JP2021129546A - Work vehicle - Google Patents

Abstract

To provide a work vehicle capable of preventing bacteria/pests or the like attached to shoes of an operator from being brought into a work area (field or the like).SOLUTION: In a work vehicle provided with a step 3 to get on and off a vehicle T, sterilization/insecticidal devices S1, S2 for sterilizing or insecticidally disinfecting are furnished on the step 3. In the work vehicle, the sterilization/insecticidal devices (S1, S2) are a luminescent disinfection device (S1) for sterilizing and disinfecting with ultraviolet rays, or a disinfectant sprayer (S2) for sterilizing/insecticidally disinfecting with disinfectant, and a tractor (T) is equipped with a work device (R), and the sterilization/insecticidal devices (S1, S2) sterilize or insecticidally disinfect the work device (R) and a work area (H).SELECTED DRAWING: Figure 1

Description

The present invention relates to a work vehicle in which a driver or a worker is on board and travels to perform various tasks.

Conventionally, as a work vehicle of this type, there is a chemical spraying work vehicle in which a driver is on board and travels to spray a chemical in a field (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-175918

According to the conventional chemical spraying work vehicle, bacteria / pests in the field can be sterilized / killed by the chemical spraying device. However, bacteria / pests, etc. attached to the shoes of the worker boarding the work vehicle adhere to the vehicle, or the worker gets off from the work vehicle that has entered the field and walks in the field with shoes. There is a risk that pests, etc. will be brought into the field and malicious bacteria / pests, etc. will propagate.

Therefore, an object of the present invention is to provide a work vehicle that prevents bacteria / pests and the like adhering to workers' shoes from being brought into a work area (field, etc.).

The invention according to claim 1 is a work vehicle provided with step 3 for getting on and off the vehicle T, equipped with sterilization / insecticidal devices S1 and S2 for sterilizing or insecticidal disinfecting the step 3.

According to the invention of claim 1, since step 3 is equipped with sterilization / insecticidal devices S1 and S2 for sterilization or insecticidal disinfection, the worker puts shoes on step 3 when he / she gets on the work vehicle. Then, the shoes are sterilized or insecticidal disinfected by the sterilizing / insecticidal devices S1 and S2 in step 3, and step 3 is also sterilized or insecticidal disinfected. Therefore, it is possible to prevent bacteria / pests and the like from being brought into the vehicle T, and even if the bacteria / pests and the like adhere to step 3, it can be killed, and it is possible to bring the bacteria or pests into the work area H. Can be prevented.

The work vehicle according to claim 1, wherein the sterilizing / insecticidal devices S1 and S2 are a light emitting disinfecting device S1 that sterilizes and disinfects with ultraviolet rays, or a disinfectant solution spraying device S2 that sterilizes and disinfects with a disinfecting solution. Is.

The invention according to claim 3 is the work according to claim 1 or 2, wherein the work device R is attached to the tractor T, and the work device R and the work area H are sterilized / insecticidal devices S1 and S2. It is a vehicle.

It is an overall perspective view of the work vehicle which attached the rotary tiller R to the rear part of the tractor T which concerns on embodiment of this invention. It is a side view of the main part of the rear wheel part of the work vehicle. It is a top view of the main part of the rear wheel part. It is an overall perspective view of another Embodiment (1) of this invention.

An example in which the present invention is applied to a tractor T equipped with a rotary tiller R as a work device at the rear part of the work vehicle will be described with reference to the drawings.

(overall structure)
As shown in FIG. 1, the rotary tiller R is mounted on the rear part of the tractor T via a three-point link mechanism, and the rotary tiller R is moved up and down by a hydraulic device (hydraulic cylinder). It can be moved up and down.

A luminescent disinfectant device S1 as a disinfectant device that sterilizes and disinfects the front wheels 1 and rear wheels 2 as traveling wheels by ultraviolet rays, and a disinfectant solution sprayer S2 that disinfects / insecticidal disinfects the front wheels 1, rear wheels 2 and step 3 with a disinfectant solution. Equipped with. The disinfectant solution spraying device S2 also disinfects the field H cultivated as a work area by the rotary tiller R.

(Tractor)
The tractor T has an engine mounted in the bonnet 4 at the front of the fuselage, shifts the driving force of the engine by a transmission, and is steered left and right by operating a steering handle provided in the cabin 5 on the fuselage. The front wheels 1 and the left and right rear wheels 2 are rotationally driven to travel.

The left and right front fenders 6 that cover the upper side and the upper side of the left and right front wheels 1 are fixedly provided on the airframe side. The left and right front fenders 6 may be provided on the case on the left and right front wheels 1 side so as to change the direction integrally with the left and right steering of the left and right front wheels 1.

The left and right rear fenders 7 that cover the upper side and the upper side of the left and right rear wheels 2 are fixedly provided on the fuselage side.

The cabin 5 is provided with left and right doors 8 for boarding on the left and right so as to be openable and closable, and left and right steps 3 for getting on and off are provided at the lower part.

(Rotary tillage device)
The rotary tiller R fixes the upper parts of the transmission side case 10 and the support frame 11 to the left and right sides of the main frame 9, and rotatably supports the rotary shaft 12 between the transmission side case 10 and the lower part of the support frame 11. The base of the tilling claw 14 is fixed with a bolt to the claw folder 13 fixed to the rotary shaft 12 in a staggered manner. The driving force from the transmission of the tractor T is input to the transmission side case 10 via the PTO shaft, and the rotary shaft 12 is driven and rotated via the transmission mechanism.

The rear cover 15 is provided with an upper end portion pivotally supported by the main frame 9 and a rear end portion that can be moved up and down. The front ends of the left and right side covers 16 are fixedly supported by the transmission side case 10 and the support frame 11, respectively.

(Luminescent disinfection device)
As shown in FIGS. 1, 2 and 3, the light emitting sterilizer S1 is equipped with a plurality of ultraviolet lamps 17 on the left and right front fenders 6 and the left and right rear fenders 7 when moving to a field (when traveling on a road). When moving between fields), the left and right front wheels 1 and the left and right rear wheels 2 are irradiated with ultraviolet rays to sterilize them. The ultraviolet lamp 17 emits light with electric power from the battery of the tractor T.

A plurality of ultraviolet lamps 17 are provided in a staggered manner inside the upper surface portion and the side surface portion of the left and right front fenders 6 and the left and right rear fenders 7, and the irradiation direction is so as not to be a blind spot of the propulsion lugs of the front wheels 1 and the rear wheels 2. Install at an angle from the wheel center direction.

Further, the left and right front fenders 6 and the left and right rear fenders 7 are shaped so that the upper surface and the side surface cover the upper parts of the front wheels 1 and the rear wheels 2 so that the ultraviolet rays of the ultraviolet lamp 17 do not leak to the outside. .. If the inner surfaces of the left and right front fenders 6 and the left and right rear fenders 7 are mirrored, ultraviolet rays can be effectively used. If the left and right front fenders 6 and the left and right rear fenders 7 are removable, they can be retrofitted to existing tractors. When the left and right front fenders 6 are provided in the case on the left and right front wheels 1 side so as to change the direction integrally with the left and right steering of the left and right front wheels 1, the ultraviolet lamp 17 always irradiates the left and right front wheels 1 with ultraviolet rays even if the steering operation is performed. , The sterilizing and disinfecting action is efficient. If the side surface portions of the left and right front fenders 6 and the left and right rear fenders 7 are detachable, the left and right front wheels 1 and the left and right rear wheels 2 can be easily replaced.

The left and right front wheels 1 and the left and right rear wheels 2 use ultraviolet-resistant type tires.

As a means for turning on the ultraviolet lamp 17 when moving to the field, the auxiliary transmission is turned on by "road speed" or "moving side". Further, the rotary tillage device R may be turned on by the ascending operation detection or the maximum ascending detection.

For the safety of the operator, the ultraviolet lamp 17 is turned off when the left and right doors 8 are opened, turned off when the engine is stopped, turned off when the driver is not seated by providing a seating sensor in the driver's seat, and turned off when the vehicle is stopped. do. Further, a main switch that allows the operator to turn on / off the ultraviolet lamp 17 as needed is provided on the operation panel in the cabin 5. Further, the cabin 5 uses glass for blocking ultraviolet rays. Further, when the ultraviolet lamp 17 is lit, it is safe to indicate that the ultraviolet lamp is lit outside the tractor T and turn on the caution lamp in order to call attention.

If cleaning nozzles for cleaning the surface of the ultraviolet lamp 17 are provided in the left and right front fenders 6 and the left and right rear fenders 7 to clean the mud adhering to the surface of the ultraviolet lamp 17, the infrared lamp 17 can be sterilized and disinfected. It can be prevented from being hindered by the attached mud. The cleaning nozzle may be provided with a dedicated cleaning nozzle, or may also be used as the nozzle 18 of the disinfectant solution spraying device S2 described later.

Further, it is preferable to provide ultraviolet lamps 17 on the left and right steps 3 to sterilize the front surface / back surface of the side plates 3a and the tread plates 3b of the left and right steps 3. In this case, the ultraviolet rays leaked from step 3 irradiate the left and right front wheels 1 and the left and right rear wheels 2, and the left and right front wheels 1 and the left and right rear wheels 2 can also be sterilized.

(Disinfectant spraying device)
The disinfectant solution spraying device S2 is a mixture of a gear pump, a disinfectant solution, and an insecticide solution (hereinafter referred to as a chemical solution) that can turn on / off the driving force from the transmission side case 10 by a clutch mechanism on the main frame 9 of the rotary tiller R. A spray case 19 having a built-in chemical liquid tank for storing is provided.

Two left and right nozzles 18 are provided side by side on each of the left and right front fenders 6 and the rear left and right rear fenders 7, and the nozzles 18 and the gear pump in the spray case 19 are connected by a spray pipe 20. Further, nozzles 18 are provided on the side plates 3a of the left and right steps 3 and the tread plates 3b of the two steps, respectively, and each nozzle 18 and the gear pump in the spray case 19 are connected by a spray pipe 21. Further, the rotary shaft 12 is formed of a hollow pipe, and a through hole is provided at the bottom of the claw folder 13 provided on the rotary shaft 12 to communicate with the hollow portion of the rotary shaft 12, and the hollow portion at the left end of the rotary shaft 12 and the inside of the spray case 19. Is connected to the gear pump of No. 1 by a spray pipe 22 passing through the transmission side case 10.

Therefore, the chemical solution in the chemical solution tank is sprayed into the left and right front fenders 6 and the left and right rear fenders 7 via the spray pipe 20 and the nozzle 18 by the gear pump in the spraying case 19, and is sprayed on the left and right front wheels 1 and the left and right rear wheels 2. It is sterilized and insecticidal.

Further, the chemical solution in the chemical solution tank is sprayed on the side plate 3a of the left and right step 3 and the two-stage tread plate 3b via the spray pipe 21 and the nozzle 18 by the gear pump in the spraying case 19, and is sterilized and insecticidally disinfected.

The chemical solution sprayed on the tread plate 3b is designed to be ejected slightly upward from the upper surface of the tread plate 3b, and the shoes are also sterilized and insecticidal disinfected when the worker puts his / her foot on the tread plate 3b.

Further, the two-stage tread plate 3b has two stages, a lower stage 3b and an upper stage 3b, but a throttle valve is attached to the nozzle 18 of the lower stage 3b, and the chemical liquid discharge amount of the lower stage 3b is larger than the chemical liquid discharge amount of the upper stage 3b. Is also set less. In other words, if the tread plate 3b has multiple stages, the discharge amount is set to be larger toward the upper stage, and the amount of chemical solution gradually increases as the worker goes up in step 3, so that the shoes can be sterilized / killed appropriately. I have to.

Further, a dedicated gear pump for the left and right step 3 is provided, a pressure sensor is provided on the tread plate 3b of the left and right step 3, and it is detected that the operator puts his foot on the tread plate 3b when going up the step 3, and the operator The dedicated gear pump may be driven to discharge the chemical solution only when the foot is placed on the tread plate 3b when going up step 3. Instead of the pressure-sensitive sensor on the tread plate 3b, a sensor was provided on the boarding / alighting grip 31 that the operator grips when boarding the cabin 5, and the worker grips the boarding / alighting grip 31 when going up step 3. May be detected and a dedicated gear pump may be driven to discharge the chemical solution in step 3. Further, a sensor for detecting that the door 8 of the cabin 5 has been opened is provided to detect that the door 8 of the cabin 5 has been opened, and the pressure-sensitive sensor of the tread plate 3b or the sensor of the grip 31 for getting on and off can be used. When a worker is detected, a dedicated gear pump may be driven to discharge the chemical solution in step 3.

Further, the chemical solution in the chemical solution tank is sent into the hollow at the left end of the rotary shaft 12 via the spraying pipe 22 by the gear pump in the spraying case 19. Then, the chemical solution sent into the hollow of the rotary shaft 12 is sent into each claw folder 13 through the through hole at the bottom of each claw folder 13 communicating with the hollow portion of the rotary shaft 12, and the rotary shaft 12 during the tilling work is carried out. Along with the rotation of the claw folder 13, a chemical solution is sprayed from each claw folder 13 to the field to sterilize and insecticidal the mud in the field. When the rotary shaft 12 rotates at a low speed, the chemical solution is sprayed on the mud in the field along the tilling claw 14, and when the rotary shaft 12 rotates at a high speed, the chemical solution further penetrates into the mud due to centrifugal force. Increase. The tilling claw 14 is made hollow, the hollow portion of the claw base is communicated with the through hole at the bottom of the claw folder 13, and a hole communicating with the hollow is formed on the back side of the tilling claw 14 in the rotation direction. The chemical solution may be sprayed.

An operation device for operating the clutch mechanism in the spray case 19 is provided on the operation panel in the cabin 5, and the gear pump is switched between the operating state and the non-operating state. Thereby, the operation / non-operation of the chemical spraying can be switched by the operating device. Further, the drive of the gear pump can be interlocked with the drive of the rotary shaft 12, and the chemical solution can be sprayed during the tilling work, and the chemical solution spraying can be stopped when the tilling work is not performed. Further, a transmission may be provided in the drive system of the gear pump to make the discharge amount of the chemical solution variable. Further, the gear pump may be driven by a variable speed motor to change the discharge amount of the chemical solution.

In addition, before entering the field for tilling work or before leaving the field after finishing the tilling work, the rotary tilling device R is set to a slightly raised position away from the road surface or the field, and the rotary shaft 12 is driven and rotated to drive and rotate the chemical solution. Is discharged, the chemical solution is sprayed on the rotary tiller R, and the rotary tiller R can be sterilized / insecticidal disinfected. Therefore, it is possible to prevent the introduction of bacteria and pests into the field or the removal of bacteria and pests from the field.

Each part of the rotary tiller R is made of corrosion-resistant metal such as stainless steel and has corrosion resistance to chemicals.

A warmer may be attached to the chemical solution tank to appropriately heat the chemical solution and spray it.

Further, since the spray case 19 containing the chemical solution tank is arranged near the rear window 30 that opens and closes the cabin 5 of the tractor T, it is easy to supply the chemical solution.

In short, the luminescent disinfectant device S1 and the disinfectant solution spraying device S2 sterilize / disinfect the front wheels 1, the rear wheels 2, the step 3 and the rotary tiller R. It is possible to prevent bringing in or taking out bacteria / pests from the field H.

(Another embodiment)

(1) FIG. 4 is another embodiment of sterilizing / insecticidal disinfecting the rotary tiller R by the light emitting disinfectant device S1 and the disinfectant solution spraying device S2.

That is, the ultraviolet lamps 17 are fitted into the rear cover 15 from the outside by arranging them in the left-right direction on the rotating pivot side of the rear cover 15 of the rotary tillage device R, and the light emitting disinfectant device S1 irradiates the inside of the rear cover 15 with ultraviolet rays. While cultivating, the field is sterilized and disinfected, and the rotary tiller R itself is sterilized and disinfected.

The ultraviolet lamp 17 is attached to the rear cover 15 via a soft rubber or a spring material, and the mud adhering to the ultraviolet lamp 17 is easily removed by the vibration of the rear cover 15 during tillage. Further, the light emitting surface of the ultraviolet lamp 17 is arranged at a position recessed from the inner surface of the rear cover 15, so that mud does not easily adhere directly to the rear cover 15 during tillage. Further, the ultraviolet lamp 17 is detachably attached to the rear cover 15 from the outside, and is easy to clean.

The covers such as the rear cover 15 and the left and right side covers 16 also serve as protective covers for preventing ultraviolet rays from leaking to the outside.

Further, nozzles 18 are provided side by side on the rotating pivot side of the rear cover 15 of the rotary tiller R, and the nozzles 18 and the gear pump in the spraying case 19 are connected by a spraying pipe 23 to the disinfectant spraying device S2. The chemical solution is sprayed inside the rear cover 15 to sterilize / sterilize the field while cultivating, and sterilize / sterilize the rotary tiller R itself.

(2) The chemical solution may be sprayed by the disinfectant solution spraying device S2 in accordance with the light emission of the ultraviolet lamp 17 of the light emitting disinfectant device S1.

(3) Instead of the light emitting disinfectant device S1, the aircraft is equipped with a tank for storing bactericidal gas such as ozone, a nozzle is provided at the position of the ultraviolet lamp, the tank and the nozzle are connected by a pipe, and the pipe is in the middle. A valve may be provided in the nozzle to sterilize and disinfect by ejecting a gas having a bactericidal action such as ozone from a nozzle.

(4) The vehicle speed suitable for disinfection and tillage is displayed on the monitor of the operation panel in the cabin 5.

(5) Display the vehicle speed and the disinfection ratio in a graph or the like.

(6) When the disinfection efficiency falls below a certain level, the operator is notified by a monitor or an alarm.

3 Step H Field (work area)
S1 Luminous disinfection device (sterilization / insecticide device)
S2 Disinfectant spraying device (sterilization / insecticide device)
T tractor (vehicle)
R work equipment (rotary tillage equipment)

Claims (3)

A work vehicle provided with a step (3) for getting on and off the vehicle (T), wherein the step (3) is equipped with a sterilization / insecticidal device (S1, S2) for sterilizing or insecticidal disinfection. The first aspect of claim 1, wherein the sterilizing / insecticidal apparatus (S1, S2) is a luminescent disinfecting apparatus (S1) that sterilizes and disinfects with ultraviolet rays, or a disinfectant liquid spraying apparatus (S2) that sterilizes / insecticidal disinfects with a disinfecting solution. Work vehicle. 1. The work vehicle according to claim 2.

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