Anti-rotation piston for ring-arranged diesel engines

Abstract

The application discloses a kind of anti-torsion pistons applied to annularly arranged diesel engine, it is related to diesel engine technical field, comprising: piston, piston is slidably arranged in the cylinder of annularly arranged diesel engine body, the middle part of piston is provided with the gap of sliding fit with the rotating disc of annularly arranged diesel engine body, the inner wall of cylinder is provided with the limit slot of strip along the axial direction of cylinder, and the limit block is arranged on the piston, and the limit block is slidably arranged in the limit slot along the axial direction of cylinder;When piston and rotating disc cooperate movement, piston will be subjected to the force that it occurs torsion, at this time, since limit block is located in the limit slot of the inner wall of cylinder, limit slot can prevent piston from torsion by limit block, can guarantee the normal operation of equipment, improve the service life of equipment.

Description

Technical Field

[0001] This invention relates to the field of diesel engine technology, and in particular to an anti-torsion piston for use in an annular diesel engine. Background Technology

[0002] In certain fields using piston diesel engines, such as the automotive industry, to increase output power, multiple cylinders are often required to work together to complete power output while minimizing space occupation. Therefore, a specific annular arrangement diesel engine is needed to achieve power output. The power principle of an annular arrangement diesel engine is the same as that of a traditional piston diesel engine, where the piston performs work to drive the output shaft. However, the structure is different. In an annular arrangement diesel engine, multiple cylinders are arranged around the output shaft, and the cylinder axes are parallel to the output shaft axis. A rotating disk with a smoothly transitioning wave shape is set on the output shaft. The piston in the cylinder cooperates with the rotating disk, thereby driving the output shaft to move. Although this type of annular arrangement diesel engine can achieve multi-cylinder collaborative work while reducing space occupation, there is a problem: during the movement of the piston and the rotating disk, the piston will experience circumferential torsion, which will affect the normal transmission between the piston and the rotating disk and reduce the service life of the equipment.

[0003] Therefore, there is an urgent need for an anti-torsion piston that can prevent torsion and improve service life for use in annular diesel engines. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-torsion piston for an annular diesel engine to solve the problems existing in the prior art. By utilizing the limiting function of the limiting block and the limiting groove, the piston is prevented from torturing, ensuring the normal operation of the equipment and improving its service life.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides an anti-torsion piston for an annular diesel engine, comprising a piston slidably disposed in a cylinder of the annular diesel engine body, the piston having a notch in the middle for sliding cooperation with a turntable of the annular diesel engine body, the inner wall of the cylinder having a strip-shaped limiting groove along the axial direction of the cylinder, and a limiting block disposed on the piston, the limiting block being slidably disposed in the limiting groove along the axial direction of the cylinder.

[0006] Preferably, the cross-section of the limiting groove is trapezoidal, and the limiting block matches the limiting groove.

[0007] Preferably, the piston includes a sliding body and a plug top serving as the lower wall of the combustion chamber. The sliding body is slidably disposed within the cylinder. The notch is disposed on the sliding body. The plug top is disposed at the end of the sliding body. The limiting block is disposed on the sliding body.

[0008] Preferably, the sliding body is provided with plugs at both ends.

[0009] Preferably, a roller is provided at the notch, and the inner wall of the notch makes rolling contact with the turntable through the roller.

[0010] Preferably, the wall surface of the notch is provided with a groove for embedding the roller, and the roller is positioned in the groove by a pin.

[0011] Preferably, the annular diesel engine includes a body, an output shaft, an injector, and a valve train for intake and exhaust. The output shaft is rotatably mounted in the body, which contains a plurality of cylinders. The axes of the cylinders are parallel to the axis of the output shaft, and the cylinders are evenly distributed around the output shaft. A turntable with a smoothly transitioning wave shape is fixedly mounted on the output shaft at the position corresponding to the cylinder. The intake and exhaust ports of the valve train, as well as the injector, are all connected to the end of the cylinder. The valve train is located at the axial end of the cylinder.

[0012] Preferably, the output shaft is hollow, and an oil inlet hole is radially provided on the output shaft. An annular oil groove is provided on the output shaft at the position corresponding to the oil inlet hole. An annular passage is formed between the annular oil groove and the machine body. The oil supply unit is connected to the annular passage. A lubricating oil passage is provided inside the turntable and is connected to the inner cavity of the output shaft. The end of the lubricating oil passage away from the output shaft is connected to the notch provided on the piston. The cavity where the turntable is located is connected to the return oil passage.

[0013] Preferably, the piston has a groove near the output shaft, and the length of the groove along the piston axis is greater than the length of the notch along the piston axis.

[0014] Preferably, the roller is configured to correspond to the lubrication oil circuit.

[0015] The present invention achieves the following main technical effects compared to the prior art:

[0016] During the movement of the piston and the turntable, the piston is subjected to a force that causes it to twist. At this time, since the limiting block is located in the limiting groove on the inner wall of the cylinder, the limiting groove will prevent the piston from twisting through the limiting block, which can ensure the normal operation of the equipment and improve the service life of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the anti-torsion piston applied to the annular diesel engine body in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of the piston, turntable and output shaft of the diesel engine body arranged in a ring according to an embodiment of the present invention;

[0021] Among them, 1. Piston; 2. Cylinder; 3. Notch; 4. Limiting groove; 5. Limiting block; 6. Sliding body; 7. Plug top; 8. Roller; 9. Pin; 10. Machine body; 11. Output shaft; 12. Turntable; 13. Annular passage; 14. Lubricating oil passage; 15. Tank. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The purpose of this invention is to provide an anti-torsion piston for use in annular diesel engines, in order to solve the problems existing in the prior art. By utilizing the limiting function of the limiting block and the limiting groove, the piston is prevented from torturing, ensuring the normal operation of the equipment and improving its service life.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Please refer to the following: Figures 1-3As shown, an anti-torsion piston for an annular diesel engine is provided, comprising a piston 1 slidably disposed in a cylinder 2 of the annular diesel engine body. A notch 3 is provided in the middle of the piston 1, which slides with a turntable 12 of the annular diesel engine body. A strip-shaped limiting groove 4 is provided on the inner wall of the cylinder 2 along the axial direction of the cylinder 2. In actual design, the limiting groove 4 should be offset from the combustion chamber at the end of the piston 1, whose volume changes continuously, to prevent substances in the combustion chamber from entering the limiting groove 4. A limiting block 5 is provided on the piston 1, which slides along the axial direction of the cylinder 2 in the limiting groove 4. When the piston 1 moves in conjunction with the turntable 12, the piston 1 will be subjected to a force that causes it to twist. At this time, since the limiting block 5 is located in the limiting groove 4 on the inner wall of the cylinder 2, the limiting groove 4 will prevent the piston 1 from twisting through the limiting block 5, thus ensuring the normal operation of the equipment and improving its service life.

[0026] In some embodiments, the limiting groove 4 has a trapezoidal cross-section, with the bottom edge of the trapezoid close to the piston 1. The limiting block 5 is a trapezoidal block that matches the limiting groove 4. The trapezoidal shape increases the thickness of the limiting block 5 near the piston 1, thereby improving its structural strength, enabling it to withstand greater torsional forces without breaking or being damaged, and extending the service life of the equipment.

[0027] The limiting block 5 can be integrated with the piston 1 to further improve the structural strength.

[0028] In some embodiments, the piston 1 has a specific structure including a sliding body 6 and a plug top 7 serving as the lower wall of the combustion chamber. The sliding body 6 is slidably disposed in the cylinder 2, a notch 3 is disposed on the sliding body 6, a plug top 7 is disposed at the end of the sliding body 6, and a limiting block 5 is disposed on the sliding body 6.

[0029] A plug top 7 can be provided at both ends of the sliding body 6 to form an opposed piston. A corresponding combustion chamber can be arranged at both ends of the piston 1. The two combustion chambers cooperate (the intake stroke of one combustion chamber corresponds to the compression stroke of the other combustion chamber) to jointly drive the piston 1 to move.

[0030] In some embodiments, a roller 8 is provided at the notch 3. The inner wall of the notch 3 rolls in contact with the turntable 12 through the roller 8, which can effectively reduce the friction between the piston 1 and the turntable 12, improve the service life, reduce the generated torsional force, and further reduce the load that the limit block 5 needs to bear.

[0031] The roller 8 is specifically designed as follows: a groove for embedding the roller 8 is provided on the wall of the notch 3. The roller 8 is positioned in the groove by a pin 9. The roller 8 and the pin 9 rotate in engagement. The pin hole extends from the side of the piston 1 away from the notch 3 to the inner wall of the groove near the output shaft 11. A stop block needs to be set at the pin hole on the side of the piston 1 away from the notch 3 to prevent the pin 9 from coming out. Alternatively, the pin 9 can be replaced with a bolt, and the pin hole can be replaced with a threaded hole. The position of the bolt corresponding to the roller 8 is a smooth surface. The roller 8 rotates in engagement with the smooth surface. At this time, the position of the roller 8 is fixed by a threaded connection. The purpose is to complete the installation of the roller 8 and ensure the rotation of the roller 8.

[0032] The annular diesel engine in this embodiment includes a body 10, an output shaft 11, fuel injectors, and a valve train for intake and exhaust. The output shaft 11 is rotatably mounted in the body 10, which houses a plurality of cylinders 2. The axes of the cylinders 2 are parallel to the axis of the output shaft 11, and the cylinders 2 are evenly distributed around the output shaft 11. A turntable 12 with a smoothly transitioning wave-shaped rotating surface is fixedly mounted on the output shaft 11 at the position corresponding to the cylinders 2. The intake and exhaust ports of the valve train, as well as the fuel injectors, are all connected to the ends of the cylinders 2. The valve train is located at the axial end of cylinder 2. Its working principle is as follows: the axial movement of piston 1 in cylinder 2 will squeeze the turntable 12 to move. Since the rotating surface of turntable 12 unfolds into a smooth transition wave shape, piston 1 will actually squeeze turntable 12 to rotate around the axis of output shaft 11, thereby driving output shaft 11 to move. It should be noted that the strokes in multiple cylinders 2 are not synchronized. When one cylinder 2 performs the power stroke, the movement generated drives the intake stroke, compression stroke, or exhaust stroke in other cylinders 2.

[0033] To lubricate the piston 1, the output shaft 11 is hollow and has an oil inlet hole radially arranged on it. An annular oil groove is arranged on the output shaft 11 at the position corresponding to the oil inlet hole. An annular passage 13 is formed between the annular oil groove and the machine body 10. The oil supply unit is connected to the annular passage 13. The turntable 12 has a lubrication oil passage 14 that is connected to the inner cavity of the output shaft 11. The end of the lubrication oil passage 14 away from the output shaft 11 is connected to the notch 3 of the piston 1. The cavity where the turntable 12 is located is connected to the return oil passage. The lubrication principle is as follows: the lubricating oil supplied by the oil supply unit enters the inner cavity of the output shaft 11 from the annular passage 13, and then is supplied from the inner cavity of the output shaft 11 into the lubrication oil passage 14 of the turntable 12. It is then sprayed from the lubrication oil passage 14 onto the notch 3 of the piston 1, so that the notch 3 of the piston 1 is contaminated with lubricating oil. The notch 3 moves with the movement of the piston 1, and the lubricating oil at the notch 3 is transferred to the movement path of the piston 1, thereby achieving lubrication of the piston 1.

[0034] Based on the corresponding lubrication system, a groove 15 can be provided on the piston 1 near the output shaft 11. The length of the groove 15 along the axial direction of the piston 1 is greater than the length of the notch 3 along the axial direction of the piston 1. The groove 15 and the inner wall of the cylinder 2 form a chamber that can accommodate some lubricating oil, thereby increasing the amount of lubricating oil when the piston 1 moves and improving the lubrication effect on the piston 1.

[0035] In some embodiments, the roller 8 is configured to correspond to the lubrication oil passage 14, which can effectively improve the lubrication effect of the roller 8, further reduce the friction between the roller 8 and the turntable 12, and thus reduce the generated torsional force and the load that the limit block 5 needs to bear.

[0036] In actual use, during each stroke stage of the combustion chamber of cylinder 2, piston 1 will move inside cylinder 2. The movement of piston 1 drives turntable 12 and output shaft 11 to rotate. At this time, piston 1 will be subjected to torsional force. The limiting groove 4 on the inner wall of cylinder 2 restricts piston 1 from torsion by limiting the circumferential movement of limiting block 5.

[0037] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0038] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An anti-torsion piston for an annular diesel engine, characterized in that, The device includes a piston that is slidably disposed in a cylinder of an annularly arranged diesel engine body. The piston has a notch in the middle that is slidably engaged with a turntable of the annularly arranged diesel engine body. The inner wall of the cylinder has a strip-shaped limiting groove along the axial direction of the cylinder. A limiting block is disposed on the piston and is slidably disposed in the limiting groove along the axial direction of the cylinder. A roller is provided at the notch, and the inner wall of the notch makes rolling contact with the turntable through the roller; The annular diesel engine includes a body, an output shaft, fuel injectors, and a valve train for intake and exhaust. The output shaft is rotatably mounted in the body, which contains a plurality of cylinders. The axes of the cylinders are parallel to the axis of the output shaft, and the cylinders are evenly distributed around the output shaft. A turntable with a smoothly transitioning wave shape is fixedly mounted on the output shaft at the position corresponding to the cylinder. The intake and exhaust ports of the valve train, as well as the fuel injectors, are all connected to the ends of the cylinders. The valve train is located at the axial end of the cylinder. The output shaft is hollow and has an oil inlet hole radially arranged on it. An annular oil groove is arranged on the output shaft corresponding to the position of the oil inlet hole. The annular oil groove and the machine body form an annular passage. The oil supply unit is connected to the annular passage. The turntable has a lubricating oil passage that is connected to the inner cavity of the output shaft. The end of the lubricating oil passage away from the output shaft is connected to the notch of the piston. The cavity where the turntable is located is connected to the return oil passage. The piston has a groove near the output shaft, and the length of the groove along the piston axis is greater than the length of the notch along the piston axis. The notch communicates with the groove, the length of the groove along the piston axis is greater than the length of the limiting groove along the piston axis, and the groove covers the limiting groove in the radial direction. The groove extends along the piston circumferentially to the mounting base near the limiting block, and the diameter of the mounting base of the limiting block is smaller than the diameter of the end cap of the piston. The limiting groove has a trapezoidal cross-section, and the limiting block matches the limiting groove.

2. The anti-torsion piston for an annular diesel engine according to claim 1, characterized in that, The piston includes a sliding body and a plug top that serves as the lower wall of the combustion chamber. The sliding body is slidably disposed within the cylinder. The notch is disposed on the sliding body. The plug top is disposed at the end of the sliding body. The limiting block is disposed on the sliding body.

3. The anti-torsion piston for an annular diesel engine according to claim 2, characterized in that, Both ends of the sliding body are provided with plug tops.

4. The anti-torsion piston for an annular diesel engine according to claim 1, characterized in that, The wall of the notch is provided with a groove for embedding the roller, and the roller is positioned in the groove by a pin.

5. The anti-torsion piston for an annular diesel engine according to claim 1, characterized in that, The rollers are configured to correspond to the lubrication oil circuit.

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