JPS6238515Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a power transmission mechanism for an agricultural bailer.

The current situation of agricultural bailers in Japan is that most of them are large and heavy imported products, so they are still at the practical stage because they have a large feeding radius and are being introduced into rice fields for collection work when combined rice straw is turned into feed. Even if the vehicle were moved, the vehicle would collapse under the weight of the vehicle, making it difficult to drive.Furthermore, when traveling at low speeds, problems such as the inability to easily change the speed of the tines in the pick-up section occurred.

In order to solve the above-mentioned problems, the present invention provides a structure that is compact and lightweight, and also allows for easy gear shifting of the pickup section.

The configuration in which the present invention is implemented will be explained below based on the drawings.

A denotes a compression molding section, in which a main gear box 3 and a plunger 13 that reciprocates the bail case 8 are installed.

Reference numeral 16 denotes a transmission box, which is protruded from the outer wall of the bail case 8 on the pick-up side.

The pick-up section B has rotating tines 31 and is arranged laterally orthogonally to the compression molding section A.

C is a feeder section, which is equipped with an inner fork 17 and an outer fork 20 that serve to feed the picked up raw material to the bale case 8.

Reference numeral D denotes a binding section, which is composed of a binding unit 25, a measure wheel 30, an indicator rod 29, a clutch 22, and the like.

An input shaft 1 to which a flywheel 2 is attached is provided in front of the main gear box 3, and a transmission main shaft 4 is provided projecting left and right from both side walls. Reference numeral 10 denotes a crank arm, and a connecting rod 12 connected to a plunger 13 is fixed to the tip of the crank arm by a crank pin 11. Reference numeral 15 denotes a feed crank, the tip of which is connected to the crank pin 11 described above, and the base of which is connected to the feed shaft 43 of the transmission box 16. This feed shaft 43 is constructed concentrically with the transmission main shaft 4.

18 is a driving sprocket, and transmission box 16
Power is input through the universal joint to rotate the inner fork 17, and at the same time, the sub sprocket 19 is moved by the transmission chain 36 to rotate the outer fork 20. The fork movement timing of each of the inner fork 17 and the outer fork 20 and the reciprocating movement timing of the plunger 13 are adjusted by the interlocking connection between the universal joint base and the driving sprocket 18. Reference numeral 21 is a crank rod which applies input to a support shaft that is concentric with drive sprocket 18 to drive feeder gearbox 37.

22 turns on the binding unit 25 with the clutch,
The locking piece 24 and the stopper 23 are released via the indicator rod 29 by sensing the molding amount of the measure wheel 30 and turned on (shown in the release position in the drawing).

Reference numeral 5 denotes an output pulley, which is fixed to the end of a transmission main shaft 4 protruding from the outer wall of the main gear box 3, and transmits power to an input pulley 7 via a belt 6.

The bearing boss 38 is supported on the bottom plate of the bail case 8 by a pivot 40, and is appropriately adjusted and tensioned by a tensioning rod 34. Reference numeral 35 denotes a spacer inserted in the middle of the output pulley 5, and by changing the thickness of the spacer, the effective diameter ratio of the belt 6 changes. Input pulley 7
The shaft is connected to a rotation shaft 33 of the pickup section B via a universal joint. Reference numeral 32 has a horizontal axis, and a plurality of tines 32 are installed horizontally around the rotating shaft 33, and a large number of tines 31 are arranged radially. The angle of the tines 31 is controlled by the locus of the guide groove 39 into which the cam roller is fitted. FIG. 4 shows another embodiment in which a coil spring 42 is incorporated into the tension rod 34 of the input pulley 7.

Next, the effect will be explained.

Tow rod 41 at the rear of the tractor (not shown)
When the power is input to the input shaft 1 using the universal joint and introduced into the field, the main
The plunger 13 is reciprocated by the crank arm 10 connected to one end of the transmission main shaft 4 of the gearbox 3, and the transmission box 16 is driven via the feed crank 15, causing the inner fork 17 and the outer fork 20 to swing. be moved. The feeder gear box 37 provided at the rear of the inner fork 17 is connected to the driving sprocket 18.
The same rotational power is supplied as.

On the other hand, the output pulley 5 on the outside of the main transmission shaft 4 of the main gearbox 3 constantly rotates the rotating shaft 33 of the pick-up section B via the belt 6, picks up raw materials (for example, combine straw) with the tines 31, and transfers the material to the feeder. I will guide you to section C. Therefore, the feeder section C feeds the raw material into the bale case 8 using a fork, and compression molds it using the plunger 13. As the raw materials are further molded and transferred, the measure wheel 30 senses the molding amount, and when a preset amount is reached, the stopper 23 of the clutch 22 is released via the indicator rod 29, and the binding unit 25 is released. drive.

Regarding the circumferential speed of the pick up tine 31 for raw materials, it is optimal to increase the speed to around 30% of the working speed, and although the working speed for collecting rice straw from paddy fields is lower than that for pasture, the PTO rotation speed is Since it is constant, the circumferential speed of the pick-up tine 31 is relatively fast, and the pick-up performance is impaired. Therefore, in paddy fields with poor ground, the ratio between the output pulley 5 and the input pulley 7 is reduced in accordance with the working speed, and the vehicle speed and tine circumferential speed ratio are made constant. The pulley can be easily changed by loosening the tension rod 34 and thinning the spacer 35 of the output pulley 5 or replacing it with a suitable pulley, and this can be done simply by adjusting the tension rod 34.

With the structure described above, the timing of the plunger, fork, and binding unit is mechanically reliable, and the device is compact. Furthermore, since the input pulley is equipped with a tensioning device, the circumferential speed of the pick-up tine can be easily changed independently, increasing the versatility of the work.

[Brief explanation of the drawing]

Fig. 1 is a side view of the present invention, Fig. 2 is a power transmission diagram, Fig. 3 is a sectional view of the main part, and Fig. 4 is another embodiment of the tensioning device. Pickup section, C
...Feeder part, D... Binding part, 1... Input shaft, 2... Flywheel, 3... Main gear box, 4... Transmission main shaft, 5... Output pulley, 6
... Belt, 7 ... Input pulley, 8 ... Bale case, 9 ... Balance wheat, 10 ... Crank arm, 11 ... Crank pin, 12 ... Connection rod, 13 ... Plunger, 14 ... Cutter , 15...Feed crank, 16...Shift box, 17...Inner fork, 18...Drive sprocket, 19...Sub-sprocket, 20
... Outer fork, 21 ... Crank rod, 22 ... Clutch, 23 ... Stopper, 2
4... Locking piece, 25... Binding unit, 26...
Braking plate, 27... Connecting rod, 28... Support shaft, 29...
...Indicator stick, 30...Measure wheel, 31...
Tine, 32...horizontal axis, 33...rotation axis, 34...
...Tension rod, 35...Spacer, 36...Transmission chain, 37...Feeder gearbox, 38...
... Bearing boss, 39 ... Guide rod, 40 ... Pivot, 4
1... Traction rod, 42... Coil spring, 43... Feed shaft.

Claims (1)

[Scope of utility model registration request] In an agricultural bailer equipped with a compression molding section, a pick-up section, a feeder section, and a bundling section,
A main gearbox is provided with a transmission main shaft protruding from both side walls, the crank arm and the feed crank are driven by the inner shaft end of the transmission main shaft, and the outer shaft end of the transmission main shaft is used to drive the crank arm and the feed crank. A power transmission structure for an agricultural bailer, characterized in that the input pulley of the pick-up section is configured to be driven, and the input pulley is equipped with a tensioning device.