Anti-side-rolling torsion bar device and railway vehicle

Abstract

The invention provides an anti-side-rolling torsion bar device and a vehicle, and relates to the technical field of rail transit vehicles. The anti-side-rolling torsion bar device comprises a torsion bar shaft; each rotating arm assembly comprises a mounting sleeve, a rotating shaft and a rotating shaft; the first end of the mounting arm is connected to the mounting sleeve, and the second end of the mounting arm is suitable for being rotationally connected with the connecting seat; the two expansion sleeves are installed between the two ends of the torsion bar shaft and the inner walls of the two installation sleeves respectively, and the expansion sleeves are constructed to fixedly connect the torsion bar shaft with the installation sleeves in a radial expansion mode; and the two supporting seats are rotationally connected with the two ends of the torsion bar shaft correspondingly and are suitable for being fixedly connected with a vehicle body chassis. The mounting sleeve and the torsion bar shaft are fixedly connected through radial expansion generated by the expansion sleeve, and when a vehicle rolls laterally, the side rolling resistance of the vehicle is improved, the side rolling angle of the vehicle is limited, and the transverse stability and the side rolling resistance of the vehicle are enhanced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of rail transit vehicles, and more specifically, to an anti-roll torsion bar device and a rail vehicle. Background Art

[0002] With the rapid development of quasi-high-speed, high-speed railways and urban rail vehicles, drivers and passengers have higher and higher requirements for vehicle comfort and safety. At present, air springs are widely used in the suspension devices of rail vehicles. Based on their adjustable stiffness and relatively constant low natural vibration frequency, they can improve the smoothness of rail vehicles during operation. However, due to the presence of differential pressure valves at both ends of the air spring, the rolling angle of the rail vehicle when passing through a curve (such as the curved part of the track) is easily increased. For this reason, the above problem can be overcome by configuring an anti-roll torsion bar device.

[0003] The anti-roll torsion bar device is mainly installed between the body and bogie of the rail vehicle. When the vehicle rolls, the torsion bar shaft of the anti-roll torsion bar device is twisted and deformed, and a torque is generated through the connecting rod and other components to resist the rolling motion of the vehicle, thereby increasing the anti-roll stiffness of the vehicle, limiting the rolling angle of the vehicle, and limiting the vehicle to operate within the specified range of limits, ensuring the safety of vehicle operation.

[0004] The anti-roll torsion bar device mainly includes a torsion bar shaft and a torsion arm. The existing torsion bar shaft and torsion arm cannot be effectively connected and cannot effectively resist the rolling movement of the vehicle. Summary of the invention

[0005] In view of this, the present disclosure provides an anti-roll torsion bar device and a vehicle to enhance the lateral stability and anti-roll capability of the vehicle.

[0006] One aspect of the present disclosure provides an anti-roll torsion bar device, comprising: a torsion bar shaft; two swivel arm assemblies, each of the swivel arm assemblies comprising: a mounting sleeve; and a mounting arm, a first end of the mounting arm being connected to the mounting sleeve, and a second end of the mounting arm being suitable for rotationally connecting to a connecting seat; two expansion sleeves, respectively installed between the two ends of the torsion bar shaft and the inner walls of the two mounting sleeves, the expansion sleeves being configured to fix the torsion bar shaft to the mounting sleeves by radial expansion; and two support seats, respectively rotationally connected to the two ends of the torsion bar shaft and suitable for fixed connection to a vehicle body chassis.

[0007] According to an embodiment of the present disclosure, each of the expansion sleeves includes: an outer ring, the axial cross-section of the side wall of the outer ring is a conical slope; at least two inner rings, the axial cross-section of the side wall of the inner ring is a matching conical slope that matches the conical slope of the outer ring, and each of the inner rings is provided with a plurality of threaded holes extending in the axial direction and evenly opened in the circumferential direction; and a plurality of fastening bolts, which respectively pass through the threaded holes and are threadedly connected to the inner rings, so that the two adjacent inner rings can be brought close to each other in the axial direction by rotating the fastening bolts, thereby tightening the torsion bar shaft and the mounting sleeve.

[0008] According to an embodiment of the present disclosure, an isolation ring is provided inside the outer ring, and the isolation ring protrudes radially inward from the middle of the inner wall of the outer ring, and the conical slope includes two sub-conical slopes that gradually become thicker from the two ends of the outer ring toward the isolation ring, and each of the expansion sleeves includes two inner rings, and the matching conical slopes of the inner rings match the sub-conical slopes.

[0009] According to an embodiment of the present disclosure, each of the mounting arms comprises: a swivel arm, which extends radially and integrally from the outer wall of the mounting sleeve; and a connecting rod, wherein the first end of the connecting rod is suitable for being rotatably connected to the connecting seat, and the second end of the connecting rod is rotatably connected to the free end of the swivel arm.

[0010] According to an embodiment of the present disclosure, a limiting ring is provided on the inner wall of the inner side of the mounting sleeve, and the limiting ring is configured to limit the expansion sleeve from detaching from the mounting sleeve in an axially inward direction.

[0011] According to an embodiment of the present disclosure, the swivel arm assembly further includes an end cover, which is disposed on the outside of the mounting sleeve and is configured to close the outside of the mounting sleeve. Preferably, at least a portion of the end cover is made of a transparent material.

[0012] According to an embodiment of the present disclosure, the support seat is located on the inner side of the pivot arm assembly on the torsion bar shaft, and the torsion bar shaft is provided with an inner concave annular groove at a position between the support seat and the pivot arm assembly.

[0013] According to an embodiment of the present disclosure, the support seat is rotationally connected to the torsion bar shaft via a bearing.

[0014] According to an embodiment of the present disclosure, the anti-roll torsion bar device further includes a sealing ring, and two ends of the sealing ring are tightly fitted with the end of the support seat and the mounting sleeve respectively.

[0015] Another aspect of the present disclosure provides a vehicle, comprising: a connecting seat; a vehicle body frame; and an anti-roll torsion bar device as described in any of the above schemes, wherein the swing arm assembly connects the torsion bar shaft and the connecting seat, and the support seat connects the torsion bar shaft and the vehicle body frame.

[0016] According to the embodiments of the present disclosure, the expansion sleeves are installed between the two ends of the torsion bar shaft and the inner walls of the two mounting sleeves, and the expansion sleeves are allowed to expand radially to fix the mounting sleeves and the torsion bar shaft in connection; when the vehicle rolls, the torsion bar shaft is torsionally deformed, and a torque is generated through the swing arm assembly to resist the rolling motion of the vehicle, thereby increasing the vehicle's anti-roll strength, limiting the vehicle's rolling angle, enhancing the vehicle's lateral stability and anti-roll capability, ensuring the safety of vehicle operation, and improving driving safety and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0018] Figure 1 Schematically shows a side view of an anti-roll torsion bar device according to an embodiment of the present disclosure;

[0019] Figure 2 Schematically shows Figure 1 A cross-sectional view of a portion of the structure of the middle anti-roll torsion bar device at AA;

[0020] Figure 3 Schematically shows Figure 1 An exploded schematic diagram of a portion of the structure of the anti-roll torsion bar device;

[0021] Figure 4 Schematically shows a perspective view of an anti-roll torsion bar device according to an embodiment of the present disclosure;

[0022] Figure 5 A schematic perspective view of the connection between the mounting sleeve and the rotating arm of the anti-roll torsion bar device according to an embodiment of the present disclosure is shown;

[0023] Figure 6 Schematically shows Figure 5 A cross-sectional view of the installation sleeve;

[0024] Figure 7 A schematic perspective view of a expansion sleeve of an anti-roll torsion bar device according to an embodiment of the present disclosure is shown;

[0025] Figure 8 An exploded schematic diagram schematically shows a expansion sleeve of an anti-roll torsion bar device according to an embodiment of the present disclosure; and

[0026] Fig. 9 Schematically shows Figure 8 A cross-sectional view of the expansion sleeve shown;

[0027] Fig.10 Schematically shows an exploded schematic diagram of another expansion sleeve of the anti-roll torsion bar device according to an embodiment of the present disclosure;

[0028] Fig.11 Schematically shows Fig.10 A cross-sectional view of the expansion sleeve shown;

[0029] Fig.12 Schematically shows an exploded schematic diagram of another expansion sleeve of the anti-roll torsion bar device according to an embodiment of the present disclosure;

[0030] Fig.13 Schematically shows Fig.12 A cross-sectional view of the expansion sleeve shown;

[0031] Fig.14 Schematically shows an exploded schematic diagram of another expansion sleeve of the anti-roll torsion bar device according to an embodiment of the present disclosure;

[0032] Fig.15 Schematically shows Fig.14 A cross-sectional view of the expansion sleeve is shown.

[0033] Reference numerals:

[0034] 1. Torsion bar shaft;

[0035] 11. Inner concave ring groove;

[0036] 2. Rotating arm assembly;

[0037] 21. Install the sleeve;

[0038] 211, limit ring;

[0039] 22. Mounting arm;

[0040] 221, rotating arm;

[0041] 222, connecting rod;

[0042] 3. Expansion sleeve;

[0043] 31. Outer ring;

[0044] 311, isolation ring;

[0045] 32. Inner ring;

[0046] 321, threaded hole;

[0047] 322, first inner ring;

[0048] 323, second inner ring;

[0049] 33. Tighten the bolts;

[0050] 4. Support seat;

[0051] 5. End cap;

[0052] 6. Bearings;

[0053] 7. Sealing ring. DETAILED DESCRIPTION

[0054] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0055] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0056] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0057] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0058] During the operation of rail vehicles, the body of the rail vehicle mainly includes six degrees of freedom, namely, the telescopic vibration in the X direction extending along the length of the vehicle, the yaw vibration in the Y direction extending along the width of the vehicle, the floating vibration in the Z direction extending along the height of the vehicle, the rolling vibration around the X direction, the nodding vibration around the Y direction, and the shaking vibration around the Z axis. In order to meet the comfort and safety requirements of drivers and passengers, air springs are often configured on the body of rail vehicles. Based on their high flexibility coefficient in the Z direction, they can greatly absorb the high-frequency vibration of rail vehicles along the Z direction, and the noise generated when absorbing vibrations is also very small. However, due to the differential pressure valves at both ends of the air springs, the roll angle of the rail vehicle increases when it passes through a curve (such as a curved part of the track). For this reason, an anti-roll torsion bar device can be configured to increase the anti-roll stiffness of the vehicle, limit the roll angle of the vehicle, and limit the vehicle to operate within the specified range of limits to ensure the safety of vehicle operation.

[0059] The anti-roll torsion bar device mainly includes a torsion bar shaft, a torsion arm, a connecting rod and a rubber pad. During the operation of the rail vehicle, when the left and right air springs undergo reverse vertical displacement (i.e., the vehicle body rolls), the two torsion arms at both ends of the torsion bar shaft apply a mutually opposite force and torque to the torsion shaft, so that the torsion shaft is subjected to torque and produces torsional elastic deformation, playing the role of a torsion bar spring. The reaction torque of the torsion bar spring is always opposite to the direction of the angular displacement of the rolling angle of the vehicle body to constrain the rolling motion of the vehicle body. The existing torsion bar shaft and torsion arm cannot be effectively connected and cannot effectively resist the rolling motion of the vehicle.

[0060] Figure 1 Schematically shows a side view of an anti-roll torsion bar device according to an embodiment of the present disclosure; Figure 2 Schematically shows Figure 1 A cross-sectional view of a portion of the structure of the middle anti-roll torsion bar device at AA; Figure 3 Schematically shows Figure 1 An exploded schematic diagram of a portion of the structure of the anti-roll torsion bar device; Figure 4 A three-dimensional schematic diagram of an anti-roll torsion bar device according to an embodiment of the present disclosure is schematically shown.

[0061] See also Figures 1 to 4The embodiment of the present disclosure provides an anti-roll torsion bar device, comprising: a torsion bar shaft 1, two swing arm assemblies 2, a tightening sleeve 3 and two support seats 4. Each swing arm assembly 2 comprises a mounting sleeve 21 and a mounting arm 22, wherein the first end of the mounting arm 22 is connected to the mounting sleeve 21, and the second end of the mounting arm 22 is adapted to be rotatably connected to the connection seat; the two tightening sleeves 3 are respectively mounted between the two ends of the torsion bar shaft 1 and the inner walls of the two mounting sleeves 21, and the tightening sleeves 3 are configured to fix the torsion bar shaft 1 and the mounting sleeves 21 in a radially tightening manner; the two support seats 4 are respectively rotatably connected to the two ends of the torsion bar shaft 1, and are adapted to be fixedly connected to the vehicle body chassis.

[0062] According to the embodiment of the present disclosure, the torsion bar shaft 1 can withstand the torque generated when the vehicle rolls and transmit it to the swing arm assemblies 2 on both sides. The torsion bar shaft 1 can be supported by high-strength and high-rigidity materials to ensure that the torsion bar shaft 1 is not easily deformed or broken when subjected to large torque.

[0063] According to the embodiment of the present disclosure, the support seat 4 stably supports the torsion bar shaft 1 on the vehicle body chassis and allows it to rotate around the axis. The support seat 4 can be fixedly connected to the vehicle body chassis by bolt connection.

[0064] According to the embodiment of the present disclosure, the expansion sleeve 3 generates pressure and friction between the contact surfaces in the connection between the torsion bar shaft 1 and the mounting sleeve 21, so as to achieve load transfer and connection.

[0065] According to the embodiment of the present disclosure, the expansion sleeve 3 is installed between the two ends of the torsion bar shaft 1 and the inner walls of the two mounting sleeves 21, and the expansion sleeve 3 is allowed to expand radially to fix the mounting sleeve 21 and the torsion bar shaft 1. When the vehicle rolls, the torsion bar shaft 1 is torsionally deformed, and a torque is generated through the swing arm assembly 2 to resist the vehicle's rolling movement, thereby increasing the vehicle's anti-roll strength, limiting the vehicle's rolling angle, enhancing the vehicle's lateral stability and anti-roll capability, ensuring the safety of vehicle operation, and improving driving safety and comfort.

[0066] At present, the torsion bar shaft and the torsion arm of the anti-roll torsion bar device are mainly assembled by interference fit.

[0067] For example, the torsion bar shaft is set to be cylindrical, and a corresponding cylindrical hole is set on the torsion arm, and the torsion shaft and the torsion arm are connected by interference fit (cold installation and hot installation, etc.);

[0068] Or, for example, an external spline is provided at the end of the torsion bar shaft, an internal spline is provided on the torsion arm, and then the external spline and the internal spline are interference fit;

[0069] For another example, a conical surface is provided at the end of the torsion bar shaft, a conical hole is provided at the torsion arm, and then the torsion bar shaft and the torsion arm are connected by axial force.

[0070] However, the above-mentioned assembly methods all have corresponding problems. The interference fit connection method requires special equipment, and the installation process is complicated. In addition, since the temperature of the connection structure needs to be changed, the performance of the connection structure may also change. The spline connection method requires complex processing technology for the spline and is costly. The method using conical surfaces and conical holes requires assembly through hydraulic installation, which also requires special equipment, and the process is also complicated.

[0071] In view of this, the present disclosure provides the following structural design for an anti-roll torsion bar device, in order to partially solve the problems of the current anti-roll torsion bar device being difficult to manufacture, high cost and complex process.

[0072] Figure 7 A schematic perspective view of a expansion sleeve of an anti-roll torsion bar device according to an embodiment of the present disclosure is shown; Figure 8 Schematically shows an exploded schematic diagram of a expansion sleeve of an anti-roll torsion bar device according to an embodiment of the present disclosure; Fig. 9 Schematically shows Figure 8 A cross-sectional view of the expansion sleeve is shown.

[0073] See also Figures 7 to 9 According to an embodiment of the present disclosure, each expansion sleeve 3 includes an outer ring 31, at least two inner rings 32, and a plurality of fastening bolts 33. The axial section of the side wall of the outer ring 31 is a tapered inclined surface. In some embodiments, the outer wall surface of the outer ring 31 is formed as a cylindrical surface with a substantially constant outer diameter, and the inner wall surface is formed as a tapered inclined surface. The axial section of the side wall of the inner ring 32 is a matching tapered inclined surface that matches the tapered inclined surface of the outer ring 31. In some embodiments, the outer wall surface of the inner ring 32 is formed as a tapered inclined surface, and the inner wall surface is formed as a cylindrical surface with a substantially constant inner diameter, which is matched with the cylindrical structure with a substantially constant outer diameter at both ends of the torsion bar shaft 1, and each inner ring 32 is provided with a plurality of threaded holes 321 extending in the axial direction and uniformly opened in the circumferential direction. A plurality of fastening bolts 33 are respectively threadedly connected to the inner ring 32 through the threaded holes 321, so that the two adjacent inner rings 32 are brought close to each other in the axial direction by rotating the fastening bolts 33, thereby tightening the torsion bar shaft 1 and the mounting sleeve 21.

[0074] According to an embodiment of the present disclosure, the expansion sleeve 3 may include two inner rings 32, and the threaded directions of the threaded holes 321 of the two inner rings 32 are opposite, so that under the action of the fastening bolts 33, the two inner rings 32 can approach each other (tightened state) or move away from each other (released state).

[0075] According to the embodiments of the present disclosure, since the side walls of the outer ring 31 and the inner ring 32 are designed to be conical inclined surfaces, an axial force is generated by rotating the fastening bolts 33, so that when the two adjacent inner rings 32 approach each other along the axial direction, the conical inclined surfaces of the outer ring 31 and the matching conical inclined surfaces of the inner ring 32 squeeze each other, generating a radial expansion force, so that the outer ring 31 expands outward to expand and tighten the mounting sleeve 21, and the inner ring 32 contracts inward to expand and tighten the torsion bar shaft 1, thereby achieving a fixed connection between the mounting sleeve 21 and the torsion bar shaft 1, improving the assembly efficiency of the anti-roll torsion bar device and reducing costs; the expansion sleeve 3 achieves an efficient and reliable connection between the torsion bar shaft 1 and the mounting sleeve 21 through precise mechanical matching and bolt fastening.

[0076] See also Figure 8 and Fig. 9 According to an embodiment of the present disclosure, an isolation ring 311 is provided inside the outer ring 31. The isolation ring 311 protrudes radially inward from the middle of the inner wall of the outer ring 31. The conical slope includes two sub-conical slopes that gradually become thicker from both ends of the outer ring 31 toward the isolation ring 311. Each expansion sleeve 3 includes two inner rings 32. The matching conical slopes of the inner rings 32 match the sub-conical slopes.

[0077] According to an embodiment of the present disclosure, the setting of the isolation ring 311 enables the outer ring 31 to form a middle barrier area, which can not only increase the rigidity of the outer ring 31, but also play a role of separation and support, so that the connection between the outer ring 31 and the inner ring 32 is more firmly connected, and the expansion force is distributed on the sub-conical inclined surfaces on both sides of the isolation ring 311, thereby enhancing the expansion effect; the two sub-conical inclined surfaces are gradually thickened from the two ends of the outer ring 31 toward the isolation ring 311, which can facilitate the installation of the inner ring 32 in the outer ring 31. According to another embodiment of the present disclosure, the expansion sleeve 3 can also include an inner cone sleeve and an outer cone sleeve that match each other, and a bolt mounted on the inner cone sleeve, the wall of the inner cone sleeve is provided with a contraction expansion joint, and a thread matching the bolt is provided, and the wall of the outer cone sleeve is provided with an expansion expansion joint. During installation, the inner tapered sleeve is put on the torsion bar shaft 1, and the mounting sleeve 21 is put on the outer tapered sleeve. The bolts are tightened, and the inner tapered sleeve and the outer tapered sleeve, which are conically matched with each other, are displaced axially and approach each other. The outer tapered sleeve with an expansion expansion seam is expanded and connected with the mounting sleeve 21, and the inner tapered sleeve with a contraction expansion sleeve is squeezed and deformed radially and fixedly connected with the torsion bar shaft 1.

[0078] Fig.10 An exploded schematic diagram of another expansion sleeve of the anti-roll torsion bar device according to an embodiment of the present disclosure is schematically shown. Fig.11 Schematically shows Fig.10 A cross-sectional view of the expansion sleeve is shown.

[0079] Reference Fig.10 and Fig.11As shown, the expansion sleeve 3 includes an outer ring 31 and an inner ring 32. Specifically, one end of the inner ring 32 is sleeved inside the outer ring 31, and the inner edge of the outer ring 31 is provided with an inner conical surface, and the portion of the inner ring 32 sleeved inside the outer ring 31 is provided with an outer conical surface. During installation, the outer ring 31 and the inner ring 32 are sleeved in sequence along the axial direction of the torsion bar shaft 1, and the outer conical surface of the inner ring 32 is abutted against the inner conical surface of the outer ring, and the bolts are tightened, and the inner ring 32 is squeezed and deformed in the radial direction under the action of the outer conical surface, and is fixedly connected to the torsion bar shaft 1.

[0080] Fig.12 An exploded schematic diagram of another expansion sleeve of the anti-roll torsion bar device according to an embodiment of the present disclosure is schematically shown. Fig.13 Schematically shows Fig.12 A cross-sectional view of the expansion sleeve is shown.

[0081] Reference Fig.12 and Fig.13 As shown, the expansion sleeve 3 includes an outer ring 31, a first inner ring 322, a second inner ring 323 and an isolating ring 311. In detail, one end of each of the first inner ring 322 and the second inner ring 323 is respectively sleeved on the two ends of the axial direction of the outer ring 31, the inner edge of the outer ring 31 is provided with an inner conical surface, and the first inner ring 322 and the second inner ring 323 sleeved on the inner side of the outer ring 31 are provided with an outer conical surface. Among them, the first inner ring 322 and the second inner ring 323 are arranged opposite to each other, and when the bolts are screwed into the first inner ring 322 and the second inner ring 323, the first inner ring 322 and the second inner ring 323 are brought close to each other. Further, the inner edges of the first inner ring 322 and the second inner ring 323 also have inner conical surfaces, and the outer edge of the isolating ring 311 has an outer conical surface. During installation, when the bolts are screwed in, the first inner ring 322 and the second inner ring 323 are relatively close to each other along the axial direction of the outer ring 31, and then under the extrusion effect of the inner cone surface of the outer ring 31 on the outer cone surface of the first inner ring 322 and the second inner ring 323, the first inner ring 322 and the second inner ring 323 are caused to synchronously squeeze the isolation ring 311 through the inner cone surface, so that the inner diameter of the isolation ring 311 is contracted and fixedly connected to the torsion bar shaft 1.

[0082] Fig.14 An exploded schematic diagram of another expansion sleeve of the anti-roll torsion bar device according to an embodiment of the present disclosure is schematically shown. Fig.15 Schematically shows Fig.14 A cross-sectional view of the expansion sleeve is shown.

[0083] Reference Fig.14 and Fig.15As shown, the expansion sleeve 3 includes two outer rings 31, two inner rings 32 and a spacer ring 311, and the two outer rings 31 and the two inner rings 32 are symmetrically arranged along the axial direction of the spacer ring 311. In detail, the inner edges of the two outer rings 31 are provided with inner conical surfaces, and the parts of the two inner rings 32 sleeved on the inner side of the outer ring 31 are provided with outer conical surfaces. Furthermore, the inner edge of the inner ring 32 also has an inner conical surface, and both axial ends of the outer edge of the spacer ring 311 have outer conical surfaces. During installation, when the bolt is screwed in, the bolt passes through an inner ring 32, an outer ring 31, the spacer ring 311, another outer ring and another inner ring in sequence, and the two inner rings 32 are relatively close to each other along the axial direction of the outer ring 31, and then under the extrusion effect of the inner conical surface of the outer ring 31 on the outer conical surface of the inner ring 32, the two inner rings 32 are synchronously extruded by the inner conical surface to squeeze the spacer ring 311, so that the inner diameter of the axial ends of the spacer ring 311 is contracted and fixedly connected to the torsion bar shaft 1.

[0084] Figure 5 A side view schematically shows the connection between the mounting sleeve and the swing arm of the anti-roll torsion bar device according to an embodiment of the present disclosure.

[0085] See also Figure 4 and Figure 5 According to an embodiment of the present disclosure, each mounting arm 22 includes: a rotating arm 221, which radially extends integrally from the outer wall of the mounting sleeve 21; and a connecting rod 222, wherein the first end of the connecting rod 222 is suitable for being rotatably connected to the connecting seat, and the second end of the connecting rod 222 is rotatably connected to the free end of the rotating arm 221.

[0086] According to an embodiment of the present disclosure, the rotating arm 221 and the mounting sleeve 21 may be integrally formed to improve the strength and stability of the rotating arm 221 and the mounting sleeve 21 .

[0087] According to the embodiment of the present disclosure, the rotational connection between the swing arm 221, the connecting rod 222 and the connecting seat enables the connecting rod 222 to transmit force and motion between the swing arm 221 and the vehicle body. When the vehicle body rolls, the roll force generated by the torsion bar shaft 1 is transmitted to the connecting rod 222 through the swing arm 221, and then to the vehicle body, so as to suppress the rolling motion of the vehicle body and enhance the lateral stability and anti-rolling ability of the vehicle.

[0088] Figure 6 Schematically shows Figure 5 Cross-sectional view of the installation sleeve.

[0089] See also Figure 2 and Figure 6 According to an embodiment of the present disclosure, a limiting ring 211 is provided on the inner wall of the inner side of the mounting sleeve 21 , and the limiting ring 211 is configured to limit the expansion sleeve 3 from detaching from the mounting sleeve 21 in the axial inward direction.

[0090] According to an embodiment of the present disclosure, the limiting ring 211 may be in a ring, a semi-ring or other suitable shape. The limiting ring 211 and the mounting sleeve 21 may be integrally formed.

[0091] According to the embodiment of the present disclosure, the limiting ring 211 ensures that the expansion sleeve 3 is stably maintained in the installation sleeve 21 and will not be separated from the installation sleeve 21 due to the axial force of the torsion bar shaft 1 or accidentally fall off due to other external factors, thereby achieving the fixation of the expansion sleeve 3.

[0092] See also Figure 3 and Figure 4 According to an embodiment of the present disclosure, the swing arm assembly 2 further includes an end cover 5, which is disposed on the outside of the mounting sleeve 21 and is configured to close the outside of the mounting sleeve 21. Preferably, at least a portion of the end cover 5 is made of a transparent material.

[0093] According to an embodiment of the present disclosure, the end cover 5 is connected to the mounting sleeve 21 by bolt connection or other means.

[0094] According to the embodiments of the present disclosure, the end cover 5 can be made entirely of transparent materials; or it can be made of transparent materials only in the middle position of the end cover 5, so as to facilitate the operator to observe the situation inside the installation sleeve 21 without removing the end cover 5, thereby improving the convenience and efficiency of maintenance.

[0095] According to an embodiment of the present disclosure, the transparent material may be a material having good light transmittance and weather resistance, for example, polypropylene or polymethyl methacrylate (ie, organic glass).

[0096] According to the embodiment of the present disclosure, the setting of the end cover 5 can prevent dust, moisture or other impurities from entering the interior of the mounting sleeve 21 through the outside of the mounting sleeve 21, protecting the parts inside the mounting sleeve 21 from contamination and damage, thereby improving the durability and reliability of the parts.

[0097] According to an embodiment of the present disclosure, the support seat 4 is located on the inner side of the swing arm assembly 2 on the torsion bar shaft 1 , and an inner concave annular groove 11 is formed on the torsion bar shaft 1 between the support seat 4 and the swing arm assembly 2 .

[0098] According to the embodiment of the present disclosure, the inner concave annular groove 11 serves as a stress dispersion area, which can reduce the degree of local stress concentration and reduce the generation of interference stress.

[0099] According to an embodiment of the present disclosure, the support seat 4 is rotationally connected to the torsion bar shaft 1 via a bearing 6 .

[0100] According to the embodiment of the present disclosure, the provision of the bearing 6 can ensure that the torsion bar shaft 1 rotates smoothly and reliably.

[0101] See also Figure 2According to an embodiment of the present disclosure, the anti-roll torsion bar device further includes a sealing ring 7, both ends of which are tightly fitted with the end of the support seat 4 and the mounting sleeve 21 respectively.

[0102] According to an embodiment of the present disclosure, a groove is provided on the inner wall of the end of the support seat 4, one end of the sealing ring 7 is pressed against the groove at the end of the support seat 4, and the other end of the sealing ring 7 is pressed against the inner wall of the mounting sleeve 21 and the limiting ring 211, thereby achieving effective fixation of the sealing ring 7.

[0103] According to the embodiment of the present disclosure, the provision of the sealing ring 7 can prevent external impurities from entering the expansion sleeve 3, ensure the sealing performance of the anti-roll torsion bar device, and improve the reliability and durability of the anti-roll torsion bar device.

[0104] According to the embodiment of the present disclosure, the way in which the expansion sleeve 3 connects the installation sleeve 21 and the torsion bar shaft 1 simplifies the installation process, simplifies the structure of the connection between the torsion bar shaft 1 and the swing arm assembly 2, improves the reliability and durability of the connection, and reduces the processing cost.

[0105] Another aspect of the present disclosure provides a vehicle, comprising: a connecting seat; a vehicle body frame; and an anti-roll torsion bar device of any of the above schemes, wherein the swing arm assembly 2 connects the torsion bar shaft 1 and the connecting seat, and the support seat 4 connects the torsion bar shaft 1 and the vehicle body frame.

[0106] According to the embodiments of the present disclosure, the swing arm assembly 2 can realize the transmission of force and torque between the torsion bar shaft 1 and the vehicle body; the vehicle body chassis effectively supports the torsion bar shaft 1 through the support seat 4, and the synergistic effect between the torsion bar shaft 1, the swing arm assembly 2 and the support seat 4 provides the vehicle body with effective anti-rolling ability. When the vehicle tends to roll, the torsion bar shaft 1 is subjected to the torsional torque, thereby transmitting force to the vehicle body through the swing arm assembly 2 and the support seat 4, resisting the rolling tendency of the vehicle and improving the stability of the vehicle.

[0107] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. An anti-roll torsion bar device, characterized in that: include: Torsion bar shaft (1); Two rotating arm assemblies (2), each of the rotating arm assemblies (2) comprising: Installing sleeve (21); as well as A mounting arm (22), wherein a first end of the mounting arm (22) is connected to the mounting sleeve (21), and a second end of the mounting arm (22) is adapted to be rotatably connected to a connecting seat; Two expansion sleeves (3) are respectively installed between the two ends of the torsion bar shaft (1) and the inner walls of the two mounting sleeves (21), and the expansion sleeves (3) are configured to fix the torsion bar shaft (1) and the mounting sleeves (21) in a radially expanding manner; and The two support seats (4) are respectively rotatably connected to the two ends of the torsion bar shaft (1) and are suitable for being fixedly connected to the vehicle body underframe.

2. The anti-roll torsion bar device according to claim 1, characterized in that: Each of the expansion sleeves (3) comprises: An outer ring (31), wherein the axial cross section of the side wall of the outer ring (31) is a conical inclined surface; at least two inner rings (32), the axial cross-section of the side wall of the inner ring (32) being a matching conical inclined surface that matches the conical inclined surface of the outer ring (31), each inner ring (32) being provided with a plurality of threaded holes (321) extending in the axial direction and uniformly opened in the circumferential direction; and A plurality of fastening bolts (33) are respectively passed through the threaded holes (321) and are threadedly connected to the inner rings (32), so that two adjacent inner rings (32) are brought closer together along the axial direction by rotating the fastening bolts (33), thereby tightening the torsion bar shaft (1) and the mounting sleeve (21).

3. The anti-roll torsion bar device according to claim 2, characterized in that: An isolation ring (311) is provided inside the outer ring (31), and the isolation ring (311) protrudes radially inward from the middle of the inner wall of the outer ring (31), and the conical slope includes two sub-conical slopes that gradually become thicker from the two ends of the outer ring (31) toward the isolation ring (311), and each of the expansion sleeves (3) includes two inner rings (32), and the matching conical slopes of the inner rings (32) match the sub-conical slopes.

4. The anti-roll torsion bar device according to any one of claims 1 to 3, characterized in that: Each of the mounting arms (22) comprises: A rotating arm (221) extending radially from the outer wall of the mounting sleeve (21); and A connecting rod (222), wherein the first end of the connecting rod (222) is adapted to be rotatably connected to the connecting seat, and the second end of the connecting rod (222) is rotatably connected to the free end of the rotating arm (221).

5. The anti-roll torsion bar device according to claim 4, characterized in that: A limiting ring (211) is provided on the inner wall of the inner side of the installation sleeve (21), and the limiting ring (211) is configured to limit the expansion sleeve (3) from detaching from the installation sleeve (21) in an axially inward direction.

6. The anti-roll torsion bar device according to claim 4, characterized in that: The swing arm assembly (2) further comprises an end cover (5), wherein the end cover (5) is arranged on the outside of the mounting sleeve (21) and is configured to close the outside of the mounting sleeve (21); Wherein, at least a portion of the end cover (5) is made of a transparent material.

7. The anti-roll torsion bar device according to any one of claims 1 to 3, characterized in that: The support seat (4) is located on the inner side of the swing arm assembly (2) on the torsion bar shaft (1), and the torsion bar shaft (1) is provided with an inner concave annular groove (11) at a position between the support seat (4) and the swing arm assembly (2).

8. The anti-roll torsion bar device according to claim 7, characterized in that: The support seat (4) is rotatably connected to the torsion bar shaft (1) via a bearing (6).

9. The anti-roll torsion bar device according to claim 7, characterized in that: The anti-roll torsion bar device also includes a sealing ring (7), and two ends of the sealing ring (7) are respectively tightly fitted with the end of the support seat (4) and the installation sleeve (21).

10. A rail vehicle, characterized in that: include: A vehicle body, wherein a connecting seat and a vehicle body underframe are provided on the vehicle body; as well as According to the anti-roll torsion bar device according to any one of claims 1 to 9, the swing arm assembly (2) connects the torsion bar shaft (1) and the connecting seat, and the support seat (4) connects the torsion bar shaft (1) and the vehicle body frame.

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