JPH0444041Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a rotor structure for a grass collector, and in particular, to a rotor structure for supporting a tine arm on a rotor portion that is rotationally driven by an output shaft of a tractor. This invention relates to a rotor structure with an improved bearing mounting structure.

[Prior art] Generally, the rotor structure of a grass collector is the sixth rotor structure.
What is shown in FIG. 7 and FIG. 7 is known.

First, as shown in FIG. 6, the rotor structure a includes a bevel wheel c that rotates in the horizontal direction by the output shaft b of the tractor, a rotor housing d and a rotating rotor e that are coaxially attached to the bevel wheel c. An induction cam g coaxially attached to the rotor housing d for transmitting output to the tine arm f, and a tine arm bearing h supported by the rotor housing d and the swing rotor e to pivotally support the tine arm f. It mainly consists of

As shown in FIGS. 6 and 7, the tine arm bearing h has one end attached to the rotor housing d close to the axial center of the rotor section, and the other end has a diameter larger than that of the rotor housing d. It is attached and fixed to the rotating rotor e.

Specifically, as shown in FIG. 7, the tine arm bearing h is provided with a mounting bracket i on the rotor housing d side thereof, and mounting brackets j and k on both sides of the tine arm bearing h, facing the rotating rotor e side. It is provided. In particular, the rotating rotor e is formed from a relatively thin steel plate in order to reduce its weight. Therefore, the tine arm bearing h is attached to the swing rotor e by extending the reinforcing stay l over the swing rotor e and tightening the two mounting brackets j and k with bolts.
It is fixed at One end of this reinforcing stay l extends and is superimposed on one mounting bracket j on the swing rotor e side of the adjacent tine arm bearing h, and together with this, is bolted and fixed to the swing rotor e, and the tine arm The bearings h are configured to support each other horizontally along the rotating rotor e. Therefore, the tine arms f, which are supported by the respective tine arm bearings h, are supported in the same plane around the axis of the rotor portion at predetermined intervals.

[Problem to be solved by the invention] In the rotor structure of the conventional grass collector, as shown in FIGS. 6 and 7, the tine arm f
Mounting brackets j and k attached to both sides of the tine arm bearing h that supports the
It will be attached to the swinging rotor e with bolts, which can certainly strengthen the lightweight swinging rotor e, but this reinforcing stay l
Since the tine arm bearing h is fixed to the swing rotor e by interposing the tine arm bearing h, there is a problem that the number of parts and the number of assembly steps increase.

In addition, the tine arm bearing h needs to be periodically maintained and inspected. Conventionally, during this maintenance and inspection, the bearing h is removed from the swing rotor e and rotor housing d, so it is necessary to reinstall the reinforcing stay l. , the work was complicated.

The present invention was devised to effectively solve problems in the rotor structure of conventional grass collectors.

The object is to provide a rotor structure for a grass collector that can reduce the number of parts and assembly man-hours for the rotor structure as a whole, and also facilitate maintenance and inspection of the tine arm bearing.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a rotor section which is rotatably driven by the output shaft of a tractor, and has base ends arranged at predetermined intervals along the circumferential direction of the rotor section. The tine arms are engaged with each other and extend radially outward, and one end of the tine arms is supported at the base of the tine arm by the rotor housing of the rotor part, and the other end is supported by the rotating rotor to extend the longitudinal direction of the tine arm. In a rotor structure of a grass catcher, which is provided with a tine arm bearing for surrounding and supporting the rotor for a predetermined length in a direction, the tine arm bearing is provided with a bracket for attachment to the rotor housing, and the side where adjacent bearings face each other. It is constructed by providing brackets that extend integrally with each other and engage with each other to support each tine arm bearing at predetermined intervals around the axis of the swing rotor and on the same plane.

[Function] Tine arm bearings that pivotally support the tine arms provided radially at predetermined intervals around the circumference of the rotor are attached to the rotor housing on the axis side of the rotor, with one end attached to the rotor housing using a bracket, and the other end attached to the rotor housing. These mounting brackets are attached to the rotating rotor with mounting brackets extending in opposite directions, and these mounting brackets are overlapped and engaged with each other to be attached to the rotating rotor. supports adjacent tine arm bearings in the same plane, thereby reinforcing the swing rotor.

Furthermore, since the mounting brackets that engage with each other are integrally formed with the bearing, the number of parts does not increase, and the number of assembly steps including maintenance and inspection can be reduced, making the work easier.

[Example] Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

First, as shown in Fig. 2, the grass collector 1 mainly includes a three-point frame 2 for connecting to a tractor;
Main frame 3 attached to this three-point frame 2
The rotor section 5 is rotatably driven by an input shaft 4 connected to the output shaft of the tractor, and a tine arm 7 attached to the rotor section 5 and having tines 6 at its tip. A running wheel 8 is attached to the rotor portion 5 for towing the grass collector 1 according to the running of the tractor.

As shown in FIG. 3, the rotor section 5 mainly includes a bevel wheel 9 rotated by the input shaft 4, a rotor housing 10 integrally and coaxially attached to the bevel wheel 9, a rotating rotor 11, and a vertical shaft 13. The guide cam 12 is fixed to the guide cam 12.

The bevel foil 9 and the rotor housing 10 are rotatably supported around a vertical axis 13. The rotating rotor 11 has a larger diameter than the rotor housing 10 and extends outward. On the other hand, the tine arm 7 is connected to the guide cam 12 via a cam floor 14 and a crank 15. As shown in FIG. 1, the base end of the tine arm 7 is engaged at a predetermined interval along the circumferential direction of the guide cam 12 constituting the rotor section 5, and extends radially or radially outward. has been done. As shown in FIGS. 1 and 3, these tine arms 7 are supported by tine arm bearings 16 on the rotor portion 5 side.

In particular, the present invention improves this tine arm bearing 16. As shown in FIGS. 1 and 4, the tine arm bearing 16 is formed into a cylindrical shape so as to surround the tine arm 7 for a predetermined length along the longitudinal direction of the tine arm 7 and pivotally support the tine arm 7. The tine arm bearing 16 is integrally provided with a mounting bracket 17 on the side adjacent to the induction cam 12 for connecting and supporting the rotor housing 10.

The tine arm bearings 16 are also provided with engaging brackets 18 and 19 that extend integrally with the tine arm bearings 16 on the sides facing each other. These engagement brackets 18, 19
extend a predetermined length so as to overlap and engage one of the engagement brackets 18 or 19 of the adjacent tine arm bearings 16, and when these are overlapped and connected, the rotating rotor 1
1, the tine arm bearings 16 are mutually pivotally supported in the same plane. As shown in FIG. 5, one of the engagement brackets 18 and 19 is connected to the adjacent tine arm bearing 1.
The extension from the bearing 16 is provided with a step so as to overlap and engage with the other engagement bracket 19 of the bearing 6. In addition, these engagement brackets 18 and 19 have insertion holes 2 for joint tightening bolts 20.
2 is formed, one engagement bracket 19
A female thread is formed in the insertion hole 22 to be screwed into the male thread of the bolt 20. Therefore, the locking bolt 20 is inserted through the insertion hole 23 provided in the rotating rotor 11 to tighten the engagement bracket 1.
By inserting and screwing into the respective insertion holes 22 of 8 and 19, the adjacent tine arm bearings 16 are engaged with each other in the horizontal direction along the rotating rotor 11 and are supported. That is, the engaging brackets 18 and 19 are stacked on top of each other and engaged with the bolt 20 for co-tightening to form a support ring.

On the other hand, the mounting bracket 17 is joined to the rotor housing 10 by inserting a tightening bolt 25 through the insertion hole 22 into the insertion hole 24 provided in the rotor housing 10 and screwing it together, as shown in FIG. It supports one end of the tine arm bearing 16.

Additionally, as shown in Fig. 4, the mounting bracket 17
and one engagement bracket 18 are provided with reinforcing ribs 26 that are integrally provided on the bearing 16 so as to extend along the outer periphery of the bearing 16, and the mounting bracket 17 and the engagement bracket 18 are tied together.

Furthermore, these engagement brackets 18, 19 and mounting bracket 17 are integrally formed with a cylinder 27 that constitutes the tine arm bearing 16.
Specifically, when the cylinder 27 is cast, the engagement brackets 18, 19 and the mounting bracket 17 are integrally cast.

As shown in FIG. 3, the rotating rotor 11 is provided with a dustproof cover 28 that covers the lower part thereof.
As shown in FIG. 5, the dustproof cover 28 is detachably attached to the lower surface of the engagement bracket 19 by being fixed to the lower surface of the engagement bracket 19 with a mounting screw 29. As shown in FIG.

Next, the operation of this embodiment will be described. As shown in FIGS. 2 and 3, when the input shaft 4 rotates with the output shaft of the tractor, the bevel wheel 9 constituting the rotor section 5 is driven to rotate. As a result, the rotor housing 10 rotates, the tine arm 7 is controlled and driven by the induction cam 12 via the crank 15, and the tines 6 are pivoted upward from the ground and in the opposite direction to the rotor section 5. become.

By the way, as shown in FIG. 1, each tine arm bearing 16 is supported by the rotating rotor 11 with the engagement brackets 18 and 19 overlapping each other and the bolts 20 for tightening together. , 19 connect and support the respective tine arm bearings 16 along the circumferential direction of the swing rotor 11 and also serve as a reinforcing ring, so that the swing rotor 11 is not specially reinforced. Additionally, reinforcing stays and the like are not required, reducing the overall number of parts. Furthermore, during assembly, the engagement brackets 18 and 19 can be stacked together and screwed together using bolts 20 for joint tightening, thereby making it possible to attach them to the rotating rotor 11, making the work easier. Furthermore, when removing the tine arm bearing 16 from the swing rotor 11 etc. during maintenance and inspection, the work efficiency is facilitated by simply removing the co-tightening bolt 20.

[Effects of the invention] The invention has the following excellent effects: (1) The number of parts and assembly man-hours for the entire rotor structure can be reduced as much as possible.

(2) Maintenance and inspection of the rotor section including the tine arm bearing can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an embodiment of the present invention;
Fig. 2 is a side view of a grass grass collector equipped with the rotor structure of the present invention, Fig. 3 is a schematic side sectional view of the rotor of the present invention, Fig. 4 is a perspective view of the tine arm bearing used in the present invention, and Fig. 5 The figure is a side sectional view showing the engaged state of the engagement bracket, FIG. 6 is a schematic side sectional view showing a conventional rotor structure, and FIG. 7 is a plan view thereof. In the figure, 5 is a rotor part, 6 is a tine, 7 is a tine arm, 10 is a rotor housing, 11 is a swing rotor, 16 is a tine arm bearing, 17 is a mounting bracket, and 18, 19 are engagement brackets.

Claims (1)

[Scope of utility model registration request] A rotor portion which is rotationally driven by an output shaft of a tractor is provided with tine arms whose base ends are engaged and extend radially outward at predetermined intervals along the circumferential direction of the rotor portion. A tine arm bearing is provided at the base of the tine arm, one end of which is supported by the rotor housing of the rotor unit, the other end of which is supported by the rotating rotor, and the tine arm bearing surrounds the rotor for a predetermined length in the longitudinal direction. In the rotor structure of the grass collector, the tine arm bearing is provided with a mounting bracket for attachment to the rotor housing, and adjacent bearings are integrally extended to opposite sides and engaged with each other, and each tine arm bearing is attached to the rotor housing. A rotor structure for a grass collector, characterized in that brackets are provided around the axis of the rotating rotor at predetermined intervals and for supporting the rotor in the same plane.