摊铺机熨平板中英文对照外文翻译文献.docx

1、摊铺机熨平板中英文对照外文翻译文献 中英文资料翻译Paver screed1.1 Function Fulfilled by the ScreedThe screed, the road pavers working tool, fulfils the function of uniformly compacting the paving material across the entire pave width and producing a close-textured and level surface. The screeds compacting systems shall pre-

2、compact the mix to the greatest possible extent. This is to minimize the influence of layer thickness upon the amount of subsequent compaction by rolling when bringing about the pavements final density.For pre-compaction, different compacting systems are available:T = Tamper (an eccentric shaft caus

3、es the tamper bar to move up and down)V = Vibrators (vibrations are generated by an eccentric shaft acting on the screed plates at right angles to the direction of motion)P = Pressure Bar(s) (the pressure bar(s) are hydraulically pressed onto the mix at a frequency of 68 Hz (approx.) and a maximum p

4、ressure of 130 bar)P1 = Screed equipped with 1 Pressure BarP2 = Screed equipped with 2 Pressure Bar1.2 Extending Screeds and Bolt-on ExtensionsFor all VOGELE screeds, bolt-on extensions are available. The VOGELE system of bolt-on extensions allows to easily and sturdily build up screeds to any pave

5、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 bolt-on extensions, care must be taken to ensure that the bottom edge of the screed plate is flush with the adjacent

6、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 pre-compaction, surface structure and floating behaviour of the screed.1.3 Set-Up of the Extending Screed1. Position both extending units in

7、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

8、 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

9、 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 ext

10、ending 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 on-site job, the hei

11、ght of the extending units must be corrected until a longitudinal step is no longer visible.1.4 Fixed-Width Screeds1.4.1 Compacting Systems Installed in Fixed-Width Screeds TV = Tamper and VibratorsInstalled in:- SB 250 - SB 300Recommended for:- All conventional mixes.- Materials which are easy to c

12、ompact or thinner pavement layers.- Jobs where paving can be done in a largely constant width.- Large radii. TP2 = Tamper and 2 Pressure BarsInstalled in:- SB 250 (and Hydraulic Bolt-on Extensions)- SB 300 (and Hydraulic Bolt-on Extensions)Recommended for:- All conventional mixes.- A screed in TP2 v

13、ersion achieves a high pre-compaction even of thick pavement layers.- Mixes which are difficult to compact 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 compaction by rolling. TP1 = Tamp

14、er and 1 Pressure BarInstalled in:- SB 250 (and Hydraulic Bolt-on Extensions)- SB 300 (and Hydraulic Bolt-on Extensions) Recommended for:- All conventional mixes.- Pre-compaction 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 c

15、an be done in a largely constant width.- Large radii.- Less effort required for subsequent compaction by rolling. TVP2 = Tamper, Vibrators and 2 Pressure BarsInstalled in:- SB 250 - SB 300 - SB 250 BRecommended for:- Jobs where paving can be done in a largely constant pave width.- Large radii.- SB 2

16、50, SB 300: All conventional mixes.- SB 250 B: For paving PCC? as this type of job does not include subsequent compaction by rolling.1.4.2 Fixed-Width Screeds and Bolt-on ExtensionsAs a general rule, bolt-on extensions should be fitted symmetrically on both sides of the screed, wherever possible. Th

17、e advantage of a Fixed-Width Screed is a deeper screed plate of 500mm compared to a screed plate of 250mm found on Extending Screeds. This has a positive effect upon the screeds floating behaviour.Moreover, the leading edge of the Fixed-Width Screed forms a single line over the entire pave width and

18、 different planning angles do not leave marks in the pavement. Fixed-Width Screeds are capable of handling considerably larger pave widths than Extending Screeds, albeit with restrictions as regards the screeds variability. As a result, Fixed-Width Screeds are particularly suited to paving long sect

19、ions with a large, unchanging pave width.1.4.3 Building Up a Fixed-Width Screed with Bolt-on ExtensionsBolt-on extensions are fitted to enlarge the screeds width. The trailing edges of the screed plates shall be flush across the entire pave width. The leading edges of the screed plates should be set

20、 higher towards the outside by roughly 0.5mm.In order to prevent the bolt-on extensions from bending towards the rear as a result of the pressure exerted by the mix, horizontal braces must be fitted.Horizontal braces are to be fitted in such a way that the trailing edges of the screed plates are flu

21、sh.To compensate the uplift at the outer edges of the screed, there should be a light sag of the screed when raised. The magnitude of this sag depends on the pave width. The sag can be adjusted by way of the braces over the screeds basic unit.1.5 Set-Up of TamperThe tamper shall be set to an identic

22、al stroke length across the entire pave width. The setting can be changed by simply turning the eccentric bush on the shaft driving the tamper bar. The driving shaft is accessible from behind, so that this can easily be done between job site sections. Adjusting the lower reversal point of the tamper

23、 bar, however, takes more time. First, the tamper shields need demounting. Then remove the screws on all shaft brackets. After loosening the locking nut (2), the tamper bar can be adjusted via bolt (1). The height to be set depends on the tamper stroke selected.1.6 Set-Up of Tamper ShieldThe tamper

24、(3) must be set so that it rests on the wear strip (1) across the full width. Then adjust the spring steel bar (2) on the tamper shield by means of screw (4) from the rear of the screed until a gap of 0.5 - 1mm is obtained between tamper bar and the spring steel bar. Release screws (6) and fit vario

25、us small shims (5) to align the tamper shield. With the tamper shield correctly aligned, the spring steel bar (2) is at least parallel with the tamper or preferably inclined slightly to the front. Check the clearance between tamper and spring steel bar and correct, if necessary.Tip!At a stroke lengt

26、h of 2mm, the tamper bar should be flush with the screed plate(check with your hand).1.7 Set-Up of Pressure Bar(s)1. Unscrew the nut (2) with anti-twist device (3) on the hydraulic ram (1) for the pressure bar.2. Turn the hydraulic ram (1) to adjust the height of the pressure bar. The clearance (7)

27、between pressure bar and bottom edge of the screed plate should be at least 4mm.3. Check that the hydraulic ram for the pressure bar makes contact with metal plate (5) when retracted.4. Set pre-tension of spring (6) to 5.5mm via nut (4) to yield a distance (8) of 59.5mm.5. Resecure the hydraulic ram

28、 (3) for the pressure bar.1.8 Bevel IronsBevel irons shape and compact the edges of the pavement. They are available with a bevel edge of 45 and 60. Their size depends on the thickness of the layer to be paved.A heating rod can be installed as an option to improve the sliding properties of the bevel

29、 iron.1.9 Function Check of Screed HeatingAll screed components in contact with the hot mix should be heated to approx. 90 C before starting work. It is recommended to protect the screed against excessive loss of heat to the surroundings so that the heating power can be utilized effectively, for ins

30、tance by putting down the screed, preferably on hot mix. Asphalt may stick to the tamper bar, screed plates or pressure bar(s) if the screed temperature is too low. This can lead to the formation of strips and an irregular surface texture. The floating behaviour of the screed may vary before it reac

31、hes its operating temperature, with the result that layer thickness may also vary and deviate from the desired one. For the “dash 2“ machines, a monitoring unit for screed heating is available as an optional extra. This feature monitors each single heating rod for proper function and indicates any f

32、ault without delay.Should one of the green indicator lights extinguish over a prolonged period of time, then the reason may be:n Poor insulationn Asymmetrical power consumptionn Generator temperature too highTip!Directly after switching on screed heating, correct operation of the heating rods can be checked by cautiously touching the tamper bar, screed plates and pressure bar(s).Advantage：A failure of heating rods is detected immediately. New parts can be procured without