36results about How to "Great power to weight ratio" patented technology

The invention discloses a high-voltage permanent magnet polarized bidirectional proportional electromagnet. It is an electro-mechanical conversion mechanism for proportional valves and servo valves in fluid control systems. The high-voltage permanent magnet polarized bidirectional proportional electromagnet adopts a specially designed bidirectional basin-shaped pole shoe structure composed of yoke iron and guide sleeve. A permanent magnet is installed in the middle of the guide sleeve, and control coils are installed on both sides of the permanent magnet. The permanent magnet generates The polarized magnetic field and the control magnetic field generated by the control coil are differentially superimposed, and a bidirectional and continuous output force proportional to the input signal can be obtained on the armature, and a good proportional control characteristic is obtained. The high-voltage permanent magnet polarized bidirectional proportional electromagnet has low energy consumption, eliminates zero dead zone, and has good static and dynamic characteristics. Therefore, the present invention can be widely applied to proportional valves and servo valves.

The invention discloses a ultrahigh-pressure axial plunger pump. The ultrahigh-pressure axial plunger pump comprises a transmission shaft, an inclined disc and a plunger; the inclined disc coats the transmission shaft; one end of the plunger is mounted on the inclined disc; and a dip angle is formed between the inclined disc and the axis of the transmission shaft. The ultrahigh-pressure axial plunger pump further comprises a cylinder body provided with multiple cylinder body holes uniformly staggered around the axis of the cylinder body; the other end of the plunger is mounted in the cylinder body holes; the cylinder body, a distribution disc and a back cover are tightly bonded in sequence; the cylinder body and the distribution disc coat the transmission shaft; the distribution disc and the back cover are provided with inner oil holes and outer oil holes alternately distributed; the cylinder body holes and the inner oil holes are communicated to form internal oil ways; the cylinder body holes and the outer oil holes are communicated to form external oil ways; one end of the transmission shaft is used for connecting with a driving device; and the other end of the transmission shaft is mounted at the front part of the internal oil way in the back cover. The ultrahigh-pressure axial plunger pump changes the fluid output pressure, and improves one time of the pressure grade to achieve the super pressure purpose.

A propulsion method and device for ships and other underwater objects. This method is based on the principle of hydraulic transmission, and converts the mechanical energy output by the main engine of the ship into the pressure energy of hydraulic oil through a two-way variable pump to drive propellers and other auxiliary devices respectively. The pressure energy of the hydraulic oil is converted into the mechanical energy of the propeller by the hydraulic motor, and the speed and steering of the propeller are adjusted through the control of the two-way variable pump and the main engine of the ship to adapt to various motion conditions of the ship. The hydraulic accumulator is used to recover the energy output by the hydraulic motor under the pump condition, and release the energy during the commutation acceleration process. Through pipeline switching, the two main engines of the ship can work in various ways. The propulsion method has the advantages of flexible arrangement of the engine room, high power-to-weight ratio of equipment, good safety and reliability, high maneuverability, and good matching characteristics of working conditions.

The invention provides an alternating-current hydraulic multi-motor high-precision synchronous rotation control device, and belongs to the technical field of alternating-current hydraulic pressure. Analternating-current servo variable-frequency motor is connected with a three-phase alternating-current generator through a coupler to drive the three-phase alternating-current generator to generate three-phase alternating current; the three-phase alternating-current generator is connected with three synchronous shunts through a pipeline, and the pipeline is provided with a leakage compensating device; the three-phase alternating current is divided into three channels of alternating current which are equal to one another completely by the three synchronous shunts; a three-phase alternating-current hydraulic motor A is separately connected with first oil outlets of the three synchronous shunts through pipelines; a three-phase alternating-current hydraulic motor B is separately connected with second oil outlets of the three synchronous shunts through pipelines; and a three-phase alternating-current hydraulic motor C is separately connected with third oil outlets of the three synchronousshunts through pipelines. By the device, a plurality of three-phase alternating-current hydraulic motors can synchronously and continuously rotate, the structure is simple, and shunting in an optionalratio can be realized; and synchronous rotation at different rated torques can be realized by use of the alternating-current hydraulic motors with different displacements, variable-frequency speed regulation can be carried out, and control precision is high.

The invention discloses an underground rescue robot, which belongs to the technical field of robots. The invention provides the underground rescue robot, which can perform underground rescue task with less labor, high speed, high accuracy and high efficiency. The robot comprises a machine frame, wherein a fixed table with a through hole is fixed in the machine frame, a lifting motor is fixed above the fixed table and the motor shaft of the lifting motor is connected with a screw rod through the through hole of the fixed table; a lifting table with threads is arranged under the fixed table, and the threads of the lifting table correspond to those of the screw rod; hydraulic cylinders are arranged under the fixed table and above the lifting table respectively; the piston rods of the hydraulic cylinders are connected with telescopic rods; a rotating motor is fixed above the lifting table; the motor shaft of the rotating motor is connected with one end on one side of a three-end connecting piece through a through hole on the lifting table; and the two ends on the other side of the three-end connecting piece are connected with the top ends of first and second fixed plates with grooves and through holes, and mechanical arms are arranged on the first fixed plate and the second fixed plate.

The invention belongs to the fields of civil engineering and mechanical engineering, and the technical field of shock isolation, and discloses a three-dimensional shock isolation device with enough vertical bearing capacity and anti-swing capacity, and capable of realizing self-balance, and a method. For this, the technical scheme adopted by the invention is as follows: the three-dimensional shockisolation and anti-swing device with self-balance comprises a left-part hydraulic system, a right-part hydraulic system, a balance cylinder and a connection component, wherein the left-part hydraulicsystem comprises an upper-part pin seat, a pin shaft, an upper-part pin head, a piston rod, a hydraulic cylinder body, an exhaust hole, a piston, a damping hole, hydraulic oil, an oil port, a connection guide pipe of the left-part hydraulic system, a bottom pin seat, a lower-part pin head and an upper cover plate of a hydraulic cylinder; and the balance cylinder comprises a balance cylinder piston, a balance cylinder body, a piston rod of the balance cylinder, a left oil port of the balance cylinder, a right oil port of the balance cylinder, an exhaust hole of the balance cylinder, and an upper cover plate of the balance cylinder. The three-dimensional shock isolation and anti-swing device with self-balance, and the method are mainly applied to a design and manufacturing occasion.

The invention discloses an electromagnet used for an electronic multi-arm reading mechanism. The electromagnet comprises a hollow electromagnetic coil, a permanent magnet and a movable iron core which is arranged in the hollow electromagnetic coil in a swingable manner, wherein the permanent magnet is arranged on the outer wall of the hollow electromagnetic coil and is positioned on the swinging plane of the movable iron core. The electromagnet is sensitive in action and quick in dynamic response, the action frequency of the electromagnet can be improved, the power weight ratio of the electromagnet is large, and the work heat stability is improved.

The invention discloses a mixed-type wave power generation device. The device is composed of a wave energy conversion device capable of absorbing kinetic energy of a floater in multiple degrees of freedom, and a hydraulic type energy output system arranged inside the wave energy conversion device, and belongs to a wave power generation device. The wave energy conversion device captures wave energy and further converts the energy into mechanical reciprocating motion, and the hydraulic type energy output system conducts peak clipping and valley filling on captured fluctuation energy and outputs the energy to an electric generator stably. The mixed-type wave power generation device has the characteristics of being high in energy capture width ratio and sea condition adaptability, and meanwhile capable of capturing the kinetic energy of the floater in multiple degrees of freedom, thereby being a mixed-type wave energy conversion device.

The invention discloses a moving iron electromagnet. The permanent magnet is used to generate the excitation magnetic field, which greatly reduces the energy consumption of the system, reduces the calorific value of the system, and improves the system performance; uses the full bridge magnetic circuit to realize the accurate control of the movement of the moving iron, and achieves good control performance; adopts "∏ "Shaped armature, the middle arm of the armature and the control coil do not move during the movement, and the side arm of the armature is connected by light materials to lead out the output, which greatly reduces the mass of the movable part and is conducive to the increase of frequency; the armature on both sides of the armature The effect of the high stiffness spring is conducive to the reduction of hysteresis; there is only one control coil, and the control coil and the output part are separated, the space around the armature is spacious, the structure is simplified, and it is beneficial to reduce the volume of the entire electromagnet; it has a compact structure, The advantages of small size, high efficiency, energy saving, and large power-to-weight ratio. The invention can be applied to systems requiring high-frequency electromagnetic drive devices such as electronic engraving machines.