JPS6028179Y2 - Disk mower for tractor attachment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a disc mower that can be mounted on a tractor, and the entire framework structure including the transmission system etc. can be mounted on either the front or rear of the tractor. The purpose is to eliminate the need for switching the rotation direction, etc.

There are two ways to attach a working machine to a tractor: a front-mounting method and a rear-mounting method, and one of the mounting methods is adopted depending on work conditions and other factors.

However, the waist disc mower is mounted using an offset type breech mounting method, which is mounted so as to protrude to one side at the rear of the tractor.

This is because conventional disc mowers have a flat machine frame that houses the transmission mechanism, which is placed at the bottom of the machine frame, and a cutting blade body is installed on this machine frame via a rotating disc. This is due to the structure.

In other words, in conventional disc mowers, the machine frame is located at the bottom, so with the front mounting system, which is usually a tandem type, there are problems with the connection to the three-point linkage mechanism or the position of the input shaft, which causes structural problems. there were.

Furthermore, since the rotating direction of the rotating disk is opposite between the front-loading type and the rear-loading type, it was necessary to separately provide a switching mechanism for conventional disk mowers.

The present invention solves these conventional problems, and its characteristics are that the machine frame is provided with multiple sets of rotating disks that rotate around a vertical axis in the horizontal direction, and that each rotating disk has a In a tractor-mounted disc mower equipped with a cutting blade body, a machine frame equipped with a transmission mechanism for driving each rotating disc is arranged above the rotating disc, and an input shaft and a machine frame for transmitting tractor power to the transmission mechanism are arranged above the rotating disc. The input shafts are provided at one lateral end and the center of the frame in opposite directions, and one of the two input shafts is interlocked with the transmission mechanism via the other, and corresponds to the input shaft in the center of the machine frame. The main feature is that a front-wear connecting portion is provided, and a rear-wear connecting portion is provided that is movable up and down around the input shaft at the end.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
1 to 5 show the state when the front is mounted, 1 is a tractor, 2 is a front mounted three-point link mechanism for mounting a disc mower 3 on the front of the tractor 1; A disc mower 3 attached via a three-point linkage mechanism 2 can be raised and lowered by a hydraulic cylinder 4.

The disc mower 3 includes a box-shaped machine frame 6 that houses a transmission mechanism 5, and a machine frame 6 that projects downward from the machine frame 6 through a bearing case 7.
The vertical shaft 8 of the book, the rotating disk 9 attached to the lower end of each vertical shaft 8, the cutting blade body 10 pivotally attached to the rotating disk 9, the safety cover 11, the central input shaft 12, the end input shaft 13, etc. Be prepared.

The machine frame 6 is provided with a front mounting connection part 14 such as a top mast and a lower link bracket that are detachably connected to the front three-point linkage mechanism 2 at the center thereof.

The transmission mechanism 5 has a horizontal transmission shaft 15 mounted in the machine frame 6, and the transmission shaft 15 has a bevel gear 16 on each vertical shaft 8.
A bevel gear 17 is provided which meshes with the end input shaft 13 and is operatively connected to the end input shaft 13 at one lateral end via a bevel gear 18,19.

The vertical shaft 8 is rotatably supported by a bearing case 7 mounted on the lower surface of the machine frame 6, and a rotary case 20 is provided at the lower end of the vertical shaft 7 so as to be rotatable therewith.

The rotating case 20 has a rotating disk 9 and is fitted onto the bearing case 7 via a bearing 21 at its upper end.

In addition to having the cutting blade body 10, the rotating disk 9 is provided with a rotating drum 22 concentrically, and a plurality of exclusion rods 23 are provided in the circumferential direction on the outer periphery of the rotating drum 22 for removing cut grass, etc. It is being

A grounding cover 24 is arranged below the rotating disk 9,
This grounding cover 24 is supported by being fitted onto the rotating case 20 via a holding cylinder 25 and a bearing 26 .

The end input shaft 13 is rotatably supported via a bearing 28 by a bearing case 27 mounted from the front side at one lateral end of the machine frame 6, and protrudes forward from the machine frame 6.

A pulley 29 is detachably attached to this end input shaft 13.

The central input shaft 12 is supported at the center of the machine frame 6 via a bearing 30 and a bearing case 31, and is made to protrude rearward. It is interlocked and connected to the take-out device 33.

The bearing case 31 is removably pivoted to a mounting bracket 34 of the machine frame 6 via a mounting pin 35, and is biased in one direction by a tension device 36.

A pulley 37 is provided on the central input shaft 12 , and the pulley 37 is operatively connected to the pulley 29 via a belt 38 .

The safety cover 11 is attached to the mounting bases 39 at the front and rear of the machine frame 6 with bolts 40 so as to cover the upper part of the rotating disk 9, and the safety cover 11 is provided with inclined parts 38 at the four corners of the front, rear, left and right. There is.

The bolt 40 is also used for attaching a mast 41, which will be described later.

Note that a rubber sag 42 is provided on the periphery of the safety cover 11.

43 is a belt cover.

A support shaft 44 is mounted on the input shaft 13 side of the end of the machine frame 6 so as to be front and rear opposite to the bearing case 27 on the same axis. It is rotatably fitted around the end input shaft 13.

The connection bracket 45 is for rear mounting and is detachable from a mounting frame described later.

As shown in FIG. 6, the front power extraction device 33 is configured to be capable of switching between forward and reverse directions and capable of two-stage shifting between high and low speeds.

That is, the front power take-off device 33 has two shift gears 47.
．． 48, and when the shift gear 47 is operated in the direction of the arrow a, the input shaft 49 and the transmission shaft 50 are directly connected, and the front PTO
When the shaft 51 rotates normally and is operated in the direction of arrow b, the shift gear 47, gear 52, transmission shaft 53, gears 54, 55, etc.
Power is transmitted to the transmission shaft 50 via the front PTO
The shaft 51 is reversed.

Moreover, if the shift gear 48 is operated in the direction indicated by the arrow a, it engages with the gear 57 and becomes low speed, and if it is operated in the direction indicated by the arrow b, it engages with the gear 58 and becomes high speed.

7 to 10 show the disc mower 3 in a rear-mounted state.

59 is a rear three-point link mechanism, and a mounting frame 60 is attached to the rear of the tractor 1 via this rear three-point link mechanism 59.

At one end of the mounting frame 60 in the lateral direction, the connecting brackets 45 of the machine frame 6 are located at the front and rear.

It is removably attached by a mounting pin 61 so as to be sandwiched between the two sides.

62 is a transmission shaft inserted into the mounting frame 60 opposite to the rear PTO shaft 63 of the tractor 1, and is connected to the rear PTO shaft through a universal joint shaft.
A pulley 64 is connected to the TO shaft 63 and is provided at the rear end of the transmission shaft 62, and this pulley 64 is interlockingly connected to the pulley 29 via a belt 65.

66 is a hydraulic cylinder provided on the mounting frame 60, and its piston rod 67 is connected to the middle part of the swing arm 68.

The swinging arm 68 is pivoted to the mounting frame 60 via a bracket 69 so as to be swingable left and right, and a connecting rod 70 is connected to the upper end of the swinging arm 68 .

The connecting rod 70 is connected to the mast 41 on the machine frame 6 via a long hole 71 and a mounting pin 72.

73 is a hydraulic system for lifting and lowering the working machine.

In the above configuration, when the disc mower 3 is used in a muzzle-mounted manner, the central input shaft 12 of the disc mower 3 is mounted in front of the tractor 1 via the muzzle-mounted three-point linkage mechanism 2, as shown in FIGS. 1 to 3. Transmits more power.

At this time, the tractor power is transmitted from the central input shaft 12 to the pulley 3.
7. After being transmitted to the end input shaft 13 via the belt 38 and pulley 29, it is transmitted from the transmission mechanism 5 in the machine frame 6 via the vertical shaft 8 to each rotating disk 9. rotates in the direction of arrow C.

Therefore, when cutting grass or the like, the grass is moved forward with the ground cover 24 in contact with the ground, and the cutting blade body 10 cuts the grass as the rotary disk 9 rotates.

The cut grass is collected in the center by the removal rod 23 of the rotating drum 22, and is sent to the rear as a line of collected grass.

During this work, the grounding cover 24 only touches the ground, does not rotate together with the rotary disk 9, and functions as a gauge.

When using the disc mower 3 with the rear mounting method, the seventh
As shown in FIG.
At the same time, after removing the belt 38 on the disc mower 3 side, turn the disc mower 3 in the opposite direction, and attach the connecting bracket 45 of the machine frame 6 to the mounting frame 6 using the mounting pin 61.
0, and a belt 65 is hung between the pulleys 64 and 29.

Subsequently, by connecting the connecting rod 70 to the mast 41 with the pin 72, the mounted state as shown in the figure is obtained.

In this case, the tractor power is transmitted from the transmission shaft 62 to the transmission mechanism 5 via the end input shaft 13 as shown in FIG. Rotate.

During operation, the disc mower 3 swings up and down around the end input shaft 13 within the range of the elongated hole 71 to follow the slope of the ground.

When the hydraulic cylinder 66 is contracted, the disc mower 3 rises around the end input shaft 13.

When using the rear mounting method, a corresponding notch is provided in the safety cover 11 so that the connecting bracket 45, belt 65, etc. do not interfere with the safety cover 11, and when the front mounting is used, it is covered with another cover. It is necessary to

Note that the central input shaft 12 and the like do not necessarily need to be removed when retrofitting, and the central input shaft 12 is interlocked with the transmission mechanism 5, and the end input shafts 13 are interlocked via the central input shaft 12. You can also do it.

The connecting bracket 45 may be fixed to the machine frame 6 when not needed, or the boss portion 46 may be made into a split type and may be removed.

In this invention, since the machine frame and the transmission mechanism are located above the rotating disk, it is possible to freely arrange the mechanism for attaching to the tractor and the transmission system, and it is intended to be versatile and can be used for both front and rear mounting. be able to.

In addition, two input shafts are provided in the center and at the ends in opposite directions,
In addition, because one side is linked to the transmission mechanism through the other, the rotation direction of the rotating disks for the front and rear mounts can be reversed simply by reversing the mounting position, eliminating the need for any special switching means. be.

Furthermore, a rear mounting connection part is provided at the end of the machine frame that can move up and down around the input shaft at the end, so when the front is loaded, the entire mower can follow the ground around the input shaft, making it possible to harvest on slopes. It is easy to do so, and power transmission is also easy and smooth.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view when the front is mounted, FIG. Figure 5 is a view taken along the line X-X in Figure 4, Figure 6 is the configuration of the front power take-off system, Figure 7 is a rear view when mounted to the rear, Figure 8 is a plan view of the same, Figure 9 is a sectional view of the same main part, 1st
Figure 0 shows the components of the power system when mounted on the breech. 1...Tractor, 2...Front three-point link mechanism, 3...Disc mower 5...
・Transmission mechanism, 6... Machine frame, 8... Vertical shaft, 9... Rotating disk, 10... Cutting blade body, 12... ...Central input shaft, 13... End input shaft, 14... Front mounting connection part, 45...
...Connection bracket, 60...Mounting frame.

Claims (1)

[Scope of utility model registration request] A tractor-mounted disc mower comprising a plurality of horizontally arranged rotating discs that rotate around a vertical axis on a machine frame and a cutting blade body provided on each of the rotating discs, which is equipped with a transmission mechanism for driving each rotating disc. A frame is disposed above the rotary disk, and input shafts for transmitting tractor power to the transmission mechanism are provided at one lateral end and the center of the machine frame in front and back directions opposite to each other, and among the two input shafts, One is interlocked and connected to the transmission mechanism via the other, and the machine frame is provided with a front mounting connection that corresponds to the input shaft in the center and a rear mounting connection that can move up and down around the input shaft at the end. A disc mower for mounting on a tractor characterized by