阅读说明：本技术 一种后翻自卸车用吸排油胶管及其加工方法 (Oil suction and discharge rubber pipe for backward dump truck and processing method thereof ) 是由 张永保 于 2019-10-21 设计创作，主要内容包括：一种后翻自卸车用吸排油胶管及其加工方法,涉及液压油管技术领域,它包括由内往外5层结构层构成,依次为：内胶层、内增压层、螺旋钢丝层、外增压层和外胶层,所述的内胶层和外胶层均为氯化聚乙烯材质,所述的内增压层和外增压层均为外部包裹了一层氯化聚乙烯的帘子线缠绕而成,且内增压层和外增压层的缠绕方向相反,分别为顺时针缠绕和逆时针缠绕,所述的螺旋钢丝层为钢丝螺旋缠绕而成,钢丝的间距为0.6cm。本发明还涉及对于本发明的一种后翻自卸车用吸排油胶管的加工方法。本发明具有良好的耐油、耐热、耐老化、耐曲绕性和耐疲劳性,并且承压力高,抗脉冲性能优。(The utility model provides a turn over after and inhale oil discharge rubber tube and processing method thereof for tipper, relates to hydraulic pressure oil pipe technical field, and it comprises by inside to outside 5 structural layers, does in proper order: the inner rubber layer and the outer rubber layer are made of chlorinated polyethylene, the inner pressurizing layer and the outer pressurizing layer are formed by winding a cord wrapped with a layer of chlorinated polyethylene, the winding directions of the inner pressurizing layer and the outer pressurizing layer are opposite, clockwise winding and anticlockwise winding are achieved respectively, the spiral steel wire layer is formed by spirally winding a steel wire, and the distance between the steel wires is 0.6 cm. The invention also relates to a processing method of the oil suction and discharge rubber pipe for the back dump truck. The invention has good oil resistance, heat resistance, aging resistance, flexibility resistance and fatigue resistance, and has high bearing pressure and excellent pulse resistance.)

1. The utility model provides a turn over after with inhaling oil discharge rubber tube, characterized by includes by inside toward 5 outer structural layers constitute, does in proper order: the inner rubber layer and the outer rubber layer are made of chlorinated polyethylene, the inner pressurizing layer and the outer pressurizing layer are formed by winding a cord which is externally wrapped by a layer of chlorinated polyethylene, the winding directions of the inner pressurizing layer and the outer pressurizing layer are opposite, clockwise winding and anticlockwise winding are respectively realized, and the spiral steel wire layer is formed by spirally winding a steel wire.

2. The oil suction and discharge hose for a back dump truck according to claim 1, wherein the distance between the wires of the spiral wire layer is 0.6 cm.

3. The method for processing the oil suction and discharge hose for the tip-back dump truck according to claim 1 or 2, wherein the method comprises the following steps:

step 1: extruding chlorinated polyethylene onto the inner mold core through an extruder to form an inner adhesive layer;

step 2: wrapping a layer of chlorinated polyethylene on the outer layer of the cord, and winding the cord wrapped with a layer of chlorinated polyethylene on the outer part of the inner rubber layer through a winding machine to form an inner pressurizing layer;

and step 3: spirally winding a steel wire outside the inner pressurizing layer by using a winding machine to form a spiral steel wire layer;

and 4, step 4: winding the cord wrapped with a layer of chlorinated polyethylene outside the spiral steel wire layer by a winding machine, wherein the winding direction is opposite to that of the inner pressurizing layer, so as to form an outer pressurizing layer;

and 5: extruding chlorinated polyethylene onto the outer pressurizing layer through an extruder to form an outer rubber layer;

step 6: winding the water cloth outside the outer glue layer through a water cloth winding machine;

and 7: and (4) putting the whole in the step 6 into a vulcanizing tank, preserving heat for 3 hours at 160 ℃, and then taking out and naturally cooling.

And 8: and taking out the water cloth and taking out the inner mold core.

Technical Field

The invention relates to the technical field of hydraulic oil pipes, in particular to an oil suction and discharge rubber pipe for a back-tipping dumper.

Background

The hydraulic mechanism of the backward dump truck needs to use an oil suction and discharge rubber pipe, and the backward dump truck is required to have good oil resistance, heat resistance, aging resistance, flexibility resistance and fatigue resistance, and has high bearing capacity and excellent pulse resistance. The existing rubber tube often has the phenomena of unstable pressure, even tube burst and the like in the permanent process. When an oil pump absorbs oil, the phenomenon that the inner rubber layer integrally falls off sometimes occurs, and the use requirement can not be well met.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an oil suction and discharge rubber tube for a tip-back dump truck and a processing method thereof.

In order to solve the problems, the invention adopts the following technical scheme: the utility model provides a turn over after with inhaling oil discharge rubber tube, characterized by includes by inside toward 5 outer structural layers constitute, does in proper order: the inner rubber layer and the outer rubber layer are made of chlorinated polyethylene, the inner pressurizing layer and the outer pressurizing layer are formed by winding a cord which is externally wrapped by a layer of chlorinated polyethylene, the winding directions of the inner pressurizing layer and the outer pressurizing layer are opposite, clockwise winding and anticlockwise winding are respectively realized, and the spiral steel wire layer is formed by spirally winding a steel wire.

Further: the distance between the steel wires of the spiral steel wire layer is 0.6 cm.

The invention also relates to a processing method of the oil suction and discharge rubber pipe for the back dump truck, which is characterized by comprising the following steps of:

step 1: extruding chlorinated polyethylene onto the inner mold core through an extruder to form an inner adhesive layer;

step 2: wrapping a layer of chlorinated polyethylene on the outer layer of the cord, and winding the cord wrapped with a layer of chlorinated polyethylene on the outer part of the inner rubber layer through a winding machine to form an inner pressurizing layer;

and step 3: spirally winding a steel wire outside the inner pressurizing layer by using a winding machine to form a spiral steel wire layer;

and 4, step 4: winding the cord wrapped with a layer of chlorinated polyethylene outside the spiral steel wire layer by a winding machine, wherein the winding direction is opposite to that of the inner pressurizing layer, so as to form an outer pressurizing layer;

and 5: extruding chlorinated polyethylene onto the outer pressurizing layer through an extruder to form an outer rubber layer;

step 6: winding the water cloth outside the outer glue layer through a water cloth winding machine;

and 7: and (4) putting the whole in the step 6 into a vulcanizing tank, preserving heat for 3 hours at 160 ℃, and then taking out and naturally cooling.

And 8: and taking out the water cloth and taking out the inner mold core.

The invention has the beneficial effects that:

1. the rubber has good oil resistance, heat resistance, aging resistance, flexibility resistance and fatigue resistance, and has high bearing pressure and excellent pulse resistance.

2. The inner rubber layer and the outer rubber layer are both made of chlorinated polyethylene, so that the rubber tube has good oil resistance, heat resistance, aging resistance, flexibility resistance and fatigue resistance.

3. The inner pressurizing layer and the outer pressurizing layer are formed by winding a layer of cord wrapped with chlorinated polyethylene, and the winding directions of the inner pressurizing layer and the outer pressurizing layer are opposite, so that the rubber tube is high in pressure bearing capacity and excellent in pulse resistance.

4. The spiral steel wire layer is formed by spirally winding steel wires, and the distance between the steel wires is 0.6cm, so that the rubber tube has high pressure bearing capacity and excellent pulse resistance.

5. The inner rubber layer and the outer rubber layer are extruded by an extruder, so that the inner surface and the outer surface of the rubber tube are smooth and attractive, and the cracking phenomenon in the using process is avoided.

6. The inner pressurizing layer and the outer pressurizing layer are formed by winding the cord with the outside wrapped by the chlorinated polyethylene layer, the material of the outside wrapping of the inner pressurizing layer and the outer pressurizing layer is the same as that of the inner rubber layer and the outer rubber layer, the adhesiveness of the inner pressurizing layer and the inner rubber layer, and the adhesiveness of the outer pressurizing layer and the outer rubber layer are stronger when vulcanization is carried out, and the phenomenon that the inner rubber layer integrally drops is effectively avoided.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1 inner rubber layer, 2 inner pressurizing layer, 3 spiral steel wire layer, 4 outer pressurizing layer and 5 outer rubber layer.

Detailed Description

As shown in fig. 1, the oil suction and discharge hose for the tip-back dump truck comprises an inner layer and an outer layer of 5 structural layers, which are sequentially as follows: interior glue film 1, interior pressure intensifying layer 2, spiral steel wire layer 3, outer pressure intensifying layer 4 and outer glue film 5, interior glue film 1 and outer glue film 5 be the chlorinated polyethylene material, interior pressure intensifying layer 2 and outer pressure intensifying layer 4 be the outside curtain winding that has wrapped up one deck chlorinated polyethylene and form, and the winding direction of interior pressure intensifying layer 2 and outer pressure intensifying layer 4 is opposite, is clockwise winding and anticlockwise winding respectively, spiral steel wire layer 3 form for steel wire spiral winding, the interval of steel wire is 0.6 cm.

The invention also relates to a processing method of the oil suction and discharge rubber pipe for the back dump truck, which comprises the following steps:

step 1: extruding chlorinated polyethylene onto an inner mold core through an extruder to form an inner rubber layer 1;

step 2: wrapping a layer of chlorinated polyethylene on the outer layer of the cord, and winding the cord wrapped with a layer of chlorinated polyethylene on the outer part of the inner rubber layer 1 through a winding machine to form an inner pressurizing layer 2;

and step 3: spirally winding steel wires outside the inner pressurizing layer 2 by a winding machine, wherein the distance between the steel wires is 0.6cm, and forming a spiral steel wire layer 3;

and 4, step 4: winding the cord wrapped with a layer of chlorinated polyethylene outside the spiral steel wire layer 3 through a winding machine, wherein the winding direction is opposite to that of the inner pressurizing layer 2, and an outer pressurizing layer 4 is formed;

and 5: extruding chlorinated polyethylene onto the outer pressurizing layer 4 through an extruder to form an outer rubber layer 5;

step 6: winding the water cloth outside the outer glue layer 5 through a water cloth winding machine;

and 7: and (4) putting the whole in the step 6 into a vulcanizing tank, preserving heat for 3 hours at 160 ℃, and then taking out and naturally cooling.

And 8: and taking out the water cloth and taking out the inner mold core.

The present invention is not limited to the above-described embodiments.