CN103770803B - Rail vehicle set trailer bogie frame - Google Patents

Abstract

The invention discloses a rail vehicle trailer bogie frame, which is composed of two side beams, two end beams, a main beam and two auxiliary beams, and the two end beams are respectively connected to the two side beams. The two ends of the main beam are fixedly connected to the middle of the two side beams, the two auxiliary beams are arranged on both sides of the main beam, and the two ends of the auxiliary beam are fixedly connected to the two side beams. On each of the side beams, the side beams and the main cross beam are box-shaped structures. The overall structure of the present invention is optimized, reducing and avoiding the occurrence of large stress areas, the strength and rigidity of the overall structure of the frame are greatly improved, the overall fatigue resistance of the frame is greatly improved, and the stress level of the overall frame is controlled within the range allowed by the strength It meets the safe operation requirements of high-speed rail vehicles. <!--1-->

Description

Rail vehicle trailer bogie frame

technical field

The invention relates to a bogie frame of a rail vehicle, in particular to a bogie frame of a trailer, and belongs to the technical field of rail vehicle manufacturing.

Background technique

The bogie is the running part of the rail vehicle, and the frame is the main structural part of the bogie. Various hangers and mounting seats for the primary and secondary suspension and braking of the bogie are welded on the frame. The acceleration of the vehicle plays a key role.

With the rapid development of high-speed rail vehicles such as EMUs and high-speed rail, the requirements for structural strength, fatigue resistance and lightweight of the frame are getting higher and higher. The existing frame structure cannot meet the operating requirements of high-speed rail vehicles.

Contents of the invention

The main purpose of the present invention is to solve the above problems and deficiencies, and provide a rail vehicle trailer bogie frame with optimized structure and greatly improved overall structural performance of the frame.

For realizing the above object, technical scheme of the present invention is:

A rail vehicle trailer bogie frame, consisting of two side beams, two end beams, a main beam and two auxiliary beams, the two end beams are respectively connected to the two ends of the two side beams, The two ends of the main beam are fixedly connected to the middle parts of the two side beams, the two auxiliary beams are arranged on both sides of the main beam, and the two ends of the auxiliary beam are fixedly connected to the two side beams. On the beam, the side beam and the main beam are box-shaped structures.

Further, the center of the main beam has an opening for inserting a traction pin.

Further, at the central opening of the main crossbeam, wear pads for running in with the traction pin are provided on two opposite inner sidewalls in the longitudinal direction thereof.

Further, the wear backing plate is a steel plate or a nylon plate.

Further, the lower surface of the main beam is flat, and the upper surface of the main beam is U-shaped with a downward concave in the middle.

Further, the main beam and the side beam are spliced and welded by the top plate, the bottom plate and the side plate.

Further, at least one end of each side beam or end beam is welded and fixed with a brake cylinder installation seat.

Further, brake hangers are correspondingly welded and fixed on the auxiliary beam and the end beam.

Further, a brake lever seat is welded and fixed on the end beam, and a brake lever seat is welded and fixed on the auxiliary beam correspondingly.

In summary, the rail vehicle trailer bogie frame of the present invention has an optimized overall structure, reduces and avoids the occurrence of large stress areas, greatly improves the strength and rigidity of the overall structure of the frame, and greatly improves the overall fatigue resistance of the frame. Improve, so that the stress level of the overall structure is controlled within the range allowed by the strength, meeting the safe operation requirements of high-speed rail vehicles.

Instructions attached

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a schematic front view of the structure of the present invention;

Fig. 3 is the bottom view of Fig. 2;

Fig. 4 is the side view of Fig. 2;

Fig. 5 is a schematic diagram of the overall structure of the bogie of the present invention.

As shown in Figures 1 to 5, side beam 1, end beam 2, main beam 3, auxiliary beam 4, opening 5, wear plate 6, frame 7, frame 8, secondary spring seat 9, brake lever 10, Brake lever seat 11, pulley seat 12, brake cylinder 13, brake cylinder mount 14, brake unit 15, brake suspender 16, brake crank arm 17, brake crank arm seat 18.

specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figures 1 to 5, a rail vehicle trailer bogie frame is used for a trailer bogie in a rail vehicle, consisting of two side beams 1, two end beams 2, a main beam 3 and two auxiliary beams 4 are connected into an integral frame structure by welding. The frame 7 adopts an integral welded structure, which can improve the strength and rigidity of the overall structure of the frame, and can improve the connection stability of the equipment, and can effectively simplify the connection structure between the beams and meet the lightweight requirements.

As shown in Figures 1 and 3, the two side beams 1 are box-shaped structures, which are spliced by welding the top plate, bottom plate and two side plates, and the top plate, bottom plate and two side plates are all made of steel plates. The side beam 1 generally has a U-shaped structure with a downward recess in the middle, which can reduce the height of the main beam 3 relative to the rail surface, and can also provide enough space for fixing the bolster. A number of stiffeners (not shown in the figure) are welded in the box-shaped structure of the side beam 1, and the box-shaped structure with inner stiffeners greatly improves the overall structural strength and rigidity of the frame.

As shown in Figures 1 and 2, two auxiliary beams 4 are symmetrically arranged on both sides of the main beam 3, and the two ends of the auxiliary beam 4 are welded and fixedly connected to the inner side plates of the two side beams 1, and the two auxiliary beams 4 The use of seamless steel pipe not only does not reduce the overall strength, but also reduces a lot of welds, and the structural manufacturability is greatly improved.

The two ends of the main beam 3 are respectively welded and fixed to the middle of the inner side panels of the side beams 1 on both sides, and U-shaped cross-joint is adopted to ensure the strength of the joint. The main beam 3 is a box-shaped structure to improve the strength and rigidity of the entire frame 8 , and the center of the main beam 3 has an opening 5 . The main beam 3 is spliced by welding with a top plate with an opening, a bottom plate with an opening, an outer side plate, and an inner side plate of the opening. The top plate, the bottom plate, the outer side plate, and the inner side plate of the opening are all made of steel plates. A plurality of stiffener plates (not shown in the figure) are welded in the box structure. The structural strength and rigidity of the main beam 3 can be improved by adopting a box-shaped structure with stiffeners inside, and can avoid the appearance of large stress areas, so that the overall anti-fatigue performance of the frame is greatly improved. As shown in Figure 4, in order to further improve the strength and rigidity of the main beam 3, the lower surface of the main beam 3 is a plane, and the upper surface of the main beam 3 is a U-shaped structure with a downward concave in the middle, and the main beam 3 adopts a concave U shape. Shaped structure can also provide enough installation space for bolster 7.

The top of the traction pin is fixed on the bolster, and the traction pin is inserted in the opening 5 in the middle of the main beam 3. The shape of the opening 5 can be circular or square. In this embodiment, the shape of the opening 5 is circular, and the size of the opening 5 is the same as The size of the traction pin is matched, so that the traction pin is just in the opening 5 and will not produce a large shake. During the operation of the vehicle, the main beam 3 is in contact with the traction pin, and the main beam 3 is used to transmit the force to the traction pin. It is transmitted to the bolster and the car body by the traction pin. In order to avoid wear and tear due to direct contact between the traction pin and the main beam 3 during the operation of the vehicle, a wear backing plate 6 for running in with the traction pin is provided on the inner side wall of the middle opening 5 of the main beam 3, the wear backing plate 6 Steel plate or nylon plate can be selected according to the material of the traction pin, and the wear backing plate 6 is fixed on the main beam 3 by glue, or fixed on the main beam 3 by fasteners such as screws.

As shown in Figures 1 and 2, the two end beams 2 are respectively connected to the two ends of the two side beams 1, and the two ends of the end beams 2 are welded and fixed on the inner side plates of the side beams 1 on both sides, and the end beams 2 The setting can improve the strength and stiffness of the whole frame. The two end beams 2 are made of seamless steel pipes, so that not only the overall strength is not reduced, but also many weld seams are reduced, and the structural manufacturability is greatly improved.

As shown in Figures 1 to 5, the frame is connected to the vehicle body through a bolster, and the downwardly recessed parts in the middle of the two side beams 1 are respectively provided with secondary spring seats 9 for mounting and fixing secondary springs.

As shown in Figure 5, in this embodiment, the two ends of the end beam 1 on one side are welded and fixed with a brake cylinder mounting seat 14 for installing and fixing the brake cylinder 13, and two brake cylinders are fixedly installed on the frame 7. The moving cylinder 13 is arranged at one end of the frame 7 . The brake cylinder is installed and fixed on the two ends of the end beam 2, the brake cylinder 13 is fixed on the brake cylinder mounting seat 14 by bolts, and the brake cylinder 13 is set at the end to make full use of the space under the vehicle and ensure that the vehicle body After sinking, it does not interfere with the bogie.

As shown in Figure 5, a brake hanger 16 is welded and fixed correspondingly on the beam 4 and the end beam 2, and each beam 4 and the end beam 2 are respectively provided with two brake hangers 16, and the brake hanger 16 The suspension rod is connected to the top, and the suspension rod supports the brake unit 15 below the frame 7 to realize the suspension of the brake unit 15. This suspension method has simple structure, large lateral margin and stronger adaptability.

As shown in Figure 5, two brake lever seats 18 are welded and fixed on each end beam 2, and the brake lever seats 18 are used to fix and support the brake levers 17 corresponding to the brake cylinders 13 at both ends. Correspondingly, a brake lever seat 11 is welded and fixed on the auxiliary beam 4, and the brake lever seat 11 is used to fix and support the brake lever 10 connected with the brake lever 17. The hinge of the brake cylinder 13 is hinged with the brake lever 17, and the movement of the brake along the transverse direction of the frame is converted into the longitudinal movement of the connecting rod. The brake lever 17 is hinged with the brake lever 10, and the brake lever 10 is connected with the brake The brake unit 15 is connected, and then the brake unit 15 is braked through the brake cylinder 13.

On the end beam 2 at one end, a pulley seat 12 is also welded and fixed, and the hand brake wire rope is connected to the brake cylinder 13 by the pulley block on the pulley seat, so that the personnel can complete the hand brake on the car.

The above-mentioned structure optimizes the overall structure of the frame 7, reduces and avoids the occurrence of large stress areas, greatly improves the overall fatigue resistance of the frame, and controls the stress level of the overall frame within the allowable range of strength, which can fully meet the needs of various domestic industries. Different railway conditions and operating requirements of 160 kilometers per hour.

As mentioned above, a similar technical solution can be derived in combination with the solutions presented in the drawings and the embodiments. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solutions of the present invention.

Claims (7)

1. a rail vehicle set trailer bogie frame, it is characterized in that: by two curb girders, two end carriages, one main beam and two auxiliary crossbeam compositions, two described end carriages are connected to the both ends of two described curb girders, the two ends of described main beam are fixedly connected on the middle part of two described curb girders, two described auxiliary crossbeams are arranged on the both sides of described main beam, the two ends of described auxiliary crossbeam are fixedly connected on two described curb girders, described end carriage is seamless steel pipe, the two ends of described end carriage are passed the curb girder of both sides and are weldingly fixed on curb girder, described curb girder and described main beam are box structure, the center of described main beam has one for inserting the opening of towing pin, the size of opening and the size of towing pin match, the lower surface of described main beam is plane, the upper surface of described main beam is middle to recessed U-shaped structure.

2. rail vehicle set trailer bogie frame according to claim 1, it is characterised in that: at the central opening place of described main beam, two relative medial walls of its longitudinal direction are provided with for the abrasion backing plate with towing pin break-in.

3. rail vehicle set trailer bogie frame according to claim 2, it is characterised in that: described abrasion backing plate is steel plate or nylon sheet.

4. rail vehicle set trailer bogie frame according to claim 1, it is characterised in that: described main beam and curb girder are welded for being spliced by top board, base plate and side plate.

5. rail vehicle set trailer bogie frame according to claim 1, it is characterised in that: at least one end of each described curb girder or end carriage, it is welded with checking cylinder mounting seat.

6. rail vehicle set trailer bogie frame according to claim 1, it is characterised in that: corresponding on described auxiliary crossbeam and end carriage it is welded with braking flap seat.

7. rail vehicle set trailer bogie frame according to claim 1, it is characterised in that: on described end carriage, it is welded with braking connecting lever seat, on described auxiliary crossbeam, is welded with brake lever seat accordingly.