• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Abnormal conditions of the engine and auxiliary machines mounted on a construction equipment are detected by sensors and individually displayed by a plurality of abnormal condition display circuits connected to respective sensors, for the purpose of alarming and displaying any one of the abnormal conditions there are provided a logical sum circuit connected to receive abnormal signals from all abnormal condition display circuits and an alarming circuit energized by the output from the logical sum circuit for giving audible and visible alarms. Further, there are provided a delay circuit connected to receive the output of a sensor provided for the engine system and a deceleration mechanism operated by the output from the delay circuit for decreasing the speed of the engine or stopping it when an abnormal condition occurs in the engine system.
    公开号:SU912050A3
    申请号:SU752169004
    申请日:1975-08-29
    公开日:1982-03-07
    发明作者:Харазое Есиаки；Кураками Сигеру；Окамото Мичио；Хасегава Ичиро
    申请人:Кабусики Кайся Комацу Сейсакусе (Фирма)；
    IPC主号:
    专利说明:

    FIG. 1 shows a bulldozer with a bulldozer work monitoring device installed on it, side view; Fig, 2 is a block diagram of the device; in fig. 3 data output display panel; in fig. t is a circuit diagram of an integrated unit; in fig. 5 deceleration mechanism design; in fig. 6 is a warning signal deletion circuit. The control device of the bulldozer (Zera is mounted on a bulldozer, |: which has the main chassis frame 1, carried by endless tracks 2. The pillar 3 is mounted on the front (front) side of the main chassis frame 1 and is controlled in the vertical direction by the lift cylinder 1. A diesel engine 5 for moving and performing the operating functions of the bulldozer is mounted on the forward protruding part of the main frame 1. Various sensors are mounted on the diesel engine 5 and different parts of the frame 1. In the display unit 6 A water level sensor 7 is installed, for example, in a float switch bidet.Radiator 6 is located in front of the engine 5 for detecting the level of cooling water in radiator 6. In the circulation pipe 8 there is a temperature sensor 9 in the form of, for example, a thermal switch for circulating cooling water through the radiator 6. The speed sensor 10 is in the form of, for example, a latch switch for detecting the engine speed and the oil pressure sensor 11 in the form of, for example, a pressure switch for detecting the pressure of oil and are mounted on the engine. A sensor 12 detecting the blockage is installed for the air filter 13 located in the air intake duct. On the rear side of the driver's seat 14 in the fuel tank 15, an oil filter plugging sensor 16 is arranged in the form of, for example, a differential pressure switch. The device also contains a sensor 17 for blocking the lubricating oil filter, a diesel fuel quantity sensor 18, a friction brake belt wear sensor 19, a torque converter oil temperature sensor 20 in the form of, for example, a thermal switch. The sensors 17-19 are connected to the display panel (on the visual output) 21, mounted on the dashboard 22 in front of the driver's seat Il, through a diagram (Fig. 2). The indicator panel 21 and the circuit (FIG. 2) (excluding various sensors) are encased in the housing 23, and the instrument panel 2 is mounted on the front end of the housing 23 (FIG. 3) A variety of indication means, such as light emitting diodes, are mounted on the instrument panel 2k along the horizontal line. The abnormal condition indicator 34, buzzer 35 control switch 36 for checking the condition of various parts, (And the manual switch 37 used in an emergency situation are also mounted on the instrument panel 2 (Fig. 2). The block diagram (Fig. 2) includes ten valve circuits OR for the respective sensors 7. 9, 10, 11, 13, 16, 17 18, .19 and 20. The valve circuits OR 39 through 7 inclusive, respectively, are connected to normally closed sensor contacts through integrated circuits, respectively, in while the valve circuit OR 38 is not connected generally with a normally closed contact of the engine speed sensor 10. Each OR gate circuit is designed to produce an output signal whenever the input signal is fed to either one of its two inputs. One inputs of the corresponding gate circuits OR are connected to the corresponding sensors and the other inputs are connected together with the normally closed contacts of the control switch 36. The integrated circuits 48-56 are used to prevent incorrect operating modes caused by a change in levels in the liquid due to vibrations or rattle sensor contacts. FIG. shows one example of an RC integrated circuit used as t8-56 integrated circuits. A counter 57 is connected between the output of the OR circuit circuit 38, connected to the engine speed sensor 10 and the abnormal state indication means 2k, the counter 57 being normally controlled by the generator 58 by means of a pulse signal having a frequency corresponding to an overestimated engine speed. Between valve circuits OR "2, 1 and 6
    respectively, connected to the radiator water level sensor 7, the engine lubricating oil pressure sensor 11 and the corresponding means 28, 27 and 32 for indicating an abnormal condition, delay circuits 59 60 and 61 are connected to withstand a predetermined interval of signals attached to the means 28, 27 and 32 indications from the corresponding sensors.
    The display means, respectively, connected to the engine speed sensor 10, the engine water temperature sensor 9, the oil temperature sensor in the torque converter and the engine pressure sensor 11 are connected to the inputs of the valve circuit OR 62, while the rest 28-33 indications are also connected to the inputs of another valve circuit OR 63. The output of this valve circuit OR is connected to the device 3 indicating an abnormal state, for example, a red lamp and a buzzer 35, h Res amplifier 6 and the output of OR gate Scheme 62 is connected to the deceleration mechanism b5 through delay circuit 66 and an amplifier 67. The alarm I manual switch 37 is connected to the connection between delay circuit 66 and amplifier 67.
    The retarding mechanism 65 (Aig. 5) contains an electromagnetic solenoid 68 excited by an abnormal state signal to control a clutch 69 mounted on the shaft 70 of the interlocked slow-down pedal (not shown). A first cam 71 interlocked with an accelerator pedal (not shown), and a second cam 72 interlocked with an engine speed regulator (not shown) are mounted on the shaft 70 and on both sides of the clutch 69.
    The device works as follows.
    During normal operation, the cams 71 and 72 are connected together by the clutch 69 so as to transmit a control force of the accelerator pedal to the engine speed controller. However, when the electromagnetic solenoid 68 is energized by an abnormal state signal, clutch 69
    moves to the position shown in broken lines (Fig. 5.), thus interrupting the connection between cams 71 and 72. In this state, the engine speed control automatically returns to the low idle speed position by means of a return spring (not shown). Taking the clutch 69 out of the clutch state prevents the accelerator pedal from adding engine speed 5. To restore a certain engine speed, the emergency manual switch closes and the accelerator pedal returns to the minimum fuel injection position, thereby creating the possibility of an increase engine speed. Since the emergency switch 37 has an automatic reset to its original position, until the alarm is cleared (the operator releases the emergency switch), the engine will slow down again.
    The lubricant oil pressure sensor 11 in the engine lubrication system is designed to produce an abnormal signal, such as when, for example, the oil pressure drops below 1 kg / cm. So that the sensor 11 can generate an abnormal signal when the gauze pressure is low during the engine start.
    To avoid this, a warning signal circuit is performed for sensor 11, as shown in: FIG. 6. The contact of the oil pressure switch opens when the oil pressure exceeds a certain value, but closes when the oil pressure drops below that certain value. One, PQ pin terminal. is grounded, and the other terminal is connected to one input of the valve circuit. NOT AND N Au | through the inverting element q. The other input of the NOT-AND valve circuit is received so as to receive the input signal C) from a generator (not shown) controlled by the engine, and the output signal from the NOT-AND N A gate circuit represents the engine lubricating oil pressure. This output signal is fed to one input of another valve circuit NOT MI Aj, to the other input of which the signal GJ | from the generator via inverT 5P li. The third input of the NOT AND NL2 gate circuit is supplied with a signal e., From a power source switch (not shown). Since the engine oil pressure is low during the start of the jigel, the Pot contact closes and, accordingly, the level of the signal supplied to the inverter 1 is low (L). Its output will be high (s). During the engine start-up, the C / signal (from the generator is also at a low level (L), the output signal d from the NOT AND N AI valve circuit is at a high level (I). For this reason, when the engine is started, the signal is abnormal Neither oil pressure L is formed. When the engine speed and, consequently, oil pressure increases, contact RD opens so that the output signal cJ will have a low level L, and the output signal C of the generator will have a high level N. It will not form no signal abnormal about oil pressure. If for one reason or another the oil pressure drops, the output signal from the valve circuit is NOT AND N A, will become a low level signal L and thus form an abnormal signal of the oil pressure to actuate the Feeder A warning (alarm) signal .. .The valve circuit is NOT AND H Yes. It is designed to detect the break of the fan belt. When the fan belt of the fan breaks, while the oil pressure is normal, the output signal of the GI generator decreases a. Under these conditions, since the oil pressure is normal, the output signal is c1 / | from the NOT And N gate circuit, the Ad will be at a high level, the output of the generator Ci will be at a low level L, and the voltage of the power source C is at a high level H so that the output from the gate circuit is NOT AND N AX becomes a low signal Lt level, by virtue of which a Signal will be generated indicating the abnormal condition of the valve belt. A circuit for controlling the alarm supply device in response to this signal may be composed as circuitry associated with other sensors. Differential pressure switches are used as sensors for filters 16 and 17 for motor (diesel and engine lubricating oil. However, the resistance of the oil filters varies according to the change in viscosity of the motor (diesel) fuel and lubricating oil. When the oil has a viscosity high, especially during engine start-up, sensors 16 and 17i reacting to the pressure difference between the intake and exhaust sides often form warning signals. This can be eliminated by connecting Normally closed contacts for additional 16.1 and 16.2 diesel and lubricating oil temperature sensors, respectively, in parallel with the main sensors 16 and 1 / (Fig. 8). More specifically, the contacts of the filter plug 16 for the lubricating oil sensor 16 open when the pressure difference drops below a certain value. Similarly, the contacts of the parallel sensor 16.1 of lubricating oil temperature open when the temperature of this oil exceeds a certain value, but they close when the temperature is lubricating of oil falls below a certain value. Accordingly, the level of the output signal S. becomes high only when the contacts of both sensors 1b and 16.1 open. That is, when the difference in pressure and temperature is high. This signal is C2. used as a blockage signal. The use of the device will allow to prevent an emergency during the operation of the bulldozer, to increase the efficiency of control and operation. The inventive device for monitoring the operation of a bulldozer, comprising sensors and a motor controller, display units connected to the sensors and to the inputs of logic elements OR whose outputs are connected to sound blocks
    and light signaling, characterized in that, in order to increase the control efficiency, it is equipped with a circuit connected to logical elements OR, a delay and a deceleration mechanism connected to its output, made in the form of an electromagnetic solenoid and connected to it by a clutch mounted on a shaft, connected to the deceleration pedal, on both sides of which there are two cams, one of which is connected to the accelerator pedal and the other to the engine state controller.
    12050 10
    Sources of information taken into account in the examination
    1. US Patent No. 3597729, cl. 3 "0-52, 1970.,
    five
    2. US patent number Z 31555, class. 3 "0-60,: 9b7.
    3. The US patent to 3866166, 10 cl, 1975.
    i. US patent number 3893108, cl. H 0-420, 1977.
    5. USSR author's certificate ts N- .268183, cl. E 02 F 9/20, 1968.
    9 V
    22
    15 "
    Q
    .З.
    权利要求:
    Claims (1)
    [1]
    Claim
    A device for monitoring the operation of a bulldozer containing sensors and an engine state controller, display units connected to sensors and to the inputs of logical elements OR, the outputs of which are connected to sound units
    9 912050 10 and light signaling, characterized in that, in order to increase the monitoring efficiency, it is equipped with a delay circuit 5 connected to the OR logic elements and a deceleration mechanism connected to its output, made in the form of an electromagnetic solenoid and a clutch connected to it, mounted on a shaft connected 10 to the deceleration pedal, on both sides of which two cams are installed, one of which is connected to the accelerator pedal, and the other to the engine state regulator. fifteen
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    同族专利:
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    引用文献:
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    RU2643389C2|2012-12-03|2018-02-01|Дир Энд Компани|Hydraulic control system and method, based on use of auxiliary working tool|US3431555A|1966-06-01|1969-03-04|Anthony J Leone|Oil pressure guardian|
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    US3597729A|1968-12-04|1971-08-03|Ford Motor Co|Automotive vehicle condition indicator|
    JPS5148341B2|1972-10-18|1976-12-20|
    US3949356A|1973-05-14|1976-04-06|Caterpillar Tractor Co.|Vehicle systems monitor discriminating between emergency conditions and deferrable maintenance needs|
    US3893108A|1973-12-20|1975-07-01|Texas Instruments Inc|Internal combustion engine protection circuit|
    US3866166A|1974-04-09|1975-02-11|Gen Motors Corp|Digital multigage for motor vehicle|
    US3964018A|1974-10-29|1976-06-15|Kysor Industrial Corporation|Vehicle monitoring system with fault override|JPS5720428Y2|1976-04-30|1982-05-01|
    US4184146A|1977-04-28|1980-01-15|Caterpillar Tractor Co.|Warning system|
    US4136329A|1977-05-12|1979-01-23|Transportation Logic Corporation|Engine condition-responsive shutdown and warning apparatus|
    FR2461261B1|1979-07-11|1981-07-17|Cit Alcatel|
    DE7923500U1|1979-08-17|1981-02-19|Robert Bosch Gmbh, 7000 Stuttgart|ELECTRIC HAND TOOL|
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    FR2482229A1|1980-05-09|1981-11-13|Ferodo Sa|BRAKE LINING WEAR WARNING DEVICE FOR MOTOR VEHICLE|
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    JPH0649646Y2|1988-09-12|1994-12-14|油谷重工株式会社|Construction machinery monitor|
    DE3839960A1|1988-11-26|1990-05-31|Bosch Gmbh Robert|MONITORING DEVICE FOR A FUEL FILTER|
    US5425431A|1994-02-18|1995-06-20|Clark Equipment Company|Interlock control system for power machine|
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    US20110112740A1|2009-11-11|2011-05-12|Denso Corporation|Control device for internal combustion engine and method for controlling internal combustion engine|
    US20120042961A1|2010-08-20|2012-02-23|Larry Gene Anderson|Method and system for water drainage in fuel system|
    US9732714B2|2010-08-20|2017-08-15|General Electric Company|Method and system for water drainage in fuel system|
    ES2715388T3|2014-02-25|2019-06-04|Saudi Basic Ind Corp|Process to convert hydrocarbons into olefins and BTX|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP9885574A|JPS5424774B2|1974-08-30|1974-08-30|
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