JPS5926487B2 - walk-behind reaper - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a right hand grip part and a left hand grip part on the left and right sides of the steering bundle, respectively, and a delivery device for delivering the harvested stem culm to the side of the machine body. Equipped with, furthermore,
This invention relates to a walk-behind reaper that is equipped with a grip operation lever for turning the machine body in a forward state to turn left or right, a forward switching operation tool for switching the machine body to forward movement, and a reverse movement switching operation tool for switching the machine body to reverse movement.

When using this type of walk-behind reaper to perform so-called circular mowing, in which the machine rotates around the outside of the field and then cuts sequentially inward, if the mowing reaches the edge of the field, only one corner of the field can be harvested. For example, as shown in Figure 5, with a walk-behind reaper that sends out the harvested culms to the right, the field is reaped counterclockwise. When the aircraft turns at a part of a corner, the aircraft normally turns by drawing a turning trajectory as shown by arrows A22B and C. In the path shown by arrow A, the aircraft performs an operation to turn left, and the aircraft turns as shown in arrow I. At the moment when the arrow turns from arrow to arrow, the aircraft must be operated to reverse at the same time as the right turn operation is performed, and at the moment when the arrow changes from arrow to ha, the aircraft must cancel the right turn operation and at the same time switch the aircraft to reverse. It is necessary to switch to forward movement, and during the instantaneous transition from arrow A to arrow A or from mouth to C, it is necessary to simultaneously perform the switching operation for turning the aircraft to the right or left and the switching operation for moving the aircraft forward or backward at the same time. In a type reaper, although the operator must support the machine to some extent with his/her hands, the two types of operations mentioned above must be carried out instantaneously and simultaneously with the operator's hands. However, it has a built-in self-contradiction in that it requires two conflicting maneuvering modes, and it also has the problem of requiring extremely advanced maneuvering skills from the pilot.

The present invention almost eliminates the above-mentioned problems by devising the arrangement of the forward and backward switching control levers of the machine and the right-turn and left-turn control levers, thereby making it easier to turn the machine in a part of a field corner. The purpose is to

That is, in the above-mentioned walk-behind reaping machine, the present invention provides a grip operation lever for rotating the stalk culm feeding direction, which rotates the moving body in the forward state in the same direction as the reaped stalk culm feeding direction by the feeding device. At the same time, the forward switching operating tool is provided near the grip operating lever for turning the stalk culm feeding direction, and the forward switching operating tool is provided on the grip part on the opposite side of the forward switching operating tool to control the cutting stalk in the forward state. It is characterized in that a grip operation lever for turning the stem culm in the opposite direction to the culm sending direction is provided, and the backward switching operation tool is provided near the grip operation lever.

In other words, the direction of rotation of the reaper during circular cutting is determined by the direction in which the reaped culms are sent out, and because of the desire to send out the reaped culms toward the already cut field, the rotation direction is opposite to the direction in which the reaped culms are sent out. In this case, when turning the machine at the edge of the field, there is a grip operation lever for turning in the direction opposite to the feed direction of the stem culm. , so that at the same time as you let go of the grip operation lever for turning the stem culm in the opposite feeding direction, you can operate the backward switching operation tool with that hand. It is possible to grasp and operate the grip operation lever for turning the stem culm feed direction with the hand on the side, and while supporting the machine with the hand, the switching operation of the machine right/left turn and the switching operation of the machine forward and backward are synchronized and instantaneous. It can be done.

Furthermore, when switching from backward movement to forward movement with the machine bent in the cutting culm feeding direction, as described above, the grip control lever for turning in the cutting culm feeding direction is released and the control lever is pressed. The forward switching operation device can be operated with a hand, and the hand on the opposite side to the hand that operates the device can grasp the grip of the control bundle to support the aircraft.In addition, the grip for turning the aircraft can be Even when operating the operating lever, since it is a hand-held operating lever, it can be operated while supporting the aircraft body to some extent.

In short, the present invention makes it possible to support the machine to a certain extent by regulating the arrangement of the operating levers for turning the machine to the left and right and moving the machine forward and backward, which are determined by the feeding direction of the harvested stem culm, as described above. The most important feature of both of these is that the machine can be quickly and easily turned in a part of a field corner.

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

The figure shows an engine 1, a traveling transmission case 2, one propulsion wheel 4 pivotally supported at the lower end of a transmission case 3 extending from the mission case 2, a steering bundle 5 extending rearward, etc. A two-wheeled walking type binder is shown in which a reaping binding section is connected and equipped at the front of the traveling machine body, and the reaping binding section is configured to carry out reaping processing as described below as the binder advances.

That is, the front lifting device 6 lifts the planted stem culm into an upright position, the reaping device 7 cuts off the base end of the plant, and the shaft-cut stem culm is placed laterally along the guide cover 8. The bundled stem culms are sent out and conveyed by the delivery device A to the bundled binding device 9, and after converging and binding in appropriate amounts, the bundled stem culms are sequentially discharged toward one side of the machine body.

As shown in FIG. 2, the transmission case 2 is equipped with a gear transmission as a device for changing the traveling speed in stages.

That is, the first shift gear 11 is spline-coupled to a drive shaft 10 that is constantly rotationally driven so as to be movable in the axial direction.
If you operate it from the neutral position to the right side as shown in the example, it will move forward 1.
When the second shift gear 12, which is spline-coupled to the drive shaft 10 so as to be movable in the axial direction, is operated from the illustrated neutral position to the right, the second shift gear is set to the forward speed. It is configured so that when the vehicle is in this state and the vehicle is operated to the left, the vehicle is in the third forward speed state.

Next, the operating structure of the first and second shift gears 11, 12 will be explained.

That is, first and second sliding shafts 13 and 14 are supported in the mission case 2 so as to be movable in the axial direction, and shift forks 13a and 1 are fixed to these shafts 13 and 14.
4a are respectively engaged with the shift gears 11 and 12, and a transmission lever 15 is pivotally supported on the transmission case 2 so as to be able to swing vertically and horizontally.
It is configured to be selectively engaged with the engaging portions 13b and 14b of the outer projecting end of the case.

Then, as the lever 15 is swung downward and then swung left and right to operate the first sliding shaft 13, the first shift gear 1
1, the lever 15 is swung upward and then swung left and right to operate the second sliding shaft 14, thereby operating the second shift gear 12.

Further, the first shift gear 11 is connected to the lever 15 as described above.
The electric motor 21 is configured to be operated not only by the electric motor 21 but also by the forward and reverse operation of the electric motor 21 as described below.

That is, a cam follower shaft 17 is supported by the mission case 2 so as to be movable in the axial direction and rotatable around the axial center. They are interlocked and connected via an arm 18 that swings at the center.

The connection between the arm 18 and the shaft 17 is an engagement connection structure that allows rotation of the shaft 17 around its axis.

The shaft 17 has a first cam follower 1 that comes into contact with the first rotating body 19a fixed to the drive shaft 10 from the axial direction side.
9b, and the transmission shaft 16 supported by the transmission case 2.
A second cam follower 20b is fixedly attached to the second rotating body 20a, which is rotatably supported by the cam follower 20a and is in contact with the second rotating body 20a from the axial direction side.

These cam followers 20b and 19b are alternatively connected to the first and second rotating bodies 19a as the shaft 17 is rotated in forward and reverse directions.
, 20a, the mounting positions in the circumferential direction relative to the shaft 17 are different.

The first and second rotary bodies 19a and 20a include inclined pressing cam surfaces for pressing and moving the cam followers 19b and 20b in the axial direction and in mutually different directions, and a cam follower 19b that has been pressed and moved. , 20b
cam follower 20b to the stabilizing cam surface in a state following the stabilizing cam surface and the pressing cam surface for stably maintaining the
, 19b are formed.

FIG. 4 shows the first rotating body 19a, where S is a pressing cam surface, T is a stabilizing cam surface, and U is a guide surface.

A reversible electric motor 21 for rotating the shaft 17 in forward and reverse directions is interlocked with the end of the shaft 170 that projects outside the case.

This motor 21 is connected to the first switch 2 as shown in FIG.
When the second switch 2a is closed, the electromagnetic relay R1 is operated for the charging time of the capacitor 23a, and its relay contact r1 is switched to rotate forward, and when the second switch 22b is closed, the capacitor 23b is charged. The electromagnetic relay R2 is activated for a certain amount of time, and its relay contact r2 is switched to reverse rotation.

Turn on the first switch 22a and the second switch 22b
, when the OFF operation is performed, as shown in FIG.
The first switch 22a for forward movement is operated by the forward switching operation tool 24a provided on the right hand grip portion 5'a formed on the right side of the handle 5, and the left hand grip portion formed on the left side of the handle 5. 5'b is configured to operate the second switch 22b for backward movement with the reverse movement switching operation tool 24b provided at It is.

In other words, with this type of binder, the mowing is done counterclockwise due to the arrangement of the binding device 9, and the direction is changed at the edge of the field as shown by the arrow in Figure 5. In this case, the mowing is carried out on two wheels. In the forward movement of , A, the grip operation lever 25b that operates the left steering clutch is gripped, and in the backward movement of the mouth, the grip operation lever 25a that operates the right steering clutch is gripped.

Therefore, if the forward switching operating tool 24a and the reverse switching operating tool 24b are arranged as described above, the switch operation for switching forward or backward will be performed with the hand that is not operating the clutch, and the steering The operation and the forward/backward switching operation can be easily and easily carried out separately with the left and right hands, and the gear change operation can be carried out while supporting the bundle 5 and maintaining the stability of the aircraft attitude.

Furthermore, the present invention may be used to perform gear shifting in three or more stages, including a neutral position.

[Brief explanation of the drawing]

The drawings show an embodiment of a walk-behind reaper according to the present invention.
The figure is an overall side view, Figure 2 is a longitudinal rear view of the transmission, Figure 3 is a motor control circuit diagram, Figure 4 is a perspective view of the first rotating body, and Figure 5 is an overall plan view. be. 5...Maneuvering bundle, 51a, 51b...
... Grip part, A ... Feeding device, 25a, 2
5b...Grip operation lever, 24a...
Forward switching operating tool, 24b... Reverse switching operating tool.

Claims (1)

[Scope of Claims] 1. Control: Right hand grips 5' on the left and right sides of the handle 5, respectively.
A and a grip part 51b for the left hand are formed, and a feeding device A is provided to send out the cut stem culm to the side of the machine body, and further, a grip operation for turning the machine body to turn the machine body in the forward state to the left or right. Lever 25a. 25b and a forward switching operation tool 24 that switches the aircraft to forward movement.
a and a backward switching operation tool 24b for switching to reverse mode, for turning the machine body in the forward state in the same direction as the reaped stem culm sending direction by the sending device A. The grip operation lever 25a is connected to both grip portions 5'a. 5/b, and the forward switching operation tool 24 is provided near the grip operation lever 25a for turning the stem culm feeding direction.
A is provided on the grip portion 5'b on the opposite side of the forward switching operation tool 24a for turning the machine in the forward state in the direction opposite to the reaping culm sending direction. A walk-behind reaping machine characterized in that a grip operation lever 25b is provided, and the reverse movement switching operation tool 24b is provided near the grip operation lever 25b.