JPS606163Y2 - Soil improvement work vehicle - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a soil improvement work vehicle that improves the soil by digging ladders placed on the ground surface into the ground.

An object of the present invention is to provide a soil improvement vehicle that can reliably plow ladders installed on the ground surface into the ground.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a tractor that can move freely by an undercarriage 3 having crawler tracks 2. At the front of the vehicle body 1a is an engine (not shown) whose output can be switched to multiple stages, for example, two stages, and behind the engine is a tractor that can be operated. There are 5 seats each.

At the front of the vehicle body 1a, a support boom 6 whose base end is pivotally supported by the vehicle body 1a is provided to protrude forward.
A main body 7a of a fertilizer spreader 7 is pivotally attached to the tip of the support boom 6 by a pin 8.

The fertilizer spreader 7 is composed of a main body 7a containing rotary blades 9, and a hopper 10 located above the main body 7a and containing the fertilizer to be spread. A shutter 11 is installed which can be opened and closed by operation.

Further, the rotary blade 9 housed in the main body 7a is connected to the hopper 10.
The output shaft 12a of the speed reducer 12 is fixed to the output shaft 12a of the speed reducer 12.

The reducer 12 is fixed to the main body 7a by a bracket 13, and a rotation source 14 such as a hydraulic motor is connected to the input shaft 12b of the reducer 12, and a rotation source 14 such as a hydraulic motor is supplied from the tractor 1 side via a pipe 15. The rotary blade 9 is rotatably driven by hydraulic pressure applied thereto.

The casing 7b that houses the rotary blades 9 is formed into a substantially conical shape, and serves to guide the fertilizer scattered by the rotary blades 9 obliquely downward, and a rubber plate or the like is formed around the casing 7b. The scattering prevention skirt 7C further prevents the fertilizer from scattering.

On the other hand, the upper end side of a link 17 whose base end is pivotally supported by the support boom 6 is pivotally attached via a pin 18 to the upper end side of a frame 16 that connects and integrates the main body 7a and the hopper 10.

A plurality of pin holes 17a are bored on the upper end side of the link 17, and by selecting these pin holes 17a, the hopper 10 can be maintained horizontally regardless of the height of the main body 7a. The tip of a piston rod 19a of a lift cylinder 19 rotatably attached to both sides of the front portion of the tractor 1 is pivotally attached to the base end side of the link 17.

Further, one end of the wire 20 is tied to this pivot portion.

The middle part of the wire 20 is attached to a bracket 21 at the front of the tractor 1.
After bypassing the pulley 22 supported through the support boom 6 and the pulley 23 supported approximately in the middle of the support boom 6, the fertilizer spreading machine 7 is locked to the shaft of the pulley 22, and as the lift cylinder 19 expands and contracts, the fertilizer spreading machine 7 is moved up and down in the direction of the arrow in the range between the solid line and the imaginary line in FIG.

On the other hand, a rotary 25 is attached to the rear portion of the vehicle body 1a of the tractor 1 via a three-point pitch mechanism 24.

The three-point hitch mechanism 24 includes a connecting frame 27 attached to the steering case 1b of the tractor 1 via a bracket 26, a hitch cylinder 28, and a link 29 to which the tip of a screw I/rod 28a of the hitch cylinder 28 is connected.
Therefore, the base end of the link 29 is pivotally attached to the upper part of the bracket 26.

Further, the tip of the link 29 and the connecting frame 27 are connected to each other via a turnbuckle 30 whose length can be adjusted freely, and the rotary 25 can be moved up and down by the hitch cylinder 28, and the rotary 25 can be moved up and down. The tillage depth can be freely set using a height-adjustable gauge plate 31.

Further, the rotary 25 is connected to the output take-out portion (
(not shown) via a power shaft 32 and a chain 33.

Note that 34 is a rotary cover. That is, a mounting frame 36 is fixed to the connecting frame 27, and the rotary 25 is rotatably supported on the mounting frame 36 via a shaft 37, and the shaft 37 is connected to a sprocket 38 and a chain 3.
The power is transmitted to the power shaft 32 via the sprocket 39, the shaft 40, and the transmission mechanism 41, and the cutter 25a is connected to the shaft 37.
are fixedly installed in multiple radial shapes.

Further, on both sides of the mounting frame 36, support rods 42 equipped with the gauge plate 31 are fitted into a cylinder 43 so as to be movable up and down, and positioning holes 44 are formed in the support rods 42 at intervals in the vertical direction. The cylindrical body 43 is provided with a large number of holes, and the pin 45 is used to connect the cylindrical body 43
is fixed.

Further, a pair of cylinders 46 are fixedly installed on both sides of the mounting frame 36, and a support rod 47 is fitted into each cylinder 46 so as to be vertically movable. A plurality of holes are formed at intervals in the direction and fixed at a predetermined position with pins 49.

A cylinder 50 is fixed to the lower ends of the pair of support rods 47,
A piston 51 is provided in the cylinder 50 so as to be movable up and down and kept biased downward by a spring 52, and a mounting piece 53 is suspended and fixed to the piston 51.
Both ends of a presser roller 54 are rotatably supported horizontally on a pair of left and right mounting pieces 53 to constitute a presser mechanism 55 .

The presser roller 54 is formed with a large number of protrusions 56, 56 that are diagonal in opposite directions with the central portion in the longitudinal direction as a boundary.

However, the vines that have been laid on the ground in advance are rotary 25
It can be cut and simultaneously dug into the ground, improving the soil.

At this time, the presser roller 54 is maintained downwardly biased by the spring 52 and presses the vines against the ground surface, so even if the plowing depth is shallow, the rotary 25 can reliably cut the vines, and the speed of the work vehicle can be increased. Even if the vehicle speeds up, the ivy is prevented from being pushed in the direction of travel of the vehicle and deposited in front of the rotary 25, so that the ivy can be reliably cut and plowed.

Furthermore, if there is an obstacle such as a boulder on the ground and an upward overload is applied to the presser roller 54, the presser roller 54 can be moved upward against the spring 52 to absorb the overload, thereby preventing damage to the presser roller 54.

In addition, since the presser roller 54 can move and adjust the support rod 47 in the vertical direction, the ivy can always be reliably pressed against the ground surface even if the depth of tillage changes.

Note that vines are organic matter such as reeds, grass, and bamboo.

Furthermore, according to the embodiment of the present invention, the rotary blade 9 is rotated by the rotary drive source 14 while the fertilizer to be laid is accommodated in the hopper 10, and at the same time, the plowing depth is set to an arbitrary depth by the gauge plate 31. The rotary 25 is rotated to move the tractor 1 forward.

The fertilizer stored in the hopper 10 is scattered by the rotary blades 9 and uniformly spread in front of the tractor 1.

The amount of spraying can be freely adjusted by adjusting the opening degree of the shutter 11 from the driver's seat 5.

As the tractor 1 passes, the fertilizer spread in front of the tractor 1 is plowed into a constant depth at the same time as tilling by a rotary 25 provided at the rear of the tractor 1.

As a result, plowing, laying of fertilizer, and plowing can be done in one step, and work efficiency is further improved compared to the conventional case where these tasks were performed in separate steps.

Therefore, the fertilizer was uniformly spread by a fertilizer spreader installed at the front of the car body, and then plowed to a certain depth by a rotary installed at the rear of the car body at the same time as tilling. Conventionally, these operations were performed in separate processes. Work efficiency is further improved compared to before.

In addition, the amount of fertilizer applied can be easily adjusted by operating from the driver's seat, and even if the amount of fertilizer applied is small, it can be spread evenly by scattering it with rotary blades, and the fertilizer spreader can be attached. This makes it possible to easily attach it to an existing tractor and perform fertilization work, further increasing the versatility of the tractor.

In addition, the fertilizer is granular or powdered fertilizer such as Keifun or lime.

The present invention is as described above, and ladders laid on the ground surface can be cut by the rotary 25 and plowed into the ground reliably.

In addition, since the ladders can be pressed by the presser roller 54 provided on the mounting piece 53 that is biased downward, the ladders can be reliably cut by the rotary 25 even when the plowing depth is shallow, and the speed of the work vehicle can be increased. Even if the vehicle speeds up, the ladders are pushed in the traveling direction of the vehicle, and the ladders are prevented from being piled up in front of the rotary 25, so that the ladders can be reliably cut and plowed.

Further, when there is an obstacle such as a boulder on the ground surface and an upward overload is applied to the presser roller 54, the attachment piece 53 moves upward against the force, thereby preventing the presser roller 54 from being damaged.

Furthermore, if the pin 49 is removed, the support rod 47 is slid along the cylindrical body 46, and the pin 49 is inserted again into a different positioning hole 48, the support rod 47 can be moved up and down with respect to the mounting frame 36. The presser mechanism 55 can be moved up and down with respect to the mounting frame 36, and even if the depth of tillage is changed by swinging the mounting frame 36 up and down and moving the rotary 25 up and down, the presser mechanism 55 is always in contact with the ground surface. This allows you to firmly press the ladder.

[Brief explanation of the drawing]

FIG. 1 is an overall front view showing an embodiment of the present invention, FIG. 2 is a front view of section A, and FIG. 3 is a sectional view taken along the line ■--■ in FIG. 1 is a tractor, 25 is a rotary, 36 is a mounting frame,
55 is a presser mechanism.

Claims (1)

[Scope of utility model registration request] A connecting frame 27 is attached to the rear of the vehicle body 1a of the tractor 1 so as to be swingable up and down using a hitch cylinder 28, etc., and a mounting frame 36 is fixed to this connecting frame 27.
The rotary 25 is rotatably mounted on the mounting frame 36, and a cylindrical body 46 is fixed to the mounting frame 36 at a position where the rotary 25 approaches the vehicle body 1a. A support rod 47 on which a plurality of positioning holes 48 are formed is slidably inserted thereinto, and this support rod 47 is fixed to the cylinder body 46 by a pin 49 fitted in a positioning hole 48. A mounting piece 53 is attached to the lower end of the mounting plate 53 so as to be slidable in the longitudinal direction and kept biased downward by a spring 52.
The presser mechanism 55 rotatably supports the presser roller 54.
A soil improvement work vehicle characterized by comprising: