Axle box built-in bogie frame

Abstract

The present invention provides an axle box built-in bogie frame, which relates to the technical field of power bogies for rail vehicles, and comprises a cross beam and side beams fixed to the four corners of the cross beam, a single air spring mounting seat is fixed to the middle of the cross beam, and a traction rod mounting cavity is arranged in the single air spring mounting seat. The axle box built-in structure makes the cross beam of the frame shorter, which is beneficial to increase the rigidity of the frame and reduce its deadweight, improve the dynamic performance, facilitate passing through small radius curve tracks, reduce curve wheel-rail wear and improve curve passing performance.

Description

Technical Field

[0001] The invention relates to the technical field of power bogies for rail vehicles, and in particular to a bogie frame with an internal axle box. Background Art

[0002] The bogie frame refers to the part of the rail vehicle that is responsible for bearing the body and transmitting the weight of the body. It is one of the most important key components of the rail vehicle. First of all, bearing the weight of the body is the most basic requirement for the bogie frame. It can make adaptive adjustments for rail vehicles when running on curves, so that the vehicle can run along the rails flexibly, safely and smoothly, and reliably withstand various forces acting on the vehicle and transmit the force to the wheels in a balanced manner. Secondly, in order to achieve effective acceleration and deceleration of the vehicle, the frame must identify the movement form of the bogie and the body to prevent excessive relative displacement between the bogie and the body. Furthermore, the frame plays the role of connecting the primary suspension device and the secondary suspension device, which is used to reduce the upward transmission of vehicle vibration and wheelset vibration, and ensure the smooth operation of the vehicle.

[0003] The traditional bogie frame structure is bulky and heavy, making it difficult to serve on small-radius curved lines. It has poor adaptability to line distortion, which increases wheel-rail wear and has high operating and maintenance costs. The large mass of the bogie frame increases the sprung mass, causing the action force transmitted to the rails to increase, and also increases the lateral impact force on the bearings, which to a certain extent affects the stability and comfort of rail vehicle operation. Summary of the invention

[0004] In view of the above problems in the prior art, the present invention provides a bogie frame for a rail vehicle, which solves the problems in the prior art that the bogie frame for rail vehicles has a bulky structure and poor adaptability to line distortion.

[0005] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0006] Provided is an axle box built-in bogie frame, comprising a cross beam and side beams fixed on the four corners of the cross beam, a single air spring mounting seat fixed to the middle of the cross beam, and a traction rod mounting cavity arranged in the single air spring mounting seat.

[0007] Furthermore, the side beam includes a first side beam, a second side beam, a third side beam and a fourth side beam arranged in a clockwise direction, the first side beam and the second side beam are arranged on the same side and are collinear, the third side beam and the fourth side beam are arranged on the same side and are collinear, and the first side beam is parallel to the fourth side beam.

[0008] Furthermore, an axle box rigid spring installation cavity and a primary axle box vertical shock absorber installation seat are provided on the bottom surfaces of the first side beam, the second side beam, the third side beam and the fourth side beam away from one end of the cross beam.

[0009] Furthermore, a basic brake device mounting seat is respectively fixed to the outer side of one end of the first side beam, the second side beam, the third side beam and the fourth side beam adjacent to the cross beam.

[0010] Furthermore, a rotating arm type positioning node mounting seat is fixed on the bottom surface of the first side beam, the second side beam, the third side beam and the fourth side beam adjacent to one end of the cross beam.

[0011] Furthermore, an anti-snaking shock absorber mounting seat is respectively fixed on the top surface of one end of the first side beam and the third side beam adjacent to the cross beam.

[0012] Furthermore, a secondary lateral shock absorber mounting seat is fixed to the inner side of the second side beam and the fourth side beam respectively.

[0013] Furthermore, a secondary vertical shock absorber mounting seat is fixed on both sides of the crossbeam.

[0014] Furthermore, a motor hanger is fixed to the front end and the rear end of the crossbeam respectively.

[0015] Furthermore, an anti-roll torsion bar mounting seat is fixed on the bottom surface of the crossbeam.

[0016] The beneficial effects of the present invention are as follows: the frame is an axle box built-in frame, so that the wheels of the rail vehicle are located outside the frame, which can shield noise, and can shorten the crossbeam of the frame, making the entire frame structure compact, which is beneficial to increasing the rigidity of the frame and reducing its own weight.

[0017] The crossbeam is cross-shaped, which can increase its strength; the single air spring mounting seat set in the middle of the crossbeam is used to install an air spring. The single air spring form can reduce the rotational stiffness of the bogie using this frame, making it easier to pass through small radius curved tracks, and can reduce the wheel impact angle, wheel-rail wear, wheel-rail lateral force and wheel axle lateral force of the inner suspension bogie, reduce curve wheel-rail wear and improve curve passing performance. A traction rod mounting cavity is set in the single air spring mounting seat, so that the traction rod can be directly installed in the center pin hole in the air spring, eliminating the additional traction rod mounting seat, making the structure of the frame more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a top view of the bogie frame with an internal axle box.

[0019] Figure 2 It is a bottom-view stereoscopic view of the bogie frame with built-in axle box.

[0020] Among them, 1. cross beam; 2. side beam; 21. first side beam; 22. second side beam; 23. third side beam; 24. fourth side beam; 3. single air spring mounting seat; 4. traction rod mounting cavity; 5. anti-snaking shock absorber mounting seat; 6. basic brake device mounting seat; 7. second series vertical shock absorber mounting seat; 8. second series lateral shock absorber mounting seat; 9. motor hanger; 10. anti-roll torsion bar mounting seat; 11. swing arm type positioning node mounting seat; 12. axle box rigid spring mounting cavity; 13. first series axle box vertical shock absorber mounting seat; 14. height control valve mounting seat; 15. frame lifting seat. DETAILED DESCRIPTION

[0021] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0022] like Figure 1 As shown, the bogie frame with built-in axle box includes a cross-shaped crossbeam 1 and side beams 2 fixed on the four corners of the crossbeam 1, a single air spring mounting seat 3 is fixed in the middle of the crossbeam 1, and a traction rod mounting cavity 4 is arranged in the single air spring mounting seat 3.

[0023] The side beam 2 includes a first side beam 21, a second side beam 22, a third side beam 23 and a fourth side beam 24 arranged in a clockwise direction. The first side beam 21 and the second side beam 22 are arranged on the same side and are collinear, the third side beam 23 and the fourth side beam 24 are arranged on the same side and are collinear, and the first side beam 21 is parallel to the fourth side beam 24.

[0024] like Figure 2 As shown, the bottom surfaces of the first side beam 21, the second side beam 22, the third side beam 23 and the fourth side beam 24 away from the cross beam 1 are all provided with axle box rigid spring installation cavity 12 and a primary axle box vertical damper installation seat 13. The end of the axle box rigid spring is tightly attached to the axle box rigid spring installation cavity 12. The axle box rigid spring is used to transfer the frame and the upper load of the frame to the wheelset and then to the rails, and is a load-bearing component. The primary axle box vertical damper installation seat 13 is located at the end of each side beam away from the cross beam 1, and is used to install a primary axle box vertical damper to attenuate the vibration energy transmitted between the axle box and the frame.

[0025] A basic brake device mounting seat 6 is fixed to the outer side of the first side beam 21, the second side beam 22, the third side beam 23 and the fourth side beam 24 adjacent to one end of the cross beam 1. The bogie applicable to the frame in this scheme is driven by an axle-holding permanent magnet direct drive motor, and a wheel disc brake is required as the basic brake, so the basic brake device mounting seat 6 is welded to the outer side of each side beam, and the basic brake device is connected by bolts. A basic brake device is correspondingly provided on each wheel, so four basic brake device mounting seats 6 are distributed on this frame.

[0026] A pivoting arm type positioning node mounting seat 11 is fixed to the bottom surface of the first side beam 21, the second side beam 22, the third side beam 23 and the fourth side beam 24 adjacent to one end of the cross beam 1. The pivoting arm type positioning node mounting seat 11 is installed with a pivoting arm type positioning device by bolts, and one end of the pivoting arm type positioning device is installed in the pivoting arm type positioning node mounting seat 11 through an elastic rubber positioning node, which plays a role in positioning the axle box and restricts the movement of the axle box inside this mounting seat.

[0027] An anti-snaking damper mounting seat 5 is fixed to the top surface of one end of the first side beam 21 and the third side beam 23 adjacent to the cross beam 1. The anti-snaking damper mounting seat 5 is bolted to the rubber node at one end of the anti-snaking damper, and the other end of the anti-snaking damper is mounted on the vehicle body to attenuate the snaking self-excited motion and ensure safe operation.

[0028] A secondary lateral shock absorber mounting seat 8 is fixed to the inner side of the second side beam 22 and the fourth side beam 24, that is, two secondary lateral shock absorber mounting seats 8 are provided in the frame for mounting the secondary lateral shock absorbers. The rubber node at one end of the secondary lateral shock absorber is bolted to the secondary lateral shock absorber mounting seat 8, and the other end is hinged to the vehicle body chassis to attenuate the lateral vibration energy between the vehicle body and the frame.

[0029] A secondary vertical shock absorber mounting seat 7 is fixed on both sides of the cross beam 1, that is, a secondary vertical shock absorber mounting seat 7 is installed on the left and right sides of the frame for mounting the secondary vertical shock absorber. The rubber node at one end of the secondary vertical shock absorber is installed on the secondary vertical shock absorber mounting seat 7, and the other end is installed at the bottom of the bolster above the single air spring to attenuate the vibration transmitted between the vehicle body and the frame to ensure the stability and comfort of the vehicle during operation.

[0030] A motor hanger 9 is fixed to the front and rear ends of the cross beam 1, respectively. The motor hanger 9 is welded to the front and rear ends of the cross beam 1 and is used to hang the permanent magnet DC traction motor as a driving device. The permanent magnet DC traction motor is installed on the axle through a hollow shaft device. In order to ensure the reliability and stability of the motor installation, the permanent magnet DC traction motor needs to be hinged by a motor hanger 9 through a pull rod device. Since the front and rear ends of the bogie to which the present frame is applicable are both powered wheels, a motor hanger 9 is provided on the front and rear ends of the cross beam 1.

[0031] An anti-roll torsion bar mounting seat 10 is fixed on the bottom surface of the cross beam 1. The anti-roll torsion bar mounting seat 10 is welded to the middle of the bottom surface of the cross beam 1 and is used to install two anti-roll torsion bar devices. The torsion bars of the anti-roll torsion bar devices are hinged to the anti-roll torsion bar mounting seat 10 along the length direction of the cross beam. Since only a single air spring is installed in this frame, the roll stiffness of the frame is greatly reduced. The anti-roll torsion bar device is installed by the anti-roll torsion bar mounting seat 10 to prevent excessive tilting of the vehicle body, thereby ensuring riding comfort and driving safety.

[0032] A height control valve mounting seat 14 is also welded on the outside of the side beam 2. The height control valve mounting seat 14 is used to install a height control valve. The height of the single air spring located in the middle of the cross beam 1 is controlled by the height control valve to ensure good performance of the single air spring.

[0033] A frame hoisting seat 15 is welded on the outer side of the first side beam 21, the second side beam 22, the third side beam 23 and the fourth side beam 24 respectively, for allowing ropes to pass through, so as to facilitate the hoisting of the frame. When assembling the frame with the wheelset, the frame is hoisted by a crane through the frame hoisting seat 15, and then assembled. The frame hoisting seat 15 is the force point for hoisting the frame.

Claims

1. A bogie frame with built-in axle box, characterized in that: It comprises a cross-shaped crossbeam (1) and side beams (2) fixed to the four corners of the crossbeam (1); a single air spring mounting seat (3) is fixed to the middle of the crossbeam (1); a traction rod mounting cavity (4) is provided in the single air spring mounting seat (3); The side beam (2) comprises a first side beam (21), a second side beam (22), a third side beam (23) and a fourth side beam (24) arranged in a clockwise direction, the first side beam (21) and the second side beam (22) are arranged on the same side and in a collinear manner, the third side beam (23) and the fourth side beam (24) are arranged on the same side and in a collinear manner, and the first side beam (21) is parallel to the fourth side beam (24); An axle box rigid spring mounting cavity (12) and a first axle box vertical damper mounting seat (13) are provided on the bottom surfaces of the first side beam (21), the second side beam (22), the third side beam (23) and the fourth side beam (24) at one end away from the cross beam (1); A basic brake device mounting seat (6) is respectively fixed to the outer side of the first side beam (21), the second side beam (22), the third side beam (23) and the fourth side beam (24) adjacent to one end of the cross beam (1).

2. The bogie frame with built-in axle box according to claim 1, characterized in that: A rotating arm type positioning node mounting seat (11) is fixed on the bottom surface of each of the first side beam (21), the second side beam (22), the third side beam (23) and the fourth side beam (24) adjacent to one end of the cross beam (1).

3. The bogie frame with built-in axle box according to claim 1, characterized in that: An anti-snaking shock absorber mounting seat (5) is respectively fixed on the top surface of one end of the first side beam (21) and the third side beam (23) adjacent to the cross beam (1).

4. The bogie frame with built-in axle box according to claim 1, characterized in that: A secondary lateral shock absorber mounting seat (8) is fixed to the inner side of each of the second side beam (22) and the fourth side beam (24).

5. The bogie frame with built-in axle box according to claim 1, characterized in that: A secondary vertical shock absorber mounting seat (7) is respectively fixed on both sides of the crossbeam (1).

6. The bogie frame with built-in axle box according to claim 1, characterized in that: A motor hanger (9) is respectively fixed to the front end and the rear end of the crossbeam (1).

7. The bogie frame with built-in axle box according to claim 1, characterized in that: An anti-roll torsion bar mounting seat (10) is fixed on the bottom surface of the crossbeam (1).

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