JPS6330736Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a conveyor device for an agricultural machine, for example, a conveyor device for use in an excavator to transport agricultural products while shaking off soil.

(Prior Art) Conventionally, an excavator is equipped with at least one set of conveyor devices, but this type of conveyor device usually has a drive shaft ( Alternatively, a drive shaft and an interlocking shaft (these are collectively referred to as the drive shaft in this specification) are mounted horizontally so as to be rotatable, and sprockets are fixed to both sides of the drive shaft in the axial direction. In many cases, a structure is adopted in which an endless band formed by supporting a large number of horizontal rods between opposing chains is suspended between the sprockets so that it can rotate freely.

As described in Japanese Utility Model Publication No. 44-27298, a flange with a spigot is attached to the drive shaft protruding into the frame so as to be slidable in the axial direction at a fixed interval, and this flange with a spigot is attached to the side of the frame. There is also a structure in which, after sliding on the drive shaft, a drive pulley is interposed on the drive shaft to align its shaft center, and the flange with the pilot is slid on the drive pulley side, and the pilot is fitted into the boss of the drive pulley. Are known.

(Problems to be Solved by the Invention) According to the conveyor device, the drive shaft consists of one through shaft, which is rotatably suspended horizontally between the frames via a bearing body. If you want to replace the pitch spacing of the many horizontal bars that make up the machine with an endless band made up of horizontal bars at intervals that match the work purpose, you will have to pull out the drive shaft.
Due to its assembly structure, it takes a lot of time and effort to pull out the drive shaft and attach/detach the endless band.
Since the sprocket that rotates around the endless band is fixed to the drive shaft, it has the drawback that it is almost difficult to attach and detach the sprocket to match the selected endless band.

Further, according to the structure described in the above-mentioned publication, the length between the bosses of the drive pulley, the distance between the inner ends of the drive shaft between the bosses, and the length of the flange with a spigot that slides on this drive shaft. High precision is required to set the spacing, and it takes a lot of work to assemble it in a narrow frame.Furthermore, the drive pulley is a special one that matches the width of the endless belt, so it is difficult to set the spacing to match the width of the endless belt. It cannot be adjusted or set.

Therefore, the present invention was developed in view of these points, and it is possible to easily attach and detach the sprocket to a selected endless band and the sprocket that matches the rotation of this endless band without pulling out the drive shaft, and to change the mounting position. This makes it possible to reliably achieve the work purpose with an endless belt that suits the work purpose, and also to make it possible to easily replace the sprocket without replacing the drive shaft in the event of wear and tear on the sprocket. The object of the present invention is to provide a conveyor device for agricultural machinery that has the following features.

[Structure of the idea]

(Means for Solving the Problems) The conveyor device for agricultural machinery of the present invention includes a pair of connecting base shafts 11 that are rotatably horizontally supported relative to a frame 1 and have a keyway 13 in the axial direction of the inner end; A drive shaft 15 having a key groove 16 disposed between the inner ends of the pair of connecting base shafts 11 and communicating with the key groove 13 in the axial direction of both ends thereof; The drive shaft has a key 17 that is removably fitted into the key groove 13 of the opposing connecting base shaft 11 and a key groove 24 that fits this key 17, and the driving shaft is connected between the inner end portions of the opposing connecting base shaft 11. 15 and a sprocket 19 that supports an endless band 28 in which a large number of horizontal rods 30 are arranged in parallel between opposing endless chains 29, and the left and right sprockets 19 connect to circular gears when coupled. 2
This pair of divided gears 26 includes a pair of connecting plates 20 that sandwich and connect the connecting portion 18 between the drive shaft 15 and the connecting base shaft 11. Moreover, the key groove 24 is formed in one of the connecting plates 20.

(Function) In the conveyor device for agricultural machinery of the present invention, when replacing the endless band 28, the pair of connecting plates 20 that sandwich the connecting portion 18 are separated, and the key is removed from the key grooves 13, 16 of the connecting portion 18. By taking out sprocket 17, sprocket 19 is removed from connecting part 18.
is easily removed, and the drive shaft 15 is easily removed from between the opposing connecting base shafts 11, so that
The endless band 28 can be easily removed. Then, with the drive shaft 15 inserted into the front and rear parts of the selected endless band 28 made of horizontal rod pitches that match the work purpose, both ends of the drive shaft 15 are placed between the inner ends of the opposing connecting base shafts 11. The key 17 is fitted into the key grooves 13 and 16 of the connecting portion 18, and a pair of connecting plates 20 are fitted from above and below to the connecting portion 18, and the split gear 26 is axially moved. The split gear 26 is slid and fixed at a position matching the width of the endless band 28 so that it can rotate around the endless band 28. As a result, the endless band 28 can be attached and removed as desired, and the endless band 28 is rotatably suspended on the drive shaft 15 via each sprocket 19.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In the figure, reference numeral 1 denotes a main frame as a plate-shaped frame arranged oppositely at a predetermined interval on both the left and right sides, and a transmission 3 having an input shaft 2 is provided between the front ends of this main frame 1. In addition, between the rear end portions of the main frame 1, a pair of plate-like frames 4, which are connected frames 4, are arranged in a direction perpendicular to the rear end portions of the main frame 1, spaced apart from each other at a predetermined interval.

Further, a first conveyor device 5 is disposed between the main frames 1, and a second conveyor device 6 is disposed between the connection frames 4. The first conveyor device 5 is rotatably connected to the first output shaft 7 of the transmission 3 via an interlocking medium 8, and the second conveyor device 6 is An interlocking medium 1 is connected to the second output shaft 9 of the transmission 3.
0, and are connected to each other so that they can rotate freely.

Next, the first and second conveyor devices 5,
Reference numeral 6 indicates that a pair of relatively short connecting shafts 11 are provided as bearing bodies at the front and rear ends of the left and right main frames 1 and at one end and the other end of the front and rear connecting frames 4, respectively. 12, the opposing connecting shafts 11
A keyway 13 is formed in the axial direction in each of the protruding inner end portions that protrude inward from the main frame 1 and the connecting frame 4. A driving pulley 14 serving as a driving mechanism, which constitutes one of the interlocking media 8, is fixed to the outwardly projecting outer end.

Further, a drive shaft 15 is interposed between the inner ends of each of the opposing connecting base shafts 11, and has a key groove 16 formed in the axial direction at both ends thereof, which communicates with the key groove 13.
A key 17 is removably fitted into the key groove 16 at both axial ends of each drive shaft 15 and each key groove 13 of the opposing connecting base shaft 11, and the drive shaft 15 is the opposing connection axis 1
1, and each connecting portion 18 has a sprocket 19 formed separately.
are removably fitted and locked. This sprocket 19 is connected to the connecting portion 1 as shown in FIG.
A pair of connecting plates 20 that sandwich and connect 8 from above and below.
The pair of connecting plates 20 have a semicircular engagement recess 21 that has a cylindrical shape as a whole when the inner end portion of the connecting shaft 11 and both end portions of the drive shaft 15 are connected. A connecting piece 22 is horizontally formed on both left and right sides of the engagement recess 21, and a plurality of mounting holes 23 are formed in the left and right connecting pieces 22.
are bored facing each other, and a key groove 24 in which the key 17 is fitted is provided in the engagement recess 21 of one of the connecting plates 20.
Further, a semicircular split gear 26 consisting of a plurality of teeth constituting a circular gear 25 as a whole when coupled is integrally protruded from one end of the pair of connecting plates 20, and each of the above-mentioned The connecting portion 18 is held between a pair of connecting plates 20 via a key 17, and the opposing left and right connecting pieces 22 of the pair of connecting plates 20 are joined, and each mounting hole 23 of the left and right connecting pieces 22 is joined. They are connected by a bolt 27 inserted into the bolt 27 and a nut attached thereto.

Further, an endless belt 28 is rotatably suspended between the front, rear, left and right sprockets 19, and this endless belt 28 is constructed by horizontally extending a large number of horizontal rods 30 in parallel at predetermined intervals between the opposing endless chains 29. It is configured as follows. In the figure, 31 is a connecting mechanism, 32 is a container for transporting agricultural products, and 33 is a digging blade.

In this structure, the coupling mechanism 31 of the machine is coupled to the suspension mechanism of the tractor, and the input shaft 2 is coupled to the power take-off shaft of the tractor via a universal joint. and,
When this machine is towed by a tractor and the input shaft 2 is interlocked with the power from the power output shaft of the tractor, the first output shaft 7 and the second output shaft 9 of the transmission 3 rotate. At the same time, the endless belts 28 of the first and second conveyor devices 5 and 6 are rotated in the conveying direction via interlocking media 8 and 10 that are interlocked and connected to the first and second output shafts 7 and 9. Ru. As a result, the agricultural products a dug up by the digging blade 33 are carried onto the first conveyor device 5, transported backwards by the endless belt 28 while sieving off the soil, and further conveyed to the second conveyor device 5. The agricultural products a carried onto the conveyor device 6 are conveyed laterally by the endless band 28 while further sieving off soil, and are carried into the container 32 from the carrying-out end.

Next, when replacing the endless band 28, each bolt 27 of each sprocket 19 is pulled out, the pair of connecting plates 20 holding the connecting part 18 are separated, and the key is removed from the key grooves 13, 16 of the connecting part 18. 1
Take out 7. As a result, the sprocket 19 can be easily removed from the connecting part 18, and the drive shaft 15 can be attached to the connecting base shaft 11 at both ends.
Therefore, the endless band 28 can be easily removed from the drive shaft 15. Then, a drive shaft 15 is installed in the front and rear of the selected endless band 28 consisting of horizontal rod pitches according to the purpose of work.
is inserted, both ends of this drive shaft 15 are brought into contact between the inner ends of the opposing connecting base shaft 11, and the key 17 is fitted into the key grooves 13, 16 of the connecting portion 18, and this connecting A pair of connecting plates 20 are fitted into the portion 18 from above and below, and the split gear 2
6 in the axial direction to connect the split gear 26 to the endless band 28.
Set the position according to the width of the endless band 28 so that it can be rotated, and then tighten the opposing connecting piece 22 again with the bolt 2.
7. Tighten with nut. This results in
The endless belt 28 is attached and detached to a desired one, and the drive shaft 15 is connected and clamped between the connecting shafts 11 by a pair of connecting plates 20 via the key 17, and the sprocket 19 rotates the selected endless belt 28. Therefore, the endless band 28 is easily rotatably suspended on the drive shaft 15 via the sprocket 19.

[Effect of idea]

According to the present invention, the sprocket 19 that rotates around the endless band 28 is constituted by the split gear 26 formed on a pair of connecting plates 20, and the pair of connecting plates 20 are connected to each other via the key 17. Basic axis 1
Since the drive shaft 15 is removably connected and clamped between the sprockets 1 and 1, and the position of the sprocket 19 is changed by sliding the pair of connecting plates 20 in the axial direction, both the endless band 28 and the sprocket 19 Or if one of them needs to be removed and replaced,
While the opposing connecting shaft 11 remains supported by the frame 1, the drive shaft 15 can be easily attached to and removed from the connecting shaft 11 without being pulled out from the frame 1. It can be easily attached to and removed from the endless band 28 consisting of 30 rods and the sprocket 19 that matches the rotation of the endless band 28, and this sprocket 1
By sliding the mounting position of the sprocket 9 and appropriately selecting and setting the sprocket 19, the sprocket 19 can be rotated around the endless belt 28 at an optimum position that will not damage the agricultural products. In the event of wear and tear, the drive shaft 15
Only the sprocket 19 can be easily replaced without replacing the sprocket 19, and each of these connecting members can be molded without requiring special high precision unlike the conventional structure for attaching and detaching the drive pulley. It is possible to provide a highly practical conveyor device that is easy to manufacture and can reliably achieve the purpose of work with an endless belt that suits the purpose of the work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a plan view of the agricultural machine, FIG. 2 is a sectional view of the conveyor device, and FIG. 3 is an exploded perspective view of the sprocket. 1...Frame, 11...Connection axis, 13...
Keyway, 15... Drive shaft, 16... Keyway, 17
...Key, 18...Connection part, 19...Sprocket, 20...Connection plate, 24...Keyway, 25...
Gear, 26...Divided gear, 28...Endless band, 29
... Endless chain, 30 ... horizontal bars.

Claims (1)

[Claims for Utility Model Registration] A pair of connecting shafts 11 that are rotatably horizontally mounted relative to the frame 1 and have a keyway 13 in the axial direction of the inner end.
A drive shaft 15 having a key groove 16 disposed between the inner ends of the pair of connecting base shafts 11 and communicating with the key groove 13 in the axial direction of both ends thereof; and a key groove 16 at both ends of the drive shaft 15. and a key 17 removably fitted into the key groove 13 of the opposing connecting base shaft 11, and a key groove 24 into which this key 17 is fitted, and between the inner ends of the opposing connecting base shaft 11. Drive shaft 1
5 and a sprocket 19 that supports an endless belt 28 in which a large number of horizontal rods 30 are arranged in parallel between opposing endless chains 29, and the left and right sprockets 19 are connected to circular gears when coupled. 25, and the pair of divided gears 26 have a pair of connecting plates 20 that sandwich and connect the connecting portion 18 between the drive shaft 15 and the connecting base shaft 11. A conveyor device for an agricultural machine, characterized in that the keyway 24 is formed in one of the connecting plates 20.