Control method of tension solenoid valve at tail of scraper conveyor
A control method and solenoid valve technology, applied in conveyors, transportation and packaging, etc., can solve problems such as poor control reliability and slow response speed of tension solenoid valves, achieve fast response speed, improve control reliability, and ensure safe use Effect
Active Publication Date: 2020-06-16
QINGDAO CCS ELECTRIC CORP
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Problems solved by technology
[0006] The purpose of the present invention is to provide a control method for the tension solenoid valve at the tail of the scraper machine, which is used to solve the problems of slow response speed and poor control reliability of the tension solenoid valve in the prior art by adopting a step-by-step time-delay control method
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0027] In order to realize the control of the tension solenoid valve flexibly and reliably, ensure that the tension of the scraper chain is within a certain reasonable range, neither the tension is too small to cause failures such as chain drop or jamming, nor is the tension too large to cause abrasion of the scraper , broken chain and other faults, this embodiment relates to a control method for the tail tension solenoid valve of scraper machine, see Figure 1 to Figure 3 As shown, the specific description is as follows.
[0028] S1: Determine whether the tension sensor and the displacement sensor are faulty. If both are faulty or only the displacement sensor is faulty, control the tension solenoid valve to lock and return to S1. If only the tensi...
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The invention discloses a control method of a tension solenoid valve at the tail of a scraper conveyor. The control method comprises the following steps: (S1) locking the tension solenoid valve and returning to S1 if at least a displacement sensor fails, controlling loading and unloading valves and returning to S1 if only a tension sensor fails, and performing S2 if the displacement sensor and thetension sensor are both failure-free; (S2) judging whether tension needs to be adjusted, enabling a tension adjustment sign and then performing S3 if the tension needs to be adjusted, and performingS3 if the tension does not need to be adjusted; (S3) judging whether real-time tension is within a target tension threshold range, clearing the tension adjustment sign to zero and performing S4 if thereal-time tension is within the target tension threshold range, and performing S4 if the real-time tension is not within the target tension threshold range; (S4) judging whether the tension adjustment sign is enabled, locking the tension solenoid valve and returning to S1 if the tension adjustment sign is not enabled, and controlling the loading and unloading valves and returning to S1 accordingto the real-time tension and a tension target value if the tension adjustment sign is enabled. The control method of the tension solenoid valve at the tail of the scraper conveyor is used for solvingthe problems of slow response and poor control reliability when the tension solenoid valve is controlled in a stepping time-delay control manner.
Description
technical field [0001] The invention relates to the technical field of scraper machines, in particular to a control method for a tail tension solenoid valve of scraper machines. Background technique [0002] Scraper conveyor (referred to as scraper conveyor), as the main transportation equipment in the fully mechanized mining face, is developing towards the direction of large capacity, long distance and high power. The scraper chain is one of the important components of the scraper conveyor. As the traction mechanism of the scraper conveyor, the scraper chain restricts the normal operation of the scraper conveyor, and at the same time affects the safety and production of the mine. In order to ensure that the scraper chain adapts to the change of load and make the chain work in a moderately elastic state, it is necessary to adjust and precisely control the chain tension of the scraper conveyor in real time. [0003] The tail cylinder of the scraper machine is connected to th...
Claims
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IPC IPC(8): B65G23/44
CPCB65G23/44
Inventor 宋承林韩宁刘锡安张鸿波
Owner QINGDAO CCS ELECTRIC CORP