阅读说明：本技术 一种机车车辆抗侧滚直杆方锥扭力杆及其加工工艺 (Anti-side rolling straight rod square cone torsion rod of rolling stock and machining process thereof ) 是由 陆隆宪 于 2021-03-02 设计创作，主要内容包括：本发明公开了本发明提供的一种机车车辆抗侧滚直杆方锥扭力杆,包括扭力杆本体,所述扭力杆本体两端与摇臂连接的连接部为用一个中线与扭力杆轴线重合且顶点位于远离扭力杆一侧的四凌锥切割后得到的一个多面体,所述四凌锥的锥度为1:10或1:16或1:20,在摇臂上设有与扭力杆本体连接部相适配的结合面。本发明还提供了上述机车车辆抗侧滚扭力杆的加工工艺,包括：所述扭力杆本体在粗加工后经过调质处理,并对其表面进行喷丸处理。本发明的机车车辆抗侧滚扭力杆采用面接触运动副结构,大大提高了连接强度,保证了更高的安全系数,且装配过程简单,提升了抗扭性能和紧凑性。(The invention discloses a square-cone torsion bar of a rolling side anti-rolling straight bar of a locomotive, which comprises a torsion bar body, wherein connecting parts of two ends of the torsion bar body and a rocker arm are connected to form a polyhedron obtained by cutting a square cone, the center line of which is superposed with the axis of the torsion bar, and the vertex of which is positioned on one side far away from the torsion bar, the taper of the square cone is 1:10 or 1:16 or 1:20, and a joint surface matched with the connecting part of the torsion bar body is arranged on the rocker arm. The invention also provides a processing technology of the rolling-resisting torsion bar of the rolling stock, which comprises the following steps: the torsion bar body is subjected to thermal refining after rough machining, and shot blasting is performed on the surface of the torsion bar body. The rolling-resisting torsion bar of the rolling stock adopts a surface contact kinematic pair structure, greatly improves the connection strength, ensures higher safety factor, has simple assembly process, and improves the torsion resistance and compactness.)

1. The utility model provides a rolling stock anti side rolling straight pole square cone torsion bar, includes the torsion bar body, its characterized in that: the connecting parts of the two ends of the torsion bar body and the rocker arm are all polyhedrons obtained by cutting a regular pyramid of which the center line is coincident with the axis of the torsion bar and the vertex is positioned at one side far away from the torsion bar, the taper of the regular pyramid is 1:10 or 1:16 or 1:20, and the rocker arm is provided with a combining surface matched with the connecting part of the torsion bar body.

2. The square-cone torsion bar of the anti-roll bar of the rolling stock of claim 1, wherein: the regular pyramid is one of a regular triangular pyramid, a regular rectangular pyramid, a regular pentagonal pyramid and a regular hexagonal pyramid.

3. The square-cone torsion bar of the anti-roll bar of the rolling stock of claim 1, wherein: the torsion bar body is made of 50CrVA spring steel.

4. The process for machining the square-cone torsion bar of the anti-rolling rod of the rolling stock as claimed in claim 1 or 2, wherein the process comprises the following steps: the torsion bar body is subjected to thermal refining after rough machining, so that the strength is more than 1500MPa and the rigidity is 3.0 +/-5% MN.m/rad after thermal refining and quenching, shot blasting is performed on the surface of the torsion bar body, the surface coverage rate is more than or equal to 95%, and the surface hardness value reaches 45-52 HRC.

Technical Field

The invention relates to the technical field of an anti-rolling torsion bar system for a railway vehicle, in particular to a square-cone torsion bar of an anti-rolling straight bar of a locomotive vehicle and a processing technology thereof.

Background

In order to restrain the reduction of the anti-rolling rigidity of the vehicle, a set of anti-rolling torsion bar device is additionally arranged in a suspension system of a common bogie of the vehicle, and the aim is achieved by utilizing the torsion deformation generated by a metal elastic bar when the metal elastic bar is acted by torque to provide anti-torsion moment. The torsion bar has the characteristics of simple process, high calculation accuracy and easiness in control, and is generally applied in the field.

At present, a torsion bar and a rocker arm adopt a spline connection structure, and under the side rolling motion state of the structure, a stressed part only has a local spline tooth surface, so that the contact of the tooth surface and the tooth surface belongs to a linear contact kinematic pair, the connection strength is lower than that of a surface contact connection structure, and the requirement on the angle of a spline is strict, so that the assembly is difficult to realize. Therefore, it is necessary to design a connecting structure of the torsion bar and the rocker arm of the rolling-resisting torsion bar device of the rolling-resisting locomotive with high connecting strength, simple assembly, compact volume, safety and reliability.

Disclosure of Invention

The invention aims to provide a square-cone torsion bar of a side rolling resistant rod of a rolling stock and a processing technology thereof, so as to solve the problems in the background technology.

The invention provides a square-cone torsion bar of a rolling side resistant straight bar of a locomotive vehicle, which comprises a torsion bar body, wherein connecting parts of two ends of the torsion bar body, which are connected with a rocker arm, are all polyhedrons obtained by cutting a regular pyramid of which the center line is coincident with the axis of the torsion bar and the vertex is positioned at one side far away from the torsion bar, the taper of the regular pyramid is 1:10 or 1:16 or 1:20, and a joint surface matched with the connecting part of the torsion bar body is arranged on the rocker arm.

Further, the regular pyramid is one of a regular triangular pyramid, a regular rectangular pyramid, a regular pentagonal pyramid and a regular hexagonal pyramid.

Further, the torsion bar body is made of 50CrVA spring steel.

The invention also provides a processing technology of the rolling-resisting torsion bar of the rolling stock, which comprises the following steps: the torsion bar body is subjected to thermal refining after rough machining, so that the strength is more than 1500MPa and the rigidity is 3.0 +/-5% MN.m/rad after thermal refining and quenching, shot blasting is performed on the surface of the torsion bar body, the surface coverage rate is more than or equal to 95%, and the surface hardness value reaches 45-52 HRC.

Compared with the prior art, the invention has the following beneficial effects: the rolling-resisting torsion bar of the rolling stock is directly subjected to heat treatment to meet the corresponding requirements without cutting processing, and adopts a surface contact kinematic pair structure, so that the connection strength is greatly improved, and a higher safety coefficient is ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of a torsion beam body of the present invention.

Fig. 2 is a schematic view of the direction a-a in fig. 1.

Detailed Description

In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.

As shown in fig. 1-2, a square-cone torsion bar of a rolling stock anti-roll bar of the present embodiment includes a torsion bar body 1, where a connecting portion 2 of two ends of the torsion bar body 1 connected to a rocker arm is a polyhedron obtained by cutting a square cone whose central line coincides with an axis of the torsion bar and whose vertex is located at a side far from the torsion bar, the taper of the square cone is 1:10 or 1:16 or 1:20, and a connecting surface adapted to the connecting portion 2 of the torsion bar body is provided on the rocker arm.

In the embodiment, the torsion bar body is made of 50CrVA spring steel, the torsion bar body is subjected to quenching and tempering after rough machining, so that the strength is more than 1500MPa, the rigidity is 3.0 +/-5% of MN.m/rad, the surface of the torsion bar body is subjected to shot blasting, the surface coverage rate is more than or equal to 95%, and the surface hardness value reaches 45-52 HRC.

According to the rolling resistance torsion bar of the rolling stock, the torsion bar and the rocker arm are assembled through oil pressure, the joint surface adopts a conical connection structure to complete conical surface self-locking, and the surface contact kinematic pair structure greatly improves the connection strength; after locking, the torsion bar and the rocker arm are integrated, and the torsion bar and the rocker arm do not need to be assembled again, so that the compactness of the mechanism is improved, and the assembly process is simplified; the torsion bar is made of 50CrVA spring steel, the strength is 1700Mpa after quenching and tempering, the surface is subjected to shot blasting after grinding, the surface coverage rate reaches 95%, the hardness needs to reach 52HRC, and the service life of the torsion bar and rocker arm connecting structure is prolonged.

Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.