JP6821123B2 - Pest control vehicle - Google Patents

Description

The present invention relates to a control work vehicle for removing weeds growing in ridges during pest control work for crops vegetated in a field.

There is a mobile agricultural machine described in Patent Document 1 as a control work vehicle that performs medium cultivation weed control at the same time as pest control work.

In this mobile agricultural machine, weeds growing in the ridges are cultivated and weeded by a rotary device installed at the rear of the machine at the same time as the control work of spraying pesticides with the spray booms deployed on the left and right sides of the machine.

Japanese Patent No. 4360200

The above-mentioned mobile agricultural machine is used in a field where crops have grown to some extent, but since weeds are also growing along with the crops, the purpose is to control weeds at the same time as controlling pests of the crops.

However, short weeds can be removed by scraping with a rotary device, but long-grown weeds are entangled with wheels and rotary devices, so it is necessary to interrupt the control work and remove the entangled weeds, which is troublesome.

An object of the present invention is a control work vehicle capable of effectively weeding weeds growing in ridges at the same time as pest control work without getting entangled with wheels or a rotary device in view of such problems of the conventional control work vehicle. Is to provide.

The above-mentioned conventional problems are solved by the following technical means.

According to the first aspect of the present invention, the left side boom 11b and the right side boom 11c are laterally arranged with respect to the central boom 11a provided at the front portion of the traveling chassis 2 traveling in the ridges on the left and right front wheels 3 and 3 and the left and right rear wheels 4 and 4. In a pest control work vehicle in which a working machine (27) is provided at the rear of the rear wheels 4 and 4, the chemicals are sprayed from the spray nozzles 14, ... The pest control work vehicle is provided with a raising device 50 for raising weeds and a cutting edge 58 for cutting the weeds raised by the raising device 50.

The control work vehicle according to claim 1, wherein a raising belt 56 provided with a transport lug 55 that engages with weeds is rotated upward to form the raising device 50. To do.

2. The invention of claim 3 is characterized in that the raising frame 51 provided with the raising belt 56 is provided with a cutting edge 58 intersecting the circumferential locus in a side view of the raising belt 56. It shall be the control work vehicle described in.

According to the invention of claim 1, during the control work in which the left side boom 11b and the right side boom 11c are laterally deployed with respect to the central boom 11a to run the traveling chassis 2 and the pesticide is sprayed from the spray nozzle 14. Since the raising device 50 causes long weeds growing in the ridges and cuts a low ground height position with the cutting blade 58, the weeds do not get entangled with the front wheels 3 and the rear wheels 4, and the rear working machine (cultural rotary 27). ) Is used for weeding, so long weeds can be effectively weeded.

According to the invention of claim 2, in addition to the effect of claim 1, weeds are caused by the transport lug 55 of the raising belt 56, but even if the transport lug 55 hits the crop, it is damaged. Weeds are effectively raised and cut short by the cutting edge 58.

According to the third aspect of the present invention, in addition to the effect of the second aspect, the cutting edge 58 can be easily replaced by a simple configuration in which the cutting edge 58 is attached to the raising frame 51.

Overall side view of the pest control vehicle. Overall plan view of the pest control vehicle. Rear view of the pest control vehicle. Side view of the culti rotary. Perspective view of the raising device. Overall plan view of the pest control vehicle.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. In the description of the embodiment, the left and right directions are referred to as left and right, respectively, the forward direction is referred to as forward, and the reverse direction is referred to as backward toward the forward direction of the aircraft, but the configuration of the present invention is not limited.

1 to 3 show an overall view of the control work vehicle 1 according to the present invention. The configuration of the control work vehicle 1 will be described below.

Front wheels 3, 3 and rear wheels 4, 4 having the same diameter are provided on the front, rear, left and right sides of the traveling chassis 2 of the control work vehicle 1, and a control spraying device A is provided on the rear portion of the traveling chassis 2. An engine (not shown) is mounted above the left and right front wheels 3 and 3, and the periphery of the engine is covered with a bonnet 6. Seats 7 are provided in the front and rear middle portions of the traveling chassis 2, and steering handles 8 are provided so as to be located in front of the seats 7. When the steering handles 8 are steered to the left and right, the left and right front wheels 3, 3 and the rear This is a four-wheel steering configuration in which the wheels 4 and 4 are steered at the same time. Further, around the seat 7 at the rear of the traveling chassis 2, chemical liquid tanks 9 for storing chemicals are detachably provided so as to surround the left and right sides and the rear side thereof.

Further, traveling power is transmitted from the output shaft of the engine to the front wheels 3 and 3 and the rear wheels 4 and 4 via the traveling transmission device (not shown), and the chemical spray is sprayed from the output shaft of the engine via the working machine transmission device. The working power is transmitted to the pump for driving and the PTO shaft for driving the rear working machine.

Further, the lower water supply port of the chemical solution tank 9 is communicated with a pump, and the chemical solution discharged from the pump is sent to the pressure regulator via a pressure pipe, the pressure is adjusted by the pressure regulator, and the chemical solution discharge port. It is branched into a plurality of high-pressure hoses and further fed to the central boom 11a, the left side boom 11b, the right side boom 11c and the rear boom 11d via the intermediate hose 38, and the chemical solution is sprayed from the spray nozzles 14, ... Of these booms. It is a configuration to be done. The central boom 11a is removed and attached to the rear part of the vehicle body as described later.

Further, a boom support member 15 is movably attached to the front of the traveling chassis 2 by the upper links 18a and 18a and the lower links 18b and 18b, and the entire structure is moved up and down by the elevating cylinders 19 and 19. .. Further, the left and right middle portions of the frame portion of the central boom 11a are supported by the boom support member 15 so that the rolling can be adjusted around the axial center in the front-rear direction, and the horizontal cylinder 20 adjusts the rolling.

Further, the base ends of the left side boom 11b and the right side boom 11c are pivotally supported around the pins in the lateral direction at both ends of the frame portion of the central boom 11a attached to the boom support member 15, and the left and right elevating cylinders 16 , 16 are configured to move the left side boom 11b and the right side boom 11c up and down. Further, the frame bases of the left side boom 11b and the right side boom 11c are pivotally supported around the pins in the vertical direction, and the left side boom 11b and the right side boom 11c can be opened and closed and rotated in the inward and outward directions by the opening and closing cylinders 17 and 17. doing.

Then, by rotating the left side boom 11b and the right side boom 11c up and down and opening and closing in the inward and outward directions, the storage posture is set to be substantially along the side surface of the machine body, and the spraying work posture is set to project to both the left and right sides. Can be done.

Further, the left side boom 11b and the right side boom 11c move in the longitudinal direction to the left and right side frames 39, the fixed boom 40 attached to the left and right side frames 39 in a fixed state, for example, and the outside of the left and right side frames 39. It is composed of a movable boom 41 that is freely attached, and the movable boom 41 can be expanded and contracted by the telescopic motors 21 and 21 so that it can be changed between a short spraying state and a long spraying state.

The tank shape of the chemical solution tank 9 is a rear portion connecting the left and right portions 9a and 9b located on the left and right sides and the rear side of the seat 7 and the rear portions of the left and right portions 9a and 9b in a plan view. It is configured with a predetermined width and height by 9c. Then, a recess 9d cut in the vertical direction is formed in the rear central portion of the rear portion 9c, left and right supply ports 22 and 22 are provided on both left and right sides of the chemical solution tank 9, and the left and right supply ports 22 and 22 are left and right opening and closing lids. It is configured to open and close by 23 and 23.

Further, the front end portion of the rear elevating link 25 bent in a V shape in a side view is pin-connected to the rear portion of the traveling chassis 2, and the rear end portion of the rear elevating cylinder (not shown) is pinned to the rear portion of the traveling chassis 2. The front end of the rear elevating cylinder is pin-connected to the middle part of the rear elevating link 25, and the culti rotary 27 connected to the rear part of the rear elevating link 25 is configured to move up and down. A PTO shaft is provided at the rear of the traveling chassis 2, and power is transmitted from the coaxial to the culti rotary 27 via a refractable transmission shaft.

Further, as shown in FIG. 4, the culti rotary 27 is, for example, a triple tillage work machine for weeding leafy vegetable crops and gathering soil, and is configured as follows.

A transmission box 28 for transmitting power from the PTO axis is provided in the middle portion in the left-right direction, a cult support frame 29 is provided in the rear portion of the transmission box 28 along the left-right direction, and a center is provided in the center portion of the cult support frame 29. The rotary 30 is attached, and the left and right side rotary 31 and 32 are attached to the left and right side portions of the cult support frame 29 so as to be movable in the left-right direction.

The center rotary 30 and the left and right side rotary 31, 32 are the rotary transmission case 33, the tilling device 34 provided at the lower part of the rotary transmission case 33, the tilling frame 35 attached to the middle part of the rotary transmission case 33, and the tilling claw. It is composed of a tillage cover 36 or the like that covers 34.

Further, the left and right work transmission shafts are extended from the transmission box 28 so as to be located in the cult support frame 29, and the left and right work transmission shafts, the center rotary 30, and the rotary transmission cases 33, 33 of the left and right side rotary 31, 32 are extended. Is spline-fitted with the input gears of the above, and power is transmitted from the left and right work transmission shafts to the rotary transmission case 33 to drive the center rotary 30 and the tilling claws 34, ... Of the left and right side rotary 31, 32. There is.

Therefore, while the chemical spraying device A is used to spray the chemicals with the chemical tank 9 attached, it is possible to perform the combined work of the medium cultivation weeding work by the culti rotary 27, and the work efficiency can be improved. Further, since the recess 9d cut in the vertical direction is provided in the central portion on the rear side of the chemical solution tank 9, the rear elevating link 25 and the culti rotor 27 can be inserted into the recess 9d to ascend, and the lift of the cult rotor 27 can be lifted. It is possible to secure the amount and prevent damage to the crop during turning. Further, the operator can improve the rearward view through the recess 9d of the chemical solution tank 9, and can easily confirm the work of the culti rotary 27.

Next, the rear boom 11d will be described with reference to FIG.

A vertical support cylinder 42 is pivotally supported by left and right pins 43 and 43 at the rear portion of the tilling frame 35 in the center rotary 30, and a vertical stay 44 is inserted and supported in the support cylinder 42, and the vertical stay 44 is inserted and supported. A mounting stay 45 in the front-rear direction parallel to the ground is fixed to the upper end portion of the above with bolts and nuts. The mounting portion of the rear boom 11d is inserted into the rear end portion of the mounting stay 45 from the rear side and mounted so as to be adjustable in the front-rear direction with bolts and nuts. The rear boom 11d is configured to have substantially the same width as the culti rotary 27 so that the chemical can be sprayed over the entire width from the rear boom 11d after the culti rotary 27 is cultivated. The rear hitch 46 of the culti rotary 27 is provided in the center of the left and right, and the rear hitch 46 and the mounting stay 45 are connected by a rod 47, and the rear hitch 46 is vertically adjustable by the vertical adjusting device 48.

Therefore, after the middle cultivation work by the culti rotary 27, the combined work of spraying the herbicide from the rear boom 11d can be performed, and the herbicide can be deeply penetrated into the soil to enhance the herbicide effect. Further, the rear boom 11d can be adjusted in the vertical direction and the front-back direction with respect to the culti rotor 27, and the rear boom 11d can be adjusted according to the growth of the crop to enhance the spraying effect of the chemicals.

Next, using FIG. 5 and the like, a raising device 50 for raising weeds vegetated in the ridges and a cutting edge 58 attached to the raising device 50 provided at the front portions of the left and right front wheels 3 and 3. Etc. will be explained. FIG. 5 is a perspective view of the raising device 50, the cutting edge 58, and the like arranged on the front side of the front wheel 3 on the left side. The raising device 50 and the cutting edge 58 and the like arranged on the front side of the front wheel 3 on the right side have the same symmetrical shape as the raising device 50 and the cutting edge 58 and the like shown in FIG. ..

Left and right elevating arms 60 and 61 are attached to the boom support member 15 or the central boom 11a, and raising support arms 62 are attached to the left and right elevating arms 60 and 61, and left and right via the left and right raising frames 51. The structure is such that the raising device 50 is attached (see FIG. 2). The left and right raising devices 50 in FIG. 2 have a wide width and are equipped with a motor having a large output, and are used when there is a lot of grass.

In this way, since the left and right raising devices 50 are attached to the boom support member 15 or the central boom 11a, the elevating cylinders 19 and 19 together with the central boom 11a, the left side boom 11b, and the right side boom 11c are used. It is configured to go up and down.

As shown in FIG. 5, the raising frame 51 is a plate-shaped frame that sandwiches and supports the upper pulley 53 and the lower pulley 52, and is made of rubber having a transport lug 55 whose tip is bent upward in a side view on the ascending side. The raising belt 56 is wound around the upper pulley 53 and the lower pulley 52. The lower pulley 52 is pulled up by a tension spring 63 provided on the raising frame 51 to tension the belt 56.

A side cover 57 that surrounds the rear side of the belt 56 is attached to the side surface of the raising frame 51 so that the transport lug 55 protrudes outward in the ascending process and is pulled inward near the upper end. A blade case 59 is attached to the lower part of the side cover 57 so that the cutting blade 58 can be raised and pulled out to the movement locus of the belt 56, and the left and right side covers 57 are attached to the upper end connecting shaft 69 and the upper pulley 53 and the scraper connecting material 72. It is connected by. The scraper connecting member 72 prevents weeds from wrapping around the upper pulley 53. When the cutting edge 58 is worn, the cutting edge is broken and removed, and the knob bolt 71 is loosened so that a new cutting edge can be pulled out and updated. When the cutting edge 58 is not used, it may be stored along the side cover 57.

The upper pulley 53 is driven by a transmission motor 64 that is driven by a hydraulic or electric drive attached to the raising frame 51, and the raising speed of the raising belt 56 is set by the rear wheel 4 according to the amount of long weeds growing in the ridges. Shift control is performed by synchronizing with the running speed or accelerating or decelerating. If there are no long weeds, the drive of the speed change motor 64 may be stopped. Basically, the speed change motor 64 is accelerated when the traveling speed is increased, and the speed change motor 64 is decelerated when the traveling speed is decreased. However, for example, when there is a lot of grass, the traveling speed is decreased and the speed change motor 64 is increased. In some cases. In such a case, the speed change motor 64 is decelerated with a manual switch (not shown).

Further, the speed change motor 64 may be configured to drive the lower pulley 52. In the embodiment of FIG. 1, since the speed change motor 64 is configured to drive the lower pulley 52, the speed change motor 64 is attached to the lower part of the raising device 50. Therefore, the transmission motor 64 is configured to be attached to the rear side of the raising device 50. As a result, grass or the like does not directly hit the transmission motor 64, so that the transmission motor 64 can be protected.

The upper part of the raising frame 51 is attached to the raising support arm 62 with a pin insertion type so that the mounting angle can be changed to the left and right, and when the raising frame 51 is tilted to the side, the weed raising width is expanded. The gauge ring 65 is pivotally supported by a compression spring 73 at the lower part of the raising frame 51, and the gauge ring 65 is grounded to flexibly follow the unevenness of the ridge groove. I try to support it.

A lower weed rod 68 and an upper weed rod 67 are provided between the gauge ring 65 and the raising device 50 to prevent weeds from wrapping around the gauge ring 65. Further, it may be composed of a weed cover that spreads backward as used for a combine harvester.

The gauge ring 65 is deflated (with an air filling amount of about 50%) and softened to roll in the ridges so as not to break the ridges, but the gauge ring 65 may be a solid one that does not use air. In this case, the gauge ring is made of a relatively soft material such as soft rubber. Further, when the raising frame 51 is removed from the raising support arm 62, the gauge wheel 65 becomes a carrying wheel. As shown in FIG. 2, since the left and right raising devices 50 and 50 are arranged in a "H" shape, when the gauge wheel 65 is attached to the raising device 50, it is the same as the front and rear wheels 3 and 4. It is necessary to install it in the direction of rotation.

The raising frame 51 may be configured such that the elevating arms 60 and 61 alone are raised and lowered by a different hydraulic cylinder from the hydraulic cylinders 19 and 19.

The configuration shown in FIG. 6 will be described. Only the central boom 11a and the left and right raising devices 50 and 50 are raised and lowered by the raising and lowering cylinders 19 and 19. The left side boom 11b and the right side boom 11c are configured to move up and down by the left and right elevating cylinders 16 and 16 and to rotate by the left and right swivel motors 17a and 17a.

The pulling support arms 62 that support the left and right raising devices 50 and 50 are configured to be shared by the central boom 11a. That is, the left and right raising devices 50 and 50 are provided at both left and right ends of the central boom 11a, and the left and right raising devices 50 and 50 are rotatably attached to the central boom 11a. Since the left and right raising devices 50 and 50 can be rotated left and right by the left and right cylinders 74 and 74, the action position of the transport lug 55 can be changed depending on the state of the grass lying down, and the raising performance is improved. In this case, the gauge wheel 65 is not attached, but the gauge wheel may be configured to be rotatable in the left-right direction by a motor or the like.

The speed change motor 64 is configured to drive the upper pulley 53. As a result, the speed change motor 64 is arranged at a position higher than the height of the grass, so that there is no problem even if the speed change motor 64 is raised and attached to the front side of the device 50. By raising the speed change motor 64 and attaching it to the front side of the device 50, the maintainability of the speed change motor 64 is improved.

2 Driving chassis 3 Front wheels 4 Rear wheels 11a Central boom 11b Left side boom 11c Right side boom 14 Spray nozzle 27 Working machine (cultural rotary)
50 Raising device 64 Pulling starting power source (transmission motor)

Claims (3)

Left side boom (11b) and right side boom with respect to the central boom (11a) provided at the front of the traveling chassis (2) traveling in the furrow with the left and right front wheels (3,3) and the left and right rear wheels (4,4). In a pest control work vehicle in which (11c) is expanded laterally, chemicals are sprayed from spray nozzles (14, ...), And a work machine (27) is provided at the rear of the rear wheels (4, 4).
A raising device (50) that raises weeds that grow in the ridges at the front of the left and right front wheels (3, 3), and
A pest control work vehicle provided with a cutting edge (58) for cutting weeds raised by the raising device (50). The control work vehicle according to claim 1, wherein a raising belt (56) provided with a transport lug (55) that engages with weeds is rotated upward to form the raising device (50). A claim characterized in that the raising frame (51) provided with the raising belt (56) is provided with the cutting edge (58) intersecting the orbital locus in a side view of the raising belt (56). The control work vehicle according to item 2.

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