Piston cylinder sleeve

Abstract

The utility model belongs to the technical field of sleeves, and particularly relates to a piston cylinder sleeve which comprises a sleeve, a plurality of shallow holes and a plurality of deep holes are formed in one end of the sleeve, the plurality of shallow holes and the plurality of deep holes are distributed around the axis of the sleeve at equal intervals, and the shallow holes and the deep holes are distributed in a staggered mode. Oil passing groove sets distributed at equal intervals in the length direction of the sleeve are formed in the outer wall of the sleeve, and grooves used for storing oil are formed in the inner wall of the sleeve. The piston head slides in the sleeve, lubricating oil for lubrication is smeared on the inner wall of the sleeve, and the oil storage groove formed in the inner wall of the sleeve can store the lubricating oil, so that the situation that the lubricating oil on the inner wall of the sleeve is scraped and the lubricating effect is affected due to the fact that the lubricating oil is concentrated at the end of the piston head when the piston head moves up and down is avoided; part of the oil storage grooves can be communicated with the outside of the sleeve, so that external lubricating oil can be conveniently injected into the end part and the middle part of the inner wall of the sleeve, and the lubricating effect is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of sleeve technology, specifically relating to a piston cylinder liner. Background Technology

[0002] The inner surface of the piston cylinder liner is directly subjected to high-temperature and high-pressure combustion gases and is constantly subjected to high-speed sliding friction with the piston rings and piston skirt. Therefore, lubricating oil is required for lubrication during use.

[0003] The piston cylinder liner commonly used is a straight cylindrical structure with a smooth inner wall. When in use, lubricating oil is applied to the inner wall of the piston cylinder. Under the action of the piston head, the lubricating oil on the inner wall of the piston cylinder is easily scraped off to the end of the piston head, which leads to a reduction in lubrication effect and causes the piston cylinder liner temperature to rise. Utility Model Content

[0004] The purpose of this invention is to provide a piston cylinder liner that can prevent the lubricating oil on the inner wall of the liner from being scraped off, thus affecting the lubrication effect and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a piston cylinder liner, comprising a sleeve, one end of which is provided with a shallow hole and a deep hole, and there are a plurality of shallow holes and deep holes, which are equidistantly distributed around the axis of the sleeve, and the shallow holes and deep holes are staggered, the outer wall of the sleeve is provided with a group of oil passage grooves equidistantly distributed along the length direction of the sleeve, and the inner wall of the sleeve is provided with a groove for storing oil.

[0006] Furthermore, the oil passage group includes planar grooves evenly distributed around the sleeve axis, and a waist-shaped hole is provided on one side of the planar groove.

[0007] Furthermore, the outer wall of the sleeve is provided with two annular grooves distributed along the length of the sleeve. One of the annular grooves has two correspondingly distributed fine holes on its side wall, and the other annular groove has large holes equidistantly distributed around the axis of the sleeve on its side wall.

[0008] Furthermore, the annular groove includes a first oil ring groove, a second oil ring groove, an oil passage ring groove, and an oil storage ring groove disposed on the inner wall of the sleeve.

[0009] Furthermore, there are several first oil ring grooves, and each of the first oil ring grooves is connected to the waist-shaped hole of the several oil passage groups, and the sidewall of the first oil ring groove is connected to the deep hole.

[0010] Furthermore, the sidewall of the second oil ring groove is connected to the shallow hole.

[0011] Furthermore, there are two oil passage grooves, and the two oil passage grooves are respectively connected to the two fine holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the piston head slides inside the sleeve, and the lubricating oil used for lubrication is applied to the inner wall of the sleeve. The oil storage groove provided on the inner wall of the sleeve can store the lubricating oil, which avoids the lubricating oil from concentrating at the end of the piston head when the piston head moves up and down, causing the lubricating oil on the inner wall of the sleeve to be scraped off, thus affecting the lubrication effect. Part of the oil storage groove can be connected to the outside of the sleeve, thereby facilitating the injection of external lubricating oil into the end and middle of the inner wall of the sleeve, further improving the lubrication effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the present invention.

[0015] The attached diagram lists the components represented by each number as follows:

[0016] 1. Sleeve; 2. Shallow hole; 3. Deep hole; 4. Oil passage groove group; 41. Planar groove; 42. Waist-shaped hole; 5. Annular groove; 51. Narrow hole; 52. Large hole; 6. First oil ring groove; 7. Second oil ring groove; 8. Oil passage ring groove; 9. Oil storage ring groove. Detailed Implementation

[0017] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0018] like Figure 1 and 2 As shown, a piston cylinder liner includes a sleeve 1. One end of the sleeve 1 is provided with a shallow hole 2 and a deep hole 3. There are several shallow holes 2 and several deep holes 3. The shallow holes 2 and deep holes 3 are equidistantly distributed around the axis of the sleeve 1. The shallow holes 2 and deep holes 3 are staggered. The outer wall of the sleeve 1 is provided with an oil passage groove group 4 equidistantly distributed along the length direction of the sleeve 1. The inner wall of the sleeve 1 is provided with a groove for storing oil.

[0019] According to the above structure, during use, the piston head slides inside the sleeve 1, and the lubricating oil is applied to the inner wall of the sleeve 1. The annular groove provided on the inner wall of the sleeve 1 can store the lubricating oil, so as to prevent the lubricating oil from concentrating at the end of the piston head when the piston head moves up and down, which would cause the lubricating oil on the inner wall of the sleeve 1 to be scraped off and affect the lubrication effect.

[0020] like Figure 2As shown, the annular groove includes a first oil ring groove 6, a second oil ring groove 7, an oil passage ring groove 8, and an oil storage ring groove 9 disposed on the inner wall of the sleeve 1.

[0021] According to the above structure, the first oil ring groove 6, the second oil ring groove 7, the oil passage ring groove 8 and the oil storage ring groove 9 are used to store lubricating oil, so that the inner wall of the sleeve 1 can be uniformly adhered with lubricating oil when the piston head moves.

[0022] like Figure 1 and 2 As shown, the oil passage group 4 includes planar grooves 41 evenly distributed around the axis of the sleeve 1. A waist-shaped hole 42 is provided on one side of the planar groove 41. There are several first oil ring grooves 6, which are respectively connected to the waist-shaped holes 42 of the oil passage group 4. The sidewall of the first oil ring groove 6 is connected to the deep hole 3. There are two oil passage ring grooves 8, which are respectively connected to two fine holes 51.

[0023] According to the above structure, the waist-shaped hole 42 can connect the first oil ring groove 6 and the outside of the sleeve 1, so that the lubricating oil outside the sleeve 1 can enter the inside of the sleeve 1 and the top of the inner wall of the sleeve 1 can be filled with lubricating oil. Similarly, the fine hole 51 can connect the oil ring groove 8 with the outside of the sleeve 1, so that the middle part of the inner wall of the sleeve 1 can adhere to the lubricating oil.

[0024] like Figure 1 and 2 As shown, the outer wall of the sleeve 1 is provided with two annular grooves 5 distributed along the length of the sleeve 1. One annular groove 5 has two correspondingly distributed fine holes 51 on its side wall, and the other annular groove 5 has large holes 52 equidistantly distributed around the axis of the sleeve 1 on its side wall.

[0025] According to the above structure, the large hole 52 allows the lubricating oil outside the sleeve 1 to enter the bottom of the inner wall of the sleeve 1, thereby improving the lubrication effect at the bottom of the inner wall of the sleeve 1.

[0026] like Figure 1 and 2 As shown, the sidewall of the second oil ring groove 7 is connected to the shallow hole 2.

[0027] According to the above structure, the lubricating oil injected through the shallow hole 2 can flow into the interior of the second oil ring groove 7, and then be coated on the inner wall of the sleeve 1 along with the piston head, further improving the lubrication effect.

[0028] The working principle of this utility model is as follows: During use, the piston head slides inside the sleeve 1. Lubricating oil is applied to the inner wall of the sleeve 1. The annular groove on the inner wall of the sleeve 1 stores the lubricating oil, preventing it from concentrating at the end of the piston head when it moves up and down, thus avoiding scraping off the lubricating oil from the inner wall of the sleeve 1 and affecting the lubrication effect. The first oil ring groove 6, the second oil ring groove 7, the oil passage groove 8, and the oil storage ring groove 9 are used to store lubricating oil. When the piston head moves, the lubricating oil can be evenly adhered to the inner wall of the sleeve 1. The oblong hole 42 allows the first oil ring groove 6 and the sleeve to... The external connection of sleeve 1 facilitates the entry of lubricating oil from the outside of sleeve 1 into the inside of sleeve 1, and facilitates the filling of lubricating oil on the top of the inner wall of sleeve 1. Similarly, the setting of the fine hole 51 allows the oil ring groove 8 to be connected to the outside of sleeve 1, so that lubricating oil can adhere to the middle of the inner wall of sleeve 1. The setting of the large hole 52 allows lubricating oil from the outside of sleeve 1 to enter the bottom of the inner wall of sleeve 1, thereby improving the lubrication effect at the bottom of the inner wall of sleeve 1. The lubricating oil injected through the shallow hole 2 can flow into the inside of the second oil ring groove 7, and then be coated on the inner wall of sleeve 1 with the piston head, further improving the lubrication effect.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A piston cylinder liner, comprising a sleeve (1), characterized in that: One end of the sleeve (1) is provided with a shallow hole (2) and a deep hole (3). There are several shallow holes (2) and several deep holes (3). The shallow holes (2) and deep holes (3) are equidistantly distributed around the axis of the sleeve (1). The shallow holes (2) and deep holes (3) are staggered. The outer wall of the sleeve (1) is provided with an oil passage groove group (4) equidistantly distributed along the length direction of the sleeve (1). The inner wall of the sleeve (1) is provided with a groove for storing oil.

2. A piston cylinder liner according to claim 1, characterized in that: The oil passage group (4) includes planar grooves (41) evenly distributed around the axis of the sleeve (1), and a waist-shaped hole (42) is provided on one side of the planar groove (41).

3. A piston cylinder liner according to claim 2, characterized in that: The outer wall of the sleeve (1) is provided with two annular grooves (5) distributed along the length direction of the sleeve (1). One of the annular grooves (5) has two correspondingly distributed fine holes (51) on its side wall, and the other annular groove (5) has large holes (52) distributed equidistantly around the axis of the sleeve (1) on its side wall.

4. A piston cylinder liner according to claim 3, characterized in that: The annular groove includes a first oil ring groove (6), a second oil ring groove (7), an oil passage ring groove (8), and an oil storage ring groove (9) disposed on the inner wall of the sleeve (1).

5. A piston cylinder liner according to claim 4, characterized in that: There are several first oil ring grooves (6), and several first oil ring grooves (6) are respectively connected to the waist-shaped holes (42) of several oil passage groups (4), and the sidewall of the first oil ring groove (6) is connected to the deep hole (3).

6. A piston cylinder liner according to claim 5, characterized in that: The sidewall of the second oil ring groove (7) is connected to the shallow hole (2).

7. A piston cylinder liner according to claim 6, characterized in that: There are two oil passage grooves (8), and the two oil passage grooves (8) are respectively connected to the two fine holes (51).

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