Contact-type leveling device based on comparator

A comparator and contact-type technology, which is applied in the field of contact-type leveling devices based on comparators, can solve the problems of low detection accuracy, limited use conditions, narrow application range, etc., and achieve high detection accuracy, high work reliability, Achieving low-cost effects

CN103161120AInactive Publication Date: 2013-06-19SHAANXI JOINTARK MASCH GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-06-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a contact-type leveling device based on a comparator. The device comprises a comparator and a power source. A slide arm height position acquisition unit used for acquiring a slide arm actual height position and an upper-lower limit setting unit used for setting slide arm height upper limit position and lower limit position are connected to an input end of the comparator. A control signal output unit is connected to an output end of the comparator. The control signal output unit comprises a lifting solenoid valve, a lowering solenoid valve, a lifting solenoid valve driving device connected with the lifting solenoid valve, and a lowering solenoid valve driving device connected with the lowering solenoid valve. The lifting solenoid valve driving device and the lowering solenoid valve driving device are both connected with the output end of the comparator. The device provided by the invention has the advantages of simple structure, reasonable design, low realization cost, high function flexibility, low power consumption, low failure rate, adjustable sensitivity, high detection precision, high working reliability, long service life, high practicality, and easy popularization. The device can be applied on pavements with different road conditions.
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Description

technical field

[0001] The invention relates to the technical field of construction machinery, in particular to a contact leveling device based on a comparator, which is used to detect and control the height position of construction machinery components relative to the ground. Background technique

[0002] At present, the known detection and control of the height position of an object is composed of an ultrasonic sensor, a temperature compensator and a signal processing system. It uses the ultrasonic sensor to generate the sound wave signal, uses the sound wave to propagate in the air and encounters the reflection of the obstacle object, and then receives the reflected ultrasonic signal, uses the propagation speed of the ultrasonic wave in the air to calculate the actual height of the object to the ground, and uses the temperature compensator To make up for the calculation error caused by the change of propagation speed after the ultrasonic signal is affected by temperature,...

Examples

Embodiment Construction

[0026] Such as figure 1 As shown, the present invention includes a comparator 1 and a power supply unit 2 for supplying power to each power consumption unit. The input terminal of the comparator 1 is connected with a sliding arm height position acquisition unit 3 for collecting the actual height position of the sliding arm and for setting The sliding arm height position acquisition unit 4 of the upper limit position and the lower limit position of the sliding arm height, the output terminal of the comparator 1 is connected with a control signal output unit for outputting a leveling control signal, and the control signal output unit includes a rising solenoid valve 5, The descending solenoid valve 6, the ascending solenoid valve driver 7 connected with the ascending solenoid valve 5 and the descending solenoid valve driver 8 connected with the descending solenoid valve 6, the ascending solenoid valve driver 6 and the descending solenoid valve driver 8 are all connected with the ...