JPS5938100Y2 - reaper - Google Patents

Description

[Detailed description of the invention] The present invention is a reaper for cutting grass, etc., and in particular, a cutting blade body, which is driven for reaping by an appropriate drive mechanism, is installed at the front of the machine body in the direction of one side of the machine body. This invention relates to an improvement of a reaper that is arranged in a horizontally extending manner.

Generally, in this type of reaper, as shown in Fig. 1, a cutting blade body 2 is fixedly installed at the front of the body of the reaper 1 and extends from there to one side. , When reaping work is carried out from the solid line position to the dashed-dotted line position, and then the reaping work is carried out on the unmown land adjacent to the already mown land that has already been reaped,
The reaping machine 1 must be moved again to the two-dot chain line position near the reaping start position, and so-called reciprocating reaping cannot be performed.

In other words, in order to perform reciprocating mowing, the reaper 1 can be turned from the one-dot-dashed line position toward the direction of the uncut field and brought to the three-dot-dashed line position, but in this case, the body of the reaper 1 is not in the uncut position. This is because you will have to pass through the land and step on grass, etc.

Therefore, when using a conventional reaper, when moving from an already cut field where reaping work has been completed to an adjacent unmown field and reaping work in the unmown land, the reaper must be used for the reaping operation. There is an unreasonable need to move the machine to the starting position unnecessarily, which inevitably leads to a decrease in work efficiency, especially in a large work area.

In view of the above points, the present invention aims to provide a reaping machine that can perform good reciprocating mowing in order to improve work efficiency. The cutting blade body is configured to be rotatable and reversible on a vertical plane.

Next, an embodiment of the reaper according to the present invention will be described with reference to FIGS. The cutting blade body 2, which has a cutting width of an appropriate length and consists of a sliding blade 5 that is engaged with the sliding blade 5 and can be slid back and forth in the longitudinal direction, is held from one side of the machine with its blade surface facing forward. A mission case 9 is provided extending horizontally in the direction, has an engine 6 mounted at the rear of the aircraft body, and is provided with an input shaft 8 at the center of the aircraft body to which power is transmitted 7 from the engine 6; Pivot support 1 at the bottom end of
A power transmission mechanism (10 shown in the figure) which is driven by the input shaft 8 and a driving wheel 11 which is internally housed in the mission case 9 is installed on the front wall of the upper end of the mission case 9. A transmission case 12 in which a transmission shaft (not shown) interlockedly connected to the shaft 8 is housed is provided horizontally protruding forward, and a cutting blade body is interlocked and connected to the transmission shaft at the front end of the transmission case 12. The output shaft 1 extends vertically to a position near 2.
3 is installed vertically, and the output case 14 is installed vertically.
A support case 17 is attached to the lower end of 4 through an appropriate attachment mechanism 15 to fix 16 one end of the fixed blade 3 of the cutting blade body 2 and to cantilever support the cutting blade body 2 in the above-described state. The cutting blade body 2 is driven for cutting by the engine 6, the input shaft 8, and the output shaft 13 to which power is transmitted via the transmission shaft, via an appropriate drive mechanism 18 housed in the support case 17. In other words, the sliding blade 5 is configured to be reciprocated in the direction of the row (horizontal force direction perpendicular to the force direction of the machine body) while slidingly contacting the fixed blade 3.

Note that 19 is a steering handle that extends rearward from the body of the reaper 1.

The mounting mechanism 15 is configured as follows so that the cutting blade body 2 can be rotated and reversed on a vertical plane.

That is, at a proper location on the rear wall of the support case 11 facing the output case 14, there is a hole which is orthogonal to the mid-row direction of the cutting blades 2 and orthogonal to the axis of the output shaft 13, and one end thereof. A rotating shaft 20 is formed in a wire groove portion 20a having a smaller diameter than the other end thereof, and a flange portion 21afr is formed on the peripheral edge of the needle at one end of the rotating shaft 20. A mounting support tube 21 having a locking portion 21b formed on the inner circumferential edge of one end thereof to be relatively locked to the end surface of the other end of the rotation support tube 20 is fitted onto the outside so as to be relatively freely rotatable. , a pair of nuts 22., 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 32, 22, 22, 32, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, , 2, 2, should be attached, in order to hold the locking part 21b of the mounting support cylinder 21 so as not to be able to move in the axial direction relative to the rotation support cylinder 20. Screw on 22,
The wire groove portion 20a of the rotary support tube 20 is inserted into the lower end of the output case 14 through an opening formed therein, and the mounting support tube 21 is fixed via the flange portion 21a thereof, The support case 17 and the cutting blade body 2 are therefore rotatably displaceable around the axis of the rotary support tube 20 on a vertical plane along the mid-row direction.

Further, in the cutting blade body 2, in a normal state, the locking pin 17a provided protruding from the rear wall of the support case 11 and the locking pin m21c provided protruding from the end of the mounting support tube 21 are locked to each other, and the reaper 1 The cutting blade body 2 is kept under pressure by its own weight in its normal position (solid line position in Figure 3, position in Figure 4) where it extends horizontally from the body of the machine in one side force direction. When the reaping machine 1 is artificially rotated and brought to an inverted position (position shown by the chain line in FIG. 3, position shown in FIG. A reversal locking pin 17b protruding from the rear wall portion of the support case 17 facing the locking pin 17a is locked to the locking portion 21c, and is held in the reversed position under pressure by its own weight. ing.

Incidentally, reference numeral 24 designates a support body from which the mission case 9 also protrudes in order to fixedly support the lower end portion of the output case 14.

Next, the drive mechanism 18 for driving the cutting blade body 2 for cutting
To explain, this drive mechanism 18 supports a transmission shaft 25 by a bearing with its axis coincident with the rotation support cylinder 20, and connects the transmission shaft 25 to the output shaft 13 in the output case 14 by a bevel gear 26. Interlockingly connected via 27,
A drive shaft 30 interlockingly connected to the transmission shaft 25 via bevel gears 28 and 29 is vertically supported by bearings in the support case 17, and an axis is offset by an appropriate amount from the axis of the drive shaft 30 at the end of the drive shaft 30. At the same time, a driving body 32 having a long hole 32a formed in the sliding blade 5 of the cutting blade body 2 in a direction perpendicular to the mid-row direction is fixed, and the driving body 32 is fixed to the sliding blade 5 of the cutting blade body 2. The drive pin 31 is engaged with the drive shaft 30, and the drive shaft 30 is rotationally driven by the output shaft 13 via the transmission shaft 25. Therefore, the engagement between the drive pin 31 and the elongated hole 32a of the drive body 32 causes the sliding blade to rotate. 5 is configured to be reciprocated in the direction of the row.

Since the rotational axis of the cutting blade body 2 and the axis of the transmission shaft 25 are aligned, the cutting blade body 2 is always driven by the output shaft 13 regardless of the rotational displacement of the cutting blade body 2 as described above. It can be driven for reaping via the drive mechanism 18.

Since the reaping machine 1 according to the present invention is constructed as described above, its operation will be explained next with reference to the above embodiment.
1 and the engaging portion 21c, the normal position (third
When the reaper 1 is held at the solid line position in the figure and the position shown in FIG.
As usual, the mower body 2 is used to cut down grasses and the like that have been planted in the working area where the mower body 2 passes.

However, according to the reaping machine 1 according to the present invention, the reaping work on the work area where the straw grass etc. have been cut as described above, that is, the uncut area adjacent to the already cut area, can be carried out as follows. It can be done efficiently.

That is, when the reaper 1 is moved to the dashed-dotted line position in FIG. By artificially rotating and displacing the cutting blade body 2, the locking portion 21c and the support case 1 are moved to the inverted position (the chain line position in FIG. 3, the position shown in FIG. 5).
It is held by relative locking with the reversal locking pin 17b of No.1.

When the cutting blade body 2 is driven again in this state and the reaper 1 is moved in the direction of the uncut land (double-dashed line in FIG. 6), the reaper is 1, the running wheels 11 are located on the side of the cut field, so even if the machine moves forward on the uncut field and performs the reaping work, the running wheels 11 will not trample on the grass, etc. to be planted in the uncut field. There is no risk of being defeated.

Therefore, according to the reaping machine 1 according to the present invention, each time the reaping work is performed linearly from one end of the work area to the other end, the reaping machine
By artificially reversing the mower from the normal position to the friend position or from the reversal position to the normal position, so-called reciprocating mowing can be effectively performed without the wheels 11 of the reaper 1 stepping on grass, etc. As a result, work efficiency improves.

Particularly when the work area is vast, the ability to mow back and forth will significantly improve work efficiency.

In addition, since the cutting blade body 2 is extended horizontally from the body of the reaper 1 in a state close to the work ground, it has a large force of 111 J, so the reaper 1
When the cutting blade body 2 tilts toward the direction of the cutting blade body 2, there is a risk that the tip of the cutting blade body 2 will collide strongly with the ground and the cutting blade body 2 will bend. The locking portion 717a due to its own weight is connected to the reverse locking pin 17b and the locking portion 21.
In the above case, since it is only held in the normal position or the reversed position by the locking action with c.
The cutting blade body 2 is rotated relatively upward against its own weight, and the cutting blade body 2 does not strongly collide with the ground.

In the above embodiment, the cutting blade body 2 is rotatably displaceable on a vertical plane along the mid-row direction, and with its blade surface facing forward, it can be placed in the normal position shown by the solid line in FIG. 3 or in the chain line shown in FIG. Although an example has been shown in which the reaping machine 1 is configured to be inverted and held in any of the inverted positions, thereby enabling reciprocating mowing using a so-called push-cutting method, in other embodiments, It is also possible to configure the cutting blade body 2 so that the blade surface of the cutting blade body 2 faces rearward so as to be able to perform reciprocating mowing using a so-called pruning method.
Of course, it is also possible to configure the reaper 1 so that it is held in a vertical position that does not extend from the body of the reaper 1 due to side force.In particular, if the latter configuration is used, it is possible to maintain the reaper 1 in a vertical position that does not extend from the body of the reaper 1. When not working, the cutting blade body 2 does not get in the way and is convenient.

In yet another embodiment, as shown in FIGS. 1 to 9, a support case 17 that supports the cutting blade body 2 is attached to the lower end of the output case 14 via a mounting means 15 similar to the embodiment described above.
It is attached to the side wall so as to be rotatable on a vertical plane perpendicular to the mid-row direction, and the cutting blade body 2 is protruded from the mounting support 21 in the normal position shown by the solid line in FIG. 7 or in the inverted position shown by the chain line. The fixing bolt 33 to be screwed onto the fixing part 21d is supported by the case 1T.
It may be configured to be fixed by screwing into either the fixing wire hole 17c or the inverted fixing wire hole 17d formed in the.

Note that the drive mechanism 18 of the cutting blade body 2 is also the same as in the previous embodiment.

With this configuration, as shown in FIG. 9, reciprocating mowing by the reaper 1 is possible by alternately performing the push mowing method (solid line) and the pull mowing method (chain line).

In any case, as is clear from the above explanation, the reaper of the present invention rotates and inverts the cutting blade body, which extends horizontally from the machine body in one direction of force, on a vertical plane. By reversing the cutting blade body as appropriate, it is possible to perform mowing work without always positioning the body of the reaper in the field that has already been cut. It is something that grows in the mountains.

According to the present invention, unlike the conventional method described at the beginning, the larger the work area, the more efficiently the reaping work can be performed.

Further, the sliding blade 5 and fixed blade 3 of the cutting blade body 2 are connected to the cutting blade body 20.
By reversing the vertical position with the reversal, the fixed blade 3
is not always located on the lower side like the receiving blade in conventional devices, but is also located on the upper side, and the sliding blade 5 is located on the lower side and also serves as a receiving blade, so that the life of the fixed blade 3 can be extended. Therefore, the thickness of the fixed blade 3 can be made thinner than that of the conventional device.

[Brief explanation of the drawing]

Fig. 1 is a work explanatory diagram showing the state of reaping work by a conventional reaper, and Figs. 2 to 6 show an embodiment of the reaper according to the present invention. A side view, Figure 3 is a plan view of the same, Figures 4 and 5 are vertical side views of the same main parts (the cross section is along the line IV-rV in Figure 3), and Figure 6 shows the reaping operation state. It is an action explanatory diagram,
Figures 7 to 9 show other embodiments of the reaper according to the present invention. Figure 7 is a plan view of the reaper, and Figure 8 is a longitudinal sectional front view of the main parts (the cross section is shown in Figure 7). 9 is an explanatory diagram showing the operation of the reaping operation. 1... Reaper, 2... Cutting blade body, 15.
...Mounting mechanism 18...Drive mechanism.

Claims (1)

[Scope of utility model registration request] In a reaper in which a cutting blade body 2, which is driven for cutting by an appropriate drive mechanism, is disposed at the front of the machine body so as to extend horizontally toward one side of the machine body, the cutting body 2 is mounted on a vertical plane. It is configured to be able to be rotated and reversed, and the sliding blade 5 and fixed blade 3 of the cutting blade body 2 are moved up and down as the cutting blade body 2 is reversed, and the fixed blade 3 is changed to the upper side or the lower side. A reaping machine characterized by: