106 results about "Dead centre" patented technology

An internal combustion engine, system includes an internal combustion engine for combustion of gaseous fuel and having a combustion chamber at least partially delimited by a cylinder; a reciprocating piston moveable within said cylinder between a bottom dead centre (BDC) and a top dead centre (TDC), The reciprocating piston has a piston top end comprising a piston bowl intended to form part of the combustion chamber. A controllable fuel injector is arranged to inject gaseous fuel into the combustion chamber and towards the piston bowl. A controller controls the fuel injector to inject at least one gaseous fuel jet toward a bottom surface of the piston bowl during a fuel injection period occurring prior to an ignition event of the gaseous fuel.

The utility model discloses a sinusoidal breathing waveform simulation device, including a cylinder, a slide, a cam mechanism and a driving mechanism, wherein the cylinder includes an air inlet and an air outlet for connecting a ventilator, the slide is connected to the piston rod of the cylinder; the cam mechanism is connected to the slide, and the cam mechanism drives the slide to move back and forth to drive the piston rod to move back and forth; the driving mechanism is connected to the cam mechanism in a transmission manner to drive the cam mechanism to rotate. The sinusoidal breathing waveform simulation device disclosed in the utility model embodiment has a simple structure and is easy to operate. The cam mechanism and the slide are matched to drive the piston rod to move back and forth. Compared with the crank rocker mechanism, the dead point is eliminated, and the stability and reliability of the device are improved.

The present invention relates to a press (1) comprising a press frame (2) which has at least four ram guides (3) on which a ram (4) is guided via guides. The ram (4) is driven by means of an eccentric shaft (16) and at least two connecting rods (5, 6), each of the connecting rods (5, 6) being connected to the ram (4) via a ball screw (7), and each of the ball screws (7) having a spindle adjustment mechanism with drives (8) that can vary the length of the connecting rods. According to the invention, at least three ram guides (3) are each provided with a displacement measuring system for detecting the distance (x, y) of the ram (4) from the press table (9), wherein an evaluation unit compares the measured distances (x, y) with one another and thus detects any tilting of the ram (4) at the bottom dead centre. Depending on this tilting, the drives (8) of the spindle adjustment mechanisms are controlled so that the length of the connecting rods (5, 6) is adjusted so as to compensate for or reduce the tilting of the ram (4) at the bottom dead centre in subsequent strokes. The present invention also relates to a method for reducing ram tilting in a press (1).

A vaned hydraulic pump / hydraulic motor has a housing (1) and an impeller (2) which has vanes (3) rigidly fastened thereto or which is provided in the form of a single one-piece part. Situated between the vanes (3), in the body of the impeller (2), are radial channels (4) with reciprocally movable pistons (5) disposed therein. The pistons (5) are movably fastened via rods (6) to a common hub (7), and the axis of rotation of the hub (7) is radially offset from the axis of rotation of the impeller (2). The hub (7) is coupled to the impeller (2) by a universal joint (10) such as to be capable of rotating together with and at the same speed as the impeller. In the body of each piston (5) there is a cavity (5a) which is capable of receiving a hydraulic fluid and which has a compressible element (5b) mounted therein that is variable in volume under the influence of excess pressure arising as the piston (5) passes through top and bottom dead centre.

The present invention provides a single-phase permanent magnet motor and a vacuum cleaner having the same. The single-phase permanent magnet motor includes a first type of stator teeth; a second type of stator teeth, the first type of stator teeth and the second type of stator teeth are arranged to form an accommodating cavity for accommodating a rotor portion; a gradient air gap thickness is formed between one of the first type of stator teeth and the second type of stator teeth and the rotor portion, and a uniform air gap thickness is formed between the other of the first type of stator teeth and the second type of stator teeth and the rotor portion. By providing two types of stator tooth structures and forming different air gap structures between the two types of stator teeth and the rotor portion, the electromagnetic torque and the cogging torque of the motor are staggered, thereby solving the problem of the starting dead point of the single-phase motor. Compared with a simple asymmetric tooth structure, this structure can greatly improve the starting ability of the motor, reduce the starting current of the motor, and eliminate the problem of the dead point of the motor starting in the prior art.

The utility model relates to an internal eccentric swing arm driving mechanism suitable for large feeding quantity. The internal eccentric swing arm driving mechanism comprises a rotating shaft, an internal eccentric wheel, a bearing and a swing arm, the inner eccentric wheel is of a wheel body structure with the outer surface being a round face and provided with an inner input hole, the inner input hole is eccentrically formed, and the output end of the rotating shaft is matched with the inner input hole in an inserted mode and forms limiting fit in the circumferential direction. A bearing installation hole is formed in the power input end of the swing arm, the bearing is installed in the bearing installation hole, and the inner ring face of the bearing is in interference fit with the outer surface of the inner eccentric cam. The power input end of the swing arm is directly and rotationally connected to the outer circle face of the inner eccentric wheel through the bearing, the swing arm is directly driven to move through movement of the outer circle face of the inner eccentric wheel, the problem that dead points appear in the movement process of an existing outer eccentric wheel is solved, good movement stability is achieved, and the transmission efficiency is high. The large feeding amount requirement is well met, in addition, the compact design of the mechanism is achieved, and the occupied space of the mechanism is reduced.

The utility model relates to the technical field of bipolar plate press machines, in particular to a dynamic error control and compensation mechanism of a bipolar plate press machine, which comprises a main servo motor direct drive transmission gear shaft and a driven eccentric gear, a connecting rod mechanism adopts a toggle rod type structure and comprises a connecting rod, a corner bracket and a lower connecting rod, and the lower connecting rod is connected with a sliding block adjusting screw rod. A sliding block adjusting servo motor drives a worm and a worm gear transmission mechanism, an adjusting nut structure is arranged in a worm gear and forms a connecting pair with an adjusting screw rod, the worm gear rotates to drive the sliding block adjusting screw rod to move up and down so as to adjust the die height of the sliding block, and the sliding block is provided with an inductance type linear displacement sensor. The main servo motor and the sliding block adjusting servo motor are connected with the displacement sensor through the PLC, the mold closing speed and the mold closing position of the mold are monitored and accurately controlled in real time, high-precision adjustment of mold closing of the mold is achieved, and the position of a bottom dead center can be accurately controlled and compensated in real time.

A low-pressure module suitable for large-capacity flow air turbine relates to the field of compressed air energy storage. The invention comprises a low-pressure outer cylinder, a low-pressure inner cylinder, a bearing box, a gas seal assembly and a corrugated joint. The inner and outer cylinders adopt a horizontal middle-embedded structure and are centered by three sets of adjusting shims. The low-pressure outer cylinder and the inner cylinder are provided with symmetric tangential double air inlets, cooperate with the bottom exhaust structure, and the size of a single air inlet is controllable, the flow field is uniform, and the pressure loss is small. The inner and outer cylinders are flexibly connected by the corrugated joint to absorb the thermal expansion difference; the outer cylinder is supported by the gravity of the base frame and provided with an anchor plate to form an expansion dead point. The inner cylinder adopts an integrated cast flow guide ring, the volute is provided with a flow guide rib plate, and the module adopts 4-stage thrust self-balancing blades. The invention solves the problems of large cylinder, poor sealing strength, and unstable shaft system caused by single air inlet under super large flow, has the advantages of high aerodynamic efficiency, good strength and rigidity, stable operation, and low cost, and is suitable for 350MW-660MW air turbine.

An engaging device of a Mass-Interconnect includes an interchangeable test adapter (ITA) and a locking mechanism. The locking mechanism includes a slide movable between an engaged position and a disengaged position, a dual cam including a first cam arm and a second cam arm respectively configured to contact a first slide leg and a second slide leg to drive the slide between the engaged and disengaged positions, and plurality of contact pads disposed on the slide at regions engaged by the dual cam, the contact pads being made of a resilient polymeric material. The contact pads provide elastic compressibility that enables the receiver and ITA to achieve a substantially zero-gap condition at their mating surfaces while the locking mechanism advances into an over-dead-center locked state.

The breathing waveform simulation device disclosed in the utility model includes: a cylinder, the cylinder includes an air inlet and outlet for connecting a ventilator; a screw nut transmission mechanism, the piston rod of the cylinder is connected to the transmission nut of the screw nut transmission mechanism, and the screw of the screw nut transmission mechanism is rotationally connected to the cylinder; a driving mechanism, the driving mechanism is transmission-connected to the screw nut transmission mechanism; a guide mechanism, the guide mechanism is connected to the screw nut transmission mechanism through the transmission nut, and is used to prevent the piston rod from rotating. The breathing waveform simulation device disclosed in the embodiment of the utility model has a simple structure and is easy to operate. The screw nut transmission mechanism is used to drive the piston rod to move back and forth. Compared with the crank rocker mechanism, the dead point is eliminated, and the stability and reliability of the device are improved.

The present invention relates to an alternative two-stroke reciprocating internal combustion engine and power system thereof which eliminates the intake and compression phases of four-stroke Otto engines, and injects the fuel and the oxidising agent at high pressure directly into the combustion chamber or a prechamber at approximately the moment when the piston is at the top dead centre (TDC), using oxygen and / or air as the oxidising agent and hydrogen-based fuels, synthetic fuels, biofuels, alcohols, natural gas and mixtures thereof. At the same time, a spark is applied or combustion is produced by self-ignition, and expansion occurs until the piston reaches the bottom dead centre (BDC). The piston then starts to rise, the mechanically or electrically actuated exhaust valve opens and exhaust is discharged until the TDC is reached again, thereby repeating the cycle.

The utility model provides a bicycle lock pedal unlocked through electric control, which belongs to the technical field of bicycles and comprises a main frame, a mechanical clamp arm, an electric control clamp arm, a force adjusting knob, a spring, a force adjusting gasket, a steering engine, a rudder sheet, a connecting rod, a bearing, a dead point limiting arm, a first supporting shaft, a second supporting shaft, a circuit board, a lock catch and a wireless key. The mechanical clamp arm and the electric control clamp arm are both provided with grooves and jointly clamp a lock catch installed on a lock shoe, and locking of the lock shoe is completed. The mechanical clamp arm abuts against the clamp arm spring limiting block for position limiting. The electric control clamp arm abuts against a leaf spring on the main frame, meanwhile, the electric control clamp arm abuts against the bearing, the bearing is rotationally installed on the dead point limiting arm, when the dead point limiting arm and the electric control clamp arm are located at the dead point position, the electric control clamp arm cannot rotate, and after the dead point state is relieved, the electric control clamp arm rotates under the elastic force effect of the leaf spring, and unlocking is completed. The bicycle lock pedal capable of being unlocked through electric control solves the safety problem caused by the fact that an existing lock pedal is not easy to unlock.

The present invention discloses a gear continuously variable transmission system with a dual transmission structure, which is applied to a bicycle, and includes a power input component, a speed regulating component, a transmission component, a clutch component and a power output component, wherein: there are two transmission components, the two transmission components move synchronously, the two transmission components are respectively used to connect the power input component and the clutch component for power transmission, and the speed regulating component is used to change the transmission ratio of the transmission component, so that the speed of the power input end of the power input component is transmitted to the power output end of the power output component through the transmission component and the clutch component at a certain speed ratio. By setting two transmission components, and the two transmission components are respectively used to connect the power input component and the clutch component for power transmission, the present invention overcomes the dead point problem of the single connecting rod compared to the single connecting rod transmission previously applied for, makes riding smoother, and improves riding comfort and riding efficiency.

The invention relates to a sensitive and self-adjusting detection system for inter-row hoes that comprises a motor (1) with a shaft (2), a sensing rod (3) joined to the shaft (2), and a sensor (5) that determines at least one of the following parameters: speed, rotation, angular position or torque of the shaft (2). The system also includes a control element (10) for varying the position of the sensing rod (3), and a control unit (6) that receives signals from the sensor (5), from the control element (10) and, optionally, from other sensors (8, 9). The control unit (6) processes the signals and allows automatic regulation of the position, sensitivity and dead centre of the sensing rod (3), improving weeding precision and adapting operation to the working conditions of the terrain.

The utility model belongs to the technical field of instruments and meters, and relates to a pneumatic motor actuating mechanism which comprises a box body, a driving gear set and a transmission output assembly are rotatably arranged in the box body, and the driving gear set can drive the transmission output assembly. The box body is provided with a pneumatic module and a manual assembly in a matched mode, and the pneumatic module and the manual assembly can respectively drive the driving gear set to rotate. A manual and automatic clutch is arranged on a box cover of the box body and can adjust the axial position of a first-stage driven bevel gear of the driving gear set so that a first driven bevel gear constructed at the upper end of the first-stage driven bevel gear can be meshed with a first-stage driving bevel gear connected with the output end of the pneumatic module. The actuating mechanism is simple and reasonable in structure, safe and reliable to operate and capable of improving undesirable phenomena such as unsmooth action or action dead points; clutch switching is achieved through the manual and automatic clutch, and automatic operation and manual operation do not affect each other.

A transmission for a human-powered vehicle. The transmission has a primary system that includes a transmission case, a crankshaft with cog, a pair of receiver cranks, a pair of connecting rods, a pair of oscillating driver cranks, and a pair of pedals. A secondary biasing system is engaged with the primary system to provide a favorable torque around dead centers of the primary system. The transmission 150 may be configured to transmit power by driveshaft, chain, or belt to drive a wheel or propeller. In a watercraft application, an operator alternatingly applies force to a pair of pedals while seated close to the floor of a kayak 145. Power from the transmission is transmitted through a steerable lower gear case 134 via a propeller to propel the craft. The operator maneuvers the craft by means of a control lever 135 operably connected to the lower gear case by cables 136.

An internal combustion engine (10) comprising a cylinder head (11), a piston (20) and an engine block (12). The piston (20) is slideably mounted in a cylinder bore (16) in the engine block (12) or a cylinder liner (14) therein for reciprocating between a top dead centre (TDC) at a top of the cylinder bore (16) and a bottom dead centre at a bottom of the cylinder bore (16). The cylinder bore (16) comprises a cylinder wall (15) and at least one pocket (40) is recessed into the cylinder wall (15) for controlling the flow of oil during reciprocation of the piston (20).

The invention relates to an internal combustion engine starting method for a reciprocating piston internal combustion engine having a crankshaft which is set in a rotary movement in a starting direction of rotation by a starter device for starting, and wherein at least one reciprocating piston of the reciprocating piston internal combustion engine is kinematically positively coupled to this crankshaft and is movable back and forth between a top dead centre and a bottom dead centre by means of a rotary movement of this crankshaft, wherein this internal combustion engine starting method comprises the following steps: - detecting a starting request to the reciprocating piston internal combustion engine - supplying the starter device with electrical starting current to drive the crankshaft in the starting direction of rotation - detecting the crankshaft speed, at least in a first crankshaft angle range - interrupting the starting current of the starter device, when the crankshaft speed falls below a crankshaft speed threshold value and thus - turning the crankshaft back against the starting direction of rotation to a starting angle range, this turning back being caused by a movement of the reciprocating piston in the direction from top dead centre to bottom dead centre, - supplying the starter device with electrical starting current and driving the crankshaft in the starting direction of rotation when the crankshaft has reached this starting angle range, - setting the internal combustion engine to fired operation.

The utility model discloses a protection mechanism for reducing the return stroke friction force of a slotting tool of a mechanism. The protection mechanism comprises a sliding block end shaft seat, a first-stage connecting rod, a second-stage connecting rod, a fixed end shaft seat, an elastic lifting pin, a first nitrogen cylinder and a connecting shaft, wherein the fixed end shaft seat is fixedly connected with the lower die body, one end of the fixed end shaft seat is hinged to one end of the second-stage connecting rod, the other end of the second-stage connecting rod is hinged to one end of the first-stage connecting rod, the other end of the first-stage connecting rod is hinged to one end of the sliding block end shaft seat, and the sliding block end shaft seat is connected with the pulley mechanism and moves in the horizontal direction; the lower dead center position of the protection mechanism is 0.5 mm below the horizontal line of the central shaft, and the first-stage connecting rod and the second-stage connecting rod form an included angle of a preset angle at the upper dead center position; the elastic lifting pin is installed on the lower die base, and the advanced nitrogen cylinder is installed on the floating slotting tool and moves along with the floating slotting tool. The problems that the slotting tool of the mechanism is abraded and the floating slotting tool is blocked in the return stroke can be effectively solved.

A boat (1) has a hull (2) and an apparatus (16) with an electric generator (18) for electric energy recovery; the apparatus (16) has a support (12), which is movable with respect to the hull (2) with a reciprocating motion along a trajectory (K), is coupled to the electric generator (18) so as to generate electric energy due to the movement between a top dead centre and a bottom dead centre along said trajectory (K) and carries a blade (10), arranged below the hull (2) so as to be permanently and completely arranged in the water during the use of the electric generator (18); the apparatus (16) has an actuator (14), which is operated by an electronic control unit (15) to vary an external configuration of the blade (10) and, hence, change a hydrodynamic lift or a hydrodynamic resistance along said trajectory (K) when the support (12) and the blade (10) reach the top and bottom dead centres during an oscillatory pitching movement of the hull (2).

The invention relates to a method of combusting a first liquid fuel and a second liquid fuel in an internal combustion piston engine, the first liquid fuel having a lower heating value than the second liquid fuel, wherein - a first liquid fuel is injected into a cylinder of the engine as a main fuel, which brings most of the energy into the process, so that the total amount of first liquid fuel delivered to the cylinder for one combustion stage is divided into at least two partial injections, wherein - the main injection of the first liquid fuel accounts for 70-95% of the total amount of the first liquid fuel, and - the start of the main injection occurs at the latest at 20°CA before the top dead centre position of the piston in the cylinder, - the pre-injection of the first liquid fuel accounts for 5-30% of the total amount of the first liquid fuel, and wherein - the start of the pre-injection occurs at 20-55°CA before the top dead centre position of the piston in the cylinder, and the pre-injection is formed by one injection event, and - a second liquid fuel is injected into the cylinder of the engine as a fuel assisting compression ignition, so that the start of the injection of the second liquid fuel occurs at 1-23°CA before the start of the injection of the main injection of the first liquid fuel.

The utility model discloses a stacked type balance valve which can prevent a double-acting executing element (such as a hydraulic oil cylinder and a hydraulic motor) from moving in an accelerated mode or moving out of control in the load direction when the double-acting executing element is provided with a suspended, pulled or moving load, namely the speed is not consistent with the input oil quantity (pump) (the oil cylinder is broken due to air suction). The load directions of the lifting equipment and the swinging equipment change positively and negatively; the swinging equipment swings over a dead point; as a side effect, when a reversing valve or a direction slide valve control loop leaks at a balance position, an oil cylinder piston can be prevented from accidentally disallowed displacement (two-way pressure maintaining) in the load direction. According to the utility model, the stacked intelligent module is designed, which is very convenient to overhaul, install and process problems. According to the utility model, the two sandwich valves can be quickly disassembled and assembled by adopting the mounting component and the connecting rod, so that the earlier-stage mounting, free combination and subsequent disassembly and maintenance are greatly facilitated.

The utility model relates to the technical field of axial plunger pumps, and particularly discloses a novel axial plunger pump vibration and noise reduction valve plate capable of preventing a cylinder body from overturning. An oil absorption waist-shaped groove and an oil discharge waist-shaped groove are formed in a valve plate circular ring on the front wall of a valve plate body and located on the left side and the right side of a shaft hole respectively; an upper dead point and a lower dead point are arranged at the positions, located at the top end and the bottom end of the flow distribution circular ring, of the front wall of the flow distribution plate body, oil suction damping grooves and first damping holes are formed between the bottom ends of the oil suction kidney-shaped grooves and the lower dead points, and the oil suction damping grooves communicate with the front portions of the bottom ends of the oil suction kidney-shaped grooves. A second damping hole, a third damping hole and a fourth damping hole are sequentially formed between the top end of the oil discharge kidney-shaped groove and the top dead center from left to right, and an oil discharge damping groove communicated with the oil discharge kidney-shaped groove is formed in the position, corresponding to the second damping hole, of the front wall of the valve plate body. The rear wall of the valve plate body is provided with an arc-shaped connecting groove for communicating the rear ends of the second damping hole, the third damping hole and the fourth damping hole with the kidney-shaped oil discharging groove, and an oil discharging groove is formed in the position, corresponding to the first damping hole, of the rear wall of the valve plate body in the radial direction; and pressure and flow pulsation generated in the flow distribution process are reduced, so that vibration and noise are reduced.

The utility model relates to the technical field of belts, and provides an eccentric counterweight type high-strength belt dynamic tension balancing device which comprises a rectangular plate, an adjusting rod fixedly installed at the other end of a first spiral spring, a second spiral spring fixedly installed at the other end of the first spiral spring, and a third spiral spring fixedly installed at the other end of the second spiral spring. The adjusting rod is movably embedded in the cylindrical groove; the U-shaped plate is fixedly mounted at the top of the adjusting rod, and a positioning wheel is movably embedded in the U-shaped plate; the two electric push rods are started at the same time, the two sets of positioning rods are pushed to slide in the through holes through the connecting plates, the positioning rods drive the annular plates to slide on the outer surfaces of the positioning wheels through the connecting blocks, the two annular plates move oppositely or oppositely under the action of the electric push rods, adjustment is conducted according to the size of the belt, and the belt is positioned. The belt is prevented from sliding left and right on the outer surface of the positioning wheel, friction of the belt is reduced, and the service life of the belt is prolonged.

The invention provides a direct current permanent magnet brushless motor control circuit. Belongs to the field of motor control circuits. The zero-cross detection and motion detection circuit is used for performing zero-cross detection and motion detection; the phase comparison circuit is used for controlling the torque increase of the motor according to the output state; the auxiliary positioning control circuit starts the logic circuit and is used for enabling the rotor to leave a dead point rotor of the winding A; a rotor positioning control circuit for forward positioning current is formed in the winding A; the H switch power supply control circuit is used for providing a power supply with current limiting capability for the H switch circuit; the commutation logic circuit is used for generating control signals for driving the winding A and the winding B; and the H switching circuit is used for converting the control signal into a driving signal so as to finish torque adding of the motor rotor. Through the arrangement, the motor efficiency and the motor control precision can be improved.

An anti-springback operating mechanism comprises a main shaft rotatably arranged on a side plate, the main shaft is used for being connected with a moving contact and can rotate between a closing position and an opening position, the anti-springback operating mechanism further comprises a rotatably arranged blocking piece, and the main shaft is provided with a stop piece rotating along with the main shaft. The blocking piece is provided with at least one blocking part and at least one avoiding part, the blocking piece is provided with an impacting structure and a pushing structure, when the main shaft rotates from the closing position to the opening position, the pushing structure of the blocking piece is driven to push the blocking piece to rotate to enable the blocking part to rotate to an anti-springback position, and when the blocking part is located at the anti-springback position, the pushing structure of the blocking piece is driven to push the blocking part to rotate to enable the blocking part to rotate to the anti-springback position. The blocking part is located on the rotation path of the impact structure when the main shaft rotates from the opening position to the closing position, the blocking part is located between the rotation center of the blocking part and the impact structure, and when the main shaft rebounds during opening, the impact structure abuts against the blocking part to form a dead point so as to prevent the main shaft from rebounding. And inertia is not needed to prevent the main shaft from rebounding.

This invention provides an integrated mechanism for the deployment and retraction of a scissor lift device at its dead point, relating to the field of combined aerospace vehicle technology. It includes a drive unit and a dead-point thrust mechanism, with the drive unit and the dead-point thrust mechanism being drive-driven. The drive unit can drive the dead-point thrust mechanism to lift the rod at the dead point position upwards. The support portion of the dead-point thrust mechanism can slide to accommodate the horizontal movement of the rod, and the support portion also supports the retracted rod of the scissor lift device. The solution provided by this invention offers another driving force when the directions of the scissor lift rod and the driving force coincide. This driving force helps the scissor lift rod cross the dead point position, ensuring normal operation of the scissor lift device, and also supports the retracted rod of the scissor lift device.

An internal combustion engine 10 comprising a cylinder head 11, a piston 20 and an engine block 12; The piston 20 is slideably mounted in a cylinder bore 16 in the engine block 12 or a cylinder liner 14 therein for reciprocating between a top dead centre (TDC) at a top of the cylinder bore 16 and a bottom dead centre at a bottom of the cylinder bore 16; The cylinder bore 16 comprises a cylinder wall 15 and at least one pocket 40 is recessed into the cylinder wall 15 for controlling the flow of oil during reciprocation of the piston 20. The invention aims to reduce unwanted emissions and engine wear due to unwanted combustion of oil.

The invention discloses a forming machine sliding table power driving method which comprises the steps that an eccentric crankshaft is adopted, the eccentric crankshaft serves as a driving shaft, and a toggle type connecting rod mechanism composed of a push rod, a connecting rod and a rocker is arranged on the eccentric crankshaft to push a sliding table to do linear reciprocating motion, so that the sliding table runs to a front dead point and enters a speed stable state. The toggle type connecting rod mechanism is adopted to drive the sliding table to do reciprocating linear motion, and compared with an original crank sliding block mechanism to drive the sliding table to move, the toggle mechanism has the advantages that the motion law of the toggle mechanism is more ideal, the quick-return characteristic is better, the return stroke time is about 1 / 2 of the forward stroke time, the speed fluctuation near a front dead point is small, and the speed fluctuation is small; the dwell time of the front dead point area is longer, and the impact stability is good; 2, the toggle type mechanism is more compact in structure, and larger sliding table stroke design parameters can be provided in the same design space;

The present invention relates to an operating mechanism for a switchgear, comprising: a rotatable output shaft (11) configured to perform a circuit breaking or closing operation of the switchgear by rotation; a rotatable energy storage rod (13) and a spring (4), wherein the energy storage rod (13) is configured to rotate by a motor (1) to drive the spring (4) to be compressed to store energy; and a rotatable drive rod (12) connected to the output shaft (11), rotatably connected to the energy storage rod (13) and freely rotatably connected to the spring (4) to allow ≤60° rotatability between the drive rod (12) and the spring (4) for performing a circuit breaking or closing operation of the switchgear, wherein the spring (4) is configured to release energy during at least one period of the circuit breaking and closing operation of the switchgear to rotate the drive rod (12) after passing through the dead position of the spring (4).