Method for manufacturing a steel wire rope for mine hoisting with a diameter of 60.5 mm

Abstract

The diameter 60.5mm mine hoisting steel wire rope manufacturing method, metal rope core and rope outer strand are twisted on the rope stringing unit set once, part of the strand in the metal rope core is twisted once according to the layer number of the composition, the metal rope core and the rope outer strand are produced by using the pre-deformation device, the pre-deformation of each strand is generated, the sisal strand is filled in the gap between the metal rope core strands and the contact gap between the rope outer strand and the metal rope core, the sisal strand is fully immersed in oil, the friction between the buffer strands is buffered and the oil is well stored. The steel wire rope has high breaking tension, wear resistance, flexibility and rotation resistance.

Description

Technical Field

[0001] This invention relates to a method for manufacturing a 60.5mm diameter steel wire rope for mine hoisting, belonging to the field of metal product processing technology. Background Technology

[0002] Wire ropes used in mine hoisting are a crucial component of mine hoisting systems, serving as the link between the drum and the hoisting container. Their safety and reliability are of paramount importance for ensuring the stable, efficient, and safe operation of mine hoisting. As mine depths increase, the diameter and width of the hoist drum also expand, posing challenges to manufacturing, transportation, and installation. This places higher demands on the wire rope's structural selection, breaking strength, abrasion resistance, flexibility, and anti-rotation properties. Summary of the Invention

[0003] The present invention aims to solve the technical problem of producing mine hoisting wire ropes with high breaking strength, wear resistance, flexibility and anti-rotation properties by effectively controlling the strand twisting parameters and the twisting method of the wire rope.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A method for manufacturing a 60.5mm diameter mine hoisting wire rope includes the following steps:

[0006] 1) Strand manufacturing:

[0007] The core of the metal rope is made of sisal, with a nominal diameter of 3.0 mm. The outer strands of the metal rope consist of three small round strands (1×7-Φ6.65 mm) and three large round strands (1×43-Φ14.47 mm), all with a left-hand twist. The steel wires in the large round strands are arranged from the inside out as follows: 1-6-12-12-12. The first three layers (1-6) are twisted separately with a twist ratio of 7.5. The outer three layers (12-12-12) are twisted together with a twist ratio of 8.

[0008] The outer strand of the rope consists of eight compacted strands of 1×K43-Φ16.12mm, with a left-hand twist. The steel wires within the strand are arranged from the inside out as follows: 1-6-12-12-12. The first three layers (1-6 wires) are twisted separately with a twist ratio of 7.5, while the outer three layers (12-12-12 wires) are twisted in one pass with a twist ratio of 8.3. The strand diameter compression rate is controlled between 9.5% and 10%.

[0009] 2) Rope manufacturing:

[0010] The metal rope core and the outer strand are twisted together in one step on the rope forming series unit. The twisting type and direction of the metal rope core and the wire rope are both right-hand interlaced twist.

[0011] The metal rope core is produced using a pre-deformer, which pre-deforms three 1×7-Φ6.65mm round strands and three 1×43-Φ14.47mm round strands. The strand deformation rate is controlled at 78% to 85%. Sisal strands with a diameter of 4.0mm to 4.5mm are filled between the strands. The sisal strands are fully impregnated with sisal oil. The twist ratio of the metal rope core is 6.1 times, and the actual measured diameter after twisting is 30.7mm to 30.9mm.

[0012] The outer strands are also produced using a pre-deformer to ensure sufficient pre-deformation of the strands. The strand deformation rate is controlled at 84%–90%. Furthermore, sisal strands with a diameter of 4.0 mm–4.5 mm are filled in the gap between the outer strands and the metal core. The sisal strands are fully impregnated with sisal oil. The wire rope lay ratio is 6.6 times, and the actual measured diameter after twisting is 62.30 mm–62.50 mm.

[0013] The beneficial effects of adopting the above technical solution are:

[0014] The wire rope of the present invention has the high breaking tensile strength and wear resistance of compacted wire rope, as well as the flexibility and anti-rotation properties of 8-strand wire rope, making it a new type of wire rope for mine hoisting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the 60.5mm diameter steel wire rope structure for mine hoisting according to the present invention.

[0016] In the diagram: 1-Sisal core, 2-Small round strand, 3-Large round strand, 4-Sisal strand, 5-Outer strand of rope. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0018] The wire rope structure of the present invention is 8×K43+IWRC, which consists of 1 metal rope core and 8 outer compacted strands. The metal rope core and the outer strands are twisted together in one step on a rope forming series unit.

[0019] A method for manufacturing a 60.5mm diameter mine hoisting wire rope includes the following steps:

[0020] 1) Strand manufacturing:

[0021] The core of the metal rope is a sisal core 1 with a nominal diameter of 3.0 mm. The outer strands of the metal rope are composed of three small round strands 2 (1×7-Φ6.65 mm) and three large round strands (3) (1×43-Φ14.47 mm), and the twist direction of the strands is left-handed. The steel wires in the large round strand 3 are arranged from the inside to the outside as follows: 1-6-12-12-12. The 1-6 steel wire layers are twisted separately with a twist ratio of 7.5 times. The outer 3 layers, namely the 12-12-12 steel wire layers, are twisted once with a twist ratio of 8 times.

[0022] The outer strand 5 consists of 8 compacted strands of 1×K43-Φ16.12mm, with a left-hand twist. The steel wires within the strand are arranged from the inside out as: 1-6-12-12-12. The 1-6 wire layers are twisted separately with a twist ratio of 7.5, while the outer 3 layers (12-12-12 wire layers) are twisted once with a twist ratio of 8.3. The strand diameter compression rate is controlled between 9.5% and 10%.

[0023] 2) Rope manufacturing:

[0024] The metal rope core and the outer strand are twisted together in one step on the rope forming series unit. The twisting type and direction of the metal rope core and the wire rope are both right-hand interlaced twist.

[0025] The metal rope core is produced using a pre-deformer, which pre-deforms three 1×7-Φ6.65mm round strands 2 and three 1×43-Φ14.47mm round strands 3. The strand deformation rate is controlled at 78% to 85%. Sisal strands 4 with a diameter of 4.0mm to 4.5mm are filled between the strands. The sisal strands are fully impregnated with oil. The twist ratio of the metal rope core is 6.1 times, and the actual measured diameter after twisting is 30.7mm to 30.9mm.

[0026] The outer strands of the rope are also produced using a pre-deformer to ensure sufficient pre-deformation of the rope strands. The strand deformation rate is controlled at 84% to 90%. Furthermore, a sisal strand with a diameter of 4.0 mm to 4.5 mm is filled in the gap between the outer strands and the metal rope core. The sisal strands are fully impregnated with sisal oil. The wire rope lay ratio is 6.6 times, and the actual measured diameter after twisting is 62.30 mm to 62.50 mm.

[0027] In this invention, the metal rope core and the outer strands are twisted together in one operation on a rope-forming series unit during rope assembly; the twisting process is designed to be done in one operation based on the number of layers of strands in the metal rope core.

Claims

1. A method of manufacturing a steel wire rope for mine hoisting with a diameter of 60.5 mm, characterized in that: It comprises the following steps: 1) strand manufacturing: The metal rope core center strand is a sisal strand core (1) with a nominal diameter of 3.0 mm; the metal rope core outer strand is composed of 3 small round strands (2) of 1x7-Φ6.65 mm and 3 large round strands (3) of 1x43-Φ14.47 mm, and the twist direction of the strands is all left twist; the steel wires in the large round strands (3) are arranged from inside to outside as 1-6-12-12-12, the 1-6 steel wire layers are twisted separately, and the lay length multiple is 7.5 times; the outer 3 layers, i.e. 12-12-12 steel wire layers, are twisted once, and the lay length multiple is 8 times; The rope outer strand (5) is composed of 8 compacted strands of 1xK43-Φ16.12 mm, and the twist direction of the strands is left twist; The steel wires in the strands are arranged from inside to outside as 1-6-12-12-12, the 1-6 steel wire layers are twisted separately, the lay length multiple is 7.5 times, the outer 3 layers, i.e. 12-12-12 steel wire layers, are twisted once, the lay length multiple is 8.3 times, and the strand diameter compression rate is controlled within 9.5% to 10%; 2) rope manufacturing: The metal rope core and the rope outer strand are twisted once on a rope twisting in-line unit, and the twisting type and direction of the metal rope core and the steel wire rope are all right alternating twist; The metal rope core is produced by a pre-deformer, so that the 3 small round strands (2) of 1x7-Φ6.65 mm and the 3 large round strands (3) of 1x43-Φ14.47 mm are all pre-deformed, the strand deformation rate is controlled within 78% to 85%, and the sisal strands (4) with a diameter of 4.0 mm to 4.5 mm are filled between the strands, the sisal strands are fully immersed in Gaopei oil, the lay length multiple of the metal rope core is 6.1 times, and the actual measured diameter after twisting is 30.7 mm to 30.9 mm; The rope outer strand is also produced by a pre-deformer, so that the rope strands are fully pre-deformed, the strand deformation rate is controlled within 84% to 90%, and the sisal strands (4) with a diameter of 4.0 mm to 4.5 mm are filled in the gap between the rope outer strand and the metal rope core, the sisal strands are fully immersed in Gaopei oil, the lay length multiple of the steel wire rope is 6.6 times, and the actual measured diameter after twisting is 62.30 mm to 62.50 mm.

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