Hydraulic motors have a wide range of applications, generally summarized as two categories: one type of fixed equipment with hydraulic devices, such as various types of machine tools, hydraulic presses, rolling mills, injection molding machines, etc.; the other type of mobile equipment with hydraulic devices, such as cranes, various types of construction machinery, automobiles, aircraft, mining machinery, etc.. When the hydraulic motor needs to stop in the work process, often need to take braking measures to ensure safety. This article will introduce you to the hydraulic motor braking principle and several braking methods.
1. Braking principle of hydraulic motor
Generally speaking, the braking method of the hydraulic motor is as follows: when the hydraulic motor has a hydraulic shock due to braking, the buffer relief valve will be opened to release the surge pressure of the high-pressure side to achieve the purpose of buffering; at the same time, the low-pressure side will be replenished with oil from the tank through the check valve, to prevent the suction of the empty.
2. Hydraulic motor braking method
(1) Pressure braking method: use the brake valve for braking, when the need for braking, close the inlet valve and the return valve, while opening the brake valve, the braking pressure will be applied to a gear of the hydraulic motor, to achieve the effect of braking.
(2) Main reversing valve neutral function (blocking function) braking: motor oil circuit cut-off braking is realized through the neutral function of the main reversing valve.
(3) Spring brake: Some motors have an internal spring brake to realize mechanical braking.
(4) Overload valve braking: In order to prevent excessive hydraulic shock during the braking process, the motor assembly is generally equipped with an overload valve with high adjustable pressure.
3. Precautions to be taken when braking the hydraulic motor:
(1) There is no standard braking method for hydraulic motors, when choosing the braking method, the most suitable one should be chosen according to different application environments and situations.
(2) If the hydraulic motor has not been used for a long time, it needs to be warmed up in advance before use, so as not to obtain better braking effect, but also to effectively extend the service life of the hydraulic motor.
(3) After braking, you need to check whether the braking effect meets the requirements. Generally, you can judge the braking effect by checking the hydraulic pressure gauge or torque gauge.
When the hydraulic motor is damaged, it needs to be repaired and replaced in a timely manner, Hanjiu is a professional hydraulic motor production company, the production of a full range of products at affordable prices, if you have related needs, you can go to the official website of Hanjiu company to browse, and grow with our customers to provide innovative products and services, always adhere to our quality standards, so that our professional team to meet your needs.
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