JP5785649B1 - Bearing unit breakage prevention mechanism of belt rod conveyor rotating shaft in beet harvester - Google Patents

Abstract

An object of the present invention is to prevent sediment deposited from a harvester belt rod conveyor from entering a bearing unit of a drive rotary shaft. In a belt rod conveyor in which a belt rod conveyor unit is installed between a driving gear member of a rotating shaft supported by a bearing unit and a driven rotating shaft, a flange portion that closes a gap between the driving rotating shaft and a through hole and driving rotation A sediment entry prevention bracket made of a hollow sleeve covering the shaft is formed, and a flange portion of the sediment entry prevention bracket is fixed to the inner surface of the frame corresponding to the bearing unit on the outer surface of the frame. [Selection] Figure 9

Description

  The present invention relates to a mechanism for preventing damage to a bearing unit of a belt rod conveyor rotating shaft attached to a root crop harvesting machine such as a beet. The present invention relates to a bearing unit breakage prevention mechanism that suppresses intrusion of the earth and sand that has entered the bearing unit.

As shown in FIG. 1, a crop rod harvester 1 that harvests beets and the like in a field is attached with a belt rod conveyor 4 for transporting a crop dug up with a digging claw 2 to a rotary lifting machine 3 at the rear of the chassis. Yes.
As shown in FIGS. 2, 3 and 4, the belt rod conveyor 4 has a driving rotary shaft 6 and a driven rotary shaft 7 arranged in a predetermined span along the longitudinal direction of the left and right parallel frames 5 and 5. An endless (annular) belt rod conveyor unit 4a is installed between the drive rotary shaft 6 and the driven rotary shaft 7.
The drive rotating shaft 6 is rotatably supported by bearing units 8 and 8 fixed to the outer side surfaces of the left and right frames 5 and 5 so as to receive a rotational driving force from a driving device (not shown).

As shown in FIG. 2, a pair of left and right drive gear members 9, 9 are fixed to the shaft body of the drive rotating shaft 6 so as to be integrally rotatable by a coupling bracket 10 in the vicinity of the inside of the left and right frames 5, 5. Yes.
As shown in an enlarged view in FIG. 5, each drive gear member 9, 9 is integrated with an annular belt support portion 9 b in which a plurality of comb teeth 9 c protrude from the side surface (the frame 5 side) of the circular gear portion 9 a. It is formed, and is fixed to the left and right sides of the drive rotating shaft 6 by a coupling bracket 10 (see FIG. 2).

  The belt rod conveyor unit 4a is composed of an endless annular saw member in which both ends of a number of rods 12 and 12 are fixed between a pair of left and right belt portions 11 and 11, as shown in FIGS. The gap is engaged with the gear portion 9a of the drive gear members 9, 9, and the belt portions 11, 11 are connected between the belt support portions 9b, 9b of the left and right drive gear members 9, 9 and the belt receiving portions 7a, 7b of the driven rotary shaft 7. It is built to be able to rotate.

In the belt rod conveyor 4 having such a configuration, the belt portion 11 is rotated while the earth and sand is shaken off from the gap between the rods 12 and 12 in the process of conveying crops such as beet dug up from the field. The earth and sand that has fallen on the inner surface of 11 is pressed against the driven rotating shaft 7 and adheres to the belt portion 11.
When the belt portion 11 with the earth and sand adhering to the inner peripheral surface rotates to the belt support portion 9b of the drive gear member 9, friction with the comb teeth (9c) of the belt support portion 9b as shown in FIG. The earth and sand is scraped off, and gradually grows as accumulated earth and sand 18 between the inner side of the circular comb teeth of the belt support portion 9b and the frame 5.

As shown in FIG. 7, the belt rod conveyor 4 is generally driven because it is rotatably supported by a bearing unit 8 in which a drive rotary shaft 6 loosely fitted in a through hole 13 of the frame 5 is fixed to the outer surface of the frame 4. Between the shaft body of the rotating shaft 6 and the through-hole 13 of the frame 5, there are gaps 14a and 14b communicating with the bearing unit 8.
For this reason, the earth and sand 18 accumulated in the belt support portion 9b enters the frame 4 from the four inner gaps 14a, and further enters the bearing unit 8 from the outer gap 14b of the frame 4. As a result, there has been a problem that the bearing casing 15 of the bearing unit 8 is deformed and destroyed by the intrusion pressure of the earth and sand, and the internal bearing pops out.

JP 2009-45017 A

  In JP 2009-45017 A, in a crop digging apparatus, as a means for preventing adhesion of earth and sand falling from a rod-type belt conveyor to a rod mounting bolt portion, mounting that rotates the left and right longitudinal corners of the conveyor A technique for disposing a cover plate above the track of the bolt group is disclosed.

  An object of the present invention is to provide a crop harvesting machine in which a drive rotating shaft and a driven rotating shaft are supported in the longitudinal direction of the left and right frames, and an annular belt rod conveyor unit is rotatably installed between the driving rotating shaft and the driven rotating shaft. An object of the present invention is to provide a bearing unit breakage prevention mechanism that prevents sediment deposited between a belt support portion of a drive gear member fixed to a drive rotary shaft and a frame from entering the bearing unit of the drive rotary shaft.

  In order to achieve the above object, the bearing unit breakage prevention mechanism of the present invention includes a drive rotation shaft and a driven rotation shaft, to which a drive gear member composed of a gear portion and a belt support portion is fixed, between the opposing through holes of the left and right parallel frames. In a belt rod conveyor that is fitted with a predetermined span and is rotatably supported by a belt rod conveyor unit between a drive gear member of the drive rotation shaft that is pivotally supported via a bearing unit and a belt receiving portion of the driven rotation shaft. A flange portion that closes a gap between the drive rotation shaft and the through hole and a earth and sand intrusion prevention bracket formed of a hollow sleeve body that covers the drive rotation shaft are formed, and the flange portion of the earth and sand intrusion prevention bracket is formed on the outer surface of the frame. It is characterized by being fixed on the inner surface of the frame corresponding to the bearing unit.

  The earth and sand intrusion prevention bracket may have a structure in which the flange portion and the hollow sleeve body are integrally coupled, or the flange portion and the hollow sleeve body are divided into two parts in the axial direction, and are tangled from both sides around the shaft body of the drive rotating shaft 6. In this way, they may be combined together.

  Preferably, the hollow sleeve body of the earth and sand intrusion prevention bracket is brought close to the fixed base portion of the drive gear member so as to cover the drive rotation shaft.

  The gap between the drive rotation shaft and the frame through-hole is closed by the flange, and the rotation shaft of the sediment accumulation part is covered with the hollow sleeve body, so even if the pressure of the sediment is increased, the intrusion of sediment into the bearing unit is suppressed, Damage to the bearing unit is prevented.

  In the embodiment in which the hollow sleeve body of the earth and sand intrusion prevention bracket is extended to the base in the belt support portion of the drive gear member, the earth and sand pressure on the bearing unit is almost eliminated, so that the damage prevention effect is further improved.

Schematic perspective view of a crop harvester in which the present invention is utilized Perspective view of frame for unit mounting of belt lot conveyor Assembly perspective view of belt lot conveyor AA line main part sectional view of FIG. Enlarged perspective view of drive gear member Enlarged view of assembly of drive gear member and belt rod conveyor unit Illustration of sediment accumulation in the belt rod conveyor of FIG. Installation explanatory diagram of the earth and sand intrusion prevention bracket according to one embodiment of the present invention Installation explanatory drawing of the earth and sand intrusion prevention bracket according to another embodiment of the present invention Assembly explanatory diagram of the earth and sand intrusion prevention bracket according to the present invention

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Since the above description with reference to FIGS. 2 to 9 is a premise of the present invention, it is incorporated as a part (premise) of the embodiment of the present invention to avoid duplication.

  In the belt rod conveyor 4 of the crop harvesting machine such as beet described above, the bearing unit breakage prevention mechanism of the present invention covers the flange portion 16a having the insertion hole of the drive rotary shaft 6 and the outer peripheral surface of the drive rotary shaft 6. An earth and sand intrusion prevention bracket 16 integrally formed with a hollow sleeve body 16b is formed, and the flange portion 16a of the earth and sand ingress prevention bracket 16 is fixed to the inner wall surface of the frame 5 corresponding to the bearing unit 8 on the outer side of the frame 5 Thus, the gap 14a between the drive rotary shaft 6 and the through hole 13 of the frame 5 is closed by the flange portion 16a, and the drive rotary shaft 6 is covered with the hollow sleeve body 16b, so that the sedimentary sediment 18 is contained in the hollow sleeve body 16b. In addition, the structure does not enter the gap 14a.

  FIG. 8a illustrates the earth and sand intrusion prevention bracket 16 in which the flange portion 16a in which the insertion hole passage of the drive rotary shaft 6 is formed and the hollow sleeve body 16b are integrally formed as a single bracket.

  The earth and sand intrusion prevention bracket 16 according to the present invention is not limited to the above configuration, and as shown in FIG. 8b, the earth and sand invasion prevention bracket 16 is divided into two parts in the axial direction centering on the left and right bolt mounting portions. It is configured by 19a, 19b, and may be formed in the integrated earth and sand intrusion prevention bracket 16 by tying the divided members 19a, 19b through the coupling member 20 from both sides of the drive rotary shaft 6 mounted on the bearing unit 8. .

  In any case, it is desirable that the earth and sand intrusion prevention bracket 16 is coupled to the bearing unit 8 outside the frame by passing the left and right mounting bolts 17 and 17 provided on the flange portion 16a through the frame 5.

The earth and sand intrusion prevention bracket is formed of a material having a required strength such as metal or hard plastic, like the frame.

  Since the bearing unit of the drive rotary shaft is protected from breakage by the earth and sand intrusion prevention bracket, the trouble of the belt rod conveyor is suppressed and it contributes to the improvement of the harvesting work efficiency.

DESCRIPTION OF SYMBOLS 1 ... Crop harvesting machine 2 ... Digging claw 3 ... Rotating lift 4 ... Belt rod conveyor 4 ... Belt rod conveyor unit 5 ... Frame 6 ... Drive rotating shaft 7 ... Driven rotating shaft 7a, 7b ... Belt receiving part 8 ... Bearing Unit 9: Drive gear member 9a ... Gear portion 9b ... Belt support portion 9c ... Comb tooth 9d ... Fixed base portion 10 ... Connection bracket 11 ... Belt portion 12 ... Rod 13 ... Through hole 14a, 14b ... Clearance 15 ... Bearing casing 16 ... Earth and sand intrusion prevention bracket 16a ... flange portion 16b ... hollow sleeve body 17 ... mounting bolt 18 ... sedimentary earth and sand 19a and 19b ... split member 20 ... coupling member

Claims (1)

The drive rotation shaft (6) and the driven rotation shaft (7), to which the drive gear member (9) consisting of the gear portion (9a) and the belt support portion (9b) is fixed, are connected to the left and right parallel frames (5) and (5). The drive gear members (9), (9) of the drive rotary shaft (6) fitted with a predetermined span between the through holes (13), (13) and pivotally supported via the bearing unit (8) In a belt rod conveyor (4) in which a belt rod conveyor unit (4a) is rotatably mounted between belt receiving portions (7a) and (7b) of a driven rotation shaft (7), the drive rotation shaft (6) is passed through. A flange portion (16a) that closes the gap (14a) between the holes (13) and a hollow sleeve body (16b) that covers the outer peripheral surface of the drive rotating shaft (6) are integrally formed , and the hollow sleeve body (16b) The flange part (16a) of the earth and sand intrusion prevention bracket (16) with the tip of the blade close to the fixed base part (9d) of the drive gear member (9) A mechanism for preventing damage to a bearing unit of a rotating shaft of a belt rod conveyor in a harvesting machine, wherein the bearing unit (8) is fixed to an inner surface of the frame ( 5 ) in correspondence with the bearing unit (8)

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