JP2003009647A - Pickup apparatus for roll baler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pickup apparatus for roll baler, with which upward scraping of hay is smoothly carried out by pickup tines, penetration of waste hay into tine covers is prevented and penetrated hay waste is readily discharged when present. SOLUTION: In this pickup apparatus for roll baler, tine path 3 between the tine covers 2 for rotating and guiding the pickup tines 1 are widely formed at a projection position A in which the pickup tines 1 are projected outward from the inside of the tine covers 2 and narrowly formed at an upward scraping action zone B of the projected pickup tines 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll baler pickup device.

[0002]

2. Description of the Related Art Tine guides for guiding rotation while retracting a pickup tine are arranged in parallel along both left and right sides of the pickup tine.

[0003]

A large number of pickup tines are arranged over the width of the pickup, and appear and disappear at the back of the passage formed between the tine guides.
Since the front side is rotated in a protruding posture to scrape up the hay on the ground, this pickup tine is apt to roll laterally, and the frictional resistance in the tine passage, the resistance due to the pulling in of the scooped grass, and the like are likely to work.

[0004]

According to a first aspect of the present invention, the tine passage 3 between the tine covers 2 for rotationally guiding the pickup tine 1 is provided with a protrusion for the pickup tine 1 to project outward from the inside of the tine cover 2. The roll baler pick-up device is characterized in that the pick-up tine 1 has a wide width at the position A and has a narrow width at the raking action area B of the projected pick-up tine 1. The invention according to claim 2 is characterized in that the tine cover 2 is closed over the entire width.

[0005]

According to the invention described in claim 1, each pickup tine 1 projects outward at the projecting position A of the tine passage 3 between the tine covers 2 and projects outwardly in the scraping action area B. You can rotate and scrape the grass on the ground. Since the protruding position A of the tine passage 3 is formed wide, it is easy for the pick-up tine 1 to project. Further, the straw debris entering the tine cover 2 is combined with the projecting action of the tine 1 to make it wider. It is quickly discharged from the passage 3 and a smooth scraping action can be performed. In addition, in the raking action area B, the protruding state of the pick-up tine 1 which is in the protruding state is supported and guided by the side edge of the tine cover 2 of the narrow tine passage 3 so that the pick-up tine 1 can be laterally moved regardless of the grass-taking resistance. It is possible to prevent shaking and to perform stable and efficient scraping, and it is possible to reduce the involvement of grass from the tine passage 3. According to the second aspect of the present invention, the scraping action area B of each tine passage 3 is formed to have a narrow width, and the tine cover 2 between the tine passages 3 is closed over the entire width. The grass can be prevented from invading and a smooth scraping action can be performed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIGS.
It will be described based on. The roll baler has a schematic structure in which a grass is placed on a vehicle body 5 having a pair of right and left crawlers 4 and a bale chamber 1.
0 is provided, and a bale 8 including a bale conveyor 7 for bale-forming the grass in the bale chamber 10 into a roll is provided, and an engine 9, a transmission device, an operating lever 11, and a handle are provided on the side of the bail 8. 12, driver's seat 13 and the like are arranged. A pickup device 14 for scraping crops, grass, hay, etc. cut off on the ground is provided in front of the baler 8 and sends the scraped grass to the carry-in conveyor 6.

Discs 15 are fixed or rotatably provided on the left and right sides of the bale chamber 10, and the left and right sides of the bale conveyor 7 are wound around the outer periphery of the disc 15. A fixed cover 16 in the first half and an open / close cover 17 in the second half are provided to cover the bale conveyor 7 and the bale chamber 10. A drive shaft 18 arranged in the fixed cover 16 and an opening / closing shaft 19 above which is an opening / closing rotation supporting shaft of the opening / closing cover 17.
Sprockets are provided at both ends of the intermediate shaft 20 arranged in the opening / closing cover 17, the end shaft 21 at the lower end, etc., and the chains at the left and right sides of the bail conveyor 7 are hung over them. There is. The carry-in conveyer 6 drives the drive shaft 22 at the rear end to rotate the pickup device 14 to scrape grass, and inherits the scraped grass and sends it into the bale chamber 10. The bale conveyor 7, which is rotated by the drive of the drive shaft 18, connects the bale chamber 10 to the disc 1
The grass which is rotated so as to bypass the outer periphery of 5 and is fed from the carry-in conveyor 6 to this lower portion is bale-formed into a roll. The grass bale-molded in this roll winding is bound by winding a string 23 provided in the fixed cover 16 by a binding device 24. The grass thus bale-formed is opened rearward by the rotation of the opening / closing cover 17 around the opening / closing shaft 19 and discharged on the guide plate 25 rearward.

The pickup device 14 is supported around a support shaft 26 of a front bracket 27 of the vehicle body 5 and is vertically rotated. The front end of the carry-in conveyor 6 is also hung around the support shaft 26. The tine cover 2 and the pickup tine 1 are arranged between the pair of left and right side plates 28.
The tine cover 2 is formed to have a predetermined width, forms tine passages 3 at regular intervals, and is provided in parallel in the lateral width direction to form a cylindrical shape. A connecting plate 29 extending in the lateral direction is provided along the rear upper part, and upper and lower end portions 42 and 43 of the tine covers 2 are fixed to the upper and lower end edges of the connecting plate 29 by bolting or the like, and the connecting plate 29 has a substantially cylindrical shape as a whole. Shaped cover cylinder 30
Is formed. At the center of the cover cylinder 30, a pickup shaft 31 is supported between the left and right side plates 28,
A chain 32 is hung between one end of the chain 32 and a support shaft 26 driven via the bale conveyor 6 and is rotated. Drive plates 34 that rotate by bearing both ends of the tine shaft 33 are fixed to both ends of the pickup shaft 31. A crank arm 35 and a tip end roller 36 are provided at both ends of each tine shaft 33 driven by the drive plates 34. The roller 36 is fitted in a guide groove between the inner and outer cam guide plates 37, 37 provided inside the side plate 28 to guide the roller 36, whereby the tine shaft 33 is swung and disposed on the tine shaft 33. The protruding posture of the pickup tine 1 is controlled. The tine shaft 33 is supported by the side plate 34 in a triangular arrangement.

The pickup tine 1 arranged on each tine shaft 33 is made of a piano wire, and has a spring characteristic by winding a base portion in a curl shape. The pair of left and right bases is bent into a U shape to form a connecting portion 38, and the connecting portion 38 is used as the tine shaft 33.
Of the bolt 40
Attach it to the tine shaft 33 by tightening. Such a pickup tine 1 is rotated by the rotation of the pickup shaft 31.
The tine shaft 33 is rotated by being guided by the cam guide plates 37, 37, and the cover cylinder 30 is rotated at the retracted position C in the upper rear part.
It can be pulled inward and protruded outward from the tine passage 3 at the protruding position A in the lower rear part, and in the raking action area B extending from the lower front part to the upper part, it can rotate and rise in a protruding posture to scrape grass on the ground. .

Here, the tine cover 3 forming the tine passage 3 is formed in a sheet metal form so that the left and right side edge portions 41 are formed narrow at the protruding position A portion and wide at the scraping action area B portion. Between these two positions A and B, an inclined edge having a wider width is formed. Therefore, by disposing the tine covers 2 along the axial direction,
The tine passage 3 formed in the arrangement interval portion is formed as a wide portion 44 at the projecting position A, and is formed as a narrow portion 45 in the raking action area B that is sufficient for the pickup tine 1 to rotate. To be done.

The pickup tine 1 of each tine shaft 33 that is rotated by the rotation of the pickup shaft 31 is rotated by the crank arm 35 guided by the cam guide groove 37 at the retracted position C where the connecting plate 29 is located. In the state where the cover tube 30 is retracted, the wide portion 44 of the tine passage 3 is projected outward in the rotation range of the subsequent protruding position A. At this time, in the wide portion 44, the protrusion of the pickup tine 1 is smoothly performed with little resistance. Moreover, even if there is grass dust that has entered the inside of the cover cylinder 30, it is easily discharged. In the narrow portion 45, each pickup tine 1 is projected to scrape up grass on the ground. Tine passage 3 at this time
The support guide of the pickup tine 1 in step 1 is stable, and the grass can be scraped up efficiently. Moreover, in this grass scraping process, since the tine cover 2 covers the space between the tine passages 3 in the narrow portion 45 so as to be closed by the plate surface, the invasion and the entrainment of the grass dust can be reduced. It is possible to make the grass scraping action smoothly.

In FIG. 8, the difference from the above example is that the tine passages 3 are formed in the tine covers 2, and the cover cylinder 30 can be constructed by connecting the tine covers 2 in the axial direction. The tine passages 3 are formed in each tine cover 2 over one or several lines.

[0013]

[Brief description of drawings]

FIG. 1 is a perspective view of a tine cover portion and an enlarged perspective view of a part thereof.

FIG. 2 is a plan view of the pickup device section.

FIG. 3 is a side view thereof.

FIG. 4 is a side view of the cam guide groove portion.

FIG. 5 is a perspective view of the pickup tine portion.

FIG. 6 is a side view of the roll baler.

FIG. 7 is a plan view thereof.

FIG. 8 is a perspective view of a tine cover part showing another embodiment.

[Explanation of symbols]

1 pickup tine 2 tine cover 3 tine passage A scraping area

Claims (2)

[Claims] 1. A projection position (A) at which the pickup tine (1) projects outward from the tine cover (2) in a tine passage (3) between a tine cover (2) for rotationally guiding the pickup tine (1). ), The pick-up device of the roll baler is formed to be wide, and the pick-up tine (1) is formed to have a narrow width in the scraping action area (B). 2. The roll baler pick-up device according to claim 1, wherein the tine cover (2) is closed over the entire width.