31results about How to "Stable output force" patented technology

A concrete floor leveling device includes a transmission device and a power source is located in a body and connected to wheels which are connected to the body. A connection unit is connected to the body and a blade is connected to the body by the connection unit. The power source outputs a stable power to drive the blade to level the concrete floor and to ensure that the blade levels the concrete floor with even force.

The invention discloses an asynchronous door knife of an elevator door machine. The clamping action for a landing door linked door ball is realized through the cooperation of a door knife assembly and a cam device, so that the linkage of a carriage door and the landing door can be realized. The door knife assembly is installed on a movable part, and the cam device is installed on a stationary part. In the closing process for opening and closing the linked door, the door knife assembly clamps the landing door linked door ball, and the asynchronous door knife is self-locked, so that the thrusting force for the landing door linked door ball can be continuously and stably supplied; when the door is about to close, the cam device acts on the door knife assembly, a gap needed by the asynchronous door knife and the landing door linked door ball is formed, and the asynchronous door knife is released; and when the door is completely closed, the door knife assembly is subjected to the cam device and cannot produce the action for clamping the landing door linked door ball, and the gap between the door knife assembly and the landing door linked door ball is reliable. The landing door linked door ball is always clamped by the asynchronous door knife in the door closing process, so that a stable drive force is supplied for a landing door.

The invention discloses a novel vibration reduction and buffering integrated device, which comprises a variable-section cylinder, a first piston arranged in the cylinder, a first piston rod connected with the first piston, and a first piston connected with the first piston. The second piston rod, the second piston arranged at the end of the second piston rod, and the upper end cover and the lower end cover respectively arranged at the end of the cylinder; the cylinder includes a damping section and a buffer section, the first piston and the inner wall of the cylinder There is a gap between them; the second piston is arranged in the buffer section and the second piston can move along the axial direction of the cylinder, and the buffer section is filled with ferromagnetic particle balls. The device of this technical solution utilizes the performance of the magnetorheological damper , can adapt to a variety of external working conditions, and has good vibration damping performance; when buffering, the performance of the particle damper is used, the output force value is stable, and the magnetic field can be changed by adjusting the coil current, and the friction coefficient between the second piston and the particles can be adjusted. It can adapt to various buffer working conditions; and the invention has compact structure and simple installation form.

The invention discloses a proportional electromagnet for controlling a position of a valve core of a hydraulic valve. The proportional electromagnet comprises an electromagneticinduction component and an armature component, wherein the armature component is arranged in the electromagneticinduction component and is in sliding fit with the electromagneticinduction component; the proportional electromagnet is also provided with a hydraulic passage which is communicated with an upper end face and a lower end face of the armature component and forms a hydraulic loop with a valve core cavity of the hydraulic valve; a hydraulic loop is formed between the upper end face as well as the lower end face of the armature component and the valve core cavity of thehydraulic valve, so that the upper end face as well as the lower end face of the armature component and the valve core cavity of thehydraulic valve are hydraulically balanced, hydraulic disturbance is effectively eliminated, the output power of the proportional electromagnet is stably output, and the positional relation of the valve core and a valve seat of the hydraulic valve is effectively controlled; and thus, the flow velocity of oil in the hydraulic valve is controlled, the hydraulic pressure of the oil in an executing element of the hydraulic system is stably adjusted, and the hydraulic equipment stably works.

The invention provides an automobile electric vacuum pump test system. The automatic electric vacuum pump test system comprises a pedal force loading system, a pedal, a vacuum booster, a braking main cylinder, a vacuum air storage tank, an electric vacuum pump, a vacuum pump fixing device, a load-sensing proportion valve, a left front wheel cylinder, a right front wheel cylinder, a left rear wheel cylinder, a right rear wheel cylinder and the like, wherein the pedal force loading system is used for exerting loading forces with different torques onto the pedal; and the vacuum pump fixing device is used for fixing electric vacuum pumps in different shapes and with different specifications and sizes onto a rack which is used for test. The electric vacuum pump is placed in the automobile electric vacuum pump test system to be measured, so that the electric vacuum pump is approximate to a service status to the utmost extent, and meanwhile, various index data during test can be output; as the fixing device which can be matched with various electric vacuum pumps is adopted, the electric vacuum pump can be mounted and dismounted conveniently and quickly, and accordingly, the troublesome step of replacing the fixing device during test on different electric vacuum pumps is omitted; the efficiency within unit time is higher; and manpower and material resources in the test process are greatly saved.

The invention discloses a hydraulically driven double-acting mud pump, which includes a power motor, a pressure oil pump, a three-position four-way hydraulic reversing valve, a hydraulic power end and a mud pump head. The power motor is traditionally connected to the pressure oil pump, and the pressure oil pump passes through a pipeline. It is connected to the P port of the three-position four-way hydraulic directional valve, the T port of the three-position four-way hydraulic directional valve is connected to the oil tank through the pipeline, and the A port and B port of the three-position four-way hydraulic directional valve are connected to the hydraulic power end , The hydraulic power end is traditionally connected to the mud pump head, the lower end of the mud pump head is connected to the low-pressure manifold, and the two sides of the mud pump head are respectively connected to the high-pressure manifold. The hydraulically driven double-acting mud pump of the present invention can make the instantaneous flow and pressure of the liquid discharged from the mud pump more stable and reduce fluctuations.

The invention relates to a pressure cylinder and a lifting platform with the pressure cylinder. The lifting platform includes a table top and a lifting support device arranged under the table top. The power mechanism in the lifting support device uses the pressure cylinder of the present invention. The pressure cylinder includes a cylinder body, a piston and a piston rod, and the piston divides the cylinder body into a first chamber. and the second chamber, the piston rod is connected to the piston and protrudes from the first chamber, the first chamber and the second chamber are in fluid communication, in the first region in the axial direction of the cylinder, the inner diameter of the cylinder is from The direction from the second chamber to the first chamber gradually increases, and in the second region in the axial direction of the cylinder, the inner diameter of the cylinder remains constant in the direction from the second chamber to the first chamber. The second area is located above the first area and directly connected with the first area, so that the output force remains stable when the piston rod is stretched out from the cylinder. The lifting platform can be equipped with a synchronous lifting device and an energy conversion device, so that the lifting platform can achieve stable lifting under different loads.

The invention provides a one-key type circuit breaker just-in-place precise positioning and debugging device and a use method thereof, wherein the device comprises a fixed rod, a push rod, a motor andan intermediate relay; The fixing rod is used for fixing with the driving crank arm of the circuit breaker; The push rod and the fixed rod are connected with each other through a universal joint bearing; The motor drives the push rod to rotate; The two lead-out wires of the circuit breaker break are connected in series with the coils of the intermediate relay; The normally closed contact of the intermediate relay is connected in series with the motor. So that that structure of the invention is simplify, low cost, easy to operate, As long as a button switch is use, that precise positioning ofthe rigid joint point of the main body fracture can be realize, The invention avoids the deviation of the rigid point data caused by the difference of the human hand strength, ensures the accuracy ofthe subsequent circuit breaker debugging and test data, does not need to repeatedly pull up or down and insert the skid bar, and greatly improves the production efficiency for the mass production of the production workshop.

The invention discloses a force amplifying mechanism capable of generating axial displacement and axial thrust through rotation. The force amplifying mechanism comprises a piston and a gear ring, the piston and the gear ring are oppositely arranged, the top of the gear ring is close to the bottom of the piston, a plurality of spiral rising ball channels are annularly distributed between the piston and the gear ring, and steel balls are arranged in the spiral rising ball channels. According to the invention, small rotation torque can be converted into large axial thrust and axial displacement through the gear and the spiral ball groove structure, and the generated axial displacement and thrust can be adjusted.

The invention discloses a twin-turbine internal combustion engine. The twin-turbine internal combustion engine is characterized in that a power shaft is in contact with left and right turbine racks for supporting through a sliding bearing, the power shaft is in contact with a housing through a rolling bearing, the power shaft and a ratchet fly wheel are in bonding through a ratchet fly wheel key, a round steel plate and turbine discs are fixedly connected to arc-shaped cylinders of turbines through screws, a cylinder sleeve is arranged in each cylinder, a piston is mounted at one end of an arc-shaped cylinder of the piston, a piston ring is arranged next to the piston, the other end of the arc-shaped cylinder is propped against a cylinder cover, an exhaust valve is arranged on the cylinder cover, oil injection holes are formed in the periphery of the exhaust valve, an inlet valve is arranged on the piston, and water spray holes are formed in the periphery of the inlet valve. The twin-turbine internal combustion engine disclosed by the invention solves the problem of high internal combustion waste heat and severe pollution. The twin-turbine internal combustion engine is small in noise, small in vibration and long in service life. The power shaft is straight, the output force is steady, the weight of the twin-turbine internal combustion engine is half of that of a crankshaft internal combustion engine, and the effective work can reach 90%.