JPH02209505A - Detection of remaining amount of antifreeze spray agent - Google Patents

Abstract

PURPOSE:To improve spray efficiency by calculating the sprayed amount of antifreeze agent, after setting the amount of antifreeze agent to be put in a hopper, from a transfer-out conveyor speed, a gage opening, a gate width, and the specific gravity of the agent, and calculating and displaying the remaining amount based on the sprayed amount and the amount of the agent in the hopper. CONSTITUTION:On a chassis behind a driver's seat are disposed an antifreeze agent holding hopper 2, a belt conveyor 3 for transferring backward antifreeze agent (a) discharged out of an opening at the bottom of the hopper 2, and a gate 4 to be freely raised or lowered on the back side of the hopper 3. A tachogenerator 8 for detecting the transfer speed is disposed on the conveyor 3 and a potentiometer 10 for detecting the gate 4 opening is disposed on a hydraulic cylinder 9. The weight of the agent (a) passing between the conveyor 3 is calculated from the values detected with the meter 10 and the tachogenerator 8, gate width, and specific weight of the agent (a) according to an equation. This calculation is made at certain time intervals, the calculated result is deducted from the amount put in the hopper and the result is digitally displayed in succession.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for automatically detecting the remaining amount of antifreeze in a hopper when spraying antifreeze on a road surface according to the amount of spraying. It is.

(Prior Art) In order to prevent road hazards such as skidding accidents caused by vehicles running in winter and traffic jams, antifreeze agents have been sprayed onto road surfaces in varying amounts.

In this case, a certain amount of anti-freezing agent is put into a hopper installed at the spray rate, carried out by a conveyor installed below the hopper, and sprayed on the road surface, but the amount decreases depending on the spray rate. It is necessary to check the remaining amount of antifreeze in the hopper, eliminate road surfaces that are not sprayed, enable continuous spraying over the entire length of the road, and ensure smooth supply of the next antifreeze.

Conventionally, a method for checking the remaining amount of antifreeze in the hopper is to install a viewing window with a transparent acrylic plate attached to the front wall of the hopper, and the operator in the driver's seat can look through the window by turning around. A method of visual inspection through a window, or a method of installing discharge confirmation sensors at the top and bottom of the side wall of the hopper and keeping an indicator light on the driver's seat lit while the antifreeze is in contact with the sensor is adopted. There is.

[Problem to be solved by the invention]

However, with any of the above methods, as long as the surface of the antifreeze in the hopper decreases, it will always descend in a horizontal state like the water surface in a tank, and the remaining amount can be confirmed almost accurately. In the case of granular antifreeze, the inner wall of the hopper slopes toward the bottom opening, so that its surface is tilted backwards (therefore, it slopes downward), so even though there is only a small amount remaining, there is still a sufficient amount. However, there is a problem in that it is difficult to accurately confirm the amount remaining.

The object of the present invention is to provide a method for detecting the remaining amount of antifreeze sprayed, which can solve these problems.

[Means for Solving the Problems] In order to achieve the above object, the method for detecting the remaining amount of antifreeze sprayed according to the present invention sets the amount of antifreeze stored in a hopper installed at the spray amount. Later, during operation, the spray amount is determined based on the speed of the conveyor that carries out the antifreeze from the hopper, the opening degree of the gate installed on the conveyance end of the conveyor, the width of the gate, and the specific gravity of the antifreeze agent. The remaining amount of antifreeze in the hopper is calculated and displayed based on the sprayed amount and the amount of antifreeze put into the hopper.

[For production]

First, the amount of antifreeze to be thrown into the spray amount hopper is set and displayed on a display placed in the driver's seat, and the amount is stored.

Next, the specific gravity of the antifreeze to be sprayed and the gate width when discharged from the conveyor are set on the display, and the gate opening degree and belt conveyor speed during operation are detected. The amount of antifreeze sprayed during operation is calculated at short intervals from the numerical value, the specific gravity of the antifreeze agent mentioned above, and the gate width, and the amount of sprayed antifreeze is subtracted from the input amount displayed on the display and displayed. This is to check the amount of antifreeze remaining.

Of course, the amount of antifreeze discharged from the hopper can also be displayed on the display at regular intervals.

Further, by setting the initial value displayed on the display to O, the cumulative discharge amount can be displayed.

〔Example〕

An embodiment of the present invention will be explained with reference to the drawings. As shown in FIG.
A belt conveyor (3) is disposed below the hopper (2) for conveying the antifreeze agent (a) discharged from the lower end opening (not shown) of the hopper toward the rear. A gate (4) is attached to the back of the hopper (2) in the upper part of the hopper so that it can be raised and lowered.

The belt conveyor (3) is driven by a hydraulic motor (5) via a reducer (6), and a tachogenerator (8) for detecting the conveyance speed is attached to the drive sprocket wheel (7) of the belt conveyor (3). It is.

The gate (4) is raised and lowered by a hydraulic cylinder (9), and the opening height between its lower end and the belt conveyor (3) is
That is, the opening degree is detected by a potentiometer connected to the hydraulic cylinder (9).

In addition, in the figure, 01) is a chute for introducing the antifreeze agent (a) conveyed by the belt conveyor (3) into the dispersion disk θ rotated by the hydraulic motor surface; ) is located below the conveyance end.

Furthermore, the detection outputs of the tachogenerator (8) and potentiometer 00 are detected by the computer 0 as shown in FIG.
The computer 04) is further provided with a display 0ω as shown in FIG.

This display 0ω is used to display the amount of antifreeze (a) added into the hopper (2) and the remaining amount during spraying.This method will be specifically explained regarding weight display.

First, among the symbol buttons θω provided on the display 05), the A button is used to set the input amount. After pressing this A button, press the numerical button θη to set the input amount to the hopper (2). After that, the composition of the antifreeze agent (a),
That is, the flakes (calcium chloride), the size of the grains, the type of salt, etc. are input into the computer Q4) by pressing the B button.

Next, set the gate width and the specific gravity of the composition of the antifreeze agent (a) using the C button and numerical buttons, and press the weighing button 0.
8) is pressed to complete the automatic needle loading and the input weight is digitally displayed on the display section 09).

After setting like this, operate the spray rate and adjust the hopper (
The antifreeze agent (a) in 2) is conveyed backwards by the belt conveyor (3) and sent through the gate (4) to the chute (1).
The opening of the gate (4) and the speed of the belt conveyor (3) are controlled by the potentiometer 00 and the tachogenerator (8), respectively. Detection is performed, and the output is inputted into a computer to determine the above-mentioned gage I/width and anti-freezing agent (
The weight of the antifreeze agent (a) passing between the belt conveyors (3) is calculated based on the specific gravity of a).

This calculation can be obtained using the following equation.

Qkg/s-Hm X I, +n X T g/cd
X Vo+/s An appropriate correction constant can also be added as necessary.

Furthermore, in the above equation, if γ-1 is used, the capacity can be expressed.

This calculation is performed, for example, every 0.5 seconds, the weight is subtracted from the weight put into the hopper (2), and the numerical value is sequentially and continuously digitally displayed on the display section installed in the driver's seat. It is something that makes you

In addition, the display 0ω is equipped with a changeover switch LJ for detecting the remaining amount and for detecting the amount of spraying, and when detecting the amount of spraying, switch this switch 4 to detect and display the amount. Bye. In this case, as mentioned above, it is of course possible to display the weight or the capacity.

〔Effect of the invention〕

As described above, according to the method for detecting the remaining amount of antifreeze to be sprayed according to the present invention, after setting the amount of antifreeze to be put in the hopper installed at the spray rate, the amount of antifreeze to be put in the hopper is set to the spray rate, and then the amount of antifreeze from the hopper is set during the operation of the spray rate. The amount of spraying is calculated from the speed of the conveyor that carries out the antifreeze, the opening degree of the gate installed on the conveyance end of the conveyor, the width of the gate, and the specific gravity of the antifreeze, and the amount of spraying and the inside of the hopper are calculated. The system is characterized by calculating and displaying the remaining amount of antifreeze in the hopper from the amount of antifreeze added to the hopper. Regardless of the situation, the remaining amount can be accurately detected every short period of time, and the remaining amount can be easily checked by the operator by displaying it digitally, which helps prevent ice on the road surface. The spraying work can be performed reliably and smoothly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a side view of a tube showing the amount of spraying, FIG. 2 is a detection block diagram, and FIG. 3 is a front view of an indicator. (1)...Scattered amount vehicle body, (2)...Hopper, (3
)...belt conveyor, (4)...gate, (8)...
...Tachogenerator, 00)...Potentiometer, θ...Indicator. Seven beveled O shape? Gahe

Claims (1)

[Claims] (1) After setting the amount of antifreeze to be put in the hopper installed in the spray amount, the speed of the conveyor that carries out the antifreeze from the hopper during the operation of the spray amount and the top speed of the conveyor at the conveyance end of the conveyor. The amount of antifreeze in the hopper is calculated from the opening degree of the gate installed in the hopper, the width of the gate, and the specific gravity of the antifreeze agent. A method for detecting the remaining amount of antifreeze sprayed, characterized by calculating and displaying the remaining amount of antifreeze.