JP5698930B2 - Operation instruction device and work vehicle - Google Patents

Description

  The present invention relates to an operation instruction device and a work vehicle.

  Conventionally, in a work vehicle equipped with a work machine such as a construction machine, a technique for supplying appropriate power to the operation of the work machine by controlling the engine speed or adjusting the discharge amount of the variable displacement pump is disclosed. Has been.

  For example, Patent Document 1 describes a hydraulic pump discharge amount control device that detects the flow rate flowing through a hydraulic actuator and controls the discharge amount of a variable displacement pump to match the hydraulic actuator flow rate. According to this configuration, the hydraulic oil discharged from the hydraulic pump can be used efficiently.

JP-A-8-232905

  However, the discharge amount control device of Patent Document 1 has a problem that the cost increases because a control device for a variable displacement pump is required. Furthermore, when the accelerator is automatically controlled, the operator cannot operate as expected and the operability is deteriorated.

  Therefore, an object of the present invention is to provide an operation instruction device that is excellent in operability while suppressing costs, and a work vehicle including the operation instruction device.

In order to achieve the above object, an operation instruction device according to the present invention is an operation instruction device for instructing an operation content to an operator of a work machine, and is actually applied to a work machine driven by hydraulic pressure and the work machine. supply means for increasing or decreasing by manual operation of the feed oil amount supplied to the said oil supply amount actually supplied to the working machine, the drive oil amount actually used to drive the working machine, the It is characterized by comprising determination means for determining magnitude, and instruction means for instructing an operator to perform an energy saving operation based on the determination by the determination means.
The drive oil amount is calculated based on a posture of the work implement or a change in the posture of the work implement and structure information of the work implement.
Further, the drive oil amount is calculated based on an operation amount of an operating means for operating the work machine and structure information of the work machine.

  As described above, the operation instruction device according to the present invention includes a hydraulically driven work machine, supply means for increasing or decreasing the supply oil amount by human operation, and the supply oil amount and the drive oil amount used for driving the work machine. Determination means for determining magnitude, and instruction means for instructing an operator to perform an energy saving operation based on the determination by the determination means.

  For this reason, the amount of supplied oil exceeds the amount of drive oil, and an energy saving operation can be promoted by instructing the operator that the operating speed of the work implement does not increase even if the amount of supplied oil is increased.

  Furthermore, since the operator artificially increases or decreases the amount of supplied oil in accordance with the instruction, the amount of supplied oil is automatically adjusted so that the intended operation can not be performed and the operation becomes easy.

FIG. 2 is a block diagram illustrating an overall configuration of a control system of the operation instruction apparatus according to the first embodiment. It is a side view explaining the whole structure of a rough terrain crane. It is a block diagram explaining the structure of the drive oil amount calculation means of Example 1. FIG. It is a block diagram explaining the structure of the supply oil amount calculation means of Example 1. FIG. It is a block diagram explaining the whole structure of the control system of the operation instruction apparatus of Example 2. It is a block diagram explaining the structure of the drive oil amount calculation means of Example 2. It is a block diagram explaining the structure of the supply oil amount calculation means of Example 2. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Mechanical structure]
First, the configuration of the mechanical system will be described. In addition, although the case where the operation instruction apparatus 2 is applied to the rough terrain crane 1 as a work vehicle will be described below, the present invention is not limited to this, and an artificial accelerator operation is required for driving the work machine instead of automatic control. The present invention can be applied to all terrain cranes and aerial work vehicles.

  A rough terrain crane 1 as a work vehicle including the operation instruction device 2 according to the present embodiment includes a vehicle body 10 serving as a main body portion of a vehicle having a traveling function and outriggers provided at four corners of the vehicle body 10 as shown in FIG. 11..., A swivel base 12 attached to the vehicle body 10 so as to be horizontally turnable, and a boom 14 attached to a bracket 13 erected on the turntable 12.

  The swivel base 12 has a pinion gear to which the power of the hydraulic motor is transmitted, and rotates (turns) when the pinion gear meshes with a circular gear provided in the vehicle body 10 and rotates.

  In addition, the swivel base 12 is provided with a cockpit 12a, and an operation lever 55 (see FIG. 6) for operating a work machine such as a boom 14 and an accelerator operation unit for adjusting the output of the engine 42 are provided. 41 (see FIGS. 1 and 5).

  Further, the boom 14 is configured to be nested by a proximal boom 141, an intermediate boom 142, and a distal boom 143. By extending and retracting a hydraulically driven telescopic cylinder (not shown) housed inside, the entire boom 14 is provided. The length expands and contracts.

  The base boom 141 is rotatably attached to a support shaft whose base is horizontally installed on the bracket 13. In addition, since a hydraulically driven hoisting cylinder 15 is stretched between the bracket 13 and the base end boom 141, the boom 14 as a whole is raised and lowered by extending and retracting the hoisting cylinder 15.

  Furthermore, a rotatable sheave (not shown) is attached to the tip of the tip boom 143, and a wire 16 having a hook 17 attached to the tip is wound around the sheave.

  On the other hand, the end of the wire 16 is wound around the winch 18, and the hook 17 moves up and down by feeding or winding the wire 16 by rotating the winch 18 in the forward and reverse directions.

  In addition, the swivel base 12, the boom 14, and the winch 18 as the work machines are driven by hydraulic pressure generated by a hydraulic pump 44 that is rotationally driven by a PTO (Power Take Off) 43 connected to the engine 42 ( (See FIG. 1).

  Moreover, although not shown in figure, the attitude | position detector 51 is attached to the turntable 12, the boom 14, and the winch 18 for a safety device (refer FIG. 3). The posture detector 51 includes a boom length detector, a boom undulation angle detector, a boom turning angle detector, and a winch rotation number detector.

  And the rough terrain crane 1 of a present Example is provided with the operation instruction apparatus 2 which instruct | indicates the operation content with respect to the operator of a working machine (refer FIG. 1).

[Control system configuration]
Next, the configuration of the control system of the operation instruction device 2 of the present embodiment will be described.

As shown in FIG. 1, the operation instruction device 2 of the present embodiment artificially determines a swivel base 12, a boom 14, a winch 18 as a working machine driven by hydraulic pressure, and a supply oil amount Q _s supplied to the working machine. a supply means 4 for decreasing the operation, the drive oil amount calculation means 5 for calculating a driving amount of oil Q _d which is used to drive a working machine, supplying oil to calculate the oil supply amount Q _s to be supplied to the working machine An amount calculating means 6; a determining means 7 for determining the magnitude of the supply oil amount Q _s and the driving oil amount Q _d ; an instruction means 8 for instructing an operator to perform an energy saving operation based on the determination of the determining means 7; It has.

The swivel base 12, boom 14, and winch 18 as work implements are supplied oil amount Q _s that is increased or decreased based on the operation amount of the accelerator operation unit 41 of the supply means 4, and the operation of the operation lever 55 (see FIG. 6). Varying the speed of movement based on both quantity. Here, the working machine of the present invention means a machine used for work and is a concept including a hydraulic pump 44 and hydraulic actuators.

  Further, the supply means 4 takes out an accelerator operation unit 41 that is operated by an operator by manual operation (depression), an engine 42 that changes in rotation speed according to the depression amount of the accelerator operation unit 41, and rotational power of the engine 42. A PTO (Power Take Off) 43 and a constant displacement hydraulic pump 44 that is rotationally driven by the PTO 43 are provided.

Therefore, the amount of oil supplied to the entire hydraulic circuit by the hydraulic pump 44 is changed according to the depression amount of the accelerator operating unit 41, also varied supply oil amount Q _s to be supplied to the working machine accordingly.

Furthermore, as shown in FIG. 3, the drive oil amount calculation means 5 of the present embodiment includes an attitude detector 51 that detects the attitude of the work implement, an operating speed calculator 52 that calculates the operating speed based on the attitude, a storage unit 53 for storing the structural information of the working machine, and includes an oil amount calculating section 54 for calculating a driving amount of oil Q _d, a.

  As described above, the posture detector 51 is installed for a safety device, and includes a boom length detector, a boom undulation angle detector, a boom turning angle detector, and a winch rotation number detector. The detected boom length L, boom undulation angle θ1, boom turning angle θ2, and winch rotation speed N are transmitted to the operation speed calculation unit 52.

  In addition, the operating speed calculation unit 52 determines the boom expansion / contraction speed VL, the boom hoisting angular speed ω1, and the boom hoisting angular speed ω1, based on the time variations of the transmitted boom length L, boom hoisting angle θ1, boom turning angle θ2, and winch rotation speed N The boom turning angular velocity ω <b> 2 and the winch rotation velocity Vn are calculated and transmitted to the oil amount calculation unit 54.

  Furthermore, the storage unit 53 is a storage device that stores the construction machine structure information, and stores the expansion cylinder cross-sectional area, the undulation cylinder cross-sectional area, the coordinates of each member, the volume of the hydraulic motor, the efficiency, the reduction ratio, and the like.

Then, the oil amount calculating section 54 calculates a driving amount of oil Q _d based on the structure information of each operating speed and the working machine. Here, the driving oil amount Q _d in the present invention, mean oil amount that is actually used to drive the working machine, taking into account dynamics of the cylinder, circuit resistance, and internal leakage or the like of the hydraulic motor Is done.

As shown in FIG. 4, the supply oil amount calculation means 6 of the present embodiment includes an engine speed calculation means 61 that calculates the engine speed Eng, a storage unit 62 that stores structure information of the work implement, and a supply an oil amount calculating section 63 for calculating the amount of oil Q _s, and a.

  This engine speed calculation means 61 obtains the accelerator opening δ from the accelerator operation unit 41 that operates the engine 42, calculates the engine speed Eng based on the accelerator opening δ, and transmits it to the oil amount calculation unit 63. To do.

  The storage unit 62 is a storage device that stores the structure information of the work implement, and stores the volume, efficiency, reduction ratio, and the like of the hydraulic pump 44.

Further, the oil amount calculation unit 63 calculates the supply oil amount Q _s based on the engine speed Eng and the construction machine structure information. Here, the supply oil amount Q _s in the present invention means the amount of oil actually supplied to the work machine, and the pressure in the circuit, the pressure-flow rate characteristic of the hydraulic pump 44, and the like are also taken into consideration.

The determination unit 7 of this embodiment determines a feed oil amount Q _s to be supplied to the working machine, the drive oil amount Q _d which is used to drive a working machine, large and small. That is, the determination unit 7, or the supply oil amount Q _s is less insufficiency from the driving oil flow Q _d, or energy saving state in which the supply oil amount Q _s is within the predetermined range α exceeds the driving oil amount Q _d, supply oil It is determined whether the amount Q _s is in an excessive state exceeding the maximum value of the predetermined range α. Here, the predetermined range α is a constant set in advance to define the range of the energy saving state, and is set by experiment in consideration of the amount of hydraulic oil returning to the tank.

  The drive oil amount calculation means 5, the supply oil amount calculation means 6, and the determination means 7 described above are executed as a control block of a controller that is a general-purpose microcomputer having a CPU, memory, HDD, SSD, or the like.

  Furthermore, the instruction means 8 of the present embodiment instructs the operator to perform an energy saving operation of the accelerator operation unit 41 based on the determination of the determination means 7, and is disposed in the cockpit 12a.

  Here, the energy-saving operation is an artificial operation of the accelerator operation unit 41 of the supply means 4, and reduces or maintains the amount of hydraulic oil that is returned to the tank without being used by the work machine. It shall be the operation of supplying sufficient hydraulic oil for the operation of the aircraft.

  Moreover, as the instruction means 8, a monitor for a safety device arranged in the cockpit 12a, a lamp that lights up, blinks, or goes off, a speaker that emits sound, and the like are used.

  Specifically, when a monitor is used as the instruction unit 8, if the determination unit 7 determines that the state is insufficiency, “Increased speed can be achieved by increasing the amount of supplied oil” is displayed, and the determination unit 7 saves energy. When the state is determined, “Efficient energy saving operation” is displayed. When the determination unit 7 determines that the state is excessive, “Relax the accelerator operation” is displayed.

[Action]
Next, the operation will be described.

(Driving oil amount Qd calculation action based on posture)
Operation instructing device 2 of this embodiment calculates the change in the attitude of the working machine, the structural information of the working machine, the drive oil amount Q _d based on. That is, the drive oil amount calculation means 5 calculates a change (operation speed) of the work implement based on the posture of the work implement detected by the posture detector 51 in the operation speed calculation unit 52, and the oil amount calculation unit 54 Based on the operating speed and the hydraulic cylinder cross-sectional area and the like stored in the storage unit 53, the drive oil amount _Qd is calculated inversely.

Here, the case where the drive oil amount _Qd is calculated based on the change in the attitude of the work implement has been described. However, the present invention is not limited to this. be previously stored relationship between), you can calculate the driving amount of oil Q _d based on the attitude of the working machine.

(Calculation of supply oil quantity Qs based on accelerator opening δ)
The operation instruction device 2 of the present embodiment calculates the supply oil amount Q _s based on the accelerator opening δ and the construction machine structure information. That is, the supply oil amount calculation means 6 calculates the engine rotation speed Eng based on the accelerator opening δ in the engine rotation speed calculation means 61, and is stored in the storage 62 in the oil amount calculation section 63 and the engine rotation speed Eng. The supply oil amount Q _s is calculated based on the structure information of the hydraulic pump 44.

(Automatic judgment action)
Operation instructing device 2 of this embodiment, the determination unit 7 presents the automatically determined to pilot the magnitude of the oil supply quantity Q _s and the drive oil amount Q _d. Therefore, the operator does not need to estimate the magnitude relationship, and can concentrate on the work.

(Energy saving action by instructions)
When the determination unit 7 determines that the supply oil amount Q _s exceeds the maximum value of the predetermined range α, the operation instruction device 2 of the present embodiment displays “no accelerator operation on the display monitor as the instruction unit 8. Please display "message.

  The operator who has seen this recognizes that it is in an excessive state, and can reduce the amount of hydraulic oil that returns to the tank without being used by the work implement by reducing the amount of depression of the accelerator operation unit 41. .

(Increase speed by instruction)
In contrast to the case where the supply oil amount Q _s exceeds the maximum value of the predetermined range α, when the determination unit 7 determines that the supply oil amount Q _s is less than the drive oil amount Q _d , the instruction unit 8 Displays the message “Speed can be increased by increasing the amount of oil supplied”.

Operator who viewed this recognizes that it is possible accelerated, if it is necessary to increase speed by increasing the amount of depression of the accelerator operating unit 41, the feed oil amount Q _s and the drive oil amount Q _d It is possible to increase the moving speed of the work machine. If it is not necessary to increase the speed, the work can be continued while the amount of depression of the accelerator operation unit 41 is maintained.

(Energy-saving state maintenance action by instructions)
Further, when the oil supply amount Q _s in the determination unit 7 is determined to energy saving state is within a predetermined range α exceeds the driving oil amount Q _d, "is an efficient energy saving operation" on the display monitor as an indicator means 8 Is displayed.

  The driver who has seen this recognizes that it is in the energy saving state and knows that the speed cannot be increased any more, so the operation is continued while maintaining the amount of depression of the accelerator operation unit 41.

(For fine operation of work equipment by artificial accelerator operation)
Through all the above states, the operator adjusts the engine speed Eng by operating the accelerator operation unit 41 by artificially increasing / decreasing the depression amount, not by the automatic control by the controller. For this reason, the engine speed Eng does not change unintentionally during work, and the work implement can be operated as intended.

[effect]
Next, the effect will be described.

(1) Thus, the operation instructing device 2 of this embodiment, the swivel base 12 as working machine of a hydraulic drive, the boom 14, a winch 18, a supply means 4 for increasing or decreasing the supply amount of oil Q _s in manual operation , Determination means 7 for determining the magnitude of the supply oil amount Q _s supplied to the work implement and the drive oil amount Q _d used for driving the work implement, and an operation for the operator based on the determination of the determination means 7 And instruction means 8 for instructing the contents.

For this reason, the supply oil amount Q _s exceeds the drive oil amount Q _d , and the energy saving operation is performed by instructing the operator that the operating speed of the work implement does not increase even if the supply oil amount Q _s is increased. Can be urged.

  In particular, in the case of cranes such as the 60-t class rough terrain crane 1 and all terrain crane, even if the operating lever is tilted to the maximum, the movement speed of the boom 14 is felt slow, and the accelerator is often depressed to the maximum. The effect of instructing the operation is great.

Furthermore, operator is to increase or decrease the artificially supplied oil amount Q _s according to the instructions, without even prevent he wanted operations are adjusted automatically supply oil amount Q _s, easily operated.

In other words, by not adopting automatic control, the operator can adjust the engine speed Eng and increase or decrease the supply oil amount Q _s as intended according to the instruction, so the supply oil amount Q _s is automatically increased or decreased. You won't be able to do what you want.

  In addition, since automatic control is not employed, devices such as an engine speed control means and a variable displacement hydraulic pump control device are not required, and the overall configuration can be simplified to reduce costs.

(2) In addition, the instruction means 8 instructs the energy saving state when the determination means 7 determines that the supply oil amount Q _s exceeds the drive oil amount Q _d and is within the predetermined range α, When the determination means 7 determines that the supply oil amount Q _s exceeds the predetermined range α, an instruction to reduce the supply oil amount Q _s is given.

For this reason, when the supply oil amount Q _s exceeds the drive oil amount Q _d and is within the predetermined range α, the operator recognizes that it is in an energy saving state, and knows that the speed cannot be further increased. The operation can be continued while the amount of depression of the operation unit 41 is maintained.

On the other hand, when the supply oil amount Q _s exceeds the predetermined range α, the operator recognizes that it is in an excessive state and reduces the stepping amount of the accelerator operation unit 41 to return to the tank without being used. The amount of oil can be reduced.

In addition, when the supply oil amount Q _s is smaller than the drive oil amount Q _d , the operator recognizes that the speed can be increased, and if it is necessary to increase the speed, the stepping amount of the accelerator operation unit 41 is increased. Thus, the moving speed of the work machine can be increased. If it is not necessary to increase the speed, the operation can be continued while the amount of depression of the accelerator operation unit 41 is maintained.

(3) Further, the actual amount of drive oil Q _d used for driving the work implement is calculated based on the attitude of the work implement or the change in the posture of the work implement and the structure information of the work implement. based on the attitude of the working machine can determine the magnitude relationship between the accurately calculates the driving amount of oil Q _d supplied oil amount Q _s.

That is, the driving oil amount Q _d is to be calculated based on the actual travel speed of the working machine, it is possible to very accurately calculate the driving amount of oil Q _d to be actually used for driving the working machine.

  (4) And the rough terrain crane 1 as a work vehicle of a present Example becomes an environment-friendly work vehicle with little energy consumption by providing one of the operation instruction devices 2 described above.

  Hereinafter, a rough terrain crane 1 as a work vehicle including another operation instruction device 2A different from the above-described embodiment will be described with reference to FIGS. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

[Mechanical structure]
Since the rough terrain crane 1 provided with the operation instruction device 2A of the present embodiment has the same mechanical configuration as that of the first embodiment, the description thereof is omitted.

[Control system configuration]
Next, the configuration of the control system of the operation instruction device 2A of the present embodiment will be described.

  The operation instruction device 2A of the present embodiment is different from the first embodiment (see FIG. 1) in that it has an electric pump 45 and calculates the drive oil amount Qd based on the operation amount LV of the operation lever. Yes.

  That is, as shown in FIG. 5, the operation instruction device 2A includes a swivel base 12, a boom 14 and a winch 18, a supply unit 4A, a drive oil amount calculation unit 5A, a supply oil amount calculation unit 6A, and a determination unit 7. And instruction means 8. Among these, the supply means 4A, the drive oil amount calculation means 5A, and the supply oil amount calculation means 6A are different from the first embodiment.

  The supply means 4A of the present embodiment includes an accelerator operation unit 41 that is operated by an operator by manual operation (depression), and an electric pump 45 that is instructed to rotate the motor rotation number rot according to the depression amount of the accelerator operation unit 41. I have.

  The electric pump 45 is a hydraulic pump driven by an electric motor, and is controlled by PWM control when a DC motor is used, and is controlled by inverter control when an AC motor is used. In any control, the value of the motor rotation speed rot is directly instructed by an operator's manual operation.

Further, as shown in FIG. 6, the drive oil amount calculation means 5 </ b> A of the present embodiment calculates a speed command V that calculates a speed command V based on an operation lever 55 that operates the work implement and an operation amount LV of the operation lever 55. and parts 56, a storage unit 53 for storing the structural information of the working machine, an oil amount calculating section 54 for calculating a driving amount of oil Q _d, a.

  The operation lever 55 is used by the operator to operate the work implement by tilting in either direction, and the operation amount LV (either positive or negative value) detected by the potentiometer is transmitted to the speed command calculation unit 56. The

  The speed command calculation unit 56 calculates the actual work machine speed command V in accordance with the transmitted value of the operation amount LV, transmits it to the control valve that controls the work machine, and sends it to the oil amount calculation unit 54. To transmit.

Then, the oil amount calculating section 54 calculates a driving amount of oil Q _d based on the structural information of the transmission velocity command V and the working machine.

Furthermore, oil supply amount calculating means 6A of the present embodiment, as shown in FIG. 7, a storage unit 62 for storing the structural information of the working machine, an oil amount calculating section 63 for calculating the feed oil amount Q _s, the I have.

The oil amount calculation unit 63 calculates the supply oil amount Q _s based on the motor rotation number rot and the construction machine structure information. That is, the oil amount calculation unit 63 acquires the motor rotation number rot of the electric pump 45 directly from the accelerator operation unit 41.

[Action]
Next, the operation will be described.

(Driving oil amount Qd calculation action based on operation amount LV)
Operation instructing device 2 of this embodiment calculates the operation amount and LV of the operating lever 55, the structural information of the working machine, the drive oil amount Q _d based on. That is, the drive oil amount calculation means 5 calculates the speed command V of the work implement based on the operation amount LV of the operation lever 55 in the speed command calculation unit 56, and stores the speed command V and the storage unit 53 in the oil amount calculation unit 54. The drive oil amount _Qd is calculated based on the stored hydraulic cylinder cross-sectional area and the like.

(Supply oil quantity Qs calculation action based on motor rotation speed rot)
The operation instruction apparatus 2 according to the present embodiment calculates the supply oil amount Q _s based on the motor rotation number rot and the construction machine structure information. That is, the supply oil amount calculation means 6 acquires the motor rotation number rot of the electric pump 45 directly from the accelerator operation unit 41, and the oil amount calculation unit 63 stores the motor rotation number rot and the electric pump 45 stored in the storage unit 62. The supply oil amount Q _s is calculated on the basis of the structure information.

[effect]
Next, the effect will be described.

(1) Thus, the operation instructing device 2A of the embodiment, the driving oil amount Q _d to be used to drive a working machine, the operating amount LV of the operating lever 55 as an operating means for operating the work machine can be determined and structural information of the working machine, the basis that is calculated, the magnitude by calculating the driving amount of oil Q _d based on the operator's intention is reflected in the operation amount LV.

In addition, operation instructing device 2A of the present embodiment, oil supply amount Qs computes the motor rotation speed rot of the electric pump 45, and the structural information of the working machine, the oil supply amount Q _s on the basis of. That is, the supply oil amount calculation means 6 directly obtains the motor rotation number rot from the accelerator operation unit 41, so that the supply oil amount Q _s can be calculated more accurately.

  In addition, since it is as substantially the same as the said Example about another structure and an effect, description is abbreviate | omitted.

  The embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to the present invention. included.

  For example, in the first embodiment, the drive oil amount calculating unit 5 calculates the drive oil amount Qd based on the attitude (or change in attitude) of the work implement, and the supply oil amount calculating unit 6 is based on the engine speed Eng. In the second embodiment, the drive oil amount calculation unit 5 calculates the drive oil amount Qd based on the operation amount LV of the operation lever 55 and the supply oil amount calculation unit. Although the case where 6 calculates the supply oil amount Qs based on the motor rotation number rot has been described, the present invention is not limited to this combination, and may be another combination.

δ Accelerator opening Eng Engine speed rot Motor speed Q _d Drive oil amount Q _s Supply oil amount α Predetermined range 1 Rough terrain crane (work vehicle)
12 swivel (work machine)
14 Boom (work machine)
18 winch (work machine)
2, 2A operation instruction device 4, 4A supply means 41 accelerator operation unit 42 engine 43 PTO
44 Hydraulic pump 45 Electric pump 5, 5A Drive oil amount calculation means 51 Attitude detector 52 Operating speed calculation section 53 Storage section 54 Oil amount calculation section 55 Operation lever 56 Speed command calculation sections 6 and 6A Supply oil amount calculation means 61 Engine rotation Number calculation means 62 Storage section 63 Oil amount calculation section 7 Determination means 8 Instruction means

Claims (4)

An operation instructing device for instructing the operation content to the operator of the work machine,
A working machine driven by hydraulic pressure;
Supply means for increasing or decreasing the amount of oil actually supplied to the working machine by human operation;
And the supply amount of oil actually supplied to the working machine, a determination unit and a driving amount of oil actually used to drive the working machine, the magnitude of,
Instruction means for instructing the operator to perform an energy saving operation based on the determination of the determination means ,
The driving oil amount is a change in the orientation of the orientation or the working machine of the working machine, the structural information of the working machine, the operation instructing device characterized that you calculated based on. An operation instructing device for instructing the operation content to the operator of the work machine,
A working machine driven by hydraulic pressure;
Supply means for increasing or decreasing the amount of oil actually supplied to the working machine by human operation;
A determination means for determining the magnitude of the amount of oil actually supplied to the work implement and the amount of drive oil actually used to drive the work implement;
Instruction means for instructing the operator to perform an energy saving operation based on the determination of the determination means,
The operation instruction apparatus is characterized in that the drive oil amount is calculated based on an operation amount of an operating means for operating the work implement and structure information of the work implement. The instructing means instructs the energy saving state when the determining means determines that the supplied oil amount exceeds the driving oil amount and is within a predetermined range.
Operation instruction device according to claim 1 or claim 2 wherein when the oil supply amount is determined to exceed the predetermined range, characterized by instructing a decrease operation of the oil supply amount in the determination means. A work vehicle comprising the operation instruction device according to any one of claims 1 to 3 .

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