Today, the editor will summarize for you the adjustment methods of the pressure wheels and rollers of construction elevators. I hope it will be helpful to you. Before installation, loosen all the eccentric roller shafts of the cage and the driving mechanism or adjust the eccentricity to the maximum. The cage and the driving mechanism are installed in the guide rail frame and connected together. When the electric drive cage rises off the ground or breaks away from the ground buffer spring (or support), start by adjusting the driving mechanism. The adjustment method and sequence are as follows: 1. Use a special wrench to turn the lower double (single) balance wheel eccentric shaft to Adjust the eccentricity to control the mounting plate of the driving mechanism to remain perpendicular to the horizontal plane, and make the upper and lower balance wheels contact the guide rail evenly at the same time. Move each wheel body by hand to check whether the guide rail is pressed evenly
2. Use a special wrench Rotate the eccentric shaft of the rack back pressure wheel to adjust the side clearance when the gear rack meshes. Use a feeler gauge to control the side clearance during adjustment. At the same time, each pressure wheel should press the back of the rack evenly. Turn each wheel body by hand to check whether the tooth back is pressed evenly
3. Adjust the guide rollers on both sides of the guide rail in the same way. The adjustment key is to adjust the guide wheel on one side of the guide rail to lightly press on the guide rail. When the wheel body is turned by hand, it should be able to rotate but there is obvious blockage. The other side roller should maintain a gap with the guide rail
4. Adjust the cage according to the above method and sequence. If the driving mechanism and cage are in For an integrated lift, the cage should be adjusted according to the method and sequence of adjusting the driving mechanism
5. Power on the test machine to visually check the contact operation of each roller, and use the lead pressing method and coloring method to check the meshing of the gear pair.
6. Make fine adjustments to unsatisfactory parts. The key point is to fine-tune the meshing state of the gear pair. When contact spots as shown in the figure appear on the rack contact surface, it means that the driving mechanism is tilted to one side of the rail. At this time, the lower balance wheel (single wheel or double wheel) should be adjusted to make the drive The lower part of the mechanism moves toward the rail until the area of the contact spot reaches above the rack contact surface. The smaller the contact area, the easier it is to damage the gears and racks. On the contrary, it should be adjusted in the opposite direction. When the meshing backlash of the gear pair is greater than The side clearance is within a reasonable range. Otherwise, it should be adjusted in the opposite direction. At this time, the guide roller should be loosened, and then the guide roller should be adjusted according to the method of adjusting the guide roller.
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