Cable winding control device and control method for electric scraper
A technology of electric scraper and control device, applied in the field of automatic control, which can solve the problems of high temperature, high failure rate of variable plunger pump, easy jamming of the VB valve core of the cable release valve, etc., and achieve the effect of reducing system heat generation
Active Publication Date: 2019-08-16
NANJING MEISHAN METALLURGY DEV
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Problems solved by technology
However, in the actual use process, it is found that the VB spool of the cable release valve is easily blocked, and the failure rate is extremely high, and the temperature of the variable displacement plunger pump is very high, which is difficult to solve, and must be solved by design and transformation.
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[0016] The present invention will be further illustrated below in conjunction with specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.
[0017] like figure 1 As shown, the electric scraper cable winding control device of the present invention includes a variable pump 1 connected to a hydraulic oil tank, and the variable pump is connected to two oil circuits, wherein an electromagnetic reversing valve 2 and a first oil circuit are arranged on one oil circuit. The pilot relief valve 3 reaches the control part of the variable pump; the second pilot relief valve 4 and the hydraulic motor 5 are set on the other oil circuit, and the oil return line of the hydraulic motor is connected to the hydraulic motor through the check valve 6 and the radiator 7 hydraulic oil tank.
[0018] The method for controlling the coiling of the electr...
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The invention provides an electric carry-scraper cable winding control device and method. The electric carry-scraper cable winding control device provided by the invention comprises a variable capacity pump connected with a hydraulic oil tank, the variable capacity pump is connected with two oil ways, an electromagnetic directional valve and a first pilot overflow valve are arranged on one oil way and reach a control portion of the variable capacity pump, a second pilot overflow valve and a hydraulic motor are arranged on the other oil way, and an oil return pipeline of the hydraulic motor is connected with the hydraulic oil tank through one-way valves and a radiator. By adopting the electric carry-scraper cable winding control device and method provided by the invention, maintenance is convenient, functions of a PLC control cable winding portion are removed, and the number of fault points is decreased; and a cable winding system is regulated and changed into a pump control system from a prior valve control system, and system heating is reduced.
Description
[0001] Technical field: [0002] The invention relates to a coiling control device and a control method of an electric scraper, belonging to the technical field of automatic control. [0003] Background technique: [0004] The cable winding system of the electric scraper adopts the integrated control method of electricity and liquid. The cable winding system adopts the variable plunger pump 1, and the cable take-up valve VA is used as a remote control valve to control the variable device, thereby controlling the angle of the swash plate of the main pump variable pump. The flow rate of the main pump can be changed according to the size, and finally the retractable cable can be matched with the speed of the vehicle to ensure the tension of the cable. However, in the actual use process, it is found that the VB valve core of the cable release valve is easily blocked, and the failure rate is extremely high, and the temperature of the variable displacement plunger pump is very high, ...
Claims
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IPC IPC(8): B65H75/44
CPCB65H75/4489B65H2701/34
Inventor 丰海隋福仁朱先荣
Owner NANJING MEISHAN METALLURGY DEV