13D/13E Steering Drive Bridge Product Configuration Parameters
Project Parameter
Bridge type 13D/13E
Basic structural form Casting bridge shell
Rated load (kg) The two bridges have a total of 13T
Brake form Wet brake
Maximum external width (mm) 2240
Rim installation distance (mm) 2050
Main pin center distance (mm) 1730
Hanging and installation distance (mm) 900
Inner angle (°) 38
Outer angle (°) 29
Inclination angle of the main pin (°) Zero
Wheel tilt angle (°) Zero
The maximum working pressure of the steering cylinder (MPa) 29
The maximum working stroke of the steering cylinder (mm) Zero
The effective area of the cylinder (cm^2) 47.71
Front bundle (mm) ±2.5
Circular diameter of rim bolt distribution (mm) Ø275
Rim stop (mm) Ø220.45
Rim bolt 2×8×M22×1.5
Parking brake hydraulic interface M14×X1.5
Brakin torque (Nm) 26500
Brake release pressure (MPa) 1.5-3
Gearbox speed ratio 5.53
Main deceleration ratio 4.375
Wheel edge speed ratio 6
Rated output torque of the whole vehicle (Nm) 36290.625
The front axle is equipped with a 45% limited-slip differential
The rear axle is equipped with a differential lock, and the differential lock pressure is 1.53MPa.
The project is to support the 22-meter high-altalte truck with a mass of 13 tons and a total weight of 13.5 tons. The front axle is a steering drive bridge, carrying about 11 tons. The suspension system is in the form of oil and gas suspension, and it adopts a normally closed multi-disc wet brake. By increasing the number of disc surfaces and friction plates and friction discs, the braking torque is appropriately increased, and the braking torque of a single brake is 17500N.m. Compared with drum brake and disc brake, the brake torque is larger, and the brake torque can also be increased by adding friction pads and friction discs. When the oil line is disconnected or leaking, the brake automatically generates parking braking power to ensure safety. Due to friction braking in a cooling lubricant with a certain viscosity, the adhesion of the liquid between the friction plate and the friction disc also needs to be overcome, so that the wear of the friction plate and the friction disc is less than the dry one. At the same time, the heat energy generated during braking is taken away through the coolant and enters the heat dissipation system, which avoids the modification of the friction material by high temperature and increases The service life is 4 to 6 times longer than the cycle of replacing brake consumables of disc brakes and drum brakes.
The rear axle is a steering drive bridge, carrying about 3 tons, and the middle rear axle suspension is rigid suspension. The planetary reduction structure adopted by the middle and rear axle wheel edge reduction obtains a reliable maximum output torque value through finite element analysis and the design calculation of the gear transmission system. The whole planetary wheel frame structure is adopted, which reduces a large number of parts, effectively reduces costs, and greatly improves production efficiency.
