Dual real-time protection system for concrete pump hopper stirring motor

A concrete pump and protection system technology, applied in servo motor components, fluid pressure actuation system safety, fluid pressure actuation system components, etc., can solve the problems of easy misoperation, manual control, poor operator protection, etc., and achieve enhanced Safety protection, overcoming the effect of easy misuse

CN112833066APending Publication Date: 2021-05-25ATLAS COPCO NANJING CONSTR & MINING EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-05-25

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Abstract

The invention discloses a dual real-time protection system for a concrete pump hopper stirring motor. The system comprises an energy loop, an execution loop and a control loop. The energy loop comprises a motor, a hydraulic pump and a hydraulic oil tank. The execution loop comprises a hydraulic on-off valve, an electromagnetic directional valve and the stirring motor. The control loop comprises a control unit and an angle sensor, and the angle sensor is installed on a rotating shaft of a concrete pump hopper screen and used for detecting the opening angle of the concrete pump hopper screen. The control unit is electrically connected with an electromagnetic coil of the electromagnetic directional valve and the angle sensor, and when the opening angle is larger than a set value, the control unit controls the electromagnetic coil of the electromagnetic directional valve to be powered off. By adopting the dual real-time protection system for the concrete pump hopper stirring motor, the danger possibly caused by misoperation on the concrete stirring motor when a hopper is opened can be prevented, and safety protection for operators is enhanced.
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Description

technical field

[0001] The invention relates to a concrete pump hopper mixing system, in particular to a dual real-time protection system for a concrete pump hopper mixing motor. Background technique

[0002] Modern concrete engineering machinery is a multi-faceted technology including mechanical technology, hydraulic technology, electrical technology and control technology, and its products and systems are the integration of various technologies.

[0003] With the rapid development of the national economy, concrete construction machinery is used more and more in the fields of housing construction, mine support, pit backfill, tunnel construction, road / railway construction, and bridge construction. The concrete pump hopper mixing device is a hydraulic system that uses a hydraulic pump connected to a control valve block to drive a hydraulic mixing motor. This system has disadvantages such as easy misoperation and poor protection for operators. In the future, supporting hydrau...

Examples

Embodiment Construction

[0013] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0014] like figure 1 As shown, the double real-time protection system of the mixing motor of the concrete pump hopper of the present invention includes an energy circuit, an execution circuit and a control circuit.

[0015] The energy circuit includes a motor 1 , a hydraulic pump 2 and a hydraulic oil tank 4 , the motor 1 is connected to the hydraulic pump 2 , and the oil suction port S of the hydraulic pump 2 is connected to the hydraulic oil tank 4 . The hydraulic pump 2 is a variable displacement pump or a quantitative pump, and the hydraulic pump 2 is driven by the motor 1 .

[0016] The execution circuit includes a hydraulic on-off valve 5, an electromagnetic reversing valve 7 and a stirring motor 8, the oil outlet B1 of the hydraulic pump 2 is connected to the oil inlet P1 of the hydraulic on-off valve 5, and the hydraulic through-off val...