CN2506609Y

CN2506609Y - Steel cable slip fault detector for friction type lift

Info

Publication number: CN2506609Y
Application number: CN 00258525
Authority: CN
Inventors: 袁小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-13
Filing date: 2000-10-13
Publication date: 2002-08-21
Anticipated expiration: 2010-10-13

Abstract

The utility model relates to Hall sensors and an interface circuit in a detecting instrument for steel rope skid breakdown of a friction hoister. The utility model takes a microprocessor as the center and organically combines a sensor, a measuring circuit and an actuator. Through a singlechip 8031, the utility model carries out calculating and logical processing on output signals of the two pairs of Hall sensors and then deals with correspondingly the skid breakdown of the hoister steel rope, so as to enhance the safety level of a mine hoister, remedies the defect of the weak protective function of hoisters in our country and guarantee safety production.

Description

Friction type winder steel rope sipping fault detector

The utility model relates to a kind of Hall element and interface circuit of friction type winder steel rope sipping fault detector.

Mine hoist is the key equipment of Coal Production, and its operation conditions directly influences mine safety, stable production.At present, China's mine hoist degree of automation is lower, safety performance is relatively poor, wherein the detection to friction type winder steel rope sipping fault signal is unsatisfactory, add driver, maintainer's error, the steel rope sipping fault often occurs,, finally can cause the generation of great serious accident as untimely processing.

The purpose of this utility model is the Hall element and the interface circuit that will provide in a kind of friction type winder steel rope sipping fault detector that can effectively detect gig steel rope sipping fault.

The purpose of this utility model is achieved in that establishes V ₁The speed of expression gig steel rope, V ₂Expression friction hoisting machine cylinder edge line speed.Under normal circumstances, V ₁And V ₂Identical and the V of direction ₁＜V ₂, along with the continuous increase of fault, V ₁To reduce gradually, until zero, V followed ₁Size increase direction and cylinder edge line speed V gradually ₂On the contrary, degree of depth sipping fault appears.Therefore, need only the computing of the counting pulse signal process micro controller system 8031 that Hall element is collected, change cooresponding speed V into ₁, V ₂, and compare.If V ₂Surpass V ₁During certain numerical value, the Single-chip Controlling combined aural and visual alarm sends sound and light signal, reminds driver's steel rope slight sipping fault to occur; If V ₂Substantially exceed V ₁During certain numerical value, the Single-chip Controlling gig sends the emergency braking instruction.Simultaneously, micro controller system is gathered reflection V in real time ₁And V ₂The signal of direction relations is after logical process, if find V ₁When reversing sense increased, the Single-chip Controlling manipulator in time moved, and catches the steel rope of downslide, prevented the generation of degree of depth sipping fault.

If with track adjusting wheel or the coaxial rotor wheel that is connected of cylinder is coaxial wheels, the same axle of coaxial wheels is gone up total N magnet steel, and then coaxial wheels whenever circles, and Hall element is just exported pulse accumulative total N.With wherein a pair of Hall element A and B is example, and A and B installation site be phase difference of half magnet steel size at the most, total N magnet steel on the axle of coaxial wheels garden.When arbor wheel just changeed, first magnet steel that is installed on the coaxial wheels was first near A, and the back is near B, give positive transition energizing signal of D end of d type flip flop through reverser IC1, because d type flip flop triggers with rising edge clock,, be positive rotaring signal so its Q end is output as " 1 ".Show V ₁, V ₂Equidirectional; During counter-rotating, first magnet steel on the coaxial wheels is earlier near B, and the back is near A, and then the Q end is output as " 0 ", is reverse signal, shows V ₁, V ₂Reversing sense illustrates V ₁Sense of motion change, degree of depth sipping fault appears.

The utility model is to be the center with the microprocessor, Hall element and interface circuit in the friction type winder steel rope sipping fault detector that sensor, metering circuit, actuating unit are combined.After output signal by 8031 pairs of two pairs of Hall elements of micro controller system gives computing and logical process; sipping fault to the gig steel rope carries out respective handling; thereby strengthen the security level of mine hoist, remedy the not strong defective of China's gig defencive function, ensure safety in production.

Below in conjunction with accompanying drawing shown in the embodiment circuit of the present utility model is done a detailed description.

Accompanying drawing one is the circuit diagram of the utility model friction type winder steel rope sipping fault detector.

If with track adjusting wheel or the coaxial rotor wheel that is connected of cylinder is coaxial wheels, the same axle of coaxial wheels is gone up total N magnet steel, and wherein Hall element A, B on the same group is positioned on the coaxial wheels, and another group Hall element C, D are positioned on the track adjusting wheel.Every pair of Hall element distance is no more than the magnet steel size half, and the signal output part of Hall element A, B, C, D inserts reverser IC respectively ₁3,1,13,11 pin.IC ₁Insert 2,3,12,11 pin of double D trigger IC2, IC respectively corresponding to the mouth of four

incoming signals

₂5,8

pin insert

4,5 pin of four NAND gate, 6 pin of T1074 insert photoelectrical coupler IC through resistance R 1 ₅1 pin, 3,12 pin of T1074 pass through resistance R respectively ₂, R ₃Insert photoelectrical coupler IC ₄, IC ₆1 pin, 1,4,7,10, the 13 pin ground connection of T1074.IC ₄, IC ₆5 pin respectively with the T of micro controller system 8031 ₀, T ₁Link to each other.IC ₅The P of 5 pin micro controller systems 8031 _1.6Link to each other

IC ₁, IC ₂, IC ₃Model be respectively T1004, T1074 and T1086.IC ₄, IC ₅, IC ₆Model all be 4N25, its 5 pin is respectively by pull-up resistor R ₄, R ₅, R ₆Connect power supply.

Claims

1, a kind of later-model friction type winder steel rope sipping fault detector is characterized in that:

With track adjusting wheel or the coaxial rotor wheel that is connected of cylinder is coaxial wheels, and the same axle of coaxial wheels is gone up total N magnet steel, and wherein Hall element A, B on the same group is positioned on the coaxial wheels, and another group Hall element C, D are positioned on the track adjusting wheel; Every pair of Hall element distance is no more than the magnet steel size half, and the signal output part of Hall element A, B, C, D inserts reverser IC respectively ₁3,1,13,11 pin; IC ₁Insert 2,3,12,11 pin of double D trigger IC2, IC respectively corresponding to the mouth of four incoming signals ₂5,8 pin insert 4,5 pin of four NAND gate, 6 pin of T1074 insert photoelectrical coupler IC through resistance R 1 ₅1 pin, 3,12 pin of T1074 pass through resistance R respectively ₂, R ₃Insert photoelectrical coupler IC ₄, IC ₆1 pin, 1,4,7,10, the 13 pin ground connection of T1074; IC ₄, IC ₆5 pin respectively with the T of micro controller system 8031 ₀, T ₁Link to each other; IC ₅The P of 5 pin micro controller systems 8031 _1.6Link to each other.

2, friction type winder steel rope sipping fault detector according to claim 1 is characterized by: IC ₁, IC ₂, IC ₃Model be respectively T1004, T1074 and T1086; IC ₄, IC ₅, IC ₆Model all be 4N25, its 5 pin is respectively by pull-up resistor R ₄, R ₅, R ₆Connect power supply.