JP2013243941A - Ladder structure of general purpose combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ladder-setting structure of a general purpose combine harvester, which can be used as an index for recognizing the rear portion width of a machine frame on the work of the combine harvester or on the storage of the machine frame to facilitate the control of the combine harvester, and in which the working posture of the ladder can be switched to efficiently perform a maintenance work in response to a required maintenance site.SOLUTION: A ladder-setting structure 1 of a general purpose combine harvester, in which a ladder 25 is vertically set to a space portion S formed between the front side machine wall of a threshing portion 7 and a feeder house 20, is characterized in that the ladder 25 is arranged in the space portion S in a state that the front side longitudinal frame 25a is close to the feeder house 20 and in a state that the rear side longitudinal frame 25a is close to the outside of the front side machine wall, in a state inclined to the longitudinal direction of the space portion S, and the rear side longitudinal frame 25a is arranged in the rear portion of the threshing portion 7 on the approximately same line as the machine body rear portion projection end R of a discharged straw-treating device 6 projected on the outside of the machine frame on the plane view.

Description

  The present invention relates to a ladder structure for a general purpose combiner.

2. Description of the Related Art Conventionally, a reaping part that conveys the harvested cereals backward via a feeder house of the conveying part, and a thresholder type threshing part that threshs the cereals supplied from the feeder house, the front side wall of the threshing part A ladder is erected in a corner-shaped space formed between the feeder house and the feeder house, and the ladder is used to go up to the feeder house and threshing section to perform maintenance work such as inspection, repair, and cleaning of necessary parts. The general-purpose combine made is already known (see, for example, Patent Document 1).
The above-described combine ladder installation structure is configured by placing the rear vertical frame closer to the outside of the front machine wall with the front vertical frame close to the feeder house and the ladder installed in the space. It is installed in an inclined shape in plan view with respect to the front-rear direction of the part.

JP 2006-25696 A

  In the ladder installation structure shown in Patent Document 1, the vertical frame on the front side of the ladder is placed close to the feeder house, and the vertical frame on the rear side is disposed closer to the outside of the front machine wall. Although it is installed in a slanted manner with respect to the front-rear direction, the vertical frame on the rear side is mounted so as to protrude greatly outside the machine body of the threshing part, so the vertical frame can easily collide with other objects while traveling And other things may be damaged. In addition, there is a disadvantage that the tip of the planted cereal is brought into contact with a ladder that protrudes in the middle of the outside of the machine and is torn off. In particular, when storing the aircraft in a narrow place such as a barn by reverse travel, the operator controls the aircraft while visually observing the width of the combine body on the outside of the aircraft on the left rear side from the control unit arranged on the right side. However, in this case, it is easy to overlook the vertical frame of the ladder projecting in the middle of the outer side of the machine body, so that it is necessary to redo the combine storage work.

In order to solve the above-mentioned problems, the present invention firstly provides a cutting unit 9 for conveying a crop to be planted rearward to a machine frame 2 having a traveling device 2a via a feeder house 20 of the cutting and conveying unit 10, and the feeder. The thresholder type threshing unit 7 for threshing the crop supplied from the house 20 is mounted, and a ladder 25 is erected in a space S formed between the front machine wall 7f of the threshing unit 7 and the feeder house 20. Then, in the ladder installation structure 1 of the general-purpose combine that is configured to climb up to the feeder house 20 and the threshing unit 7 using the ladder 25,
In the space S, the ladder 25 is brought close to the outside of the front machine wall 7f with the rear vertical frame 25a in the state where the vertical frame 25a on the front side of the ladder 25 is brought close to the feeder house 20, The rear part of the body of the waste treatment apparatus 6 that is disposed in an inclined manner with respect to the front-rear direction of the space part S, and that has a rear vertical frame 25a in a plan view and that is installed at the rear part of the threshing part 7 and protrudes outward from the body. It is characterized by being arranged on the substantially same line as the protruding end R.
Secondly, the ladder 25 is attached to the rear vertical frame 25a to the outside of the front machine wall 7f so as to be rotatable about the vertical axis by the rotation attachment means 26, and the front vertical frame 25a is switched to the machine body side. By fixing the fixing means 27 so as to be unreleasable, the rotation attaching means 26 is released from the front ladder working posture where the ladder 25 faces the space S, and the rotation attaching means 26 is turned around the fulcrum. The front vertical frame 25a is configured to be freely switchable and fixed to a rear ladder working posture along the outside of the threshing unit 7.

According to the ladder installation structure of the general-purpose combiner according to the invention of claim 1, a state in which the vertical frame on the front side is brought close to the feeder house in the space formed between the front machine wall of the threshing part and the feeder house. Thus, by placing the rear vertical frame closer to the outside of the front machine wall, the rear vertical frame is arranged in an inclined manner with respect to the front-rear direction of the space portion, and the rear vertical frame is arranged at the rear portion of the threshing portion in plan view. When the planted cedar with a long culm length is cut, it is arranged in the front-rear direction by arranging it so that it is arranged almost on the same line as the largest outer projecting part of the sewage treatment device that is installed and projects outward. Even if the tip side comes into contact with a ladder that is arranged in a slanted shape and does not project the rear vertical frame to the outside of the aircraft, the strong contact with the vertical frame can be avoided to prevent the tip from being caught. it can. The rear vertical frame of the ladder is installed on the rear part of the threshing part, and the maximum outer protrusion of the slagging treatment device that protrudes outward from the fuselage is arranged on substantially the same line. It becomes an index to recognize, and it can be made easier to maneuver during combine work or when storing the aircraft.
According to the second aspect of the invention, the ladder is attached to the rear vertical frame to the outside of the front machine wall so as to be rotatable about the vertical axis by the rotation attaching means, and the front vertical frame is switched to the machine body side. By attaching the fixing means so as to be unreleasable, the fixing of the rotating mounting means is released from the front ladder working posture in which the ladder faces the space, the rotating mounting means is reversed and rotated around the fulcrum, and the front vertical frame is moved. The ladder arranged in a slanting manner with respect to the front-rear direction in the space part can be easily fixed by switching to the rear ladder work posture along the outside of the threshing part, so that the maintenance work of the threshing part performed from the front part of the machine body is easy In addition to being able to transfer to the upper part of the feeder house, it is possible to check, repair, and clean the internal conveyor etc. It can be carried out. Also, when the operator wants to perform maintenance work on the upper rear side of the threshing part without going up to the feeder house, the front fixing member is released, and the rotating attachment means is turned around the fulcrum to rotate the front side vertically. Since the ladder can be easily installed from the front ladder working posture to the rear ladder working posture along the outside of the rear threshing part when the frame is fixed to match the fixing member of the rear switching fixing means, from here The worker can use the ladder from here to perform maintenance work while maintaining a stable posture. Therefore, the maintenance work according to the required maintenance location can be efficiently performed by switching the work posture of the ladder.

It is a side view of a general purpose combine. It is a top view of FIG. It is a perspective view which shows the front side ladder working attitude | position of a ladder installation structure. It is a perspective view which shows the rear side ladder working attitude | position of a ladder installation structure. It is a disassembled perspective view which shows the structure of the rotation attachment means and switching fixing means of a ladder installation structure.

  Embodiments of the present invention will be described with reference to the drawings. 1 and 2, symbol A is a general-purpose combine equipped with a ladder installation structure 1 according to the present invention, and this combine A is located at the right front position of a body frame 2 equipped with a pair of left and right crawler type traveling devices 2a. A steering unit 3 covered with the cabin 3a, a motor unit 4 on which an engine is mounted, and a grain storage unit 5 including a grain discharge auger device 5a are arranged in the front-rear direction. Further, at the left side position of the machine body frame 2, a thresholder type threshing unit 7 including a chopper type sewage treatment device 6 is disposed at the rear, and a reaping unit 9 and a conveying unit 10 are disposed in front of the threshing unit 7. Etc. are installed so that they can be raised and lowered to adjust the cutting height of the crop.

  As a result, during the combine operation, the combine A cuts the crops to be planted in the field by the reaping unit 9, transports the harvested crops to the threshing unit 7 through the transport unit 10, and the grains that have been threshed and sorted by the threshing unit 7 ( Fine grain) is supplied to the grain storage unit 5 and stored. The swarf discharged from the threshing unit 7 is discharged rearward in a state of being crushed by the slaughter processing device 6. And when this combine A requires inspection, repair, cleaning, etc. of the inside of the conveyance part 10 or the handling room of the threshing part 7, etc., maintenance work is utilized by utilizing the ladder 25 by the ladder installation structure 1 mentioned later. We are trying to do it efficiently.

  The configuration of each part of the combine A will be described. The cutting unit 9 has a pair of right and left weed bodies 12 attached to the front end of the platform 11, a cutting blade 13 is provided at a rear position between the weed bodies 12, 12, and a platform auger 14 is provided at a rear position of the cutting blade 13. A base end of a pair of left and right reel support arms 15 is attached to the upper rear end of the platform 11, and a scraping reel 16 as a harvester reel is rotatably supported between the reel support arms 15. Also, behind the left weed body 12 on the uncut ground side of the planted cereal culm, a narrow guide 12a is planted by projecting toward the outer side of the machine body in a retracted position close to the machine body side by a known configuration. It is provided so that it can be switched to a working posture in which it is tilted and guided while pushing the standing cedar.

  The scraping reel 16 is provided with a tine mounting bar 19 having a plurality of tines 18 between the left and right reel outer frames 17 and 17 with a pitching interval in the circumferential direction, and rotates in a downward arrow direction. By being driven, the planted cereal can be scraped into the platform 11. Further, the crop (grain stalk) that has been scraped by the reel 16 and harvested by the cutting blade 13 is gathered from the platform auger 14 to the transport unit 10 and transported to the threshing unit 7 for threshing selection work.

  The transport unit 10 attaches a feeder house 20 that has a rectangular cross section and extends in the front-rear direction to the front end of the machine body frame 2 so as to be rotatable up and down, and feeds the cereals backward into the feeder house 20. It has a conveyor (not shown). As shown in FIGS. 3 and 4, the feeder house 20 has a plurality of cover lids 21a attached to the upper wall portion 21 thereof so as to be openable and closable, and perform maintenance work such as inspection, cleaning, and repairing of the conveyor. To be able to.

  The threshing unit 7 forms a handling chamber (not shown) in which the handling cylinder is pivotally supported in the front-rear direction at a position immediately after the conveying unit 10, and the threshing including the grains threshed by the handling chamber is shaken downward. While falling to the dynamic sorting section, the waste is transferred to the rear waste treatment device 6. Further, the threshing unit 7 is provided with an upper cover 7a covering the upper part of the handling room and a side wall cover 7c covering the left side wall 7b and the transmission mechanism installed outside thereof, so that maintenance work in various places can be easily performed. To be able to do. And the combine A of the example of illustration makes the left side of the body main body body width of the combine main body body width the position of the said side wall cover 7c. Moreover, the transmission part cover 22 which covers a threshing input transmission mechanism (not shown) etc. is attached to the front part of the front side machine wall 7f which comprises the threshing frame of the threshing part 7 so that attachment or detachment is possible.

  The waste treatment apparatus 6 is installed at the rear part of the threshing part 7, and a treatment main body part 6a that internally houses a waste treatment body that projects a plurality of crushing teeth (not shown) and rotates horizontally. And a waste disposal device cover 6b attached to the rear portion of the processing body 6a. As a result, the waste discharged from the threshing unit 7 is crushed by the waste processing body of the processing main body 6a, and the discharge guide is distributed so as to diffuse the processed waste backward via the waste processing device cover 6b. To do. The waste treatment apparatus cover 6b forms a rear part projecting end R of the machine body whose rear end projects outward from the side wall cover 7c of the threshing unit 7 to the left side of the machine body. In other words, the combine A in the illustrated example has the left side of the combiner body width of the combiner body located at the outer side position (width) of the side wall cover 7c, and the rearward projecting end R of the waste disposal device cover 6b is the combiner main body. Projecting laterally from the outside of the aircraft on the left side of the aircraft.

  Next, the ladder installation structure 1 installed in the combine A will be described in detail with reference to FIGS. In the ladder installation structure 1, the ladder 25 is configured as a rectangular ladder frame body in which front and rear vertical frames 25a having a ladder interval are connected in the vertical direction by a plurality of horizontal rods 25b. The ladder 25 is disposed in an inclined manner with respect to the front-rear direction with respect to a corner-shaped space S formed between the front machine wall 7f of the threshing unit 7 and the left side wall 20b of the feeder house 20, and is viewed in a plan view. The front ladder working posture standing upright so as to form opposite sides of the triangle and the rear ladder working posture standing up so that the ladder 25 is substantially parallel to the side wall cover 7c of the left side wall 7b. It is configured to be freely switchable and installable.

  That is, in the illustrated ladder installation structure 1, when the ladder 25 is opposed to the space S and attached obliquely in a plan view, the upper and lower sides of the vertical frame 25 a on the rear side (left side) are positioned closer to the outside of the front machine wall 7 f. In between, it is rotatably attached by means of rotational attachment means 26 having a hinge structure. And the ladder 25 is the switching fixing means 27 installed close to the left side wall 7b side of the threshing part 7 and the switching fixing means 27 installed with the lower side of the vertical frame 25a on the rear side close to the feeder house 20 side. By selectively detachably attaching to the means 27, the ladder 25 in the front ladder working posture and the rear ladder working posture is stably erected.

  At this time, the ladder 25 is rotated by means of a rotation mounting means 26 and a switching fixing means 27, which will be described later. It arrange | positions so that it may become a substantially the same position, without protruding greatly from the outer side.

  Next, the rotation mounting means 26 and the switching fixing means 27 will be described with reference to FIG. First, the rotation mounting means 26 is provided with a vertical frame 30 fixed to the left side portion of the front machine wall 7f via a bracket 29 and a vertical frame 25a which is a rear portion of the ladder 25 downward via the bracket 31. The upper and lower vertical axes 32 project from each other, and the vertical axis 32 is inserted into each corresponding vertical cylinder 30 from above to prevent it from coming off. Thereby, the ladder 25 is stably attached in a substantially vertical posture along the left front corner portion of the threshing portion 7 having the strength by joining the front machine wall 7f and the left side wall 7b by the rotation attaching means 26. The vertical ladder 32 is erected to be pivotable between a front ladder working posture and a rear ladder working posture.

  On the other hand, the switching fixing means 27 is located on the front side of the ladder 25 with respect to the fixing member 33 provided at a predetermined fixing position on the front ladder working posture side and the rear ladder working posture side from the machine body frame 2a side or the threshing unit 7 side. The vertical frame 25a is configured to be alternatively fixed by an engagement fixing means having an arbitrary structure. That is, the switching fixing means 27 in the illustrated example is attached to the auxiliary deck 35 that is laid substantially horizontally from the machine body frame 2a along the left front corner portion of the threshing portion 7 and close to the lower ends of the vertical frames 25a and 25a. On the other hand, each fixing member 33 is erected upward, and the pin hole 36 drilled in the left vertical frame 25a is selectively aligned with the pin hole 33a drilled in each fixing member 33. Thus, the fixing pin 37 is removably inserted into both holes. The auxiliary deck 35 can be used as a deck base on which a foot is placed and can be a support base that receives the load of the ladder 25.

  This ladder 25 is provided with a rear mounting frame 26a and a switching fixing unit 27. The rear vertical frame 25a is installed at the rear part of the threshing unit 7 and protrudes outward from the machine body. It is arranged so as to be substantially collinear with the end R. That is, the vertical frame 25a is erected and positioned substantially on the same line without projecting greatly from the rear end projecting end R of the body treatment unit cover 6b that protrudes to the left of the rear portion of the body and forms the maximum width of the rear portion of the body. . As a result, the combine A suppresses contact with the planted culm during the forward cutting operation performed by projecting the narrow guide 12a to the working posture, and also suppresses contact with the planted culm during the backward movement of the machine body. Further, contact with an auxiliary worker standing at a position close to the threshing unit 7 while the vehicle is running is also avoided.

  The combine A provided with the ladder installation structure 1 configured as described above performs the combine work in a state where the ladder 25 is fixed to the front ladder work posture and the narrow guide 12a is switched to the work posture protruding sideways. As a result, when the combine A moves forward, the narrow guide 12a pushes the planted culm laterally while moving the tip away from the body, so that the operation is smoothly performed without bringing the culm into contact with the body. Further, in the case of a cereal with a long culm in the combine operation as described above, the tip side may come into contact with the ladder 25 after the tilt guide by the narrow guide 12a is released. Since the rear vertical frame 25a is provided so as not to protrude largely outward from the machine body in an inclined state, the vertical frame 25a avoids a strong contact with the cereal and escapes backward. The tip is not caught by the ladder 25 and broken.

  Further, the ladder 25 has a vertical frame 25a on the rear side disposed on the same line as the rear projecting end R of the body rear part of the sewage treatment device 6 installed at the rear part of the threshing unit 7 and projecting outward from the body. Since it is an index for recognizing the rear width, the excavation processing device 6 that is difficult to visually recognize while checking the position of the vertical frame 25a from which the rear width of the airframe is easily visible from the side of the control portion 3 when traveling forward and backward. Therefore, it is possible to easily perform the operation of recognizing the rear end protruding end R of the aircraft as the maximum rear portion width of the aircraft. Further, when the aircraft moves backward in the middle of the combine work, the auxiliary operator behind the aircraft sees the rear projection end R of the aircraft rear portion of the waste disposal device cover 6b of the waste disposal device 6 which is easy to confirm and avoids contact with this. A series of combine operations can be performed smoothly without hindering the installation of the ladder 25, for example, contact with the ladder 25 can be avoided by moving to the position. Further, when the combine A is stored in a narrow place such as a barn, the operator can see from the right control unit 3 even if it is difficult to see the width of the left outer side of the left side of the aircraft. Using the rear vertical frame 25a of the ladder 25 protruding in the middle of the side as an index, the proper storage operation of the aircraft can be performed easily and efficiently.

  And when performing the maintenance work in the conveyance part 10 of the combine A, the handling room of the threshing part 7, or the transmission part cover 22, the front side ladder work posture and the rear side of the ladder 25 according to the places where each maintenance work is required. Select to fix the state with the side ladder working posture. That is, the ladder 25 in a state where it is fixed in the front ladder working posture, when an operator puts his or her feet up on the recumbent arm 25b, reaches in the middle and opens the cover lid 21a of the feeder house 20, and the threshing unit 7 The upper cover 7a can be opened by unlocking operation, and maintenance work inside each can be easily performed. Further, a fixing tool such as a bolt at a high position of the transmission portion cover 22 can be easily removed.

  The operator can easily transfer to the upper part of the feeder house 20 from the ladder 25 in which the front vertical frame 25a is close to the feeder house 20, if necessary. Thus, inspection, repair, cleaning and the like of the internal conveyor can be sufficiently performed. Furthermore, since the operator can easily move onto the threshing unit 7 using the feeder house 20, the maintenance work in the handling chamber can be sufficiently performed. At this time, since the ladder 25 is fixedly supported by the fixing member 33 of the front switching and fixing means 27, the vertical frame 25a on the front side can be moved up and down smoothly.

  Next, when an operator performs maintenance work on the upper rear side of the threshing unit 7 without going up to the feeder house 20 on the threshing unit 7, the fixing of the front fixing member 33 is released and the rotation mounting means 26 is a fulcrum. The front vertical frame 25a is fixed in alignment with the fixing member 33 of the rear switching fixing means 27. Thereby, the ladder 25 can be easily installed from the front ladder working posture to the rear ladder working posture along the outside of the threshing portion 7 behind the front machine wall 7f. Then, by using the ladder 25 in the rear ladder working posture, the worker can easily perform maintenance work by extending the upper body and hands while maintaining a stable posture.

  Therefore, since the worker can selectively switch the ladder 25 from the front ladder work posture to the rear ladder work posture according to the situation of the maintenance work required on the upper part of the threshing unit 7, the worker can dare to Without going up, it is possible to go up to the threshing section 7 directly from the ladder 25 in the rear ladder working posture, or to reach out from the ladder 25 without going up and perform maintenance work efficiently. Next, when the maintenance work for this part is completed, the combine work is continued by switching and fixing the ladder 25 to the original front ladder work posture.

A General-purpose combine 1 Ladder installation structure 2 Airframe frame 2a Traveling device 3 Steering unit 6 Shading processing device 7 Threshing unit 7f Front machine wall 9 Cutting unit 10 Transporting unit 20 Feeder house 25 Ladder 25a Vertical frame 26 Rotation mounting means 27 Switching Fixing means S Space part R Projection rear end

Claims (2)

From the feeder house (20) to the machine frame (2) provided with the traveling device (2a), the harvesting part (9) for conveying the crop to be planted rearward through the feeder house (20) of the cutting and conveying part (10). A space part (S) is mounted between the front machine wall (7f) of the threshing part (7) and the feeder house (20), which is equipped with a thresher type threshing part (7) for threshing the supplied crop. In the ladder installation structure (1) of the general-purpose combine that has a ladder (25) standing upright on the feeder house (20) and the threshing part (7) using the ladder (25),
The ladder (25) is placed in the space S, and the vertical frame (25a) on the front side of the ladder (25) is placed close to the feeder house (20), and the vertical frame (25a) on the rear side is placed on the front machine wall. (7f) by being close to the outer side, it is arranged in an inclined shape with respect to the front-rear direction of the space portion (S), and the rear vertical frame (25a) in the plan view is arranged at the rear portion of the threshing portion (7). A general-purpose combiner installation structure characterized by being arranged substantially on the same line as the rear projecting end (R) of the airframe rear part of the waste disposal device (6) that is installed on the main body and projects outward.   The ladder (25) is attached to the rear vertical frame (25a) to the outside of the front machine wall (7f) so as to be rotatable about the vertical axis by the rotation attaching means (26), and the front vertical frame (25a ) Is attached to the fuselage side by the switching and fixing means (27) so as to be unlocked and released, so that the rotation mounting means (26) is released from the front ladder work posture in which the ladder (25) faces the space (S). The rotation mounting means (26) is reversely rotated about the fulcrum, and the front vertical frame (25a) is configured to be freely switchable and fixed to a rear ladder working posture along the outside of the threshing portion (7). General-purpose combine ladder installation structure.

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