Gas spring piston with wear-resistant coating

Abstract

The utility model discloses a gas spring piston with a wear-resistant coating, and belongs to the technical field of gas spring pistons. Comprising a gas spring piston base body, the outer wall of the gas spring piston base body is coated with a wear-resistant coating, the wear-resistant coating sequentially comprises a hard alloy layer, a corrosion-resistant layer, a steel wire grid reinforcing layer and a reinforcing layer from inside to outside, the gas spring piston base body comprises a piston head, a piston middle and a piston tail, and a connecting part is arranged on one side of the piston head. External threads are arranged on the outer wall of one end of the connecting part, and connecting holes matched with the connecting part are formed in the piston middle part and the piston tail part. According to the gas spring piston with the wear-resistant coatings, the wear resistance, the corrosion resistance and the sealing performance of the gas spring piston are effectively enhanced through the precise detachable structural design and the multiple wear-resistant coatings, it is ensured that a gas spring can bear stress caused by high loads, high pressure and frequent movement in the working process, and the service life of the gas spring piston is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring piston technical field, concretely is air spring piston with wear -resisting coating. BACKGROUND

[0002] Traditional air spring piston adopts ordinary steel or cast iron as base material, and its surface is treated by simple heat treatment or surface spraying process. However, these treatment methods are difficult to effectively improve the wear resistance of the piston under high frequency friction or high load, and even prone to problems such as accelerated wear and corrosion, resulting in greatly shortened service life of the air spring. SUMMARY

[0003] The utility model discloses a kind of air spring pistons with wear -resisting coating, air spring piston is effectively enhanced wear resistance, corrosion resistance and sealing by its precise detachable structure design and multilayer wear -resisting coating, ensure that air spring can withstand stress caused by high load, high pressure and frequent movement in working process, prolong its service life, solve the problems in prior art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of air spring piston with wear -resisting coating, including air spring piston base body, the outer wall of the air spring piston base body is coated with wear -resisting coating, wear -resisting coating is from inside to outside in turn hard metal layer, corrosion -resistant layer, steel wire grid reinforcing layer and strengthening layer, air spring piston base body includes piston head, piston middle part and piston tail, the side of piston head is provided with connecting portion, the outer wall of one end of connecting portion is provided with external thread, and the inside of piston middle part and piston tail is all set with the connecting hole that is adapted to connecting portion.

[0005] Preferably, the side of the piston tail away from the piston middle part is provided with a protrusion, and the protrusion is an integral structure with the piston tail, and the piston tail is threadedly connected with the connecting portion.

[0006] Preferably, the air spring piston base body is provided with a connecting rod mounting hole inside, and the connecting rod mounting hole penetrates through the entire air spring piston base body.

[0007] Preferably, the piston head, the piston middle part and the piston tail are all provided with a sealing groove, and a sealing ring is mounted into the sealing groove.

[0008] Preferably, the inner cavity of the steel wire grid reinforcing layer is provided with a staggered steel wire structure.

[0009] Compared with the prior art, the utility model has the beneficial effects as follows:

[0010] 1. This utility model discloses a gas spring piston with a wear-resistant coating. The wear-resistant coating on the surface of the gas spring piston includes a hard alloy layer, a corrosion-resistant layer, a steel wire mesh reinforcement layer, and a strengthening layer, which can effectively improve the wear resistance of the piston. During long-term operation, the wear-resistant coating on the piston surface can reduce friction and wear, and extend the service life of the gas spring piston. The advantages of this coating are particularly prominent under high-frequency operation or heavy load conditions.

[0011] 2. The present invention provides a gas spring piston with a wear-resistant coating. One end of the connecting part is provided with an external thread, which connects to the threaded structure at the tail of the piston. This facilitates quick disassembly and replacement of the sealing ring and other related components, thereby simplifying the maintenance process. The piston base is provided with a connecting rod mounting hole that runs through the entire gas spring piston base, allowing the connecting rod of the piston rod to be easily installed and fixed to the piston base, greatly simplifying the installation process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the disassembled structure of the gas spring piston base of this utility model;

[0014] Figure 3 This is a bottom-view, disassembled structural diagram of the gas spring piston base of this utility model;

[0015] Figure 4 This is a schematic diagram of the wear-resistant coating structure of this utility model.

[0016] In the figure: 1. Gas spring piston base; 2. Wear-resistant coating; 3. Sealing ring; 101. Piston head; 102. Piston middle; 103. Piston tail; 104. Connecting part; 105. Sealing groove; 106. Protrusion; 107. Connecting rod mounting hole; 201. Hard alloy layer; 202. Corrosion-resistant layer; 203. Steel wire mesh reinforcement layer; 204. Reinforcing layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This embodiment provides the following technical solution:

[0019] The gas spring piston with wear-resistant coating comprises a gas spring piston base body 1, and a wear-resistant coating 2 is coated on the outer wall of the gas spring piston base body 1; the wear-resistant coating 2 comprises, from inside to outside, a hard alloy layer 201, a corrosion-resistant layer 202, a steel wire mesh reinforcing layer 203 and a reinforcing layer 204; the gas spring piston base body 1 comprises a piston head 101, a piston middle part 102 and a piston tail 103; and one side of the piston head 101 is provided with a connecting part 104 which is in an integral structure with the piston head 101.

[0020] Specifically, the inner cavity of the steel wire mesh reinforcing layer 203 is provided with a staggered steel wire structure, which can improve the deformation resistance and compression resistance of the gas spring piston base body 1.

[0021] The hard alloy layer 201 is made of nickel-chromium alloy, which has high strength and corrosion resistance, thereby improving the stability of the gas spring piston base body 1 during work.

[0022] The corrosion-resistant layer 202 is made of high-chromium austenitic welding material and is formed by surfacing, and the high-chromium austenite has high toughness and plasticity and good corrosion resistance, thereby protecting the gas spring piston base body 1 from oxidation and corrosion.

[0023] The reinforcing layer 204 is made of tungsten carbide alloy coating, which further improves the wear resistance of the gas spring piston base body 1 during work.

[0024] In the embodiment, the outer wall of one end of the connecting part 104 is provided with external threads, the inner part of the piston middle part 102 and the piston tail 103 are both provided with connecting holes matched with the connecting part 104, the side of the piston tail 103 away from the piston middle part 102 is provided with a protrusion 106 which is in an integral structure with the piston tail 103, and the piston tail 103 is threadedly connected with the connecting part 104.

[0025] Specifically, one end of the connecting part 104 of the piston head 101 penetrates through the piston middle part 102 and is threadedly connected with the piston tail 103, which facilitates the replacement of the sealing ring 3, thereby improving the use stability of the piston.

[0026] In the embodiment, the gas spring piston base body 1 is provided with a connecting rod mounting hole 107 which penetrates through the entire gas spring piston base body 1, so as to facilitate the installation and fixation of the connecting rod of the piston rod with the gas spring piston base body 1.

[0027] In the embodiment, the piston head 101, the piston middle part 102 and the piston tail 103 are all provided with sealing grooves 105, the sealing ring 3 is installed in the sealing grooves 105, and the sealing grooves 105 facilitate the sealing of the connection between the piston middle part 102 and the piston head 101 and the piston tail 103.

[0028] Working principle: in use, in turn, the sealing ring 3, piston middle part 102 and sealing ring 3 are installed on the piston head 101, then the piston tail 103 is fixed with the connecting part 104 by screwing, after that the connecting rod of the piston rod is inserted into the connecting rod mounting hole 107 inside and fixed by using the bottom cap, thus the installation and connection between the piston and the piston rod are completed.

Claims

1. A gas spring piston with a wear-resistant coating, comprising a gas spring piston base body (1), characterized in that: The outer wall of the gas spring piston base body (1) is coated with a wear-resistant coating (2), and the wear-resistant coating (2) comprises, from inside to outside, a hard alloy layer (201), a corrosion-resistant layer (202), a steel wire mesh reinforcing layer (203), and a reinforcing layer (204).

2. A gas spring piston with a wear-resistant coating according to claim 1, characterized in that: The piston tail portion (103) is provided with a protrusion (106) on the side away from the piston middle portion (102), and the protrusion (106) is an integral structure with the piston tail portion (103).

3. A gas spring piston with a wear-resistant coating according to claim 1, characterized in that: The gas spring piston base body (1) is provided with a connecting rod mounting hole (107) inside and the connecting rod mounting hole (107) penetrates through the entire gas spring piston base body (1).

4. A gas spring piston with a wear-resistant coating according to claim 1, characterized in that: The piston head portion (101), the piston middle portion (102), and the piston tail portion (103) are all provided with a sealing groove (105), and a sealing ring (3) is installed in the sealing groove (105).

5. A gas spring piston with a wear-resistant coating according to claim 1, characterized in that: The inner cavity of the steel wire mesh reinforcing layer (203) is provided with a staggered distribution of steel wire structures.

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