JP3406678B2 - Binding machine for combine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combiner binding machine for binding straw discharged after threshing by a combine threshing device.

[0002]

2. Description of the Related Art Conventionally, as a binding machine for combine harvesters, a transmission case having a needle, a door and a packer is disposed below a focusing portion, and a transmission case having a building, a holder and a sweeper is provided above the focusing case. The drive shaft which always rotates is supported only in the transmission case, and a one-rotation clutch is attached, and the timing shaft driven via the one-rotation clutch is cantilevered to one side, and the above transmission case is provided. Also projecting a cantilevered bundling shaft in the same direction, the end of the bundling shaft and the end of the timing shaft are interlockingly connected by a chain case, and the one-rotation clutch is attached to the transmission case below the bundling part. It has already been known that it is made to enter and operate. Further, teeth forming a rack are formed on the outer peripheral surface of the needle, and when the needle is hooked on the input shaft of the upper transmission case, a pinion that engages with the rack is attached to drive the nodule discharging portion. Things are already known.

[0003]

Among the known combiners for combine harvesters, the former is that the two cantilevered upper and lower shafts are interlockingly connected by a chain case, so that it becomes extremely unstable and costly. It became high and the timing adjustment was troublesome. Further, in the latter, since the rotation loci of the needle and the shaft of the building and holder are close to each other,
Due to the fact that the pinion cannot have a large diameter, a large resistance is applied to the building and the holder at the time of knotting, and the needle arm is long and easily shaken,
When the pinion rotates while the needle is hooked,
The posture changed and the intrusion position with respect to the holder fluctuated, which caused the holder to make a mistake in pinching the strings and make it impossible to bind them. Further, in order to engage the rack of the needle with the pinion of the bill and the holder, they have to be exposed, so that straw dust is bitten into those teeth, resulting in a significant overload and malfunction.

[0004]

According to the present invention, a lower transmission case including a needle, a packer and a door is disposed below a focusing portion, and an upper transmission case including a building, a holder and a sweeper is provided above the focusing portion. , The drive cases that always rotate in the same manner are supported in the transmission cases, and one-rotation clutches are attached to the transmission cases. The above-mentioned problems have been solved by arranging the drive clutch arm, which is operated by the one-rotation clutch mechanism of the lower transmission case, to interlock with the passive clutch arm that hangs from the upper transmission case.

[0005]

The cut grain culm is threshed by the threshing device, and the discharged straw is supplied to the bundling unit of the binding machine. And
The packer scrapes straw into the front surface of the door of the lower transmission case to focus it, and when the focusing amount reaches a predetermined amount and the door detects and operates, the clutch mechanism operates, while the one-turn clutch enters and the needle On the other hand, the driving clutch arm that works in conjunction with the clutch mechanism on the other hand activates the passive clutch arm of the upper transmission case, so that the one-turn clutch of the upper transmission case is activated and the building and holder are activated. Knotted, the sweeper ejects the bundle backwards while pulling out the knot.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings, in which 1 is a threshing device mounted on a machine base having a traveling device, and a cutter 3 and a binding machine 5 are attached to the rear part thereof, The threshing processed and the straw discharged afterward by the straw conveying device 6 are supplied to the cutter 3 when the switching plate 7 on the cutter 3 is raised and shredded, and when the stack is knocked down, the straw 3 is discharged. It passes and is supplied to the binding machine 5.

The binding machine 5 is horizontally movably mounted on a lower support frame 10 below a focusing portion 9 formed on a guide plate 8, and has a needle 11, a packer 12, and a door 1.
3, a lower transmission case 14 provided with 3, and a building 16 and a holder and a sweeper 17 which are screwed to the upper support frame 15 above the converging portion 9 so as to be laterally movable and are provided inside the knot guide 16a. And an upper transmission case 19 in which the second drive shaft 2
0, the first drive shaft 21 is inserted into the lower transmission case 14, and the sprockets 22 and 23 of the same diameter attached to the first and second drive shafts 20 and 21 are linked by a chain 25. And the crank arm 26 of the packer 12 is connected to the first drive shaft 2 to rotate in the same direction.
1 always rotates through the gears to scrape the straw supplied to the converging unit 9 onto the front surface of the door 13 to condense it.

The needle shaft 27 supported by the lower transmission case 14 and driven by the first drive shaft 21 to operate the needle 11 has a first shaft similar to the conventional one.
An idle gear 29a driven by the drive shaft 21, a fixed gear 29b, and a one-rotation clutch 28 are interposed, and the one-rotation clutch 28 enters through the one-rotation clutch operating mechanism by the sensing operation of the door 13. Then, the needle 11 is hooked. In addition, the binding shaft 30 of the upper transmission case 19
An idle gear 34 a that meshes with a gear 20 a fixed to the second drive shaft 20, a fixed gear 34 b, and a one-rotation clutch 31 are interposed in the gear.

A bent portion of the drive clutch arm 41 is pivotally supported by a support shaft 42 at a position slightly closer to the rear of the upper portion of the lower transmission case 14, and its base portion is the needle shaft 27.
It is interlockingly connected via a link 45 to a crank arm 43 projecting from the. Further, an upper portion of a rear side of the upper transmission case 19 is pivotally supported by an upper portion of a passive clutch arm 46 which is interlocked with the one-turn clutch 31 and hung toward the rear portion of the focusing portion 9. When the one-turn clutch 28 of the lower transmission case 14 is engaged and the needle shaft 27 is rotated, the crank arm 43 protruding therefrom is linked to the rear side of the door 13 and the sweeper 17 via the link 45.
Since the passive clutch arm 46 is swung forward from the standby position A in the vicinity of the discharge operation locus, the pin 46a protruding from the lower end of the passive clutch arm 46 or the roller attached thereto is swung to move the passive clutch arm 46 forward. The rotating clutch 31 enters and operates to rotate the binding shaft 30, and the bevel gear 33 attached to the binding shaft 30 moves the bevel gear 35 attached to the shaft of the building 16 and the bevel gear attached to the shaft of the holder of the needle 11. Since the building 16 is knotted, the holder holds the next string, the sweeper 17 discharges the bundle while pulling out the knot, and the drive clutch arm 41 is positioned below the guide plate 8. After descending once to the bottom dead center position B, it returns to the standby position A and stops.

In this way, the drive clutch arm 41 is lowered to the bottom dead center position B and then raised to the standby position A and stopped in the latter stage of its operation. However, the activation timing of the bill 16 and the holder can be accurately synchronized with the operation of the needle 11. Also,
Since both the drive clutch arm 41 and the passive clutch arm 46 operate while standing by behind the converging portion in the front part of the door 13, there is no obstacle to swallowing the straw, and the drive clutch arm 41 is A By standing by at the position, the weeds attached to the straw bundle and discharged when the bundle is discharged are prevented from being accumulated on the guide plate 8 or entangled with the door 13. Furthermore, since the drive clutch arm 41 is provided on the ear side of the lower transmission case 14,
At the time of discharging the bundle, if the bundle conveying and discharging device mounted on the rear part of the binding machine is tilted toward the cut land side while supporting and guiding the ears side of the straw bundle and stabilizing the bundle posture, the drive is performed. The clutch arm 41 can provide resistance to the ear side to make the transfer to the straw bundle carrying-out device 39 smooth.

The passive gear 36a of the take-up shaft 36 supported on the front portion of the upper transmission case 19 meshes with the front portion of the gear 20a of the second drive shaft 20 and is constantly driven to rotate, so that the take-up shaft 36 is , A pair of left and right scraping arms 37, 37 whose upper part is pivotally supported 37a is driven via a crank arm 37b, and the scraping arms 37, 37 collect the straw discharged from the threshing device 1 from the focusing portion 9. Scratch from the front to within the swaging range of the packer 12.

When binding the ears side of straw, the ears side lower parts of the upper transmission case 19 and the lower transmission case 14 are connected by a horizontal U-shaped connecting frame 48, and when binding the root side, The connecting frame 48 is removed, and stays 49 and 50 are screwed to the side surfaces of the upper and lower transmission cases 14 and 19 on the side of the base, respectively, and the end portions of the connecting frame 48 are screwed to their tip ends. In addition, the lower transmission case 1
The handle 52 is attached to the end of the spiral shaft 51 screwed to the lower part of
Is attached to the upper and lower transmission cases 1 when the fastening to the frame is released and the handle 52 is rotated.
Since 4 and 19 move integrally to the left and right while being connected by the connecting frame 48, the binding position for straw can be freely changed.

[0013]

According to the present invention, the needle 1 is provided below the focusing portion 9.
1. Lower transmission case 14 with packer 12 and door
The building 16, the holder and the sweeper 1 are installed above
The upper transmission case 19 provided with 7 is installed, the drive shafts 20 and 21 that rotate at the same time are supported by the transmission cases 14 and 19, and the one-rotation clutches 28 and 31 are attached, respectively. A one-rotation clutch is activated by a sensing operation of the door, and a one-rotation clutch of the upper transmission case 19 is driven by a one-rotation clutch mechanism of the lower transmission case 14 to a passive clutch arm 46 hung from the upper transmission case 19. Arm 41
Since it is configured to operate in interlocking linkage, it is not necessary to connect the timing shaft and the bundling shaft with the heavy chain case unlike the conventional one, and the aircraft can be made compact and lightweight. be able to. Also,
The operation mechanism of the one-turn clutch of the lower transmission case 14 is adapted to operate the one-turn clutch of the upper transmission case 19 by interlocking the drive clutch arm 41 and the passive clutch arm 46. The culm is not caught or entangled, and the one-turn clutch of the upper transmission case 19 can always be reliably operated at the set timing.

[Brief description of drawings]

FIG. 1 is a side view of a binding machine mounted on a rear portion of a threshing device.

FIG. 2 is a rear view of the same binding machine.

FIG. 3 is a transmission system diagram.

[Explanation of symbols]

9 Focusing section 11 needles 12 packers 13 doors 14 Lower transmission case 16 building 17 sweeper 19 Upper transmission case 20 Second drive shaft 21 First drive shaft 28,31 One-turn clutch 37 Scratch arm 41 Drive clutch arm 46 Passive clutch arm

Claims (3)

(57) [Claims] 1. A lower transmission case 14 provided with a needle 11, a packer 12 and a door is disposed below the focusing section 9,
An upper transmission case 19 having a building 16, a holder and a sweeper 17 is installed above the transmission case 1
Drive shafts 20 and 21 that always rotate at the same time are supported on 4 and 19, and one-rotation clutches 28 and 31 are attached respectively, and one-rotation clutch of the lower transmission case 14 is turned on and off by the sensing operation of the door, and the upper transmission case. The one-turn clutch of 19 is configured such that the passive clutch arm 46 hung from the upper transmission case 19 is operated by interlockingly operating the drive clutch arm 41 operated by the one-turn clutch mechanism of the lower transmission case 14. A binding machine for combine harvesters. 2. The combine binding machine according to claim 1, wherein the operating ranges of the passive clutch arm 46 and the drive clutch arm 41 are located on the bundle discharge side of the focusing unit 9. 3. The stop position of the drive clutch arm 41 is set to a position above the guide plate 8 forming the bottom surface of the focusing unit 9 and close to the operation trajectory of the sweeper 17, and the bottom dead center position is set to the guide plate. 8. The method according to claim 1 or 2, which is set lower than 8.
Binding machine for the two combine.