JPS622163Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an inclined conveyor belt, and particularly to a conveyor belt designed to convey powder or granular materials. Conventionally, as a tilting conveyor belt for this type of conveyed material, the first
As shown in Figures 1 and 2, examples of which are shown in Figures 2 and 3 are widely used in which a group of horizontal bars extending in the width direction of the belt are arranged in multiple stages in the longitudinal direction of the belt on the entire surface of the belt base. Depending on the shape and configuration of the horizontal rails, large errors may occur in the efficient operation of the belt and the smooth transportation of conveyed objects.

For example, in the case of a belt in which a rectangular fixed crosspiece 2 is fixed on the belt base 1 shown in FIG.
2 In the case of a belt in which a horizontal beam 2 assembled with two deformed trapezoids is fixed on a belt base 1, even if it fits into the trough as shown in FIG. 2,
Because the shape of the horizontal crosspiece is large, the belt will sag on the return side of the belt, and a part of the horizontal crosspiece, especially the top corner, will come into contact with the frame, resulting in premature damage to the horizontal crosspiece and the belt base of the horizontal crosspiece. There are problems that need to be solved, such as early peeling of the belt, and quantitative loss of material due to unnecessarily large horizontal crosspieces, resulting in higher belt costs. .

This idea is based on the idea that when powder or granular materials are gently dropped from a funnel onto a flat surface, they accumulate in a conical shape. Therefore, the angle of repose that occurs is different for each case, and the intersection angle between the generatrix (ridge line) of the cone and the horizontal plane, which are created by falling and accumulating these conveyed materials on a flat surface, is 22 degrees for alumina and 39 degrees for foundry sand, for example. °, mica is 34 °, sawdust is
There are various differences such as 36°. In any case, this idea is based on the basic form of powder and granules after they fall, that is,
Focusing on the fact that the generatrix has a triangular chevron shape with equal length, the shape of the horizontal bar formed on the belt when the conveyor belt is concavely curved into a trough-like shape is a triangular shape based on the same equilateral triangular chevron shape as the conveyed object. The feature is that the horizontal bars are exposed. More specifically, in a conveyor belt in which a group of horizontal bars extending in the belt width direction are successively arranged in multiple stages in the longitudinal direction of the belt on the entire surface of the conveyor belt base, the horizontal bars have appropriate triangular cuts or cuts between them. It is composed of triangular single materials on both sides with a trough angle, and a pair of deformed trapezoidal single materials in the center. The intersecting angle β between the horizontal plane and a pair of outer sides of the equilateral triangular chevron horizontal bars formed by adjoining is equal to or comfortably larger than the angle of repose of the chevron formed by the desired conveyed object. The present invention provides an inclined conveyor belt characterized by being configured to exhibit an angle, and which improves the various disadvantages described above inherent in conventional conveyor belts with horizontal bars in many aspects, Next, a specific embodiment of the inclined conveyor belt according to the invention will be described with reference to the drawings.

The entire surface of the belt-shaped conveyor belt base 1 made of synthetic resin, such as polyurethane, polyvinyl chloride, polyvinyl alcohol, etc., is coated with:
Two groups of horizontal bars made of the same resin as the belt base body 1 and extending in the belt width direction are arranged in a row in multiple stages in the belt longitudinal direction. This horizontal beam 2 is composed of a plurality of independent single materials, specifically an aggregate of four single materials 3, 4, 4, 3, and there are appropriate triangular cuts A and B between each single material. , A, that is, they have an appropriate trough angle, and each of these single materials 3 and 4 forms an equilateral triangular mountain shape due to the folding of the trough-like concave curvature of the belt and the close adjacency of each single material as the trough angle disappears. A horizontal bar 2 is formed. The belt base 1 has flexible bending stress in the belt longitudinal direction and unique lateral rigidity in the belt width direction, and has triangular single members 3 at both ends arranged in a line in the belt width direction. 3. A pair of trapezoidal single members 4, 4 in the center are firmly fixed onto the belt base 1 by means such as adhesive, baking, pressing, or welding, and a shape is formed between each single member. The triangular cuts A, B, and A, that is, the trough angle, that is, the trough angle A formed between the end pieces 3 and the center pieces 4 are x ₂ °, and the trough angle formed between the center pieces 4 and 4. B is 2x ₁ °, and the intersection angle θ° between the ridgeline 5 on the outer side of the single material 3 at both ends and the belt base 1 is set in accordance with the angle of repose that changes for each conveyed object, that is, powder or granular material. . To explain more specifically, when the belt base 1 is located on a flat reference plane, the intersecting angle α° between the inner side edge line 6 of the central piece 4 and the belt base 1, the outer side edge line 5 of the end piece 3, The intersection angle with the belt base 1 is θ°, the inclination angle of the oblique upper side 7 of the central single material 4 is τ°, the trough angle of the belt is x°, and the trough angle A between the end single material 3 and the central single material 4 is x ₂ °. , the trough angle B between the central single members 4 and 4 is 2x ₁ °, and the angle of repose of the chevron formed by the conveyed object is °, and from Fig. 5, x = x ₁ + x ₂ , so θ≧x+ α≧ It is important to set the numerical values so that each equation of 90−x ₁ τ = +x ₁ holds true, and by setting the angles θ and α 0 to 5 degrees larger than the above equal sign values, it is assembled into an isosceles chevron shape. The horizontal bar is larger in size than the basic triangular body formed by the conveyed object, and can reliably prevent the conveyed object from sliding off the horizontal beam.

In more detail, a practical example of a resin inclined conveyor belt with horizontal crosspieces constructed of four single materials as shown in the drawing shows a grain size of 1.0 to 1.5 mm.
Angle of repose of granule 9 = 15°, trough angle x = 30
(however _, x ₁ = 10°, The angles θ, α, and τ of each part of the material with the horizontal plane are set as θ≧45° α≧80° τ=25°, and with the above values, the horizontal bars are connected in a row in the longitudinal direction of the belt at a pitch of 200 mm. However, as a result of transporting the cargo in the transport state shown in Figure 4, there was no spillage, and the weight of the horizontal crosspiece was approximately 25% lighter than the conventional horizontal crosspiece shown in Figure 2. Parts of the crosspieces do not come into contact with each other, and the belt life can be extended by about four times. Furthermore, by forming the belt base and each horizontal crosspiece from the same synthetic resin material, it is possible to improve the belt life compared to conventional rubber conveyor belts. Compared to conventional products, it is significantly superior to conventional products in terms of crosspiece processing, adhesiveness, heat shrinkability, total belt body thickness, unit weight, etc., and as a result, it is possible to use small diameter pulleys for the belt. becomes. The wood grain is created by appropriately deforming the shape of the single material that makes up the horizontal crosspiece so that the intersection angle between the outer side of the horizontal crosspiece and the horizontal plane approaches the angle of repose formed by the object to be transported. By slightly deforming the horizontal bars, we can reduce the weight of the belt and the overall weight and size of the conveyor device.
In addition, it can greatly contribute to cost reduction by reducing material loss and the reduction of required power loss, and it is also relatively easy to carry out operations with a maximum inclination angle of 40° for powder and granular materials. Ta.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional conveyor belt with crosspieces.
Fig. 2 1 is a diagram corresponding to Fig. 1 showing another embodiment, and Fig. 2 2 shows the powder of the belt shown in Fig. 1;
Fig. 3 is a front view of the inclined conveyor belt that implements this invention, and Fig. 4 is a front view of the belt showing the conveyance status of powder and granular substances on the belt shown in Fig. 3. 5 is a partially enlarged detailed explanatory diagram of FIG. 4. In the figure, 1 is the belt base, 2 is the horizontal crosspiece, 3, 3 is the end piece, 4, 4 is the center piece, 5 is the outer edge line of the end piece 3, and 6 is the inner edge line of the center piece 4. , 9 is the object to be transported, β is the intersection angle between the outer side of the triangular chevron-shaped horizontal bar and the horizontal plane, and is the angle of repose formed by the object to be transported.

Claims (1)

[Claims for Utility Model Registration] 1. In a conveyor belt in which two groups of horizontal bars extending in the width direction of the belt are consecutively arranged on the entire surface of the belt base 1 in the longitudinal direction of the belt, the horizontal bars 2 are provided with appropriate spaces between them. Triangular cut (trough angle) A, B,
Triangular single material 3, 3 on both sides holding A
It is composed of an assembly of single materials with a pair of deformed trapezoidal single materials 4, 4 arranged in the center, and is formed by folding the trough-like concave curvature of the belt and adjoining each of the single materials 3, 4. The intersecting angle β between the horizontal plane and the pair of outer sides 5, 5 of the equilateral triangular chevron-shaped horizontal beam 2 is equal to or less than the angle of repose formed in the chevron shape by the desired powder or granular conveyed material 9. A tilting conveyor belt characterized by being configured to exhibit a large angle. 2. The tilting conveyor belt according to claim 1, wherein the crossing angle β is set to be 0° to 5° larger than the angle of repose of the conveyed objects 9 piled up in a chevron shape. 3. The tilting conveyor belt according to claim 1, wherein the belt base body 1 and the horizontal rail 2 are made of the same synthetic resin.