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FLEXLIFT RFK Series Manual

Flat belt scissor lift tables
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FLEXLIFT Flat Belt Scissor Lift Tables

Table of contents

1
FUNDAMENTALS ............................................................................................................................ 5
1.1.1
Safety Messages in this Manual .................................................................................................................. 5
1.1.2
Who is this Manual Intended for? .............................................................................................................. 5
1.1.3
Illustrations in this Manual ......................................................................................................................... 6
1.1.4
Frequently Used Expressions in this Manual .............................................................................................. 6
.............................................................................................................................................. 8
2
SAFETY .......................................................................................................................................... 9
...................................................................................................................................... 11
3
TECHNICAL DESCRIPTION ............................................................................................................. 13
:
3.2.1
Top Frame and Base Frame ...................................................................................................................... 14
3.2.2
Scissors Arms ............................................................................................................................................ 14
3.2.3
Track Rollers and Roller Tracks ................................................................................................................. 15
3.2.4
Center Bearing .......................................................................................................................................... 16
3.2.5
Anti Fall Device.......................................................................................................................................... 17
3.2.6
Automatic Lubrication .............................................................................................................................. 17
3.3.1
Winding Shaft............................................................................................................................................ 18
3.3.2
Deviating Roller ......................................................................................................................................... 19
3.3.3
Cam Roller Shaft ....................................................................................................................................... 20
3.3.4
Slack Belt Switches .................................................................................................................................... 21
3.3.5
Cardan shaft .............................................................................................................................................. 21
4
INTENDED USE ............................................................................................................................. 23
5
TRANSPORTATION ....................................................................................................................... 24
6
ASSEMBLY AND COMMISSIONING ................................................................................................ 25
6.2.1
The Underground at the Assembly Location ............................................................................................ 25
6.2.2
Personnel Requirements for Assembly ..................................................................................................... 26
6.2.3
Control of the Lift Table during Assembly ................................................................................................ 26
6.2.4
Frequency Converter and Ramps .............................................................................................................. 26
6.2.5
Safety Limit Switch .................................................................................................................................... 26
6.2.6
Lifting Equipment, Tools, Material ............................................................................................................ 26
Instruction Manual - Table of contents
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Summary of Contents for FLEXLIFT RFK Series

  • Page 1: Table Of Contents

    FLEXLIFT Flat Belt Scissor Lift Tables Table of contents FUNDAMENTALS ..........................5 1.1 A ....................... 5 BOUT THIS PERATING ANUAL 1.1.1 Safety Messages in this Manual ........................5 1.1.2 Who is this Manual Intended for? ......................5 1.1.3 Illustrations in this Manual ......................... 6 1.1.4...
  • Page 2 FLEXLIFT Flat Belt Scissor Lift Tables 6.3 H ..............27 OW TO VOID AMAGE TO THE ABLE DURING SSEMBLY 6.4 P ................... 28 OSITIONING AND SSEMBLING THE ABLE 6.4.1 Setting up the Lift Table at the Place of Use ..................... 28 6.4.2...
  • Page 3 FLEXLIFT Flat Belt Scissor Lift Tables Instruction Manual - Fundamentals...

  • Page 4: Fundamentals

    You have purchased a high-quality scissors lift table from FLEXLIFT. We would like to point out that the FLEXLIFT scissors lift table fully complies with the valid provisions of the European Machinery Directive and the European standards for scissors lift tables EN 1570.

  • Page 5: Illustrations In This Manual

    FLEXLIFT Flat Belt Scissor Lift Tables 1.1.3 Illustrations in this Manual Since FLEXLIFT lifting tables are highly adapted to the respective project requirements and many construction details differ, illustrations in this manual can only serve as examples. The number and exact position of components and assemblies as well as their sizes and proportions may vary on the lift table.

  • Page 6: Conditions For Repair And Modifications

    1.4 Industrial Property Rights We would like to point out that various design principles of FLEXLIFT lifting devices or certain built-in parts are protected by patents. Copying and selling these systems as well as forwarding documents and drawings to third parties requires the permission of the manufacturer or will be prosecuted.

  • Page 7: Rfk Series

    1.6 RFK Series The Flexlift RFK series comprise scissors lift tables, which are driven by a flat belt drive. They are available in numerous power variants, platform sizes and lifting heights and can be used in a wide range of applications.

  • Page 8: Safety

    Safety devices, barriers and safety circuits must never be bridged or removed during operation. If safety devices have to be overridden for maintenance or repair work, this is clearly stated in these instructions. FLEXLIFT safety components cannot compensate control errors caused by external controls, or only to a limited extent.

  • Page 9: Safety Regulations For Scissors Lift Tables

    FLEXLIFT Flat Belt Scissor Lift Tables 1. Reference to the 2. Reference to the 3. Reference to the use 4. Factory plate operating instructions lubrication schedule of the maintenance and safety instructions supports 5. Indication of load 6. Prohibition sign: Ride, reach in, work below, 7.

  • Page 10: Safety Devices

    FLEXLIFT Flat Belt Scissor Lift Tables b) Enter the load or the lift table when load is raised (exception: skillet systems), c) Being under the top frame, reach into the lift table, or tread under the lift table or the load stay under the upper frame or the load of the lift table, reach into the lift table, unless the lift table is secured by maintenance supports.
  • Page 11 FLEXLIFT Flat Belt Scissor Lift Tables Anti-tilting bars The anti-tilting bars on the rollers prevent the lift table from "levering out", e.g. with an extremely one- sided load on the pedestal bearing side. Bellows A bellows serves as a physical barrier between the moving parts and the environment. It reduces the risk of serious injuries due to unintentional entry into the danger zone.

  • Page 12: Technical Description

    FLEXLIFT Flat Belt Scissor Lift Tables Technical description The scope of delivery includes all parts of the lift table as described below. Cabling and control unit is provided by the customer. The scissors lift is designed as a frame structure. The scissors arms have been manufactured as a distortion- proof rectangular frame from tubular profiles or flat steel.

  • Page 13: Top Frame And Base Frame

    FLEXLIFT Flat Belt Scissor Lift Tables 3.2.1 Top Frame and Base Frame 1 Base frame 2 Top Frame 3 Maintenance pole 4 Lower end position receptor screws (hard stops) Fig. 4: Example Top Frame and Lower frame (Belt Type Lift Table) The upper frame consists of a frame construction, depending on the lift table version with sheet metal covering.

  • Page 14: Track Rollers And Roller Tracks

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Cam 2 Round guide 3 Round guide support 4 Inner scissors arm 5 Outer scissors arm 6 Center bearing Fig. 5: Example scissors arms 3.2.3 Track Rollers and Roller Tracks Rollers at the ends of the scissors allow the floating bearing side to move. Replaceable wear rails in the upper frame and base frame protect the roller track frame material.

  • Page 15: Center Bearing

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Base frame 2 Wear rails 3 Track roller 4 Anti tilting bar 5 Screw connection 6 Hexagon socket screw 7 Distance sleeve 8 Track roller pin 9 Snap Ring Fig. 7: Wear rails and track rollers in the base frame 3.2.4 Center Bearing...

  • Page 16: Anti Fall Device

    FLEXLIFT Flat Belt Scissor Lift Tables 3.2.5 Anti Fall Device Prevents the lift table from falling in the event of a catastrophic failure, such as clutch failure or simultaneous breakage of all belts. 1 Hydraulic cylinder 2 Cylinder bolt with...

  • Page 17: Belt Drive Parts And Assemblies

    Must be activated before commissioning and marked with the date of activation. The grease cartridge must be replaced regularly, otherwise the warranty on the components of the drive unit will be voided. Refer to the manufacturer's documentation for further details and the Flexlift lubrication sheet. 3.3 Belt Drive Parts and Assemblies The belt drive converts the torque of a gear motor into a lifting movement.

  • Page 18: Deviating Roller

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Flange 2 Winding shaft 3 Belt clamping plate 4 Pedestal bearing of the snub roller 5 Snub roller 6 Belt 7 Set screw 8 Pedestal bearing, winding shaft 9 Hexagonal socket screw Fig. 11: Winding shaft and snub roller (not installed in every lift table) 3.3.2 Deviating Roller...

  • Page 19: Cam Roller Shaft

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Lower end of scissors 2 Hexagon socket screw 3 Deviating roller 4 Belt 5 Track roller 6 Track roller pin Fig . 12: Deviating roller 3.3.3 Cam Roller Shaft The cam roller shaft is located inside the scissors and is connected to the second end of the belts. For lifting, the cam roller shaft is pulled between the scissors arms, thus spreading the scissors open.

  • Page 20: Slack Belt Switches

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Scissors arm 2 Adjustment of belt 3 Threaded rod of the 4 Lube applicator tension belt attachment 5 Round guide 6 Round guide support 7 Cam shaft bracket 8 Lube cartridge 9 Belt attachment...
  • Page 21 FLEXLIFT Flat Belt Scissor Lift Tables 1 Winding shaft 2 Winding shaft flange 3 Screw connection 4 Universal joint to winding shaft 5 Sliding joint 6 Cardan joint to motor 7 Cardan shaft Flange 8 Motor shaft flange shaft motor side Fig .

  • Page 22: Intended Use

    FLEXLIFT Flat Belt Scissor Lift Tables Intended Use Lift table with two or more fixed stops for lifting and lowering loads in automatic or manual operation. Load transition can take place in raised or lowered position. The lift table can be equipped with customer- supplied devices (superstructure), such as conveyors.

  • Page 23: Transportation

    FLEXLIFT Flat Belt Scissor Lift Tables Transportation This chapter covers transportation to and from the installation site. In addition, these regulations apply for internal transports, such as for example for installation in another factory hall. 5.1 Safety during transport The following points must be implemented to avoid personal injury and damage to the system.

  • Page 24: Assembly And Commissioning

    FLEXLIFT Flat Belt Scissor Lift Tables Assembly and Commissioning Proper assembly and commissioning is a basic prerequisite for the safe functioning of the lift table over its entire service life. The installation and commissioning of the lift table may on request be surprised by the manufacturer or by personnel trained by the manufacturer, against surcharge! 6.1 Safety during Installation and Commissioning...

  • Page 25: Personnel Requirements For Assembly

    We recommend a safely reduced speed (≤ 33 mm/s). The controller must already be completely programmed according to the FLEXLIFT terminal diagram (submitted with the release documents). All sensors of the lift table, in particular the safety limit switches and, if applicable, the stop valve of the safety cylinder must be integrated into the control system.

  • Page 26: How To Avoid Damage To The Lift Table During Assembly

    FLEXLIFT Flat Belt Scissor Lift Tables  Drill  Set of common locksmith tools  Torque wrench  Welding machine  Steel jack, chain hoists Material Appropriate fastening material for the respective sub-structure. Shims with different thicknesses (1, 2, 3 and 5 mm).

  • Page 27: Positioning And Assembling The Lift Table

    FLEXLIFT Flat Belt Scissor Lift Tables Green arrow: Correct winding direction. (1) Belt clamping piece (2) Winding shaft (3) Initial windings 2 to 2.5 windings (yellow) must always remain on the winding shaft. Fig. 15: Cross section: winding of the belts on the winding shaft...

  • Page 28: Setting Up The Lower Frame

    FLEXLIFT Flat Belt Scissor Lift Tables 6. Remove any anti-rotation device on the winding shaft only after the connection to the motor has been established. 6.4.2 Setting up the Lower Frame |NOTE| Risk of shortening the service life of bearings and drives due to unclean running. The lower frame must be aligned very precisely horizontally in longitudinal and transverse direction! The maximum permissible deviation is 1 mm for the total lower frame length.

  • Page 29: Mounting Motors

    FLEXLIFT Flat Belt Scissor Lift Tables 2. Weld the shims of the shim packs together (to prevent the individual shims from slipping later due to vibrations). However, do not weld the package to the lower frame. 3. After lining, tighten all fixing screws of the lower frame.

  • Page 30: Determine And Set Lower End Position

    FLEXLIFT Flat Belt Scissor Lift Tables 2. When adjusting the body component vertically, use the upper frame (or its crossmembers) as the reference plane - do not align with the floor or lower frame! 3. An unbalanced load of the lifting table in transverse direction resulting from the design (e.g. laterally protruding drive of a conveyor) must, if necessary, be compensated by a corresponding counterweight on the opposite side.

  • Page 31: Set The Lower End Position

    FLEXLIFT Flat Belt Scissor Lift Tables 2. Tighten the eyebolt further until the ring breaks off at the predetermined breaking point. 3. Note the date of activation on the cartridge 6.5.3 Set the Lower End Position The height of the lower end position is adjusted by adjusting the corresponding encoders. This setting must be made with the lift table unloaded.

  • Page 32: Operation

    FLEXLIFT Flat Belt Scissor Lift Tables Operation The lifting table is designed for integration into a complete system. Manual operation is intended only for maintenance and repair works. 7.1 Safety during Operation  The basic condition for operation is compliance with the general safety regulations ( Chapter 2.3 Safety Regulations for Scissors Lift Tables).

  • Page 33: Servicing And Repairing The Lift Table

    FLEXLIFT Flat Belt Scissor Lift Tables Servicing and Repairing the Lift Table The following chapters contain a chart with regularly performed maintenance work, the lubrication schedule and a troubleshooting chart. Detailed instructions for replacing defective parts and assemblies follow. 8.1 Safe Maintenance of the Lift Table ...

  • Page 34: Using Maintenance Supports For Safe Maintenance Of The Lift Table

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Maintenance wedges 2 Maintenance poles 3 Sling rod and Adaptor 4 Maintenance pins are relieve the load on the secure the upper frame for 2nd shaft end are used to fix the scissors...

  • Page 35: Torque Values For Screw Connections

    FLEXLIFT Flat Belt Scissor Lift Tables Insert Maintenance Supports Fig. 18: Maintenance poles (pluggable between upper and lower frame) 1. Ensure that the lift table is unloaded. 2. Lift the lift table to its full height. 3. Insert the maintenance supports onto the pins provided in the lower frame.

  • Page 36: Lubrication And Maintenance Of Pedestal Bearing Housings

    FLEXLIFT Flat Belt Scissor Lift Tables The belts used for this lifting table must be cleaned regularly to remove any dirt. If there are oils, waxes or similar substances in the air which settle on the belts, the belts may lose their adhesion to each other during the winding process.

  • Page 37: Smartphone Or Tablet -Pc

    To view the videos, an Internet connection with sufficient bandwidth is required. You can access the tutorial overview at the following address: Fig. 19: Leads to the overview page of the videos - https://www.flexlift.de/service/tutorials/ 8.9 Emergency Lifting and Lowering of the Lift Table In the event of a power failure or motor failure, the lift table can be driven with the aid of an electric drill.

  • Page 38: Lubrication Schedule

    FLEXLIFT Flat Belt Scissor Lift Tables Work to be carried out Cycle Remarks Visual check Weekly Inspection of the safety devices 12 months Prior to each commissioning Pillow block bearing on the winding shaft Basically maintenance-free Cleaning the belts Regularly Consider compatibility of belt and cleaning agent.

  • Page 39: Replacing The Lubricator Cartridge

    FLEXLIFT Flat Belt Scissor Lift Tables Maintenance intervals in months at cycle frequency <30 cycles/h <60 cycles/h >60 cycles/h Component Remark 3-shift 3-shift 3-shift Grease Track rollers lubricate 3 Mon. 2 Mon. 1 Mon. Bearing grease Pedestal bearing maintenance-free Center bearing maintenance-free ...

  • Page 40: Works On Scissors And Frame

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Lube cartridge 2 Cam shaft bracket 3 Lube line 4 Applicator (Plastic piece or brush) 5 Cam roller shaft Fig. 20: Seat of the automatic lubrication system Exchange procedure 1. Ensure that the lift table is unloaded.
  • Page 41 FLEXLIFT Flat Belt Scissor Lift Tables  Snap ring pliers  Puller  Hexagon socket wrench 1 Anti-tilting bar 2 Hexagon socket screw 3 Distance sleeve 4 Screw connection 5 Wear rails 6 Upper frame 7 Trackroller 8 Snap ring 9 Roller pin Fig.

  • Page 42: Replacing Track Rollers And Wear Rails In The Lower Frame

    FLEXLIFT Flat Belt Scissor Lift Tables 8.13.2 Replacing Track Rollers and Wear Rails in the Lower Frame Track rollers Wear rails Preferably track rollers and wear rails should be replaced as a set. Required tools  Snap ring pliers ...

  • Page 43: Replacing The Center Bearing Of The Scissors

    FLEXLIFT Flat Belt Scissor Lift Tables Fig. 23: For maintenance purposes, maintenance wedges relieve the load on the rollers and rails 6. Lower the lifting table and let the ends of the scissors arms slide onto the wedges. 7. Replace the track rollers.

  • Page 44: Replacing Pivot Bearing

    FLEXLIFT Flat Belt Scissor Lift Tables 1 Snap ring, pin 2 Center bearing pin 3 Snap ring, bearing 4 Spherical bearing 3 Threaded hole 6 Sliding disc (×4) 7 Center bearing 8 Bolt lock cassette (×2) Abb. 24: Exploded view spherical bearing Replacement Procedure 1.
  • Page 45 FLEXLIFT Flat Belt Scissor Lift Tables 1 Distance sleeve 2 Pivot bearing bolt 3 Pivot bearing 4 Scissors arm 5 Hexagon socket screw 6 Set screw Abb. 25: Pivot bearing Replace pivot bearing on upper frame 1. Ensure that the lift table is unloaded.

  • Page 46: Replacing The Anti-Fall-Device

    FLEXLIFT Flat Belt Scissor Lift Tables 9. Replace pivot bearing. 10. Lower the scissors arms again until the pivot bearings touch the base console. 11. Tighten the pivot bearing using a torque wrench. 12. Mount anti-tilting bars. |NOTE| – Risk of damage to the lift table due to misalignment of the pivot bearing side.

  • Page 47: Works On The Drive Train

    FLEXLIFT Flat Belt Scissor Lift Tables 3. Disconnect the lift table from the electrical mains and secure it against unintentional or unauthorized reconnection. 4. Remove the plug of the control cables (pressure switch, solenoid valve) from the safety cylinder. 5. Loosen the safety plates of the bearing bolts.
  • Page 48 FLEXLIFT Flat Belt Scissor Lift Tables 1 Flange 2 Winding shaft 3 Belt clamping plate 4 Pedestal bearing of the snub roller 5 Snub roller 6 Belt 7 Adjusting screw 8 Pedestal bearing, winding shaft 9 Hexagon socket screw Fig. 27: Winding shaft and snub roller (not installied in every lift table) Replacement procedure 1.

  • Page 49: Replacing The Belts

    FLEXLIFT Flat Belt Scissor Lift Tables |NOTE| After working on the drive, check the belt tension, it must be within the tolerance range for each belt ( 8.14.4 Checking and Adjusting the Belt Tension)! Carry out commissioning. 8.14.3 Replacing the Belts The belts must be replaced after 10 years (manufacturer's instructions).

  • Page 50: Checking And Adjusting The Belt Tension

    FLEXLIFT Flat Belt Scissor Lift Tables 9. Ensure that new belts are of correct dimensions. Compare to old belts. 10. Set the nuts on the threaded rods of the clamping forks to a distance of approx. 20 mm. 11. Guide the threaded rods through the wedge roller shaft and screw tight.

  • Page 51: Replacing The Cam Roller Shaft

    FLEXLIFT Flat Belt Scissor Lift Tables b) Adjust the belt tension of the belt with the greatest deviation at the belt connection. To do this use the nuts on the threaded rods. 7. Raise top frame, remove maintenance supports and raise and lower the top frame for five complete strokes.

  • Page 52: Replacing The Deviating Roller

    FLEXLIFT Flat Belt Scissor Lift Tables 2. Insert the maintenance supports and lower the lift table onto the maintenance supports. 3. Mark the position of the belts on the deviating roller. 4. Disconnect the scissors lift table from the electrical mains and secure it against unintentional or unauthorized reconnection.

  • Page 53: Replace Cardan Shaft

    FLEXLIFT Flat Belt Scissor Lift Tables 2. Lift and insert maintenance supports. 3. Lower the lifting table onto the maintenance supports. 4. Unwind the belt completely from the winding shaft during manual operation. 5. Disconnect the scissors lift table from the electrical mains and secure it against unintentional or unauthorized reconnection.
  • Page 54 FLEXLIFT Flat Belt Scissor Lift Tables 2. Insert maintenance supports. 3. Lower the lift table onto the maintenance supports. 4. Disconnect the lift table from the electrical supply and secure it against unintentional or unauthorized reconnection. 5. Loosen the screw connections of the two connecting flanges.

  • Page 55: Declaration Of Incorporation

    FLEXLIFT Flat Belt Scissor Lift Tables Declaration of Incorporation According to EC directive 2014/35/EU on machinery, (annex II B). Name and address of the manufacturer: FLEXLIFT Hubgeräte GmbH Eckendorfer Straße D-33609 Bielefeld We herewith declare, that the partly completed machinery described below:...

  • Page 56: Test Certificate

    FLEXLIFT Flat Belt Scissor Lift Tables 10 Test certificate  The scissors lift table must be inspected annually by an expert, taking into account all relevant standards and regulations for its construction and function.  All maintenance and repair work must be documented in order to avoid limitations in the warranty.

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