ZPMC
九阳豆浆机维修YW.YWB.YWZ5.YWZE Series
Electro-hydraulic drum brake
Contents
1. General (1)
2. Installation and Adjustment before operation (1)
2.1 Installation before the brake installation (1)
2.2 Installation of brake (4)
2.3Adjustment (6)
3. Operation and Maintenance of brake (7)
3.1 Operation of brake (7)
3.2 Maintenance of brake (8)
1.General
YW\YWB\YWZ5\YWZE ries Electro-hydraulic Drum Brake (hereinafter called brake briefly) is widely ud for deceleration and stop/braking of various crane, belt transport, port handling machinery and metallurgical machinery.
The construction of drum brake is shown as fig2-1.
Principle of operation: When the mechanism is cut off, the thruster- the actuator of the brake is also
de-energized (or postponed) and stop driving (thrust is eliminated), the force of brake spring is acted on the braking surface by the both side braking arms, producing a rated pressure to t up a nominated torque. When the mechanism is energized, the thruster start driving and produce a enough force to push up the push-rod, the brake spring is compresd further and the brake arms are opened outside, the brake shoes is free of the brake drum.
The brake has such advanced characteristic as shoe aligning, automatic shoe clearance balancing. The brake can equip automatic lining wear compensation device to keep the clearance and torque equal, so it is unnecessary to adjusting during operation.
The brake can realized failure signal, lining wear limit indication (interlocking) and other additional function for modern effective handling machinery by equipping additional devices, such as all kinds of limit switch to PLC (programmable control) according to different requirements. In order to ensure the customers u the brake conveniently and safely, hand relea lever and safe interlocking switch are also equipped when ordered.
In addition the anticorrosive product are supplied, all of the fasten parts and pins are made from stainless steel, the other construction parts are coated anticorrosive paint. The brake fit the condition by the a and of the steelworks.
The brake adopts the company's YTD or Ed ries thruster as corollary equipment, advanced technology, reliable quality, long rvice life and no leakage absolutely. Usually the brake lining is made from a half-metal slim material (non-asbestos). It is a really "natural product"-no noi and no pollution. As the customer requested, the brake lining made from mixture of rubber, asbestos and copper wire is also supplied. 2.Installation and adjustment before operation
In order to ensure the brake operating properly, plea install the brake in accordance to the procedure stipulated in the manual correctly. If you need assistance or rvice of installation, plea contact with the company's after-sale department.
2.1 Inspection before the brake installation
死党的意思
2.1.1 Inspection of brake
a. Are the parts and components of the brake complete;
The model with addtional function
熊的简笔画Fig.2-1
1.lifting spot
2.brake spring
天津大学地科院
4.angle lever
5.thruster
6.arm
7.brake shoe 8.connecting bolt 9.tighten nut 10.balancing lever 11.interlocking pin画小树
12.cable entry 13.brake rod 14.compensation device 15.tinhten bolt 16.clearance adjusting nut 17.hand-relea lever 18.limit switch
Standard model
b. Is the action of brake maneuverable;
c. If there is any oil (grea), paint or other contamination stuck on the brake lining that may affect the friction force;
d. Check if the type of brake (including electrical voltage , frequency and thrust force of the Electro-hydraulic thruster) meets requirements;
If any of all above do not meet the requirement, plea resolve the trouble firstly before installation.
2.1.2 Inspection of the brake drum
a. The surface of the brake drum shall not have defects such as corrosion, oil (grea) contamination, unevenness and etc. The brake drum which has cracks or any other defects is strictly prohibited from using;
b. When the brake drum rotate around the axis, the diameter run-in shift with the diameter of the brake drum: when the diameter is no more than 250mm,the diameter run-in is limited within 0.1mm,when the diameter is within 250~500mm,the diameter run-in is no more than 0.2mm,when the diameter is within 500~800,the diameter run-in is no more than 0.15;
健脾胃的食疗方法>梦到洗澡c. Roughness of the both side surfaces of the brake drum shall be 3.2,excessive rough or smooth surfaces may result in difference of braking performance;
2.1.3 Construction and inspection of the brake foundation ba.
a. The brake foundation ba shall be firm and lever with accurate installation dimension;
b. If the brake foundation ba is installed together with the brake, they should be cured (by welding or bolts) after they have been positioned accurately;
c. If the installation bores on the brake foundation ba have not been drilled, they shall be drilled after the brake has primarily been positioned correctly.
The relative tolerance between the surface of the foundation ba and the brake drum (refer to fig.2-2) shall not exceed the value listed in table 2-1.
Fig.2-2
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