Jiaozuo brake

Electric hydraulic brake manufacturers introduce the characteristics of six types of brakes: brakes can be divided into mechanical brakes, air brakes, hydraulic brakes, electric brakes, and manual brakes according to the driving components (categories). Common brakes are divided into friction type and non friction type. Friction type brakes are also divided into external block brake, internal expansion shoe brake, belt brake and disc brake, etc. Preventive maintenance of brakes usually includes: quantity inspection, quality inspection and regular replacement of hydraulic oil for hydraulic rod brake release; Regularly inspect and refuel the brake for wear and tear at each point; Timely replacement of brake bands and brake wheels after wear; Check and adjust the working status of the brake (such as the working stroke of the double brake push rod should be consistent, the stroke of the push rod of the two brake release devices should be controlled within lOmm, and the actions of the two brake release devices must be synchronized); Inspection of hydraulic push rod brake release motor and control circuit, etc

With the development of equipment towards large-scale, ultra large-scale, and automation, brakes are rapidly developing towards heavy-duty, multifunctional, intelligent, and maintenance free braking conditions. The overloading of braking conditions is to meet the matching braking requirements of large and ultra large heavy-duty mechanisms; Multi function mainly includes brake release interlocking function, manual release function, liner wear limit limit limit (interlocking) function, wear automatic compensation function, etc; Intelligence refers to the introduction of digital and computer technology into control systems; Maintenance-free refers to turning the manual adjustment function of the brake into an automatic adjustment function, while achieving high reliability of brake action and performance. In addition, achieving real-time maintenance of industrial brakes through remote monitoring is also an important development direction for brakes.

The safety brake is a mechanical brake set on the final shaft (drum shaft) of the transmission mechanism, generally only used on important lifting mechanisms (such as crane lifting mechanisms, boom pitch mechanisms, and inclined downward belt conveyors). Since the 1980s, with the rapid development of lifting and loading and unloading machinery towards large-scale and ultra large-scale, specialized and specialized, as well as semi-automatic and automated directions, the application of safety brakes has also rapidly developed. At present, safety brakes have been widely used in large-scale port specialized loading and unloading machinery, and large-scale specialized lifting equipment (such as power station gantry cranes, casting cranes, cable cranes, etc.) and inclined belt conveyors are being promoted and applied.

Specific production model:

YT1, ED, YTD.BYT1, BED, ED2, MYT1, ZED, DEd series electric hydraulic thrusters

JZ, MW, TJ2, ZWZA, ZWZ3 series electromagnetic brakes

YWZ, YWZ3, YWZ4, YWZ5, YWZ8, YWZ10, YWZ9, YWZ13, YW, YWL series electric hydraulic brakes

BYWZ, BYWZ3, BYWZ4, BYWZ5, BYWZ8, BYWZ10, BYWZ9, BYWZ13, BYW series electric hydraulic brakes

QP, CQP, QPC, CQPL, QPL, PDA series pneumatic caliper disc brake

DCPZ250, DCPZ300, DCPZ400 series electromagnetic caliper disc brake

YPZ2, YPZ3, YPZ1, YP series arm disc brake

SPZ symmetrical brake arm disc brake

SBD, SB series safety brakes

SH, ST series hydraulic failure protection brake

DADH, ADH, ADP series hydraulic direct acting brakes

SE series electromagnetic failure protection brake

SP series pneumatic failure protection brake

YFX, YDGZ, YLBZ, Series Windproof Wedge Brakes

YQP hydraulic disc brake

Xinhua Wu ED thruster

Electric hydraulic thruster ED-23/5, thrust 220N, stroke 50mm

Electric hydraulic thruster ED-30/5, thrust 300N, stroke 50mm

Electric hydraulic thruster ED-50/6, thrust 500N, stroke 60mm

Electric hydraulic thruster ED-80/6, thrust 800N, stroke 60mm

Electric hydraulic thruster ED-121/6, thrust 1250N, stroke 60mm

Electric hydraulic thruster ED-201/6, thrust 2000N, stroke 60mm

Electric hydraulic thruster ED-301/5, thrust 3000N, stroke 60mm

Oil for electric hydraulic thrusters

The thruster has been equipped with hydraulic oil according to regulations when leaving the factory. If the thruster has been stored for a long time (more than 6 months), screw out the plug (see Figure 1) before use to check whether the oil level is normal. If the oil level does not reach the specified level, hydraulic oil should be added to the specified level (see Figure 1), otherwise the thruster cannot work properly. The hydraulic oil grade can be found in Table 2 (Mobil, Shell, and other hydraulic oils equivalent to the grade in the table can also be used), and the hydraulic oil filled must not contain impurities or dirt (it should be filtered). When adding hydraulic oil, the push rod should be slowly pulled up and down several times to remove air from the hydraulic cylinder and ensure sufficient oil is added.

ambient temperature

-25 ℃~+50 ℃ -45 ℃~+50 ℃

Hydraulic oil grade DB-25 DTE-21 (Mobil) HL-10 YH-10 DB-45

The hydraulic oil used in the hydraulic system is selected based on the working environment when designing the system. The viscosity of the hydraulic oil is an important reference index when selecting it. The weather in your area is relatively cold, which can affect the viscosity of the hydraulic oil. Therefore, a good approach is to ask the design manufacturer. Because the system is designed by them, the designer has the right to speak. I myself also study hydraulic design, But hello, don't use hydraulic oil indiscriminately. Because the hydraulic system is quite particular about using hydraulic oil

Fault analysis and troubleshooting of the hydraulic push rod brake of the crane crane. It is difficult to lubricate and refuel each movable hinge point of the brake. According to maintenance regulations, the hinge point is lubricated with thin oil, but due to the structure of the brake, it is difficult to inject and store oil at the hinge point. Every time the driver refuels, they slowly inject the oil gun into the gap of the hinge point, and if they are not careful, it will drip onto the brake wheel or brake band. If the on-site maintenance conditions are fully considered in the design, it will bring more convenience to the on-site use.

At present, there are many faults in the hydraulic push rod brake used by people, and the main fault phenomena are:

(1) The square coupling between the motor shaft and the impeller shaft became loose and fell off, causing the motor shaft to spin while the hydraulic cylinder did not move.

(2) The push rod of the hydraulic push rod brake release device is bent and deformed, and the brake release device is not working properly.

(3) The hydraulic push rod brake spring is broken and the brake cannot be closed.

(4) The movable hinge point of the brake frame is stuck, and the opening and closing actions of the brake are slow or not moving.

(5) The movable hinge pin of the brake frame is loose, and the brake does not work properly;

(6) Brake bands and wheels are severely worn, resulting in reduced or lost braking torque.

(7) The drive motor of the hydraulic push rod brake release device is out of phase, and the motor and brake release device do not operate.