Jiaozuo brake

In the use of hydraulic brakes, the power supply of the electro-hydraulic push rod is generally connected in parallel with the power supply of the main motor of the equipment, and no separate circuit is taken. Therefore, it is suitable for the synchronous start and stop of the 380V three-phase AC power supply and the main motor. When powered on, the main motor starts to run, and at the same time, the motor of the brake drives the impeller to rotate, sucking oil from the upper part of the piston to the lower part of the piston, generating pressure to push the piston push rod up quickly, completing the rated stroke and reaching the specified thrust, The brake shoe opens and the equipment begins to operate normally. After the power outage, the main motor stopped rotating, and the push rod impeller also stopped rotating, losing oil pressure. The piston rapidly decreased under external force (spring reset), returned to its starting position, and the brake shoe brake.

For driving methods with voltage levels that are inconsistent with the main motor, the push rod motor should be powered separately, but attention should be paid to achieving interlocking control with the main motor to avoid overloading or burning of the main motor due to the power loss and braking of the push rod motor during the operation of the main motor. These are some points to pay attention to when using hydraulic brakes. The YTD2 (ED) series electric hydraulic thrusters are mainly used as operating components for the YWZ4, YWZ5, YWZ8, YWZ9, and YWZP series electric hydraulic block brakes. They are widely used in industries such as lifting and transportation, metallurgy, mining, ports, and construction.

Product Features

The shell is made of cast aluminum alloy, with light weight and beautiful appearance;

The motor is of non oil immersed structure, with Class B or F insulation (according to user requirements). Good heat resistance and long service life;

The motor junction box cover is equipped with a seal and uses a cable stuffing box for incoming lines, which is firm and reliable. The electrical casing protection level reaches IP55;

The surface of the motor shaft and push rod are plated with hard chromium treatment, greatly extending the service life of the sealing element;

The oil cylinder shell is equipped with a balance chamber on one side, which can allow the thruster to be installed in any direction from 0 to 180 °, thereby expanding its range of use;

All seals and bearings of the YTD2 series adopt world-renowned products, with reliable sealing and long service life;

The YTD2 series fasteners are made of stainless steel material, which is beautiful and durable.

Electric hydraulic thruster is a very compact drive control device integrating motor, centrifugal pump and oil cylinder. It is widely used as the drive device of various block brakes and disc brakes, and can also be used for the drive control of various industrial valves, gates, directional swing and rotation (<90 °) devices (mechanisms) and clamping devices. The main feature of the shell is cast aluminum alloy, with light weight and beautiful appearance. The motor is of a non immersed structure, with Class B or F insulation (according to user requirements), good heat resistance, and long service life. The motor junction box cover is equipped with a seal and uses a cable stuffing box for incoming lines, which is firm and reliable. The electrical casing protection level reaches IP55. The surface of the motor shaft and push rod are specially treated, greatly extending the service life of the sealing element. The oil cylinder shell is equipped with a balance chamber on one side, which allows the thruster to be installed in any direction from 0 to 180 °, thereby expanding its range of use. All seals and bearings are made of world-renowned products, with reliable sealing and long service life. The fasteners are made of stainless steel material, which is beautiful and durable. Additional device upper limit switch: can indicate whether the brake is on, whether the push rod is pushed to the specified position, and other information. Lower limit switch: It can indicate whether the brake is correctly closed, whether the push rod returns to the specified position, and other information. It can also set upper and lower limit switches. Add a built-in spring (only available for short stroke thrusters), which is determined by the user but must not exceed the built-in spring force (see parameter table). Adding a heater: When the ambient temperature at the place of use is below -25 ℃, if needed by the user, a heater can be added. The heater parameters are shown in Appendix 1. The rising and falling delay valves or the rising and falling delay valves can extend the rising or Fall time steplessly. The delay range is from the rated action time to 30 seconds. The specific delay value can be adjusted according to the user's requirements. The thruster is suitable for intermittent (S3-60%) and continuous (S1) working systems. Environmental temperature: generally -25~+50 ℃. When the specified environmental temperature is exceeded, please contact our technical personnel. Relative humidity: Generally, it should be ≤ 90%. When used in humid and hot areas or environments with corrosive atmospheres (gases), anti-corrosion products should be selected.

The hydraulic brake is the safety Wheel slide protection of the shearer, which is supplied by the auxiliary oil circuit of the pump box to release the brake. When the auxiliary oil supply is cut off, the spring presses the brake pad installed on the housing and the axially sliding brake disc installed on the motor gear with the help of the piston to produce Friction torque, and the machine is braked. The casing, cylinder body, and cover are fixed together with screws, and the hydraulic brake is fixed to the traction part casing with screws. Hydraulic oil enters the cylinder body through holes.

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