145 results about "Hydraulic pressure" patented technology

The invention discloses a hydraulic deep and rotary cultivation powdery ridge machine which comprises a traveling gear, a cab, an engine, a powdery ridge machine and a framework. The cab and the engine are arranged on the framework, the traveling gear is mounted on the lower portion of the framework and is driven by the engine, a cutting disc which is driven by a hydraulic motor is arranged on the front lower portion of the framework, and the powdery ridge machine is connected to the rear of the framework by hinge seats and hydraulic cylinder supports. The hydraulic deep and rotary cultivation powdery ridge machine has the advantages that the hydraulic deep and rotary cultivation powdery ridge machine can travel stably, is simple and practical, is high in soil smashing efficiency and favorable for growth of roots of crops, deep soil loosening, surface soil loosening and soil lump smashing functions are integrated, deep soil drilling effects can be realized, and the oxygen contents of deep positions of soil and the yield of the crops can be increased.

The invention discloses a supporting device and a supporting method for machining a propeller blade. The supporting device consists of a base and a vacuum sucker component positioned on the base, wherein the base comprises a bottom vacuum sucker, a chassis, a hydraulic cylinder and a piston rod, the middle of the bottom of the chassis is connected with the bottom vacuum sucker, the middle of the top of the chassis is provided with the hydraulic cylinder, the bottom end of the piston rod extends into the hydraulic cylinder, and the vacuum sucker component comprises a limiting switch, a spring, a support, a mandril, a positioning screw and a top sucker. The propeller blade is analyzed and calculated to determine the area in which the supporting device is positioned. For the propeller blade with the diameter less than 4 meters, supporting points of the supporting device are distributed at five positions of the propeller blade; and for the propeller blade with the diameter more than 4 meters, the supporting points of the supporting device are distributed at seven positions of the propeller blade. According to the invention, supporting can be quickly completed, and the stiffness of the supporting device and a supporting effect of the propeller blade can be improved.

An extensible, exterior room for a recreational vehicle trailer comprising a floor, a roof, and at least one flexible wall is provided. The floor and the roof are each extensible between a stowed position and an open position. The floor is supported at one end by a frame on the underside of the trailer chassis, and at the other end by stabilizer legs with optional wheel mounts that are rotatable between a working and a non-working position. The roof is hinged to the trailer and is supported in the open position by hydraulic struts. The flexible walls are detachable from the roof and floor and may be stowed separately. The exterior room is accessible from the interior of the trailer through an exit, such as a sliding door style patio door.

A helical displacement well with preassembled segments includes a preassembled shaft-forming penetrator tube including helical plates mounted to its exterior that may be rotated to propel the casing into the ground. A hydraulic drill motor rotates the penetrator tube and as it moves deeper into the ground. Extension tubes may be added to and coupled to the penetrator tube. A hydraulic drill motor is attached to the upper end of the extension tubes in order to continue the rotation of the assembled helical displacement well. The filter screen and the piping are installed concurrently with the addition of the extension tubes at the surface of the ground.

The invention discloses an aluminum alloy special-shaped pipe ultralow temperature medium pressure forming method. Through the characteristic that the forming performance of an aluminum alloy pipe material under the ultralow temperature condition is substantially improved, the pipe material is subjected to cooling and pressurizing in a mold through an ultralow temperature medium, and thus, the pipe material is formed into a special-shaped pipe at the ultralow temperature. According to the aluminum alloy special-shaped pipe ultralow temperature medium pressure forming method, the ultralow temperature medium is used for cooling the mold and the pipe material and meanwhile conducting pressurizing so that flexible loading of the pipe material can be achieved, and the complex special-shaped variable cross-section pipe can be formed advantageously; through the characteristic that the forming performance of the aluminum alloy pipe material under the ultralow temperature condition is substantially improved, cooling and pressurizing are conducted through the ultralow temperature medium, the pipe material is deformed under the ultralow temperature condition, the forming performance is substantially improved, and the situation that the aluminum alloy special-shaped pipe large in cross section difference is cracked during hydraulic forming is avoided; and the forming performance of the welded seam zone of an assembled welding pipe and the forming performance of parent metal are both substantially improved, the plasticity coefficients are approximate, and the problem that the welded seam zone of the large-diameter aluminum alloy special-shaped pipe is cracked is solved.

A lubricating system for a heavy-duty material processing shears provides lubricant to one of more wear surfaces on one or more wear portions in the shears. The system includes a hydraulic lubricant pump that is actuated by the main hydraulic control system by means of which the jaws of the shears are opened and closed, and may include a sequential valve to distribute lubricant to various wear portions in sequential fashion. The lubricating system may lubricate one or more wear surfaces of the lateral blade stabilizers, primary and secondary blade(s) on the upper and/or lower jaws, pivotal connections between jaws and/or between the upper jaw and the hydraulic cylinder, a forward wear plate, or any other wear portion of the shears. The lubricating system may be retrofitted onto a conventional non-lubricated shears by replacing a conventional upper jaw with an upper jaw with lubricant conduits and a lubricating system.

The invention relates to a novel hydraulic bulging process for metal tubular parts. Rubber or a polyurethane core is used to realize the hydraulic bulging of the tubular parts. The hollow core is in a hollow baggy shape; a metal rod for supporting the core is arranged in the core; the metal rod plays a role in enabling the core to insert into and draw out of a metal tube freely; according to different bulging parts, the metal rod is manufactured to be elastic or rigid; the shape and length of the elastic metal rod can be changed with the deformation of the metal tube; one end of the core is connected with a hydraulic supercharger, and bulging liquid is injected into the core by the supercharger, so that the metal tube is formed; both ends of the metal tube are provided with oil cylinders for pushing the metal tube and the core, and both ends of the core are stressed by the oil cylinders to ensure that both ends of the core are not broken; and the oil cylinders have the other function of pushing the metal tube to replenish metal required by deformation. The novel hydraulic bulging process can be used for hydraulic bulging of automobile axle housings and spiral corrugated tubes.

The invention relates to the technical field of automobile parts, in particular to a continuous nut feeding device for automobile part processing. The continuous nut feeding device for automobile partprocessing comprises an operating platform, a part clamping mechanism, a continuous feeding mechanism and a screwing mechanism. The part clamping mechanism is fixed to the right end of the upper surface of the operating platform; the continuous feeding mechanism comprises a hydraulic propelling rod, a nut feeding box and a feeding pipe; the hydraulic propelling rod is fixed to the left end of theupper surface of the operating platform; the nut feeding box is fixed to the operating platform through brackets on the front and back side faces; a nut clamping slot is formed in the upper surface of the nut feeding box; a clamping spring is connected to the left side wall of the nut clamping slot; a clamping plate is connected to the end part of the clamping spring; and a nut falling channel isarranged on the bottom wall of the right end of the nut clamping slot. Compared with an existing device, the continuous nut feeding device can feed and screw nuts continuously and can screw bolts andnuts on the automobile part quickly, and is high in work efficiency and excellent in actual effect.

The invention discloses a basketball cleaning device for sports. The basketball cleaning device comprises a cleaning box, a hydraulic telescopic rod is fixedly installed on the top face of the inner side of the cleaning box, and a supporting plate is fixedly connected to the bottom end of the hydraulic telescopic rod. In the present invention, a basketball is rolled into an arc-shaped groove formed by combining the top surfaces of the two propping pieces through an inclined feeding channel; the hydraulic telescopic rod is opened to extend; the hydraulic telescopic rod is promoted to push the cleaning claw below the supporting plate; the cleaning claw and the bristle layer on the inner surface of the propping piece are propped against the periphery of the basketball; a second electric motoris started, the output end of the second motor is promoted to drive the shaft rod to be in meshing transmission through the bevel gear, the cleaning claw is made to rotate, at the moment, the water pump is started, the circulating water pipe is promoted to spray basketballs with cleaning water through the multiple spray heads of the arc-shaped pipe, the cleaning claw brushes the basketballs in acontinuous rotating mode, the basketball cleaning effect is effectively improved, and rapid cleaning of the basketballs is facilitated.

A construction vehicle includes vehicle frames, an operator cab, a hydraulic oil tank, and engine, and an engine cover. The operator cab is mounted on the vehicle frames. The hydraulic oil tank is disposed to the rear of the operator cab and stores hydraulic oil. The engine is disposed to the rear of the hydraulic oil tank. The engine cover is a member that covers the engine. A rear face of the hydraulic oil tank and a front face of the engine cover are the same size in a widthwise direction. A rear end of an upper face of the hydraulic oil tank is positioned at the same height as a front end of the upper face of the engine cover. The upper face and side faces of the hydraulic oil tank are exposed to outside.

The invention relates to experimental equipment for testing the durability of hydraulic cylinders, and belongs to the field of machinery manufacturing. The experimental equipment is characterized in that linear reciprocating driving units, lateral force applying units, a mud water spraying unit, hydraulic cylinder mounting longitudinal adjusting units and hydraulic cylinder mounting angle adjusting mechanisms are respectively fixed onto a body frame, and 40*40 square tubes are welded to form the body frame; the linear reciprocating driving units are connected with the hydraulic cylinder mounting longitudinal adjusting units by test pieces. The experimental equipment has the advantages that the experimental equipment is simple and novel in structure and high in automation degree and has abundant functions; real service conditions can be simulated, and accordingly the durability of the hydraulic cylinders can be tested; the durability of the hydraulic cylinders can be tested in schemes of four frequencies (of 2Hz, 3Hz, 6Hz and 10Hz), and motors of the linear reciprocating driving units can drive wide guide rails to reciprocate up and down at the four frequencies; the real service conditions include lateral force, mud water spraying, mounting angles and the like; the experimental equipment is high in reliability and practicality.

A transmission controller determines whether a shift returning to low, changing a speed ratio of a continuously variable transmission to the lowest when a vehicle decelerates, is being performed or not, calculates a primary pressure measured lower limit value at which a belt begins to slip actually, based on a deceleration of the vehicle and the speed ratio of the continuously variable transmission, and sets a lower limit value of a target value of the primary pressure during the shift returning to low as the primary pressure measured lower limit value.

In a work vehicle, a control unit is configured to control a lock-up hydraulic pressure for controlling switching of a lock-up clutch. The control unit is configured to execute a lock-up slippage control for switching the lock-up clutch into a slippage state when the work vehicle starts moving. The control unit is configured to control the lock-up hydraulic pressure based on work instrument load information, pertaining to a load of a work instrument during execution of the lock-up slippage control.

The invention discloses a hydraulic oil filtration system and a hydraulic shovel. The hydraulic oil filtration system comprises a pilot control system and a bypass filtration oil way, wherein the pilot control system is used for guiding and controlling a hydraulic working device (200), the bypass filtration oil way is provided with a bypass filter (3), a pilot pump (1) is placed inside the pilot control system, an oil suction of the pilot pump (1) is connected with a hydraulic oil tank (100), one end of the bypass filtration oil way is connected with the hydraulic oil tank (100), and the other end of bypass oil way is connected on a pilot control oil way between the pilot pump (1) and the hydraulic working device (200). Due to the fact that the bypass filtration oil way is provided with the bypass filter and is connected on the pilot control oil way and the hydraulic oil tank, high-precision and high-efficiency filtration is carried out on hydraulic oil by utilizing of a flow rate and oil pressure of the hydraulic oil on the pilot control oil way, working efficiency is improved, and the structure is simple and stable.

The invention relates to a full-electric scissor type aerial work platform. The platform comprises a lifting unit, a walking unit, a steering unit and a control unit, wherein the lifting unit comprises a lifting adjusting assembly; the walking unit comprises an electric driving part; the steering unit comprises an electric steering control component; and the control unit comprises a whole machine controller, a lifting unit sensor used for collecting height and speed information of a working platform and a steering unit sensor used for collecting steering angle information of the working platform, and the lifting unit sensor, the steering unit sensor, an electric lifting control component, the electric steering control component and an electric driving component are all connected to a whole machine controller. The whole machine is fully electrically driven, no hydraulic system is involved, the problems that an existing scissor type aerial work platform electro-hydraulic driving system is low in electric energy utilization rate, has the risk of hydraulic oil leakage and is high in maintenance cost are solved, and the purposes of reducing the battery installed capacity of the whole machine and reducing the manufacturing and maintenance cost of the whole machine are achieved through the efficient electric energy utilization rate of a motor.