JPS645444Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotary working machine, and more specifically, the rotary working part of a rotary working machine that is connected to a traveling working vehicle so as to be able to rise and fall freely is fixed in the mounting direction on the traveling working vehicle. This invention relates to an improvement of a rotary work machine that can switch between forward and reverse rotation by changing the rotation forward and backward.

2. Description of the Related Art A rotary working machine, for example, a rotary tiller, has been proposed in which the rotary tiller can be driven in the forward direction for so-called down cutting or reversely driven for so-called up cutting.

For example, in paddy fields, it is possible to switch forward rotation, weeding, soil crushing, and ridge breaking work to reverse rotation, and by simply switching the rear cover of the cover mechanism back and forth and reversing the direction in which it is set on the traveling work vehicle, forward rotation and reverse rotation can be performed. Since it is possible to switch between reverse rotations and the direction of rotation of the rotary tiller does not change, it has the advantage of eliminating the need to replace the tiller claws.

However, in the case of conventional rotary work machines that can be used for both forward and reverse rotation, as mentioned above, it is necessary to change the rear cover of the cover mechanism back and forth with respect to the main cover. Since the bullet is biased in the ground direction by the bullet holding mechanism, swapping it back and forth requires attaching and removing the bullet holding mechanism along with the rear cover, which is extremely troublesome.

Therefore, the present invention eliminates the trouble of replacing the tiller claws by reversing the direction in which they are installed on the traveling work vehicle, and utilizes the advantages of rotary work machines that can easily be switched between forward and reverse directions according to work demands. However, the purpose is to improve the problem so that there is no need to replace the rear cover back and forth and remove the biasing mechanism for the rear cover.
Therefore, the present invention includes a machine frame for mounting on a traveling work vehicle, a drive machine frame having power receiving shafts at the front and rear, respectively, and a rotary working part capable of transmitting power from the power receiving shaft, and covering the rotary working part. In a rotary work machine configured with a cover mechanism and connected to a traveling work vehicle so as to be able to be raised and lowered, a mounting mechanism is provided that allows the mounting machine frame and the drive machine frame to be freely joined and separated, and a mounting mechanism is provided on the drive machine frame side. The main cover of the cover mechanism is installed,
It is characterized in that the rear cover and front cover of the cover mechanism are attached to the mounting machine frame side.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 4, reference numeral 1 denotes a rotary working machine exemplified by a rotary tilling device, which can be freely raised and lowered by a traveling working vehicle represented by a tractor (not shown) via a three-point linkage mechanism 2. is connected to.

The rotary work machine 1 has a machine frame 3 for mounting on a traveling work vehicle, and power receiving shafts 4 and 5 at the front and rear, respectively.
In this embodiment, the power of the power receiving shafts 4 and 5 can be transmitted to the rotary working part 6 by a side drive system, and the drive frame 7 and the cover mechanism 8 covering the rotary working part 6 are connected to each other. The main features are:

The mounting machine frame 3 has fitting portions 9 with downward openings at both left and right ends.
One end of the top link 11 of the three-point linkage mechanism 2 is erected on the main body 10 having a main body 10, and one end of the lower link 13 of the three-point linkage mechanism 2 is further attached to the front (traveling work vehicle side) on which one end of the lower link 13 of the three-point linkage mechanism 2 is removably pivoted. A pair of left and right lower link mounting brackets 14 protrude toward the front end of the tail wheel support rod 15, and the front end of the tail wheel support rod 15 is pivotally connected to the top mast 12. The tail wheels 18 provided on the rear left and right sides of the tail wheel support rod 15 can be moved up and down freely.

The drive frame 7 has power receiving shafts 4, 4 and 4 at the front and rear, respectively.
A support arm 20 having a cylindrical structure is formed to protrude outward from both side walls of a gear case 19 that incorporates a bevel gear mechanism having a bevel gear mechanism. The side frames 22 are respectively attached, bearing bodies 23 and 24 are respectively provided at corresponding parts of the lower part of the side transmission case 21 and the lower part of the side frame 22, and a large number of tilling claws 25 are provided between the bearing bodies 23 and 24. A pawl shaft 26 is rotatably supported around a horizontal axis to constitute a rotary working section 6, which is supported by a drive frame 7.

In addition, the power transmission to the claw shaft 26 is performed through the gear case 1.
The bevel gear mechanism in the side transmission case 21 and the wrapped transmission body or gear transmission body in the side transmission case 21 are transmitted to each other by a transmission shaft 48 inserted into one of the support arms 20, and power from the PTO shaft of the traveling work vehicle is transmitted to the power receiving shafts 4, 5 by a flexible transmission shaft not shown in the figure.

In addition to the illustrated side drive type, a center drive type may also be used.

The cover mechanism 8 includes at least a main cover 27 and a rear cover 28, and further includes front and rear side covers 29, 30 and a front cover 31 in this embodiment.

The main cover 27 is attached to each inner end surface of the side transmission case 21 and the side frame 22 via flange bolt connections 32, and the main cover 27 of the cover mechanism 8 is attached to the drive machine frame 7 side. installed.

In this embodiment, side covers 29 and 30 are also attached to the drive machine frame 7 side.

The rear cover 28 is attached to the mounting machine frame 3 side, and in this embodiment, a pair of left and right mounting brackets 33 having an inverted U-shaped fitting part 9 have stays 34 projecting in the front and rear directions on the outer end surfaces thereof. It is fixed by bolts 35, horizontal tubes 36, 36 are attached to both the front and rear ends of the stay 34, and the horizontal tubes 37 attached to the upper end of the rear cover 28 are attached to the rear horizontal tube 36 by pins 38, respectively. It is mounted in a refractably pivoted manner.

In this embodiment, the horizontal tube 3 at the front of the stay 34 is
9, the horizontal tube 4 attached to the rear upper end of the front cover 31
0 are respectively attached by pins 41 so as to be bendable.

Thus, the rear cover 28 and the front cover 31 are superimposed on the front and rear of the main cover 27 to cover the rotary working section 6.

In this embodiment, a rake rod 43 is attached to the rear cover 28 via a metal fitting 42.
3 are installed in large numbers at intervals in the lateral direction.

The mounting machine frame 3 and the drive machine frame 7 can be freely joined and separated via the mounting mechanism 44, and in this embodiment, the fitting portions 9 of the pair of left and right mounting fittings 33 are attached to the support arm 20.
A mounting mechanism 44 is constructed by attaching a pin 45 to the lower portion of the support arm 20 so as to be freely inserted and removed in the front-rear direction.

Furthermore, in this embodiment, the rear cover 28 is urged in the direction of ground contact by a pair of left and right elastic holding mechanisms 46 connected between it and the tail wheel support rod 15.
Each of the elastic holding mechanisms 46 has a rod 50 slidably inserted into a mounting bracket 49 fixed to the tail wheel support rod 15, the lower end of the rod 50 is pivotally connected to the rear cover 28, and a rod 50 is mounted on the rod 50. coil spring 5
The elastic force of the coil spring 52 can be adjusted by changing the position of the spring receiver 53.

Additionally, in the first embodiment, 47 is a pair of left and right support links that connect the top mast 12 and the lower link mounting bracket 14.

FIG. 5 shows a second embodiment, in which the rake rod 43 is attached to the stay 34, and the rear cover 28 is attached to the rake rod 4.
The third embodiment shown in FIG. 6 shows a rear cover 28 that does not have a rake rod (although it does have a front cover, it is not shown in the figure). This is an embodiment in which a pair of left and right stays 34 are provided with mounting fittings 49, and an elastic support mechanism 46 is attached between the stays 34 and the rear cover 28.

Note that the other configurations of the second and third embodiments are the same as those of the first embodiment, and common parts are indicated by common symbols.

Next, the effect will be explained.

1 and 4 show the state in which the rotary working unit 6 is driven in normal rotation to perform so-called down cutting, and the tilled soil is cut with coarse soil in the lower layer by the rake rod 43.
Sieve thin soil into layers on the upper layer, rear cover 2
Equalized by 8.

In order to drive the rotary working part 6 in the reverse direction and switch to the so-called up cut, the pin 45 of the mounting mechanism 44 is pulled out, the support arm 20 and the mounting bracket 33 are fixed, and then the rotary working part 6 is driven out of the drawing as shown in FIG. The three-point linkage mechanism 2 is activated by the hydraulic system installed on the work vehicle.
When lifted, the drive machine frame 7 and the mounting machine frame 3 are separated.

At this time, the front cover 31 and the rear cover 28
will be lifted together with the mounting machine frame 3,
Therefore, the mounting machine frame 3 is turned back and forth with respect to the drive machine frame 7 that is placed, the mounting machine frame 3 is lowered, the fitting part 9 of the mounting mechanism 44 is fitted, and the pin 4 is lowered.
By setting the frame 5 again, both the machine frames 3 and 7 can be joined and fixed.

That is, by reversing the setting direction with respect to the traveling work vehicle, it is possible to naturally make the tiller 25 more upright without replacing the tiller claws 25 or changing the direction of rotation thereof.
There is no need to remove the rear cover 28 and the bullet holding mechanism 46.

The present invention includes a machine frame 3 for mounting on a traveling work vehicle, and a drive machine frame 7 having power receiving shafts 4 and 5 at the front and rear, respectively, and a rotary working part 6 capable of transmitting power from the power receiving shafts 4 and 5. and a cover mechanism 8 that covers the rotary working part 6, and is connected to a traveling work vehicle so as to be able to rise and fall freely,
A mounting mechanism 44 is provided that allows the mounting machine frame 3 and the drive machine frame 7 to be joined and separated, and the main cover 27 of the cover mechanism 8 is attached to the drive machine frame 7 side, and the mounting machine frame 3 is attached to the drive machine frame 7 side.
Since the rear cover 28 and the front cover 31 of the cover mechanism 8 are attached to the sides, there are the following advantages.

Simply reverse the setting direction of the traveling work vehicle.
The rotary working part 6 can be switched between forward and reverse rotation.
Work performance can be greatly improved by using one rotary work machine 1.

Furthermore, when switching between forward and reverse rotation, there is no need to change the rear cover back and forth as in the conventional case, which is quick and easy.

That is, since the main cover 27 is attached to the drive machine frame 7 and the rear cover 28 is attached to the mounting machine frame 3, it is necessary to remove and attach the rear cover 28 each time when switching between forward and reverse rotation. It has the advantage of having no sex at all.

Furthermore, not only the rear cover 28 but also the front cover 3
1 is also installed on the mounting machine frame 3 side, so it rotates in the normal direction. Even if the rotary work machine is a reverse rotation type rotary work machine, the front and rear covers of the main cover 27 provided on the drive machine frame 7 side can be covered in both forward and reverse directions without having to remove or attach the front and rear covers 31 and 28 one by one. can do.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and include FIGS. 1 to 4.
The drawings show the first embodiment, and Fig. 1 is an overall side view, Fig. 2 is a plan view, Fig. 3 is a partially omitted rear view, Fig. 4 is a sectional view taken along the arrow A-A in Fig. 3, and Fig. 5 FIG. 6 is a sectional side view of the main part of the second embodiment, FIG. 6 is a sectional side view of the main part of the third embodiment, and FIG. 7 is an overall side view of the operating state showing how to switch between forward and reverse directions. 1...Rotary working machine, 3...Mounting machine frame, 4,
5...Power receiving shaft, 6...Rotary working part, 7...
...Driver frame, 8...Cover mechanism, 27...Main cover, 28...Rear cover, 44...Mounting mechanism, 4
6...Bullet retention mechanism.

Claims (1)

[Scope of utility model registration request] A machine frame 3 for mounting on a traveling work vehicle, a drive machine frame 7 having power receiving shafts 4 and 5 at the front and rear, respectively, and a rotary working part 6 capable of transmitting power from the power receiving shafts 4 and 5, and a rotary Cover mechanism 8 that covers the working part 6
In the rotary working machine 1, which is connected to a traveling work vehicle so as to be able to rise and fall freely, a mounting mechanism 44 is provided that allows the mounting machine frame 3 and the drive machine frame 7 to be joined and separated. A rotary work machine characterized in that a main cover 27 of a cover mechanism 8 is attached to the mounting machine frame 3 side, and a rear cover 28 and a front cover 31 of the cover mechanism 8 are attached to the mounting machine frame 3 side.