A roll control system without a torsion bar

Abstract

The application discloses a lateral roll resisting system without torsion rod shaft, which is composed of two independent lateral roll resisting devices respectively installed between bogies and carriages on two sides of a train. Each lateral roll resisting device comprises a connecting rod, a torsion arm, an outer shell and a torsion shaft. A section of the torsion shaft is located in the inner space of the outer shell, and an elastic torsion member is arranged between the outer periphery of the torsion shaft and the inner wall of the outer shell, so that the elastic torque of the torsion shaft is greater than zero when the torsion shaft rotates. The outer shell is fixed on the bogie, the outer end of the torsion shaft is fixedly connected with one end of the torsion arm perpendicularly to the torsion arm, the other end of the torsion arm is rotatably connected with the lower end of the connecting rod, and the upper end of the connecting rod is connected with the carriage. When the distance between the carriage and the bogie on one side changes, the elastic resistance against the distance change is provided by the elastic torsion member in the lateral roll resisting device on the side. The lateral roll resisting system has the advantages that the torsion rod shaft is not arranged in the middle, so that other components on the bogie can be freely arranged; and if the torsion stiffness of the lateral roll resisting device is found to be unsuitable, the lateral roll resisting device can be conveniently disassembled and replaced.

Description

Technical Field

[0001] This invention relates to an anti-roll system without a torsion bar shaft, belonging to the field of anti-roll technology for train bogies. Background Technology

[0002] Anti-roll torsion bar systems are used in rail transit vehicles, such as urban rail transit vehicles, high-speed trains, and mainline railway vehicles, to suppress vehicle roll during cornering, crosswinds, and other conditions. Figure 6 As shown, the torsion bar system consists of a vertical connecting rod 1, a torsion arm 2, a support assembly, and a torsion bar shaft 15, and is a key component of rail transit vehicles.

[0003] In a traditional torsion bar system, the upper end of the vertical connecting rod 1 is connected to the vehicle body, and the support assembly is connected to the bogie. When the vehicle rolls, one end of the torsion bar shaft 15 moves upward with the vehicle body, while the other end moves downward. Therefore, the movements of the two connecting rods 1 in different directions are transmitted to the torsion bar shaft 15 through the torsion arm 2, causing the torsion bar shaft 15 to twist. The reaction force generated by the torsional deformation of the torsion bar shaft 15 suppresses the vehicle's roll.

[0004] The invention and application of anti-roll torsion bar systems have made significant technological contributions to the development of rail transit, but they also have the following drawbacks: First, the torsion bar shaft 15 of the anti-roll torsion bar system needs to run through the bogie frame, which requires a certain amount of installation space. The installation of other components must give way to it, which has caused great difficulties in the design and manufacture of bogies with very limited installation space.

[0005] Secondly, it is inconvenient to disassemble, install, and replace. When anti-roll torsion bar systems are installed in batches on trains, it is impossible to accurately know the track conditions, roadbed conditions, curve radius, and wind conditions of each train's operating area or section. The stiffness of the uniformly assembled torsion bar shaft 15 may not match the track conditions and wind conditions of the section in which it is operated. However, it is very difficult to disassemble and replace it once it is known that the stiffness of the already installed torsion bar shaft 15 is unsuitable. In general, in such cases, people usually choose to make do with it. This is very detrimental to the comfort of the train, the coordination of the train itself, and the safety of driving. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to reduce the space occupied by the anti-roll system on the bogie installation and how to make the anti-roll system easy to replace and adjust to adapt to torsional stiffness.

[0007] To address the above problems, the technical solution proposed by this invention is as follows: A roll-resistance system without a torsion bar shaft consists of two independent roll-resistance devices installed between the bogies and the cars on both sides of the train. Each roll-resistance device includes a connecting rod, a torsion arm, a housing, and a torsion shaft. One section of the torsion shaft is located within the inner space of the housing, and an elastic torsion member is provided between its outer periphery and the inner wall of the housing, so that the torsion shaft has an elastic torque greater than zero when it rotates. The housing is fixed to the bogie. The outer end of the torsion shaft is fixedly connected to one end of the torsion arm perpendicularly to the torsion arm. The other end of the torsion arm is rotatably connected to the lower end of the connecting rod. The upper end of the connecting rod is connected to the car. When the distance between one car and the bogie changes, the elastic torsion member in the roll-resistance device on that side provides elastic resistance to resist the change in distance.

[0008] The torsion component is a rubber body.

[0009] The torsion element is a metal torsion spring.

[0010] The rubber body is annular, with a vulcanized and bonded metal inner and outer sleeves on its outer periphery and inner wall. The inner sleeve, rubber body, and outer sleeve constitute a rubber ball joint. The inner wall of the inner sleeve is fitted onto the outer periphery of the torsion shaft by an interference fit, and the outer sleeve is fitted onto the inner wall of the outer shell by an interference fit.

[0011] The inner wall of the front end of the outer shell has an annular inner flange formed by radial inward stretching, which is used to block the front end of the outer sleeve of the rubber ball joint.

[0012] The front end of the outer casing has a mounting plate, and the mounting plate has bolt mounting holes around its perimeter.

[0013] The anti-rollover device also includes a front sealing dustproof assembly, which includes a sealing ring, a dustproof cover with a central through hole, and a pressure plate. The sealing ring presses against the front side of the annular inner flange, the outer edge of the dustproof cover presses against the sealing ring, and the pressure plate presses the dustproof cover forward. The pressure plate itself is fixed to the mounting plate by bolts.

[0014] The dust cover is a trumpet-shaped cover with a rearward opening and a conical outer cover surface. The pressure plate presses on the outer cover surface. The rear end of the dust cover has a cup-shaped support with a rearward opening, so that a gap space is formed between the outer cover surface and the cup-shaped support. The joint between the cover and the cup-shaped support in the gap space section forms a small-diameter neck. The inner wall of the through hole at the neck is pressed against the outer periphery of the torsion shaft.

[0015] The rear end of the outer casing has a rear sealing end cap fixed to the rear end face of the outer casing, and the front side of the rear sealing end cap has a stop ring that extends forward into the outer casing to block the rear end of the rubber ball joint outer sleeve.

[0016] A front stop ring and a rear stop ring made of elastic material are provided on the torsion shaft to restrict the front and rear ends of the rubber ball joint inner sleeve, respectively. A wear-resistant plate is provided between the rear stop ring and the rear sealing end cover. Beneficial effects

[0017] 1. The anti-roll devices on both sides of the bogie are installed independently, each independently resisting the change in distance between the car body on its side and the bogie, eliminating the need for a torsion bar shaft in the middle, allowing other components on the bogie to be arranged freely; 2. If the anti-roll torsional stiffness is found to be unsuitable, it can be easily installed, disassembled and replaced. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the anti-rollover device; Figure 2 This is a cross-sectional schematic diagram of the anti-rollover device; Figure 3 This is a cross-sectional schematic diagram of the dust cover; Figure 4 This is a three-dimensional diagram showing the disassembled front part of the anti-roll device; Figure 5 This is a three-dimensional diagram showing the disassembled rear part of the anti-roll device; Figure 6 A three-dimensional schematic diagram of an existing anti-roll torsion bar system.

[0019] In the diagram: 1. Connecting rod; 2. Torsion arm; 3. Torsion shaft; 4. Outer shell; 401. Inner flange; 402. Mounting plate; 4021. Bolt mounting hole; 5. Rubber body; 6. Inner sleeve; 7. Outer sleeve; 8. Sealing ring; 9. Dust cover; 901. Outer cover surface; 902. Cup-shaped support; 903. Spacer; 904. Neck; 905. Inner wall of through hole; 10. Pressure plate; 11. Rear sealing end cover; 1101. Stop ring; 12. Wear plate; 13. Front stop ring; 14. Rear stop ring; 15. Torsion bar shaft. Detailed Implementation

[0020] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1

[0021] like Figure 1 , 2As shown, an anti-roll bar system without a torsion bar shaft consists of two independent anti-roll devices installed between the bogies and the cars on both sides of the train. There are no dedicated components connecting the two anti-roll devices, and they operate independently. Each anti-roll device includes a connecting rod 1, a torsion arm 2, a housing 4, and a torsion shaft 3. One section of the torsion shaft 3 is located within the inner space of the housing 4, and an elastic torsion member is provided between its outer periphery and the inner wall of the housing 4, giving the torsion shaft 3 a greater than zero elastic torque when it rotates. The housing 4 is fixed to the bogie. The outer end of the torsion shaft 3 is fixedly connected to one end of the torsion arm 2 perpendicularly to the torsion arm 2. The other end of the torsion arm 2 is rotatably connected to the lower end of the connecting rod 1, and the upper end of the connecting rod 1 is connected to the car. When the distance between one car and the bogie changes, the elastic torsion member in the anti-roll device on that side provides elastic resistance to resist this change in distance, thereby suppressing the lateral torsion of the car and ensuring driving safety. In this way, since there is no torsion bar shaft between the anti-roll devices on both sides of the bogie, the layout of other components on the bogie is more compact and reasonable. At the same time, the anti-roll devices on both sides of the bogie are installed independently, and there are no other fixed components to block the installation position. Therefore, if it is found that the torsional stiffness of the anti-roll device is not suitable for the anti-roll requirements of the actual running line, it can be easily disassembled and replaced.

[0022] Preferably, the torsion member in this embodiment is a rubber body 5.

[0023] like Figure 2 , 5 As shown, 5 is annular, with an inner sleeve 6 and an outer sleeve 7 made of vulcanized and bonded metal on its outer circumference and inner wall. The inner sleeve 6, rubber body 5, and outer sleeve 7 form a rubber ball joint. The inner wall of the inner sleeve 6 is fitted onto the outer circumference of the torsion shaft 3 via an interference fit, achieving a fixed connection between the outer circumference of the torsion shaft 3 and the inner wall of the rubber body 5. The outer sleeve 7 is fitted onto the inner wall of the outer shell 4 via an interference fit, achieving a fixed connection between the outer circumference of the rubber body 5 and the inner wall of the outer shell 4. Here, the vulcanized inner sleeve 6 and outer sleeve 7 on the inside and outside of the rubber body 5 facilitate the assembly of the rubber body 5 between the torsion shaft 3 and the outer shell 4.

[0024] The inner wall of the front end of the outer shell 4 has an annular inner flange 401 formed by radial inward stretching, which is used to block the front end of the outer sleeve 7 of the rubber ball joint.

[0025] like Figure 2 , 4 As shown in Figure 5, there is a mounting plate 402 at the front end of the outer shell 4, and bolt mounting holes 4021 around the periphery of the mounting plate 402. The outer shell 4 is fixed to the bogie by bolts and through the mounting plate 402.

[0026] like Figure 2 , 3As shown, the anti-rollover device also includes a front sealing dustproof assembly, which includes a sealing ring 8, a dust cover 9 with a central through hole, and a pressure plate 10. The sealing ring 8 presses against the front side of the annular inner flange 401, the outer edge of the dust cover 9 presses against the sealing ring 8, and the pressure plate 10 presses the dust cover 9 forward, and is itself fixed to the mounting plate 402 by bolts. This achieves a dustproof seal for the rubber ball joint at the front end of the housing.

[0027] The dust cover 9 has a rearward-opening trumpet shape and a conical outer cover surface 901. A pressure plate 10 presses against the outer cover surface 901, ensuring a tight fit between the pressure plate 10 and the conical outer cover surface 901 as the pressure plate 10 is pushed backward. The rear end of the dust cover 9 has a rearward-opening cup-shaped support 902, creating a space 903 between the outer cover surface 901 and the cup-shaped support 902. During application, the cup-shaped support 902's opening abuts against the torsion arm 2, and the space 903 provides installation space for the pressure plate 10. A small-diameter neck 904 is formed at the junction of the cover and the cup-shaped support 902 within the space 903. The inner wall 905 of the through-hole at the neck 904 presses against the outer periphery of the torsion shaft 3.

[0028] like Figure 2 , 5 As shown, a rear sealing end cap 11 is fixed to the rear end face of the outer casing 4 at the rear end. The front side of the rear sealing end cap 11 has a stop ring 1101 that extends forward into the outer casing to block the rear end of the rubber ball joint sleeve 7. In this way, not only is the rear end of the rubber ball joint sleeve 7 blocked forward, but a dustproof seal is also achieved at the rear of the outer casing 4.

[0029] like Figure 2 , 5 As shown, a front stop ring 13 and a rear stop ring 14 made of elastic material are provided on the torsion shaft 3, which are used to restrict the front end and rear end of the rubber ball joint inner sleeve 6, respectively. A wear-resistant plate 12 is provided between the rear stop ring 14 and the rear sealing end cover 11.

[0030] like Figure 2 , 4 As shown in Figure 5, an external spline is provided at the front end of the torsion shaft 3, and an internal spline is provided at the inner end of the torsion arm 2. The torsion shaft 3 and the torsion arm 2 are fixedly connected by the spline. Example 2

[0031] The difference between this embodiment and Embodiment 1 is that the torsion component is a metal torsion spring (not shown in the figure), one end of which is fixed to the torsion shaft and the other end is fixedly connected to the inner wall of the outer shell.

[0032] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. An anti-roll barless system, characterized in that: It consists of two independent anti-roll devices installed between the bogies and the cars on both sides of the train. Each anti-roll device includes a connecting rod (1), a torsion arm (2), a housing (4), and a torsion shaft (3). One section of the torsion shaft (3) is located in the inner space of the housing (4), and an elastic torsion member is provided between its outer periphery and the inner wall of the housing (4) so ​​that the torsion shaft (3) has an elastic torque greater than zero when it rotates. The housing (4) is fixed on the bogie. The outer end of the torsion shaft (3) is fixedly connected to one end of the torsion arm (2) perpendicular to the torsion arm (2). The other end of the torsion arm (2) is rotatably connected to the lower end of the connecting rod (1). The upper end of the connecting rod is connected to the car. When the distance between the car and the bogie on one side changes, the elastic torsion member in the anti-roll device on that side provides elastic resistance to resist the change in distance.

2. The anti-roll bar system without torsion bar shaft according to claim 1, characterized in that: The torsion member is a rubber body (5).

3. The anti-roll bar system without torsion bar shaft according to claim 1, characterized in that: The torsion element is a metal torsion spring.

4. The anti-roll bar system without torsion bar shaft according to claim 2, characterized in that: The rubber body (5) is annular, and its outer periphery and inner wall have a vulcanized bonded metal inner sleeve (6) and outer sleeve (7). The inner sleeve (6), the rubber body (5) and the outer sleeve (7) constitute a rubber ball joint. The inner wall of the inner sleeve (6) is fitted onto the outer periphery of the torsion shaft (3) by interference fit, and the outer sleeve (7) is fitted onto the inner wall of the outer shell (4) by interference fit.

5. The anti-roll bar system without torsion bar shaft according to claim 4, characterized in that: The inner wall of the front end of the outer shell (4) has an annular inner flange (401) formed by radial inward stretching, which is used to block the front end of the outer sleeve (7) of the rubber ball joint.

6. The anti-roll bar system without torsion bar shaft according to claim 5, characterized in that: The outer casing (4) has a mounting plate (402) at the front end, and the mounting plate (402) has bolt mounting holes (4021) around its periphery.

7. The anti-roll bar system without torsion bar shaft according to claim 6, characterized in that: The anti-rollover device also includes a front sealing dustproof assembly, which includes a sealing ring (8), a dust cover (9) with a central through hole, and a pressure plate (10). The sealing ring (8) presses against the front side of the annular inner flange (401), and the outer edge of the dust cover (9) presses against the sealing ring (8). The pressure plate (10) presses the dust cover (9) forward and is fixed to the mounting plate (402) by bolts.

8. The anti-roll bar system without torsion bar shaft according to claim 7, characterized in that: The dust cover (9) has a flared shape with an opening facing backwards and a conical outer cover surface (901). The pressure plate (10) presses on the outer cover surface (901). The rear end of the dust cover (9) has a cup-shaped support body (902) with an opening facing backwards, so that an interval space (903) is formed between the outer cover surface (901) and the cup-shaped support body (902). The junction of the cover body and the cup-shaped support body (902) in the interval space (903) section forms a small-diameter neck (904). The inner wall (905) of the through hole at the neck (904) is pressed against the outer periphery of the torsion shaft (3).

9. The anti-roll bar system without torsion bar shaft according to claim 4, characterized in that: The rear end of the outer shell (4) has a rear sealing end cap (11) fixed to the rear end face of the outer shell (4), and the front side of the rear sealing end cap (11) has a stop ring (1101) that extends forward into the outer shell to block the rear end of the rubber ball hinge outer sleeve (7).

10. The anti-roll bar system without torsion bar shaft according to claim 8, characterized in that: A front stop ring (13) and a rear stop ring (14) made of elastic material are provided on the torsion shaft (3) to restrict the front end and rear end of the rubber ball hinge inner sleeve (6) respectively. A wear-resistant plate (12) is provided between the rear stop ring (14) and the rear sealing end cover (11).

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