Gear pump

About: Gear pump is a research topic. Over the lifetime, 7490 publications have been published within this topic receiving 38837 citations. The topic is also known as: Gear pump.

Dual hydraulic motor drive system

Abstract: A drive system includes two reversible hydraulic motors connected in parallel to a variable displacement pump and controlled by respective 4-port, 2-position valves. The motors, at least one of which is a variable flow, variable speed motor, are coupled to a single output shaft via an intermediate gear section. The hydraulic motors are positioned on one side of the intermediate gear section and their respective drive shafts are arranged parallel relative to one another. A clutch, which is concentrically disposed within an axial bore of a gear member, is operable to couple the drive shaft of a first of the motors to the output shaft. A second gear member, which is driven by the output shaft of a second of the motors, is adapted to mesh with the first gear member. If both motors are of variable speed construction, it is possible to operate the drive in three speed ranges, i.e. by operation of the first hydraulic motor only, by operation of the second hydraulic motor only, or by simultaneous operation of both hydraulic motors.

Feed pump for a urea solution, to treat heavy vehicle motor exhaust gases, is an electromotor with an integrated gear pump of two meshing cogwheels rotated by a magnetic field

Abstract: The feed pump (1), for a urea solution (L) to treat motor exhaust gases in freight vehicles, is an electromotor with an integrated pair of meshing cogwheels as the pump. The rotary movement (R) of one cogwheel is without contact through the induction of a magnetic field from a magnetic field generator.

Fluid pumping unit, particularly for medical area for use within body vessel, has fluid pump which consists of pump rotor and drive device for driving fluid pump, where drive device has fluid supply line and drive rotor driven by fluid

Abstract: The fluid pumping unit (4) has a fluid pump which consists of a pump rotor and a drive device for driving the fluid pump. The drive device has a fluid supply line and a drive rotor driven by a fluid. The drive rotor is connected with a shaft of the pump rotor directly or by a mechanical drive. A shaft of the drive rotor is rotatably connected with the shaft of the pump rotor.

Two speed final drive gear box

Abstract: A ground vehicle final drive system includes a hydraulic motor powered by an engine driven pump, and a planetary gear final drive unit mounted between the frame of the vehicle and the wheel hub. A two-speed gear box is mechanically coupled between the hydraulic motor and the final drive unit and includes a remotely operable hydraulic shifter which can shift the two-speed gear box between two gear ratios by the use of a coupling that is splined to the output shaft and slides between an annular recess in one output gear and onto a spline connection on the other output gear.

Power divider gearbox with a planetary differential gear drive

Abstract: A power divider gearbox including a planetary differential gear drive, comprising dual planetary gears which mesh with two sun gears having different diameters and with an internal ring gear, wherein the planetary differential gear drive divides the incoming power input transmitted to the power divider gearbox through an input shaft into a mechanical branch and into a hydraulic branch (displacement machine) and in which the last-mentioned branch is connected to the internal ring gear of the planetary differential gear drive.