2963 results about "Hydraulic ram" patented technology

A well service pump system supplies high pressure working fluid to a well. The pump system is a linear design which incorporates a diesel engine, a hydraulic drive gear box, open loop hydraulic Pumps, hydraulic ram cylinders, controls for the hydraulic system hydraulic cylinders, working fluid end cylinders and a coupling to connect the hydraulic cylinders and the working fluid ends. The engine powers the hydraulic system which, in turn, provides hydraulic fluid to operate the hydraulic ram cylinders. Each of the polished rods of the hydraulic ram cylinders is connected axially to a plunger rod end of a working fluid end cylinder. There is no crankshaft or automatic transmission required. The linear design allows for a longer plunger stroke length while still allowing highway transport on a truck or skid.

A well service pump system supplies high pressure working fluid to a well. The pump system is a linear design which incorporates an electric motor, a variable frequency drive (VFD), a pump drive, closed loop variable flow rate hydraulic pumps, hydraulic ram cylinders, working fluid end cylinders, and a coupling to connect the hydraulic ram cylinders and the working fluid end cylinders. The electric motor powers the hydraulic system which, in turn, provides hydraulic fluid to operate the hydraulic ram cylinders. The VFD is connected to a single one of the hydraulic pumps at a time and applies power to the connected pump, via the pump drive, to drive the connected pump from a cold start to an operating speed. The VFD is connected sequentially, one pump at a time, to each of the hydraulic pumps and disconnected from each pump once the pump reaches the operating speed. Once the pump reaches operating speed, the pump is connected to receive power directly to the electric motor.

A power-generating device located in or on the surface of the ocean for generating power utilizing the energy in ocean wave motion. The device is moored to the bow and stern at ˜45° to incoming ocean waves, and with a yawing capability to adjust to change in wave direction. The device delivers power to a shore grid via a submarine cable from a generator. A rotational driving torque to the generator is produced by two long counter-rotating drive tubes, which are held by bearings in the bow hull and the stern hull of the device. As an alternative, hydraulics may be employed for energy capture and power smoothing and used to provide the rotational torque through a hydraulic motor to drive a generator. The main body is partially submerged and has multiple pod floats connected to the structure by rocker arms with bearings through which the drive tubes pass or double-acting hydraulic rams between the arms and the main body, which capture energy through pod displacement and store it in accumulators. Rotary torque of the drive tubes is produced when the pods move up and down according to motion of the waves and is transmitted to the generator to generate power. In the hydraulic case, energy is stored in accumulators as pressure due to the double-acting hydraulic pistons pumping when the pods move up and down according to the motion of the waves. Hydraulic pressure drives a pump, which provides torque to the generator.

A sectional meter shut-off apparatus for use in preventing material such as seed or fertilizer from reaching a metering device, for the purpose of preventing double seeding or double fertilizing. The sectional meter shut-off apparatus comprises a plurality of gates capable of opening or closing access to a metering roller. The plurality of gates can be controlled through electric actuators, hydraulic cylinders or a shaft. These gates can individually be controlled through an electric switch connected to the cab of the vehicle and operated by the driver, or automatically controlled by a GPS/GNSS system capable of determining which areas of the field have been previously seeded or fertilized. Additionally, an agricultural implement is further provided, comprising a dual material dispensing apparatus, which incorporates a meter shut-off device, and hydraulic rams to raise ground-engaging soil openers when passing over soil that has been previously seeded/fertilized.

Method and apparatus for making snow by generating water spray from a triple array of multiple nozzle sub-boom branch-pipes transversely protruding from the upper end of a main boom of a pivotably adjustable snow making pipe tower. Three air jet streams, one for each branch pipe, are simultaneously discharged under high pressure into and sequentially through the throats of each associated multiple stack of water sprays issuing from each set of branch pipe nozzles to thereby form multiple spray plumes of atomized and seeded water all directed forwardly from the upper end of the tower pipe. The water pipe may be an elliptical aluminum extrusion with two interior air tubes respectively controllably feeding large and small diameter air jet arrays to thereby provide a range of air jet water spray interaction. The pipe tower may be pivotally raised and lowered by a block-and-tackle or chain fall type drive mechanism that may be recoupled to the tops of a lifting pole and tower pipe for bodily raising the entire tower pipe and its support pipe telescopically on a ground support pole. Spreader-supported guy wires may be used to brace the tower pipe and also provide an electrical deicing circuit. Air jet control, blow-out valving and water drain conduit arrangements are disclosed, and also universally adjustable ground support systems for the pipe tower, including an underground-fed combined telescopic hydraulic ram forming air and water conduits.

An integrated system for: complete waste compactor operational control; remote fullness monitoring; and, remote performance and maintenance diagnostics. Such diagnostic information is transferred wirelessly or otherwise to one or more recipients, so as to directly provide a critical warning in real time.

The waste compactor controller/monitor system allows for periodic real-time oil viscosity measurements of the hydraulic fluid to account for changes in such viscosity. The system adjusts the timing of the compactor stroke to permit more efficient operation and inhibit damage to the hydraulic ram and/or container during use.

A dual well pumping unit (12) has two hydraulic ram units (26), one for each well (preferably with each ram unit (26) having three hydraulic rams). Each hydraulic ram units is connected to first ram pump (18) and a second ram pump (20). The drive shaft (40) of the first ram pump (18) is coupled to the drive shaft (38) of the second ram pump (20) and to a rotor of a drive motor (16). The ram pump (18) and the ram pump (20) are preferably variable displacement piston pumps which are controlled by a microprocessor based controller (44), such that during the downstroke of the hydraulic ram (26) the ram pump (18) operates as an hydraulic motor powering the ram pump (20) and during the up stroke of the hydraulic ram (26) the ram pump (20) operates as a hydraulic motor to provide assist to the ram pump (18).

Excavator tool quick attachment device (1) is used to attach a tool to a dipper arm (2) of an excavator. Body member (52) has two receivers (12,14) for tool pins (11,15). Receiver (12) has a movable latch (3) powered by an hydraulic ram (20) for securing and releasing pin (11) and receiver (14) has a movable spring loaded lock (22) for securing and releasing pin (15). A control assembly (21) is connected between latch (3) and lock (22) but only operates to release lock (22) when the device (1) is inverted relative to a normal working position and the hydraulic ram (20) is activated.

Apparatus for the rotation of a large body, such as the base frame (11) of a solar energy collector having a large reflective dish (10), about an axis (12) utilizes a ring member or arcuate member (16). An actuator clamp (18) can be moved along the ring or arcuate member when it is not clamped to it. The actuator clamp is connected to one end of an expansion and contraction device, such as a hydraulic ram (17). The other end of the ram is connected to the body or to a rigid arm (15) that is securely connected to the body. With the actuator clamp firmly clamped to the ring or arcuate member, the expansion or contraction of the ram causes the body to rotate about axis. At least one auxiliary clamp (20, 22) may be provided which may be used to continue the movement of the body while the position of the actuator clamp on the ring or arcuate member is changed.

A heavy-duty demolition apparatus for attachment to the boom structure of an excavator, the apparatus having interchangeable jaw sets. The apparatus includes a unitary jaw assembly, having a pair of pivoting jaws connected by a main pivot pin; a first adaptor on the boom structure; a second adaptor on the jaw assembly, the second adaptor engaging the first adaptor, so that the jaw assembly can be easily removed as a unit from the boom structure and another jaw assembly installed on the boom structure; and a lock pin fixed to the first adapter and engaging the second adapter to maintain the jaw assembly in locked relationship to the boom structure. Because of the structure of the apparatus, the distance between the attachment point of the hydraulic ram on the boom structure and the main pivot point of the jaw assembly can be varied between interchangeable jaw assemblies.

The invention relates to a water surface cleaning boat and a front cabin collecting device of the water surface cleaning boat. The front cabin collecting device comprises a front cabin frame, a conveyor belt, harvesting scissors, a collecting jaw and collecting arms. The conveyor belt is arranged on the front cabin frame and used for conveying collected objects, the harvesting scissors are located at the front end of the conveyor belt, the collecting jaw is located above the harvesting scissors and can vertically rise and fall, and the collecting arms are located on the two sides of the front cabin frame. Especially, the collecting arms on the two sides are rotationally arranged on the front cabin frame through vertically-arranged rotating shafts, the front cabin collecting device further comprises first hydraulic oil cylinders, cutting mechanisms and shrinkage mechanisms, wherein the first hydraulic oil cylinders are located on the two sides of the front cabin frame respectively, the two ends of each first hydraulic oil cylinder are connected to the front cabin frame and the corresponding collecting arm respectively, the cutting mechanisms are arranged at the front ends of the collecting arms on the two sides and can longitudinally cut aquatic plants, and the shrinkage mechanisms can shrink the harvesting scissors to the portion below the conveyor belt. The water surface cleaning boat can collect water surface floating objects such as waterweeds, water hyacinth and floating rubbish of different types, under the effect of the shrinkage mechanism, unloading of the front cabin collecting device is facilitated, the structure is simple, and implementation is convenient.

A technology for repairing the surface damage of piston rod for hydraulic cylinder includes such steps as treating the surface at damaged position, build-up welding for filling the damaged recess, grinding and polishing. Its repair tool is composed of the hinged slide frame and grinding frame, an electric grinder with grinding wheel and fixed to the said grinding frame and a clamping arm with roller and arranged on said slide frame.

A ground-movable load-lifting vehicle for lifting a load over ground. The vehicle comprises a platform bed, a ground-movable carriage, and an extendible scissor linkage assembly supporting the platform bed spacedly over the carriage. A hydraulic ram system enables power extension of the scissor linkage assembly against the bias of a load supported by said platform bed. The carriage further includes peripheral ground-engageable pivotal casters, rotatably mounted to the carriage in spaced apart fashion, and a pair of ground-engageable drive wheel assemblies, mounted for relative movement to a central portion of the carriage, wherein the drive wheel assemblies provide omnidirectional displacement capability for this load-lifting vehicle. A power unit, controlled by an electronic circuit, powers both the hydraulic rams of the scissor linkage assembly and the drive wheel assemblies.

An under water self-holding sectional buoy with combined energy source is composed of external bag, internal bag, electromagnetic valve, hydraulic plunger pump, proton exchange membrane fuel cell (PEMFC), DC servo motor, casing, and a sealed cvity consisting of sealing bottom plate, working chamber of heat machine, cooling chamber of heat machine, cooling chamber of PEMFC, and bossing. The combined thermal and electric supply system of PEMFC is used for the temp difference drive in deep sea and electric drive in shallow sea.

The invention relates to a coalbed gas dynamic effect simulation system. The system comprises a gas injection system, a sample loading system, a compaction system and an information acquisition system; the sample loading system comprises a high pressure cylinder body which is provided with a plurality of information sensors, one end of the high pressure cylinder body is provided with an exhaust valve and the other end is a sealed pressure plunger; a hydraulic oil chamber is arranged in the hydraulic plunger, a gas inlet tube penetrating the plunger is arranged at the middle part of the hydraulic plunger, and the gas inlet tube penetrates the other end cover; the gas injection system consists of a high pressure bottle, a relief valve, a tube valve fitting and the like, ,and supplies gas to the gas inlet tube; the compaction system comprises a hydraulic pumping station which injects oil to the hydraulic oil chamber arranged in the hydraulic plunger and provides oil pressure; and the data acquisition of the sample loading, compaction and gas injection processes is controlled by an information acquisition control system. The simulation system can reproduce migration and outburst processes of the coalbed gas, reproduce stress concentration and stress relief processes of coal rock, and can be applied to other related physical effect experimental studies.

The present invention provides a portable machine for assembling a track for a track type work machine. A positioning block is provided for alignment of a pair of track pins that are to receive an outer track joint. A portable assembly tool having a pair of contact tools is adapted to receive a pair of outer track joints. The assembly tool is positioned over the positioning block and a hydraulic ram is extended to press each of the outer track links onto the track pins. The present invention is used with track assemblies that do not require master links.

A materials processing system adapted for the reduction of metallic materials including a material feed portion configured to convey materials to a mill portion comprising a motor driven rotor in close running fit with a cage mounted grate through which reduced material is discharged onto a conveyer. The cage is biased to a closed operating position by one or more hydraulic rams. A control system receives signals from a speed sensor operatively coupled to the rotor, and is configured to regulate the hydraulic rams, thereby controlling the opening and closing of the cage in response to rotation of the rotor. The control system is further configured to regulate the operation of the materials feed portion to suspend material feed during opening of the cage, permitting trapped or jammed material to be expelled from the mill portion.

A hoist for elevating cargo onto the bed of a truck includes a frame (11) which may be mounted to the truck bed, a platform or container (12) which is connected to the frame by a pivoting arm (9), and an arrangement of linkages for rotating the arm (9) to position the platform either on the truck bed or on a loading and unloading position resting on the ground behind the truck. A hydraulic ram (24) is connected to the arm (9) via the linkages, with the linkages being arranged to increase the effective “flow” of the arm to provide a long travel distance of the arm.

A mechanism is provided by which the wheels of an amphibious vehicle are simultaneously retracted or protracted for switching between a land mode and a marine mode of operation. Each of a transversely spaced pair of wheels is supported by a horizontally arranged spring and damper combination acting on at least one suspension link. Each spring and damper combination is in turn supported by a movable anchor point, the position of which determines the extent of protraction or retraction of the associated wheel. The anchor points for the two wheels may be located at opposite ends of a rotatable rocker member, the rotational orientation of which is determined by an actuator taking the form of for example a hydraulic ram or electric motor.