DYW Series Explosion Protected Electro-hydraulic Drum Brakes: Installation Methods & Matching Accessories

 

 

1. Installation Methods

DYW series flameproof electro-hydraulic drum brakes are safety braking equipment dedicated to flammable and explosive hazardous sites such as underground coal mines and chemical factories, complying with GB3836 explosion-proof standards (Ex d I for coal mine underground, Ex d IIB T4 for chemical gas environments). Matched with BEd explosion-proof electro-hydraulic thrusters, vertical upward thruster mounting is the standard layout; customized horizontal side brackets are available for narrow vertical space. Mounting dimensions follow national mechanical industry standards and support interchangeable replacement of old flameproof brake models.

Standard Vertical Installation

Fix the integral cast brake base firmly on a flat rigid support frame with high-strength anti-loose bolts. Ensure two brake shoes are symmetrically distributed on both sides of the brake drum, and the central axis of the brake frame is strictly coaxial with the brake drum to avoid eccentric friction, local overheating and uneven lining wear.

Mount the supporting BEd explosion-proof electro-hydraulic thruster vertically upward on the brake swing arm. Guarantee the thruster push rod moves straight without deflection to output stable opening thrust when energized. All flameproof joint surfaces of the thruster shall be inspected for scratches, rust and deformation before assembly.

The built-in linkage equal-gap balancing mechanism automatically maintains uniform clearance between friction linings and the drum on both sides, reducing frequent manual calibration and preventing unilateral shoe dragging.

Reserve sufficient surrounding operation space for friction lining replacement, braking torque adjustment, thruster oil change and flameproof structure routine inspection.

Complete explosion-proof wiring strictly under power-off state; use matched flameproof cable glands, reliably connect grounding wires, and evenly fasten all junction box bolts to meet flameproof clearance requirements.

Optional Horizontal Side Mounting

Applicable to explosion-proof trolley running mechanisms and equipment with insufficient vertical installation height. Special customized flameproof transition brackets are required for lateral layout. After assembly, recheck the thruster oil level and reset spring elasticity to prevent incomplete braking or delayed release. Standard vertical BEd thrusters cannot be tilted excessively; tilt angle shall not exceed ±15°.

Core Explosion-Proof Installation Mandatory Requirements

All hinge pivot joints adopt maintenance-free self-lubricating bearings, apply lithium grease during assembly.

Thoroughly clean oil stains, rust and dust on the brake drum surface before trial operation; grease contamination will drastically reduce friction coefficient and braking safety.

Adjust pre-compression of the main braking spring via torque adjusting nuts to set the required rated braking torque.

Fail-safe working principle: Energize the BEd flameproof thruster to pull open brake shoes and release the brake; cut off power, the main braking spring pushes the linings to clamp the drum for automatic safety braking.

It is forbidden to replace original flameproof housing, cable glands and sealing parts with ordinary non-explosion-proof spare parts; damaged flameproof mating surfaces must be repaired before commissioning.

Reliable equipotential grounding of the entire brake set through dedicated grounding screws; ungrounded installation in explosion zones is prohibited.

Avoid long-term splashing water, heavy dust and corrosive gas erosion on the flameproof thruster casing.

Standard power supply: AC380V/660V/1140V, matching mine and chemical explosion-proof power distribution systems.

2. Standard Matching Accessories

Core Explosion-Proof Functional Supporting Components

BEd Series Flameproof Electro-Hydraulic ThrusterExclusive explosion-proof driving unit for DYW brakes, complete with flameproof junction box, sealing cable glands and adjustable connecting push rod assembly.

Manual Emergency Release LeverUsed for manually opening the brake during power failure or equipment static overhaul without damaging the flameproof structure.

Explosion-Proof Limit Position SwitchesDetect fully-braked and fully-released brake states, transmit feedback signals to explosion-proof control cabinets for safety interlock and fault alarm.

Consumable Spare Parts

Snap-on Quick-Replace Non-Asbestos Friction LiningsClamping plug-in structure for separate replacement without disassembling the whole brake frame; semi-metallic high wear-resistant linings optional for heavy-duty frequent braking mine equipment.

Complete Adjustment & Fastener KitContains torque adjusting nuts, clearance fine-tuning screws, lock bolts, hinge pins and auxiliary reset springs for long-term parameter recalibration.

Thruster Sealing Repair Kit & Special Hydraulic OilFlameproof compliant piston seals, dust rings, O-rings and low-temperature anti-wear hydraulic fluid for regular thruster maintenance and oil change.

Spare Flameproof Thruster CoilsCertified replacement stator coils for BEd thrusters when burnout occurs.

3. Optional Custom Explosion-Proof Accessories

Special horizontal mounting flameproof transition brackets for compact explosion-proof trolley layout.

Integrated dust & rain protective covers for open-air coal stockyard and port explosion-proof cranes.

Anti-corrosion coated brake frame and stainless steel anti-spark fasteners for coastal salt-fog chemical hazardous zones.

Buffer damping assemblies to reduce vibration and impact under frequent start-stop cycles in explosion environments.

Windproof auxiliary spring components for outdoor explosion-proof rail cranes to enhance parking anti-slip capacity under strong winds.

 

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