JP6041545B2 - Boom spreader - Google Patents

Description

  The present invention relates to a boom spreading device directly mounted on a tractor.

  As a boom spraying device such as a boom sprayer, a tractor directly mounted type is known. A tractor direct-mounted boom spreader is mounted on the tractor's three-point link hitch and spreads in a state where the boom is unfolded to the side intersecting the traveling direction of the tractor. It is removed from the point ring hitch and stored in a storage location such as a warehouse.

  In such a tractor direct-mounted boom spraying device, for example, a stand structure as described in the following Patent Document 1 is used in order to easily move in the storage location and attach the tractor to the three-point link hitch. What you have is known. In this prior art, a pair of foldable support legs are attached to the lower part of a machine body on which a chemical tank or the like is mounted, and traveling wheels are provided at the lower ends of the support legs.

JP 2001-346495 A

  According to the above-described prior art, four traveling wheels, each having two front and rear wheels, are mounted on the support legs of the stand structure, and the traveling wheels are configured by caster-type tires having directionality, so that the boom can be set in the storage space. It is possible to move the spraying device freely. However, when the boom spraying device is fixed in the storage place, it is necessary to perform a lock operation on all four traveling wheels, and there is a problem that the lock operation and the unlock operation at the time of movement and fixation are complicated. .

  On the other hand, a connection mechanism called a quick hitch or an auto hitch is widely used as a mechanism for easily connecting a work machine to a three-point link hitch of a tractor. In this connection mechanism, a connection auxiliary coupler (for example, a quick coupler) is mounted in advance on the three-point link hitch of the tractor, and the work machine side is engaged with three engagement portions of the connection auxiliary coupler. A connecting part is provided.

  When the boom spreader having the above-described stand structure is adapted to a connection mechanism called a quick hitch or an auto hitch, when the four wheels are unlocked, the coupling auxiliary coupler is brought into the stage of bringing the tractor closer to the boom spreader. However, there is a problem that the boom spraying device moves due to contact with the connecting portion of the boom spraying device and cannot be smoothly connected without an auxiliary worker.

  Further, since the boom spreading device is in an upright state due to the stand structure, it is difficult to engage the engaging portion at the top position of the coupling auxiliary coupler with the connecting portion at the top position of the boom spreading device. There was a problem that smooth connection using a connection mechanism called "cannot be performed".

  This invention makes it an example of a subject to cope with such a problem. That is, in a state where it is detached from the three-point link hitch of the tractor, the boom spreading device can be freely moved in the storage place and the boom spreading device can be easily fixed, and the three-point link hitch of the tractor. An object of the present invention is that smooth connection is possible even without an auxiliary worker when connecting to the connection auxiliary coupler equipped in the above.

  In order to achieve such an object, a boom spraying apparatus according to the present invention comprises at least the following configuration.

A boom sprayer directly mounted on a tractor, the tank storing a liquid agent, a pump for pumping the liquid agent in the tank to a spray hose, a body frame on which the tank and the pump are mounted, and the body And a boom mechanism having a spray nozzle that is pivotally supported by the frame and communicates with the spray hose, and the fuselage frame is connected to a connection auxiliary coupler provided in a three-point link hitch of the tractor A support leg is provided at a lower portion of the fuselage frame so as to stand and support the fuselage frame in a forward tilted posture, and the support leg includes a frame extending in the front-rear direction. wheels provided at the front end of the frame is provided with a ground portion, a front portion of the machine body frame, a handle for moving the machine body frame by the wheels lift the ground portion is provided, the wheel is ,Previous The body frame when the lift-up of the connecting portion is guided to the tractor side, the boom spray apparatus characterized by guiding the aircraft frame during lowering of the connecting portion to the tractor on the opposite side.

  According to the boom spreader having such a feature, when the tractor is detached from the three-point link hitch, the boom spreader can be freely moved in the storage place by the wheel by lifting the grounding portion of the support leg by holding the handle. Can be moved. Further, when the boom spraying device is fixed, the boom spraying device can be simply fixed by simply grounding the grounding portion of the support leg.

  At the time of connection with the connection auxiliary coupler equipped in the three-point link hitch of the tractor, the boom spreading device is supported upright by the support leg in a forward tilting posture, so that the top position engaging part of the connection auxiliary coupler can be easily connected to the connection part. Can be engaged. Furthermore, since the wheels of the support legs guide the boom spraying device to the tractor side at the time of connection, the boom spraying device can be smoothly connected to the connection auxiliary coupler even without an auxiliary worker.

It is explanatory drawing (whole perspective view) which showed the whole structure of the boom spraying apparatus which concerns on embodiment of this invention. It is explanatory drawing explaining the function of the boom spreading apparatus which concerns on embodiment of this invention. It is explanatory drawing explaining the function of the boom spreading apparatus which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view (overall perspective view) showing an overall configuration of a boom spraying apparatus according to an embodiment of the present invention. The boom spraying device 1 includes a tank 2 in which a liquid agent such as a chemical solution is stored, a pump 3 that pumps the liquid in the tank 2 to a spraying hose (not shown), a body frame 10 on which the tank 2 and the pump 3 are mounted, A boom mechanism 5 including a spray nozzle 4 that is pivotably supported by the machine frame 10 and communicates with a spray hose (not shown). The boom mechanism 5 includes a boom opening / closing part 51 pivotally supported by the body frame 10, a boom holding part 52 detachably attached to the boom opening / closing part 51, and a boom 53 held by the boom holding part 52. The spray hose (not shown) is provided along the boom 53 and communicates with the spray nozzles 4 that are arranged in the boom 53 at a predetermined interval. The boom opening / closing part 51 is pivotally supported on the body frame 10 by a pivot shaft 50 inclined obliquely rearward, and the boom mechanism 5 is foldable so that the tip of the boom 53 faces obliquely upward.

  The body frame 10 includes a connecting portion 11 for directly mounting the tractor on the front portion 10A. The connecting portion 11 is a portion that is connected to a connecting auxiliary coupler (not shown) provided in the three-point link hitch of the tractor, and includes a top position connecting portion 11A and lower position connecting portions 11B and 11B. The auxiliary coupling coupler here is a mechanism provided to simplify the connection between the tractor's three-point link hitch and the work implement. Generally, a mechanism called a quick hitch, quick coupler, or auto hitch is used. Contains.

  A support leg 6 is provided at the lower portion 10B of the body frame 10 to stand and support the body frame 10 in a forward tilt posture. The support legs 6 may be detachably provided on the lower part 10B of the body frame 10 or may be fixedly provided. The support leg 6 includes a frame 60 extending in the front-rear direction. A wheel 61 is provided at the rear end portion of the frame 60, and a grounding portion 62 is provided at the front end portion of the frame 60. The support leg 6 is fixed in a state where the grounding portion 62 of the frame 60 is in contact with the ground, and the support leg 6 stands and supports the body frame 10 in a tilted posture in this state. The frame 60 includes an upright portion 60 </ b> A, and the upright portion 60 </ b> A is attached to the lower portion 10 </ b> B of the body frame 10.

  A handle 7 is provided at the front portion 10 </ b> A of the body frame 10. The handle 7 has a function of manually lifting the grounding portion 62 with the wheel 61 as a fulcrum and moving the body frame 10 by the wheel 61. The handle 7 may be provided so as to be foldable along the front portion 10A of the machine body frame 10 or may be provided in a fixed state.

  The body frame 10 is provided with an input shaft 12. The input shaft 12 is connected to an output joint of a universal joint fixed to the coupling auxiliary coupler, so that a driving force output from the PTO shaft of the tractor is input via the universal joint. The input shaft 12 is connected to the drive shaft of the pump 3.

  FIG.2 and FIG.3 is explanatory drawing explaining the function of the boom spreading apparatus which concerns on embodiment of this invention. FIG. 2 shows a function when the boom spraying device removed from the tractor is moved. In the illustrated example, the boom 53 is removed from the boom mechanism 5.

  As shown in FIG. 2A, the boom spreading device 1 can store the body frame 10 in a forward tilted posture by grounding the grounding portion 62 of the support leg 6 to the ground or the floor G. . At this time, since the fuselage frame 10 is fixed by the grounding resistance of the grounding part 62, the boom spraying device 1 can be easily fixed to the ground surface or the floor G without particularly providing a lock mechanism on the wheel 61 of the support leg 6. Can do.

  When the boom spreading device 1 is moved, as shown in FIG. 2B, the worker W lifts the grounding portion 62 of the support leg 6 with the handle 7. In general, the tank 2 is empty during storage, and the total weight of the boom spraying device 1 is relatively light. This makes it possible to easily lift the grounding part 62 manually. After lifting the grounding part 62, the boom spraying device 1 can be easily moved by the principle of a cat car using the wheels 61. In general, farm machines with casters are well known, but farm machines such as rotary machines are very heavy and cannot employ the structure of the support legs 6 that lift the grounding part 62 manually. The present invention skillfully utilizes the characteristics of the boom spraying device 1 in which the total weight is reduced by emptying the tank 2.

  FIG. 3 shows functions when the boom spreading device is connected to the tractor. The tractor T is equipped with a connection auxiliary coupler Q on the top link T1 and the lower link T2 of the rear three-point link hitch. As shown in FIG. 3 (a), the boom spreading device 1 is supported upright in a forward tilted posture by the support leg 6, so that the top position engaging portion Q1 of the auxiliary coupling coupler Q provided in the tractor T can be simply mounted on the body. The top position connecting portion 11A provided on the front portion 10A of the frame 10 can be engaged. At this time, since the fuselage frame 10 is fixed to the floor surface or the ground G by the grounding portion 62 of the support leg 6, the fuselage frame 10 does not move without darkness even if the wheels 61 are not locked. The position engaging portion Q1 can be easily engaged with the top position connecting portion 11A of the body frame 10.

  After engaging the top position engaging portion Q1 of the connection auxiliary coupler Q with the top position connecting portion 11A in the fuselage frame 10, as shown in FIG. 3B, a three-point link hitch (top link T1 and lower link T2). When the vehicle is lifted up, the ground contact portion 62 of the support leg 6 is lifted. At this time, the vehicle body frame 10 is guided to the tractor T side with the wheel 61 being grounded. As a result, the lower position connecting portion 11B provided in the machine body frame 10 is smoothly engaged with the lower position engaging portion Q2 of the auxiliary connecting coupler Q.

  Thus, the wheel 61 of the support leg 6 according to the embodiment of the present invention functions as a moving wheel at the time of manual push movement by the handle 7 and connects the boom spraying device 1 to the tractor T including the connection assisting coupler Q. It functions as a connecting guide wheel. In particular, since the wheel 61 of the support leg 6 is provided only on the rear side of the frame 60, the boom spraying device 1 can be moved freely by lifting the grounding portion 62 with the handle 7 provided on the front portion 10A of the body frame 10. Therefore, when connecting to the tractor T, the body frame 10 tilted forward can be smoothly guided to the tractor T side.

  Further, when removing the boom spraying device 1 from the tractor T, the three-point link hitch (top link T1 and lower link T2) is lowered until the state shown in FIG. Then, when the three-point link hitch is further lowered, the wheel 61 moves and the grounding portion 62 of the support leg 6 can be grounded smoothly. And when removing the boom spreading apparatus 1 from the connection auxiliary coupler Q, since the boom spreading apparatus 1 is fixed by the grounding portion 62 of the support leg 6, the boom spreading apparatus 1 moves during the removing operation. The boom spraying device 1 can be quickly detached from the coupling auxiliary coupler Q.

  As described above, according to the boom spreading device 1 according to the embodiment of the present invention, in the state where the tractor T is detached from the three-point link hitch, by holding the handle 7 and lifting the grounding portion 62 of the support leg 6, The boom spraying device 1 can be moved freely within the storage location by the wheel 61. Further, when the boom spreading device 1 is fixed, the boom spreading device 1 can be easily fixed by simply grounding the grounding portion 62 of the support leg 6 without particularly locking the wheel 61.

  Furthermore, when connecting to the connection auxiliary coupler Q provided in the three-point link hitch of the tractor T, the boom spreading device 1 is supported upright by the support leg 6 in a forward tilting posture. The joining portion Q1 can be easily engaged with the top position connecting portion 11A. Furthermore, since the wheel 61 of the support leg 6 guides the boom spreading device 1 to the tractor T side at the time of connection, the boom spreading device 1 can be smoothly connected to the connection auxiliary coupler Q even without an auxiliary worker.

1 :: Boom spraying device, 2: Tank, 3: Pump, 4: Spray nozzle,
5: Boom mechanism, 50: Pivot shaft, 51: Boom opening / closing part, 52: Boom holding part,
53: Boom,
6: support leg, 60: frame, 60A: upright part, 61: wheel,
62: grounding part,
7: Handle,
10: Airframe, 10A: Front part, 10B: Lower part,
11: connection part, 11A: top position connection part, 11B: lower position connection part,
12: Input shaft, T: Tractor

Claims (2)

A boom spreading device directly mounted on a tractor,
A tank in which the liquid agent is stored;
A pump for pumping the liquid in the tank to a spray hose;
A body frame on which the tank and the pump are mounted;
A boom mechanism provided with a spray nozzle that is pivotably supported by the machine frame and communicates with the spray hose;
The fuselage frame is provided with a connecting portion connected to a connecting auxiliary coupler provided in a three-point link hitch of the tractor at a front portion,
At the bottom of the fuselage frame, a support leg is provided to stand and support the fuselage frame in a forward tilted posture.
The support leg includes a frame extending forward and backward, a wheel is provided at a rear end portion of the frame, and a grounding portion is provided at a front end portion of the frame,
A handle for lifting the grounding part and moving the body frame by the wheels is provided at the front of the body frame ,
The boom spraying device characterized in that the wheel guides the fuselage frame to the tractor side when the connecting portion is lifted up, and guides the fuselage frame to the opposite side of the tractor when the connecting portion is lowered . The boom sprayer according to claim 1, wherein the handle is provided so as to be foldable in a storage state along the front portion.

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