Motorcycle engine middle power output system

Abstract

A power output shaft is transversely arranged in the middle of the engine, a reversing mechanism is arranged on one side of the engine, and a power output angle joint gear is arranged on a shaft head at one end of the output shaft. A reversing output shaft, a reversing feather key sleeve, a reversing forward angle joint gear and a reversing backward angle joint gear are longitudinally arranged in the middle of the reversing mechanism, a stop lever is arranged above the reversing feather key sleeve, and the stop lever is provided with a shifting fork corresponding to the shifting fork groove; a transmission shaft and an output shaft are longitudinally arranged at the rear end of the engine; a transition gear is arranged at one end of the reversing output shaft, a high-speed transmission gear and a low-speed transmission gear are arranged at two ends of the middle of the transmission shaft, and a high-low-speed feather key sleeve and a shifting fork device are arranged between the high-speed transmission gear and the low-speed transmission gear. Engine oil and gear oil of the engine are separated, power output of the engine is ensured, maintenance and repair of a change gear structure of the engine are facilitated, meanwhile, a high-speed mode and a low-speed mode of the engine are provided, and the engine is larger in power and high in load in the low-speed mode.

Description

Technical Field

[0001] The invention relates to a motorcycle engine power output system, in particular to a motorcycle engine mid-mounted power output system. Background Art

[0002] Currently, most motorcycle engine transmissions utilize internal gears. Due to the numerous gears within the engine and the resulting interference with oil flow, existing internal gear transmissions exhibit high transmission intensity. Over long-term operation, these high transmission intensity and small gear contact surfaces lead to rapid wear and increased clearance. This results in unstable power output from the internal gear structure, noticeable jerking during shifting, and reduced engine power output. Furthermore, the mixing of engine oil and gear oil complicates maintenance and repair of the engine gear structure. Furthermore, existing structures only have a single transmission mode, making them incapable of adapting to diverse and complex conditions. In light of these factors, a mid-mounted power take-off system for motorcycle engines is proposed. Utility Model Content

[0003] The present invention aims to overcome the problems of existing internal gear structures, which suffer from the large number of gears within the engine and the interference of oil flow. The resulting small gear contact surface during operation leads to rapid wear and increased clearance, resulting in unstable power output from the internal gear structure, noticeable jerking during gear shifting, reduced engine power output, and hindering maintenance and repair of the engine gear structure. Furthermore, existing structures only have a single transmission mode and are unable to adapt to diverse and complex conditions. The present invention provides a mid-mounted power take-off system for a motorcycle engine. The present invention arranges the power take-off system outside the engine, through which the engine transmits power. This increases the gear contact surface, reduces gear wear, reduces transmission jerking, and stabilizes power output. The present invention separates engine oil and gear oil, ensuring engine power output, facilitating maintenance and repair of the engine's speed change gear structure, and extending the engine's service life. Furthermore, the present invention provides two engine speed modes: high-speed mode, which allows the engine to run faster and be more fuel-efficient, and low-speed mode, which allows the engine to deliver greater power and load capacity.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a motorcycle engine mid-mounted power output system, which is composed of: a power output shaft, a power output angular gear, a reversing output shaft, a reversing forward angular gear, a reversing sliding key sleeve, a reversing reverse angular gear, a reversing mechanism, a reversing output gear, a gear lever, a transmission shaft, a high-speed and low-speed sliding key sleeve, a transition gear, a high-speed transmission gear, a high-speed driven gear, a low-speed transmission gear, a low-speed driven gear, an output shaft, and an engine; the power output shaft is arranged horizontally in the middle of the engine, a reversing mechanism is arranged on one side of the engine, a shaft head at one end of the power output shaft is arranged to penetrate the reversing mechanism, and the output shaft A power output angular gear is provided on the shaft head at one end; a reversing output shaft is longitudinally provided in the middle of the reversing mechanism, a reversing sliding key sleeve is provided in the middle of the reversing output shaft, a reversing forward angular gear is provided at one end of the reversing sliding key sleeve, and a reversing reverse angular gear is provided at the other end thereof, which is arranged correspondingly to the power output angular gear through the reversing sliding key sleeve, a shift lever is provided above the reversing sliding key sleeve, the shift lever and the reversing sliding key sleeve are arranged crosswise, a shift fork groove is reserved on the reversing sliding key sleeve, and a shift fork is provided corresponding to the shift fork groove on the shift lever; a transmission shaft and an output shaft are longitudinally arranged in parallel at the rear end of the engine, the transmission shaft and the output shaft are longitudinally parallel, and bearings are respectively provided at both ends of the transmission shaft and the output shaft.

[0005] Working principle: When the engine needs to drive backward, the shift fork of the shift lever is manually used to shift the reversing sliding key sleeve to drive the reversing reverse angular gear. The reversing reverse angular gear is combined with the power output angular gear, and the reversing reverse angular gear drives the reversing wheel shaft to rotate;

[0006] When the engine needs to be driven forward normally, the shift fork of the shift lever is manually used to shift the reversing sliding key sleeve to drive the reversing forward angular connecting gear, and the reversing forward angular connecting gear is combined with the power output angular connecting gear, and the reversing forward angular connecting gear drives the reversing wheel shaft to rotate.

[0007] A reversing output gear is provided on the shaft head of the reversing output shaft, a transition gear is provided at one end of the reversing output shaft, the transition gear is engaged with the reversing output gear, a high-speed transmission gear and a low-speed transmission gear are provided at both ends of the middle part of the transmission shaft, a high-speed and low-speed sliding key sleeve is provided between the high-speed transmission gear and the low-speed transmission gear, and a shift fork device is provided on the high-speed and low-speed sliding key sleeve;

[0008] An output shaft is arranged on one side of the transmission shaft, and a high-speed driven gear and a low-speed driven gear are arranged at both ends of the middle part of the output shaft. The high-speed driven gear is engaged with the high-speed transmission gear, and the low-speed driven gear is engaged with the low-speed transmission gear.

[0009] Working principle: When the reversing output shaft rotates and the reversing output gear rotates, the reversing output gear drives the transition gear, transmission shaft, and low-speed transmission gear to rotate. At the same time, the low-speed transmission gear drives the low-speed driven gear to engage and drive the output shaft to rotate at a low speed.

[0010] When high-speed operation is required, the shift fork device is used to slide the sliding key sleeve toward the high-speed transmission gear, and the sliding key sleeve engages and rotates with the high-speed transmission gear, and the high-speed transmission gear drives the high-speed driven gear and the output shaft to rotate at high speed.

[0011] Beneficial effects: The present invention sets a power output system on the outside of the engine, and the engine is transmitted through the outer power output system, which increases the contact area of the gears, reduces gear wear, reduces transmission setbacks, stabilizes the power output, separates the engine oil and gear oil, ensures the power output of the engine, facilitates the maintenance and repair of the engine speed gear structure, and extends the service life of the engine; at the same time, it provides two engine modes, high speed and low speed. When using the high speed mode, the engine runs faster and saves more fuel, and in the low speed mode, the engine has greater power and a stronger load capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the final assembly structure;

[0014] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure;

[0015] Figure 3 yes Figure 1 A schematic diagram of a three-dimensional structure viewed from above;

[0016] Figure 1 、 2 , 3: power output shaft 1, power output angular gear 1-1, reversing output shaft 2, reversing forward angular gear 2-1, reversing sliding key sleeve 2-2, reversing reverse angular gear 2-3, reversing mechanism 3, reversing output gear 4, gear lever 5, transmission shaft 6, high and low speed sliding key sleeve 6-1, transition gear 7, high-speed transmission gear 8, high-speed driven gear 8-1, low-speed transmission gear 9, low-speed driven gear 9-1, output shaft 10, engine 11. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] A power output shaft 1 is horizontally arranged in the middle of the engine 11, and a reversing mechanism 3 is arranged on one side of the engine 11. The shaft head at one end of the power output shaft 1 is arranged to penetrate the reversing mechanism 3, and a power output angular gear 1-1 is arranged on the shaft head at one end of the output shaft 1; a reversing output shaft 2 is longitudinally arranged in the middle of the reversing mechanism 3, and a reversing sliding key sleeve 2-2 is arranged in the middle of the reversing output shaft 2. A reversing forward angular gear 2-1 is arranged at one end of the reversing sliding key sleeve 2-2, and a reversing reverse angular gear 2-3 is arranged at the other end, which is arranged corresponding to the power output angular gear 1-1 through the reversing sliding key sleeve 2-2. A shift rod 5 is arranged above the reversing sliding key sleeve 2-2, and the shift rod 5 is cross-arranged with the reversing sliding key sleeve 2-2. A shift fork groove is reserved on the reversing sliding key sleeve 2-2, and a shift fork is arranged on the shift rod 5 corresponding to the shift fork groove; a transmission shaft 6 and an output shaft 10 are longitudinally arranged in parallel at the rear end of the engine 11. The transmission shaft 6 and the output shaft 10 are longitudinally parallel, and bearings are respectively provided at both ends of the transmission shaft 6 and the output shaft 10.

[0019] A reversing output gear 4 is provided at the shaft head of the reversing output shaft 2, a transition gear 7 is provided at one end of the reversing output shaft 2, and the transition gear 7 is engaged with the reversing output gear 4. A high-speed transmission gear 8 and a low-speed transmission gear 9 are provided at both ends of the middle part of the transmission shaft 6, and a high-speed and low-speed sliding key sleeve 6-1 is provided between the high-speed transmission gear 8 and the low-speed transmission gear 9, and a shift fork device is provided on the high-speed and low-speed sliding key sleeve 6-1.

[0020] An output shaft 10 is provided on one side of the transmission shaft 6, and a high-speed driven gear 8-1 and a low-speed driven gear 9-1 are provided at both ends of the middle part of the output shaft 10. The high-speed driven gear 8-1 is meshed with the high-speed transmission gear 8, and the low-speed driven gear 9-1 is meshed with the low-speed transmission gear 9.

Claims

1. A motorcycle engine mid-mounted power output system, comprising: a power output shaft (1), a power output angular gear (1-1), a reversing output shaft (2), a reversing forward angular gear (2-1), a reversing sliding key sleeve (2-2), a reversing reverse angular gear (2-3), a reversing mechanism (3), a reversing output gear (4), a shift lever (5), a transmission shaft (6), a high-speed and low-speed sliding key sleeve (6-1), a transition gear (7), a high-speed transmission gear (8), a high-speed driven gear (8-1), a low-speed transmission gear (9), a low-speed driven gear (9-1), an output shaft (10), and an engine (11); characterized in that: A power output shaft (1) is horizontally arranged in the middle of the engine (11), a reversing mechanism (3) is arranged on one side of the engine (11), a shaft head at one end of the power output shaft (1) is arranged to penetrate the reversing mechanism (3), and a power output angle gear (1-1) is arranged on the shaft head at one end of the power output shaft (1); a reversing output shaft (2) is longitudinally arranged in the middle of the reversing mechanism (3), a reversing sliding key sleeve (2-2) is arranged in the middle of the reversing output shaft (2), a reversing forward angle gear (2-1) is arranged at one end of the reversing sliding key sleeve (2-2), and a reversing reverse angle gear is arranged at the other end thereof. (2-3), a reversing key sleeve (2-2) is arranged correspondingly to the power output angle gear (1-1), a shift lever (5) is arranged above the reversing key sleeve (2-2), the shift lever (5) and the reversing key sleeve (2-2) are arranged crosswise, a shift fork groove is reserved on the reversing key sleeve (2-2), and a shift fork is arranged in the shift lever (5) corresponding to the shift fork groove; a transmission shaft (6) and an output shaft (10) are arranged longitudinally and in parallel at the rear end of the engine (11), the transmission shaft (6) and the output shaft (10) are arranged longitudinally and in parallel, and bearings are respectively arranged at both ends of the transmission shaft (6) and the output shaft (10).

2. A motorcycle engine mid-mounted power take-off system according to claim 1, characterized in that: A reversing output gear (4) is provided at the shaft head of the reversing output shaft (2), a transition gear (7) is provided at one end of the reversing output shaft (2), the transition gear (7) is engaged with the reversing output gear (4), a high-speed transmission gear (8) and a low-speed transmission gear (9) are provided at both ends of the middle portion of the transmission shaft (6), a high-speed and low-speed sliding key sleeve (6-1) is provided between the high-speed transmission gear (8) and the low-speed transmission gear (9), and a shift fork device is provided on the high-speed and low-speed sliding key sleeve (6-1).

3. The motorcycle engine mid-mounted power take-off system according to claim 1, characterized in that: An output shaft (10) is provided on one side of the transmission shaft (6), and a high-speed driven gear (8-1) and a low-speed driven gear (9-1) are provided at both ends of the middle portion of the output shaft (10). The high-speed driven gear (8-1) is engaged with the high-speed transmission gear (8), and the low-speed driven gear (9-1) is engaged with the low-speed transmission gear (9).

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