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

Protection device and control method based on mechanical centrifugal switch and relay

A relay control and centrifugal switch technology, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as hidden safety hazards, prone to speeding, and the gear reduction box does not have a self-locking function, and achieves improved safety and simple structure. , the effect of low cost

Active Publication Date: 2022-06-28
SOUTH CHINA AGRI UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional gear reducer design does not have a self-locking function, which makes the monorail conveyor with a gear transmission device prone to speeding when going up and down with a full load, and there are certain safety hazards

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
  • Protection device and control method based on mechanical centrifugal switch and relay
  • Protection device and control method based on mechanical centrifugal switch and relay
  • Protection device and control method based on mechanical centrifugal switch and relay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A protection device based on a mechanical centrifugal switch and a relay provided by the embodiment of the present invention is applied to the existing self-propelled electric monorail conveying equipment in mountain orchards, and there is no need to improve the existing conveying equipment. The protection device can be installed on the transport equipment.

[0045] refer to figure 1 Said, the protection device includes: a speed limiter, a centrifugal switch, a relay control circuit and an electrified brake, all of which are installed on the mechanical body of the monorail conveying equipment; the mechanical body is provided with a power supply system and a motor; the power supply system is used for Power supply for motors, motor drivers, and energized brakes; the power supply system includes, for example, a battery with a rated voltage of 48V, a DC conversion module with a rated output voltage of 24V, and a control power supply with an adjustable output voltage. The e...

Embodiment 2

[0068] The embodiment of the present invention also provides a control method based on a mechanical centrifugal switch and a relay, using the protection device as described in Embodiment 1 above; the control method includes:

[0069] (1) Obtain the speed of the motor output shaft in real time;

[0070] (2) When the output shaft of the electric motor is greater than or equal to the preset threshold, the speed limiter is thrown away to start the first-level mechanical friction speed limit;

[0071] (3) When the rotational speed of the output shaft of the motor continues for a preset period of time and is greater than or equal to the preset threshold, the centrifugal switch will turn off the relay control circuit, and activate the energized brake to perform secondary braking and speed limiting.

[0072] In one embodiment, the method further includes:

[0073] (4) The motor driver turns on the corresponding speed limit selection interface according to the feedback information of ...

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 protection device and a control method based on a mechanical centrifugal switch and a relay. The protection device includes: a speed limiter, a centrifugal switch, a relay control circuit and an electrified brake, all of which are installed on the mechanical body of the monorail transport equipment ;There is a power supply system and a motor on the mechanical body; the speed limiter is fixedly connected to the output shaft of the motor. When the speed of the output shaft is greater than or equal to the preset threshold, the speed limiter is thrown away to start the first-level mechanical friction speed limit; the motor and the centrifugal switch The switch, the relay control circuit and the energized brake are sequentially connected; when the output shaft speed of the motor lasts for a preset time and is greater than or equal to the preset threshold, the centrifugal switch will be thrown off and connected to the relay control circuit, and the energized brake will be activated for two-stage braking. Dynamic speed limit; the protection device can solve the overrun problem of self-propelled electric monorail transportation equipment in mountain orchards, without the need to improve the existing transportation equipment, and the protection device has a simple structure and low cost.

Description

technical field [0001] The invention relates to the field of control circuits, in particular to a protection device and a control method based on a mechanical centrifugal switch and a relay. Background technique [0002] As we all know, at present, the transportation of agricultural materials and spraying plant protection in mountain orchards mostly rely on manual operations, resulting in low production efficiency, high labor intensity, and difficulty in ensuring production safety. Unmanned transport equipment represented by rail transport aircraft can adapt to complex terrain environments, and has the characteristics of simple structure, strong climbing ability, safety and ease of use, and is suitable for production operations in hilly and mountainous orchards. [0003] However, the traditional design of the gear reduction box does not have the self-locking function, which makes the monorail conveyor using the gear transmission device prone to the phenomenon of speeding whe...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/09
CPCH02H7/093
Inventor 李震易远飞吕石磊洪添胜薛秀云陈姗温威杨洲周岳淮
Owner SOUTH CHINA AGRI UNIV