JP2004173558A - Control spray system for tending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control spray system for a tending machine, with which side booms are simply and surely stored and retained in side holders. <P>SOLUTION: This control spray system for the tending machine comprises the right and left side booms 3 and 3 on the tending machine, the right and left side holders 5 and 5, a boom control part, and the like. The retention part 5a of the side holder 5 is equipped with a boom detection body 6 extended in the whole width for receiving the side boom 3. The boom detection body 6 composed of an elastic material exerting deformation on the whole width of the interference range of the side boom 3 is arranged at a position to be interfered with the side boom 3 received in the above retention part 5a, and the boom detection body 6 is equipped with a displacement and conversion part 7 which receives the deformation of the boom detection body 6 and sends a control signal to a boom control part. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a control spraying system for a management machine that sprays chemicals in a field.
[0002]
[Prior art]
Patent Documents 1 and 2 disclose a spraying and dispersing system for a management machine including a boom control unit that controls the side opening / closing operation and the vertical tilting operation of the left and right side booms disposed at the front of the management machine. Known as. Regarding these control spraying systems for control machines, the right and left side booms should be deployed horizontally to the front of the aircraft at the time of spraying, and the right and left side booms should be spread at the end of the spraying. The two side booms can be stably held by being closed along the side of the body and housed in a side holder arranged on the side of the body. In this case, the operator needs to operate the lever to lower and tilt the side boom from above the side holder to the holding position, and stop the lowering and tilting operation at the timing when the side boom is lowered to the holding portion of the side holder. is there. If the stop timing of the side boom is delayed even a little, the driving force of the downward tilting is forcibly applied and the side boom is damaged, so that a boom sensor is provided on the side holder to solve this problem. Thereby, the side boom can be automatically stopped at an appropriate timing.
[Patent Document 1] JP-A-2002-172354 [Patent Document 2] JP-A-2001-258458
[Problems to be solved by the invention]
However, when a simple limit switch is used as the boom sensor, there is a problem that the boom cannot be detected if the lowering position of the side boom is slightly shifted with respect to the holding unit. Also, when the side boom is stored in the side of the fuselage, accompanying work such as the release of the automatic horizontal control is necessary, and in the case of one-side spraying, an operation to adjust the unstable excessive movement is required, I did not endure. In addition, the control spraying system for control equipment has many problems, including the point that manual spraying cannot be performed if the automatic spraying control system fails, and that large capacity spraying cannot be performed due to constraints on the capacity of the control pump. I have.
[0004]
An object of the present invention is to provide a control spraying system for a management machine, which can easily and reliably store and hold a side boom with respect to a side holder and reduce the burden on an operator when the side boom is stored or when spraying on one side, and ground spraying. It is an object of the present invention to provide a control spraying system for a management machine, which enables continuation of spraying work even if the system fails, and also enables large-volume spraying without being affected by constraints on the capacity of the control pump.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is provided on left and right side booms having a base side attached to a front portion of a management machine, and provided on a body side portion for folding and storing and holding the left and right side booms. The left and right side holders, and a boom control unit for controlling the downward tilting operation for storing the left and right side booms in the holding units, respectively, in the control spraying system for a management machine, the side received by the holding unit A boom detector made of an elastic material is provided at a position where the boom interferes with the entire width of the interference range of the side boom, and the boom detector sends a control signal to the boom control unit in response to the deformation. It is characterized by having a displacement converter.
[0006]
When the side boom reaches the holding portion of the side holder, it is deformed in its entire width within a range where the boom detector can interfere with the elastic material, and this deformation is converted into a control signal by the displacement conversion unit and sent to the boom control unit. The up / down tilting operation of the side boom is controlled. When the side boom is detached from the holding portion for control spraying or the like, the detection body elastically recovers, so that the storage detection of the side boom can be performed again.
[0007]
According to a second aspect of the present invention, there is provided a left and right side boom having a base portion attached to a front portion of a management machine and capable of being opened and closed from a folded position to a left and right deployed position on the side of the machine body, And a boom control unit having a control function, the control spraying system for a management machine, wherein both side booms are provided with opening / closing angle detecting means for detecting respective opening / closing angles, and a detection signal from the opening / closing angle detecting means detects both side booms. When the opening / closing angle decreases to a predetermined angle, the boom control unit cancels the horizontal control function.
[0008]
The two side booms are horizontally adjusted by the horizontal control function of the boom control unit in the left-right deployed position according to the left-right inclination of the management machine. When both side booms are folded and stored on the side of the fuselage, when the opening and closing angle of both side booms decreases to a predetermined angle, the boom control unit uses the horizontal control function according to the signal of the opening and closing angle detection means that detects each opening and closing angle. Is canceled, the damage to the side boom due to an unexpected horizontal control operation at the time of moving on a field or traveling on a road after the end of the control spraying is avoided.
[0009]
According to a third aspect of the present invention, there is provided a left and right side boom having a base portion attached to a front portion of the management machine and capable of being driven to open and close from a folded position to a left and right deployed position on the side of the machine body, And a boom control unit having a control function, wherein both side booms are provided with opening / closing angle detecting means for detecting respective opening / closing angles, and one side boom is provided by a detection signal from the opening / closing angle detecting means. When the opening / closing angle decreases to a predetermined angle, the operation sensitivity is changed so that the boom control unit performs the adjustment operation of the horizontal control function with low sensitivity separately set.
[0010]
The two side booms are horizontally adjusted by the horizontal control function of the boom control unit in the left-right deployed position according to the left-right inclination of the management machine. When one of the side booms is folded and stored on the side of the fuselage and its opening angle is reduced to a predetermined angle, the signal of the opening angle detecting means for detecting each opening angle causes the boom control unit to adjust the horizontal control function's adjustment operation sensitivity. The horizontal adjustment is controlled with low sensitivity.
[0011]
The invention according to claim 4 includes a safety valve that suppresses the spraying pressure within a set limit, a flow sensor that detects the flow rate of the control spraying system, and a flow control valve that adjusts the flow rate of the spray control system based on the signal. In the control spraying system for a control machine capable of automatic spraying and spraying at a flow rate, the control spraying system is characterized in that a bypass flow path bypassing a flow sensor and a flow control valve is provided so as to be able to flow.
[0012]
In the control spraying system for a management machine having the above configuration, while the pressure is suppressed within the set limit by the safety valve, in a state where the bypass flow path is closed, the flow rate control valve adjusts the flow rate according to the signal of the flow rate sensor to achieve the target flow rate. Perform automatic control spraying. Further, by communicating the bypass flow path that bypasses the flow sensor and the flow control valve, it is possible to perform the spraying at the flow rate according to the setting adjustment of the safety valve without depending on the function of the flow control valve.
[0013]
The invention according to claim 5 is mounted on a management machine provided with a traveling system using a main mission, and a control pump driven from a live PTO of another system and a live PTO via a clutch is arranged under an operator seat of the management machine. In the control spraying system for a management machine capable of running control spraying, the running system includes an additional pump that receives the power and sends a control solution to the spraying control system by the control pump according to the running speed. It is characterized by being provided separately.
[0014]
Since the additional pump is arranged separately from the control pump and has few restrictions, the capacity can be set as required.When the aircraft travels, the control solution is controlled by the drive system integrated with the travel system according to the travel speed of the management machine. Since it is sent out, it is possible to spray a large flow rate according to the traveling speed while ensuring the rising of the spraying control by the control pump. In addition, when high flow rate spraying is not required, the control pump can be stopped and spraying can be performed efficiently.
[0015]
【The invention's effect】
The control and spraying system for a management machine according to the present invention has the following effects.
Since the control spraying system for the management machine easily detects the deformation of the interference range of the boom detection body and controls the side boom to descend and tilt, the boom detection body is extended over the entire width of the holding portion, thereby holding the boom detection body. Regardless of the receiving position of the side boom in the portion, it is possible to reliably and stably store and hold the side boom in the side holder with a simple configuration.
[0016]
Since the control spraying system for the management machine is configured to cancel the horizontal control function when both side booms are folded and stored on the side of the machine, a cumbersome routine incidental operation after the control spraying is completed is required. Therefore, the burden on the operator can be reduced and the side boom can be stably stored.
[0017]
The control spraying system for the management machine is configured to perform horizontal adjustment control with low sensitivity when one side boom is folded and stored on the side of the fuselage, so when spraying one side using only one side boom. Unstable control due to excessive operation can be suppressed and stable spraying can be easily performed.
[0018]
The control spraying system for the management machine can perform spraying and spraying at a flow rate according to the setting adjustment of the safety valve using the bypass flow path without using the function of the flow control valve. At this time, manual spraying becomes possible. As a result, the control spraying can be continued without disturbing the field work schedule.
[0019]
In the above-mentioned control spraying system for the management machine, an additional pump for spraying a large flow rate according to the traveling speed is provided separately from the control pump. It is possible to perform the flow rate spraying, and also ensure the control spraying efficiency when the large flow rate spraying is not required.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment specifically configured based on the above technical idea will be described below with reference to the drawings.
[0021]
FIG. 1 shows a side view of a management machine equipped with the control spraying system according to the present invention. In FIG. 1, the control and spraying system includes a left and right side booms 3 and 3 having a base attached to a front portion of a management machine 1 and a body side portion for folding and holding the left and right side booms 3 and 3. It comprises left and right side holders 5 and 5 and a boom control unit (not shown) for controlling the downward tilting operation of the left and right side booms 3.
[0022]
FIG. 2 shows an enlarged front view (a), an enlarged plan view (b), and an enlarged side view (c) of the holding portion of the side holder of the control and control spraying system for the management machine in FIG. In FIG. 2, the holding portion 5a of the side holder 5 is formed in a guide shape with its tip expanded to the left and right, and detects a leaf spring 6 that is supported at both ends in the vicinity of the holding portion 5a over its entire width and its bending. And a limit switch (displacement conversion unit) 7 for transmitting a signal to the boom control unit. The leaf spring 6 extends at a position where the leaf spring 6 interferes with the side holder 5 received by the holding portion 5a, and is configured as a boom detector that is entirely elastically deformed by the interference. Further, the boom control unit is configured to stop and control the downward tilting operation of the side boom 3 in accordance with the signal of the limit switch 7.
[0023]
By configuring the control device spraying and dispersing system as described above, when the lower edge of the side boom 3 reaches the holding portion 5a of the side holder 5, the lower edge of the side boom 3 interferes with the leaf spring 6 extending over its entire width, and this leaf spring 6 is deformed by the side boom 3 in its entire width, and the deformation is converted into a control signal by a limit switch 7 arranged at one position, and the boom control unit controls the side boom 3 to stop the downward tilting operation by this signal. I do. Further, when the side boom 3 is detached from the holding portion 5a for control spraying, etc., the storage of the side boom 3 can be detected again by the elastic recovery of the leaf spring 6.
[0024]
Therefore, since the side boom is controlled to move up and down and tilt by the deformation of the elastic body extending from the holding section, the control and spraying system for the management machine can be reliably provided with a simple configuration regardless of the receiving position of the side boom in the holding section. Can be stably stored and held in the side holder.
[0025]
Next, the boom horizontal control of the control and spraying system for the management machine will be described. The control spraying system for a management machine is provided with a boom control unit having a horizontal control function of horizontally adjusting the left and right side booms 3. Each of the side booms 3, 3 is provided with a not-shown potentiometer (opening / closing angle detecting means) for detecting the opening / closing angle of each side, and when the opening / closing angle of both side booms 3, 3 decreases to a predetermined angle by a detection signal from this potentiometer. , The boom control unit is configured to cancel the horizontal control function.
[0026]
The side booms 3, 3 are horizontally adjusted in the left-right deployed position by the horizontal control function of the boom control unit according to the left-right inclination of the management machine. When the side booms 3, 3 are folded and stored on the side of the fuselage, when the opening / closing angle of the side booms 3, 3 decreases to a predetermined angle, the boom control unit receives a signal from a potentiometer that detects the opening / closing angle of each. Cancels the horizontal control function, thereby avoiding damage to the side boom due to an unexpected horizontal control operation when moving on a field after the control spraying is completed or when traveling on a road. Therefore, the burden on the operator can be reduced and the side booms 3, 3 can be stably stored without the need for a troublesome routine accompanying operation after the end of the spraying.
[0027]
In addition, as another boom horizontal control, when the opening and closing angle of one side boom is reduced to a predetermined angle by the opening and closing angle detection signal by the potentiometer of both side booms of the control spraying system for the control machine, the horizontal control with low sensitivity by separate setting The boom control unit is configured to change the operation sensitivity so as to perform a function adjustment operation.
[0028]
The side booms 3, 3 are horizontally adjusted in the left-right deployed position by the horizontal control function of the boom control unit according to the left-right inclination of the management machine. When one of the side booms 3 is folded and housed on the side of the fuselage and the opening / closing angle is reduced to a predetermined angle, a signal of a potentiometer for detecting the opening / closing angle causes the boom control unit to adjust the sensitivity of the horizontal control function. To control the horizontal adjustment with low sensitivity. Therefore, it is possible to suppress unstable control due to an excessive horizontal adjustment operation when one-side spraying is performed using only one side boom 3.
[0029]
Next, a control box for operating the boom will be described. FIG. 3 shows a plan view of a control box for operating the boom. In FIG. 3, a control box 11 for operating the boom is arranged on the right side of the operator seat 12. The control box 11 has left and right cross switches 13L and 13R for operating the left and right side booms at the frontmost position. Are arranged side by side. The whole adjustment part 14 of the boom is in contact with the rear part, the spray setting part 15 is arranged behind the adjustment part 14, and the spray lock part 16 of each boom is arranged at the rearmost part.
[0030]
The left and right cross switches 13L and 13R are lever switches that can be operated in the front-rear direction and the left-right direction, and are “lower” on the tip side of the side boom when tilted forward, “raise” when tilted backward, and “up” when tilted outward. Input each operation of “stretch” and “shrink” by inward tilt operation. The overall boom adjuster 14 adjusts and inputs the up, down, left, and right inclinations of the boom mounting hitch. The spray setting unit 15 performs setting adjustment input such as a control spray flow rate. The spray lock unit 16 inputs the ON / OFF of the spray for each of the “left”, “center”, and “right” booms.
[0031]
With the control box having the above configuration, the operation of the left and right cross switches 13L and 13R, which are frequently used during the spraying operation by the management machine, can be performed in an easy posture, so that the burden on the operator is reduced as compared with the conventional rear-end arrangement. Can be reduced.
[0032]
Next, the configuration of the control and spraying system will be described. FIG. 4 shows a device connection diagram of the control spraying system. In FIG. 4, the control spraying system is connected to a control pump 22 for sending a control solution from a control tank 21 for storing the control solution, and a safety valve 23, an air chamber 24, a flow control valve 25, and a flow sensor 26 are connected to the control side. In addition, three systems of branch spray cocks 27 are provided in series, and each system is connected to left, middle and right spraying booms 29L, 29C, 29R via hoses 28. In addition, a hose 30 and an on-off valve 31 that bypass and communicate with the flow control valve 25 and the flow sensor 26 are attached.
[0033]
When the on-off valve 31 is closed, the pressure is controlled within the set limit by the safety valve 23, and the flow control valve 25 adjusts the flow rate of the automatic spraying flow path A by the signal of the flow rate sensor 26 when the on-off valve 31 is closed. And perform automatic control spraying at the target flow rate. Further, when the on-off valve 31 is opened, the bypass flow path B by the flow sensor 26 and the hose 30 that bypasses the flow control valve 25 is connected, so that even when the flow control valve 25 does not function, the safety valve 23 is opened. Spraying can be performed at a flow rate according to the setting adjustment.
[0034]
Therefore, the bypass flow path B formed by the hose 30 of the control and control system spraying system functions as an emergency spraying route that allows manual spraying even when the flow rate sensor 26 or the flow rate control valve 25 and its drive system fail. The control and spraying work can be performed without disturbing the schedule.
[0035]
Also, as shown in FIG. 5, a two-way switching valve 32 is provided at a pipe connection part connecting the hose 30 instead of the on-off valve 31 of the control and spraying system, so that the flow path can be switched, so that an emergency can be achieved. By ensuring the spraying route and comparing the pressure value of the pressure sensor 27a provided in the branch spray cock 27 with the flow rate value of the flow rate sensor 26, the two-way switching valve 32 shown in FIGS. It is possible to determine the operation of the cock 32a and display a warning. That is, as shown in FIG. 6 (b), the control spray from the bypass flow path B by operating the two-way switching valve 32 has a self-regulating flow despite the normal spray pressure (5 to 25 kg / cm 2). Since the flow value of the flow sensor 26 of the road A becomes 0, for example, an abnormal display of "H" can be displayed on the microcomputer display unit based on this specificity, so that the operator can recognize the operation abnormality. Can be.
[0036]
When a blind plug is provided at the connection part of the hose 30 so as to be detachable, it is apparent that the opening / closing valve 31 and the two-way switching valve 32 do not need to function as an emergency spraying route as described above. Therefore, the detailed description is omitted.
[0037]
Next, the pump of the spray control system will be described. FIG. 7 shows a drive system diagram of the control spraying system pump. In FIG. 7, the power of an engine 41 mounted on a management machine is divided into a live PTO 43 and a main mission 44 by a front mission 42, and a control pump 46 is driven from the live PTO 43 via an electromagnetic clutch 45. The control pump 46 is disposed under the operator seat of the control device in the same manner as in the past, so as to ensure a rise in the spray pressure so that the control can be sprayed together with the start of running of the machine. The main transmission 44 outputs a PTO shaft 47 in addition to the traveling system, and an additional pump 48 driven by the PTO shaft 47 is provided at an appropriate position different from the control pump 46. The additional pump 48 is configured to supplement the capacity of the control pump 46 and supply the control liquid to the control spray system for large-scale spraying of the control spray system.
[0038]
Since the additional pump 48 is arranged separately from the control pump 46 and has few restrictions, the capacity can be set as required. Further, as shown in the chart of the spray amount of the control spray system in FIG. Since the application amount C2 of the additional pump 48 is sent out according to the traveling speed of the management machine in addition to the application amount C1, the rising speed of the control application is ensured by the conventional control pump 46, and the traveling speed is reduced by the additional pump 48. Large-volume spraying can be performed accordingly. On the other hand, when large flow rate spraying is not required, the control pump 46 can be stopped to perform efficient spraying.
[0039]
Therefore, the above-mentioned control spraying system for a management machine can perform high flow rate spraying without impairing the rise of control spraying by handling as an optional configuration by the additional pump 48 separately provided from the control pump 46. When it is not necessary, the spraying efficiency can be ensured.
[Brief description of the drawings]
FIG. 1 is a side view of a management machine equipped with a control spraying system according to the present invention. FIG. 2 is an enlarged front view (a) and an enlarged plan view of a holding portion of a side holder of the control spraying system for the management machine in FIG. (B), the enlarged side view (c)
FIG. 3 is a plan view of a control box. FIG. 4 is a device connection diagram of a control spraying system. FIG. 5 is a perspective view of an essential part of a connection configuration example using a two-way switching valve. FIG. Choices A (a) and B (b)
FIG. 7 is a drive system diagram of a control spraying system pump. FIG. 8 is a chart of a spraying amount of the control spraying system.
DESCRIPTION OF SYMBOLS 1 Management device 3 Side boom 5 Side holder 5a Holding part 6 Leaf spring (boom detection body)
7 Limit switch (displacement converter)
11 Control Box 12 Operator Seat 13L, 13R Cross Switch 22 Control Pump 23 Safety Valve 25 Flow Control Valve 26 Flow Sensor 27a Pressure Sensor 30 Hose 31 Open / Close Valve 32 Two-way Switching Valve 43 Live PTO
44 Main mission 45 Electromagnetic clutch 46 Controlling pump 47 PTO shaft 48 Additional pump A Automatic adjustment flow path B Detour flow path

Claims (5)

Left and right side booms (3, 3) with the base side attached to the front of the management machine,
Left and right side holders (5, 5) provided on the fuselage side for folding and holding the left and right side booms (3, 3);
In a control-apparatus control and dispersing system comprising: a boom control unit that controls the downward tilting operation of the left and right side booms (3, 3) in the holding units (5a, 5a), respectively.
A boom detector (6) made of an elastic material that is deformed over the entire width of the interference range of the side boom (3) is provided at a position where it interferes with the side boom (3) received by the holding portion (5a);
The boom detector (6) is provided with a displacement conversion unit (7) for transmitting a control signal to the boom control unit in response to the deformation thereof, and a control and spraying system for a management machine. The left and right side booms (3, 3) which are attached to the front of the control machine and can be opened and closed from the folded position on the side of the fuselage to the left and right deployed position, and adjust the left and right side booms (3, 3) horizontally In the control spraying system for a management machine comprising a boom control unit having a horizontal control function,
The two side booms (3, 3) are provided with opening / closing angle detecting means for detecting respective opening / closing angles, and when the opening / closing angle of both side booms is reduced to a predetermined angle by a detection signal from the opening / closing angle detecting means, a boom control unit is provided. Cancels the horizontal control function. The left and right side booms (3, 3) which are attached to the front of the control machine and can be opened and closed from the folded position on the side of the fuselage to the left and right deployed position, and adjust the left and right side booms (3, 3) horizontally In the control spraying system for a management machine comprising a boom control unit having a horizontal control function,
The left and right side booms (3, 3) are provided with opening / closing angle detecting means for detecting the respective opening / closing angles, and the opening / closing angle of one side boom (3) is adjusted to a predetermined angle by a detection signal from the opening / closing angle detecting means. When the number is reduced, the operation sensitivity is changed so that the boom control unit performs the adjustment operation of the horizontal control function with low sensitivity according to a separate setting. A safety valve (23) for suppressing the spray pressure within a set limit, a flow rate sensor (26) for detecting the flow rate of the spray control system, and a flow control valve (25) for adjusting the spray flow rate of the spray control system based on the signal thereof. In the control spraying system for control machines that can automatically spray at the set flow rate,
The control spraying system according to claim 1, wherein a bypass flow path (30) bypassing the flow sensor (26) and the flow control valve (25) is provided in the control spray system. The control pump is mounted on a management machine having a traveling system by a main mission (44) and is driven from a live PTO (43) of another system different from the main mission (44) via a clutch (45). In the control spraying system for the control machine, which can be arranged under the operator seat for running control spraying,
In the traveling system, an additional pump (48) for receiving the power and supplying a control liquid to the control spraying system by the control pump (46) according to the traveling speed is provided separately from the control pump (46). A control spraying system for a management machine.

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