JP3690641B2 - Battery forklift - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for automatically clearing values of total operating time and travel distance displayed on a battery forklift display.
[0002]
[Prior art]
FIG. 4 is a side view showing an example of a battery forklift. Shown here is a counterbalance type battery forklift. In the drawing, a fork 21 is provided at the front portion of a vehicle body 100, and the fork 21 is attached to a lift bracket 36 supported by a mast 22 so as to be movable up and down. 23 is a steering handle for operating the traveling direction of the vehicle body 100, 24 is an operation lever for raising / lowering the fork 21, and tilting forward / backward, and the operation lever 24 is provided with two types for raising / lowering and for tilting. Yes. Reference numeral 25 denotes a machine base in which a hydraulic pump or the like is housed. A front wheel 26 and a rear wheel 27 are provided before and after the machine base 25. 28 is a seat on which the driver is seated, 29 is a head guard provided above the seat 28 to protect the driver from falling objects, and 30 is a pillar that supports the head guard 29.
[0003]
Reference numeral 31 denotes a weight for balancing the weight of the front and rear of the vehicle body 100, reference numeral 32 denotes a battery housing part in which a battery for driving the forklift is built, and reference numeral 33 denotes an openable / closable battery cover that covers the battery housing part 32. 34 is a lift cylinder for raising and lowering the fork 21, and 35 is a tilt cylinder for tilting the fork 21 forward and backward. Both the lift cylinder 34 and the tilt cylinder 35 are constituted by hydraulic cylinders, and are driven via a hydraulic pump by operating the lever 24 so that the fork 21 is moved up and down and tilted forward and backward.
[0004]
In the battery forklift as described above, the display 11 for displaying the total operation time and the travel distance of the vehicle body 100 is provided in the driver's seat. These operating time and travel distance are measured by a measuring device such as a timer or an encoder, and the integrated value is displayed on the display 11. In addition, the display 11 displays the remaining amount of the battery, the traveling speed, etc. in addition to the total operating time and the traveling distance.
[0005]
By the way, the values of the operating time and distance displayed on the display device 11 need to be cleared to zero by performing a trip operation at an appropriate time. For this reason, a trip is conventionally performed by pressing a trip switch (not shown) provided in the driver's seat.
[0006]
[Problems to be solved by the invention]
However, it is troublesome for the operator to press the trip switch each time, and the display value may not be cleared due to forgetting to press the switch. When the trip switch is pressed, all data is lost. Therefore, it is necessary to record data before the trip operation.
[0007]
The present invention solves the above-described problems, and an object thereof is to provide a device that does not take time and can reliably perform a trip.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a battery forklift equipped with a display for displaying the total operating time and travel distance of a vehicle body, when the battery charging time has passed a predetermined time, or when the current time is the set time. When it reaches, a control means for automatically clearing the values of the total operation time and the travel distance displayed on the display to zero is provided .
[0009]
By doing this, when a certain condition is satisfied under automatic mode, the trip value is automatically cleared and the displayed value is cleared, so there is no need to press the trip switch each time as in the past, This saves you the trouble of forgetting to press the switch.
[0010]
Further, in the present invention, prior to the trip, the total operation time and the travel distance are backed up and stored.
[0011]
In this way, even if a trip is automatically performed, time and distance data are not lost, and past data can be taken out when necessary.
[0012]
In the present invention, a changeover switch that selectively switches between the manual mode and the automatic mode is provided, and when the changeover switch is set to the manual mode, the trip can be manually performed by pressing the trip switch. it can.
[0013]
In this case, data loss can be prevented by automatically backing up and saving the values of the total operating time and travel distance after the trip switch is turned on.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, since the whole structure of the forklift according to the present invention is the same as that of FIG. 4, hereinafter, FIG. 4 is cited as an embodiment of the present invention.
[0015]
FIG. 1 is a block diagram showing an electrical configuration of a trip device according to the present invention. In the figure, reference numeral 1 denotes a control unit as control means for controlling the entire apparatus, and a changeover switch 2, a trip switch 3, and a key switch 4 are connected to the input side thereof. Each of these switches is provided at an appropriate position in the driver's seat. The control unit 1 includes a microcomputer, and includes an interface 5, a CPU 6, an LCD drive circuit 7, a RAM 8, a ROM 9, and a timer 10. Reference numeral 11 denotes the above-described display driven by the LCD drive circuit 7, and here, a liquid crystal display is used.
[0016]
FIG. 2 is a diagram illustrating an example of the screen of the display 11. Reference numeral 12 denotes a speed display unit that displays the traveling speed, 13 denotes a setting unit that sets acceleration force and accelerator feeling, 14 denotes a time display unit (hour meter) that displays the total operating time of the vehicle body 100, and 15 denotes a travel distance of the vehicle body 100. Is a distance display unit (distance meter), and 16 is a remaining battery level display unit for displaying the remaining battery level.
[0017]
FIG. 3 is a flowchart for explaining a trip operation in the configuration of FIG. 1 and shows a procedure executed by the CPU 6. Hereinafter, this operation will be described. First, it is determined whether or not the key switch 4 is turned on (step S1). If the key switch 4 is not on (step S1 NO), the process ends. If the key switch 4 is on (step S1 YES), it is determined whether the changeover switch 2 is switched to the automatic mode side or the manual mode side. (Step S2).
[0018]
If it has been switched to the automatic mode side (step S2 YES), it is next determined whether the automatic trip condition is set according to the time or the battery charging time (step S3). This determination may be made by checking the state of the change-over switch 2 by providing the change-over switch 2 with a charge time / time setting changeover function in addition to the automatic / manual mode changeover function. A setting switch may be provided separately from 2 and the state of this switch may be checked. Alternatively, it can be set on the program of the CPU 6.
[0019]
If the automatic trip condition is not set by the time (step S3 NO), the condition is set after the battery charging time has elapsed, and it is determined whether or not the charging time is a predetermined time, for example, 5 hours or more ( Step S4). The charging time is measured by the timer 10. Here, the time of 5 hours is an example, and can be set to an arbitrary value. On the other hand, if the condition is set by time (step S3 YES), it is determined whether or not the current time has reached a set time, for example, 8 am (step S7). The current time is measured by the timer 10. Note that the time of 8 am is also an example, and can be set to an arbitrary time.
[0020]
If the charging time is longer than a certain time in step S4 (step S4 YES), or if the current time has reached the set time in step S7 (step S7 YES), the total operation displayed on the time display unit 14 The time value and the travel distance value displayed on the distance display unit 15 are backed up and stored in the RAM 8 (step S5). Thereafter, a trip operation is performed to clear the total operating time and travel distance values to zero (step S6).
[0021]
On the other hand, if the charging time is less than 5 hours in step S4 (step S4 NO), or if the current time has not reached the set time in step S7 (step S7 NO), the operation ends without performing a trip operation.
[0022]
In step S2, if the changeover switch 2 is in the manual mode (NO in step S2), it is determined whether or not the trip switch 3 is turned on (step S8). If the trip switch 3 is not turned on (NO in step S8), the process ends. If the trip switch 3 is turned on (YES in step S8), the process proceeds to step S5, and the values of the total operation time and the travel distance are backed up and stored. A trip is performed to clear these values to zero (step S6). In this case, the manual trip operation is the same as the conventional one, but since the backup process is automatically performed after the trip switch 3 is turned on, no data is lost.
[0023]
As described above, when the mode is the automatic mode, the trip is automatically performed by satisfying certain conditions such as the battery charging time and time, so the operation time can be obtained without pressing the trip switch. As a result, the trip distance is surely cleared to zero.
[0024]
Further, since the data of the operating time and the travel distance are backed up and saved before the trip, for example, by backing up the data for the past one week, the required data can be taken out as necessary.
[0025]
Further, when the mode is set to the manual mode, the trip can be manually performed at an arbitrary time by operating the trip switch 3. Even in this case, since the data is automatically backed up, there is no problem that data is lost due to forgetting to record.
[0026]
Although the counter balance type battery forklift has been described as an example in the above embodiment, the present invention can be applied to all types of battery forklifts such as a reach type.
[0027]
【The invention's effect】
According to the present invention, when a predetermined condition is satisfied, the trip is automatically performed, so that the trouble of the trip operation can be saved and the trip can be surely performed.
[0028]
Further, since the data is backed up and stored prior to the trip, there is no risk of data loss even if the trip is automatically performed, and the reliability is improved.
[0029]
Further, since a switch for switching between the automatic mode and the manual mode is provided and the trip is performed by pressing the trip switch in the manual mode, a manual trip operation can be performed at an arbitrary time. In this case as well, data loss can be prevented in advance by performing data backup processing before the trip.
[Brief description of the drawings]
FIG. 1 is a block diagram of a trip device according to the present invention.
FIG. 2 is a diagram showing a screen of a display device.
FIG. 3 is a flowchart illustrating a trip operation.
FIG. 4 is a side view showing a battery forklift.
[Explanation of symbols]
1 Control Unit 2 Switch 3 Trip Switch 4 Key Switch 6 CPU
10 Timer 11 Display 14 Time display unit 15 Distance display unit

Claims (2)

In a battery forklift equipped with an indicator that displays the total operating time and mileage of the vehicle body, when the battery charging time has passed a predetermined time or when the current time has reached the set time, the indicator is displayed on the indicator. Provide control means for automatically clearing the total operating time and mileage values to zero, and the control means backs up and stores the total operating time and mileage values prior to clearing the display Battery forklift characterized by When a changeover switch for selectively switching between manual mode and automatic mode and a trip switch for manually clearing the total operating time and travel distance values to zero are provided, and the changeover switch is set to manual mode When the trip switch is turned on, the values of the total operation time and the travel distance are cleared to zero, and after the trip switch is turned on, the control means backs up and stores the values of the total operation time and the travel distance. The battery forklift according to claim 1 .

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