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2025-01-27 11:45本頁(yè)面
【正文】 are hydraulically pressed onto the mix at a frequency of 68 Hz (approx.) and a maximum pressure of 130 bar) P1 = Screed equipped with 1 Pressure Bar P2 = Screed equipped with 2 Pressure Bar Extending Screeds and Bolton Extensions For all VOGELE screeds, bolton extensions are available. The VOGELE system of bolton extensions allows to easily and sturdily build up screeds to any pave width desired. Even when paving in large widths, VOGELE screeds work with highest precision and achieve superb degrees of uniform density right up to the pavement edges. When fitting bolton extensions, care must be taken to ensure that the bottom edge of the screed plate is flush with the adjacent units, otherwise a step may be produced in the pavement or the screed planning angle may change. During the paving process, this can have a negative effect on prepaction, surface structure and floating behaviour of the screed. SetUp of the Extending Screed 1. Position both extending units in place so that the screed plate of the basic unit and the screed plates of the extending units are roughly level. 2. Slacken the chains connecting the spindles on the extending unit so that each spindle can be adjusted independently. 3. Carefully lower the screed onto the extending units. Timber should be placed under the middle of the two extending units. 4. Now adjust the screed planning angle via the tow point rams so that the screed plate rests on the timber. 5. Remove the locking screw from the threaded bush on all spindles. 6. Adjust all threaded bushes. 7. Refit the locking screws. 8. Raise the screed and secure it so that it cannot sink. 9. Lay a ruler along the inner and outer spindle pairs and then adjust the height of the extending unit via the front and rear spindles with the aid of a special wrench, so that the screed plate of the basic unit is level with the trailing edge of the extending unit. Now adjust the planning angle of the extending unit via the front spindle. 10. Reconnect the spindle pairs with the chains. 11. Raise the frame of the extending unit by approx. 4mm so that it roughly corresponds to the planning angle of the screed. 12. During the first onsite job, the height of the extending units must be corrected until a longitudinal step is no longer visible. FixedWidth Screeds Compacting Systems Installed in FixedWidth Screeds TV = Tamper and Vibrators Installed in: SB 250 SB 300 Remended for: All conventional mixes. Materials which are easy to pact or thinner pavement layers. Jobs where paving can be done in a largely constant width. Large radii. TP2 = Tamper and 2 Pressure Bars Installed in: SB 250 (and Hydraulic Bolton Extensions) SB 300 (and Hydraulic Bolton Extensions) Remended for: All conventional mixes. A screed in TP2 version achieves a high prepaction even of thick pavement layers. Mixes which are difficult to pact on account of their grain shape and consistency. Jobs where paving can be done in a largely constant width. Large radii. Less effort required for subsequent paction by rolling. TP1 = Tamper and 1 Pressure Bar Installed in: SB 250 (and Hydraulic Bolton Extensions) SB 300 (and Hydraulic Bolton Extensions) Remended for: All conventional mixes. Prepaction by a screed in TP1 version is higher than by a TV screed, but lower than by a screed in TP2 version. Jobs where paving can be done in a largely constant width. Large radii. Less effort required for subsequent paction by rolling. TVP2 = Tamper, Vibrators and 2 Pressure Bars Installed in: SB 250 SB 300 SB 250 B Remended for: Jobs where pavin
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