JPH0545146Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is based on the invention, in which the part of the harvested straw grass that is being conveyed in a pinch is attached to the endless rotating chain wound between the front and rear sprockets. At the end of the combing direction, a pair of discharge drums are rotated by power transmitted from the drive shaft of the end sprocket, respectively. The present invention relates to a sorting device for a straw harvester configured to discharge the waste straw grass to the outside of the machine.

[Conventional technology]

In the conventional sorting device, the discharge drum is disposed coaxially with the drive shaft of the end sprocket, and is fixedly mounted so as to rotate at the same speed as the drive shaft.

[Problem that the invention attempts to solve]

Therefore, the discharge drum is driven to rotate at the same speed as the sprocket, that is, the locking pawl. For example, when a large amount of rush is being held and conveyed, it is difficult to comb it out by the locking pawl. The amount of waste grass that is collected is so large that the amount of waste grass that can be discharged to the outside of the machine by the discharge drum is exceeded, resulting in a problem that a large amount of waste grass is mixed into the recovered straw grass bundle. In addition, when the grass is wet due to rain, etc., the grass will stick to it due to moisture, and since the discharge drum has the same speed as the locking claw, the stuck grass will be released. However, it sometimes got mixed into the convergence.

One possible way to solve the above problem is to increase the rotational speed of the discharge drum to improve the discharge processing capacity. Since the position of holding the grass waste was separated from the conveying path by the locking claw, there were disadvantages such as the inability to efficiently release the waste and the need for significant improvements in the support mechanism and drive mechanism.

The present invention focuses on the fact that there is an empty area inside the discharge drum, and aims to increase the discharge processing amount without reducing the discharge efficiency in the discharge action of waste grass and without causing a significant improvement in the structure. It is an object.

[Means for solving problems]

The feature of the present invention is that in the straw harvester sorting device having the above structure, a rotational speed increasing mechanism is interposed between the drive shaft and the discharge drum, and the speed increasing mechanism is disposed on the inner side of the discharge drum. The functions and effects are as follows.

[Effect]

Since the discharge drum is driven by the speed increasing mechanism at a rotational speed higher than the rotational speed of the drive shaft, even if the amount of waste grass combed by the locking pawl is large, the locking will not occur. It is picked up and released at a higher speed than the speed at which it is sent by the claws, and there is no remaining grass waste to be disposed of. Moreover, since the speed increasing mechanism is provided inside the discharge drum, it is possible to set the drive shaft and the discharge drum on the same axis, and the conveyance path of the locking pawl and the clamping position of the discharge drum can be adjusted. can be made to match without causing a decrease in emission efficiency, and there is no change in the external structure, so there is no need for major structural improvements.

[Effect of idea]

Therefore, although the rotational speed of the discharge drum can be increased to improve the capacity for discharging waste grass, it does not require significant structural improvements and does not result in a decrease in discharge efficiency.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 3 and 4, a pair of left and right weeding devices 1, 1 are driven and rotated, and a pair of left and right pulling devices 2 are used to introduce and pull up the planted grass from the weeding devices 1, 1. , 2, a clipper-type reaping device 3 that cuts off the roots of the raised rush grass, a horizontal conveyance device 4 that grips the upper part of the cut grass and sends it laterally, and a roots of the rushes that are sent by the horizontal conveyance device 4. The sorting device 5 rakes out the waste grasses while being locked and conveyed with the side facing forward (right side in Fig. 3), and the grass grass after the sorting process set in a fallen position by the action of the sorting device 5 is tied up. A two-row rice harvesting machine is constructed by connecting a grass harvesting reaping unit A comprising a binding device 6 and a deck 7 for placing bundles of bundled rice grass to a traveling machine body B comprising an agricultural tractor.

As shown in the figure, the traveling body B is used with the driver's seat 8, steering handle 9, etc. of an agricultural tractor turned in the opposite direction with respect to the body of the tractor, and the traveling body B is used with the driver's seat 8, steering handle 9, etc. Power is transmitted through the transmission shaft 10, and the unit is connected so that the ground level can be adjusted by operating the lift arm 11 provided on the tractor.Next, the structure of each device provided in the unit A will be explained. do.

The weeding device 1 includes a rod 1a that is gently curved in a forward downward posture, the front end of which is supported via a ball joint 13, and this rod 1a that draws a spindle-shaped trajectory. It consists of a mechanism 1b that rotates around the axis X and drives the rod 1a to rotate on its own axis, and the front end position of the weeding device 1 on the uncut land side is located at the rear of the other one. . The lifting device 2 includes a pair of upper and lower sprockets (not shown), an endless chain (not shown) wound around these sprockets, a large number of undulating claws 2a provided on the endless chain, and a case 2b that houses these. The horizontal conveying device 4 is composed of a large number of pulleys 4a that rotate about vertical axes, and a pair of clamping belts 4b, 4b that are wound around these pulleys and made of a flexible material so as not to damage the rush. After the waste straw grass is removed and sorted by the sorting device 5, the bundles of straw grass bound by the binding device 6 are discharged onto a deck 7.

As shown in FIGS. 1 and 2, the sorting device 5 has a pair of front and rear sprockets 1 having a vertical axis.
4 and 14, and locking pawls 16 are pivotally attached to the chain 15 at predetermined intervals so as to be able to swing up and down, and the chain 15 is rotationally driven. The structure is such that the cut straw grass, which is pinched and conveyed by the horizontal conveyance device 4, is combed from the part of the plant base side by the locking claws 16 like a hair comb to remove the waste straw grass which is a short culm. Then, on the front side of the machine body, that is, at the end of the locking pawl 16 in the combing direction, there is a sprocket 1 on the end side.
A pair of discharge drums 18a and 18b are provided which are rotated by power being transmitted from the drive shaft 17 of No. 4, and each of the discharge drums 18a and 18b is configured to pinch and discharge the waste grass to the outside of the machine.

One of the discharge drums 18a, 18b is disposed coaxially with the drive shaft 17 and is driven to rotate, while the other 18b is pressed against the outer circumferential surface of the drive-side discharge drum 18a and is subjected to frictional force. It is configured to rotate in conjunction with each other. The drive shaft 17 and the drive side discharge drum 18a
A rotation speed increasing mechanism C is interposed between the discharge drum 18a and the rotation speed increasing mechanism C, which is disposed on the inner side of the discharge drum 18a.

More specifically, as shown in FIG. 1, the boss portion 19 of the discharge drum 18a is fitted onto the drive shaft 17 via a bush 20 so as to freely rotate, and the A first small diameter gear 2 meshing with a first large diameter gear 21 fixed to the shaft 17
2, and a second small diameter gear 24 that meshes with a second large diameter gear 23 that is interlocked with the first small diameter gear 22, and the speed increasing mechanism C is constituted by the first small diameter gear 22 and the second large diameter gear 23. This is fitted onto the driven shaft 25 with spun lines, and this driven shaft 25 is attached to the support case 2.
The upper bearing support portion 27 extending from the drive shaft 1
7 and a lower bearing support portion 29 connected to a support ring 28 that is loosely fitted to the lower bearing support portion 29 . Said second
The small diameter gear 24 is loosely fitted onto the drive shaft 17,
Moreover, it is interlocked and connected to the boss portion 19 of the discharge drum 18a. By configuring like this,
The rotational speed of the drive shaft 17 is determined by the gears 21, 22,
23 and 24, the discharge drum 18a can be driven at a higher speed than the locking pawl 16.

Further, on the upper side of the discharge drums 18a and 18b, a rubber rotary blade 31 is provided which is rotatably driven around the horizontal axis from the drive shaft 17 via a bevel gear mechanism 30, and removes debris that remains on the upper side. It is configured to scrape out grass into the fuselage, increasing its ability to remove grass waste.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the straw harvester sorting device according to the present invention, and FIG. 1 is a vertical cross-sectional rear view of the main parts, FIG. 2 is a back view of the waste straw discharge section, and FIG. 3 is an overall plan view of the straw harvester. , FIG. 4 is an overall side view of the straw harvester. 14, 14... Sprocket, 15... Chain, 16... Locking pawl, 17... Drive shaft, 18a,
18b...discharge drum, C...speed increasing mechanism.

Claims (1)

[Scope of utility model registration request] The cut straw grass that is being held and conveyed is combed from the side of the plant from the holding part by a large number of locking pawls 16 attached to an endless rotation chain 15 wound between the front and rear sprockets 14, 14, and the waste straw grass is combed out. A pair of ejecting drums 18a, which are configured to remove the material and are rotated by power being transmitted from the drive shaft 17 of the end sprocket 14 at the end in the combing direction.
18b, the straw harvester sorting device is configured to discharge the waste straw to the outside of the machine, and a rotational speed accelerating mechanism C is interposed between the drive shaft 17 and the discharge drum 18a, and ,
This speed increasing mechanism C is arranged inside the discharge drum 18a in a straw harvester sorting device.