A “zero turn radius” batch cart for delivering loads of raw concrete mix over difficult and uneven construction job sites transports a tiltable, load-receptive hopper displaceable between load bearing and load discharging positions. The rigid chassis is supported by front, hydraulically powered drive wheel assemblies and a pair of rear caster wheels for steering effects. An internal combustion engine, with its own throttle control, drives a hydraulic pump that powers separate hydraulic motors and valves for operating the cart. The front-mounted drive wheel assemblies are independently, hydraulically driven and each can be rotated forwardly or rearwardly independently of the other. Quick and precise zero-turn radius steering movements will result when the front wheel assemblies rotate in different directions, in combination with the caster rear wheel assemblies that exhibit negative caster.
A battery-powered electric polisher for treating concrete has the operational form of a self-propelled riding trowel. A rigid frame mounts a pair of rotors that descend into contact with the concrete surface. Hydraulic tilting circuits for polisher steering control are activated with joysticks. An electrically driven hydraulic pump powers the tilting circuits. Each rotor drives a lower, circular drive ring comprising a plurality of spokes. Drive ring spokes are nested within rigid channels defined in a lower a support plate so that the latter is removable. A plurality of radially spaced-apart abrasion devices descend from the support plate into contact with the concrete surface.
B24B 7/18 - Machines ou dispositifs conçus pour une seule opération particulière pour meuler des revêtements de sol, des murs, des plafonds ou similaires
E04F 21/24 - Outillage pour travaux de finition des bâtiments pour la pose des revêtements de sols faits de produits préparés sur place, p. ex. outils à lisser
A dedicated concrete surface polisher comprises a frame and powered chassis substantially resembling a twin rotor riding trowel, equipped with a plurality of diamond polishing pucks, and mounting apparatus for maintaining flat puck contact with the lower concrete surface. Each rotor supports an intermediate drive plate driven by a hydraulic motor. The intermediate drive plate comprises a circular ring plate that is reinforced by a substantially rigid, winged drive collar. Each drive plate supports a plurality of radially spaced apart polishing rotors that project into contact with the concrete surface being treated. Each polishing rotor is secured to the ring plate. The polishing rotors support a plurality of radially spaced apart, downwardly projecting, diamond-equipped pucks that frictionally bear against the concrete surface for polishing and abrading in response to rotor rotation.
B24B 7/18 - Machines ou dispositifs conçus pour une seule opération particulière pour meuler des revêtements de sol, des murs, des plafonds ou similaires
B24B 47/12 - Entraînement ou transmission des machines ou dispositifs à meulerÉquipement à cet effet pour entraîner dans leur mouvement de rotation ou de va-et-vient les arbres porte-meules ou les arbres porte-pièces par une transmission mécanique ou par l'énergie électrique
An electrically powered, self-propelled cart for safely delivering heavy loads, such as concrete, within job sites with unlevel, irregular, or sloped terrain. A cargo bucket is tiltable over front drive wheels for transporting and dumping cargo. Electric drive motors associated with a transaxle propel wheels at a selectable speed in response to an electric control module. A steering column rotates in response to manually operated handle bars and activates a sensor to generate signals delivered to the control module for throttle adjustments. The sensor may be a linear potentiometer, a rotary differential transformer or a rotary encoder or shaft encoder measuring angular displacement. Extreme steering displacements will electrically reduce cart speed notwithstanding the previous speed setting chosen by the operator through the steering column.
B60W 30/188 - Commande des paramètres de puissance de la ligne de transmission, p. ex. déterminant la puissance requise
B60P 1/04 - Véhicules destinés principalement au transport des charges et modifiés pour faciliter le chargement, la fixation de la charge ou son déchargement avec un mouvement de basculement de l'élément supportant ou contenant la charge
A concrete finishing and forming machine adapted for rail trackbed deck construction accommodates various plinths and channels needed for light rail construction. The adjustably configurable machine comprises a rigid frame disposed above a deck by vertically upright, adjustable jack stands supported at their bottoms by wheeled, powered bogies adapted to traverse upon suitable rails on opposite sides of the deck. The jack-stands may be connected to supporting swing arms that extend from pivot sleeves enabling the jack stands to angularly swing out from the frame. A slidable carriage that is longitudinally displaceable within the frame supports at least one downwardly extending, vertically adjustable paving head having a tool that, when immersed within wet concrete and then horizontally displaced, strikes off elongated, smoothed channels resembling pathways upon the concrete. The heads are longitudinally displaceable relative to the carriage so they may be spaced apart such that plinth strips are concurrently formed between the channels.
An adaptor assembly for concrete finishing trowels that enables efficient polishing of concrete surfaces, and trowels equipped with said adaptors. A large, rigid, circular adaptor disk supports a plurality of spaced-apart polishing rotors that project into contact with the concrete surface being treated. Each polishing head is rotatably secured to the adaptor disk with a spindle assembly including suitable alignment bearings. The spindle assembly secures a rigid header beneath the adaptor disk that sandwiches a resilient, annular coupler between itself and a rigid driver plate beneath the coupler. Bosses on the coupler insure spacing and enable proper flexure. The driver plate removably mounts a resilient finishing ring, that supports a plurality of radially spaced apart, downwardly projecting, diamond-equipped pucks that frictionally bear against the concrete surface for abrading and polishing.
E04F 21/24 - Outillage pour travaux de finition des bâtiments pour la pose des revêtements de sols faits de produits préparés sur place, p. ex. outils à lisser
B24B 7/18 - Machines ou dispositifs conçus pour une seule opération particulière pour meuler des revêtements de sol, des murs, des plafonds ou similaires
9.
Roller tube concrete paver with retractable vibrator assembly
A roller tube concrete finishing machine includes retractable vibration gangs that can be selectively immersed within wet concrete and then retracted with parallelogram linkage. Spaced-apart, drive parallel rollers are journaled between frame ends for supporting and propelling the machine upon and between parallel form rails. A front roller provide a strike-off function. The vibration gangs are deployed by a retractable, parallelogram linkage that moves them forwardly and downwardly for operation, or which retracts the vibrators inwardly and upwardly relative to the frame. When the vibrators are retracted, the are withdrawn upwardly from the concrete and retracted rearwardly towards the machine front to reduce machine dimensions. Substantial retraction of the vibrators prevents subsequent interference with the rebar below. Vibrator retraction reduces overall machine dimensions for clearance and shipping purposes, with gang vibration arrays nested upwardly and inwardly proximate the front of the machine.
E01C 19/41 - Appareils ayant à la fois des outils de cylindrage et des outils de damage, de bourrage et de vibration
B06B 1/18 - Procédés ou appareils pour produire des vibrations mécaniques de fréquence infrasonore, sonore ou ultrasonore dans lesquels le vibrateur est déclenché par pression de fluide
A steerable, self-propelled cart for safely delivering heavy loads, such as concrete, within job sites with unlevel, irregular, or sloped terrain. A cargo bucket is tiltable over front drive wheels for transporting and dumping cargo. Hydraulic drive motors driven by a hydraulic pump propel rear wheels at a selectable speed. Steering handlebars rotate a steering column that turns the rear wheels. A throttle cable extending from the handlebars controls the throttle setting by pivoting a throttle lever mounted on the hydraulic pump. Limiting linkages extend from flanges on an anchor bracket secured to the steering column to a bridge on the throttle lever. As the steering column rotates, the limit linkages are wound partially about it, pivoting the throttle lever by pulling on the bridge, reducing pump speed. Heavy steering displacements will retract the throttle lever to reduce cart speed notwithstanding the previous speed setting chosen by the operator via the cable.
B62D 51/00 - Véhicules à moteurs caractérisés par le fait que le conducteur n'est pas assis
B60K 1/00 - Agencement ou montage des ensembles de propulsion électriques
B62B 5/00 - Accessoires ou détails spécialement adaptés aux voitures à bras
B60P 1/16 - Véhicules destinés principalement au transport des charges et modifiés pour faciliter le chargement, la fixation de la charge ou son déchargement avec un mouvement de basculement de l'élément supportant ou contenant la charge actionné par un fluide
B60P 3/16 - Véhicules adaptés pour transporter, porter ou comporter des charges ou des objets spéciaux pour porter du mélange de béton, p. ex. avec tambour tournant
B62B 3/08 - Voitures à bras ayant plus d'un essieu portant les roues servant au déplacementDispositifs de direction à cet effetAppareillage à cet effet comportant des réceptacles de chargement à bascule
B62B 3/00 - Voitures à bras ayant plus d'un essieu portant les roues servant au déplacementDispositifs de direction à cet effetAppareillage à cet effet
A high performance, multiple rotor, hydraulically driven riding trowel for finishing concrete includes a rigid trowel frame with two or more downwardly-projecting, bladed rotor assemblies that frictionally engage the concrete surface while supporting the trowel. The rotor assemblies are tilted with double acting hydraulic cylinders to effectuate steering and control. A seating arrangement supports an operator. A special ventilation path is provided to prevent overheating of the operator area. cooling compartment adjacent the seating region, Pathways are established by a cooling compartment enclosed by a shroud having at least one side ventilation orifice, a cooler assembly disposed within the cooling compartment; the cooler assembly comprising a grill, a plenum with a heat exchanger adjacent said grill and a fan adjacent said heat exchanger, the plenum having open sides and a closed bottom to prevent air pathways through the seating region.
E01C 19/42 - Machines pour donner aux revêtements fraîchement posés une finition sans inégalités autrement que par cylindrage, bourrage ou vibration
E04F 21/24 - Outillage pour travaux de finition des bâtiments pour la pose des revêtements de sols faits de produits préparés sur place, p. ex. outils à lisser
A dual rotor, manually steered riding trowel comprises powered, downwardly projecting rotors driven by reduction gear boxes that are tilted by parallel levers beneath the machine. A pair of vertical hand steering levers actuate the parallel levers to tilt the rotors. Each rotor may be swiveled in an arc parallel with the biaxial plane to produce pivoted fore and aft trowel movement. At least one rotor responds to lateral movements of one or both steering levers by tilting in an arc perpendicular to the biaxial plane, moving the trowel left or right. To emulate prior Allen trowels, lateral movements of one of the hand levers is mechanically disabled with a transformation link anchored to the frame. The transformation link may be disconnected from the frame and instead connected to the foot of the companion hand steering lever, allowing both steering levers to pivot laterally, resulting in a different steering “feel.”
High performance, multiple rotor, hydraulically driven riding trowels for finishing concrete have unloader valve circuitry for controlling hydraulic pressure. Each trowel has a rigid frame with two or more downwardly-projecting, bladed rotor assemblies that finish concrete. The rotor assemblies are tilted manually or hydraulically to effectuate steering and control. Blade pitch is controlled manually or hydraulically. The unloader valve system monitors drive pump pressure with a shuttle valve to derive an unloader pilot signal. A sequence valve responds to the unloader pilot signal to control a pressure valve that bypasses the normal foot control valve in an overpressure situation. The pressure control head signal normally applied to the hydraulic drive motor control heads is modified with a feedback signal to automatically control the associated pump swash plates. A gearbox may be disposed between the drive motors and rotors. Piston type and gear and vane type motors may power the rotors.
E01C 19/22 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement pour consolider ou finir une couche de matériaux n'ayant pas encore pris
15.
Hydraulic riding trowel with automatic load sensing system
A high performance, multiple rotor, hydraulically driven riding trowel for finishing concrete includes a rigid trowel frame with two or more downwardly-projecting, bladed rotor assemblies that frictionally engage the concrete surface. The rotor assemblies are tilted with double acting hydraulic cylinders to effectuate steering and control. Double acting hydraulic cylinders also control blade pitch. Hydraulic pressure to the rotors is monitored and controlled by an unloader valve system that monitors drive pump pressure with a shuttle valve to derive an unloader pilot signal. A sequence valve responds to the unloader pilot signal to control a pressure valve that bypasses the normal foot control valve in an overpressure situation. The pressure control head signal normally applied to the hydraulic drive motor control heads is modified with a feedback signal to automatically control the associated pump swash plates.
E01C 19/22 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement pour consolider ou finir une couche de matériaux n'ayant pas encore pris
concrete construction and finishing machines and accessories, namely, vibratory concrete screeds and strike-offs, floating screed and strike-offs, powered walk behind trowels, powered riding trowels, bridge deck finishers, power driven material spreaders, fine graders, topping spreaders, pneumatic concrete vibrators, mechanical concrete vibrators, concrete pavers, concrete saws, power sprayers for concrete and early entry concrete cutting saws
(1) Règle pour niveler le béton ou autres matériaux semblables, comprenant: une première portion servant à niveler, compacter et enlever le surplus de béton, et une deuxième portion permettant à la règle de flotter sur le béton frais et encore mou; et accessoires connexes.
Concrete Construction Equipment and Accessories-Namely, Vibratory Concrete Screeds and Parts Therefor, Material Spreaders, Auger Pavers, Power Trowels, Power Sprayers, Work Bridges, Concrete Vibrators and Parts Therefor
