Piston oil supplementing structure

Abstract

The utility model relates to a piston oil supplementing structure, which belongs to the technical field of high-frequency air cylinders and comprises a piston body, the piston body is provided with an oil storage cavity used for storing lubricating grease, and the oil storage cavity is provided with an oil supplementing hole used for enabling the lubricating grease to flow out. Lubricating grease in the oil storage cavity can flow out to the contact face of the piston body and the cylinder body through the oil supplementing hole in the movement process of the piston body. In the working process of the piston, when lubricating grease between the cylinder body and the piston is consumed due to friction and the like, the oil storage cavity can serve as a supplementing source of the lubricating grease, the lubricating grease can flow out as needed through the oil supplementing hole, the contact face of the piston and the cylinder body is automatically lubricated, friction and abrasion are reduced, and the movement smoothness of the piston is improved. The service lives of the piston and the cylinder body are prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to high frequency air cylinder technical field, specifically say a kind of piston oiling structure of adaptation high frequency air cylinder and long life. BACKGROUND

[0002] In the field of mechanical engineering, piston-cylinder assembly is a key part in many power transmission and conversion systems, widely used in internal combustion engine, hydraulic system, pneumatic system and various mechanical equipment. The reciprocating motion of piston in cylinder realizes the conversion and transmission of energy, however, there are some problems to be solved in this process.

[0003] During reciprocating motion of piston, due to continuous friction between piston and cylinder wall, evaporation of lubricating oil under high temperature environment, contamination and dilution of lubricating oil by impurities, etc., part of the lubricating oil will be gradually consumed. The traditional piston structure often needs to rely on external lubrication system to reduce friction, however, this method has obvious shortcomings. On the one hand, the oil supply of external lubrication system is difficult to accurately match the actual lubrication demand of piston, which may cause insufficient lubrication or excessive lubrication. Excessive lubrication will cause waste of lubricating oil and increase cleaning cost; insufficient lubrication will not effectively reduce friction. On the other hand, the traditional piston structure also has certain limitations in sealing, such as aging and wear of sealing material after long time use, gap of sealing structure under high pressure or high frequency vibration environment, etc., which easily leads to leakage of working medium, reduces system pressure and efficiency, and even may cause equipment failure, affecting normal operation of equipment. SUMMARY

[0004] The utility model discloses a kind of piston oiling structures to solve the problems in the prior art, the device solves the problem that lubricating oil is easily consumed in reciprocating motion of piston.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The piston oiling structure of the utility model, including piston body, the piston body has oil storage cavity for storing grease, the oil storage cavity is equipped with oiling hole for making grease flow out, the grease in the oil storage cavity can flow out to the contact surface of piston body and cylinder through oiling hole during the movement of piston body.

[0007] With the above scheme, when the grease between cylinder and piston is consumed due to friction and other reasons during the operation of piston, the oil storage cavity can serve as a supplementary source of lubricating oil, and the oiling hole can make the lubricating oil flow out as needed, automatically lubricate the contact surface of piston and cylinder, reduce friction and wear, improve the smoothness of piston movement, and prolong the service life of piston and cylinder.

[0008] The piston body further comprises at least two ring grooves, and the oil supplementing hole is communicated with one ring groove and the oil storage cavity.

[0009] By the above scheme, the ring groove is used for installing other functional components, and the communication of the oil supplementing hole with any ring groove enables the lubricating grease flowing out of the oil storage cavity to enter the ring groove first and then be more evenly distributed on the contact surface of the piston and the cylinder, thereby improving the uniformity and stability of the lubrication effect.

[0010] The ring groove comprises a first ring groove, and a support ring for supporting the position of the piston body in the cylinder is installed in the first ring groove.

[0011] By the above scheme, the correct positioning of the piston in the cylinder is ensured by the support ring, the deviation or shaking of the piston during movement is prevented, the movement accuracy and stability of the piston in the cylinder are ensured, and problems such as abnormal wear and seizure caused by improper position of the piston are avoided, thereby ensuring the normal operation of the mechanical system.

[0012] The first ring groove is further provided with a second ring groove, and a sealing ring for realizing the sliding sealing connection between the piston body and the cylinder is installed in the second ring groove.

[0013] By the above scheme, the sealing and cleanliness of the internal environment of the cylinder are ensured during the reciprocating movement of the piston, the working pressure of the system is maintained stable, and the working efficiency and reliability of the entire device are improved.

[0014] The piston body is provided with a cover plate for protecting the lubricating grease in the oil storage cavity on the side where the oil storage cavity is opened.

[0015] By the above scheme, the cover plate can block foreign matters such as dust and impurities from entering the oil storage cavity, maintain the cleanliness of the lubricating grease, avoid the mixing of impurities into the lubricating grease to affect its lubricating performance, and also prevent the leakage of the lubricating grease to a certain extent, thereby ensuring the amount and quality of the lubricating grease in the oil storage cavity and providing protection for continuous and effective lubrication.

[0016] A connecting hole is formed in the center of the piston body.

[0017] By the above scheme, the connecting hole provides an interface for the connection of the piston and the connecting rod, so that external power can be accurately transmitted to the piston to drive the piston to reciprocate in the cylinder, thereby ensuring the continuity and normal operation of the entire mechanical transmission system.

[0018] By the above scheme, the following advantages are achieved:

[0019] 1. The piston oil supplementing structure comprises a piston body, the piston body is provided with an oil storage cavity for storing lubricating grease, the oil storage cavity is provided with an oil supplementing hole for discharging the lubricating grease, and the lubricating grease in the oil storage cavity can flow out to the contact surface of the piston body and the cylinder through the oil supplementing hole during the movement of the piston body. When the lubricating grease between the cylinder and the piston is consumed due to friction or other reasons during the operation of the piston, the oil storage cavity can serve as a supplementary source of the lubricating grease, the oil supplementing hole can discharge the lubricating grease as needed, automatically lubricate the contact surface of the piston and the cylinder, reduce friction and wear, improve the smoothness of the movement of the piston, and prolong the service life of the piston and the cylinder.

[0020] 2. The piston body further comprises at least two ring grooves, and the oil supplementing hole is communicated with one ring groove. The ring groove is used for mounting other functional components, and the communication of the oil supplementing hole with any ring groove enables the lubricating grease flowing out from the oil storage cavity to enter the ring groove first, and then be more evenly distributed to the contact surface of the piston and the cylinder, thereby improving the uniformity and stability of the lubricating effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the content of the utility model more easily understood clearly, the utility model will be described in further detail below according to the specific embodiments of the utility model and in combination with the drawings, wherein:

[0022] Figure 1 is a structural schematic view of the piston body of the first embodiment;

[0023] Figure 2 is Figure 1 a top view of

[0024] Figure 3 is a sectional view of the piston body of the first embodiment;

[0025] Figure 4 is a structural schematic view of the second embodiment.

[0026] Fig. 1 is a piston body; 101 is an oil storage cavity; 1011 is an oil supplementing hole; 102 is a first ring groove; 103 is a second ring groove; 104 is a connecting hole; 2 is a cover plate; 3 is a sealing ring; 4 is a supporting ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] For example, Figure 1 and2 As shown, the piston oil supplementing structure of the first embodiment includes a piston body 1, which has an oil storage cavity 101 for storing lubricating grease, and the oil storage cavity 101 is provided with an oil supplementing hole 1011 for discharging the lubricating grease, and the lubricating grease in the oil storage cavity 101 can flow out to the contact surface between the piston body 1 and the cylinder through the oil supplementing hole 1011 during the movement of the piston body 1. During the operation of the piston, when the lubricating grease between the cylinder and the piston is consumed due to friction or other reasons, the oil storage cavity 101 can serve as a supplementary source of lubricating grease, and the oil supplementing hole 1011 can discharge the lubricating grease as needed, automatically lubricating the contact surface between the piston and the cylinder, reducing friction and wear, improving the smoothness of the movement of the piston, and prolonging the service life of the piston and the cylinder.

[0029] In order to install other functional components such as a sealing ring 3 on the piston body 1, two ring grooves are provided on the piston body 1 in the embodiment, which are a first ring groove 102 and a second ring groove 103, and the oil supplementing hole 1011 communicates the first ring groove 102 with the oil storage cavity 101. The communication between the oil supplementing hole 1011 and the first ring groove 102 allows the lubricating grease flowing out from the oil storage cavity 101 to first enter the first ring groove 102, and then be more evenly distributed to the contact surface between the piston and the cylinder, improving the uniformity and stability of the lubricating effect.

[0030] Further, a support ring 4 for supporting the position of the piston body 1 in the cylinder is installed in the first ring groove 102. The support ring 4 ensures the correct positioning of the piston in the cylinder, prevents the piston from shifting or shaking during movement, ensures the movement accuracy and stability of the piston in the cylinder, and can avoid abnormal wear, jamming and other problems caused by improper position of the piston, ensuring the normal operation of the mechanical system.

[0031] The second ring groove 103 is arranged below the first ring groove 102, and the sealing ring 3 for realizing the sliding sealing connection between the piston body 1 and the cylinder is installed in the second ring groove 103. During the reciprocating movement of the piston, the sealing ring 3 can ensure the sealing and cleanliness of the internal environment of the cylinder, maintain the stability of the working pressure of the system, and improve the working efficiency and reliability of the entire device.

[0032] In order to ensure the continuity and normal operation of the entire mechanical transmission system, a connecting hole 104 is also provided in the center of the piston body 1, which provides an interface for the connection between the piston and the connecting rod, so that the external power can be accurately transmitted to the piston to drive the piston to reciprocate in the cylinder.

[0033] As Figure 3As shown, the support ring 4 is installed in the first ring groove 102 of the piston body 1, and the sealing ring 3 is installed in the second ring groove 103, the support ring 4 is used to provide support for the piston body 1 in the cylinder, and the sealing ring 3 is used to facilitate the sliding sealing connection between the outer wall of the piston body 1 and the cylinder, when a part of the lubricating oil on the inner wall of the cylinder is consumed, the grease stored in the oil storage cavity 101 will flow out through the oil supplement hole 1011, and will be supplemented to the inner wall of the cylinder under the action of the support ring 4 and the sealing ring 3.

[0034] During the operation of the piston body 1 of the embodiment, the piston body 1 is usually in the working state of moving up and down. Since the oil storage cavity 101 is located at the upper part of the piston body 1, under the action of gravity, the grease stored in the oil storage cavity 101 will flow out through the oil supplement hole 1011, and when a part of the lubricating oil on the cylinder wall is consumed during the movement of the piston, the grease flowing out of the oil supplement hole 1011 can be supplemented to the cylinder wall in time under the action of the support ring 4 and the sealing ring 3, thereby reducing the friction between the piston and the cylinder, the support ring 4 ensures the stable movement of the piston in the cylinder, prevents the piston from deviating during movement, and the sealing ring 3 ensures the sealing between the piston and the cylinder, prevents the working medium from leaking.

[0035] As shown in Figure 4 This is the piston oil supplement structure of the second embodiment, and the difference from the first embodiment is that the second embodiment adds a cover plate 2.

[0036] The cover plate 2 is installed on the side of the piston body 1 where the oil storage cavity 101 is opened, and plays a key protection role for the grease in the oil storage cavity 101. In the actual running environment, there are a lot of dust, impurities and other foreign matters in the outside world, if they enter the oil storage cavity 101, they will mix with the grease, thereby reducing the lubricating performance of the grease, and the cover plate 2 can effectively block these foreign matters, maintain the cleanliness of the grease, and at the same time, it can also prevent the grease from leaking to a certain extent, in this way, the amount of the grease in the oil storage cavity 101 is maintained stable, and the quality is also guaranteed, thereby creating good conditions for the continuous and effective lubrication between the piston and the cylinder, which helps to improve the performance and service life of the entire piston structure.

[0037] In the description of the utility model, need understanding is, the orientation or position relation indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or position relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the utility model. In the description of the utility model, unless otherwise specified and limited, it needs to be explained that the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be mechanical connection or electrical connection, it can be the communication of the internal two elements, it can be directly connected, or indirectly connected through an intermediate medium, and for ordinary skilled persons in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments, and for ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description, and it is not necessary and impossible to enumerate all the embodiments here, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A piston oil replenishing structure, characterized in that: The invention comprises a piston body (1), wherein the piston body (1) has an oil storage chamber (101) for storing lubricating grease, and the oil storage chamber (101) is provided with an oil replenishing hole (1011) for allowing the lubricating grease to flow out. The lubricating grease in the oil storage chamber (101) can flow out to the contact surface between the piston body (1) and the cylinder body through the oil replenishing hole (1011) during the movement of the piston body (1).

2. A piston oil replenishing structure according to claim 1, characterized in that: The piston body (1) further comprises at least two annular grooves, and the oil supply hole (1011) connects one of the annular grooves with the oil storage chamber (101).

3. The piston oil replenishing structure according to claim 2, characterized in that: The annular groove comprises a first annular groove (102), in which a support ring (4) for supporting the position of the piston body (1) in the cylinder is installed.

4. A piston oil replenishing structure according to claim 3, characterized in that: A second annular groove (103) is further provided below the first annular groove (102), and a sealing ring (3) for achieving a sliding sealing connection between the piston body (1) and the cylinder body is installed in the second annular groove (103).

5. The piston oil replenishing structure according to claim 1, characterized in that: The piston body (1) is provided with a cover plate (2) on the side where the oil storage cavity (101) is opened, for protecting the lubricating grease in the oil storage cavity (101).

6. The piston oil replenishing structure according to claim 1, characterized in that: A connecting hole (104) is provided at the center of the piston body (1).

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