CN108381054A - A kind of tramcar M car body general assembly toolings and its technique - Google Patents

Abstract

The invention discloses the second tool components of the first tool component and setting bottom girder both ends in the middle part of a kind of tramcar M car bodies general assembly tooling, including bottom girder, setting bottom girder；Chassis and preceding end-rack of first tool component for clamping car body, the second tool component are used for the side wall and ceiling of clamping car body；Second tool component includes the column support being connect with bottom girder and can be along the adjustable shelf that bottom girder axially slides.According to technological requirement, chassis is properly positioned first, reassembles both walls, then assembles ceiling, back-end wall and preceding end-rack successively.Chassis and preceding end-rack of first tool component for clamping car body, second tool component is used for the side wall and ceiling of clamping car body, end-rack, chassis, side wall, ceiling and back-end wall position between any two assembles secured, assembly precision height, thermal deformation and welding postcooling contraction distortion in welding process can effectively be inhibited, to complete car body general assembly process.

Description

A kind of rail car M car body assembly tooling and its technology

technical field

The invention relates to car body assembly, in particular to a tramcar M car body assembly tooling and its technology.

Background technique

In car body assembly, such as train body and automobile body, the car body usually includes an underframe, a ceiling, a front frame, a rear end wall and a side wall, and the side wall includes a number of columns. Trains are used on special tracks, and all trains on special tracks need to ensure that their size deviations are extremely small.

In the prior art, in the welding process of the car body, the positioning and clamping are not done well, there is no positioning and clamping, or the positioning and clamping is not in place, resulting in thermal deformation during the welding process and cooling shrinkage deformation after welding. large deviation.

Contents of the invention

In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a tramcar M body assembly tooling and its technology, which can effectively suppress thermal deformation during welding and cooling shrinkage deformation after welding.

The technical scheme that the present invention adopts for solving its technical problem is:

A car body assembly tooling for a tram M, comprising a bottom beam, a first tooling assembly for setting the middle of the bottom beam, and a second tooling assembly for setting both ends of the bottom beam; the first tooling assembly is used for clamping the chassis of the car body and the front end frame, the second tooling assembly is used for clamping the side wall and ceiling of the car body; the second tooling assembly includes a column frame connected to the bottom beam and a movable frame that can slide axially along the bottom beam; the bottom The beam is provided with a first chute, and the first chute is used to control the axial translation of the second tooling assembly along the bottom beam.

According to another specific embodiment of the present invention, it is further provided that the movable frame is provided with a plurality of supports and a plurality of first pressing parts, the supporting parts and the first pressing parts are respectively used to connect the outer wall and the inner wall of the side wall of the vehicle body, The supporting piece and the first pressing piece are jointly used for clamping the side wall of the vehicle body.

According to another specific embodiment of the present invention, it is further provided that the first pressing member includes a connecting rod, a sliding rod connected to both ends of the connecting rod and a first pressing rod, and the connecting body of the sliding rod and the connecting rod is L-shaped. The movable frame is provided with a through hole, and the sliding rod is accommodated in the through hole. The sliding rod can rotate around its axial direction and slide along its axial direction. When the sliding rod slides, the first pressing rod is away from or close to the movable frame, and the first The pressing rod is threadedly connected to the connecting rod; the threaded connection between the first pressing rod and the connecting rod is used to drive the first pressing rod to contact the inner wall of the side wall of the vehicle body.

According to another specific embodiment of the present invention, further, the length direction of the support member is longitudinal, and the axial direction of the bottom beam is transverse; the support member abuts against the side wall of the vehicle body through the long side.

According to another specific embodiment of the present invention, it is further provided that the supporting member includes a connected top block and a connecting block, and the top block and the connecting block are respectively used to connect the inner wall of the side wall of the vehicle body and the movable frame; the top block and the connecting block The block bolts are connected, and one of the top block and the connection block is provided with a position adjustment hole; when the bolt is loose, the bolt can slide in the position adjustment hole, and the top block can adjust its protruding length relative to the connection block.

According to another specific embodiment of the present invention, it is further provided that the first tool assembly includes a support column for positioning and clamping the front end frame of the vehicle body; the support column is provided with a positioning pin and a push rod, and the positioning pin is used to control the front end of the vehicle body. The positioning pin for frame positioning, the ejector rod is threadedly connected with the supporting column;

According to another specific embodiment of the present invention, it is further provided that the first tooling assembly includes several third pressing pieces for clamping the vehicle body underframe; the third pressing pieces include a seat body, and are arranged on the seat body The crank arm and the third pressure rod threaded on the crank arm; the threaded connection between the third pressure rod and the crank arm is used to drive the third pressure rod to abut against the underframe of the vehicle body, and the third pressure rod and the seat body are assembled together. Clamp body underframe.

A rail train M car body assembly process, comprising the following steps:

In step a, the vehicle body underframe is placed on the first tooling assembly, and the first tooling assembly positions and clamps the vehicle body underframe; the positioning block is used to control the positioning of the vehicle body underframe, and the third pressure bar and the base clamp the vehicle body Chassis;

Step b, place the front end frame of the car body on the first tooling assembly by a crane, adjust the levelness of the front end frame with a jack, and position and clamp the bottom frame of the car body by the first tooling assembly so that the connecting surfaces of the front end frame and the bottom frame correspond to each other. Connection, welding of the front frame and the bottom frame;

In step c, several uprights on the side wall are clamped on the second tooling assembly, and the connection surfaces of several uprights and the bottom frame are connected correspondingly; the support member and the first pressure piece abut against the outer side and the inner side of the upright respectively, and the bottom frame and the bottom frame are respectively connected to each other. Several column welding;

In step d, the ceiling is connected to the connecting surface of the side wall correspondingly, and the second tooling assembly clamps the ceiling; the ceiling and the side wall are welded.

In step e, the rear end walls are correspondingly connected to the chassis, side walls and roof, the rear end walls on both sides of the car body are kept at a fixed distance, and the rear end walls are respectively welded to the chassis, side walls and roof.

According to another specific embodiment of the present invention, further, in the step b, according to the position of the chassis of the vehicle body on the first tooling assembly and the positioning and assembly of the chassis and the front end frame, the lateral sliding of the support column and /or longitudinal sliding, adjust the position of the support column, adjust the spacing between several support columns; on the support column, the positioning pin is aligned with the threaded hole of the front-end frame, and the ejector rod abuts against the front-end frame of the car body upwards.

According to another specific embodiment of the present invention, it is further provided that in the step c, according to the position of the chassis of the vehicle body on the first tooling assembly and the positioning and assembly of the side wall and the chassis, the movable frame drives the support and The first pressing piece laterally slides, rotates the first pressing piece, the side wall and the chassis are positioned and assembled, and the support piece and the first pressing piece clamp the side wall.

A kind of railcar M car body assembly tooling and its technology adopted by the present invention have the following beneficial effects: in the car body assembly, the first tooling assembly is used for clamping the underframe and the front end frame of the car body, and the second tooling assembly It is used to clamp the side wall and ceiling of the car body, and the positioning and assembly between the end frame, the bottom frame, the side wall, the ceiling and the rear end wall are firm and the assembly precision is high, which can effectively inhibit thermal deformation during welding and cooling after welding Shrink deformation to complete the car body assembly process.

Description of drawings

Fig. 1 is a side view of the present invention;

Fig. 2 is the exploded view of the side viewing angle of the present invention;

Fig. 3 is the front view of the present invention;

Fig. 4 is the front view of movable frame of the present invention;

Fig. 5 is the front view of the first frock assembly of the present invention;

Fig. 6 is an exploded view of the side view angle of the second tooling assembly of the present invention;

Fig. 7 is a connection schematic diagram of the main viewing angle of the bottom beam and the column frame of the present invention;

Fig. 8 is a partially enlarged view at A of Fig. 7 of the present invention;

Fig. 9 is a structural schematic diagram of the main viewing angle of the bottom beam of the present invention;

Fig. 10 is a structural schematic diagram of the main viewing angle of the third pressing piece of the present invention;

Fig. 11 is a structural schematic diagram of a supporting column of the present invention;

Figure 12 is a front view of the support of the present invention;

Figure 13 is a side view of the support of the present invention;

Fig. 14 is an exploded view of the second pressing part of the present invention;

Fig. 15 is an exploded view of the first pressing part of the present invention.

Detailed ways

The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 to Fig. 3, a kind of railcar M car body general assembly tooling, comprises bottom beam 1, the first tooling assembly 2 that sets the middle part of bottom beam 1 and the second tooling assembly 3 that sets bottom beam 1 two ends; A tool assembly 2 is used for clamping the underframe and the front end frame of the vehicle body, and a second tool assembly 3 is used for clamping the side wall and the ceiling of the vehicle body; the second tool assembly 3 includes a column frame 31 connected with the bottom beam 1 and A movable frame 32 that can slide axially along the bottom beam 1 .

As shown in Figure 3 and Figure 5, the bottom beam 1 includes at least two parallel ones, and the bottom beam 1 is provided with a first chute 11 along its axial direction; the first tooling assembly 2 and the column frame 31 are connected to the first chute 11, The first tool assembly 2 and the column frame 31 can slide along the axial direction of the bottom beam 1 . The axial direction of the bottom beam 1 is transverse, and the first tool assembly 2 and the column frame 31 can slide along the transverse direction.

The vehicle body of the present invention includes a front end frame, an underframe, a side wall, a ceiling and a rear end wall. In the final assembly of the car body, these large parts are correctly positioned and clamped, and the positioning and assembly between the end frame, the bottom frame, the side wall, the ceiling and the rear end wall are firm and the assembly precision is high, which can effectively suppress thermal deformation during the welding process And cooling shrinkage deformation after welding to complete the car body assembly process.

As shown in Figure 1, Figure 2 and Figure 6, in order to meet the needs of various vehicle models, the second tooling assembly 3 includes a column frame 31 connected to the bottom beam 1 and a movable frame 32 that can slide axially along the bottom beam 1. Adjustment range in the vehicle width direction. The first tooling assembly 2 and the column frame 31 can slide laterally, the first tooling assembly 2, the second tooling assembly 3 and the bottom beam 1 are designed in a modular manner, the first tooling assembly 2 and the second tooling assembly 3 are provided with universal clamps, The tooling can be commonly used for various vehicle bodies, thereby reducing the manufacturing cost.

Bottom beam 1 is made of cast iron material with strength grade HT20-40 and hardness HB170-241, which has high strength and hardness; its good cutting performance is convenient for processing the first chute 11 of T shape, and the first chute 11 is Inverted T-shaped; also has good shock absorption, ensuring the accuracy of positioning and clamping of various parts of the car body.

As shown in Fig. 3 and Fig. 7 to Fig. 9, the bottom beam 1 is provided with a first chute 11, and the column frame 31 is provided with a first slider capable of sliding in the first chute 11; the first chute 11 is used to control the axial translation of the second tooling assembly 3 along the bottom beam 1 . The column frame 31 includes several columns, and the column is a square tube with a cross-section length ≥ 160 mm and a width ≥ 160 mm. The column frame 31 can effectively withstand lateral loads and is used for installing the movable frame 32, installing the hydraulic device, and clamping the side of the vehicle body. wall.

The post frame 31 is also connected to the first chute 11 through a locking piece; the first chute 11 is in an inverted T shape, and when the locking piece abuts against the wall of the first chute 11 , the sliding of the post frame 31 is locked. The locking part is a briquetting block accommodated in the first chute 11, and the briquetting block is connected with the column frame 31 by bolts; The upper end locks the sliding of the column frame 31.

As shown in Fig. 1, Fig. 2 and Fig. 6, column frame 31 is connected movable frame 32 by guide rod slider structure 37, and guide rod slider structure 37 controls movable part directional slippage; Guide rod slider structure 37 comprises and movable frame 32 connected guide rod and the guide hole arranged on the column frame 31, the guide hole is used for accommodating the directional sliding of the guide rod.

As shown in FIG. 1 , FIG. 2 and FIG. 6 , the column frame 31 is provided with a power part 33 for driving the movable frame 32 to slide, and several power parts 33 are provided. The power part 33 can be a cylinder body, the shell of the cylinder body is connected with the column frame 31 , and the piston rod of the cylinder body is connected with the movable frame 32 . More preferably, the cylinder body is a hydraulic cylinder, the shell of the hydraulic cylinder is fixedly connected to the column frame 31 , the end of the piston rod of the hydraulic cylinder is hinged to the movable frame 32 , and the hydraulic cylinder drives the movable frame 32 away from or close to the column frame 31 . Power part 33 also can be motor and leading screw nut pair, and motor is connected on the column frame 31, and is connected with leading screw by transmission, and nut is connected on movable frame 32, and is connected with leading screw transmission.

As shown in FIG. 1 , FIG. 2 and FIG. 6 , rollers 32 a are provided at the bottom of the movable frame 32 , and the rollers 32 a are used to drive the movable frame 32 to translate. The roller 32 a supports the movable frame 32 , and the power member 33 pushes the movable frame 32 to translate; the movable frame 32 translates on the column frame 31 or the bottom beam 1 .

The upper end of the column frame 31 is provided with a walkway, and the column frame 31 is connected with stairs, and the stairs are connected with the aisle. When welding the roof of the car body or the top of the side wall, high-altitude operations are involved, so stairs are connected to the first tooling assembly 2 on both sides. The column frame 31 is provided with a walkway, and the walkway is connected with stairs; the operator stands on the walkway for welding and other work, and the walkway and the stairs are set to ensure that the welding work of the car body is convenient and the operator is safe.

As shown in Fig. 1, Fig. 2 and Fig. 6, the movable frame 32 is provided with several supporting parts 34 and some first pressing parts 35, and the supporting parts 34 and the first pressing parts 35 are respectively used to connect the outer wall and the inner wall of the side wall of the vehicle body. , the supporting member 34 and the first pressing member 35 are used for clamping the side wall of the vehicle body together.

As shown in Fig. 1, Fig. 2, Fig. 6 and Fig. 15, the first pressing member 35 includes a connecting rod 35b, a sliding rod 35a and a first pressing rod 35c respectively connected to the two ends of the connecting rod 35b, the sliding rod 35a and the connecting rod 35b The connecting body is L-shaped; the movable frame 32 is provided with a through hole, and the sliding rod 35a is accommodated in the through hole. The sliding rod 35a can rotate around its axial direction and slide along its axial direction. When the sliding rod 35a slides, the first Depression bar 35c is away from or close to movable frame 32, and when promptly slide bar 35a slides, first depression bar 35c is close to or away from vehicle body, and first depression bar 35c is threadedly connected with connecting rod 35b; The screw connection is used to drive the first pressing rod 35c to abut against the inner wall of the side wall of the vehicle body. The first pressing piece 35 can be far away from and close to the vehicle body, and the first pressing piece 35 can rotate around the axial direction of the slide bar 35a. It can prevent the connecting rod 35b and the first pressing bar 35c from hitting the moving side wall, and then the first pressing piece 35 leaves the hollowed-out side wall to facilitate the clamping and unloading of the side wall. There is no need to disassemble the tooling. The side wall is a hollowed-out support. Before the car body is loaded into the tooling, the first pressing piece 35 is close to the movable frame 32 to facilitate the loading of the car body; after the car body is loaded, the first pressing piece 35 is inserted into the hollowed out car body; According to the position on the car body that needs to be clamped, rotate the first pressing member 35 to align the first pressing bar 35c with the required clamping position; the first pressing bar 35c is screwed into the connecting rod 35b, and the first pressing bar 35c abuts against the inner wall of the vehicle body side wall.

On different car bodies, the position of the car body column often has a small amount of adjustment along the longitudinal direction, and the rotatable first pressing part 35 is L-shaped to ensure that the side walls of different car bodies can be clamped by the first pressing part 35. During the assembly process of the side wall of the car body and the underframe, after the underframe is clamped to the first tooling assembly 2, the clamping position of the underframe changes, and the assembly position of the side wall needs to be adjusted longitudinally. The pressing piece 35 is L-shaped, and the side wall after longitudinal adjustment can be well positioned and clamped.

As shown in Fig. 1, Fig. 2 and Fig. 6, the movable frame 32 can drive the supporting member 34 and the first pressing member 35 to be close to the side wall of the car body as a whole, so that the second tooling assembly 3 is suitable for car bodies of different widths; The piece 35 can drive the first pressing piece 35 away from and close to the vehicle body, which facilitates loading and unloading of the vehicle body, and the first pressing piece 35 can be applied to the situation that the side walls of the vehicle body have different concave-convex structures. Due to the concave-convex structure of the side wall of the car body, the required installation position on the side wall of the car body changes with respect to the distance from the movable frame 32, and the first pressing member 35 can be adapted flexibly.

The first pressing rod 35c is connected with a wrench, and the wrench is used to drive the first pressing rod 35c to rotate in the connecting rod 35b, which is convenient for tightening or unscrewing the first pressing rod 35c; when the first pressing rod 35c rotates, the first pressing rod 35c The rod 35c protrudes or retracts relative to the connecting rod 35b.

As shown in Figures 3 and 4, the length direction of the support member 34 is longitudinal, and the axial direction of the bottom beam 1 is transverse; the support member 34 abuts the side wall of the vehicle body through the long side; After the position, the support 34 can abut against the part. On different car bodies, the position of the car body column often has a small amount of adjustment along the longitudinal direction. The length direction of the support 34 is longitudinal, and the support 34 touches the outer wall of the side wall of the car body through the long side to ensure that the clamping position is fine-tuned along the longitudinal direction. Finally, the support member 34 clamps the side walls of the vehicle body through different positions on the body, and these different vehicle body side walls can be clamped by the support member 34 .

As shown in Fig. 12 and Fig. 13, support member 34 comprises connected top block 34a and connecting block 34b, and top block 34a and connecting block 34b are respectively used for connecting the inner wall of vehicle body side wall and movable frame 32; The block 34b is bolted, and one of the top block 34a and the connection block 34b is provided with a position adjustment hole; when the bolt is loose, the bolt can slide in the position adjustment hole, and the top block 34a can adjust its protruding length relative to the connection block 34b. The movable frame 32 can drive the supporting member 34 and the first pressing member 35 to be close to the side wall of the car body as a whole, so that the second tooling assembly 3 is suitable for car bodies of different widths; That is, the jacking block 34a can be far away from and close to the vehicle body, and the jacking block 34a can be applied to the situation that the side walls of the vehicle body have different concave-convex structures. Due to the concave-convex structure of the side wall of the car body, the required installation position on the side wall of the car body has changes relative to the distance of the movable frame 32, and the jack block 34a can be flexibly adapted.

As shown in FIG. 1 , FIG. 2 and FIG. 6 , the upper end of the movable frame 32 is provided with a second pressing piece 36 , and the second pressing piece 36 is used for clamping the roof of the vehicle body. As shown in Figure 14, the second pressure member 36 includes a swing rod 36a and a second pressure rod 36b; one end of the swing rod 36a is movably connected with the movable frame 32, and the other end is screwed with the second pressure rod 36b; the second pressure rod 36b And the threaded connection of the swing rod 36a is used to drive the second pressing rod 36b to abut against the roof of the vehicle body downward; when the swing rod 36a rotates relative to the movable frame 32, the second pressing rod 36b is away from or transferred to the top of the roof of the vehicle body. Before the car body is loaded into the frock, the fork 36a rotates and drives the second depression bar 36b close to the movable frame 32, which is convenient for the car body to load into; The top of the car body ceiling, and according to the position that needs to be clamped on the car body, adjust the rotation angle of the fork 36a so that the second compression bar 36b is aligned with the required clamping position; Screwing in, the second pressing rod 36b abuts against the upper end of the roof of the vehicle body.

As shown in FIG. 1 to FIG. 3 and FIG. 5 , the first tool assembly 2 includes a support column 22 for positioning and clamping the front end frame of the vehicle body. As shown in Fig. 5 and Fig. 11, support column 22 is provided with locating pin 22a and push rod 22b, and locating pin 22a is used to control the locating pin 22a of vehicle body front frame location, and push rod 22b is threadedly connected with support column 22; 22b is threadedly connected with the support column 22, and is used for abutting against the lower end of the front end frame of the vehicle body. The difficulty in assembling the front end frame lies in the positioning. It is necessary to ensure the center, height and level of the front end. Therefore, two support columns 22 with ejector rods 22b and positioning pins 22a are designed at the front of the car body. The ejector rods 22b can control the lifting and positioning. The pin 22a is aligned with the threaded hole of the front-end frame to ensure the center and height; the level of the front-end frame can be adjusted by lifting the push rod 22b.

As shown in Fig. 1 to Fig. 3 and Fig. 5, the first tool assembly 2 includes a longitudinal beam 23 arranged on the bottom beam 1, a crossbeam 24 arranged on the longitudinal beam 23, and a support column 22 is arranged on the crossbeam 24; The axial direction of 1 is transverse, and the bottom beam 1 is provided with a first chute 11 connecting the longitudinal beam 23 along its axial direction, and the first chute 11 is used to control the lateral sliding of the support column 22; There is a second chute connecting the beam 24, and the second chute is used to control the longitudinal sliding of the supporting column 22. According to the specific position of the front end frame of the vehicle body in the tooling, the positions of several supporting columns 22 are adjusted as a whole, and several supporting columns 22 can move laterally or longitudinally synchronously.

As shown in Fig. 1 and Fig. 2, some support columns 22 are provided on the beam 24, and the beam 24 is provided with a third chute connecting the support column 22, and the third chute is used to control the lateral sliding of the support column 22; the support column 22 After going along the third chute, the spacing between the supporting columns 22 can be adjusted.

As shown in FIG. 3 and FIG. 5 , the first tool assembly 2 includes several third pressing pieces 21 for clamping the underframe of the vehicle body. As shown in Fig. 5 and Fig. 10, the third pressing member 21 comprises a base body 21a, a crank arm 21b arranged on the base body 21a, and a third pressing rod 21c screwed on the crank arm 21b; The threaded connection of the arm 21b is used to drive the third pressing rod 21c to abut against the underframe of the vehicle body, and the third pressing rod 21c and the seat body 21a clamp the underframe of the vehicle body together.

As shown in FIG. 10 , the seat body 21a is connected to the crank arm 21b through two detachable pin shafts, and the two pin shafts are arranged up and down; when one of the pin shafts is removed, the crank arm 21b can swing around the other pin shaft. When the crank arm 21b rotates around the pin shaft, the more it swings down, the left and right stretches are longer, and it is easier to block the placement of the vehicle body chassis; if the crank arm 21b and the third depression bar 21c are rotated around different pin shafts, the The spaces are not the same. The underframe of the car body is a hollowed-out support. According to the position of the hollowed out area, select the pin to be disassembled so that the beam of the underframe of the car body avoids the rotation space of the third pressing piece 21; 21b swing angle.

Before the car body is loaded into the frock, select the pin shaft to be disassembled and the swing angle of the crank arm 21b; The crank arm 21b is screwed in, and the third pressing rod 21c abuts against the chassis of the vehicle body.

As shown in FIG. 5 , one or more of the third pressing parts 21 is provided with a positioning block, and the positioning block is used to control the positioning of the vehicle body chassis on the first tool assembly 2 .

A rail train M car body assembly process includes steps a to e.

Based on the position of the bottom frame after being clamped, a movable frame 32 capable of lateral movement is set to ensure that the side wall can move along the horizontal direction, and after the side wall is clamped, it is positioned and assembled with the bottom frame; and the support member 34 abuts against the side wall with its long side The outer wall and the first pressing piece 35 can be rotated, that is, the side wall can move longitudinally, and the side wall can be positioned and assembled with the chassis after being clamped.

Based on the clamped position of the bottom frame, a support column 22 capable of lateral movement and vertical movement is set, and the front end frame and the bottom frame are positioned and assembled.

After the side wall is connected to the underframe, the position of the side wall is used as a reference to set the swingable third pressure member 21 and the swing bar 36a to rotate around the vertical axis to ensure that the ceiling can move horizontally and vertically. Side wall positioning assembly.

In step a, the vehicle body chassis is placed on the first tooling assembly 2 by a crane, and the first tooling component 2 positions and clamps the vehicle body chassis; the positioning block is used to control the positioning of the vehicle body chassis, and the third pressing bar 21c and The seat body 21a clamps the chassis of the vehicle body;

Step b, place the front end frame of the car body on the first tooling assembly 2 by a crane, adjust the levelness of the front end frame with a jack, and position and clamp the bottom frame of the car body by the first tooling assembly 2, so that the connecting surface of the front end frame and the bottom frame Corresponding connection, the front frame and the bottom frame are welded;

In step c, several columns on the side wall are clamped on the second tooling assembly 3, and the connection surfaces of several columns and the chassis are correspondingly connected; the support member 34 and the first pressing member 35 abut against the outer side and the inner side of the column respectively, The chassis is welded to several columns;

Step d, the ceiling and the side wall are connected correspondingly, the second tooling assembly 3 clamps the ceiling; the second pressure rod 36b presses against the ceiling; the ceiling and the side wall are welded;

In step e, the rear end walls are correspondingly connected to the chassis, side walls and roof, the rear end walls on both sides of the car body are kept at a fixed distance, and the rear end walls are respectively welded to the chassis, side walls and roof.

In step d, the roof is welded on the aisle of the column frame 31, and different points of the roof are welded at different positions on the aisle.

In step b, according to the position of the chassis of the vehicle body on the first tooling assembly 2 and the positioning and assembly of the chassis and the front end frame are required, the position of the support column 22 is adjusted and the position of the support column 22 is adjusted by sliding laterally and/or longitudinally. The spacing between several support columns 22; on the support columns 22, the positioning pin 22a is aligned with the threaded hole of the front-end frame, and the push rod 22b abuts against the front-end frame of the vehicle body upwards.

In step c, according to the position of the chassis of the vehicle body on the first tooling assembly 2 and the positioning and assembly of the side wall and the chassis are required, the movable frame 32 drives the support member 34 and the first pressing member 35 to slide laterally, and the first pressing member 35 is rotated. Part 35, the side wall and the chassis are positioned and assembled, and the support part 34 and the first pressing part 35 clamp the side wall.

In step d, according to the position of the side wall on the second tooling assembly 3, the side wall and the ceiling are positioned and assembled, the swing rod 36a drives the second pressing rod 36b to rotate in place, the ceiling is positioned and clamped, the ceiling and the side wall are positioned and assembled, and the ceiling and the side wall are positioned and assembled. Side wall welding.

In step e, there are two rear end walls, respectively connected to both sides of the car body; the two rear end walls are supported by pullers, and the distance between the rear end walls is in accordance with technological requirements.

The above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall fall within the scope of the technical solution of the present invention.

Claims (10)

1. A kind of tramcar M car body assembly tooling, it is characterized in that, comprise bottom beam (1), the first frock component (2) that bottom beam (1) middle part is set and the second tool assembly (2) that bottom beam (1) two ends are set Tooling assembly (3); the first tooling assembly (2) is used for clamping the underframe and front end frame of the car body, and the second tooling assembly (3) is used for clamping the side wall and ceiling of the car body; the first The second tooling assembly (3) includes a column frame (31) connected to the bottom beam (1) and a movable frame (32) that can slide axially along the bottom beam (1); the bottom beam (1) is provided with a first The chute (11), the first chute (11) is used to control the axial translation of the second tooling assembly (3) along the bottom beam (1). 2. A kind of tramcar M car body assembly tooling according to claim 1, is characterized in that, described movable frame (32) is provided with some support parts (34) and some first pressing parts (35), supports The piece (34) and the first pressing piece (35) are respectively used to connect the outer wall and the inner wall of the side wall of the vehicle body, and the supporting piece (34) and the first pressing piece (35) are used for clamping the side wall of the vehicle body together. 3. A kind of tramcar M car body assembly tooling according to claim 2, is characterized in that, described first pressure part (35) comprises connecting rod (35b), is respectively connected at connecting rod (35b) two ends. Slide bar (35a) and the first depression bar (35c), the connecting body of slide bar (35a) and connecting rod (35b) is L type; Movable frame (32) is provided with through hole, and slide bar (35a) is accommodated in In the through hole, the sliding rod (35a) can rotate around its axial direction and slide along its axial direction. When the sliding rod (35a) slides, the first pressing rod (35c) is away from or close to the movable frame (32), and the first pressing The rod (35c) is threadedly connected to the connecting rod (35b); the threaded connection between the first pressing rod (35c) and the connecting rod (35b) is used to drive the first pressing rod (35c) to abut against the inner wall of the vehicle body side wall. 4. A kind of tramcar M car body assembly tooling according to claim 2, is characterized in that, the length direction of described support (34) is longitudinal, and the axial direction of bottom beam (1) is transverse; (34) abut against the side wall of the vehicle body through the long side. 5. A kind of tramcar M car body assembly tooling according to claim 2 or 3, is characterized in that, described support member (34) comprises connected top block (34a) and connecting block (34b), and top block (34a) and connection block (34b) are respectively used to connect the inner wall of car body side wall and movable frame (32); Top block (34a) and connection block (34b) bolt connection, top block (34a) and connection block (34b ) is provided with a positioning hole; when the bolt is loose, the bolt can slide in the positioning hole, and the top block (34a) can adjust the protruding length of its relative connecting block (34b). 6. A kind of tramcar M car body assembly tooling according to claim 1, is characterized in that, the first tooling assembly (2) comprises the support column (22) that is used for positioning clamping car body front end frame; Support column (22) A positioning pin (22a) and a push rod (22b) are provided, the positioning pin (22a) is used to control the positioning pin (22a) of the front end frame of the vehicle body, and the push rod (22b) is threadedly connected with the support column (22) ; The ejector rod (22b) is threadedly connected with the support column (22), and is used to abut against the lower end of the front end frame of the vehicle body. 7. A kind of tramcar M car body assembly tooling according to claim 1, is characterized in that, described first tooling component (2) comprises the 3rd pressing piece (21 that is used for clamping car body chassis) ); the third pressing member (21) comprises a base (21a), a crank arm (21b) arranged on the base (21a) and a third pressing rod (21c) threaded on the crank arm (21b); The threaded connection between the third pressing rod (21c) and the crank arm (21b) is used to drive the third pressing rod (21c) to abut against the chassis of the vehicle body, and the third pressing rod (21c) and the base (21a) are clamped together Body chassis. 8. A rail train M car body assembly process is characterized in that, comprising the following steps: In step a, the vehicle body chassis is placed on the first tooling assembly (2), and the first tooling component (2) positions and clamps the vehicle body chassis; the positioning block is used to control the positioning of the vehicle body chassis, and the third pressing bar ( 21c) and the seat body (21a) clamp the vehicle body underframe; Step b, place the front end frame of the car body on the first tooling assembly (2) by a crane, adjust the levelness of the front end frame with a jack, and position and clamp the bottom frame of the car body by the first tooling assembly (2), so that the front end frame and the bottom frame The connecting surface of the frame is correspondingly connected, and the front frame and the bottom frame are welded; In step c, several columns on the side wall are clamped on the second tooling assembly (3), and the connection surfaces of several columns and the chassis are connected correspondingly; the support piece (34) and the first pressing piece (35) are respectively abutted against The outer and inner sides of the column, the chassis is welded to several columns; In step d, the ceiling and the side wall are connected correspondingly, and the second tooling assembly (3) clamps the ceiling; the ceiling and the side wall are welded; In step e, the rear end walls are correspondingly connected to the chassis, side walls and roof, the rear end walls on both sides of the car body are kept at a fixed distance, and the rear end walls are respectively welded to the chassis, side walls and roof. 9. A kind of rail train M car body assembly process according to claim 8, characterized in that, in said step b, according to the position of the car body chassis on the first tool assembly (2) and the required bottom frame and front-end frame positioning assembly, support column (22) horizontal slippage and/or longitudinal slippage, adjust the position of support column (22), adjust the spacing between several support columns (22); on support column (22), The positioning pin (22a) is aligned with the threaded hole of the front end frame, and the push rod (22b) abuts against the front end frame of the vehicle body upwards. 10. A rail train M car body assembly process according to claim 8, characterized in that, in said step c, according to the position of the car body chassis on the first tool assembly (2) and the required side The wall and the bottom frame are positioned and assembled, the movable frame (32) drives the support (34) and the first pressure piece (35) to slide laterally, the first pressure piece (35) is rotated, the side wall and the bottom frame are positioned and assembled, and the support (34) and the first pressing piece (35) clamp side wall.