A piston structure for railway braking equipment

Abstract

A piston structure for railway braking equipment includes a piston carrier and a piston base; a piston base is horizontally installed at the bottom of the piston carrier, and a pressure-resistant piston layer is fixedly installed at the bottom of the piston base; a longitudinal installation groove is opened at the top edge of the piston carrier, a screw head is installed in the longitudinal installation groove, the screw head is threadedly connected to a threaded sleeve, and the threaded sleeve is fixedly installed on the top of the piston base. The present application provides a piston structure for railway braking equipment. The structure adopts a connection and installation structure that can be replaced up and down, and the overall piston structure is divided into two groups, upper and lower; replacement and recycling are completed in conjunction with regular maintenance and inspection, so as to achieve cost reduction and efficiency improvement. At the same time, the bottom piston increases the force strength of the rubber layer through the structure of the arc-shaped groove, and at the same time, it can also increase the force area of ​​the rubber layer, which solves the technical problem that the rubber layer is deformed due to pressure load during movement, or uneven force leads to reduced braking effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of pistons, and in particular relates to a piston structure for railway braking equipment. Background Art

[0002] It is directly related to the safety and stability of train operation. With the continuous development of railway transportation technology and the increasing requirements for safety performance, higher requirements are put forward for the design, materials, assembly, lubrication and sealing of brake pistons.

[0003] Moreover, during the braking process of large vehicles, the piston has a huge load. In a high-intensity use environment, the piston will be damaged due to the pressure at the bottom during the reciprocating motion. At the same time, the piston as a whole will also have end surface wear during long-term use, affecting the braking requirements.

[0004] Therefore, the present application provides a piston structure for railway brake equipment. The structure adopts a connection and installation structure that can be replaced up and down, and divides the overall piston structure into two groups, upper and lower; replacement and recycling are completed in conjunction with regular maintenance and inspection to achieve cost reduction and efficiency improvement. At the same time, the bottom piston increases the force strength of the rubber layer through the structure of the arc groove, and at the same time, it can also increase the force area of ​​the rubber layer, solving the technical problem that the rubber layer is deformed due to pressure load during movement, or uneven force leads to reduced braking effect. Summary of the invention

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A piston structure for railway braking equipment comprises a piston carrier and a piston base; the piston carrier is horizontally mounted with a piston base, and the bottom of the piston base is fixedly mounted with a pressure-resistant piston layer;

[0007] A longitudinal installation groove is provided on the top edge of the piston carrier, a screw head is installed in the longitudinal installation groove, the screw head is threadedly connected to a threaded sleeve, and the threaded sleeve is fixedly installed on the top of the piston base;

[0008] A driving rod groove is provided at the center of the top of the piston carrier, and a transverse mounting hole is transversely provided in the driving rod groove.

[0009] Furthermore, the piston base includes a base carrier and a load-bearing plate;

[0010] An arc-shaped groove is provided at the center of the bottom of the base carrier, and a bearing pad is encapsulated in the arc-shaped groove, and a pressure-resistant piston layer is filled in the bearing pad;

[0011] The bottom end surface of the base carrier is integrally connected with a load-bearing plate, and the load-bearing plate is in pressure-bearing contact with the rubber layer.

[0012] Furthermore, a pressure-resistant piston layer is built into the arc-shaped groove at the bottom of the base carrier, and the inner end surface of the pressure-resistant piston layer is in contact with the inner wall of the load-bearing pad, and the pressure-resistant piston layer presents a page-level structure.

[0013] Furthermore, the pressure-resistant piston layer extends from the center to the side of the base carrier, and the side of the base carrier is wrapped with a limited interlayer;

[0014] The limiting interlayer extends along the groove, and the extending portion of the limiting interlayer is firmly connected to the side groove of the base carrier (8).

[0015] Furthermore, the base carrier is integrally connected with a reinforcement ring piece along the upper section of the load-bearing plate, and a limited interlayer is retained between two adjacent groups of reinforcement ring pieces.

[0016] The beneficial effects of the utility model are:

[0017] Compared with the prior art, the present application provides a piston structure for railway brake equipment. The structure adopts a connection and installation structure that can be replaced up and down, and divides the overall piston structure into two groups, upper and lower; replacement and recycling are completed in conjunction with regular maintenance and inspection to achieve cost reduction and efficiency improvement. At the same time, the bottom piston increases the force strength of the rubber layer through the arc-shaped groove structure, and at the same time, it can also increase the force area of ​​the rubber layer, solving the technical problem that the rubber layer is deformed due to pressure load during movement, or uneven force leads to reduced braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic structural diagram of a piston structure for railway braking equipment.

[0019] Figure 2 The utility model is a schematic diagram of the installation structure of a piston structure for railway braking equipment.

[0020] Figure 3 The utility model is a schematic structural diagram of a piston structure for railway braking equipment with a rubber layer.

[0021] List of Figure Symbols:

[0022] 1 is a driving rod groove, 2 is a transverse mounting hole, 3 is a longitudinal mounting groove, 4 is a piston base, 5 is a piston carrier, 6 is a screw head, 7 is a screw sleeve, 8 is a base carrier, and 9 is a load-bearing pad.

[0023] 4-1 is a reinforcing ring plate, 4-2 is a load-bearing plate, 11-1 is a pressure-resistant piston layer, and 11-2 is a limiting interlayer. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a piston structure for railway brake equipment includes a piston carrier and a piston base; a piston base 4 is horizontally installed at the bottom of the piston carrier 1, and a pressure-resistant piston layer 11-1 is fixedly installed at the bottom of the piston base 4; wherein the piston is composed of the piston carrier 1, the piston base 4 and the pressure-resistant piston layer 11-1, and regular maintenance and overhaul are completed through a replaceable structure. If the structure is damaged and the whole is replaced and scrapped, the subsequent maintenance and production costs will also be increased.

[0026] The top edge of the piston carrier 1 is provided with a longitudinal mounting groove 3, in which a screw head 6 is installed, and the screw head 6 is screwed with a screw sleeve 7, and the screw sleeve 7 is fixedly installed on the top of the piston base 4. The upper and lower screwed mounting structures, while using the top convex structure to protect the groove, ensure that the internal structure of the groove is not damaged by external contact factors.

[0027] A driving rod groove 1 is provided at the center of the top of the piston carrier 1, and a transverse mounting hole 2 is provided transversely in the driving rod groove 1. The driving rod is inserted into the driving rod groove 1, and the transverse fixing installation process is completed by matching the transverse mounting hole 2. The hidden mounting joint improves the structural safety performance of the overall structure.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the piston base 4 includes a base carrier 8 and a bearing plate 4-2;

[0029] An arc-shaped groove is provided at the center of the bottom of the base carrier 8, and a load-bearing pad 9 is encapsulated in the arc-shaped groove, and a pressure-resistant piston layer 11-1 is filled in the load-bearing pad 9; a load-bearing plate 4-2 is integrally connected to the bottom end face of the base carrier 8, and the load-bearing plate 4-2 is in pressure-bearing contact with the rubber layer. Among them, the load-bearing pad 9 is a pressure-bearing contact structure enhanced by metal processing technology at the bottom of the base carrier 8. It can withstand more pressure during the high-pressure rubber layer bonding period, and since the load-bearing pad 9 is an arc-shaped end face, it can have the effect of concentrated absorption of pressure. Since more force is absorbed in the center position, the structure of the edge of the rubber pad can be prevented from warping or damage due to pressure accumulation.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, the anti-pressure piston layer 11-1 is built into the arc-shaped groove at the bottom of the base carrier 8, and the inner end surface of the anti-pressure piston layer 11-1 is in contact with the inner wall of the bearing pad 9, and the anti-pressure piston layer 11-1 is a flat structure. Among them, the anti-pressure piston layer 11-1 is a rubber cushion layer with a thickened structure, and the thickened structure is adapted to the inner wall of the bearing pad 9 to ensure the expansion of the force-bearing area.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the compression-resistant piston layer 11-1 extends from the center to the side of the base carrier 8, and the side of the base carrier 8 is wrapped with a limiting interlayer 11-2; the limiting interlayer 11-2 extends along the groove, and the extending portion of the limiting interlayer 11-2 is tightly connected to the groove on the side of the base carrier 8. Among them, the limiting interlayer 11-2 allows the rubber layer on the side to further complete the fixed installation process, ensuring the installation stability of the rubber layer.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the base carrier 8 is integrally connected with a reinforcing ring piece 4-1 along the upper section of the bearing plate 4-2, and a limited interlayer 11-2 is retained between two adjacent groups of reinforcing ring pieces 4-1. The reinforcing ring piece 4-1 is designed to enhance the connection strength between the base carrier 8 and the rubber cushion layer.

[0033] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A piston structure for railway braking equipment, comprising a piston carrier and a piston base; wherein: A piston base (4) is horizontally mounted on the bottom of the piston carrier (5), and a pressure-resistant piston layer (11-1) is fixedly mounted on the bottom of the piston base (4); A longitudinal installation groove (3) is provided on the top edge of the piston carrier (5), a screw head (6) is installed in the longitudinal installation groove (3), the screw head (6) is screwed to a screw sleeve (7), and the screw sleeve (7) is fixedly installed on the top of the piston base (4); A driving rod groove (1) is provided at the center of the top of the piston carrier (5), and a transverse mounting hole (2) is transversely provided in the driving rod groove (1).

2. The piston structure for railway braking equipment according to claim 1 is characterized in that: The piston base (4) comprises a base carrier (8) and a load-bearing plate (4-2); An arc-shaped groove is provided at the center of the bottom of the base carrier (8), and a load-bearing pad (9) is enclosed in the arc-shaped groove. The load-bearing pad (9) is filled with a pressure-resistant piston layer (11-1); The bottom end surface of the base carrier (8) is integrally connected with a load-bearing plate (4-2), and the load-bearing plate (4-2) is in pressure-bearing contact with the rubber layer.

3. The piston structure for railway braking equipment according to claim 2 is characterized in that: The anti-pressure piston layer (11-1) is built into the arc-shaped groove at the bottom of the base carrier (8), the inner end surface of the anti-pressure piston layer (11-1) is in contact with the inner wall of the bearing pad (9), and the anti-pressure piston layer (11-1) presents a page-level structure.

4. The piston structure for railway braking equipment according to claim 3 is characterized in that: The pressure-resistant piston layer (11-1) extends along the center toward the side of the base carrier (8), and the side of the base carrier (8) is wrapped with a limited interlayer (11-2); The limiting interlayer (11-2) extends into the groove, and the portion of the limiting interlayer (11-2) that extends into the groove is firmly connected to the groove on the side of the base carrier (8).

5. The piston structure for railway braking equipment according to claim 4 is characterized in that: The base carrier (8) is integrally connected with a reinforcement ring piece (4-1) along the upper section of the load-bearing plate (4-2), and a limited interlayer (11-2) is retained between two adjacent groups of reinforcement ring pieces (4-1).

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