A piston connecting rod mechanism

Abstract

The application provides a piston connecting rod mechanism, which comprises a top surface piston, a piston body and a connecting rod part, pin holes are arranged on the upper and lower sides of the piston body, the pin hole on the upper side of the piston body is connected with the top surface piston through the connecting rod part, a roller shaft is arranged in the pin hole on the lower side of the piston body, a positioning long groove is arranged on one side of the piston body, lubricating oil taking long grooves are arranged on the front and rear sides of the piston body, and hidden oil channel holes are arranged in the lubricating oil taking long grooves and are communicated with the contact shaft neck center of the roller shaft, and a roller assembly is arranged on the roller shaft. The piston connecting rod mechanism realizes the split design of the piston ring group and the piston profile in the piston part, and the piston assembly is designed to be elongated, the driving and reciprocating of the rotating disc on the connecting rod assembly are realized through the roller and the back wheel design, the circumferential arrangement of the engine cylinder is solved, the crank connecting rod mechanism is changed into the rotating disc circumferential driving, the number of parts is reduced, and the part machining and assembly of the engine are simplified.

Description

Technical Field

[0001] This invention belongs to the field of engine mechanics, and in particular relates to a piston connecting rod mechanism. Background Technology

[0002] Conventional engines typically have an axial cylinder arrangement, with each cylinder arranged either in a straight line or in a V-shape along the engine crankshaft. Fuel burns and performs work within the cylinders, and the energy is transferred to the output shaft through the reciprocating motion of the crankshaft and connecting rod mechanism.

[0003] Traditional engine crankshaft and connecting rod mechanisms are complex, and the axial arrangement of cylinders increases the longitudinal volume of the engine. There is a need for a new type of piston and connecting rod mechanism that can be applied to a new rotary engine, which can solve the problems of small size and power, complex structure and many parts in axially arranged engines. Summary of the Invention

[0004] In view of this, the present invention aims to propose a piston-connecting rod mechanism for use in a novel rotary engine. This rotary engine enables the cylinders to be arranged radially (circumferentially) within the engine block. The rotary engine eliminates the crankshaft and connecting rod mechanism of conventional engines, replacing them with a rotary disc and a novel piston-connecting rod mechanism. This aims to overcome the problems of the complexity of traditional engine crankshaft and connecting rod mechanisms and the increased longitudinal volume of the engine due to the axial arrangement of cylinders. It provides a novel piston-connecting rod mechanism that can be applied to a novel rotary engine, solving the problems of small size and power, complex structure, and numerous parts in axially arranged engines. Ultimately, it realizes the application of a novel cylinder arrangement and rotary-driven piston engine.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A piston-connecting rod mechanism includes a top piston, a piston body, and a connecting rod assembly. The piston body has pin holes on its upper and lower sides. The pin hole on the upper side of the piston body is connected to the top piston through the connecting rod assembly. A roller shaft is installed in the pin hole on the lower side of the piston body. A positioning groove is provided on one side of the piston body. Lubricating oil intake grooves are provided on both the front and rear sides of the piston body, and a concealed oil passage hole is provided in the oil intake groove, which communicates with the center of the contact journal of the roller shaft. A roller assembly is provided on the roller shaft.

[0007] Furthermore, the top piston has pin holes at both its upper and lower ends, and a piston ring mounting groove, a piston pin control, and an oil ring are provided between the two pin holes. The piston ring mounting groove includes a top piston ring, a first piston ring, and a second piston ring. The rings are arranged from top to bottom as follows: top piston ring, first piston ring, piston pin hole, second piston ring, and oil ring. A top piston pin is installed in the piston pin hole, and sealing plugs are installed on both sides of the top piston. The sealing plugs are installed on both sides of the piston pin hole. The sealing plugs have protrusions corresponding to the piston pin holes, and the sealing plugs are interference-fitted into the top piston.

[0008] Furthermore, the bottom of the piston body is provided with a piston pin hole for installing the piston pin and a roller hole for installing the roller component. The piston pin is installed on the piston body through the piston pin hole. The surface hardness of the top piston pin and the piston pin is improved by heat treatment. A first retaining ring is installed in the piston pin hole and is installed at the end of the piston pin. A second retaining ring is installed in the top piston pin hole and is installed at both ends of the top piston pin.

[0009] Furthermore, the connecting rod assembly has upper and lower shaft holes on its upper and lower end faces. The upper shaft hole connects to the piston pin on the top surface, and the lower shaft hole connects to the piston body pin. Both shaft holes in the upper and lower shaft holes have double oil-taking holes, with symmetrical oil-taking ramps at both ends. The side of the connecting rod assembly is precision-ground to ensure the thrust dimension. The connecting rod assembly also has connecting rod drain grooves on both sides. Two high-strength wear-resistant bushings are installed on the connecting rod assembly. Both shaft holes in the upper and lower shaft holes have double oil-taking holes with a 60° included angle, with symmetrical 8° oil-taking ramps on each side.

[0010] Furthermore, both sides of the piston body and the connecting rod assembly are provided with connecting rod thrust rings; the connecting rod thrust rings are provided with a number of circular holes distributed along the circumference, the inner hole in the middle of the connecting rod thrust rings is matched with the outer diameter of the piston body pin, and the connecting rod thrust rings adjust the movement clearance of the connecting rod assembly by adjusting the thickness tolerance dimension.

[0011] Furthermore, the piston body has a lower end shaft hole at its bottom, and the roller shaft is installed in the lower end shaft hole of the piston body. The roller shaft has an oil passage hole in the middle, and several evenly distributed oil inlet holes are provided on the side wall of the roller shaft. Lubricating oil can flow from the hidden oil passage of the piston body through the oil inlet holes of the roller shaft into the middle oil passage, and then lubricate the roller contact journal surface from the oil inlet holes. One end of the roller shaft has a thrust surface, and the other end has a retaining ring mounting groove. A roller thrust ring is installed on the roller shaft through the thrust surface, and a retaining ring is installed on the roller shaft through the retaining ring mounting groove. The movement of the roller shaft is adjusted by the installed retaining ring and thrust surface. The roller journal of the roller shaft and the inner hole of the roller component adopt a fit tolerance.

[0012] Furthermore, the roller assembly includes a plurality of rollers, which are mounted on the bottom of the piston body via roller shafts.

[0013] Furthermore, the roller component is equipped with a high-strength wear-resistant bushing, the roller of the roller component is heat-treated to improve the surface hardness of the roller, the two ends of the roller component are precision ground to ensure the thrust dimension, and the side of the roller is provided with several roller oil drain grooves distributed along the circumference.

[0014] Preferably, the number of the roller drain grooves is 6.

[0015] Furthermore, a return wheel thrust ring is installed between the roller assembly and the piston body. The inner hole of the return wheel thrust ring is matched with the outer diameter of the roller shaft. The movement clearance between the roller assembly and the roller shaft is adjusted by the thickness tolerance dimension.

[0016] The inner hole of the roller thrust ring is fitted with the outer diameter of the roller shaft. The roller thrust ring is installed between the piston body and the roller assembly, and the movement clearance between the roller assembly and the piston body is adjusted by the thickness tolerance dimension.

[0017] A novel piston-connecting rod mechanism design differs significantly from conventional crank-connecting rod mechanisms. It elongates the piston as a whole through upper and lower sections, effectively connecting the two parts via a connecting rod assembly. Unlike conventional rotary structures, this piston-connecting rod mechanism utilizes the force generated between the rollers and the turntable, as well as the frictional force between the rollers and the turntable. The development of a turntable engine employing this novel piston-connecting rod mechanism significantly improves both volumetric and mass power outputs. Furthermore, by eliminating the unconventional crank-connecting rod mechanism, the number of engine components is greatly reduced, enhancing the reliability of the turntable engine and lowering both time and economic costs.

[0018] Compared with the prior art, the piston connecting rod mechanism of the present invention has the following advantages:

[0019] (1) This novel piston connecting rod mechanism connects the top piston and piston body through the connecting rod component, realizes the separate design of piston ring assembly and piston profile in piston component, and elongates the piston assembly. The turntable drives and reciprocates the connecting rod assembly through the roller and return wheel design, solves the circumferential arrangement of engine cylinder, and transforms the crank connecting rod mechanism into a turntable circumferential drive, reducing the number of parts and simplifying the processing and assembly of engine parts.

[0020] (2) This new type of piston connecting rod mechanism has the characteristics of simple processing and installation and easy troubleshooting, which reduces the economic cost in the test or product development. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the assembly structure of a novel piston-connecting rod mechanism according to the present invention;

[0023] Figure 2 This is a schematic diagram of the top piston of a novel piston-connecting rod mechanism according to the present invention;

[0024] Figure 3 This is a schematic diagram of the piston body of a novel piston-connecting rod mechanism according to the present invention;

[0025] Figure 4 This is a schematic diagram of the connecting rod body of a novel piston-connecting rod mechanism according to the present invention;

[0026] Figure 5 This is a schematic diagram of a roller thrust ring for a novel piston-connecting rod mechanism according to the present invention;

[0027] Figure 6 This is a schematic diagram of the roller shaft of a novel piston-connecting rod mechanism according to the present invention;

[0028] Figure 7 This is a schematic diagram of a roller component of a novel piston-connecting rod mechanism according to the present invention;

[0029] Figure 8 This is a schematic diagram of the piston pin of a novel piston connecting rod mechanism according to the present invention;

[0030] Figure 9 This is a schematic diagram of a novel piston-connecting rod mechanism sealing plug according to the present invention;

[0031] Figure 10 This is a schematic diagram of a novel piston-connecting rod mechanism thrust ring according to the present invention.

[0032] Figure 11 This is a schematic diagram of the return wheel thrust ring of a novel piston connecting rod mechanism according to the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. First plug; 2. Return wheel thrust ring; 3. Roller thrust ring; 4. First retaining ring; 5. Connecting rod thrust ring; 6. Piston body pin; 7. Second retaining ring; 8. First compression ring; 9. Top surface compression ring; 10. Top surface piston; 11. Connecting rod assembly; 12. Top surface piston pin; 13. Sealing plug; 14. Oil ring; 15. Piston body; 151. Positioning groove; 152. Lubricating oil intake groove; 153. Concealed oil passage hole; 16. Roller shaft; 17. Third retaining ring; 18. Roller assembly; 181. Roller oil drain groove; 19. Second plug; 20. Second compression ring. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] like Figures 1 to 11 As shown, a novel piston connecting rod mechanism includes a top piston 10, pin holes at both the upper and lower ends of the top piston 10, a gas ring mounting groove, a top piston 10 pin control, and an oil ring 14 between the upper and lower pin holes of the top piston 10. The gas ring mounting groove includes a top gas ring 9, a first gas ring 8, and a second gas ring 20.

[0038] The rings are arranged from top to bottom as follows: top surface gas ring 9, first gas ring 8, piston pin hole, second gas ring 20, and oil ring 14. The top surface piston 10 pin is installed in the pin hole of the top surface piston 10, and sealing plugs 13 are installed on both sides of the top surface piston 10. The sealing plugs 13 are installed on both sides of the pin hole of the top surface piston 10. The sealing plugs 13 have protrusions corresponding to the piston pin hole. The sealing plugs 13 are interference-fitted into the top surface piston 10. The top surface piston 10 does not have piston profile lines. The sealing plugs 13 are installed on the two end faces of the pin hole of the top surface piston 10. They are installed into the top surface piston 10 with a slight interference fit through the outer diameter to seal the airflow from the top surface piston 10 into the machine body when it passes through the air inlet.

[0039] The piston body 15 has two pin holes, one above the other. The upper pin hole is connected to the top piston 10 through the connecting rod component 11. The roller shaft 16 is installed in the lower pin hole. The piston body 15 has a long groove for taking out lubricating oil, and a hidden oil passage hole is provided in the long groove. The oil passage is connected to the center of the contact journal of the roller shaft 16. The piston body 15 has a long positioning groove, which cooperates with the positioning pin in the outside to prevent the device from rotating around the circumference. The outer circumference has a piston profile, which cooperates with the cylinder liner to provide support.

[0040] Two high-strength wear-resistant bushings are installed on the connecting rod assembly 11. Two shaft holes are provided on the upper and lower end faces of the assembly. The upper shaft hole is connected to the piston pin 12 of the top piston 10, and the lower shaft hole is connected to the piston body pin 6. Both the upper and lower shaft holes of the connecting rod assembly 11 are provided with double oil-taking holes with a 60-degree included angle. Each end is provided with an 8° (16° included angle between the two inclined planes) oil-taking inclined plane on one side. The two end faces of the connecting rod assembly 11 are precision ground to ensure the thrust dimension, and oil drain grooves are provided on the end faces.

[0041] The roller shaft 16 is installed in the lower end shaft hole of the piston body 15. The roller shaft 16 has an oil passage hole in the middle. Lubricating oil flows from the hidden oil passage of the piston body 15 through the oil inlet hole of the roller shaft 16 into the middle oil passage, and then lubricates the three roller contact journal surfaces through the three oil passage holes respectively. One end of the roller shaft 16 has a thrust surface, and the other end has a mounting groove for a B-type shaft 18 standard retaining ring 17. The movement of the roller shaft 16 is adjusted by the installed B-type shaft 18 standard retaining ring 17 and thrust surface. The roller journal of the roller shaft 16 and the inner hole of the roller component 18 adopt a fit tolerance.

[0042] The roller component 18 is equipped with a high-strength wear-resistant bushing. The roller of the roller component 18 is heat-treated to improve the surface hardness of the roller. Ultra-fine grinding is used to ensure the surface smoothness. The two ends of the roller component 18 are finely ground to ensure the thrust dimension. There are 6 oil drain grooves on each end.

[0043] The top piston pin 12 and piston body pin 6 are heat-treated to improve surface hardness, and the outer surface is precision ground to improve surface smoothness. The middle inner hole of the connecting rod thrust ring 5 is matched with the outer diameter of the piston body pin 6 and is installed between the piston body 15 and the connecting rod assembly 11. The movement clearance of the connecting rod assembly 11 is adjusted by the thickness tolerance dimension.

[0044] The inner hole of the return wheel thrust ring 2 is fitted with the outer diameter of the roller shaft 16 and is installed between the piston body 15 and the roller component 18. The movement clearance between the roller component 18 and the roller shaft 16 is adjusted by the thickness tolerance. The inner hole of the roller thrust ring 3 is fitted with the outer diameter of the roller shaft 16 and is installed between the piston body 15 and the roller component 18. The movement clearance between the roller component 18 and the piston body 15 is adjusted by the thickness tolerance.

[0045] The present invention provides a novel method for installing a piston connecting rod mechanism as follows:

[0046] First, apply Loctite 263 threadlocker to the external thread of the first plug 1 (M8 plug), and use a flathead screwdriver to install the first plug 1 onto the internal threaded hole of the thrust end face of the roller shaft 16. After installing the first plug 1, apply clean machine oil to the shaft diameter surface of the roller shaft 16. Install the second plug 19 (M4×5 socket head cap screw plug) onto the roller shaft 16. Then, install the roller assembly 18 from the other end of the roller shaft 16 onto the thrust end face. After installation, continue to install the return wheel thrust ring 2 onto the end face of the roller assembly 18.

[0047] Apply clean machine oil to each journal of the lower pin hole of the piston body 15, and insert the roller shaft 16 with roller component 18 and return wheel thrust ring 2 into the lower pin hole of the piston body 15. After passing through the first support journal of the lower pin hole of the piston body 15, it passes through the roller thrust ring 3, roller component 18 and roller thrust ring 3 in sequence. Then, pass the roller shaft 16 through the second support journal. Then, install the roller thrust ring 3, roller component 18 and roller thrust ring 3 onto the roller shaft 16 in the aforementioned manner. Then, pass the roller shaft 16 through the third support journal of the piston body 15 until the end face of the return wheel thrust ring 2 contacts the mating end face of the piston body 15. Use the retaining ring caliper to install the third retaining ring 17 (18 / B standard retaining ring) into the annular groove of the protruding end face of the roller shaft 16.

[0048] Using piston ring calipers, install the top surface compression ring 9, the first compression ring 8, and the oil ring 14 into the corresponding ring grooves of the top surface piston 10. Both the first and second compression rings are double compression rings. Apply clean machine oil to the pin hole of the top surface piston 10, and then apply clean machine oil to the outer surface of the piston pin 12. Then insert the piston pin 12 into the piston pin hole of the top surface piston 10, then through the upper pin hole of the connecting rod assembly 11, and then through the pin hole at the other end of the top surface piston 10. Finally, install the sealing plug 13 and the second retaining ring 7 (22 / A standard retaining ring for holes) to both ends of the pin hole of the top surface piston 10.

[0049] After completing the above work, apply clean machine oil to the two supports of the upper pin hole of the piston body 15, and insert the piston pin 6 into the first support journal through the upper pin hole of the piston body 15. Then, pass it through the connecting rod thrust ring 5, the connecting rod component 11 and the connecting rod thrust ring 5 in sequence until the other end face of the piston pin 6 fits against the thrust end face of the pin hole of the piston body 15. After installation, install the first retaining ring 4 (20 / A standard retaining ring) into the groove on the end face of the pin hole of the piston body 15. This completes the component installation of a new type of piston connecting rod mechanism.

[0050] Note: For fixing methods not explicitly mentioned in the text, common fixing and connection methods such as threaded connection, adhesive bonding or welding can be used as needed.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A piston connecting rod mechanism, characterized in that: The assembly includes a top piston (10), a piston body (15), and a connecting rod assembly (11). The piston body (15) has pin holes on its upper and lower sides. The pin hole on the upper side of the piston body (15) is connected to the top piston (10) through the connecting rod assembly (11). The top piston (10) has a pin hole that passes through the top piston. The connecting rod assembly (11) has an upper shaft hole and a lower shaft hole at its upper and lower ends, respectively. The upper shaft hole is connected to the top piston pin (12), and the lower shaft hole is connected to the piston body pin (6). A roller shaft (16) is installed in the pin hole on the lower side of the piston body (15). A positioning groove (151) is provided on one side of the piston body (15). Lubricating oil taking grooves (152) are provided on both the front and rear sides of the piston body (15), and a hidden oil passage hole (153) is provided in the taking groove, which is connected to the center of the contact journal of the roller shaft (16). A roller assembly (18) is provided on the roller shaft (16).

2. The piston connecting rod mechanism according to claim 1, characterized in that: The top piston (10) is provided with a top ring groove, a first ring groove, a piston pin hole, a second ring groove and an oil ring groove from top to bottom. The top ring groove, the first ring groove and the second ring groove are respectively equipped with a top ring (9), a first ring (8) and a second ring (20). An oil ring (14) is installed in the oil ring groove; a top piston pin (12) is installed in the pin hole of the top piston (10); and sealing plugs (13) are installed on both sides of the top piston (10); the sealing plugs (13) are installed on both sides of the hole of the top piston pin (12). The sealing plug (13) has a protrusion corresponding to the piston pin hole, and the sealing plug (13) is interference-fitted into the top piston (10).

3. The piston connecting rod mechanism according to claim 2, characterized in that: The piston body (15) is fitted with a piston pin (6) through a pin hole on the upper side of the piston body (15). The top piston pin (12) and the piston pin (6) are heat-treated to improve their surface hardness. A first retaining ring (4) is installed in the pin hole on the upper side of the piston body (15), and the first retaining ring (4) is installed at the end of the piston body pin (6); A second retaining ring (7) is installed inside the hole of the top piston pin (12), and the second retaining ring (7) is installed at both ends of the top piston pin (12).

4. A piston connecting rod mechanism according to claim 1, characterized in that: Both the upper and lower shaft holes are provided with double oil extraction holes. The two ends of the double oil extraction holes are respectively provided with symmetrical oil extraction inclined surfaces. The side of the connecting rod component (11) is precision ground to ensure the thrust dimension. Both sides of the connecting rod component (11) are provided with connecting rod drain grooves. Two high-strength wear-resistant bushings are installed on the connecting rod component (11).

5. A piston connecting rod mechanism according to claim 4, characterized in that: Both the upper and lower shaft holes are equipped with double oil extraction holes at a 60° included angle, and the ends of the upper and lower shaft holes are respectively equipped with symmetrical single-sided 8° oil extraction slopes.

6. A piston connecting rod mechanism according to claim 1, characterized in that: A connecting rod thrust ring (5) is provided between the piston body (15) and the connecting rod assembly (11); the two connecting rod thrust rings (5) are located on both sides of the connecting rod assembly (11); The connecting rod thrust ring (5) has several circular holes distributed along the circumference. The inner hole in the middle of the connecting rod thrust ring (5) is matched with the outer diameter of the piston pin (6). The connecting rod thrust ring (5) adjusts the movement clearance of the connecting rod assembly (11) by adjusting the thickness tolerance dimension.

7. A piston connecting rod mechanism according to claim 1, characterized in that: The roller shaft (16) is installed in the pin hole on the lower side of the piston body (15) of the piston body (15). The roller shaft (16) has an oil passage hole in the middle and several evenly distributed oil inlet holes on the side wall of the roller shaft (16). Lubricating oil can flow from the dark oil passage of the piston body (15) through the oil inlet hole of the roller shaft (16) into the middle oil passage, and then lubricate the roller contact journal surface from the oil inlet hole. One end of the roller shaft (16) has a thrust surface and the other end has a retaining ring mounting groove. The roller shaft (16) is equipped with a roller thrust ring (3) through the thrust surface and a retaining ring is installed through the retaining ring mounting groove. The movement of the roller shaft (16) is adjusted by the installed retaining ring and thrust surface. The roller journal of the roller shaft (16) and the inner hole of the roller component (18) adopt a fit tolerance.

8. A piston connecting rod mechanism according to claim 1, characterized in that: The roller component (18) includes a plurality of rollers, which are mounted on the bottom of the piston body (15) via roller shafts (16).

9. A piston connecting rod mechanism according to claim 1, characterized in that: The roller component (18) is equipped with a high-strength wear-resistant bushing. The roller of the roller component (18) is heat-treated to improve the surface hardness of the roller. The two ends of the roller component (18) are precision ground to ensure the thrust dimension. The side of the roller is provided with several roller oil drain grooves (181) distributed along the circumference.

10. A piston connecting rod mechanism according to claim 9, characterized in that: The number of roller drain grooves (181) is 6.

11. A piston connecting rod mechanism according to claim 7, characterized in that: A return wheel thrust ring (2) is installed between the roller component (18) and the piston body (15). The inner hole of the return wheel thrust ring (2) is matched with the outer diameter of the roller shaft (16). The movement clearance between the roller component (18) and the roller shaft (16) is adjusted by the thickness tolerance dimension. The inner hole of the roller thrust ring (3) is fitted with the outer diameter of the roller shaft (16). The roller thrust ring (3) is installed between the piston body (15) and the roller component (18). The movement gap between the roller component (18) and the piston body (15) is adjusted by the thickness tolerance dimension.

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