Description
hardware flow control. It is an ideal choice in the field of industrial automation.
In the formula, a is the design acceleration/deceleration value: s is the current actual position value of the
elevator: V2 is the maximum speed of the elevator at this position.
Considering that the lifting system needs to enter the parking track at a low crawling speed when entering the
end of the stroke to avoid equipment damage caused by large mechanical impact, therefore, when there are still
1~5m away from the parking position, the lifting speed is limited to 0.5m/ below s.
Since the instantaneous speed before parking is very low, the position accuracy of the system”s parking can
be relatively improved, which is particularly important when the auxiliary shaft is lifted.
2.2 Design and implementation of security protection functions
Mines have particularly strict requirements on safety and reliability of hoist control systems [5]. While ensuring high
reliability of electrical control equipment, the control system also sets up multiple protections in key links where failures
may occur, and detects the actions and feedback signals of these protection devices in real time.
First of all, monitoring the operating status of the elevator is the top priority in the safety protection
function of the elevator control system. In the control system, the operating speed and position of the
motor are monitored at all times, and the current position and speed values are compared with the system”s
designed speed and position curve. Once it is found that the
actual operating speed of the hoist exceeds the designed speed value, immediately Issue an emergency
stop command and strictly ensure that the lifting speed is within the safe monitoring range during the entire
lifting process. At the same time, position detection switches are
arranged at several locations in the wellbore, and these position detection switches correspond to specific
position values and corresponding speed values. When the elevator passes these switches, if it is found through
encoder detection that the actual speed value and position deviate from the values corresponding to the position
detection switch, the control system will also judge that it is in a fault state
and immediately implement an emergency stop.
In order to determine whether the encoder connected to the main shaft of the elevator drum is normal,
two other encoders are installed on the elevator. In this way, the position and speed detection values
of the three encoders are always compared. Once it is found that the deviation between the detection
value of one encoder and the detection value of the other two encoders exceeds the allowable range,
the control system will immediately consider it to have entered a fault state and implement an emergency stop. Protective action.
3 Conclusion
The efficient and safe operation of main well equipment is an important guarantee for its function.
In the application of mine hoist, the 800xA system designed speed curve, self-correction, various
self-diagnosis and protection functions according to the specific process characteristics of the main
shaft mine hoist, which has achieved good results in practical applications.
Display operation panel 5SHY35L4503 3BHB004693R0001
Display operation panel 5SHY3545L0020 3BHE014105R0001
Display operation panel 5SHY3545L0020
Display operation panel 5SHY3545L0020
Display operation panel 5SHY3545L0020
Display operation panel 5SHY3545L0016 3BHB020720T0002
Display operation panel 5SHY3545L0016 3BHB020720R0002
Display operation panel 5SHY3545L0016 3BHB019719R0101
Display operation panel 5SHY3545L0016 3BHB019719R0101
Display operation panel 5SHY3545L0016
Display operation panel 5SHY3545L0016
Display operation panel 5SHY3545L0014
Display operation panel 5SHY3545L0014
Display operation panel 5SHY3545L0010/3BHB013088R0001
Display operation panel 5SHY3545L0010 3BHB13088R0001
Display operation panel 5SHY3545L0010 3BHB013088R0001
Display operation panel 5SHY3545L0010 3BHB013088R0001
Display operation panel 5SHY3545L0010 3BHB013088R0001
Display operation panel 5SHY3545L0010 3BHB009681R0101
Display operation panel 5SHY3545L0010
Display operation panel 5SHY3545L0010
Display operation panel 5SHY3545L0009 3BHB013085R0001
Display operation panel 5SHY3545L0009 3BHB013085R0001
Display operation panel 5SHY3545L0009 3BHB013085R0001
Display operation panel 5SHY3545L0009
Display operation panel 5SHY3545L0009
Display operation panel 5SHY3545L0005 3BHB004692R0001
Display operation panel 5SHY3545L0005
Display operation panel 5SHY3545L0003 3BHB004692R001
Display operation panel 5SHY3545L0003
Display operation panel 5SHY3545L0002 3BHE009681R0101
Display operation panel 5SHX26L4520
Display operation panel 5SHX26L4520
Display operation panel 5SHX2645L0004 3BHB003154R0101
Display operation panel 5SHX2645L0004
Display operation panel 5SHX2645L0004
Display operation panel 5SHX2645L0004
Display operation panel 5SHX2645L0002 3HB012961R0001
Display operation panel 5SHX2645L0002 3BHB012961R0001
Display operation panel 5SHX2645L0002
Display operation panel 5SHX1960L0006 3BHB016120R0002
Display operation panel 5SHX1960L0004 3BHL000390P0104
Display operation panel 5SHX1960L0004 3BHL000390P0104
Display operation panel 5SHX1960L0004
Display operation panel 5SHX1960L0004
Display operation panel 5SHX14H4502 3BHB003230R0101
Display operation panel 5SHX14H4502
Display operation panel 5SHX1445H0002 3BHL000387P0101
Display operation panel 5SHX1445H0002 3BHL000387P0101
Display operation panel 5SHX1445H0001 3BHL00391P0101
Display operation panel 5SHX1445H0001 3BHL000391P0101
Display operation panel 5SHX1445H0001
Display operation panel 5SHX10H6004
Display operation panel 5SHX1060H0003
Display operation panel 5SHX1060H0003
Display operation panel 5SHX1060H0001 3BHL000392P0101
Display operation panel 5SHX0845F0001 3BHL000385P0101
Display operation panel 5SHX0845F0001
Display operation panel 5SHX06F6004 3BHB003387R0101
Display operation panel 5SHX0660F0002
Display operation panel 5SHX0660F0001 3BHB003387R0101
Display operation panel 5SHX0660F0001
Display operation panel 5SHX0360D0001 3BHB004027R0101
Display operation panel 5SHX0360D0001 3BHL000384P0101
Display operation panel 5SGY6545L0001
Display operation panel 5SGY4045L000
Display operation panel 5SGY3545L0010 3BHB006485R0001
Display operation panel 5SDF13H4501
Display operation panel 5SDF1045H0002
Display operation panel 5SDF1045H0002
Display operation panel 5SDF0860H0003
Display operation panel 5SDF0860H0003
Display operation panel 5SDF0545F0001 3BHL000395P0001
Display operation panel 5SDF03D4501
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