JP3003157B2 - Combine second transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a second cutting blade transmission of a combine.

(Prior Art) Conventionally, Japanese Utility Model Laid-Open No. 63-4621 discloses a traveling device provided at a lower position of a frame, a threshing device provided at an upper position of the frame, and a threshing device provided at a front position of the frame. A cutting unit having one cutting blade and a second cutting blade located behind the cutting blade, retreating means for retreating the second cutting blade upward when the second cutting blade collides with an obstacle, A vertically moving device capable of moving the cutting blade up and down for adjusting and storing the cutting height of the two cutting blades, wherein the second cutting blade is moved up to the storage position by the vertically moving device. The second cutting blade transmission device of the combine equipped with a power transmission means which automatically stops the cutting blade when the cutting blade is turned on, but automatically stops when the cutting blade is set to the working position even when the retreating means is retracted. Have been.

(Problem to be Solved by the Invention) The second cutting blade of the above-mentioned known example retracts upward with respect to the obstacle in the field, but the power transmission mechanism of the second cutting blade is
The power transmission is cut off when the second cutting blade is retracted upward. As described above, when the power transmission is cut off when the second cutting blade retreats upward, the high-cutting grain stalks cut by the first cutting blade remain in the field and are pushed down. In the past, it was considered that this work was sufficient.However, operating the second cutting blade to cut the high-cutting grain culm even in the retracted upper position is more difficult for subsequent work than pushing down the high-cutting grain culm. Does not happen.

That is, the power transmission mechanism of the second cutting blade needs to be automatically stopped for danger prevention when the second cutting blade is retracted upward, but the operation is still continued when the second cutting blade is retracted. Is better.

(Object of the Invention) Accordingly, an object of the present invention is to eliminate pushing down by the second cutting blade.

(Means for Solving the Problems) Therefore, in the present invention, the traveling device 2 provided at the lower position of the frame 1, the threshing device 3 provided at the upper position of the frame 1, and the forward device of the frame 1 are provided. A cutting section 4 having a first cutting blade 6 and a second cutting blade 17 located behind the cutting blade 6, and retracting the second cutting blade 17 upward when the second cutting blade 17 collides with an obstacle; Evacuation means, and the second cutting blade 17
And a vertically moving device capable of moving up and down for adjusting the cutting height and storing the second cutting blade 17 by moving the second cutting blade 17 up to the storage position by the vertically moving device. The cutting blade 17 is automatically stopped when the cutting blade 17 is set to the working position, and a power transmission means for automatically operating the cutting blade irrespective of the evacuation by the evacuation means is mounted. This is a second cutting blade transmission of the combine.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. 1 is a frame, 2 is a traveling device provided at a lower portion of the frame 1, 3 is a threshing device provided at an upper portion of the frame 1, and 4 is a front portion of the frame 1. A cutting reel 5 is provided at a position on the front side of the cutting unit 4, a first cutting blade 6 is provided on a cutting unit frame 7 therebelow, and a cutting blade behind the first cutting blade 6 is provided. The frame 7 is provided with an auger 8 for collecting the stalks cut by the first cutting blade 6.

The rear wall 9 of the mowing unit frame 7 is provided with an elevator 10 leading to a threshing room of the threshing device 3. 11 is a herb, 12 is a herb
This is a forced weeding device installed behind 11.

The mowing unit frame 7 is attached to the elevator 10 so as to be able to rotate vertically together with the elevator 10 by expanding and contracting a mowing unit vertical movement cylinder 15 around an upper rotating shaft 14 of the elevator 10. Reference numeral 16 denotes a lower rotation axis of the elevator 10.

Thus, a second cutting blade 17 described in detail below is provided between the rear wall 9 of the cutting unit frame 7 and the front end of the traveling device 2.

As shown in FIG. 4 (rear view), a support frame 18 in the left-right direction is provided on the rear side of the rear wall 9 of the mowing unit frame 7. The support frame 18 is formed in a shape so as to avoid the lower part of the elevator 10, the upper part of the left bent part 19 is fixed to the left side of the rear wall 9, and the upper part of the right bent part 20 is located at a substantially right and left middle position of the rear wall 9. Stick.

A side longitudinal tube 21 is fixed to the left bent portion 19, and a central longitudinal tube 22 (FIG. 5) is fixed to the right bent portion 20. A vertical vertical support rod 23 is vertically slidably fitted to the side vertical cylinder 21. The central longitudinal tube 22 has a central longitudinal support rod 24
(FIG. 5) is fitted slidably up and down.

The lower end of the side vertical support rod 23 is on the left side of the second cutting blade frame 25 of the second cutting blade 17, and the lower end of the central vertical support rod 24 is the left and right center of gravity of the second cutting blade frame 25. Install each.

A lower end portion of the mounting arm 26 that stands upward is fixed to the upper surface of the support frame 18 on the right bent portion 20 side (FIG. 4). The upper end of the mounting arm 26 is bent toward the center vertical support rod 24,
At the rear of the central vertical support rod 24 (FIG. 4), the upper end of the second cutting blade vertical movement cylinder 27 is attached to the upper end of the mounting arm 26 (FIG. 4).

A shaft is attached to the lower end of the rod of the second
28 (FIG. 2), and attach the shaft 28 to the central vertical support rod 24 (FIG. 4).
(See FIG. 2). The center vertical support rod 24 is inserted into the upper and lower long holes 30 of the mounting plate 29 fixed to the lower end of FIG.
Is configured to move upward when it comes into contact with an obstacle such as a projecting portion of a field, thereby preventing the second cutting blade 17 from being damaged.

When the upper and lower second cutter blade vertical movement cylinder 27 is extended and contracted, the second cutter blade frame 25
At this time, the central vertical support rod 24 is slid up and down with respect to the central vertical axis tube 22, and the side vertical support rod 23 is slid up and down with respect to the side vertical axis tube 21. Adjust the height position of the cutting blade 17.

Thus, the rotation from the engine is transmitted to the upper rotating shaft 14 of the elevator 10 in FIG. The upper rotating shaft 14
A gear 31 is fixed to the gear, and a chain 33 is wound between the gear 31 and a gear 32 fixed to the lower rotating shaft 16.

FIG. 2 illustrates a power transmission mechanism as a main part of the present invention. The gear 32 is fixed to a lower rotating shaft 16 of a lower roller of the conveyor belt, and a universal joint 34 is fixed to the lower rotating shaft 16. The main horizontal drive shaft 35 is connected via the.

The main horizontal drive shaft 35 drives a transmission device a reaching the raking reel 5, a transmission device b reaching the first cutting blade 6, and a transmission device c reaching the auger 8 and the second cutting blade 17, respectively. Let it.

The main horizontal drive shaft 35 faces the transmission box 36, a pulley 37 is attached to the main horizontal drive shaft 35 in the transmission box 36, and a belt is provided between the main horizontal drive shaft 35 and the pulley 39 provided on the first intermediate shaft 38.
This constitutes a part of a power transmission device that winds 40 and reaches the scraping reel 5.

Thus, a gear 42 is provided on the main horizontal drive shaft 35 outside the inner plate 41 of the transmission box 36, and a second intermediate shaft provided separately is provided.
A chain 45 is wrapped around a gear 44 provided on 43. The other end of the second intermediate shaft 43 protrudes from the outer plate 46 of the transmission box 36, a pulley 47 is fixed to the protruding portion, and a pulley 49 provided on the rotation shaft 48 of the auger 8 is provided between the pulley 47 and the pulley 49. The belt 50 is wound around (FIG. 3) to constitute a transmission for rotating the auger 8.

Also, as shown in FIG. 2, the second intermediate shaft outside the pulley 47
A drive pulley 51 is fixed to 43, and a belt 54 is wound around the drive pulley 51 and a passive pulley 53 provided on a gear box 52 provided on the side plate 46. The rotation of the pulley 53 is transmitted to a vertically extendable transmission shaft 55 via a bevel gear in the gear box 52.

The lower part of the transmission shaft 55 is indirectly fixed to the left end of the second cutting blade frame 25, and the transmission shaft 55, together with the power transmission, is the same as the side vertical support rod 23 and the side vertical cylinder 21, It has the function of supporting the left end of the cutting blade frame 25.

A cutter crank 56 is attached to the lower end of the transmission shaft 55, one arm 58 of a bell crank 57 is attached to the cutter crank 56, and the other arm 59 of the bell crank 57 is a sliding blade of the second cutting blade 17. Attach.

Then, the tension roller 65 of the tension clutch A for turning on / off the transmission of the drive to the second cutting blade 17 is brought into contact with the belt 54 so as to be able to freely come and go (FIG. 3). The tension roller 65 is fixed to the tip of a tension arm 66, and the base of the tension arm 66 is fixed to one end of a horizontal shaft 67 in the left-right direction. A spring 68 biases the tension arm 66 so as to rotate toward the belt 54.

Both ends of the horizontal shaft 67 are mounted on the side plates 41 and 46 of the transmission box 36, and the other end of the horizontal shaft 67 projects from the inner plate 41, and the base of the tension on / off arm 69 is fixed to the projection. .
The tension arm 66 and the tension on / off arm 69 are simultaneously rotated by the horizontal shaft 67.

Fix the pin 70 to the tip of the tension on / off arm 69,
The pin 70 is engaged with the long hole 72 of the vertical moving plate 71. The vertically moving plate 71 is fixed to a lower end portion of a tension operating rod 73 substantially parallel to the central vertical support rod 24.

A base of a substantially horizontal stay 74 protruding toward the transmission box 36 is fixed to an upper portion of the center vertical support rod 24, and a shaft 75 is rotatably fixed to a tip of the stay 74. A through hole 76 is formed in the shaft 75, and the upper portion of the tension operation rod 73 is inserted into the through hole 76 so as to be vertically movable. The upper end of the tension operating rod 73 is projected above the through hole 76, and a bolt 77 for retaining is screwed into the projected portion.

Thus, when the central vertical support rod 24 moves upward, the tension operation rod 73 is pulled upward by the stay 74, but the long hole 72 of the vertical movement plate 71 at the lower end of the tension operation rod 73 pulls the pin 70. Since the tension on / off arm 69 is not rotated, the tension roller 65 does not separate from the belt 54, and keeps the tension clutch A engaged. Therefore, the long hole 72 of the vertical moving plate 71 is formed to have the same length as the long hole 30 with which the shaft 28 at the lower end of the rod of the second cutting blade vertical movement lower cylinder 27 is engaged. Even if the frame 25 is retracted upward, the tension roller 65 is not cut off.

When the center vertical support rod 24 moves down, only the stay 74 moves down because the elongated hole 72 at the lower end of the tension actuating rod 73 is engaged with the pin 70.

The tension clutch A is a tension roller.
Although 65 is used, other latch mechanisms may be used.

In the figure, 79 is a height detector, 80 is a rod of the height detector 79,
Reference numeral 81 denotes a switch.
17 height control is performed.

12 to 14 show an embodiment in which an automatic direction control mechanism is provided in the reaper 4.

At the front portions of the left and right side walls 82 of the reaper 4, an inner sensor 84 and an outer sensor 85 of a direction control sensor 83 projecting to the left and right sides are provided. When lowered for reasons such as stalking of the grain stem, the stalk reel 5 is configured to be pulled inward in conjunction with the downward movement of the stalk reel 5 to prevent interference of the squeezing reel 5 with the direction control sensor 83. is there.

The direction control sensor 83 is provided outside the front portion of the side wall 82, the inner sensor 84 projects inward from the side wall 82, and the outer sensor 85 projects outward. The side wall 82
Is provided with an arm 86 for forcibly rotating the inner sensor 84 toward the side wall 82. The arm 86 is formed by a vertical rod, and the upper part of the arm 86 is rotatably mounted on the side wall 82. The lower end of the arm 86 is located below the inner sensor 84. 87 is a spring for rotating the arm 86, 88 is a wire locked on the upper end of the arm 86, and the other end of the wire 88 is locked on the mounting arm 89 of the raking reel 5. Therefore, when the squeeze reel 5 moves upward, the arm 86 is retracted to the non-contact position by the wire 88, and when the squeeze reel 5 moves downward, the arm 88 rotates due to the elastic force of the loose spring 87, The inner sensor 84 is forcibly retracted. When the inner sensor 84 is forcibly retracted, the automatic direction control is turned off.

(Operation) Next, the operation will be described.

A, operation at the time of storage The present invention is the above configuration, when not working, and when not using only the second cutting blade 17, the second cutting blade
Move 17 upward to the storage position. That is, when the upper fixed second cutting blade vertical movement cylinder 27 is reduced, the lower mounting plate 29
Moves upward, the mounting plate 29 moves the fixed central vertical support rod 24 upward, and the second cutting blade frame 25 moves upward.

Further, the stay 74 is moved upward by the upward movement of the central vertical support rod 24, the tension operation rod 73 is moved upward, the vertical movement plate 71 fixed to the lower end portion of the tension operation rod 73 is moved upward, and the vertical movement plate 71 is moved. The pin 70 is pulled upward by the long hole 72, and the tension on / off arm 69 is rotated upward about the horizontal axis 67.

Then, the tension arm 66 is attached to the other end of the horizontal shaft 67 in FIG.
Is fixed, the rotation of the horizontal axis 67 causes the tension arm 66 to rotate against the elasticity of the spring 68 to release the tension roller 65 from the belt 54, and the second cutting blade 17 is linked with the upward movement. To turn off the drive transmission.

(B) Operation at the time of work preparation At the time of work preparation, the second cutting blade 17 is moved down. That is, when the upper fixed second cutting blade vertical movement cylinder 27 is extended, the lower mounting plate 29 moves down, and the mounting plate 29 moves the fixed central vertical support rod 24 down, so that the second cutting blade frame 25 Moves down.

Further, the stay 74 is moved downward by the downward movement of the center vertical support rod 24, the tension operating rod 73 is moved downward, the vertical moving plate 71 fixed to the lower end of the tension operating rod 73 is moved downward, and the vertical moving plate 71 is moved. The pin 70 fitted in the long hole 72 moves downward, and the tension roller 65 is rotated by the spring 68 toward the belt 54 to receive the drive transmission.

C. Harvesting short culm or lodging culm The first cutting blade 6 is moved up according to the low spike. Second cutting blade
17 lower and cut the root. Therefore, the second cutting blade vertical movement cylinder 27 is extended, the lower mounting plate 29 is moved down, the center vertical support rod 24 to which the mounting plate 29 is fixed is moved down, and the second cutting blade frame 25 is moved down. To move the pin 70
The second cutting blade 17 is located at the upper end of 72, and is a cutting position for a short grain culm or a lodging grain culm.

In this state, when the body is advanced, weeding is performed by the weeding body 11, the uncut culm is scraped by the scraping reel 5, and the first cutting blade 6
Only the tip of the grain culm is cut by sliding of the sliding blade, and the grain culm stalked into the auger 8 by the raking reel 5 is joined to the base of the elevator 10 by the auger 8, and the elevator 10
And threw it into the threshing device 3 for threshing. Therefore, only the tip of the grain culm is supplied to the threshing device 3, and the load on the threshing device 3 is reduced.

When the body is further advanced, the second cutting blade 17 cuts off the culm left behind in the field by the first cutting blade 6 from the root side.

At this time, the second cutting blade frame 25 may come into contact with an obstacle such as a projecting portion of the field, and the conventional one stops. 27
Since the shaft 28 is provided at the lower end of the rod and the shaft 28 is inserted into the long hole 30 of the mounting plate 29 fixed to the lower end of the central vertical support rod 24, the second cutting blade frame 25 is When it comes into contact with an obstacle such as a convex portion, the second cutting blade frame 25 moves up the length of the long hole 30 to prevent breakage. When the vehicle passes over the obstacle, it returns to its original height by its own weight, so that the central vertical support rod 24 moves upward from the state shown in FIG. 10 to the state shown in FIG. Even if the operating rod 73 is pulled upward, the pin 70 only moves from the upper end to the lower end of the long hole 7 and the tension on / off arm 69 does not rotate.
Does not rotate, the tension roller 65 is kept in contact with the belt 54, the tension clutch A is maintained in the engaged state, and the second cutting blade 17 operates even if it retracts upward. Do not push down the high-cut stalks that were cut in step 2.

D. Harvesting of long grain culm The first cutting blade 6 is moved up according to the high tip. Second cutting blade
17 lower and cut the root. Therefore, the second cutting blade vertical movement cylinder 27 is extended, the lower mounting plate 29 is moved down, the central vertical support culm 24 to which the mounting plate 29 is fixed is moved down, and the second cutting blade frame 25 is moved down. To move the pin 70
Located at the upper end of 72, the second cutting blade 17 is at the cutting position of the long grain culm.

In this state, when the body is advanced, weeding is performed by the weeding body 11, the uncut culm is scraped by the scraping reel 5, and the first cutting blade 6
Only the tip of the grain culm is cut by sliding of the sliding blade, and the grain culm stalked into the auger 8 by the raking reel 5 is joined to the base of the elevator 10 by the auger 8, and the elevator 10
And threw it into the threshing device 3 for threshing. Therefore, only the tip of the grain culm is supplied to the threshing device 3, and the load on the threshing device 3 is reduced.

When the body is further advanced, the second cutting blade 17 cuts off the culm left behind in the field by the first cutting blade 6 from the root side.

At this time, the second cutting blade frame 25 may come into contact with an obstacle such as a projecting portion in the field, but is not stopped as in the case described above. That is, in the present invention, a shaft 28 is provided at the lower end of the rod of the second cutter blade vertical movement cylinder 27, and the shaft 28 is attached to the central vertical support rod 24.
Is inserted into the elongated hole 30 of the mounting plate 29 fixed to the lower end of the blade, so that when the second cutting blade frame 25 comes into contact with an obstacle such as a projecting portion of a field, the frame moves upward by the length of the elongated hole 30. 11 to prevent damage, and because the second cutting blade frame 25 returns to its original height by its own weight when passing over an obstacle such as a projecting portion of a field, the vertical position from the center in FIG. When the support rod 24 moves upward, the stay 74 does not contact the lower surface of the bolt 77 at the upper end of the tension operation rod 73.
Is not pulled upward and does not rotate the tension on / off arm 69.

(Effect) Conventionally known Japanese Utility Model Laid-Open No. 63-4621 discloses a traveling device provided at a lower position of a frame, a threshing device provided at an upper position of the frame, and a first threshing device provided at a front position of the frame. A cutting unit having a cutting blade and a second cutting blade located behind the cutting blade; a retracting unit for retracting the second cutting blade upward when the second cutting blade collides with an obstacle; A combiner provided with a vertically moving device capable of moving the cutting blade up and down for adjusting the cutting height and storing the cutting blade, wherein the second cutting blade is moved up to the storage position by the vertically moving device. The cutting blade is automatically stopped when the cutting blade is in the working position, but automatically stopped even when the retracting unit is retracted by the retracting unit. However, the second cutting blade of the known example, Evacuate upward against obstacles in the field,
The power transmission mechanism is configured to cut off power transmission when the second cutting blade is retracted upward. If the power transmission is cut off when the second cutting blade is retracted upward, the high-cutting grain culm cut by the first cutting blade is left uncut in the field and is pushed down. In the past, it was considered that the work was sufficient, but even when the cutting was high, operating the second cutting blade does not hinder the subsequent work than pushing down.

That is, the power transmission mechanism of the second cutting blade needs to be automatically stopped when retracted above the second cutting blade, but it is better to continue the operation when the second cutting blade is retracted. Things.

However, the present invention provides a traveling device 2 provided at a lower position of the frame 1, a threshing device 3 provided at an upper position of the frame 1, a first cutting blade 6 provided at a front position of the frame 1, and the cutting device. A cutting unit 4 having a second cutting blade 17 located behind the blade 6, a retracting unit for retracting the second cutting blade 17 upward when the second cutting blade 17 collides with an obstacle, A combiner provided with a vertically moving device capable of moving the cutting blade 17 up and down for adjusting the cutting height and storing the cutting blade 17;
When the second cutting blade 17 is moved up to the retracted position by the vertically moving device, the cutting blade 17 is automatically stopped, but when the cutting blade 17 is set to the working position, the retreat by the retracting means is performed. Since it is a second cutting blade transmission of a combine equipped with a power transmission means that automatically operates and performs mowing work irrespective of the operation, a. When the second cutting blade 17 is not used for the reason described above, the second cutting blade 17 is not used.
Is moved upward to the storage position. In this case, when the second cutting blade 17 is moved upward by the above-described operation, the drive transmission is turned off to stop the operation.

(B) In the cutting of the grain culm, the second cutting blade 17 cuts the root side of the uncut grain culm by the first cutting blade 6, but at this time, the second cutting blade frame 25 has There is a case where the second cutting blade frame 25 comes into contact with an obstacle such as a projecting portion of a field, and moves up and down. Even so, power transmission is not interrupted, so there is little effect on post-operation.

[Brief description of the drawings]

1 is a side view of the reaper, FIG. 2 is a rear view of the same, FIG. 3 is a side view of a power transmission mechanism of the reaper, FIG. 4 is a rear view of a power transmission mechanism of the reaper, and FIG. FIG. 6 is a plan view of the stay portion of the mowing portion, FIG. 7 is a side view of the same, FIG. 8 is a side view of the retracted state of the second mowing blade, and FIG. Fig. 10 is a side view of a cutting work position of a short cutting culm and the like of a second cutting blade, and Fig. 11 is a side view of a normal (including long culm) cutting work position of a second cutting blade. FIGS. 12 to 14 show an embodiment of the automatic direction control mechanism. DESCRIPTION OF SYMBOLS 1... Frame 2... Traveling device 3... Threshing device 4
... cutting part, 5 ... scraping reel, 6 ... first cutting blade, 7 ...
... Mowing part frame, 8 ... Auger, 9 ... Back wall, 10 ...
... Elevator, 11 ... Weeding body, 12 ... Forcing weeding device,
14 ... Top rotating shaft, 15 ... Mowing part vertical moving cylinder, 16 ...
… Lower rotating shaft, 17… second cutting blade, 18… support frame,
19 ... left bent part, 20 ... right bent part, 21 ... vertical axis cylinder,
22 ... central longitudinal tube, 23 ... side vertical supporting rod, 24 ... central vertical supporting rod, 25 ... second cutting blade frame, 26 ... mounting arm, 27 ...
… Second cutting blade vertical movement cylinder, 28 …… axis, 29 …… mounting plate,
30 ... long hole, 31 ... gear, 32 ... gear, 33 ... chain,
34 …… Universal joint, 35 …… Main horizontal drive shaft, 36 …… Transmission box, 37 …… Pulley, 38 …… First intermediate shaft, 39 …… Pulley, 40 …… Belt, 41 …… Inner plate, 42 … Gear, 43 …… Second intermediate shaft, 44 …… Gear, 45…
... Chain, 46 ... Outer plate, 47 ... Pulley, 48 ... Rotating shaft, 49 ... Pulley, 50 ... Belt, 51 ... Driving pulley, 52 ... Gear box, 53 ... Passive pulley, 54 ... …
Belt, 55 ... Transmission shaft, 56 ... Cutter crank, 57 ...
Bell crank, 58 ... Arm, 59 ... Arm, 65 ... Tension roller, 66 ... Tension arm, 67 ... Horizontal axis, 68 ... Spring, 69 ... Tension on / off arm, 70 ...
Pin, 71: Vertical movement plate, 72: Slot, 73: Tension actuating rod, 74: Stay, 75: Shaft, 76: Through hole,
77 ... bolt, 79 ... height detector, 80 ... rod, 81 ...
... switch, 82 ... side wall, 83 ... direction control sensor, 84 ...
... inside sensor, 85 ... outside sensor, 86 ... arm, 87 ...
... Spring, 88 ... Wire, 89 ... Mounting arm, A ... Tension clutch, a ... Transmission device, b ... Transmission device, c
…… a transmission.

Claims (1)

(57) [Claims] A traveling device provided at a lower position of a frame.
And a threshing device 3 provided at an upper position of the frame 1,
A cutting unit 4 having a first cutting blade 6 provided at a front position of the frame 1 and a second cutting blade 17 positioned behind the cutting blade 6;
When the second blade 17 collides with an obstacle, the second blade 17
A retracting means for retracting the cutting blade upward, and a vertically moving device capable of moving the second cutting blade 17 up and down for adjusting the cutting height and storing the second cutting blade 17. When the cutting blade 17 is moved up to the storage position by the vertically moving device, the cutting blade 17 is automatically stopped.
A second cutting blade transmission of a combine having a power transmission means mounted thereon for automatically performing a harvesting operation independently of the retreat by the retreat means when is set to the work position.