41results about How to "Small commutation impact" patented technology

The invention belongs to the technical field of tooth pick testing devices, and in particular relates to an incomplete gearbox cutting and reversing device, which solves the problem that existing conventional transmission devices cannot meet the requirements of tooth picking testing. Including the input shaft and the box body, the box body is divided into a deceleration chamber and a reversing chamber, the No. 1 gear is installed on the input shaft, the No. 1 and No. 2 gears mesh, the No. 2 and No. No. 4 and No. 4 gears are meshed, No. 4 and No. 5 gears are installed on No. 2 shaft, No. 5 and No. 6 gears are meshed, No. 6, No. 7 gears and No. No. 8 gear meshes, No. 8 and No. 9 gears are installed on No. 4 shaft; No. 9 and No. 10 gears mesh, No. 10 and No. 11 gears are installed on No. 2 output shaft, and No. Fully toothed. The invention has beneficial effects: it can realize a stable transmission relationship, provide two kinds of stable output rotational speeds, and provide a reliable mechanical realization device for studying the cutting process of picks under laboratory conditions.

The invention discloses a closed energy-saving shield screw conveyor hydraulic system, which comprises a motor, a variable displacement pump, an oil tank, an oil replenishing constant pressure pump, two oil replenishing one-way valves, an oil replenishing safety valve, two system one-way valves, a system one-way valve, two hydraulic control one-way valves, two execution one-way valves, an execution safety valve, a conveyor variable displacement motor, a proportional reversing valve, a rodless chamber side hydraulic control one-way valve, a rod chamber side hydraulic side hydraulic control one-way valve and a dumping port hydraulic cylinder. In the shield thrust process, the rotating speed and the torque of a screw conveyor are adjusted by adjusting the displacement of the variable displacement pump and the variable displacement motor, so that the valve control loss of the proportional reversing valve is avoided, and the high energy efficiency is realized; the system adopts a closed loop, and has the advantages of simple pipeline, small installation space and small reversing shock; and the oil replenishing pump adopts a constant pressure pump, so that the energy utilization rate is further improved.

The invention discloses a kind of no leakage and pure water flat electro-hydraulic directional control valve. A king valve cover is in the heart of the king valve and flat king valve core compacted by a spring lies in the cavity of axial of the king valve body; on the upper of king valve body there is a water inlet and a water outlet connected by the king valve's channel; in the king valve there is a sensitive cavity connected with electromagnetic ball valve by tunnels; a valve port damper installed at the valve entrance of electromagnetic ball valve matches with the sensitive cavity of king valve in order to control the flow velocity of fluid and reduce directional strike at the same time diverting fast. The invention adopt flat king valve core set on the packing force of the king valve cover and increase dramatically valve covers, adopt direct seal to realize zero leakage; divert fast and steadily through matching the sensitive cavity of king valve with the damper at the entrance of the electromagnetic ball valve; not change the structure of the king valve and only change structural form of electromagnetic ball valve in order to have different functions and fit to work under conditions of middle and high pressure water medium.

The invention provides a piston body. The piston body is cylindrical, a sealing body mounting groove is formed on the outer peripheral surface of the piston body along the circumferential direction, guide ring mounting grooves are respectively formed on two sides of the sealing body mounting groove along the circumferential direction, the piston body comprises a rigid framework and an elastic filling material, wherein the elastic filling material is arranged on the rigid framework, and the outer peripheral surface of the piston body which is arranged between the end surfaces of the piston body and the groove edges of the guide ring mounting groove is formed by the elastic filling material. The invention further provides a hydraulic cylinder.. According to the technical scheme disclosed by the invention, the elastic filling material is filled in the piston body, so that the weight of the piston body can be effectively reduced, using occasions of the hydraulic cylinder are optimized and the application limitations of the hydraulic cylinder are reduced; a framework part of the piston body is still of a rigid structure and forms a support for a sealing body part, so that the piston body can effectively ensure that the strength can meet the requirements; in addition, when a fault or unbalanced loading occurs in guide of the piston body, damages on a cylinder barrel can be effectively reduced; and furthermore, the impact can also be reduced during the commutation of the piston body.

The invention relates to a two-way quick-acting large-flow hydraulic power mechanism, which comprises an interconnected hydraulic actuator and a shaft distribution valve; the hydraulic actuator is a hydraulic cylinder with a double-piston structure, including a cylinder block, a front piston and a rear piston , the front piston and the rear piston are arranged on a piston rod, the cylinder body includes a front cylinder tube and a rear cylinder tube, the front piston is located in the front cylinder tube, and the front cylinder tube is divided into a first working chamber and a second working chamber, and the rear piston Located in the rear cylinder, the rear cylinder is divided into the third working chamber and the fourth working chamber; the shaft distribution valve includes the shaft distribution valve body stator and the shaft distribution valve core rotor, and the shaft distribution valve core rotor is provided with an oil supply channel and a return valve. The oil channel, the oil supply channel and the oil return channel are connected to the external pipeline, and the stator of the shaft distribution valve body and the rotor of the shaft distribution valve core are separated into four sealing areas by the sealing ring from top to bottom. Compared with the prior art, the present invention has the advantages of simplified hydraulic control logic, simple structure, convenient adjustment, convenient rapid reciprocating motion of the piston, and the like.

The invention relates to an integrated electromechanical servo mechanism. A redundant system is jointly composed of an EHA, an EMA and a clutch, wherein the EHA and the EMA are two electromechanical servo mechanisms different in principle. The clutch is used for achieving repeated switchover between the two servo mechanisms. Modular design is adopted in the EHA, the EMA and the clutch, and the respective functions of the EHA, the EMA and the clutch are independent. The EHA is of a symmetric cylinder structure, and a core part is hollow. The EMA is embedded in the EHA, and system paralleling ofthe two servo mechanisms is achieved. The integral self-lubricating and self-cleaning structure design is adopted in the EMA, lubricating and cleaning of an EMA lead screw, a bearing and other important components are achieved through a closed type hydraulic circulation system, and long-time work reliability of the servo mechanisms is guaranteed.

A rocker structure and a bobbing mechanism of a pumping system, a pumping system, and an engineering machine. The rocker structure (13) comprises a first swinging part (131) and a second swinging part (132) arranged along a rotating axis direction of a rotating part (133). A left swinging valve oil cylinder (11) and a right swinging valve oil cylinder (12) are respectively connected to the first swinging part (131) and the second swinging part (132), so that the left and right swinging valve oil cylinders (11, 12) can be arranged in two different vertical planes, thus flexibly arranging the components of the bobbing mechanism. Therefore, the kinetic moment of the bobbing mechanism during the swinging process is reasonably distributed; the moment value of the rocker structure (13) gradually decreases from the starting to the termination, thereby preventing the bobbing mechanism from becoming incapable of swinging and reducing the reversing impact force; the impact on a distribution valve and the like is reduced; the vibration of the bobbing mechanism, the distribution valve, and the pumping system is alleviated; the wearing of the parts is reduced and the service life of the parts is prolonged.

A cabin door opening and closing hydraulic control system of an underwater vehicle mainly comprises an oil tank, a thermometer, a liquid level meter, a heater, an air filter, a hydraulic pump, a coupler, a motor, a one-way valve, overflow valves, two-position and two-way electromagnetic reversing valves, a pressure relay, a fine filter, a pressure gauge, an energy accumulator, servo valves, a return oil filter, a cooler, pressure sensors, a three-position and four-way electromagnetic reversing valve, hydraulic one-way valves, non-symmetric hydraulic cylinders, check valves, displacement sensors, a controller, servo amplifiers and the like. The cabin door opening and closing hydraulic control system is high in responding speed, and can achieve automatic operation of opening and closing a cabin door of the underwater vehicle. Reversing impact can be lowered, and system stability is improved. Displacement of piston rods of the hydraulic cylinders can be precisely controlled, and the precision of the system is improved. The demand for positioning and locking in the opening and closing process of the cabin door is met, and the safety of the system is improved.

The invention discloses a vehicle steer-by-wire steering wheel device, aiming at accurately detecting the rotating angle of a steering wheel, and providing adjustable and proper road feel and rotating number of turns which can change the working mode under different working conditions and adjusts the steering wheel to complete all wheel steering for a driver. A motor is fixedly connected with a box; the output shaft of the motor is fixedly connected with the lower end of a third gear shaft through a coupler; gears of the third gear shaft are in mesh transmission and matched mounting with gears of a second gear shaft; gears of the third gear shaft are in mesh transmission and matched connection with gears of a first gear shaft; gears are in mesh transmission and matched mounting with gears of a fourth gear shaft; an angle displacement sensor is fixedly connected with the upper end of a first transmission shaft; a transmission nut is in transmission and matched mounting with the thread part of the first transmission shaft; the shell of an electromagnet is fixedly connected with the box; and protecting plates at the two sides of a check block supporting seat are in movable fit and mounting with the two outer side walls of a travel check baffle. The vehicle steer-by-wire steering wheel device is suitable for being used as a steer-by-wire steering wheel of a vehicle.

The invention discloses a mechanical feedback type adjustable speed self-reversing gas booster cylinder, which includes a hydraulic reversing valve and a terminal displacement feedback mechanism. The movement of the rod is transmitted to the spool of the hydraulic reversing valve through the feedback connecting rod, so that the spool moves correspondingly, switches the internal flow path, and realizes the self-reversing of the gas booster cylinder; by adjusting the position of the fulcrum of the feedback connecting rod, the feedback coefficient is changed To change the maximum displacement and movement speed of the reversing valve spool, thereby adjusting the reversing speed of the booster cylinder. The mechanical feedback type adjustable speed self-reversing gas booster cylinder provided by the present invention, compared with the electronically controlled reversing booster cylinder, does not need to use an electromagnetic reversing valve, which eliminates the risk of electric sparks igniting the working gas, and is especially suitable for For the pressurized delivery of flammable and explosive gases such as natural gas, it can significantly improve the safety of the gas booster cylinder, reduce the reversing impact of the gas booster cylinder, thereby weakening the vibration and noise of the gas booster cylinder.

A mold conveying platform comprises a support, a second belt wheel, a transverse driving motor, a longitudinal driving motor, a jacking device, sliding rods, a fifth belt wheel and a control box, wherein the upper portion of the support is provided with a frame defined by supporting plates, a transverse roller support and a longitudinal roller support are arranged in the frame, the two ends in the transverse roller support are correspondingly provided with two eccentric hole pairs, the two ends of the longitudinal roller support are correspondingly provided with two eccentric shaft hole pairs, the eccentric hole pairs of the transverse roller support correspond to the eccentric shaft hole pairs of the longitudinal roller support respectively, the eccentric hole pairs of the transverse roller support and the corresponding eccentric shaft hole pairs of the longitudinal roller support are connected through conversion wheels, push rods are arranged at the bottoms of the conversion wheels, the bottoms of the push rods are connected to the sliding rods in a sliding mode, one or more transverse driving wheel sets are arranged on the two sides of the transverse roller support correspondingly, one or more longitudinal driving wheel sets are arranged in the longitudinal roller support, and the transverse driving motor, the longitudinal driving motor and the jacking device are all electrically connected with the control box. The conveying efficiency is high.

The invention discloses a full-automatic knitting machine. The machine comprises a machine head, a main control processor and a man-machine interface part which are matched with one another, wherein an output part and an input part are connected outside the main control processor; driving software is embedded into the main control processor and drives the output part, the input part and the man-machine interface part to run respectively; and the man-machine interface part comprises a display and keys. Due to the design of a unique frequency converter, the machine runs stably and reliably; speed sensor-free vector technology is adopted, so that high control accuracy is achieved; six weaving speeds can be selected according to different raw materials and different weaving widths and the machine can decelerate and reverse automatically when the machine head returns, so that the machine has the characteristic of small reversing impact and runs more stably and reliably; totally-loop-lockedmachine head position control is realized by a photoelectric encoder; and an automatic narrowing system which can narrow apparently and secretly consists of machinery, a matched motor, a control circuit and software.