JP2008295378A - Self-propelled control machine - Google Patents

Abstract

[PROBLEMS] To improve the working efficiency of a self-propelled control machine provided with spraying devices on the front and rear sides of a vehicle body.
In a self-propelled pest control machine having a spray boom 9 at the front of a vehicle body 1 and capable of traveling with left and right front wheels 3, 3 and left and right rear wheels 4, 4, a rear spray device 50 is provided at the rear of the vehicle body 1, The left and right nozzles 53 and 53 of the rear spraying device 50 are disposed behind the left and right rear wheels 4 and 4, and the left and right nozzles 53 and 53 approach the left and right rear wheels 4 and 4 when the rear spraying device 50 is in a working state. The left and right nozzles 53 and 53 are configured to be separated from the left and right rear wheels 4 and 4 when the rear spraying device 50 is not in a working state.
[Selection] Figure 1

Description

  The present invention relates to a self-propelled control machine for spraying a chemical solution, and belongs to the technical field of agricultural machinery.

Conventionally, as shown in patent document 1, the structure which spreads a chemical | medical solution to a farm field from the front side and back side of a body is disclosed.
Japanese Patent Laid-Open No. 10-229802

  In the prior art, the rear spraying device does not move with respect to the rear wheel regardless of the presence or absence of the chemical spraying on the rear side of the aircraft during the chemical spraying operation. For this reason, in the case of the conditions which do not spray a chemical | medical solution, there exists a fault that the mud etc. adhering to a rear wheel will be applied to a back side spraying apparatus. In particular, if it adheres to the nozzle, it will adversely affect the subsequent spraying. Further, since the rear spraying device is configured to spray over the range of the rear wheel width, there is a disadvantage that the chemical spray is wastefully consumed due to multiple spraying.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the present invention according to claim 1 is a self-propelled pest control which includes a spreading boom (9) at the front of the vehicle body (1) and can travel on the left and right front wheels (3, 3) and the left and right rear wheels (4, 4). In the machine, a rear spraying device (50) is provided at the rear of the vehicle body (1), and the left and right nozzles (53, 53) of the rear spraying device (50) are arranged behind the left and right rear wheels (4, 4), The left and right nozzles (53, 53) approach the left and right rear wheels (4, 4) when the rear spraying device (50) is in a working state, and the left and right nozzles (53, 53) when the rear spraying device (50) is not in a working state. Is a self-propelled control machine characterized in that it is configured to be separated from the left and right rear wheels (4, 4).

  The spraying operation is performed with the spraying boom (9) at the front of the vehicle body (1) and the rear spraying device (50) at the rear of the vehicle body (1) while the vehicle body (1) is traveling. In particular, since the left and right nozzles (53, 53) of the rear spraying device (50) are arranged behind the left and right rear wheels (4, 4), the part after passing through the left and right rear wheels (4, 4) is sprayed. . When the rear spraying device (50) is in a working state, the left and right nozzles (53, 53) approach the left and right rear wheels (4, 4). Further, when the rear spraying device (50) is not in operation, the left and right nozzles (53, 53) are separated from the left and right rear wheels (4, 4).

  The present invention according to claim 2 is characterized in that the non-working state and the working state of the rear spraying device (50) are detected by the forward / reverse detection means (62) of the vehicle body (1). The self-propelled control machine according to claim 1 is provided.

  When the forward / reverse detection means (62) of the vehicle body (1) detects the reverse state, the rear spraying device (50) is in a non-working state, and the left and right nozzles (53, 53) are separated from the left and right rear wheels (4, 4).

  The effect of claim 1 is that since the chemical solution is also sprayed on the portion where the left and right rear wheels (4, 4) travel, the effect of the chemical solution spraying increases. In the case where the chemical solution is not sprayed, the rear spray device (50) is separated from the rear wheels (4, 4), so that mud or the like adhering to the rear wheels (4, 4) is scattered on the rear spray device. (50) can be prevented. Further, since the rear spraying device (50) sprays only the part after the left and right rear wheels (4, 4) have passed, it can be prevented from becoming a multiple spraying with the front spraying boom (9). It becomes like this.

  In addition to the effect of claim 1, the effect of claim 2 is such that the non-working state and working state of the rear spraying device (50) are detected by the forward / reverse detection means (62) of the vehicle body (1). Therefore, the operability is improved. In particular, in the case of repeating forward and backward movements, in order to avoid multiple spraying, the rear spraying device (50) is basically not operated in reverse operation. For this reason, only the operation of the forward / reverse detection means (62) of the vehicle body (1) may be performed.

An embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a riding type control machine.
An engine E is mounted on the front portion of the vehicle body 1, the rotational power of the engine E is transmitted to the transmission in the mission case 2, and the rotational power decelerated by the transmission is transmitted to the left and right front wheels 3 and 3 It is configured to transmit to the rear wheels 4 and 4. A chemical tank 5 for storing a chemical solution is installed at the rear of the machine body, and a driver's seat 6 is provided on the front side of the chemical solution tank 5 and a steering handle 7 is provided in front thereof. A chemical solution tank 5 projects from both sides of the driver seat 6. Reference numeral 17 denotes a panel provided with an engine speed display and various warning lights.

  The chemical solution in the chemical solution tank 5 is ejected from each nozzle 11 of the spray hose 10 provided in the spray boom 9 described later by the pump 8. The pump 8 is configured to be driven from the engine E by a belt pulley transmission system 8a.

  Boom storage support frames 13 and 13 for storing and supporting the spreading boom 9 are erected on both the left and right sides of the machine body, and are configured to be latched and held by the receivers 14, so that the vehicle can run at a high speed. The receiving member 14 is provided with an elastic body for absorbing vibration at the time.

  The spreading boom 9 will be described. The center spray boom (center boom) 9a substantially coincides with the width of the airframe, and the left and right spray booms (side booms) 9b, 9b connected to the left and right sides thereof are more than the center spray boom (center boom) 9a. The length is long.

  The side boom 9b is pivotally connected to the center center boom 9a, and is rotated upward by the side boom upper and lower cylinders 15 to be held in the stowed state or in a spraying work posture state substantially parallel to the ground. It can be rotated and supported. In addition, 16 is a boom raising / lowering cylinder which raises / lowers the whole spreading | diffusion boom.

Next, the spraying circuit 12 of the boom sprayer (chemical solution spraying device) of the riding type control machine will be described with reference to FIGS. 3 and 4.
An operation panel 20 and a control panel 21 and spray cocks C1, C2, C3 of the booms 9a and 9b that can be manually opened and closed are installed on the side of the driver's seat 6.

  Further, on the control operation panel 21 provided with the operation panel 20, display units such as a spray setting 23, a pressure 24, a flow rate 25, a total flow rate 26 and the like are displayed on the left side of the display 22 at the center upper part. The data content displayed on the display is indicated by a triangular mark that is lit at the left end of the display. On the right side of the display 22, a display switching button 28 as a display switching means is provided. Below these, an automatic push button (switch) 29 is provided, and an on state of the automatic push button (switch) 29 is indicated by a pilot lamp 30. Further, the configuration includes a spray setting button switch 31, increase / decrease button switches 32 and 33, a cumulative reset switch 34, and the like.

  The chemical liquid suction / discharge path of the spray circuit 12 includes a low pressure water intake path 35 extending from the chemical liquid tank 5 to the pump 8 and a high pressure water discharge path 37 extending from the pump 8 to the spray booms 9a and 9b via the flow rate control valve 36. Are connected by a hose or the like. 9c is an extension boom, and is configured to be connected to the spreading boom 9b, and is configured to be attached / detached in accordance with a working state. If the extension boom 9c is always connected, spraying is performed by opening the cock 9d when spraying using the extension boom 9c, and spraying is performed by closing the cock 9d when not using the extension boom 9c. It may not be possible.

  The high-pressure water discharge path 37 is provided with a spillage return path 40 having a safety valve 38 for releasing a liquid pressure higher than a certain pressure, and can be returned to the chemical liquid tank 5. In addition, a stirring path 41 is communicated with the bottom of the chemical liquid tank 5 so that a part of the chemical liquid is constantly ejected and reduced into the tank to agitate the chemical liquid in the chemical liquid tank 5. In the high-pressure water discharge path 37 between the flow control valve 36 and the spray cocks C1, C2, C3 to the booms 9a, 9b, a pressure sensor 42 for detecting the fluid pressure and a first flow rate sensor 43 for detecting the flow rate are provided. Provided. The opening degree of the flow control valve 36 is controlled by a control motor. Reference numeral 39 denotes an air chamber.

  The chemical liquid flows from the spray cocks C1, C2, C3 to the left side boom 9b, the center boom 9a, and the right side boom 9b are connected by pipes D1, D2, D3.

  In addition, a suction filter 44 is provided between the chemical liquid tank 5 and the pump 8 in the low-pressure water absorption path 35, and a flow rate in the water absorption path is detected between the suction filter 44 and the pump 8. A two-flow sensor 45 is provided.

  In the riding type control machine configured as described above, a rear spray device 50 is provided as shown in FIG. The rear spraying device 50 is configured to be rotatable in the front-rear direction with a rotation fulcrum 52 as a fulcrum with respect to the support 51 at the rear of the vehicle body 1. The rotation in the front-rear direction is configured to operate with a hydraulic cylinder 54. Further, the left and right nozzle portions 53, 53 of the rear spray device 50 are configured to be located behind the left and right rear wheels 4, 4.

  The left and right nozzles 53 and 53 are supported by support portions 57 and 57, respectively. Further, since the support portions 57 and 57 are connected by a connecting plate 58, the hydraulic cylinder 54 is provided only on the left side. . Of course, it may be provided on the right side.

As described above, the nozzles 53 of the left and right rear spraying devices 50 are configured to be movable back and forth with a single hydraulic cylinder 54, so that the configuration is inexpensive and simple.
Further, since the nozzles 53 of the left and right rear spraying devices 50 are positioned on the extension line of the treads of the rear wheels 4 and 4, the interference between the crop and the nozzles 53 can be prevented. The same applies to the hydraulic cylinder 54. Since the configuration is located on the extension line of the rear wheel 4 (left side), it is possible to prevent interference between the hydraulic cylinder 54 and the crop.

  As shown in FIGS. 3 and 5, the flow of the chemical liquid to the rear spray device 50 is provided with a branch fitting 55 in the middle of the pipe D2 from the spray cock C2 to the center boom 9a. Is connected to the rear spraying device 50 via A cock 56 is provided in the middle of the pipe D4.

  About the said rear part spraying device 50, it aims at spraying sufficient chemical | medical solution also to the part after the left and right rear wheels 4 and 4 (right and left front wheels 3 and 3) pass, and it seems that a control effect is acquired favorably. become.

  As shown in FIG. 1, the rear spraying device 50 is configured to spray when the nozzle 53 is close to the rear wheel 4 and not spray when the nozzle 53 is away from the rear wheel 4. . Specifically, as shown in FIG. 5, a guide plate 59 is provided on the support portion 57, and the guide plate 59 is connected to a cock 56.

  That is, the guide plate 59 is configured to close the cock 56 when the hydraulic cylinder 54 extends and the nozzle 53 moves away from the rear wheel 4. Further, the guide plate 59 is configured to open the cock 56 when the hydraulic cylinder 54 is reduced and the nozzle 53 approaches the rear wheel 4.

  Further, with respect to the spraying from the rear spraying device 50, the spraying is automatically turned on and off in conjunction with the front / rear direction movement of the rear spraying device 50, so that the operability is improved. Further, since the pump 8 is always driven during the operation, the upstream side of the cock 56 has a high pressure (30 kg / cm @ 2). For this reason, when the rear spraying device 50 approaches the rear wheel 4 and sprays from the nozzle 53, the high-pressure chemical solution is sprayed at once, and the occurrence of a non-spraying region can be prevented. It is good also as a structure electrically performed by the control valve 64 shown in FIG.

  FIG. 6 shows the auxiliary transmission lever 60. The auxiliary transmission lever 60 is provided on the side (left side) of the steering handle 7 behind the panel 17. The auxiliary speed change lever 60 is a three-speed change of working speed, neutral and reverse. A position sensor 61 is provided at the base of the auxiliary transmission lever 60. When the position sensor 61 detects the reverse position of the auxiliary transmission lever 61, the control means (CPU) 100 transmits a signal to the solenoid of the hydraulic cylinder 54. Then, the nozzle 53 of the rear spraying device 50 is moved away from the rear wheel 4, that is, the rear side. The spraying from the nozzle 53 is also stopped. FIG. 7 shows a block diagram thereof.

  As a result, operability is improved. In addition, multiple spraying during turning can be prevented, and mud or the like of the rear wheel 4 can be prevented from adhering to the nozzle 53. By providing the reverse at the shift position of the sub-shift lever 61, the forward / reverse operation can be executed quickly.

  Of course, when the auxiliary transmission lever 60 is returned to the working speed, the nozzle 53 of the rear spraying device 50 is moved closer to the rear wheel 4, that is, the front side, so that spraying is resumed. As described above, the nozzle 53 can be moved back and forth and spraying can be performed only by operating the auxiliary transmission lever 61, so that the work efficiency is improved.

  In addition, the riding type control machine of the present embodiment is configured to travel forward and backward with a hydraulic continuously variable transmission (HST), and the HST lever 62 that performs this forward and backward operation is provided near the steering handle 7. It is said. When the HST lever 62 is operated backward, the nozzle 53 of the rear spray device 50 is moved away from the rear wheel 4, that is, the rear side, so that spraying is also stopped. As a result, operability is improved. In addition, multiple spraying during turning can be prevented, and mud or the like of the rear wheel 4 can be prevented from adhering to the nozzle 53.

In this manner, the nozzle 53 can be moved back and forth and spraying can be turned on and off simply by operating the HST lever 62, so that the working efficiency is improved.
Further, when the HST lever 62 is operated forward, the nozzle 53 of the rear spray device 50 is moved to the side approaching the rear wheel 4, that is, the front side, so that spraying is resumed.

  The front side movement (spreading position) of the nozzle 53 of the rear spraying device 50 may be configured such that the sub-transmission lever 60 moves only in the working speed position while the control pump 8 is in a driving state.

  The auxiliary transmission lever 60 may be configured to be capable of shifting to a traveling speed (high speed on the road) in addition to the working speed (low speed). In such a configuration, the nozzle 53 of the rear spray device 50 is not moved forward (spreading position) when the sub-transmission lever 60 is at the traveling speed position even when the control pump 8 is in the driving state. To do.

  Thereby, it becomes possible to prevent useless spraying of the chemical liquid by controlling the spraying except in the work environment. Further, the nozzle 53 can be prevented from being damaged. In short, the control valve 64 is controlled so that the spraying from the nozzle 53 is automatically performed, so that the nozzle 53 is moved back and forth and the spraying is automatically performed. Will be improved.

  As shown in FIG. 3, another cock 63 is provided on the pipe D <b> 4 toward the rear spray device 50. And it becomes possible to prevent the non-spraying state from occurring by setting the operating condition of the rear spraying device 50 as described above that the cock 63 is open.

  FIG. 8 shows the positions of the pressure sensor 42 and the flow sensor 43 shown in the circuit diagram of FIG. Since the pressure sensor is provided behind the spray cocks C1, C2, and C3 that are manually operated and in the vicinity of the operation panel 20, maintenance work of the pressure sensor 42 is facilitated.

Further, the flow rate sensor 43 is also relatively close to the spray cocks C1, C2, and C3, and is provided at a position that can be recognized when the operation panel 20 is removed, so that maintenance management work is facilitated.
In the configuration of FIG. 3, the pipe D4 to the rear spraying device 50 is configured to branch from the middle of the pipe D2 to the center boom 9a. However, as shown in FIG. 9, the pipe D4 to the rear spraying device 50 is provided. You may comprise so that it may provide independently. In this case, the cock 63 is provided in parallel to the spray cocks C1, C2, and C3. Thereby, the spray cocks C1, C2, C3 and the cock 63 are arranged in a concentrated manner, so that the operability is improved.

FIG. 10 shows a detailed configuration of the panel 17.
A composite indicator 65 that displays speed, engine speed, and usage time is provided in the center, a fuel meter 66 is provided on the left side of the composite indicator 65, and an engine water temperature system 67 is provided on the right side of the composite indicator 65. Reference numeral 69 denotes a warning light group for displaying various warnings. Reference numeral 68 denotes a liquid crystal panel that displays the amount of the chemical liquid discharged from the control pump 8.

  In such a configuration of the panel 17, an indicator lamp that is turned on when the spray cocks C 1, C 2, C 3 and the cock 63 are in an on state is provided above the warning lamp group 69.

  Reference numeral 70 denotes a spray cock C1 entry status indicator lamp, 71 denotes a spray cock C2 entry status indicator lamp, 72 denotes a spray cock C3 entry status indicator lamp, and 73 denotes a spray cock 63 entry status indicator lamp. In this way, the operator can check the state of the spray while looking forward, and thus the traveling operation in the field becomes easy. Conventionally, since the line of sight was removed from the front and the position of the cock was visually recognized, the stability of straight running was particularly lacking, but such a problem can be prevented.

Side view of riding type control machine Front view of passenger type control equipment Sprinkler piping diagram Plan view of control panel Rear sprayer piping diagram Partial side view of the operation unit Block Diagram Cross section of operation panel Plumbing diagram of part of the spreader Top view of meter panel

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle body 3 Front wheel 4 Rear wheel 9 Spreading boom 50 Rear spraying device 53 Rear spraying device nozzle 63 Forward / reverse detection means (HST lever)

Claims (2)

  A self-propelled control machine having a spreading boom (9) at the front of the vehicle body (1) and capable of traveling on the left and right front wheels (3, 3) and the left and right rear wheels (4, 4). An apparatus (50) is provided, and left and right nozzles (53, 53) of the rear spraying device (50) are arranged behind the left and right rear wheels (4, 4), and the rear spraying device (50) is The nozzles (53, 53) are configured to approach the left and right rear wheels (4, 4), and the left and right nozzles (53, 53) are separated from the left and right rear wheels (4, 4) when the rear spraying device (50) is not in operation. A self-propelled control machine characterized by being configured as described above.   The self-propelled type according to claim 1, wherein the non-working state and the working state of the rear spraying device (50) are detected by the forward / reverse detection means (62) of the vehicle body (1). Control machine.

Images