Abstract:
The invention provides a pit pump having a submersible hydraulic drive motor (3), a pump (28), and a bearing block assembly (7). The pump (28) has a body (20), a fluid inlet in the body, a fluid outlet (29) in the body, and an impeller (18) operatively positioned in the body, whereby fluid can be pumped between the fluid inlet and fluid outlet (29). The bearing block assembly (7) operatively connects the hydraulic drive motor (3) to the impeller (18) of the pump (28), whereby the submersible hydraulic drive motor (3) is spaced apart from the pump (28). The bearing block assembly (7) preferably includes a housing (7a) and a drive shaft (7b) operatively positioned for rotational movement within the housing, whereby rotational movement can be transferred from the hydraulic drive motor (3) to the impeller (18) of the pump (28). The bearing block assembly (7) preferably has at least one grease nipple (9) and at least one bleeder nipple (8) for maintaining grease lubrication within the bearing block assembly (7). Furthermore, the bearing block assembly (7) is preferably lubricated with an extreme-pressure, water-resistant, and high-temperature grease.
Abstract:
An improved pipeline padding apparatus (10) includes (18) a separator for separating fine material (26) out of spoil (24) which is piled along side an excavation (22), an elevator (16) for transporting spoil to the separator, and a pair of spaced-apart guide projections (12) for guiding spoil into the elevator. The spaced-apart guide projections (12) form a substantially open bottom extending the width of the elevator (16) between the guide projections (12). A conveyor (20) is provided to transport the separated fine portion (26) of the spoil (24) back into the excavation (22), thereby padding the pipeline. The separator (18) , the elevator (16), the guide projections (12), and the vehicle (10) are all mounted on a support vehicle (28). According to one aspect of the invention, one or more rotary feeder assemblies is mounted to the guide projections (12) for assisting in moving spoil (24) through toward the elevator (18). The rotary feeder assemblies (13) have a low profile so that spoil material and rocks do not become stuck as they move toward the elevator. In another aspect of the invention, the motor of the tracked support vehicle (28) is mounted above and forward of the elevator (16), which helps reduce the amount of dust that the motor is exposed to during operation. According to another aspect of the invention, the guide projections (12) may be configured to allow excess spoil to flow underneath in such a manner as to smooth out a path for the tracks (128) of the support vehicle (28).
Abstract:
A padding machine for moving along a side of a ditch, scooping up excavated material from the side of the ditch, and sifting the excavated material into padding material for filling in the ditch comprises a frame comprising side frame members and frame rails spaced apart from the side frame members. A screening belt is driven around pulleys supported by the frame. The screening belt comprises a screen for collecting and conveying the excavated material upwardly. The screen comprises apertures for sifting the excavated material into padding material by permitting the padding material to fall through the apertures of the screen. The screen runs over the frame rails which support the screen. A discharge conveyor is mounted to the frame beneath an upper run of the screening belt. The discharge conveyor receives the padding material passing through the screen and discharges the padding material into the ditch.
Abstract:
An improved pipeline padding apparatus (10) includes (18) a separator for separating fine material (26) out of spoil (24) which is piled along side an excavation (22), an elevator (16) for transporting spoil to the separator, and a pair of spaced-apart guide projections (12) for guiding spoil into the elevator. The spaced-apart guide projections (12) form a substantially open bottom extending the width of the elevator (16) between the guide projections (12). A conveyor (20) is provided to transport the separated fine portion (26) of the spoil (24) back into the excavation (22), thereby padding the pipeline. The separator (18) , the elevator (16), the guide projections (12), and the vehicle (10) are all mounted on a support vehicle (28). According to one aspect of the invention, one or more rotary feeder assemblies is mounted to the guide projections (12) for assisting in moving spoil (24) through toward the elevator (18). The rotary feeder assemblies (13) have a low profile so that spoil material and rocks do not become stuck as they move toward the elevator. In another aspect of the invention, the motor of the tracked support vehicle (28) is mounted above and forward of the elevator (16), which helps reduce the amount of dust that the motor is exposed to during operation. According to another aspect of the invention, the guide projections (12) may be configured to allow excess spoil to flow underneath in such a manner as to smooth out a path for the tracks (128) of the support vehicle (28).