CN211331958U

CN211331958U - Welding tool for underframe of low-floor tramcar

Info

Publication number: CN211331958U
Application number: CN201922084349.9U
Authority: CN
Inventors: 陈林; 张弛; 王威; 潘祖猛
Original assignee: Zhuhai CRRC Equipment Engineering Co Ltd
Current assignee: Zhuhai CRRC Equipment Engineering Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-25
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a welding frock of low-floor tram chassis, including the frock support, both sides are provided with a plurality of end beam positioner around the frock support, the left and right sides of frock support is provided with a plurality of crossbeam positioner; the end beam positioning device comprises a first supporting seat connected with a tool support, a first pressing assembly located at the upper end of the first supporting seat, a front pressing assembly located at the front end of the first supporting seat, and a rear pressing assembly located on the first supporting seat and opposite to the front pressing assembly, wherein the end beam is arranged between the front pressing assembly and the rear pressing assembly in a penetrating mode. The tool support has high strength and hardness, and also has good vibration damping performance. The end beam positioning device and the cross beam positioning device can accurately position the cross beam and the end beam, can be flexibly adjusted in the transverse direction and the longitudinal direction according to the size of a vehicle body, and are modular in design, so that parts can be universal on a plurality of tools, and the manufacturing cost is reduced.

Description

Welding tool for underframe of low-floor tramcar

Technical Field

The utility model belongs to the technical field of rail vehicle and specifically relates to a welding frock of low-floor tram chassis is related to.

Background

The underframe structure is a bottom supporting structure of each carriage of the tramcar, and generally comprises side beams, end beams and cross beams, wherein the head and tail parts also comprise a head underframe assembly and a tail underframe assembly, and most of the components are connected by adopting a welding method.

The chassis has a plurality of parts to be welded, so the parts to be welded have a plurality of positions and welding seams to be positioned, and the welding requirements on positioning accuracy and the like are high. The prior art adopts the conventional mode of welding and assembling parts one by one, and has the disadvantages of low welding efficiency, inconvenient use and low positioning precision among the parts.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a welding frock of low-floor tram chassis, the utility model discloses a solve the technical scheme that its technical problem adopted and be:

the device comprises a tool support, wherein a plurality of end beam positioning devices are arranged on the front side and the rear side of the tool support, and a plurality of cross beam positioning devices are arranged on the left side and the right side of the tool support; the end beam positioning device comprises a first supporting seat connected with a tool support, a first pressing assembly located at the upper end of the first supporting seat, a front pressing assembly located at the front end of the first supporting seat, and a rear pressing assembly located on the first supporting seat and opposite to the front pressing assembly, wherein the end beam is arranged between the front pressing assembly and the rear pressing assembly in a penetrating mode.

The welding frock of above low-floor tram chassis has following beneficial effect at least: the tool support has high strength and hardness, and also has good vibration damping performance. The end beam positioning device and the cross beam positioning device can accurately position the cross beam and the end beam, can be flexibly adjusted in the transverse direction and the longitudinal direction according to the size of a vehicle body, and are modular in design, so that parts can be universal on a plurality of tools, and the manufacturing cost is reduced.

According to a welding frock of low-floor tram chassis, crossbeam positioner include with frock leg joint's second supporting seat, the second that is located second supporting seat upper end compresses tightly the subassembly, is located the kicking block on the second supporting seat, the kicking block is located the second and compresses tightly the subassembly below. The crossbeam positioning device can accurately position the crossbeam, so that the crossbeam cannot move during welding, and the processing is more rapid and convenient.

According to a welding frock of low-floor tram chassis, the face that kicking block and crossbeam contacted is the inclined plane, can laminate completely with the contact surface of crossbeam for it is better to compress tightly the location effect.

According to a welding frock of low-floor tram chassis, first compress tightly the subassembly and the second compresses tightly the subassembly structure the same, all include the mount pad with first supporting seat or second supporting seat connection, be provided with the screw hole that link up from top to bottom on the mount pad, threaded hole wears to be equipped with the screw depression bar. The first pressing assembly and the second pressing assembly can adapt to end beams and cross beams of different sizes and can also play a good positioning effect.

According to a welding frock of low-floor tram chassis, preceding pressure subassembly includes the preceding base of pressing of being connected with first supporting seat, preceding pressure is provided with the screw hole that link up around on the base, threaded hole wears to be equipped with the screw thread depression bar. The threaded compression bar of the front compression assembly can be adjusted forwards and backwards, so that the front compression assembly is suitable for end beams and cross beams with different sizes, and has an excellent positioning effect

According to a welding frock of low-floor tram chassis, the bottom mounting of screw thread depression bar has flexible pressing block, flexible pressing block's area is big, presses and can increase the contact surface on end beam and crossbeam for it is firm to fix a position, can also avoid weighing wounded the work piece, can also play the damping effect.

According to a welding frock of low-floor tram chassis, the back is pressed the subassembly and is included the back of being connected with first supporting seat and press the base, the back is pressed the base and is fixed with the roof pressure board on the face relative with preceding pressure subassembly, the back is pressed the subassembly and can be replaced to pressing the end beam, plays good location effect.

According to a welding frock of low-floor tram chassis, the frock support includes a plurality of crossbeams, be provided with a plurality of mounting holes on the crossbeam, be fixed with quick anchor clamps in the mounting hole with dismantling. The quick clamp can quickly clamp the cross beam, the mounting speed is improved, and the detachable mounting can be suitable for different supports to be positioned.

According to a welding frock of low-floor tram chassis, the four corners of frock support all is provided with hangs, conveniently removes and carries the frock.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the invention, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

fig. 1 is a front view of a welding tool for a underframe of a medium-low floor tramcar according to the present invention;

FIG. 2 is a cross-sectional view taken in the direction AA of FIG. 1;

FIG. 3 is a cross-sectional view taken in the direction BB in FIG. 1;

fig. 4 is a partial schematic view in the direction C in fig. 1.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the welding tool for the underframe of the low-floor tramcar comprises a tool support 1, wherein a plurality of end beam positioning devices are arranged on the front side and the rear side of the tool support 1, and a plurality of cross beam positioning devices are arranged on the left side and the right side of the tool support 1; end beam positioner includes the first supporting seat 2 of being connected with frock support 1, is located the first subassembly 310 that compresses tightly of first supporting seat 2 upper end, is located the preceding subassembly 4 that presses of 2 front ends of first supporting seat to and be located first supporting seat 2 and press subassembly 5 after pressing subassembly 4 is relative before, and the end beam is worn to establish before pressing between subassembly 4 and the back subassembly 5. The beam positioning device comprises a second supporting seat 6 connected with the tool support 1, a second pressing component 320 located at the upper end of the second supporting seat 6, and a top block 7 located on the second supporting seat 6, wherein the top block 7 is located below the second pressing component 320.

The tool support 1 has high strength and hardness and also has good vibration damping performance. The end beam positioning device and the cross beam positioning device are arranged, so that the cross beam and the end beam can be accurately positioned, the cross beam and the end beam cannot move during welding, and the processing is quicker and more convenient. The first supporting seat 2 and the second supporting seat 6 of the beam positioning device and the beam positioning device are detachably connected through the fastening piece, the transverse and longitudinal directions can be flexibly adjusted, the chassis is suitable for chassis of different automobile body sizes to be processed, the modular design enables parts to be universal on a plurality of tools, and the manufacturing cost is reduced.

Referring to the embodiment in fig. 1 to 4, in order to facilitate moving and carrying the tool, the four corners of the tool support 1 are provided with lifting lugs 104, the front side and the rear side of the tool support 1 in the embodiment are respectively provided with two end beam positioning devices, each end beam positioning device is respectively arranged on the longitudinal support rod of the tool support 1, and the end beam positioning devices on the two sides are arranged left, right, front and rear. Seven beam positioning devices are respectively arranged on the left side and the right side of the tool support 1, each beam positioning device is respectively arranged on the transverse supporting rod of the tool support 1, and the beam positioning devices on the two sides are oppositely arranged left and right. The number of the end beam positioning devices and the number of the cross beam positioning devices can be freely selected according to different shapes of the processed underframe.

Because the both ends face of crossbeam is the inclined plane, the preferred inclined plane of face that kicking block 7 and crossbeam contacted in this embodiment, kicking block 7 can laminate completely with the crossbeam for compress tightly the effect of location better.

The first pressing component 310 and the second pressing component 320 have the same structure and respectively comprise a mounting seat 301 connected with the first supporting seat 2 or the second supporting seat 6, a threaded hole which is through up and down is formed in the mounting seat 301, and a threaded pressing rod 302 penetrates through the threaded hole. The front pressing component 4 comprises a front pressing base 401 connected with the first supporting seat 2, a front threaded hole and a rear threaded hole are formed in the front pressing base 401, and a threaded pressing rod 402 penetrates through the threaded hole. The rear pressing component 5 comprises a rear pressing base 501 connected with the first supporting seat 2, and a top pressing plate 502 is fixed on the surface of the rear pressing base 501 opposite to the front pressing component 4.

The end beam is arranged between the front pressing component and the rear pressing component in a penetrating mode, then the threaded pressing rod 402 on the front pressing component is adjusted, the end beam is pressed against the pressing plate 502 of the rear pressing base 501, finally the threaded pressing rod 301 on the first pressing component 310 is adjusted, and the end beam is pressed on the first supporting seat 2 to be positioned.

The transverse support rod is provided with a plurality of mounting holes, the mounting holes are internally and detachably fixed with quick clamps 101, the side beams are connected with the two ends of the end beams, the side beams are fixed by the quick clamps 101, the two ends of the cross beam are finally placed in the second support seat 6, the top block 7 is tightly pressed with the end face of the cross beam, and then the threaded compression rod 302 of the second pressing assembly 320 is adjusted to tightly press the cross beam on the second support seat 6. The first compression assembly 310 and the second compression assembly 320 can adapt to end beams and cross beams with different sizes and can achieve excellent positioning effect. The threaded strut 402 of the front compression assembly 4 is adjustable back and forth to accommodate end and cross beams of different sizes.

The bottom ends of the threaded

compression rods

302 and 402 in this embodiment are fixed with flexible

pressing blocks

303 and 403, which can be selected from, but not limited to, rubber pads. The flexible

pressing blocks

303 and 403 are large in area, contact surfaces can be increased when the flexible pressing blocks are pressed on the end beams and the cross beams, positioning is firm, workpieces can be prevented from being crushed, and a vibration reduction effect can be achieved.

The above embodiments are further described in the above aspects of the present invention, but it should not be understood that the scope of the above subject matter of the present invention is limited to the above embodiments, and all the technologies realized based on the above aspects belong to the scope of the present invention.

Claims

1. The utility model provides a welding frock of low-floor tram chassis which characterized in that: comprises that

The tool support comprises a tool support (1), wherein a plurality of end beam positioning devices are arranged on the front side and the rear side of the tool support (1), and a plurality of cross beam positioning devices are arranged on the left side and the right side of the tool support (1);

end beam positioner, include first supporting seat (2) of being connected with frock support (1), be located first supporting seat (2) upper end and compress tightly subassembly (310), be located preceding pressure subassembly (4) of first supporting seat (2) front end to and be located first supporting seat (2) and press subassembly (5) with preceding back that press subassembly (4) is relative, the end beam is worn to establish before pressing subassembly (4) and after pressing between subassembly (5).

2. The welding frock of low-floor tram chassis of claim 1 characterized in that: the beam positioning device comprises a second supporting seat (6) connected with the tool support (1), a second pressing component (320) located at the upper end of the second supporting seat (6), and a top block (7) located on the second supporting seat (6), wherein the top block (7) is located below the second pressing component (320).

3. The welding frock of low-floor tram chassis of claim 2 characterized in that: the surface of the top block (7) contacting with the cross beam is an inclined surface.

4. The welding frock of low-floor tram chassis of claim 2 characterized in that: the first pressing component (310) and the second pressing component (320) are identical in structure and respectively comprise a mounting seat (301) connected with the first supporting seat (2) or the second supporting seat (6), a threaded hole which is communicated up and down is formed in the mounting seat (301), and a threaded pressing rod (302) penetrates through the threaded hole.

5. The welding frock of low-floor tram chassis of claim 4 characterized in that: preceding pressure subassembly (4) are including pressing base (401) before being connected with first supporting seat (2), preceding pressure base (401) are last to be provided with the screw hole that link up around, threaded hole is worn to be equipped with screw depression bar (402).

6. The welding frock of low-floor tram chassis of claim 5 characterized in that: and flexible pressing blocks (303, 403) are fixed at the bottom ends of the threaded pressing rods (302, 402).

7. The welding frock of low-floor tram chassis of claim 1 characterized in that: the rear pressing component (5) comprises a rear pressing base (501) connected with the first supporting seat (2), and a top pressing plate (502) is fixed on the surface of the rear pressing base (501) opposite to the front pressing component (4).

8. The welding frock of low-floor tram chassis of claim 1 characterized in that: the fixture support (1) comprises a plurality of transverse supporting rods, a plurality of mounting holes are formed in the transverse supporting rods, and the rapid clamp (101) is detachably fixed in the mounting holes.

9. The welding frock of low-floor tram chassis of claim 1 characterized in that: lifting lugs (104) are arranged at four corners of the tool support (1).