Crank-link mechanism of gasoline engine

Abstract

The utility model belongs to the technical field of crank connecting rod mechanisms, and discloses a gasoline engine crank connecting rod mechanism which comprises a piston, a connecting rod, a crankshaft and a positioning structure, the crankshaft comprises rotating plates and a connecting rod, the rotating plates are connected through the connecting rod, and the connecting rod is movably connected with the piston through the connecting rod. A positioning structure is arranged at the connecting position of the connecting rod and the connecting rod and the connecting position of the connecting rod and the piston, the positioning structure is used for controlling the sliding distance of the connecting rod on the connecting rod, and the positioning structure comprises an auxiliary groove, a limiting groove and an auxiliary plate. According to the crank connecting rod mechanism, the connecting rod is embedded into the connecting rod between the two rotating plates from top to bottom, so that the auxiliary plates are embedded into the limiting grooves through the auxiliary grooves, friction between the connecting rod and the rotating plates is replaced by the balls, and then the problem that when an existing crank connecting rod mechanism operates, the surfaces of the two sides of the connecting rod and plates are repeatedly rubbed is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of crank-connecting rod mechanisms, and in particular relates to a crank-connecting rod mechanism for a gasoline engine. Background Art

[0002] At present, when the crank-connecting rod mechanism is in use, the plates on both sides of the connecting rod are mostly aligned for limiting. After the crank-connecting rod mechanism has been running for a long time, due to the repeated friction between the surfaces on both sides of the connecting rod and the plates, it is very easy to cause excessive wear on the main shaft and the connection, so that the crank-connecting rod mechanism constantly produces abnormal noise during operation, forcing the use effect of the crank-connecting rod mechanism to gradually decrease. Therefore, a gasoline engine crank-connecting rod mechanism is designed to solve the problem of repeated friction between the surfaces on both sides of the connecting rod and the plates during operation of the current crank-connecting rod mechanism. Utility Model Content

[0003] The utility model aims to provide a crank-connecting rod mechanism for a gasoline engine, so as to solve the problem of repeated friction between the surfaces on both sides of the connecting rod and the plate when the current crank-connecting rod mechanism is in operation, as mentioned in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gasoline engine crank-connecting rod mechanism includes a piston, a connecting rod, a crankshaft and a positioning structure, the crankshaft includes a rotating plate and a connecting rod, the rotating plates are connected by a connecting rod, the connecting rod and the piston are movably connected by a connecting rod, and a positioning structure is provided at the connection between the connecting rod, the connecting rod and the piston, and the positioning structure is used to control the sliding distance of the connecting rod on the connecting rod.

[0005] Preferably, the positioning structure includes an auxiliary groove, a limiting groove and an auxiliary plate. A limiting groove is provided on the side wall of the rotating plate and above the connecting rod. The limiting groove is arc-shaped, and an auxiliary groove is provided at the top center of the limiting groove. Auxiliary plates are symmetrically installed at the bottom of both sides of the connecting rod, and the auxiliary plates are slidably embedded in the limiting groove.

[0006] Preferably, an engaging groove is provided in the middle of the surface of the connecting rod, and the connecting rod is sleeved on the engaging groove.

[0007] Preferably, the positioning structure also includes an annular strip and an iron spring, the annular strip is symmetrically arranged on both sides of the inner wall of the piston, and the rear end surface of the annular strip is fixedly connected to the inner wall of the piston through the iron spring, and the connecting rod is embedded between the two annular strips.

[0008] Preferably, circular grooves are symmetrically provided at equal intervals on the end surfaces of the auxiliary plate and the annular strip, and balls are slidably arranged in the grooves, and the balls are in contact with the inner wall of the limiting groove and the outer wall of the connecting rod respectively.

[0009] Preferably, an annular sliding groove is provided on the outer wall of the connecting rod and on one side opposite to the annular strip, and the ball bearings on the annular strip are embedded in the sliding groove.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The utility model is provided with an auxiliary plate, a limiting groove and an auxiliary groove, etc. During installation, the connecting rod is embedded from top to bottom into the connecting rod between the two rotating plates, so that the auxiliary plate is embedded into the limiting groove through the auxiliary groove, and the friction between the connecting rod and the rotating plate is replaced by a ball bearing, thereby solving the problem of repeated friction between the two side surfaces of the connecting rod and the plate during operation of the current crank-connecting rod mechanism.

[0012] (2) The utility model is provided with annular bars and iron springs. During installation, the connecting rod is embedded between the annular bars, and the ball bearings are used to isolate the direct contact between the connecting rod and the annular bars and ensure that the connecting rod can rotate normally. During use, the elastic force of the iron spring is used to limit the end of the connecting rod, and the auxiliary plate is used to improve the stable operation of the connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a side sectional view of the utility model;

[0015] Figure 3 for Figure 1 A in the enlarged view;

[0016] Figure 4 for Figure 1 The enlarged view of point B in the figure;

[0017] In the figure: 1, piston; 2, connecting rod; 3, limiting groove; 4, connecting rod; 5, rotating plate; 6, fitting groove; 7, sliding groove; 8, annular strip; 9, iron spring; 10, auxiliary plate; 11, ball; 12, auxiliary groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4As shown, the utility model provides the following technical solutions: a gasoline engine crank-connecting rod mechanism comprises a piston 1, a connecting rod 2, a crankshaft and a positioning structure, the crankshaft comprises a rotating plate 5 and a connecting rod 4, the rotating plates 5 are connected by the connecting rod 4, the connecting rod 4 and the piston 1 are movably connected by the connecting rod 2, a positioning structure is arranged at the connection between the connecting rod 2, the connecting rod 4 and the piston 1, the positioning structure is used to control the sliding distance of the connecting rod 2 on the connecting rod 4, the positioning structure comprises an auxiliary groove 12, a limiting groove 3 and an auxiliary plate 10, a limiting groove 3 is provided on the side wall of the rotating plate 5 and above the connecting rod 4, the limiting groove 3 is arc-shaped, and an auxiliary groove 12 is provided at the top center of the limiting groove 3, auxiliary plates 10 are symmetrically installed on the bottom of both sides of the connecting rod 2, the auxiliary plates 10 are slidably embedded in the limiting groove 3, circular grooves are symmetrically provided on the end faces of the auxiliary plate 10 and the annular strip 8 at equal intervals, balls 11 are slidably arranged in the grooves, and the balls 11 are respectively in contact with the inner wall of the limiting groove 3 and the outer wall of the connecting rod 2.

[0020] Through the above technical scheme: during installation, the connecting rod 2 is embedded from top to bottom into the connecting rod 4 between the two rotating plates 5, so that the auxiliary plate 10 is embedded into the limiting groove 3 through the auxiliary groove 12, and the auxiliary plate 10 is used to block the direct contact between the outer wall of the connecting rod 2 and the surface of the rotating plate 5. During operation, the movement of the end of the connecting rod 2 synchronously drives the auxiliary plate 10 to slide inside the limiting groove 3, and the ball 11 installed at the end of the auxiliary plate 10 is used to increase the sliding smoothness of the auxiliary plate 10 in the limiting groove 3, thereby eliminating the direct friction between the connecting rod 2 and the rotating plate 5, thereby solving the problem of repeated friction between the surfaces on both sides of the connecting rod 2 and the plate when the current crank-connecting rod 2 mechanism is in operation.

[0021] See also Figure 1-Figure 2 and Figure 4 As shown, the positioning structure also includes an annular strip 8 and an iron spring 9. The annular strip 8 is symmetrically arranged on both sides of the inner wall of the piston 1, and the rear end surface of the annular strip 8 is fixedly connected to the inner wall of the piston 1 through the iron spring 9. The connecting rod 2 is embedded between the two annular strips 8. An annular sliding groove 7 is opened on the outer wall of the connecting rod 2 and on one side relative to the annular strip 8. The ball 11 on the annular strip 8 is embedded in the sliding groove 7. An embedding groove 6 is opened in the middle of the surface of the connecting rod 4, and the connecting rod 2 is sleeved on the embedding groove 6.

[0022] Through the above technical scheme: during installation, the connecting rod 2 is embedded between the two annular strips 8 by squeezing the annular strips 8 on both sides. At this time, the ball 11 is also synchronously embedded in the sliding groove 7. The ball 11 is used to isolate the direct contact between the connecting rod 2 and the annular strip 8, and ensure that the connecting rod 2 can rotate normally. At the same time, the interlocking connection of the ball 11 can also assist in locating the position of the connecting rod 2, so that it is convenient to fix the connection on the piston 1 by interlocking the piston 1 pin later. When in use, the end of the connecting rod 2 is restricted by the elastic force of the iron spring 9, and the auxiliary plate 10 is used to improve the stable operation of the connecting rod 2. At the same time, the interlocking groove 6 is convenient for the operator to quickly locate the specific position of the connecting rod 2 when interlocking and installing the connecting rod 2, thereby improving the installation efficiency.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crank-connecting rod mechanism for a gasoline engine, characterized in that: The invention comprises a piston (1), a connecting rod (2), a crankshaft and a positioning structure, wherein the crankshaft comprises a rotating plate (5) and a connecting rod (4), wherein the rotating plates (5) are connected via the connecting rod (4), wherein the connecting rod (4) and the piston (1) are movably connected via the connecting rod (2), and a positioning structure is provided at the connection between the connecting rod (2), the connecting rod (4) and the piston (1), wherein the positioning structure is used to control the sliding distance of the connecting rod (2) on the connecting rod (4).

2. A gasoline engine crank-connecting rod mechanism according to claim 1, characterized in that: The positioning structure comprises an auxiliary groove (12), a limiting groove (3) and an auxiliary plate (10); a limiting groove (3) is provided on the side wall of the rotating plate (5) and located above the connecting rod (4); the limiting groove (3) is arc-shaped, and an auxiliary groove (12) is provided at the top center of the limiting groove (3); auxiliary plates (10) are symmetrically installed at the bottom of both sides of the connecting rod (2); and the auxiliary plates (10) are slidably embedded in the limiting groove (3).

3. A crank-connecting rod mechanism for a gasoline engine according to claim 2, characterized in that: A fitting groove (6) is provided in the middle of the surface of the connecting rod (4), and the connecting rod (2) is sleeved on the fitting groove (6).

4. A crank-connecting rod mechanism for a gasoline engine according to claim 2, characterized in that: The positioning structure also includes an annular strip (8) and an iron spring (9); the annular strip (8) is symmetrically arranged on both sides of the inner wall of the piston (1); the rear end surface of the annular strip (8) is fixedly connected to the inner wall of the piston (1) via the iron spring (9); and the connecting rod (2) is embedded between the two annular strips (8).

5. A crank-connecting rod mechanism for a gasoline engine according to claim 4, characterized in that: Circular grooves are symmetrically provided at equal intervals on the end surfaces of the auxiliary plate (10) and the annular strip (8), and balls (11) are slidably arranged in the grooves. The balls (11) are in contact with the inner wall of the limiting groove (3) and the outer wall of the connecting rod (2), respectively.

6. A crank-connecting rod mechanism for a gasoline engine according to claim 5, characterized in that: An annular sliding groove (7) is provided on the outer wall of the connecting rod (2) and on one side opposite to the annular strip (8), and the ball bearing (11) on the annular strip (8) is embedded in the sliding groove (7).

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