Scientia Silvae Sinicae ›› 1997, Vol. 33 ›› Issue (2): 176-182.
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Ruizhen Shen,Xiaowen Zhang
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Abstract:
In order to design the reasonable vibrating im plements for harvesting fruits or nuts, the connection force of fruits and their stalk are measured, the experiments of stimulation and dislodging of fruits by vibration on the branches are carried out. The vibrating ex periment on the branches of living tree are done outdoors. At last, the most suitable stimulation frequency, acceleration of vibration, time of vibration were obtained by the analyses of data. The useful technological parameter is offered to the design of implements for shaking the branches of orchard trees todislodge fruits or nuts.
Key words: Ginkgo biloba L., Branches, Dislodging fruits by vibration
Ruizhen Shen,Xiaowen Zhang. THE RESEARCH ON THE DISLODGING OF FRUITS BY VIBRATION WITH THE BRANCHES OF GINKGO BILOBA L.[J]. Scientia Silvae Sinicae, 1997, 33(2): 176-182.
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Table 1
Connecting force in Ginkgo Biloba fruit stalk and weight of single fruit"
Fig.1
Experiment upon dislodging fruits by vibration in room 1. Screw vice; 2. Thin steel lath; 3. branch with fruits; 4. ultra-low frequency; singnal generator XD5; 5. Power amplifier B&K 2706; 6. Vibrator B&K 4809"
Table 2
Vibrating frequency and probability of dislodging fruits"
Fig.2
Vibration measurement of Ginkgo biloba branches out room 1.Ginkgo biloba; 2 Accelerometer JC-6; 3.Hook with long holder; 4. Forcemeter; 5.Integrator; 6.Precision noise meter ND2; 7. Electric chargc amplifier B&K 2635; 8.Tape recorder MR-30C"
Fig.3
Vibrorecord of one branch"
Table 3
Relation of pull and vibrating acceleration on samesmall branch"
Table 4
Vibrating acceleration on different small branch with same pull"
