Swash plate engine transmission mechanism

Abstract

The swash plate engine transmission mechanism comprises a swash plate, a transmission shaft, a piston and a machine body, a connecting rod and a hinged shaft pin assembly are arranged in the piston, the piston is arranged in the machine body, the connecting rod 5 and the hinged shaft pin assembly 6 are of an integrally-formed structure and are connected with the swash plate 1, shells are arranged at the two ends of the transmission shaft, and the transmission shaft penetrates through the swash plate. An inclination angle is formed between the swash plate and the transmission shaft, the swash plate comprises an outer ring and an inner ring, and a plurality of balls are arranged between the outer ring and the inner ring. The transmission mechanism has the beneficial effects that the swash plate is rotationally connected with the transmission shaft, the transmission mechanism is interchanged between rotary motion and reciprocating motion through a hinge structure of the hinge shaft pin assembly and the connecting rod, the inner plate and the outer plate replace traditional sliding motion through rolling motion, the motion stress surface is increased, local stress is reduced, and the service life of the transmission mechanism is prolonged. The bad phenomenon that the swash plate is seriously abraded due to concentrated stress points is overcome and solved, and the stability of a transmission system is guaranteed.

Description

Technical Field

[0001] The invention mainly relates to the technical field of automobile engines, and in particular to a swash plate engine transmission mechanism. Background Art

[0002] The characteristic of the swash plate engine is that it rationally combines multiple elements such as piston movement, swash plate rotation, timing gear, slide valve valve system or cam, valve, etc. into a power cycle system. The specific description is as follows: the piston directly pushes the swash plate to rotate through the connecting rod, and the working motion of the piston is controlled by a pair of timing bevel gears with a speed ratio of 2:1 that rotate synchronously with the main shaft and two cams on the large bevel gear shaft to control the opening and closing of the intake and exhaust valves, completing the power cycle of intake, compression, detonation and exhaust according to the rules.

[0003] The inventor discovered the following defects during the operation of the specific embodiment: The swash plate engine has been around for a long time, but it is not widely used and has many shortcomings in its structure. The swash plate transmission mechanism on the market uses a technical solution that directly fixes the swash plate to the main shaft. This technical solution causes the swash plate and the main shaft to rotate synchronously, causing the piston push rod connected to the swash plate to be damaged due to rotational wear. Specifically, the piston push rod and the swash plate adopt sliding contact, resulting in a smaller force surface and more intense friction between them.

[0004] The sliding valve valve system used in traditional engines and the transmission direction of the crankshaft are inconsistent, which increases the overall structural difficulty of the transmission system, the structure is relatively complex, and increases uncontrollable factors.

[0005] In view of the above defects, the present invention proposes to replace the sliding contact structure between the piston push rod and the swash plate with a ball bearing transmission structure to reduce the high friction movement between the piston push rod and the swash plate.

[0006] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Summary of the invention

[0007] 1. Technical problem to be solved by the invention: The present invention provides a swash plate engine transmission mechanism to solve the technical problems existing in the above-mentioned background technology.

[0008] 2. Technical solution: To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a swash plate engine transmission mechanism, comprising a swash plate, a transmission shaft, a piston and a body, wherein a connecting rod and a hinge pin assembly are arranged in the piston, the piston is arranged in the body, the connecting rod and the hinge pin assembly are an integrally formed structure and are connected to the swash plate, a housing is provided at both ends of the transmission shaft, the transmission shaft passes through the swash plate, an inclination angle is formed between the swash plate and the transmission shaft, the swash plate comprises an outer ring and an inner ring, and a plurality of balls are arranged between the outer ring and the inner ring.

[0009] Furthermore, the inner wall of the inner ring is fixedly connected to the transmission shaft.

[0010] Furthermore, the outer ring is rotatably connected to the inner ring via a plurality of the balls, and the outer ring and the inner ring are interlocked.

[0011] Furthermore, both ends of the transmission shaft pass through the housing, bearings are provided at both ends of the transmission shaft, and the bearings are arranged on the housing, and the transmission shaft is connected to the housing through the bearings.

[0012] Furthermore, the hinge pin assembly includes a pull ear, a universal joint fork is provided at the lower end of the pull ear, the pull ear and the universal joint fork are connected by a cross pin, and the upper end of the pull ear is fixedly connected to the outer ring.

[0013] Furthermore, one end of the connecting rod is fixedly connected to the universal joint fork, and the other end of the connecting rod away from the hinge pin assembly is provided with a pin shaft.

[0014] Furthermore, the connecting rod is arranged in the piston and is located on the same axis as the piston, and the connecting rod is connected to the piston through the pin.

[0015] Furthermore, the piston includes two movable ends, which are fixedly connected by two linkage rods, the hinge pin assembly is sleeved on the linkage rod and movably connected to the linkage rod, and the positioning pin shaft passes through the connecting rod and the movable end respectively.

[0016] Furthermore, the two shells are fixedly connected to the body.

[0017] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is reasonably designed. The swash plate and the transmission shaft are rotationally connected, and the transmission mechanism is interchangeable between rotational motion and reciprocating motion through the hinge structure of the hinge pin assembly and the connecting rod. The inner plate and the outer plate replace the traditional sliding motion with rolling motion, which increases the motion force surface and reduces the local force. The undesirable phenomenon that the swash plate is severely worn due to the concentrated force points is overcome and solved, thereby ensuring the stability of the transmission system.

[0018] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the local structure of the present invention.

[0020] Reference numerals: 1. Swash plate; 101. Outer ring; 102. Inner ring; 103. Ball; 2. Transmission shaft; 3. Piston; 301. Moving end; 302. Linkage rod; 4. Machine body; 5. Connecting rod; 501. Pin; 6. Hinge pin assembly; 601. Pull ear; 602. Universal joint fork; 603. Cross pin; 7. Housing; 8. Bearing. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0025] Refer to the attached Figure 1-3 A swash plate engine transmission mechanism comprises a swash plate 1, a transmission shaft 2, a piston 3 and a body 4, a connecting rod 5 and a hinge pin assembly 6 are arranged in the piston 3, the piston 3 is arranged in the body 4, the connecting rod 5 and the hinge pin assembly 6 are an integrally formed structure and are connected to the swash plate 1, housings 7 are arranged at both ends of the transmission shaft 2, the transmission shaft 2 passes through the swash plate 1, and there is an inclination angle between the swash plate 1 and the transmission shaft 2, the swash plate 1 comprises an outer ring 101 and an inner ring 102, and a plurality of balls 103 are arranged between the outer ring 101 and the inner ring 102.

[0026] The inner wall of the inner ring 102 is fixedly connected to the transmission shaft 2, and the outer ring 101 is rotatably connected to the inner ring 102 through multiple balls 103. The outer ring 101 and the inner ring 102 are interlocked, and there is lubricating oil between the outer ring 101, the inner ring 102, and the balls 103 to ensure smooth rotation of the inner ring 102.

[0027] Both ends of the transmission shaft 2 pass through the shell 7. Bearings 8 are provided at both ends of the transmission shaft 2, and the bearings 8 are arranged on the shell 7. The transmission shaft 2 is connected to the shell 7 through the bearings 8. The bearings 8 at both ends of the transmission shaft 2 achieve a certain floating space between the transmission shaft 2 and the shell 7 to avoid wear with the shell 7.

[0028] The hinge pin assembly 6 includes a pull ear 601, and a universal joint fork 602 is provided at the lower end of the pull ear 601. The pull ear 601 and the universal joint fork 602 are connected by a cross pin 603. After the universal joint fork 602 and the pull ear 601 are connected, multi-angle swing can be achieved. The upper end of the pull ear 601 is fixedly connected to the outer ring 101, and the connecting rod 5 moves up and down with the swash plate 1 through the hinge pin assembly 6 and swings left and right at the same time.

[0029] One end of the connecting rod 5 is fixedly connected to the universal joint fork 602, and the other end of the connecting rod 5 away from the hinge pin assembly 6 is provided with a pin shaft 501, which is respectively inserted into the inner wall of the connecting rod 5 and the piston 3 to form an interference fit to ensure the stability of the connecting rod 5 and the piston 3.

[0030] The connecting rod 5 is disposed in the piston 3 and is located on the same axis as the piston 3 . The connecting rod 5 is connected to the piston 3 via a pin 501 .

[0031] The piston 3 includes two movable ends 301, which are fixedly connected by two linkage rods 302. The hinge pin assembly 6 is sleeved on the linkage rod 302 and movably connected to the linkage rod 302. The positioning pin shaft 501 passes through the connecting rod 5 and the movable end 301 respectively.

[0032] The two shells 7 are fixedly connected to the machine body 4 . The two shells 7 have the same structure and are used to support and fix the transmission shaft 2 .

[0033] In this embodiment, the two ends of the transmission shaft 2 are connected to the housing 7 and the swash plate 1 through bearings 8, and the transmission shaft 2 and the piston 3 are kept parallel. In actual use, the ends of the transmission shaft 2 are provided with timing gears and sliding valves, and the timing gears are driven by the sliding valves to control the intake and exhaust of the sliding valves. The two ends of the transmission shaft 2 are axially positioned by bearings 8.

[0034] In this embodiment, the swash plate 1 is fixed on the hinge pin assembly 6, the transmission shaft 2 is fixedly connected to the inner ring 102 in the swash plate 1, and there is an inclination angle between the inner ring 102 and the transmission shaft 2. When the transmission shaft 2 rotates, it drives the swash plate 1 to realize the motion trajectory.

[0035] In this embodiment, one end of the connecting rod 5 is connected to the main body of the swash plate 1 through the hinge pin assembly 6. Specifically, one end of the connecting rod 5 is fixedly connected to the universal joint fork 602 on the hinge pin assembly 6, and the other end is connected to the piston 3 through the pin 501, which is kept parallel to the piston 3 and is arranged close to the inner wall of the piston 3. The lower end of the connecting rod 5 moves forward and backward while moving up and down with the transmission shaft 2. The transmission shaft 2 drives the inner ring 102 of the swash plate 1 to make the fixed outer ring 101 move up and down through the ball 103.

[0036] In this embodiment, the upper end of the hinge pin assembly 6 is fixedly connected to the swash plate 1. When the swash plate 1 moves up and down through the transmission shaft 2, the hinge pin assembly 6 is driven to move simultaneously.

[0037] It should be noted that, in the actual installation process, the shell 7 and the body 4 have a protective shell on the outside. In another embodiment, according to actual needs, a layout structure in which one or more pistons can be driven with the transmission shaft as the center can be used in combination.

[0038] In summary, the optimized swash plate structure adopts a sliding valve valve distribution system to form an efficient engine solution. First, the sliding valve mechanism has a simple structure, but the transmission direction of the crankshaft is not consistent, which increases the overall structural difficulty of the transmission system. The structure is relatively complex and increases uncontrollable factors. Secondly, the transmission mode of the drive shaft and the swash plate is mutual sliding, and the force-bearing area of ​​the swash plate and the drive shaft is small, which is prone to severe wear under local force. In the present technical solution, the swash plate 1 is rotationally connected to the transmission shaft 2 through the ball bearings 103, and the transmission mechanism is interchangeable between rotational motion and reciprocating motion through the integral structure of the hinge pin assembly 6 and the connecting rod 5. The inner plate 102 and the outer plate 101 replace the traditional sliding motion with rolling motion, thereby increasing the motion force-bearing surface and reducing local force, thus overcoming and solving the undesirable phenomenon that the swash plate 1 suffers from severe wear due to concentrated force points, and ensuring the stability of the transmission system.

[0039] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A swash plate engine transmission mechanism, characterized in that: The invention comprises a swash plate (1), a transmission shaft (2), a piston (3) and a machine body (4); a connecting rod (5) and a hinge pin assembly (6) are arranged in the piston (3); the piston (3) is arranged in the machine body (4); the connecting rod (5) and the hinge pin assembly (6) are an integrally formed structure and are connected to the swash plate (1); housings (7) are arranged at both ends of the transmission shaft (2); the transmission shaft (2) passes through the swash plate (1); an inclination angle is formed between the swash plate (1) and the transmission shaft (2); the swash plate (1) comprises an outer ring (101) and an inner ring (102); a plurality of balls (103) are arranged between the outer ring (101) and the inner ring (102).

2. A swash plate engine transmission mechanism according to claim 1, characterized in that: The inner wall of the inner ring (102) is fixedly connected to the transmission shaft (2).

3. A swash plate engine transmission mechanism according to claim 1, characterized in that: The outer ring (101) is rotatably connected to the inner ring (102) via a plurality of the balls (103), and the outer ring (101) and the inner ring (102) are interlocked.

4. A swash plate engine transmission mechanism according to claim 1, characterized in that: Both ends of the transmission shaft (2) pass through the housing (7), bearings (8) are provided at both ends of the transmission shaft (2), and the bearings (8) are arranged on the housing (7), and the transmission shaft (2) is connected to the housing (7) via the bearings (8).

5. A swash plate engine transmission mechanism according to claim 1, characterized in that: The hinge pin assembly (6) comprises a pull ear (601), a universal joint fork (602) is provided at the lower end of the pull ear (601), the pull ear (601) and the universal joint fork (602) are connected via a cross pin (603), and the upper end of the pull ear (601) is fixedly connected to the outer ring (101).

6. A swash plate engine transmission mechanism according to claim 5, characterized in that: One end of the connecting rod (5) is fixedly connected to the universal joint fork (602), and the other end of the connecting rod (5) away from the hinge pin assembly (6) is provided with a pin shaft (501).

7. A swash plate engine transmission mechanism according to claim 6, characterized in that: The connecting rod (5) is arranged in the piston (3) and is located on the same axis as the piston (3); the connecting rod (5) is connected to the piston (3) via the pin shaft (501).

8. The swash plate engine transmission mechanism according to claim 1, characterized in that: The piston (3) comprises two movable end portions (301), the two movable end portions (301) being fixedly connected via two linkage rods (302), the hinge pin assembly (6) being sleeved on the linkage rods (302) and movably connected to the linkage rods (302), and the pin shaft (501) respectively passing through the connecting rod (5) and the movable end portions (301).

9. A swash plate engine transmission mechanism according to claim 1, characterized in that: The two shells (7) are fixedly connected to the machine body (4).

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