36results about How to "Reduce hydraulic power" patented technology

A shredding device comprising a drum having a central hub rotating around an axis on which a plurality of discoid elements are mounted adjacent, able to rotate solidly together and carrying peripherally beating elements. Each discoid element comprises a set of beating elements which comprises at least a pair of beating elements and, along the axis, the pairs of beating elements of the discoid elements are disposed angularly staggered with respect to the same axis.

The invention relates to an energy dissipation buffer type hydraulic dam which comprises a dam body. A first mounting base is arranged on the dam body and is connected with a connecting baffle througha first hinge shaft, a second mounting base is arranged on the right side face of the baffle and is connected with a top head of a piston rod of a first multistage hydraulic cylinder through a secondhinge shaft, the tail end of the multistage hydraulic cylinder is connected with a third mounting base through a third hinge shaft, and the third mounting base is fixedly connected to a top head of apiston rod of a second multistage hydraulic cylinder, and the second multistage hydraulic cylinder is horizontally arranged in a foundation pit on the dam; a plurality of drainage holes are formed in the upper portion of the baffle, guide sliding rails are arranged on the two sides of the drainage holes, a sliding plate in sliding connection with the guide sliding rails are arranged between theguide sliding rails, and a displacement adjusting device is arranged above the sliding plate; and a buffer energy dissipation device is connected to the left side of the baffle through a connecting device. According to the energy dissipation buffer type hydraulic dam, the buffer energy dissipation device is additionally arranged in front of the baffle; meanwhile, the anti-rusting treatment on thebaffle is strengthened, the service life of the overall hydraulic dam is prolonged, the practicability is high, and the dam is worthy of popularization.

A flow-adjustable double side plate type three-position four-way rotary valve comprises a valve element, wherein valve plates are installed at two ends of the valve element in a matched mode, an adjustable boss is installed at the other end of each valve plate, the centers of the adjustable bosses are holed and are installed on an output end of a motor shaft of a built-in motor, a lead screw adjusting nut mechanism consists of an output lead screw shaft slippage nut of the built-in motor, wherein a lead screw shaft is arranged in a central hole of the motor shaft, the slippage nut can slide in an inner hole formed in an outer end cover, thrust ball bearings are connected between the slippage nut and the adjustable bosses, the outer end cover is connected with a valve sleeve, threads at two ends of the lead screw shaft are oppositely symmetric so that the adjustable bosses at two ends of the valve element can perform same-direction or reverse-direction linear motions, four small holes for springs to be arranged are formed in the adjustable bosses to ensure that the adjustable bosses always abut against the end face of the valve element in the axial moving process. The flow-adjustable double side plate type three-position four-way rotary valve controls on and off of hydraulic oil through matched rotations of the valve plates at two ends of the valve element, adjusts oil flow through the adjustable bosses and enables a hydraulic system to be simplified.

The invention discloses a turning gradient control valve, which is designed to provide a two-functional turning gradient control valve which can absorb vibration of the system, has low noise and energy saving, and can be applied to a static signal type and a dynamic signal type, wherein a first hole (P) in communication with a first throttle groove (4a1) and a second throttle groove (4a2) of a second hole (CF) is arranged on a beading at the right side along the circumference direction; the first hole (P) is in communication with a third throttle groove (4b1) and a fourth throttle groove (4b2) of a third hole (EF), wherein the first throttle groove (4a1) and the second throttle groove (4a2) are matched with a throttle side (5a) of a first sunken cutting groove of a valve body (5a) to form a valve port through which the first hole (P) is led to the second hole (CF); the third throttle groove (4b1) and the fourth throttle groove (4b2) are matched with a throttle side (5b) of a second sunken cutting groove of the valve body (5) to form a valve port through which the first hole (P) is led to the third hole (EF); the left end of the valve core (4) is provided with an asymmetric composite damper (3) while the right end of the valve core (4) is provided with a first damping hole (6).

The invention provides a fluid power optimizing method for a hydraulic valve and belongs to the technical field of structure optimization of hydraulic valves. By the adoption of the fluid power optimizing method for the hydraulic valve, the problem that in the prior art, since a large quantity of manual calculation and screening is needed for structure optimization design of a hydraulic valve to compensate for the influence of fluid power, the designing efficiency is low is solved. The fluid power optimizing method for the hydraulic valve comprises the steps that structure parameters which can be optimized are determined; structure parameters to be optimized are selected, and the value range of the structure parameters to be optimized is determined; a three-dimensional valve flow channel model of the hydraulic valve is established; an intra-valve flow field in the hydraulic valve is calculated; fluid power borne by a valve element of the hydraulic valve is extracted; an optimized objective function is established according to fluid power of the hydraulic valve, constraint conditions of the structure parameters to be optimized are determined, and meanwhile the expected iteration number and iteration stopping precision of the optimized objective function are set; and optimized iteration is conducted on the optimized objective function according to the constraint conditions of the structure parameters to be optimized till the iteration stopping precision or the expected iteration number is achieved, and the optimization process is ended. The fluid power optimizing method is used for structure optimization of the hydraulic valve.

The invention discloses a balanced high-pressure large-current AC (Alternating Current) servo direct-driven cartridge valve, comprising an AC servo motor, wherein the AC servo motor and a harmonic reducer are connected to a valve sleeve, the output shaft of the AC servo motor is connected with the input shaft of the harmonic reducer, the output shaft of the harmonic reducer is connected with a leading screw by a coupler, the leading screw is provided with a sliding block, the sliding block is connected with a linear displacement sensor, the sliding block is connected with a valve rod, the end of the valve rod is provided with an external thread, a valve core is provided with an internal thread, the valve rod drives the opening and closing of the valve core by internal thread connection, a small end cover is connectedly fixed on a valve seat, and is fixedly connected with a valve core sleeve, a valve sleeve is inserted in the valve seat and fixed in the valve seat by a top end cover, the top end cover is fixed with the valve seat, and the valve seat is installed in a hydraulic system by a plug-in manner, so that the influence of the oil-liquid pressure on the valve is reduced, and the instant hydraulic power of the valve is small. According to the invention, as a closed-loop control servo direct-driven manner is adopted, the valve has the advantages of simple structure, rapid response, accurate control and high linearity.

A unilateral plate type three-position four-way rotary valve with adjustable flow, including a driving motor, the output shaft of the driving motor is connected to the drive shaft through a star gear reducer, a rotating arm sleeve, and one end of the valve core is connected to the rotating arm sleeve , the other end fits with the valve plate, the drive shaft is connected with the adjustable boss, the adjustable boss is connected with the valve plate through a groove, the driving motor is fixed on the left end cover, the adjusting motor is fixed on the right end cover, and the adjusting motor The output shaft of the screw is a lead screw, and the sliding nut of the lead screw can move back and forth in the inner cylindrical groove of the right end cover. The adjustable boss always presses the valve plate against the end face of the valve core during the axial movement, and the driving part Using servo motor plus planetary gear reducer, the present invention improves the control precision and can adjust the reduction ratio, the adjustable boss and the adjustable screw nut mechanism can easily adjust the flow and close the valve, realize the integration of flow adjustment, and simplify the hydraulic system .

The invention discloses a high-speed and large-flow slot slide valve. Install two snap-fit ​​electromagnets symmetrically in the valve body cavity at both ends of the valve core. The hollow valve core is covered with a valve sleeve. One end of the valve core can be clutched with the snap-fit ​​electromagnet at one end, and the other end of the valve core is equipped with a magnetic pole. , the magnetic pole can be clutched with the snap-on electromagnet at the other end, the valve core and the valve sleeve have the same number, the same width, and the same distance between the non-circumferential gap-shaped valve ports on the mating surface, the valve port and the oil outlet of the valve body connected. The hollow valve core structure is adopted to reduce the mass of the moving parts; the driving force of the valve core movement is generated by the opposite clapping electromagnet, and the energy utilization rate of the electromagnet is high; , which reduces the movement distance of the valve core when it is opened and closed; at the same time, this gap valve port can reduce the hydraulic power of the valve port. Therefore, the sliding valve structure adopted in the present invention can increase the opening and closing speed of the valve core under the premise of ensuring a certain flow rate.

An apparatus for pile-driving or drilling, particularly a foundation machine, including at least one hydraulic drilling or vibration drive, which is connected with a control block in an open hydraulic circuit, by way of which drive at least one further consumer can be operated. The drive is connected with a pump by way of a first feed line and with a tank by way of a first return line. The hydraulic drive is additionally connected directly with the pump by way of a second feed line, and directly with the tank by way of a second return line.