Experts Analyze The Reasons For The Failure Of The Pressure Pipeline System

Time of issue:

2022-01-18

Experts Analyze The Reasons For The Failure Of The Pressure Pipeline System The experts of the withholding machine manufacturer will analyze some faults in the pressure pipeline for us today, and analyze the reasons for the faults. The hydraulic pipeline system of construction machinery is the power transmission system of the main engine of construction machinery, which can be described as the blood of the whole machine. The quality problems existing in the hydraulic pipeline system of domestic construction machinery are mainly manifested in the oil leakage, oil seepage and cleanliness of the pipeline system, and the product quality is not up to standard. Causes of failure of hydraulic hose assembly: (1) When the hydraulic hose assembly is crimping the fittings the crimping pressure is too large, and the inner rubber layer of the hose is damaged, causing oil leakage. (2) When the hydraulic hose assembly is crimping the fittings, the crimping pressure is not enough, resulting in oil leakage, oil leakage and pulling off. (3) Under the action of repeated pulse pressure, the jacket rebounds and the buckle pressure decreases, resulting in oil leakage, oil leakage and pulling off. (4) The machining accuracy of the joint is not up to standard, resulting in oil leakage and oil leakage at the interface. (5) The use method is incorrect, resulting in reduced service life. During the operation of the hose crimping machine, the operator needs to be familiar with the relevant production processes, be proficient in operating the crimping machine, tools, and labor protection supplies, and can only take up work after they are fully dressed. Before starting the machine, ensure that all fasteners are firm, that each running part and moving surface are free of obstacles, and that safety protection devices are complete. The joint surface of the mold seat and the mold should be kept clean, and there should be no hard objects such as metal chips. First of all, what are the operating steps of the hose crimping machine? 1. Use a ruler to measure the length of the hose sample. Use a caliper to measure the metal joint data and observe the inner diameter of the hose sample. Prepare the required hoses and fittings. Use a pipe cutter to cut the hose to the desired length and clean the inner hole of the hose. 2. Use a peeling machine to peel off the outer rubber of the hose, and then insert the hose into the metal joint sleeve. The outer rubber of the hose must be peeled off. Insert the metal fitting straight into the hose all the way to the bottom. Measure whether the hose is the same length as the hose sample. Machine the hose with a non-taper shrink machine. Adjust the specified data by the positioner according to the hose to be crimped. 3. Start crimping the hose, either using the manual crimping button or using the foot crimping button. Snap the hose into place, then press the mold open button. After crimping, use a caliper to measure the crimping data. The hose can reach the specified withholding data. After the withholding is completed, stop the machine and cut off the power supply. Secondly, what matters should we pay attention to during the operation of the hose crimping machine? 1. Tighten the positioning screws before installing the module. Before starting the machine, lubricating oil should be injected into the inclined surface of the die base. It is strictly forbidden to use the oil cylinder over-travel. If it shakes during pressurization or depressurization, it is strictly prohibited to process it. If the cylinder piston vibrates or the oil pump makes a sharp noise, the gas should be discharged. 2. The pressure regulating valve should be adjusted to the specified pressure and calibrated regularly. It is strictly forbidden to put your hands on the crimping part when the equipment is running. The replacement of the mold should be carried out after the shutdown. When the temperature of the working oil exceeds 45°C, the machine should be stopped for inspection.

The hydraulic pipeline system of construction machinery is the power transmission system of the main engine of construction machinery, which can be described as the blood of the whole machine. The quality problems existing in the hydraulic pipeline system of domestic construction machinery are mainly manifested in the oil leakage, oil seepage and cleanliness of the pipeline system, and the product quality is not up to standard.
Causes of failure of hydraulic hose assembly:

(1) When the hydraulic hose assembly is crimping the fittings the crimping pressure is too large, and the inner rubber layer of the hose is damaged, causing oil leakage.

(2) When the hydraulic hose assembly is crimping the fittings, the crimping pressure is not enough, resulting in oil leakage, oil leakage and pulling off.

(3) Under the action of repeated pulse pressure, the jacket rebounds and the buckle pressure decreases, resulting in oil leakage, oil leakage and pulling off.

(4) The machining accuracy of the joint is not up to standard, resulting in oil leakage and oil leakage at the interface.

(5) The use method is incorrect, resulting in reduced service life.

During the operation of the hose crimping machine, the operator needs to be familiar with the relevant production processes, be proficient in operating the crimping machine, tools, and labor protection supplies, and can only take up work after they are fully dressed. Before starting the machine, ensure that all fasteners are firm, that each running part and moving surface are free of obstacles, and that safety protection devices are complete. The joint surface of the mold seat and the mold should be kept clean, and there should be no hard objects such as metal chips.

First of all, what are the operating steps of the hose crimping machine?

1. Use a ruler to measure the length of the hose sample. Use a caliper to measure the metal joint data and observe the inner diameter of the hose sample. Prepare the required hoses and fittings. Use a pipe cutter to cut the hose to the desired length and clean the inner hole of the hose.

2. Use a peeling machine to peel off the outer rubber of the hose, and then insert the hose into the metal joint sleeve. The outer rubber of the hose must be peeled off. Insert the metal fitting straight into the hose all the way to the bottom. Measure whether the hose is the same length as the hose sample. Machine the hose with a non-taper shrink machine. Adjust the specified data by the positioner according to the hose to be crimped.

3. Start crimping the hose, either using the manual crimping button or using the foot crimping button. Snap the hose into place, then press the mold open button. After crimping, use a caliper to measure the crimping data. The hose can reach the specified withholding data. After the withholding is completed, stop the machine and cut off the power supply.

Secondly, what matters should we pay attention to during the operation of the hose crimping machine?

1. Tighten the positioning screws before installing the module. Before starting the machine, lubricating oil should be injected into the inclined surface of the die base. It is strictly forbidden to use the oil cylinder over-travel. If it shakes during pressurization or depressurization, it is strictly prohibited to process it. If the cylinder piston vibrates or the oil pump makes a sharp noise, the gas should be discharged.

2. The pressure regulating valve should be adjusted to the specified pressure and calibrated regularly. It is strictly forbidden to put your hands on the crimping part when the equipment is running. The replacement of the mold should be carried out after the shutdown. When the temperature of the working oil exceeds 45°C, the machine should be stopped for inspection.

Keyword:

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Be Careful When Installing And Debugging The Hose Crimping Machine

What Should Be Paid Attention To When The Hose Crimping Machine Fails

Be Careful When Installing And Debugging The Hose Crimping Machine

What Should Be Paid Attention To When The Hose Crimping Machine Fails