JPH0836A - Device foe driving drum conveyor of harvester - Google Patents

Abstract

PURPOSE:To provide a device for driving a drum conveyor of a harvester, capable of preventing the slip from occurring and reducing rotating and meshing sounds, excellent in operating efficiency and useful for harvesting subterranean crops such as a beet by bringing a driving sprocket into contact with an outer peripheral surface, etc., of the drum conveyor, meshing and holding both. CONSTITUTION:This device for driving a drum conveyor of a harvester is obtained by forming an engaging groove 7, formed along the peripheral surface of the drum conveyor 3 and having engaging holes bored at a prescribed pitch and a driving sprocket 14 having toothed parts at the same pitch as that of the engaging holes formed in the drum conveyor 3, covering the surface of either or both of the driving sprocket 14 and engaging groove 7 of the drum conveyor with an elastic material 17 formed of a material, etc., having cushioning properties such as a rubber or a flexible polyvinyl chloride, bringing the driving sprocket 14 into contact with the outer or inner peripheral surface of the drum conveyor 13, meshing and holding both.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a drum conveyor which lifts and conveys a crop separated from mud in a harvester used for harvesting an underground crop such as beet.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a conventional harvester of this type is provided with a digging blade 2 at the lower front end of a machine body 1 towed by a tractor (not shown). By connecting the drum conveyor 3 mounted on the rear part of the drum via the separating conveyor 4 composed of a rod conveyor or the like, the crop dug by the digging blade 2 is conveyed to the upper rear part by the separating conveyor 4 to be a crop. After separating and removing the attached mud, only the crop is put into the drum conveyor 3. Then, the upper end of the drum conveyor 3 and the body 1
The crops are put into the storage tank 5 by connecting the storage tanks 5 mounted on the storage tanks 5 with the conveyor 6.

A drum conveyor 3 for lifting and transporting the crops.
In the conventional drive, as shown in FIG. 6, an engaging groove 7 is provided along the outer peripheral surface of the drum conveyor 3, and a drive disk 8 that is rotationally driven by the power from a tractor (not shown) is engaged. Is held in pressure contact with the drum conveyor 3 to drive the drum conveyor 3 to rotate.

Here, in order to ensure the drive of the drum conveyor 3 by the drive disk 8 having the outer peripheral surface as the uneven surface as shown in FIG. 7, the engagement is performed as shown in FIGS. 8A and 8B. The bottom surface of the groove 7 is formed as an uneven surface to increase the frictional force between the drive disk 8 and the engaging groove 7.
In FIG. 6, 9 is a drum receiving roller and 10 is a guide plate.

When the digging work speed is increased and the amount of crops introduced into the drum conveyor 3 is increased, the driving torque of the drum conveyor 3 is increased. Then, even in a normal dry field, the drive disk 8 and the drum conveyor 3
Slip occurs between the two. In addition, the slip becomes severe because the mud separation performance deteriorates when the field is wet, such as when the field is wet, such as when it is exposed in the early morning, after rain, and when it is lightly rained.
For this reason, the lifting / conveying function of the drum conveyor 3 is deteriorated, and the crops put into the drum conveyor 3 cannot be conveyed and spilled down into the field, or the guide plate 10 is used.
There is a problem that the digging work cannot be performed because it will be damaged by such as.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drive device for a drum conveyor which can reliably drive the drum conveyor in a harvester.

[0007]

Means for Solving the Problems In the present invention, a means for solving the problems is to provide a harvester equipped with a drum conveyor for lifting and conveying an underground crop dug from a field, along a peripheral surface of the drum conveyor. A driving sprocket having an engaging groove formed by forming an engaging hole at a predetermined pitch and a tooth portion having the same pitch as the pitch of the engaging hole provided in the drum conveyor, and the driving sprocket and Either one or both surfaces of the engagement groove of the drum conveyor was covered with an elastic material, and the driving sprocket and the outer peripheral surface or the inner peripheral surface of the drum conveyor were brought into contact with each other to hold them in mesh with each other. It is characterized by that.

[0008]

Since the drive sprocket 14 is pressed and held in the engagement groove 7 of the drum conveyor 3 through the elastic material 17 to hold the tooth portion 16 in the engagement hole 13 of the engagement groove 7, As the drive sprocket 14 rotates, the drum conveyor 3 is reliably rotated. The mud adhering to the engaging groove 7 is pressed against the bottom of the engaging groove 7 by the elastic force of the drive sprocket 14, and is pushed out from the engaging hole 13 of the engaging groove 7 and discharged.

Therefore, even when the work is performed in a wet field, the teeth 16 of the driving sprocket 14 and the engagement holes 13 of the drum conveyor 3 are kept in mesh with each other, so that a slip between the two occurs. To be prevented. Further, since the contact pressure between the drive sprocket 14 and the drum conveyor 3 is substantially constant, the meshing state between the tooth portion 16 of the drive sprocket 14 and the engagement groove 7 of the drum conveyor 3 can be stabilized and the rotation can be improved. Sounds and meshing sounds are also low.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing a driving device for a drum conveyor, and FIG. 2 is a side view of FIG. In these figures,
Portions having the same functions as those of the conventional example shown in FIGS. 5 to 8 are designated by the same reference numerals, and detailed description thereof will be omitted.

In these figures, an engaging groove 7 is provided on the outer peripheral surface of the drum conveyor 3 formed of a bucket.
As shown in FIGS. 3A and 3B, a plurality of engagement holes 13 are formed in the bottom surface of the engagement groove 7 at a predetermined pitch.

As shown in FIG. 4, the drive sprocket 14 meshing with the engagement hole 13 is provided with teeth 16 on the outer peripheral surface of the drive disk 15, and the valleys of the teeth 16, that is, the drive disk. An elastic material 17 made of rubber or soft vinyl chloride is baked on the surface of 15. The tooth portion 16 projects from the elastic material 17. The pitch of the tooth portions 16 is the same as the pitch of the engaging holes 13.

Although the driving sprocket 14 of the embodiment has a structure in which the tooth portion 16 is projected from the elastic material 17, the entire sprocket including the tooth portion 16 may be covered with the elastic material 17. Further, in the embodiment, the driving sprocket 14 is used.
Although the elastic material 17 is covered or laminated only on the above, the engaging groove 7 of the drum conveyor 3 can also be covered with the elastic material 17. In short, the elastic material 17 covers either the drive sprocket 14 or the drum conveyor 3.

In addition to this, in the embodiment, the engaging groove 7 is provided on the outer peripheral surface of the drum conveyor 3, and the driving sprocket 14 is brought into contact with the outer peripheral portion of the drum conveyor 3 to rotate the drum conveyor 3. However, it is also possible to provide the engagement groove 7 on the inner peripheral surface of the drum conveyor 3, and in this case, the drive sprocket 14 is brought into contact with the inner peripheral surface of the drum conveyor 3.

Therefore, when the driving sprocket 14 is engaged in the engagement groove 7 in a pressed state and rotationally driven, the tooth portion 16 meshes with the engaging hole 13 and rotationally drives the drum conveyor 3. The drive sprocket 14 is rotationally driven as the machine body advances by receiving power from a tractor (not shown) as in the conventional case.

In the drum conveyor driving device constructed as described above, the elasticity of the elastic material 17 is used to press and hold the driving sprocket 14 on the drum conveyor 3 to hold them in mesh with each other. As the sprocket 14 rotates, the drum conveyor 3 is reliably driven to rotate.

Further, the mud adhering to the engaging groove 7 is the elastic material 1
7 is pressed against the bottom of the engaging groove 7 by the elastic force of 7, and is pushed out from the engaging hole 13 provided on the bottom surface of the engaging groove 7 to be discharged. Also, since the meshing of the tooth portion 16 of the drive sprocket 14 and the engagement hole 13 of the engagement groove 7 is maintained, slip between them is prevented.

In addition to this, the contact pressure between the drive sprocket 14 and the engaging groove 7 becomes substantially constant due to the elastic deformation of the elastic material 17. For this reason, the engagement state of the drive sprocket 14 and the engagement groove 7 can be stabilized, the rotation noise of the drive sprocket 14 and the drum conveyor 3 and the engagement noise of both can be reduced, and further, metal fatigue, metal It is also possible to prevent wear and damage due to mud stacking.

In the embodiment, the engaging hole 13 of the drum conveyor 3 and the tooth portion 16 of the driving sprocket 14 are rectangular in cross section, but they may be circular or oval. .

[0020]

According to the present invention, a drive is provided in which engaging holes are formed in the engaging groove formed along the peripheral surface of the drum conveyor at a predetermined pitch, and tooth portions are meshed with the engaging holes. An elastic material is provided on the surface of the driving sprocket, and the mud adhering to the engaging groove is discharged from the engaging hole by pressing and holding the driving sprocket in the engaging groove. Therefore, even when the field is wet, slip is prevented because the driving sprocket and the drum conveyor are kept in mesh, and the contact pressure between the sprocket and the conveyor is almost constant, The meshing state of the drive sprocket and the drum conveyor can be stabilized, and the rotation noise and meshing noise of both can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a drum conveyor drive device.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view and B is a sectional view showing an engagement groove of a drum conveyor.

FIG. 4 shows a driving sprocket, where A is a front view and B is a front view.
Is a side view.

FIG. 5 is a schematic side view showing an example of a harvester to which the present invention is applied.

FIG. 6 is a front view showing a conventional example of a drum conveyor drive device for a harvester.

FIG. 7 is a side view of the drive disk shown in FIG.

FIG. 8 shows the engagement groove shown in FIG. 6, where A is a front view and B is a sectional view.

[Explanation of symbols]

 1 Machine Body 2 Digging Blade 3 Drum Conveyor 4 Separation Conveyor 5 Storage Tank 6 Transfer Conveyor 7 Engagement Groove 8 Drive Disc 9 Drum Receiving Roller 10 Guide Plate 13 Engagement Hole 14 Drive Sprocket 15 Drive Disc 16 Teeth 17 Elastic Material

Claims (3)

[Claims] 1. A harvester provided with a drum conveyor for hoisting and transporting an underground crop dug out of a field, wherein an engaging hole is formed along a peripheral surface of the drum conveyor, and engaging holes are opened at a predetermined pitch. Providing a mating groove and a driving sprocket having tooth portions having the same pitch as the pitch of the engaging holes provided in the drum conveyor, one or both surfaces of the driving sprocket and the engaging groove of the drum conveyor are provided. A drum conveyor drive device for a harvester, characterized in that the drum sprocket is covered with an elastic material and is brought into contact with either the outer peripheral surface or the inner peripheral surface of the drive sprocket and the drum conveyor to hold them in mesh with each other. 2. The harvester according to claim 1, wherein the drive sprocket has an elastic layer made of an elastic material formed in a valley portion of the tooth portion, and the tooth portion is projected from the elastic layer. Drum conveyor drive. 3. The harvester drum conveyor drive device according to claim 1, wherein the elastic material is formed of a cushioning material such as rubber or soft vinyl chloride.