure as a whole; On each side, a number of installation holes are arranged according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform, and are fixed on the three-dimensional installation platform 1 by bolts. A connecting block 34 for the positioning of the back support of the center seam plate is fixed horizontally, and a support block for the rear support of the center seam plate is fixedly arranged on the rear side of the middle part of the connecting block 34 for positioning the rear support of the center seam plate. 35. The upper surface of the connecting blocks 34 for the positioning of the rear support of the central seam plate located on both sides of the support block 35 of the central seam plate is respectively provided with a rearward support positioning block 36 of the central seam plate, and the rear support positioning block 36 of the central seam plate The upper end is provided with a positioning groove for installing the shaft of the back bracket of the mid-seam plate, and is used to realize the positioning of the mounting shafts on both sides of the back bracket 10 of the mid-seam plate.

In this way, when in use, the lower surface of the back support of the center seam plate is first supported and positioned on the support block of the back support of the center seam plate, and the installation shafts on both sides of the rear support of the center seam plate fall into the rear upper end of the center seam plate rear bracket positioning block The positioning groove of the installation shaft realizes the positioning of the rear support of the center seam plate in advance; then fit the front end of the main beam tube and the rear side of the standpipe to the corresponding installation position, and make the front of the main beam tube fall into the main beam tube on the positioning block of the main beam tube In the positioning clip groove, the positioning of the front section of the main beam tube is realized, so that the rear of the main beam tube falls into the upper surface of the rear bracket of the center seam plate, and the positioning of the rear section of the main beam tube is realized; Fit the inner ends of the windshield brackets to the corresponding installation positions on the main beam tube and make their outer ends fall into the positioning grooves of the windshield bracket inwards of the positioning block of the windshield bracket to achieve positioning; attach the lower end of the front bracket of the center seam plate to It is connected to the corresponding installation position on the main beam tube, and the positioning of the front bracket of the center seam plate is realized by the bolt passing through the positioning hole on the positioning block of the front bracket of the center seam plate and the lug hole on the front bracket of the center seam plate. In this way, welding and fixing between the main beam tube and the riser and between the main beam tube and the auxiliary components thereon can be realized at one time by using the welding torch. Moreover, the mutual position accuracy of the components is reliable, and the welding operation is convenient and fast, which saves the cost. At the same time, due to the use of standard square boxes, supporting angle irons, three-dimensional installation platforms and other non-standard positioning components to achieve connection and cooperation, each positioning structure can be flexibly and conveniently adjusted and installed according to needs, making it very suitable for testing It is used when the position of each local component needs to be adjusted in the trial production, which greatly saves the research and development cost. At the same time, some of the non-standard positioning components can realize the positioning of multiple components at the same time, and the structural arrangement is ingenious and ensures the accuracy of mutual positions.

Wherein, the combined positioning welding fixture structure of the engine suspension mounting plate includes an engine suspension mounting plate positioning assembly and a flat fork shaft positioning assembly;

The positioning assembly of the engine suspension mounting plate includes a standard square box 37 for the engine rear upper suspension positioning that is located in the middle of the upper surface of the three-dimensional installation platform 1 and is a rectangular body structure. The standard square boxes 37 for the engine rear upper suspension positioning On the side, several installation holes are arranged according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform 1, and are fixed on the three-dimensional installation platform 1 by bolts. After being connected with the upper suspension positioning block 38 after the engine, the left and right sides of the upper suspension positioning block 38 behind the engine each have a lug 39 for the upper suspension positioning of the engine protruding from the upper rear, and the upper suspension positioning lug 39 for the upper suspension positioning after the two engines. The distance between the outer sides of the upper end is less than the distance between the left and right sides of the engine suspension mounting plate, and the upper end of the engine rear upper suspension positioning lug 39 is relatively penetrating with the upper end of the engine rear upper suspension positioning lug hole. The two engine rear upper suspension positioning An engine rear upper suspension positioning shaft 40 is movably penetrated through the lug holes, and the engine rear upper suspension positioning shaft 40 is used to insert two corresponding engine rear upper suspension positioning on the engine suspension mounting plate 11 by both ends. Holes for positioning;

The engine suspension mounting plate positioning assembly also includes a standard square box 41 for positioning the fixed shaft holes at the rear of the main bracket that is located in the middle of the rear end of the upper surface of the three-dimensional installation platform and is a rectangular body structure as a whole. The fixed shaft holes at the rear of the main bracket are positioned On each side of the standard square box 41, several installation holes are arranged according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform, and are fixed on the three-dimensional installation platform 1 by bolts. The front side of the square box 41 is fixedly connected with the main bracket rear fixed shaft hole positioning block 42 by bolts, and the left and right ends of the main bracket rear fixed shaft hole positioning block 42 respectively have a main bracket rear fixed shaft protruding forward. Hole positioning lugs 43, the distance between the outer sides of the fixed shaft hole positioning lugs 43 at the rear of the two main brackets is less than the distance between the left and right sides of the engine suspension mounting plate, the front end of the fixed shaft hole positioning lugs 43 at the rear of the main bracket An ear hole for positioning the fixed shaft hole at the rear of the main bracket is relatively penetrating in the transverse direction, and a positioning shaft 44 for the fixed shaft hole at the rear of the main bracket is movably inserted between the two lug holes for positioning the fixed shaft hole at the rear of the main bracket. The fixed shaft hole positioning shaft 44 at the rear of the main bracket is used for positioning by inserting the two ends into the corresponding two fixed shaft holes at the rear of the main bracket on the engine suspension mounting plate;

The flat fork shaft positioning assembly includes two standard angle irons 45 for positioning the flat fork shaft located on the left and right sides of the rear end of the upper surface of the three-dimensional installation platform 1 and arranged symmetrically. The trapezoidal frame structure and a number of installation holes are arranged on each side according to the same spacing and aperture array as the installation holes on the three-dimensional installation platform. The lower end of the standard angle iron 45 is used for the positioning of the flat fork axis. The side is arranged in the rearward direction, and the middle part of the inner side of the standard angle iron 45 for the positioning of the two flat fork shafts is fixedly provided with a flat fork shaft positioning block 46 extending forward, and the distance between the two flat fork shaft positioning blocks 46 is greater than that of the engine suspension The width of the left and right sides of the mounting plate, the front upper ends of the two flat fork shaft positioning blocks 46 are provided with flat fork shaft positioning grooves and are used to realize the positioning of the two ends of the flat fork shaft.

In this way, when in use, the front upper end of the engine suspension mounting plate is first overlapped and positioned to the position of the rear upper end of the main beam tube, and then both sides of the front and lower end of the engine suspension mounting plate enter between the two engine rear upper suspension positioning lugs. The engine rear upper suspension positioning shaft passes through the two engine rear upper suspension positioning lug holes and the engine rear upper suspension positioning hole at the front and lower end of the engine suspension mounting plate to realize the positioning of the front and lower end of the engine suspension mounting plate; then fix the shaft hole by the rear of the main bracket The positioning shaft passes through the two fixed shaft holes at the rear of the main bracket on the engine suspension mounting plate and the corresponding lug holes for positioning the fixed shaft holes at the rear of the main bracket to realize the positioning of the rear lower end of the engine suspension mounting plate; Pass through the flat fork shaft hole on the engine suspension mounting plate and place both ends of the flat fork shaft in the flat fork shaft positioning grooves at the front upper ends of the two flat fork shaft positioning blocks, so that the flat fork shaft can be positioned by the flat fork at the same time The shaft and the positioning shaft of the upper suspension at the rear of the engine and the positioning shaft of the fixed shaft hole at the rear of the main bracket realize the three-point positioning of the engine suspension mounting plate, and completely determine the spatial position of the engine suspension mounting plate. In this way, the welding and fixing between the engine suspension mounting plate and the main beam tube and between the engine suspension mounting plate and the flat fork shaft can be realized at one time by using a welding torch. The mutual position accuracy of each component is reliable and the welding operation is convenient and quick, which saves the cost. At the same time, due to the use of standard square boxes, supporting angle irons, three-dimensional installation platforms and other non-standard positioning components to achieve connection and cooperation, each positioning structure can be flexibly and conveniently adjusted and installed according to needs, making it very suitable for testing It is used when the position of each local component needs to be adjusted in the trial production, which greatly saves the research and development cost. At the same time, some of the non-standard positioning components can realize the positioning of multiple components at the same time, and the structural arrangement is ingenious and ensures the accuracy of mutual positions.

Claims (5)

1. a beam bending bicycle sample vehicle frame main beam pipe integrated positioning weld jig structure, it is characterized in that, comprise for realize main-beam pipe location main-beam pipe positioning component, for realize deep bead support location deep bead support positioning component, for realize center joint plate fore-stock location center joint plate fore-stock positioning component and for realize center joint plate after-poppet location center joint plate after-poppet positioning component.

2. beam bending bicycle sample vehicle frame main beam pipe integrated positioning weld jig structure as claimed in claim 1, it is characterized in that, described main-beam pipe positioning component comprises the main-beam pipe 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 main-beam pipe location, main-beam pipe location standard square chest is by being bolted to the anterior side of three-dimensional mounting platform, described main-beam pipe positioning component also comprises the main-beam pipe locating piece that is fixed on main-beam pipe location standard square chest side surface, main-beam pipe locating piece is provided with a main-beam pipe location clip slot for positioning main-beam pipe forward position.

3. beam bending bicycle sample vehicle frame main beam pipe integrated positioning weld jig structure as claimed in claim 1, it is characterized in that, described deep bead support positioning component comprises the main-beam pipe frontal attachments location support angle that left and right is oppositely disposed in the rectangular ladder-shaped frame structure of two entirety of three-dimensional mounting platform upper surface front position, 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 described main-beam pipe frontal attachments location, support angle lower end, main-beam pipe frontal attachments location is by being bolted to three-dimensional mounting platform, support angle hypotenuse relative left and right, two main-beam pipe frontal attachments location lateral direction is arranged, position, support angle trailing flank middle and upper part, two main-beam pipe frontal attachments location is laterally fixedly installed the deep bead support positioning block that inside side extends, the inside one end of deep bead support positioning block is provided with deep bead support locating slot and location for realizing deep bead support outer end.

4. beam bending bicycle sample vehicle frame main beam pipe integrated positioning weld jig structure as claimed in claim 3, it is characterized in that, described center joint plate fore-stock positioning component comprises two main-beam pipe frontal attachments location support angle that left and right is oppositely disposed in three-dimensional mounting platform upper surface front position, two main-beam pipe frontal attachments location support angle medial surface medium positions are respectively fixedly installed one piece of center joint plate fore-stock locating piece extended back, center joint plate fore-stock locating piece rear end is laterally run through and is provided with center joint plate fore-stock locating hole and location for realizing center joint plate fore-stock through the earhole on center joint plate fore-stock locating hole and center joint plate fore-stock by latch.

5. beam bending bicycle sample vehicle frame main beam pipe integrated positioning weld jig structure as claimed in claim 1, it is characterized in that, described center joint plate after-poppet positioning component, comprises the center joint plate after-poppet location standard square chest of two the rectangular body structures of entirety being positioned at the three-dimensional mounting platform upper surface middle part left and right sides, the each side of standard square chest, center joint plate after-poppet location 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 three-dimensional mounting platform, laterally a center joint plate after-poppet location contiguous block is fixedly installed between standard square chest upper end, two center joint plate after-poppet location, in the middle part of the contiguous block of center joint plate after-poppet location, trailing flank is fixedly installed one for realizing the center joint plate after-poppet back-up block to center joint plate after-poppet lower surface supporting and location, the center joint plate after-poppet location contiguous block upper surface being positioned at center joint plate after-poppet back-up block two side position is also respectively provided with a center joint plate after-poppet locating piece extended back, after center joint plate after-poppet locating piece, upper end is provided with a center joint plate after-poppet installation shaft locating slot and location for realizing center joint plate after-poppet both sides installation shaft.