JP4297807B2 - Threshing device - Google Patents

Description

  The present invention locks an upper threshing case that pivotally supports a handling cylinder to a lower threshing case provided with a sorting portion so as to be swingable upward and to be fixed at a work position in which the upper threshing case is lowered. The mechanism is configured to be releasable by an operation tool provided in the upper threshing case, and the upper threshing case is opened upward together with the handling cylinder, so that the receiving net provided in the handling room is cleaned, detached, and below the handling room. The present invention relates to a threshing apparatus that can easily perform cleaning and the like of the sorting section.

As a threshing device having the above-described configuration, for example, as disclosed in Patent Document 1, a machine body frame portion 33 made of a square pipe is fixed to the free end side of the upper machine body 15 over the longitudinal length of the upper machine body 15. The machine body frame portion 33 is extended to the rear of the upper machine body 15, and the interlocking shaft 33 is rotatably supported along the extension portion of the body frame portion 33. A hook-like lock 23 is attached to the end, and the handle 33a is rotated by the operation of the handle 28a for operating the lock mechanism before and after the handling chamber that fixes the upper machine body 15 to the lowered work position. 28a and the interlocking shaft 33 are interlocked and connected so that the lock 23 is engaged with and disengaged from the connecting frame 31 provided at the rear of the lower fuselage 15 so as to bypass the exhaust wall passage route of the lower fuselage 15. Then, the interlocking shaft 33 is rotated by operating the locking tool 23 in the unlocking direction to disengage the locking tool 23 from the connecting frame 31, and the interlocking shaft 33 is rotated in the reverse direction by operating the locking tool 23 in the locking direction. A device configured to move and engage the locking device 23 with the connecting frame 31 has been developed and put into practical use.
JP 7-274678 A

  According to the above-described conventional structure, the upper body can be locked and unlocked at the rear of the threshing device in conjunction with the switching operation of the lock mechanism before and after the handling chamber that fixes the upper body in the working posture by the handle. The upper body can be firmly fixed to the working posture, but the upper body that swings up and down is provided with a long body frame part that is extended far behind the upper body, Since the interlocking shaft is supported along the extended portion, the weight of the upper airframe is increased. In particular, the increase in weight of the fuselage frame part and interlocking shaft on the free end side of the upper fuselage greatly affects the increase of the downward swinging moment due to the weight of the upper fuselage, and the force that lifts the upper fuselage with the handle. Was necessary. In addition, by introducing a gas spring for lifting assistance, the burden on the lifting load of the worker is reduced, but in order to sufficiently reduce the load, a large gas spring with a strong biasing force must be used, It also contributed to the cost increase.

  The present invention has been made paying attention to such a point, and the simplification of the lock structure reduces the lifting swing load of the upper airframe (upper threshing case) and contributes to cost reduction. The main purpose is to provide an openable threshing device.

1st invention connects the upper threshing case which pivotally supported the handling cylinder with respect to the lower threshing case provided with the selection part so that rocking | fluctuation opening is possible upwards, and it fixes to the work position which lowered | hung the said upper threshing case In the threshing apparatus configured to be able to be released by the operation tool provided in the upper threshing case,
On the free end side of the upper threshing case, a frame ridge is rotatably supported over the longitudinal length of the upper threshing case, and this frame ridge is interlocked and connected so as to be rotated by the operation of the operation tool,
The upper threshing case is equipped with a locking tool that is engaged with and disengaged from the lower frame provided at the rear of the lower threshing case, bypassing the draining passage passage of the lower threshing case, and this locking tool is used to rotate the frame ridge. It is configured to be engaged and disengaged in conjunction with each other.

  According to the said structure, while a frame trough is a member which ensures the intensity | strength of the free end side in an upper threshing case, it functions as an operating shaft of the locking tool which fixes an upper threshing case to a lower threshing case in the rear part of a threshing apparatus.

  Therefore, according to the first invention, a dedicated operation shaft for swinging the lock tool in conjunction with the operation tool for switching the lock mechanism is not required, and accordingly, the upper threshing case is reduced in weight and the number of parts is reduced. It is possible to reduce the lifting and swinging load of the upper threshing case, and it is also effective for cost reduction.

The threshing apparatus according to the second invention is the first invention,
The locking device is connected and fixed to a rear portion of the frame rod.

  According to the said structure, while the intensity | strength of a flame | frame trough becomes the fulcrum intensity | strength of a locking tool as it is, while bringing about the said effect of 1st invention, the locking intensity | strength in the rear part of a threshing apparatus becomes high.

In the threshing apparatus according to the third invention, in the first or second invention,
The rotation direction and the locking direction of the frame ridge are set so that the locking device engages with the lower frame from the inside of the lower threshing case.

  According to the above configuration, the lock tool that has been activated in the unlocking direction will be displaced inside the upper threshing case, so an operator standing outside the threshing device needs to be careful not to touch the lock tool. The upper threshing case can be lifted and swung, and the above-mentioned effects of the first or second invention can be brought about, and the handleability is also excellent.

In the threshing apparatus according to the fourth invention, in any one of the first to third inventions,
A spring for turning and energizing the frame rod in the locking direction is mounted.

  According to the above configuration, since the frame rod which is the operation shaft of the lock tool is rotated and biased, the frame rod can be slightly biased and rotated to reliably transmit the lock biasing force to the lock tool. While bringing about the above-mentioned effect of any one of inventions 3 to 3, the locking device in the rear part of the threshing device can exhibit a reliable locking function.

In the fourth invention, the threshing apparatus according to the fifth invention,
The spring is configured to reverse the biasing direction by forward and reverse rotation of the frame rod.

  According to the above configuration, once the operating tool is operated in the unlocking direction while the upper threshing case is locked at the work position, the locking tool is attached in the locking direction by the reversal of the spring accompanying the rotation of the frame rod. Since the threshing state is switched to the urging state in the unlocking direction, even if the upper threshing case that has been lifted is inadvertently lowered, the automatic locking operation by the locking device is not performed at the rear of the device, and the unlocking operation is performed. The upper threshing case can be lifted again as it is.

  Conversely, when the operating tool is operated in the locking direction with the upper threshing case open, the locking tool is moved from the biased state in the unlocking direction to the locking direction by the reversal of the spring accompanying the rotation of the frame rod. When the upper threshing case is lowered to the predetermined working position, the lock tool biased in the locking direction is automatically locked.

  Therefore, according to 5th invention, while bringing the said effect of 4th invention, the lock release operation | movement at the time of lifting open of the upper threshing case and the lock operation at the time of descent | fall are easy.

  FIG. 1 shows a side view of the threshing device taken along a vertical section, FIG. 2 shows its front side, and FIG. 3 shows its rear side. This threshing device is used by being mounted on a combine, and feed chain 1 feeds a harvested cereal meal that has been harvested by a harvesting unit provided on the left side of the figure in FIG. In the state that the head portion is inserted into the handling chamber 2, the threshing process is carried out by the handling cylinder 3 that is pivotally supported in the front and rear horizontally in the handling chamber 2 by moving it from the left to the right in the figure. The separated processed product is sorted by the receiving net 4 stretched along the lower part of the handling chamber, and the fine treated product that has leaked through the receiving net 4 is placed in the first half of the swing sorting unit 5 arranged below the handling chamber 2. While dropping and supplying, a large processed material that has not leaked through the receiving net 4 is unloaded from the dust feed port 6 at the end of the handling chamber, dropped and supplied to the middle part of the swing sorting unit 5 and dropped to the swing sorting unit 5 The supplied processed material is received by a rocking sorting case 7 that is long in the front-rear direction, and the placed processed material is rearward (in the figure, And sieving using a front chaff sheave 8 for coarse sorting, a granular sheave 9 for fine sorting, a sorting rack 10 for loosening, a rear chaff sheave 11, a Strollack 12, and the like. In addition, the sorting wind supplied toward the rear upper side from the Kara 13 provided at the front end of the sorting unit is blown and subjected to wind selection processing, and the grains leaked from the glenshive 9 are sorted and collected by the first collecting unit 14 and the rear part. The second thing leaking from the chaff sheave 11 and the stroller 12 is sorted and collected by the second collecting unit 15, and the grains collected by the first collecting unit 14 are laterally fed to the outside by the first screw 16 and then screw type. After being lifted by the cerealing device 17 and supplied to a collecting unit such as a grain tank, the second thing collected in the second collecting 15 is laterally fed by the second screw 18 and then screwed. And pumped by 2nd reduction device 19 is configured to perform the re-sorting process by reducing supplied to the swing sorting casing 7.

  In addition, a dust exhaust fan 20 composed of a cross-flow fan is placed horizontally at the rear upper part of the swing sorting unit 5 at the rear upper part of the swing chamber 2 so as to be positioned below the exhaust fan transport path. Dust and straw scraps blown out from the dust feed port 6 formed at the end of the dust, and dust dust and straw scraps blown above the rear of the swing sorting portion 5 by the sorting wind are sucked into the dust exhaust fan 2 and forcedly It is designed to be discharged to the rear of the aircraft. In addition, a waste straw conveying device 21 is disposed above the dust exhaust fan 20, and the waste straw in a sideways posture that has been carried out from the handling chamber 2 is obliquely conveyed rearward and toward the tip, and the threshing device It is supplied to a waste straw processing apparatus such as a waste straw cutter or a waste straw binding apparatus attached to the rear end.

  As shown in FIGS. 10 and 11, the cerealing device 17 is composed of a screw conveyor in which a vertical screw 17 b that is interlocked and connected to a first screw 16 is mounted on a vertical conveying cylinder 17 a. The fed grain is splashed from the discharge port 17d by a discharge blade 17c provided at the upper end of the vertical screw 17b. In addition, a large number of slits 22 are spirally formed in the conveying cylinder 17a at substantially the same angle as the blade inclination angle of the vertical screw 17b, and the branch of the grain to be transported is caught by the slits 22 and removed. It has become so.

  For example, as shown in FIG. 12 (a), the slits 22 for removing the branch limbs are formed sideways so as to be orthogonal to the feeding direction, or as shown in FIG. 12 (b). It can also be carried out by forming it vertically along the feeding direction. In addition, the second reduction device 19 may be provided with the branch limb removal function as described above.

  The threshing apparatus configured as described above is responsively manufactured so as to be openable and closable so as to easily perform cleaning of the handling chamber, cleaning of the receiving net, cleaning of the swing sorting portion, and the like.

  That is, the case of this threshing device is divided into an upper threshing case 31 and a lower threshing case 32 with the handling port 30 through which the cereals pass as a boundary, and the upper threshing case 31 has a counter shaft 33 for power transmission. It is pivotally connected to the lower threshing case 32 so as to be able to swing up and down around the deployed axial center P.

  The handling cylinder 3 is pivotally supported across the front and rear side plates 31f and 31r constituting the handling chamber 2 in the upper threshing case 31, and the outer surface of the upper threshing case 31 on the handling port 30 side, that is, the outer surface of the free end portion. Is equipped with a clamping rail 23 facing the feed chain 1. On the other hand, in the lower threshing case 32, the swing sorting unit 5 is accommodated and arranged, and the receiving net 4 facing the handling cylinder 2 from below is detachably mounted, and the outer surface on the handling mouth 30 side. Is equipped with the feed chain 1. Gas springs 34 and 35 are installed between the front and rear side plates 31f and 31r of the upper threshing case 31 and the front and rear side plates 32f and 32r of the lower threshing case 32 in order to assist lifting and swinging of the upper threshing case 31. The gas springs 34 and 35 are configured to bear a part of the weight of the upper threshing case 31.

  A lock structure for fixing the upper threshing case 31 that can be swingably opened and closed to a working position in which the upper threshing case 31 is swung downward is configured as follows.

  The front and rear side plates 31f and 31r in the upper threshing case 31 are fitted with lock levers 36 and 37 that can swing around a fulcrum a in the front and rear direction near the barrel axis, and the front and rear side plates in the lower threshing case 32. 34f and 34r are provided with lock pins 38 and 39 with which hook portions 36a and 37a formed at the tips of the lock levers 36 and 37 are engaged. The operation ends of the front and rear lock levers 36 and 37 are extended to the upper outside of the handle 30 and are connected to each other by an operation grip (operation tool) 40. By operating the operation grip 40 up and down, both front and rear The hook portions 36a, 37a of the lock levers 36, 37 can be engaged with and disengaged from the lock pins 38, 39.

  Therefore, when the operation grip 40 is pulled down and the upper threshing case 31 is lowered to a predetermined working position, the locked state in which the hook portions 36a and 37a of the front and rear lock levers 36 and 37 are engaged with the lock pins 38 and 39, respectively. When the operation grip 40 is lifted, the hook portions 36a, 37a of the front and rear lock levers 36, 37 are first released from the lock pins 38, 39 to bring the lock release state, and the operation grip 40 continues. The upper threshing case 31 can be largely swung upward by swinging up.

  On the free end side of the upper threshing case 31, a frame rod 41 made of a round pipe material is rotatable via a pair of front and rear brackets 42 located at the front and rear ends of the upper threshing case 31, and in the front-rear direction. It is suspended so that it cannot move. The frame ridge 41 is greatly extended rearward from the upper threshing case, and a hook-like lock tool 43 is attached and fixed near the extension end so that the position can be adjusted.

  In addition, a pair of front and rear operation arms 44 project from the frame rod 41, and the link links 45 pivotally connected to the lock levers 36 and 37 and the operation arms 44 are pivotally connected. , 37 is rotated in the forward and reverse directions in conjunction with the vertical swing of the frame 37.

  On the other hand, a lower frame 46 made of a round pipe material bent around the exhaust wall passage route is fixed to the upper part of the rear half of the lower threshing case 32, and is provided at the rear end of the frame rod 41. The lock 43 is configured to engage with the lower frame 46.

  As shown in FIGS. 6 and 7, a positioning guide member 47 is fixed to the lower frame 46, and the locking member 43 is guided by a widening slit 48 formed in the guide member 47, so that the lower frame 46 is correctly engaged at a predetermined position with no positional shift from the inside to the front and rear of the lower threshing case 32.

  Further, a spring 50 is stretched across the pivot support pin 49 between the operation arm 44 and the linkage link 45 of the frame rod 41 and the bracket 42, and the tension of the spring 50 causes a rotational biasing force to the frame rod 41. At the same time, the pivot support pin 49 is moved by the rotation of the frame rod 41 so that the direction of the rotation biasing force applied to the frame rod 41 is reversed.

  That is, as shown in FIGS. 2 and 9 (a), when the upper threshing case 31 is lowered to the working position and the lock levers 36 and 37 are in the locked state, the frame rod 41 has the lock 43 attached to the lower frame 46. Although it is urged to rotate in the locking direction to be engaged, once the operation grip 40 is lifted and the lock levers 36 and 37 are once operated in the unlocking direction, as shown in FIGS. When the support connecting pin 49 exceeds the dead point, the biasing rotation direction of the frame rod 41 by the spring 50 is reversed to the unlocking direction, and the frame rod 41 is unlocked unless the operation grip 40 is pulled down. State is maintained.

Longitudinal side view of threshing device Front view of threshing device Rear view of the threshing device Front view of the room open Perspective view of frame structure Rear view of lock structure operation section Exploded perspective view of lock structure Rear view showing the lock structure operation section and lock structure Front view of the lock structure operation section Longitudinal front view of whipping machine Side view of whipping equipment Side view showing a cerealing apparatus of another embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Handling cylinder 5 Sorting part 31 Upper threshing case 32 Lower threshing case 40 Operation tool 41 Frame hook 43 Locking tool 46 Lower frame 50 Spring

Claims (5)

A lock mechanism for connecting the upper threshing case pivotally supporting the handling cylinder to the lower threshing case provided with the selection unit so that the upper threshing case can be swung open upward and fixing the upper threshing case to the working position where the upper threshing case is lowered, In the threshing device configured to be releasable by the operation tool provided for the upper threshing case,
On the free end side of the upper threshing case, a frame ridge is rotatably supported over the longitudinal length of the upper threshing case, and this frame ridge is interlocked and connected so as to be rotated by the operation of the operation tool,
The upper threshing case is equipped with a locking tool that is engaged with and disengaged from the lower frame provided at the rear of the lower threshing case, bypassing the draining passage passage of the lower threshing case, and this locking tool is used to rotate the frame ridge. A threshing apparatus configured to be interlocked and disengaged in conjunction with each other.   2. The threshing apparatus according to claim 1, wherein the locking member is connected and fixed to a rear portion of the frame bowl.   The threshing device according to claim 1 or 2, wherein a rotation direction and a locking direction of the frame ridge are set so that the locking tool engages the lower frame from the inside of the lower threshing case.   The threshing apparatus according to any one of claims 1 to 3, wherein a spring for turning and energizing the frame ridge in the lock direction is attached.   The threshing apparatus according to claim 4, wherein the spring is configured to reverse a biasing direction by forward and reverse rotation of the frame rod.

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