JP2010081892A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To readily regulate the height and position of a narrow guide according to the culm length of stalks reaped in a pretreating part in a combine harvester having the narrow guide for carrying out grass-dividing of unreaped stalks on the side of an unreaped land of the pretreating part connected to the front of a traveling machine body. <P>SOLUTION: The combine harvester includes a shaking link 23 installed at the front of the traveling machine body 2 or in the pretreating part 5 thereof, and freely shaking in the front and rear directions of the traveling machine body 2. The intermediate part of the narrow guide 21 is supported on the shaking link 23 to constitute the narrow guide 21 so as to change the posture through the shaking link 23 into a grass-dividing operation posture A and a housed posture B. A height and position regulating mechanism R designed to regulate the height and position of the narrow guide 21 is installed on the side of a shaking fulcrum of the shaking link 23. As a result, the shaking link 23 is vertically moved through the height and position regulating mechanism R to thereby constitute the narrow guide 21 so that the height and position of the narrow guide 21 can be regulated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a combine equipped with a narrow guide for weeding uncut stem pods on an uncut ground side of a pretreatment unit connected to a front part of a traveling machine body.

Conventionally, on the uncut ground side of the pretreatment unit connected to the front part of the traveling aircraft, on the side of the pretreatment unit, the weeding work posture that projects from the side part of the pretreatment unit and weeds the uncut stems A swing guide provided in the front part or pre-processing part of the vehicle body to provide a narrow guide that can be changed to the retracted posture along the side, and to change the position of this narrow guide from the driver's seat. The base end of the link is connected to an operation lever that can be operated from the driver's seat, and the tip of the swing link is connected to a narrow guide via a flexible means, and the swing lever is operated by operating the control lever. A combine is known in which the posture of the narrow guide can be switched by swinging the shaft (for example, see Patent Document 1).
Japanese Patent Application No. 2006-129829 (page 3-4, FIG. 4 to FIG. 7)

  However, the stem length of the stems to be cut by the pretreatment unit varies depending on crop conditions such as varieties and regional conditions. Therefore, when stalking long stem culms, if the height of the middle part of the narrow guide is low, the ears will fall to the side of the traveling machine and come into contact with the machine frame, causing the stems to bend and the grains to fall off. It will occur. On the other hand, when cutting a short stalk, if the height of the middle part of the narrow guide is high, the uncut stalk is directed to the uncut ground side of the pretreatment part, that is, to the lateral side of the traveling machine body. There was a problem that the head part fell to the traveling machine body side without being able to weed and contacted the traveling part, resulting in dropout of grains.

The present invention aims to solve the above-described problems, and includes a narrow guide for weeding uncut stem pods on the uncut ground side of the pretreatment unit connected to the front part of the traveling machine body. In the combine, the first feature is that a height position adjusting mechanism capable of adjusting the height position of the narrow guide according to the length of the uncut stem culm is provided.
A swing link that swings freely in the front-rear direction of the traveling machine body is provided at a front portion or a pre-processing portion of the traveling machine body, and an intermediate portion of the narrow guide is supported on the swing link, and the narrow guide is moved in the swinging manner. A height position adjusting mechanism capable of adjusting the height position of the narrow guide is provided on the swing fulcrum side of the swing link, and is configured to be able to change into a weeding work posture and a retracted posture via the link, A second feature is that the height position of the narrow guide can be adjusted by moving the swing link up and down via the height position adjusting mechanism.

According to the invention of claim 1, by providing the height position adjusting mechanism capable of adjusting the height position of the narrow guide according to the length of the uncut stem culm, the culm length of the stem culm to be cut by the pretreatment section The height position of the narrow guide can be adjusted according to the culm length by the height position adjustment mechanism even if it fluctuates depending on crop conditions such as crop conditions, etc. The conventional problems such as bending of the stems and falling off of the grains caused by falling to the body side and coming into contact with the machine frame and the traveling part are eliminated.
A swing link that swings freely in the front-rear direction of the traveling machine body is provided at a front portion or a pre-processing portion of the traveling machine body, and an intermediate portion of the narrow guide is supported on the swing link, and the narrow guide is moved in the swinging manner. A height position adjusting mechanism capable of adjusting the height position of the narrow guide is provided on the swing fulcrum side of the swing link, and is configured to be able to change into a weeding work posture and a retracted posture via the link, Since the height position of the narrow guide can be adjusted by moving the swing link up and down via the height position adjusting mechanism, the narrow guide In adjusting the height position, it is possible to adjust the height position of the narrow guide while suppressing the lateral position change of the narrow guide, that is, the narrow guide protruding to the uncut stem side, This narrow With the adjustment of the height position of the ids min grass performance does not decrease.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a combine. The combine has a traveling machine body 2 supported by a pair of left and right crawler traveling apparatuses 1L and 1R which are traveling parts, and on the right side of the front part of the traveling machine body 2 is shown. An engine (not shown) is mounted, and a driver's seat 4 constituting the combine control unit 3 is disposed above the engine.

  On the other hand, on the left side of the front part of the traveling machine body 2, a pre-processing unit 5 for cutting and transporting stalks (grains) is connected so as to be movable up and down. The threshing unit 6 for threshing the grain from the stem and the stalk harvested by the unit 5 and selecting the grain, the grain tank 7 for temporarily storing the grain selected by the threshing unit 6, and the threshing The post-processing part 9 which cuts the waste conveyed from the part 6 via the waste conveying apparatus 8 is provided. The grains temporarily stored in the grain tank 7 can be discharged out of the machine via the grain discharge auger 11.

  More specifically, FIG. 2 is a side view of the pretreatment unit 5, and the pretreatment unit 5 causes the herb body 12 to be introduced while weeding the uncut stem stalk and the stem stalk to be introduced. The pulling device 13, the cutting blade device 14 for cutting the stem stock, the stock scraper 15 for sandwiching and transporting the stock of the stem, and the stump stem by the stock scraper 15 Proper handling of the stock transporter 16 for transporting the stock to a junction (not shown), the tip transport device 17 for transporting the ear side of the stalk stem, and the stems transported by the stock transport device 16 It is provided with a handling depth conveying device 18 and the like that are adjusted to the depth and then forwarded, and these devices (12 to 18) are longitudinal transmissions that extend forward and obliquely downward toward the front of the traveling machine body 2. Pretreatment with a cylinder 19a and a horizontal transmission cylinder 19b connected in a T-shape in plan view to the tip of the vertical transmission cylinder 19a as a main frame It is assembled to the frame 19.

  In addition, a narrow guide 21 for weeding the uncut stem pods (regulating falling) is provided on the uncut ground side (left side) of the pretreatment unit 5. The narrow guide 21 is formed of a pipe material facing in the front-rear direction of the traveling machine body 2, and its front end portion 21a is connected to the vicinity of the front end portion of the leftmost end weeding body support frame 22 so as to be swingable left and right. As shown in FIG. 3, a weeding work posture A (state indicated by a two-dot chain line) for weeding the uncut stem pods overhanging from the side of the preprocessing unit 5 on the uncut ground side of the preprocessing unit 5 The storage posture B (the state indicated by the solid line) along the side of the preprocessing unit 5 can be changed.

  A swing link 23 that swings freely in the front-rear direction of the traveling machine body 2 is provided on the front portion of the traveling machine body 2 or the uncut ground side (left side part) of the preprocessing unit 5. 23 is connected to an operation lever 24 (see FIGS. 1 and 4) that can be operated in a state where the operator is seated on the driver's seat 4 of the control unit 3 via a connection mechanism 25 and swings. The distal end portion of the link 23 is connected to the intermediate portion of the narrow guide 21 via the accommodation means 26.

  That is, as shown in FIG. 4, when the operation lever 24 is swung, the swing link 23 swings through the linkage mechanism 25, and the posture of the narrow guide 21 is switched to the weeding work posture A or the storage posture B. In addition to being able to perform the posture switching operation of the narrow guide 21 while the operator is seated on the driver's seat 4, it is possible to reduce costs by eliminating the need for an actuator such as an electric motor. it can.

  Next, specific configurations of the swing link 23, the operation lever 24, the linkage mechanism 25, and the accommodation unit 26 described above will be described. The accommodation means 26 includes a U-shaped hook 23a fixed to a connecting rail 21b provided in parallel on the rear end side of the narrow guide 21 and a distal end portion of a swing link 23 slidably connected to the connecting rail 21b. The narrow guide 21 and the swing link 23 are slidably accommodated, and the narrow guide 21 can follow the swing of the swing link 23. The rear end portion of the connecting rail 21b is bent into a U shape and inserted into the rear end portion of the narrow guide 21. On the other hand, the front end portion of the connecting rail 21 b is screwed to the fixing plate 21 c fixed to the narrow guide 21 by using bolts 27.

  Further, as shown in FIG. 5, the swing link 23 is made of a pipe material bent into a gentle S-shape, and a connection plate 23 b is fixed to the base end portion thereof. On the other hand, a bracket in which a support shaft (swinging fulcrum) 31a for swingably attaching the swing link 23 is provided upright on the front portion of the traveling machine body 2 or the uncut ground side (left side portion) of the pretreatment unit 5. 31, a boss 32 a that is rotatably fitted to the support shaft 31 a, and a rotating arm 32 that includes a mounting plate 32 b that is integrally fixed to the boss 32 a. Two mounting holes H1 and H1 drilled in the mounting plate 32b, a proximal positioning hole H2 drilled in the connecting plate 23b of the swing link 23, and a distal-side height position adjusting hole (elongate hole), which will be described in detail later. ) The mounting plate 32b and the connecting plate 23b can be integrally screwed using bolts 33, 33 and nuts 34, 34 (washer 35) in a state where H3 is matched.

  A connecting plate 32c for connecting the pair of wires 36, 36 constituting the linkage mechanism 25 to both ends is fixed to the boss 32a of the rotating arm 32 described above, and the operation lever 24 is swung. The connecting plate 32c rotates like a seesaw according to the reverse push-pull of the wires 36, 36, and the swing link 23 swings integrally with the rotation of the connecting plate 32c. The posture of the guide 21 can be easily switched to the weeding operation posture A or the storage posture B. The operation lever 24 is attached to the machine frame via an operation lever bracket (not shown), and can be operated in the front-rear direction of the traveling machine body 2 along the guide groove of the lever guide.

  Further, the connecting plate 23b of the swing link 23 that is integrally screwed to the mounting plate 32b of the rotating arm 32 is in a state in which the bolts 33 and 33, which are screwing means, and the nuts 34 and 34 are slightly loosened. The base plate side positioning hole H2 (bolt 33) of the connecting plate 23b is used as a rotation fulcrum P (see FIG. 5), and the swing link 23 is within the range allowed by the height position adjusting hole (long hole) H3 on the distal end side. Can be moved up and down.

  That is, the vertical movement of the swing link 23 described above is a height position adjustment that can easily adjust the height position of the narrow guide 21 according to the length of the uncut stem pod on the uncut ground side of the pre-processing unit 5. The mechanism R is configured, and by providing such a height position adjusting mechanism R, even if the stem length of the stems to be cut by the pre-processing unit 5 varies depending on the crop condition such as the variety or the regional condition, FIG. As shown by a two-dot chain line, the height position adjusting mechanism R can adjust the height position of the narrow guide 21 in accordance with the stem length of the stem, so that the head portion of the uncut stem stem is the traveling body 2. The conventional inconveniences such as bending of the stems and falling off of the grains caused by falling to the side and coming into contact with the pair of left and right crawler traveling devices 1L and 1R which are the machine frame and the traveling unit are eliminated.

  The state shown in FIG. 6 is a state in which the swing link 23 is moved to the lowest position in the direction of the arrow C via the above-described height position adjusting mechanism R, and the state shown in FIG. The swing link 23 is moved upmost in the direction of arrow D via the adjustment mechanism R, and thus swings freely in the front-rear direction of the traveling machine body 2 in the front part or the pre-processing part 5 of the traveling machine body 2. The swing link 23 is provided, the intermediate portion of the narrow guide 21 is supported on the swing link 23, and the narrow guide 21 is transformed into the weeding work posture A and the storage posture B via the swing link 23. A height position adjusting mechanism R capable of adjusting the height position of the narrow guide 21 is provided on the swing fulcrum side of the swing link 23, and the swing link is provided via the height position adjustment mechanism R. By moving the 23 up and down, the height position of the narrow guide 21 Since it is configured to be adjustable, when the height position of the narrow guide 21 is adjusted according to the length of the stalks to be cut by the pre-processing unit 5, the position change of the narrow guide 21 in the lateral direction, i.e., uncut stems. It is possible to adjust the height position of the narrow guide 21 while suppressing the projection of the narrow guide 21 to the heel side, and the herbicidal performance decreases with the adjustment of the height position of the narrow guide 21. Absent.

  A connecting plate 32c for connecting the pair of wires 36, 36 constituting the connecting mechanism 25 to both ends is fixed to the boss 32a of the rotating arm 32, and the operation lever 24 is swung. The connecting plate 32c rotates like a seesaw according to the reverse push-pull of the wires 36 and 36, and the swing link 23 swings integrally with the rotation of the connecting plate 32c. The posture of the guide 21 can be easily switched to the weeding operation posture A or the storage posture B. The operation lever 24 is attached to the machine frame via an operation lever bracket (not shown), and can be operated in the front-rear direction of the traveling machine body 2 along the guide groove of the lever guide.

The perspective view of a combine. The side view of the pre-processing part which abbreviate | omitted one part. The principal part top view which shows the weeding work attitude | position of a narrow guide, and a storage attitude | position. The principal part side view which shows the structure of an operation lever. The perspective view which shows the structure of a height position adjustment mechanism. The perspective view which shows the state which moved the rocking | fluctuation link to the lowest. The perspective view which shows the state which moved the rocking | fluctuation link most.

Explanation of symbols

2 Traveling machine body 5 Pre-processing section 21 Narrow guide 23 Swing link A Weeding posture B Storage posture R Height position adjustment mechanism

Claims (2)

  In the combine provided with the narrow guide (21) for weeding the uncut stem pod on the uncut ground side of the pretreatment unit (5) connected to the front portion of the traveling machine body (2), the culm length of the uncut stem pod And a height position adjusting mechanism (R) capable of adjusting the height position of the narrow guide (21) according to the combination.   A swing link (23) that swings freely in the front-rear direction of the travel aircraft body (2) is provided in the front portion or the pre-processing portion (5) of the travel aircraft body (2), and a narrow guide ( 21), and the narrow guide (21) can be transformed into a weeding work posture (A) and a retracted posture (B) via the swing link (23), and A height position adjusting mechanism (R) capable of adjusting the height position of the narrow guide (21) is provided on the swing fulcrum side of the swing link (23), and swinging is performed via the height position adjusting mechanism (R). The combine of Claim 1 comprised so that the height position of the said narrow guide (21) could be adjusted by moving a link (23) up and down.

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