JPH0434664Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Field of industrial application The present invention relates to a fertilization abnormality warning device for paddy field working machines, and more specifically, for paddy field working machines such as riding rice transplanters and sowing machines equipped with fertilization devices. The present invention relates to a fertilization abnormality alarm device that can alert an operator of the content of the abnormality in response to the abnormality in fertilization.

(b) Conventional technology A riding rice transplanter equipped with a conventional fertilization device has a fertilizer tank placed on long brackets extending to the left and right of the driver's seat, and a fertilizer tank installed on each side of the planting section. Fertilizer nozzles are installed near the planting rods,
Paste or liquid fertilizer is communicated from each of the above fertilizer tanks to a sub-tank near the center of the traveling aircraft via a suction hose, and then from the sub-tank to the area below the driver's seat via a number of hoses depending on the number of planting rows. It is designed to be guided by a pump system consisting of a number of installed flex rotor pumps. The paste-like fertilizer is further communicated from the discharge port of each rotor pump through a hose to an air pot-type indicator installed next to the driver's seat, and from each indicator again through a hose. The fertilizer is guided to a respective fertilization nozzle near each planting rod, from which the fertilizer is applied into the paddy soil.

(c) Problems to be solved by the invention By the way, in the above-mentioned riding rice transplanter equipped with the conventional fertilization device, the state of running out of fertilizer can be detected by monitoring the indicator installed next to the driver's seat during fertilization work. Although it can be detected, the operator must constantly monitor the indicator to ensure that the fertilizer does not run out during work, which has the disadvantage that it is difficult for the operator to concentrate on the planting work. In addition, although the conventional indicators described above can detect the presence or absence of fertilizer in the indicator area, they have the disadvantage that they cannot detect abnormalities such as clogging of fertilizer in a nozzle, or disconnection of a hose, etc., and take time to respond. Ta.

(d) Means for solving the problem The present invention aims to solve the above problems. For example, as shown in Figs. Fertilizer detection sensor 26 has a section 26a and a high pressure detection section 26b, and is disposed at an appropriate location on the fertilization pipes 25, 29, and a fertilizer detection sensor 26 that is connected to the sensor 26 and is used to operate the low pressure detection section 26a or the high pressure detection section 26b. The alarm signal generation circuit 35 is characterized in that it is composed of an alarm signal generation circuit 35 that outputs different signals in response to the alarm, and alarm devices 36 and 37 that are connected to the circuit 35 and issue alarms in response to the output signals of the circuit 35. .

(e) Effect Based on the above configuration, during normal fertilization work, the fertilizer pressure inside the fertilization pipes 25 and 29 is appropriate, and both the low pressure detection section 26a and the high pressure detection section 26b of the fertilizer detection sensor 26 are activated. Therefore, no signal is output from the alarm signal generation circuit 35, and no alarm is issued from the alarm devices 36, 37. On the other hand, when the fertilizer nozzle 31 etc. becomes clogged with fertilizer, the fertilizer pressure inside the fertilizer application pipes 25, 29 increases, and when the fertilizer pressure exceeds the set value, the high pressure detection section 26b is activated, and then an alarm signal is generated. circuit 35
For example, an intermittent alarm signal is output from the circuit 35 based on the signal processing operation by the circuit 35, which causes the alarm lamp 36 to blink or the horn 37 to emit an alarm sound intermittently, prompting the operator to operate the fertilization nozzle 3.
A warning is issued that a blockage has occurred in the first class. Also,
When the fertilizing pipes 25, 29 are disconnected or damaged, the fertilizer pressure in the fertilizing pipes 25, 29 decreases, and when the fertilizer pressure falls below the set value plate, the low pressure detection section 26a is activated. For example, a continuous alarm signal is output from the alarm signal generation circuit 35,
The alarm lamp 36 lights up continuously or the horn 37 emits a continuous alarm sound, prompting the operator to check the pipes 25,
29, a warning is issued that a disconnection or the like has occurred.

(f) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the riding rice transplanter 1 has a running body 5 supported by front wheels 2 and rear wheels 3, and the body 5 has a bonnet 6 attached to the front part of the front wheels 2. It is covered with an engine 7 mounted thereon, and a driver's seat 10 is arranged such that a seat 9 is located between the front and rear wheels 2 and 3. Further, at the rear of the traveling body 5, a link 11,
12, a seedling stand 13, and a plurality of planting rods 15.
A planting section 17 having a float 16 and a float 16 is supported, and the planting section 17 is raised and lowered by a hydraulic cylinder (not shown) disposed between the fuselage 5 and the link 11. The left and right positions can be adjusted by a hydraulic cylinder (not shown) disposed between them. Furthermore, step 19 is applied from the bottom of the driver's seat 10 to both sides of the bonnet 6.
Fertilizer tanks 20, 20 for pasty or liquid fertilizer are arranged at the upper part of both sides of the bonnet 6 in the step 19, and the fertilizer is supplied from the tanks 20, 20 to a communication hose 2.
1. Pump device 2 via suction hose 22
3, each fertilizer detection sensor 2 having a low pressure detection section 26a and a high pressure detection section 26b is further connected from the pump device 23 via a hose 25 corresponding to the number of planting rows.
6 and a switching valve 27, and from there, via each hose 29 and drip prevention valve 30, to each planting rod 15...nearby fertilizing nozzle 31...

As shown in FIG. 3, the low pressure detection parts 26a, 26a, . 35a,
35a,..., and also connected to the sensor 26
The high voltage detection sections 26b, 26b, . . . are connected to input terminals 35b, 35b, . . . of the circuit 35 via high voltage system signal lines 33, 33, . Furthermore, the output terminals 35d, 35d, .
Alarm lamps 36, 36, . It is becoming more and more common. 3 is a level sensor disposed inside the fertilizer tank 20 (see FIGS. 1 and 2), and is connected to the signal line 40.
A level warning lamp 41 is connected to the input terminal 35c of the circuit 35 through the output terminal 35f of the circuit 35, and is connected to the monitor section 28 through the output terminal 35f of the circuit 35.
It is becoming connected to.

Since this embodiment has the above configuration,
During normal fertilization work, the fertilizer pumped through the hoses 25 and 29 by the pump device 23 is transferred to the hoses 25 and 29 by the preloading action of the drip prevention valve 30.
Therefore, the fertilizer detection sensor 26 detects the low pressure detection part 2.
6a and high pressure detection section 26b are not activated. Therefore, since no signal is output from the alarm signal generation circuit 35, the alarm lamp 36 does not light up at all, and the horn 37 does not emit any alarm sound. On the other hand, for example, if the fertilizer application nozzle 31 is clogged with fertilizer, the fertilizer pressure within the hoses 25, 29 increases to a set value or higher, and the high pressure detection section 26b is activated. Then, a predetermined signal processing operation is performed in the alarm signal generation circuit 35 by the activation signal from the high voltage detection section 26b, and the output terminals 35d and 3
For example, an intermittent alarm signal is output from 5e,
Based on this, the corresponding alarm lamp 36 flashes, and at the same time the horn 37 generates an intermittent alarm sound, alerting the operator that a particular fertilization nozzle 31 has become clogged. Further, for example, if a disconnection occurs in the hoses 25, 29, the fertilizer pressure in the hoses 25, 29 drops below a set value, and the low pressure detection section 26a is activated. Then, a predetermined signal processing operation is performed in the circuit 35 based on the activation signal from the low pressure detection section 26a, and a continuous alarm signal, for example, is outputted from the output terminals 35d and 35e. Then, the corresponding alarm lamp 36 lights up continuously based on the above-mentioned alarm signal, and at the same time, the horn 37
will emit a series of alarm sounds to alert the operator that a particular hose 25, 29 has become disconnected or damaged.

Next, what is shown in FIGS. 4 and 5 relates to another embodiment in which a part of the above embodiment is changed. In this embodiment, as shown in FIG. to the signal line that activates the fifth
A switch 42 as shown in detail in the figure is connected, and the switch 42 is turned on when the planting clutch lever 43 is turned on as shown in FIGS. It is starting to turn off. As a result, according to this embodiment, an abnormality can be detected by the alarm sound from the horn 37 only during planting work when the planting clutch lever 43 is turned on, and the above-mentioned abnormality can be inspected and
When repairing, it is necessary to use the planting clutch lever 43.
Because the plant is turned off and the planting work is stopped,
Operators can do inspections and other tasks without hearing unpleasant alarm sounds.

Furthermore, what is shown in FIG. 6 relates to another embodiment in which a part of each of the above-mentioned embodiments is further modified. , 26'b, ... are configured so that the output becomes 0 when they are in the operating state,
The outputs are respectively connected to one input terminal of two-input OR elements 46, 46, . . . via inverters 45, 45, .
The outputs of 6... are respectively connected to inverters 45, 45...
The outputs of ... are respectively alarm lamps 36, 36, ...
It is becoming connected to. Seedling-free sensors 47, 47, . . . are arranged in relation to the planted seedlings in each row on the seedling stand 13 (see Figures 1 and 2), and the sensors 47, 47, . The NOR elements 50, 5 are connected to the other input terminals of two-input NOR elements 50, 50, .
The outputs of 0, . . . are connected to the other input terminal of the two-input OR element 46. Furthermore, the outputs of the sensors 47, 47, . . . are connected to a seedling-free detection lamp 52 via a 5-input NAND element 51. Therefore, according to this embodiment, when the high voltage detection section 26'b is activated, the 1 signal of the inverter 45 is transmitted to the OR element 4.
6, the alarm lamp 36 is lit continuously, and
When the no-seedling sensor 47 is activated, its 0 signal is input to the NOR element 50, and each time the oscillator 49 outputs a 0 signal, the NOR element 50 outputs a 1 signal to the OR element 46, causing the alarm lamp 36 to blink. and simultaneously output one signal from the five-input NAND element 51,
The no-seedling detection lamp 52 is lit continuously. In this way, according to this embodiment, it is possible to use the alarm lamp 36 to alert the operator of the situation in which there are no seedlings in each planting row.

(g) Effects of the invention As explained above, according to the invention, if an abnormality occurs in the fertilization pipes 25 and 29, even if the worker is concentrating on the planting work, The lighting of the warning lamp 36 or the sound of the horn 37 alerts the user to the occurrence of an abnormality, thereby eliminating the inconvenience of overlooking the abnormality and continuing planting without fertilizing. Moreover, the alarm signal generation circuit 35
Different alarms are issued to the operator depending on the type of abnormality through the signal processing operation, so the operator can immediately recognize what kind of abnormality has occurred, and can quickly respond to inspections, repairs, etc.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing a riding rice transplanter to which the present invention is applied, Fig. 2 is a plan view thereof, Fig. 3 is a block diagram showing an example of the circuit configuration of the fertilization abnormality alarm device according to the present invention, and Fig. 4 This figure is a block diagram showing another example of the circuit configuration, FIGS. 5a and 5b are state diagrams of switches related to the operating section of FIG. 4, and FIG. 6 is a block diagram showing still another example of the circuit configuration. It is. 25, 29...Fertilization piping (hose), 26...
...Fertilizer detection sensor, 26a...Low pressure detection section, 26
b...High pressure detection section, 35...Alarm signal generation circuit,
36... Alarm (warning lamp), 37... Alarm (horn).

Claims (1)

[Scope of utility model registration request] A fertilizer detection sensor that has a low pressure detection section and a high pressure detection section and is placed at an appropriate location in the fertilization piping, and is connected to the sensor and outputs different signals depending on the operation of the low pressure detection section or high pressure detection section. 1. A fertilization abnormality alarm device for a paddy field working machine, comprising: an alarm signal generating circuit that generates a warning signal; and an alarm device that is connected to the circuit and issues an alarm in response to an output signal of the circuit.