CN103600192B - Welding fixture for urban rail vehicle traction beams - Google Patents

Abstract

Urban rail vehicle traction beam welding tooling belongs to the field of welding auxiliary fixtures for rail vehicle traction beams. The tooling includes a disc base (1), a base (2), a positioning block (3), a lateral clamping bolt (4), a lateral positioning Bolt (5), longitudinal clamping bolt (6) and pressure plate bolt (7). This welding tool is a unique design for the welding parts of the traction beam of the Iranian subway and the Wuhan dijiao line urban railway with arc groove and arc surface structure. The special structure with arc groove and arc surface on the beam is fixed and locked, and its disc base can be quickly matched with the interface disc of the positioner of the welding robot, so that the welding parts of the traction beam can be realized on the welding positioner. Accurate, reliable and rapid positioning, and then automatically complete the welding operation through the welding robot, while improving the welding efficiency and welding quality, it also eliminates the potential safety hazards of operators in traditional manual welding operations.

Description

Urban rail vehicle traction beam welding tooling

technical field

The invention belongs to the field of welding auxiliary fixtures for traction beams of rail vehicles, and in particular relates to a welding tool for traction beams of urban rail vehicles.

Background technique

During the welding process of the traction beam of urban rail vehicles, there are many types of welds and a large number of welds. At the same time, the workpiece of the traction beam is very heavy, which is not conducive to manual placement and turning into an ideal welding position. When the traditional manual welding operation method is used to weld and assemble the traction beam, the efficiency is low, the quality of the weld is difficult to guarantee, and the posture of the weldment is changed during the welding process, which is also prone to safety accidents such as burns and injuries to operators.

On the other hand, the OTC welding robot with a higher degree of automation can allow the welding manipulator to perform high-speed and precise welding of the spatial weld in a given coordinate system according to the pre-programmed instructions. However, since there is currently no tooling that can stably position the traction beam of the Iranian subway and Wuhan Dijiao Line on the positioner of the OTC welding machine, the welding operation of this traction beam cannot be completed by the OTC welding robot.

Contents of the invention

In order to solve the problem that there is currently no tooling that can stably position the traction beam of the Iranian subway and Wuhan Dijiao Line on the positioner of the OTC welding machine, resulting in the inability of this type of traction beam to be welded by an OTC welding robot; and traditional manual welding In this way, the attitude adjustment process of the traction beam workpiece is time-consuming, laborious and inefficient, and the operator cannot guarantee the technical problems of welding operation quality and operation safety. The invention provides a traction beam welding tool for urban rail vehicles.

The technical solution adopted by the present invention to solve the technical problems is as follows:

The urban rail car traction beam welding tool includes a disc base, a base, a positioning block, a transverse clamping bolt, a transverse positioning bolt, a longitudinal clamping bolt and a pressure plate bolt; the disc base is provided with a plurality of long slots, the A plurality of long slots are evenly distributed on the disc base, and the top of each long slot communicates with a round hole; the base includes two longitudinal beams and a cross beam, the longitudinal beam is a stepped structure, and the cross beam is welded vertically At the rear ends of the two longitudinal beams; a groove is provided at the front ends of the two longitudinal beams, a threaded hole is provided at the center of the bottom of the groove, and a transverse bolt hole is provided at the rear ends of the two longitudinal beams, A longitudinal bolt hole is provided at the center of the beam of the base; the positioning block is a rectangular structure, and a long through hole is provided at each of its two ends, and the width of the positioning block is smaller than the width of the groove; the bottom surface of the base is welded On the disc base, the horizontal clamping bolt and the horizontal positioning bolt are threadedly connected with the longitudinal beam of the base through a horizontal bolt hole, the longitudinal clamping bolt is threaded with the beam of the base through the longitudinal bolt hole, and the two pressure plate bolts are threaded through The overlong through hole is connected with the threaded hole, and the positioning block is slidably connected with two pressure plate bolts through the long through hole.

The optimal number of the above-mentioned elongated grooves is six, and the angle between two adjacent elongated grooves is 60°.

The beneficial effects of the present invention are: the welding tool is a unique design for the traction beam weldment of the Iranian subway and the Wuhan embankment line city iron with arc grooves and arc surface structures, and the positioning block and lock on the base Mechanisms such as tightening bolts can fix and lock the special structure with arc grooves and arc-shaped surfaces on the traction beam, and its disc base can quickly match with the interface disc of the positioner of the welding robot, so that the traction beam weldment Accurate, reliable and rapid positioning can be realized on the welding positioner, and then the welding operation can be automatically completed by the welding robot. While improving the welding efficiency and welding quality, it also eliminates the potential safety hazards of operators in traditional manual welding operations. The frock also has the advantages of simple and practical structure, convenient operation, low cost, easy popularization and the like.

Description of drawings

Fig. 1 is the perspective view of the welding frock of traction beam of urban rail car of the present invention;

Fig. 2 is the perspective view of disc base of the present invention;

Figure 3 is a perspective view of the base of the present invention;

Fig. 4 is a perspective view of the positioning block of the present invention;

Fig. 5 is a three-dimensional structure view of the semi-drawing beam to be welded in the embodiment of the present invention.

detailed description

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

As shown in Figures 1 to 4, the urban rail vehicle traction beam welding tooling of the present invention includes: a disc base 1, a base 2, a positioning block 3, a transverse clamping bolt 4, a transverse positioning bolt 5, and a longitudinal clamping bolt 6 and platen bolts 7.

The disc base 1 is provided with 6 elongated grooves 1-1, and the 6 elongated grooves 1-1 are evenly distributed on the disc base 1, and the angle between two adjacent elongated grooves 1-1 is 60°, the top of each elongated groove 1-1 communicates with a circular hole 1-2. The disk base 1 is designed in imitation of the interface disk of the positioner of the OTC welding robot, and its structural shape and size are the same as those of the interface disk of the positioner. Therefore, it can be quickly matched with the interface disc of the positioner to achieve accurate and reliable fixed connection.

The base 2 includes two longitudinal beams and a crossbeam, the longitudinal beam is a stepped structure, the two longitudinal beams are placed parallel to the same direction, and the crossbeam is vertically welded to the rear ends of the two longitudinal beams. A groove 2-1 is provided on the front ends of the upper end surfaces of the two longitudinal beams, a threaded hole 2-2 is provided at the center of the bottom of the groove 2-1, and a threaded hole 2-2 is provided on the rear end side walls of the two longitudinal beams. A horizontal bolt hole 2-4 is provided, and a longitudinal bolt hole 2-3 is provided at the center of the side wall of the beam.

The positioning block 3 is a rectangular structure, and its two ends are respectively provided with a radial elongated through hole 3-1. 2-1 Inner slight sliding adjustment, adapt to the structure of the workpiece to be fixed, and make the workpiece fixed reliably.

The bottom surfaces of the two longitudinal beams of the base 2 are welded on the disc base 1, and the long sides of the lower end surfaces of the two longitudinal beams must be perpendicular to the two long grooves 1-1 on the same diameter on the disc base 1 respectively during welding. , and try not to intersect with other long slots 1-1.

The horizontal clamping bolt 4 and the horizontal positioning bolt 5 are threadedly connected with the side wall of the longitudinal beam of the base 2 through a horizontal bolt hole 2-4 respectively, and the longitudinal clamping bolt 6 is connected with the beam side of the base 2 through the longitudinal bolt hole 2-3. The wall is threadedly connected, and the two pressure plate bolts 7 are connected to the threaded hole 2-2 through the elongated through hole 3-1, and the positioning block 3 is slidably connected to the two pressure plate bolts 7 through the elongated through hole 3-1.

As shown in Fig. 5, the Iranian subway traction beam to be butt-welded comprises two bent plates 8 (only one bent plate is drawn in the figure) and a cylinder 9, and the bent plates 8 are composed of a flat top plate 8-1, Arc bottom plate 8-2, first side plate 8-3, second side plate 8-4, third side plate 8-5 and fourth side plate 8-6 constitute, the first side plate 8-3 and the second The side plate 8-4 is an arc panel, the third side plate 8-5 and the fourth side plate 8-6 are plane plates, the second side plate 8-4, the third side plate 8-5 and the fourth side plate 8- An arc groove 8-7 is arranged between 6, and the welding tool of the present invention is an auxiliary positioning tool for welding the weld between the arc-shaped bottom plate 8-2 and the cylindrical tube 9.

When specifically applying the urban rail car traction beam welding tooling of the present invention, first rotate the horizontal clamping bolt 4 and the longitudinal clamping bolt 6, so that their screw rod ends respectively retreat into the screw holes on the side wall of the base 2, and then rotate the horizontal Locate the bolt 5 and make its nut end close to the inner side wall of the base 2, and then remove the two pressure plate bolts 7 together with the positioning block 3 from the groove 2-1. The outer end surface of the disc base 1 is docked with the positioner interface disc of the OTC welding robot, and the disc base 1 is fixedly connected to the positioner interface disc through the cooperation of the pressure plate bolts and the long groove 1-1.

The drawing beam to be welded is horizontally suspended and positioned, and its arc groove 8-7 opening is placed downward. Insert the bent plate assembly 8 into the drawing beam welding tooling of the present invention, make the flat top plate 8-1 against the inner end surface of the disc base 1, and make the third side plate 8-5 parallel to the bolt end surface of the transverse positioning bolt 5; Rotate the horizontal clamping bolt 4, the horizontal positioning bolt 5 and the longitudinal clamping bolt 6 respectively, so that the horizontal clamping bolt 4 is pressed against the second side plate 8-4, the horizontal positioning bolt 5 is pressed against the third side plate 8-5, and the vertical The clamping bolt 6 tightens the first side plate 8-3, and then respectively clamps and positions the second side plate 8-4, the third side plate 8-5, and the first side plate 8-3. Then, put the positioning block 3 in the two grooves 2-1, and block the inner sidewall of the arc groove 8-7 with the positioning block 3. Adjust the position of the positioning block 3 in the two grooves 2-1. When the lower side wall of the positioning block 3 is close to the side wall of the groove 2-1, the positioning block 3 is fixed by two pressure plate bolts 7, and then Complete the assembly process of the draw beam workpiece and the welding tool of the present invention.

So far, the drawing beam workpiece to be welded has been assembled and positioned with the positioner together with the tooling, and the welding seam between the arc-shaped bottom plate 8-2 of the drawing beam and the cylindrical tube 9 can be made by the OTC welding robot according to the welding seam in the space. The positional relationship is automatically completed.

Claims (2)

1. Urban rail car traction beam welding tool, characterized in that the tool includes a disc base (1), a base (2), a positioning block (3), a lateral clamping bolt (4), and a lateral positioning bolt (5) , longitudinal clamping bolts (6) and pressure plate bolts (7); The disc base (1) is provided with a plurality of elongated grooves (1-1), and the plurality of elongated grooves (1-1) are evenly distributed on the disc base (1), and each elongated groove ( The tops of 1-1) communicate with a circular hole (1-2); The base (2) includes two longitudinal beams and a crossbeam, the longitudinal beam is a stepped structure, and the crossbeam is vertically welded to the rear ends of the two longitudinal beams; the front ends of the two longitudinal beams are all provided with a groove (2- 1), a threaded hole (2-2) is provided at the center of the bottom of the groove (2-1), a horizontal bolt hole (2-4) is provided at the rear end of the two longitudinal beams, and the base (2-2) ) A longitudinal bolt hole (2-3) is provided at the center of the beam; The positioning block (3) has a rectangular structure, each of its two ends is provided with a strip-shaped through hole (3-1), and the width of the positioning block (3) is smaller than the width of the groove (2-1); The bottom surface of the base (2) is welded on the disc base (1), and the transverse clamping bolts (4) and the transverse positioning bolts (5) respectively pass through a transverse bolt hole (2-4) and the longitudinal direction of the base (2). The beam is threadedly connected, the longitudinal clamping bolt (6) is threaded with the beam of the base (2) through the longitudinal bolt hole (2-3), and the two pressure plate bolts (7) pass through the elongated through hole (3-1) It is connected with the threaded hole (2-2), and the positioning block (3) is slidably connected with two pressure plate bolts (7) through the elongated through hole (3-1). 2. The urban rail vehicle traction beam welding tool as claimed in claim 1, characterized in that, the number of the elongated grooves (1-1) is six, and two adjacent elongated grooves (1-1) The angle between them is 60°.