PL186131B1 - Method of jointing together the ends of conveyor belts - Google Patents

Abstract

Method of connecting conveyor belts belt wear of joints or mechanical fastening elements, characteristic in that from the ends of the joined strips (1) mechanically outer layers are removed rubber (2) and exposed fabric surfaces cores (3) on the sides of their mutual contact, is covered with layers of quick-setting the adhesives (4), preferably in layers adhesive with high mechanical strength and pinching them together with an overlap using mechanical couplings (6).

Description

The subject of the invention is a method of joining belts of belt conveyors, in particular heavy-duty conveyors, used for horizontal, oblique and vertical transport of loose and lumpy materials, including the transport of coal in underground mine galleries and in overground transport.

Hitherto known and applied methods of mechanical joining of conveyor belts by their butt joint or overlapping with the use of mechanical joints, including joints according to the utility model Ru 53 677.

Mechanically joined tapes show relatively high tear resistance, however, in conditions of high humidity and in contact with underground waters of high corrosive aggressiveness, they are subject to accelerated wear.

The essence of the invention is a method of joining belt conveyor belts with the use of a quick-setting adhesive, preferably an adhesive with high mechanical strength and mechanical joints. The outer layers of rubber are mechanically removed from the ends of the tapes to be joined, and the exposed surfaces of the fabric cores on the sides of their contact are covered with layers of a quick-setting adhesive, preferably an adhesive with high mechanical strength, and, by clamping, overlapped using mechanical joints.

The edges of the contacts of the fabric cores with the edges of the outer rubber layers and the edges of the outer rubber layers are profiled with sharp angles, preferably α - 30 °, β - 45 ° and γ - 10 °, respectively.

The connection of conveyor belts is made with single or multi-row layout of mechanical joints, by applying them to the outer surfaces of fabric cores, already pre-bonded with the use of an adhesive, while in multi-row joints, individual rows of joints are shifted by half of the module "M" in relation to the joints the preceding row.

The belt joints made by the method according to the invention have a relative strength similar to that of the native conveyor belt and are durable even in the harsh corrosive conditions of hard coal mines.

The method of joining the belts of belt conveyors is shown in the drawing examples, where:

figure 1 shows the connection of tapes with a single-row arrangement of mechanical joints,

Figure 2 shows a section P-P of this joint, figure 3 shows a connection of tapes with a double-row layout of mechanical joints, figure 4 shows a section P-P of this joint.

Example 1 of the invention implementation:

The outer rubber layers 2 were removed from the ends of the conveyor belts, revealing the fabric cores 3, the edges of which were profiled as well as the outer edges of the rubber layers 2, keeping the angles α - 30 °, β - 45 ° and γ - 10 °, respectively. The ends of the tapes 1 prepared in this way were covered with layers of adhesive 4 by applying them to the surfaces of the cores 3 on the sides of their mutual contact, after which the cores 3 were joined, holes 5 were made with the modulus A appropriate for the mechanical joints 6 used and the joints were tightened.

Example 2 of the implementation of the invention:

The ends of the tapes 1 were prepared as in example 1, pre-joined with the adhesive 4, then holes 5 were made with the modulus A, and the second row of holes was made, respectively, with an offset by half the module M in relation to the holes of the previous row, and then the joints 6 were mounted and properly tightened.

When making the connections as above, the adhesive "Cement SU 2 000" was used as the binder and the joints according to the utility model No. 53 677.

Connections of conveyor belts with a width of up to 1,000 mm are made using the method according to the invention in less than 1 hour.

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Publishing Department of the UP RP. Circulation of 50 copies. Price PLN 2.00.

Claims (4)

Patent claims 1. Method of joining belt conveyor belts with the use of joints or mechanical strapping elements, characterized in that the outer layers of rubber (2) are mechanically removed from the ends of the joined belts (1), and the exposed surfaces of fabric cores (3) on the sides of their mutual contact, are covered with layers of quick-setting adhesive (4), preferably with layers of adhesive with high mechanical strength, and by clamping, they are overlapped using mechanical joints (6). 2. The method according to p. 3. The method of claim 1, characterized in that the edges of the contact of the ends of the cores (3) with the edges of the outer rubber layers (2) and the edges of the outer rubber layers (2) are profiled maintaining sharp angles, preferably respectively the angle α - 30 °, the angle β - 45 ° and angle γ -10 °. 3. The method according to p. A method as claimed in claim 1 or 2, characterized in that the joining of the tapes (1) is carried out in a single or multi-row arrangement of joints (6), which are placed and clamped on the outer surfaces of the cores (3) already pre-joined using the adhesive (4). 4. The method according to p. The method of claim 1, characterized in that the individual rows of connectors (6) move with respect to the connectors of the row preceding the module (M) by half.