摘要:
The present disclosure presents an construction machine having a sand shield comprising: at least one drum mounted to a frame at a side thereof; a drum drive motor mounted to the frame and configured to transmit a driving force to rotate the drum; a stationary shield fixed to surround the outer surface of the drum drive motor; and a rotary shield configured to surround one side of the drum drive plate mounted on the side of the drum and cover a part of the stationary shield so as to receive the driving force from the drum drive motor to rotate the drum, whereby the rotary shield is rotated together with the drum drive plate when the drum drive plate is rotated.
摘要:
A method of reducing moisture content of soil is provided. The method includes placing a device having a flexible, water-permeable membrane defining an enclosure for receiving a water swellable material, and a water swellable material received within the enclosure in soil. The method may be used in soil strengthening, construction, and works underground such as underground excavation, mining, and tunneling.
摘要:
Ein selbstfahrendes Baugerät, insbesondere Bodenverdichter, umfasst ein turbogeladenes Dieselantriebsaggregat (20) mit einer ersten Kühleranordnung (38) zum Kühlen von Ladeluft und einer zweiten Kühleranordnung (40) zum Kühlen von Kühlflüssigkeit oder/und Hydrauliköl, wobei der ersten Kühleranordnung (38) ein erstes Kühlergebläse (46) zugeordnet ist und der zweiten Kühleranordnung (40) ein zweites Kühlergebläse (48) zugeordnet ist und das erste Kühlergebläse (46) und das zweite Kühlergebläse (48) voneinander im Wesentlichen unabhängig betreibbar sind.
摘要:
A tamper device includes a shaft for driving a tamper head. A tamper head is attached to the end of the shaft for tamping a lift of aggregate in a cavity formed in a ground surface. A shield extends upwardly a predetermined height from the tamper head an amount sufficient to prevent sidewalls of the cavity from failing and collapsing. Methods of constructing aggregate columns with thicker lifts are also disclosed.
摘要:
A method for soft ground improvement, adopting control means based on information thereof, includes such steps: firstly, proving up the distribution of the soil layers in the field of the ground to be treated with small anger drill; then inserting vacuum pipes arrayed in a matrix to the different soil layers according to the water content and the infitration coefficient of the different soil layers, vacuumizing subsequently for drainage, extracting part of vacuum pipes, and alternating with compacting each layer synchronously with diverse energy for several turns to treat the soft ground. The compaction process is carried out through dynamicconsolidation or vibration with different energy in different turns. The method has advantages of reducing construction period and eliminating differential settlements under construction.
摘要:
A method of operating a compactor machine (10) includes determining a value indicative of a compaction state of a region of work material after each of a plurality of compactor passes, and triggering a compaction fault condition if the incipient compaction response defined by the valuesl satisfies aberrant compaction criteria. A work machine (10) includes an electronic controller (20) configured to trigger a compaction fault condition responsively to sensor input signals indicative that aberrant compaction criteria are satisfied by an incipient compaction response of a work material.
摘要:
In one aspect, the invention concerns a method of compacting soil which involves the steps of repeatedly raising a mass (28) above the soil surface and then dropping it to apply impacts to the soil surface. Indications of one or more instantaneous properties of the soil are periodically derived from the impacts on the soil surface. In accordance with these indications, the number of subsequent impacts and/or the energy imparted to the soil at each impact and/or the frequency of the impacts is or are controlled automatically by a controller typically in the form of a PLC in order to achieve in the soil one or more predetermined properties. In another aspect the invention concerns a soil compaction apparatus (10) that includes a drop mass soil compactor having a mass (28) and means (30) for repeatedly linearly raising the mass above the soil surface and then dropping it to apply impacts to the soil surface. The apparatus also has a monitoring means (42) arranged to provide periodic indications of one or more instantaneous properties of the soil; and the abovementioned control means (44). Still further invention concerns a method and apparatus for measuring instantaneous soil properties on a site.
摘要:
A system (10) for validating compaction of work material (Z) at a work site is provided including a compaction machine (11). A sensor (32) and a location sensor (46) are associated with the compaction machine (11). A controller (40) is configured to receive compaction data from the sensor (32) and position data from the location sensor (46) and to determine a structural parameter of the work material (Z) based on the compaction data and physical properties of the compaction machine (11). The controller (40) associates the structural parameter of the work material with the position data. The controller (40) saves structural parameters and associated position data for different locations in the work site and for different layers of work material in the work site and compares the saved structural parameters and associated position data with predetermined structural design criteria for corresponding locations and layers in the work site.