JP2654367B2 - Threshing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing apparatus mounted on a self-removing type combine, and more particularly to a threshing apparatus having a feature in a structure for maintenance.

[0002]

2. Description of the Related Art Conventionally, as a threshing apparatus with improved maintainability, for example, as shown in Japanese Utility Model Application Laid-Open No. 59-150231, an upper handling chamber case rotatably supporting a handling cylinder can be vertically swung and opened and closed. It is connected to the lower threshing case side, and the upper handling chamber case is closed and fixed to the lower threshing case side using hook-type locking means provided on the front and rear sides of the handling room. It has been proposed that the handling room is greatly opened by raising the room case to perform maintenance such as cleaning and inspection of the handling room,
A hook-type locking means for closing and fixing the upper handling room case to the lower threshing case side is provided so that each of the locking members is engaged with a hook-shaped locking member slidably provided on the upper handling room case side. A locking member fixed to the lower threshing case side,
The structure includes an operation lever protruding outside the upper handling chamber case and separately pivotally supported, and a link member pivotally connecting the operation lever and the lock member.

[0003]

However, the proposed locking means having the above-mentioned structure requires a link member to operate a hook-shaped locking member which engages at a position where the locking member has entered the inside of the case from outside the case. Because of the structure interposed, the pivot connection part of the lock member and the link member,
Backlash and deformation are likely to occur at the pivotal connection part between the link member and the operation lever, etc., and the upper handling chamber case acting on the hook type locking means before and after the handling chamber is opened in the upward direction. There is room for improvement in terms of vibration, rattling, durability, and the like, because the upper handling room case is not firmly fixed due to a load or a load in which the upper handling room case shifts in the front-rear direction. In addition, there is a possibility that each hook-shaped lock member at the front and rear lock portions may not properly engage with the corresponding locking member due to deformation or torsion,
When the lock is released, it is difficult to reliably transmit the operation force of the operation lever to the lock member, and the operability is reduced.

The present invention has been made in view of such a point, and by improving the opening and closing operation structure on the upper threshing case side and the fixing structure on the lower threshing case side,
It is an object to securely close and fix the upper threshing case side to the lower threshing case side and to enhance the operability of unlocking.

[0005]

The present invention is characterized in that a threshing case is divided into an upper threshing case side and a lower threshing case side by a dividing line, and an upper threshing case side rotatably supporting a handling cylinder is provided. The upper threshing case side is connected to the lower threshing case side so as to be freely swingable up and down, and the upper threshing case side is lifted together with the handling cylinder to open the handling chamber. The front position of the handling chamber and the rear part of the handling chamber A lock means provided with a lock member for engaging and fixing the upper threshing case side to the lower threshing case side at the closed position at the position and the threshing and discharging straw conveying part side position at the rear of the handling chamber; A hook-shaped lock member provided so as to be swingable around a fulcrum provided near the dividing line with respect to the handle on the upper threshing case side, and each lock member at the position and the rear position are engaged with each other. A hook provided on the lower threshing case side so that A member and an operation lever integrated with each lock member and extending toward the port side, and projecting the operation lever to the outside of the upper threshing case, so that each of the locking means is provided with the upper threshing. Along with the closing operation on the case side, the locking member is configured to engage with a corresponding locking member in a self-locking structure, and the upper threshing case side is raised between the upper threshing case side and the lower threshing case side. A retractable rod for biasing is provided, and with the closing operation on the upper threshing case side, a tapered front-rear position regulating member is inserted into and engaged with a corresponding front-rear position regulating member to move forward and backward on the upper threshing case side. This is characterized in that a positioning engagement means for performing positioning in the direction is provided.

[0006]

According to the above construction, when the upper threshing case side is lowered and closed, the three positions of the front position of the handling room, the rear position of the handling room, and the threshing discharge straw transport unit side position behind the handling room. In each of the positions, the hook-shaped locking member of each locking means engages with the corresponding locking member to perform the locking operation, and the upper threshing case side is securely and firmly closed and fixed.
At this time, since the upper threshing case is slowly lowered against the upward urging force of the telescopic rod, the automatic locking by each locking means is executed with less impact. When performing maintenance by opening the upper threshing case side, by operating the operation lever of each lock means from outside the case, the lock member located inside the case is integrated with this lock member, and An operation lever that is swingably operated around a fulcrum provided near the dividing line can be directly rocked and unlocked. Also, by providing positioning engagement means for positioning in the front-rear direction,
When the upper threshing case side is closed, the positioning engagement means performs positioning in the front-rear direction of the upper threshing case side with respect to the lower threshing case side, and in this state where the front-rear position is regulated, the handling room In the front position, the rear position, and the threshing and discharging straw transporting section behind the handling room,
The locking member of each locking means keeps the engagement locking state with the corresponding locking member. Since one of the front and rear position regulating members of the positioning engagement means has a tapered shape, the insertion engagement with the other front and rear position regulating member is smoothly performed. When performing maintenance by opening the upper threshing case side,
By operating the operation lever of each locking means from outside the case, the lock member located inside the case can be directly rocked to unlock. At this time, since the telescopic rod acts, the upper threshing case side can be raised and opened with a relatively small force.

[0007]

According to the present invention, the following effects can be obtained. [1] The upper threshing case side is closed and fixed to the lower threshing case side by locking members provided before and after the handling room and on the threshing and discharging straw transport unit side, so that the upper threshing case side is reliably kept in a state in which vibration and backlash are suppressed. Can be fixed. [2] In the locking means provided at the front position of the handling room and at the rear position of the handling room, the locking member located inside the case and the operation lever projecting outside the case are integrated to swing one point. Since it is configured as a member, compared to a structure in which the lock member and the operating lever are pivotally connected via a link member, the structure can be made simple and highly durable so that deformation and the like are unlikely to occur. The side can be firmly closed and fixed with less occurrence of vibration, rattling and the like. [3] Moreover, the lock member and the operation lever, which are provided so as to be swingable about the fulcrum near the dividing line with respect to the handle, are integrated with each other. The operating lever is configured to be longer than the locking member, and the operating force applied to the operating lever is increased to transmit the operating force to the locking member, so that the locking member and the locking member are firmly engaged. However, at the time of unlocking, the lock member can be swung and separated from the locking member without requiring a large force, and the operability of unlocking is also high. [4] The upper threshing case side is positioned in the front-rear direction with the lower threshing case side by the positioning engagement means, and the upper threshing case side is closed to the lower threshing case side by hook-type locking means provided in front and behind the handling chamber. Since the upper threshing case is fixed, the upper threshing case side can be securely fixed in a state in which vibration and backlash are suppressed, and the positioning engagement means is configured such that one tapered front-rear position control member is connected to the other front-rear position control member. By inserting and engaging the two, the self-locking function of the hook-type locking means can be utilized, and in conjunction with the hook-type self-locking means, the opening and closing operation of the upper threshing case can be easily performed. The operability and operability are good. [5] One of the front and rear position regulating members of the positioning engagement means is tapered so that the upper threshing case is slowly lowered against the upward urging force of the telescopic rod, so that the tapered front and rear position regulation is performed. The member can be smoothly and reliably engaged with the other front / rear position regulating member. [6] The rational combination of a self-locking type locking means using a hook-shaped locking member integrated with an operation lever, a positioning engagement means by an insertion type front / rear position regulating member, and a telescopic rod makes it relatively possible. With a simple structure, the upper threshing case side can be easily opened and closed, and can be securely closed and fixed, so that a threshing device excellent in maintenance and handling can be constructed.

[0008]

Next, an embodiment will be described. As shown in FIG. 12, the harvested culm is automatically supplied to the handling room 2 by the threshing feed chain 1 and threshed by the rotating handling drum 3, and the threshing waste straw is automatically handled by the threshing feed chain 1. The threshing unit is configured so as to be carried out from the thruster 2, and the threshing waste straw is automatically inherited from the threshing feed chain 1 by the waste straw transport chain 4, and is taken out to the rear of the machine while being moved to the tip side in a sideways posture. A threshing and discharging straw transporting section 5 for dropping and discharging is provided behind the handling chamber 2. From receiving room 2 to receiving network 6
Of the thresh-treated product dropped and supplied through the hopper and the thresh-processed product dropped and supplied from the handling chamber 2 through the dust discharge port 7 are subjected to specific gravity sorting by a drive rocking sorter 8 and sorting wind supplied by Karamin 9. The dust is separated into particles and dust, and the dust is discharged to the outside of the machine by the transfer action by the separation wind and the dust discharging fan 10, and the threshing product from the dust discharging port 7 is released by the driving rotating body 11. A sorting unit, and a sorting device 8
The first screw conveyor 12 that carries out the first processed material dropped from the outside and the second screw conveyor 13 that carries out the second processed material dropped from the sorting device 8 to one side of the machine. It is provided at the bottom of the part. The processed material from the second screw conveyor 13 is configured to be reprocessed by the slower-type transfer device 14 having the reprocessing rotary member 14a at a position in the middle of the transfer and returned to the upstream side of the sorting device 8,
Thus, a threshing device for the combine is configured.

As shown in FIGS. 1 to 4, a front wall portion 15a and a rear wall portion 15b to which the handle drum 3 is attached at a part of the front wall and the rear wall forming the handle room 2, and the handle room 2 , A threshing waste transporting chain 4, and an upper threshing case 15 provided with a ceiling wall 15 c and a part 15 d of a handling side lateral wall forming a draining straw transporting portion 5, and a lower threshing provided with a sorting portion and the like. The case 16 side is connected to the cereal stalk supply port 2a and the
b, a threshing case is constructed so that the outlets 2c and threshing outlets 5a of the threshing and discharging straw transporting section 5 and the dividing lines L1 and L2 connected thereto can be divided as division points.

The upper threshing case 15 is attached to the lower threshing case 16 so as to swing up and down through a pivot shaft 17 positioned on the opposite side of the handle 2b with respect to the handle drum 3, and an opening / closing handle 18 is provided. By the swinging operation, the pivot shaft 17 is opened and closed up and down around the axis P2 of the pivot shaft 17, which is parallel or almost parallel to the handling cylinder rotation axis P1.

When the upper threshing case 15 is opened, a pair of front and rear telescopic bars 19, 2 using gas springs, which are separately mounted on the front wall 15a and the rear wall 15b, respectively.
0 raises the upper threshing case 15 side by self-extension force to reduce the manual operation force, and when opened, the upper threshing case 1
It is configured to prevent the 5 side from dropping rapidly. At the time of the lowering operation of the upper threshing case 15, the gas springs 19 and 20 are shortened due to the operation force so that the upper threshing case 15 can be lowered, and the upper threshing case 15 is lowered to the closed position. 11, the first lock member 21, the second lock member 22, and the third lock member of the hook type locking means which are distributed and arranged at three places in the front-rear direction on the upper threshing case 15 side as shown in FIG. Each of 23 has a so-called self-locking structure in which the upper threshing case 15 side is automatically closed and locked with the lower threshing case 16 side.

That is, the first lock member 21
As shown in FIG. 2, a pivot is pivotally attached to the handle 2 b outside the front wall portion 15 a around a fulcrum P 3 provided near the dividing line L 1, and is pivotally attached to the distal end thereof. The lock member 21 is formed in a hook shape having an inclined cam surface 21a and an engagement recess 21b following the inclined cam surface 21a, and the first end of the lock member 21 is sufficiently longer than the length of the lock member 21.
The operation lever 25 is directly connected so as to be able to swing integrally with the handle 22a.
It extends greatly toward the side. A locking state in which the engaging recess 21b of the lock member 21 is engaged with a roller-type locking member 24 provided on the lower threshing case 16 side to connect and fix the front wall portion 15a to the lower threshing case 16 side. The lock is released by a lock urging spring 26 that is actuated on a first operation lever 25 that swings integrally with the first lock member 21 so as to be switched to an unlocked state that is disengaged downward from the locking member 24. The first operation lever 25 is configured to be operated to the unlocking side by an artificial swing operation while gripping the handle 25a of the first operation lever 25.

The second lock member 22 is shown in FIGS.
As shown in FIG. 7, the pivoting member is pivotally mounted on the handle 2b outside the rear wall portion 15b so as to be vertically swingable about a fulcrum P4 provided near the dividing line L2. A second operating lever 28 which is formed in a hook shape having an engagement concave portion 22b followed by an engagement concave portion 22b, and which is sufficiently longer than the length of the lock member 22, is provided at the base end of the lock member 22. It is directly connected so as to be able to swing integrally, and largely extends toward the handling port 22a. A locking state in which the engaging recess 22b of the lock member 22 is engaged with a roller-type locking member 27 provided on the lower threshing case 16 to connect and fix the rear wall 15b to the lower threshing case 16 is provided. , Locking member 27
So that it switches to the unlocked state,
Further, a lock urging spring 29 acting on a second operation lever 28 swinging integrally with the second lock member 22 is provided.
Thus, the handle portion 28a of the second operation lever 28 is gripped to be operated toward the lock release side by an artificial swing operation.

As shown in FIGS. 6 to 8, the third lock member 23 is located at the free end side of the upper threshing case 15 side of the upper threshing case frame 30 and at the rear end side of the fuselage with respect to the rear wall portion 15b. The lower threshing case 1 is pivotally attached to the rear end portion A and pivoted right and left around the pivot axis P5.
The upper threshing case frame 30 is engaged with the locking member 32 of the connecting frame 31 provided on the
And a lock state in which the rear end side of the upper threshing case 15 is connected to and fixed to the lower threshing case 16 side, and a lock release state in which the locking member 32 is disengaged laterally outside the body. It is.

As shown in FIGS. 5 to 7, a rotation interlocking shaft 33 is also used as a pivot shaft of the third lock member 23, and is attached to the front end of the interlocking shaft 33 so as to rotate integrally. Swing arm 34, and an interlocking link 35 between the arm 34 and the second operation lever 28 to form the third lock member 23.
Is also linked to the second operation lever 28 so that
The third lock member 23 is also configured to be operated to the lock side by the spring 29 together with the second lock member 22, and to be manually operated to the unlock side by the second operation lever 28.

When the upper threshing case 15 is open, the first lock member 21 is in the mounting position where the first operating lever 25 abuts against a stopper (not shown) on the upper threshing case 15 side. With the spring 26, and
The second lock member 22 and the third lock member 23
The operation lever 28 is maintained by the springs 29 in the mounting position where it comes into contact with the stopper portion (not shown) of the upper threshing case 15, and the lowering of the upper threshing case 15 causes the locking member 24 to tilt with the locking member 24. The first lock member 21 is pressed against the spring 26 in the unlocking direction relatively to the cam surface 21a to come into contact with the spring 26, and the locking member 27 is brought into contact with the inclined cam surface 22a. When the second thrust member 22 and the third thrust member 23 are swung relatively in the unlocking direction against the spring 29, and the upper threshing case 15 is in the closed position, the locking member 24 is relatively moved. The first lock member 21 is assisted by the spring 26 so as to pass through the inclined cam surface 21a and engage with the engagement concave portion 21b, and the locking member 27 relatively moves the inclined cam surface 22a. The second lock member 22 is assisted by the spring 29 so as to engage with the engagement concave portion 22b, and the third lock member 23 also engages with the lock member 32, so that all the lock means are automatically operated. It is configured so as to be in a locked state.

That is, when cleaning or inspecting the receiving net 6 and the handling room, the upper threshing case 15 is operated to swing, so that the handling room 2 is opened and closed, and at the same time, the handling drum 3 enters and exits. It is. Then, only by closing the upper threshing case 15, the first to third locking members 21, 22, and 23 automatically lock, and the upper threshing case 1 is closed.
The 5 side is closed and fixed at three places, the front and rear sides of the handling room 2 and the rear portion of the handling room, so that it is hard to vibrate regardless of threshing reaction force, rotation of the handling cylinder, and the like. In addition, the first lock member 21 and the second lock member 22 are respectively integrated with the
By operating the first operation lever 25 and the second operation lever 28 which extend largely to the side, all of the first to third lock members 21, 22, 23 are disengaged and the upper threshing case 15 The side can be closed and released.

In the closed and locked state of the upper threshing case 15 side, the free end of the first operating lever 25 and the opening / closing handle 18
And, the free end of the second operation lever 28 is arranged and set so as to be linearly arranged in the longitudinal direction of the aircraft. That is, knowing that the first operation lever 25, the opening / closing handle 18 and the second operation lever 28 are in the above-mentioned arrangement state, the upper threshing case 15 side can be the first to third lock members 21 and 2.
Thus, it can be determined that the camera is in the state of being closed and fixed by 2, 23.

As shown in FIG. 11, the connecting frame 31 is bent so as to detour the threshing and discharging straw transporting path R by the discharging straw transporting chain 4 toward the rear of the machine.

As shown in FIG. 7, when the upper threshing case 15 is closed, the upper threshing case frame 3 is closed.
The front and rear position regulating member 36, which is a plate piece formed in a wide and tapered shape in the front and rear, provided for the connection frame 3
The upper and lower threshing case 15 is displaced from the lower and threshing case 16 by the contact between the front and rear position regulating member 36 and the front and rear position regulating member 37. Is suppressed.

As shown in FIG. 3, a first reinforcing frame 38 is erected and connected between the lower end of the rear wall 16a for the handling room on the lower threshing case 16 and the lateral wall 16b on the handling opening side. A second reinforcing frame 39 connecting the frame 38 and the upper end side of the rear wall portion 16a for the handling room is provided,
The rear wall for the handling room is strengthened.

As shown in FIG. 3, the rear gas spring 20 can be engaged with a spring support shaft 40 of the rear wall portion 16a in a direction perpendicular to the axis of the spring support shaft 40, or can be removed. A mounting portion 20a formed in a U-shape is attached as possible. That is, consideration is made that the telescopic rod 20 can be attached to and detached from the rear wall portion 16a simply by inserting and removing the telescopic rod 20 in the axial direction.

The receiving net 6 is detachably attached by an attachment structure shown in FIG. That is, a pair of front and rear receiving net receiving frames 41, 41, one end of which is attached to the pivot shaft 17 and the other end of which is attached to the lower lip plate of the lower threshing case 16, slide in the circumferential direction of the handling cylinder. In addition, the front and rear sides of the receiving net 6 are mounted so as to be detachable from the handling cylinder rotation axis P1 side. Then, the pressing operation of the upper threshing case 15 acting on the end face of the receiving net 6 opposite to the handling side via the straw cutting blade base 42 causes the receiving net 6 to be pressed.
Of the lower threshing case 16 and the straw cutting blade base 42 is prevented from rising from the receiving frame 41 with respect to the receiving net 6. The receiving net 6 is fixed by being brought into contact with the direction. That is, with the upper threshing case 15 side opened and the straw cutting blade base 42 removed, the receiving net 6 is slid along the receiving frame 41 to the opposite side to the port side to engage the locking member 43. The receiving network 6 can be taken out by removing from the receiving frame 41 and lifting the receiving frame 41 toward the handling port.

As shown in FIGS. 1 and 10, an output pulley 4 of a transmission 44 provided on a traveling body in association with a belt of an engine E to enable driving of the handling cylinder 3 is provided.
5, a handlebar drive pulley 47 attached to the handlebar rotation support shaft 46,
The transmission belt 51 is wound around a first intermediate pulley 48 attached to the pivot shaft 17, a second intermediate pulley 49 attached to the lower threshing case 16 and a third intermediate pulley 50, and a tension wheel provided on the transmission 44. A transmission tension is applied to the transmission belt 51 by the body 52. The opening and closing of the upper body 15 is controlled by the transmission belt 51.
The pulleys 47, 48 and 49 are arranged in a positional relationship where they can be removed without the need for removal and relaxation operations.

In order to enable the drive of the waste straw transport chain 4, as shown in FIGS. 3 and 10, the output pulley 53 attached to the handle rotating shaft 46 and the wound sprocket 54 of the waste straw transport chain 4 are connected to each other. A transmission belt 57 is wound around a chain drive pulley 55 attached to the lower threshing case 16 side and an intermediate pulley 56 attached to the pivot shaft 17 in a state where the gears are interlocked, and a tension ring attached to the pivot shaft 17. A transmission tension is applied to the transmission belt 57 by 58. The pulleys 53, 55, and 56 are arranged in such a manner that the opening and closing of the upper threshing case 15 can be performed without the need to remove or loosen the transmission belt 57.

[Another Embodiment] Instead of the above-described embodiment, the first lock member 21 and the second lock member 22 are interlockedly connected to one operation lever.
All of the first to third lock members 21, 22, and 23 are interlocked and connected to one operation lever, and the operation of unlocking the three lock members is simplified so that the operation can be performed with less labor than separately. May be implemented.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a front view of a threshing unit in a closed state.

FIG. 2 is a front view of the threshing unit in an open state.

FIG. 3 is a rear view of the threshing unit in a closed state.

FIG. 4 is a rear view of the threshing unit in an open state.

FIG. 5 is a rear view of a second lock member in an open state.

FIG. 6 is a rear view of the second lock member in a closed state.

FIG. 7 is a side view of a third lock member.

FIG. 8 is a rear view of a third lock member.

FIG. 9 is a cross-sectional view of a receiving net mounting portion.

FIG. 10: Transmission system diagram

FIG. 11 is a perspective view of a lock member.

FIG. 12 is a schematic side view of a threshing apparatus.

[Explanation of symbols]

 2 handling room 2b handling opening 3 handling cylinder 15 upper threshing case 16 lower threshing case 19 telescopic rod 20 telescopic rod 21 lock member 22 lock member 23 lock member 24 locking member 25 operating lever 27 locking member 28 operating lever 36 front and rear position regulation Member 37 Front / rear position regulating member L1 division line L2 division line P3 fulcrum P4 fulcrum

Claims (1)

(57) [Claims] 1. A threshing case and an upper threshing case (15)
Dividing line (L1) between the side and the lower threshing case (16),
(L2), and the upper threshing case (15), which rotatably supports the handling cylinder (3), is connected to the lower threshing case (16) so that it can swing up and down and open and close. Together with the upper threshing case (15) so as to open the handling room (2), the front position of the handling room (2) and the rear part of the handling room (2)
And the position of the threshing and discharging straw transport unit (5) behind the handling room (2)
At the same time, lower threshing in the upper threshing case (15) side closed position
A lock member (21) engaged and fixed to the case (16) side,
Lock means provided with (22) and (23) are provided, and the lock means at the front position and the rear position of the handling chamber (2) are placed on the threshing case (15) side with respect to the handling port (2b). A fulcrum (P3) provided near the dividing lines (L1) and (L2)
), (P4), and hook-shaped lock members (21), (22) provided so as to be swingable about (P4).
1) and (22) so that the lower threshing case (1) is engaged.
6) The locking members (24) and (27) provided on the side and the locking members (21) and (22) are integrated with the handle (2).
b) Operating levers (25), (28) extending toward the side
And the operation lever (25),
(28) is protruded outward from the upper threshing case (15), and the locking means is connected to the upper threshing case (15).
With the closing operation of the lock members (21), (2)
2) and (23) correspond to the corresponding locking members (24) and (2).
7) and (32) , the upper threshing case (15) side is upwardly biased between the upper threshing case (15) side and the lower threshing case (16) side. Telescopic rods (19) and (20) are provided, and with the closing operation on the upper threshing case (15) side, the tapered front / rear position restricting member (36) is replaced with a corresponding front / rear position restricting member (36). 37. A threshing apparatus characterized in that the threshing apparatus is provided with positioning engagement means for inserting and engaging with 37) to position the upper threshing case (15) in the front-rear direction.