JPH0640761B2 - Walk-behind agricultural work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a walk-type vehicle body, which is steered by an operator who walks and follows to steer the vehicle, is provided with a hitch for mounting the work machine, and various work machines are interchangeably mounted. The present invention relates to an improvement of a walk-type agricultural work vehicle that has been obtained.

A walk-type agricultural work vehicle (or agricultural tractor), which is compatible with various types of work equipment, is widely used by farmers as a so-called hand tractor. Is small, and it is small and lightweight, so if you install a heavy work machine that requires a large traction force, such as a crushing plow or a deep-plow plow, slippage occurs due to insufficient traction force, making it impossible to work. Therefore, there is a limitation that compatible working machines are limited to light work with low traction resistance, and try to install a working machine that requires vibration, such as a ridge molding machine that hits and tightens the shoulder of the cultivation ridge. Then, the horsepower becomes insufficient for driving the vibration mechanism. Therefore, in order to perform work with a work machine having a large traction resistance such as subsoil crushing plow, deep plow, or a work machine that requires a vibrating mechanism that needs to be driven in addition to towing, a large, heavy-duty work machine is required. There is a problem that a separate tractor must be prepared.

The present invention has been made to solve this problem, and provides a lightweight and small walk-type agricultural tractor,
Even if a work machine with a large traction resistance such as subsoil crushing, or a ridge forming machine that hits and tightens the shoulder of the cultivation floor is used, it will cause a lack of horsepower even if a work machine that requires a vibration mechanism is installed. It is an object of the present invention to provide a new means that enables the work to be performed without a need and expands the range of use of a lightweight, small-sized walking type agricultural tractor.

Further, in the present invention, as means for achieving this object, a walk-type agricultural machine provided with a vehicle body that can be freely driven by wheels, an engine that drives the wheels, and a handle that is operated by an operator who walks and follows. In the tractor, a supporting machine frame is mounted on the front surface side or the rear surface side of the vehicle body, and a swinging machine frame that swings in the vertical direction or a combined direction of the vertical direction and the front-back direction is supported on the supporting machine frame. Then, the rocker frame is provided with a hitch for mounting a working machine while mounting and supporting a vibration device in which a plurality of unbalancer-type vibration mechanisms are axially mounted in parallel on a frame body. The present invention provides a walk-type agricultural work vehicle in which an input shaft is conductively connected to a power take-off shaft of the engine provided on a vehicle body through a transmission mechanism.

Next, embodiments will be described in detail with reference to the drawings.

FIG. 1 is a side view of a traveling type agricultural work vehicle in which the present invention is implemented, in which a deep plow is mounted, in which T is a walking type agricultural tractor and 1 is mounted on a vehicle body a of the agricultural tractor T. The support machine frame 2 is an oscillating machine frame which is supported on the support machine frame 1 so as to swing up and down, 3 is a vibrating device, 4 is a hitch for mounting the work machine, and S is a work machine mounted.

The walk-type agricultural tractor T has a vehicle body a that freely travels by wheels w, an engine e that drives the wheels w mounted on the vehicle body a, and a handle h operated by an operator who walks and follows to project backward. It is a conventionally known hand tractor constructed by being mounted.

The support machine frame 1 is composed of a main body portion 1a that supports the rocker frame 2 and a mounting portion 1b that is integrally assembled with the vehicle body a of the agricultural tractor T. The mounting portion 1b is formed in a box shape, and is formed in a box shape to be fitted to a normal connecting hitch b mounted on the rear end portion or the front end portion of the vehicle body a of the agricultural tractor T. In this state, the connecting pin P is vertically penetrated in the state of being fitted to the connecting hitch b so as to be integrally assembled to the vehicle body a. This mounting part 1
There is a case where b is assembled to the vehicle body a by a dedicated assembling means without using the connecting hitch b which is usually mounted on the vehicle body a. Further, the main body portion 1a is formed in a vertically long frame body and is integrally connected to the above-described mounting portion 1b. By mounting the mounting portion 1b on the vehicle body a, the main body portion 1a is integrally formed with the vehicle body a. It is designed to be assembled.

The oscillating machine frame 2 is formed in a frame body that is long in the front-rear direction, and a fulcrum shaft 10 whose front end is provided at the upper end of the supporting machine frame 1 is provided.
The rear end side is a pivotal end and can be freely swung up and down. The rocker frame 2 may be vertically movably supported on the support frame 1, and the connecting means to the support frame 1 is arbitrary. Further, the mounting position of the fulcrum shaft 10 when it is mounted on the support device frame 1 by the fulcrum shaft 10 is arbitrary, and as in the embodiment shown in FIG.
It may be installed at the lower end of the.

On the rotation end side of the rocker frame 2, one end side of the connecting rod 5 that expands and contracts in a shock absorber shape is provided.
The rocking range of the rocking machine frame 2 is that the rocking machine frame 2 is connected to the supporting machine frame 1 via the frame body 30 of the vibrating device 3 and the other end side of the connecting rod 5 is connected to the supporting machine frame 1. Is regulated within a certain range, and is oscillated when a load larger than a predetermined load set on the connecting rod 5 is applied.

As shown in FIG. 8, the vibrating device 3 includes an unbalancer type vibrating mechanism 3a in which a weight 32 is eccentrically provided on a rotating shaft 31, as shown in FIGS. As the posture in which the rotation axis 31 of the
The two parallel unbalancer type vibrating mechanisms 3a, 3a are respectively installed so as to coaxially rotate the gear G and are meshed with each other. By aligning them, they are synchronized with each other so that they rotate in opposite directions, and the weights 32, 32 are positioned so as to occupy symmetrical positions with respect to each other in the left-right direction about each rotation shaft 31 and rotate. An unbalancer type exciter in which gears G and G are meshed with each other to cancel the generated vibrations in the left-right direction and generate vibrations only in the vertical direction. In FIG. 9, the rotary shaft 31 of each vibrating mechanism 3a is moved to the state in which the axial direction is the vertical direction.
By rotating 0 degree, the generated vibration becomes the front-back direction, and in that state, by rotating the frame body 30 by 90 degrees along the horizontal direction, the direction of the generated vibration becomes the left-right direction. Thus, in this example, each of the vibration generating mechanisms 3a uses the rotating shafts 31 and 31 as the horizontal direction so that the vibrations are generated in the vertical direction.
As shown in the figure, they are arranged side by side in the front-rear direction, and in this state, they are assembled and supported on the rear end side of the rocker frame 2 described above. In this case, the frame body 30 is replaced by 9 so that FIG. 11 is a front view.
In some cases, the rotary shafts 31 and 31 are assembled to the rocker frame 2 in a state of being juxtaposed to the left and right by turning 0 degrees, and the frame body 30 is rotated 90 degrees along a vertical plane from the state of FIG. 11. By doing so, the rotating shafts 31, 31 are vertically aligned in parallel,
The rocker frame 2 so that the direction of the generated vibration is the front-back direction.
May be attached to.

Assembling of the vibrating device 3 to the rocker frame 2 is not limited to the case of assembling on the lower surface side of the rocker frame 2 as shown in FIG. 1, but the embodiment shown in FIG. As described above, it may be assembled on the upper surface side of the rocker frame 2, which is optional.

Further, in the vibrating device 3, an input shaft 33 for driving a vibrating mechanism 3a mounted on the frame 30 of the vibrating device 3 is provided. The input shaft 33 is provided by projecting to the outer surface side, and the input shaft 33 is conductively connected to the power take-off shaft c mounted on the vehicle body a of the agricultural tractor T through the transmission mechanism 6, thereby making it possible to connect the agricultural tractor T to the agricultural tractor T. It is designed to be driven by an installed engine e. The driving of the vibration generating device 3 is achieved by separately assembling a driving engine to the rocker frame 2 or the frame body 30 of the vibration generating device 3 and connecting the output shaft thereof to the input shaft 33 through a conduction mechanism. You may have to do it.

The vibrating device 3 is also provided with a breather because the vibrating device 3 is configured like a gear box in which the frame body 30 is sealed and gear oil is sealed inside, and the breather is shown in FIG. As shown, the rotary shaft 31 is provided with a through hole 34 in the radial direction from the peripheral surface thereof to the shaft core portion, and the through hole 34 is formed in the shaft core portion of the rotary shaft 31 along the shaft core line. The through hole 35 is connected to the outside through an opening that opens to the outer end surface of the rotary shaft 31. Thus, the through hole 34
The oil that infiltrates into the inside of the frame body 30 is shaken out by the shaking action of the rotation of the through hole 34, and only the air flows into and out of the frame body 30. Incidentally, 36 is a lid of the bearing support member 37, and 38 is a communication hole.

The transmission mechanism 6 is configured such that the transmission pulley 60 provided on the input shaft 33 and the transmission pulley 61 provided on the power take-off shaft c are connected by a conduction belt, but the intermediate conduction wheel 62 is described above. The support frame 1 is provided so as to rotate coaxially with the fulcrum shaft 10 of the rocker frame 2, and the first conductive belt 63 is sprinkled on the intermediate conductive wheel 62 and the conductive pulley 60 provided on the input shaft 33. Furthermore, this intermediate conduction wheel 6
The power take-off shaft c and the input shaft 33 are conducted by winding the second take-up belt 64 around the power take-off shaft 2 and the conducting pulley 61 provided on the power take-out shaft c. This prevents the transmission belts 63 and 64 from being loosened when the vibration generator 3 swings together with the rocker frame 2 to which it is assembled. This means is omitted when using a flexible shaft or a universal joint shaft for the transmission mechanism 6.

As shown in FIG. 1, the hitch 4 for mounting the working machine is
A frame body 3 of an oscillating device 3 that is integrally assembled to the rocker frame 2
It is configured by mounting a bracket 40 on the lower surface side of 0, and mounting a cylindrical clamp 41 on the bracket 40. The clamp 41 holds the mounting portion of the desired working machine S in a tightly bound manner. is there. The hitch 4 for mounting the working machine only needs to be compatible with various kinds of working machines S, and may be appropriately configured such as a tool bar. Further, it suffices if it can move together with the frame body 30 of the vibration oscillating device 3 assembled to the oscillating machine frame 2, and as in the embodiment shown in FIG. May be installed.

There are various types of work machines S mounted on the work mounting hitch 4 as shown in FIGS. 1, 3, 5, and 7.

The working machine S ₁ shown in FIG. ₁ has a chisel 72 at the lower end side of a vertically long shank 71 having a blade portion 70 formed at the front edge.
Is a deep-cultivated plow provided in a single stage or multiple stages, and the vibrating device 3
When the drive generates vibrations in the up-down direction or the front-rear direction, the swing frame 2 swings around the fulcrum shaft 10 so that the chisel 72 moves in the front-rear direction and the up-down direction. It reciprocates in the combined direction and acts so as to crush the soil above them into soft and soft pieces as shown in FIGS. 1 and 2.

As a result, the traction resistance of the deep-plow work implement S ₁ is reduced to about 1/3, and the lightweight and compact walk-type agricultural tractor T can be sufficiently towed. The deep tillage work machine S ₁ can be attached to perform deep tillage work.

Next, the working machine S ₂ shown in FIG. 3 compacts the shoulders of the wall surface facing the ridges against cultivated ridges of crops such as beans and high-lying liquor that are prone to lodge so as not to collapse. It is a ridge ridge forming machine, and it has a cultivating plate-shaped main body consisting of a shear 74 and a cultivating plate 75.
Mold board 76.
In the rear view, as shown in FIG. 4, the mold board 76 is provided, and the mold board 76 is inclined so that the mold board 76 falls toward the cultivation ridge Y as it goes upward. The mounting member 77 is mounted by being fitted and tightly bound to the hitch 4 for mounting the working machine.

The working machine S ₂ used as this ridge forming device is a soil slab 75/75 for cultivating soil to be raised toward the cultivation ridge Y.
Inclined mold board 76, 76 continuous to 75
By the operation of reciprocating in the combined direction of the up-down direction and the front-rear direction by the vibration by the vibration generating device 3, while pushing toward the cultivation ridge Y, it is pressed downward to be solidified, and the shoulder portion of the cultivation ridge Y is not collapsed. It acts to tighten the state.

At this time, since the working machine S ₂ as the ridge forming machine and the vibration generating device 3 for vibrating the ridge forming machine are supported by the rocking machine frame 2 which rocks up and down, the cultivation ridge Y is tightly tightened and shaken. When the moving ridge forming device receives a strong reaction force, the vibration itself of the rocking machine frame 2 releases the reaction force, and the shoulder of the cultivation ridge Y does not cause damage to the ridge forming device. I will tighten the part tightly.

Next, the working machine S ₃ shown in FIG. 5 is a ridge forming machine for tightly tightening the shoulders facing the ridges of the strawberry cultivation ridge Y formed in a strip shape. 80
・ 80 is formed in the shape of a trapezoidal box that is inclined in the ridge Y toward the cultivation ridge and is inverted in a rear view, and the upper end side of the attachment member 81 is fitted into the hitch 4 for attaching the working machine. It is attached to the vehicle body a by tightly binding it, and in that state, by operating the agricultural tractor T, it is fitted into the ridges of the cultivation ridge Y as shown in FIG. 6, and the agricultural tractor T is run while operating the vibration generator 3. By doing so, the shoulder portion of the cultivated ridge Y facing the ridge is used so as to be tightly tightened.

When the working machine S _3, which is a ridge forming device for forming the cultivated ridges of the strawberry, is mounted, the agricultural tractor T has wheels w provided on the vehicle body a of the tractor T between the cultivated ridges Y and the ridges Y. 6th so that it is possible to run into the formed furrow Z
As shown in the figure, either a single wheel is used or the left and right wheels w are brought into a single wheel shape.

Next, the working machine S shown in FIG. 7 has the same structure as the working machine S _{2 in} the form of the ridge molding machine shown in FIG. 3 described above.

Next, FIG. 14 shows another embodiment of the means of the present invention. In this embodiment, when the walking type agricultural tractor T is used, the supporting machine frame 1 is assembled and attached to the connecting hitch b mounted on the front end of the agricultural tractor T, and the rocker frame 2 is attached thereto. Further, the vibration oscillating device 3 and the hitch 4 for mounting the working machine are provided, and when the working machine S is connected and mounted to the work machine S, the agricultural tractor T is moved backward to pull the working machine S. In this example, the mounting position of the supporting machine frame 1 to the agricultural tractor T is reversed from the front and back, which is the only difference from the above-described embodiment. And about the structure which does not change, the same code | symbol is attached | subjected to the component member of the same effect, and detailed description is abbreviate | omitted. In this embodiment as well, the work implement S to be mounted on the work implement mounting hitch 4 is the work implement S as shown in the embodiments of FIGS. 1, 3, 5, and 7. Are installed interchangeably.

As described above, the walk-type agricultural work vehicle according to the present invention includes a vehicle body a that can travel freely with wheels w, an engine e that drives the wheels w, and a handle h that is operated by an operator who walks and follows. Walking type agricultural tractor T
In the above, a supporting machine frame 1 is mounted on the front surface side or rear surface side of the vehicle body a, and the supporting machine frame 1 swings in the vertical direction or in a combined direction of the vertical direction and the front-back direction. 2 is supported, and a vibration device 3 having a plurality of unbalancer-type vibration mechanisms 3a mounted on the frame body 30 in parallel is mounted on the rocker frame 2, and is mounted on the rocker frame 2. Since the input shaft 33 of the vibrating device 3 is conductively connected to the power take-off shaft c of the engine e provided on the vehicle body a via the power transmission mechanism 6, it is possible to pull a deep-plow plow or the like. When a work machine with a large resistance is installed, the traction resistance of the work machine can be effectively reduced to about one-third, so it is possible to carry out deep-cultivation work by installing a deep cultivator with a lightweight and small walking type agricultural tractor. It also reduces the traction resistance of this work machine. The vibrating device for shaving works as it is as a vibrating device that vibrates the ridge forming device that taps and tightens the wall surface of the ridge by vibration or the ridge ridge forming device of a paddy field. I am able to work without wearing out of horsepower,
The range of use of walking type agricultural tractors can be significantly expanded.

[Brief description of drawings]

FIG. 1 is a side view of a walk-behind agricultural work vehicle in which the present invention is implemented, FIG. 2 is a rear view of the same, FIG. 3 is a side view of a state in which another working machine of the same is attached, and FIG. Rear view, same as above, 5th
FIG. 6 is a side view showing a state in which a further different working machine is mounted, FIG. 6 is a rear view of the same, FIG. 7 is a side view of another embodiment of the same, and FIG. FIG. 9 is a perspective view of the vibration mechanism, FIG.
Fig. 0 is a cross-sectional plan view of the same as above, Fig. 11 is a partially cutaway side view of the same as above, Fig. 12 and Fig. 13 are explanatory views of the operation of the same as above, and Fig. 14 is It is a side view of another Example. Explanation of drawing symbols G ... Gear, P ... Connecting pin S / S ₁ , S ₂ , S ₃ ... Working machine T ... Agricultural tractor, Y ... Cultivation ridge Z ... Furrow, a ... Vehicle body b ... … Coupling hitch, c …… Power take-off shaft e …… Engine, h …… Handle w …… Wheels 1 …… Spindle machine frame 1a …… Main body 1b …… Mounting part 10 …… Spindle shaft 2 ... ... Oscillator frame 3 ... Oscillating device, 3a ... Oscillating mechanism 30 ... Frame body, 31 ... Rotating shaft 32 ... Weight, 33 ... Input shaft 34/35 ... Through hole, 36 ... Lid 37 ... Bearing support member, 38 ... Communication hole 4 ... Hitch, 40 ... Bracket 41 ... Clamp, 5 ... Connection rod 6 ... Transmission mechanism, 60/61 ... Transmission pulley 62 ... Intermediate conduction Wheels, 63/64 ... Conduction belt 70 ... Blade, 71 ... Shank 72 ... Chisel, 74 ... Shear 75 ... Soil Plate, 76 ... Mold board 77 ... Mounting member, 80 ... Mold board 81 ... Mounting member

Claims (6)

[Claims] 1. A walking type agricultural tractor T comprising a vehicle body a which can be freely driven by wheels w, and an engine e which drives the wheels w and a handle h which is operated by an operator who walks and follows the vehicle body. The supporting machine frame 1 is mounted on the front surface side or the rear surface side of a, and the supporting machine frame 1 is supported by the rocking machine frame 2 that rocks in the vertical direction or in a combined direction of the vertical direction and the front-back direction. In the rocker frame 2, the vibration device 3 having a plurality of unbalancer-type vibration mechanisms 3a mounted on the frame body 30 in parallel is mounted and supported, and a hitch 4 for mounting a working machine is provided. A walk-type agricultural work vehicle in which an input shaft 33 of the vibration device 3 is conductively connected to a power take-off shaft c of the engine e provided on the vehicle body a via a transmission mechanism 6. 2. A fulcrum shaft 1 in which an oscillating machine frame 2 is provided on a supporting machine frame 1.
The intermediate transmission wheel 62, which is supported by the support machine frame 1 so as to swing and rotate in the vertical direction or a combined direction of the vertical direction and the front-back direction about the 0 center and rotates coaxially with the fulcrum shaft 10, is provided in the support machine frame. 1, the power take-off shaft c through the intermediate transmission wheel 62
The walkable agricultural work vehicle according to claim 1, wherein the input shaft 33 of the vibrating device 3 is electrically conductive. 3. A rotary shaft 31 of a vibration mechanism 3a of the vibration generator 3.
Are mounted on the frame body 30 of the vibrating device 3 such that their axial directions are in the left-right direction, and the frame body 30 of the rotary shaft 31 is
The walk-type agricultural work vehicle according to claim 1, wherein an input shaft 33 is provided at a protruding end portion of the above. 4. A walk-behind agricultural machine according to claim 1, wherein a plurality of vibrating mechanisms 3a mounted in parallel on the frame 30 of the vibrating device 3 are combined so as to generate a vibrating force in the vertical direction. Work vehicle. 5. A walk-type agricultural work according to claim 1, wherein a plurality of oscillating mechanisms 3a mounted on the frame body 30 of the oscillating device 3 in parallel are combined so as to generate an oscillating force in the front-rear direction. car. 6. A walk-behind agricultural work vehicle according to claim 1, wherein the hitch 4 for mounting the working machine is mounted on the frame body 30 of the vibrating device 3.