A self-lubricating wear-resistant piston

Abstract

The utility model belongs to the technical field of pistons, and in particular relates to a self-lubricating and wear-resistant piston, comprising: a piston body, one end of which is provided with an accommodating cavity inwardly; an inner lining body, the inner lining body is arranged in the accommodating cavity and the end surface of the inner lining body on the same side as the accommodating cavity is provided with a piston cavity inwardly; a lubricating cavity, a lubricating cavity is formed between the bottom of the accommodating cavity and the inner lining body; wherein the piston body and the inner lining body are detachably connected.

Description

Technical Field

[0001] The utility model belongs to the technical field of pistons, and in particular relates to a self-lubricating and wear-resistant piston. Background Art

[0002] Under certain working conditions, the engine needs to keep the pressure of each cylinder balanced to improve the efficiency of the engine and avoid the increase of pumping work of certain cylinders corresponding to a certain crankshaft angle. By arranging a pressure balancing piston on the connecting pipe between the cylinders of the engine and driving it through the engine crankshaft, the pressure change of each cylinder of the engine can be better matched with the phase of the engine crankshaft to achieve pressure balance of each cylinder. However, the pressure balancing piston also needs lubrication, but the lubrication effect of traditional pistons is not good, which affects the overall service life. Utility Model Content

[0003] The utility model aims to provide a self-lubricating and wear-resistant automobile piston with a simple structure in view of the above-mentioned technical problems.

[0004] In view of this, the utility model provides a self-lubricating and wear-resistant piston, comprising:

[0005] A piston body, one end of which is inwardly formed with a receiving cavity;

[0006] An inner lining body, the inner lining body is arranged in the accommodating cavity and an end surface of the inner lining body on the same side as the accommodating cavity is formed with a piston cavity inwardly;

[0007] A lubrication cavity is formed between the bottom of the accommodating cavity and the lining body;

[0008] The piston body and the lining body are detachably connected.

[0009] In the above technical solution, further, it also includes:

[0010] A recessed groove portion, which is arranged on one end surface of the piston body with the accommodating cavity and is coaxially arranged with the accommodating cavity;

[0011] An end support plate is integrally formed on one side of the lining body and cooperates with the sink portion;

[0012] The cross section of the sinking groove part is circular, and the end support plate is fixed with bolts to the sinking groove part.

[0013] In the above technical solution, further, it also includes:

[0014] Internal receiving grooves, a plurality of internal receiving grooves are evenly distributed on the inner wall of the accommodating cavity according to the circumference, and extend inward from the bottom of the sinking groove part;

[0015] The inner receiving groove is communicated with the lubrication cavity.

[0016] In the above technical solution, further, the inner wall of the accommodating cavity is a regular polygon, and the lining body is adapted to the accommodating cavity.

[0017] In the above technical solution, further, it also includes:

[0018] Lubrication holes: a plurality of lubrication holes evenly distributed and penetrating the inner lining body are provided in the piston cavity;

[0019] A lubrication assembly, wherein each lubrication hole is provided with a lubrication assembly;

[0020] The lubrication hole is communicated with the inner receiving groove.

[0021] In the above technical solution, further, the lubrication component includes:

[0022] A hole plug, the end of which is spherical;

[0023] A connecting column, the connecting column is integrally formed on one side of the hole plug, and the diameter of the connecting column is smaller than the ball diameter of the hole plug;

[0024] A limiting disk is integrally formed on a side of the connecting column away from the hole plug, and the diameter of the limiting disk is larger than the diameter of the connecting column and smaller than the ball diameter of the hole plug;

[0025] A buffer column, which is integrally formed on a side of the limiting plate away from the connecting column, and has a cross-sectional diameter smaller than that of the limiting plate;

[0026] The limit block is threadedly connected to a side of the buffer column away from the limit plate.

[0027] In the above technical solution, further, the lubrication hole includes:

[0028] The outer ball hole is spherical on one side of the outer ball hole near the piston cavity, and the end of the spherical surface is in contact with the piston cavity, and the other side of the outer ball hole is cylindrical, and the spherical position of the outer ball hole is in contact with the plugging plug and the plugging plug is extended out of the lubrication hole;

[0029] A receiving hole, the receiving hole forms the inner side of the outer ball hole and the limiting plate is slidably matched with the receiving hole;

[0030] A floating hole is formed on the inner side of the receiving hole and the buffer column is slidably matched with the floating hole.

[0031] In the above technical solution, further, the lubrication component also includes:

[0032] The floating spring is sleeved on the buffer column and its two ends are respectively against the receiving hole and the end surface of the limiting plate.

[0033] In the technical solution, the setting of the floating spring enables the lubrication component to be elastically arranged on the lubrication hole, so that the lubricating oil can flow out of the lubrication hole after the hole plug of the lubrication component is squeezed into the outer ball hole.

[0034] In the above technical solution, further, the lubrication component also includes:

[0035] Oil holes, a plurality of oil holes penetrate from the end surface of the buffer column and extend from the side wall of the hole plug;

[0036] A plurality of receiving flow channels are formed on the outer wall of the hole plug and connected with the oil holes.

[0037] The beneficial effects of the utility model are:

[0038] 1. The lubrication chamber is used to store a certain amount of lubricating oil, and the wear of the piston chamber is reduced by compensating the piston chamber with lubricating oil;

[0039] 2. The liner and the piston body can be detachably fixed to reduce the subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the utility model;

[0041] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0042] Figure 3 yes Figure 2 A partial enlarged view of point Ⅰ in the middle;

[0043] Figure 4 It is a structural schematic diagram of the inner lining body in the utility model;

[0044] Figure 5 It is a structural schematic diagram of the piston body in the utility model;

[0045] Figure 6 It is a partial structural schematic diagram of the lubrication component in the present invention;

[0046] The markings in the figure are: 1-piston body, 2-inner lining, 3-piston chamber, 4-lubrication chamber, 5-sink portion, 6-end support plate, 7-inner receiving groove, 8-lubrication hole, 8a-outer ball hole, 8b-receiving hole, 8c-floating hole, 8d-inner limit hole, 9-lubrication assembly, 9a-hole plug, 9b-connecting column, 9c-limiting plate, 9d-buffer column, 9e-limiting block, 9f-floating spring, 9g-oil hole, 9h-receiving flow channel. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0048] Embodiment 1:

[0049] This embodiment provides a self-lubricating and wear-resistant piston, comprising:

[0050] A piston body 1, wherein an accommodation cavity is formed inwardly at one end of the piston body 1;

[0051] The lining body 2 is arranged in the accommodating cavity and a piston cavity 3 is formed inwardly on the end surface of the lining body 2 on the same side as the accommodating cavity;

[0052] A lubrication cavity 4 is formed between the bottom of the accommodating cavity and the lining body 2;

[0053] The piston body 1 and the lining body 2 are detachably connected.

[0054] In the present technical solution, the lubrication chamber 4 is configured to store a certain amount of lubricating oil, and the stored lubricating oil is used to compensate the piston chamber 3 of the lining body 2, thereby reducing the wear of the piston chamber 3; at the same time, the lining body 2 and the piston body 1 are detachably fixed, so that when the piston body 1 or the lining body 2 is damaged, only the damaged parts need to be replaced, thereby reducing the subsequent maintenance costs.

[0055] Embodiment 2:

[0056] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0057] Also includes:

[0058] The recessed groove 5 is arranged on one end surface of the piston body 1 with the accommodating cavity and is coaxially arranged with the accommodating cavity;

[0059] The end support plate 6 is integrally formed on one side of the lining body 2, and the end support plate 6 cooperates with the sink portion 5;

[0060] The groove portion 5 has a circular cross section, and the end support plate 6 is fixed to the groove portion 5 with bolts.

[0061] In the present technical solution, the setting of the sinking groove portion 5 can facilitate the cooperation with the end support plate 6, thereby ensuring that the end surface of the end support plate 6 is flush with the piston body 1, and at the same time can facilitate the connection between the lining body 2 and the piston body 1.

[0062] Embodiment 3:

[0063] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] Also includes:

[0065] Internal receiving grooves 7, a plurality of internal receiving grooves 7 are evenly distributed on the inner wall of the accommodating cavity according to the circumference, and extend inward from the bottom of the sinking groove portion 5;

[0066] The inner receiving groove 7 is communicated with the lubrication cavity 4 .

[0067] In the present technical solution, the provision of the receiving groove enables the lubricant in the lubrication cavity 4 to flow to the outside of the inner wall of the piston cavity 3 in a better manner, thereby facilitating subsequent lubrication.

[0068] Embodiment 4:

[0069] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] The inner wall of the accommodating cavity is a regular polygon, and the lining body 2 is adapted to the accommodating cavity.

[0071] In the present technical solution, the regular polygonal accommodating cavity makes the diameter connection between the inner body and the piston body 1 more stable and can prevent the inner lining body 2 from slipping and rotating, thereby ensuring the stability of the overall use of the piston.

[0072] Embodiment 5:

[0073] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0074] Also includes:

[0075] Lubrication holes 8: A plurality of lubrication holes 8 evenly distributed and penetrating the lining body 2 are provided in the piston cavity 3;

[0076] A lubrication component 9, each lubrication hole 8 is provided with a lubrication component 9;

[0077] The lubrication hole 8 is communicated with the inner receiving groove 7 .

[0078] In the present technical solution, the setting of the lubrication hole 8 enables the lubricant in the lubrication chamber 4 to pass through the receiving groove and then into the piston chamber 3 through the lubrication hole 8, thereby ensuring good lubrication in the lubrication chamber 4. The setting of the lubrication component 9 prevents the lubrication hole 8 from being always conductive, thereby causing an excessive amount of lubricating oil in the lubrication chamber 4 and affecting the service life of the lubricating oil in the lubrication chamber 4.

[0079] Embodiment 6:

[0080] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0081] The lubrication assembly 9 comprises:

[0082] The hole plug 9a, the end of the hole plug 9a is spherical;

[0083] A connecting column 9b, the connecting column 9b is integrally formed on one side of the hole plug 9a, and the diameter of the connecting column 9b is smaller than the ball diameter of the hole plug 9a;

[0084] The limiting plate 9c is integrally formed on a side of the connecting column 9b away from the hole plug 9a, and the diameter of the limiting plate 9c is larger than the diameter of the connecting column 9b and smaller than the ball diameter of the hole plug 9a;

[0085] A buffer column 9d, which is integrally formed on a side of the limiting plate 9c away from the connecting column 9b, and a cross-sectional diameter of the buffer column 9d is smaller than that of the limiting plate 9c;

[0086] The limiting block 9e is threadedly connected to a side of the buffer column 9d away from the limiting plate 9c.

[0087] In the present technical solution, the hole plug 9a can seal the lubrication hole 8, and the connecting column 9b is used to connect the limit plate 9c, and the cooperation between the column and the limit block 9e can prevent the lubrication assembly 9 from being separated from the lubrication hole 8.

[0088] Embodiment 7:

[0089] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0090] The lubrication hole 8 comprises:

[0091] The outer ball hole 8a is spherical on one side of the outer ball hole 8a close to the piston cavity 3, and the end of the spherical surface is in contact with the piston cavity 3, and the other side of the outer ball hole 8a is cylindrical, and the spherical position of the outer ball hole 8a is in contact with the plug 9a and the plug 9a is partially extended out of the lubrication hole 8;

[0092] A receiving hole 8b, the receiving hole 8b forms the inner side of the outer ball hole 8a and the limiting plate 9c is slidably matched with the receiving hole 8b;

[0093] A floating hole 8c, which is formed inside the receiving hole 8b and the buffer column 9d is slidably matched with the floating hole 8c;

[0094] The inner limit hole 8d is formed inside the floating hole 8c, and the limit block 9e abuts against the end surface of the inner limit hole 8d. The diameter of the outer ball hole 8a is larger than the receiving hole 8b, the diameter of the receiving hole 8b is larger than the floating hole 8c, and the diameter of the inner limit hole 8d is smaller than the floating hole 8c.

[0095] In the present technical solution, the setting of the outer ball hole 8a can facilitate the plug 9a to block the outlet of the lubrication hole 8, and the setting of the receiving hole 8b can accommodate the limit plate 9c. The cooperation between the floating hole 8c and the buffer column 9d allows the lubrication component 9 to slide on the lubrication hole 8 to a certain extent; and the cooperation between the inner limit hole 8d and the limit block 9e can limit the lubrication component 9 from detaching from the lubrication hole 8.

[0096] Embodiment 8:

[0097] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0098] The lubrication assembly 9 also includes:

[0099] The floating spring 9f is sleeved on the buffer column 9d and its two ends are respectively against the end surface of the receiving hole 8b and the limit plate 9c.

[0100] In the present technical solution, the setting of the floating spring 9f enables the lubrication component 9 to be elastically arranged on the lubrication hole 8, so that the lubrication oil can flow out of the lubrication hole 8 after the hole plug 9a of the lubrication component 9 is squeezed into the outer ball hole 8a.

[0101] Embodiment 9:

[0102] This embodiment provides a self-lubricating and wear-resistant piston, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0103] The lubrication assembly 9 also includes:

[0104] Oil holes 9g, a plurality of oil holes 9g penetrate from the end surface of the buffer column 9d and extend from the side wall of the plug 9a;

[0105] A plurality of receiving flow channels 9h are formed on the outer wall of the hole plug 9a and connected to the oil passage hole 9g.

[0106] In the present technical solution, the setting of the oil hole 9g can facilitate the lubricating liquid in the inner receiving groove 7 to flow out of the lubricating hole 8 through the lubricating component 9; and the receiving flow channel 9h is normally offset against the spherical position through the outer ball hole 8a, and the lubricating liquid does not flow out of the lubricating hole 8 at this time. When the lubricating component 9 is squeezed, the initial hole plug 9a moves inwardly of the outer ball hole 8a, so that a gap is generated between the hole plug 9a and the spherical position of the outer ball hole 8a, and the lubricating oil flows out of the lubricating hole 8 after passing through the lubricating hole 8 and the receiving flow channel 9h, thereby ensuring the durability of the lubricating oil stored in the lubricating cavity 4, thereby achieving the effect of piston self-lubrication.

[0107] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A self-lubricating wear-resistant piston, characterized in that: include: A piston body (1), wherein one end of the piston body (1) is formed with an accommodation cavity inwardly; An inner lining body (2), wherein the inner lining body (2) is arranged in the accommodating cavity and a piston cavity (3) is formed inwardly on the end surface of the inner lining body (2) on the same side as the accommodating cavity; A lubrication cavity (4), wherein a lubrication cavity (4) is formed between the bottom of the accommodating cavity and the lining body (2); The piston body (1) and the lining body (2) are detachably connected.

2. A self-lubricating and wear-resistant piston according to claim 1, characterized in that: Also includes: A recessed groove (5), the recessed groove (5) being arranged on a side end surface of the piston body (1) with the accommodating cavity and being coaxially arranged with the accommodating cavity; An end support plate (6), wherein the end support plate (6) is integrally formed on one side of the lining body (2), and the end support plate (6) cooperates with the sink portion (5); The sinking groove portion (5) has a circular cross section, and the end support plate (6) is fixed to the sinking groove portion (5) by bolts.

3. A self-lubricating and wear-resistant piston according to claim 2, characterized in that: Also includes: Inner receiving grooves (7), wherein a plurality of the inner receiving grooves (7) are evenly distributed on the inner wall of the accommodating cavity along a circumference and extend inwardly from the bottom of the sink portion (5); The inner receiving groove (7) is communicated with the lubrication cavity (4).

4. A self-lubricating and wear-resistant piston according to claim 3, characterized in that: The inner wall of the accommodating cavity is in the shape of a regular polygon, and the lining body (2) is adapted to the accommodating cavity.

5. The self-lubricating and wear-resistant piston according to claim 1, characterized in that: Also includes: Lubrication holes (8), a plurality of lubrication holes (8) evenly distributed and penetrating the lining body (2) are provided in the piston chamber (3); A lubrication component (9), wherein each of the lubrication holes (8) is provided with a lubrication component (9); The lubrication hole (8) is communicated with the inner receiving groove (7).

6. A self-lubricating and wear-resistant piston according to claim 5, characterized in that: The lubrication assembly (9) comprises: A hole plug (9a), wherein the end of the hole plug (9a) is spherical; A connecting column (9b), wherein the connecting column (9b) is integrally formed on one side of the hole plug (9a), and the diameter of the connecting column (9b) is smaller than the ball diameter of the hole plug (9a); A limiting plate (9c), wherein the limiting plate (9c) is integrally formed on a side of the connecting column (9b) away from the hole plug (9a), and the diameter of the limiting plate (9c) is larger than the diameter of the connecting column (9b) and smaller than the ball diameter of the hole plug (9a); A buffer column (9d), wherein the buffer column (9d) is integrally formed on a side of the limiting plate (9c) away from the connecting column (9b), and the cross-sectional diameter of the buffer column (9d) is smaller than that of the limiting plate (9c); A limiting block (9e), wherein the limiting block (9e) is threadedly connected to a side of the buffer column (9d) away from the limiting plate (9c).

7. A self-lubricating and wear-resistant piston according to claim 6, characterized in that: The lubrication hole (8) comprises: An outer ball hole (8a), the outer wall of which is spherical and can be attached to the hole plug (9a) and allow a portion of the hole plug (9a) to extend out of the lubrication hole (8); A receiving hole (8b), wherein the receiving hole (8b) is formed on the inner side of the outer ball hole (8a) and the limiting plate (9c) is slidably matched with the receiving hole (8b); A floating hole (8c), wherein the floating hole (8c) is formed on the inner side of the receiving hole (8b) and the buffer column (9d) is slidably matched with the floating hole (8c); An inner limit hole (8d), wherein the inner limit hole (8d) is formed on the inner side of the floating hole (8c), and the limit block (9e) abuts against the end surface of the inner limit hole (8d).

8. The self-lubricating and wear-resistant piston according to claim 7, characterized in that: The lubrication assembly (9) further comprises: A floating spring (9f) is sleeved on the buffer column (9d) and its two ends are respectively against the end surface of the receiving hole (8b) and the limit plate (9c).

9. A self-lubricating and wear-resistant piston according to claim 8, characterized in that: The lubrication assembly (9) further comprises: Oil holes (9g), a plurality of the oil holes (9g) penetrate from the end surface of the buffer column (9d) and extend from the side wall of the hole plug (9a); A receiving flow channel (9h), wherein a plurality of the receiving flow channels (9h) are formed on the outer wall of the hole plug (9a) and connected to the oil hole (9g).

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