CN2474738Y - Diesel oil engine flame out device of vehicle - Google Patents

Abstract

The utility model provides a diesel extinguisher for a locomotive and essentially comprises a motor, a crank, a connecting bar, a draw rod, a dragline, a switching sleeve, a bottom board, a limit switch, and a control circuit. The utility model is characterized in that two supply lines are respectively connected with a normal open normal close relay. The normal open contact points of the two relays are paralleled and then are concatenated with a protective resistance R6 to be connected with the other end of a power supply. The two relays are respectively connected in a normal turning, a counter-rotating, and a protective circuit of the motor. The extinguisher has the advantages of good reliability and long working life.

Description

The diesel engine for automobile shorting-out device

The utility model relates to a kind of diesel car, used with tractor shorting-out device, closes the shorting-out device of throttle when shutting down from turning in particular for diesel engine for automobile automatically.

Existing a kind of diesel engine for automobile shorting-out device is improved with reference to Chinese patent ZL93237548, and it is made up of mechanical actuating mechanism and electronic control two parts.Mechanical actuating mechanism comprises: worm speed reducer, crank, connecting rod, pull bar, stay cord, reducing sleeve, base plate and slide block are formed; Electronic control part comprises: the control circuit (as accompanying drawing 1) that motor, sensitive switch, relay, triode are formed.Though existing electronic control part is fairly simple, but but there are 3 deficiencies: the one, need sensitive switch to help realize the counter-rotating of motor, because the load capacity of sensitive switch is limited, but to carry whole loads of motor, be easy to cause sensitive switch to ablate: the 2nd, the switch of sensitive switch needs slide block to promote to realize, after in case slide block promotion sensitive switch opens or closes, should keep this state to arrive until next action, therefore slide block should move, the ability that keeps present situation is arranged again, in existing mechanism, what adopt is that friction self-locking mechanism is (as accompanying drawing 2, accompanying drawing 3), by the little spring extrusion screw, the surface of contact of screw and slide block forms frictional force then, make it do the time spent in no external force, frictionally keeps the present situation of slide block, and when slide block need move, frictional force does not hinder slide block movement yet, yet problem is: because of the friction factor of screw and slide block rubbing surface changes greatly, it is subjected to having or not greasy dirt, moistening degree, the influence of surface roughness, this has just determined that the pressure of little spring can guarantee hour also can have enough frictional force to keep slide block stable at friction factor, this has just strengthened extruding force, can make the shoe surface wearing and tearing increase, cause the slide block misoperation; The 3rd, no electric motor protecting will cause the motor overload operation like this because of the inefficacy of a certain element, and motor is burnt out.Can learn existing diesel engine extinguisher poor reliability, operating life weak point from above three problems.

The purpose of this utility model, it does not only have the problem of easy ablation of sensitive switch and slide block friction self-locking poor reliability with regard to providing a kind of diesel engine for automobile shorting-out device, and can also protect over current of motor.

The technological scheme that realizes the utility model purpose is a kind of diesel engine for automobile shorting-out device; it mainly is made up of motor, crank, connecting rod, pull bar, stay cord, reducing sleeve, base plate, limit switch; its special way is that two power lines of motor respectively are connected to a normally-open normally-close relay; the normally opened contact parallel connection of two relays connects the power supply the other end after being connected in series protective resistance R6 again, and two relays are connected among just commentaries on classics, counter-rotating and the protective circuit of control motor.

And, in the circuit of control motor counter-rotating, coil one termination "-" utmost point of relay K 1, the other end with connect "-" utmost point after C, the E utmost point of triode VT1 are connected, resistance R 2 one termination "-" utmost points, the other end with connect "-" utmost point after C, the E utmost point of VT2 are connected, the B utmost point of resistance R 1 one termination triode VT1, the C utmost point of another termination triode VT2, it is extremely in parallel with C, the E of triode VT2 often to open limit switch XL1, connects the leading out terminal K utmost point behind the B utmost point series resistors R3 of triode VT2.

And, in the circuit that the control motor is just changeing, coil one termination "-" utmost point of relay K 2, the other end with connect "-" utmost point after E, the C utmost point of triode VT3 are connected, often open the B utmost point that meets triode VT3 behind the limit switch XL2 one end series connection R5, the other end is connected on power cathode, the resistance R 4 one termination leading out terminal K utmost points, the other end connecting resistance R5 and the contact of often driving limit switch.

And, in protective circuit, connecing " C " utmost point of VT2 after " B " utmost point series resistors R7 of triode VT4, the capacitor C 2, triode VT4 " E " utmost point connects "-" utmost point, connects the normally opened contact of two relays behind triode VT4 " C " utmost point series resistors R8.

As shown from the above technical solution; the utility model has adopted all electronic circuit control mode; existing sensitive switch and friction self-locking formula slide block have been replaced; therefore the problem that no longer has easy ablation of sensitive switch and slide block friction self-locking poor reliability; and, also set up the operating life that the over current of motor protective circuit prolongs shorting-out device in the utility model by rotating and reverse the reliable respectively control motor steering of two circuit.

Below in conjunction with accompanying drawing the utility model is elaborated.

Fig. 1 is the circuit theory diagrams of existing diesel engine for automobile shorting-out device.

Fig. 2 is the mechanical type friction self-locking mechanism of existing diesel engine for automobile shorting-out device.

Fig. 3 is existing self-locking mechanism sectional view.

Fig. 4 is the utility model circuit diagram.

As shown in Figure 4, the diesel engine for automobile shorting-out device that the utility model provides mainly is made up of motor, crank, connecting rod, pull bar, stay cord, reducing sleeve, base plate, limit switch and control circuit, consistent because of the mechanical part of this shorting-out device with prior art, only its control circuit partly is described in detail below.Control circuit in the diesel engine for automobile shorting-out device described in the utility model has three leading out terminals, and "+24V ", "-" are connected on respectively on the automobile power source, and the K utmost point then connects automotive ignition lock, so as with the ignition lock synchronization control.The C of relay K 1 coil and triode VT1, the E utmost point also are serially connected in power supply 24V, negative pole two ends, resistance R 2 also is connected on power supply 24V, negative pole two ends with C, the E utmost point of triode VT2, the B utmost point of resistance R 1 one termination triode VT1, the C utmost point of another termination triode VT2, it is extremely in parallel with C, the E of triode VT2 often to open limit switch XL1, the B utmost point of triode VT2 connects the leading out terminal K utmost point, more than just constitute motor counter-rotating control section circuit; Be connected in series with its E of triode V, the C utmost point again after diode D2 and relay K 2 parallel connections, resistance R 5 and R4 are serially connected in the B utmost point and the leading out terminal K utmost point of triode VT3, often open on the contact that limit switch XL2 one terminates at resistance R 4 and R5, the other end is connected on power cathode, more than just constitute motor and just changeing the control section circuit; Diode D3 is with after C, the E utmost point of triode VT4 are connected in series, the contact of one terminating resistor R4 and R5, another termination power cathode, diode D4 positive pole connects the C utmost point of triode VT2, negative pole connects the C utmost point of triode VT4, and the B of resistance R 6 one ends and triode VT4, E extremely connect the C utmost point that triode V collapses after the parallel connection, another termination power cathode, more than promptly constitute over current of motor protection control section circuit; Two ends in motor D, connect the tip side of normally opened relay K1, normally closed relay K2 respectively, relay K 1 normally-closed contact with connect positive source after relay K 2 normally-closed contacts are in parallel, relay K 1 normally opened contact and the B utmost point that meets triode VT4 after relay K 2 normally opened contacts are in parallel, more than promptly be the complete control circuit of this shorting-out device.When ignition lock is not opened, behind the power connection, if limit switch XL1 is not switched on, triode VT1 conducting at this moment, triode VT2 ends, relay K 1 adhesive, K2 is in releasing state, and the motor counter-rotating is pushed down limit switch by retarder and connecting rod again, motor is stopped operating, finished electrification reset; After ignition lock is opened, triode VT2 conducting, VT1 ends, and relay K 1 is in releasing state, triode VT3 conducting, relay K 2 adhesives, motor just changes, again by retarder and pull bar, the stay cord action realizes the automatic unlatching of throttle, when motor is rotated further, connecting rod moves to when pushing down limit switch XL2, and the B that makes triode VT2 is 0V very, and VT2 is become by conducting and ends, relay K 2 also discharges motor is stopped operating, after this throttle just is in and stays open, and guarantees the diesel engine proper functioning, after closing ignition lock, K utmost point dead electricity, triode VT1 conducting, relay K 1 is in attracting state, and triode VT2 ends, the motor counter-rotating, identical with first electrification reset action afterwards.

The overcurrent protection process of motor is as follows: under standard load; the electric current of motor is arranged on certain value; work as machine operation; when electric current surpasses this value; triode VT4 conducting, diode D3, also conducting of D4 end triode VT1, VT2 simultaneously; relay K 2 discharges; motor stops operating, and after fault was discharged, circuit recovered proper functioning automatically; in addition; when the motor Rotation With Changing to the time, can produce Peak current, can cause the misoperation of protective circuit; therefore in circuit, increase capacitor C 1, C2, thereby dissolve the influence of inrush current when commutating.

Claims (4)

1, a kind of diesel engine for automobile shorting-out device; it is made up of motor, crank, connecting rod, pull bar, stay cord, reducing sleeve, base plate, limit switch etc.; it is characterized in that: two power lines of motor respectively are connected to a normally-open normally-close relay; connect an end of power supply after the normally-closed contact parallel connection of two relays; the normally opened contact parallel connection of two relays connects the power supply the other end after being connected in series protective resistance R6 again, and two relays are connected among just commentaries on classics, counter-rotating and the protective circuit of control motor.

2, diesel engine for automobile shorting-out device according to claim 1, it is characterized in that, in the circuit of control motor counter-rotating, coil one termination "+" utmost point of relay K 1, the other end with connect "-" utmost point, resistance R 2 one termination "+" utmost points after C, the E utmost point of triode VT1 are connected.The other end with connect "-" utmost point after C, the E utmost point of VT2 are connected, the B utmost point of resistance R 1 one termination triode VT1, the C utmost point of another termination triode VT2, it is extremely in parallel with C, the E of triode VT2 often to open limit switch XL1, connects Outlet in the K utmost point behind the B utmost point series resistor R3 of triode VT2.

3, diesel engine for automobile shorting-out device according to claim 1, it is characterized in that, in the circuit that the control motor is just changeing, coil one termination "+" utmost point of relay K 2, the other end with connect "-" utmost point after E, the C utmost point of triode VT3 are connected, often open the B utmost point that limit switch XL2 one end series connection R5 meets triode VT3, the other end is connected on power cathode, the resistance R 4 one termination leading out terminal K utmost points, the other end connecting resistance R5 and the contact of often driving limit switch.

4, diesel engine for automobile shorting-out device according to claim 1; it is characterized in that; in the circuit of protection motor; connect " C " utmost point of triode VT2 after " B " utmost point series resistors R7 of triode VT4, the capacitor C 2; " E " utmost point of triode VT4 connects "-" utmost point, connects the normally opened contact of two relays behind " C " utmost point series resistors R8 of triode VT4.

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