| 摘要 |
A double tamping bar vibratory screed is disclosed for use with a lay-down machine for laying a roadway. The screed consists of a main body portion having a strike-off plate on its leading edge which is followed by two tamping bars having independent eccentric shafts. These tamping bars are in turn followed by a vibrating plate which together perform the necessary compaction and provide a smooth, even surface with a variety of materials. The tamping bars are resiliently designed with a slightly rearward angle of attack and have horizontal material engagement faces which contact the material to be compacted and provide the desired result.
|
