JP5869260B2 - Working machine - Google Patents

Description

  The present invention relates to a working machine having an idling stop function in order to save fuel, reduce noise, reduce exhaust gas, and the like.

  Patent Document 1 discloses a work machine capable of automatically powering off (idling stop) an engine of a transmitter and a work machine body.

JP 2007-230696 A

  However, in the technique described in Patent Document 1, idling is stopped if there is no operation input for a certain period of time even during the work, and therefore an operation of re-driving the engine may be required. There was a problem that there was.

  This invention is made | formed in view of the said subject, and an example of the objective is to provide the working machine by which an idling stop function is exhibited in the middle of work, and an engine does not stop.

The working machine of the present invention includes an engine, a working unit for performing various operations, and an idling stop function for stopping the engine when there is no operation input for driving the working unit from a user for a certain period of time, anda oN or oFF can switch the PTO to drive the working unit, after the switch is turned on, until the state of the working portion is constant conditions, the idling stop function The fixed condition is that the outrigger jack-up operation has been completed or the over-winding state has been released.

  According to the present invention, it is possible to provide a working machine that exhibits an idling stop function in the middle of work and does not stop the engine.

It is explanatory drawing of the outline | summary of the working machine in embodiment of this invention. It is a block diagram explaining control of the working machine of this embodiment.

  FIG. 1 is an explanatory diagram outlining the working machine in the embodiment of the present invention.

Hereinafter, the first embodiment of the present invention will be described in detail with reference to FIG.
The work machine 1 includes a work machine main body 5 and a transmitter 3 for remotely operating the work machine main body 5.
In this embodiment, the work machine body 5 of the work machine 1 is a truck crane as shown in FIG. 1, but the track crane is merely an example of the work machine body 5 of the work machine 1. Specifically, the work machine body 5 may be an all terrain crane, a rough terrain crane, a loading truck crane, an aerial work vehicle, a tow truck, a vehicle transporter, or the like. In other words, the work machine main body 5 only needs to be a work machine capable of performing various operations, and may be mounted on the vehicle or may not be mounted on the vehicle.

As shown in FIG. 1, the work machine body 5 can be remotely operated by the transmitter 3. However, this remote operation is not necessarily wireless, and may be wired in some cases.
The work machine body 5 includes a crane 55 (working unit) and an outrigger 57.
The crane 55 includes a turning post 55a, a hoisting cylinder 55b, a plurality of stages of telescopic booms 55c, a hook 55e, and a wire rope 55d.
The direction in which the telescopic boom 55c extends is changed by turning the turning post 55a and the hoisting cylinder 55b. Further, by extending and retracting the hoisting cylinder 55b, the hoisting angle of the telescopic boom 55c is changed.
The plurality of telescopic booms 55c are expanded and contracted as required by an expansion cylinder (not shown) disposed therein.
A wire rope 55d hangs down from the end of the telescopic boom 55c on the distal end side. A hook 55e is suspended from the wire rope 55d.
A main body control device 51 for controlling the crane 55 and the outrigger 57 is provided. The outrigger 57 can at least perform a jacking operation.
The work machine body 5 includes an engine 529 (see also FIG. 2). The power of the engine 529 is supplied to work equipment such as the crane 55 and the outrigger 57. Further, a PTO switch 103 (see FIG. 2) is provided to switch the power of the engine 529 to work equipment such as the crane 55 and the outrigger 57.

  The main body control device 51 has a main body display unit. The main body display unit can display the state of the crane 55 and the outrigger 57 controlled by the main body control device 51. The main body display unit can also display various setting states.

The transmitter 3 has a grip portion 35.
The user grips the grip 35 and operates the transmitter switch 33 while confirming the display on the transmitter display 37 and / or the state of the work machine body 5.
In accordance with the input of the transmitter switch 33, the work machine body 5 performs various operations.
The transmitter 3 has a transmitter control device 31, and various controls are performed by the transmitter control device 31.

In the present embodiment, the work machine 1 also has an idling stop function that turns off the power of the engine 529 if no operation input is made to the transmitter switch 33 or the operation unit of the work machine body 5 for a certain period of time.
This idling stop function can stop the engine 529 when it is considered that the work is not performed, so that it is possible to improve fuel consumption, reduce exhaust gas, reduce noise, and the like. have.
However, when a work other than that performed by the work machine 1 is performed in the middle of the work (for example, work preparation before operating the work machine 1 and clean-up after the work), work other than the work machine 1 is performing. In addition, there may be a situation in which work input to the work machine 1 is not performed for a certain time.
Then, although the user does not intend, the engine 529 is stopped by the idling stop function.
As described above, when the engine 529 is stopped, the user has to restart the engine 529 and the operability is deteriorated (annoying).
However, even if the idling stop function is completely stopped, effects such as improvement of fuel consumption due to the idling stop function cannot be obtained.
Therefore, in the present embodiment, the idling stop function is limited when there is a high possibility that work other than that performed by the work implement 1 is being performed.
A specific example of a situation where there is a high possibility that work other than the work machine 1 is performed will be described later.

  FIG. 2 is a block diagram illustrating the control of the work machine 1 according to the present embodiment.

As shown in FIG. 2, the main body control device 51 of the work machine main body 5 includes a main body control unit 511, a main body communication unit 513, and a main body timer 525.
The main body control device 51 includes a speaker and a main body display unit.
The main body communication unit 513 transmits / receives necessary information to / from the transmitter communication unit by radio (radio waves, infrared rays, etc.).
The body timer 525 counts the timer and outputs the value to the body controller 511 as necessary.

The main body control unit 511 comprehensively controls the overall operation of the main body control device 51 of the work machine main body 5.
The main body control unit 511 also outputs a stop signal 51j for the engine 529 and an instruction signal for the start signal 51i for the engine 529 to the starter 527 that starts and stops the engine 529.
The main body control unit 511 also outputs an accelerator output 51k to the governor 531 that controls the rotational speed of the engine 529.
The main body control unit 511 receives the crane work posture input 51a from the crane work posture monitoring monitor. More specifically, an operation input related to the crane and the outrigger 57 and a work posture detection input are input to the crane work posture input 51a.
The main body control unit 511 receives an engine start input 51b from the user.
The main body control unit 511 receives an overwinding state input 51c as to whether or not the hook portion of the crane 55 is in the overwound state (a state in which the hook portion is completely accommodated).
Furthermore, the main body control unit 511 receives an outrigger operation input 51e as to whether or not the outrigger 57 is being operated.
The main body control unit 511 also receives an input of a neutral detection input 51f that detects whether the transmission state of the vehicle driven by the engine 529 is a neutral state.
Further, the main body control unit 511 also receives a PTO ON / OFF detection input 51g for detecting the state of the PTO switch 103 for switching the power of the engine 529 to work equipment such as the crane 55 and the outrigger 57.

Based on these various inputs and their history, the main body control unit 511 determines whether the work machine 1 is preparing for work, is working, or is being cleaned up after the work is finished.
When the main body control unit 511 determines that the work machine 1 is preparing for work, during work, or after the work is finished, the main body control unit 511 restricts the idling stop function from being exhibited.
The determination as to whether the work machine 1 is preparing for work, is working, or is being cleaned up after completion of work (hereinafter, these three states are referred to as “idling stop prohibited state”) is, for example, It is done by the method.
When the PTO switch 103 is in the ON state, the main body control unit 511 determines that the idling stop prohibition state is set, and the main body control unit 511 limits idling stop.
However, after the PTO switch 103 is turned ON, the main body control unit 511 releases the idling stop restriction when any one of the following three conditions is satisfied.
(1) When the outrigger 57 slides and then the jack-up operation is completed, the main body control unit 511 determines whether or not this condition is satisfied based on the outrigger operation input 51e.
If the outrigger 57 slides and then the jack-up operation is finished, the preparation before the cargo handling operation (installation of the outrigger 57) or the post-cleaning after the cargo handling operation (storage of the outrigger 57) is completed. This is because there are many cases.
(2) The overwind state is released Based on the overwind state input 51c, the main body control unit 511 determines whether this condition is satisfied.
This is because even when the overwinding state is released, preparation before the handling operation (installation of the outrigger 57) or clean-up after the loading operation (storage of the outrigger 57) is often completed.
(3) The fixed time has elapsed Based on the input from the main body timer 525, the main body control unit 511 satisfies this condition that the predetermined time has elapsed since the last operation input from the user was made. Judgment is made.
When no operation input is performed for a certain period, preparation before the handling operation (installation of the outrigger 57) or clean-up after the loading operation (storage of the outrigger 57) is often completed. It is.

  Needless to say, the working machine 1 may have only a determination means for one condition (or two conditions) of the above three conditions.

<Modification>
Based on these various inputs and their history, the main body control unit 511 determines whether the work machine 1 (crane 55) is preparing for work, is working, or is being cleaned up after the work is finished.
When the main body control unit 511 determines that the crane 55 is preparing for work, during work, or after the work is finished, the main body control unit 511 restricts the idling stop function from being exhibited.
For example, whether the crane 55 is preparing for work, is working, or is being cleaned up after completion of the work (hereinafter, these three states are referred to as “idling stop prohibited state”) is, for example, By the way.
When the storage operation of the crane 55 is performed, the main body control unit 511 determines that the idling stop is prohibited, and the main body control unit 511 limits idling stop.
However, after the storage operation of the crane 55 is performed, when any one of the following two conditions is satisfied, the main body control unit 511 releases the restriction of idling stop.
(1) The storing operation of the outrigger 57 has been completed Based on the outrigger operation input 51e, the main body control unit 511 determines whether this condition is satisfied.
This is because when the storage operation of the outrigger 57 has been completed, the preparation before the cargo handling operation (installation of the outrigger 57) or the post-cleaning after the cargo handling operation (storage of the outrigger 57) is often completed. .
(2) A certain time has passed Based on the input from the body timer 525, the body control unit 511 satisfies this condition that a certain time has passed since the last operation input from the user was made. Judgment is made.
When no operation input is performed for a certain period, preparation before the handling operation (installation of the outrigger 57) or clean-up after the loading operation (storage of the outrigger 57) is often completed. It is.

  Needless to say, the working machine 1 may include only determination means for one of the above two conditions.

  Needless to say, only the control in the embodiment or only the control in this modification may be performed, or both controls may be performed in a superimposed manner.

<Configuration and Effect of Embodiment (Modification)>
The work machine 1 includes an engine 529 and a working unit (for example, a crane 55) for performing various operations, and the engine is operated when there is no operation input for driving the working unit from a user for a certain period of time. It has an idling stop function for stopping, and the idling stop function is limited by the state of the working unit.
Since it has such a configuration, it is possible to prevent the idling stop function from being exhibited during work in the working unit and the user's operability from deteriorating.

A PTO switch 103 that can turn on or off the PTO for driving the working unit. After the PTO switch 103 is turned on, the idling stop function is maintained until the working unit is in a certain condition. Limit functioning.
Since it has such a configuration, there is a high possibility that the user will perform an operation after the PTO switch 103 is turned on. In this case, it is possible to limit the idling stop.

The certain condition is that the outrigger is slid and then the jack-up operation is finished, the over-winding state is released, or a certain time has elapsed.
Since it has such a structure, it becomes possible to exhibit an idling stop function when it is not generally working.

After the crane 55 has been hooked and the operation of retracting the hook of the crane 55 is performed, the function of the idling stop function is restricted until the working unit is in a certain condition.
Since it has such a configuration, there is a high possibility that the user will be further operated after the crane 55 is operated. In this case, it is possible to limit the idling stop. .

The certain condition is that the jack storing operation has been completed and that a certain time has elapsed.
Since it has such a structure, it becomes possible to exhibit an idling stop function when it is not generally working.

<Definition etc.>
A load-type truck crane is an example of a work machine body in the present invention. In other words, the work machine main body is a work machine main body capable of performing various operations such as an all terrain crane, a rough terrain crane, a truck crane, a cargo crane, an aerial work vehicle, a tow truck, a vehicle transporter, and the like. It may be that which is not mounted on the car.
The crane 55 is an example of a working unit in the present invention. In other words, the working unit may be any part as long as it can perform various operations performed by the work machine 1.

DESCRIPTION OF SYMBOLS 1 Work machine 5 Work machine main body 55 Crane 57 Outrigger 103 PTO switch 511 Main body control part 513 Main body communication part 525 Main body timer 529 Engine

Claims (1)

Engine,
A working section for performing various operations;
An idling stop function for stopping the engine when there is no operation input for driving the working unit from a user for a certain period of time;
A switch capable of turning on or off the PTO for driving the working unit,
After the switch is turned on, until the state of the working portion is constant conditions, limits that the idling stop function to function,
The certain condition is that the jack-up operation of the outrigger has been completed or that the overwinding state has been released.

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