A kind of ratchet one-way device of pneumatic starter motor
A one-way device and ratchet-type technology, which is applied to the starting of the engine, the starting device with mechanical power storage, engine components, etc., can solve the problems of bearing bush wear and loss of effect, and achieve reduced wear and strong application adaptability , The effect of improving the service life
Active Publication Date: 2017-11-07
毅联实业(上海)有限公司
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Problems solved by technology
However, in the implementation of this method, high-speed sliding friction will be generated between the bearing pad and the bearing pad seat, so that the bearing pad will wear out quickly and lose its effect (such as figure 1 , figure 2 shown)
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[0014] Such as Figure 3-4 As shown, the specific embodiment adopts the following technical scheme: it includes the output shaft 1,
[0015] Lower ratchet 6, steel ball 4, movable sleeve 5, upper ratchet 7, spline shaft 17 and spring 20, the lower ratchet 6 is provided with an inner hole, the inner end surface is a slope, and the inner hole of the lower ratchet 6 is sleeved on the output shaft 1 and welded Fixed, a cavity is formed between the outer circle of the output shaft 1 and the inner hole of the lower ratchet 6, and one end of the movable sleeve 5 is also provided with a slope, which is also placed in the cavity and is axially slidably connected with the output shaft 1. There are several steel balls 4 arranged along the circumference of the output shaft, and placed between the lower ratchet 6 and the two slopes of the movable sleeve 5, and the other end of the movable sleeve 5 is placed in the stepped hole of the upper ratchet 7.
[0016] Preferably, the upper ratchet...
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The invention discloses a ratchet wheel type clutch of a gas starting motor, and relates to the technical field of clutches. An inner hole is formed in a lower ratchet wheel, the inner end face is a slope, the inner hole of the lower ratchet wheel is arranged on an output shaft in a sleeving manner to be fixedly welded, and a cavity is formed between the outer circle of the output shaft and the inner hole of the lower ratchet wheel; a slope is also arranged at one end of a movable sleeve, the movable sleeve is also arranged in the cavity, a plurality of steel balls which are distributed along the circumference of the output shaft are arranged in the cavity and arranged between the slope of the lower ratchet wheel and the slope of the movable sleeve, and the inner end face of the lower ratchet wheel is arranged to be the slope; the inner cavity of an upper ratchet wheel and the inner cavity of the lower ratchet wheel are provided with the steel balls and the movable sleeve, and centrifugal force generated by the steel balls during reversed transmission is converted into axial force through the slope of the movable sleeve to overcome spring force; the upper ratchet wheel is pushed open through the movable sleeve, so that when the upper ratchet wheel and the lower ratchet wheel conduct high-speed reversed transmission, ratchets are free of contact, a spring is free of vibration, and a ratchet wheel mechanism and the compressed spring are protected; and in the motion process, only rolling friction between the two slopes of the upper ratchet wheel and the lower ratchet wheel and the steel balls is generated, compared with sliding friction, abrasion is reduced, and the service life is prolonged.
Description
technical field [0001] The invention relates to a ratchet type one-way device of an air starter motor, belonging to the technical field of one-way devices. Background technique [0002] The ratchet type one-way device is a common part in the engine air starter motor. It has the characteristics of large transmission torque and non-slip forward transmission. When the air starter motor starts the engine, the one-way device drives forward, and the motor pinion drives the flywheel ring gear to rotate. When the engine is ignited and running, the pinion gear is not separated from the flywheel ring gear, and the reverse transmission occurs, and the ratchet slips at this time. , Cut off the transmission chain to protect the gas starter motor. To ensure a successful engine start, reverse drive must occur. When reverse transmission, the two ratchets of the one-way device will produce direct high-speed friction. Excessive reverse transmission will also cause the compression spring of ...
Claims
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IPC IPC(8): F02N15/06
CPCF02N15/06
Inventor 于传新黄志华
Owner 毅联实业(上海)有限公司