Locomotive piston with low expansion coefficient

Abstract

The utility model discloses a locomotive piston with a low expansion coefficient. The locomotive piston comprises a piston body, an anti-expansion assembly and a heat conduction assembly. According to the locomotive piston with the low expansion coefficient, the reinforcing cover arranged on the upper portion of the piston body in the sleeving mode is made of the alloy material with the low expansion coefficient, expansion at the positions of a gas ring and an oil ring on the piston body can be reduced when the piston body is used, and therefore the problems of abrasion noise and the like caused by expansion at the positions of the gas ring and the oil ring on the piston body are solved; the reinforcing cover is clamped through clamping blocks on the two sides of the bottom and locked through screws, the installation stability of the reinforcing cover is guaranteed, meanwhile, the problem of rotation of the reinforcing cover in use can be avoided, and meanwhile heat conduction pieces installed on the two sides of the bottom of the reinforcing cover and a plurality of sets of heat conduction strips connected to the lower ends of the heat conduction pieces in the piston body can be prevented from being damaged at the high temperature of the reinforcing cover. And heat is conducted into engine oil at the lower part through the heat-conducting fins and the heat-conducting strips at the bottom, so that the temperature of the reinforcing cover is reduced, and high-temperature expansion during use is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, in particular to a locomotive piston with a low expansion coefficient. Background Art

[0002] The locomotive piston is an important component in the engine. Usually, the expansion coefficient of the piston is affected by many factors, including the type of material, temperature changes, pressure changes, etc. The thermal expansion coefficient of the piston material is the key factor in determining its expansion coefficient. Some materials have a lower thermal expansion coefficient, such as certain specific alloys. The pistons made of these materials have a smaller rate of volume increase when heated, so they are called low expansion coefficient pistons. Locomotive pistons with low expansion coefficients can also help reduce friction and wear inside the engine, improve engine performance and service life, and at the same time, pistons with low expansion coefficients can also reduce engine noise and vibration and improve ride comfort.

[0003] Existing pistons, such as a lightweight piston disclosed in publication number CN220285873U, can reduce the contact area between the piston skirt and the cylinder liner, reduce friction work, and achieve energy saving, emission reduction, friction reduction, and reliability. However, the outer end gas ring and oil ring of this piston are not reinforced to prevent expansion, which makes the expansion of the gas ring and oil ring of the piston working at high temperature for a long time cause noise and wear problems during piston movement. Therefore, we propose a locomotive piston with a low expansion coefficient. Utility Model Content

[0004] The main purpose of the utility model is to provide a locomotive piston with a low expansion coefficient, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A locomotive piston with a low expansion coefficient comprises a piston body, an anti-expansion component and a heat-conducting component, wherein the anti-expansion component comprises a mounting port arranged on the outer side of the upper part of the piston body, and a reinforcing cover movably arranged in the mounting port, an air ring and an oil ring are respectively arranged on the upper and lower ends of the outer side of the reinforcing cover, and blocks are fixedly installed on both sides of the reinforcing cover, and slots are provided on both sides of the upper end of the piston body, and the slots and the blocks match each other, and fixing blocks are fixedly arranged on the outer sides of the slots in the piston body.

[0007] Preferably, the reinforcement cover is made of high-silicon aluminum alloy.

[0008] Preferably, the anti-expansion assembly further comprises mounting holes and threaded holes respectively provided on both sides of the clamping block and the fixing block.

[0009] Preferably, the anti-expansion assembly further comprises screws movably mounted in the mounting holes at both ends of the piston body and in the threaded holes.

[0010] Preferably, the heat-conducting assembly includes heat-conducting plates fixedly installed at both ends of the reinforcing cover, and openings opened at both sides of the top of the piston body, and the openings match the heat-conducting plates.

[0011] Preferably, the heat-conducting component further comprises notches provided on both sides of the bottom of the piston body, and a plurality of groups of heat-conducting strips arranged and fixedly installed inside the notches.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, the reinforcing cover sleeved on the upper part of the piston body is made of an alloy material with a low expansion coefficient, which can reduce the expansion of the gas ring and the oil ring on the piston body during use, thereby avoiding the problems of wear and noise caused by the expansion of the gas ring and the oil ring on the piston body. The reinforcing cover is engaged with the clamping blocks on both sides of the bottom and locked with screws, which ensures the stability of the reinforcing cover installation and avoids the problem of rotation during use. At the same time, the installation of the reinforcing cover also has the advantage of convenient operation.

[0014] 2. In the utility model, the heat conducting plates installed on both sides of the bottom of the reinforcement cover and the multiple sets of heat conducting strips connected to the lower ends of the heat conducting plates in the piston body can also conduct heat to the lower engine oil through the heat conducting plates and heat conducting strips at the bottom when the temperature on the reinforcement cover is high, so as to reduce the temperature of the reinforcement cover, thereby reducing its high-temperature expansion during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 Another perspective view of the present utility model;

[0017] Figure 3 It is an exploded view of the utility model;

[0018] Figure 4 This is another perspective of the explosion view of the utility model.

[0019] Reference numerals:

[0020] 100. Piston body;

[0021] 200, anti-expansion assembly; 201, mounting port; 202, reinforcement cover; 203, gas ring; 204, oil ring; 205, clamping block; 206, clamping slot; 207, fixing block; 208, mounting hole; 209, threaded hole; 210, screw;

[0022] 300, heat-conducting component; 301, heat-conducting sheet; 302, opening; 303, notch; 304, heat-conducting strip. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Embodiment 1:

[0025] like Figure 1-4 As shown, this embodiment provides a locomotive piston with a low expansion coefficient, including a piston body 100, an anti-expansion component 200 and a heat-conducting component 300, the anti-expansion component 200 includes a mounting port 201 arranged on the outer side of the upper part of the piston body 100, and a reinforcing cover 202 movably arranged in the mounting port 201, and an air ring 203 and an oil ring 204 are respectively arranged on the upper and lower ends of the outer side of the reinforcing cover 202, and blocks 205 are fixedly installed on both sides of the reinforcing cover 202, and both sides of the upper end of the piston body 100 are also A card slot 206 is provided, and the card slot 206 matches the card block 205. A fixing block 207 is fixedly provided on the outside of the card slot 206 in the piston body 100. The reinforcement cover 202 is made of high-silicon aluminum alloy. The anti-expansion component 200 also includes mounting holes 208 and threaded holes 209 corresponding to the card block 205 and the fixing block 207 on both sides. The anti-expansion component 200 also includes screws 210 that are movably installed in the mounting holes 208 and the threaded holes 209 at both ends of the piston body 100.

[0026] Specifically, the locomotive piston is an important component in the engine. The locomotive piston with a low expansion coefficient can also help reduce friction and wear inside the engine, improve the performance and service life of the engine. The reinforcement cover 202 sleeved on the upper part of the piston body 100 is made of an alloy material with a low expansion coefficient. When the piston body 100 is in use, the expansion of the air ring 203 and the oil ring 204 on the piston body 100 can be reduced, thereby avoiding the expansion of the air ring 203 and the oil ring 204 on the piston body 100. The problems such as wear and noise caused by the expansion of the air ring 203 and the oil ring 204 on the piston body 100, and the reinforcement cover 202 is locked by the engagement of the blocks 205 on both sides of the bottom and the screws 210, which can ensure the stability of the installation of the reinforcement cover 202 and avoid the problem of rotation during use. At the same time, the installation of the reinforcement cover 202 also has the advantage of convenient operation.

[0027] Embodiment 2:

[0028] Based on the first embodiment, Figure 3-4As shown, the heat-conducting component 300 includes heat-conducting plates 301 fixedly installed at both ends of the reinforcing cover 202, and openings 302 opened on both sides of the top of the piston body 100, and the openings 302 match the heat-conducting plates 301. The heat-conducting component 300 also includes notches 303 set on both sides of the bottom of the piston body 100, and multiple groups of heat-conducting strips 304 arranged and fixedly installed on the inner sides of the notches 303.

[0029] Specifically, the heat conducting plates 301 installed on both sides of the bottom of the reinforced cover 202 and the multiple sets of heat conducting strips 304 connected to the lower ends of the heat conducting plates 301 in the piston body 100 can also conduct heat to the engine oil at the bottom through the heat conducting plates 301 and the heat conducting strips 304 at the bottom when the temperature on the reinforced cover 202 is high, so as to reduce the overall temperature of the reinforced cover 202, thereby reducing its high-temperature expansion during use.

[0030] The working principle and use process of this utility model:

[0031] When the piston body 100 is in use, the reinforcement cover 202 sleeved on the upper outer end thereof can reduce the expansion of the upper part of the reinforcement cover 202 and the air ring 203 and the oil ring 204 during the movement of the piston body 100, thereby avoiding the problem of noise and wear during operation caused by the expansion of the piston body 100. At the same time, part of the heat generated by the reinforcement cover 202 during operation can also be transmitted to the multiple groups of heat-conducting strips 304 at the lower end through the heat-conducting plates 301 on both sides of the bottom, so that the piston body 100 is cooled by the splashing oil during operation, thereby dissipating the heat on the reinforcement cover 202, and the block 205 fixed at the bottom of the reinforcement cover 202 by screws 210 can also ensure the stability of the reinforcement cover 202 during use on the upper end of the piston body 100.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A locomotive piston with a low expansion coefficient, comprising a piston body (100), an anti-expansion component (200) and a heat-conducting component (300), characterized in that: The anti-expansion component (200) comprises a mounting opening (201) arranged on the outer side of the upper part of the piston body (100), and a reinforcement cover (202) movably arranged in the mounting opening (201); an air ring (203) and an oil ring (204) are respectively arranged at the upper and lower ends of the outer side of the reinforcement cover (202); a clamping block (205) is fixedly installed on both sides of the reinforcement cover (202); a clamping groove (206) is provided on both sides of the upper end of the piston body (100), and the clamping groove (206) matches the clamping block (205); and a fixing block (207) is fixedly arranged on the outer side of the clamping groove (206) in the piston body (100).

2. A locomotive piston with a low expansion coefficient according to claim 1, characterized in that: The reinforcement cover (202) is made of high-silicon aluminum alloy material.

3. A locomotive piston with a low expansion coefficient according to claim 1, characterized in that: The anti-expansion assembly (200) further comprises a mounting hole (208) and a threaded hole (209) respectively correspondingly opened on both sides of the clamping block (205) and the fixing block (207).

4. A locomotive piston with a low expansion coefficient according to claim 3, characterized in that: The anti-expansion assembly (200) further comprises screws (210) movably mounted in the mounting holes (208) at both ends of the piston body (100) and in the threaded holes (209).

5. A locomotive piston with a low expansion coefficient according to claim 1, characterized in that: The heat-conducting assembly (300) comprises heat-conducting plates (301) fixedly installed at both ends of the reinforcing cover (202), and openings (302) opened at both sides of the top of the piston body (100), and the openings (302) match the heat-conducting plates (301).

6. A locomotive piston with a low expansion coefficient according to claim 1, characterized in that: The heat-conducting assembly (300) further comprises notches (303) arranged on both sides of the bottom of the piston body (100), and a plurality of groups of heat-conducting strips (304) arranged and fixedly installed inside the notches (303).

Images