Wear-resistant guider piston

Abstract

The utility model relates to the technical field of pistons, and discloses a wear-resistant guider piston which comprises a protective barrel, a guider body is arranged at the upper end of the inner side of the protective barrel, a top cover is arranged at the top end of the protective barrel, an oil cylinder is arranged on the inner side of the protective barrel, and a damping valve is arranged at the lower end of the inner side of the oil cylinder. And a piston rod is movably mounted on the inner sides of the oil cylinder and the guider body. In the moving process of the piston body, when the piston body rubs with the inner wall of an oil cylinder, the friction coefficient can be reduced due to the action of hydraulic oil, meanwhile, the protective sleeve is made of high manganese steel materials, and therefore the abrasion-resistant strength is improved according to the abrasion-resistant and compression-resistant characteristics of the high manganese steel materials; and through mutual extrusion buffering of the rubber buffering pads and buffering under the action of the buffering springs after the ejector rod pushes the baffle to move, the contact amount of the piston body, the guider body and the damping valve can be reduced, then abrasion is reduced, and the service life of the piston body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of piston technology, specifically to a wear-resistant guide piston. Background Technology

[0002] The piston is a reciprocating component in the cylinder block of a car engine. The basic structure of the piston can be divided into the top, head, and skirt. The piston top is the main part that makes up the combustion chamber, and its shape is related to the type of combustion chamber used. Gasoline engines mostly use flat-top pistons, which have the advantage of a small heat absorption area.

[0003] According to a search, Chinese patent document publication number CN201377535Y discloses a twin-cylinder shock absorber. This absorber utilizes the vibration generated by friction between the orifice wall and the oil, as well as the internal friction between oil molecules, as the liquid passes through a small orifice to create damping force and reduce impact. Whether the oil moves upward or downward, it passes through a valve orifice on the piston valve, slowing its movement. The degree of slowing is largely related to the orifice diameter and the viscosity of the oil. A portion of the impact force is absorbed by the oil and converted into heat energy, thus reducing vibration. However, during long-term use, prolonged friction between the piston's outer surface and the cylinder can lead to severe wear, reducing its lifespan. Furthermore, the friction between the piston and cylinder during buffering generates a significant amount of heat. Although this heat can be cooled by the hydraulic oil inside the cylinder, frequent use causes heat accumulation, increasing friction and accelerating wear, resulting in poor wear resistance. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a wear-resistant guide piston that offers high wear resistance and extended piston lifespan, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant guide piston, comprising a protective cylinder, a guide body disposed at the upper end of the inner side of the protective cylinder, a top cover disposed at the top of the protective cylinder, a hydraulic cylinder disposed inside the protective cylinder, a damping valve disposed at the lower end of the inner side of the hydraulic cylinder, a piston rod movably mounted inside the hydraulic cylinder and the guide body, a piston body fixedly mounted at the lower end of the piston rod, a heat-conducting seat fixedly mounted inside the piston body, and heat dissipation fins disposed on the top side of the guide body.

[0008] Preferably, the outer side of the top cover is provided with a mounting groove, the inner side of the mounting groove is provided with a plurality of equidistant heat dissipation holes, and a filter screen is provided on the inner side of the mounting groove, and the piston rod has a hollow structure.

[0009] Through the above technical solution, the installation groove and heat dissipation holes facilitate the entry of outside air into the top cover during use, thereby easily dissipating heat and preventing heat accumulation that could lead to increased wear. Furthermore, the filter helps to prevent larger impurities in the air from entering and causing pollution.

[0010] Preferably, a cavity is formed on the inner side of the guide body, and a heat-conducting block is fixedly installed on the inner side of the cavity. The heat-conducting block has a circular structure, and heat dissipation fins are fixedly installed on the top side of the heat-conducting block. A total of four heat dissipation fins are provided, which are arranged in a ring at equal intervals on the top side of the heat-conducting block.

[0011] Through the above technical solution, during use, the heat from the oil cylinder is absorbed by the circular heat-conducting block and then directed to the heat dissipation fins, thereby facilitating heat dissipation, improving the heat dissipation effect during buffering, further reducing wear, and increasing service life.

[0012] Preferably, a buffer column is movably installed on the inner side of the guide body, a baffle is fixedly installed on the bottom side of the buffer column, a total of four buffer columns are provided, and a buffer spring is fixedly installed between the buffer column and the guide body.

[0013] With the above technical solution, during use, the rubber buffer pads squeeze against each other and the baffle moves under the action of the buffer spring after being pushed by the push rod. This helps to reduce the contact between the piston body and the guide body and the damping valve, thereby reducing wear and increasing the service life of the piston body.

[0014] Preferably, a groove is provided on the outer side of the piston body, and a protective sleeve is fixedly installed on the inner side of the groove. The protective sleeve is made of high manganese steel. A push rod is fixedly installed on the top side of the piston body. A total of four push rods are provided, which are arranged in a ring at equal intervals on the top side of the piston body.

[0015] Through the above technical solution, during the movement of the piston body, when it rubs against the inner wall of the oil cylinder, the friction coefficient can be reduced due to the action of hydraulic oil. At the same time, since the protective sleeve is made of high manganese steel, the wear resistance strength is improved based on the wear resistance and pressure resistance characteristics of high manganese steel.

[0016] Preferably, a rubber buffer pad is fixedly installed on the bottom side of the heat-conducting seat. There are two rubber buffer pads in total. One of the rubber buffer pads is fixedly installed on the top side of the damping valve. Several heat dissipation copper pipes are evenly arranged on the top side of the heat-conducting seat, and the heat dissipation copper pipes are located inside the piston rod.

[0017] Through the above technical solution, heat is absorbed by the heat-conducting seat and then guided to the heat dissipation copper tube, thereby avoiding heat accumulation, which would lead to temperature rise, increased friction and wear. Subsequently, heat is dissipated through the heat dissipation holes during the back-and-forth movement of the piston rod, improving the heat dissipation effect and reducing wear.

[0018] Compared with the prior art, this utility model provides a wear-resistant guide piston, which has the following beneficial effects:

[0019] 1. In the process of piston body movement, when it rubs against the inner wall of the oil cylinder, the friction coefficient can be reduced due to the action of hydraulic oil. At the same time, since the protective sleeve is made of high manganese steel, the wear resistance and pressure resistance of high manganese steel are improved. Furthermore, the mutual compression of rubber buffer pads and the buffering effect of the buffer spring after the push rod pushes the baffle to move are also buffered, which helps to reduce the contact amount between the piston body and the guide body and the damping valve, thereby reducing wear and improving the service life of the piston body.

[0020] 2. In this utility model, the heat generated by the friction of the piston body movement is partly cooled by hydraulic oil, and partly absorbed by the heat-conducting seat and then directed to the heat dissipation copper pipe, thereby avoiding heat accumulation, which would lead to temperature rise, increased friction and wear. Subsequently, the heat is dissipated through the heat dissipation holes during the reciprocating movement of the piston rod, and the heat on the outside of the cylinder is absorbed by the heat-conducting block and then directed to the heat dissipation fins for heat dissipation, improving the heat dissipation effect during buffering, further reducing wear and increasing service life. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0022] Figure 2 This is a front view cross-sectional structural diagram of the protective cylinder of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the piston body of this utility model;

[0024] Figure 4 This is a bottom-view three-dimensional structural diagram of the guide body of this utility model;

[0025] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the diagram;

[0026] Figure 6 This utility model Figure 2 A magnified structural diagram at point B in the diagram.

[0027] The components include: 1. Protective cylinder; 2. Guide body; 3. Top cover; 4. Oil cylinder; 5. Damping valve; 6. Piston rod; 7. Piston body; 8. Heat-conducting seat; 9. Heat dissipation fins; 301. Mounting groove; 302. Heat dissipation hole; 303. Filter screen; 201. Cavity; 202. Heat-conducting block; 203. Buffer column; 2031. Baffle; 701. Groove; 702. Protective sleeve; 703. Top rod; 801. Rubber buffer pad; 802. Copper heat dissipation pipe. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] like Figure 1-6 As shown, the present invention provides a wear-resistant guide piston, including a protective cylinder 1, a guide body 2 disposed at the upper end of the inner side of the protective cylinder 1, a top cover 3 disposed at the top of the protective cylinder 1, a hydraulic cylinder 4 disposed inside the protective cylinder 1, a damping valve 5 disposed at the lower end of the inner side of the hydraulic cylinder 4, a piston rod 6 movably mounted inside the hydraulic cylinder 4 and the guide body 2, a piston body 7 fixedly mounted at the lower end of the piston rod 6, a heat-conducting seat 8 fixedly mounted inside the piston body 7, and heat dissipation fins 9 disposed on the top side of the guide body 2.

[0031] Specifically, the outer side of the top cover 3 has a mounting groove 301, and the inner side of the mounting groove 301 has several sets of equidistantly arranged heat dissipation holes 302. A filter screen 303 is also installed inside the mounting groove 301, and the piston rod 6 has a hollow structure. The advantages are that the mounting groove 301 and the heat dissipation holes 302 facilitate the entry of outside air into the top cover 3 during use, thus easily dissipating heat and preventing heat buildup that could lead to increased wear. Furthermore, the filter screen 303 helps prevent larger impurities in the air from entering and causing contamination.

[0032] Specifically, a cavity 201 is formed on the inner side of the guide body 2, and a heat-conducting block 202 is fixedly installed inside the cavity 201. The heat-conducting block 202 has a circular structure, and heat dissipation fins 9 are fixedly installed on the top side of the heat-conducting block 202. There are a total of four heat dissipation fins 9, which are arranged in a ring at equal intervals on the top side of the heat-conducting block 202. The advantage is that the heat absorbed by the heat-conducting block 202 from the oil cylinder 4 is then dissipated to the heat dissipation fins 9, which improves the heat dissipation effect during buffering, further reduces wear, and increases service life.

[0033] Specifically, a buffer column 203 is movably installed on the inner side of the guide body 2, and a baffle 2031 is fixedly installed on the bottom side of the buffer column 203. A total of four buffer columns 203 are provided, and a buffer spring is fixedly installed between the buffer column 203 and the guide body 2. The advantage is that the buffering is achieved through the mutual compression of the rubber buffer pads 801 and the buffering effect of the buffer spring after the baffle 2031 is moved by the push rod 703. This helps reduce the contact between the piston body 7 and the guide body 2 and the damping valve 5, thereby reducing wear and increasing the service life of the piston body 7.

[0034] Example 2:

[0035] like Figure 1-6 As shown, this is an improvement on the previous embodiment. Specifically, a groove 701 is formed on the outer side of the piston body 7, and a protective sleeve 702 is fixedly installed on the inner side of the groove 701. The protective sleeve 702 is made of high manganese steel, and a push rod 703 is fixedly installed on the top side of the piston body 7. A total of four push rods 703 are provided, which are arranged in a ring at equal intervals on the top side of the piston body 7. The advantage is that when the piston body 7 rubs against the inner wall of the cylinder 4, the friction coefficient can be reduced due to the action of hydraulic oil. At the same time, since the protective sleeve 702 is made of high manganese steel, the wear resistance is improved based on the wear-resistant and pressure-resistant characteristics of high manganese steel.

[0036] Specifically, a rubber buffer pad 801 is fixedly installed on the bottom side of the heat-conducting seat 8. Two rubber buffer pads 801 are provided in total. One of the rubber buffer pads 801 is fixedly installed on the top side of the damping valve 5. Several heat-dissipating copper pipes 802 are evenly arranged on the top side of the heat-conducting seat 8, and the heat-dissipating copper pipes 802 are located inside the piston rod 6. The advantage is that heat absorbed by the heat-conducting seat 8 is guided to the heat-dissipating copper pipes 802, thus avoiding heat accumulation, which would lead to increased temperature, increased friction, and wear. Subsequently, heat is dissipated through the heat dissipation holes 302 during the back-and-forth movement of the piston rod 6, improving heat dissipation and reducing wear.

[0037] In use, the piston rod 6 pushes the piston body 7 to move inside the cylinder 4, thereby pushing the hydraulic oil inside the cylinder 4. This hydraulic oil then enters the buffer chamber of the protective cylinder 1 through the channel on the damping valve 5, thus providing pressure boosting and buffering. During the movement of the piston body 7, when it rubs against the inner wall of the cylinder 4, the hydraulic oil reduces the coefficient of friction. Simultaneously, because the protective sleeve 702 is made of high-manganese steel, its wear-resistant and pressure-resistant properties enhance its wear resistance. Furthermore, the rubber buffer pads 801 provide mutual compression buffering, and the push rod 703 pushes the baffle 2031 to move, which, under the action of the buffer spring, further contributes to the buffering effect. The buffering mechanism helps reduce the contact between the piston body 7 and the guide body 2 and the damping valve 5, thereby reducing wear and increasing the service life of the piston body 7. The heat generated by the friction of the piston body 7 during movement is partially cooled by the hydraulic oil and partially absorbed by the heat-conducting seat 8 and then directed to the heat dissipation copper pipe 802, thus preventing heat accumulation, which would lead to increased temperature, friction, and wear. Subsequently, the heat is dissipated through the heat dissipation hole 302 during the back-and-forth movement of the piston rod 6, and the heat on the outside of the cylinder 4 is absorbed by the heat-conducting block 202 and then directed to the heat dissipation fins 9 for heat dissipation, improving the heat dissipation effect during buffering, further reducing wear, and increasing service life.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear resistant pilot piston comprising a guard barrel (1) characterised in that: The upper end of the inner side of the protection cylinder (1) is provided with a guide body (2), the top end of the protection cylinder (1) is provided with a top cover (3), the inner side of the protection cylinder (1) is provided with an oil cylinder (4), the lower end of the inner side of the oil cylinder (4) is provided with a damping valve (5), the inner side of the oil cylinder (4) and the guide body (2) is movably mounted with a piston rod (6), the lower end of the piston rod (6) is fixedly mounted with a piston body (7), the inner side of the piston body (7) is fixedly mounted with a heat conduction seat (8), and the top side of the guide body (2) is provided with a heat dissipation fin (9).

2. A wear resistant guider piston according to claim 1, characterized in that: The outer side of the top cover (3) is provided with a mounting groove (301), a plurality of groups of equidistantly arranged heat dissipation holes (302) are formed in the inner side of the mounting groove (301), and a filter screen (303) is arranged on the inner side of the mounting groove (301), and the piston rod (6) is in a hollow structure.

3. A wear resistant guider piston according to claim 1, characterized in that: The inner side of the guide body (2) is provided with a cavity (201), the inner side of the cavity (201) is fixedly mounted with a heat conduction block (202), the heat conduction block (202) is in a circular structure, the top side of the heat conduction block (202) is fixedly mounted with a heat dissipation fin (9), and the heat dissipation fin (9) is arranged in four, which are annularly and equidistantly arranged on the top side of the heat conduction block (202).

4. A wear resistant guider piston according to claim 1, characterized in that: The inner side of the guide body (2) is movably mounted with a buffer column (203), the bottom side of the buffer column (203) is fixedly mounted with a baffle (2031), the buffer column (203) is provided with four, and the buffer column (203) and the guide body (2) are fixedly mounted with a buffer spring.

5. A wear resistant guider piston according to claim 1, characterized in that: The outer side of the piston body (7) is provided with a groove (701), the inner side of the groove (701) is fixedly mounted with a protective sleeve (702), the protective sleeve (702) is made of high manganese steel, and the top side of the piston body (7) is fixedly mounted with a top rod (703), the top rod (703) is provided with four, which are annularly and equidistantly arranged on the top side of the piston body (7).

6. A wear resistant guider piston according to claim 1, characterized in that: The bottom side of the heat conduction seat (8) is fixedly mounted with a rubber buffer pad (801), the rubber buffer pad (801) is provided with two, one of which is fixedly mounted on the top side of the damping valve (5), and a plurality of heat dissipation copper pipes (802) are equidistantly arranged on the top side of the heat conduction seat (8), and the heat dissipation copper pipes (802) are located on the inner side of the piston rod (6).

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