A double star transmission

Abstract

The present invention relates to the technical field of transmission equipment, and discloses a double star transmission, including a central shaft, an eccentric shaft, a bearing, a rotating body, a steel ball fixing ring, a steel ball, a steel ball outer ring and a machine base; an eccentric through hole is provided on the eccentric shaft, the central shaft is placed in the eccentric through hole, each eccentric shaft is provided with a bearing, each bearing is provided with a rotating body, a steel ball fixing ring is provided between the rotating bodies, each steel ball fixing ring is provided with a pair of steel ball mounting holes, the steel ball mounting holes are relatively arranged, a steel ball is installed in the steel ball mounting hole, a steel ball outer ring is provided at the steel ball position, a steel ball outer ring is provided with a steel ball track, the steel ball is placed on the steel ball track, the machine base is provided with an annular mounting hole, and the steel ball outer ring is embedded in the annular mounting hole. The present invention realizes coaxial different speeds by setting an eccentric structure, and high speed inertia becomes low speed, thereby achieving greater load bearing and energy saving.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission equipment, in particular to a transmission device. Background Art

[0002] The transmission is an intermediate device that transmits the power of the power device to the working mechanism. For traditional transmissions, a gear transmission structure is usually used as the transmission.

[0003] For example, the patent document CN204069800U discloses a harvester gearbox transmission, including a first shaft, a second shaft, a third shaft, a left half shaft and a right half shaft installed in a shell, a first shaft is installed with a normally engaged driving gear and a reverse driving gear; the second shaft is a gear shaft, on which a second gear driving gear and a first gear driving gear are arranged, a third gear passive gear is installed on the second shaft on the left side of the second gear driving gear, and a normally engaged passive gear is installed on the second shaft between the second gear driving gear and the first gear driving gear; the third gear passive gear, the second gear passive gear, the first gear passive gear and the reverse gear passive gear are installed on the three shafts from left to right in sequence; a differential assembly is installed between the left half shaft and the right half shaft.

[0004] The transmission ratio between the gears of the above-mentioned gearbox transmission is fixed, and the load capacity of the transmission shaft is fixed. When the load operation state suddenly changes from a high gear to a low gear, the torque of the transmission shaft increases, which is very likely to damage the power source and the transmission shaft. At the same time, the transmission of the gear transmission structure cannot provide a larger load, which greatly limits its scope of use. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a double-star transmission, whose main purpose is to design a transmission with an eccentric structure, through an eccentric shaft, a steel ball fixing ring, a rotating body, a steel ball outer ring and a steel ball. When the central shaft rotates, the eccentric shaft, the steel ball fixing ring, the steel ball and the steel ball outer ring fixed on the central shaft form a rotation and rolling at a certain angle. When the central shaft rotates one circle, the steel ball rolls along the inner wall of the steel ball outer ring, and at the same time pushes the rotating body to rotate, accelerates the rotation of the rotating body, and forms coaxial rotation at different speeds. The high-speed motion of the rotating body has inertia. When the rotating body converts to low speed, the load capacity of the central shaft is increased.

[0006] Another object of the present invention is to provide a double star transmission, which connects a flywheel to the outside of the rotating body. Since the mass of the flywheel is greater than that of the rotating body, the inertia generated during high-speed movement is greater, thereby increasing the load capacity of the central axis.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A double-star transmission, which comprises a central shaft, an eccentric shaft, a bearing, a rotating body, a steel ball fixing ring, a steel ball, a steel ball outer ring and a machine base; an eccentric through hole is provided on the eccentric shaft, the central shaft is placed in the eccentric through hole, a bearing is sleeved on each of the two ends of the eccentric shaft, a rotating body is sleeved on each of the bearings, a steel ball fixing ring is arranged outside between the two rotating bodies, the outer wall of the rotating body does not contact the inner wall of the steel ball fixing ring, a pair of steel ball mounting holes are provided on the steel ball fixing ring at each rotating body position, the steel ball mounting holes are arranged relatively, the steel balls are installed in the steel ball mounting holes, the steel ball outer ring is provided at each steel ball position, a circle of steel ball track is provided on the inner wall of the steel ball outer ring, the steel balls are placed on the steel ball track, a through annular mounting hole is provided at the center of the upper end of the machine base, and the steel ball outer ring is respectively embedded in the two end positions of the annular mounting hole.

[0009] In the present invention, an eccentric shaft is provided in combination with a steel ball fixing ring, a steel ball outer ring and a steel ball. When the central shaft rotates, the rotating body and the steel ball outer ring rotate and roll at a certain angle. When the central shaft rotates, the steel ball rolls along the outer wall of the rotating body to push the rotating body to rotate, thereby forming coaxial but different speeds. Since the rotating body has inertia when rotating at high speed, the load capacity of the central shaft is increased. When the operating state of the motion mechanism connected to the central shaft changes, the central shaft can withstand a larger load.

[0010] Furthermore, threaded holes are provided on both sides of the lower end of the base.

[0011] Furthermore, annular bosses are provided at both ends of the annular mounting hole, and the outer ring of the steel ball is mounted on the annular bosses.

[0012] Furthermore, a connecting hole is provided on the end surface of each rotating body, a flywheel is mounted on the connecting hole, a circumferential edge of the flywheel extends to the machine base, and the flywheels at both ends form a closed space with the machine base.

[0013] In the present invention, a flywheel is further connected to the rotating body. Since the mass of the flywheel is greater than that of the rotating body, the torque generated by the central shaft is greater when the high-speed rotation is decelerated and transmitted to the central shaft, thereby improving the load capacity of the central shaft.

[0014] Furthermore, a first keyway is provided on the circumference of the central shaft, a second keyway matching the first keyway is provided on the inner wall of the eccentric shaft, and the central shaft matches the second keyway by installing a key in the first keyway.

[0015] Furthermore, an oil inlet hole is provided at the upper portion of the machine base, and an oil outlet hole is provided at the lower portion of the machine base.

[0016] The present invention is provided with an eccentric shaft, a rotating body, a steel ball fixing ring, a steel ball outer ring and a steel ball. When the central shaft rotates, the rotating body and the steel ball outer ring form a certain angle of rotation and rolling. When the central shaft rotates, the steel ball rolls along the inner wall of the steel ball outer ring. At the same time, the steel ball pushes the rotation of the rotating body. The rotating body generates inertia when running at high speed, so that the high-speed inertia decelerates and transmits force to the central shaft to generate a strong torque, thereby improving the load capacity of the central shaft and being able to effectively cope with the change in the motion state of the load. At the same time, in order to increase the load capacity of the central shaft, a flywheel is connected to the rotating body. Since the mass of the flywheel is larger than that of the rotating body, the inertia generated during high-speed rotation is larger, which further increases the load capacity of the central shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is an exploded schematic diagram of the present invention.

[0019] Figure 3 It is a cutaway schematic diagram of the present invention.

[0020] Figure 4 It is a structural diagram of the base.

[0021] Figure 5 This is a schematic diagram of the structure of the machine base.

[0022] Figure 6 It is a schematic diagram of the structure of the flywheel and the rotating body.

[0023] Figure 7 Schematic diagram of the assembly structure of the central shaft and the eccentric shaft.

[0024] Explanation of the accompanying figures: 1. Central shaft; 2. Eccentric shaft; 3. Bearing; 4. Rotating body; 5. Steel ball fixing ring; 6. Steel ball; 7. Steel ball outer ring; 8. Machine base; 9. Eccentric through hole; 10. Steel ball mounting hole; 11. Steel ball track; 12. Annular mounting hole; 13. Threaded hole; 14. Annular boss; 15. Connecting hole; 16. Flywheel; 17. First keyway; 18. Second keyway; 19. Oil inlet hole; 20. Oil outlet hole. DETAILED DESCRIPTION

[0025] See also Figure 1-3As shown, a double star transmission implemented by the present invention comprises a central shaft 1, an eccentric shaft 2, a bearing 3, a rotating body 4, a steel ball fixing ring 5, a steel ball 6, a steel ball outer ring 7 and a base 8; the eccentric shaft 2 is provided with an eccentric through hole 9, the central shaft 1 is placed in the eccentric through hole 9, the two ends of the eccentric shaft 2 are respectively sleeved with a bearing 3, each bearing 3 is sleeved with a rotating body 4, the steel ball fixing ring 5 is arranged between the two rotating bodies 4, and the outer wall of the rotating body 4 is connected to the steel ball fixing ring 5 do not contact, the steel ball fixing ring 5 is provided with a pair of steel ball mounting holes 10 at each position of the rotating body 4, the steel ball mounting holes 10 are arranged opposite to each other, the steel balls 6 are arranged in the steel ball mounting holes 10, each of the steel balls 6 is provided with a steel ball outer ring 7, the inner wall of the steel ball outer ring 7 is provided with a circle of steel ball tracks 11, the steel balls 6 are placed on the steel ball tracks 11, a through annular mounting hole 12 is provided at the center of the upper end of the machine base 8, and the steel ball outer ring 7 is respectively embedded in the positions at both ends of the annular mounting hole 12

[0026] Since the traditional transmission adopts gear structure transmission, due to its fixed transmission ratio, it is impossible to drive a larger load or the load's running state changes suddenly, which easily damages the power source. In this regard, the present invention proposes an eccentric structure transmission, and its specific use principle is as follows: one end of the central shaft 1 is connected to the power source. When the central shaft 1 rotates, the rotating body 4 and the steel ball outer ring 7 rotate at a certain angle. When the central shaft 1 rotates one circle, the steel ball 6 rolls along the steel ball track 11 of the steel ball outer ring 7, and at the same time pushes the rotating body 4, thereby forming a coaxial but different speed; since the rotating eccentric shaft 2 is respectively provided with a rotating body 4 at both ends, the steel ball fixing ring 5 is always closely combined with the steel ball 6 and the steel ball track 11 of the steel ball outer ring 7, forming the steel balls 6 at both ends rotating at high speed in the steel ball outer ring 7, and at the same time pushing the rotation of the rotating body 4, the rotating body 4 generates inertia during high-speed operation, and the high-speed inertia decelerates and transmits force to the central shaft 1, so that the central shaft 1 generates a strong torque to achieve the purpose of energy saving. In the synchronous and in-phase rotation, the steel ball is always in the steel ball track 11, and there is no slipping phenomenon.

[0027] like Figure 4 As shown, threaded holes 13 are provided on both sides of the lower end of the base 8. The threaded holes 13 are provided on the base 8 to facilitate the installation and fixing of the base 8 by bolts.

[0028] An annular boss 14 is provided at both ends of the annular mounting hole 12, and the steel ball outer ring 7 is mounted on the annular boss 14. The annular boss 14 provides installation and positioning of the steel ball outer ring 7 during the installation process, ensuring that the operation process is stable and does not deflect.

[0029] like Figure 6As shown, a connection hole 15 is provided on the end face of each rotating body 4, and a flywheel 16 is installed on the connection hole 15. The circumferential edge of the flywheel 16 extends to the machine base 8, and the flywheel 16 at both ends forms a closed space with the machine base 8.

[0030] In order to further improve the load capacity of the central shaft 1, a flywheel 16 is provided to be connected to the rotating body 4. The mass of the flywheel 16 is larger than that of the rotating body 4, so that the inertia generated by the flywheel during high-speed rotation is larger. When the high-speed inertia is decelerated and the force is transmitted to the central shaft 1, the central shaft 1 can generate a larger torque.

[0031] like Figure 7 As shown, a first keyway 17 is provided on the circumference of the central shaft 1, and a second keyway 18 matching the first keyway 17 is provided on the inner wall of the eccentric shaft 2. The central shaft 1 matches the second keyway 18 by installing a key in the first keyway 17. The present invention specifically provides a connection method between the central shaft 1 and the eccentric shaft 2, and the two are connected by a key to achieve a tight combination.

[0032] like Figure 4 and Figure 5 As shown, an oil inlet hole 19 is provided at the upper part of the base 8, and an oil outlet hole 20 is provided at the lower part of the housing 7. The oil inlet hole 19 is connected to the oil inlet pipe of the external oil pump, and the oil outlet hole 20 is connected to the oil return pipe of the external oil pump. When the external oil pump delivers oil, the oil lubricates the inner wall of the steel ball outer ring 7 under the rolling of the steel ball 6, and the oil flows downward to the position of the oil outlet hole 20 under the action of gravity, and is recovered through the oil return pipe of the external oil pump, and so on.

[0033] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A double star transmission, characterized in that: The double star transmission comprises a central shaft, an eccentric shaft, a bearing, a rotating body, a steel ball fixing ring, steel balls, a steel ball outer ring and a machine base; An eccentric through hole is provided on the eccentric shaft, and the central shaft is placed in the eccentric through hole. A bearing is sleeved on each of the two ends of the eccentric shaft, and a rotating body is sleeved on each of the bearings. A steel ball fixing ring is provided between the two rotating bodies, and the outer wall of the rotating body does not contact the inner wall of the steel ball fixing ring. A pair of steel ball mounting holes are provided on the steel ball fixing ring at each rotating body position, and the steel ball mounting holes are arranged relatively to each other. The steel balls are placed in the steel ball mounting holes, and each steel ball position is provided with a steel ball outer ring. The inner wall of the steel ball outer ring is provided with a circle of steel ball tracks, and the steel balls are placed on the steel ball tracks. A through annular mounting hole is provided at the center of the upper end of the machine base, and the steel ball outer ring is respectively embedded in the two end positions of the annular mounting hole; Annular bosses are provided at both ends of the annular mounting hole, and the outer ring of the steel ball is mounted on the annular bosses; A connecting hole is provided on the end surface of each rotating body, a flywheel is installed on the connecting hole, the circumferential edge of the flywheel extends to the machine base, and the flywheels at both ends and the machine base form a closed space; A first keyway is provided on the circumference of the central shaft, a second keyway matched with the first keyway is provided on the inner wall of the eccentric shaft, and the central shaft matches with the second keyway by installing a key in the first keyway.

2. The double star transmission according to claim 1, characterized in that: Threaded holes are provided on both sides of the lower end of the machine base.

3. The double star transmission according to claim 1, characterized in that: An oil inlet hole is provided at the upper part of the machine base, and an oil outlet hole is provided at the lower part of the machine base.

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