CN-224209355-U - Special frock of lifting support welding

Abstract

The utility model relates to the field of tools for welding lifting brackets, in particular to a tool special for welding the lifting brackets, which comprises a first chassis upright post base and a second chassis upright post base, wherein chassis supporting legs are arranged on two sides of the first chassis upright post base and the second chassis upright post base, upright post clamping devices are arranged on one side of the chassis supporting legs, chassis base platforms are arranged on one side of the first chassis upright post base and the second chassis upright post base away from each other, a pair of chassis clamping devices are symmetrically arranged on the chassis base platforms, the first chassis upright post base and the second chassis upright post base serve as datum planes, and the chassis supporting legs and the chassis base platforms are matched, so that accurate alignment of a chassis box-shaped beam of a vehicle body and the datum plane of the tool is realized, and the problem that welding displacement caused by inaccurate positioning affects subsequent assembly precision is avoided.

Inventors

• LIU GUANGZHEN
• WANG YUNXIAO
• WU ZHONGYANG
• LIU GUANGCUN

Assignees

• 中车山东机车车辆有限公司

Dates

Publication Date

20260508

Application Date

20250425

Claims (5)

1. 1. The special fixture for welding the lifting support is characterized by comprising a first chassis upright post base (101) and a second chassis upright post base (102), wherein chassis supporting legs (2) are arranged on two sides of the first chassis upright post base (101) and the second chassis upright post base (102), upright post clamping devices (4) are arranged on one sides of the chassis supporting legs (2), chassis foundation platforms (3) are arranged on one sides, far away from the first chassis upright post base (101) and the second chassis upright post base (102), of the chassis foundation platforms (3), and a pair of chassis clamping devices (5) are symmetrically arranged on the chassis foundation platforms (3).
2. 2. The special fixture for welding the lifting support according to claim 1, wherein the underframe supporting leg (2) comprises a first supporting seat (201), a first supporting pile (202) is arranged on the first supporting seat (201), and a first supporting table (203) is arranged on the top of the first supporting pile (202).
3. 3. The lifting bracket welding special fixture as claimed in claim 2, wherein the upright clamping device (4) comprises a base (401), a high column (402) is arranged on the base (401), a first connecting body (403) is arranged on two sides of the top of the high column (402), a pair of first adjusting clamping pieces (404) are arranged on the first connecting body (403), a plurality of first adjusting holes (405) are formed in the first adjusting clamping pieces (404), a C-shaped first clamping piece (406) is arranged between the pair of first adjusting clamping pieces (404), one end of the C-shaped first clamping piece (406) is hinged with the first adjusting holes (405), a first threaded connecting sleeve (407) is arranged at the other end of the C-shaped first clamping piece (406), a first clamping screw (408) is movably arranged in the first threaded connecting sleeve (407), a screw hole is formed in the middle of the C-shaped first clamping piece (406), a positioning screw (409) is movably arranged in the screw hole, and the positioning screw (409) is meshed with the first threaded connecting sleeve (407).
4. 4. The lifting bracket welding special tool according to claim 3, wherein the chassis clamping device (5) comprises a second supporting seat (501), a second supporting pile (502) is arranged on the second supporting seat (501), a second supporting table (503) is arranged at the top of the second supporting pile (502), a second connecting body (504) is arranged on one side, far away from the high column (402), of the second supporting pile (502), a second adjusting clamping piece (505) is arranged on the second connecting body (504), a plurality of second adjusting holes (506) are formed in the second adjusting clamping piece (505), a second C-shaped clamping piece (507) is arranged between the second adjusting clamping piece (505), one end of the second C-shaped clamping piece (507) is hinged with the second adjusting holes (506), a second threaded connecting sleeve (508) is arranged at the other end of the second C-shaped clamping piece (507), a second clamping screw (509) is movably arranged in the second threaded connecting sleeve (508), and the second clamping screw (509) is meshed with the second threaded connecting sleeve (508).
5. 5. The lifting bracket welding special fixture as set forth in claim 4, wherein one ends of the first clamping screw (408), the positioning screw (409) and the second clamping screw (509) are provided with ejector blocks (6), and the other ends of the first clamping screw (408), the positioning screw (409) and the second clamping screw (509) are provided with rocking handle connectors (7).

Description

Special frock of lifting support welding Technical Field The utility model relates to the field of tools for welding lifting brackets, in particular to a tool special for welding lifting brackets. Background In the field of rail transit equipment or engineering machinery, a lifting bracket is used as a key bearing structure, and the welding quality of the lifting bracket directly influences the stability and safety of equipment. In the traditional welding process, the following technical bottlenecks generally exist in a positioning tool for a lifting bracket: The existing fixture adopts a fixed fixture, cannot adapt to chassis box-shaped cross beams and vehicle body upright posts with different specifications, so that workpiece positioning references are not uniform, displacement is easily generated due to contact gaps during welding, and the integral deformation amount is usually more than +/-4 mm, so that the subsequent assembly precision is seriously affected. The traditional clamping device is mostly clamped rigidly at a single point, lacks a linkage adjustment mechanism, is difficult to balance thermal stress generated in the welding process, and particularly at the crossed welding position of the upright post and the underframe, radial deformation of the upright post is out of tolerance due to stress concentration, and the post-welding manual adjustment is needed to be relied on, so that the production cost is increased. The existing fixing clamp has complicated clamping flow, tool parts are required to be frequently replaced according to different workpiece sizes, the daily productivity of a single shift can only reach 1.5, the post-welding repair procedure accounts for more than 30%, and the mass production efficiency is restricted. Disclosure of utility model The utility model aims to provide a special tool for welding a lifting bracket, which aims to solve the problems in the prior art. In order to achieve the above purpose, the utility model provides a special fixture for welding a lifting bracket, which comprises a first chassis upright post base and a second chassis upright post base, wherein chassis supporting legs are arranged on two sides of the first chassis upright post base and the second chassis upright post base, an upright post clamping device is arranged on one side of each chassis supporting leg, a chassis foundation platform is arranged on one side, far away from the first chassis upright post base and the second chassis upright post base, and a pair of chassis clamping devices are symmetrically arranged on the chassis foundation platform. Preferably, the underframe supporting leg comprises a first supporting seat, a first supporting pile is arranged on the first supporting seat, and a first supporting table is arranged at the top of the first supporting pile. As the preferable mode of the utility model, the upright column clamping device comprises a base, a high column is arranged on the base, a first connecting body is arranged on two sides of the top of the high column, a first pair of adjusting clamping pieces are arranged on the first connecting body, a plurality of first adjusting holes are formed in the first adjusting clamping pieces, a first C-shaped clamp is arranged between the first pair of adjusting clamping pieces, one end of the first C-shaped clamp is hinged with the first adjusting holes, a thread connecting sleeve is arranged at the other end of the first C-shaped clamp, a first clamping screw is movably arranged in the thread connecting sleeve, the first clamping screw is meshed with the thread connecting sleeve, a screw hole is formed in the middle of the first C-shaped clamp, and a positioning screw is movably arranged in the screw hole and meshed with the screw hole. As the preferred chassis clamping device of the utility model, the chassis clamping device comprises a second supporting seat, a second supporting pile is arranged on the second supporting seat, a second supporting table is arranged at the top of the second supporting pile, a second connecting body is arranged on one side, far away from the high column, of the second supporting pile, a pair of second adjusting clamping pieces are arranged on the second connecting body, a plurality of second adjusting holes are formed in the second adjusting clamping pieces, a second C-shaped clamp is arranged between the second adjusting clamping pieces, one end of the second C-shaped clamp is hinged with the second adjusting holes, a threaded connecting sleeve is arranged at the other end of the second C-shaped clamp, a second clamping screw is movably arranged in the threaded connecting sleeve, and the second clamping screw is meshed with the threaded connecting sleeve. As the preferable mode of the utility model, one end of the clamping screw I, one end of the positioning screw and one end of the clamping screw II are provided with ejector blocks, and the other ends of the clamping screw I, the positioning screw