JP2008079515A - Paddy field working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make maneuvering operation for stable traveling of a machine body readily performable, without causing troubles, such as overturning, designed for multipurpose uses. <P>SOLUTION: The paddy field working machine is equipped with means 50, 51 and 53 for detecting the mounting and demounting of the device 20 for a traveling machine body 1 and a detecting or a calculating means 60 for vehicle speed. Furthermore, the working machine is provided with an informing means 15 for warning that traveling is carried out, in a state in which the implement is not mounted at a prescribed traveling speed or higher during the traveling by removing the device 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paddy field working machine in which a seeding or seedling planting operation device for performing sowing or seedling planting on a self-propelled traveling machine body equipped with an engine and a working device such as a weeding machine are detachable. Relates to a technique for traveling with a working device removed from a traveling machine body or traveling with a working device of a type different from a reference working device.

In this kind of paddy field work machine, for example, in a work machine configured to connect a heavy work apparatus such as a seedling planting apparatus to the rear part of the travel machine body via a lifting link mechanism, By arranging the part-side heavy object and equipped with a balance weight and configuring the traveling machine body in the front balance state, the stability of the machine body in a state where the work device is connected is improved.
For this reason, conventionally, when a control device having a relatively small weight is provided, the fact that this is detected and the maximum traveling speed of the aircraft is regulated is intended to stabilize the aircraft (see, for example, Patent Document 1). ).

Japanese Patent Laid-Open No. 11-89312 (paragraph “0020”, FIGS. 4 and 9)

  The conventional paddy field work machine regulates the maximum speed according to the type of work equipment connected to the traveling machine body, so it is effective in suppressing the collapse of the machine body stability due to pre-balance in high speed running. It is. However, in this structure, even if the vehicle is traveling in a state where the speed limit is not reached, the vehicle is suddenly operated without being aware that the work device is not connected or the light work device is connected. There is a possibility that driving that considers braking or running on slopes may not be performed.

  SUMMARY OF THE INVENTION An object of the present invention is to make it easy to perform a maneuvering operation for stably running an airframe without causing inconvenience such as a fall in a multipurpose work machine.

The paddy field working machine according to the present invention, which has been taken to achieve the above object, has the following technical means.
[Solution 1]
A paddy field work machine configured to detachably connect a work device to the rear part of a traveling machine body, comprising means for detecting attachment / detachment of the work device to / from the traveling machine body, and vehicle speed detection or calculation means, and removing the work device. When the vehicle is traveling, it is provided with an informing means for warning that the vehicle is traveling at a speed equal to or higher than a predetermined traveling speed and with no working device attached.

[Operation and effect of invention according to Solution 1]
As described above, it is provided with notifying means for detecting the attachment / detachment of the working device with respect to the traveling machine body and the vehicle speed and warning that the traveling is performed at a predetermined traveling speed or higher and the working device is not attached. Therefore, the notification alerts the driver that the vehicle is traveling without a work device attached, and enables the vehicle to travel without a work device that requires particularly careful driving. Yes.

[Solution 2]
In a paddy field work machine configured to detachably connect a work device to the rear part of a traveling machine body, the paddy field work machine includes means for detecting attachment / detachment of a predetermined work device to / from the traveling machine body, and vehicle speed detection or calculation means, When traveling with the work device attached, a notification means for warning that the traveling is performed with the predetermined work device attached at a predetermined traveling speed or higher is provided.

[Operation and effect of invention according to Solution 2]
In the invention according to Solution 2, a warning is given that the working device connected to the traveling machine body is a predetermined working device, and the traveling speed when the predetermined working device is attached is equal to or higher than the predetermined traveling speed. Since the notification means is provided, the notification alerts the driver that the vehicle is traveling at a predetermined speed or higher with a predetermined work device attached, and not only the traveling speed. It is possible to call attention to driving on a slope or sudden braking.

[Solution 3]
In the paddy field work machine described in the solution 1 or 2, the operation of the transmission is linked with the accelerator operation, and the vehicle speed is detected based on the detection of the shift operation position.

[Operation and effect of invention according to Solution 3]
The invention according to the solution means 3 has an advantage that the vehicle speed detection means is simplified because the speed change operation is detected as information directly related to a change in engine rotational speed or a change in travel speed.
Moreover, by detecting the change in the engine speed, for example, the traveling machine body that is not connected to the work device is operated so as to be at a predetermined speed that is equal to or higher than the idling speed while stopping at some resistance. If this is detected, it is possible to set an alarm to be issued even if the vehicle does not actually start in order to avoid sudden start leading to sudden braking.
Therefore, there is an advantage that a configuration for performing stable airframe traveling can be obtained with an even simpler structure.

Hereinafter, an example of an embodiment of the present invention will be described based on the drawings.
[Overall configuration of paddy field work machine]

  FIG. 1 shows an entire side surface of a riding type rice transplanter as an example of a paddy field working machine according to the present invention. This rice transplanter is provided with a hydraulic lift at the rear of a traveling machine body 1 formed in a riding type. A power take-out shaft extended from the traveling machine body 1 side is connected to a seedling planting device 20 (corresponding to the working device of the present invention) via a link mechanism 3 that swings up and down by the operation of the cylinder 2 so as to be driven up and down. 4 to be driven.

  As shown in FIGS. 1 and 2, the traveling machine body 1 transmits power from an engine 5 mounted on the front thereof to the left and right front wheels via a hydrostatic continuously variable transmission 6 and a gear transmission 7. 8 and the rear wheel 9 are configured to be a four-wheel drive type that is transmitted for traveling, and a riding operation unit 12 including a steering wheel 10 for steering the left and right front wheels 8, a driver seat 11, and the like is formed at the center. In addition, a reserve seedling base 14 is mounted on the left and right sides of the cover body where the engine 5 is provided.

The hydrostatic continuously variable transmission 6 is based on a swing operation of a lever-type shift operation tool 13 provided in the boarding operation unit 12, in both forward and reverse directions with a shift neutral position as a boundary. It is configured so that it can be controlled at high and low speeds, and is set and controlled so that the speed increases as the distance from the neutral position increases, and the engine speed also increases in synchronization. .
A signal that is output to the control panel portion provided with the steering wheel 10 and the like of the traveling machine body 1 based on the mounting status of various working devices and the traveling speed based on a command from the control device 60 described later. Is provided as a notification means with a sound, light, or image, or a combination thereof.

  As shown in FIG. 1, the seedling planting device 20 includes a power distribution mechanism 22 to which working power from the gear transmission 7 is transmitted, a left-right main frame 23 that supports the power distribution mechanism 22, and the like. Three planting transmission cases 24 extending rearward from the main frame 23, rotary planting mechanisms 25 respectively disposed on the left and right sides of the respective planting transmission cases 24, and mat-like seedlings for six strips The seedling mounting table 26 on which (an example of the mounting seedling) is mounted, the six seedling vertical feed mechanisms 27 that operate corresponding to each of the six matted seedlings, and the seedling mounting table 26 with a constant stroke in the left-right direction A lateral feed drive mechanism 28 that reciprocates, a vertical feed drive mechanism 29 that operates a seedling vertical feed mechanism 27 every time the seedling mount 26 reaches the left and right stroke ends, and three leveling floats that level the seedling planting site in advance. 21, Etc. are configured for planting Article 6 with a.

As shown in FIG. 1, a medicine supply device 30 that supplies a predetermined amount of medicine to the mat-like seedlings placed on the seedling placing stand 26 is arranged at the upper rear portion of the seedling planting device 20.
The medicine supply device 30 includes a hopper 31 that stores granular medicine, a feeding mechanism 32 that feeds a predetermined amount of medicine from the hopper 31, and a supply hose 33 that feeds and guides the medicine fed by the feeding mechanism 32 downward. And is supported by a support frame 34 erected from the bottom of the seedling mount 26.

[Detection / removal of work equipment]
The seedling planting device 20 is configured to be detachable with respect to the link mechanism 3, and although not shown in the drawings, the normal seedling planting device 20 is provided with an operation state of various mechanism parts, for example, seedlings. Various sensors for detecting the remaining amount and planting depth are provided.
The detection signals of these various sensors are configured to be freely connected and disconnected via connectors 50 and 51 as shown in FIG. 4 with respect to the control device 60 provided on the traveling machine body side.

FIG. 3 shows a state in which a mechanical weeding device 40 is connected to the rear portion of the traveling machine body 1 as another working device instead of the seedling planting device 20 described above.
This weeding device 40 is a row weeding mechanism 41 configured to rotationally drive a weeding rotor 43 arranged in parallel at the same pitch as the streak pitch so as to be located between the streaks of planted seedlings, A well-known herbicidal mechanism 42 that is constructed by attaching a weeding tine 44 formed by suspending a wire having moderate elasticity downward to a movable frame that reciprocally moves left and right is arranged in the front-and-rear direction, and the link mechanism 3 is integrally mounted. This structure is detachable from the link mechanism 3.
And, it is equipped with various sensors for operating states of various mechanism parts, for example, grounding position detection and planting seedling position detection, which are provided in the streak weeding mechanism 41 and the inter-strain weeding mechanism 42, The detection signals of these various sensors are configured to be freely connected and disconnected via connectors 50 and 52 as shown in FIG. 4 with respect to the control device 60 provided on the traveling machine body side.

Since it is configured as described above, when a plurality of different types of work devices are selected and coupled to the rear part of the traveling machine body 1, the connection forms of the connectors 50 to 52 and the short-circuit tool 53 are as follows. become.
That is, as shown in FIG. 4, a plurality of connection terminals (three examples are illustrated in FIG. 4) are provided for the connector 50 on the traveling machine body 1 side, and different types of working devices (seedlings) are provided. A pair of connecting terminals x, which are arranged differently according to the connectors 51, 52 (two examples are shown in FIG. 4) and the short-circuiting tool 53 of the planting device 20 or the weeding device 40). y is provided, and a signal indicating the connection result is input to the control device 60 based on the combination of the connection terminals a to c on the traveling machine body 1 side to which the connection terminals x and y on the work device side are connected. The discriminating means 61 configured by programming stored and stored in the control device 60 is configured to discriminate the type of work device and the unconnected state.

  The operation position of the transmission operating tool 13 is detected by a potentiometer 13A, and the detection signal is transmitted to the control device 60. The control device 60 calculates the engine speed based on a predetermined program, and travels from the engine speed. It is configured to obtain a speed value.

[Control form]
In the paddy field working machine configured as described above, alarm-related control based on the relationship between the attachment / detachment of the working device and the traveling speed will be described based on a flowchart.
FIG. 5 shows a control mode in the case of performing based on whether or not the traveling machine body 1 is equipped with a single working device (seedling planting device 20).

[1] First, it is detected whether the traveling machine body side connector 50 and the work apparatus side connector 51 are connected, or whether the traveling machine body side connector 50 and the short circuit tool 53 are connected (step # 01). ).
[2] If the traveling machine side connector 50 and the short-circuit tool 53 are connected, the engine speed is detected, and if the work device side connector 51 is connected, no control is performed (step # 02). .
[3] Next, it is determined whether or not the detection result of the engine speed exceeds the speed set in advance as the allowable value a (step # 03).
[4] If the engine speed exceeds the allowable value a, an alarm a notification (buzzer or lamp) is performed, and if not, control is not performed (step # 04).
[5] After the notification by the alarm a, the engine speed is detected again (step # 05).
[6] It is detected whether or not the engine speed detected again exceeds the allowable value a, and if it exceeds, the notification by the alarm a is repeated again (step # 06).
[7] If the allowable value a is not exceeded, the alarm is stopped and the control is terminated (step # 07).
[8] After detecting the allowable value a in step 03, the engine speed is subsequently set as an allowable value larger than the allowable value a, that is, the allowable value b which is the engine speed at a higher speed. Is determined (step # 08).
[9] If the engine speed exceeds the allowable value b, an alarm b different from the alarm a (for example, a different sound volume, tone, etc.) is notified. Maintain (step # 09).
[10] After the notification by the alarm b, the engine speed is detected again (step # 10).
[11] It is detected again whether or not the detected engine speed exceeds the allowable value b, and if it exceeds, the notification by the alarm b is repeated again (step # 11).

[Another embodiment]
FIG. 6 is a control in the case where the traveling machine body 1 is operated based on which one of a plurality of types of work devices (the seedling planting device 20 and the weeding device 40) is equipped or none of them is equipped. The form is shown.

[20] First, the connector 50 on the traveling machine body side and the connectors 51 and 52 on each working device (the seedling planting device 20 and the weeding device 40) side are not connected, or the connector 50 on the traveling machine body side and the short circuit tool 53 is detected (step # 20).
[21] The traveling machine body side connector 50 and each working device (seedling planting device 20, weeding device 40) side connector 51, 52 are not connected, or the traveling machine body side connector 50 and the short-circuit tool 53. Are connected, a flag “0” is set (step # 21).
[22] If the traveling machine body side connector 50 and the predetermined working device (weeding device 40) side connector 52 are connected, a flag “1” is set, and the traveling machine body side connector 50 and the reference working device are set. If the connector 51 on the (planting device 20) side is connected, control is not performed (steps # 22 and # 23).
[23] The engine speed is detected (step # 24).
[24] Next, it is determined whether or not the detection result of the engine speed exceeds a speed set in advance as an allowable value I (value when the working device is disconnected). Control is not performed (step # 25).
[25] If the engine speed exceeds the allowable value I, it is determined whether or not the flag is “0”. (Step # 26).
[26] If the flag is “0”, notification (buzzer or lamp, etc.) by a preset alarm I is performed (step # 27).
[27] In step # 26, if the flag is not "0", it is determined whether or not the engine speed exceeds a speed set in advance as an allowable value II (a value when using the weeding device 40). If the allowable value II is exceeded, the alarm II set separately from the alarm I is notified (for example, one having a different volume or tone), and if not, the alarm I is notified (step #). 28, # 29, # 27).

[Others]
The working device different from the seedling planting device 20 is not limited to the mechanical weeding device 40 shown in the above-described embodiment, and may be a chemical spraying device, a direct seeding device, or the like. The value of the running speed as a value may be set as appropriate according to the type of work device to be used. The present invention can also be applied to a paddy field work machine in which the engine 5 is disposed below the driver's seat 11.

Side view of a riding rice transplanter with a seedling planting device Side view of a riding rice transplanter with the seedling planting device removed Side view of riding rice transplanter with weeding equipment Block diagram showing the control system Flow chart showing alarm related control mode Flow chart showing another control mode related to alarm

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Link mechanism 5 Engine 13 Shifting operation tool 13A Potentiometer 15 Alarm device 20 Seedling planting device 30 Drug supply device 40 Weeding device 50-52 Connector 53 Short-circuiting tool 60 Control device 61 Discriminating means

Claims (3)

A paddy field work machine configured to detachably connect the work device to the rear part of the traveling machine body,
Means for detecting attachment / detachment of the work device to / from the traveling machine body, and vehicle speed detection or calculation means,
A paddy field work machine provided with notifying means for warning that the vehicle is traveling in a state where the working device is not attached at a predetermined traveling speed or more when traveling with the working device removed. A paddy field work machine configured to detachably connect the work device to the rear part of the traveling machine body,
A means for detecting attachment / detachment of a predetermined work device to / from the traveling machine body, and a vehicle speed detection or calculation means,
A paddy field work machine provided with notification means for warning that the vehicle is traveling in a state where a predetermined work device is attached at a speed equal to or higher than a predetermined travel speed when traveling with the predetermined work device attached.   The paddy field work machine according to claim 1 or 2, wherein the operation of the transmission and the accelerator operation are linked to detect the vehicle speed based on the detection of the shift operation position.

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