Pulse-resistant steel-wire winding hydraulic rubber pipe

Abstract

The invention discloses a pulse-resistant steel-wire winding hydraulic rubber pipe. The pulse-resistant steel-wire winding hydraulic rubber pipe comprises an inner-layer blank pipe and an outer-layer protecting layer, wherein a steel wire skeleton is wound on the outer wall of the inner-layer blank pipe, and is formed by four-layer steel wires and middle films which are spirally wound in sequence from inside to outside; and the outer diameters of the spiral lines of the spiral winding layers of the four-layer steel wires are different, and the angles of spiral lines of the spiral winding layers of the four-layer steel wires are also different. The pulse-resistant steel-wire winding hydraulic rubber pipe is optimally designed for the arranging mode of the steel-wire skeleton of ultrahigh-pressure winding rubber pipes, gets out of the original situation that the matching of the winding angles of the steel wire skeleton and the angles of all the layers of steel wires is designed and determined by experience, guarantees more reasonable production of the steel-wire winding rubber pipe, and enables the quality and the service life of the product to be greatly improved. The pulse-resistant steel-wire winding hydraulic rubber pipe disclosed by the invention has the advantages that by application of the technical analysis and the optimized design, the structure of the steel wire skeleton of the original hot-oil-resistant ultrahigh pressure winding rubber pipe is more reasonable, and further the service life of the rubber pipe is greatly prolonged; 3-5 ten-thousand times in the original design is increased to be more than 9 ten-thousand times after the optimal design by a finished-product pulse test; and the service life of the hot-oil-resistant high-performance steel-wire winding rubber pipe product is greatly prolonged.

Description

technical field [0001] The invention relates to an ultra-high pressure steel wire wound hydraulic rubber hose, in particular to a long-life high pressure steel wire wound hydraulic rubber hose. Background technique [0002] With the continuous development of mining engineering machinery in my country and the world, the requirements for high-pressure hydraulic hoses that transmit hydraulic power have been further increased. The hoses are required to be under the pulse and high pressure of high-temperature hydraulic oil and in an open-air environment, so they need to have a longer service life. . Therefore, the requirements for the rubber material and skeleton structure of the corresponding parts of the product are relatively high. Only reasonable rubber properties and the arrangement of the skeleton steel wires are optimized to develop the most reasonable winding of each layer of skeleton steel wires for the production of high-performance steel wire wound hydraulic hoses. The...

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Problems solved by technology

[0003] The current steel wire winding - ultra-high pressure hydraulic hose, the pipe body is prone to change in length and diameter under the action of pulse pressure, and at the same time the volume is large, the winding angle and winding method of the skeleton steel wire of each layer of steel wire winding hydraulic hose are different, partly depends on experience The design determines the winding angle of the steel wire skeleton and the matching of the angles of the steel wires of each layer. The production of the steel wire wound rubber hose is not reasonable. After passing the pulse test of the finished product for 300,000 to 500,000 times, the skeleton layer of the hose body is prone to displacement under the action of internal pressure.

Thus seriously affecting the quality and life of the hydraulic hose

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