CN2050192U

CN2050192U - Accumulate time-meter

Info

Publication number: CN2050192U
Application number: CN 89209306
Authority: CN
Inventors: 徐杰
Original assignee: SHENYANG MINING MACHINERY PLANT
Current assignee: SHENYANG MINING MACHINERY PLANT
Priority date: 1989-07-04
Filing date: 1989-07-04
Publication date: 1989-12-27

Abstract

The utility model relates to an accumulative type time-meter for motor vehicles, composed of a panel, a housing, a time-base circuit control board installed in the housing, and a mechanical counter driven by electric magnet. An overvoltage protective circuit, a secondary voltage stabilizer, filtering network, a time control magnifying driving circuit, and an indicator circuit with timing glittering operation. The utility model has the advantages of compact structure, simple installation, convenient installation, low cost, accurate timing, high reliability, and good versatility. Besides, the utility model does not need any peripheral transfer element, can normally work under the condition of the large voltage fluctuation, and can display and remain the accumulative hours of the operation of the motor vehicles under the state of poweroff.

Description

Accumulate time-meter

The utility model relates to a kind of formula motor vehicle timing that adds up with table, is particularly suitable for the engine of engineering machinery, earth moving machinery, tractor etc. and the stopwatch that adds up that complete machine work timing is used.

Domestic various motor vehicles such as engineering machinery, earth moving machinery etc. mostly adopt mechanical type equivalent stopwatch at present, this stopwatch is that the revolution needs equivalent conversion according to motor car engine operation demonstrates equivalent working time, and the drive mechanism complexity of this table, easy to wear, and to pass through peripheral transmitting elements such as speed reduction unit, flexible axle and be connected, numerous and diverse, use inconvenience is installed with equipment under test.The present electronic type stopwatch that uses, though directly the service hours of display machines motor vehicle engine need peripheral transmitting elements such as speed reduction unit, rotating shaft and driver to be connected with equipment under test equally, because of its installation, the maintenance numerous and diverse, manufacturing cost is higher, so be difficult for applying.

The purpose of this utility model is to provide a kind of improved stopwatch that adds up.This list structure compactness, installation is simple, convenient, does not need other any peripheral transmitting element can add up the working time of measuring machine motor vehicle engine.Accurate timing is reliable, and versatility is good.

The purpose of this utility model is achieved in that this stopwatch is made up of panel, housing and the time base circuit control panel, the solenoid actuated formula mechanical counter that are contained in the housing.Be assembled with by diode D on the time base circuit control panel ₁, resistance R ₁, capacitor C ₁With voltage stabilizing diode D ₂The overvoltage crowbar of forming; By resistance R ₂, dichromatic LED LED ₁Voltage stabilizing diode D ₃The input system voltage superpressure of forming monitors acknowledge circuit, by integrated voltage stabilizer IC ₁, IC ₂And capacitor C ₂, C ₃, C ₄Secondary voltage stabilizing and the filter network formed; And mainly by integrated voltage stabilizer IC ₃, IC ₄, triode BG ₁, with dual color light emitting diode LED ₁The time control amplification driving circuit of forming and the working indicating of regularly glistening.

Because the utility model adopts two-stage voltage regulation filtering network, time control amplification driving circuit and the working indicating of regularly glistening, so this table is connected with use between the machine and does not need other peripheral transmitting element, only need the signal power source extension line plug of table is connected on the generator neutral point " N " of motor car engine, other end socket is connected with the shell of motor car engine, just can realize the work formula that adds up of machine is moved timing.Therefore, this table syndeton is simple, and fitting operation is convenient, and use cost is low, and versatility is good.And can be under the bigger situation of operating voltage fluctuation operate as normal, the accumulative total working time that can also under the state of device powers down, show and keep motor vehicle.Dichromatic LED in the circuit, its flashed green shows operate as normal; Red display voltage superpressure plays supervision, warning effect.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a kind of concrete structure synoptic diagram of the present utility model.

Fig. 2 is the utility model electrical schematic diagram.

Fig. 3 is the utility model principle of work block scheme.

Describe concrete structure of the present utility model in detail according to Fig. 1-3.This stopwatch comprises panel 6, housing 3 and is contained in time base circuit control panel 4, solenoid actuated formula mechanical counter 5 and plug 1 in the housing 3, socket 2.On time base circuit control panel 4, be equipped with by diode D ₁, resistance R ₁, capacitor C ₁With voltage stabilizing diode D ₂Anti-phase and the superpotential absorption holding circuit of the voltage both positive and negative polarity of forming; By resistance R ₂, dichromatic LED LED ₁(connecing the emitting red light terminals), voltage stabilizing diode D ₃The input system voltage superpressure of forming monitors acknowledge circuit, can monitor warning to the electricity generation system of tested machine; By integrated voltage stabilizer IC ₁IC ₂And capacitor C ₂, C ₃, C ₄The two-stage voltage stabilizing machine filter wave network of forming.IC wherein ₁Voltage stabilizing output both supplied with IC ₂, supply with drive magnetic DZ again, write down by the digital wheel of electromagnet DZ control mechanical counter again and show timing numerical value.And integrated voltage stabilizer IC ₁Another output supplied with IC again ₂Input end, by IC ₂Carry out second level voltage stabilizing, and the output of this one-level burning voltage is exactly to supply with time base circuit control section ic chip ₃, IC ₄, triode BG ₁With timing flashing diode LED ₁(connecing the green emitting terminals) etc. carry out that time signal is handled, control.The time base circuit ic chip ₃Peripheral element R ₃, R ₄, R ₆Be to guarantee ic chip ₃The adjustment resistance of work.Pot R wherein ₇Be the frequency trim pot, it and capacitor C ₆Cooperatively interact and be used for adjusting ic chip ₃Time base output.Capacitor C ₅It is ic chip ₃The shunt capacitance of work also is to be used for guaranteeing ic chip ₃Steady operation.IC ₃Timebase frequency output by IC ₃Output terminal directly import IC ₄Input end, IC ₄Play frequency multiplication, frequency division effect here.IC ₄Time-base signal by IC ₃Input is through IC ₄Behind the frequency division by two-way output wherein one the tunnel through C ₇, R ₁₀, by C ₇Charging process offer triode BG ₁Base current, make BG ₁Conducting, at this moment, the drive magnetic DZ turn-on current of counter advances the counter carry to show the working time.Wherein be connected in parallel on the diode D on the electromagnet DZ ₄Be the back-emf when being used for absorbing electromagnet and disconnecting, purpose is other element for holding circuit, prevents to be punctured by too high inverse voltage.Triode BG ₁Resistance R in the base circuit ₈With diode D ₅Be to capacitor C ₇Play discharge process, be used for keeping capacitor C ₇The cyclic process that discharges and recharges.Resistance R ₅Be to be ic chip ₄Working power is provided.By IC ₄Another road of output is then by step-down resistance flowing resistance R ₉Receive dichromatic LED LED ₁The green emitting terminals, show for the operate as normal of stopwatch circuit provides the work of regularly flash of light.

Be installed in this stopwatch on the bridge instrumentation dish during use or on other appropriate location, signal power source extension line plug 1 is inserted on generator (alternator) neutral point " N " of motor car engine, other end socket 2 is connected the work that just can realize the machine timing that adds up with the shell of motor car engine.The timing that adds up can reach 9999.99 hours, restores automatically then and restarts the timing that adds up.

Claims

1, a kind of stopwatch that adds up that is used for motor car engine and complete machine work timing comprises panel, housing and housing interior time base circuit control panel and solenoid actuated formula mechanical counter is housed, and it is characterized in that being assembled with by diode D on the time base circuit control panel ₁Resistance R ₁, capacitor C ₁With voltage stabilizing diode D ₂The overvoltage crowbar of forming; By resistance R ₂, dichromatic LED LED ₁, voltage stabilizing diode D ₃The voltage superpressure of forming monitors acknowledge circuit; By integrated voltage stabilizer IC ₁, IC ₂And capacitor C ₂, C ₃, C ₄Secondary voltage stabilizing and the filter network formed, and mainly by integrated voltage stabilizer IC ₃, IC ₄, triode BG ₁With dichromatic LED LED ₁The time control amplification driving circuit of forming and the working indicating of regularly glistening.