WO2016029549A1

WO2016029549A1 - Dead point-free internal combustion engine dual-piston follower connecting rod mechanism

Info

Publication number: WO2016029549A1
Application number: PCT/CN2014/090549
Authority: WO
Inventors: 尹建
Original assignee: 尹建
Priority date: 2014-08-29
Filing date: 2014-11-07
Publication date: 2016-03-03
Also published as: CN104265453B; CN104265453A

Abstract

A dead point-free internal combustion engine dual-piston follower connecting rod mechanism, comprising a main piston (1), an inner cavity (13) being arranged within the main piston (1) along the axial direction thereof, a pin hole (15) perpendicular to the axial direction of the main piston (1) being arranged thereon, a pin shaft (3) being installed within the pin hole (15), an auxiliary piston (2) being installed within the inner cavity (13), two fixing plates (5) being arranged side-by-side at a lower end of the auxiliary piston (2), a first slide groove (6) being formed between the two fixing plates (5), a guide block (12) being arranged between the two fixing plates (5), the guide block (12) being located at a lower portion of the fixing plates (5), a space of an upper portion of the guide block (12) being a second slide groove (7), a slide block (8) being installed within the second slide groove (7), an arc-shaped recess (11) being arranged on the slide block (8), the guide block (12) guiding the slide block, the pin shaft (3) being connected to an upper end of a connecting rod (4), the connecting rod (4) being hinged to the main piston (1) via the pin shaft (3), the connecting rod (4) being capable of using the pin shaft (3) as an axis to swing with respect to the main piston (1). One side of the upper end of the connecting rod (4) is provided with a shifting block (10), the shifting block (10) being located within the second slide groove (7) and matching the arc-shaped recess (11), the central angle of the arc-shaped recess (11) being greater than 180 degrees, a strip-shaped groove (9) being arranged on each fixing plate (5), the strip-shaped grooves (9) matching the pin shaft (3). The dead point-free internal combustion engine dual-piston follower connecting rod mechanism has the advantages of a simple structure and convenient manufacturing, and enables a single-cylinder internal combustion engine to be more fully applied.

Description

Double-piston follower linkage mechanism without dead point internal combustion engine

Technical field

The invention relates to a double piston follower linkage mechanism for a dead point free internal combustion engine.

Background technique

The existing piston reciprocating internal combustion engine has a problem that the piston has a dead point when it is descending from the top dead center in the power stroke. The main reason is that the thrust direction of the conventional internal combustion engine piston can only be the downward direction of the piston, that is, the piston cannot transmit the thrust in multiple directions. When the piston reaches the top dead center, the thrust not only does not work but also directly acts on the crankshaft, increasing the load on the crankshaft, causing different degrees of damage to the crankshaft and the entire internal combustion engine, thereby shortening the service life of the internal combustion engine.

Summary of the invention

The object of the present invention is to provide a double-piston follower linkage mechanism for a dead-end free internal combustion engine, which can eliminate the problem of the dead point of the piston when the piston is descending at the top dead center in the work stroke of the conventional reciprocating internal combustion engine, and can effectively extend the piston. Do the power stroke and reduce the load on the crankshaft to extend the service life of the crankshaft and the entire internal combustion engine.

The object of the present invention is achieved by the following technical solution: a double-piston follower linkage mechanism for a dead-end free internal combustion engine, including a main piston, an inner cavity is opened in the main piston, and a pin hole is opened in a direction perpendicular to the central axis of the main piston. The pin hole communicates with the inner cavity, the pin shaft is installed in the pin hole, the auxiliary piston is installed in the inner cavity, and the lower end of the auxiliary piston is arranged with two fixing plates, and the two fixing plates form a first sliding groove, and the two fixing plates are arranged A guiding block is arranged, the guiding block is located at a lower part of the fixing plate, the space of the upper part of the guiding block is a second sliding slot, the second sliding slot is provided with a slider, the sliding block is provided with an arc-shaped groove, the guiding block is a slider guiding, the pin The shaft is connected with the upper end of the connecting rod, and the connecting rod is hinged with the main piston through the pin shaft, and the connecting rod can swing with respect to the main piston with the pin shaft as an axis, the upper end of the connecting rod is located in the first sliding slot, and the upper end side of the connecting rod is provided The dial block is located in the second chute and cooperates with the arc groove. The surface of the dial block and the arc groove is a curved surface or a spherical surface, and the central angle of the curved groove is greater than the degree, and each fixed plate is fixed. Each has a strip groove, a strip groove and a pin shaft and a fit

In order to further achieve the object of the present invention, it is also possible to adopt the following technical solution: a reinforcing block is arranged on the side wall of the main piston at the pin hole. The inner end of the guiding block is provided with a sloped surface, and the lower end of the inclined surface is inclined outward. The slider is a cylinder, and the arcuate groove is located at the end face of the cylinder. The pin hole is biased toward one side of the main piston, and the center line of the pin hole does not pass through the central axis of the main piston.

The positive effect of the present invention is that its piston is composed of two parts, a primary piston 1 and a secondary piston 2, and the secondary piston 2 is axially movable relative to the primary piston 1. When the piston is operated to the top dead center position, the secondary piston 2 is moved downward relative to the primary piston 1, and the connecting rod 4 is forcibly controlled by the slider 8 and the dial block 10 to prevent the piston from being dead at the top dead center, thereby being effective. Improve the smoothness of the internal machine and extend the service life of the internal combustion engine. The invention also has the advantages of simple structure and convenient manufacture.

DRAWINGS

1 is a schematic structural view of the double-piston follower linkage mechanism of the dead-end combustion engine; FIG. 2 is a bottom view of FIG. 1; FIG. 3 is a cross-sectional view taken along line AA of FIG. 1; The end faces of the second chute 7 and the slider 8 are rectangular holes; FIG. 5 is a right side view of FIG. 1, in which the end faces of the second chute 7 and the slider 8 are both circular holes; FIG. 6 is along FIG. BB line cross-sectional view, the connecting rod 4 is biased to the left side, at the same time, the secondary piston 2 extends outwardly from the main piston 1; FIG. 7 is a structural schematic diagram of the connecting rod 4 moving from the vertical position to the vertical position, FIG. 2 is just received in the main piston 1; FIG. 8 is a schematic structural view of the connecting rod 4 moving from the position shown in FIG. 7 to the position on the right side, in which the sub-piston 2 extends downwardly from the main piston 1; FIG. 9 is the sub-piston Three-dimensional structure diagram.

LIST OF REFERENCE NUMERALS 1 main piston 2 sub piston 3 pin 4 link 5 fixing plate 6 first chute 7 second chute 8 slider 9 strip groove 10 dial block 11 curved groove 12 guide block 13 inner cavity 14 reinforcement block 15 pin hole 16 bevel. detailed description

As shown in FIG. 1, the double-piston follower linkage mechanism of the dead-end combustion engine according to the present invention includes a main piston 1. As shown in Fig. 3, the inner piston 13 is opened in the main piston 1 in the direction of the central axis. As shown in FIG. 4, the main piston 1 has a pin hole 15 formed in a direction perpendicular to the central axis thereof, and the pin hole 15 communicates with the inner cavity 13. A pin 3 is mounted in the pin hole 15. The sub piston 2 is mounted in the inner chamber 13, and the sub piston 2 is linearly movable in the direction of the central axis of the inner chamber 13. As shown in FIG. 3, the lower end of the secondary piston 2 is provided with two fixing plates 5 side by side. A first chute 6 is formed between the two fixing plates 5. As shown in FIG. 6 and FIG. 9, a guide block 12 is disposed between the two fixing plates 5, and the guiding block 12 is located at a lower portion of the fixing plate 5, and a space of an upper portion of the guiding block 12 is a second sliding groove 7. The second chute 7 is in communication with the first chute 6. A slider 8 is mounted in the second chute 7, and the slider 8 is provided with an arcuate groove 11 for guiding the slider 8, and the slider 8 is linearly movable along the guiding block 12. As shown in Fig. 6, the pin 3 is coupled to the upper end of the link 4, and the link 4 is hinged to the main piston 1 via the pin 3. The link 4 is swingable relative to the main piston 1 with the pin 3 as an axis. The upper end of the connecting rod 4 is located in the first chute 6, and the first chute 6 provides a space for the connecting rod 4 to swing. A dial block 10 is provided on the upper end side of the link 4. The dial block 10 is located in the second chute 7 and Cooperating with the curved groove 11. The face of the dial block 10 engaging with the curved groove 11 is a curved surface or a spherical surface, and the central angle of the curved groove 11 is greater than 180 degrees, so that the slider 10 can linearly reciprocate when the dial block 10 is swung. As shown in Fig. 9, each of the fixing plates 5 is provided with a strip-shaped groove 9, and the strip-shaped groove 9 is engaged with the pin shaft 3 to ensure that the secondary piston 2 is not hindered by the pin shaft 3 when it is axially moved. When the manufacturing process is performed, the secondary piston 2, the fixed plate 5, and the guide block 12 are usually integrally molded. When installed and used, the primary piston 1 and the secondary piston 2 are housed in the piston cylinder, and the lower end of the connecting rod 4 is hinged to the crank of the internal combustion engine.

The principle of no dead point:

As shown in Fig. 7, when the primary piston 1 is moved to the top dead center position, the high pressure gas in the piston cylinder is detonated, and at this time, the generated large pressure acts on the end faces of the primary piston 1 and the secondary piston 2 at the same time. Under pressure, the secondary piston 2 will immediately move down relative to the primary piston 1. At the same time, the secondary piston 2 will swing downward through the slider 8 and the connecting rod 4 will be swung to the right to the position shown in FIG. Thereby, the piston and the connecting rod 4 are smoothly transitioned from the top dead center position. Therefore, the mechanism of the present invention can completely eliminate the dead point in the working stroke of the internal combustion engine.

In order to enhance the strength of the main piston 1, as shown in FIG. 1, a reinforcing block 14 is disposed on the side wall of the main piston 1 at the pin hole 15.

As shown in FIG. 6, the inner end of the guiding block 12 is provided with a sloped surface 16, and the lower end of the inclined surface 16 is inclined outward to provide more space for the swinging of the connecting rod 4, and at the same time, does not affect the guiding block 12 to the slider 8. The guiding distance.

To reduce the difficulty of assembly, save manufacturing costs. As shown in Fig. 5, the slider 8 is a cylinder, as shown in Fig. 6, the arcuate groove 11 is located at the end face of the cylinder. The advantage that the slider 8 is a cylinder is that even when the connecting rod 4 is processed, the position of the dial block 10 relative to the connecting rod 4 is deviated due to the low precision, and the slider 8 can be rotated by a certain angle. The block 10 cooperates with the curved recess 11 and, without affecting the sliding of the slider 8 in the second chute 7. When the slider 8 is a cylinder, the face of the guide block 12 that engages with the slider 8 is a curved surface.

To further ensure that the internal combustion engine has no dead point, as shown in FIG. 1, the pin hole 15 is biased toward one side of the main piston 1, and the center line of the pin hole 15 does not pass through the central axis of the main piston 1.

The technical solutions described in the present invention are not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all well-known techniques.

Claims

The double-piston follower linkage mechanism of the dead end internal combustion engine is characterized in that it comprises a main piston (1), and an inner cavity (13) is opened in the main piston (1) along the central axis thereof, and the main piston (1) is perpendicular to the central axis direction thereof. A pin hole (15) is opened, the pin hole (15) communicates with the inner cavity (13), the pin hole (15) is provided with a pin shaft (3), the inner cavity (13) is provided with a secondary piston (2), and the secondary piston (2) There are two fixing plates (5) arranged side by side at the lower end, and a first sliding groove (6) is formed between the two fixing plates (5), and a guiding block (12) is arranged between the two fixing plates (5), and the guiding block is arranged (12) Located in the lower part of the fixed plate (5), the space in the upper part of the guiding block (12) is the second sliding slot (7), and the slider (8) is installed in the second sliding slot (7), and the slider (8) is arranged There is an arcuate groove (11), the guide block (12) is guided by the slider (8), the pin (3) is connected with the upper end of the connecting rod (4), and the connecting rod (4) is passed through the pin (3) and the main The piston (1) is hinged, and the connecting rod (4) can swing with respect to the main piston (1) with the pin (3) as an axis, and the upper end of the connecting rod (4) is located in the first sliding groove (6), and the connecting rod (4) The upper end side is provided with a dial block (10), the dial block (10) is located in the second chute (7) and cooperates with the arcuate groove (11), the dial block (10) and the curved groove (11) The mating face is curved or spherical. The central angle of the arcuate groove (11) is greater than 180 degrees, and each of the fixing plates (5) is provided with a strip groove (9), and the strip groove (9) is engaged with the pin shaft (3).
The double-piston follower linkage mechanism for a dead-end combustion engine according to claim 1, wherein a reinforcing block (14) is disposed on a side wall of the main piston (1) at the pin hole (15).
The double-piston follower linkage mechanism of the dead-end combustion engine according to claim 1, wherein the inner end of the guide block (12) is provided with a slope (16), and the lower end of the slope (16) is inclined outward.
The double-piston follower linkage mechanism of the dead-end combustion engine according to claim 1, wherein the slider (8) is a cylinder, and the arcuate groove (11) is located at the end surface of the cylinder.
The double-piston follower linkage mechanism for a dead point-free internal combustion engine according to claim 1, wherein said pin hole (15) is biased toward one side of the main piston (1), and the center line of the pin hole (15) does not pass through the main The central axis of the piston (1).