JPH0627736U - Bar conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] Crushing and quenching of both ends of a metal rod, drilling work, tightening and attaching work to the belt, drilling work of the belt, etc. can be omitted at all, soil adhesion and damage to root vegetables I will solve it. [Structure] A large number of protrusions 12 are integrally provided on the upper surfaces of two rubber belts 10 and 11 at regular intervals, and both ends of the metal rod 13 are attached to the protrusions on both sides facing each other. We embed each as a round bar.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bar conveyor used in a harvester or the like for harvesting root vegetables and the like.

[0002]

[Prior art]

 In a root vegetable harvester, for example, as disclosed in JP-A-60-217817, in order to pick up root vegetables dug up with soil while removing the soil, and to further select and harvest according to size, A plurality of bar conveyors in which a large number of metal rods are installed at regular intervals between two parallel belts are used, and these bar conveyors are sequentially transposed and transported.

FIG. 2 and FIG. 3 show a conventional general bar conveyor used in such a case. In this conventional bar conveyor, a large number of trapezoidal convex portions 3 are integrally provided on two parallel belts 1 and 2 at a constant interval to form a trapezoidal concave portion 4 between the convex portions 3 and the convex portions 3. Further, both end portions of each metal rod (for example, steel bar) 5 are crushed to form a flat fixing portion 6, and the fixing portion 6 is screwed to the recessed portions 4 of the belts 1 and 2 on both sides facing each other to form a flat metal. The rod 5 is installed between the belts 1 and 2 on both sides. FIG. 4 shows the belts 1 and 2 and FIG. 5 shows the metal rod 5.

The belts 1 and 2 are made by stacking 2 to 4 core materials made of chemical fibers and superposing a rubber layer on the front and back sides. For example, the width is 25 mm, 40 mm, 50 mm, 55 mm, 60 mm, etc. It is prepared and selected according to the usage conditions. The rubber layers on the front and back sides are mainly for protecting the core material, but the rubber layers on the front side also have a role of preventing damage to root vegetables. Incidentally, in the case of a belt having a width of 60 mm, four core materials are stacked, the thickness of the rubber layer on the front side is 2.0 mm, and the thickness of the rubber layer on the back side is 2.0 mm.

As shown in FIG. 6, there are belts 1 and 2 provided with convex portions 3 and concave portions 4 only on the front side, and those provided on both front and back sides as shown in FIG. 7, and as shown in FIG. There is also a flat belt with no irregularities. In the case of a belt provided with irregularities, the pitch of the convex portions 3 is selected in the range of 37 mm to 41 mm. The recess 4 is provided with two holes having a diameter of about 5 to 10 mm for screwing the crushed fixing portions 6 on both ends of the metal rod 5. In the normal case, the number of belts 1 and 2 is two, but when the total width is 1000 mm or more, the metal rod 5 bends. Therefore, further belts are arranged in the center to make three belts.

Further, each of the metal rods 5 is manufactured through the following steps. (1) Both ends are heated (annealed). (2) Crush both ends by pressing or the like. (3) Check the straightness of the metal rod and the parallelism of the crushed fixing parts at both ends, and correct defective products. (4) Drill one or two holes in the crushed fixing parts at both ends. (5) Harden. (6) Correct the distortion.

The metal rod 5 has a diameter of 6 mm to 13 mm, a length of 400 mm to 1500 mm, and the crushed fixing portion 6 has a length of about 30 mm to 60 mm. The diameter of the hole of each fixing portion 6 is about 6 mm to 8 mm. Then, in order to fix such a metal rod 5 to the belts 1 and 2, the fixing portions 6 at both ends of the metal rod 5 are fixed to the recesses 4 of the belts 1 and 2 by tightening metal fittings (for example, bolts, nuts and washers) by screws. Tighten and fix to.

As the metal rod, one having a rubber coating 7 as shown in FIG. 9 and one having a larger number of protrusions 8 provided on the rubber coating 7 as shown in FIG. 10 are also used.

[0009]

[Problems to be solved by the device]

 However, in the conventional bar conveyor having the above-described structure, the crushed and flattened fixing portion 6 of the metal rod 5 and the tightening metal fitting are exposed including the angular portion thereof, so that the following problems occur. was there. Hurt root vegetables. Rust occurs on the metal rod and tightening metal fittings. The soil adheres. Noise is generated. The screw of the tightening metal is loose. The holes in the recesses of the belt gradually become larger, and the water penetrates into the core material of the belt. Accidents such as the belt being cut and the metal rod being bent occur as a result of the above-mentioned adverse conditions.

Further, regarding manufacturing of a conventional bar conveyor, a belt is a belt maker, a crushing of both ends of a metal rod is a metal processing industry, and a rubber coating on the metal rod is an industrial rubber maker or a rubber processing. The manufacturing cost was high because the manufacturer of the product and the work of attaching the metal rod to the belt are different depending on the manufacturing process, such as the agricultural machinery manufacturer.

Therefore, an object of the present invention is to eliminate such problems, and to significantly improve the conventional labor-intensive work of manufacturing a metal rod and attaching the metal rod to a belt. To provide the bearer.

[0012]

[Means for Solving the Problems]

 In the bar conveyor according to the present invention, a large number of convex portions are integrally projected on the upper surfaces of two parallel rubber belts at regular intervals, and the both end portions of the metal rod are formed on the convex portions on both sides facing each other. Each is buried and directly supported by a rubber belt. The metal rod may simply be a round rod with a full length. The upper surface of the convex portion has an arc shape.

[0013]

[Action]

 In the bar conveyor of the present invention, the both ends of the metal rod are not crushed and are left as round bars, and the both ends are directly embedded in the convex portion of the rubber belt. Absent. In addition, it does not require complicated work as in the past in manufacturing and processing, and it can be manufactured easily and inexpensively by applying the rubber processing technology that is usually performed in only one factory, that is, an industrial rubber manufacturer or a rubber processed product manufacturer. .

[0014]

【Example】

 Next, an embodiment of the present invention will be described with reference to FIG. In this bar conveyor, convex portions 12 each having an arcuate upper surface are integrally provided on the respective upper surfaces of two parallel rubber belts 10 and 11 at regular intervals, and the convex portions 12 on opposite sides forming a pair face each other. Both ends of the metal rod 13 are buried. Although not shown, a core material (core material tension layer) made of chemical fiber or the like is embedded in both rubber belts 10 and 11.

The metal rod 13 is, for example, a mere round steel bar having a fixed length, which is used as it is. The metal rod 13 is embedded in the rubber of the convex portion 12 as it is without crushing both ends of the steel rod. The embedding can be easily carried out by forming the convex portions 12 of the rubber belts 10 and 11 by adhesively coating both ends of the round steel bar with rubber. As a result, the processing of both ends of the metal rod 13 (crushing, quenching, drilling, etc.), the tightening and attaching work to the belt, and the drilling work of the belt can be omitted at all.

[0016]

[Effect of device]

 The bar conveyor of the present invention has the following effects. Since it is possible to completely eliminate the crushing, quenching, and punching work on both ends of the metal rod, tightening and attaching work to the belt, and drilling work for the belt, which were required in conventional bar conveyors, the number of manufacturing and processing steps is reduced. The manufacturing cost can be dramatically reduced by drastically reducing

Only an industrial rubber maker or a rubber processed product maker can easily and inexpensively manufacture by applying a rubber processing technique which is usually performed. Since it is not necessary to make holes in the belt, there is no cutting of the core tension layer, and the tension of the belt itself is dramatically higher than that of a conventional perforated belt, which reduces the effective tension design value. You can As a result, the expensive tension layer can be reduced and the weight can be reduced accordingly, so that the cost can be greatly reduced and the weight can be reduced.

The fastening of the metal rod to the belt is not a mechanical fastening through a hole but a chemical bonding fastening, and therefore physical influences (rotational bending movement and influences of water, earth and sand, etc.) due to operational use may occur. Very few. Therefore, the life of the belt can be extended.

Since the method of fastening the metal rod to the belt is to embed the rubber, the end portion of the metal rod is entirely covered with rubber, so that rust corrosion of the metal does not occur at all unlike the conventional product. Since there is no metal rod exposed on the belt, there is no bruising damage to the harvested product, and the adhesion of sediment is greatly reduced, which makes rotation drive extremely smooth.

Since both ends of the metal rod can be embedded as round rods at the time of forming the belt, the precision of the direction, parallelism, straightness, pitch, etc. of the metal rod is improved, and the conveyance efficiency and storage efficiency of the bar conveyor are improved. improves.

[Brief description of drawings]

FIG. 1 is a perspective view of a bar conveyor according to an embodiment of the present invention.

FIG. 2 is a plan view of a conventional bar conveyor.

FIG. 3 is a perspective view of the above.

FIG. 4 is a perspective view of a belt of the bar conveyor.

FIG. 5 is a perspective view of a metal rod of the bar conveyor.

FIG. 6 is a side view of a belt provided with unevenness only on the front side.

FIG. 7 is a side view of a belt in which unevenness is provided on both front and back sides.

FIG. 8 is a perspective view of a flat belt having no unevenness.

FIG. 9 is a perspective view of a metal rod coated with rubber.

FIG. 10 is a perspective view of a metal rod having a rubber coating provided with protrusions.

[Explanation of symbols]

 10 ・ 11 Rubber belt 12 Convex portion 13 Metal rod

Claims (3)

[Scope of utility model registration request] 1. A bar conveyor in which a large number of metal rods are installed between two parallel rubber belts at regular intervals, and a plurality of convex portions are provided at regular intervals on the upper surface of the two rubber belts. A bar conveyor characterized in that both ends of the metal rod are embedded in convex portions on both sides which are integrally projected so as to face each other. 2. The bar conveyor according to claim 1, wherein the metal rod is a round rod having a circular full length. 3. The bar conveyor according to claim 1, wherein an upper surface of the convex portion has an arc shape.