JPS606161Y2 - Power take-off device in rotary equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a power take-off device in a rotary device.
The purpose is to extract power from near the gear case at the top of the rotary machine frame and contribute to the multiplication of rotary work and other work at the same time.

When a rotary device is attached to a tractor and rotary work is performed, subsequent work such as pest control work, fertilization work, seeding work, etc., is often performed at the same time as the rotary work, which is the so-called complex work. There is a tendency.

However, the power that drives working machines such as pest control machines, fertilizers, and seeding machines is generally extracted from the tractor side, completely separate from the rotary device, and this is a major bottleneck in attempting to complicate work. It had become.

In other words, since the tractor's PTO system is connected to the rotary device, unless the tractor is equipped with multiple PTO systems, high-speed drive type work equipment (e.g., pest control machine, vacuum adsorption seeding machine, etc.) cannot be used in combination. Therefore, tractors equipped with only a rear PTO shaft use a method of extracting power from the rear wheels, etc., but the work equipment that can be used in this case is limited to low-speed drive types, promoting the multiplication of work. The big problem was where to get the power from.

The present invention is designed to solve these conventional problems, and its feature is that a gear case 6 having an input shaft 19 protruding forward is provided at the upper part of the rotary machine frame 3. A transmission shaft 34 interlocking with the input shaft 19 is provided laterally within the gear case 6, and power is transmitted from the transmission shaft 34 to the pawl shaft 10 via a transmission mechanism on the side of the rotary machine frame 3. In this rotary device, a transmission shaft 20 is provided in the gear case 6 in parallel with the input shaft 19, and the input shaft 19 and the transmission shaft 20 are connected to a gear 25.
26, and the transmission shaft 20 and the transmission shaft 3
4, and the input shaft 1 is connected near the front of the gear 25.
9 is provided in the gear case 6, a power take-off gear 44 is provided between the bearing 22 and the gear 25, and a power take-out opening 45 is provided in the gear case 6 corresponding to the power take-off gear 44. The gear case 6 is provided with a power take-off case 36 having a power take-off shaft 37 that interlocks with the power take-off gear 44 through the opening 45.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
The figure illustrates a case where a rotary device 1 is equipped with a pest control device 2.

The rotary device 1 includes a rotary machine frame 3, a rotary tiller 4, a rotary cover 5, and the like.

The rotary machine frame 3 includes a gear case 6 located at the upper center, a pair of left and right support arms 7 attached to both sides of the gear case 6, a transmission case 8 and a transmission case 8 provided downward from the outside of each support arm 7. The rotary machine frame 3 has a side frame 9 and the like, and is mounted to the rear of the tractor so as to be able to move up and down via a three-point linkage mechanism or the like.

The rotary tiller 4 includes a pawl shaft 10 supported between the transmission case 8 and the lower end of the side frame 9, and a large number of tilling pawls 11 implanted in the pawl shaft 10.

The pest control machine 2 includes a chemical tank 13 mounted on the support arm 7 via a mounting plate 12, a chemical tank 13 mounted via the mounting plate 12, and a liquid feed pump 14 mounted on the mounting plate 12.
, a spray pipe 15 and the like are installed horizontally at the rear upper position of the rotary cover 5, and the spray pipe 15 is supported by the rotary machine frame 3 via a mounting frame 16.

The liquid feed pump 14 is driven by a power extraction device 17 attached to the gear case 6 via a winding transmission mechanism 18, as will be described later.

In the gear case 6, as shown in FIG. 2, an input shaft 19 and a transmission shaft 20 in the front-rear direction are arranged side by side on the left and right sides.

The input shaft 19 is rotatably mounted on the gear case 6 via bearings 21 and 22, and is projected forward from the gear case 6. A universal joint shaft that transmits power is detachably connected.

The transmission shaft 20 is rotatably mounted on the gear case 6 via bearings 23 and 24.

The input shaft 19 and the transmission shaft 20 are interlocked with each other via gears 25 and 26 on the rear side of bearings 22 and 24.

That is, the input shaft 19 and the transmission shaft 20 have spline portions 27 and 28 at the projecting ends that project rearward from the bearings 22 and 24, and each of the spline portions 27 and 28 has a rear opening formed in the gear case 6. Each gear 25, 26 is removably spline-fitted from the part 29 side, and each gear 25, 26 is
．． 26 is always in occlusion.

Note that the rear opening 29 of the gear case 6 is connected to the rear cover "3".
0, and a replacement gear 31.32 having a different tooth ratio than the gear 25.26 is installed in the rear cover 30 by an appropriate fixing means.
By changing the roughness of the input shaft 19 and the exchange gears 31 and 32, the reduction ratio between the input shaft 19 and the transmission shaft 20 can be changed.

A bevel gear 33 is rotatably fitted to the front end of the transmission shaft 20, and this bevel gear 33 meshes with a bevel gear 35 at the inner end of the transmission shaft 34, which is rotatably fitted into the support arm 7 on one side. .

The transmission shaft 34 is connected to the pawl shaft 1 via a transmission mechanism inside the transmission case 8.
It is linked to 0.

As shown in FIGS. 2 and 3, the gear case 6 has a transmission shaft 20 located behind the support arm 7 and relative to the input shaft 19.
A power take-off device 17 is attached to the opposite side wall.

The power take-off device 17 includes a power take-off shaft 37 parallel to the input shaft 19 at the outer end of a power take-off case 36 that projects laterally from the gear case 6 .

The power take-off case 36 is connected to the bolt 38 behind the support arm 7.
The power take-off shaft 37 is rotatably supported on the power take-off case 36 by bearings 40 and 41 with the spline portion 39 protruding rearward. Gear 4 inside
2.43 to the power take-off gear 44 on the input shaft 19.

The power take-off gear 44 is integrally rotatably fitted onto the input shaft 19 between the bearing 22 and the gear 25, and a power take-off opening 45 is formed in the side wall of the gear case 6 in correspondence with the power take-off gear 44. It is formed.

The gear 43 is fitted onto the intermediate shaft 46 via a bearing 47 so as to be freely rotatable, and is also engaged with the power take-off gear 44 through the power take-off opening 45 . It is inserted into the inner end and fixed by a roll pin 48.

Note that 49 is a protective cover for the power take-off shaft 37, which is detachably attached to the power take-off case 36 with bolts or the like.

The transmission mechanism 1 is wound around the spline portion 39 of the power take-off shaft 37.
Eight pulleys 50 are detachably attached.

Next, the action will be explained.

When a universal joint shaft is connected to the input shaft 19 and the input shaft 19 is driven, the power is transmitted to the gear 25, the gear 26, and the transmission shaft 2.
0, bevel gear 33, bevel gear 35 to transmission shaft 3
4 to the claw shaft 10, and as the claw shaft 10 rotates, the tilling claws 11 can till the field.

On the other hand, a power extraction gear 44 and a gear 43 from the input shaft 19
Since the power is transmitted to the power take-off shaft 37 via the gear 42, a part of the power can be taken out from the power take-off shaft 37 on the rotary device 1 side. drive the liquid feed pump 14 of
Pest control work can be carried out.

In other words, rotary work by rotary device 1 and pest control machine 2
Combined work with pest control work is possible.

In this case, the power take-off shaft 37 is located near the side of the gear case 6, that is, at the upper center of the rotary machine frame 3, and is also behind the support arm 7, so it may not be covered with grass, mud, or the human body. There is very little risk of contact with other people, power can be extracted safely, and the minimum necessary safety measures are sufficient in terms of location.

Furthermore, since the power take-off case 36 is attached to the side wall of the gear case 6, the amount of rearward protrusion of the power take-off shaft 37 itself can be reduced compared to a case that is attached to the rear wall of the gear case 6. It is easy to transmit power to the second class.

In other words, when attaching the pest control device 2 to the rotary device 1, it is considered most common to place it on the front side of the rotary device 1 in view of the weight balance when ascending. If the take-out shaft 37 is located on the front side, mutual connection is very easy, and there is no need for unreasonable power transmission.

In the above embodiment, the power extraction opening 45 is formed in the side wall of the gear case 6, and the power is extracted from the side of the gear case 6. For example, as shown in FIG. A power extraction opening 51 is also formed on the upper wall,
If the power extraction case 36 and the blind cover 52 are selectively attached to the openings 45 and 51, the power extraction position can be selected depending on the working machine.

The gear 43 in the power take-off case 36 is not necessarily necessary, and can be omitted if the rotational direction of the power take-off shaft 37 does not matter.

The power take-off shaft 37 may be made to protrude forward from the power take-off case 36.

In this invention, the power take-off shaft of the power take-off case is attached to the gear case at the top of the rotary machine frame so as to be linked to the power take-off gear of the input shaft. It can drive working equipment and can greatly contribute to the combination of low clearance work and other work.

In addition, an opening is provided in the gear case corresponding to the power take-off gear, and the power take-off shaft is interlocked with the power take-off gear through this opening, so the power take-off shaft is provided on the rear extension of the input shaft. The power take-off shaft can be positioned forward compared to the conventional rotary machine. Therefore, even when the work machine is mounted on the rotary machine frame and driven, it can be moved to the front, and the rotary machine side Good front and rear weight balance.

Moreover, a transmission shaft is installed parallel to the input shaft, and these shafts are linked by a gear at the rear end, so that power is transmitted from the input shaft to the transmission shaft in the horizontal direction via the gear and transmission shaft. There is no need to provide a bevel gear mechanism at the rear end of the input shaft, and the gear can be a simple flat gear or the like.

In addition, if a bevel gear is used, it is normal to install a bearing at the rear end of the input shaft to receive the thrust load of the bevel gear, and if a power take-off gear is added in addition to this, the rear end of the gear case The amount of protrusion becomes large.

However, in the present invention, while the configuration is such that a spur gear etc. can be used as described above, a bearing is provided near the front of the input shaft to support the input shaft, and a power take-off gear is provided between this bearing and the gear. Although the power take-off gear is additionally equipped, the amount of protrusion of the gear case toward the rear side is reduced, and thus, in combination with the above-mentioned effects, the power take-off shaft can be positioned on the front side. .

In addition, since the power output shaft power button is located at the top of the machine frame,
It can prevent grass etc. from getting entangled.

In addition, there is no contact with the human body, making it extremely safe.

[Brief explanation of the drawing]

Fig. 1 is a rear view showing an embodiment of the present invention, Fig. 2 is a cross-sectional plan view of the gear case section, and Fig. 3 is A-A in Fig. 2.
4 is a vertical cross-sectional rear view showing another embodiment, and FIG. 5 is a cross-sectional plan view showing another embodiment. 1...Rotary device, 2...Best control machine,
3... Rokuri machine frame, 6... Gear case, 7... Support arm, 14... Liquid feed pump, 17... Power Retrieval device, 19...
...Input shaft, 36...Power extraction case, 37
...Power take-off shaft, 44...Power take-off gear, 45...Power take-off opening, 46...
...Intermediate shaft, 49...Protection cover, 51...
...Power extraction opening, 52...Blind lid, 5
3...Bevel pinion.

Claims (1)

[Scope of utility model registration request] A gear case 6 having an input shaft 19 protruding forward is provided on the upper part of the rotary machine frame 3, and a transmission shaft 34 interlocking with the input shaft 19 is provided laterally within the gear case 6. In a rotary device that transmits power to a pawl shaft 10 via a transmission mechanism on the side of a machine frame 3, a transmission shaft 2 is installed in a gear case 6 parallel to an input shaft 19.
0 is provided, and the input shaft 19 and the transmission shaft 20 are interlocked via gears 25 and 26 at the rear end, and the transmission shaft 2
A bearing 22 that supports the input shaft 19 near the front of the gear 25 is provided in the gear case 6, and a power take-off gear 44 is provided between the bearing 22 and the gear 25. A power take-off opening 45 is provided in the gear case 6 corresponding to the power take-off gear 44, and the power take-off shaft 3 interlocks with the power take-off gear 44 through this opening 45.
7. A power take-off device for a low-criteria device, characterized in that a power take-off case 36' having a power take-off case 7 is provided in a gear case 6.