CN212384921U

CN212384921U - Positioning welding device for buckling vehicle body and chassis

Info

Publication number: CN212384921U
Application number: CN202020914649.5U
Authority: CN
Inventors: 赵永录; 赵志龙; 蔡国锐; 赵久永; 郑春辉
Original assignee: King Long United Automotive Industry Suzhou Co Ltd
Current assignee: King Long United Automotive Industry Suzhou Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-22
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a positioning welding device for buckling a vehicle body and a chassis, which comprises a track and a sliding positioning device; the tracks are parallel tracks; a plurality of sliding positioning devices are arranged on the track; the sliding positioning device comprises a sliding bottom frame, a positioning frame arranged on the rotating shaft and a telescopic positioning pin; the sliding bottom frame is arranged on the track; the lower part of the sliding underframe is provided with a track wheel set which rolls on the track; the upper part of the sliding underframe is provided with an underframe beam; an underframe cross beam is provided with an underframe limiting pin hole; the rotating shaft is provided with a positioning frame which is arranged on the sliding bottom frame across the track and rotates relative to the sliding bottom frame; the rotating shaft is provided with a positioning frame, and positioning support legs are arranged at two end parts of the positioning frame close to the track; the upper end part of the positioning support leg is provided with a telescopic positioning pin; the side of the track is provided with a sliding limiting device. The chassis is accurately positioned on the light rail track, the chassis body is flexibly slid to realize accurate positioning and free adjustment of the welding and buckling of the chassis body, the working efficiency is improved, the labor intensity is reduced, and the investment cost is greatly reduced through convenient operation and control.

Description

Positioning welding device for buckling vehicle body and chassis

Technical Field

The utility model relates to a positioning welding device that is used for automobile body and chassis location and lock.

Background

When the chassis module and the vehicle body module are buckled and folded, the front module and the rear module of the chassis have dimensional requirements on the straightness, flatness and wheel base position, the front module and the rear module of the chassis are positioned by the rails to obtain the straightness and flatness of the front module and the rear module, and the positioning device on the rails is quickly and reliably positioned in the auxiliary surface positioning holes under the main girder of the module vehicle frame, so that the problems of sliding card deformation, unstable derailment, unsynchrony between the front module and the rear module and the rails are straight and the like can be caused.

Disclosure of Invention

The utility model discloses the purpose is: the chassis accurate positioning structure is used on a light rail, and the chassis body welding and buckling accurate positioning and free adjustment are realized by the flexible vehicle body buckling and sliding device, so that the chassis positioning vehicle body buckling precision is realized, the working efficiency is improved, the labor intensity is reduced, and the investment cost is greatly reduced by convenient operation and control.

The technical scheme of the utility model is that: a positioning welding device for buckling a vehicle body and a chassis comprises a track and a sliding positioning device; the tracks are parallel tracks; a plurality of sliding positioning devices are arranged on the track; the sliding positioning device comprises a sliding bottom frame, a rotating shaft upper mounting positioning frame and a telescopic positioning pin; the sliding underframe is arranged on the track; the lower part of the sliding underframe is provided with a track wheel set which rolls on the track; the upper part of the sliding underframe is provided with an underframe crossbeam; the underframe crossbeam is provided with an underframe limiting pin hole; the rotating shaft is provided with a positioning frame which is arranged on the sliding bottom frame in a manner of crossing the track and rotates relative to the sliding bottom frame; a rotating limiting pin connecting plate is arranged at the lower part of the rotating shaft upper mounting positioning frame; a rotating limiting pin hole is formed in the rotating limiting pin connecting plate; the underframe limiting pin hole, the rotation limiting pin hole and the limiting pin are matched to limit the rotation of the positioning frame arranged on the rotating shaft; positioning support legs are arranged at two end parts of the positioning frame arranged on the rotating shaft and close to the track; the upper end part of the positioning support leg is provided with a telescopic positioning pin; the telescopic positioning pin is telescopic and slides relative to the positioning support leg; and a sliding limiting device is arranged on the side edge of the track.

Preferably, the rotating shaft is provided with a positioning frame which is movably connected with the sliding underframe.

Preferably, the telescopic positioning pin is arranged inside the positioning support leg; and the outer edge of the top of the telescopic positioning pin is provided with a limiting convex edge.

Preferably, the telescopic positioning pin and the positioning support leg are limited by a pin shaft and a pin hole.

Preferably, the track is a T-shaped wheel positioning light rail.

Preferably, the side edge of the track wheel set is provided with an anti-derailing baffle.

The utility model has the advantages that:

1. the positioning structure is detachable, is convenient to assemble, change different vehicle types, switch and position, and is suitable for buckling chassis positioning vehicle bodies of all vehicle types;

2. the method has the advantages that the straightness accuracy, the flatness accuracy and the wheelbase size accuracy are ensured through quick positioning, and the consistency of manufacturing key parts of the vehicle body when the vehicle body chassis is buckled is ensured;

3. the off-line device is quickly separated from the chassis after the buckling and welding of the chassis body are finished, so that the buckling problem of the body-buckling line body cannot exist in normal circulation;

4. the automatic trolley is suitable for manual step remote control electric hoist operation control, has less investment cost compared with an electric control automatic trolley, avoids fund waste, reduces the investment cost, and also solves the problems that the chassis module is positioned and fastened, and the vehicle body is quickly and accurately carried out synchronously with a line body and flexibly operated;

5. the manual cart linearly travels along the light rail track, so that the investment cost is reduced, and the operation is simple. The waste of the cost of investment equipment at regular intervals in the positioning of the original manufactured chassis is avoided.

Drawings

The invention will be further described with reference to the following drawings and examples:

FIG. 1 is a schematic front view of a positioning and welding device for fastening a vehicle body and a chassis according to the present disclosure;

FIG. 2 is a left side view structural schematic diagram of a positioning welding device for buckling a vehicle body and a chassis;

FIG. 3 is a schematic top view of a positioning and welding device for fastening a vehicle body and a chassis according to the present disclosure;

FIG. 4 is a schematic front view of a positioning frame mounted on a rotating shaft of the positioning welding device for buckling a vehicle body and a chassis;

FIG. 5 is a right side view structural schematic diagram of a positioning frame mounted on a rotating shaft of the positioning welding device for buckling a vehicle body and a chassis;

FIG. 6 is a schematic top view of a positioning frame mounted on a rotating shaft of the positioning welding device for buckling a vehicle body and a chassis;

FIG. 7 is a schematic structural diagram of a front module and a rear module of an assembly chassis of the positioning welding device for buckling a vehicle body and the chassis;

fig. 8 is a schematic top view of a chassis front module and a chassis rear module of the positioning welding device for fastening a vehicle body and a chassis.

Detailed Description

Example (b):

as shown in fig. 1-8, a positioning welding device for buckling a vehicle body and a chassis comprises a track 1 and a sliding positioning device 2; the track 1 is a parallel track; the track is a T-shaped wheel positioning light track, so that the requirements on straightness and flatness are met, and the precision deviation is guaranteed to be within a range of 1 mm; a plurality of sliding positioning devices 2 are arranged on the track 1; the sliding positioning device 2 comprises a sliding bottom frame 21, a rotating shaft upper mounting positioning frame 22 and a telescopic positioning pin 3; the sliding underframe 21 is arranged on the track 1; the lower part of the sliding underframe 21 is provided with a track wheel set 23 which rolls on the track 1 to drive the sliding positioning device 2 to slide on the track 1, so that the axle distance of the chassis module can be stretched in the X direction with different axle distances; the side edge of the track wheel set 23 is provided with an anti-derailing baffle plate 24 to prevent derailing when sliding along the track; the upper part of the sliding underframe 21 is provided with an underframe crossbeam 25; the underframe cross beam 25 is provided with an underframe limiting pin hole; the rotating shaft upper-mounted positioning frame 22 is arranged on the sliding bottom frame 21 in a manner of crossing the track and rotates relative to the sliding bottom frame 21; the rotating shaft is provided with a positioning frame 22 which is connected with the sliding underframe 21 by bolts and nuts, and the rotating shaft is provided with the positioning frame 22 which can switch different vehicle types with variable width and variable size in the Y direction to position and control the chassis; a rotary limiting pin connecting plate 26 is arranged at the lower part of the rotating shaft upper mounting positioning frame 22; the rotation limiting pin connecting plate 26 is provided with a rotation limiting pin hole 27; the underframe limiting pin hole and the rotation limiting pin hole 27 are matched with the limiting pin 4 to limit the rotation of the positioning frame 22 arranged on the rotating shaft; the two end parts of the positioning frame 22 arranged on the rotating shaft and close to the track are provided with positioning support legs 28; the upper end part of the positioning support leg 28 is provided with a telescopic positioning pin 3; the telescopic positioning pin 3 is arranged inside the positioning support leg 28; the outer edge of the top of the telescopic positioning pin 3 is provided with a limiting convex edge 31; the telescopic positioning pin 3 and the positioning support legs 28 are limited by the pin shaft 5 and the pin hole, and the telescopic positioning pin 3 can be replaced to adapt to vehicle types with different heights and size changes in the Z direction to position and control the chassis; when the rotating shaft upper positioning frame 22 is turned to the vertical position, the chassis limiting pin hole 26, the rotation limiting pin hole 28 and the limiting pin 4 are matched to fix the rotating shaft upper positioning frame 22, and the telescopic positioning pin 3 is fixedly clamped into the positioning hole of the chassis module vertically upwards; and a sliding limiting mechanism is arranged on the side edge of the track 1 to adjust the wheelbase size of the chassis vehicle type.

Due to the fact that the quality is guaranteed, the efficiency is improved, the buckling line body of the vehicle body is integrally planned and constructed through the current buckling vehicle body station transformation chassis module positioning vehicle body, the capacity is met, capital is not wasted, investment cost is reduced, and the fast and accurate positioning method for the chassis positioning rail is synchronously promoted with other work production beats, so that the capacity beat requirement of a buckling vehicle body collinear process is met. In order to realize a flexible and convenient control method and a manufacturing scheme for realizing the positioning, buckling and welding of the chassis module of the upper track hoisted by remotely controlling the chassis module under the condition of meeting the requirement of capacity, the method specifically comprises the following steps:

1. the sliding positioning devices are placed on two parallel tracks, the lower part of a front chassis module 6 is positioned by adopting a front sliding positioning device 2 and a rear sliding positioning device 2, the lower part of a rear chassis module 7 is positioned by adopting the front sliding positioning device 2 and the rear sliding positioning device 2, a telescopic positioning pin 3 of the sliding positioning device 2 is vertically clamped into a positioning hole of the chassis module upwards, the two sliding positioning devices 2 under the front chassis module and the two sliding positioning devices 2 under the rear chassis module are fixed in position by utilizing a sliding limiting mechanism at the side edge of the track according to the wheelbase of a vehicle type, the wheelbase of the chassis module can be stretched in the X direction with different wheelbases, a positioning frame 22 arranged on a rotating shaft can be replaced to adjust the size change in the Y direction, the telescopic positioning pin 3 can be replaced to adjust the size change in the Z direction, a positioning structure can be adjusted according to the sizes of different vehicle types, and the, the positioning structure can be disassembled and assembled, is convenient for replacing different vehicle types for switching and positioning, and is suitable for buckling chassis positioning vehicle bodies of all vehicle types;

2. after the front chassis module 6 and the rear chassis module 7 are positioned, all the air in the air bags of the front chassis module and the rear chassis module is discharged, the sliding positioning device 2 positions the frame to stably ensure the horizontal and linear requirements, and the tire is supported by the auxiliary ground and is not supported;

3. hoisting a vehicle body framework assembly, buckling a front chassis module 6 and a rear chassis module 7, ensuring that the welding position of the vehicle body framework is enough, starting welding a key connection position, quickly inflating an airbag after complete welding, supporting a vehicle frame by a ground supporting point trace by a tire, extracting a pin shaft 5 of a telescopic positioning pin 3 at the moment, retracting the telescopic positioning pin 3 into a positioning support leg 28 on a rotating shaft upper mounting positioning frame 22, extracting a limit pin 4 of the rotating shaft upper mounting positioning frame 22 to enable the rotating shaft upper mounting positioning frame 22 to be overturned to be horizontal by 90 degrees, separating and moving a sliding positioning device 2 from a chassis of the vehicle body, and completing the transfer of the vehicle to the next side skin manufacturing station.

The chassis module of this case is fixed a position fast accurately, combines the gasbag to go up and down under the complete natural state condition of gasbag about 80mm scope, and slip positioner 2 guarantees that module frame location level and front and back module straightness accuracy require deviation within 1 mm. After the positioning welding is completed, the frame can be lifted by an inflatable airbag and is rigidly connected with the suspension, the supporting surface of the telescopic positioning pin 3 of the sliding positioning device 2 is slightly separated from the auxiliary surface of the frame, the positioning frame 22 arranged on the rotating shaft is pushed to turn over to be horizontal, the sliding positioning device 2 is completely separated from the chassis of the vehicle body, and the compact structure is designed in the space of the positioning supporting point to realize the action of separating from the chassis of the vehicle. The overturning limiting structure of the positioning frame 22 arranged on the rotating shaft also realizes that the vehicle can pass through within the minimum 200mm of the ground clearance without interference, the interchangeability of the rotating movable structure is not influenced, and the investment is very small.

The rail can limit and guarantee the requirements of the levelness and the straightness between the front module and the rear module of the chassis, and the dimensional deviation in the X direction is guaranteed by a rail side sliding limiting mechanism within the range of 1 mm;

the sliding positioning device can limit and ensure the positioning of the horizontal, height and width dimensions, and the deviation of the dimension in the direction of Y, Z is ensured by a telescopic positioning pin and a positioning frame arranged on the rotating shaft within the range of 1 mm;

the chassis vehicle model wheelbase size is limited by the rail side sliding limiting mechanism to determine the length distance size deviation, and the special process positioning structure can be adjusted to be combined with the chassis workshop to ensure the technical requirements.

Therefore, the corresponding gap between the wheel rim and the rail can compensate the gap within the deviation range of 0.5mm required by the straightness of the rail, and the width dimension of the positioning device can be adjusted on the T-shaped wheel positioning rail for micro-adjustment and repair.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a fixed-position welding device of automobile body and chassis lock which characterized in that: comprises a track and a sliding positioning device; the tracks are parallel tracks; a plurality of sliding positioning devices are arranged on the track; the sliding positioning device comprises a sliding bottom frame, a rotating shaft upper mounting positioning frame and a telescopic positioning pin; the sliding underframe is arranged on the track; the lower part of the sliding underframe is provided with a track wheel set which rolls on the track; the upper part of the sliding underframe is provided with an underframe crossbeam; the underframe crossbeam is provided with an underframe limiting pin hole; the rotating shaft is provided with a positioning frame which is arranged on the sliding bottom frame in a manner of crossing the track and rotates relative to the sliding bottom frame; a rotating limiting pin connecting plate is arranged at the lower part of the rotating shaft upper mounting positioning frame; a rotating limiting pin hole is formed in the rotating limiting pin connecting plate; the underframe limiting pin hole, the rotation limiting pin hole and the limiting pin are matched to limit the rotation of the positioning frame arranged on the rotating shaft; positioning support legs are arranged at two end parts of the positioning frame arranged on the rotating shaft and close to the track; the upper end part of the positioning support leg is provided with a telescopic positioning pin; the telescopic positioning pin is telescopic and slides relative to the positioning support leg; and a sliding limiting device is arranged on the side edge of the track.

2. The positioning welding device for buckling the vehicle body and the chassis as claimed in claim 1, wherein: the rotating shaft is provided with a positioning frame which is movably connected with the sliding underframe.

3. The positioning welding device for buckling the vehicle body and the chassis as claimed in claim 1, wherein: the telescopic positioning pin is arranged inside the positioning support leg; and the outer edge of the top of the telescopic positioning pin is provided with a limiting convex edge.

4. The positioning welding device for buckling the vehicle body and the chassis as claimed in claim 1, wherein: the telescopic positioning pin and the positioning support leg are limited by a pin shaft and a pin hole.

5. The positioning welding device for buckling the vehicle body and the chassis as claimed in claim 1, wherein: the track is a T-shaped wheel positioning light rail.

6. The positioning welding device for buckling the vehicle body and the chassis as claimed in claim 1, wherein: and the side edge of the track wheel set is provided with an anti-derailing baffle.