JPH10102541A - Cooling/heating control method and device for work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To invariably give a comfortable cooling/heating feeling to a driver regardless of the work state and work duration. SOLUTION: An arithmetic device 30 feeds the signal from a forward/reverse operation lever 52 to a detection part, and a counting part judges whether the signal is fed four times or more in one minute or not. When this judgment is satisfied, the arithmetic device 30 judges that the work is a heavy work, and an output part outputs the drive voltage signal to a relay 31. The relay 31 is excited, a wire 57 conducts, and the electrical signal indicating the zero resistance θ is fed to an air conditioner controller 11 regardless of the setting of a variable resistor 12. The temperature setting of a cooler is controlled to the lowest temperature by the air conditioner controller 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an agricultural machine
The present invention relates to a working machine such as a construction machine, and more particularly, to a method and an apparatus for controlling the cooling and heating of a working machine, which controls the cooling and heating in a cab of the working machine.

[0002]

2. Description of the Related Art In general, in the temperature adjustment operation of a cooling and heating apparatus, the following adjustments are often made. Temperature control switch (The operating part of the thermostat device may be a hot water flow control valve.) Air flow control switch Cooling / hot air outlet opening / direction Also, if the operator sets only a certain room temperature in advance, cooling / heating So-called automatic air conditioners, in which the device automatically adjusts to that temperature, have also become widespread. In particular, in the field of automotive cooling and heating control devices, for example, as described in JP-A-5-85145, the position, orientation, current date and time of a vehicle are detected,
In some cases, the amount of solar radiation detected by the solar radiation sensor is corrected based on these, and the air-conditioning environment is controlled based on this correction value, thereby performing appropriate air-conditioning control regardless of the sun elevation angle. On the other hand, as a special case of automotive air conditioner,
As a measure to prevent drowsiness when driving on a highway, a method of changing the cooling and heating conditions when a certain running state continues has been proposed.

[0003]

However, the above prior art has the following problems. That is, in each of the above techniques, control is performed on the assumption that the state set by the driver is a state requested by the driver. However, in general, the degree of air conditioning that the human body feels comfortable (hereinafter referred to as comfortable air conditioning feeling as appropriate)
Is different even in the same person depending on the state at that time, for example, a state of resting and a state of exercising. In addition, even if you say exercise, the comfortable air conditioning feeling differs depending on the strength and continuous time, etc.Moreover, even after you stop exercising, the comfortable air conditioning feeling different. Also, even at the same temperature, the bodily sensation varies depending on the degree of wind (so-called bodily sensible temperature),
Comfortable air conditioning feels different. These things are known sensuously and empirically.

[0004] In recent years, the driving operation of a working machine has been remarkably improved in terms of habitability and operability in recent years. However, the driving operation still often belongs to manual labor, and the driver exercises. May be equal to As an example of such a case, a loading operation (so-called V-shaped loading) of the earth and sand into a dump truck by a wheel loader will be described with reference to FIGS. FIG. 20 is a perspective view conceptually showing a V-type loading situation, and FIG. 21 is a layout view of a driver's seat in the wheel loader 1. In FIG. 20, the wheel loader 1
Moves forward from the stop position toward the earth and sand pit 3, puts the earth and sand into the bucket, and then moves backward to some extent, then advances toward the dump truck 2 and loads. In other words, in one loading operation (hereinafter referred to as one cycle as appropriate), two forward movements
Two reverse runs will be performed. This is repeated several times to load the dump truck 2 with an appropriate amount.

At this time, the operation of the wheel loader 1 is performed by an operation lever 52 for switching between forward and backward movements, as shown in FIG.
A work implement, ie, a tilt / dump of the bucket 1A and a work implement lever 56 for operating the lifting / lowering of a lift arm (not shown) provided at the tip of the bucket 1A; an accelerator pedal 53 for operating the rotation of the engine, that is, the vehicle speed;
A brake pedal 54 for limiting the vehicle speed, an inching pedal 5 operated when traveling at a very low speed toward the dump truck 2
5, and the steering wheel 51 is used. However, since the driving operation is performed using both hands and feet while receiving vibration, the physical burden on the driver is not small.

At this time, the dump truck 2 for loading
When the number is relatively small, work is often performed at the so-called "economic speed" of the engine speed with the best fuel efficiency, and the duration of the loading work is not long. On the other hand, when the number of the dump trucks 2 to be loaded is large, priority is given to reducing the waiting time of the dump truck driver.
Operate so that the maximum work load can be exhibited. The duration of the loading operation is often long. Thus, even if the temperature, wind speed, wind direction, and the like set by the driver at the start of the work are comfortable at the start of the work, changes in the work state (work amount / work speed) and the length of the work continuation time may cause a problem. After that, the driver will feel hot. Therefore, in this case, a re-adjustment is necessary, and even after the re-adjustment, a comfortable cooling and heating feeling cannot be obtained unless the temperature, the wind speed, the wind direction, and the like are frequently adjusted according to the work condition.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus for controlling the cooling and heating of a work machine, which can always provide a comfortable cooling and heating feeling to the driver regardless of the working state and the duration of the work. .

[0008]

According to the present invention, in order to attain the above object, according to the present invention, a cooling and heating condition of a cooling and heating device for cooling and heating a cab provided in a working machine is set and inputted. In a work machine cooling / heating control method for adjusting the operation of the cooling / heating device so as to satisfy a cooling / heating condition, an operation state of the work machine reflecting an amount of movement of an operator is detected, and the cooling / heating condition is corrected according to the operation state. A cooling and heating control method for a work machine is provided. That is, the operator before operating the work machine, the cooling and heating conditions of the cooling and heating device in the cab, for example,
If you set and input the air volume, cooling / heating setting temperature, the position of the hot / cold air outlet, the hot / cold air blowing direction, etc. by yourself, the operation of the air conditioner will be adjusted to achieve the input cooling / heating condition, and the operation of the work machine will be adjusted. Be started. At this time, the operation state of the work machine reflecting the momentum of the operator, for example, the number of operations per unit time of the forward / reverse operation lever,
Number of times the work machine lever is operated per unit time, the position of the accelerator pedal depressed and the percentage of the depressed time per unit time, the number of times the brake pedal is depressed per unit time, the number of times the inching pedal is depressed per unit time, the auto idle switch Per unit time, the ratio of the signal representing the non-operational state to the unit per unit time, the change in the steering angle of the steering wheel, the number of outputs of the holding release signal to the operating lever detent device per unit time, and the unit per unit time at the vibration level of the work machine , The number of changes in the acceleration direction, the fuel consumption of the work machine per unit time, and the like are detected. Then, in accordance with the detected operation state, the setting and input of the cooling / heating condition is corrected. That is, for example, after determining whether or not the operation state has reached a reference value of whether or not to make a correction, if the operation state has reached the reference value, a predetermined correction relating to cooling and heating conditions is performed. Thus, for example, during heavy work in which the work content of the work machine is a work that involves a hard physical burden on the operator, the operation of the cooling and heating device is corrected so that the corrected cooling and heating condition is satisfied. That is, for example, in the case of cooling, an increase in the amount of cool air, a decrease in the set temperature, an increase in the amount of air at the cool air outlet close to the operator's face, the direction of the cool air blowing toward the operator's face, standardizing the economy mode, and introducing outside air In the case of heating, the amount of hot air is reduced, the set temperature is reduced, the amount of air at the hot air outlet close to the operator's face is reduced, and the direction of hot air is removed from the operator's face. Then, the flow rate of the hot water as a heat source is reduced, in other words, the operation is modified so that the temperature felt by the operator decreases.

Therefore, even when the operator feels hot with the initial setting due to the physical burden of heavy work, the heat can be automatically eliminated, so that the operator is not affected by the work state or the duration of the work. Therefore, a comfortable cooling and heating feeling can always be given to the operator.

Preferably, in the cooling and heating control method for a work machine, the cooling and heating conditions set and inputted include a flow rate of a cooling and heating device of the work machine, a cooling and heating set temperature, a position of a cooling and heating air outlet, and a cooling and heating air blowing direction. A method for controlling the cooling and heating of a work machine is provided, wherein at least one of the methods is used.

Preferably, in the cooling and heating control method for a work machine, the correction of the cooling and heating condition is performed after determining whether or not the detected operating state has reached a reference value for performing the correction. A cooling / heating control method for a working machine, wherein a predetermined correction relating to the cooling / heating condition is performed when it is determined that the reference value has been reached.

Preferably, in the method for controlling the cooling and heating of the work machine, when the correction of the cooling and heating condition is started,
A method for controlling the cooling and heating of a work machine is provided, wherein the correction is started with a predetermined delay time. That is,
Just because the work content of the work machine becomes heavy work does not mean that the operator immediately feels hot, but only when heavy work continues for a predetermined duration. Therefore, by performing the correction start with a predetermined delay time, more comfortable cooling and heating control corresponding to this can be performed. Also, for example, if the heavy work state is completed within a relatively short time,
Since the heavy work is completed before the operator feels hot, no correction is originally necessary. Therefore, for example, if the operation state becomes a value that does not require correction before the delay time elapses, the correction is not performed. It can be carried out.

[0013] More preferably, in the cooling and heating control method for a work machine, when the operation state becomes a value that does not require correction before the predetermined delay time elapses,
A cooling and heating control method for a working machine is provided, wherein the correction of the cooling and heating condition is not performed.

Preferably, in the method for controlling the cooling and heating of the work machine, when the correction of the cooling and heating condition is completed,
A method for controlling the cooling and heating of a work machine is provided, wherein the correction is ended after a predetermined delay time. That is,
Completion of heavy work or light work does not immediately eliminate the heat felt by the operator, but does not allow the heat to be felt only after a lapse of a predetermined time after heavy work. Accordingly, by performing the correction end with a predetermined delay time, more comfortable cooling and heating control corresponding to this can be performed. Further, for example, when the non-heavy work ends in a relatively short time and the heavy work is started again, the heavy work is resumed before the heat of the operator disappears, so the correction does not need to be terminated originally. . Therefore, for example, if the operation state becomes a value that needs correction before the delay time elapses, the correction is continued without terminating, so that more comfortable air conditioning control corresponding to such a case is achieved. It can be performed.

[0015] More preferably, in the method for controlling the cooling and heating of the work machine, when the operation state becomes a value requiring correction before the predetermined delay time elapses,
A method for controlling the cooling and heating of a working machine is provided, wherein the correction of the cooling and heating device is continued without ending.

Preferably, in the above-mentioned method for controlling the cooling and heating of a work machine, there is provided a method for controlling the cooling and heating of a work machine, wherein the delay time is changed according to the operation state. That is, for example, the cool-down time required after the completion of the heavy work for 10 consecutive minutes (time until the operator regains rest) is different from the cool-down time required after the heavy work for 30 consecutive minutes. Thus, for example, by changing the end delay time according to the duration of the operation state corresponding to heavy work, better control corresponding to such a phenomenon can be performed. Further, for example, when the heavy work is restarted with a break of 10 minutes after the end of the heavy work, and when the heavy work is restarted with a break of 30 minutes after the end of the same heavy work, the time when the operator starts to feel hot again is different.
Therefore, for example, by changing the start delay time in accordance with the duration of the operation state that is not heavy work, better control corresponding to such a phenomenon can be performed.

Preferably, in the method for controlling the cooling and heating of a work machine, a plurality of types of correction amounts are set at the time of the correction, and one of the plurality of types of correction amounts is used in accordance with the operation state. There is provided a method for controlling cooling and heating of a work machine, wherein the correction is performed. For example, two types of correction amount are set at the time of correction, and they are used properly for hard work and other work in heavy work.
If any one of them is selected, more precise control can be performed.

Preferably, in the method for controlling the cooling and heating of the work machine, the operation state may be set to a value in front of the work machine.
A cooling / heating control method for a working machine, characterized in that the number of operations per unit time of a reverse / reverse operation lever for switching the reverse is detected, and the cooling / heating condition is corrected according to the number of operations.

Preferably, in the method for controlling the cooling and heating of a work machine, the number of operations per unit time of a work machine lever for operating a work machine provided in the work machine is detected as the operation state. The method for controlling the cooling and heating of the working machine is characterized in that the cooling and heating conditions are corrected in accordance with the following.

Preferably, in the method for controlling the cooling and heating of the work machine, the operation state includes detecting a depression position of an accelerator pedal for traveling the work machine and a ratio of a depression time per unit time, and determining the depression state. The air conditioning control method for a work machine is provided, wherein the air conditioning condition is corrected according to

Preferably, in the method for controlling the cooling and heating of the work machine, the number of steps per unit time of a brake pedal for stopping the traveling of the work machine is detected as the operation state, and the cooling and heating is performed according to the number of steps. A method for controlling the cooling and heating of a work machine is provided, wherein the condition is corrected.

Preferably, in the method for controlling the cooling and heating of the working machine, the operating state is determined by detecting the number of times of depressing an inching pedal for moving the working machine at a very low speed per unit time. And a method for controlling the cooling and heating of the work machine, wherein the method comprises:

Preferably, in the method for controlling the cooling and heating of a working machine, the operating state indicates a non-operating state in which the working machine is guided to an auto-idle switch that puts an engine into an idling state in a non-operating state for a predetermined time. A cooling / heating control method for a work machine, wherein a ratio of a signal to a unit time is detected, and the cooling / heating condition is corrected according to the ratio.

Preferably, in the method for controlling the cooling and heating of a work machine, a change in a steering angle per unit time of a steering wheel for performing a steering operation of the work machine is detected as the operation state.
A working machine cooling / heating control method is provided, wherein a steering operation of the working machine is performed as the operation state for correcting the cooling / heating condition.

Preferably, in the method for controlling the cooling and heating of a work machine, the work machine is a wheel loader having a bucket and a lift arm as a work machine, and the operation state is such that the bucket is operated in accordance with the operation of the lift arm. Detecting the number of outputs per unit time of the holding release signal to the operating lever detent device that holds the operating lever at the neutral position in order to keep the direction of the operation lever constant, and correcting the cooling / heating condition according to the number of outputs. A method for controlling the cooling and heating of a working machine is provided.

Preferably, in the working machine cooling / heating control method, the number of changes in the acceleration direction per unit time in the vibration level of the working machine is detected as the operating state, and the cooling / heating condition is set according to the number of changes. A method is provided for controlling the cooling and heating of a work machine, the method comprising performing a correction.

Preferably, in the work machine cooling / heating control method, a fuel consumption per unit time of the work machine is detected as the operation state, and the cooling / heating condition is corrected according to the fuel consumption. A cooling and heating control method for a work machine is provided.

According to the present invention, in order to achieve the above object, according to the present invention, an input means capable of setting and inputting a cooling / heating condition of a cooling / heating device for cooling / heating a cab provided in a working machine,
An air conditioner control device that adjusts the operation of the air conditioner so that the air conditioner conditions set and input by the input device are satisfied. Operating state detecting means, and correcting means for correcting the cooling and heating condition set and input by the input means according to the operating state detected by the operating state detecting means, and the adjusting means comprises: A cooling and heating control device for a working machine is provided, wherein the operation of the cooling and heating device is corrected so as to satisfy the cooling and heating condition corrected by the correction means. That is, when the operator sets and inputs the cooling and heating conditions of the cooling and heating device in the cab with the input means by himself before operating the work machine, the operation of the cooling and heating device is adjusted by the adjustment means so that the input cooling and heating condition is satisfied. It is adjusted and the operation of the work machine is started. At this time, the operation state detecting means detects the operation state of the work machine reflecting the amount of movement of the operator. Then, in accordance with the detected operation state, the correction means corrects the cooling / heating condition set and input by the input means. That is, for example, the level determination means provided in the correction means determines whether or not the operation state has reached a quantitative reference value of whether or not to perform correction, and the correction value output means has a predetermined correction value relating to cooling and heating conditions. Is output to the adjusting means. Thus, for example, during heavy work in which the work content of the work machine is a work that involves a hard physical burden on the operator, the adjusting unit operates the cooling / heating device so that the cooling / heating condition output from the correction unit is satisfied. To correct. Therefore, even when the operator feels hot with the initial setting due to the physical burden of heavy work, the heat can be automatically eliminated, so that regardless of the work state and the duration of the work, it is always possible A comfortable cooling and heating feeling can be given to the operator.

[0029] More preferably, in the cooling and heating control apparatus for a work machine, the correction means determines whether or not the operation state detected by the operation state detection means has reached a quantitative reference value of whether or not to perform correction. And a correction value output unit that outputs a predetermined correction value related to the cooling and heating condition to the adjustment unit when the level determination unit determines that the quantitative reference value has been reached. A cooling and heating control device for a work machine is provided.

Preferably, in the cooling and heating control device for a work machine, a plurality of types of correction amounts are set by the correction means, and one of the plurality of types of correction amounts is selected and corrected according to the operation state. Is performed, a cooling and heating control device for a working machine is provided. For example, two types of correction amounts by the correction means are set, and in the case of heavy work, particularly for hard work and other work, these are selectively used and one of the corresponding works is selected, so that more detailed control can be performed. Can be optimized.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. In the first to seventh embodiments described below, a wheel loader that loads a dump truck with a V-type loading of earth and sand is taken as an example of a working machine, and a control method of controlling a cooling device or a heating device of the wheel loader is described. It is an embodiment. 1 to 3 show a first embodiment of the present invention.
This will be described below. This embodiment is an embodiment when applied to a cooling device in a cab of a wheel loader. FIG. 1 is a circuit conceptual diagram showing the configuration of an apparatus for implementing a cooling control method according to the present embodiment and a cooling apparatus to be controlled by the apparatus.
Shown in In FIG. 1, a cooling device to be controlled includes an indoor unit 22, an evaporator 22a as a heat exchanger disposed in the indoor unit 22, and a compressor that operates based on a control signal from an air conditioner controller 11 (described later). 21 and a condenser 20 placed outdoors
And the motor 1 disposed in the indoor unit 22 and
And a blower 22b driven by the evaporator 22 to supply cold air generated by the evaporator 22a to the room as cold air, and the refrigerant gas pressurized by the compressor 21 and turned into high temperature and high pressure releases heat in the condenser 20 to condense After being stored as a liquid in the liquid tank 59, an appropriate amount is supplied to the evaporator 22a via the expansion valve 60, and absorbs heat in the cab and evaporates in the evaporator 22a to generate cool air, which is then supplied to the blower 22b. The cooling is performed by supplying the air to the cab. In addition, in order to avoid complexity of illustration and to clarify the configuration, the blower 22b and the motor 15 for driving the blower are separately illustrated for convenience.

Here, the device for performing the cooling control method of the present embodiment for controlling the operation of the cooling device having the above configuration is arranged in the indoor unit 22 and comprises a thermistor which detects the temperature and outputs it as an electric signal. Temperature sensor 14
And an air conditioner controller 11 to which an electric signal from the temperature sensor 14 is inputted, and a cooling temperature adjustment provided on an operation panel, which is connected to a movable portion of the variable resistor 12 and provided for an operator to set and input cooling conditions. Temperature adjustment knob (not shown), an air volume adjustment switch 13 for the driver to set and input a cooling air volume, and an air volume adjustment switch 13
The air conditioner controller 11 and the power supply 10 serving as a voltage source for the motor 15 of the blower 22b are connected to each other so that the resistance can be switched in conjunction with the switching. The position set by the driver with the temperature adjustment knob is converted into an electric signal in the form of a resistance value by the variable resistor 12 and input to the air conditioner controller 11, and the air conditioner controller 11 reaches the cooling temperature set by the driver. Thus, the compressor 21 is switched on and off in response to the signal from the temperature sensor 14. At this time, there is a correspondence relationship that the setting temperature of the temperature adjustment knob is the strongest cold position → the resistance value of the variable resistor 12 is 0 → the air conditioner controller 11 is controlled to the lowest temperature. Meanwhile,
The air volume switching resistance 16 is switched according to the position set by the driver with the air volume adjustment switch 13, whereby the resistance value in the electric circuit from the power supply 10 to the motor 15 of the blower 22b is stepwise changed. The air blower 22b changes so that the air volume changes
Is driven.

In the apparatus for performing the cooling control method of the present embodiment, the configuration up to this point is almost the same as that of the conventional cooling control apparatus. And the part newly added for the purpose of enhancing the cooling according to the work state, which is the most significant feature of the cooling control method of the present embodiment, has the following configuration.
That is, the forward position (shown by F in the figure) of the electric forward and backward operation lever 52 provided in the wheel loader.
Neutral position (indicated by N in the figure) and reverse position (indicated by R in the figure)
Of the forward and backward operating levers 5
2 is connected to the arithmetic unit 30 that detects this by inputting a switching signal when the vehicle is in the reverse position, and to the wiring 57 branched in parallel from the wiring connecting the air conditioner controller 11 and the variable resistor 12. And a relay 31 which is energized by the drive voltage output from the arithmetic unit 30 and opens and closes.

FIG. 2 is a functional block diagram showing the control contents of the arithmetic unit 30, and FIG. As shown in FIG. 2, the arithmetic unit 30 includes a forward / reverse operating lever 52.
A detection unit 30a to which a switching signal when the vehicle is in the reverse position is input, a clock unit 30b having a clock function,
The counting unit 30c receives the signal from the detecting unit 30a and the signal from the clock unit 30b, and counts the number of signals input to the detecting unit 30a in one minute. Output unit 30d that outputs drive voltage signal Sa for relay 31 when there is a count
And With these configurations, the arithmetic unit 30
Executes the control contents shown in the flow of FIG. 3 as a whole.

That is, in FIG.
In step S1, a signal from the forward / reverse operation lever 52 (a signal indicating that the vehicle has been switched to reverse) is input to the detection unit 30a, and in step S2, the signal is input at least four times a minute by the counting unit 30c. It is determined whether it has been performed. When the determination in step S2 is not satisfied, that is, when the number of times of input of the signal from the forward / reverse operation lever 52 per minute is three or less, it is determined that the operator is not performing a heavy physical burden on the operator. Then, the process returns to step S1.

On the other hand, when the determination in step S2 is satisfied, that is, when the signal from the forward / reverse operation lever 52 is input four times or more per minute, it is determined that the work is heavy, and the process proceeds to step S3. .

Here, the grounds for determining whether or not this is heavy work will be described below. In general, in the V-type loading operation using the combination of the dump truck 2 and the wheel loader 1 as described above with reference to FIG. 21, the number of times the dump truck 2 is loaded in an appropriate amount is 3 to 5 cycles. Further, in the wheel loader 1 having a mechanical mass of 7 to 12 tons, the time required for one cycle time in the case of heavy work performed at an increased speed is generally 20 to 40 seconds. Therefore, if this is assumed to be, for example, 30 seconds, the number of forward (or reverse) operations per minute is 60 (seconds) / 30 (seconds) ×
2 (number of forward or reverse operations per cycle) = 4
(Times). Therefore, if there are four or more forward operations (or reverse operations) in one minute, the operation can be regarded as heavy operation. When this criterion is expressed by an equation, Na: the number of forward (or reverse) operations per minute of the wheel loader 1, Nb: the number of forward operations (or reverse operations) per minute when it can be considered as heavy work (= 4 times / minute), Na ≧ Nb (1)

As described above, when it is determined in step S2 that the work is heavy, and the process proceeds to step S3, the output unit 30d outputs the drive voltage signal Sa to the relay 31. FIG. 4 shows the relationship between the amount of work (= the amount of soil movement per hour, the number of loaded dump trucks, etc.) and the output of the drive voltage signal Sa. As shown in FIG. 4, the drive voltage signal Sa is output to the relay 31 only during heavy work. As a result, the relay 31 is excited, the wiring 57 is conducted, and an electric signal indicating the resistance 0 is input into the air conditioner controller 11 regardless of the setting of the variable resistor 12 based on the temperature adjustment knob. Therefore, the temperature setting of the cooling device is controlled by the air conditioner controller 11 to be the lowest temperature.

In the above configuration, the temperature adjustment knob and the variable resistor 12 (not shown) and the air volume adjustment switch 13 constitute an input means capable of setting and inputting the cooling and heating conditions of the cooling and heating device for cooling and heating the cab. Switching resistor 16
In addition, the air conditioner controller 11 constitutes adjusting means for adjusting the operation of the cooling and heating device so as to satisfy the cooling and heating conditions set and input by the input means. Procedure S in the flow
1 constitutes operation state detection means for detecting the operation state of the work machine reflecting the amount of movement of the operator. The procedures S2 and S3 shown in the flow of FIG. 3 and the relay 31 and the wiring 57 in the control contents of the arithmetic unit 30 are controlled by the operation state detecting means to detect the temperature as the input means. A correction means for correcting the cooling / heating condition set and input by the adjustment knob is constituted, and in step S2 in FIG. 3, the operation state detected by the operation state detection means reaches a quantitative reference value indicating whether or not to perform correction. When the level determining means determines that the procedure has reached the quantitative reference value in step S3, the relay 31, and the wiring 57 in FIG. A correction value output unit that outputs the correction value to the adjustment unit is configured.

As described above, according to the present embodiment, even when the driver feels hot under the initial setting due to the physical load of heavy work in the wheel loader 1, the arithmetic unit 30 can be used. By outputting the drive voltage signal Sa, the relay 31 is excited and the air conditioner controller 11
Can control the cooling device to the lowest temperature and automatically eliminate the heat. Therefore, a comfortable cooling feeling can always be given to the driver regardless of the work state and the duration of the work. Therefore, since the driver can be released from the complicated temperature adjustment operation, the driver can concentrate on the operation of the wheel loader main body, and the efficiency and the safety can be improved.

In the first embodiment, the driver adjusts the cooling temperature by operating the temperature adjustment knob 12a on the operation panel.
However, the present invention is not limited to this. For example, a button may be used. In this case, a similar effect is obtained. Further, in the first embodiment, the forward / reverse operation lever 52 is of an electric type, and the arithmetic unit 30 directly obtains an electric signal for switching between forward and backward as a detection signal, but is not limited thereto. That is, even if the forward / reverse operation lever 52 is a conventional mechanical operation, the operation of the operation mechanism component may be detected by a proximity switch, a limit switch, or the like, and the detection signal may be input to the arithmetic unit 30. In this case, a similar effect is obtained. Further, in the first embodiment, in the arithmetic device 30,
The drive voltage signal Sa is output when the reversing position switching of the forward / reverse operation lever 52 is detected four or more times per minute. The frequency is a reference for judging heavy work. It is not necessarily limited to this.
In short, it is sufficient if the reference is such that it is possible to determine that the task is a task that places a hard physical burden on the driver. In addition, the first
In the embodiment, the number of switching signals per unit time when the forward / reverse operation lever 52 is at the reverse position is used as the operation state of the wheel loader 1 reflecting the amount of movement of the operator, but is not limited thereto. Alternatively, the number of times of the switching signal per unit time at the forward position may be used. In this case, a similar effect is obtained.

A second embodiment of the present invention will be described with reference to FIGS. This embodiment is an embodiment in which a fixed start delay time is provided when the output of the drive voltage signal Sa from the arithmetic unit 30 is started. Members and functions equivalent to those in the first embodiment are denoted by the same reference numerals.

The main part of the cooling control method of the present embodiment,
FIG. 5 is a flowchart showing the control contents of the arithmetic unit 30. The difference between the flowchart in FIG. 5 and the flowchart in FIG. 3 by the arithmetic unit 30 of the first embodiment is that
Step S4 is provided between step S2 and step S3. In other words, if the reverse operation is performed four or more times per minute and the determination in step S2 is satisfied, then in step S4, it is counted whether or not such an operation state of four or more times per minute has continued for 10 minutes or more. The unit 30c makes a further determination.

The significance of this determination will be described below. As described in the first embodiment, during heavy work, the time required for one cycle is about 20 to 40 seconds, for example, 30 seconds. At this time, the appropriate number of times of loading the dump truck 2 is 3 to 5 cycles, for example, 4 Because it is a cycle, one of dump trucks 2
Loading time per unit is 30 (seconds) x 4 (cycles) =
120 (seconds). Even if heavy work is started, immediately after the start, when the loading work of about one dump truck has been completed, the momentum of the driver is not so small yet and the body is not warm. That is, when such heavy work lasts for about 5 minutes and the loading work of two or three dump trucks is finished (although there are some individual differences, of course), the warmth of the body is finally felt, and the heavy work is generally performed. It is common for the driver to feel the heat accompanied by sweating when he finishes the loading operation of 5 to 6 dump trucks for 10 minutes. Conventionally, from this time, the driver adjusts the cooling device ( It is empirically known that the adjustment to the low temperature side is started. Therefore, heavy work in which four or more forward operations (or reverse operations) are performed in one minute,
Continue cooling for the first time for a minute (adjust to lower temperature)
Need arise. When this criterion is expressed by an equation, Ta: a duration of a state (heavy operation state) satisfying the equation (1), Tb: a continuous operation time (= 10 minutes) at which the driver starts to feel heat, Ta ≧ Tb ... (2) That is, even if the work becomes heavy work, it becomes necessary to readjust the cooling to the low temperature side only when the work continuation time satisfies the formula (2), and the formula (2) must be satisfied. There is no need to readjust.

Therefore, in step S4, it is determined whether or not the operation state of four times or more for one minute has been continued for ten minutes or more, and only when the determination is satisfied, the cooling is adjusted to the lower temperature side. Is determined to have occurred, the process proceeds to step S3, and the output unit 30d outputs the drive voltage signal Sa to the relay 31. When the judgment in the step S4 is not satisfied (for example, a state where the heavy work state has been continued for 9 minutes and then the medium work has been performed)
Returns to step S1 and repeats steps S1 to S4. FIG. 6 shows the relationship between the amount of work performed by such control and the output of the drive voltage signal Sa. As shown in FIG. 6, if the duration Ta of the heavy work state is shorter than Tb (= 10 minutes) (that is, in the case of the short heavy work), the drive voltage signal Sa is not output. When Ta becomes Tb or more (that is, in the case of long-time heavy work), the drive voltage signal Sa is output with a start delay time of Tb = 10 minutes. Other configurations and control procedures that are not specified are substantially the same as those of the first embodiment. In the above configuration,
Procedures S2, S4, and S3 shown in the flow of FIG.
The relay 31 and the wiring 57 constitute a correction means for correcting the cooling and heating conditions set and input by the temperature adjustment knob as the input means in accordance with the operation state detected by the operation state detection means. Constitutes level determination means for determining whether the operation state detected by the operation state detection means has reached a quantitative reference value of whether to perform correction,
When the level determining means determines that the procedure S3, the relay 31, and the wiring 57 in FIG. 5 have reached the quantitative reference value,
It constitutes a correction value output means for outputting a predetermined correction value relating to cooling and heating conditions to the adjustment means.

According to this embodiment, in addition to the effects of the first embodiment, the cooling is adjusted to the low temperature side with the start delay time Tb that matches the driver's bodily sensation. Cooling control can be performed.

In the second embodiment, the start delay time Tb is set to 10 minutes. However, this value is one example, and the present invention is not limited to this. It suffices to determine them appropriately according to the individual differences of the drivers, the work mode, the vehicle type of the wheel loader, and the like. In the second embodiment, the start delay time Tb
(= 10 minutes) is stored in the arithmetic device 30 in advance. However, the present invention is not limited to this. For example, it may be configured to be input by a separate input unit, for example, before work. In this case, a similar effect is obtained.

A third embodiment of the present invention will be described with reference to FIGS. This embodiment is an embodiment in which, in addition to the configuration of the second embodiment, a fixed end delay time is also provided when the output of the drive voltage signal Sa from the arithmetic unit 30 is ended. Members and functions equivalent to those of the first and second embodiments are denoted by the same reference numerals.

The main part of the cooling control method of the present embodiment,
FIG. 7 is a flowchart showing the control contents of the arithmetic unit 30. The difference between the flowchart of FIG. 7 and the flowchart of FIG.
Steps S5 to S8 are provided after step S3.
That is, when the drive voltage signal Sa is output in step S3,
In step S5, the signal from the forward / reverse operation lever 52 is input to the detection unit 30a again, and in step S6, the counting unit 30 determines again whether or not the reverse operation has been performed four or more times per minute.
Perform in c. When this determination is satisfied, it is determined that the heavy work state is still continuing, and the process returns to step S3, where steps S3 to S3 are performed.
S6 is repeated. If the determination in step S6 is not satisfied, it is determined that the heavy work state has already been completed, and the process proceeds to step S7.
The counting unit 3 based on the timing information from the clock unit 30b.
0c determines whether 10 minutes have passed since the end of the heavy work state.

The significance of this determination will be described below. As described in the second embodiment, the driver's body does not immediately feel the heat even if heavy work is started, but does not feel the heat until about 10 minutes after the start. start. A similar time lag also occurs at the end of heavy work. That is, the driver's body does not immediately feel the heat even after the heavy work is finished, but does not feel the heat until about 10 minutes after the end. For example, when the V-type loading operation to the dump truck 2 is performed in a heavy work state, the dump truck 2 to be loaded may happen to be interrupted. However, at this time, even though the heavy work state is over, the driver's body feels heat for a while after finishing the long loading work, so the cooling device must be strengthened for a while. If
The driver cannot get a feeling of comfort. Therefore, 4 per minute
It is considered that the necessity of cooling enhancement (adjustment to the low temperature side) becomes unnecessary only after a predetermined time Tc (for example, 10 minutes) elapses after a heavy work with more than one forward operation (or reverse operation) is completed. Can be.

Therefore, in step S7, after the heavy work is completed, Tc =
It is determined whether or not 10 minutes have elapsed. Only when the determination is satisfied, it is determined that it is not necessary to re-adjust the cooling to the low temperature side, and the process proceeds to step S8 to output the output unit 30d.
The output of the drive voltage signal Sa from the relay to the relay 31 is stopped. If the determination in step S7 is not satisfied (for example, after 9 minutes from the end of the heavy work state, the heavy work is started again), the procedure returns to step S3 and repeats steps S3 to S7.
FIG. 8 shows the relationship between the amount of work performed by such control and the output of the drive voltage signal Sa. As shown in FIG. 8, while the elapsed time after the end of the heavy work is shorter than Tc (= 10 minutes), the drive voltage signal Sa is continuously output.
The output of the drive voltage signal Sa is stopped after the end delay time of c = 10 minutes has elapsed. Other configurations and control procedures that are not specified are substantially the same as those of the second embodiment.

In the above configuration, the forward / reverse operation lever 52 and the procedures S1 and S2 shown in FIG.
5 constitutes an operation state detecting means for detecting the operation state of the work machine reflecting the amount of movement of the operator, and the procedure S shown in FIG.
2 up to S3 and procedures S6 up to S8, relay 3
1 and the wiring 57 constitute a correction means for correcting the cooling / heating condition set and input by the temperature adjustment knob as the input means in accordance with the operation state detected by the operation state detection means, and the steps S2 and S6 in FIG. Constitutes a level determining means for determining whether or not the operation state detected by the operation state detecting means has reached a quantitative reference value of whether or not to perform the correction, and the steps S3 and S8 of FIG. And the wiring 57 constitutes a correction value output means for outputting a predetermined correction value relating to the cooling / heating condition to the adjustment means when the level determination means determines that the quantitative reference value has been reached.

According to the present embodiment, in addition to the effect of the second embodiment, the adjustment of the cooling to the low temperature side is ended with the end delay time Tc matching the driver's bodily sensation, so that it is more comfortable and rational. Cooling control can be performed.

In the third embodiment, the end delay time Tc is set to 10 minutes, but this value is one example, and the present invention is not limited to this. It suffices to determine them appropriately according to the individual differences of the drivers, the work mode, the vehicle type of the wheel loader, and the like. In the third embodiment, the end delay time Tc
(= 10 minutes) is stored in the arithmetic device 30 in advance. However, the present invention is not limited to this. For example, it may be configured to be input by a separate input unit, for example, before work. In this case, a similar effect is obtained.

FIGS. 9 and 10 show a fourth embodiment of the present invention.
This will be described below. This embodiment is an embodiment in which the value of the end delay time Tc in the configuration of the third embodiment is variable. Members and functions equivalent to those of the first to third embodiments are denoted by the same reference numerals.

The main part of the cooling control method of the present embodiment,
FIG. 9 is a flowchart showing the control contents of the arithmetic unit 30. The main difference between the flowchart of FIG. 9 and the flowchart of FIG. 7 performed by the arithmetic unit 30 of the third embodiment is that steps S9 and S1 are performed between steps S6 and S7.
0 is provided. That is, when it is determined that the determination in step S6 is not satisfied and the heavy work is completed, the process proceeds to step S9, and the counting unit 30c calculates the duration Td of the immediately preceding heavy work state. After that, the procedure goes to step S10, where the end delay time Tc corresponding to the duration Td is calculated.

The significance of such calculation is as follows. That is, for the driver, for example, the time required to restore rest after 10 minutes of heavy work (= cool down time) and the cool down time after 30 minutes of heavy work are usually different. Therefore, the duration Td
And the end delay time Tc is, for example, Td = 5
If the time is less than 1 minute, Tc = 1 minute, if Td = 5 minutes or more and less than 10 minutes, Tc = 2 minutes, and if Td = 10 minutes or more, Tc = 3 minutes.

After the Tc corresponding to Td is calculated in this manner, the process proceeds to step S7, where it is determined whether or not Tc has elapsed. If the determination is satisfied, the output of the drive voltage signal Sa is stopped in step S8. Is done. FIG. 10 shows the relationship between the amount of work by such control and the output of the drive voltage signal Sa. As shown in FIG. 10, the duration is Td ₁ <Td ₂
<Td ₃ corresponds to the drive voltage signal Sa.
End delay time Tc ₁ <Tc ₂ <Tc ₃
It has become. Other configurations and control procedures that are not specified are substantially the same as those of the third embodiment.

In the above configuration, the forward / reverse operation lever 52 and the procedures S1 and S2 shown in the flow chart of FIG.
5 constitutes operation state detection means for detecting the operation state of the work machine reflecting the amount of movement of the operator,
2 up to step S3 and step S6 up to step S8;
The relay 31 and the wiring 57 constitute a correction unit that corrects the cooling / heating condition set and input by the temperature adjustment knob, which is the input unit, in accordance with the operation state detected by the operation state detection unit. S6 constitutes level determination means for determining whether or not the operation state detected by the operation state detection means has reached a quantitative reference value of whether or not to perform correction;
Steps S3 and S8, relay 31, and wiring 57 in FIG.
Constitutes a correction value output means for outputting a predetermined correction value relating to cooling and heating conditions to the adjustment means when the level judgment means determines that the quantity has reached the quantitative reference value.

According to this embodiment, in addition to the effects of the third embodiment, the end delay time Tc is changed so as to match the cool-down time of the driver's body, so that finer cooling control can be performed. It can be carried out.

In the fourth embodiment, the end delay time Tc is determined by the arithmetic unit 30. However, the present invention is not limited to this, and the basic end delay time is separately input by, for example, a work before inputting. On the other hand, the arithmetic unit 3
The basic end delay time may be expanded or contracted so that 0 matches the cool down time. In this case, a similar effect is obtained.

FIG. 11 and FIG. 1 show a fifth embodiment of the present invention.
2 will be described. This embodiment is an embodiment in which the value of the start delay time Tb in the configuration of the fourth embodiment is further variable. Members and functions equivalent to those of the first to fourth embodiments are denoted by the same reference numerals.

The main part of the cooling control method of this embodiment is
FIG. 11 is a flowchart showing the control contents of the arithmetic unit 30.
Shown in The main difference between the flowchart in FIG. 11 and the flowchart in FIG. 9 by the arithmetic unit 30 of the fourth embodiment is that steps S11 to S15 are provided after step S8. That is, when the drive voltage signal Sa for exciting the relay is output in step S8, the process proceeds to step S11, where the detection unit 30a inputs the signal from the forward / reverse operation lever 52,
In step S12, the signal is 1
It is determined whether the input has been made four times or more per minute. If the determination is not satisfied, it is determined that heavy work has not been resumed, and the procedure returns to step S11, and steps S11 and S12 are repeated.
If the determination is satisfied, it is determined that the heavy work has been resumed, and the process proceeds to step S13, where the counting unit 30c calculates the duration Te of the immediately preceding non-heavy work state. Thereafter, the process proceeds to step S14, and a start delay time Tb corresponding to the continuation time Te is calculated.

The significance of such calculation is as follows. That is, for example, the driver begins to feel hot again after heavy work after 2 minutes of light work (or suspension of work), and starts heavy work after 10 minutes of light work (or suspension of work). This is because it is usually different from the time when it starts to feel hot again. Specifically, for example, maintenance of the site (leveling of irregularities, collection of spilled earth and the like) may be performed for a short period of time between loading operations. The operation is regarded as light work because the number of operations is four or less. Then, when shifting to the loading operation again, the driver does not need the start delay time Tb. Therefore, the correspondence between the duration Te and the start delay time Tb is, for example, Tb = 0 minutes and Te = 2 minutes when Te = less than 2 minutes.
For two minutes or more, Tb is set to one minute.

After the Tb corresponding to Te is calculated in this manner, the process proceeds to step S15, and it is determined whether or not Tb has elapsed. If the determination is satisfied, the process returns to step S3 to output the drive voltage signal Sa. Is resumed. If the determination is not satisfied, the process returns to step S8, and steps S8 to S15 are repeated again. FIG. 12 shows the relationship between the amount of work performed by such control and the output of the drive voltage signal Sa. As shown in FIG. 12, the start delay time for restarting the output of the drive voltage signal Sa is Tb ₁ (= 0) in response to the continuation time of the non-heavy work state being Te ₁ <Te _2. <Tb ₂ .
Other configurations and control procedures that are not specified are substantially the same as those of the fourth embodiment.

In the above configuration, the forward / reverse operation lever 52 and the steps S1, S5 and S11 shown in the flow of FIG. And FIG.
From step S2 to step S3, from step S6 to step S8,
In addition, the relay 31 and the wiring 57 constitute the correcting means for correcting the cooling and heating condition set and input by the temperature adjusting knob as the input means in accordance with the operation state detected by the operation state detecting means. Then, step S2 in FIG.
Steps S6 and S12 constitute level determination means for determining whether or not the operation state detected by the operation state detection means has reached a quantitative reference value of whether or not to perform correction.
3, S8, the relay 31, and the wiring 57 constitute a correction value output unit that outputs a predetermined correction value relating to the cooling / heating condition to the adjustment unit when the level determination unit determines that the quantitative reference value has been reached. .

According to this embodiment, in addition to the effect of the fourth embodiment, the start delay time Tb is changed so as to coincide with the time when the driver's body starts to feel hot again.
Finer cooling control can be performed.

In the fifth embodiment, both the start delay time Tb and the end delay time Tc are variable. However, the end delay time Tc is fixed as in the third embodiment, and only the start delay time Tb is set. Can be changed. In the fifth embodiment, the start delay time Tb is determined by the arithmetic unit 30. However, the present invention is not limited to this. For example, a basic start delay time is separately input by input means, for example, before work. On the other hand, the arithmetic unit 30 may be configured to expand and contract the basic start delay time. In this case, a similar effect is obtained.

FIGS. 13 to 16 show a sixth embodiment of the present invention.
This will be described below. In the present embodiment, in the configuration of the first embodiment, the cooling temperature can be adjusted in two stages according to the work situation. In other words, it is empirically known that even when the loading operation is a work that is not as heavy as the heavy work (medium work), the driver wants to change the cooling setting after a certain work time has elapsed, but this embodiment has This corresponds to such a case. Members and functions equivalent to those in the first to fifth embodiments are denoted by the same reference numerals. FIG. 1 is a circuit conceptual diagram showing the configuration of an apparatus for implementing a cooling control method according to the present embodiment and a cooling apparatus to be controlled by the apparatus.
3 is shown. 13 differs from the first embodiment in that a relay 232 is provided via a resistor 233 having a relatively small resistance value on a wire 258 branched in parallel from the wire 57 provided with the relay 31. That is, the driving voltage signals Sa and Sb are output from the arithmetic unit 230 to the relays 31 and 232 according to the degree of work.

FIG. 14 is a functional block diagram showing the control contents of the arithmetic unit 230, and FIG. 15 is a flowchart thereof. In FIG. 14, the arithmetic unit 230 is the arithmetic unit 30
Detection unit 30a, clock unit 30b, count unit 30c
A detecting unit 230a, a clock unit 230b, and a counting unit 230c having substantially the same functions as those described above, and relays 31, 23 according to the degree of work according to the procedure of a flowchart described later.
2 has an output section 230d for outputting drive signals Sa and Sb. With these configurations, the arithmetic unit 230
As a whole, the control contents are executed according to the flow of FIG.

In the flow of FIG. 15, steps S1 to S
8 has the same control content as the flow shown in FIG. 7 in the third embodiment, and thus the description is omitted. In the arithmetic unit 230 of the present embodiment, steps S101 to S108, which are performed in parallel with this flow, are provided. These procedures are for detecting a work state (= medium work) that is slightly lighter than heavy work, and adjusting the cooling to a slightly lower temperature side when detected. That is, in step S101, a signal from the forward / reverse operation lever 52 (a signal indicating that the vehicle has been switched to reverse) is input to the detection unit 30a, and the procedure proceeds to step S102.
, The signal is output by the counting unit 130c at 2
It is determined whether the input has been made more than once. If the determination in step S102 is not satisfied, that is, if the number of times of input of the signal from the forward / reverse operation lever 52 per minute is one or less, it is determined that the operation is not a physical burden on the operator, and step S101 is performed. Return to When the determination in step S102 is satisfied, that is, when the signal from the forward / reverse operation lever 52 is input twice or more in one minute, it is determined that the operation is medium, and the process proceeds to step S104.

In step S104, the counting unit 130c further determines whether such an operation state of two times or more for one minute has continued for Tbm = 15 minutes or more. here,
Tbh of procedure S4 for heavy work flow (left flow in the figure)
The reason why the duration is longer than 10 minutes is that the physical burden is lighter than the heavy work, and it is considered that it takes a longer time to feel the heat. This procedure S10
If the determination at step 4 is not satisfied, the procedure returns to step S101 and repeats steps S101 to S104. If the determination in step S104 is satisfied, it is determined that it is necessary to re-adjust the cooling to the low temperature side, and the process proceeds to step S103 to output the drive voltage signal Sb to the relay 232 at the output unit 130d. . As a result, the relay 232 is excited, the wiring 258 becomes conductive, and an electric signal indicating only a small resistance value of the resistor 233 is input into the air conditioner controller 11 regardless of the setting of the variable resistor 12. Therefore, the temperature setting of the cooling device is controlled by the air conditioner controller 11 to be a slightly lower temperature.

After outputting the drive voltage signal Sb in step S103 in this manner, the signal from the forward / reverse operation lever 52 is input to the detection unit 130a again in step S105, and the procedure proceeds to step S105.
At 106, the counting unit 130c determines again whether the reverse operation has been performed twice or more in one minute. When this determination is satisfied, it is determined that the intermediate work state is still continuing, and the process returns to step S103, and repeats steps S103 to S106. If the determination in step S106 is not satisfied, it is determined that the medium work state has already been completed, and the process proceeds to step S107, where the counting unit 1 is determined based on the time measurement information from the clock unit 130b.
30c determines whether or not Tcm = 5 minutes has passed since the end of the middle working state. Here, if the elapsed time is shorter than Tch = 10 minutes in the heavy work corresponding flow (the left flow in the figure) procedure S7, the physical burden is lighter than the heavy work, and it is earlier that the heat is no longer felt. Because it seems.

If the determination in step S107 is not satisfied, the procedure returns to step S103 and repeats steps S103 to S107. If the determination in step S107 is satisfied, it is determined that it is no longer necessary to readjust the cooling to a lower temperature side,
Proceeding to step S208, the relay unit 23
The output of the second drive voltage signal Sb is stopped.

FIG. 16 shows the relationship between the amount of work performed by such control and the output of the drive voltage signals Sa and Sb. As shown in FIG. 16, according to the flow on the right side of FIG. 15 corresponding to the middle work, the elapsed time after the end of the middle work state is Tbm (= 15).
The drive voltage signal Sb is continuously output for a period shorter than (minutes), and the output of the drive voltage signal Sb is stopped after an end delay time of Tcm = 5 minutes elapses after the completion of the middle work. At this time, according to the flow on the left side of FIG. 15 corresponding to the heavy work, the elapsed time after the end of the heavy work state is Tbh.
The drive voltage signal Sa is continuously output for a period shorter than (= 10 minutes), and the output of the drive voltage signal Sa is stopped after the end delay time of Tcm = 10 minutes elapses after the end of heavy work. . As shown in FIG. 16, during heavy work, Sb output during medium work is also output, that is, both drive voltage signals Sa and Sb excite relay 31 and relay 232, and wiring 57 And wiring 2
In this case, since the resistance of the wiring 57 is 0 and smaller than that of the wiring 58, an electric signal indicating the resistance of 0 is input to the air conditioner controller 11. Regarding the start delay time, T
bh (= 10 minutes) <Tbm for medium work, and the end delay time is Tcm for medium work (= 5 minutes) <Tch for heavy work (= 10 minutes). The voltage signal Sa is output earlier than Sb, and ends later. Thus, in other words, when the drive voltage signals Sa and Sb overlap, the effect of the drive voltage signal Sa is prioritized. In the above configuration, the forward / backward operation lever 52,
The procedures S1, S5, S101, and S105 in the flow of FIG. 13 among the control contents of the arithmetic unit 230 constitute an operation state detection unit that detects the operation state of the work machine reflecting the amount of exercise of the operator. Further, steps S2 to S3, steps S6 to S8 shown in the flow of FIG.
Steps S102 to S103, and steps S106 to S108, the relays 31 and 232, and the wires 57 and 2
58 and the resistor 233 constitute a correction means for correcting the cooling / heating condition set and input by the temperature adjustment knob as the input means in accordance with the operation state detected by the operation state detection means. , S6, S102, S106
Constitutes a level determining means for determining whether or not the operation state detected by the operation state detecting means has reached a quantitative reference value as to whether or not to perform the correction, and comprises steps S3, S8 and S103, S108 in FIG. , Relays 31 and 232, wiring 57,
When the level determining means 258 and the resistance 233 have reached the quantitative reference value, they constitute a correction value output means for outputting a predetermined correction value relating to the cooling / heating condition to the adjusting means.

According to the present embodiment, since two types of temperature adjustment, ie, temperature adjustment for heavy work and temperature adjustment for medium work, are used, it is possible to further finely adjust the temperature. That is, for example, if the temperature adjustment is performed only in one step, the cooling temperature may suddenly become the lowest temperature from a certain set temperature and give a feeling of strangeness to the driver. can do.

In the sixth embodiment, the cooling temperature is adjusted in two stages. However, the present invention is not limited to this.
The number of stages can be more than one.
By continuously changing the resistance value using a variable resistor, it is also possible to perform stepless operation. In these cases, finer adjustments can be made. Further, in the sixth embodiment, when the backward movement position switching of the forward / backward operation lever 52 is detected four or more times per minute in the arithmetic unit 30, heavy operation, two or three times of switching are performed. Although the work was performed, this frequency is an example of a criterion for judging the heavy work and the medium work, and is not necessarily limited thereto. In short, it is sufficient if the reference is such that it is possible to judge that the task is a task that places a considerable physical burden on the driver. Further, in the sixth embodiment, the start delay time Tbh = 1
0 minutes, Tbm = 15 minutes, and end delay time Tch = 10
Minutes, Tcm = 5 minutes, but this value is one example,
Not limited to this. It suffices to determine them appropriately according to the individual differences of the drivers, the work mode, the vehicle type of the wheel loader, and the like. Also,
In the first to sixth embodiments, only the method of adjusting the set temperature to the lower temperature side by changing the resistance value of the circuit of the variable resistor 12 for temperature adjustment has been described, but the set temperature is adjusted by another method. May be. The adjustment is not limited to the set temperature in the cooling device, but may be another cooling condition. In other words, for example, the air volume, the amount of outside air introduced, the position of the outlet, and the direction of the outlet (if it has an auto louver function)
May be changed. In these cases, a similar effect is obtained. Also, here, if the initial set temperature of the cooling device is originally the lowest, it is impossible to improve the cooling feeling by further lowering the set temperature, but in a configuration that adjusts the other cooling conditions described above. If so, also in this case, the cooling feeling can be improved. Further, the above-described first to sixth embodiments are characterized in that the dedicated arithmetic unit 3
Although 0, 230, and 330 are provided, the same function may be added to the air conditioner controller 11.

FIGS. 17 to 19 show a seventh embodiment of the present invention.
This will be described below. This embodiment is an embodiment when applied to a heating device in a wheel loader cab. First to first
The same members as those in the sixth embodiment are denoted by the same reference numerals.

FIG. 17 is a circuit conceptual diagram showing the structure of a device for implementing the heating control method according to the present embodiment and a heating device to be controlled. In FIG. 17, a heating device to be controlled includes an indoor unit 340 and a radiator 34 that is a heat exchanger disposed in the indoor unit 340.
0a, and a blower 340b that is disposed in the indoor unit 340, is driven by the motor 315, and supplies warm air generated by the radiator 340a to the room as warm air. Water) is supplied to the radiator 340a through the valve 361,
By releasing heat in the radiator 340a to generate warm air and supplying the warm air to the driver's cab by the blower 340b,
Heating is performed. In addition, in order to avoid complexity of illustration and to clarify the configuration, for convenience, the blower 340b and the motor 315 for driving the blower are illustrated separately.

Here, the apparatus for performing the heating control method of the present embodiment for controlling the operation of the heating apparatus having the above-described configuration is provided with an air volume adjustment switch 313 for the driver to adjust the heating air volume.
And an air volume switching resistor 316 connected so that the resistance is switched in conjunction with the switching of the air volume adjustment switch 313; a power source 310 serving as a voltage source for a motor 315 of the blower 340b; A resistor 334 provided on a wiring 343 connecting to the switch 313. And the air volume adjustment switch 31
3, the air volume switching resistor 316 is switched according to the position set by the driver, whereby the resistance value in the electric circuit from the power supply 310 to the motor 315 of the blower 340b changes stepwise, The blower 340b is driven so that the air volume is set by the driver,
The heating capacity is adjusted.

[0081] Among the apparatuses for performing the heating control method of the present embodiment, the configuration up to here is almost the same as that of the conventional heating control apparatus. The part that is newly added for the purpose of changing the heating according to the work state, which is the most significant feature of the heating control method of the present embodiment, has the following configuration. That is, the forward position (shown by F in the figure) of the electric forward / reverse operation lever 352 (the same lever as the forward / backward operation lever 52 described in the first to sixth embodiments) provided in the wheel loader. It is connected to the reverse position among the neutral position (indicated by N in the figure) and the reverse position (indicated by R in the figure), and a switching signal is input when the forward / reverse operation lever 52 is at the reverse position. Arithmetic unit 3 for detecting this
And a relay 335 which is provided on a wiring 342 branched in parallel from a wiring 343 connecting the power supply 310 and the air volume changeover switch 313 and which is opened and closed when excited by a driving voltage output from the arithmetic unit 30.

FIG. 18 is a functional block diagram showing the control contents of the arithmetic unit 330, and FIG. As shown in FIG. 18, the arithmetic device 330 corresponds to a device in which the arithmetic device 30 of the first embodiment is applied to heating, and receives a switching signal when the forward / reverse operation lever 52 is at the reverse position. Detecting section 330a, a clock section 330b having a timing function, and a count for receiving the signal from the detecting section 330a and the signal from the clock section 330b and counting the number of signals input to the detecting section 330a in one minute. It has a unit 330c and an output unit 330d that outputs a drive voltage signal Sc for the relay 335 when the counting unit 330c counts four or more times per minute. With these configurations, the arithmetic unit 330 executes the control contents shown in the flow of FIG. 19 as a whole.

That is, in FIG.
In step S201, a signal from the forward / reverse operation lever 52 (a signal indicating that the vehicle has been switched to the reverse direction) is input to the detection unit 330a in step S201. In step S202, the signal is output four times or more per minute by the counting unit 330c. Determine whether the input has been made. When the determination in step S202 is not satisfied, that is, when the number of times of input of the signal from the forward / reverse operation lever 52 per minute is three or less, it is determined that the operator is not so-called heavy work that places a hard physical burden on the operator. Then, the procedure returns to step S201.

On the other hand, when the determination in step S202 is satisfied, that is, when the signal from the forward / reverse operation lever 52 is input four times or more in one minute, it is determined that the work is heavy, and the process proceeds to step S203. .

In step S3, the output unit 330d controls the relay 3
The drive voltage signal Sc is output to 35. As a result, the relay 335 is excited, the wiring 342 is cut off, and the power supply 3
A new resistor 33 is provided between the switch 10 and the air volume adjustment switch 313.
4 will be added. Therefore, the air volume adjustment switch 3
Regardless of the switching position of 13, the rotation speed of the motor 315 of the blower 340 b decreases by that amount, and the heating capacity decreases.

In the above configuration, the air volume adjustment switch 313 constitutes an input means capable of setting and inputting the cooling and heating conditions of the cooling and heating device for cooling and heating the inside of the cab. The adjusting means for adjusting the operation of the cooling and heating device so as to satisfy the cooling and heating conditions set and input by the air volume adjusting switch 313 is a means for controlling the forward / backward operation lever 352 and the arithmetic device 330 in the flow of FIG. The procedure S201 in the step S201 constitutes an operation state detecting means for detecting the operation state of the work machine reflecting the amount of movement of the operator. The arithmetic unit 33
Procedure S2 shown in the flow of FIG.
02 and S203, the relay 335, and the wiring 342 constitute a correction unit that corrects the cooling / heating condition set and input by the air volume adjustment switch 313, which is an input unit, in accordance with the operation state detected by the operation state detection unit, Figure 1
Ninth step S202 constitutes a level determining means for determining whether or not the operation state detected by the operation state detecting means has reached a quantitative reference value of whether or not to perform correction, and a step S203 in FIG. When the level determination means determines that the reference value 335 and the wiring 342 have reached the quantitative reference value, they constitute a correction value output means for outputting a predetermined correction value relating to the cooling / heating condition to the adjustment means.

As described above, according to the present embodiment, even when the driver feels hot under the initial setting due to the physical load of heavy work in the wheel loader 1, the arithmetic unit 330 can be operated. The relay 335 is excited by outputting the drive voltage signal Sc, and the blower 34 of the heating device is
0b of the motor 315 decreases in rotation speed, heating is weakened,
The heat can be eliminated automatically. Therefore, a comfortable heating feeling can always be given to the driver regardless of the work state and the duration of the work. Therefore, the driver can be released from the complicated heating adjustment operation of the air volume, so that the driver can concentrate on the operation of the wheel loader main body, and the efficiency and the safety can be improved.

In the seventh embodiment, the simplest case is the one-stage adjustment with no delay time. However, as in the first to sixth embodiments, the fixed / variable start / stop operation is performed.
Set an end delay time, perform multi-stage adjustment, and also, besides the air volume, the outside air introduction amount, set temperature, outlet position,
The blowing direction (when having an auto louver function), the flow rate of hot water (engine cooling water), and the like may be adjusted. In these cases, a similar effect is obtained. In the first to seventh embodiments, the function of adjusting (changing) the cooling / heating operation condition is always ON. However, the present invention is not limited to this, and a main switch capable of turning ON / OFF this function is provided. It may be left to the driver. Further, in the first to seventh embodiments, the wheel loader has been described as an example of the working machine. However, the present invention is not limited to this. For example, a hydraulic shovel, a construction machine such as a mechanical shovel such as a drag line, In addition, the present invention can be applied to a work vehicle, a fixed machine, and the like that give a hard physical burden to an operator. In these cases, a similar effect is obtained. In the first to seventh embodiments, the forward / backward operation lever 5 of the wheel loader 1 is set as the operation state reflecting the amount of movement of the operator.
Although the number of switching signals per unit time at the time of the second reverse position is used, the present invention is not limited to this, and another operation state may be detected. Modifications regarding this operation state will be sequentially described below.

(1) Case of Detecting the Number of Operation of Work Machine Lever That is, for example, the case of detecting the number of operation of the work machine lever 56 for operating the bucket 1A and the lift arm in the wheel loader 1. Generally, the operation of lowering the lift arm is almost equal to twice per cycle, although it is somewhat affected by the type of soil and the skill of the driver. Accordingly, by detecting the operation of the work machine lever 56 in the lift arm lowering direction, for example, by counting the number of operations in the lowering direction in one minute, the reversing position of the forward / reverse operating lever 52 in the first to seventh embodiments is obtained. Like the number of times of the switching signal, it is used as a criterion for judging whether or not the work is heavy, and the same operation and effect can be obtained.

(2) Detecting the Depressed Position and Dependent Time of the Accelerator Pedal That is, for example, detecting the depressed position and depressed time of the accelerator pedal 53 in the wheel loader 1. In general, in V-type loading, the accelerator pedal 53 is kept depressed except when switching between forward and reverse travels. Therefore, a limit switch or the like is provided on the accelerator pedal 53 to detect the depressed time, and for example, one minute. By calculating the ratio of the occupation, the same operation and effect can be obtained as in the first to seventh embodiments by using the forward / reverse operation lever 52 as a reference for determining whether or not heavy work is performed, similarly to the reverse position switching signal. be able to. However, in this case, from the viewpoint of excluding the above-mentioned economic speed operation, it is preferable to detect only when the stepping amount is a certain amount or more.

(3) Detecting the Number of Depressions of the Brake Pedal That is, for example, detecting the operation position of the brake pedal 54 in the wheel loader 1. In general,
In one cycle of V-type loading, when there is a lot, when the vehicle moves forward from the stop position toward the earth and sand pit 3 and stops; The brake pedal 54 is depressed four times when the vehicle stops and when the vehicle moves backward after the loading is completed and stops at the originally stopped position. Accordingly, a limit switch or the like is provided on the brake pedal 54 to detect the number of times the brake pedal 54 is depressed, and count the number of times for one minute, for example. In the same manner as described above, it can be used as a criterion for determining whether or not heavy work is performed, and the same operation and effect can be obtained. It should be noted that, depending on the driver, there may be three times by omitting one time and two times by omitting two times. In this case,
What is necessary is just to change the number of judgment criteria appropriately according to these.

(4) Detecting the Number of Depressions of Inching Pedal That is, for example, detecting the number of times of depressing the inching pedal 55 for traveling at a low speed in the wheel loader 1. Generally, in the wheel loader 1 having the inching pedal 55, the brake pedal 54 is not often used and the inching pedal 55 is used in many cases. Therefore, in the case of the wheel loader 1 with the inching pedal 55, it is more preferable to detect with the inching pedal 55 than with the brake pedal 54. Also in this case, similarly to the case of the brake pedal 54 in the above (3), when there is a large amount, when the vehicle moves forward from the stop position toward the earth and sand pit 3 and stops; When moving forward toward 2 and stopping;
When the vehicle moves backward after the loading is completed and stops at the original stop position, the inching pedal 55 is depressed four times. Therefore, by providing a limit switch or the like to the inching pedal 55 and detecting the number of times the pedal is depressed, for example, by counting the number of times in one minute, the reverse position switching signal of the forward / reverse operating lever 52 in the first to seventh embodiments is obtained. In the same manner as described above, it can be used as a criterion for determining whether or not heavy work is performed, and the same operational effects can be obtained. In addition, similarly to the above (3),
Depending on the driver, one time may be omitted and three times may be omitted, or two times may be omitted and two times may be omitted. Therefore, the number of times of the determination criterion may be appropriately changed according to these. .

(4) A case where a change in the steering angle is detected. That is, a case where a change in the steering angle of the steering 51 is detected in the wheel loader 1, for example. Generally, steering is not frequently performed when the vehicle is stopped or forwarded, but the steering 51 is usually operated frequently during work. Therefore, for example, by attaching a gear to the rotating shaft of the steering, sensing the teeth of the gear with a rotation sensor, detecting the steering angle as the number of pulses, and calculating the integrated steering angle for one minute,
Similar to the reverse position switching signal of the forward / reverse operation lever 52 in the seventh embodiment, it can be used as a criterion for determining whether or not heavy work is performed, and the same operation and effect can be obtained.

(5) A case where the operation of the work machine itself is detected. That is, for example, a case where the operation of the lift arm which is one of the work machines of the wheel loader 1 is detected. As described above in (1) above, generally, the operation of lowering the lift arm is almost equal to twice per cycle, though slightly affected by the type of soil and the skill of the driver. Therefore, by providing a dedicated limit switch for directly detecting the lift arm lowering operation, for example, by counting the number of lowering operations per minute, the reverse position switching signal of the forward / reverse operating lever 52 in the first to seventh embodiments is provided. In the same manner as described above, it can be used as a criterion for determining whether or not heavy work is performed, and the same operation and effect can be obtained.

(6) When the Number of Outputs of the Hold Release Signal of the Work Machine Operation Lever Detent Apparatus is Used That is, in general, in the wheel loader 1, when loading earth and sand into the bucket 1A, the bucket 1A is placed at the position where the lift arm is lowered. Must be horizontal. However, when the bucket 1A is tilted while the lift arm is lowered and the lift arm is lowered after the bucket 1A is dumped by dumping the bucket 1A to raise the lift arm, the vertical position of the lift arm and the direction of the bucket are linked to move and operate. It is difficult for the user to make the bucket 1A horizontal properly. Therefore, when the work equipment operation lever 56 is operated at the stroke end in the bucket tilt direction, the operation lever is held by the operation lever detent device, and the bucket 1A is moved to a predetermined horizontal position by a signal from a sensor for detecting the extension of the bucket cylinder. When the position is reached, the holding is released. Therefore, by counting the number of outputs of the holding release signal from the sensor, for example, in one minute, whether or not heavy work is performed is determined in the same manner as the reverse position switching signal of the forward / reverse operation lever 52 in the first to seventh embodiments. It can be used as a criterion to determine the same effect.

(7) Using Operation State Detection Signal to Auto-idle System In other words, the hydraulic excavator is equipped with an auto-idle system that automatically reduces the engine speed to the idling speed in a non-operation state for a predetermined time. There are things that are. A signal corresponding to, for example, a pilot pressure for stroke of a control valve is guided to this auto-idle device, and all the operation levers are brought into a non-operation state, thereby causing
After a few seconds, the speed is reduced. Therefore,
By using this signal, for example, by calculating the ratio of the non-operation state for one minute, whether or not heavy work is performed as in the case of the reverse position switching signal of the forward and backward operation lever 52 in the first to seventh embodiments. (For example, if there is no operation for 15 seconds or more, it is not heavy work), the same operation and effect can be obtained.

(8) Case of Detecting Change in Acceleration at Vibration Level That is, for example, in the case of the wheel loader 1, vibration of the vehicle body is detected by a vibration sensor (such as an acceleration sensor) provided on the vehicle body. In general, in V-type loading, the direction of acceleration changes greatly when switching between forward and reverse,
It changes four times in one cycle. Therefore,
The vibration sensor detects the vibration (acceleration) level of the vehicle body, and counts the number of changes in the acceleration direction in one minute, for example, to obtain the reverse position switching signal of the forward / reverse operation lever 52 in the first to seventh embodiments. It can be used as a criterion for determining whether or not heavy work is performed, and the same operation and effect can be obtained.

(9) Case of Detecting Fuel Consumption That is, for example, a case of detecting fuel consumption in the wheel loader 1 provided with a fuel efficiency meter or an operation management system. In general, a 10-ton class wheel loader 1 consumes about 10 to 15 liters / hour (= 250 cc / 1 minute) of fuel in full operation. Therefore, for example, when 60 cc is consumed per 20 seconds, this can be regarded as a heavy work. Therefore, as a criterion similar to the reverse position switching signal of the forward / reverse operation lever 52 in the first to seventh embodiments, Utilizing the same function and effect can be obtained.

(10) When Detecting the Engine Speed That is, for example, in the wheel loader 1, usually,
To increase the working speed, the accelerator pedal is depressed further, and the engine speed increases. Since this engine speed has already been detected by a tachometer or the like,
Using this detection signal, for example, the maximum rotational speed 2300r
1900 rpm for models that are set to
Heavy work if rising to about 1700-18
In the case of about 00 rpm, it can be regarded as a medium operation. As a result, the same operation and effect can be obtained by using the same reference as the reverse position switching signal of the forward / reverse operation lever 52 in the first to seventh embodiments.

[0100]

According to the present invention, even when the operator feels hot when the initial setting is maintained due to the physical burden of heavy work, the heat can be automatically eliminated, so that the work condition and Regardless of the duration of the work, a comfortable cooling and heating feeling can always be given to the operator. That is, for example, when the physical required comfort temperature of the driver is different, such as during work and standby, the cooling and heating conditions are automatically changed in accordance with this, and the operator is required to perform complicated air conditioning and heating adjustment operations such as airflow and temperature. Can be released from
Therefore, the operator can concentrate on the operation of the work machine body,
Efficiency and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a circuit conceptual diagram illustrating a configuration of a control device that executes a cooling control method according to a first embodiment of the present invention and a cooling device to be controlled by the control device.

FIG. 2 is a functional block diagram illustrating control contents of an arithmetic unit illustrated in FIG. 1;

FIG. 3 is a flowchart showing the control contents of the arithmetic unit shown in FIG.

FIG. 4 is a diagram showing a relationship between a work amount and a drive voltage signal output by the control of FIG. 3;

FIG. 5 is a flowchart showing control contents of an arithmetic unit provided in a control device for performing a cooling control method according to the second embodiment of the present invention.

FIG. 6 is a diagram illustrating a relationship between a work amount and a drive voltage signal output by the control of FIG. 5;

FIG. 7 is a flowchart illustrating the control content of an arithmetic unit provided in a control device that executes the cooling control method according to the third embodiment of the present invention.

8 is a diagram showing a relationship between the amount of work and the output of a drive voltage signal by the control of FIG. 7;

FIG. 9 is a flowchart showing control contents of an arithmetic unit provided in a control device for performing the cooling control method according to the fourth embodiment of the present invention.

10 is a diagram showing a relationship between the amount of work and the output of a drive voltage signal by the control of FIG. 9;

FIG. 11 is a flowchart showing control contents of an arithmetic unit provided in a control device that executes a cooling control method according to a fifth embodiment of the present invention.

12 is a diagram showing a relationship between the amount of work and the output of a drive voltage signal by the control of FIG. 11;

FIG. 13 is a circuit conceptual diagram showing a configuration of an apparatus for implementing a cooling control method according to a sixth embodiment of the present invention and a cooling apparatus to be controlled by the apparatus.

FIG. 14 is a functional block diagram showing the control contents of the arithmetic unit shown in FIG.

FIG. 15 is a flowchart showing control contents of the arithmetic unit shown in FIG.

16 is a diagram showing a relationship between the amount of work and the output of a drive voltage signal by the control of FIG.

FIG. 17 is a circuit conceptual diagram illustrating a configuration of a device that performs a heating control method according to a seventh embodiment of the present invention and a heating device to be controlled by the device.

18 is a functional block diagram illustrating control of the arithmetic device illustrated in FIG. 17;

FIG. 19 is a flowchart showing the control contents of the arithmetic unit shown in FIG.

FIG. 20 is a perspective view conceptually showing a V-type loading situation.

21 is a layout view of a wheel loader shown in FIG. 20 in a driver's seat.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wheel loader 2 dump truck 3 earth and sand pile 10 power supply 11 air conditioner controller 12 variable resistor 13 air volume adjustment switch 14 temperature sensor 15 motor 16 air volume switching resistor 20 capacitor 21 compressor 22 indoor unit 22a evaporator 22b blower 30 arithmetic unit 31 relay 51 steering wheel 52 Forward / backward operation lever 53 Accelerator pedal 54 Brake pedal 55 Inching pedal 56 Work implement operation lever 57 Wiring 59 Liquid tank 60 Expansion valve 230 Arithmetic unit 232 Relay 233 Resistance 258 Wiring 310 Power supply 313 Air volume adjustment switch 315 Motor 316 Air volume switching resistance 330 Arithmetic unit 334 Air volume switching resistor 335 Relay 340 Indoor unit 340a Radiator Data 340b blower

Claims (22)

[Claims] 1. An air conditioner for a working machine, which inputs and sets the air conditioning condition of an air conditioner for cooling and heating the cab provided in the work machine, and adjusts the operation of the air conditioner so that the set air condition is satisfied. In the control method, an operation state of the work machine reflecting an amount of movement of an operator is detected, and the cooling and heating condition is corrected according to the operation state. 2. The cooling and heating control method for a working machine according to claim 1, wherein the cooling and heating conditions to be set and inputted include an air volume of a cooling and heating device of the working machine, a cooling and heating set temperature, a position of a hot and cold air outlet, and a hot and cold air blowing. A cooling and heating control method for a work machine, wherein at least one of the directions is used. 3. The cooling and heating control method for a work machine according to claim 1, wherein the correction of the cooling and heating condition is performed after determining whether or not the detected operation state has reached a reference value of whether or not to perform the correction. And performing a predetermined correction relating to the cooling and heating condition when it is determined that the reference value has been reached. 4. The cooling and heating control method for a work machine according to claim 1, wherein when the correction of the cooling and heating condition is started, the correction is started with a predetermined delay time. 5. The air conditioning control method for a work machine according to claim 4, wherein if the operation state becomes a value that does not require correction before the predetermined delay time elapses, the correction of the air conditioning condition is performed. A method for controlling the cooling and heating of a working machine, wherein the control is not performed. 6. The cooling and heating control method for a work machine according to claim 1, wherein when the correction of the cooling and heating condition is completed, the correction is completed with a predetermined delay time. 7. The cooling and heating control method for a work machine according to claim 6, wherein, if the operation state becomes a value that needs to be corrected before the predetermined delay time has elapsed, the correction of the cooling and heating device is performed. A method for controlling the cooling and heating of a work machine, wherein the control is continued without terminating. 8. The cooling and heating control method for a work machine according to claim 4, wherein the delay time is changed according to the operation state. 9. The method according to claim 1, wherein a plurality of types of correction amounts are set at the time of the correction.
A method for controlling the cooling and heating of a working machine, wherein the correction is performed using any one of the plurality of types of correction amounts according to the operation state. 10. The work machine cooling / heating control method according to claim 1, wherein the number of operations per unit time of a front / reverse operation lever for switching between front / reverse of the work machine as the operation state is detected. A cooling and heating control method for a working machine, wherein the cooling and heating condition is corrected according to the number of times. 11. The work machine cooling / heating control method according to claim 1, wherein, as the operation state, the number of operation times per unit time of a work machine lever for operating a work machine provided in the work machine is detected. A cooling and heating control method for a working machine, wherein the cooling and heating condition is corrected according to the number of operations. 12. The method for controlling the cooling and heating of a work machine according to claim 1, wherein, as the operation state, a depression position of an accelerator pedal for driving the work machine and a ratio of a depression time per unit time are detected. A cooling and heating control method for a working machine, wherein the cooling and heating condition is corrected in accordance with a depression state. 13. The method for controlling the cooling and heating of a work machine according to claim 1, wherein the number of steps per unit time of a brake pedal for stopping the traveling of the work machine is detected as the operation state, and according to the number of steps, A cooling and heating control method for a working machine, wherein the cooling and heating condition is corrected. 14. The method for controlling the cooling and heating of a work machine according to claim 1, wherein the operating state is determined by the number of times of depressing an inching pedal for causing the working machine to travel at a low speed per unit time. A method for controlling the cooling and heating of a working machine, comprising correcting the cooling and heating conditions. 15. The working machine cooling and heating control method according to claim 1, wherein the operating state is guided to an auto-idle switch that brings the engine into an idling state when the working machine is not operated for a predetermined time. A method for controlling the cooling and heating of a work machine, comprising: detecting a ratio of a signal representing a unit time per unit time, and correcting the cooling and heating condition according to the ratio. 16. The work machine cooling / heating control method according to claim 1, wherein a steering angle change per unit time of a steering wheel for performing a steering operation of the work machine is detected as the operation state, and the steering angle is changed according to the angle change. And a method for controlling the cooling and heating of the working machine, wherein the cooling and heating conditions are corrected. 17. The work machine cooling / heating control method according to claim 1, wherein the work machine is a wheel loader having a bucket and a lift arm as a work machine, and the operation state is determined according to an operation of the lift arm. Detect the number of outputs per unit time of the holding release signal to the operating lever detent device that holds the operating lever at the neutral position in order to make the direction of the bucket constant, and correct the cooling and heating conditions according to the number of outputs. A method for controlling the cooling and heating of a working machine, the method comprising: 18. The work machine cooling / heating control method according to claim 1, wherein the number of changes in the acceleration direction per unit time in the vibration level of the work machine is detected as the operation state, and the cooling / heating is performed according to the number of changes. A method for controlling the cooling and heating of a working machine, comprising correcting a condition. 19. The work machine cooling / heating control method according to claim 1, wherein a fuel consumption per unit time of the work machine is detected as the operation state, and the cooling / heating condition is corrected according to the fuel consumption. A method for controlling the cooling and heating of a working machine. 20. An input means capable of setting and inputting cooling and heating conditions of a cooling and heating apparatus provided in a work machine for performing cooling and heating of a cab, and the cooling and heating apparatus is set such that the cooling and heating conditions are set and input by the input means. A work machine cooling / heating control device having an adjustment means for adjusting an operation, wherein: an operation state detection means for detecting an operation state of the work machine reflecting an amount of movement of an operator; and the operation state detected by the operation state detection means Correction means for correcting the cooling and heating condition set and input by the input means, and the adjusting means corrects the operation of the cooling and heating device so that the cooling and heating condition is corrected by the correction means. A cooling and heating control device for a working machine, comprising: 21. The cooling and heating control apparatus for a work machine according to claim 20, wherein the correction means determines that the operation state detected by the operation state detection means has reached a quantitative reference value of whether or not to perform correction. Level determination means for determining whether or not, when the level determination means has determined that the quantitative reference value has been reached, a correction value output means for outputting a predetermined correction value related to the cooling and heating conditions to the adjustment means, A cooling and heating control device for a working machine, comprising: 22. The air conditioning system for a work machine according to claim 20, wherein a plurality of types of correction amounts are set by the correction means, and one of the plurality of types of correction amounts is selected according to the operation state. A cooling and heating control device for a working machine, wherein the correction is performed.