JP2006166859A - Narrow guide operation structure for combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a narrow guide operation structure that can surely switch between a working posture and a storing posture and can hold the working posture of the narrow guide by using a holding force changing means. <P>SOLUTION: The combine harvester in which the narrow guide 2 dividing and guiding standing cereal culms to the uncut area side of the reaping part 3 is made switchable between the working posture that projects toward the machine body side and the storing posture that is drawn to the machine body side with the operation lever 15 provided on the operation part 6 side is further equipped with a posture-holding means 60 for maintaining the working posture and the storing posture of the narrow guide 2 and a holding force changing means for changing the narrow guide-holding power of the posture-holding means 60. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a combine narrow guide operating structure.

  Conventionally, a narrow guide installed on the uncut ground side of a combine having a working unit such as a mowing unit and a threshing unit and a control unit is operated by operating a narrow guide operating lever provided on the control unit side. As shown in Patent Document 1, a narrow guide operation structure that is configured to be switchable between a working posture that protrudes toward the weed and guides the planted cereal to a weed and a retracted posture that is drawn toward the machine body is already known.

In this narrow guide operation structure, a narrow guide operation lever pivotally supported on a support body (lever guide) and a narrow guide provided rotatably on the cutting part side are connected to one operation cable remotely. It is connected as a member. When the narrow guide operation lever is operated from the retracted posture position to the working posture position, the narrow guide is released from holding posture and brought into the working posture by its own weight. In addition, the posture switching from the working posture to the retracted posture is performed against the dead weight of the narrow guide via the operation cable by operating the narrow guide operation lever from the working posture position to the retracted posture position.
JP 2003-153629 A

In the narrow guide operation structure of the above-mentioned Patent Document 1, when the narrow guide operation lever is operated from the retracted posture position to the working posture position, the narrow guide is released from holding posture and rotated in the overhanging direction by its own weight. There is a drawback that quick switching is difficult.
In addition, when working on planted cereals that are wet with rain or dew (hereinafter referred to as wet cereals) or markedly overlaid (hereinafter referred to as lodging cereals), the narrow guide in the working position is wet grain. It is pressed by strong weeding resistance such as cocoons and overgrown cereals, and may be switched to the retracted posture side unexpectedly, making it difficult to smoothly guide the weeding thereafter.

  In order to solve the above problems, a narrow guide operating structure for a combine according to the present invention includes, firstly, a traveling machine base 1b provided with a working unit such as a cutting unit 3 and a threshing unit 5 and a control unit 6, and the cutting unit 3 is not yet installed. A narrow guide 2 for weeding the planted cereals to the weeds is provided on the cutting ground side, and the narrow guide 2 and the narrow guide operating lever 15 provided on the control unit 6 side are connected via a remote connecting member 54, and the narrow guide is provided. In the combine 1 configured to be switchable between a working posture in which the narrow guide 2 is extended to the side of the machine body and a retracted position in which the narrow guide 2 is pulled toward the machine body by the operation of the operation lever 15, the working posture and the stored attitude of the narrow guide 2 are maintained. The posture holding means 60 is provided, and the holding force changing means for changing the narrow guide holding force of the posture holding means 60 is provided.

  Secondly, the posture holding means 60 is constituted by friction plates 63 and 64 that press and brake the base side of the narrow guide operating lever 15, and the holding force changing means is a brake that makes the braking force of the friction plates 63 and 64 adjustable. It is characterized by comprising the operation member 67.

  Third, the posture holding means 60 is constituted by friction plates 63 and 64 that press and brake the base side of the narrow guide operation lever 15, and the holding force changing means is fixedly held in the working position by the base side of the narrow guide operation lever 15. It is characterized by being configured by a locking and holding mechanism 21 that enables it.

  As described above, according to the present invention, the posture holding means for holding the working posture and the retracted posture of the narrow guide is provided, and the holding force changing means for changing the narrow guide holding force of the posture holding means is provided. When the narrow guide operation lever is operated from the side, the narrow guide can be reliably switched between the working position and the retracted position, and when the combine harvester performs the harvesting work such as the fallen cedar with high weed resistance, The holding force of the working posture can be increased by operating the holding force changing means, and the working posture of the narrow guide can be maintained and smooth weed guidance can be performed. In addition, the holding force changing means is not operated when weeding a normal planted cereal, and the switching operation of the narrow guide operating lever can be facilitated.

  The posture holding means is constituted by a friction plate that presses and brakes the base side of the narrow guide operation lever, and the holding force changing means is constituted by a braking operation member that allows the braking force of the friction plate to be adjusted. It is possible to easily change the holding force of the narrow guide by operating the braking operation member as the holding force changing means, and to reliably hold the narrow guide posture and weeding guidance adapted to the situation of the culm Can do.

  The posture holding means is constituted by a friction plate that presses and brakes the base side of the narrow guide operating lever, and the holding force changing means is constituted by a latch holding mechanism that can hold the base side of the narrow guide operating lever in the working posture. Therefore, when the combine performs the harvesting work such as the fallen cedar with high weed resistance, the holding force can be easily increased by fixing the narrow guide operation lever with the locking and holding mechanism. The posture can be maintained and smooth weed guidance can be performed.

  An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 is a combine equipped with a narrow guide 2 and its operation structure according to the present invention, and a traveling machine stand 1b equipped with a crawler type traveling device 1a is provided with operations such as a cutting part 3 and a threshing part 5. Are arranged in the front-rear direction in the same manner as the conventional one, the control unit 6 and the glen tank 7 are arranged on the right side of the threshing unit 5 behind the reaping unit 3, and the waste cutter device 9 is provided behind the threshing unit 5. It becomes the composition.

  With this configuration, the planted cereals harvested by the reaping unit 3 are conveyed and supplied to the threshing unit 5 for threshing, and the threshed sorghum is passed through the sewage cutter device 9 and is in a cut or uncut long state. It is discharged outside the machine. Moreover, the grain threshed and sorted by the threshing unit 5 is accommodated in the Glen tank 7 and can be subjected to a series of combine operations.

The control unit 6 has a front control panel unit 11 and a side control panel unit 12 erected in an inverted L shape in plan view on the front side and the left side of the control step 10, and a driver seat 10 a is installed behind the control step 10. The configuration is
A steering lever or the like is installed in the front control panel unit 11, and a main transmission lever, a sub transmission lever, a work implement operation lever, and the like are arranged in the front-rear direction on the side control panel unit 12.

Further, on the left side wall of the side control panel 12, a cutter cutter groove 16 and a narrow guide control lever for operating and guiding the reject cutter lever (rejection transfer switching lever) 13 and the narrow guide control lever 15 shown in FIG. A lever guide 19 having a groove 17 is provided.
The waste cutter lever 13 is configured to selectively switch a transport switching member (not shown) installed in the transport path of the waste cutter device 9 between a non-cutting position and a cutting position by an operation in the front-rear direction. As a result, the cutter lever groove 16 can discharge the waste in an uncut long position at the front operation position, and supply the waste to the waste cutter device 9 at the rear operation position to cut and discharge the waste. Can do.

When the narrow guide operation lever 15 is operated in the front-rear direction along the narrow guide operation lever groove 17, the narrow guide 2 can be brought into the retracted position at the front retracted position via the narrow guide switching mechanism 20 described later. It is possible to switch to the work posture at the rear work posture position.
Further, the lever guide 19 is provided with a locking and holding mechanism 21 for selectively locking and positioning the narrow guide operating lever 15 in the working posture position to change the holding force of the narrow guide 2 and holding force changing means. Is configured. That is, the locking holding mechanism 21 as the holding force changing means shown in FIG. 4 is configured to lock the hook-shaped locking piece 23 on the support shaft 22 provided on the rear side of the narrow guide operation lever groove 17 by an operation described later. It is configured to be able to switch and rotate between a position and a non-locking position.

The mowing unit 3 supports the rear end of the mowing unit frame 25 on a column 26 standing on the front side of the traveling machine base 1b so as to be rotatable by a lateral support shaft 27, and the middle part of the mowing unit frame 25 is a traveling machine. It is supported by the hydraulic cylinder 29 from the base 1b side so as to be movable up and down.
In addition, the cutting part 3 is provided with a weeding body 31 and a grain raising body 32 in a front-rear direction on a weeding frame 30 that extends a plurality of front sides from the cutting part frame 25, and is planted by the weeding body 31. The cereal is raised by the cereal erection body 32, and the cereal that has been cut by the cutting blade is conveyed toward the threshing unit 5.

Next, the narrow guide 2 and the narrow guide switching mechanism 20 will be described. As shown in FIGS. 1, 2, and 3, the narrow guide 2 is installed on the left side of the machine body on the grain uncut ground side so as to be switchable between a storage posture and a guide posture by a support structure similar to the conventional one. .
In other words, the narrow guide 2 is attached and supported at the front end portion by the rotation support portion 35 provided at the lower portion of the weed body 31 of the weed frame 30, and the rear end portion is configured as the attachment member 36 of the cutting portion frame 25. The support arm 37 of the guide switching mechanism 20 is supported so that the posture can be changed.

  In the illustrated narrow guide 2, an auxiliary narrow guide 2 a that is loosely supported by the support portion 40 on the traveling machine base 1 b side is connected to a joint portion 39 provided at the rear end portion. Since this auxiliary narrow guide 2a is driven by the operation of the narrow guide 2 with the support portion 40 as a fulcrum, the posture change of the narrow guide 2 is not hindered. Moreover, the guidance of the cereal culm guided by the narrow guide 2 is taken over, and the cereal spear tip side is guided away from the aircraft.

  As shown in FIG. 5, the narrow guide switching mechanism 20 pivotally supports the central portion of the switching piece 51 provided on the base end side of the support arm 37 on the support shaft 50 erected on the mounting member 36. In addition, the left and right sides of the switching piece 51 are connected to both sides of the proximal end portion of the narrow guide operating lever 15 by a remote connecting member 54 including a storage wire 52 and an extension wire 53.

  The support arm 37 has a hook portion 55 provided at the tip thereof slidably inserted into a narrow guide support portion 56 formed along the narrow guide 2. As a result, when the support arm 37 is rotated about the support shaft 50 via the storage wire 52 and the overhanging wire 53 by the operation of the narrow guide operation lever 15, the hook portion 55 is pushed while sliding the narrow guide support portion 56. The pulling operation is performed, and the posture of the narrow guide 2 can be changed smoothly.

Next, the support structure of the narrow guide operation lever 15 will be described with reference to FIG. A friction holding mechanism 60 having friction plates 63 and 64 is fitted into the middle end of the narrow guide operating lever 15 in the middle of a screw rod 59 projecting from a mounting bracket 57 mounted and supported inside the lever guide 19. Is attached and supported so as to be able to perform a braking operation, and constitutes a posture holding means described later.
The screw rod 59 is inserted and supported on the outside of the friction plates 63 and 64 by inserting a support piece 62 that is loosely supported by a support pin 61 protruding from the mounting bracket 57.

The friction holding mechanism 60 as the posture holding means is fitted between the mounting bracket 57 and the support piece 62 by a screw rod 59 and is disposed on both sides of the narrow guide operating lever 15. A braking operation member as a holding force changing means formed with a disc spring 65 and a washer 66 fitted into the screw rod 59 on the outside of the piece 62 and a female screw screwed into a screw portion formed at the tip of the screw rod 59. 67 mag.
Although the braking operation member 67 of the illustrated example has a grip operation part on the outer peripheral surface and has a nut structure that can be easily gripped and operated from the control part 6 side, the operation part can also be a lever shape.

  According to this configuration, when the braking operation member 67 is rotated in the tightening direction, the support piece 62 is elastically pushed by the disc spring 65 via the washer 66, and the narrowing between the mounting bracket 57 and the support piece 62 is performed. The base portion of the guide operation lever 15 can be pressed and held with a predetermined braking force by the friction plates 63 and 64 and positioned and held. Therefore, the holding force changing means increases the holding force when the brake operation member 67 is tightened largely when the narrow guide operating lever 15 is in the working posture position, and moves the narrow guide 2 toward the retracted posture (posture change). It is possible to maintain a working posture that prevents the above.

  The combine 1 having the narrow guide operation structure configured as described above has the friction plates 63 and 64 regardless of whether the narrow guide operation lever 15 is operated to the retracted position or the working position of the narrow guide operation lever groove 17. Can brake and hold the narrow guide operating lever 15. Therefore, even if the narrow guide 2 tries to change its posture due to traveling vibration or its own weight accompanying the combine work, the operation posture of the narrow guide 2 can be maintained.

  Further, the narrow guide 2 in the working posture is pressed toward the retracted posture by the weed resistance of the cereal and the posture is changed. At this time, the braking operation member 67 of the friction holding mechanism 60 is operated to increase the braking force. By adjusting, the narrow guide 2 can be kept in a proper working posture, and the weeding of the cereal can be satisfactorily performed and the cutting operation can be performed smoothly.

  Furthermore, when the combine 1 performs a cutting operation such as a grain pod wetted by rain or dew or a fallen culm that is significantly overlaid, unlike the normal cereal culm cutting operation, the narrow guide 2 in the working posture is The narrow guide operation lever 15 is pushed to the retracted position side by the strong weeding resistance of the wet cereal and the overgrown cereal, the narrow guide operating lever 15 changes the lever position due to slippage due to insufficient braking of the friction holding mechanism 60, and the narrow guide 2 is inadvertently retracted. Rotate to the side and try to change posture.

  However, in such a case, the operator determines the state of the cereal and operates the locking holding mechanism 21 to engage the locking piece 23 with respect to the narrow guide operating lever 15 in the working posture position, thereby increasing the holding force. Therefore, the narrow guide operating lever 15 can be reliably positioned and held by the locking piece 23 even if a strong pressing force is applied to the narrow guide 2.

  Therefore, the narrow guide 2 is always maintained in the working posture, and the weed guidance of the wet cereal and the inverted cereal can be performed smoothly. Further, the engaging piece 23 can be disengaged by rotating outwardly about the support shaft 22, so that the narrow guide operating lever 15 is switched to the retracted posture position and the narrow guide 2 is easily stored. Can return to posture.

  Further, the narrow guide 2 is fixed and held at the time of guiding the weeds such as fallen cereals without depending on the braking force by the friction plates 63 and 64 of the friction holding mechanism 60 and the narrow guide operating lever 15 is moved by the locking and holding mechanism 21. Since the working posture is fixed, the braking force of the friction holding mechanism 60 can be set to a holding force of a working posture that is sufficient to guide the weed cereals to weed, so that the narrow guide operation lever 15 is controlled by the braking force. The lever operation can be performed lightly and easily without increasing the operation load.

  Next, another embodiment of the locking and holding mechanism 21 will be described with reference to FIG. In addition, description is abbreviate | omitted about the structure and effect | action similar to the thing of the said embodiment. The narrow guide operation lever groove 17 in the illustrated example is formed in a substantially U shape in plan view, and the narrow guide operation lever 15 is displaced from the front storage posture position to the left and right to be operated alternatively to the rear storage posture position. The bifurcated guide grooves 17a and 17b are possible. In addition, the left guide groove 17a is provided with an engagement portion 69 as an engagement holding mechanism 21 that engages the narrow guide operation lever 15 at the working posture position.

According to this, when performing the cutting operation of the standing cereal mash, the operation using the guide groove 17b having the same configuration as that of the above-described embodiment is performed, and the reaping operation of the wet cereal and the overlaid culm is performed. In some cases, an operation using the guide groove 17a can be performed alternatively.
Accordingly, the narrow guide operating lever 15 can be operated to the working posture position in the guide groove 17a and can be easily positioned and locked to the engaging portion 69, so that the working posture of the narrow guide 2 can be reliably held. The operation of switching the narrow guide 2 to the retracted position can be performed by a simple operation and configuration in which the narrow guide operation lever 15 is displaced laterally and removed from the engaging portion 69.

It is a whole side view of a combine provided with the narrow guide operation structure of this invention. It is a top view which shows the state which made the narrow guide of FIG. 1 the retracted position. It is a top view which shows the state which made the narrow guide of FIG. 1 the working posture. It is a perspective view which shows the structure of a lever guide. It is a structural diagram of the main part showing a narrow guide operation structure. It is a structural diagram showing a friction holding mechanism of a narrow guide operation lever. It is a perspective view which shows another embodiment of a lever guide.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 1b Traveling machine stand 2 Narrow guide 3 Cutting part 5 Threshing part 6 Steering part 15 Narrow guide operation lever 17 Narrow guide operation lever groove | channel 19 Lever guide 20 Narrow guide switching mechanism 21 Locking holding mechanism (holding force change means) 37 Support Arm 54 Remote connection member 60 Friction holding mechanism (posture holding means)
63, 64 Friction plate 67 Braking operation member (holding force changing means)

Claims (3)

  The traveling machine stand (1b) is provided with working parts such as a cutting part (3) and a threshing part (5) and a control part (6), and the planted cereal is guided to the uncut area of the cutting part (3). The narrow guide (2) is connected, and the narrow guide (2) and the narrow guide operating lever (15) provided on the control unit (6) side are connected via a remote connecting member (54). In the combine (1) configured to be switchable between a working position in which the narrow guide (2) is extended to the side of the machine body and a retracted position in which the narrow guide (2) is drawn to the machine side by the operation of (15), the working position of the narrow guide (2) And a narrow guide operation structure for a combine provided with a posture holding means (60) for holding the storage posture and a holding force changing means for changing the narrow guide holding force of the posture holding means (60).   The posture holding means (60) is constituted by friction plates (63), (64) that press and brake the base side of the narrow guide operating lever (15), and the holding force changing means is the friction plates (63), (64). 2. The narrow guide operation structure for a combine according to claim 1, wherein the structure is constituted by a brake operation member (67) which makes the brake force adjustable. The posture holding means (60) is constituted by friction plates (63), (64) that press and brake the base side of the narrow guide operating lever (15), and the holding force changing means is the base side of the narrow guide operating lever (15). The narrow guide operation structure of the combine according to claim 1 or 2, wherein the holding mechanism (21) is configured to be able to fix and hold the machine in a working posture.

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