JPH1089U - Cultivator and rotary cultivator equipped with the cultivator - Google Patents

Abstract

(57) [Summary] (Modifications required) [Problem] A cultivator equipped with a partial forward / reverse rotary tilling device can be safely operated, has a simple transmission structure, and has a residual cultivation below the transmission case. Processing is performed advantageously. A machine is provided with a partial forward / reverse rotary tilling device, and a clutch lever provided at a hand of a control handle extending from the fuselage is formed on a loop lever along a loop portion of the control handle. The main clutch is disengaged when the operator releases the loop lever. Further, the chain transmission mechanism for driving the outer cultivating barrel 1 is housed in the thin transmission case 4, and the intermediate shaft 23 having the idle sprocket 22 meshing with the transmission mechanism is provided on the left and right walls of the transmission case. The bearings are supported so that the left and right shaft ends protrude laterally outside the case, and a pinion gear 21 is fitted from the outside,
Each of the pinion gears is engaged with a passive gear 20 formed at the inner end of the inner cultivating barrel 3 outside the case to drive the inner cultivating barrel.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a tiller equipped with a partial forward / reverse rotary tillage device, and a partial forward / reverse rotary tillage device.

[0002]

[Prior art]

 Conventionally, the rotary tilling device installed in a cultivator is installed with the inner cultivating shaft tube arranged on the side of the center drive transmission case and the outer cultivating shaft tube arranged laterally outside of it. It is known to constitute a rotating partly-rotating rotary device (for example, see Japanese Patent Publication No. 46-39041).

[0003]

[Problems to be solved by the invention]

 In a partial forward / reverse rotary device, the tilling claw mounted on the inner cultivation shaft cylinder and the cultivation claw mounted on the outer cultivation shaft cylinder rotate in opposite directions, so that the inner cultivation locating adjacent to each other is performed. It is easy for foreign objects, such as stone blocks, to bite between the cultivating claw on the barrel and the outer cultivating claw.In such a case, if the operation is not stopped immediately, the equipment may be damaged. It could be connected, but the conventional one did not respond to such a situation.

Further, in the conventional partial forward / reverse rotary apparatus, a transmission system for driving the inner cultivating barrel and a reverse transmission system for driving the outer cultivating barrel are integrated into the transmission case. However, since the power transmission system is complicated, the entire power transmission system becomes complicated, and the power transmission case becomes large.

[0005]

[Means for Solving the Problems]

 The present invention relates to a partial forward / reverse rotary tilling device in which an inner cultivating shaft cylinder disposed on the lateral side of a transmission case and an outer cultivating shaft cylinder disposed on the outer side of the transmission case rotate in opposition. And a loop-shaped clutch lever installed near the control handle that extends from the aircraft, and a deadman lever that automatically disengages the main clutch when the lever is released. With this configuration, when an abnormal situation occurs during the tillage work, the operation is immediately stopped to avoid damage to the device.

Further, in a rotary tilling device for rotatingly driving an inner cultivating shaft cylinder disposed on a lateral side portion of a transmission case and an outer cultivating shaft tube disposed on a laterally outward side thereof, The chain transmission mechanism that transmits power to the tilling shaft cylinder is housed in a thin transmission case, and an intermediate shaft equipped with idle sprockets that mesh with the chain transmission mechanism is mounted on the left and right walls of the transmission case. With the left and right shaft ends protruding from the lateral sides of the case, pinion gears are fitted to the shaft ends from outside, and each of the pinion gears is placed outside the transmission case. The transmission system and the transmission case are simplified by engaging a passive gear formed at the inner end of the inner tilling shaft cylinder to rotate and drive the inner cultivation shaft tube. The residual tillage treatment under the case can be advantageously performed.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. First, referring to FIG. 2, the overall configuration of the cultivator will be described. An engine (7) is mounted thereon, and the traveling wheels (8) are driven by power transmitted from the engine (7) to the axle via a transmission device in the transmission case. The driving operation is performed at the hand of the steering wheel (9). A rotary tilling device (R) can be detachably mounted on the rear side of the transmission case.

As shown in FIG. 3, the steering handle 9 is formed in a loop handle, and side clutch levers 10 and 10 are provided below the left and right grips for steering the fuselage. Is attached. A deadman clutch lever (11) is provided in a substantially U-shape in plan view and provided along the loop portion of the steering handle (9) so as to be vertically rotatable. ) (When held in the position shown by the solid line in FIG. 2), the main clutch of the cultivator is in the "engaged" state, and when the deadman clutch lever (11) is released, the virtual line in FIG. The main clutch returns to the position shown in the figure and is automatically set to the "cut" state.

The illustrated deadman clutch lever (11) is provided between the left and right base bodies (12) and (12), which are rotatably supported by a support portion provided on the steering handle (9). The connecting body (13) is connected in a loop shape so that the operation can be performed by holding the left and right base bodies (12) (12) and the connecting body (13) anywhere.

When the deadman clutch lever (11) is operated, the deadman clutch lever (11) as a whole or Safety measures such as forming a part with a soft elastic material or coating with a soft elastic material are provided.

In order to be able to simultaneously operate the side clutch levers (10) and (10) while gripping both the steering handle (9) and the deadman clutch lever (11), The required portions (11a) and (11b) of the deadman clutch lever (11) are bent and positioned close to the corresponding portion of the steering handle (9).

On the other hand, the rotary tilling device (R) is mounted so as to be interlocked and connected to a power take-out portion of the transmission case, and a transmission case (4) in which a claw shaft rotary is horizontally supported at a lower end portion. ), A beam (14) extending from the upper part of the transmission case (4), a tillage setting gauge (15) provided at the rear end of the beam (14), and a tillage cover. (16) and the like.

As shown in FIG. 1, the transmission case (4) is formed in a thin width in which only the chain transmission mechanism is accommodated. Bearing holders (17) and (17) are attached to the left and right lateral sides below the thin transmission case (4), and the horizontal and horizontal transmission shafts (2) are penetrated through these inner diameters to support the bearings. The output sprocket (not shown) of the power take-out section is located between the passive sprocket (18) inside the transmission case (4) and fitted to the center of the transmission shaft (2). A chain transmission mechanism that winds the chain (19) and rotationally drives the transmission shaft (2) is configured.

Outer diameter portions of the left and right bearing holders (17) are formed on inclined support portions which are inclined downward at a predetermined angle with respect to the horizontal axis of the transmission shaft (2). The left and right inner tilling shaft cylinders (3) and (3) are rotatably and tiltably supported on the support portion via bearings. Passive gears (20) and (20) are provided on the outer peripheral portion of the inner end of each of the inner cultivating shaft cylinders (3) and (3). ) Meshed with the pinion gears (21) (21) fitted on the support shafts (23) of the wales, and rotate the respective inner tilling shaft cylinders (3) (3) in the direction opposite to the transmission shaft (2). A driving reverse transmission mechanism is configured.

The support shaft (23) is supported by bearings on the left and right walls of the transmission case (4), and has a pinion gear () at a portion protruding outward from the left and right walls of the transmission case (4). 21) and (21) are fitted, and an idle sprocket (22) meshing with the chain (19) is fitted to a central portion in the transmission case (4), so that the transmission case (4) It is driven to rotate by a chain transmission mechanism. The pinion gears (21), (21), the passive gears (20), (20) and the like are formed by housing cases (24) (24) provided on the left and right sides of the transmission case (4). It is housed in an oil-sealed structure.

[0016] (1) (1) is an outer cultivation shaft cylinder fitted and fixed to the transmission shaft (2) outside the inner cultivation shaft cylinders (3) and (3). The tilling claws (25) are mounted in a predetermined arrangement, and the outer cultivating shaft cylinders (1) and (1) and the inner cultivating shaft cylinders (3) and (3) described above are used to mount the claw shafts. -Tari is configured. (A) shows the rotation direction of the tilling claw attached to the horizontal tilling claw shaft cylinder, and (B) shows the rotation direction of the tilling claw mounted on the inclined tilling claw shaft cylinder.

[0017]

[Effect of the invention]

 In the cultivator according to the first aspect of the present invention, the machine body is equipped with a partially forward / reverse rotary cultivator, and a loop-shaped clutch lever provided at the hand of a steering handle extending from the machine body is provided. The main clutch is automatically turned off when the lever is released, so if an abnormal situation occurs during tilling work, the operation stops immediately just by releasing the deadman lever. It is possible to work safely because damage to the equipment is avoided.

According to a second aspect of the present invention, there is provided a rotary tillage device that rotationally drives an inner tillage shaft tube disposed on a lateral side of a transmission case and an outer tillage shaft tube disposed laterally outward of the transmission case. In a rotary tilling device, a chain transmission mechanism for transmitting to an outer cultivating shaft cylinder is housed in a thin transmission case, and an intermediate shaft having an idle sprocket meshing with the chain transmission mechanism is mounted on a transmission case. The left and right shafts are supported by bearings on the left and right walls, and the left and right shaft ends protrude from the lateral sides of the case.Pinion gears are fitted to the shaft ends from outside, and each pinion gear is transmitted. Since the reverse rotation transmission mechanism that rotates the inner cultivation shaft cylinder by meshing with the passive gear formed outside of the case and at the inner end of the inner cultivation shaft cylinder is configured, the transmission system and the transmission caseス is simplified, and the residual tillage treatment under the transmission case can be advantageously performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a main structure of the device of the present invention.

FIG. 2 is an overall side view of a cultivator implementing the device of the present invention.

FIG. 3 is a plan view illustrating a steering handle portion of the cultivator.

[Explanation of symbols]

 R Rotary tilling device 1 Outer cultivating shaft tube 2 Transmission shaft 3 Inner cultivating shaft tube 4 Transmission case 5 Tilling claw 9 Steering handle 11 Clutch lever 20 Passive gear (reverse transmission mechanism) 21 Pinion gear (reverse transmission mechanism) 22 Idle sprocket 23 Intermediate shaft 24 Housing case 25 Tilling claw

Claims (2)

[Utility model registration claims] 1. An inner cultivating shaft cylinder disposed on a lateral side of a transmission case (4) and an outer cultivating shaft cylinder disposed laterally outward of the inner cultivating shaft cylinder.
(1) Equipped with a rotary tilling device (R) that rotates in a manner opposite to that of (1), and a steering handle that extends from the aircraft.
The loop-shaped clutch lever (1) installed at the hand of (9)
A tilling machine characterized in that 1) is configured as a deadman lever in which the main clutch is automatically disengaged when the lever is released. 2. An inner cultivating shaft tube (3) disposed on the side of the transmission case (4) and an outer cultivating shaft tube disposed laterally and outwardly thereof.
(1) In a rotary tillage device for rotating (1) in a reverse manner, a chain transmission mechanism for transmitting the outer plowing shaft cylinders (1) and (1) is provided in a thin-width transmission case (4). Idle sprocket (22) that stores and meshes with the chain transmission mechanism
An intermediate shaft (23) provided with bearings is supported by bearings on the left and right walls of the transmission case (4) so that the left and right shaft ends protrude from the lateral sides of the case. Pinion gear from outside (21)
(21), and each pinion gear (21) (21) is
The inner cultivating shaft cylinder (3) (3) (3) is engaged with the passive gears (20) (20) formed outside the transmission case (4) and at the inner end of the inner cultivating shaft cylinder (3) (3). 3) A rotary tillage device which constitutes a reverse rotation transmission mechanism for driving the rotation.