JP2022158132A - Agricultural implement - Google Patents

Abstract

To perform a cleaning operation with a simpler and efficient constitution.SOLUTION: An agricultural implement includes: a travel device 12 having front wheels 12A and rear wheels 12B; one or a plurality of front wheel nozzles 30 provided respectively at the front wheels 12A, for injecting washing material to the front wheels 12A; and a plurality of rear wheel nozzles 30 provided respectively at the rear wheels 12B, for injecting washing material to the rear wheels 12B. The rear wheel nozzles 30 provided at one rear wheel 12B are more than the front wheel nozzles 30 provided at one front wheel 12A.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to an agricultural work machine that travels in a field for work.

The agricultural implement has wheels and travels in the field. Fields are often made of mud containing water, and mud adheres to the wheels of the agricultural implement as it travels through the field. When the agricultural implement moves between fields with mud adhering to the wheels, the mud falls on the road. Therefore, the wheels and the like of the agricultural implement are washed after it travels for work.

For example, when working in another field after traveling in one field, it is necessary to wash the agricultural implement before moving between fields. In addition, since the cleaning work after such work travel takes a lot of man-hours, it takes time to move between fields, and the work efficiency when working on a plurality of fields deteriorates.

In order to reduce the cleaning work after running, the rice transplanter shown in Patent Document 1 is provided with a shower nozzle near the seedling support member to which mud easily adheres, and jets water from the shower nozzle to improve the efficiency of the cleaning work. are improving.

JP 2017-112878 A

However, there is a demand for a simpler and more efficient cleaning operation.

An object of the present invention is to perform cleaning work with a simpler and more efficient configuration.

In order to achieve the above object, an agricultural implement according to one embodiment of the present invention includes a traveling device having front wheels and rear wheels, and a cleaning material that is sprayed onto the front wheels. A front wheel nozzle, and a plurality of rear wheel nozzles for spraying the cleaning material to the rear wheel, each of which is provided for each of the rear wheels, wherein the rear wheel nozzle provided for one rear wheel The number is greater than the number of front wheel injection nozzles provided for one front wheel.

In agricultural implements, the rear wheels are larger than the front wheels, and the rear wheels often have more mud than the front wheels. Therefore, according to the above configuration, the wheels can be washed with high accuracy.

Also, the front wheel and the rear wheel have lugs, the lug of the rear wheel being larger than the lug of the front wheel, and viewed from the side with respect to an imaginary line extending radially from the center of the rear wheel. It may be inclined.

Wheels of agricultural implements are sometimes provided with lugs so that they can easily obtain propulsion even in muddy fields. Also, lugs are provided only on the rear wheels, or larger lugs are provided on the rear wheels than on the front wheels. By providing more injection nozzles for the rear wheels with larger lugs, the wheels can be washed with high accuracy.

Further, the front wheel nozzles may be provided in three directions with respect to one front wheel, and the rear wheel nozzles may be provided in five directions with respect to one rear wheel.

With such a configuration, the cleaning material can be sprayed from above and from the left and right sides of each wheel, and the cleaning work can be performed efficiently. In addition, even if the rear wheels are larger than the front wheels and the rear wheels have larger lugs, the cleaning material can be sprayed from multiple directions to the rear wheels, and the cleaning work can be performed with higher accuracy. can.

Further, one of the front wheel nozzles sprays the cleaning product onto the tread surface of the front wheel, one of the front wheel nozzles sprays the cleaning product onto the front wheel from the lateral outer side in the axial direction of the front wheel, One of the front wheel nozzles sprays the cleaning material onto the front wheel from the lateral inner side of the front wheel in the axle direction, and at least one of the rear wheel nozzles sprays the cleaning material onto the tread surface of the rear wheel. , at least one of the rear wheel nozzles sprays the cleaning material from the lateral outer side of the rear wheel in the axle direction, and at least one of the rear wheel nozzles sprays the cleaning material laterally in the axle direction of the rear wheel; The cleaning material may be sprayed onto the rear wheel from the inside.

With such a configuration, it is possible to evenly spray the object to be cleaned onto the positions where mud or the like adheres to each wheel, so that the cleaning work can be performed with higher accuracy.

Further, the rear wheel nozzle for spraying the cleaning product onto the tread surface of the rear wheel has a wider range than the rear wheel nozzle for spraying the cleaning product from the lateral outer side or the lateral inner side in the axle direction of the rear wheel. The rear wheel nozzle for injecting the cleaning material from the lateral outer side or the lateral inner side in the axle direction of the rear wheel is the rear wheel nozzle for injecting the cleaning material onto the tread surface of the rear wheel. The cleaning material may be sprayed at high pressure from a nozzle.

Since the tread surface of the wheel is wide in the width direction, the cleaning work can be efficiently performed by spraying the cleaning material over a wide range. In addition, since the wheels are provided with grooves and lugs, it is easy to remove mud clogged in the grooves and lugs by injecting the cleaning material at high pressure.

The front wheel nozzle for injecting the cleaning material from the lateral outer side or the lateral inner side of the front wheel in the axial direction injects the cleaning material to the lug, and the cleaning material is ejected from the lateral outer side or the lateral inner side of the rear wheel in the axial direction. The rear wheel nozzle for injecting the cleaning material may inject the cleaning material to the lug.

With such a configuration, mud or the like clogging the lug can be easily removed.

Further, the front wheel nozzle for spraying the cleaning product onto the tread surface of the front wheel sprays the cleaning product in a tangential direction of the front wheel, and the rear wheel nozzle sprays the cleaning product onto the tread surface of the rear wheel. A nozzle may spray the cleaning material in a tangential direction to the rear wheel.

With such a configuration, mud adhering to the surface of the wheel can be easily washed off.

It is a left view of the rice transplanter which can run automatically. It is a top view of the rice transplanter which can run automatically. It is a schematic right view of the rice transplanter which can run automatically. It is a schematic diagram explaining an example of composition of a transmission mechanism for pumps. FIG. 4 is a schematic rear view showing an arrangement example of front wheel nozzles; FIG. 4 is a schematic rear view showing an arrangement example of nozzles for rear wheels;

Hereinafter, as an agricultural working machine of the present invention, a rice transplanter that travels in a field will be described as an example.

Here, for ease of understanding, in the present embodiment, unless otherwise specified, "front" (the direction of arrow F shown in FIG. 1) means forward in the longitudinal direction of the aircraft (running direction). "Rear" (the direction of arrow B shown in FIG. 1) means the rear in the longitudinal direction (running direction) of the aircraft. In addition, the left-right direction or the lateral direction is the machine transverse direction (body width direction) orthogonal to the machine body longitudinal direction, that is, "left" (the direction of arrow L shown in FIG. 2) and "right" (the direction of arrow R shown in FIG. 2). direction) shall mean the left and right directions of the aircraft, respectively.

[Overall structure]
As shown in FIGS. 1 to 3, the rice transplanter includes a ride-on, four-wheel-drive body 1. As shown in FIGS. The body 1 includes a parallel quadruple link type link mechanism 13 connected to the rear part of the body 1 so as to be able to swing up and down, a hydraulic lifting link 13a that drives the link mechanism 13 to swing, and a rear end region of the link mechanism 13. a seedling planting device 3 that is rollably connected to the machine body 1;

The machine body 1 includes wheels 12 (corresponding to a "traveling device"), an engine 2 (corresponding to a "driving source"), and a hydraulic continuously variable transmission 9 as a mechanism for traveling. The continuously variable transmission 9 is, for example, an HST (Hydro-Static Transmission), and adjusts the angles of the motor swash plate and the pump swash plate to change the power output from the engine 2 (rotational number). The wheels 12 include steerable left and right front wheels 12A and non-steerable left and right rear wheels 12B. The engine 2 and the continuously variable transmission 9 are mounted on the front portion of the airframe 1 .

The power output from the engine 2 is transmitted to the continuously variable transmission 9 via a traveling transmission mechanism, and is also transmitted from the continuously variable transmission 9 to the front wheels 12A, the rear wheels 12B, a working device, and the like. A traveling transmission mechanism includes a pulley 2A, a pulley 9A, and a belt 2B. The pulley 2A is provided on an output shaft 2D (see FIG. 4), which is the drive shaft of the engine 2, and the pulley 9A is provided on the input shaft 9B (see FIG. 4) of the continuously variable transmission 9. As shown in FIG. Belt 2B is wound around pulley 2A and pulley 9A, and power output from engine 2 is transmitted to continuously variable transmission 9 by belt 2B.

Since the rice transplanter works in a muddy field, deep grooves are provided on the tread surface 12C, which is the contact surface of the front wheels 12A and the rear wheels 12B. Also, at least the rear wheel 12B is provided with a lug 12D. The lugs 12D are provided so as to protrude outward on the left and right sides of the rear wheel 12B, and the lugs 12D can improve the propulsion force by scratching the surface layer of the field. The lug 12D is inclined in a side view with respect to an imaginary line extending radially from the center of the wheel 12 (rear wheel 12B). For example, the lug 12D slopes toward the rear of the fuselage 1 . Further, when both the front wheel 12A and the rear wheel 12B are provided with lugs 12D, the lug 12D provided on the rear wheel 12B is larger than the lug 12D provided on the front wheel 12A.

The seedling planting device 3 is configured in an eight-row planting format, for example. The seedling planting device 3 includes a seedling platform 21, a planting mechanism 22 for eight rows, and the like. This seedling planting device 3 can be changed to a form of two-row planting, four-row planting, six-row planting, etc. by controlling each row clutch (not shown).

The seedling mounting table 21 is a pedestal on which 8 rows of mat-like seedlings are mounted. The seedling mounting table 21 reciprocates in the left-right direction with a constant stroke corresponding to the width of the mat-like seedling, and every time the seedling mounting table 21 reaches the left and right stroke ends, each mat-like seedling on the seedling mounting table 21 is moved. The seedlings are longitudinally fed toward the lower end of the seedling placing table 21 at a predetermined pitch. The eight planting mechanisms 22 are of a rotary type and are arranged in the left-right direction at regular intervals corresponding to the intervals between the planting rows. Each planting mechanism 22 receives power from the engine 2 when a planting clutch (not shown) shifts to a transmission state, and the lower end of each mat-like seedling placed on the seedling placement table 21 A single seedling (also referred to as planting seedling) is cut and planted in the muddy soil after leveling. As a result, when the seedling planting device 3 is in operation, the seedlings can be taken out from the mat-shaped seedlings placed on the seedling placement table 21 and planted in the mud part of the paddy field.

As shown in FIGS. 1 to 3, the fertilizing device 4 (supplying device) includes a hopper 25 (storage unit) that stores granular or powdery fertilizer (medicine and other agricultural materials), and feeds out the fertilizer from the hopper 25. It has a delivery mechanism 26 and a fertilizing hose 28 (hose) that conveys the fertilizer delivered by the delivery mechanism 26 and discharges the fertilizer to the field. Fertilizer stored in the hopper 25 is delivered by a delivery mechanism 26 by a predetermined amount and sent to the fertilizing hose 28, conveyed through the fertilizing hose 28 by the carrying wind of the blower 27, and discharged from the ditching device 29 to the field. be. Thus, the fertilizing device 4 supplies fertilizer to the field.

A grooving machine 29 is provided on the grading float 15 . Each grooving device 29 ascends and descends together with each leveling float 15, forms a fertilizing groove in the muddy part of the paddy field, and guides the fertilizer into the fertilizing groove during work travel in which each leveling float 15 touches the ground.

As shown in FIGS. 1 to 3, the airframe 1 has an operating section 14 in its rear area. The driving unit 14 includes a steering wheel 10 for steering the front wheels, a main gear shift lever 7A that adjusts the vehicle speed by performing a gear shift operation of the continuously variable transmission 9, an auxiliary gear shift lever 7B that enables gear shift operation of the sub transmission, and a seedling. A work operation lever 11 that enables lifting operation of the planting device 3 and switching of the operating state, etc., and a touch panel that displays (notifies) various information and notifies (outputs) to the operator, and receives input of various information. and an information terminal 5, and a driver's seat 16 for an operator (driver/worker). The sub-transmission lever 7B is used to switch the traveling vehicle speed between a work speed during work and a movement speed during movement. For example, movement between fields is performed at the movement speed, and planting work and the like are performed at the work speed. Further, a preliminary seedling storage device 17A for storing preliminary seedlings is supported by a preliminary seedling support frame 17 in front of the operating section 14. As shown in FIG. 3, the spare seedling storage device 17A and part of the spare seedling support frame 17 are omitted.

The steering wheel 10 is connected to the front wheels 12A via a steering mechanism (not shown), and the steering angle of the front wheels 12A is adjusted by rotating the steering wheel 10. FIG. In the operating section 14, a boarding step 14A having a narrower lateral width than the fertilizing device 4 is provided behind the bonnet 6 covering the engine 2. - 特許庁Further, on the left and right lateral outsides of the bonnet 6, boarding steps 14B are provided at the same height as the boarding steps 14A and connected to the boarding steps 14A to enable boarding and alighting from the front end of the body 1. - 特許庁

[Washing mechanism]
Since the rice transplanter runs in mud in a field, mud adheres to the wheels 12, the planting mechanism 22, and the lower part of the body 1. - 特許庁Therefore, the rice transplanter has a cleaning mechanism that cleans a predetermined portion of the machine body 1 . The cleaning mechanism will be described below with reference to FIGS. 1 to 4. FIG.

The washing mechanism includes a washing device 30 , a tank 31 and a car washing pump 32 . The cleaning device 30 is provided at an arbitrary position on the body 1, and cleans by injecting a cleaning liquid such as water to a cleaning target location. The washing device 30 and the car wash pump 32 are connected by a hose 33, and the car wash pump 32 and the tank 31 are connected by a hose 34. - 特許庁The tank 31 stores the cleaning liquid jetted from the cleaning device 30 . The car wash pump 32 sucks the cleaning liquid stored in the tank 31 through the hose 34 and supplies it to the cleaning device 30 through the hose 33 .

The rice transplanter can efficiently wash the machine body 1 by including the washing mechanism in which the washing device 30 that injects the washing liquid to the washing target location where mud easily adheres is arranged. Further, since the cleaning liquid stored in the tank 31 is sucked by the car wash pump 32 and used, the machine body 1 can be easily cleaned even in a place where there is no facility such as water supply. Further, since the high-pressure cleaning liquid can be supplied from the car wash pump 32 to the cleaning device 30, the body 1 can be cleaned efficiently.

[Tank and car wash pump]
The tank 31 is installed on the step 14B on the left side of the bonnet 6 . The car wash pump 32 is installed on the right side of the bonnet 6 on the step 14B. The hose 34 is arranged so as to bypass the front of the bonnet 6 and connect the tank 31 and the car wash pump 32 .

The tank 31 has an opening/closing lid 31a on the top thereof, and a cleaning liquid such as water is supplied to the tank 31 with the lid 31a opened. The hose 34 is connected to the bottom of the tank 31 , and the cleaning liquid in the tank 31 is sucked into the car wash pump 32 by driving the car wash pump 32 .

As shown in FIG. 4 , the car wash pump 32 is driven by the power of the engine 2 . Power transmission from the engine 2 to the car wash pump 32 is performed by a pump transmission mechanism 37 . The pump transmission mechanism 37 includes a pulley 2C, a pulley 32A, and a rubber belt 32B. The pulley 2C is provided on the output shaft 2D of the engine 2, and the pulley 32A is provided on the input shaft 32D of the car wash pump 32. As shown in FIG. The output shaft 2D of the engine 2 is provided in the left-right direction of the machine body 1, the pulley 2A of the traveling transmission mechanism is connected to the left end, and the pulley 2C is connected to the right end. In other words, the traveling transmission mechanism and the pump transmission mechanism 37 are distributed to the left and right with the engine 2 interposed therebetween. The rubber belt 32B is wound around the pulley 2C and the pulley 32A, and the power output from the engine 2 is transmitted to the car wash pump 32 by the rubber belt 32B.

Furthermore, as shown in FIG. 2, a lever 32C is provided for switching the tension of the rubber belt 32B. One end of the lever 32C is supported by the body frame 1E, and the other end swings around the supporting portion as an axis. When the lever 32C swings and presses the rubber belt 32B, the tension of the rubber belt 32B is increased, power is transmitted from the pulley 2C to the pulley 32A, and the car wash pump 32 is driven. When the lever 32C swings and separates from the rubber belt 32B, the tension of the rubber belt 32B is reduced, power is not transmitted from the pulley 2C to the pulley 32A, and the operation of the car wash pump 32 is stopped.

An operation tool (not shown) for operating the swing of the lever 32C is arranged at an arbitrary position such as near the driving unit 14 or the car wash pump 32. As shown in FIG. When the washing work is not performed, the lever 32C is operated to reduce the tension of the rubber belt 32B and stop the operation of the car wash pump 32. When performing cleaning work, the lever 32C is operated to increase the tension of the rubber belt 32B. As a result, the power output from the engine 2 is transmitted from the pulley 2C to the pulley 32A, the car wash pump 32 is driven, and the washing device 30 injects the washing liquid. By jetting the cleaning liquid from the cleaning device 30, the cleaning target portion of the machine body 1 is cleaned.

In this way, by distributing the tank 31 and the car wash pump 32 to both the left and right sides of the hood 6 on the step 14B, the tank 31 and the car wash pump 32 are not newly arranged. Also, the tank 31 and the car wash pump 32 can be arranged with good arrangement efficiency.

Further, by providing the pump transmission mechanism 37 independently of the traveling transmission mechanism, the machine body 1 can be easily washed even when the machine body 1 is stopped. Further, by providing the pump transmission mechanism 37 on the opposite side of the output shaft 2D of the engine 2 to the side on which the traveling transmission mechanism is arranged, the pump transmission mechanism 37 can , and the power output from the engine 2 can be transmitted to the car wash pump 32 .

[Washing equipment]
Next, the cleaning device 30 will be described using FIGS. 5 and 6 while referring to FIGS. 1 to 3. FIG.

As shown in FIG. 5, three injection nozzles are provided as a cleaning device 30 to clean the front wheel 12A. The front wheel nozzles 39a, 39b, and 39c, which are injection nozzles, inject wash water stored in the tank 31 when the car wash pump 32 is driven.

The front wheel nozzles 39a, 39b, 39c are supported by a bracket 41 supported by the body frame 1E. The bracket 41 is provided in the lateral direction of the body 1 and is provided above the front wheel 12A. The front wheel nozzle 39a is arranged outside the front wheel 12A of the bracket 41 in plan view, and obliquely sprays the cleaning liquid onto the tread surface 12C of the front wheel 12A or the lateral outer side surface of the front wheel 12A from the laterally outer and upper side of the front wheel 12A. Inject. That is, the front wheel nozzles 39a, 39b, and 39c are provided in three directions with respect to the front wheel 12A.

The front wheel nozzle 39b is arranged at a position overlapping the front wheel 12A of the bracket 41 in plan view, that is, directly above the front wheel 12A, and sprays the cleaning liquid from above the front wheel 12A onto the tread surface 12C of the front wheel 12A.

The front wheel nozzle 39c is arranged inside the front wheel 12A of the bracket 41 in a plan view, and obliquely sprays the cleaning liquid onto the tread surface 12C of the front wheel 12A or the lateral inner side surface of the front wheel 12A from the laterally inner and upper side of the front wheel 12A. do.

By injecting the cleaning liquid from three directions to the front wheel 12A in this way, the mud adhering to the front wheel 12A can be easily removed. Further, mud that has entered deep grooves provided on the tread surface 12C of the front wheel 12A can be easily removed. In addition, since the cleaning liquid is sprayed onto the front wheel 12A at three locations in the left-right direction, the cleaning liquid can be sprayed evenly over the entire front wheel 12A, and the front wheel 12A can be washed more efficiently.

Here, the front wheel nozzle 39b sprays the cleaning liquid radially, and the front wheel nozzles 39a and 39c spray the cleaning liquid over a wide range. Further, the front wheel nozzles 39a and 39c jet the cleaning liquid at a higher pressure than the front wheel nozzle 39b. With such a configuration, while the tread surface 12C of the front wheel 12A is extensively cleaned by the cleaning liquid ejected from the front wheel nozzles 39b, the cleaning liquid ejected from the front wheel nozzles 39a and 39c cleans the grooves and the side surfaces of the front wheel 12A. Firmly adhering mud can be easily removed, and the front wheel 12A can be washed more efficiently.

As shown in FIG. 6, five spray nozzles are provided as the cleaning device 30 to clean the rear wheel 12B. Rear wheel nozzles 43 a , 43 b , 43 c , 43 d , and 43 e , which are injection nozzles, inject wash water stored in tank 31 when car wash pump 32 is driven.

The rear wheel nozzles 43a, 43b, 43c, 43d, and 43e are supported by a bracket 44 supported by the body frame 1E. The bracket 44 is provided in the lateral direction of the body 1 and is provided above the rear wheel 12B.

The rear wheel nozzles 43a and 43b are arranged outside the rear wheel 12B of the bracket 41 in a plan view, and obliquely spray the cleaning liquid onto the lug 12D of the rear wheel 12B from laterally outside and above the rear wheel 12B. The rear wheel nozzle 43a is supported outside the rear wheel nozzle 43b, and sprays the cleaning liquid to the outer portion of the lug 12D.

The rear wheel nozzle 43c is arranged at a position overlapping the rear wheel 12B of the bracket 44 in plan view, that is, directly above the rear wheel 12B, and sprays the cleaning liquid from above the rear wheel 12B onto the tread surface 12C of the rear wheel 12B. .

The rear wheel nozzles 43d and 43e are arranged inside the rear wheel 12B of the bracket 44 in a plan view, and obliquely spray the cleaning liquid onto the lug 12D of the rear wheel 12B from laterally inside and above the rear wheel 12B. The rear wheel nozzle 43e is supported on the inner side of the rear wheel nozzle 43d, and sprays the cleaning liquid onto the inner portion of the lug 12D.

The rear wheel 12B has lugs 12D. Further, the lug 12D is formed so as to protrude largely in the lateral direction of the body 1 from the tread surface 12C of the rear wheel 12B. Therefore, cleaning is performed using more injection nozzles than the front wheel 12A. That is, the rear wheel nozzles 43a, 43b, 43c, 43d, and 43e are provided in five directions with respect to the rear wheel 12B.

As described above, the mud adhering to the rear wheel 12B can be efficiently removed by injecting the cleaning liquid from the upper direction, the outer direction, and the inner direction of the rear wheel 12B. In addition, by spraying the cleaning liquid from four directions on the left and right to the lug 12D that protrudes greatly, it is possible to accurately remove mud adhering to the surface of the lug 12D. As a result, the rear wheel 12B can be washed efficiently.

[Another embodiment]
(1) In the above embodiment, the pump transmission mechanism 37 that transmits the power of the engine 2 to the car wash pump 32 may have any configuration. For example, the configuration is not limited to arranging the pump transmission mechanism 37 on the opposite side of the output shaft 2D of the engine 2 to the position where the traveling transmission mechanism is arranged. may be placed. At this time, it is preferable to dispose the pump transmission mechanism 37 laterally outside of the vehicle body 1 relative to the traveling transmission mechanism, since this increases the degree of freedom in disposing the car wash pump 32 .

Further, the pump transmission mechanism 37 may be configured independently from the traveling transmission mechanism, or may be branched from the traveling transmission mechanism. By adopting such a configuration, the configuration of the pump transmission mechanism 37 can be simplified, and a configuration in which the pump transmission mechanism 37 and the traveling transmission mechanism are combined can be efficiently constructed.

When the pump transmission mechanism 37 is branched from the running transmission mechanism, the pump transmission mechanism 37 is preferably provided upstream of the continuously variable transmission 9 . As a result, the drive of the car wash pump 32 can be controlled independently of the traveling and work of the machine body 1 without constituting the pump transmission mechanism 37 independently from the traveling transmission mechanism, and the machine body 1 can be washed efficiently. can be done.

Further, the pump transmission mechanism 37 is not limited to the configuration consisting of the pulley 2C, the pulley 32A, and the rubber belt 32B, and may be configured to transmit the power output from the engine 2 to the car wash pump 32 with any configuration. As a result, the pump transmission mechanism 37 can be configured in an optimum configuration without being affected by the configuration of the cleaning mechanism, the arrangement configuration of the engine 2, and the like.

Further, the car wash pump 32 is configured to be driven by transmission of power output from the engine 2, and the transmission of power output from the engine 2 is controlled by adjusting the tension of the rubber belt 32B with the lever 32C. However, the transmission of the power output from the engine 2 may be controlled by any configuration without using the lever 32C. Further, the car wash pump 32 may be provided with a start switch or the like so that the power output from the engine 2 is always transmitted, and the drive of the car wash pump 32 may be controlled by the start switch. This increases the degree of freedom in the configuration of the car wash pump 32 .

(2) In each of the above-described embodiments, the car wash pump 32 and the tank 31 are not limited to the configuration in which the car wash pump 32 and the tank 31 are distributed to the left and right with respect to the bonnet 6 on the step 14B. It can be placed in any position, such as in the area or in the area behind the fuselage 1 . Further, the car wash pump 32 and the tank 31 may be arranged separately in the front-rear direction in consideration of the front-rear machine body balance. Also, the car wash pump 32 and the tank 31 may be arranged to overlap in the vertical direction.

At this time, the car wash pump 32 is preferably arranged near the engine 2 so as to facilitate power transmission. Further, the car wash pump 32 is preferably arranged inside the outer end of the step 14B and outside the pump transmission mechanism 37 in plan view. Moreover, it is preferable that the car wash pump 32 is arranged at a position at least partially overlapping with the engine 2 in a side view.

Furthermore, the position of the car wash pump 32 may be determined in consideration of the positional relationship with the washing device 30 in order to improve the efficiency of supplying the washing liquid to the washing device 30 (injection nozzle). For example, the car wash pump 32 is arranged in the vicinity of any one of the front wheel nozzles 39a, 39b, 39c and the rear wheel nozzles 43a, 43b, 43c, 43d, 43e, or at a substantially equal position from these. Also good.

(3) In each of the above-described embodiments, the tank 31 can be arranged at any position, and can be determined in consideration of the easiness of supplying the cleaning liquid to the car wash pump 32, the easiness of replenishing the cleaning liquid, and the like.

Also, the tank 31 may be provided on the body 1 in a detachable manner. As a result, the tank 31 can be placed at an arbitrary position on the machine body 1 so as not to interfere with the running of the vehicle, and the tank 31 can be placed in the vicinity of the car wash pump 32 or the like when performing the cleaning work. can be moved to a position where it can be cleaned efficiently.

Also, the driver's seat 16 may be configured to store the cleaning liquid, and the driver's seat 16 may be used as the tank 31 . As a result, there is no need to provide a separate tank 31, and the space of the airframe 1 can be used efficiently.

Furthermore, the tank 31 or the driver's seat 16 that can store the cleaning liquid may be configured to allow the operator to know the remaining amount of the cleaning liquid. For example, the tank 31 or the like may be provided with a scale or the like indicating the remaining amount of cleaning liquid. As a result, it is possible to prevent the cleaning liquid from running out during the cleaning operation, and it is possible to appropriately replenish the cleaning liquid.

(4) In each of the above-described embodiments, the car wash pump 32 is not limited to be driven by the engine 2, and may be driven by a drive source other than the engine 2, or by a separately provided motor. As a result, cleaning work can be performed even while the engine 2 is stopped.

(5) At least one of the bracket 41 and the bracket 44 may be supported at any position on the body 1 without being limited to the body frame 1E. As a result, it becomes easy to dispose the injection nozzles at arbitrary positions, and it becomes easy to inject the cleaning liquid to the wheels 12 from various directions.

Moreover, the bracket 41 is not limited to above the front wheel 12A, but is provided in front or behind the front wheel 12A. A configuration in which a cleaning liquid is jetted may be used. Similarly, the bracket 44 is provided not only above the rear wheel 12B, but also in front or behind the rear wheel 12B. , the cleaning liquid may be jetted from a direction shifted forward or backward. As a result, the degree of freedom in arranging the injection nozzles is improved, and the cleaning liquid can be injected from an appropriate direction according to the configuration of the wheel 12, thereby improving the cleaning efficiency.

Further, the injection direction of the cleaning liquid injected from the injection nozzle may be the direction along the tangential direction of the wheel 12 . Thereby, the cleaning efficiency of the surface of the wheel 12 can be improved.

(6) In each of the above embodiments, the number of front wheel nozzles and rear wheel nozzles is not limited to three front wheel nozzles and five rear wheel nozzles. can be set to For example, there may be two front wheel nozzles and two rear wheel nozzles, or two front wheel nozzles and three rear wheel nozzles.

(7) In each of the above embodiments, the injection nozzle may be configured to selectively inject the cleaning liquid to at least one of the left and right front wheels 12A and the left and right rear wheels 12B. Further, the injection nozzle may be configured to selectively inject the cleaning liquid to at least one of the plurality of front wheel nozzles. Further, the injection nozzle may be configured to selectively inject the cleaning liquid only to at least one of the plurality of rear wheel nozzles. With the configuration as described above, the cleaning liquid can be sprayed only to a necessary portion, and the cleaning can be efficiently performed while eliminating the waste of the cleaning liquid.

(8) In each of the above-described embodiments, the injection nozzles are not limited to the configuration provided for the wheels 12, and can be provided for any location to be cleaned on the airframe 1. As a result, it is possible to inject the cleaning liquid to an arbitrary portion of the machine body 1 for cleaning. For example, the injection nozzle is arranged at an appropriate position, and the injection nozzle can be configured to wash the underside of the machine body 1, the boarding step 14A, the boarding step 14B, the seedling planting device 3, the seedling mounting table 21, etc. .

(9) In each of the above embodiments, the cleaning device 30 is not limited to the injection nozzle, and may have any configuration as long as the location to be cleaned can be cleaned with the cleaning liquid. For example, the cleaning device 30 itself is not provided, and the other end of the hose 33 connected to the car wash pump 32 can be freely carried, and the car wash pump 32 dispenses the cleaning liquid from the hose 33 to any position on the machine body 1. It can also be configured to discharge and wash the machine body 1 . As a result, all parts of the airframe 1 can be washed.

(10) In each of the above-described embodiments, the car wash pump 32 is not limited to the configuration that sucks the cleaning liquid from the tank 31, but is configured to be able to take in water from a water source such as a tap. can also be configured to supply to the cleaning device 30 . In this case, a configuration in which the tank 31 is not provided may be adopted.

Sufficient washing can be performed without worrying about the capacity of the tank 31 by taking water from the water source and washing.

(11) In each of the above embodiments, the cleaning water may be water or a liquid that can clean stains. Furthermore, instead of washing water, gas may be used, and solids such as sand and other particulates may be used. Gases, solids, etc., including cleaning water, that are jetted from the cleaning device 30 to clean the target location are referred to as cleaning materials. That is, the object to be washed may be a liquid or a gas, and dirt such as mud adhering to the body 1 is washed by pumping the object to be washed.

(12) In each of the above embodiments, the drive source is not limited to the engine 2, and may be an electric motor or the like.

(13) In each of the above-described embodiments, the cleaning mechanism can be mounted not only on the rice transplanter but also on various agricultural machinery such as a combine harvester and a riding management machine that travels for work in a field.

INDUSTRIAL APPLICABILITY The present invention can be applied to various agricultural machines including rice transplanters.

12 wheels (running device)
12A Front wheel 12B Rear wheel 12C Tread surface 12D Lug 39a Front wheel nozzle 39b Front wheel nozzle 39c Front wheel nozzle 43a Rear wheel nozzle 43b Rear wheel nozzle 43c Rear wheel nozzle 43d Rear wheel nozzle 43e Rear wheel nozzle

Claims (7)

a traveling device having front and rear wheels;
a front wheel nozzle that injects a cleaning material onto the front wheel and is provided with one or a plurality of nozzles for each of the front wheels;
a rear wheel nozzle that injects the cleaning material to the rear wheel and is provided with a plurality of nozzles for the rear wheel,
The agricultural working machine, wherein the number of the rear wheel nozzles provided for one rear wheel is larger than the number of the front wheel nozzles provided for one front wheel. The front and rear wheels have lugs, the lugs of the rear wheels being larger than the lugs of the front wheels and inclined in side view with respect to an imaginary line extending radially from the center of the rear wheels. The agricultural work machine according to claim 1. The front wheel nozzles are provided in three directions with respect to one front wheel,
The agricultural working machine according to claim 2, wherein the rear wheel nozzles are provided in five directions with respect to one rear wheel. One of the front wheel nozzles sprays the cleaning material onto the tread surface of the front wheel, one of the front wheel nozzles sprays the cleaning material onto the front wheel from the lateral outer side of the front wheel in the axial direction, one of the nozzles for spraying the cleaning material onto the front wheel from the lateral inner side in the axial direction of the front wheel;
At least one of the rear wheel nozzles sprays the cleaning material onto the tread surface of the rear wheel, and at least one of the rear wheel nozzles sprays the cleaning material onto the rear wheel from the lateral outer side in the axle direction of the rear wheel. 4. The agricultural working machine according to claim 3, wherein the object is sprayed, and at least one of the rear wheel nozzles sprays the cleaning substance onto the rear wheel from the lateral inner side of the rear wheel in the axial direction. The rear wheel nozzle that injects the cleaning material onto the tread surface of the rear wheel has a wider range of the cleaning than the rear wheel nozzle that injects the cleaning material from the lateral outer side or the lateral inner side in the axle direction of the rear wheel. spray things,
The rear wheel nozzle that injects the cleaning material from the lateral outer side or the lateral inner side in the axial direction of the rear wheel cleans at a higher pressure than the rear wheel nozzle that injects the cleaning material onto the tread surface of the rear wheel. 5. The agricultural working machine according to claim 4, which jets an object. The front wheel nozzle for injecting the cleaning material from the lateral outer side or the lateral inner side in the axial direction of the front wheel injects the cleaning material to the lug,
The agricultural working machine according to claim 4 or 5, wherein the rear wheel nozzle for injecting the cleaning material from the lateral outer side or the lateral inner side of the rear wheel in the axial direction injects the cleaning material to the lug. the front wheel nozzle for injecting the cleaning material onto the tread surface of the front wheel injects the cleaning material in a tangential direction of the front wheel;
The agricultural working machine according to any one of claims 4 to 6, wherein the rear wheel nozzle that injects the cleaning material onto the tread surface of the rear wheel injects the cleaning material in a tangential direction of the rear wheel.

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