JPH07323779A - Working vehicle - Google Patents

Abstract

PURPOSE:To simplify the structure of the whole device (system) by storing the compressed air produced by an air pump to bc driven by the engine, and driving an air motor with the high pressure air to operate a working device. CONSTITUTION:In a mobile vehicle where en engine 6 is mounted on a chassis frame 81 provided on wheels 8, 8' or a crawler belt, and a steering device 7 is provided, an air pump 2 to be driven by the engine 6 is provided, and the compressed air produced is stored in an air tank 3. A working device 1 is driven by the high pressure air from this air tank 3. The working device 1 is provided with an air motor consisting of an air turbine to be driven with the high pressure air car the like, car an actuator consisting of an air cylinder or the like, and constituted as a pruning-off device car a grass-cutting device provided with a rotary disk type saw which is mounted can a tree climbing robot car the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle equipped with work equipment used for various works such as forestry work, orchard work, and marine product collection work.
These various working devices are of a self-propelled type that uses an air motor driven system that is driven by compressed air (high pressure air) generated by an air pump, and is equipped with working devices that are driven by the air motor. It relates to a work vehicle.

[0002]

2. Description of the Related Art A conventional working device (working equipment) for performing forestry work is equipped with an engine composed of a small internal combustion engine of its own, and the power of the engine is used to climb trees, for example. In most cases, a cutter or a saw is operated by the power from the engine to perform various works.

[0003]

By the way, in the above-mentioned prior art, since the working equipment itself has its own engine, the working equipment (working equipment) itself becomes large-scale. However, there is a problem that the weight (mass) becomes heavy. Further, if a hydraulic device or a hydraulic device is used as a power source, the entire device (system) must be a closed loop system (closed type), which inevitably results in a large-scale device. There is. In order to solve such a problem, the engine and the air pump are provided separately from the work equipment, and the compressed air (high pressure air) generated by the air pump is used as the work equipment (work device).
To drive the work device,
Atmospheric open type work device (work equipment)
It is an object (problem) of the present invention to provide a work vehicle including the above.

[0004]

In order to solve the above-mentioned problems, the following measures are taken in the present invention. That is, regarding a self-propelled work vehicle capable of self-propelled to a work site with various work devices (work equipment) used for forestry work, orchard work, etc. mounted, an engine for running the vehicle is provided. An air turbine driven by the output from the air turbine, an air tank for storing compressed air (high pressure air) generated by the air pump, and an air turbine driven by high pressure air from the air tank. It has been decided to adopt a configuration including an air motor composed of the above, and a working device that operates using the air motor as a power source.

Further, regarding a self-propelled work vehicle capable of self-propelled to a work site with various work devices (work equipment) used for forestry work, orchard work, etc. mounted, The engine mainly includes an engine (auxiliary engine) different from the running engine, an air pump driven by the auxiliary engine, and an air motor driven by compressed air generated by the air pump. A working device that operates using an air motor as a power source is adopted.

[0006]

By adopting the above construction, the following effects are exhibited in the present invention. First, an operator or the like drives a self-propelled vehicle driven by an engine (main engine) 6 for traveling the vehicle as shown in FIG. 1, in which a work device 1 is mounted. By
Go to the desired work site. Then, when the target work site is reached, in the apparatus according to claim 1, the air pump 2 driven by the power from the main engine 6 via the power take-off device (PTO) 9 or the like is operated to compress the high pressure. Generates air (high pressure air). This high-pressure air is stored in the air tank 3, which is a storage tank, and set to a predetermined pressure.

In such a state, the work device 1 mounted on the work vehicle is lowered and moved to a predetermined work site. In this case, since the connection hose 5 and the like are provided between the air tank 3 and the work device (work device) 1, the work device 1 is installed at the work site by expanding the connection hose 5 and the like. Moved to
Will be installed.

When the work at the work site is pruning work as shown in FIG. 3, for example, the pruning work apparatus 1 is attached to the tree climbing robot 99 and installed at a predetermined position. By the way, valve 3 at hand
The pruning work device 1 is operated by opening 1 (see FIG. 1) or the like. In this case, the tree climbing robot 99 can be driven by the compressed air from the air tank 3. The pruning work device 1 is composed of, for example, a rotary cutter driven by an air turbine or the like, and is driven by compressed air (high pressure air) from the air tank 3. The operation of the pruning work apparatus 1 is controlled by a remote operator by a remote operation. This ensures the safety of the worker.

When the work is a lower cutting work as shown in FIG. 4, the working device 1 is operated by an operator's operation. In this case, for example,
By operating the control unit 12 of the work apparatus 1 or the like, the high-pressure air supplied through the connection hose 5 drives the air motor 11 including an air turbine and the like, whereby the rotary cutter 19 and the like operate. As a result, weeding work of undergrowth and the like will be performed.

According to the second aspect of the invention, the worker drives the work vehicle as shown in FIG. 8 to reach the intended work site. Then, when the target work site is reached, the working apparatus 1 is unloaded from the working vehicle and installed (set) in a predetermined working state. That is, for example, in the case of pruning work by the tree climbing robot 99 or the like as shown in FIG. 9, the pruning work apparatus 1 is attached to the tree climbing robot 99, and the purpose of the tree climbing robot 99 is as described above. Install on a tree. In such a state, the air pump 2 mounted on the work vehicle as shown in FIG. 9 is operated. Thereby, the air pump 2
Compressed air (high pressure air) from the above is sent to the working apparatus 1 and a predetermined work such as pruning work is performed. In particular, in the present invention, since the engine (auxiliary engine) 66 for operating the work device 1 and the tree climbing robot 99 is not provided in the work device 1, the mass of the work device 1 and the like is large. Therefore, the mounting work (setting) of these working devices 1 and the like can be carried out more smoothly than in the conventional work.

As described above, in the present invention, a series of work is performed by operating the air pump 2 mounted on the work vehicle, as shown in FIGS. 1, 2, 8, and 9. There is something. That is, high-pressure air is generated by the air pump 2, the high-pressure air is introduced into an air motor 11 composed of an air turbine, etc., the air motor 11 is driven by this, and a predetermined work device (work equipment) 1 is operated. I am going to let you do it. That is, in the present invention, the working device 1 and the working device 1
The high-pressure air from the air pump 2 mounted on the work vehicle is used to drive the tree climbing robot 99 or the like equipped with the. Different from what is installed. Therefore, by reducing the mass of the working device 1 as a whole, it is easy to carry and set the working device 1. Further, the work device 1 can be freed from the trouble that the work device 1 gets stuck due to running out of fuel in the engine or the like.

Further, in the present invention, the air harmless to the natural world is adopted as the power transmission means, and the air (air) after the air motor 11 is actuated can be opened to the atmosphere as it is, It does not do any harm to the natural world. Therefore, this device (system) can be a so-called open type that directly opens the medium of energy transmission to the natural world.
The entire structure can be simplified.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS.
It will be explained based on. A first embodiment (first embodiment), which is a basic embodiment of the present invention, will be described with reference to FIGS. 1 to 5. As shown in FIGS. 1 and 2, the structure of the present embodiment is such that an engine (main engine) including a chassis frame 81 installed on wheels or infinite tracks 8 and 8 ', an internal combustion engine mounted on the chassis frame 81, and the like. Generated by the air pump 2 driven by an output from the engine (main engine) 6, based on a self-propelled vehicle including an engine 6 and a steering device 7 including steering wheels and the like. It is basically provided with an air tank 3 for storing compressed air (high pressure air) and various working devices 1 driven by the high pressure air from the air tank 3.

In such a basic structure, the air pump 2 for generating high-pressure air is composed of a compressor or the like and is of a type directly driven by the engine (main engine) 6 or, as shown in FIG. It is of a type driven through a take-off device (PTO) 9 or the like. Compressed air (high pressure air) generated by the air pump (compressor) 2 having such a configuration passes through the valve 21 and the air tank 3
It is supposed to be stored in. This air tank 3
It is composed of a cylinder or the like that can withstand a high internal pressure. Further, the air tank 3 is provided with a valve 31, and a connection hose (air hose) 5 for guiding high-pressure air from the air tank 3 to the working apparatus (working equipment) 1 through the valve 31 is provided. ing.

The connecting hose 5 is designed to have a sufficient length in consideration of the long distance between the working device 1 and the air tank 3 at the work site. A winding device 4 for winding the connection hose (air hose) 5 having a sufficient length is provided as shown in FIGS. 1 and 2. A working device (working device) 1 is connected to a tip end portion of the connection hose 5 via a joint device 18, and in a state where the various working devices 1 are connected or separated from each other. It is designed to be installed in this work vehicle.

As shown in FIG. 5, the working device 1 connected to the connecting hose 5 is based on an air motor 11 composed of an air turbine or the like driven by high-pressure air, or an actuator composed of an air cylinder or the like. Is formed as. Then, the power taken out by the air motor 11 or the actuator is transmitted to the operating portion including the cutter 19 through the speed reducing mechanism 13 including the planetary gear device or the like or the link mechanism including the lever and the like. It is what That is,
By the power (output) of the air motor 11, for example,
A rotary disk-shaped saw, a cutter 19, or the like is driven. As described above, the working apparatus 1 according to the present embodiment is rotationally driven by the energy of high-pressure air, and unlike a conventional chainsaw or the like, it does not generate abnormal vibration or the like. Therefore, there is no physical abnormality to the operator due to vibration,
Excellent in working environment.

The operation mode and the like of this embodiment having the above-mentioned structure will be described. First, a self-propelled vehicle driven by an engine (main engine) 6 as shown in FIG. 1, in which a worker or the like drives a work vehicle in which the work device 1 is mounted, the target work is performed. Go to the scene. Then, when arriving at the intended work site, the engine (main engine) is passed through the power take-off device (PTO) 9 or the like.
The air pump 2 driven by the output from 6 is operated to generate high-pressure compressed air (high-pressure air). This high-pressure air is stored in the air tank 3, which is a storage tank,
It is set to a predetermined pressure.

In such a state, the work device 1 mounted on the work vehicle is lowered and moved to a predetermined work site. In this case, since the connection hose 5 and the like are provided between the air tank 3 and the working device (working device) 1, the working device (working device) 1 is unfolded by unfolding the connection hose 5. Is moved to the work site and installed in place.

If the work at the work site is pruning work as shown in FIG. 3, for example, the pruning work device 1 is attached to the tree climbing robot 99 or the like and installed at a predetermined position. The pruning work device 1 is operated by opening the valve 31 (see FIG. 1) at hand. In this case, the tree climbing robot 99 also
It can be driven by high pressure air from the air tank 3. And this pruning work device 1
Is composed of, for example, a rotary cutter 19 driven by an air turbine or the like, or a branching cutter driven by an air cylinder, and is driven by compressed air (high pressure air) from the air tank 3. The operation of the pruning work apparatus 1 is controlled by a remote operator by a remote operation. This ensures the safety of the worker. Further, when the work is related to the marine product collection work as shown in FIG. 10, the winch 191 driven by the air motor 11 is actuated to carry out the net winding work.

When the work is a lower cutting work as shown in FIG. 4, the working device 1 is operated by an operator. In this case, by operating the control unit 12 of the work device 1 or the like, the high-pressure air supplied through the connection hose 5 drives the air motor 11 including an air turbine or the like, thereby operating the rotary cutter 19 or the like. It will be. As a result, undergrowth work such as undergrowth is performed.
Also, if the work is related to spraying pesticides,
For example, as shown in FIG. 11, an operator holds the work device 1 and operates the control unit 12, for example.
In addition, the working device 1 in this case is equipped with an ejector mechanism or the like in which negative pressure is generated by injection of high-pressure air.

These series of operations are carried out by operating the air pump 2 mounted on the work vehicle as shown in FIGS. That is, high-pressure air is generated by the air pump 2, the high-pressure air is introduced into an air motor 11 composed of an air turbine, etc., the air motor 11 is driven by this, and a predetermined work device (work equipment) 1 is operated. This is done by As described above, in the present embodiment, since the working device 1 itself is not provided with its own engine and fuel tank for operating the working device 1, the entire working device 1 is It will be lightly formed. In addition, air harmless to the natural world is adopted as the power transmission means, and the air (air) after the air motor 11 is actuated does not cause any damage to the natural world even if it is directly opened to the atmosphere. not. Therefore,
This device (system) can be a so-called open type in which the medium for energy transmission is directly opened to the natural world, and the structure of the entire device (system) can be simplified.

A second embodiment (second embodiment) of the present invention will be described with reference to FIG. The present embodiment is also basically the same as the above-mentioned first embodiment. What is different is that, as shown in FIG. 6, the air tank 3, the working device 1 and the like are mounted on a trailer 91 different from the vehicle body. By adopting such a configuration, the capacity of the air tank 3 can be increased, and a plurality of devices can be mounted on the working device 1 as well. Further, the main air tank 3 is mounted on the vehicle body side, while the auxiliary tank or the like is mounted on the trailer 91 side, whereby the storage capacity of high-pressure air can be dramatically increased. I am trying.
In addition, the air tank 3 and the working device 1 are connected to the trailer 9
By mounting it on the first side, a plurality of workers can be mounted on the vehicle body side, which allows the workers to be transported.

Next, a third embodiment (third embodiment) of the present invention will be described with reference to FIG. The configuration of this embodiment is basically the same as that of the first embodiment. A different point is that an operator cannot board the vehicle body. That is, the configuration of the present embodiment is of a hand tractor type in which a handle-like steering lever 71 is provided as shown in FIG. Therefore, when going to the target work site, it is necessary for the worker to operate the work vehicle by operating the steering lever 71. In this type, since the work vehicle itself is formed in a small size, the vehicle weight (vehicle mass) is also lightened, and the work device 1 can be moved to a narrow place or a steep slope. Therefore, it is suitable for work on slopes.

Next, a fourth embodiment (fourth embodiment) of the present invention will be described with reference to FIG. The present embodiment is also basically the same as the above-mentioned first to third embodiments. The difference is that an engine (auxiliary engine) 66 for driving the air pump 2 that generates compressed air (high pressure air) to be sent to the work device 1 is provided separately from the engine (main engine) 6 for running the work vehicle. It is provided. That is, the configuration of the present embodiment is such that the chassis frame 81 installed on the wheels or the infinite track 8, 8 ', the engine (main engine) 6 including the internal combustion engine mounted on the chassis frame 81, and the steering The auxiliary engine 66 is formed on the basis of a self-propelled vehicle including a steering device 7 including wheels and the like, and an auxiliary engine 66 provided separately from the main engine 6 for traveling the vehicle,
An air pump 2 driven by the auxiliary engine 66,
Compressed air (high pressure air) generated by the air pump 2
It is basically composed of a working device 1 driven by, and a connecting hose (air hose) 5 for supplying high-pressure air from the air pump 2 to the working device 1.

In such a basic structure, the air pump 2 is composed of a compressor or the like as in the case of the first embodiment. The compressed air (high pressure air) generated by the air pump 2 including the compressor is once collected in the air tank 3 as in the first to third embodiments, and further connected to the connection hose. 5 is supplied to the working device 1 or, in some cases, is not supplied via the air tank 3 but is directly supplied to the working device 1 via the connecting hose 5. The air tank 3 may be omitted in order to simplify and reduce the weight of the entire system. Further, in such a configuration, the working device (working device) 1 driven by the high-pressure air from the air pump 2 includes the air motor 11 including an air turbine or the air cylinder or the like, as in the case of the first embodiment. It is formed on the basis of the following actuators. Then, the power taken out by the air motor 11 or the actuator is supplied to the cutter 19 via the reduction mechanism 13 such as a planetary gear device or the link mechanism.
It is adapted to be transmitted to an actuating part made up of the like.

As described above, the working apparatus 1 of this embodiment is
Since the engine itself for directly driving the working device 1 is not provided on the device itself, the working device 1 is formed to be very light, so that the working device 1 can be carried and installed (setting) at the work site. Etc. will be carried out very easily and smoothly. Further, in the embodiment, by omitting the air tank,
It becomes possible to reduce the entire system.

Further, in the case of the present embodiment having such a structure, when the work is a pruning work as shown in FIG. 9, for example, the pruning work device 1 is installed on the tree climbing robot 99.
When it is installed in a predetermined position and installed at a predetermined position, the air motor 11 is operated by the high pressure air from the air pump 2 by operating an operating device (control device) or the like at hand. As a result, the cutter 19 and the like are activated to carry out a predetermined pruning operation. In addition, regarding the marine product collection work as shown in FIG. 10, the winch 191 driven by the high pressure air from the air pump 2 is operated. As a result, fishing net hoisting work will be performed. In horticultural work as shown in FIG. 11, pesticides stored in a predetermined storage device (tank) 95 or water or water is ejected through an ejector driven by injection of high-pressure air from the air pump 2. And so on.

[0028]

According to the present invention, a self-propelled work vehicle capable of self-propelled to a work site with various work devices (work equipment) used for forestry work and the like mounted on an engine An air turbine driven by the output from the air turbine, an air tank for storing compressed air (high pressure air) generated by the air pump, and an air turbine driven by high pressure air from the air tank. Since it was decided to adopt a configuration that has an air motor composed of etc. and a working device that operates using the air motor as a power source, it is possible to easily go to the work site with the working device mounted. . Further, since the air in the atmosphere is used as the energy transmission means for driving the working device, the entire device (system) can be an open type that is open to the atmosphere, which simplifies the structure of the working device. I was able to do it. Therefore, it is possible to reduce the size and weight of the working device, and further downsize the entire device (system),
It has become possible to reduce the weight. Also, since air, which is harmless to the natural world, is used as a medium for energy transmission, even if the system is an open type, it does not adversely affect the natural world or the worker, and a good working environment can be obtained. became.

Further, in the structure in which the auxiliary engine for driving the air pump is provided separately from the main engine, P for extracting power from the main engine is used.
Not only does TO become unnecessary, but it is better to provide an auxiliary engine specialized for driving the air pump, such as an engine that operates at a constant speed, so that the engine can be made smaller and lighter. I was able to do it. As a result, the fuel tank and the like for the auxiliary engine is also downsized, which in turn makes it possible to reduce the size and weight of the entire system.

[Brief description of drawings]

FIG. 1 is an elevational view showing the overall configuration of the present invention and the overall configuration of a first embodiment thereof.

FIG. 2 is a plan view showing the overall configuration of the present invention and the first exemplary embodiment thereof.

FIG. 3 is a diagram showing an operating state of the working apparatus according to the present invention.

FIG. 4 is a diagram showing another operating state of the work apparatus according to the present invention.

FIG. 5 is a diagram showing an outline of a work apparatus according to the present invention.

FIG. 6 is a schematic view showing an overall configuration of a second embodiment (second embodiment) according to the present invention.

FIG. 7 is a schematic view showing an overall configuration of a third embodiment (third embodiment) according to the present invention.

FIG. 8 is a schematic view showing an overall configuration of a fourth embodiment (fourth embodiment) according to the present invention.

FIG. 9 is a diagram showing an operating state of a work device according to a fourth embodiment of the present invention.

FIG. 10 is a view showing a marine product collecting work state of the working apparatus according to the present invention.

FIG. 11 is a view showing a pesticide spraying working state of the working apparatus according to the present invention.

[Explanation of symbols]

 1 Working Device (Working Device) 11 Air Motor 12 Control Unit 13 Reduction Mechanism 18 Joint Device 19 Cutter (Saw) 191 Winch 2 Air Pump (Compressor) 21 Valve 3 Air Tank 31 Valve 4 Winding Device 5 Connection Hose (Air Hose) 6 Engine (Main) Engine 66 Engine (auxiliary engine) 7 Steering device 71 Steering lever 8 Wheels (infinite track) 8'Wheel (infinite track) 81 Chassis frame 9 Power take-off device (PTO) 91 Trailer 95 Storage device (tank) 99 Tree climbing robot

Claims (2)

[Claims] 1. An air pump driven by an output from an engine, an air tank for storing compressed air (high pressure air) generated by the air pump, and an air motor driven by high pressure air from the air tank. What is claimed is: 1. A self-propelled work vehicle comprising: a work device that operates using the air motor as a power source. 2. An auxiliary engine other than the vehicle running engine, and an air pump driven by the auxiliary engine,
A work vehicle mainly comprising an air motor driven by compressed air generated by the air pump, and a work device that operates using the air motor as a power source.