JPH07265796A - Rubber screen - Google Patents

Abstract

PURPOSE:To prevent the deformation of screen openings to be generated by the lowered strength at a middle press plate section of a rubber screen, the misarrangement of rope tension or the like and the local breakage at the time of vibration and the like and also simplify the installation work. CONSTITUTION:In a rubber screen for a vibration screen in which materials 7 and 8 are crossed rectangularly in the vertical and horizontal directions and laminated crossover and the crossing sections are bonded together, a through- hole 9 for bolt of optional shape such as circle, rectangle or other shape is formed on the bolt position, of a middle net press plate section and tensile bodies 7' at the ends of horizontal rope-shaped materials 7 position in the through-hole 9 are exposed. The exposed tensile bodies 7' are positioned at least on one face of a reinforcing plate 10 with the through-hole and a plurality of reinforcing bodies A implanted in a layer of a bonding body 11 composed of rubber, polyurethane, epoxy resin or the like and integrated thereon are arranged at given intervals in a rubber screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to ore, crushed stone, coke,
The present invention relates to a rubber screen for a vibrating screen that efficiently screens lumps and powders of chemicals and the like.

[0002]

2. Description of the Related Art At present, as a rubber screen of this kind which is locked to a vibrating screener through a hook locking portion P as shown in FIG. 3, a twisted yarn of steel cord, chemical fiber or the like is used as a tensile body. There is known a structure in which rope-shaped element bodies 8 and 7 having a periphery covered with an elastic body such as rubber or polyurethane are vertically and horizontally cross-laminated, and the cross-link portions are heat-welded. And, when this type of rubber screen is attached to a sieving machine having an intermediate net pressing unit structure, as shown in FIGS. 3 and 4,
A cushioning rubber sheet 5 is interposed in the middle portion of the rubber screen 1, sandwiched vertically and vertically by the angle 2 and the pressing plate 3, the bolt 4 is penetrated, and the nut 4'is tightened and fixed.

[0003]

However, when the rubber screen is attached to the sieving machine by the above means, the size of the mesh 6 of the rubber screen is various and the diameter of the bolt 4 is larger than that of the mesh 6. In some cases, such as when the lateral rope element 7 is aligned with the bolt position, cutting the lateral rope element in order to facilitate penetration of the bolt causes a decrease in strength, which causes flapping during vibration. Since it causes an early breakage, the lateral rope element is not cut as shown in FIG. 5, and the longitudinal rope element 8 of the pressing plate portion is not cut.
Is widened, and the means for penetrating the bolt 4 by expanding the lateral rope element 7 is taken. However, when the sieve mesh 6 is very small, it is necessary to expand a plurality of lateral ropes. The tension of the rubber screen at the position becomes non-uniform, causing premature rupture, and the work of penetrating the bolt is very difficult, which requires a lot of time and labor for the mounting work.

The present invention focuses on the above-mentioned conventional drawbacks,
By coping with this and finding an improved attachment means especially when attaching to a sieving machine having an intermediate net presser plate structure, the strength reduction in the intermediate presser plate part of the rubber screen,
The purpose of the present invention is to prevent the deformation of the sieve mesh caused by uneven rope tension, local breakage during vibration, and simplification of the mounting work.

[0005]

That is, the feature of the present invention that achieves the above object is that a twisted yarn such as a steel cord or a chemical fiber is used as a tensile body, and the periphery thereof is covered with an elastic body such as rubber or polyurethane. A core-shaped rope-shaped element having an arbitrary shape such as a circular shape, an elliptical shape, a quadrangle, or a polygonal cross-section is aligned in parallel in the lateral direction, and a core-shaped or coreless rope-shaped element having the above-described cross-section is formed on the parallel-shaped element A rubber screen for a vibrating screener in which the bodies are aligned in a vertical direction in parallel, laminated vertically and intersected vertically and horizontally, and the ends of the rubber screen that joins the intersecting parts are attached to the hook locking parts. At the bolt position of the pressing plate portion, there is a through hole for a bolt having an arbitrary shape such as a circle or a rectangle, and the tensile body at the end of the lateral rope-shaped element located at the through hole portion is exposed,
Place the exposed tensile member on the surface of a reinforcing plate having at least a through hole, and embed it in an adhesive layer of rubber, polyurethane, epoxy resin, or the like, and fix and integrate the reinforcing members at predetermined intervals. There is a point.

[0006]

The rubber screen having the above-mentioned structure allows the bolts to be easily passed through the already installed through holes for bolts when installing the mesh retainer, and the steel cord of the lateral rope element, the chemical fiber, etc. By firmly fixing the tension body together with the reinforcing plate, it is possible to prevent deformation of the sieve mesh and decrease in strength, so not only local fracture is prevented and life is improved, but also labor and time spent for replacement work are at least completed. Work efficiency can be significantly improved.

[0007]

Embodiments of the rubber screen for a vibrating screen according to the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 are partial views showing a reinforcing body which is an essential part of the rubber screen of the present invention. In the drawings, 7 is a lateral rope-shaped element (hereinafter simply referred to as lateral rope), 7 ′ Is steel cord, aromatic polyamide,
A tensile body made of twisted yarns of aliphatic polyamide, polyester, glass fiber, etc., 7 ″ is usually a thermoplastic polyurethane elastic body, and the lateral rope 7 has a tensile body 7 ′ as a core body and a polyurethane elastic body 7 ″. It is a covered rope-shaped element having a circular cross section.

On the other hand, reference numeral 8 denotes a circular section having a tensile body made of the same material as that of the tensile body 7'covered with a polyurethane elastic body 7 ", or a cored or polyurethane elastic body having any of the above arbitrary cross sections. A vertical rope-shaped element of a coreless rope with the same cross section (hereinafter simply referred to as a vertical rope)
Then, they are laminated in parallel with the horizontal rope in the vertical direction and welded at the intersecting portion. The vertical and horizontal rope-shaped elements are usually circular in cross section, but are not limited to circular shapes, and may be oval shapes other than circular shapes, quadrangular shapes, polygonal shapes, horseshoe shapes, and also elastic bodies to be coated. In addition to polyurethane, a natural rubber, a synthetic rubber single body, or a blended abrasion-resistant rubber-like elastic body may be used.

Further, in the figure, A is a reinforcing member of the intermediate pressing plate portion having a rectangular bolt through hole 9 having a side length larger than the diameter of the tightening bolt 4, and is a staggered through hole B and the bolt. The reinforcing plate 10 made of iron having a rectangular hole slightly larger than the through hole 9 is covered with an elastic adhesive 11 described later, and the reinforcing plate 1 made of iron is provided on the upper or lower surface of the horizontal rope 7.
0, and the horizontal rope 7 that crosses the through hole 9 as shown in FIG.
Is first cut at the center of the through hole, and the elastic body 7 ″ of the reinforcement body is cut.
Is removed from the required position S to the outside of the reinforcing plate 10 to expose the tensile body 7 ', and the distal end of the tensile body 7'is untwisted to be loosened.

An adhesive is applied to both the exposed portion of the tensile body 7'and the reinforcing plate 10 made of iron, and the horizontal rope 7, the vertical rope 8, the exposed portion of the tensile body 7 ', and the reinforcing member made of iron. In this case, the plate 10 is completely buried, and the liquid polyurethane (thermosetting) adhesive 11 is cast and cured so that the vertical rope does not exist. A strong reinforcing body A is obtained by adhering and integrating the horizontal rope 7, the vertical rope 8, the exposed tensile body 7'and the reinforcing plate 10 into the through hole B to exert the anchoring effect.

The hole shape of the bolt through hole 9 is as follows.
It is not limited to a rectangular shape, but may be a circular shape, an oval hole, or a polygonal shape, but usually a tightening bolt having a diameter of 16 mm or 20 mm is often used, and the size of the bolt through hole is a hole larger than the bolt diameter. For example, 30 mm x 50
Rectangular holes of mm are preferred. The exposed tensile member 7'may be located on the reinforcing plate 10 or below. The adhesive may be an elastic adhesive such as polyurethane, NR, SBR, CR, epoxy resin, polyester resin or the like. A thermosetting resin containing short fibers is used, and the most preferable one is a polyurethane adhesive.

A plurality of the reinforcing members A having such a structure are arranged in the longitudinal direction or in the longitudinal and lateral directions according to the size of the rubber screen and the bolt pitch of the intermediate net pressing plate portion of the vibrating screener, as shown in FIG. When equipped via the hook engaging portion P, a cushioning rubber sheet 5 is interposed above and below the reinforcing body A as shown in FIG. 4, and is sandwiched between the pressing plate 3 and the angle 2 so that the bolt 4 and the nut 4 '. The fixing plate 3 is fixed in the same manner as in the conventional method, but the fastening bolts can be fixed to the through holes for bolts without cutting the horizontal ropes at the time of installation and without the trouble of pushing the horizontal ropes to penetrate the bolts. It is possible to obtain a rubber screen that can be easily threaded through the cable, can obtain a uniform rope tension without lowering the strength, has a long life without local breakage, and is easy to install.

[0014]

INDUSTRIAL APPLICABILITY As described above, the rubber screen of the present invention is a cored rope having an arbitrary shape in which a twisted yarn such as a steel cord or a chemical fiber is used as a tensile body and the periphery thereof is covered with an elastic body such as rubber or polyurethane. The element bodies are arranged in parallel in the horizontal direction, and the core-shaped or uncore rope-shaped element body having the above-mentioned cross-sectional shape is arranged in parallel in the longitudinal direction, and the layers are crossed vertically and horizontally, and the crossing is performed. In a rubber screen for a vibration sieving machine in which the ends of the rubber screen with the joined parts are attached to the hook locking parts, a bolt through hole of any shape is provided at the bolt position of the intermediate mesh holding plate part, The tensile member at the end of the lateral rope-shaped element located in the hole is exposed, and the exposed tensile member is positioned on the surface of the reinforcing plate having at least the through hole to form rubber, polyurethane, or epoxy. By arranging the reinforcing body embedded and fixedly integrated in an adhesive such as grease according to the tightening bolt position of the intermediate mesh holding plate of the sieving machine, it is necessary to spread the horizontal rope and to penetrate the bolt during installation. No, it can easily penetrate the tightening bolt in a short time, and since the through hole is reinforced with a strong adhesive, deformation of the sieve mesh caused by reduced strength, uneven rope tension, etc. It is possible to prevent local breakage,
Not only the installation work is simplified, but the life of the screen is also greatly increased, and the use performance such as durability and workability can be greatly improved as compared with the conventional rubber screen.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing a main part of a rubber screen of the present invention.

2A and 2B also show essential parts of the rubber screen of the present invention, FIG. 2A is a partially cutaway plan view thereof, and FIG. 2B is a front view thereof.

FIG. 3 is a partial perspective view showing a mounting structure when a pressing plate is attached to a sieving machine having an intermediate net pressing unit structure in a conventional rubber screen.

FIG. 4 is a partial cross-sectional view of FIG.

FIG. 5 is a partial plan view showing another aspect of attaching a pressing plate in a conventional rubber screen.

[Explanation of symbols]

 1 Rubber Screen 7 Horizontal Rope Element (Horizontal Rope) 7 ′ Tensile Body 7 ″ Elastic Body 8 Longitudinal Rope Element (Vertical Rope) 9 Through Hole for Bolt 10 Reinforcement Plate 11 Adhesive A Reinforcement B Through Hole P Hook locking part

Claims (1)

[Claims] 1. A cored rope having a circular cross section, an elliptical shape, a quadrangular shape, a polygonal shape, etc. in which a twisted yarn such as a steel cord or a chemical fiber is used as a tensile body and the periphery thereof is covered with an elastic body such as rubber or polyurethane. The element bodies are aligned in parallel in the horizontal direction, and the core-shaped or coreless rope-shaped element having the above-mentioned cross-sectional shape is aligned in the lengthwise direction in parallel, and the layers are cross-interlaced by making them vertical and horizontal orthogonal, In a rubber screen for a vibration sieving machine in which the ends of the rubber screen with the intersecting parts joined to each other are attached to the hook locking parts, through holes for bolts of any shape such as circular or rectangular are formed at the bolt positions of the intermediate mesh holding plate part. And exposing the tensile member at the end of the lateral rope-shaped element located in the through hole, and laying the exposed tensile member on at least one surface of the reinforcing plate having the through hole. ,
A rubber screen comprising a plurality of reinforcing bodies embedded and fixedly integrated in an adhesive layer made of polyurethane, epoxy resin, or the like at predetermined intervals.