Abstract: A hydraulic vibration generation device or hydraulic motor is provided. The device includes a manifold having an inner volume with a pressure chamber extending into the inner volume, a fluid inlet orifice and a fluid outlet orifice. The device further includes a vibration generating member having a grooved drive and an off-center weight and retaining plates. The inner volume receives the vibration generating member within the inner volume. The vibration generating member rotates and generates vibration in response to hydraulic fluid flowing into the manifold through the inlet orifice and directed through the pressure chamber, relieves pressure upon exiting the pressure chamber and out of the manifold through the outlet orifice. Also provided a hydraulic motor with a same manifold and pressure chamber, but with a power generating member having the same groove drive without and off-center weight. Rotation of the power generating member generates power.

Abstract: A device includes a cylinder having a cavity adapted to hold a concrete test cylinder, an accelerometer adapted to detect motion data, and a second sensor adapted to obtain measurements of a characteristic of the concrete during a predetermined time period. For example, the second sensor may be a temperature sensor. The device also includes a processor adapted to receive motion data from the accelerometer, determine that the device has moved during the predetermined time period, based on the motion data, and determine that the measurements obtained by the second sensor are invalid, based on the determination that the concrete test cylinder has been moved during the predetermined time period.

Abstract: The invention relates to a vibrator device for a vibratory compacting machine, said device comprising: a tubular body extending longitudinally and having a bottom end; at least one first hydraulic motor disposed in the tubular body and comprising a rotor and a stator; an eccentric member arranged inside the tubular body between the bottom end and the first hydraulic motor, said eccentric member being adapted to be rotated by the rotor of the first hydraulic motor so as to generate vibration. The invention is characterized in that the stator of the first hydraulic motor is constituted by the tubular body.

Abstract: Vibrating apparatus (50) for compacting concrete that includes a vibrating head (1) with an electric motor (11) operating a vibration generating device (10), a current conductor wiring (12a, 12b, 12c) with a plug (13) for connecting said electric motor (11) to a electric supply network (27), a frequency converter (30) for converting the frequency of the current supplied by the electric supply network to another different frequency, and a control unit (2) having a switch (14), a plurality of sensors (28) for detecting different operating parameters of the vibrating apparatus, a programmable electronic circuit (15) for monitoring said parameters from signals supplied by the sensors, a memory (16) for storing representative data of the parameters and a communications management device (17) whereby a user accesses the data stored in the memory (16).

Abstract: In a jolting device (1) for a construction machine, particularly for a slip-form paver, comprising a housing (18), a vibration generator (19) arranged in the housing (18), and a fastening means (10) including at least one coil spring (8) having a plurality of spring windings, with said fastening means (10) being operative for fastening the housing (18) to the construction machine, it is provided that the interspaces between the spring windings of said at least one coil spring (8) are closed or at least partially filled towards the interior by an elastic element (22).

Abstract: In a jolting device (1) for a construction machine, particularly for a slip-form paver, comprising a housing (18), a vibration generator (19) arranged in the housing (18), and a fastening means (10) including at least one coil spring (8) having a plurality of spring windings, with said fastening means (10) being operative for fastening the housing (18) to the construction machine, it is provided that the interspaces between the spring windings of said at least one coil spring (8) are closed or at least partially filled towards the interior by an elastic element (22).

Abstract: An apparatus for regulating a flow of pavement rejuvenation materials for deposit on a roadway is disclosed in one aspect of the invention as including a first channel is supported by a pavement recycling machine and is in communication with a supply of pavement rejuvenation materials; a second channel slideably coupled to the first channel, the pavement rejuvenation materials adapted to flow through the first and second channels; and a hardened tip coupled to the second channel. The apparatus may also have a seat coupled to one of the channels; and a blocking element coupled to the other of the channels. Upon sliding the first channel with respect to the second channel, the blocking element contacts the seat, thereby impeding the flow of pavement rejuvenation materials flowing through the channels.

Abstract: An apparatus for use in shearing paving material applied to a surface is provided. This apparatus includes a blade for shearing the asphalt mixture to a desired thickness, cylinders for raising and lowering the blade in response to elevational changes in the surface, at least one signal generator associated with each cylinder and adapted to produce a signal indicative of the elevation of the surface, and at least one signal receiver associated with each signal generator. This blade apparatus is coupled with a prime mover. The receiver is operable to activate the cylinders in response to a signal received from the generator. The blade is raised and lowered as the elevation of the surface changes in response to signals emanating from the generator allowing surface level variations to be evened out while paving.

Abstract: A wheeled strike-off apparatus is movable over a surface of uncured concrete or subgrade materials and is operable to establish a desired grade of the uncured concrete surface or subgrade surface. The apparatus includes a wheeled support and a plow assembly. The wheeled support may have a front frame portion and a pair of front wheels rotatably mounted at the front frame portion, and may have a rear frame portion and a pair of rear wheels rotatably mounted at the rear frame portion. The plow assembly may be adjustably mounted to the front frame portion and may be vertically adjustable relative to the frame portion via an actuator. The plow assembly includes at least one plow member for engaging and establishing the desired grade.

Abstract: A vibratory screed apparatus includes a vibrator, a screed, and a coupler for coupling the vibrator to the screed. The vibratory screed apparatus may be provided as a concrete-finishing kit which is capable of being assembled and disassembled in the field. A number of other concrete-finishing kits are also disclosed.

Abstract: A drag box for use in applying cold mix asphalt paving material to a surface includes a pugmill for distributing the cold mix over the surface, a strike blade for shearing the asphalt mixture to a desired thickness, cylinders for raising and lowering the strike blade in response to elevational changes in the surface, at least one signal generator associated with each cylinder and adapted to produce a signal indicative of the elevation of the surface, and at least one signal receiver associated with each signal generator. The drag box is pulled behind a prime mover but preferably is not rigidly coupled with the prime mover. The blade is raised and lowered in response to signals emanating from the generator as the elevation of the surface changes, allowing surface level variations to be evened out while paving.

Abstract: A concrete paving system of a variety employing an array of vibrators which consolidate dispersed concrete over a roadbed or the like as the concrete is introduced to the mouth of a slipform pan or mold. The rate of vibration of these vibrators is monitored utilizing an accelerometer in conjunction with a vibration conversion network treating the acceleration signals to derive vibration rate data. The vibration rate data then is used with a monitor and control function employing a user inputted RPM and ground speed based algorithm to derive an RPM error output which is summed with the then existing control current applied to the solenoid function of a proportional control valve to adjust the flow of hydraulic fluid from a constant fluid flow source to a hydraulic motor within a vibrator. A controller with the system provides for the development of upper limit and lower threshold alarm limits which may be displayed along with audible warnings.

Abstract: A vibration system that fits on top of a conventional truss with minimal alteration. The system comprises a propulsion assembly powering a vibration assembly. The propulsion assembly comprises two parallel rails forming a lateral path between truss ends and supporting a mobile carriage. Each rail comprises abutting segments coextensively surmounting the truss. Each segment attaches at respective truss cross-beams to define a continuous runway for carriage movement. Each segment also defines a channel for a chain rack anchored at opposite truss ends. The carriage comprises an undercarriage supporting an offset platform. The undercarriage comprises a rail-spanning frame with supporting runway tracking wheels. A motor propels the carriage by turning an axle with terminal pinions entrained about the rack. The offset counterbalances the vibration assembly to reduce torsion. A coupling hitch protrudes from the platform opposite the offset to support the vibration assembly.

Abstract: A concrete paving system of a variety employing an array of vibrators which consolidate dispersed concrete over a roadbed or the like as the concrete is introduced to the mouth of a slipform pan or mold. The rate of vibration of these vibrators is monitored utilizing an accelerometer in conjunction with a vibration conversion network treating the acceleration signals to deriving vibration rate data which is published for each vibrator at a display. A controller with the system provides for the development of upper limit and lower threshold alarm limits which may be displayed along with audible warnings. Such vibration transducer based monitoring system also may be used for rotational component performance monitoring as well as in conjunction with probes located within distributed concrete in the vicinity of the array of consolidation vibrators to evaluate the performance of the latter. The monitoring system also is employable with the vibratory components of dowel bar insertion assemblies.

Abstract: A telescoping auger shaft is provided that distributes slurry material throughout a spreader box of variable width in a paving system. The telescoping auger shaft comprises a first shaft positioned coaxially with and engaging a second shaft such that the second shaft is operable to extend with respect to the first shaft while remaining engaged with the first shaft. The two shafts can form a combined shaft of variable length. The telescoping auger shaft further comprises two sections of auger flighting, one coupled to the first shaft and one coupled to the second shaft. The two sections of auger flighting are operable to distribute slurry material in a spreader box when the first shaft and the second shaft are rotated. The first shaft includes a guide portion. A guide element is coupled to second shaft and engages with the guide portion. When the second shaft is extended with respect to the first shaft, the guide element can cause the second shaft to rotate with respect to the first shaft.

Abstract: An internal vibrator comprises a vibrator pipe, attached a transverse pipe transversely to the vibrator pipe at a bottom end region thereof, a vibrator drive, and an imbalance driven by the vibrator drive, wherein the vibrator drive and the imbalance are disposed in the transverse pipe.

Abstract: A concrete vibrator apparatus is described for use in conjunction with a concrete finishing machine that is movable longitudinally along a roadway. The finishing machine includes a finishing unit engageable with the surface of the concrete and movable transversely across the roadway, a supporting frame mounted to and extending forwardly and outwardly from the movable finishing unit, and a vibrator assembly mounted to the supporting frame. The vibrator assembly includes first and second vibrator units, with each of the vibrator units being independently movable between a downwardly position wherein the vibrator unit extends into and below the surface of the concrete and an upwardly position wherein the vibrator unit is out of contact with the surface of the roadway. A control mechanism is described for controlling the selective movement of the vibrator units and the rate of vibration of the vibrator units.

Abstract: A vibrating tamping float for smoothing the top surface of freshly poured concrete, pushing coarse aggregates down into the concrete while allowing cream to surface, and reducing a formation of large air pockets in the concrete, includes a float body having a bottom surface and a pushing device for pushing coarse aggregates down into the concrete while allowing cream to surface. The pushing device includes a plurality of ribs mounted on the bottom surface of the float body. The ribs have a ramp on front and rear portions thereof for providing a smooth entrance into the concrete and pushing coarse aggregates downward as they are slid back and forth in the concrete. A vibrator is provided on the float body for vibrating the float body to reduce a formation of large air pockets in the concrete, to aid in pushing the coarse aggregates on the surface down into the concrete, and to aid in leveling-off and smoothing the top surface of the concrete.

Abstract: An aggregate material spreader which is suitable for spreading aggregate material especially concrete on driveways, roadways and other paved surfaces. Work is performed by a roller-skid assembly adequate for rolling on forms and also skidding on the ground. It may have a built-in vibrating system and screed plates to grade material off at a desired level. Because of the skid embodiment it is designed to slip form. Finally a gliding float moves over the surface smoothing out all wrinkles.Also an alternate embodiment exists with a hopper built above the spreader with a sloping top attached on at the rear of said hopper at a lower position for concrete to discharge through for a finished product.

Abstract: An apparatus provided with a hopper having a capacity substantially equal to the capacity of a supply truck for receiving asphalt-aggregate material. A transversely disposed screw auger is provided for remixing the asphalt-aggregate material in the hopper prior to its discharge. In one form of the invention, the apparatus forms part of a self-propelled storage vehicle which transfers the material from the supply truck to a conventional finishing machine.

Abstract: A revolving paddle mixer for re-mixing a hot asphalt mix deposited in the hopper of a road paving machine. The mixer takes the form of a plurality of paddles angularly positioned relative to each other and mounted on a revolving shaft adjacent to the conveyor for transporting the asphalt mix material to the rotating auger. The resultant re-mixture is more uniform and dense so that a smooth pavement is laid on the roadway.

Abstract: A concrete finishing machine includes two finishing cylinders with two augers mounted in line with the two cylinders, forward ends of the augers being suspended by a frame which is pivotally attached to the cylinder support frame and rearward ends of the augers being connected through flexible couplings to the output ends of the cylinder shafts, allowing adjustment in the angle of inclination of the auger support frame, pivoting the two augers relative to the plane of the cylinder shafts.

Abstract: A method and apparatus for leveling a batch of pulverulent constituents in making a vitreous cellular material. A screen structure having at least one substantially flat screen layer is impressed down into and through at least a portion of the batch of pulverulent constituents. The screen structure is vibrated horizontally in a circular orbital motion while impressing the screen structure down into and through at least a portion of the batch of pulverulent constituents.

Abstract: Apparatus for extruding a continuous concrete structure along a surface such as a curb and gutter. The apparatus includes an open bottom hopper for containing a supply of concrete mounted to a vehicle. An open bottom mold extends rearwardly from the open bottom of the hopper and causes the concrete flowing from the hopper onto the surface to be provided the proper cross-sectional shape as the vehicle moves along the surface. The lower leading face of the hopper is slanted rearwardly. Vibrators are immersed within the concrete overlying the open bottom of the hopper and in an area generally horizontal with and to the rear of the lower leading face of the hopper. The combination of the slanted lower leading face and the properly situated vibrator causes the apparatus to creep or walk forward so that very little if any motive power need be applied to the vehicle.

Abstract: A concrete vibrator machine movable longitudinally of a roadway, or the like, with a vibrator unit movable back and forth transversely of the roadway, with the vibrator mechanism thereof disposed in the concrete to be vibrated, and with the vibrator mechanism being raisable and lowerable relative to the concrete to be vibrated.