JP2018102148A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine having an upper cover and a waste straw transfer device which can be easily opened.SOLUTION: A combine includes a connect mechanism 87 which can switch between the state where an upper frame 40 and a waste straw frame 50 can be integrally elevated to the same elevation limit height H1 and the state where the upper frame 40 and the waste straw frame 50 can be elevated to different elevation limit heights H1, H2.SELECTED DRAWING: Figure 31

Description

  The present invention includes a feed chain that sandwiches and conveys a harvested cereal meal, a threshing device that threshs the harvested cereal meal conveyed by the feed chain using a handling cylinder, and is connected to the rear side of the threshing apparatus, and from the feed chain. The present invention relates to a combine provided with a waste transporting device that receives the waste after the threshing process and sandwiches and transports it backward.

  As such a combine, for example, a combine described in Patent Document 1 is already known. The combine described in Patent Literature 1 includes a feed chain (in the literature, “threshing feed chain”) that holds and conveys the harvested cereal rice cake, and a handling cylinder (in the literature, “handling cylinder”) that is carried by the feed chain. A threshing device ("threshing machine" in the literature) that is threshed by the threshing device, and a waste transporting device that is connected to the rear side of the threshing device and receives the waste after the threshing treatment from the feed chain and holds it backwards ( In the literature, it is provided with “exhaust transport device”). An upper cover (in the literature, “cylinder cover”) that covers the handling cylinder from above is provided above the handling cylinder. The upper cover is configured to swing open and close with one side of the handling chamber as a fulcrum. The waste transporting device is configured to swing up and down up and down around a pivot shaft in the front-rear direction. According to such a configuration, since the upper cover and the waste transporting device are opened by swinging the upper cover and the waste transporting device upward, maintenance work can be easily performed.

JP 2012-50339 A

  In the combine described in Patent Document 1, it is necessary to open the upper cover and the waste transporting device separately, which is troublesome.

  In view of the above situation, there is a demand for a combine that can easily open the upper cover and the waste transporting device.

The feature of the present invention is that
A feed chain for nipping and conveying the harvested cereal rice cake,
A threshing device for threshing the harvested cereal trough conveyed by the feed chain with a handling cylinder;
A combiner provided continuously with the rear side of the threshing device, and a waste transporting device that receives the waste after the threshing treatment from the feed chain, and sandwiches and transports the waste to the rear,
An upper cover for covering the handling cylinder from above;
An upper frame that supports the upper cover and can swing up and down around a swing axis extending in the longitudinal direction of the machine body;
The rocking axis extends between a lowered position where the waste conveying device supports the waste conveying device and the waste conveying device conveys waste and a raised position where the waste conveying device does not convey waste. An exclusion frame that can swing up and down around,
A switching mechanism for switching between a state in which the upper frame and the evacuation frame can be integrally raised to the same rise limit height and a state in which the upper frame and the evacuation frame can be raised to different rise limit heights; There is in being provided.

  According to this characteristic configuration, the upper frame and the evacuation frame are switched to a state in which the upper frame and the evacuation frame can be integrally raised to the same rising limit height by the switching mechanism. Can be integrally raised to the same rise limit height. Accordingly, it is not necessary to open the upper cover and the waste transporting device separately, and the upper cover and the waste transporting device can be easily opened. In addition, the upper frame and the evacuation frame are raised to different rise limit heights by switching the upper frame and the evacuation frame to a state where the upper frame and the evacuation frame can be raised to different rise limit heights by the switching mechanism. Can be made. Thereby, the upper cover and the waste transporting device can be opened to suitable heights.

Furthermore, in the present invention,
A coupling mechanism for coupling the upper frame and the evacuation frame so as to be disengaged;
A first actuator that swings the upper frame upward;
It is preferable that a second actuator for swinging the evacuation frame upward is provided.

  According to this characteristic configuration, in a state where the upper frame and the evacuation frame are coupled by the coupling mechanism, the upper frame and the evacuation frame are swung upward by either one of the first actuator and the second actuator. Can be made. In addition, in a state where the connection between the upper frame and the waste frame is released, the upper frame can be swung upward by the first actuator, and the waste frame can be swung upward by the second actuator. it can. As described above, it is possible to select either one of the first actuator and the second actuator or both of them depending on whether or not the upper frame and the evacuation frame are connected.

Furthermore, in the present invention,
The upper limit height of the upper frame by the first actuator is preferably set at a position higher than the upper limit height of the evacuation frame by the second actuator.

  As for the handling cylinder, it is easier to perform the maintenance work if the upper cover is raised as high as possible. According to this characteristic configuration, the upper frame is swung upward by the first actuator to a position higher than the ascent limit height by the second actuator. It can be raised to as high a position as possible.

Furthermore, in the present invention,
The second actuator is constituted by a gas damper,
It is preferable that the upper frame is provided with a pressing portion that presses the exclusion frame from above.

  According to this characteristic configuration, the gas damper can be automatically contracted by the pressing part pressing the evacuation frame from above when the upper frame is lowered.

Furthermore, in the present invention,
It is preferable that the exhaust frame is mounted on an end of the gas damper on the exhaust frame side so as to be separated upward from the gas damper.

  According to this characteristic configuration, when the upper frame and the evacuation frame are swung upward by the first actuator in a state where the upper frame and the evacuation frame are coupled by the coupling mechanism, the evacuation frame is the maximum of the gas damper. When it rises beyond the extension length, the evacuation frame is separated upward from the gas damper. As a result, even if the evacuation frame exceeds the maximum extension length of the gas damper and rises to the upper limit of the upper frame by the first actuator, the gas damper will not be damaged.

It is a left view which shows a self-desorption type combine. It is a top view which shows a self-desorption type combine. It is a left view which shows a threshing apparatus. It is a rear view which shows the threshing apparatus in the state which lowered the upper frame. It is a rear view which shows the threshing apparatus of the state which raised the upper frame. It is a top view which shows the rear part of a threshing apparatus, and a waste conveying apparatus. It is a left view which shows the rear part of the threshing apparatus in the state which lowered | hung the upper frame and the rejection frame, and the rejection conveyance apparatus. It is a rear view which shows the structure behind the threshing apparatus in the state which lowered | hung the upper frame and the rejection frame. It is a rear view which shows the structure behind the threshing apparatus in the state which raised the upper frame and the rejection frame. It is a rear view which shows the waste conveying apparatus of the state which lowered | hung the upper frame and the waste frame. It is a rear view which shows the waste conveying apparatus of the state which raised the upper frame and the waste frame. It is a disassembled perspective view which shows the structure of the base end side of a rejection frame. It is a left view which shows the structure of the base end side of a rejection frame. It is a disassembled perspective view which shows an upper frame, a rejection frame, and a rear frame. It is a rear surface sectional view showing a connection mechanism. It is a back sectional view showing the inner side lock mechanism of an engagement state. It is a rear surface sectional view showing the inner side lock mechanism of a state of engagement release. It is a back sectional view showing the outside lock mechanism in an engagement state. It is a back sectional view showing the outer side lock mechanism of a disengaged state. It is a figure which shows an raising / lowering operation part. It is a left view which shows the rear part of a threshing apparatus in the state which raised the upper frame and the rejection frame, and the rejection conveyance apparatus. It is a left view which shows the rear part of the threshing apparatus in the state which raised the upper frame and lowered | hung the waste frame, and the waste conveying apparatus. It is left side surface sectional drawing which shows a rear upper cover. It is a perspective view which shows a rear upper cover. It is a figure which shows the raise limit height and rocking | fluctuation angle of an upper frame and a rejection frame, respectively. It is a figure which shows the raising / lowering mechanism of the upper frame which concerns on a 1st other example, and a rejection frame. In a 1st other example, it is a figure which shows the state which the upper frame and the exclusion frame rose to the same raise limit height. In a 1st other example, it is a figure which shows the state which the upper frame and the rejection frame rose to different raise limit height. It is a figure which shows the raising / lowering mechanism of the upper frame which concerns on the 2nd other example, and a rejection frame. In the second other example, it is a diagram showing a state in which the upper frame and the evacuation frame are raised to the same rise limit height. In the second other example, it is a diagram showing a state in which the upper frame and the evacuation frame are raised to different rise limit heights. It is an outer side locking mechanism which concerns on another embodiment, Comprising: It is a rear surface sectional view which shows an engagement state. It is an outer side locking mechanism which concerns on another embodiment, Comprising: It is a back surface sectional view which shows a disengagement state. It is a perspective view which shows the exclusion frame which concerns on another embodiment.

[Overall structure of the combine]
1 and 2 show a self-removing combine. The combine includes a body frame 1 and a traveling device 2 that supports the body frame 1. An operation cabin 3 is provided on the right side of the front of the aircraft. The driving cabin 3 includes a driving unit 4 on which a driver gets on, and a cabin 5 that covers the driving unit 4. An engine (not shown) is provided below the operation unit 4.

  In front of the driving cabin 3, a harvesting section 6 for harvesting crops in the field is provided. A grain storage tank 7 for storing grains is provided behind the operation cabin 3. A grain discharging device 8 for discharging the grains in the grain storage tank 7 is provided. On the left side of the machine body, a feed chain 9 is provided for nipping and conveying the harvested cereal meal. On the left side of the grain storage tank 7, a threshing device 10 is provided. The threshing device 10 threshs the harvested cereal straw conveyed by the feed chain 9 with the handling cylinder 11. On the rear side of the threshing apparatus 10, a waste transporting apparatus 12 is continuously provided. The waste transporting device 12 receives the waste after the threshing process from the feed chain 9 and sandwiches and transports it backward.

[Harvesting department]
The harvesting unit 6 is configured to have a plurality of cutting specifications (for example, six-thread cutting specifications). The harvesting unit 6 includes a plurality of (for example, seven) weeding tools 13, a plurality of (for example, six) pulling devices 14, a cutting device 15, and a conveying device 16. The weeding tool 13 weeds crops in the field. The pulling device 14 causes the weeded crop. The cutting device 15 cuts the crop that has been caused. The conveyance device 16 conveys the harvested crop toward the threshing device 10 backward.

[Threshing equipment, etc.]
As shown in FIG. 3, a handling chamber 17 is formed in the upper part of the threshing apparatus 10. A handling cylinder 11 is provided in the handling chamber 17. The handling cylinder 11 is rotatable around a rotation axis Y1 extending in the longitudinal direction of the machine body. A receiving net 18 is provided below the handling cylinder 11. A dust exhaust fan 19 for discharging dust to the outside is provided behind the handling chamber 17.

  At the bottom of the threshing device 10, a swing sorting device 20 that screens and sorts an object to be screened while moving the sorting object, a red pepper 21 that blows a sorting wind to the swing sorting device 20, a first grain (single grain) The first recovery unit 22 for recovering the cereals and the like, and the second recovery unit 23 for recovering the second cereals (grains with branches, etc.) are provided.

  The first recovery unit 22 is provided with a first screw 24 that conveys the grain of the first item to the right. At the right end of the first screw 24, a cerealing device 25 for pulverizing and conveying the first grain to the grain storage tank 7 is linked and connected.

  The second recovery unit 23 is provided with a second screw 26 that conveys the second grain to the right. A second reduction device 27 is connected to the right end of the second screw 26 to reduce the second grain to the swing sorting device 20.

  Below the rear portion of the waste transporting device 12, a waste cutting device 28 for cutting the waste transported by the waste transporting device 12 is provided. A cover 29 is provided to cover the waste cutting device 28. A switching plate 29 a is provided in a portion of the cover 29 located above the exclusion cutting device 28. The switching plate 29a can swing open and close around a swing axis extending in the left-right direction of the machine body and between a cutting position on the ascending side and a non-cutting position on the descending side. In the state where the switching plate 29a is opened (in the cutting position), the waste conveyed by the waste conveying device 12 is input to the waste cutting device 28. In a state where the switching plate 29a is closed (in the state of the non-cutting position), the waste conveyed by the waste conveying device 12 slides on the upper surface of the switching plate 29a and falls to the ground.

  As shown in FIGS. 3 to 7, wall portions 30 are provided at the front end portion and the rear end portion of the handling chamber 17, respectively. The front wall 30 constitutes the front wall of the handling chamber 17. The rear wall 30 constitutes the rear wall of the handling chamber 17. The wall portion 30 includes a movable wall 31 and a fixed wall 32. A handling cylinder 11 is rotatably supported by the movable wall 31 via a handling cylinder shaft 11a. A connecting arm 33 that connects the movable wall 31 and the fixed wall 32 is provided. The movable wall 31 is supported by the fixed wall 32 through the connecting arm 33 so as to be swingable up and down around a swing axis Y2 extending in the longitudinal direction of the machine body. A transmission shaft 34 to which the engine power is transmitted is provided across the front fixed wall 32 and the rear fixed wall 32.

  A right side portion of the threshing device 10 is constituted by a right side wall 35. The right side wall 35 extends to the rear end of the aircraft. The right side wall 35 includes an inclined portion 35a. The inclined portion 35a is inclined so that the rear side is located closer to the center of the left and right sides of the fuselage on the rear side than the rear wall portion 30.

  Front and rear frames 36L and 36R extending in the longitudinal direction of the machine body are provided on the left and right sides of the threshing device 10, respectively. The left front-rear frame 36L extends to the rear side from the rear end of the handling cylinder 11. The left front-rear frame 36L is constituted by a square pipe having a substantially square cross section. The right front-rear frame 36 </ b> R extends to the rear side of the rear end of the handling cylinder 11. The right front-rear frame 36R supports the front fixed wall 32, the rear fixed wall 32, and the right wall 35. The right front-rear frame 36R is configured by a square pipe having a substantially rectangular cross section (a horizontally long substantially rectangular shape).

[Rear frame]
A rear frame 37 is provided at the rear upper part of the machine body. The rear frame 37 is positioned on the outer side of the threshing device 10 in the left-right direction of the body. The rear frame 37 is formed in a substantially U shape that protrudes rearward from the rear portion of the threshing device 10 in a side view. The rear frame 37 is constituted by a round pipe.

[Upper cover]
An upper cover 38 is provided to cover the handling cylinder 11 from above. The upper cover 38 extends to the upper side of the rear portion of the waste transporting device 12 on the rear side of the rear end of the handling cylinder 11. An upper right cover 39 is provided on the right side of the upper cover 38. The upper right cover 39 extends to the upper side of the rear portion of the waste transporting device 12 on the rear side of the rear end of the handling cylinder 11. The upper right cover 39 is supported by the right front-rear frame 36R so that it can swing up and down around a swing axis extending in the longitudinal direction of the machine body.

[Upper frame]
The upper cover 38 is supported by the upper frame 40. The upper frame 40 can swing up and down around a transmission shaft 34 extending in the longitudinal direction of the machine body. The upper frame 40 is supported by the front wall portion 30 and the rear wall portion 30 through the transmission shaft 34 so as to be swingable up and down around the swing axis Y2. The upper frame 40 includes a pair of front and rear movable walls 31 and a left front-rear frame 36L. The left front-rear frame 36L is located on the outer side of the upper frame 40 in the left-right direction of the body.

  A hydraulic cylinder 41 that swings the upper frame 40 upward is provided. The hydraulic cylinder 41 is provided across the rear movable wall 31 and the rear fixed wall 32. The hydraulic cylinder 41 is constituted by, for example, a double-acting hydraulic cylinder. However, the hydraulic cylinder 41 may be a single-acting hydraulic cylinder.

[Handling lock mechanism]
The handling cylinder 11 together with the upper frame 40 can swing upward by a hydraulic cylinder 41. A handling cylinder lock mechanism 42 that holds the handling cylinder 11 at a threshing processing position for performing the threshing process is provided. The barrel locking mechanism 42 includes a pair of front and rear hook plates 43 and a pair of front and rear barrel hook pins 44. A hook plate 43 is supported on each of the front wall portion 30 and the rear wall portion 30 so as to be swingable about the swing axis Y3 in the longitudinal direction of the machine body. A hook portion 43 a that can be engaged with the barrel hook pin 44 is provided at the tip of the hook plate 43. By engaging the hook portion 43a with the barrel hook pin 44, the barrel 11 is held at the threshing processing position. When the hook portion 43 a is disengaged from the handling cylinder hook pin 44, the handling cylinder 11 swings upward together with the upper frame 40 by the hydraulic cylinder 41. A motor M that swings and drives the pair of front and rear hook plates 43 is supported on the rear surface of the rear wall portion 30. The motor M swings the pair of front and rear hook plates 43 to the engagement side and the engagement release side.

[Exhaust conveyor]
As shown in FIGS. 6 and 7, the waste transporting device 12 is provided in a tilted state so that the rear side is positioned on the left and right center side of the machine body. The waste transporting device 12 includes a stock transport device 45 that sandwiches and transports the stock side of the waste, and a tip transport device 46 that latches and transports the stock side of the waste. The stock transporter 45 includes a waste chain 47 with a protrusion 47 a and a waste rail 48. The waste rail 48 is disposed below the waste chain 47 so as to face the lower path of the waste chain 47. The tip transport device 46 includes a draining tip chain 49 with a tine 49a.

  The waste transport device 12 is supported by the waste frame 50. The waste transporting device 12 can be detached from the waste frame 50. The waste transporting device 12 is suspended and supported by the waste frame 50 via the front stay 51 and the rear stay 52. The waste transporting device 12 is detachably bolted to the front stay 51. The waste transporting device 12 is detachably bolted to the rear stay 52.

  A waste transport space S of the waste transport device 12 is formed behind the rear wall 30. The waste transport space S is formed so as to straddle the waste frame 50 in the longitudinal direction of the machine body. In the plan view, the waste transport space S is widened so as to be located closer to the center of the left and right sides in the transport direction at the front and rear halfway portions (location corresponding to the front end of the inclined portion 35a) of the waste transport space S.

[Belt transmission mechanism]
As shown in FIGS. 6, 8, and 9, a belt transmission mechanism 53 that transmits the power of the transmission shaft 34 to the waste transporting device 12 is provided across the transmission shaft 34 and the waste transporting device 12. . The belt transmission mechanism 53 includes a drive pulley 54, a driven pulley 55, and a transmission belt 56. The drive pulley 54 is fixed to a portion of the transmission shaft 34 that protrudes rearward from the rear fixed wall 32. The driven pulley 55 is fixed to an input shaft (not shown) of the waste transporting device 12. The transmission belt 56 is wound around the drive pulley 54 and the driven pulley 55.

[Tension clutch mechanism]
A tension clutch mechanism 57 is provided to switch the belt transmission mechanism 53 between a transmission state in which power is transmitted to the waste transporting device 12 and a cut-off state in which power transmission to the waste transporting device 12 is shut off. The tension clutch mechanism 57 includes a first tension arm 58, a first tension roller 59, a second tension arm 60, a second tension roller 61, and a tension spring 62. The first tension arm 58 is rotatably supported on the transmission shaft 34. A first tension roller 59 is rotatably supported at the tip of the first tension arm 58. The first tension roller 59 is in contact with the portion of the transmission belt 56 corresponding to the lower path from above. An attachment portion 63 to which a tension spring 62 is attached is provided at the base end portion of the first tension arm 58.

  The second tension arm 60 is fixed to the first tension arm 58 so as to be able to rotate integrally with the first tension arm 58. A second tension roller 61 is rotatably supported at the tip of the second tension arm 60. The second tension roller 61 is in contact with the portion corresponding to the upper path of the transmission belt 56 from above.

  The tension spring 62 urges the first tension arm 58 and the second tension arm 60 to swing in the tension applying direction around the swing axis Y2. An end portion of the tension spring 62 opposite to the attachment portion 63 is attached to the rod 64. The rod 64 is supported by the stay 65 so that the position can be adjusted. The stay 65 is fixed (for example, fixed by welding) to the waste frame 50 (front frame 67). By adjusting the position of the rod 64 with respect to the stay 65, the urging force of the tension spring 62 changes.

(Exclusion frame)
As shown in FIGS. 6 to 11, the evacuation frame 50 supports the front and rear portions of the evacuation transport device 12 via the front stay 51 and the rear stay 52. The exclusion frame 50 is formed in a frame shape. The rejection frame 50 includes a proximal end frame 66, a front frame 67, a rear frame 68, and a free end frame 69. A single round pipe is bent to form a front frame 67, a rear frame 68, and a free end frame 69. The front portion of the waste transporting device 12 is supported by the free end frame 69 via the front stay 51. The rear portion of the waste transporting device 12 is supported by a portion of the rear frame 68 on the left and right center side of the rear frame 68 via the rear stay 52.

  The waste frame 50 swings up and down around the swing axis Y2 between a lowered position where the waste transport device 12 transports waste and a raised position where the waste transport device 12 does not transport waste. It is possible to move. The waste frame 50 can swing up and down about a support shaft 70 extending in the longitudinal direction of the machine body. A pair of front and rear gas dampers 71 that swing the evacuation frame 50 upward are provided. The gas damper 71 is provided across the waste frame 50 (front frame 67) and the lower stay 72. An upper stay 73 to which the gas damper 71 is connected is fixed to the front frame 67 (for example, fixed by welding).

  As shown in FIGS. 12 to 14, the base end frame 66 is provided on the base end side of the rejection frame 50 and extends in the longitudinal direction of the body. The base frame 66 includes a front frame portion 74 that constitutes the front portion, a rear frame portion 75 that constitutes the rear portion, and a connecting frame portion that spans the front frame portion 74 and the rear frame portion 75. 76. A front side portion (front side frame portion 74) of the base end frame 66 is supported by the support shaft 70 via a pair of front and rear stays 77.

  A stepped portion 66 a that falls downward is formed at a position corresponding to the connecting frame portion 76 in the base end frame 66. The connecting frame portion 76 includes a groove plate 78 that opens downward, and a connecting plate 79. The channel plate 78 is provided across the lower surface of the front frame portion 74 and the lower surface of the rear frame portion 75. Inside the groove plate 78, a connecting plate 79 is provided to connect the left side wall and the right side wall of the groove plate 78.

  The front frame 67 is connected to the front end portion of the base end frame 66 and extends from the support shaft 70 side toward the outside of the body in the left-right direction of the body. The rear frame 68 is connected to the rear end portion of the base end frame 66 and extends from the support shaft 70 side toward the outside of the body in the left-right direction of the body.

  The free end frame 69 is provided on the free end side of the waste frame 50 and extends in the longitudinal direction of the machine body. The free end frame 69 is connected to the outer end of the front frame 67 in the left-right direction of the body and the end of the rear frame 68 on the outer side of the body in the left-right direction. The free end frame 69 extends along the left front-rear frame 36L in the lowered position, and is adjacent to the left front-rear frame 36L in a state of being positioned right next to the left front-rear frame 36L.

  The support shaft 70 is a shaft different from the transmission shaft 34, and is supported by a right and left front-facing frame 36 </ b> R that supports the transmission shaft 34. The transmission shaft 34 and the support shaft 70 are disposed on the same axis (oscillation axis Y2). The support shaft 70 is disposed on the front side of the midway part of the waste transporting space S (a part corresponding to the front end of the inclined part 35a). The right front-rear frame 36R extends to the rear side of the support shaft 70. The support shaft 70 is supported by the bracket 81 via a pair of front and rear stays 80. The bracket 81 is suspended from the lower surface of the right front-rear frame 36R. The stay 80 is bolted to the bracket 81. A lower stay 72 is supported on the front stay 80.

[Positioning mechanism]
As shown in FIG. 14, in the state where the waste frame 50 is in the lowered position, the free frame side (free play) of the waste frame 50 is prevented so that the waste frame 50 is not displaced (positionally displaced in the longitudinal direction of the machine body, etc.). A positioning mechanism 82 for positioning the end frame 69) on the rear frame 37 is provided. The positioning mechanism 82 includes a claw portion 83 and an insertion portion 84 into which the claw portion 83 is inserted. The claw 83 is supported by the free end frame 69 via the stay 85. The claw 83 is detachably fixed to the stay 85 with a bolt 86. The inserted portion 84 is fixed to the rear frame 37 (for example, fixed by welding). When the claw portion 83 is inserted into the inserted portion 84, the rejection frame 50 is prevented from being displaced (position displacement in the longitudinal direction of the machine body, etc.) while the rejection frame 50 is in the lowered position. 50 free end sides (free end frame 69) are positioned on the rear frame 37.

[Coupling mechanism]
As shown in FIGS. 14 and 15, a connection mechanism 87 is provided to connect the upper frame 40 (the left front-rear frame 36 </ b> L) and the evacuation frame 50 (the free end frame 69) so that the connection can be released. The connecting mechanism 87 can connect the left front-rear frame 36 </ b> L and the end portion (free end frame 69) of the reject frame 50 on the outer side of the body in the left-right direction of the body. The connecting mechanism 87 is provided across the upper part of the left front-rear frame 36L and the upper part of the free end frame 69. The connecting mechanism 87 includes an upper side fixing bracket 88, a waste side fixing bracket 89, and a connecting bracket 90. The upper side fixing bracket 88 is fixed (for example, fixed by welding) to the left front-rear frame 36L. The exclusion-side fixing bracket 89 is fixed (for example, fixed by welding) to the front portion of the free end frame 69. The connection bracket 90 is provided across the upper surface of the upper side fixing bracket 88 and the upper surface of the rejection side fixing bracket 89. The connection bracket 90 is connected to each of the upper side fixing bracket 88 and the evacuation side fixing bracket 89 by a bolt 91 so that the connection can be released. That is, the connection mechanism 87 can be disconnected from the left front-rear frame 36L and the free end frame 69.

[Inner lock mechanism]
As shown in FIG. 16 and FIG. 17, the inner side where the base end side (base end frame 66) of the rejecting frame 50 is held in the right front-rear frame 36 </ b> R in a state where the rejecting frame 50 is in the lowered position. A lock mechanism 92 is provided. The inner lock mechanism 92 holds the position of the rear side portion of the proximal end frame 66 in the right front-rear frame 36R. The inner lock mechanism 92 includes an inner hook 93 and an inner hook pin 94.

  The inner hook 93 is detachably fixed to the right side wall of the connecting frame portion 76 (groove plate 78) of the base end frame 66 by a bolt 95. The inner hook 93 includes a pair of front and rear hook portions 93a. A connecting plate 93b for connecting the hook part 93a on the front side and the hook part 93a on the rear side is provided.

  The inner hook pin 94 is supported by the right front-rear frame 36R via the first stay 96 and the second stay 97. The first stay 96 is fixed (for example, fixed by welding) to the right front-rear frame 36R. The second stay 97 is detachably fixed to the first stay 96 with bolts 98. The inner hook pin 94 is provided across the front wall portion and the rear wall portion of the second stay 97.

[Operation of inner locking mechanism]
The inner lock mechanism 92 follows the swinging of the rejection frame 50 toward the lowered position, engages the right front-rear frame 36R, and swings the rejection frame 50 toward the raised position. Following this, the engagement with the right front-rear frame 36R is released.

  More specifically, the inner hook 93 engages with the inner hook pin 94 following the swinging of the rejection frame 50 toward the lowered position. The engagement of the inner hook 93 with the inner hook pin 94 is released following the swinging of the evacuation frame 50 toward the raised position. Here, when the waste frame 50 swings from the lowered position to the raised position side, the inner hook pin 94 enters the stepped portion 66a. Thus, the base frame 66 does not interfere with the inner hook pin 94 when the evacuation frame 50 swings up and down.

[Outside lock mechanism]
As shown in FIGS. 18 and 19, the outer lock mechanism 100 that holds the free end side (free end frame 69) of the waste frame 50 in the rear frame 37 in a state where the waste frame 50 is located at the lowered position. Is provided. The outer lock mechanism 100 includes an outer hook 101 and an outer hook pin 102. The outer hook 101 includes a base portion 101a and a hook portion 101b. The hook portion 101b is detachably fixed to the base portion 101a with a bolt 103.

  The outer hook pin 102 is arranged at a position slightly apart from the rear frame 37 on the left side of the rear frame 37. The outer hook pin 102 is supported by the rear frame 37 via the first stay 104 and the second stay 105 (see FIG. 14).

  The outer lock mechanism 100 holds the rear portion of the left front-rear frame 36L in the rear frame 37. The left front-rear frame 36 </ b> L and the rear frame 37 are connected to each other by the outer lock mechanism 100 so that the connection can be released. In a state where the left front-rear frame 36L and the rear frame 37 are connected by the outer lock mechanism 100, the rear frame 37 is positioned right next to the left front-rear frame 36L. That is, the rear frame 37 is provided with a portion adjacent to the left front-rear frame 36L in a state of being connected to the left front-rear frame 36L by the outer lock mechanism 100. In a state where the left front-rear frame 36L and the rear frame 37 are connected by the outer lock mechanism 100, the free end frame 69 is in contact with the rear frame 37 in the vertical direction. Specifically, the free end frame 69 is in contact with the rear frame 37 from above with the left front-rear frame 36 </ b> L and the rear frame 37 being connected by the outer lock mechanism 100. That is, the free end frame 69 is sandwiched in the vertical direction between the rear frame 37 and the coupling mechanism 87 (exhaust side fixing bracket 89) (sandwich structure).

[Link mechanism]
As shown in FIGS. 6 to 9, a link mechanism 106 that interlocks and connects the barrel locking mechanism 42 (rear hook plate 43) and the outer locking mechanism 100 (outer hook 101) is provided. The link mechanism 106 includes a first link arm 107, a second link arm 108, and a link rod 109. The first link arm 107 is connected to the proximal end portion of the rear hook plate 43 so as to be relatively swingable. The first link arm 107 and the second link arm 108 are coupled so as to be relatively swingable.

  The link rod 109 is supported on the left front-rear frame 36L via the front stay 110 and the rear stay 111. The link rod 109 is rotatably supported by the front stay 110 and the rear stay 111. A second link arm 108 is connected to the front end portion of the link rod 109 so as not to be relatively rockable. The outer hook 101 is connected to the rear end portion of the link rod 109 so as not to be relatively rockable.

(Elevating operation section)
As shown in FIG. 20, an elevating operation unit 112 for elevating operation is provided in the operation unit 4. The elevating operation unit 112 includes a power switch 113, an up switch 114, and a down switch 115. When performing the raising operation, the raising switch 114 and the power switch 113 are simultaneously pushed. The raising operation is performed only while the raising switch 114 and the power switch 113 are pressed simultaneously. When the lowering operation is performed, the lowering switch 115 and the power switch 113 are simultaneously pressed. The lowering operation is performed only while the lowering switch 115 and the power switch 113 are pressed simultaneously. In addition to the operation part 4 (or instead of the operation part 4), the raising / lowering operation part 112 may be provided in the left side part of the threshing apparatus 10, for example so that an operator can operate from the outside of an apparatus.

[Rear upper cover]
As shown in FIGS. 2, 6, 23, and 24, a rear upper cover 116 that covers the waste transporting device 12 from the rear upper side is provided. The rear upper cover 116 includes a main body portion 117 and an upper portion 118.

  The main body 117 has a notch 117a that opens forward. The notch 117a is formed in a horizontally long substantially trapezoidal shape in plan view. The length of the front edge of the notch 117a (length in the left-right direction of the body) is longer than the length of the rear edge (length in the left-right direction of the body) of the notch 117a.

  The upper portion 118 is located above the rear portion of the waste transporting device 12 in the rear upper cover 116. The upper portion 118 overlaps with the rear portion of the waste transporting device 12 in plan view. The upper portion 118 is provided in the notch 117a so as to close the notch 117a. The upper portion 118 is supported by the main body 117 so as to be able to swing up and down via a support shaft 119 extending in the left-right direction of the body on the rear side of the upper portion 118. The upper portion 118 swings up and down around a support shaft 119 extending in the left-right direction of the airframe on the rear side of the upper portion 118, between a closed position for closing the waste conveying space S and an open position for opening the waste conveying space S. Is possible.

[Interlocking mechanism]
An interlocking mechanism 120 that swings the upper portion 118 toward the open position side is provided in conjunction with the swinging frame 50 swinging toward the raised position side. The interlocking mechanism 120 includes an arm 121 and a roller 122. The arm 121 extends from the rejection frame 50 (rear frame 68) to a lower portion of the upper portion 118. A roller 122 that can contact the contact portion 126c from below is provided at the tip of the arm 121. The roller 122 is rotatable around a rotation axis extending in the longitudinal direction of the machine body. The arm 121 is detachably fixed to the arm stay 123 by a bolt 124. The arm stay 123 is fixed to the rear frame 68 (for example, fixed by welding).

  A main body stay 125 is bolted to the inner surface of the main body 117. An upper part stay 126 is fixed (for example, fixed by welding) to the inner surface of the upper part 118. A support shaft 119 is provided across the main body stay 125 and the upper partial stay 126. The upper partial stay 126 includes a pair of left and right support portions 126a that support the support shaft 119, an attachment portion 126b to which the spring 127 is attached, and a contact portion 126c with which the roller 122 can contact. The contact portion 126 c is configured by a plate-like portion that extends in the left-right direction of the body along the inner surface of the upper portion 118.

  A spring 127 is provided to urge the upper portion 118 so as to swing toward the closed position. The spring 127 is provided across the upper portion 118 and the main body 117. An end portion on the upper portion 118 side of the spring 127 is attached to the attachment portion 126b. The main body 117 is provided with an attachment portion 128 to which the spring 127 is attached. The end of the spring 127 on the main body 117 side is attached to the attachment portion 128.

  The upper portion 118 is formed in a slightly larger shape than the notch 117a in plan view. The edge of the upper portion 118 abuts against the edge of the main body 117 corresponding to the notch 117a from above, so that the upper portion 118 is prevented from swinging below the closed position. . That is, a blocking portion 129 that prevents the upper portion 118 from swinging below the closed position by the edge portion of the upper portion 118 and the edge portion of the main body portion 117 corresponding to the notch portion 117a is configured. ing.

[Up and down movement of upper frame and evacuation frame]
As shown in FIGS. 8 and 9, when the operator performs a lifting operation using the lifting operation unit 112, the pair of front and rear hook plates 43 are swung to the disengagement side by the motor M. As a result, the hook plate 43 (hook portion 43a) is disengaged from the barrel hook pin 44. Then, the outer hook 101 is swung to the disengagement side in conjunction with the swing of the rear hook plate 43 to the disengagement side.

  When the upper frame 40 and the evacuation frame 50 are connected by the connecting mechanism 87, as shown in FIGS. 9 and 21, when the engagement of the outer hook 101 with the outer hook pin 102 is released, The frame 40 and the evacuation frame 50 are swung upward by the hydraulic cylinder 41. At that time, the handling cylinder 11, the belt transmission mechanism 53, and the tension clutch mechanism 57 together with the upper frame 40 and the evacuation frame 50 are also swung upward by the hydraulic cylinder 41. Therefore, the positional relationship between the pulleys (drive pulley 54 and driven pulley 55) in the belt transmission mechanism 53 does not change.

  The engagement of the inner hook 93 with the inner hook pin 94 is released following the swinging of the evacuation frame 50 toward the raised position. Thus, the upper frame 40 and the evacuation frame 50 are integrally raised to the same rising limit height.

  Further, when the evacuation frame 50 swings to the raised position side, the arm 121 pushes up the upper portion 118 via the roller 122 in conjunction with the swaying frame 50 swinging to the raised position side. Thus, the upper portion 118 swings to the open position side in conjunction with the swinging frame 50 swinging to the raised position side.

  When the operator performs a lowering operation using the elevating operation unit 112, the upper frame 40 and the evacuation frame 50 are swung downward as the hydraulic cylinder 41 contracts. Then, the inner hook 93 engages with the inner hook pin 94 following the swinging of the evacuation frame 50 toward the lowered position side.

  When the upper frame 40 and the evacuation frame 50 are positioned at the lowered position, the pair of front and rear hook plates 43 are swung to the engagement side by the motor M. As a result, the hook plate 43 (hook portion 43 a) engages with the handle cylinder hook pin 44. The outer hook 101 is swung to the engagement side in conjunction with the swing of the rear hook plate 43 to the engagement side.

  On the other hand, in the state where the connection between the upper frame 40 and the evacuation frame 50 is released (the connection release state), as shown in FIG. 22, when the engagement of the outer hook 101 with the outer hook pin 102 is released, Of the frame 40 and the evacuation frame 50, only the upper frame 40 is swung upward by the hydraulic cylinder 41. At this time, the handling cylinder 11 and the tension clutch mechanism 57 together with the upper frame 40 are also swung upward by the hydraulic cylinder 41. When only the upper frame 40 of the upper frame 40 and the evacuation frame 50 is swung upward, it is necessary to remove the transmission belt 56 from the drive pulley 54 in advance. Thus, only the upper frame 40 of the upper frame 40 and the evacuation frame 50 is raised to the rising limit height.

  Then, by swinging the waste frame 50 upward by the gas damper 71, the waste frame 50 is raised to the above-mentioned rise limit height. Note that, as described above, the waste transporting device 12 can be detached from the waste transporting frame 50. However, if the waste transporting device 12 is detached from the waste transporting device 12, only the waste transporting frame 50 is swung upward. be able to.

  Next, the upper frame 40 and the evacuation frame 50 can be integrally raised to the same ascent limit height (hereinafter referred to as “first mode”), and the upper frame 40 and the evacuation frame 50 have different ascent limits. An embodiment capable of switching to a state where the height can be raised (hereinafter referred to as “second mode”) will be described with reference to FIGS. 25 to 31.

  As shown in FIG. 25, in the first mode, the upper limit height of the upper frame 40 and the upper limit height of the waste frame 50 are set to the same upper limit height H1. The swing angle of the upper frame 40 and the swing angle of the reject frame 50 are set to the same swing angle α.

  In the second mode, the upper limit height of the upper frame 40 and the upper limit height of the evacuation frame 50 are set to different rising limit heights. Specifically, the upper limit height of the upper frame 40 is set to the upper limit height H1, and the upper limit height of the evacuation frame 50 is lower than the upper limit height H1 (ascent). The limit height H2) is set. That is, the upper limit height H1 of the upper frame 40 by the hydraulic cylinder 41 is set to a position higher than the upper limit height H2 of the evacuation frame 50 by the gas damper 71.

  Further, the swing angle of the upper frame 40 and the swing angle of the rejection frame 50 are set to different swing angles. Specifically, the swing angle of the upper frame 40 is set to the swing angle α, and the swing angle of the rejection frame 50 is smaller than the swing angle α (swing angle β). Is set to

  In the example shown in FIGS. 26 to 28, as an elevating mechanism for the upper frame 40 and the waste frame 50, a hydraulic cylinder 41 that swings the upper frame 40 upward, and a gas damper 71 that swings the waste frame 50 upward, And a connecting mechanism 87 for connecting the upper frame 40 and the evacuation frame 50 so as to be disengaged. In the example shown in FIGS. 26 to 28, the coupling mechanism 87 functions as a switching mechanism for switching between the first mode and the second mode. FIG. 26 shows a state in which the upper frame 40 and the evacuation frame 50 are located at the lowered position.

  As shown in FIG. 27, in the first mode, the upper frame 40 and the waste frame 50 are connected by a connecting mechanism 87 (connected state). In this connected state, the upper frame 40 and the evacuation frame 50 are swung upward by the hydraulic cylinder 41 so that the upper frame 40 and the evacuation frame 50 ascend integrally to the same rising limit height H1.

  In this case, the connection between the gas damper 71 and the exhaust frame 50 is released in advance, so that the exhaust frame 50 exceeds the maximum extension length of the gas damper 71 (corresponding to the rising limit height H2). Even if it rises to the rise limit height H1, the gas damper 71 will not be damaged.

  As shown in FIG. 28, in the second mode, the connection between the upper frame 40 and the evacuation frame 50 is released (the connection is released). In this disconnected state, the upper frame 40 is swung upward by the hydraulic cylinder 41 so that the upper frame 40 rises to the ascent limit height H1.

  Then, the evacuation frame 50 can be swung upward by the gas damper 71 so that the evacuation frame 50 rises to the upper limit height H2.

  Further, as shown in FIGS. 29 to 31, the upper frame 40 is provided with a pressing portion 40a for pressing the evacuation frame 50 from above, and the evacuation frame 50 is disposed at the end of the gas damper 71 on the evacuation frame 50 side. May be mounted on the gas damper 71 so as to be separated upward. In the example shown in FIGS. 29 to 31, the coupling mechanism 87 functions as a switching mechanism that switches between the first mode and the second mode. FIG. 29 shows a state in which the upper frame 40 and the evacuation frame 50 are located at the lowered position.

  As shown in FIG. 30, in the first mode, the upper frame 40 and the waste frame 50 are connected by a connecting mechanism 87 (connected state). In this connected state, the upper frame 40 and the evacuation frame 50 are swung upward by the hydraulic cylinder 41 so that the upper frame 40 and the evacuation frame 50 ascend integrally to the same rising limit height H1.

  At this time, as described above, the exhaust frame 50 is placed on the end of the gas damper 71 on the exhaust frame 50 side so as to be separated upward from the gas damper 71. When the lift exceeds the maximum extension length 71 (corresponding to the rise limit height H2), the evacuation frame 50 is separated upward from the gas damper 71. Thereby, even if the evacuation frame 50 exceeds the maximum extension length of the gas damper 71 (corresponding to the ascent limit height H2) and rises to the ascent limit height H1, the gas damper 71 will not be damaged.

  As shown in FIG. 31, in the second mode, the connection between the upper frame 40 and the evacuation frame 50 is released (the connection is released). In this disconnected state, the upper frame 40 is swung upward by the hydraulic cylinder 41 so that the upper frame 40 rises to the ascent limit height H1.

  Then, the evacuation frame 50 can be swung upward by the gas damper 71 so that the evacuation frame 50 rises to the rising limit height H2.

  Thereafter, when the upper frame 40 is lowered, the holding portion 40a presses the evacuation frame 50 from above, so that the evacuation frame 50 is lowered together with the upper frame 40 as the gas damper 71 is automatically contracted. .

  In the examples shown in FIGS. 26 to 28 and the examples shown in FIGS. 29 to 30, a lock mechanism (not shown) that holds the evacuation frame 50 on the rear frame 37 may be provided. Thereby, in the second mode, the exclusion frame 50 can be held at the rear frame 37 by the lock mechanism so that the exclusion frame 50 does not rise even when the upper frame 40 rises.

  Although not shown, an electric actuator (not shown) is adopted as an actuator that swings the upper frame 40 up and down instead of the hydraulic cylinder 41, and the evacuation frame 50 is moved up and down instead of the gas damper 71. An electric actuator (not shown) may be adopted as the actuator to be moved. The electric actuator may be either an electric motor or an electric cylinder. In this example, a control device (not shown) that controls the electric actuator is provided with a function of switching between the first mode and the second mode.

  In this example, in the second mode, when the upper frame 40 and the evacuation frame 50 are raised to the ascent limit height H2 by the operator performing the ascending operation using the elevating operation unit 112, the upper frame 40 and the evacuation frame 50 are used. Temporarily stops at the rising limit height H2. After that, when the operator performs the ascending operation by the elevating operation unit 112 again, only the upper frame 40 rises to the ascent limit height H1.

  Moreover, in this example, the raising / lowering operation part 112 may be comprised as follows. That is, in the first mode, an elevating operation unit (elevating switch, descending switch) for elevating the upper frame 40 and the evacuation frame 50, and an elevating operation unit (elevating switch, elevating switch, elevating operation for the upper frame 40 in the second mode). A lowering switch) and an elevating operation unit (elevating switch, lowering switch) for raising and lowering the evacuation frame 50 in the second mode.

[Another embodiment]
(1) In the above embodiment, the outer lock mechanism 100 is employed. Instead, the outer lock mechanism 200 may be employed.

  As shown in FIGS. 32 and 33, the outer lock mechanism 200 includes an outer hook 201, an outer hook arm 202, an outer hook spring 203, and an outer hook pin 102. The outer hook 201 is swingably supported on the rear surface portion of the rear stay 111 via the support shaft 204. An outer hook spring 203 that urges the outer hook 201 to swing to the engagement side is provided across the outer hook 201 and the rear surface portion of the rear stay 111. The outer hook arm 202 is fixed to the rear end portion of the link rod 109. An opening 201 a is formed in the outer hook 201. The outer hook arm 202 is provided with a pin 202a protruding rearward. The pin 202a is located in the opening 201a. According to such a configuration, the outer hook pin 102 swings to the engagement side when the outer hook arm 202 is engaged with the opening 201a via the pin 202a. At that time, the outer hook 201 can be quickly engaged with the outer hook pin 102 by the urging force of the outer hook spring 203.

(2) In the above-described embodiment, the step portion 66 a is formed in the base end frame 66. However, as shown in FIG. 34, a portion corresponding to the stepped portion 66a may not be formed in the proximal end frame 66. In this case, since the vertical position of the inner hook 93 is higher than that in the above embodiment, the vertical position of the inner hook pin 94 may be higher than that in the above embodiment.

(3) In the above embodiment, if the switching plate 29a is in the open state (cutting position state), the switching frame 29a is switched to the closed state (non-cutting position state), and then the evacuation frame 50 is raised. You may make it do. Further, in a state where the evacuation frame 50 is raised, the switching plate 29a may not be switched to the opened state (the state of the cutting position).

(4) In the above embodiment, the hydraulic cylinder 41 and the gas damper 71 are provided. However, instead of this, only the hydraulic cylinder 41 may be provided.

(5) In the said embodiment, the connection mechanism 87 is a bolt type (bolt 91) connection structure. However, instead of this, the connection mechanism 87 may be a one-touch type connection structure using a lever or the like.

  The present invention can be used not only for a combine with a cabin but also for a combine without a cabin.

DESCRIPTION OF SYMBOLS 9 Feed chain 10 Threshing apparatus 11 Handling cylinder 12 Exclusion conveyance apparatus 38 Upper cover 40 Upper frame 40a Holding part 41 Hydraulic cylinder (1st actuator)
50 Exhaust frame 71 Gas damper (second actuator)
87 Connection mechanism (switching mechanism, connection mechanism)
H1 Ascent limit height H2 Ascent limit height Y2 Swing axis

Claims (5)

A feed chain for nipping and conveying the harvested cereal rice cake,
A threshing device for threshing the harvested cereal trough conveyed by the feed chain with a handling cylinder;
A combiner provided continuously with the rear side of the threshing device, and a waste transporting device that receives the waste after the threshing treatment from the feed chain, and sandwiches and transports the waste to the rear,
An upper cover for covering the handling cylinder from above;
An upper frame that supports the upper cover and can swing up and down around a swing axis extending in the longitudinal direction of the machine body;
The rocking axis extends between a lowered position where the waste conveying device supports the waste conveying device and the waste conveying device conveys waste and a raised position where the waste conveying device does not convey waste. An exclusion frame that can swing up and down around,
A switching mechanism for switching between a state in which the upper frame and the evacuation frame can be integrally raised to the same rise limit height and a state in which the upper frame and the evacuation frame can be raised to different rise limit heights; Combine that is equipped with. A coupling mechanism for coupling the upper frame and the evacuation frame so as to be disengaged;
A first actuator that swings the upper frame upward;
The combine according to claim 1, further comprising: a second actuator that swings the waste frame upward.   The combine according to claim 2, wherein the upper limit height of the upper frame by the first actuator is set at a position higher than the upper limit height of the evacuation frame by the second actuator. The second actuator is constituted by a gas damper,
The combine according to claim 3, wherein the upper frame is provided with a pressing portion that presses the exclusion frame from above.   The combine according to claim 4, wherein the exhaust frame is placed on an end of the gas damper on the exhaust frame side so as to be separated upward from the gas damper.

Images