Device and method for controlling movement and positioning of unloading truck

Abstract

The invention discloses a tripper movement positioning control device and a tripper movement positioning control method. The tripper movement positioning control device comprises a feeding system, a supporting device, a steel wire rope following mechanism and a control cabinet. The feeding system comprises a tripper, guide rails, a conveying belt, a tripper electric control system and a tripper dust collection system, the supporting device is arranged behind the guide rails, the steel wire rope following mechanism comprises two belt pulleys, a steel wire rope and a connecting piece, the steel wire rope is connected with the two belt pulleys, the connecting piece is connected with the steel wire rope, the belt pulleys are connected with encoders through couplers, the control cabinet is arranged in front of the tripper guide rails and comprises three decoding meters arranged on a cabinet door and a PLC (programmable logic controller) arranged in the cabinet door, the encoders are connected with the input ends of the decoding meters, the output ends of the decoding meters are connected with the PLC, and the PLC is connected with an upper computer through an RS485 serial port. The tripper movement positioning control device is capable of monitoring tripper positions in real time by using the steel wire rope following mechanism with encoder displacement detection, the PLC and upper computer monitoring.

Description

technical field [0001] The invention relates to the technical field of bulk material storage and transportation, and mainly relates to a device and method for controlling the movement and positioning of an unloading vehicle. Background technique [0002] The mobile positioning of the unloading car is designed for the mobile positioning and dust removal control of the unloading car on the conveyor belt. At present, the positioning detection of the original unloading car is realized by a group (dozens) of proximity switches, and the proximity switches are installed on the guide rail. On the above, the effective distance that the switch can detect the passing of the unloading truck is 10mm. A set of feeding system has several silos, and each silo corresponds to a dust removal disc valve. When the trolley is unloading above a certain silo, the corresponding dust removal valve must be opened, otherwise smoke and dust will billow. If the dust removal valve of the silo cannot be c...

AI Technical Summary

Problems solved by technology

A set of feeding system has several silos, and each silo corresponds to a dust removal disc valve. When the trolley is unloading above a certain silo, the corresponding dust removal valve must be opened, otherwise smoke and dust will billow. The silo dust removal valve cannot be closed in time, and the two dust removal valves are opened at the same time, which will affect the dust removal effect of the silo being unloaded

Due to the harsh environment on site, the movement of the unloading truck itself has a certain deviation, and the proximity switch is often damaged or the sensing metal sheet is deformed, resulting in the proximity switch not being able to correctly reflect the position of the unloading truck

In this way, neither the correct positioning nor the correct opening of the dust removal valve will result in poor dust removal effect, affecting clean production, and sometimes the smoke and dust are very serious, polluting the environment

[0003] At present, there are many problems in the positioning detection of unloading trucks: the number of proximity switches is too large, it is easy to fail, and the maintenance of the system is large; because the proximity switches need to cooperate with the sensing metal sheet to complete the detection, and the sensing distance of 10mm is short, the body slightly Shaking will exceed the sensing range, resulting in no signal output from the proximity switch; secondly, the high temperature of the ore in summer can easily cause damage to the switch, and the discrete switch value cannot reflect the exact position of the unloading car; because the detection system cannot accurately reflect the location of the unloading car Therefore, the unloading vehicle can only be manually operated, and the accurate position detection signal cannot be obtained. Of course, the correct interlock opening and closing of the dust removal valve cannot be realized; the detection mechanism is installed on the unloading vehicle and the track, and the mechanical Not only will the detection sensor be damaged during maintenance, but the sensing distance will also change, which may cause some point signals to not be detected, and the real position of the material truck cannot be displayed on the computer monitor; install a gear mechanism on the unloading vehicle, and the gear mechanism Connect the encoder, and the encoder will detect the position of the unloading car, but the unloading car often slips when moving on the rail, which will cause the number of rotations of the encoder to not truly reflect the position of the unloading car

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