Jiaozuo brake

Installation method for brake wheel coupling of electric hydraulic brake

The alignment of the coupling is divided into four steps. Now let's talk about it in detail.

1. Radial alignment of coupling

When aligning the coupling, the vertical direction should be adjusted first. The thickness of the front and rear foot pads can be calculated using three-point detection data to detect the offset of the two axes. The diameter of the outer edge of the movable end coupling plus the distance from the outer edge of the coupling to the center of the axial dial indicator rod hole; The distance from the end face of the movable end coupling to the center of the movable end front foot bolt; The distance between the center of the movable end front and rear foot bolts. From the above data, it can be seen that the thickness of the front and rear foot pads. If the motor is higher than the fixed end, the gasket should be reduced; If the motor is lower than the fixed end, a gasket should be added.

After adjusting the vertical direction, the detection data at each point has changed, and it should be reset to zero at point 1, and the data at points 2 and 3 should be re measured. After adjustment, simply check whether the sum is within the allowable error range.

2. Coupling principle alignment

The projection of the movable end face circle of the motor on the fixed end face is approximated as a circle, as the distance from the movable end center to the fixed end face remains unchanged. If you want to meet both requirements, the movable end axis and the fixed end axis are definitely on the same line, which is just an ideal alignment state. When actually aligning, set the allowable error first. When the error generated during alignment is within the allowable error range, the alignment ends. In many situations, the lower detection point of the pump cannot be detected, and alignment work will not be possible.

3. Three point marking method alignment steps

(1) Fix the magnetic fixing seat, measuring rod, and dial indicator on the coupling of the fixed end and the movable end respectively; (2) Turn the axis to the 1 point position and reset the two dial indicators to zero; (3) Turn the axis to the 2 o'clock position again and read the data; (4) Turn the axis to the 3 o'clock position again and read the data; (5) Calculate separately (6) Loosen the front and rear foot bolts of the motor, place thick washers on the front and rear feet of the motor, move the motor as close as possible to the two couplings, then tighten the front and rear foot bolts of the motor, reset the two dial indicators at point 1, read the data at points 2 and 3, and compare with the set allowable error value. If the accuracy requirements are not met, repeat steps 2-6 above; (7) After step 6 is met, slightly loosen the front and rear foot bolts of the motor, keep the dial indicator at 3 o'clock position, and use a copper rod to tap the front and rear feet of the movable end, as well as the middle of the movable end, to align horizontally until it is within the allowable error range; (8) After step 7 is met, tighten the front and rear anchor bolts of the movable end, and the alignment is completed.

4. Axial alignment of coupling

Horizontal alignment does not require the calculation of the front and rear feet of the movable end. The axial and radial dial indicators are reset at 1 point, and the readings of the axial and radial dial indicators are taken at 3 points. The movable end is then tapped with a copper rod to adjust the axis. Firstly, observe the reading of the axial dial indicator, and use a copper rod to tap the front and rear feet of the movable end to adjust the axial reading at the 3-point position to half of the original value. Observe the reading of the radial dial indicator again, tap the middle of the movable end with a copper rod, and adjust the radial reading at the 3 point position to half of the original value. This requires repeated adjustments. The adjustment results should be within the allowable error range.

Measures for diaphragm coupling device: Before the diaphragm coupling device is installed, the end faces of both shafts should be cleaned and the common conditions such as key grooves on the end faces should be reflected; In the future, if the diaphragm coupling device operates normally for one shift, it is necessary to reflect on all screws; In order to avoid fretting wear of the diaphragm during high-speed operation, resulting in micro cracks in the diaphragm bolt holes and damage, solid smooth agents such as Molybdenum disulfide can be applied between the diaphragms or the surface of the diaphragm can be treated with anti-wear coating. High speed diaphragm coupling; It is necessary to prevent the occurrence of prolonged overloading and operational chaos; During the operation of the task, it is necessary to frequently reflect on whether the diaphragm coupling can experience abnormal phenomena. If there are abnormal phenomena, it is necessary to carry out maintenance as soon as possible; Appropriate safety protection measures must be adopted in various places where the operation of diaphragm couplings can cause personal and equipment chaos. Pay attention to the issue with the coupling device and handle it correctly to ensure the completion of installation. Regular observation, inspection, and maintenance work should be carried out to achieve practical installation.

Brake specific model:

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

YT1, ED, YTD. series electric hydraulic thrusters

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

How to repair and pay attention to electric hydraulic brakes?

service

1. Master cylinder reservoir storage

Attention: Do not overfill the brake fluid. Overfilling brake fluid can cause the brake fluid to overflow onto the engine exhaust components during braking system operation, which can easily cause fire and personal injury.

The main cylinder reservoir is connected to the main cylinder through a conduit. The reservoir is located on the left side of the vehicle, under the hood. The main cylinder reservoir contains sufficient brake fluid, therefore, under normal conditions, the reservoir does not require maintenance. The low brake fluid sensor in the master cylinder will issue a warning when the brake fluid level is below standard.

Before disassembling the reservoir cover, it is necessary to clean it to prevent dust from entering the reservoir.

·Remove the rotating cover and diaphragm.

·The filling amount of the reservoir must not exceed the maximum filling level.

·Install the rotating cover and diaphragm.

2. Replacement of the main cylinder reservoir

1) Disassembly

·Remove the junction box of the liquid level sensor.

·Remove the outer cover of the brake reservoir. Drain the liquid from the guide sleeve.

·Use a siphon to drain the brake fluid in the brake fluid tank as empty as possible.

·Separate the brake master cylinder from the infusion pipe.

Important precautions: Pay attention to emerging brake fluid.

·Use a water guide to lift the cover of the adjacent wall and open the brake fluid tank.

·Pry open the cover of the infusion pipe on the brake master cylinder.

·Check if the reservoir is cracked or deformed. If necessary, replace the reservoir.

·Clean the reservoir with compressed air that does not contain lubricating oil.

·Dry the storage tank with compressed air that does not contain lubricating oil.

2) Installation

·Apply a new seal with brake pump adhesive, insert the brake master cylinder, and install the infusion pipe.

·Assemble the brake reservoir with a new hex nut.

The tightening torque from the brake fluid reservoir to the next wall is 3 Newton-metre.

·Install the water guide and partition cover.

·Connect the liquid level sensor electrical connector.

3) Inspection