A transverse stop assembly for a light rail car

Abstract

This invention provides a transverse stop assembly for a light rail car, including a base on a mounting seat, with a buffer assembly on each side of the base, arranged symmetrically. Each buffer assembly includes a spring, with an end seat fixed to the outer end and a conical clamping seat fixing the inner end to the base. The spring includes a main structure and a coiled structure. The end seat is fixed to the end of the main structure, and the clamping seat is installed inside the coiled structure. The outer diameter of the conical end of the clamping seat in contact with the spring is larger than the inner diameter of the coiled structure. Both the spring's mating portion with the end seat and the spring's mating portion with the clamping seat are closed-loop structures. The clamping seats of both buffer assemblies are simultaneously fixed to the base via a connector. Each clamping seat has an external connecting portion facing the end seat, on which a protective seat is installed. The end seat and the main structure are tightly fitted. This invention provides a stable structure and simple assembly. The coiled structure creates a preload at the conical end of the clamping seat, which both secures the spring and prevents it from loosening.

Description

Technical Field

[0001] This invention belongs to the technical field of light rail car buffer devices, and in particular relates to a light rail car lateral stop assembly. Background Technology

[0002] The lateral stop assembly used at the connection point of light rail carriages effectively buffers the impact force caused by relative movement of the carriages during light rail operation. Current technology primarily uses screws to connect the springs and their structural components. However, this type of structure suffers from severe localized loads, poor structural stability, and a short service life. For example, a common structure uses screws to press the spring end onto an end seat. Because the screw is screwed onto the end seat, it is prone to detachment during prolonged travel and under load. Furthermore, the impact force generated by relative movement of the carriages can easily cause the screw to deform or break, resulting in high maintenance costs and unreliable operation. Therefore, it is necessary to improve the existing lateral stop structure. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the deficiencies in the prior art and proposes a transverse stop assembly for a light rail car.

[0004] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0005] A transverse stop assembly for a light rail car includes a base fixed to a mounting seat, and a buffer assembly on each side of the base. The two buffer assemblies are symmetrically arranged on both sides of the base. Each buffer assembly includes a spring, with an end seat fixed to the outer end of the spring and the inner end fixed to the base by a conical clamping seat. The conical end of the clamping seat faces one side of the base.

[0006] The spring includes a main structure and a coil structure. The end seat is fixed to the end of the main structure, and the clamping seat is installed inside the coil structure. The outer diameter of the part of the cone end of the clamping seat that contacts the spring is larger than the inner diameter of the coil structure, so that the coil structure part forms a preload at the cone end of the clamping seat.

[0007] The spring and the part that mates with the end seat, as well as the part that mates with the clamping seat, are all closed-ring structures; the clamping seats of the two buffer components are simultaneously fixed to the base by a connector, and an external connecting part is provided at the end of the clamping seat facing the end seat, and a protective seat is installed on the external connecting part;

[0008] The end seat includes a main body and an end plate on the outside of the main body. The main body is conical with its conical end facing the base. The main body is provided with an external thread structure, which screws into the inside of the spring main body structure. The spring and the main body are kept in tight fit by the preload between the spring main body structure and the main body.

[0009] Furthermore, the mounting base is provided with two symmetrical mounting holes.

[0010] Furthermore, the base is welded and fixed to the mounting base.

[0011] Furthermore, both the portion of the spring that mates with the end seat and the portion that mates with the clamping seat are densely coiled structures.

[0012] Furthermore, the springs in the two buffer components are arranged coaxially.

[0013] Furthermore, the connector uses a fully threaded screw, and the clamping seat has a threaded hole in the middle that mates with the connector.

[0014] Furthermore, the protective seat has a cylindrical shape and is arranged coaxially with the spring.

[0015] Compared with existing technologies, the present invention has the following advantages:

[0016] This invention uses a single connector to simultaneously fix the buffer components on both sides to the base, ensuring structural stability and simplifying assembly. Furthermore, the outer diameter of the conical end of the pressure seat in contact with the spring is larger than the inner diameter of the contacting coil structure, creating a preload on the coil structure at the conical end of the pressure seat. This serves to fix the spring and prevent it from loosening. Additionally, the stress distribution between structural components is good, and the connector is less prone to deformation and breakage. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure created by this invention;

[0019] Figure 2 A three-dimensional structural schematic diagram created for this invention;

[0020] Figure 3 A structural cross-sectional view created for this invention;

[0021] Figure 4 This is a schematic diagram of the connection between the clamping seat and the base in this invention. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] A type of transverse stop assembly for light rail carriages, such as Figures 1 to 4 As shown, the device includes a base 2 fixed to the mounting base 1, and a buffer assembly on each side of the base. The two buffer assemblies are symmetrically arranged on both sides of the base. Each buffer assembly includes a spring 3, with an end seat 4 fixed to the outer end of the spring and the inner end fixed to the base by a conical pressing seat 5. The conical end of the pressing seat faces one side of the base, and the outer end faces of the two end seats are parallel. The spring includes a main structure and a coiled structure at one end of the main structure. The pressing seat is installed inside the coiled structure, and the end seat is fixed to the end of the main structure away from the pressing seat.

[0027] The outer diameter of the conical end of the clamping seat that contacts the spring is larger than the inner diameter of the contacting coil structure, so that the coil structure forms a preload at the conical end 10 of the clamping seat. The clamping seats of the two buffer components are simultaneously fixed to the base through a connector 6. Each clamping seat has an external connecting part 7 at one end facing the end seat. A limiting step is formed between the external connecting part and the main structure of the clamping seat. A protective seat 8 is installed on the external connecting part. The inner end face of the protective seat abuts against the limiting step. After the protective seat is loaded, it can transfer the force to the limiting step, and finally the base part is loaded.

[0028] The aforementioned mounting base is symmetrically provided with two mounting holes 9, which facilitates the fixing of this transverse stop mounting structure to one of the carriages at the connection between the two carriages. Typically, the aforementioned base is welded and fixed to the mounting base. The portion of the spring that mates with the end seat and the portion that mates with the clamping seat are both close-coil structures, ensuring good stability when the spring is combined with the end seat and the clamping seat.

[0029] The springs in the two buffer assemblies are arranged coaxially. The connector uses a fully threaded screw, and the clamping seat has a threaded hole in the middle that mates with the connector. The clamping seats on both sides are fixed to the base simultaneously by a fully threaded screw, so that the buffer assemblies on both sides are fixed in place at the same time. This not only ensures the stability of the structure, but also simplifies the connection operation and makes assembly convenient. During assembly, first insert the clamping seat into the inside of the spring from the end of the main structure, with the taper facing the close-coil structure side. Then, after fixing the clamping seats of the two buffer assemblies with the connector, install the protective seat on the outer connecting part of the clamping seat. Finally, install the end seat at the end of the spring main structure.

[0030] In an optional embodiment, the end seat includes a main body and an end plate on the outer side of the main body. The main body is tapered, with its tapered end facing the base. The outer diameter of the large-diameter end of the main body is larger than the inner diameter of the spring. The tapered design of the main body facilitates spring insertion. The preload between the spring main body structure and the main body ensures a tight fit between the spring and the main body, thus making it easier to maintain the stability of the assembly structure. The main body has an external thread structure with an outer diameter larger than the inner diameter of the spring main body structure. During assembly, the main body is screwed into the spring main body structure in a tight fit manner. Because there is a preload between the dense coil structure of the spring main body structure and the main body of the end seat, the stability of the fit between the end seat and the spring is effectively improved. This not only facilitates the installation of the end seat but also solves the reliability problem of the structural component connection.

[0031] like Figure 4As shown, the aforementioned protective seat has a cylindrical shape, with a receiving cavity on the end face facing the clamping seat to accommodate the outer connecting part of the clamping seat. Furthermore, the end face of the protective seat can directly abut against the limiting step of the clamping seat, resulting in good structural stability under stress. Preferably, the protective seat and spring are arranged coaxially, preventing interference. In an optional embodiment, the mounting base, base, and clamping seat are all made of metal, while the protective seat and end seat are made of non-metallic materials with energy-absorbing and buffering properties (such as plastic or rubber), protecting the existing structural components of the carriage, providing good energy absorption and buffering effects, and reducing noise during use. It is precisely due to the special structural design of the buffer assembly and the special connection form between the buffer assembly (clamping seat) and the base in this invention that the protective seats can be arranged on the outer connecting part of the clamping seat, thereby achieving the aforementioned performance. Simultaneously, the transverse stop structure provided by this invention is more compact, and while ensuring performance, multiple non-metallic structural components replace the original all-metal structure, significantly reducing the overall weight and facilitating lightweight design of light rail.

[0032] This invention uses a single connector to simultaneously fix the buffer components on both sides to the base, ensuring structural stability and simplifying assembly. Furthermore, the outer diameter of the conical end of the pressure seat in contact with the spring is larger than the inner diameter of the contacting coil structure, creating a preload on the coil structure at the conical end of the pressure seat. This serves to fix the spring and prevent it from loosening. Additionally, the stress distribution between structural components is good, and the connector is less prone to deformation and breakage.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transverse stop assembly for a light rail car, characterized in that: Includes a base fixed on a mounting base, and a buffer assembly on each side of the base. The two buffer assemblies are symmetrically arranged on both sides of the base. Each buffer assembly includes a spring, with an end seat fixed to the outer end of the spring and the inner end fixed to the base by a conical clamping seat, with the conical end of the clamping seat facing one side of the base. The spring includes a main structure and a coil structure. The end seat is fixed to the end of the main structure, and the clamping seat is installed inside the coil structure. The outer diameter of the part of the cone end of the clamping seat that contacts the spring is larger than the inner diameter of the coil structure, so that the coil structure part forms a preload at the cone end of the clamping seat. The spring and the part that mates with the end seat, as well as the part that mates with the clamping seat, are all closed-ring structures; the clamping seats of the two buffer components are simultaneously fixed to the base by a connector, and a protective seat is installed at the end of the clamping seat facing the end seat; The end seat includes a main body and an end plate on the outside of the main body. The main body is conical with its conical end facing the base side, and the outer diameter of the large diameter end of the main body is larger than the inner diameter of the spring. The main body is provided with an external thread structure, which is screwed into the inner side of the spring main body structure. Through the preload between the spring main body structure and the main body, the spring and the main body are kept in tight fit.

2. The transverse stop assembly for a light rail car according to claim 1, characterized in that: The mounting base has two symmetrical mounting holes.

3. The transverse stop assembly for a light rail car according to claim 1, characterized in that: The base is welded and fixed to the mounting seat.

4. The transverse stop assembly for a light rail car according to claim 1, characterized in that: The springs in the two buffer components are arranged coaxially.

5. The transverse stop assembly for a light rail car according to claim 1, characterized in that: The connector uses a fully threaded screw, and the clamping seat has a threaded hole that mates with the connector.

6. The transverse stop assembly for a light rail car according to claim 1, characterized in that: The protective seat has a columnar shape and is arranged coaxially with the spring.

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