CN1023777C - Brake of mine trolley locomotive - Google Patents

Abstract

The present invention discloses a braking device of a trolley locomotive for a mine, which is formed by the connection of a circuit member, an actuating member and a shoe brake. A starting signal is generated by photoelectricity or manual operation, and a single-time pulse or an interrupting pulse is generated by the circuit member; the pulse is added to a relay by amplification to make a high-voltage power source and a low-voltage power source switched on, the purposes that a power source of a motor is cut off to make an electromagnetic coil 8 in the actuating member energized and an upper armature iron 27 in the coil is attached to drive a mechanical transmission member, a braking arm and a brake shoe connected with the upper armature iron 27 are attained, and the purpose of one-time braking or interrupting braking is attained.

Description

Brake of mine trolley locomotive

The present invention relates to the brake equipment of a kind of mine trolley locomotive under railroad track vehicle, the especially coal mine of traffic and transport field.Mainly be that the parts from starting to actuating outside the block brake are made improvements.Below " mine trolley locomotive " abbreviation " electric locomotive ".

Gait of march is generally at per hour tens kilometers during electric locomotive transportation at present.Under the very special situation of need hard brake stop, cut off the high-voltage suppling power of traction DC series excitation formula motor (hereinafter to be referred as motor) and to change motor be electrical generator by driver's manual mode controller; The electric braking of outer meeting resistance and motor coil power consumption carrying out simultaneously.And generally track cross signaling zone stop be observe red light when bright the driver start to take turns transmission by worm and screw, cross bar, lever connection with hand-screw and spur brake arm at last and make brake shoe remove to be close to locomotive wheel to reach the braking purpose.The locomotive that also has is moved the rim brake transmission with manpower.This personnel selection observation and manipulation meeting may make mistakes, and also need the anxiety of working 2-3 second, driver from starting to the braking beginning.(foregoing is seen " mining electric locomotive " book, the coal industry version, in June, 1976 the first edition)

The objective of the invention is to avoid above-mentioned the deficiencies in the prior art part and design a kind of brake equipment of mine trolley locomotive of automatic S. A. braking of the adapted to cooperation prior art of alternative people's judgement and operation.

Purpose of the present invention can reach by following measure: the present invention is combined with actuating two parts and with prior art by circuit and forms.The circuit spare first order is made up of photosignal transistor amplifier circuit and electric resistance partial pressure signal circuit, and purpose is in order to obtain the signal of startup.In the former circuit, be photoconductive cell, descended by the illumination resistance and make collecting electrode output negative going pulse that collecting electrode is connected with the next stage input end by electric capacity, switch as the last bias resistor of transistor base voltage bias.The latter circuit is made up of two series resistances that are connected across circuit power the two poles of the earth, two resistance points of contact are connected with the next stage input end, when artificially making the resistance of that resistance on a termination power ground be zero, be equivalent to import a underswing for the next stage input end with switch.The filament lamp that photoconductive cell is carried out illumination is suspended on the tunnel wall, has with a certain distance from the signaling zone red light, connects with red light on the circuit, and two wigwags are synchronous.The second stage is integrated package forward time-delay single and interrupting pulse generation circuit.This grade receive take place after the negative going pulse the different single positive pulse of two time-delays, at the corresponding levels self produce the vibration square wave and to these three kinds of pulses carry out the logic operation combination and through the transistor base collecting electrode amplify obtain interrupted earlier after the consecutive pulses signal.By select switch and line, resistance can with above-mentioned single or interrupting pulse input next stage.The third stage is transistor buzzer warning circuit and transistor relay high-low voltage power source on-off control circuit, when above-mentioned pulse adds to the base stage of transistor oscillating circuit, and piezo work sounding on the collecting electrode.When the trigger action transistor base, relay work on the collecting electrode, low potential source is connected DC contactor and is made the motor outage, makes high tension supply input magnet coil produce magnetic force simultaneously.Actuated piece has by steel and is surrounded by empty uncovered cylinder at the end, and interior dress multiturn screw actuator magnet coil, two the end of a thread are drawn and linked to each other with circuit spare third stage control circuit with plug by cable.Two column armature block are arranged up and down in the coil, lower armature and cylinder base are fixed, between the uncovered guide rod axle sleeve that passes, fusing of the ferromagnetic post of uplink and its upper end with the screw flight three, pass a tension bar in the axle sleeve, the cylindrical screw pressure spring that is enclosed within on the tension bar is arranged on its head portion packing ring, the spring upper end contacts with a guide pin bushing bottom of passing tension bar, guide pin bushing in axle sleeve and between to be threaded, it is director that the cylinder top is fixed with cylindrical sleeves, axle sleeve can be made running-fit within it, and the tension bar top is connected with joint and can passes through connecting rod, pull bar links to each other with the brake shoe brake arm.When above-mentioned magnetic force produced, the strong fast suction of the ferromagnetic post of uplink was to lower armature, thereby the also equidirectional action of above-mentioned axle sleeve guide pin bushing, by the also equidirectional action of stage clip power transmission tension bar, thereby brake arm pulling reaches the braking purpose, and braking produces and pulse synchronization, and braking time is consistent with pulse width.

Purpose of the present invention can also reach by following measure: in the photosignal transistor amplifier circuit of the first order, and base stage string one reversal connection stabilivolt, base stage connects an electric capacity over the ground.The integrated package input end connects an electric capacity over the ground in the second stage, improves antijamming capability.Switch also is set in the second stage, manually removes impulse singla.The stage clip that tension bar passes in actuated piece can be selected spring suit not of uniform size, that rotation direction is opposite and connect.Distance can actually be determined between red light and the filament lamp.

The present invention contrasts prior art owing to increased the device of dynamo-electric combination, and on probation showing has easy for operation, reaction and braking is fast, braking force is strong through the colliery, and advantage such as obviously reduce labor intensity.Specifically, feasible quicker more errorless with incandescent lamp as light source, electrooptical device and corresponding antijamming blackout than the human eye judgement, be not subjected to artificially to reach interference such as electromagnetism yet, simple and reliable.The braking of two kinds of pulse signal startings is to have adapted to different situations in service, and load is heavy, selects cadence braking proper when the road surface is steep, intermittently disposable thereafter braking earlier, automatic guidance frequency and dynamics that brake shoe is exerted pressure.When emergency braking, available manually obtaining starts behind the speed-slackening signal better than simple electric braking with electric braking again, also can play protection motor and mechanical action.Former Block brake device is connected with this actuated components, installs simply, does not also disturb between the two also and can cooperate, and it is little to take up space.This device actuated piece material also is common, and column is many, the simple moistureproof shockproof also very easy solution of processing.Be suitable for too at the ground rail travelling brake after closing photosignal.

Below in conjunction with accompanying drawing and specific embodiments the present invention is elaborated again.

Fig. 1 is a circuit block electrical schematic diagram in the brake equipment of the present invention.

Fig. 2 is actuated components structure principal section figure in the brake equipment of the present invention.

Fig. 3 is an actuated piece scheme of installation in the brake equipment of the present invention.

Know that by Fig. 1 circuit spare of the present invention, the photoelectricity that photoconductive cell constitutes receive on head is incorporated into transistor VT1 by socket CZ3 the base stage resistance partially, trimmer potentiometer RP1 scalable photometer head receiving sensitivity.Photometer head can be contained in the electric locomotive cephalic region in practice, filament lamp is on the tunnel wall, and distance is at 0.5 meter to 2 meters between them.Reversal connection stabilivolt VD1 makes photosignal in the above conducting of 4.2V between inclined to one side up and down resistance point of contact and VT1 base stage.The VT1 collecting electrode is exported underswing by connection capacitor C 2, toggle switch SA1 to 6 pin, 8 pin of IC1, be connected across both ends of power with substitutional resistance R2R3 series connection simultaneously, its point of contact is the input end of 6 pin, 8 pin of the mouth of SA1 and IC1, and at the R3 two ends and meet normally open push button switch SB1, press when no photosignal, R3 shorted to earth, voltage are zero, can regard as 4.5V pulse of IC1 input, also be that the people is for obtaining the startup speed-slackening signal.Parallel capacitance C34.7 μ f on R3, parallel capacitance C1 μ f is anti-radio-frequency interference on RP1, and SA1 is called signal switch, and SB1 is called brake switch.In the pulse generating circuit of the second stage, IC1 is NE556C for the dual time base circuit integrated package, IC2 is that four NAND gate circuit integrated packages are CD4011BE, after IC1 input VT1 underswing, about 12 seconds and two about 30 seconds forward delay pulses producing respectively at 5 pin, 9 pin of IC1,13 pin, 1 pin that connects and be input to IC2 by line, and together with IC2 and peripheral capacitor C 9,3 seconds cycles that the oscillator that resistance R 7R8 forms produces, 1: 1 square wave of 1.5 seconds of width in IC2 the NAND operation combination results from 3 pin and through transistor VT2 base collector amplify again by toggle switch SA2 output be one interrupted earlier after consecutive pulses, promptly earlier by 3 seconds 4 cycles, interrupted square wave and follow-up 18 seconds delay pulse that width constituted in about 1.5 seconds are formed signal jointly, are called for short interrupting pulse.Toggle switch SA2 can be divided into interrupting pulse and is output as 1 grade like this, 2 gears is connected with 1 pin of IC2 makes 30 seconds delay pulse output shelves, and this pulse claims simple subpulse, and 2 grades is the single pulse shelves.4 pin, 6 pin at IC1 connect capacitor C 8 over the ground, and on C8 and meet normally open push button switch SB2, C8 short circuit over the ground can make the single pulse of IC1 remove forced resetting when hand push button, reach to finish the purpose of braking in advance.SB2 is called the braking halt switch.In generation of third stage buzzer and on/off control circuit, single that selects by SA2 or interrupting pulse are wherein leaded up to resistance R 11 and are input to the base stage of transistor VT3, the feasible transistor oscillation power work of forming by VT3-VT7, piezo F1 sounding alarm on the VT7 collecting electrode, single pulse is continuous sounding, interrupting pulse is that sounding stopped again 1.5 seconds in 1.5 seconds, 3-4 time repeatedly, and then sounding is about 18 seconds.Another road is input to the base stage of transistor VT8 through resistance R 21, make relay K 1(JZC-21FB on the collecting electrode) work, its contact K1-1 and high-voltage relay K2(JAC-5) be to be connected in series and to be connected across low potential source the two poles of the earth, the K1-1 contacting causes K2 work, make double-contact K2-1 in parallel, K2 '-2 connects, because the magnet coil in the actuated components is communicated with by cable plug and socket CZ5, and the contact of 250 volts of DC high-voltage power supplies that the power transformation net comes by CZ4 and K2 is connected in parallel on the CZ5 two ends, so magnet coil gets electric generation magnetic force.In addition, because the conducting of the work of K2 and K1-1 makes that the socket CZ2 that is attempted by on the K2 is charged, if can cut off the motor power supply by breaker devices such as the external DC contactor of CZ2 two jacks.If the charged braking of motor then CZ2 is vacant.At foregoing circuit, so-called low-voltage dc power supply is meant from power transformation Netcom crosses the power supply that DC power convertor is come, nominal voltage 24V, CZ1 introduces this circuit by socket, so-called high-voltage DC power supply is also from electrical network, 200 volts-300 volts of its scopes, nominal voltage 250V, it also is the motor power power supply, low-voltage dc power supply supplies this circuit part first through 9 volts of voltages of integrated package of pressure-stabilizing IC3 output, secondary and buzzer generation circuit use, and VD2-VD4 is low repoussage diode, and VD4 is anti-reverse power supply, VD5 is a high-voltage diode, and LED1-LED3 is that light emitting diode lamp is used to refer to low potential source respectively, situation such as high tension supply and closing coil thereof.

Know by Fig. 2, actuated piece of the present invention has bottom crown 1, pole shoe 7, the hollow circuit cylinder steel body that top crown 12 surrounds, steel is No. 45 forged steel, each is with screw 6 between them, 11 are connected, interior sky be close to the magnetic boots on vibration-stopper gum pad 9 is housed between bottom crown, 4, coil holder 5 is installed in it, wind on the coil holder with closed enamel-cover magnet coil 8, line is through 0.62 millimeter, 6500 circles, the coil overall diameter is 172 millimeters, and coil two the end of a thread pass through from the side with screw 28, line ball rubber band 29, line ball seat 30, joint that line ball swivel nut 31 is formed and cable 32 and draw and be connected with CZ5 among Fig. 1.Cavity respectively has the armature block of 100 millimeters of cylindric diameters up and down in coil, make with the A3 steel, lower armature 3 is fixed by pole plate under screw 2 and the post, the ferromagnetic post 27 of uplink fuses with screw thread and spring guide axle sleeve 16 and three own by armature connecting screw rod 26 and stretches out cylinder, the upper open end of axle sleeve 16 is connected with the regulating spring guide pin bushing 21 of hollow with screw thread, pass tension bar 20 at guide pin bushing and axle sleeve internal cavity, the tension bar head portion is placed packing ring 25, on it and pass tension bar and be nested and fix small one and large one two stage clip 24,23, the big cover of two springs is little, rotation direction becomes suit on the contrary and connects, packing ring 25 is fixed with the stage clip lower end, the fixing upper end of stage clip on the protrusion annulus of guide pin bushing upper end, there is a clamp nut 22 to use by fastening guide pin bushing at the axle sleeve top, tension bar passes guide pin bushing, and movable with it flush fit, the tension bar top is by screw 18, jam nut 19 is fixedly connected with regulating linkage connector 17, whole from the uplink iron prop to by spring bonded assembly tension bar and regulate this member of linkage connector and cooperate with 0.2 millimeter gap activity by axle sleeve 16 and the director 15 that is fixed in spring washer 13 and screw 14 on the cylinder top crown 12.When from cable input high-voltage dc voltage, the ferromagnetic post of uplink is fast effectively to the lower armature adhesive, and the adhesive stroke distances is 35 millimeters, at this moment screw rod 26, axle sleeve 16, all equidirectional action of guide pin bushing 21, and guide pin bushing plays compression to stage clip, and stage clip promotes packing ring and tension bar motion.

Know by Fig. 3, the bottom crown of above-mentioned actuated piece is fixed on by screw and becomes horizontal on the locomotive wallboard, be handwheel worm screw actuated piece assembling distribution situation commonly used in its underpart, screw rod 35 is when turn, become helicitic texture bonded assembly cross bar 34 to move forward and backward with it, for cooperating with the present invention, wear with the perforate of cross bar two ends between two lever connections 36 in cross bar and both sides that up and down the jaw two two-phase activities of two grooved bore are chimeric with screw rod and with lever connection one end, cross bar 34 can be puted forth effort on the right of groove manually the time, still spurs retarder location bar 36 and brake arm 38 and finishes Block brake.Actuated piece assembling of the present invention must and connect a connecting rod 37 at two brake arms, in the middle of connecting rod, fix a pull bar 39 again, choosing size makes pull bar 39 be connected with the adjusting linkage connector 17 of actuated piece tension bar upper end, when magnet coil is switched on, linkage connector 17 pulling pull bars 39, consequently spur brake arm reaches braking to connecting rod 37, this moment, manually only flute profile joint activity cross bar 34 was not moving because of flute profile joint reason with lever connection 36, and only manually the time because 35 millimeters strokes are arranged, tension bar 20 is shunk back in cylinder and can be realized, and do not have how many resistances, such two kinds of brakings respectively do not hinder works in coordination.

Claims (2)

1, a kind of brake equipment of mine trolley electric locomotive has block brake and is attached thereto the brake arm that connects transmission, and the present invention is characterised in that:

This device also has

(a) actuated components and circuit block, the joint of actuated piece is connected with above-mentioned brake arm by pull bar, connecting rod, and actuated piece and circuit spare pass through cable connection,

(b) circuit spare is made up of three grades of circuit, the first order has photosignal transistor amplifier circuit and electric resistance partial pressure signal circuit, wherein the last inclined to one side resistance of transistor base is photoconductive cell, collecting electrode passes through electric capacity, switch is connected with the next stage input end, other has two resistance that are connected across these level power supply the two poles of the earth is that series connection and series connection point are connected with the next stage input end, when photoconductive cell is subjected to the signal white light according to back or artificial when closing that to open that resistance that bypass makes an above-mentioned termination power ground be zero, collecting electrode or resistance contact are exported negative going pulse to next stage, the second stage is for integrated package forward time-delay single and continue pulse generating circuit, the different single positive pulses of two time-delays take place in this level after the input of upper class negative going pulse, at the corresponding levels in addition from producing the vibration square wave, and realize to these three kinds of pulses carry out the combination of logic fortune place and through the transistor base collecting electrode amplify obtain interrupted earlier after continuous positive pulse signal, pass through select switch, resistance is with above-mentioned single or interrupted pulse input next stage, the third stage is a transistor buzzer alarm control circuit, and transistor relay high-low voltage power source on-off control circuit, piezo work sounding on the collecting electrode when above-mentioned pulse adds to the base stage of transistor oscillating circuit, relay operating contact closure on the collecting electrode when adding to another transistor base, low potential source is connected and the work of motor breaker device, high tension supply is connected and is imported above-mentioned actuated piece magnet coil by cable simultaneously

(c) actuated components is the uncovered steel column of interior sky, interior dress screw actuator multiturn magnet coil, two column iron blocks are arranged in the coil, lower armature is fixed on the post base, the ferromagnetic post of uplink is by the internal and external threads of screw rod and the three in one that links to each other respectively from the uncovered guide rod axle sleeve that passes of cylinder, the tension bar that has a cylindrical screw pressure elasticity to pass in the shaft sleeve, one of stage clip is on bar head portion packing ring, the other end with pass tension bar and in axle sleeve and with axle sleeve, contact with internal and external threads bonded assembly guide pin bushing bottom, cylinder upper end overhead one cylindrical sleeve cartridge type, axle sleeve can be made the director of running-fit within it, joint is arranged at the tension bar top, when magnet coil get electric after, ferromagnetic post of uplink also directly drives the axle sleeve guide pin bushing to the lower armature adhesive in it, and by stage clip drive tension bar and joint thereof, pull bar, connecting rod, then the two-phase activity is chimeric links to each other with the screw rod two on the jaw of two grooved bore up and down and the cross bar two ends for brake arm and brake shoe, the other end of the existing lever connection in hand braking of an end and brake arm also bonded assembly.

2, the brake equipment of a kind of mine trolley locomotive according to claim 1 is characterized in that:

(d) photoconductive cell of the circuit spare first order is the A90.13 of West Germany Heyman company, transistor is CS9011C, its substrate reversal connection stabilivolt makes photosignal in the above conducting of 4.2V, it is 1 μ f and 4.7 μ f that base stage and second stage input end connect electric capacity over the ground, second stage integrated package is that dual time base circuit ic chip 1 is that NE556C and four NAND gate circuit ic chips 2 are CD4011BE, produced respectively about 12 seconds and two about 30 seconds direct impulses are input to 13 pin, 1 pin of IC2 from 5 pin, 9 pin of IC1, and 3 seconds cycles producing of the oscillator of forming with IC2 and peripheral resistor-capacitor unit together, 1: 1 square wave of 1.5 seconds of width carry out in IC2 that NAND operation is combined in that 3 pin produce and through transistor and toggle switch be output as one interrupted earlier after consecutive pulses, promptly earlier by 3 seconds 4 cycles, the interrupted square wave that width constituted in about 1.5 seconds and follow-up common signal of forming of 18 seconds delay pulses are interrupting pulse, by select switch 30 seconds single forward of above-mentioned time-delay or interrupting pulse are imported the transistorized base stage of next stage, make relay K 1(JZC-21FB-24V on this pipe collector) conducting work, because its contact and another high-voltage relay K2(JAC5) be to be connected in series and both are connected across low potential source the two poles of the earth, its double-contact K2-1 in parallel of K2 conducting work, K2-2 connects, make 250 volts of DC high-voltage power supplies connection magnet coils that come from the power transformation net, by be connected in parallel on socket on the K2 can external DC contactor etc. breaker device such as motor cut-off switch etc., in foregoing circuit, low-voltage dc power supply is to cross DC power convertor from power transformation Netcom, its nominal voltage 24V, high-voltage DC power supply is also from the power transformation net, its nominal voltage 250V, it also is motor power, above-mentioned low-voltage dc power supply supplies this circuit part first through integrated package of pressure-stabilizing output 9V, secondary and phonation circuit

(e) actuated piece cylinder material is No. 45 forged steel, the electromagnetic wire astragal is through 0.62 millimeter, 6500 circles, the coil overall diameter is 172 millimeters, the armature diameter is 100 millimeters, A3 steel, last lower armature adhesive stroke distances is 35 millimeters, the cylindrical screw stage clip is by not of uniform size, the opposite suit of rotation direction and connect and form, connecting rod is a crossbeam and two brake arms is connected, a pull bar is fixed in the intermediate portion, the adjusting linkage connector of pull bar and actuated piece tension bar upper end is linked, and actuated piece base bottom crown is fixed on the vertical car wallboard by screw.

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