When milling a workpiece on a milling machine that has many workpieces on the milling machine, since the center of gravity of the workpiece is not near the center of the table or even outside the table, the result is that the force is unbalanced during the work, causing deformation of the table. Work table wear increases. When the workpiece is heavy, the workbench of the milling machine cannot even move. To solve this type of problem, a support device can be installed outside the milling machine.

The support device is mainly composed of a slider, a cage, a ball cage, an adjusting bolt and a base. The arranged plurality of balls are fixed by the cage under the slider and then placed on the base. Since the balls can be rolled in any direction, the slider can also move in any direction in the horizontal plane on the plane of the base, and the friction coefficient is small, and the movement is very flexible.

When supporting the workpiece, the support device should be placed on a platform near the milling machine and its length direction should be consistent with the workpiece feeding direction to better support the workpiece. Then, adjust the four bolts so that the upper plane of the base is horizontal, and also keep the upper plane of the block at the same height as the milling table. You can also adjust the lifting table of the milling machine to make the milling table equal to the upper plane of the slider. Thus, since the free movement of the slider in the horizontal plane and the height in the vertical direction are equal, the supporting device does not damage the positioning of the workpiece on the milling table, but only serves as a support. When the milling machine table is fed, the slider moves with the workpiece. After milling one end of the workpiece, the head is turned to return the slider to the original position, and the other end of the workpiece can be milled by positioning the clamping again.

Related products: GB4228 horizontal metal band sawing machine GB4230 horizontal metal band sawing machine: http://xysdxyjc.chinawj.com.cn/
'External support for milling long workpieces

Elevator Modernization

Elevator modernization (or lift modernisation) is the process of upgrading the critical parts of the elevator in order for it to be able to handle new technology, have better performance, improve safety, and even give the aesthetics an up-to-date appeal


Most elevators are built to provide about 20 years of service, as long as service intervals specified and periodic maintenance/inspections by the manufacturer are followed. As the elevator ages and equipment become increasingly difficult to find or replace, along with code changes and deteriorating ride performance, a complete overhaul of the elevator may be suggested to the building owners.

A typical modernization consists of controller equipment, electrical wiring and buttons, position indicators and direction arrows, hoist machines and motors (including door operators), and sometimes door hanger tracks. Rarely are car slings, rails, or other heavy structures changed. The cost of an elevator modernization can range greatly depending on which type of equipment is to be installed.

Modernization can greatly improve operational reliability by replacing mechanical relays and contacts with solid-state electronics. Ride quality can be improved by replacing motor-generator-based drive designs with Variable-Voltage, Variable Frequency (VVVF) drives, providing near-seamless acceleration and deceleration. Passenger safety is also improved by updating systems and equipment to conform to current codes.



Components needs to be replaced in different elevator modernization plan

Component Scheme of elevator modernization plan
Refurbishment work Partial modernization Full modernization Full replacement
Elevator car
Sling No No by building owners Yes
Door operator No by building owners Yes Yes
Cab design by building owners by building owners Yes Yes
Car doors by building owners by building owners Yes Yes
Car fixtures Yes by building owners Yes Yes
Wedges connected to the governor No No Yes Yes
Additional phone/intercom if they don't equipped by building owners Yes Yes Yes
Traveling cable No Yes Yes Yes
Hydraulic rams No No No Yes
Wire ropes No by building owners Yes Yes
Shaft
Counterweight No No No Yes
Guide rails No No No Yes
Buffers No No Yes Yes
Electrical components No No No Yes
Tapehead No Yes Yes Yes
Limit switches No Yes Yes Yes
Wiring No Yes Yes Yes
Compensations No No No Yes
Lobby
Shaft door components by building owners by building owners Yes Yes
Shaft doors by building owners by building owners by building owners Yes
Hall fixtures Yes by building owners Yes Yes
Machine room
Machines No by building owners Yes Yes
Controllers No Yes Yes Yes
Removal of the selector by building owners Yes Yes Yes
Overspeed governor No No Yes Yes
Additional unintended car movement protection device if they don't equipped by building owners by elevator safety code in countries
Backup battery or uninterruptible power supply No Yes Yes Yes




Benefits of elevator modernization

Modernization can greatly improve operational reliability by replacing mechanical relays and contacts with solid-state electronics. Ride quality can be improved by replacing motor-generator-based drive designs with Variable-Voltage, Variable Frequency (VVVF) drives, providing near-seamless acceleration and deceleration. Passenger safety is also improved by updating systems and equipment (such as double brake system, unintended car movement protection device on the brake system etc.) to conform to current codes.




With CEP traction elevator modernization, we use the existing elevator structure while upgrading the ride quality and reliability with state-of-the-art components. Upgrade to a CEP closed loop door operator or a sophisticated, energy saving VVVF inverter.

CEP traction elevator modernization can include:

  • CEP Microprocessor Based Control System
  • CEP Microprocessor Based Efficient Dispatch System
  • Energy Efficient AC Drives or SCR Drives on Existing AC Gearless Machines
  • Traction Machines (Geared / Gearless)
  • Rope Brake System
  • CEP Closed Loop Door Operating System
  • Car & Hall Pushbutton Fixtures & Indicators
  • Car & Counterweight Roller Guides
  • Seismic Upgrades
  • Security Upgrades
  • Cab Interior Renovations or Cab Replacement

NOTE: Complete tear-out modernizations are available.

Contact us TODAY for Right Modernization Package Available


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Elevator Modernization,Lift Modernisation,Passenger Lift Modernization,Passenger Elevator Modernization

CEP Elevator Products ( China ) Co., Ltd. , https://www.zjsmartcommercialescalators.com

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