JPS61192209A - Power agricultural machine for paddy field - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a power agricultural machine for paddy fields that can be used by selectively attaching a working machine such as a rice transplanter.

(Prior technology) Rice transplanters are widely used, which are equipped with a ground float and propulsion wheels that are movable up and down on the machine body, and a seedling planting section with a seedling tank and planting rods at the rear of the machine body. has been done.

(Problems to be Solved by the Invention) Conventionally, when performing work other than rice transplanting, such as sowing or fertilizing, work devices such as a sowing device and a fertilizing device were additionally attached to the rice transplanter as described above. However, since extra work equipment was installed, the overall size of the system was large and it was often inconvenient to use.

In addition to rice transplanters, there are also specialized machines such as seeders, rush transplanters, and seedling transplanters that are equipped with similar running devices, but it is uneconomical to prepare a dedicated machine for each task. .

(Problems to be Solved by the Invention) In order to solve the problems described above, the present invention employs the following configuration.

That is, the rice field power machine A according to the present invention is equipped with a prime mover and a transmission case at the front, a ground float that moves downwardly at the bottom, and a hydraulic device that is operated by the vertical movement of this ground float. The traveling body that controls the vertical movement of the propulsion wheels is provided with a control handle extending rearward and upward from the rear end of the body, and a P
In addition to providing a TO axis, on the upper side of the control handle,
A work equipment mounting part is provided to which a work machine such as a rice transplanting device or a seeding device can be selectively mounted, and power is directly transmitted from the PTO shaft to the work machine mounted on the work equipment mounting part. It is characterized by being configured so that

(Function) A removable work implement is attached to the work implement attachment part on the upper side of the handle as necessary, and is moved by the traveling machine body, and rotational power for driving the work machine is supplied from the PTO shaft of the traveling machine body. communicated.

(Example) The embodiments shown in the drawings will be described below.

This paddy field power dust I11 has a prime mover 3 installed at the front of a traveling body 2, and a transmission case 4 and a hydraulic device 5 at the rear thereof. A rotatably supported cylindrical housing 7.7 is protruded from both side surfaces of the transmission case 4, and a shaft 9 rotated by a prime mover is housed inside the housing. Housing 7.7 has an arm that protrudes upward? a,? a is provided integrally,
Hydraulic cylinder 12.1 attached to the fuselage by shaft 11
Two piston rods 13' and +3 are connected.

A chain case 15.15 extending rearward is attached to the tip of the housing 7.7, respectively.
When the cylinder 12.12 is expanded and contracted to rotate the housing 7.7, the chain case 15.15 is rotated up and down.

A sprocket wheel 17 housed in a chain case 15 is fixed to the tip of the shaft 9 in the housing 7, and a sprocket wheel 17' of an axle 19 supported on the opposite end of the chain case 15 and a chain 18
are tied together. A propulsion wheel 20 is attached to the axle 18 .

A pair of left and right front floats 23° 23 and a center float 25 are provided at the bottom of the fuselage. The front float 23 has its rear end pivotally connected to the machine body by a shaft 26, and its front end suspended from the machine frame 30 by a link 28 and a pin 28 loosely fitted into an elongated hole 28a of the link. A vertical movement detection rod 33 is pivotally attached to the front part of the front float 23.
One end of the detection rod is connected to a rotating shaft 34. The rotating rod 34 is connected by a connecting rod 35 to a rotating arm 37 that rotates a valve shaft 36 of a hydraulic switching valve (2) in the hydraulic device 5. The end of the rotating arm 37 on the opposite side of the valve shaft 36 is connected to a hydraulic operating lever 40 by a wire 41, so that the hydraulic switching valve can be switched by the operating lever.

When the front part of the front float 23 moves relative to the aircraft body, the rotating arm rotates and switches the hydraulic switching valve V in the direction of extending the hydraulic cylinder 12 on the side of the float that has moved, so that side wheels 20 are lowered, and conversely, the front float 2
3 is lowered, the rotating arm rotates in the opposite direction and switches the hydraulic switching valve V to raise the wheel 23 on that side. Power is transmitted to the hydraulic system 5 from the prime mover 3 via pulleys 43 , 43 ′ and a belt 44 . In this way, the propulsion wheel can be moved up and down in response to changes in the depth of the tiller. Note that the connecting rod 35 is provided with a buffer coil spring 45 that absorbs minute -1- downward movement of the float 23.

The rear center float 25 is pivotally connected to the handle 50 by a support member 48 and a shaft 49 provided in the middle. Further, the front end of the center float 25 has an elongated hole 52a.
The attached link 52 and the pin 5 loosely fitted into the elongated hole 52a.
3 to the mission case 55 of the aircraft. The transmission case 55 extends rearward from the rear end of the front transmission case 4, and the base of the handle 50 is fixed to the rear end. A drive shaft 57 that transmits rotational power from the transmission device in the transmission case 4 is housed inside the transmission case 55, and the rear end of the drive shaft is
It is connected to a PTO shaft 60 via a bevel gear device 59.

The handle 50 includes a pair of left and right handle rods 50a and 50b.
The base A is fixed to the rear end of the transmission case.
It descends slightly from the horizontal part to become a horizontal part B, and from the horizontal part becomes an extension part C that extends rearward and upward while opening left and right. The middle parts of the handles 50 are connected to each other by transverse reinforcing members 61. A horizontal bar 63 for mounting a panel is provided at the top of the handle 50, and an operation panel 64 can be accessed from this horizontal bar 63.

The portion of the extension C of the handle 50 from the lower end to a position considerably above the reinforcing member 61 in the middle portion is
It is formed parallel to the TO axis 60, and its upper portion serves as a work machine mounting portion 65. Further, the rear end surface 55a of the mission case from which the PTO shaft 60 protrudes is formed perpendicular to the PTO shaft 60. A rotary key-shaped locking tool 67 is provided at the rear end of the mission case 55.

FIGS. 3 and 4 show an example in which a rice transplanter 70 as a working machine is attached to the power agricultural machine 1. This rice transplanter includes a transmission case 71 and a support frame 72 integrated with the transmission case, and a planting rod 73 is provided on the side of the transmission case, and an arm 75 for laterally moving a seedling tank 74 is provided. There is. The seedling tank 74 is supported by guide rails 78 and 78' provided on the support frame 72 so as to be able to reciprocate laterally. The planting 1 rod 73 remains stationary downward by the action of a link device 77 that is moved by a transmission device in the transmission case, and the seedlings are taken out one by one from the seedling mat held in the seedling tank 74. Then, plant them in the field.

A retaining portion 72a having a U-shaped cross section is provided at the end of the support frame 72, and an engaging protrusion 71a protruding laterally is provided on the transmission case 71. Also, is there an opening in the lower front end surface 7C of the transmission case 71? , 1b, and an input bevel gear 78 spline-fitted with the PTO shaft 60 is supported at these positions.

This rice transplanter 70 has an opening lower 1b of a transmission case 71.
It is attached to the work equipment attachment part 65 of the traveling machine body 2 from two directions, ``from the rear'' toward the PTO axis 60. In this case, it is convenient to make the PTO axis BO and the handle 50 of the work machine mounting part parallel to each other as shown in the illustrated example, since the work machine can be attached and detached along the handle 50.

The bevel gear 78 is fitted onto the PTO shaft 60, and the power of the PTO shaft is transmitted to the planting transmission device inside the transmission case 71. The rice transplanter 70 locks the engaging portion 72a of the support frame 72 to the reinforcing member 61 and engages the locking tool 67 with the front lower end surface 7c of the transmission case 71 in close contact with the end surface 55a of the mission case 55. It is firmly fixed to the traveling body 2 by engaging with the protrusion 71a. Note that the clutch 78 of the planting device has a clutch lever on the panel 64.
80 are connected by a wire 81.

When removing the attached rice transplanter 70, use the locking tool 67.
from the engagement protrusion Via, remove the wire 81 of the clutch lever 80 from the clutch 78, and lift the rice transplanter 70 backward and upward along the handle 50. In this way, the working machine Rice Ue I! Attaching and detaching the 70 is extremely easy.

FIG. 5 shows an example in which a seeding machine 85 is installed as a working machine. The sowing machine 85 is equipped with a hopper 86 for holding seeds and a support frame 87 similar to that of the rice transplanter 70, and a scarlet seed pipe 88 facing the ground is provided at the lower end of the hopper 86. A sowing roll 88 is provided at the boundary between the hopper 86 and the seed discharge tube 88 to sequentially send out appropriate amounts of seeds in the hopper. Transmission case 90 provided at the front lower part of hopper 8B
As in the case of the rice transplanter, an opening 90a is formed in the rice transplanter, and an input bevel gear 91 is supported inside. The bevel gear 81 meshes with a driven bevel gear 92, from which a chain 93 is connected.
Power is transmitted to the seeding roll 89 via. The transmission case 90 is provided with an engagement protrusion 90a, and one of the support frames 87
One end portion is a U-shaped engaging portion 87a.

As in the case of the rice transplanter 70, this seeding machine 85 also has an input bevel gear 91 spline-fitted to the PTO shaft, an engaging portion 87a engaged with the reinforcing member 61 of the handle 50, and a locking tool 67. By engaging the engagement protrusion 9 (la), the clutch lever 80 is firmly attached to the traveling body 2 by a detachable wire 81. The procedure for removing the installed sowing machine 85 is the same as that for the rice transplanter 70.

Note that a groove B4a into which the clutch lever can be fitted from the front is formed on the upper surface of the panel 64, and the sixth
As shown in the figure, when installing a work machine that is integrally equipped with a clutch lever 80' for the work machine (Rice Ue 41!70' in the illustrated example), the clutch lever 80' is inserted into the groove E.
14a and may be used. In this way, the effort of attaching and detaching the clutch operation wire 81 to and from the clutch of the working machine is eliminated, making the operation of attaching and detaching one working machine easier.

(Effects) As is clear from the above description, the power vehicle machine according to the present invention is economical and convenient because working machines for different purposes can be selectively attached and used. As the working machine, various types can be adopted in addition to the above-mentioned embodiments.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the power agricultural machine for rice fields according to the present invention, Fig. 2 is a plan view thereof, and Figs. 3, 4, 5, and 6 show how to attach the working machine. FIG.

Claims (1)

[Claims] (1) The driving body is equipped with a prime mover and a transmission case at the front, a ground float is provided at the bottom that moves up and down, and the propulsion wheels are controlled up and down by a hydraulic system operated by the up and down movement of this ground float. A control handle is provided that extends rearward and upward from the rear end of the aircraft, and a PTO shaft is provided at the front of the control handle, and a working machine such as a rice transplanter or a seeding device is installed on the upper side of the control handle. A work equipment mounting part to which the PTO shaft can be selectively mounted is provided, and power is directly transmitted from the PTO shaft to the work machine mounted to the work equipment mounting part. Powered agricultural machinery for paddy fields.