Unlock instant, AI-driven research and patent intelligence for your innovation.

Variable-frequency variable-amplitude excitation type vibration harvesting device and amplitude modulation and use method thereof

A technology of vibration frequency and rotary type, which is applied in the direction of using vibration fluid, application, picking machine, etc., can solve the problems of unable to meet the needs of fruit tree picking, unable to meet real-time amplitude modulation, long response time, etc., to achieve convenient grip operation, improve Effectiveness and pertinence, the effect of reducing mechanical damage

Active Publication Date: 2020-12-11
SOUTH CHINA AGRI UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most vibrating harvesters currently on the market use a fixed amplitude plus adjustable frequency to output excitation, which is less applicable and cannot meet the picking needs of different sizes and different types of fruit trees; There is a harvesting device that can adjust the amplitude, which usually uses a motor to drive the corresponding mechanical mechanism, but this method has a long response time and cannot meet the purpose of real-time amplitude modulation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Variable-frequency variable-amplitude excitation type vibration harvesting device and amplitude modulation and use method thereof
  • Variable-frequency variable-amplitude excitation type vibration harvesting device and amplitude modulation and use method thereof
  • Variable-frequency variable-amplitude excitation type vibration harvesting device and amplitude modulation and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see Figure 1 to Figure 4 As shown, this embodiment provides a variable-frequency and variable-amplitude excitation vibration harvesting device, including a housing, a drive assembly 1, a crank slider assembly 2, an amplitude modulation assembly 3 and an actuating arm 4 with a rotatable U-shaped chuck. ;

[0029] The shell includes an upper shell 5 and a lower shell 6, the side of which has a through hole 602, the upper shell 5 and the lower shell 6 are connected by bolts, the top and side of the upper shell 5 are respectively provided with an upper handle 501 and a rear The handle 504 is convenient for the user to hold with both hands. The top of the upper shell is also provided with a first rotary switch 502, a second rotary switch 503 and a third rotary switch 505, and the inside of the lower shell 6 is provided with a sleeve 601;

[0030] The drive assembly 1 includes a battery module 101, a motor 102, a small bevel gear 103 and a large bevel gear 104 respectively ...

Embodiment 2

[0040] Different from Embodiment 1, this embodiment selects the matching mode of the vibration frequency and amplitude of the device according to the actual needs of harvesting fruit trees as the low-frequency-large-amplitude mode, and turns the third rotary switch 505 to the maximum gear for current output , and then turn on the second rotary switch 503 to start the motor 102, and turn the second rotary switch 503 to the low frequency mode; Adjust the first knob switch 502 to select the change mode of the current output (any one of linear function waveform output, power function waveform output, exponential function waveform output and logarithmic function waveform output gear), and finally, adjust the third knob switch 505 to reduce the output current of the current source 302 and reduce the damping force of the magneto-rheological damper 303, thereby reducing the amplitude of the harvesting device and reducing the mechanical damage of the device to the fruit tree.

Embodiment 3

[0042] Different from Embodiment 1, this embodiment selects the matching mode of the vibration frequency and amplitude of the device according to the actual needs of harvesting fruit trees as a high-frequency-small amplitude mode, and controls the first knob of the current output change mode The switch 502 is turned to the no-current output gear, then the second rotary switch 503 is turned on to start the motor 102, and the second rotary switch 503 is turned to the high-frequency mode; The second rotary switch 503 reduces the frequency, and then adjusts the first rotary switch 502 to select the change mode of the current output (any one of the linear function waveform output, the power function waveform output, the exponential function waveform output and the logarithmic function waveform output gear) kind), finally, adjust the third rotary switch 505 to adjust the output current of the current source 302, increase the damping force of the magneto-rheological damper 303, thereb...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a variable-frequency variable-amplitude excitation type vibration harvesting device and an amplitude modulation and use method thereof. The device comprises a shell, a drivingassembly, a crank sliding block assembly, an amplitude modulation assembly and an actuating arm with a rotatable U-shaped clamping head. The amplitude modulation assembly comprises an adjustable current source and a magneto-rheological damper, the driving assembly is arranged in the shell and connected with the crank sliding block assembly, a sliding rod of the crank sliding block assembly penetrates through the shell and is connected with one end of the magneto-rheological damper of the amplitude modulation assembly, and the other end of the magneto-rheological damper is connected with the actuating arm. The magneto-rheological damper is connected with the adjustable current source through a wire, the damping force of the magneto-rheological damper is controlled by adjusting the output current of the adjustable current source, and therefore the vibration amplitude of the harvesting device is adjusted. According to the vibration harvesting device, the amplitude is adjusted in real timewhile it is guaranteed that fruit trees are not damaged, the picking requirements of different fruit trees can be met, fruits are separated in a targeted manner, mechanical damage to the fruits is reduced, and the application range of the vibration harvesting device is enlarged.

Description

technical field [0001] The invention relates to the technical field of forest fruit harvesting machinery, in particular to a frequency-variable-amplitude excitation vibration harvesting device and its amplitude modulation and use method. Background technique [0002] Vibrating mechanical harvesting is the easiest and most effective harvesting method under current conditions. It is suitable for large-scale and large-scale fruits. The basic principle is to apply an exciting force of a certain frequency and amplitude to the fruit trees, forcing the fruit trees to The fruit on the ground is accelerated by some form of vibration and is affected by the inertial force. When the inertial force of the fruit is greater than the combination force between the fruit and the fruit branch, the fruit will break with the fruit branch at the weakest connection and complete the separation process. It is well known in the industry that due to differences in fruit growth characteristics, the exc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A01D46/26B06B3/02
CPCA01D46/264B06B3/02
Inventor 付函杜文迪杨浩林杨洲李君段洁利王慰祖金莫辉
Owner SOUTH CHINA AGRI UNIV