JPH0233644Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tractor-mounted reaping device in which a reaping machine such as a maize harvester or a forage harvester can be attached to the side and rear of a tractor.

[Conventional technology]

This type of prior art is disclosed in Japanese Utility Model Publication No. 57-53133 as shown in FIG. In this prior art, a mounting frame 3 is attached to the rear of a tractor 1 via a holding rod 51, and a reaping machine 4 such as a maize harvester is attached to the mounting frame 3 so that the mounting position can be changed from the side to the rear. There is.

That is, in this prior art, the reaper 4 is used during reaping work.
is attached to the side of the mounting frame 3 to set the tractor to the lateral accompanying position A (shown by the solid line in Figure 4), and when driving on the road, connect the reaper 4 to the rear of the mounting frame 3 to set the tractor to the rear towing position C. There is.

[Problem that the invention attempts to solve]

In such a conventional technique, the mowing operation can only be carried out in the side following posture A, so it is difficult to mow the headland.

To harvest this headland, the reaper 4 can be mounted rearward via a three-point linkage mechanism, but two types of reapers should be prepared: one for side-following position and one for backward-facing position. is even more difficult. Therefore, it is conceivable to make it possible to attach one reaper in two different postures. That is, the side part of the reaper 4 is pivotally supported on the side part of the mounting frame 3 so as to be rotatable around the vertical axis.
The purpose is to enable the vehicle to be reversed backward from the lateral accompanying posture A.

However, if one reaping machine is to be able to change its position between two positions, the structure of the power transmission system becomes a problem. In other words, when the reaper is placed in the rear facing position, the reaper is located immediately behind the tractor PTO shaft, and its power transmission only needs to be directly connected in the longitudinal direction. The power transmission system that extends laterally through the mounting frame is unnecessary and becomes an obstacle, resulting in a situation where it has to be removed and carried.

[Means to solve the problem]

In order to solve these various problems, the present invention connects the reaping machine 4 to one side of the mounting frame 3 in a pivotal manner so that it can be rotated backwards, and also connects the transmission case 13 and the transmission part 30 of the reaping machine 4. , providing shafts 17 and 33 that face each other when the reaper 4 is in the side following attitude A, and shafts 16 and 35 that face each other when the reaper 4 is in the backward attitude B,
It is configured so that power can be easily transmitted in each position.

That is, the specific configuration of the problem solving means of the present invention is as follows:
A mounting frame 3 is attached to the tractor 1 via a three-point linkage mechanism 2, a transmission case 13 to which power is transmitted from the PTO shaft 21 is provided on the mounting frame 3, and a reaper 4 is mounted on one side of the mounting frame 3. One side is pivotally connected via a vertical pivot shaft 40, and the mounting position of the reaper 4 can be changed with respect to the mounting frame 3 between a side-following position A and a rearward-facing position B reversed backwards. , a tractor-mounted reaping device including a transmission part 30 to which power is transmitted from a transmission case 13 to the reaper 4 in each posture A and B, the transmission case 13 and the transmission part 30 are connected to each other when the reaper is in the side position. When the reaper is in the trailing attitude A, the horizontal shafts 17 and 33 that are substantially concentrically opposed to each other are protruded, and when the reaper is in the backward-facing attitude B, the longitudinally protruding shafts 16 and 32 are substantially concentrically opposed to each other. It stands out.

[Effect]

By attaching the reaper 4 to the side of the mounting frame 3, the reaper 4 assumes the tractor side following attitude A.
The power from the PTO shaft 21 is transmitted to the transmission part 30 via the transmission case 13, and when the reaper 4 is rotated around the vertical pivot shaft 40, it is reversed to the rear of the mounting frame 3 and assumes the rearward orientation B. The transmission case 13 and the transmission part 30 face each other, and the protruding shafts 16 and 32 protruding from both face each other, and by connecting these, the power from the PTO shaft 21 is transferred to the transmission case 13.
It is transmitted to the transmission section 30 using. In the lateral accompanying attitude A, the horizontal shaft 17 of the transmission case 13 and the horizontal axis 33 of the transmission part 30 are substantially concentrically opposed to each other, and in the backward facing attitude B, the protruding shafts 16 and 32 are substantially concentrically opposed to each other. They face each other, and power is transmitted with extremely little power loss.

〔Example〕

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

In Figs. 1 to 3, reference numeral 1 denotes a forward and backward moving type tractor with its rear half shown, and a reaping device 5 equipped with a mounting frame 3 and a reaping machine 4 via a three-point linkage mechanism 2.
is attached.

The tractor 1 has a handlebar 6 and a seat 7 in a forward facing position (phantom line in Figure 1) and a rearward facing position (solid line in Figure 1).
The mounting position can be changed freely, and other parts necessary for operation are also configured so that they can be moved forward and backward.

The mounting frame 3 has a lower link 8 on the front of the frame body.
A bracket 10 having a pin 9 for connection with
and a top link attachment part 12 for connecting with the top link 11, and a transmission case 13 in the center.
is provided.

This transmission case 13 has shafts protruding in three directions, the shaft 14 protrudes forward and serves as an input shaft connected to a PTO shaft 21 via a universal joint 15, and the shaft 16 is connected to the input shaft 14. The shaft 17 is a horizontal shaft perpendicular to the shafts 14 and 16, and the shafts 14 and 16 have a bevel gear 19 that meshes with a bevel gear 18 provided on the horizontal shaft 17. , 20 are provided, and the rotation of the input shaft 14 is also transmitted to the shafts 16 and 17.

Although a forage harvester can also be applied to the reaper 4, a maize harvester is exemplified here, in which a reaping section 24 is formed in the front part of the shredding blower section 23, and a divider 25 is attached in front of the reaping section 24. , there is a chute 26 at the upper part of one side of the shredding blower part 23.
is provided.

27 is the casing 2 forming the shredded blowing part 23
A rotary cutter placed inside the shaft 3 in the front and back direction.
2, and this shaft 32 is rotatably driven in the clockwise direction in FIG. , a bevel gear 35 is provided within the transmission section 30. Also in this transmission part 30, a bevel gear 34 provided on the horizontal shaft 33 and a bevel gear 35 provided on the protruding shaft 32 mesh with each other, so that power can be transmitted from the horizontal shaft 33 to the protruding shaft 32.

The casing 28 of the reaper 4 is adjacent to one side of the mounting frame 3, and a pair of upper and lower brackets 38, 39 are respectively protruded from the rear of the adjacent sides of the casing 28, and both the brackets 38, 39 are attached to a vertical axis-shaped pivot. They are connected by a support shaft 40, so that the reaper 4 can be turned around the pivot shaft 40 to the rear of the mounting frame 3.

Reference numeral 41 denotes a fixing bracket that projects forward from the side of the reaper of the mounting frame 3, contacts the side surface of the casing 28, and is detachably fixed by a bolt 42. By means of the bolt 42 and the pivot shaft 40, the reaper 4 is mounted facing forward on one side of the mounting frame 3, and is in a side-following position in which it can perform ridge reaping work while moving parallel to the side of the tractor 1. It becomes A. At this time, the tractor 1 is operated in a forward facing position, and the seat 17 of the transmission case 13 and the transmission part 30
The transverse shafts 33 of the two are coaxially opposed to each other (as shown in FIGS. 1 and 2), and are interlocked and connected by a universal joint 43.

Reference numeral 45 designates at least one connecting rod, one end of which is pivotably or removably attached to the side of the mounting frame 3 where the bracket 39 is not provided, and the other end of which can be flipped backwards or connected to the casing 28 of the reaper 4. It is detachably connected to the side of the By means of the connecting rod 45 and the pivot shaft 40, the reaper 4 is held in a backward posture B with respect to the mounting frame 3, and the headland reaping work is performed. At this time, it is preferable that the tractor 1 is operated in a backward motion with the handle 6, seat 7, etc. facing backward.

When the reaper 4 is reversed backward, its transmission part 30 faces the transmission case 13, and the protruding shafts 16 and 32 face each other concentrically. A connecting cylinder 46 is spline-fitted to one of the protruding shafts 16, and by sliding in the axial direction, it fits onto the other protruding shaft 32, so that the two protruding shafts 16, 32 are interlocked. It is configured.

47 is a lock pin inserted through the connecting tube 46;
By engaging with the circumferential groove 16a formed in the protruding shaft 16, the position of the connecting cylinder 46 is regulated, and it can be removed from the circumferential groove 16a by moving in the axial direction. Incidentally, when the connecting cylinder 46 is not connected to the protruding shaft 32, it is moved to the position shown by the imaginary line in FIG. 3, and is held in the retracted state by engaging the locking pin 47 with the circumferential groove 16b.

49 is a gauge wheel provided on the casing 28 so as to be vertically adjustable.

The connecting rod 45 has one end pivoted to the mounting frame 3 (or the casing), and the other end is formed into a hook shape as shown by the imaginary line in FIG. It may be configured to be locked to a pin 48 provided in the.

[Effect of idea]

According to the present invention described in detail above, one side of the reaping machine 4 is pivotally connected to the mounting frame 3 so that it can be mounted inverted from the side following posture A to the backward facing posture B. In addition to accompanying mowing work on the side of the tractor, the machine 4 can also perform headland mowing work facing backwards, and changing its position is easy because it rotates in reverse. Since the protruding shafts 16 and 32, which are interlocked and connected when the reaper 4 is in the backward posture B, are protruded,
Mount the reaper 4 on the rear of the frame 3 in a backward facing position B
Even if the transmission case 13 is installed in a vehicle, the transmission case 13 does not become an obstacle to power transmission, and can be used in the opposite direction. Moreover, when the reaper 4 is in the side following attitude A, the horizontal shaft 17 of the transmission case 13 and the horizontal axis 33 of the transmission part 30 are substantially concentrically opposed to each other, and when the reaper 4 is in the backward facing attitude B Since the protruding shaft 16 of the transmission case 13 and the protruding shaft 32 of the transmission part 30 are opposed to each other in a substantially concentric manner, the mutual interlocking connection of the shafts is extremely simple and easy, and an intermediate transmission device is not required, reducing power loss. There are also very few
Transmission efficiency can also be increased.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a plan view, Figure 2 being a rear view in the lateral accompanying posture, and Figure 3 being a part showing the connecting structure of the protruding shaft. The cross-sectional side view and FIG. 4 are plan views showing the prior art. DESCRIPTION OF SYMBOLS 1... Tractor, 2... Three-point link, 3... Mounting frame, 4... Reaping machine, 5... Reaping device, 1
3...Transmission case, 16...Rearward protruding shaft, 21...
...PTO shaft, 30...Transmission part, 32...Protruding shaft,
40... Pivot shaft, 45... Connecting rod, 46... Connecting tube, A... Lateral accompanying posture, B... Backwards posture.

Claims (1)

[Claims for Utility Model Registration] A mounting frame 3 is attached to the tractor 1 via a three-point linkage mechanism 2, and a PTO is attached to the mounting frame 3.
A transmission case 13 to which power is transmitted from the shaft 21 is provided, and one side of the reaper 4 is pivotally connected to one side of the mounting frame 3 via a vertical pivot shaft 40. The mounting position can be changed between a lateral accompanying position A and a rearward-facing position B reversed to the mounting frame 3. In the tractor-mounted reaping device, horizontal shafts 17 and 33 are protruded from the transmission case 13 and the transmission part 30, and which are substantially concentrically opposed to each other when the reaper is in the lateral following posture A. . A tractor-mounted reaping device characterized in that when the reaper is in a rearward facing position B, protruding shafts 16 and 32 in the front and rear directions that face each other substantially concentrically are protruded.