JP3447575B2 - Combine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating position for holding a harvested culm from a mowing device with a transport start end of a threshing feed chain and a non-operating position retracted upward. And a supply guide capable of swinging switching is provided, and a hand-cut culm placing support is provided which can be switched between a storage position for exposing the transport start end and a cover position for covering the transport start end. The present invention relates to a combine provided with a mechanical linking mechanism for linking the hand-cuttered grain culm placing support member to a cover position in a reversible manner in accordance with switching from a position to a non-operation position. 2. Description of the Related Art In a combine of this type, a feeding guide is switched to an operating position and a hand-cuttered grain culm mounting support is switched to a retracted position, so that a transfer from a cutting device to a transport start end of a threshing feed chain is performed. The pillow handling threshing is performed by switching the supply guide to the non-operating position and switching the hand-cut culm placing support to the cover posture by enabling the cereal culm supply and performing the normal combine operation. Conventionally, in a state where the supply guide is located below the middle of the swing range, the supply guide is urged to swing to the operating position,
In the state where the supply guide is located above the middle, a spring is provided to oscillate the supply guide to the non-operation position, and the supply guide is held at the operation position and the non-operation position. [0003] However, in the prior art, the hand-cuttered grain culm mounting support is pulled from the retracted position to the cover position with the swinging switching of the supply guide from the working position to the non-working position. Since the interlocking wire constituting the mechanical linkage mechanism is provided so as to be operated, the supply guide is held at the non-operating position by the above-mentioned spring, but the hand-cut grain culm mounting support in the cover posture is downward (the storage posture side). ), The supply guide is pulled downward by the pushed hand-cuttered grain culm placing support via the interlocking wire, and the supply guide is contrary to the urging force of the spring. There was a risk of swinging switching to the working position. [0004] It is an object of the present invention to prevent an undesirably switching of the supply guide to an operative position when the hand-cut culm placing support is pushed downward. [0005] The features, functions and effects of the first invention according to claim 1 are as follows. [Features] A supply guide which is swingably switchable between an operation position where the harvesting culm from the mowing device is sandwiched by the conveyance start end of the threshing feed chain and a non-operation position retracted upward is provided. A hand-removed grain culm mounting support, which is switchable between a storage position for exposing the feeding portion and a cover position for covering the transport start end portion, and the hand-removed grain culm according to switching of the supply guide from the working position to the non-working position. A combine provided with a mechanical linking mechanism for linking the mounting support so as to switch reversibly from a storage position to a cover position, wherein the mechanical linking mechanism comprises a first fixed member. An intermediate portion of the link is swingably attached, and the first link swings between the working position and the non-working position of the supply guide over one end of the first link and the supply guide. 2 When the supply guide is located at the operation position, a straight line including the connection point of the second link to the first link and the connection point to the supply guide is located on one side of the fulcrum of the supply guide, and the supply is performed. The connection point and the fulcrum are set so that the straight line is located on the other side of the fulcrum when the guide is located at the non-operation position, and the first link of the supply guide is swung from the operation position to the non-operation position of the supply guide. An interlocking wire that pulls and switches the hand-cut cereal culm placing support from the retracted position to the cover position by swinging, and an urging means that urges the hand-cut cereal culm placing support to the retracted position are provided. On the point. According to the first aspect of the present invention, when the supply guide is swingably switched from the working position to the non-working position, the second link swings and the first link swings, so that the interlocking wire is operated. Is pulled against the urging force of the urging means, and the hand-cut grain support is switched from the retracted position to the cover position, and the supply guide is pivotally switched from the non-operative position to the active position. When the link swings in the opposite direction to the above and the first link swings in the opposite direction to the above, the interlocking wire is loosened, and the hand-cut grain culm placing support is released by the urging force of the urging means. Is switched from the cover posture to the storage posture. The second position is such that the straight line is located on one side of the fulcrum of the supply guide when the supply guide is located at the operation position, and the straight line is located on the other side of the fulcrum when the supply guide is located at the non-operation position. By setting the connection point of the link to the first link, the connection point of the second link to the supply guide, and the fulcrum, the supply guide is in the non-operation position and the hand-cut kernel support is in the cover position. In a certain state, when the hand-carved grain culm placing support is pushed downward and the interlocking wire is pulled, the first link swings, but the second link reverses as the first link swings. Swinging in the direction to apply the swinging power to the non-operating position side of the supply guide, so that the posture of the hand-cutting grain culm mounting support is switched in conjunction with the switching of the position of the supply guide, Hand mowing in cover position It is possible to prevent the supply guide from swinging from the non-working position to the working position due to the downward pushing of the culm placing support and switching from the cover posture of the hand-cut grain culm placing support to the storage posture. . Moreover, since the interlocking wire is not directly interlocked to the supply guide but is indirectly interlocked to the supply guide via the first link and the second link, the interlocking wire is arranged. The degree of freedom can be increased. [Effect] Therefore, according to the first aspect of the present invention, the hand-cuttered grain culm mounting support can be switched between the retracted position and the cover position as the supply guide is switched between the operating position and the non-operating position. However, even if the hand-cuttered grain culm placing support is unexpectedly pushed to the retracted posture side during pillow handling threshing by switching the supply guide to the non-operation position, the supply guide is pulled to the non-operation position side accordingly. This prevents switching of the hand-cuttered grain culm placing support to the storage position, and at the same time, prevents the supply guide from swinging to the operating position, and also facilitates the installation of the interlocking wire in the mechanical linkage mechanism. Now you can do it. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a combine harvester has a planted grain culm in front of a self-propelled traveling body frame 2 provided with a pair of left and right crawler traveling devices 1. A harvesting device 3 for harvesting and changing the posture to the sideways posture and transporting the same rearward is connected to the traveling machine frame 2 so that the harvesting culm sent from the harvesting device 3 can be transported to the traveling machine frame 2 at the transport start end of the threshing feed chain 4. A threshing device 5 that receives the data at the unit 4A and carries out the threshing process while transporting it in the rearwardly lying posture, and a boarding operation unit 6 are mounted. As shown in detail in FIG. 2, the cutting device 3 is provided with a weeding tool 7 for weeding the planted cereal culm, and a raising device 8 for causing the planted cereal culm to be weeded. Raised ring 9 for raising the raised cereal stems backward at the base of the stock, and auxiliary transport belt 1 for locking and transporting the raised end of the cereal stems rearward.
0, a clipper-type cutting device 11 for cutting the raised grain culm conveyed rearward at the base, and a pinch for nipping and transporting the root of the cut harvested cereal stem with the rail 12a. The transport chain 12, the inherited transport chain 13 which clamps and transports the root side of the grain culm conveyed by the rail 13a to the transport start end 4A of the threshing feed chain 4, and locks the tip side of the harvested grain culm. And a tip transport chain 14 that transports rearward while falling down to a sideways posture. The threshing feed chain 4 is arranged in such a manner that the transport start end 4A projects forward from the grain stem inlet 5a of the threshing device 5. As shown in FIGS. 3 and 4, the threshing device 5 presses the grain culm from the transfer chain 13 onto the transfer surface a of the transfer start end 4A of the threshing feed chain 4 to thereby start the transfer start end. A fixed portion 5A to which a supply guide 15 for enabling the nipping and transporting of the grain stem by 4A is attached.
Are connected. The supply guide 15 includes a fixing portion 5A.
A support arm 15A attached to the first left-right axis P1 (fulcrum) so as to be swingable up and down, and a guide body 15B attached to the support arm 15A. On the transfer surface a.
And the non-operating position retracted upward in the standing posture. A support arm 1 is provided between the support arm 15A and the fixed portion 5A.
When 5A is below the set vertical position, the support arm 15A
Is held in the operating position by oscillating downwardly, and a spring 17 for holding the position, which urges the supporting arm 15A to the non-operating position when the position is above the set vertical position, is stretched. Have been. A guide body 15B is attached to the support arm 15A.
The upper end of the stay 18 fixed to a position near the front of the guide body 15B is attached to the support arm 15A so as to be vertically swingable around the second left-right axis P2, and is attached to a position near the rear of the guide body 15B. Third left-right axis P
The support rod 19 pivotally connected around the third support arm 15A is pivotally supported around the second left-right axis P2 with respect to the support arm 15A of the guide body 15B.
And a holding spring 20 that urges the guide body 15B to swing downward in a direction in which the rear end swings downward with respect to the support arm 15A using the support rod 19 as a guide. Reference numeral 21 denotes a support rod 19
This is a retaining member for retaining against 5A. That is,
The guide body 15B is elastically pressed against the transfer surface a by the position holding spring 17 and the holding spring 20 at the operation position, and elastically holds the grain stalk with the transfer start end 4A. As shown in FIGS. 3 to 5, the threshing apparatus 5 has a transport start end 4A of the threshing feed chain 4.
Is retracted below the transfer surface a so that the transfer operation is performed, and the storage position where the transfer start end 4A is exposed, and the transfer is performed in a state where the transfer start end 4A projects above the transfer surface a so that the transfer operation is not performed. A hand-cuttered grain culm mounting support (hereinafter simply referred to as a support) 22 is attached which can be switched to a cover position in which the hand-cooked grain culm is placed so as to cover the starting end 4A. Means for attaching the support 22 to the threshing device 5 includes:
The support 22 is attached to the tip so as to be swingable around the fourth left-right axis P4, and swings up and down around the fifth left-right axis P5 to position the support 22 at the storage position and the cover position. The operation lever 25 to be changed is attached to the threshing device 5,
The operating lever 25 is engaged with the long hole 51 formed in the threshing device 5.
The support 22 is provided with a pin 52 for regulating the posture of the support 22 when the support 22 is vertically swung due to the swing of the support 22, and the support 22 can be freely switched between the retracted posture and the cover posture by the swing of the operation lever 25. It is a means to support. The support 22 is composed of a pair of left and right support plates 22A located on both left and right sides of the transport start end 4A. By swinging to the cover position, the grain stalk is prevented from contacting the transport surface a. The hand-cut culm is placed and supported with the culm raised. In the combine, as shown in FIGS. 3 and 4, as the supply guide 15 is switched from the operating position to the non-operating position, the support 22 is switched from the storage position to the cover position, and And a mechanical linkage mechanism A for linking the supply guide 15 and the support 22 so that the support 22 switches from the cover position to the storage position when the supply guide 15 is switched from the non-operation position to the operation position. ing. The mechanical linking mechanism A has an intermediate portion of the first link 23 attached to the fixed portion 5A so as to be swingable around a sixth left-right axis P6, and one end of the first link 23 and the support arm 15A. A second link 24 that swings the first link 23 in accordance with the swing between the working position and the non-working position of the supply guide 15 is erected, and the second link 24 is moved when the supply guide 15 is located at the working position. First link 23 of link 24
When the straight line L including the first connection point a to the supply guide 15 and the second connection point b to the supply guide 15 is located below the fulcrum P1 of the supply guide 15, and the supply guide 15 is located at the non-operating position. The connection points a and b and the fulcrum P1 are set such that the straight line L is located above the fulcrum P1, and the first position accompanying the swing of the supply guide 15 from the working position to the non-working position is set.
The swing of the link 23 pulls the support 22 from the retracted position to the cover position, and swings the first link 23 in the opposite direction to that described above with the swing of the supply guide 15 from the non-operating position to the operating position. An interlocking wire 26 utilizing a release wire is interposed between the other end of the first link 23 and the operation lever 25, and acts on the operation lever 25 to urge the support 22 to the retracted position. A helical spring 27 as a biasing means is provided. The means for connecting the second link 24 to the first link 23 and the support arm 15A is a pin connection means, and the pin hole 28 of the second arm 24 forming the second connection point b is formed by the support arm 15A. Support arm 15 in the working position
A vertical hole within the setting range of A is formed in a long hole that does not transmit to the second link 24, and prevents the vertical swing of the support 22 due to the vertical swing of the supply guide 15 accompanying the fluctuation of the grain stem volume. It has become. Also, in the second link 24,
An arc-shaped long hole 31 is formed for engaging the fulcrum shaft 30 of the support arm 15A in a state where the swing of the second link 24 accompanying the swing between the working position and the non-working position of the support arm 15A is allowed. Since the fulcrum shaft 30 is engaged at one end of the elongated hole 31 to prevent the swing of the second link 24, the support arm 15A is prevented from swinging beyond the inoperative position. ing. Therefore, when the mechanical link mechanism A is used, the interlocking wire 26 is pulled by the swing of the supply guide 15 from the operation position to the swing intermediate position, and the support member 22 is rotated.
Is switched from the storage position to the cover position, and when the supply guide 15 swings from the non-working position to the working position, the interlocking wire 26 is pulled up to the swinging middle position, but the working position exceeds the swinging middle position. The support 22 is switched from the cover position to the retracted position by the urging force due to the slack operation caused by the swinging of the support 22. On the other hand, when the support body 22 itself is operated to switch from the storage position to the cover position, although the interlocking wire 26 is pulled, the supply guide 15 is pressed against the transfer surface a and swings further downward. Cannot be switched, and the support 22
If the user attempts to switch the cover attitude from the cover attitude to the storage attitude by manipulating the same, the supply guide 15 is pulled by the interlocking wire 26 so as to press the supply guide 15 toward the non-operating position, so that the switching cannot be performed. In other words, the operation of the support 22 itself to switch from the cover position to the storage position is prevented, while the supply guide 15 is held in the non-operation position and the supply guide 15 is swung to the operation position. Switching is prevented. [Another Embodiment] The urging means 27 may be a weight-based urging means.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a main part of a combine. FIG. 2 is a schematic plan view of a reaper. FIG. 3 is a side view of a main part in a state where a supply guide is located at an operation position. Side view of the main part with the supply guide positioned at the non-operating position [FIG. 5] Front view in vertical section of the support [Description of reference numerals] 3 Cutting device 4 Threshing feed chain 4A Transport start end 5A Fixed portion 15 Supply guide Reference numeral 22: Hand-cut culm placing support 23 First link 24 Second link 26 Interlocking wire 27 Biasing means A Mechanical linking mechanism a Connection point b Connection point L Straight line

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-23755 (JP, A) JP-A-8-298844 (JP, A) JP-A-8-242668 (JP, A) JP-A-10-108 4765 (JP, A) Japanese Utility Model Showa 57-115854 (JP, U) Japanese Utility Model Showa 57-47146 (JP, U) Japanese Utility Model Showa 58-150924 (JP, U) (58) Field surveyed (Int. ⁷ , DB name) A01F 12/10

Claims (1)

(57) [Claims 1] A swing start switchable between an operation position where the threshing feed chain is conveyed and a non-operation position where the cutting culm from the cutting device is nipped with the transport start end of the threshing feed chain. Providing a supply guide, providing a hand-cut grain culm mounting support that can be switched between a storage position that exposes the transfer start end and a cover position that covers the transfer start end, from the working position of the supply guide to the non-working position A combine provided with a mechanical linking mechanism for linking the hand-carved grain culm mounting support so as to reversibly switch from the retracted position to the cover position with the switching, comprising the mechanical linking mechanism. To this end, the intermediate portion of the first link is swingably attached to the fixed portion, and extends between one end of the first link and the supply guide along with the swing between the working position and the non-working position of the supply guide. The first link A second link to be moved is erected, and when the supply guide is located at the operation position, a straight line including a connection point of the second link to the first link and a connection point to the supply guide is located on one side of the fulcrum of the supply guide. The connection point and the fulcrum are set such that the straight line is located on the other side of the fulcrum when the supply guide is located at the non-operation position while the supply guide is at the non-operation position. An interlocking wire for pulling and switching the hand-cut kernel support from the retracted position to the cover position by swinging the first link, and biasing means for operating the hand-cut kernel support to the retracted position; Combine that is provided.