Aluminum alloy internal combustion locomotive piston

Abstract

The utility model relates to the technical field of diesel locomotive accessories, and discloses an aluminum alloy diesel locomotive piston which comprises a piston body, two pin holes are formed in the piston body, bearings are fixedly connected to the interiors of the two pin holes, piston pin shafts are fixedly connected to the interiors of the bearings in an inserted mode, through holes are formed in the axes of the piston pin shafts, and through holes are formed in the through holes. Through the mechanism design of the spacer blocks and the bearing, when the piston body works, lubricating oil which is continuously smeared is conveyed to the bearing through a one-way oil way formed by the multiple spacer blocks, and the work of cooling the rotating high temperature when the piston body works is achieved through conveying of the lubricating oil; and through the arrangement of a plurality of partition blocks, the problem that the bearing force corresponding to the through holes formed in the piston pin shaft is reduced can be solved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of internal combustion locomotive accessories, in particular to an aluminum alloy internal combustion locomotive piston. Background Art

[0002] A diesel locomotive is a train powered by a diesel engine. They use a diesel engine to drive the train forward, rather than steam like a steam locomotive. Diesel locomotives began to appear in the early 20th century and gradually replaced steam locomotives. They are generally more efficient, easier to maintain, and more flexible in operation, suitable for a variety of different railway transportation tasks. As one of the most important parts in a diesel locomotive engine, the piston plays a vital role.

[0003] When installing the piston pin of the existing piston, a pin ring is generally installed in the pin hole to facilitate the rotation and position limiting of the piston pin. However, although the pin ring can limit the position of the piston pin when it rotates, the long-term reciprocating rotation will cause friction and heat between the pin ring and the piston pin. The operating environment of the piston itself is high temperature. Excessively high temperature will greatly reduce the life of the piston pin and the pin ring, that is, reduce the service life of the entire piston.

[0004] Therefore, it is necessary to design an aluminum alloy internal combustion locomotive piston to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an aluminum alloy internal combustion locomotive piston, which is used to solve the technical problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aluminum alloy internal combustion locomotive piston, comprising a piston body, wherein two pin holes are provided on the piston body, bearings are fixedly connected inside the two pin holes, a piston pin is fixedly inserted inside the bearing, a through hole is provided on the axis of the piston pin, a first sealing block and a piston body are respectively fixedly connected on both sides of the through hole, a plurality of spacers are fixedly connected between the first sealing block and the second sealing block and are cross-distributed up and down, an oil delivery hole is provided on the lower outer surface of one side of the second sealing block, an oil inlet hole is provided on the upper outer surface of one side of the first sealing block, a pin connecting block is fixedly connected to the bottom of the piston pin, two gas ring grooves and one oil ring groove are provided on the surface of the piston body above the pin holes, and a plurality of oil grooves connected to the bearings are provided directly above the two pin holes of the oil ring groove and between the oil ring grooves.

[0007] Preferably, one side of the outer surface of the spacer is in contact with the inner wall of the through hole, and the other side of the outer surface of the spacer is provided with a pointed end.

[0008] Preferably, two symmetrical hollow grooves are formed on the outer surface of the piston body, and a plurality of reinforcing rib blocks distributed at equal intervals are fixedly connected inside the two hollow grooves.

[0009] Preferably, the oil inlet hole and the oil delivery hole are respectively arranged on adjacent sides of the two bearings.

[0010] Preferably, both ends of the plurality of oil grooves are respectively connected to the oil ring groove and the corresponding bearings.

[0011] Preferably, the outer surface of the piston body is provided with a ceramic coating, and the top of the piston body is provided with a groove.

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

[0013] The utility model adopts the design of the spacer and the bearing mechanism, so that when the piston body is working, the lubricating oil that is continuously applied is delivered to the bearing through the one-way oil path formed by the multiple spacers, and the delivery of the lubricating oil is utilized to realize the cooling work of the high temperature of the rotation of the piston body when working, and the provision of the multiple oil grooves can also further improve the heat dissipation effect of the piston body during rotation, and the provision of the multiple spacers can also support the problem of reduced bearing capacity corresponding to the opening of the through hole in the piston pin shaft to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the empty slot structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the exploded structure of the piston body of the utility model;

[0017] Figure 4 This is a schematic diagram of the hollow slot structure of the utility model;

[0018] In the figure: 1. Piston body; 2. Bearing; 3. Piston pin; 4. Pin connecting block; 6. Gas ring groove; 7. Oil ring groove; 8. Oil through groove; 9. First sealing block; 10. Spacer block; 11. Second sealing block; 12. Empty groove; 13. Reinforcement rib block; 14. Oil inlet hole; 15. Oil delivery hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Obviously, many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] See also Figure 1-4 The utility model provides an aluminum alloy internal combustion locomotive piston, comprising a piston body 1, wherein the piston body 1 is provided with two pin holes, the insides of the two pin holes are fixedly connected with bearings 2, the insides of the bearings 2 are fixedly inserted with a piston pin shaft 3, the axis of the piston pin shaft 3 is provided with a through hole, the two sides of the through hole are respectively fixedly connected with a first sealing block 9 and the piston body 1, a plurality of spacers 10 are fixedly connected between the first sealing block 9 and the second sealing block 11, and the bearing 2 is provided with an oil delivery hole 15 on the lower outer surface of one side of the second sealing block 11, and the bearing 2 is provided with an oil inlet hole 14 on the upper outer surface of one side of the first sealing block 9, and a pin shaft connecting block 4 is fixedly connected to the bottom of the piston pin shaft 3, and the piston body 1 is provided with two gas ring grooves 6 and an oil ring groove 7 on the surface above the pin holes, and the oil ring grooves 7 are directly above and A plurality of oil grooves 8 connected with the bearing 2 are provided between the oil ring grooves 7. When the piston body 1 is in operation, the gas ring and the oil ring are installed respectively through the gas ring groove 6 and the oil ring groove 7. When the piston body 1 is in operation, the piston pin 3 is driven to rotate inside the bearing 2 through the pin connecting block 4. The bearing 2 can reduce the friction caused by the rotation. At the same time, due to the through hole provided at the axis of the bearing 2, the lubricating oil scraped by the piston body 1 during the reciprocating sliding can pass through the oil inlet hole 14. Under the setting of the plurality of spacers 10, a one-way oil path is formed, and part of the lubricating oil can be delivered to the bearing 2 through the oil delivery hole 15. The lubricating oil is used to cool the friction. Similarly, the bearing 2 is cooled by the lubricating oil through the plurality of oil grooves 8. Through the cooperation of the plurality of cooling components, the service life of the piston body 1 can be improved when it is used in a high temperature environment.

[0022] By opening two hollow grooves 12 on the piston body 1, the overall weight of the piston body 1 can be reduced, and the weight reduction can improve the working efficiency of the piston body 1, thereby improving the overall lubrication effect of the piston body 1 to a certain extent. By setting a plurality of reinforcing rib blocks 13, a certain supporting effect can be played on the entire hollow groove 12, thereby preventing the part of the piston body 1 outside the hollow groove 12 from being easily damaged.

[0023] Furthermore, in order to better transport the reciprocating lubricating oil in one direction, one side of the outer surface of the spacer block 10 is in contact with the inner wall of the through hole, and the other side of the outer surface of the spacer block 10 is provided with a pointed end.

[0024] Furthermore, in order to cooperate with the cooling work of the bearing 2, two ends of the plurality of oil grooves 8 are respectively connected to the oil ring groove 7 and the corresponding bearing 2.

[0025] On the basis of improving the cooling work, in order to increase the overall wear resistance of the piston body 1 and further improve the service life of the piston body 1, a ceramic coating is provided on the outer surface of the piston body 1. A groove is provided on the top of the piston body 1, which can help optimize the mixing of air and fuel in the combustion chamber, make the mixed gas more evenly distributed, and improve the combustion efficiency.

[0026] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0028] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An aluminum alloy internal combustion locomotive piston, comprising a piston body (1), characterized in that: The piston body (1) is provided with two pin holes, the interiors of the two pin holes are fixedly connected with bearings (2), the interiors of the bearings (2) are fixedly plugged with a piston pin shaft (3), the axis of the piston pin shaft (3) is provided with a through hole, the two sides of the through hole are respectively fixedly connected with a first sealing block (9) and the piston body (1), a plurality of spacers (10) are fixedly connected between the first sealing block (9) and the second sealing block (11) and are cross-distributed up and down, and the bearing (2) is fixedly connected to the second sealing block (11). An oil delivery hole (15) is provided on the lower outer surface of one side, an oil inlet hole (14) is provided on the upper outer surface of the bearing (2) on one side of the first sealing block (9), a pin connecting block (4) is fixedly connected to the bottom of the piston pin shaft (3), two air ring grooves (6) and one oil ring groove (7) are provided on the surface of the piston body (1) above the pin hole, and a plurality of oil grooves (8) connected to the bearing (2) are provided directly above the two pin holes of the oil ring groove (7) and between the oil ring groove (7).

2. The aluminum alloy internal combustion locomotive piston according to claim 1, characterized in that: One side of the outer surface of the spacer (10) is in contact with the inner wall of the through hole, and the other side of the outer surface of the spacer (10) is provided with a pointed end.

3. The aluminum alloy internal combustion locomotive piston according to claim 1, characterized in that: The outer surface of the piston body (1) is provided with two symmetrical hollow grooves (12), and a plurality of reinforcing rib blocks (13) distributed at equal intervals are fixedly connected inside the two hollow grooves (12).

4. The aluminum alloy internal combustion locomotive piston according to claim 1, characterized in that: The oil inlet hole (14) and the oil delivery hole (15) are respectively arranged on adjacent sides of the two bearings (2).

5. The aluminum alloy internal combustion locomotive piston according to claim 1, characterized in that: Both ends of the plurality of oil-through grooves (8) are respectively connected to the oil ring groove (7) and the corresponding bearing (2).

6. The aluminum alloy internal combustion locomotive piston according to claim 1, characterized in that: The outer surface of the piston body (1) is provided with a ceramic coating, and the top of the piston body (1) is provided with a groove.

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