31results about How to "No oil leakage problem" patented technology

The invention provides a pulse condition stimulator, comprising a base plate; a water storage tank fixedly arranged on the base plate with water therein and provided with a plurality of water inlets and water outlets; and a plurality of water pumps fixedly arranged on the base plate in rows. Each water pump is provided with a water inlet and a water outlet. The water outlets of the water storage tank are connected with the water inlet of each water pump. The water outlet of each water pump is connected to a pulse condition synthesizing voltage-stabilizer. The pulse condition synthesizing voltage-stabilizer includes at least one water return mouth in connection with the water inlets of the water storage tank. A solenoid value is arranged between the water outlet of each water pump and the pulse condition synthesizing voltage-stabilizer. The stimulator also comprises a stimulated arm. The stimulated arm is provided with a stimulated blood vessel. One end of the stimulated blood vessel is connected with the pulse condition synthesizing voltage-stabilizer and the other end is connected with the water inlets of the water storage tank. The stimulator of the invention utilizes distilled water to stimulate blood, which overcomes the problem of an existing stimulator with oil leakage and at the same time, is capable of stimulating complex pulse condition waveforms. The stimulator is also highly accurate.

The invention provides a bird-strike resistant aircraft external auxiliary fuel tank leading edge structure. The bird-strike resistant aircraft external auxiliary fuel tank leading edge structure comprises a fairing, a buffering baffle, a plug body, a front section skin I and a front section skin II, wherein the fairing is a variable-section thick wall structure; the front section skin I is connected with the fairing through a connecting piece so as to ensure that the assembling gradient between the front section skin I and the external surface of the fairing is less than 1 mm; and the buffering baffle is positioned behind the fairing and used for separating the front section skin I from the fairing so that fuels in the front section skin I and a rear structure of the front section skin I cannot enter the fairing. The invention is advantaged in that the structural design of the bird-strike resistant aircraft external auxiliary fuel tank leading edge structure is simple, and the bird-strike resistant aircraft external auxiliary fuel tank leading edge structure is very convenient to manufacture and assemble, can effectively resist flying bird strike and can also ensure that an auxiliary fuel tank cannot suffer a fuel leakage problem or a part fall-off problem to affect the flying safety of an aircraft.

The invention discloses uniform oiling equipment for automatic oiling of a lead screw. The equipment comprises an oil drum and an air pump connected with the oil drum, and further comprises a PLC control system, a feeding mechanism used for feeding a lead screw provided with a turbine, a transmission mechanism used for driving the lead screw to rotate, an oiling mechanism used for evenly oiling the lead screw, and a collecting mechanism used for cleaning residual waste oil after oiling of the lead screw, the oiling mechanism is provided with a sliding rail, a sliding block, an oil gun arrangedon the sliding block, a first linkage device used for achieving overall movement of the sliding block and a switch used for controlling opening or closing of the oil gun. The equipment realizes automatic oiling and uniform oiling of the screw rod.

The invention relates to an electric control mechanism for damping plate of stalled blade in wind turbine, belonging to wind power generation area, characterized in that the guide head of lead screw is located in guide cylinder and connected with the lead screw, the lead screw is connected with nut and the nut is connected with the rotor of permanent magnet motor. There are no pressure and no leakage in the electric control mechanism for wind turbine. The electric control mechanism can not be influenced by climate and the maintenance cost is decreased greatly. The mechanism has big torque. When it does not act, there is no need to electrify to lock the damping plate tightly by big self-locking torque and electric energy exhausted for maintaining locking the damping plate is saved. The control circuit can be sent to actuator mechanism by electric collection ring. Compared with sending the control circuit to the actuator mechanism by hydraulic rotating joint, it is cheaper, simple and stable. The invention can adjust the torque and the speed automatically in random and it is the ideal control mechanism for damping plate of stalled blade in wind turbine.

The invention relates to a modification method of a breaker, and particularly relates to a modification method of a high-voltage breaker. Through the modification method, the modified vacuum breaker has the effects that: after partial 10kV breakers for urban power supply are replaced, the overloading condition of the breaker is eliminated, the power failure times and overhaul times are reduced, and the power supply reliability is enhanced; the vacuum breaker is replaced, thus the workload and labor intensity of the maintainers are greatly reduced and the overhaul and maintenance costs are saved; the oil leakage problem of the vacuum breaker is avoided, the defect condition of the equipment is reduced, and the maintenance workload is reduced; and after the vacuum breaker is replaced, the operational reliability of the equipment is increased and the safe operation coefficient of the power grid is increased.

A control unit of hydraulic press for making the pressing part reach the working position automatically is composed of a two-position two-way return oil valve, dual-control check valve and hydraulic one-way valve. It features that it cylinder has a lower cavity with a low-pressure energy accumulator and an upper cavity with a high-pressure energy accumulator, its operating handle is arranged in a tubular holder to which a power arm for driving oil pump is fixed, and a universal coupling is used to control said return oil valve.

The invention discloses a monorail crane control device. The monorail crane control device comprises a mounting plate, an operating handle, a position sensor, a data acquisition circuit, a processor,a data transmission module and a power supply module. The operating handle is mounted on the mounting plate. The position sensor is mounted on the operating handle. The data transmission module is used for filtering analog signals of the position sensor and converting the analog signals into digital signals. The processor is used for converting the digital signals into corresponding operating commands and transmitting the operating commands to a controller for a monorail crane through the data transmission module. The power supply module is used for supplying power to the position sensor, thedata acquisition circuit, the processor and the data transmission module. Compared with a traditional hydraulic operating device, the monorail crane control device has the advantages that operation iseasy to conduct, the structure is simple, the weight is small, and the oil seepage and leakage problems are avoided; and compared with the mode that the control commands are transmitted in the analogform, the antijamming capability is great, and working performance is stable.

The invention discloses a new energy commercial vehicle steering system which comprises a steering wheel, a column tube with an intermediate shaft assembly, a steering gear, a steering plumbing arm, a steering straight pull rod, a left steering knuckle, a right steering knuckle and a transverse pull rod arranged between the left steering knuckle and the right steering knuckle and further comprises a pair of connecting pull rods. The steering straight pull rod is connected with the steering knuckle on one side in a hinged manner, the knuckle on each side is hinged to the butt joint end of the transverse pull rod through the corresponding connecting pull rod, and an electric power assisting structure is arranged on the steering gear. The electric recirculating ball type steering system adopting the disconnected steering trapezoidal structure can provide larger assisting power compared with an electric gear rack type steering gear, can provide reliable steering assisting power for a vehicle with the front axle load of 1.6-3 tons, and does not need to adopt a high-price electric hydraulic pump, so that the cost of parts of the system is low, high energy consumption required by the electric hydraulic pump is avoided, due to the absence of steering fluid, the problems of oil leakage and oil seepage do not exist; and stability and reliability are realized.

The invention relates to an assembly process and provides a brushless motor assembly process, which comprises the following steps: 1) assembling a rotor assembly, wherein assembly of the rotor assembly comprises assembly of an end cover assembly and assembly of a rotor with magnetic steel; 2) assembling a stator assembly, wherein in the stator installation process, heating a housing to expand the housing first, and then, placing stator assembly in the housing; 3) installing the rotor assembly in the stator assembly; and 4) assembling induction magnetic steel to a rotor shaft. The provided brushless motor assembly process can ensure stability of a brushless motor, good consistency of motor performance and small variation, and solves the technical problems that in the brushless motor assembly process in the prior art, since a rotor plays up and down, and the rotor assembly and the stator assembly are poor in concentricity, the motor performance consistency is poor, stability is poor and variation is large.