JPS6313649B2 - - Google Patents

Description

[Detailed Description of the Invention] In the conventional bundling device, when a predetermined amount of grain culm is collected in the collecting culm, the door is operated and the one-turn clutch is engaged, the needle and sweeper are activated simultaneously to drive the needle and sweeper. The sweeper released the tied culm after stringing and knotting with Notterbil during one revolution of one shaft.

In other words, the starting point, or stopping point, of the sweeper was set at the position shown by the symbol C in Figure 9c so that the needle and sweeper would start at the same time and release the tied culm after knotting was completed, so the sweeper would not be able to release the tied culm. If the needle gets caught or the tip of the needle sticks into the bundle culm, it may be difficult to remove the bundle culm from the sweeper, and the discharge posture may be disturbed or the discharge may become impossible. Also, if the clutch engages once, the needle and sweeper may Since both started at the same time, the starting load was large, which resulted in damage to the transmission part and increased noise.

The purpose of the present invention is to improve the above-mentioned drawbacks, and the purpose of the present invention is to interpose a delay clutch between the needle shaft operated by the one-turn clutch and the input shaft of the sweeper to start the sweeper. The feature is that the start point of the sweeper is delayed and the starting point of the sweeper is set on the return route, and after releasing the culm bundle without disrupting the operation timing of the needle and the sweeper, the sweeper is operated to the return route and waited. That is.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on one side of the machine base with a traveling device, and the other side has an operation panel 2, a seat 3,
A grain tank 4 and the like are provided, and the grain culm harvested by the reaping device 5 provided at the front is threshed by the threshing device 1, and the straw culm discharged from the culm discharge port 1a is sent to the straw conveyor 6. and a chain 6' with a protrusion provided outside and rearward of the feed chain 1b.

The input pulley 8 of the binding device 7 is driven by an appropriate shaft of the threshing device 1, and the shaft 11 of the large gear 10, which meshes with the small gear 9 attached to the shaft of the input pulley 8, is fixed to the packer shaft 12. cylinder shaft 1
The gear 14 is driven by the gear 12 which rotates at all times, and the gear 1 rotates integrally with the gear 12.
5 is meshed with an idle gear 17 that is loosely fitted on a needle shaft 18 that operates the needle 16, and a protrusion 17' on one side of this idle gear 17 rotates as the door 20 rotates, as in the conventional case. As a result, the needle shaft 18 rotates once and the needle 16 wraps the binding string around the bundle culm.

Further, a cam plate 21 having an oblique groove 21a on the outer peripheral surface and a guide projection 21b protruding toward the idler gear 17 from the side of the groove 21a is fixed to the inner side of the idler gear 17 of the needle shaft 18. The large diameter part of the joint cylinder 22 is rotatably fitted to the inner end of the needle shaft 18 via a bearing 23, and the small diameter part is an intermediate shaft that transmits power to the knotter and sweeper 24. The bearing 2 is fitted to the transmission case 26 with a spline fitted to the end of the bearing 25.
6'.

Furthermore, a clutch cylinder 28 is spline-fitted to the outer periphery of the joint cylinder 22 so as to be slidable in the axial direction.
On the free rotating gear 17 side, a taper claw 26a having a pin 27 facing in the radial direction projects in a direction parallel to the axial direction, and on the other side of the free rotating gear 17, only the taper claw 26 and S are provided. Tapered claws 17'' having different phases are protruded.

Therefore, when the one-turn clutch 19 is engaged, the free rotation gear 17, the needle shaft 18, and the cam plate 21 begin to rotate simultaneously.

At that time, the pin 27 is in the groove 21a, and the free rotating gear 17 and the cam plate 21 start from the position shown in FIG. Idle gear 1
The taper pawl 26a is pushed out to the 7 side and becomes the state shown in FIG.

From this state, the free rotating gear 17 and the cam plate 21 are
When the rotating gear 17 rotates by
contacts the tapered pawl 26a, and only then does the clutch cylinder 28 begin to rotate. That is, the intermediate shaft 25 that transmits power to the sweeper 24 is the needle shaft 18.
It starts rotating with a delay of S.

After that, the cam plate 21, the clutch cylinder 28, and the free rotating gear 17 rotate while maintaining the relationship shown in FIG. The idler gear 17, which is in the pushed out state and is constantly rotating, rotates the clutch cylinder 28 to the position shown in FIG.
1a, the clutch cylinder 28 and the intermediate shaft 25 come to a stop because they come into contact with the guide protrusion 21b and enter the groove 21a, and the taper pawl 26a separates from the taper pawl 17''.

Furthermore, since the sprocket 29 attached to the other end of the intermediate shaft 25 is interlocked and connected to the binding shaft in the upper holding cylinder 30 via a chain, a knotter cam 30' ( Notterville (not shown) rotates once as the intermediate shaft 25 rotates.

The sweeper 24 is stopped at the middle part A of the return path as shown in FIG. After hanging,
The clutch cylinder 28, cam plate 21 and free rotating gear 1
Delayed clutch A consisting of 7 taper pawls 17″, etc.
The intermediate shaft 25 and the knotter cam 30' are activated with a delay, and the sweeper 24 reaches the position shown in FIG. It does not stop at the position shown, but returns to the above-mentioned position A.

Although the fan-shaped gear that rotates the bevel gear provided at the base of the knotter building is not shown, it is engraved on the knotter cam 30' so that it is displaced in the rotational direction by the amount that the intermediate shaft 25, etc. is started later than in the conventional model. Therefore, it operates in synchronization with the needle 16 like the conventional one.

Next, a device for discharging the straw bundles discharged by the sweeper 24 to the rear mown field side will be explained. The discharging arm 31 is constructed by protruding elastic rods 32 and 33 from the tip of a rigid body part 31a. The tips of these elastic rods 32 and 33 are bifurcated and sandwich the door 20 and face the sweeper 24, and when viewed from above, there is a receiving part a bent toward the front and a receiving part a bent toward the front. The rigid body part 31a is formed into an extruded part b whose tip is bent further upward, and the base of the rigid body part 31a is connected to the crank arm 34b via a sphere 34a.
A fulcrum pin 35 protruding from the tip of the body in the longitudinal direction of the body connects to a holder 38 protruding from the cylindrical body 40 via two links 37, 37 connected by a vertical fulcrum pin 36.
It is connected to the upper vertical fulcrum pin 39.

A gear 42 attached to the shaft 41 of the crank arm 34b meshes with a gear 43 loosely fitted to the end of the intermediate shaft 25, and the sprocket 2
A substantially semicircular delay drive plate 44 is fixed on the outside of the gear 9, and a receiving piece 43' protruding from the plate surface of the gear 43 is connected to the delay drive plate 44 as shown in FIG. When the intermediate shaft 25 starts, the delay drive plate 44 starts clockwise from the state shown in () above, and when it rotates by θ, it comes into contact with the receiving piece 43'. By touching and pressing,
The gear 43 is started, and in this state, the receiving piece 43' and the gear 43 are rotated from the position () to the position () in FIG. 6b, and then stopped.

As the gear 43 rotates, the crank arm 34b sequentially rotates clockwise from the position shown in FIG. 8a to the position shown in FIG. 8b.

During this time, the base of the discharge arm 31 moves in an arc due to the rotation of the crank arm, and the middle part is connected by a longitudinal fulcrum pin 35 to links 37, 37 that operate only in a horizontal plane, so that the crank arm 31
4b rotates downward at the time of startup, the tip of the discharge arm 31 rotates upward and receives the bundle of straw discharged by the sweeper 24 and guided by the guide rod c projecting diagonally downward from the knot at the receiving part a. The forward rotation of the crank arm 34b causes the crank arm 34b to rotate rearward about the links 37, 37 as shown in FIG. During this ejection operation, a spring 4 is provided between the receiving plate 45 of the binding device 7 and the middle part of the ejection arm 31.
6 is stretched and stretched, the delay drive plate 44 does not push the receiving piece 43', but since the spring 46 pulls the release arm 31 back, the crank arm 34b and gears 42, 43 follow and rotate by θ. move and return to the initial position.

During such a discharging operation, the distal end of the discharging arm 31 forms an ellipse with a small diameter in the vertical direction and a large diameter in the horizontal direction.

Furthermore, when the culm length of the straw is changed, or when it is desired to consciously bind the stock part, the middle part, the ear part, etc., the transmission case 47 in which the gears 9 and 10 are housed is fixed to the threshing device 1. , when the transmission case 26, intermediate shaft 25, and gear box 48 are integrally moved laterally, the cylindrical shaft 13 and shaft 11 attached to the packer shaft 12 are moved.
It expands and contracts, allowing you to easily adjust the binding position.

FIG. 10 shows a binding device 7 equipped with a delay clutch A.
Since the sweeper 24 waits in the middle of the return path of the binder, it does not protrude outward like conventional ones, and can prevent damage due to contact with other objects. It is safe without causing injury, and when performing split cutting, the erect grain culms do not get caught in the sweeper, making it possible to perform light cutting and tying work.

As described above, the present invention connects an idler gear that meshes with a constantly rotating input gear to a needle shaft via a one-turn clutch, and a delay clutch between the needle shaft and the shaft that transmits power to the sweeper. Since the starting point of the sweeper is set on its return path, the sweeper pushes the bundled grain culm to the end of the throwing operation range, improving the ejection action and preventing the tip of the sweeper from protruding into the bundle. Unlike conventional products, the grain does not stop during the discharging process and returns after the throwing dead center, so it is very easy to separate the bundles, and the bundled grain culms may get caught in the sweeper and hang, or the discharging position may be uneven. It never becomes.

Further, the transmission mechanism for the binding device is not subjected to an unreasonable load due to a lag in the activation timing of the needle shaft and the binding section, thereby making it possible to prevent damage to the transmission mechanism and to suppress noise.

[Brief explanation of the drawing]

Fig. 1 is a perspective view, Fig. 2 is a sectional view of the transmission part of the binding device, Fig. 3 is a sectional view of the delay clutch, Fig. 4 is an exploded perspective view of the same as above, and Fig. 5 a, b, c, and d are Figure 6a is an exploded perspective view of the ejection arm drive part, b is an action view of the delay drive plate, Fig. 7 is a plan view of the ejection part, and Figs. 8a, b, and c show the ejection action. A perspective view, FIGS. 9a, b, c, and d are side views showing the binding release function, and FIG. 10 is a plan view of the binder. 12...Patzker shaft, 13...Cylinder shaft, 15...
Gear, 17...Idle gear, 17'...Protrusion, 1
7″...Taper claw, 18...Needle shaft, 19
... Rotating clutch, 20 ... Door, 21 ... Cam plate, 24 ... Sweeper, 25 ... Intermediate shaft, 26
a... Taper claw, 27... Pin, 28... Clutch tube, 31... Release arm.

Claims (1)

[Claims] 1. An idling gear that meshes with a constantly rotating input gear is interlocked with a needle shaft via a one-turn clutch, and a delay clutch is interposed between the needle shaft and a shaft that transmits power to the sweeper. A binding device characterized in that a starting point is set on its return route.