JPH0728118U - Gears for bar conveyor - Google Patents

Abstract

(57) [Abstract] [Purpose] When the bar conveyor is driven, the outer peripheral tooth profile of the gear collides with the end of the metal rod, generating noise, and the collision vibrates the bar conveyor and damages the root vegetables to be conveyed. SUMMARY OF THE INVENTION It is an object of the present invention to provide a gear for an idler of a bar conveyor that solves the above-mentioned drawbacks and enables smoother transport of root vegetables. [Structure] An outer peripheral tooth profile portion 1 which meshes with a convex row 12 of a bar conveyor B is formed of hard rubber. A bearing 3 is loaded in a shaft hole 2 opened at the center of the outer peripheral toothed portion 1. The left and right fixed shafts 35 are provided in a cantilever manner on the machine frame of the harvester, and the outer peripheral tooth profile 1 is rotatably supported on the free end side of each fixed shaft 35 via the bearing 3. The metal rod end 21 and the tooth 1a collide with each other as the outer peripheral tooth profile 1 and the convex row 12 mesh with each other, but the outer peripheral tooth profile 1 itself absorbs and buffers the impact to prevent noise and vibration from occurring. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gear for a bar conveyor, and more particularly to a gear used as an idler for a bar conveyor used when harvesting root vegetables and the like.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a bar conveyor is known for removing root vegetables that have been dug up with a soil by a harvester while transporting the soil, and for sorting according to size. In a typical bar conveyor, a large number of convex portions are provided on the upper surface of two parallel rubber belts at regular intervals, and the concave portions between the adjacent convex portions in the convex portion row are formed at the end of the metal rod. It has a structure in which a large number of metal rods are installed between the two belts at fixed intervals as a part fixing surface.It is hung on the drive side and driven side sprockets and is used as an idler at the lower side intermediate part. Used with the gears meshed. The idler gear is used to smoothly convey root vegetables, and is integrally molded of a desired metal material.The outer peripheral tooth profile is meshed with the convex row on each of the above belts, and the bottom side of the bar conveyor is engaged. Prevents slack.

[0003]

[Problems to be solved by the device]

 However, since the conventional idler gear described above is integrally formed of a metal material, and the end portion of the metal rod is fixed to the concave portion in the convex row in which the outer peripheral tooth portion meshes, When the bar conveyor is driven, the outer peripheral tooth profile collides with the end of the metal rod to generate noise, and the collision may vibrate the bar conveyor to damage the root vegetables to be conveyed. The present invention has been made in view of such conventional circumstances, and an object of the present invention is to provide a gear capable of buffering a collision with the end of a metal rod fixed in the convex row. is there.

[0004]

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a plurality of convex portions on the upper surfaces of two parallel belts at regular intervals, and a metal is provided in the convex portion row. A gear for a bar conveyor, in which a plurality of metal rods are installed at fixed intervals between the belts with the ends of the rods fixed, and an outer peripheral tooth profile portion that meshes with the convex row of each of the belts. Is made of hard rubber.

The means for fixing the ends of the metal rods in the row of convex portions includes the concave portion between the adjacent convex portions in the row of convex portions as the fixing surface, and the end portion of the metal rod on the fixing surface. A conventional general method of fixing with a screw or the like, or a method of embedding the metal rod end portions in the respective convex portions of the convex portion row by embedding and integrating them is conceivable.

[0006]

[Action]

 According to the above configuration, the outer peripheral tooth profile itself absorbs and buffers the shock caused by the collision between the outer peripheral tooth profile part that meshes with the convex part array and the end of the metal rod fixed in the convex part array. Prevent noise and vibration.

[0007]

【Example】

 An embodiment of the gear of the present invention will be described below with reference to the drawings. 1 and 2, A represents the gear of this embodiment, and B represents a conventional general bar conveyor. In the bar conveyor B, a large number of convex portions 12a, 12a ... Are projected on the upper surface of two parallel rubber belts 10, 11 at regular intervals to form a convex portion row 12, and the convex portion rows 12 are arranged adjacent to each other. With the bottom surface of the concave portion 13 between the convex portions 12a between the convex portions 12a as the end fixing surface 14 of the metal rod 20, a large number of metal rods 20 are installed between the belts 10 and 11 at regular intervals. Become. The metal rod 20 has its both ends 21, 21 crushed into a flat shape by pressing or the like to form a fixed portion, which is screwed to the fixed surface 14 and is hung between the two rubber belts 10, 11. Set up. The bar conveyor B is stretched over the sprocket 30, 31 on the drive side and the sprocket on the driven side, which are erected in the machine frame (not shown) of the harvester, and the gear A of this embodiment is provided in the intermediate portion on the lower surface side. It is used in the state where it is engaged.

The gear A is formed by integrally molding an outer peripheral tooth profile portion 1 having a plurality of teeth 1 a, 1 a ... Protruding in a circumferential direction with a pitch that meshes with the convex portion row 12 with hard rubber. A bearing 3 is loaded in a shaft hole 2 opened at the center of the portion 1. The outer peripheral toothed portion 1 is provided with the bearing 3 on the free end side of a fixed shaft 35 provided in a cantilever shape at two positions of the frame F in the machine frame so as to correspond to the two rubber belts 10 and 11. It is rotatably attached to the outside via the.

Thus, the bar conveyor B using the gear A of this embodiment for an idler, while supporting the lower surface side by the gear A, removes root vegetables and the like supplied to the upper surface side. The root vegetables and the like are transported and sorted according to size. Further, at this time, as the outer peripheral tooth profile 1 of the gear A and the row of protrusions 12 mesh, the metal rod end (fixed portion) 21 fixed in the recess 13 collides with the tooth 1a. The outer peripheral tooth profile 1 itself absorbs and buffers the impact, and noise and vibration are prevented from occurring, and therefore smoother transportation is possible without fear of damaging root vegetables.

3 and 4 show the case where the gear A in the above-mentioned embodiment is used for an idler of a special bar conveyor C. This bar conveyor C has been proposed in order to eliminate the drawbacks of the general bar conveyor B described above. A large number of convex portions 12a, 12a ... are projected at regular intervals on the upper surfaces of two parallel rubber belts 10,11. To form a convex portion row 12, and both end portions 22 and 22 of the metal rod 20 are embedded and integrated in the respective convex portions 12a of the convex portion row 12 so that a large number of metal members are provided between the belts 10 and 11. The rods 20 are installed at regular intervals.

According to the bar conveyor C, various processings and operations for screwing both end portions of the metal rod 20 to the fixing surface, which are required in the conventional bar conveyor B, are unnecessary, and are extremely simple and low. Not only can it be manufactured at low cost, but it also has many advantages such as improved strength and durability of the entire bar conveyor.

Incidentally, the gear A in this embodiment is similar to the above embodiment in that the outer peripheral tooth profile portion 1 having a plurality of teeth 1a, 1a formed with a pitch that meshes with the convex portion row 12 of the bar conveyor C is made of hard rubber. It is integrally molded, and is rotatably fitted to the free end side of the fixed shaft 35 via the bearing 3 mounted in the shaft hole 2.

When the gear A of the present invention is used for the idler of the bar conveyor C, the above-mentioned noise and noise are caused because the metal rod ends are not exposed in the convex row 12 of the bar conveyor C. The effect of preventing vibration is dramatically improved.

In the bar conveyor C, the metal rod 20 is covered with rubber, and a large number of protrusions 24 made of an elastic material are planted outside the rubber coating layer 23 to prevent damage to the root vegetables to be conveyed. The effect is improved. Further, a large number of convex portions 15a, 15a ... Are projected on the lower surface of the rubber belts 10, 11 at regular intervals to form a convex portion row 15 that meshes with the sprockets 30, 31. The rubber coating layer 23, the protrusions 24, and the row of convex portions 15 can be formed on the bar conveyor B described above.

[0015]

[Effect of device]

 As described above, the bar conveyor gear of the present invention has the outer peripheral tooth profile formed by the hard rubber that meshes with the convex array formed on the bar conveyor side. The outer peripheral tooth profile itself absorbs and buffers the impact due to the collision with the end of the fixed metal rod to prevent the generation of noise and vibration due to the collision.

[0016] Therefore, a drawback of using a conventional gear integrally formed of a metal material, that is, noise occurs when the outer peripheral tooth profile of the gear collides with the end of the metal rod when the bar conveyor is driven. In addition, the problem that the bar conveyor vibrates and damages the root vegetables to be conveyed due to the collision is solved, and the root vegetables can be conveyed more smoothly.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a gear for a bar conveyor according to the present invention, showing a case where the gear is used for a conventional general bar conveyor.

FIG. 2 is an enlarged vertical cross-sectional view of a main part of FIG.

FIG. 3 is a front view showing an embodiment of a bar conveyor gear according to the present invention, showing a case where it is used for a special bar conveyor.

FIG. 4 is an enlarged vertical cross-sectional view of a main part of FIG.

[Explanation of symbols]

A: Gear 1a: Tooth 1: Peripheral tooth profile
2: Shaft hole 3: Bearing B, C: Bar conveyor
10,11: Rubber belt 12: Convex part row 12a: Convex part 20: Metal rod
21,22: Metal rod end

Claims (1)

[Scope of utility model registration request] 1. A plurality of convex portions are provided on the upper surfaces of two parallel belts at regular intervals, and an end portion of a metal rod is fixed in the convex portion row so that a large number of convex portions are provided between the two belts. A bar conveyor gear in which metal rods are erected at regular intervals, wherein an outer peripheral tooth profile part that meshes with a row of protrusions of each of the belts is formed of hard rubber.