JPH03118693A - Managing system for dump truck for construction machine - Google Patents

Abstract

PURPOSE:To execute summing-up with high efficiency only by inserting a card and to extremely simplify work by providing a vehicle management motor, non-contact card for recording, reading equipment and computer to prepare a management table, etc., from card information. CONSTITUTION:In a vehicle management motor 7, respective output signals from a pressure sensor 6, fuel flow gauges 15 and 16, switch 22 for work check, rotation sensor 19, vessel upper and lower sensor 20 and shift bar sensor 21, etc., are sent through an input interface 23 to an arithmetic circuit 24 and the loading weight of a vessel, vehicle speed, maximum and minimum vehicle speed, fuel consumption amount per traveling distance unit time and working time, etc., are calculated. Then, calculated results are sent to a card reader /writer 26 and recorded to a non-contact card 27 for recording. Each time the key of a power source in a vehicle is turned ON, normality / abnormality is checked by a work check signal and a current state is displayed and recorded to a display 29 and the card 27. Further, the kind of a loading object and an exchange period for oil, fat and filter, etc., are inputted by ten keys 30 and an exchange instruction is displayed as needed and recorded to the card 27.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a management system for dump trucks for construction machinery.

[Conventional technology]

Dump trucks for construction machinery transport large amounts of earth and sand, and the weight of earth and sand transported in one day is the daily workload, so it is difficult to accurately know the weight of earth and sand transported in a day. This is important, and conventionally, the pressure in the suspension cylinder of a dump truck for construction equipment was detected, the weight of the loaded earth and sand was calculated based on the pressure using a microcomputer, etc., and the amount of earth and sand was transported in a day based on the calculated weight of earth and sand. I try to know the weight of the earth and sand by printing it out on my printer.

On the other hand, construction machinery dump trucks weigh many tons and transport tons of earth and sand, so their engines consume a large amount of fuel, and the amount of fuel consumed depends on the driving skill of the operator. They are different, and it is important to know the fuel consumed by the engine, that is, the amount of fuel consumed per unit time. Conventionally, it is important to know the fuel consumed by the engine, that is, the amount of fuel consumed per unit time. Conventionally, it was possible to know the amount of fuel consumed in the fuel tank since the last time it was full. Based on this, the amount of fuel consumed per unit time is determined.

In addition, regarding work inspection items, electronic display monitor
It is possible to visually check whether the brake oil level is normal or abnormal, but it is not recorded.

In this way, various signals from the vehicle are input to each dedicated device, and each device records, displays, etc.

[Problem to be solved by the invention]

To find out the weight of soil transported in a day as described above,
The calculated loaded weights are artificially totaled and the total loaded weight is entered in a management ledger, which is a very troublesome task.

Further, the task of determining the amount of fuel consumed per unit time as described above is very troublesome.

It is difficult for the results of work inspections to remain in records, and if you try to force them to remain, you will have to record them manually. If we were to perform further aggregation, it would be a very troublesome task.

Furthermore, some recordable cards have contacts, but poor contact tends to occur in construction environments where the environmental conditions are poor.

Therefore, an object of the present invention is to provide a management system for dump trucks for construction machinery that can solve the above-mentioned problems.

[Means and actions for solving the problem] The loaded weight is calculated by the pressure gas of the suspension cylinder, and the unloading time, loaded weight, and load type are input using the signals from the vessel upper and lower sensors and the numeric keypad. It memorizes the type, calculates the fuel consumption per unit time based on the fuel flow rate of the engine's fuel supply system, calculates the vehicle speed, maximum vehicle speed, minimum vehicle speed, and travel distance from the output of the vehicle speed sensor, and performs work inspections. Inputs the output of various sensors (brake oil level sensor, engine oil level sensor, radiator water level, etc.), determines whether the inspection result is normal or abnormal, stores it, and measures the working time using the built-in timer. , a vehicle management motor 7 equipped with an input device that can be memorized and input an operator code, vehicle number, etc. using a numeric keypad, and a non-contact recording card 27 that does not have a terminal for recording information of this vehicle management motor 7. A management system for construction machinery dump trucks, which comprises a device that reads information from this recording card 27, and a computer that creates a management ledger or the like based on the read information.

[For production]

By simply inserting the recording card 27 into the vehicle management motor 7 and then into the equipment, the daily weight of transported soil, fuel consumption per unit time, travel distance, vehicle speed, working hours, and work inspection results can be efficiently compiled. This makes the task extremely easy.

〔Example〕

As shown in FIG. 1, a pressure sensor 6 is provided in a front suspension cylinder 4 and a rear suspension cylinder 5 that support front wheels 2 and rear wheels 3 in a vehicle body 1.
The pressure inside each suspension cylinder is detected, and the detected pressure is input to the vehicle management monitor 7.

The fuel in the fuel tank 8 is fed under pressure to the fuel injection pump 12 via the feed pump 9, fuel filter 10, and vibrator 11, and is injected from the fuel injection nozzle 13 into the combustion chamber of the engine (not shown). The fuel is returned to the fuel tank 8 by the return vibrator 14, and the vibrator 11 and the return vibrator 14 are provided with first and second fuel flow meters 15 and 16, and the detected fuel flow rate is monitored by the vehicle management. It is input to the monitor 7. (Depending on the type of injection pump, there may be no need to measure the return flow rate, but in that case, the return flow meter is not used.) The output rotation of the engine is determined by the torque converter 17, the transmission 18, and the propulsion shaft (not shown). A rotation sensor 19 is provided to detect the rotation speed of the output shaft of the transmission 18, which is transmitted to the rear wheels 3 via a differential, etc., and the detected rotation speed is used to calculate the maximum, minimum vehicle speed, and travel distance of the vehicle. The information is input to the management monitor 7.

The vehicle management monitor 7 receives a vessel up/down signal from the vessel up/down sensor 20 (the timing for storing the soil unloading time is based on the vessel up/down signal and a built-in timer), a speed stage signal from the shift lever sensor 21, and a work inspection. A work inspection signal is inputted from each switch 22.

As shown in FIG. 2, the vehicle management monitor 7 sends each signal to the arithmetic circuit 24 via the input interface 23, and outputs the loaded weight of the vessel, vehicle speed, maximum vehicle speed, minimum vehicle speed, fuel consumption per unit time traveled distance. , calculate work time, etc.
These calculation results are sent to the card reader/writer 26 via the card reader/writer interface 25 and recorded on the non-contact recording card 27, and each time the vehicle's power key is turned on, a work inspection signal is sent to the card reader/writer 26. Normal abnormalities are checked and the current status, e.g. radiator water volume,
The amount of fuel, lubricating oil, etc. is displayed on the display 29 via the display interface 28 and recorded on a non-contact recording card, and the type of cargo, oil, and filter replacement period are input using the numeric keypad 30. , Display 29 as necessary
The replacement instructions are displayed on the screen and recorded on a contactless recording card.

Next, an example of calculation of the loaded weight of the vessel will be explained.

When the vessel down signal is input after the vessel up and down signal is input, the total load acting on each suspension cylinder is calculated based on the detected pressure of each pressure sensor 6,
The difference between the vehicle body load when the vehicle is empty and the load stored in advance or calculated when the vehicle is empty is calculated and used as the loaded weight of the vessel.

Next, an example of calculation of fuel consumption per unit time will be explained.

The amount of fuel injected into the combustion chamber is calculated by subtracting the flow rate detected by the second fuel flow meter 16 from the flow rate detected by the first fuel flow meter 15, and the fuel consumption per unit time is calculated based on the fuel and operating time. Calculate the amount.

The recording card 27 is inserted into a card reader/writer 40 and the recorded information is read out and inputted to a hand belt computer 41 for output to a printer 42 or inputted to a personal computer 43 and stored on a floppy disk 44. or fill out the form 45.

〔Effect of the invention〕

By simply inserting the non-contact recording card 27 into the vehicle management monitor 7 and then into the device 40, the daily weight of transported soil, fuel consumption per unit time, mileage, vehicle speed, working hours, and work inspection results can be recorded. This makes the task extremely easy.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory diagram of the entire system, and FIG. 2 is an explanatory diagram of a vehicle management monitor. 7 is a vehicle management monitor, and 27 is a recording card.

Claims (1)

[Claims] Calculates the loaded weight based on the pressure of the suspension cylinder, and stores the unloading time, loaded weight, and type of load along with signals from the vessel up and down sensors and input of the type of load using a numeric keypad. The fuel consumption per unit time is calculated based on the fuel flow rate of the engine's fuel supply system, and the vehicle speed, maximum vehicle speed, minimum vehicle speed, and travel distance are calculated from the output of the vehicle speed sensor.
It also inputs the output of sensors for work inspections (brake oil level sensor, engine oil level sensor, radiator water level, etc.), determines whether the inspection results are normal or abnormal, records them, and uses the built-in timer to You can measure and record your working time using the numeric keypad.
A vehicle management motor 7 equipped with an input device capable of inputting operator code, vehicle number, etc.; a non-contact recording card 27 having no terminal for recording information of this vehicle management motor 7; and this recording card 27. A management system for construction machinery dump trucks consisting of a device that reads the information and a computer that creates a management ledger etc. from the read information.