Method and device for controlling the parallelism between the rollers of the crusher based on the displacement control method
A technology of mode control and displacement control, applied in the field of mechanical equipment, can solve the problems of unresolved control of the parallelism of moving rolls, unreported, and unexplained problems of roll gap maintenance, so as to improve stability, reduce equipment wear, The effect of prolonging the service life
Active Publication Date: 2020-12-11
NANJING MEISHAN METALLURGY DEV +1
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Problems solved by technology
Chinese patent CN103785499A, titled "A Four-Roller Crusher", uses a mechanical stopper to adjust the stroke and control the gap between the rolls, but it does not explain the problem of maintaining the roll gap during use, let alone solve it The problem of controlling the parallelism between the moving roller and the fixed roller when it moves fast
[0004] To sum up, there is an urgent need for a control method and control system for controlling the distance and parallelism between the rollers of the crusher in the form of displacement control, which is suitable for technical fields such as material crushing and hydraulic control. A control method for synchronizing the position changes at both ends during the moving process of the moving roller, but there is no report on this type of technology
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[0027] 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.
[0028] Such as figure 1 As shown, a device for controlling the parallelism between the rollers of the crusher based on the displacement control method in this embodiment includes a controller 1, a hydraulic station 2, a first control valve 3a, a second control valve 3b, and a first displacement sensor 4a , the second displacement sensor 4b, the first oil cylinder 5a, the second oil cylinder 5b, the moving roller 6, the second bearing seat 61, the second bearing seat 62, the first limit switch 7a, the second limit switch 7b, the fixed roller 8 The first control valve 3a has two oil pipes connected with the hydraulic station 2 respectively, and the first control valve 3a also has two oil pipes...
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The invention provides a method and device for controlling the parallelism degree of a roller pair of a crusher based on a displacement control mode. The device comprises the roller pair of the crusher consisting of a fixed roller and a movable roller; and hydraulic oil cylinders are connected to bearing bases at two ends of the movable roller. The device is characterized in that oil supply pipesof the two hydraulic oil cylinders are connected with hydraulic stations through control valves; end covers of rodless cavities of the two hydraulic oil cylinders are connected with displacement sensors; the control valves and the displacement sensors are connected with controllers; and stop checking positions are arranged on the sides of the bearing bases at the two ends of the movable roller. The device can effectively guarantee a gap and the parallelism degree between the two rollers within a preset error range, and maintains the parallelism degree of the movable roller and the fixed rollerin the process of quickly shifting the movable roller from the stop checking position to a working position.
Description
Technical field: [0001] The invention relates to a method and a device for controlling the parallelism between a pair of rollers of a crusher based on a displacement control mode, and belongs to the technical field of mechanical equipment. Background technique: [0002] During the use of double-roll and four-roll crushers, gap control is prone to instability, and the distance between two rolls and the parallelism between two rolls are difficult to control. At this time, the broken particle size is difficult to control, and the fixed roller and the moving roller that form the pair of rollers experience abnormal wear. [0003] In the new four-roll crusher, a technology of automatic adjustment of the roll gap controlled by PLC is adopted. The displacement sensor and pressure sensor of the moving roll oil cylinder respectively input the detected signals into the PLC through the analog signal input module, and the PLC passes the analog signal. The signal output module outputs an...
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IPC IPC(8): B02C4/02B02C4/32B02C25/00
CPCB02C4/02B02C4/32B02C25/00
Inventor 贾方俊孙建福
Owner NANJING MEISHAN METALLURGY DEV