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OPERATING AND MAINTENANCE INSTRUCTIONS

PULLEY WITH SAFETY BRAKE

FOR THE BUILDING INDUSTRY

by TORNOMECCANICA s.r.l.

Summary of Contents for Securpulley

Page 1: ...OPERATING AND MAINTENANCE INSTRUCTIONS PULLEY WITH SAFETY BRAKE FOR THE BUILDING INDUSTRY by TORNOMECCANICA s r l ...

Page 2: ...OMECCANICA s r l Genova Via Renata Bianchi 67N Tel 010 650 94 04 Telefax 010 650 94 05 SHEAVE FOR BUILDING INDUSTRY WITH SAFETY BRAKE MODEL SECURPULLEY SAFE WORKING LOAD 50 KG TORNOMECCANICA 99112036 1 2309 ...

Page 3: ... 5 Functional test before use 13 6 6 Lifting of loads building of scaffolds 14 15 6 7 Descent to ground of the empty rope 16 6 8 Lifting of the empty rope to the floor scaffolds dismantling 17 6 9 Lowering of loads 17 7 TROUBLE SHOOTING 18 8 INSTRUCTIONS FOR MAINTENANCE AND PERIODICAL CHECK 8 1 Generals 19 8 2 Periodical check and maintenance 20 8 3 Substitution of parts 21 8 3 1 Substitution of t...

Page 4: ...al part of the supply of the machine and must be kept with care and kept at the users disposal In case of incomprehension of the explanations of the manual of malfunctioning or for repair interventions that do not belong to the foreseen maintenance please contact our After Sale Service 2 SPECIFICATIONS WEIGHT kg 5 MAXIMUM WORKING LOAD kg 50 MINIMUM WORKING LOAD kg 8 10 MAXIMUM SUGGESTED WORKING HE...

Page 5: ...igths or loads exceeding the values indicated at chapter 2 Do not use ropes of diameters different from the ones indicated at chapter 2 Do not use ropes with the diameter reduced by wear below the minimum diameter indicated at chapter 2 nor with strands deformed o damaged The malfunctioning of the sheave and the possible troubles coming out from the use of a damaged rope are under the only respons...

Page 6: ...tests with 400 of rated load have been succesfully done on one prototype Each unit is tested with 150 overload These tests conform to the standard prEN 13157 Figure 1 SECURPULLEY assembly Legenda 1 Rotating sleeve 2 Supporting bracket 3 Sheave axle 4 Sheave 5 Side plates 6 Reeving roller 7 Wedge brake 8 balancing counterweight 9 counterweight unlocking screws 10 spacers counterweight side and reev...

Page 7: ...ing around an axle eccentric relative to the sheave axle In turns the two side plates bears the reeving roller 6 the floating wedge brake and the balancing counterweight 8 La counterweight 8 position setting is done by the loosening of the screws 9 which requires for safety reasons of a special key supplied with the sheave The spacer located on the fore part of SECURPULLEY allows unlocking the bra...

Page 8: ...r hoisting or retaining the load involves a push on the reeving roller 6 that in turns involves a rotation of the side plates and the opening of the brake Closing of the brake the wedge brake is in contact with its upper surface with a bush assembled on an axle which involves the self locking action of the lower part of the wedge onto the rope This happens whenever the operator s force on the rope...

Page 9: ...ase N 4 regulation positions are foreseen for the counterweight related to the working height and to the rope diameter The table shows the suggested settings for the counterweight according to the tests results The specified conditions could not be the best ones when operating with wet rope or with a rope having different density always proceed to a functional test before the use INDICATIVE TABLE ...

Page 10: ...Y by a cantilever pipe involves a bending stress in the clamp and in the supporting pipes with heavy loads in free fall the braking efforts can make such stresses become considerable Do not overcome the cantilever dimensions indicated by figure 2 not to charge excessively the supports Frequently check the tightening of the clamp screws Figure 2 cantilever support for per SECURPULLEY c slewing supp...

Page 11: ...ing operating with SECURPULLEY check that the supporting pipe is correctly installed and the scaffold on which the support is fixed is strong and stiff enough Figure 3 scheme of correct and incorrect arrangements for the support of SECURPULLEY INSTRUCTION MANUAL FOR SAFETY SHEAVE pag 8 by TORNOMECCANICA s r l A The pipe on which he support for SECURPULLEY is fixed is free at the top and can swing ...

Page 12: ...weight is corresponding to the actual operating conditions as previously described Always lift loads adequate to the physical capacity of the operator also related to the lifting height Put the due attention to the fastening of the load onto the rope danger of load fall For the best safety of the operator at ground he must stand during the loads handling as far as possible from the vertical below ...

Page 13: ...t the rope in the sheave according to figure 4 the rope must pass between the pulley and the counterweight at the ìload sideî and over the roller at the ìpulling ropeî side The rope could be inserted from both sides of the sheave but usually a knot is foreseen on it for locking purposes during the lowering of the empty rope on the load lifting side In this case the rope must be inserted from the c...

Page 14: ...n three pins in the three holes existing in one of the two knobs located at the sides of the counterweight at the external of the two side plates Keep with one hand the key and with the other hand the opposite knob Rotate counterclockwise until the unlocking of the counterweight is achieved and it can slide along the side plates Position the counterweight in the selected position see table at para...

Page 15: ...ush do as follows For substitute the bush do as follows by two 17 mm spanners unscrew the nut from the screw that keeps the bush in place take off the screw and make free the bush the bronze bush on which the bush is assembled and the two side spacers insert the new wedge pressing bush onto the bronze bush and assemble it on the screw with the two spacers Pay attention to the position of the wedge...

Page 16: ...ck the sheave as described in chapter 7 before start working Make also the following functional checks Check the free rotation of the sleeve onto the pipe Check the free rotation of the sheave Check the free rotation of the reeving roller Check the free movement of the two side plates Check the free rotation of the supporting bracket onto the sleeve Check the free rotation of the wedge pressing bu...

Page 17: ...ds the desired level As the force on the rope is decreased as well suddenly released the loads starts a small descent and immediately afterwards the brake is automatically engaged and locks the rope The brake is operated also when the rope is taken away from the vertical such in a way that the lifting rope becomes inclined and the action of the rope onto the reeving roller is less and less effecti...

Page 18: ...king the load towards the landing surface He then takes the load and pulls the rope slightly and progressively towards him thus unlocking the brake the loads will come down to the floor Pay attention not to make the load to descent suddenly danger of feet crushing The operator at the floor after having the load resting down makes the rope becoming a little slack unties the load and the provides th...

Page 19: ...ide towards him orienting SECURPULLEY at an angle of about 30 with the supporting pipe During this pulling action the rope comes in contact with the counterweight spacer and the brake is released In this way the ropes comes to ground As the length and thus the weight of the rope fall going down increases the descent of the rope becomes easier and quicker Figure 5 scheme in plant of SECURPULLEY ori...

Page 20: ...se the brake for slow down of loads or the rope and the brake itself will be damaged The operator at the floor fastens the load to be lowered the operator at ground slightly pulls the rope and lifts the load The brake will keep the load steady The operator at the floor in the meanwhile helps the load to be pulled out If you are working with a rotating support TORNOMECCANICA the operator at the flo...

Page 21: ...nd the supporting pipe Check the correct position of the bal ancing counterweight Check that the proper wedge brake pulling bush is assembled related to the used rope diameter Check the wear of the wedge brake substitute it if necessary Check the diameter and the wear condition of the rope Do not operate with lifting heights exceeding the recommended ones Check that no parts or dust has entered in...

Page 22: ... small parts with a compressed air stream or if necessary with thin steel wires or tools If taking off parts penetrated inside is difficult do not use force not to damage internal parts If the disassembly required is not included in the ones foreseen in this chapter ask for After Sales Service help Store SECURPULLEY in a dry place protected from dust and polluting agents Execute the periodical che...

Page 23: ...tate of the wedge pressing bush if the external surface is damaged a new bush must be used Check the state of the pulley rim if it is worn or damaged it must be substituted Check the state of the reeving roller if its surface is worn or damaged it must be substituted THREE MONTHLY Check the state of the bearings make rotate the pulley the supporting bracket the reeving roller Check that the rotati...

Page 24: ...w the screws that keep in position the red plastic repairs positioned over the roller axle by two 17 mm wrenches unscrew the nut from the screw that keeps the roller in position take out the screw and clear the roller substitute the roller assemble in its position and fasten the nut re assemble the red repairs 8 3 3 Substitution of the spacers counterweight side and reeving roller side By two 6 mm...

Page 25: ...ic cover for axles RS 16 10 WARRANTY SECURPULLEY is warranted for 12 months from the purchasing date For the starting and validity of the warranty reference is made to the date on the invoice or receipt that must thus be kept and shown in case of request for repair under warranty The warranty includes the free of charge repair of SECURPULLEY at TORNOMECCANICA or After Sales Centres The delivery ex...

Page 26: ...TORNOMECCANICA s r l Genova V Renata Bianchi 67N Tel 39 010 6509404 Fax 39 010 6509405 http www securpulley com info securpulley com ...

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