Automatic coal quantity control method for rear scraper conveyer of top coal caving working surface
A scraper conveyor and top-coal caving technology, applied in the direction of conveyor control devices, conveyors, conveyor objects, etc., can solve the problem of gangue jamming of the coal discharge port, damage and lack of top-coal caving brackets and rear scraper conveyors And other issues
Active Publication Date: 2020-06-09
HENAN POLYTECHNIC UNIV
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Problems solved by technology
At present, there is no automatic and rapid identification device or method for the size of coal and gangue above the top-coal caving support to automatically adjust the size of the coal discharge port of the top-coal caving support. There is a risk that large pieces of gangue will block the coal discharge port. Caused damage to the top-coal caving support and the rear scraper conveyor, so the control of the coal discharge amount of the top-coal caving support still requires deep manual participation; problem (3) determines the final automatic control of the amount of coal on the rear scraper conveyor, Due to the lack of realization of problem (2), problem (3) currently also requires deep manual participation, which can be realized through manual observation and command in the underground centralized control center
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[0085] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention Inside.
[0086] Such as Figure 1 to Figure 5 As shown, the present invention provides a method for automatically controlling the amount of coal of a scraper conveyor at the rear of a top-coal caving face, comprising the following steps:
[0087] S1: start;
[0088] S2: System initialization setting; including setting the total time t of coal caving on the top coal caving support tot , coal dis...
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The invention discloses an automatic coal quantity control method for a rear scraper conveyer of a top coal caving working surface. The method comprises the following steps of S1, starting; S2, initializing settings of a system; S3, determining whether a top coal caving bracket allows coal drawing or not, if the top coal caving bracket does not allow the coal drawing, executing S12, and otherwise,executing S4; S4, acquiring an effective current value Ihgb_rms of the rear scraper conveyor; S5, determining whether Ihgb_rms is seriously overloaded or not, if the Ihgb_rms is overloaded, executingS10, and otherwise, executing S6; S6, starting coal drawing, and executing a coal drawing mode M; S7, determining whether the coal drawing is completed or not, if the coal drawing is not completed, executing S3, and otherwise, executing S8; S8, modifying total coal drawing time ttot, determining whether the modified total coal drawing time is completed or not, if the modified total coal drawing time is completed, executing S12, and otherwise, executing S9; S9, calculating the next coal drawing mode, and then executing S3; S10, stopping a bracket moving operation, and closing a coal drawing opening; S11, determining whether there is coal drawing stop caused by manual intervention, if there is the coal drawing stop caused by the manual intervention, executing S12, and otherwise, executing S4; and S12, ending.
Description
technical field [0001] The invention relates to the technical field of coal mining, in particular to an automatic control method for coal volume of a scraper conveyor at the rear of a top coal caving working face. Background technique [0002] Realizing the automatic control of the coal quantity of the scraper conveyor at the rear of the top-coal caving fully mechanized mining face is an important link in realizing automatic top-coal caving. Control is not an automatic closed-loop system formed by automatic detection and automatic adjustment. Among them, the detection of the coal quantity of the rear scraper conveyor is estimated by the personnel of the underground centralized control center observing the current of the rear scraper conveyor, and the adjustment of the coal quantity of the rear scraper conveyor needs to be conducted by the personnel of the centralized control center based on experience Instruct the operator of the top-coal caving support to operate. Due to ...
Claims
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IPC IPC(8): B65G43/00
CPCB65G43/00B65G2203/0258
Inventor 张国澎陶海军荆鹏辉李斌胡治国徐冬冬郑征李东印李化敏
Owner HENAN POLYTECHNIC UNIV