50results about How to "Snap-in" patented technology

The invention discloses a braking device for a motor driven mechanism. The braking device has a structure that includes a rotating shaft, a rotor core, electric brushes, a bearing, a commutator segment, a rear end cover, a housing, a stator winding, a stator core, a winding coil, an iron core, a coil, an armature, rollers I, an upper guide rail, a limit block, an upper brake pad, a blade, a connecting rod I, a lower brake pad, rollers II, a lower guide rail, a front end cover, a spring, a slotting, a baffle, a vertical plate, connecting rods II, and a hinge. The rear end cover is embedded to the rear end of the housing. The front end cover is arranged at the front end of the housing and connected with the housing through a bolt. The rotating shaft penetrates through the front end cover. The rotating shaft is arranged on the central axis of the housing. According to the invention, the braking device for the motor driven mechanism is capable of quickly braking the rotating shaft throughthe upper brake pad and the lower brake pad, with small energy loss and with no need to worry about the aging of the spring, the spring at the bottom of the lower brake pad enables the lower brake padto rise more quickly, and through the acceleration of the rising process, the rotating shaft can be quickly braked.

The invention discloses a two-dimensional vibroswitch device for a windmill generator, which comprises a shell, a sliding sleeve, a support seat, a swinging rod, a sliding rod and a pushing rod, wherein the swinging rod swings in the sliding sleeve; the sliding rod is arranged below the swinging rod through a spring seat and driven by the swinging rod to move up and down in the sliding sleeve; the pushing rod is driven by the sliding rod to move up and down in the support seat; the pushing rod is fixed with two contact springs and moving permanent magnets; and the bottom of an inner cavity of the support seat is fixed with fixed permanent magnets and two fixed contact terminals provided with conducting strips. The vibroswitch device has the advantages of compact structure and convenient assembly and use, and can realize quick and accurate actions without being driven by a power supply, so that the damage of the wind mill generator due to excess vibration of a tower is avoided.

The invention discloses a control method and device of an alternating current contactor. The control method comprises the following steps: collecting the coil voltage of the alternating current contactor; controlling a contact of the alternating current contactor to be closed when the coil voltage of the alternating current contactor is preset close voltage; controlling the contact of the alternating current contactor to be disconnected when the coil voltage of the alternating current contactor is zero voltage. By adopting the method and the device, the problems of contact close bounce of a contactor and arc discharge breaking of the alternating current contactor in the prior art are solved, and the condition that the alternating current contactor can realize rapid closing or disconnecting in the condition of contact failure is ensured.

The invention discloses an electronic type power-saving alternating current contactor which comprises an additional electronic unit and a general alternating current contactor body. The general alternating current contactor body is composed of normally closed contacts, normally open contacts, a movable iron core, a fixed iron core, a reset spring and a magnet exciting coil. The additional electronic unit is a four-port network and is provided with a first input port, a second input port, a first output port and a second output port, the first input port and the second input port are connected with the first end and the second end of an AC voltage respectively, the first output port and the second output port are connected with the first end and the second end of the magnet exciting coil respectively, a switch circuit and an energy storage circuit are arranged inside the additional electronic unit, one end of the switch circuit is connected with the first input port, the other end of the switch circuit is connected with the first output port and one end of the energy storage circuit, the other end of the energy storage circuit is connected with the second output port and the second input port, the switch circuit is composed of a gas discharge tube, and the energy storage circuit is composed of a capacitor.

The invention relates to a chain-sheet structure provided with double spaces. A limiting block is arranged at the adjacent position between an acting surface of a chain-sheet body and a first clamping face, and the height of the limiting block is larger than that of the acting surface; a lining is connected to each annular protrusion in an assembled mode, a hole is formed in each lining, and the maximum diameter of each hole is larger than that of the corresponding annular protrusion; two chain-sheet bodies can be assembled relatively, so that a first space is formed between the acting surfaces of the two chain-sheet bodies, the limiting block is used for narrowing the first space, and the linings move on combined parts in a limited mode for forming a second space. By means of the structure, the advantages of changing speed stably and fast and avoiding noise can be achieved.

The invention relates to the technical field of electromagnetic valve control, in particular to an automobile electromagnetic valve control circuit and a control method thereof. The automobile electromagnetic valve control circuit comprises a signal input module, a power source module, a control module, a driving module and a power amplification module. The signal input module is used for receiving action signals of electromagnetic valves and sending the action signals to the control module; the control module is used for controlling the power source module according to the time sequence to output different voltages so as to provide power for the electromagnetic valves and controlling the driving module to drive the corresponding electromagnetic valves to work; the power source module is used for converting the voltage of an automobile power source into corresponding voltage and outputting the power according to a control signal of the control module; and the driving module is used forbeing connected with the power amplification module according to the control signal of the control module; and the power amplification module is used for being connected with the electromagnetic valves and the power source module. An automobile electromagnetic valve control device is provided. High-speed response of the electromagnetic valves is achieved, the response time is greatly shortened, meanwhile the buffering technology is utilized, application to the occasion of high-speed adjustment is achieved, impact caused by high-speed action is reduced, and the noise is lowered.

The invention discloses a power-saving type alternating current contactor with a power-saving unit. The power-saving alternating current contactor with the power-saving unit is composed of a first voltage-controlled switching circuit, an energy-storing circuit and a second voltage-controlled switching circuit, and is characterized in that the power-saving type alternating current contactor with the power-saving unit is a network provided with four ports, the port N1 and the port N2 are input ports of the network, and the port P1 and the port P2 are output ports of the network; the input port N1 and the input port N2 are connected with the S1 end and the S2 end of the AC voltage respectively, and the output port P1 and the output port P2 are connected with the A1 end and the A2 end of the magnet exciting coil L of a traditional alternating current contactor respectively; the N1 end, the first voltage-controlled switching circuit, the energy-storing circuit, the second voltage-controlled switching circuit and the N2 end are sequentially connected in series, the P1 end is led from the connecting position of the first voltage-controlled switching circuit and the energy-storing circuit, and the P2 end is led from the connecting position of the energy-storing circuit and the second voltage-controlled switching circuit.

The invention discloses a guiding idler wheel set of a fork multistage gantry. The guiding idler wheel set is arranged between gantry inner channel steel and gantry outer channel steel and comprises amain idler wheel piece, a lateral idler wheel piece and an adjusting assembly, wherein the main idler wheel piece and the lateral idler wheel piece move up and down along the gantry inner channel steel, and one end of the adjusting assembly and the gantry outer channel steel are fixedly mounted. A lateral idler wheel seat and the adjusting assembly are connected through a thread. According to theguiding idler wheel set of the fork multistage gantry, annular abrasion-resistant rings are embedded into the outer circumferential faces of a main idler wheel and a lateral idler wheel, so that whenthe guiding idler wheel set is used, the abrasion-resistant ring of the main idler wheel makes contact with the inner side faces of two edge plates of the gantry inner channel steel, the abrasion-resistant ring of the lateral idler wheel makes contact with the inner side face of a middle plate of the gantry inner channel steel, the situation that the main idler wheel and the lateral idler wheel directly make contact with the gantry inner channel steel is avoided, thus the abrasion degree to the gantry channel steel and abrasion of the main idler wheel and the lateral idler wheel are reduced,and the service life of the guiding idler wheel set and the gantry channel steel is prolonged.

The invention discloses an easy-to-mount prefabricated wall body and a mounting method thereof. The prefabricated wall body includes wall panels, an insulation material, and a plurality of support keels, the plurality of support keels are vertically fixed between upper and lower floor slabs and arranged in the length direction of the prefabricated wall body, two wall panels are arranged on both sides of the support keels respectively, and the insulation material is sandwiched between the two wall panels; the support keels are provided with T-shaped chucks corresponding to the wall panels; thewall panels are provided with horizontal transverse keels, horizontally extending clamping grooves are formed in the horizontal keels, the chucks extend into the clamping grooves, and jack catches arearranged at notches of the clamping grooves. The mounting method mainly includes the steps that the support keels are fixed, the wall panel on one side is mounted, the insulation material is filled,and the wall panel on the other side is fixed. The invention relates to the field of construction, and provides the easy-to-install prefabricated wall body and the mounting method thereof. The problems of complex mounting and low efficiency can be overcome, the sound insulation and voice insulation performance of the prefabricated wall body can be ensured, and the construction efficiency can alsobe improved.

The invention discloses a pulse driving circuit for a high-voltage pull-down pulse generating device, which includes a driving circuit including a unipolar high-voltage DC power supply, a synchronous pulse signal source, a fast switching component, a driving pulse output terminal, and a unipolar high-voltage DC power supply passing through The series high-voltage resistance is connected with one end of the switch module of the fast switch part and the pulse output end, the other end of the switch circuit is grounded, and the synchronous pulse signal source is connected with the trigger module of the fast switch part to control the opening or closing of the switch module of the fast switch part; the present invention The sensitivity and resolution of the time-of-flight mass spectrometer are improved through the drive circuit, and the design is simple and the cost is reduced.

The invention provides a damping driving mechanism and a liquid-magnetic circuit breaker. The damping driving mechanism comprises a static iron core, a movable iron core, a driving part, a resetting spring and a coil, wherein the driving part is fixed on the movable iron core; the coil is wound around the static iron core and the movable iron core; when current of the coil is more than rated current, an attraction force between the static iron core and the movable iron core is more than a pre-tightening force of the resetting spring; the movable iron core moves toward the static iron core and the driving part moves along the movement of the iron core. The damping driving mechanism has the advantages that the iron cores in an oil damping device are ingeniously designed and an elastic force of the spring is overcome under the action of a magnetic field force; when the damping driving mechanism upward moves to a proper distance from the static iron core, the attraction force between two magnetic poles is greatly more than an acting force of the spring, so that the iron cores are rapidly attracted; meanwhile, the mechanism is triggered to move through the driving part.

The invention discloses an LED display screen module and an LED display screen, and relates to the field of display screens. The LED display screen module comprises a frame shell, the front surface ofthe frame shell is fixedly connected with a clamping mechanism, and the front surface of the frame shell is provided with a limiting mechanism. According to the scheme, shading cloth and a connectingmechanism are arranged, the shading cloth is pulled by pulling a first mounting shell and a second mounting shell open, then a sliding rod is rotated and inserted into a fixed shell, the sliding rodcan be clamped through two rubber blocks, the shading cloth is thus opened, the shading cloth can be used for shading light, so that the situation that when people use the LED display screen at nightor in dark light, other people are affected by light is avoided; and when the LED display screen is not used, the shading cloth is folded through opposite operation, and the first mounting shell and the second mounting shell can be quickly attracted together through two magnets, so that quick storage of the shading cloth is realized, and the practicability is greatly improved.

The invention relates to a power-saving and silencing alternating-current contactor, which comprises a power-saving unit and an alternating-current contactor, wherein the power-saving unit consists of a voltage control switch circuit composed of a transient voltage suppressor diode, an energy storage circuit composed of a capacitor and a rectifying and energy locking circuit composed of a diode and is a four-port network, input ports of the four-port network are connected with AC (Alternating Current) voltage, and output ports of the four-port network are connected with an excitation coil in the alternating-current contactor.