Hedge trimmer transmission and cutting mechanism driven by planetary gears
A technology of planetary gear transmission and shearing mechanism, which is applied in the direction of gear transmission, transmission, agricultural machinery and implements, etc., can solve the problems of aggravating the instability of the reciprocating motion of the blade, unfavorable for manual hand-held operation, and high movement frequency. Small vibration, compact structure, and the effect of improving cutting speed
Active Publication Date: 2018-11-27
ZHEJIANG SCI-TECH UNIV
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Problems solved by technology
Since the frequency of shear reciprocating motion is generally 1500-1900 times / min, and the motion frequency is high, the acceleration of the crank slider mechanism used on traditional hedge trimmers in the state of high-speed reciprocating motion changes greatly, resulting in large vibration and noise. It exacerbates the instability of the reciprocating motion of the blade, which is not conducive to manual hand-held operation
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[0028] The present invention will be further described below in conjunction with the accompanying drawings.
[0029] Such as figure 1 , 2 As shown in and 4, a hedge trimmer transmission and shearing mechanism with planetary gear transmission includes a transmission mechanism assembly, a shearing mechanism assembly, a first housing 1 and a second housing 9. The second casing 9 is cylindrical and fixed on the top surface of the first casing 1 .
[0030] Such as figure 2 , 3 As shown in and 4, the transmission mechanism assembly includes a first bearing 5, a second bearing 6, a third bearing 11, a needle bearing 12, a first gear 7, a second gear 8, a third gear 13, a fourth gear 14, a One transmission shaft 3, the second transmission shaft 4, the planetary carrier base 18, the first pin shaft 19 and the lower ring gear 17; the first transmission shaft 3, the first gear 7, the second gear 8, the first bearing 5 and the second The bearings 6 are all arranged in the first hous...
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Abstract
The invention discloses a hedge trimmer transmission and cutting mechanism driven by planetary gears. Fluctuation of accelerated speed of a crank block type hedge trimmer is large, and small gears atan input end are likely to be damaged. Power is transmitted to a third gear through meshing of a first gear and a second gear; a fourth gear, the third gear and a lower gear ring constitute a planetary gear system retarding mechanism to transmit the power to a fifth gear; the fifth gear is meshed with an upper gear ring; the projection of a central axis of a second pin shaft on the end face of thefifth gear on the end face of the fifth gear is a point on the reference circle of the fifth gear; the tail end of a blade is fixed with the second pin shaft; when the fifth gear rolls on the upper gear ring, the blade is driven to carry out reciprocating linear movement in a diameter direction of the upper gear ring to achieve trimming of a garden. Lateral force is not generated by the blade, and the second pin shaft is not easily broken, so that the cutting speed is increased, and the working efficiency is improved. The tooth number of the third gear with fewest teeth is greater than that of a conventionally adopted small gear, and change of the accelerated speed is more stable.
Description
technical field [0001] The invention belongs to the field of garden machinery, and in particular relates to a hedge trimmer transmission and shearing mechanism driven by a planetary gear. Background technique [0002] Hedge trimmer is a common garden machine, suitable for tea pruning, as well as professional pruning of gardens such as parks, courtyards, and roadside hedges. Wherein, the driving device is connected with the shearing mechanism through the transmission mechanism, so as to transmit the power output by the driving device to the shearing mechanism, and then make the blade of the shearing mechanism perform a reciprocating linear motion to realize the garden trimming function. [0003] The traditional hedge trimmer adopts a single-stage gear reduction mechanism with a large reduction ratio, and the reduction ratio is 6-10. During the working process of the hedge trimmer, since the gearbox needs to be hand-held manually, this inevitably requires the miniaturization ...
Claims
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Login to View More IPC IPC(8): F16H1/28A01G3/04
CPCA01G3/0435A01G2003/0461F16H1/2854
Inventor陈建能喻陈楠武传宇杜小强雷昌毅
OwnerZHEJIANG SCI-TECH UNIV