JP2017063689A - Receiving net removable structure of threshing ne - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiving net removable structure of a threshing unit in which demount work of a receiving net can easily be performed efficiently by detachment means for forcibly separating a right receiving net to the left direction from front and rear mounting frames without preparing for a special tool and damaging the right receiving net.SOLUTION: A receiving net removable structure of a threshing unit is provided for mounting the upper side of a right receiving net 21R through top detachable means pluggable to the right machine wall 6e side, and detachably mounting the lower frames 33dL/33dR of the lower side part of the left and right receiving nets 21 L/21R to front and rear mounting frames 27 through insertion fastening of an undersize frame bolt 30, when detachably mounting the left receiving net 21 L and the right receiving net 21R along a threshing cylinder to a threshing chamber frame 26 installed in the longitudinal direction and the back and forth mounting frames 27 for connecting both nets. The receiving net removable structure is configured by providing detachment means 40 for forcibly separating the lower frame 33dR from the front and rear mounting frames 27 to the left direction to the right receiving net 21R while detaching the undersize frame bolt 30.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a receiving net attaching / detaching structure of a threshing portion that can be mounted on a combine or the like.

Conventionally, the receiving nets installed along the outer periphery of the lower side of the barrel that is pivotally supported by the front machine wall and the rear machine wall in the handling chamber are the left receiving network and the right receiving network that are divided in the left-right direction of the fuselage. In addition, a receiving net attaching / detaching structure for a threshing portion that attaches both in a detachable manner through a handling chamber frame installed with a receiving net attaching interval in the front-rear direction is already known. (For example, Patent Document 1)
The above-mentioned receiving net attaching / detaching structure attaches the upper side of each of the left receiving net and the right receiving net to the left machine wall side and the right machine wall side via an upper attaching / detaching means that allows the pins to be inserted into and removed from the pin holes. The lower frame of the left receiving mesh and the right receiving mesh are connected to the front and rear mounting frames that connect the lower part of the handling chamber frame in the front-rear direction, and the bolt holes drilled in both are inserted and tightened through the mesh frame bolts. It is configured to be detachable.

JP 2013-183653 A

The threshing portion provided with the receiving net attaching / detaching structure shown in Patent Document 1 and mounted on the combine is when the receiving net is clogged due to adhesion of sawdust, dust, mud, etc., by continuing the combine operation, or When cereal clogging occurs in the handling room, maintenance work by the user is performed, and after the maintenance, the receiving net is reattached. In this case, the removal work of the receiving net is performed by opening the side cover configured on the left machine wall side of the threshing part and opening the left side of the receiving net largely, then removing the left receiving net from the opening and then removing the right receiving net. By removing them, maintenance work such as cleaning, repairing, and net replacement of the both is performed.
However, if the receiving net is harvested and threshed under bad conditions where it is wet with rain water or lying on the ground, or if the receiving net is left without being cleaned and maintained, the receiving net such as the handling room frame is used. Removable nets cannot be removed by simply removing the bottom frame bolts, etc., when removing the receiving nets due to swarf, dust, mud, etc., sticking to the attachment / detachment structure or rusting. It will be a state. Therefore, the removal work of the receiving network in which the receiving network is stuck is generally performed as follows.

That is, to remove the left receiving mesh facing the front side of the opening, remove the lower frame bolts etc. of the lower frame using a spanner without taking an unreasonable posture, and remove the left receiving mesh in the front-rear direction or separation. Directional (leftward) force and vibration can be applied as desired. As a result, in the large space on the opening side, the left receiving net can pull out the pin as the attaching / detaching means from the pin hole, and it can be removed from the handling chamber frame and the front / rear mounting frame relatively easily and easily out of the body from the opening. Can be removed.
On the other hand, the right receiving net installed on the back side of the opening of the handling room is located in a narrow space on the back side where the upper attaching / detaching means consisting of pins and pin holes cannot be reached from the opening, and the lower part of the right receiving net The attaching / detaching means makes the right receiving mesh lower frame directly contact with the front and rear mounting frames and is inserted and fastened by the mesh lower frame bolt.
For this reason, especially when cereal clogging has occurred remarkably in the handling chamber that has become locked to the receiving net, the clogging cereal that is clogged in the back of the handling chamber and cannot be removed from the opening side of the right receiving net Since the back side (right side) remains pressed strongly, and the front side (left side) of the right receiving mesh has a large contact area with the front and rear mounting frames and is in a rusted and fixed state, It is difficult to remove the right receiving net by applying a large vibration or sliding force with a hand inserted in a narrow space from the part side to the back side. Therefore, when removing the worker using a hammer or a bar in a narrow space, the worker applies a large force or vibration to the right receiving net in an unreasonable posture to release the fixing state of the receiving net and remove it. Therefore, the right receiving net and its mounting member have problems such as deformation and breakage due to a large external force, and complicated and time-consuming removal work.

In order to solve the above problems, the threshing portion receiving / removing structure of the threshing portion according to the present invention is, firstly, the outer periphery on the lower side of the barrel 20 that is pivotally supported by the front machine wall 6b and the rear machine wall 6c in the handling chamber 11. A receiving net 21 composed of a left receiving net 21L and a right receiving net 21R divided in the left-right direction of the machine body is attached between the handling chamber frames 26 installed with a receiving net attaching interval in the front-rear direction. In addition, at least the upper side of the right receiving net 21R is attached to the right machine wall 6e side through an upper attaching / detaching means that can be freely inserted and removed, and the front and rear attachment frames 27 that connect the lower parts of the front and rear chamber frames 26 in the front-rear direction. On the other hand, the lower frame 33dR of the right receiving net 21R and the lower frame 33dL of the left receiving net 21L are detachably attached to the bolt holes 35 drilled in both via insertion fastening of the net lower frame bolt 30, and the left machine Formed by opening the side cover 6h provided on the wall 6d That from the opening 6k, in 受網 detachable structure threshing unit removing the right 受網 21R Remove the left 受網 21L,
When the receiving net 21 is removed, a detaching means 40 that forcibly separates the right receiving net 21R in the left direction from the front and rear mounting frames 27 in a state where the bottom frame bolt 30 of the right receiving net 21R is removed is provided in the right receiving net. The lower frame 33dR of 21R is provided.
Second, the detaching means 40 has a configuration in which a detaching screw hole 37 into which the mesh frame bolt 30 can be inserted is provided in the vicinity of the bolt hole 35 formed in the lower frame 33dR of the right receiving mesh 21R. It is characterized by.
Thirdly, the detaching means 40 is provided with a long detachment hole 41 in the lower frame 33dR of the right receiving net 21R, and a pin-shaped fulcrum with an insertion interval in the middle of the detachment hole 41. A feature is that the piece 42 is fixed.
Fourth, the lower frame 33dR of the right receiving net 21R is brought into contact with the left side surface of the front and rear mounting frame 27, and the lower frame 33dL is overlapped with the lower frame 33dR. It is characterized by being attached by the lower frame bolt 30.

According to the first aspect of the present invention, the left receiving network and the right receiving network that are divided in the left-right direction of the machine body along the outer periphery on the lower side of the handling cylinder that is pivotally supported by the front machine wall and the rear machine wall in the handling chamber. To attach the receiving network consisting of the above and between the handling chamber frames installed in the front-rear direction with a receiving network mounting interval, at least the upper side of the right receiving network is detachable from the upper side of the right machine wall. The lower frame of the right receiving mesh and the lower frame of the left receiving mesh are connected to the bolt holes drilled in both of the front and rear mounting frames that are attached through the means and connect the lower portions of the front and rear chamber frames in the front and rear direction. Receiving net of threshing part which is attached detachably through insertion fastening of lower frame bolt and removes left receiving net and removes right receiving net from opening formed by opening side cover provided on left machine wall In the attachment / detachment structure, the lower frame can be attached to the right receiving mesh with the lower frame bolt removed. According to the receiving net attaching / detaching structure provided with the separating means by providing the separating means forcibly separating in the left direction, when the left receiving net is removed from the handling frame and the front and rear mounting frames, the back side of the handling chamber When the right receiving mesh located at is firmly attached to the front and rear mounting frames due to dust and mud adhering to the receiving mesh, remove the mesh lower frame bolts that fasten the two, and then release the right Since the lower frame of the receiving mesh can be forcibly separated from the front and rear mounting frames in the left direction, the right receiving mesh can be narrowed without preparing special tools or damaging the right receiving mesh by applying excessive force. It is possible to remove the receiving net easily and surely even in a space efficiently and easily.
According to the invention which concerns on Claim 2, the said removal means is made into the structure which provided the detachment screw hole which can insert a mesh frame frame volt | bolt in the vicinity of the bolt hole drilled in the lower frame of the right receiving mesh. Thus, when removing the right receiving mesh, the mesh frame bolt removed from the bolt hole can be screwed into the release screw hole, and the mesh frame bolt has a bolt end protruding from the lower frame as the screw is screwed in, The bottom frame that is fixed to the front / rear mounting frame is forcibly separated from the front / rear mounting frame to contact the left side of the front / rear mounting frame, and the right receiving net is moved to the front / rear mounting frame. Can be easily removed. In addition, since the underframe bolt for attaching the receiving net can be used as the detachment tool, it is possible to easily perform the detachment work without preparing a special bolt or tool.
According to the invention of claim 3, the detaching means is provided with a slot-like detaching hole in the lower frame of the right receiving net, and has a pin-like shape with an insertion interval in the middle of the detaching hole. By adopting a configuration in which the fulcrum piece is fixed, when a leverage tool such as a screwdriver is inserted into the release hole, the tip is inserted into the fulcrum piece and brought into contact with the front and rear mounting frames. Since it can be moved in the separating direction by the action, the lower frame can be forcibly separated from the front and rear mounting frames via the fulcrum piece. Therefore, even if the right receiving net is firmly fixed to the front and rear mounting frames, the right receiving net can be easily and easily removed.
According to the invention of claim 4, the lower frame of the right receiving mesh is brought into contact with the left side surface of the front and rear mounting frame, and the lower frame is overlapped with the lower frame of the left receiving mesh. By attaching with the lower frame bolts, the receiving net can be integrated with the front and rear mounting frames, so that the left and right receiving nets can be removed simultaneously from the front and rear mounting frames via the detaching means. A series of net installation and removal operations can be performed efficiently and easily.

It is a top view which shows a normal type combine. It is a side view which shows a normal type combine. It is side surface sectional drawing which shows a threshing part and a selection part. It is front sectional drawing which shows a threshing part. It is a perspective view which shows the structure of a supply port and a receiving network. It is side surface sectional drawing of FIG. It is front sectional drawing of the principal part which shows the state in which the right receiving net and the left receiving net were attached to the front-and-rear attachment frame. It is a disassembled perspective view of the removal means which decomposes | disassembles and shows the structure of the principal part of FIG. It is a disassembled perspective view of the removal means concerning another embodiment which decomposes | disassembles and shows the structure of the principal part of FIG. FIG. 6 is a plan view of FIG. 5.

Embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a normal (general purpose) combine. This combine 1 is provided on a machine frame 3 having a pair of left and right traveling devices 2, a driving unit 4, a motor unit and a grain tank (grain storage unit) on the right side position. ) 5 is arranged in the front-rear direction, the threshing part 6 having the receiving net attaching / detaching structure according to the present invention is arranged on the left side position, and the reaping part 7 is placed in front of the threshing part 6 via the transport part 9. It arrange | positions so that raising / lowering is possible so that cutting height adjustment may be performed. The transport unit 9 has a chain conveyor type feeder 9b rotatably mounted in the transport direction inside a transport frame 9a having a rectangular box-shaped cross section, and supplies the threshing unit 6 with the harvested cereal meal fed from the mowing unit 7 It is designed to be conveyed and supplied to the mouth 10. (Figure 3)

  As shown in FIGS. 1 to 4, the threshing unit 6 threshs the cereals supplied from the conveying unit 9 of the reaping unit 7 in the handling chamber 11, and the threshing that has been threshed is housed in the sorting chamber 12. The sorting mechanism 13 and the air blowing mechanism 15 perform rocking sorting and wind sorting. Further, below the swing sorting mechanism 13, a laterally oriented first hook part 17 and a second hook part 18 constituting the bottom plate part 16 of the threshing machine body 6 a are arranged in the front-rear direction. And the 1st thing selected by rocking | fluctuation is supplied to the glen tank 5 via the 1st cerealing apparatus which is not shown in figure from the lateral feed terminal of the 1st ridge part 17, and the 2nd in which a grain and sawdust are mixed An object is reduced and supplied from the lateral feed end of the second collar 18 to the handling chamber 11 via a second reduction device.

  As a result, the combine 1 harvests the cereals to be planted in the field by the harvesting unit 7, and transports and supplies the entire harvested cereals from the platform to the handling room 11 of the threshing unit 6 via the transport unit 9. The grains (fine grains) threshed in 11 and sorted in the sorting chamber 12 are supplied to and stored in the grain storage unit 5 and collected, and the dust discharged from the handling chamber 11 and the swing sorting mechanism 13 is recovered. A thing is discharged | emitted out of the machine from the discharge part 19 formed in the rear part of the threshing part 6, and a series of combine work is performed. The swing sorting mechanism 13 is provided with a grain pan, a chaff sheave, a stroll rack and the like in order from the front on a sorting structure 13a supported so as to be swingable back and forth via the swing mechanism, and a conventional grain sheave or the like at a lower position. It is provided by the same structure.

  And as shown in FIGS. 2-6, the threshing part 6 which performs a threshing operation | work as mentioned above is in front of the cylindrical barrel body part 20a in the handling chamber 11 comprised by the upper part of the threshing machine body 6a. A handling cylinder 20 in which a scraping part 20b is formed is pivotally supported on the front machine wall 6b and the rear machine wall 6c of the threshing machine body 6a via a handling cylinder shaft 20c so as to be rotationally driven in the arrow direction. Further, the receiving net 21 according to the present invention is detachably and replaceably installed on the outer periphery on the lower side of the barrel body 20a, and an inlet connected to the terminal end of the transport unit 9 is provided below the scrambling unit 20b. A receiving plate 22 is installed to form the supply port 10 of the handling chamber 11.

  The scraping portion 20b has a conical drum shape having a small diameter on the front side and a rotational diameter of the main body portion 20a on the rear side, and a corn kernel supplied from the supply port 10 to the outer peripheral surface thereof. The two spiral blades 23 are erected so as to be fed toward the barrel body 20a. The barrel body 20a is provided with a spiral blade 23a, which takes over the cereals fed from the spiral blade 23 of the scraping portion 20b on the outer periphery of the cylindrical body, and feeds backward while threshing, and the outer peripheral side of the cylindrical body The discharge handle teeth 23b are erected so as to face the dust feed port 11a formed between the end of the receiving net 21 and the rear machine wall 6c.

  On the other hand, the upper opening 6k of the chamber 11 surrounded by the front machine wall 6b and the rear machine wall 6c and the left machine wall 6d and the right machine wall 6e is covered with a top plate cover 6f so as to be freely opened and closed. On the back surface of the cover 6f, a plurality of guide plates 6g for guiding the movement of the threshing in the circumferential direction and the backward movement are disposed. Then, as shown in FIG. 4, on the left machine wall 6d side of the threshing portion 6, an opening 6k having a rectangular shape 6k that opens a portion facing the receiving net 21 of the handling chamber 11 is formed. 6k is provided with a side cover (lider wall) 6h that can be freely opened and closed. With this configuration, when the side cover 6h is opened upward as indicated by a two-dot chain line, maintenance work such as attachment / detachment or cleaning of the receiving net 21 can be performed from the opened opening 6k. The supply port 10 is provided with an inlet protrusion guide 24 having a configuration which will be described later on the inlet receiving plate 22, and the cereals that have reached the inlet receiving plate 22 with the scraping portion 20 b are smoothly put into the handling chamber 11. The cereal feed mechanism 25 to be fed into the machine is configured.

  Next, the receiving network 21 will be described with reference to FIGS. The receiving net 21 is formed in a substantially U shape as a whole in a front view covering the lower periphery of the handling cylinder 20, and the left side (outside of the handling room, that is, the front side) and the right side (side of the handling room). It is composed of a left receiving net 21L and a right receiving net 21R that are positioned inward (that is, on the back side). Although detailed description of the receiving network 21 is omitted, each of the left receiving network 21L and the right receiving network 21R is configured to be divided into two in the longitudinal direction of the body.

  That is, the receiving network 21 is divided into four parts in the left-right direction of the body and two parts in the front-rear direction of the body. Each of the left receiving net 21L and the right receiving net 21R connects a plurality of handling chamber frames 26 installed with a receiving mesh mounting interval in the front-rear direction to the lower side of each handling chamber frame 26, which will be described later. It is configured to be detachable from the front and rear mounting frame 27 and the like. A detailed procedure for attaching and detaching the receiving network 21 will be described later.

  The handling chamber frame 26 is attached and fixed at three locations on the front side, the rear side, and the front and rear intermediate side of the handling chamber 11 by connecting the left machine wall 6d and the right machine wall 6e. The front-side handling chamber frame 26 connected to the terminal end of the inlet receiving plate 22 and the rear-side handling chamber frame 26 facing the dust feeding port 11a are located at a position directly below the barrel shaft 20c, that is, at the lower end of the frame. The substantially central portion is connected and supported by a front and rear mounting frame 27 having a cross-sectional shape as shown in FIG. 7 and straight in the front and rear direction, and an intermediate chamber frame 26 is connected to the middle portion of the front and rear mounting frame 27.

  Each chamber frame 26 is provided with a right receiving portion 26a that guides each right receiving net 21R to a corresponding predetermined position by an arcuate guide surface so as to be freely inserted and removed. Each chamber frame 26 has bolt holes for fastening the front and rear sides of the left receiving net 21L and the right receiving net 21R with front and rear bolts 28. A pin 29 projecting from the upper end sides of the left receiving net 21L and the right receiving net 21R can be inserted and removed freely between the left and right upper walls 6d and right of the handling chamber frame 26. An upper attaching / detaching means is formed by forming a pin hole 29a. The front / rear mounting frame 27 has a plurality of screw holes 31 for fastening the lower ends of the opposing left receiving net 21L and right receiving net 21R with the net frame bolts 30. The upper attaching / detaching means is not limited to that shown in the illustrated example, and protrudes downward on the left machine wall 6d side and the right machine wall 6e side, and is drilled in the pins 29 at the upper end sides of the left receiving net 21L and the right receiving net 21R. The pin hole 29a may be configured to be freely inserted and removed.

  As shown in FIGS. 6 and 7, the left receiving net 21L and the right receiving net 21R are formed by, for example, spot welding on a net 33 having a rectangular shape in the plan view and an arc shape in the front view. While being integrated by the tensioning means, the net frame 33 has a configuration in which front and rear frames and upper and lower frames bent in an L shape are connected in a square shape. The front frame 33a and the rear frame 33b have the bolt holes so that the bolts can be freely fixed to the opposing handling chamber frames 26, and the upper frame 33c projects the plurality of pins 29 upward to the pin holes 29a. As shown in FIGS. 7 and 8, the lower frame 33d can be freely inserted and removed, and the bolt hole 35 into which the mesh frame bolt 30 is inserted, and the bolt head 30a and the screw portion of the mesh frame bolt 30 can be passed downward. The notch hole 36 is formed.

  When the left receiving net 21L and the right receiving net 21R having this configuration are attached to the left side surface of the front and rear mounting frame 27, first, the lower frame 33dR of the right receiving net 21R is brought into contact with the net lower frame bolt 30 to the bolt hole 35. And then tightening the lower frame 33dL of the left receiving mesh 21L on the lower frame 33dR of the right receiving net 21R so that the lower frame bolt 30 is attached to the bolt hole of the left receiving net 21L. When passing through the cutout hole 36 of the right receiving net 21 </ b> R while passing through 35, the other screw hole 31 can be fastened. Further, the lower frame 33dR of the right receiving mesh 21R of the embodiment is provided with a detaching screw hole 37 into which the mesh lower frame bolt 30 can be inserted in the vicinity of the notch hole 36 or the bolt hole 35.

  The detaching screw hole 37 can be easily provided by a structure having strength by attaching a nut 37a to a bolt hole as a lower hole formed in the lower frame 33dR by means such as welding. As a result, the mesh frame bolt 30 removed from the screw hole 31 can be screwed into the release screw hole 37. At this time, as the mesh frame bolt 30 is screwed, the bolt end protruding from the lower frame 33dR comes into contact with the left side surface of the front / rear mounting frame 27 and pushes the bottom frame 33dR. As a result, the right receiving net 21R can be easily removed from the front and rear mounting frame 27 by being separated from the front and rear mounting frame 27.

  That is, according to the receiving net attaching / detaching structure provided with the detaching means 40 of the first embodiment, the lower frame 33dR of the right receiving net 21R can be inserted into the lower frame 33dR in the vicinity of the bolt hole 35 so as to be freely inserted. Since the detaching means provided with the hole 37 is configured, the mesh lower frame bolt 30 for attaching the receiving net 21 can be used, so that the detaching operation can be easily performed by a spanner without preparing a special bolt or tool. And the removal work of the receiving net 21 can be efficiently performed while preventing the tools and the underframe frame bolts 30 from being dissipated. In this case, the lower frame 33dL of the left receiving net 21L is provided with a notch 36a so as to avoid contact with the nut 37a.

  Next, the attaching / detaching operation of the receiving net 21 of the threshing unit 6 including the receiving net attaching / detaching structure including the detaching means 40 of the first embodiment configured as described above will be described. First, the threshing unit 6 of the combine 1 is subjected to the combine work by the receiving net 21 installed at the time of shipment from the factory, and when the receiving net 21 is clogged due to swarf, dust, mud, etc., or At the time when grain clogging or the like occurs in the handling chamber 11, maintenance work such as cleaning or replacement of the receiving net 21 is performed by the user, and the receiving net 21 is reattached after maintenance.

  First, the removal work of the receiving net 21 requiring maintenance work is performed by opening the side cover 6h shown by a solid line in FIG. 4 upward as shown by a two-dot chain line so that the left side of the receiving net 21 is largely opened as shown in FIG. After that, the operator inserts both hands from the opening 6k, first removes the left receiving net 21L, and then removes the right receiving net 21R, thereby maintaining both the maintenance work and the maintenance cylinder 20 and the swinging sorter 13 and the like. Work can be done. That is, the left receiving mesh 21L can remove the pin 29 as the upper attaching / detaching means from the pin hole 29a by removing the front and rear bolts 28 and the lower frame bolt 30 of the lower frame 33dL. The left receiving net 21L removed from the mounting frame 27 can be removed from the opening 6k to the outside of the machine body.

  Next, the right receiving net 21R is removed from the left receiving net 21L in a state where the joining to the chamber frame 26 is first released and then the net lower frame bolt 30 of the lower frame 33dR is removed and the bolt fixing is released. Similarly, when the pin 29 of the upper attaching / detaching means is extracted from the pin hole 29a, the right receiving net 21R is in a free state supported by the right receiving portion 26a of the front and rear chamber frames 26. Thus, the operator can perform maintenance work by sliding the right receiving net 21R to the left along the arcuate surface of the right receiving portion 26a and taking it out of the opening 6k.

  Next, the attachment work of the right receiving net 21R and the left receiving net 21L after completing the necessary maintenance work will be described. First, the right receiving net 21R is inserted into the handling chamber 11 from the opening 6k, slid along the right receiving portion 26a, and after inserting the pin 29 into the pin hole 29a, the lower frame 33dR is placed on the left side of the front and rear mounting frame 27. The mesh lower frame bolt 30 is inserted into the bolt hole 35 and fastened to the screw hole 31 of the handling chamber frame 26 to fix the right receiving mesh 21R.

  Next, while putting the left receiving net 21L into the handling chamber 11, the pin 29 as the upper left attaching / detaching means is inserted into the pin hole 29a, and the lower frame 33dL is overlapped on the lower frame 33dR fixed to the front and rear mounting frame 27, and FIG. As shown in the figure, the mesh frame bolt 30 is inserted into the bolt hole 35 and the cutout hole 36 of the lower frame 33dR, and is fastened to the screw hole 31 for attaching the lower frame 33dL provided in the front and rear mounting frame 27 to the left. The receiving network 21L is fixed. As a result, the receiving net 21 contacts the left side surface of the front and rear mounting frame 27 with the lower frame 33dR of the right receiving net 21R, and the lower frame 33dR overlaps the lower frame 33dL of the left receiving net 21L. Since the right receiving net 21R and the left receiving net 21L are attached together by the frame bolt 30, the rigid receiving net 21 can be integrally joined via the front and rear mounting frames 27. Can be efficiently and easily performed. Thereafter, the left receiving net 21L is fastened to the front and rear chamber frames 26 by the front and rear bolts 28, whereby the overlapping structure of the receiving net 21 can be further enhanced.

  Next, a receiving net attaching / detaching structure including the detaching means 40 according to the second embodiment 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 receiving net attachment / detachment structure provided with the removal means 40 of the said 1st Embodiment. 9 has a bolt hole 35 and a notch hole 36 formed in the lower frame 33dR of the right receiving net 21R, and a long hole-like detaching hole 41 is formed as a detaching means in the front-rear direction. The longitudinal pin-shaped fulcrum piece 42 is fixed to the left side surface of the middle part of the separation hole 41 in the longitudinal direction.

  In this case, the detachment means uses a rod-like lever 43 such as a screwdriver, which is a general-purpose tool, as indicated by a two-dot chain line, with the mesh frame bolt 30 removed, and puts its tip into the detachment hole 41 and The lever 43 can be rotated in the operation direction indicated by the arrow while being inserted inside the fulcrum piece 42 formed by the thickness of the lower frame 33dR. As a result, the lever 43 pushes the front / rear mounting frame 27 with the fulcrum piece 42 as a fulcrum, so that the lower frame 33dR is forcibly separated from the front / rear mounting frame 27 via the fulcrum piece 42 by the reaction force. Can do.

  Therefore, even in this case, even if the right receiving net 21R is firmly fixed to the handling chamber frame 26 side, the right receiving net 21R is forcibly separated to require an unreasonable operation and a large force. There is a feature that it can be easily and easily removed without any problems. According to the detaching means 40, when the fulcrum piece 42 is a column-shaped pin, a cam-like lever piece with an operating lever can be rotatably provided in the middle of the fulcrum piece 42 with a simple structure. Therefore, the right receiving net 21R can be quickly removed without requiring a lever tool 43 such as a special tool.

  Next, with reference to FIGS. 3, 5, 6, and 10, the cereal feeding mechanism 25 configured in the supply port 10 will be described. First, in the conventional threshing unit 6 as shown in Japanese Utility Model Publication No. 4-49922, the inlet receiving plate 22 of the supply port 10 is not provided with the cereal feeding mechanism 25, for example, the receiving plate portion Even if the cereals are evenly supplied over the entire width of 22a, the cereals on the backing plate 22a are rotated from the upper side in the rotational direction to the lower side due to the rotation of the raking part 20b and the rotational contact with the spiral blade 23a. To the left, and is fed to the left side of the receiving plate portion 22a so as to be accumulated in the handling chamber 11. For this reason, when a large amount of cereal straw is supplied, threshing by homogeneous threshing by the handling cylinder 20 is not sufficiently performed in the handling chamber 11, and the scraping unit 20 b is scratched on the left side of the supply port 10. There was a drawback that troubles such as clogging of cereal inlets due to remarkably large resistance to engraving and not being smoothly carried out were caused.

  Therefore, the threshing unit 6 according to this embodiment eliminates the above disadvantages with a simple and inexpensive configuration by providing the inlet receiving plate 22 of the supply port 10 with the culm feeding mechanism 25 having the following configuration. Like to do. That is, the inlet receiving plate 22 of the supply port 10 of the threshing unit 6 is a receiving plate portion 22a that receives the cereals supplied from the transport unit 9 in the front portion of the handling chamber frame 26 that supports the front portion of the receiving net 21. Is bent substantially so as to form a front-facing inclined surface having a letter-like shape when viewed from the side. And standing wall part 22L, 22R is integrally provided in the right-and-left end side of the receiving plate part 22a, and it is formed so that an upward U-shape may be made in front view.

  In this configuration, the inlet receiving plate 22 has a connecting plate 9c made of a flexible rubber plate or the like provided at the lower end of the conveying frame 9a of the conveying unit 9 placed on the leading end side of the inclined surface of the receiving plate 22a. It is hung and connected. The inlet receiving plate 22 is paired with the left and right inlet protrusion guides 24 between the end portion of the relay plate 9c and the drum end of the scraping portion 20b, with a middle guide interval N described later in FIG. It protrudes to.

  The inlet protrusion guide 24 is a belt-like plate that is straight when viewed from above and has a letter-shape that protrudes along the front and rear inclined surfaces of the receiving plate portion 22a. The protruding height of the upper side of the belt-like plate from the inlet receiving plate 22 of the inlet protrusion guide 24 is below the rotational trajectory of the spiral blade 23a, and the cereal supplied to the inlet receiving plate 22 is accompanied by the rotation of the barrel 20. By the action of the scabbard by the spiral blade 23a of the scraping part 20b, the scabbard moving on the plate and the inlet projection guide 24 does not interfere with the movement into the handling chamber 11 and the rotation of the spiral blade 23a, and The entrance protrusion guide 24 in a plan view is provided so as to have an appropriate guide height for smoothly guiding and guiding the cereal by a guide action by a guide angle θ described later.

  Further, it is desirable that the inlet protrusion guide 24 is provided so that the guide angle θ in plan view forms a receding angle of about 45 degrees from the axis of the handle cylinder along the arrow rotation direction of the handle cylinder 20. That is, in this case, the inlet protrusion guide 24 is configured such that the cereals supplied from the front side are rotated from the upper side (right side) in the rotational direction by the scumming action of the rake part 20b on the receiving plate part 22a. The cedar to be moved leftward (on the left side) is received by the entrance projection guide 24 at a guide angle θ of about 45 degrees and allowed to move backward while restricting leftward movement.

  Further, as shown in FIG. 10, the left and right inlet projection guides 24 are erected so as to be substantially parallel with a middle guide interval N for sorting and guiding the grains at the start ends of both. Further, the right guide interval SR is provided between the start end portion of the right-side (upper rotation side) inlet projection guide 24 and the right standing wall portion 22R. A left guide interval SL is provided between the terminal end portion of the left side (rotating direction lower side) entrance protrusion guide 24 and the left standing wall portion 22L.

  As a result, the left and right inlet protrusion guides 24 arranged with the above-mentioned intervals are used to feed the cereals that are supplied substantially evenly from the transport unit 9 over the entire width of the receiving plate part 22a at the start end. Introduce the supply guide amount while sorting. Next, the sorted cereals are guided and guided reliably and promptly into the handling chamber 11 by the scumming action of the scumming part 20b and the supply guide action of the inlet projection guide 24, and are handled from the supply port 10 through the handling port 10. 11 is supplied. Further, at this time, the left and right inlet projection guides 24 are erected with the left guide intervals SL and the right guide intervals SR, so that the cereals supplied into the intervals are surely contained in the handling chamber 11. To guide the supply.

  Therefore, this threshing part 6 prevents supply troubles such as stagnation and clogging due to the deviation of the supply cereals on the inlet receiving plate 22, like a conventional threshing part that does not include the cereal feeding mechanism 25, Even in the case of a large amount of supply cereal, even if the supply throat 10 is not clogged with cereal, smooth feeding and feeding into the handling chamber 11 is performed, so that the receiving net 21 and the handling cylinder 20 are homogeneous in the handling chamber 11. Threshing by efficient threshing can be performed efficiently. Furthermore, the corn straw feeding mechanism 25 of this embodiment is configured such that the inlet protrusion guide 24 can move up and down in accordance with the amount of corn straw supplied.

  That is, the receiving plate portion 22a has a guide groove 22b that is vertically movable by inserting the entire length of the lower side of each inlet projection guide 24 that is heavier in side view and has a middle guide interval N and a guide angle θ. It is drilled in a shape. And the front part of each entrance protrusion guide 24 is attached to the horizontal pin shaft 50 provided in the front part back side of each guide groove 22b. Thus, the receiving plate portion 22a is provided with the tip end portion of the inlet protrusion guide 24 inserted into the guide groove 22b so as to be rotatable by the pin shaft 50, and the lower side of the inlet protrusion guide 24 is attached upward by the spring 51. The protruding height position is regulated by the stopper 52 in a state where the force is supported.

  With the above-described configuration, the corn straw feeding mechanism 25 is configured such that the inlet protrusion guide 24 is urged upward by the spring 51 and stopped by the stopper 52 as shown by the solid line in FIG. Is controlled by the maximum projecting height that is in contact with the receiving plate portion 22a, while the left side movement of the sorted cereals is restricted, and the handling chamber is operated by the cooperative action of the action of the scraping portion 20b and the inlet projection guide 24 having the guide angle θ. Feeding can be performed promptly.

  Further, when the amount of supplied cereal is larger than the standard amount, the inlet protrusion guide 24 is compressed downward by a strong pressing force at the time of supplying a large amount of cereal and moved downward as shown by a two-dot chain line in FIG. . Therefore, the protruding inlet protrusion guide 24 prevents the feeding movement of the supply cereal and prevents a large feeding resistance, so that a large amount of cereal can be smoothly supplied into the handling chamber while restricting leftward movement. There are features such as being able to.

  In the illustrated example, the cereal feeding mechanism 25 has shown an attachment mode in which the inlet protrusion guide 24 is rotated up and down with the front as a fulcrum. However, the present invention is not limited to this, and the inlet protrusion guide 24 does not show the front and rear. The vertical movement can be made parallel by the vertical link mechanism or the like. Further, the inlet protrusion guide 24 may be provided in a fixed state with respect to the receiving plate portion 22a without being moved in the vertical direction.

DESCRIPTION OF SYMBOLS 1 Combine 6 Threshing part 6a Threshing machine body 6b Front machine wall 6c Rear machine wall 6d Left machine wall 6e Right machine wall 6h Side cover 6k Opening 20 Handling cylinder 21 Receiving net 21L Left receiving net 21R Right receiving net 26 Handling room frame 27 Front and rear Mounting frame 29 Pin 29a Pin hole 30 Mesh lower frame bolt 33dL Lower frame 33dR Lower frame 35 Bolt hole 37 Release screw hole 40 Release means 41 Release hole 42 Support point piece

Claims (4)

A left receiving net (left and right) divided into the left and right sides of the machine body along the outer periphery of the lower side of the handling cylinder (20) pivotally supported by the front machine wall (6b) and the rear machine wall (6c) in the handling room (11). 21L) and a right receiving net (21R) are attached to a handling frame (26) installed with a receiving net attachment interval in the front-rear direction. 21R) is attached to the right machine wall (6e) through an upper attaching / detaching means that allows the upper and lower sides to be freely inserted and removed, and the front and rear mounting frames (27) for connecting the lower portions of the front and rear chamber frames (26) in the front-rear direction. On the other hand, the lower frame (33dR) of the right receiving net (21R) and the lower frame (33dL) of the left receiving net (21L) are inserted into the bolt holes (35) drilled in both. A side cover (6h) attached to the left machine wall (6d) is detachably attached via fastening. From only an opening formed (6k), in 受網 detachable structure threshing unit removing the right 受網 (21R) Remove the left 受網 (21L),
When removing the receiving net (21), the right receiving net (21R) is forcibly moved to the left from the front and rear mounting frames (27) with the bottom frame bolt (30) of the right receiving net (21R) removed. The receiving net attaching / detaching structure of the threshing part, wherein the separating means (40) for separating is provided in the lower frame (33dR) of the right receiving net (21R).   In the vicinity of the bolt hole (35) drilled in the lower frame (33dR) of the right receiving net (21R), the detaching means (40) is a detachable screw hole (37) in which the mesh frame bolt (30) can be inserted. The receiving net attaching / detaching structure for the threshing portion according to claim 1, wherein   The release means (40) is provided with a long hole-like release hole (41) in the lower frame (33dR) of the right receiving net (21R), and has an insertion interval in the middle of the release hole (41). The receiving net attaching / detaching structure for the threshing portion according to claim 1, wherein the pin-shaped fulcrum piece (42) is fixed.   The lower frame (33dR) of the right receiving net (21R) is brought into contact with the left side surface of the front and rear mounting frame (27), and the lower frame (33dL) of the left receiving net (21L) is attached to the lower frame (33dR). The receiving net attaching / detaching structure of the threshing part according to claim 1, 2 or 3, wherein both are attached by a net underframe bolt (30) in an overlapped state.

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