85results about How to "Modular structure" patented technology

A terminal block for conductively coupling multiple pairs of electrical wires includes a deadfront cover mounted onto a non-conductive base so as to define multiple pairs of wire receiving receptacles, each pair of wire receiving receptacles being electrically connected together via a conductive bus bar. As one feature of the present invention, a conductive shunt can be disposed by means of a manually operable shunt switch to selectively contact all of the bus bars in order to discharge any current present thereon. As another feature of the present invention, a plurality of finger-safe captive screw assemblies are retained within the cover, each captive screw assembly including a screw which can be driven into a threaded bore formed in one end of a corresponding bus bar. As yet another feature of the present invention, multiple pairs of interchangeable end caps can be removably snap-fit mounted on the base to enable the terminal block to be retained onto a wide variety of different surfaces. As yet still another feature of the present invention, a DIN rail lock is retained between each end cap and the base and includes one or more sharpened teeth which can be driven into the surface of the DIN rail to lock the terminal block in place.

A truck mounted attenuator (TMA) is constructed to minimize length during use in a horizontal position and height in a vertical transport position, as well as to minimize wind resistance and buffeting at highway speeds. A modular construction is employed, so that only damaged portions of the TMA can be removed and replaced in the field after a vehicle impact. The TMA comprises a plurality of outwardly curved tubular structural members which are designed to buckle upon application to the TMA of forces resulting from vehicular impact. The rigid tubes buckle at a high initial force, then proceed to crush at a lower force once the sides have buckled outwardly sufficiently to protect vehicle occupants during the critical first two feet of travel after impact. This design also provides increased protection for errant vehicles which impact the TMA device from an angle (i.e. “coffin corner” impact).

The invention provides a special nacelle type forest fire extinguishing bomb throwing device for a helicopter. The device consists of a ground bracket and an aerial hanging part; the ground bracket is a detachable member assembly, and mainly comprises a supporting flat plate, a supporting seat and bracket legs; and the aerial hanging part is formed by assembling smallest assembly units through a hanger beam and a fixed hanging hoisting ring, wherein the hanger beam is a hanging bearing beam, the fixed hanging hoisting ring is a member formed by fixedly connecting a fixed buckling plate and a nut hoisting ring together, and the smallest assembly units and an upper hitch beam are fixedly connected together by the fixed hanging hoisting ring through U-shaped bolts. The device is mainly applied in the occasions of hanging and transporting a forest fire extinguishing bomb and throwing the forest fire extinguishing bomb over the fire scene when the helicopter is used for forest fire extinguishment. The device has modularized structural function and simple structure, and is convenient to assemble and maintain.

The invention relates to a stator self-excitation synchronous motor with double cage barrier rotors and a control method thereof. The stator self-excitation synchronous motor is characterized in that an inner rotor and an outer rotor are positioned on inner and outer sides of a stator respectively; three-phase symmetry power windings and three-phase symmetry control windings are arranged in grooves on inner and outer surfaces of a stator; the rotors are spliced on the side which is close to the stator along the peripheral direction by using the same cage barrier rotor modules to form a rotor with a salient pole; each cage barrier rotor module is connected with a sleeve by positioning grooves and is provided with a plurality of trapezoid grooves; short-circuit cage bars are put into the trapezoid grooves; a stepped breach is formed in the joint of the adjacent cage barrier rotor modules; and after the adjacent modules are spliced, a public trapezoid groove is formed in the joint of the adjacent modules, the depth of a gap at the bottom of the groove reaches the surface of the sleeve, and public cage bars are put into the grooves. The invention aims to provide the stator self-excitation synchronous motor which is convenient to manufacture, can realize the brushless self-excitation of the stator, is high in power density and steady and dynamic properties and is provided with the double cage barrier rotors.

The invention belongs to the technical field of film material preparation and particularly relates to a device and method for preparing a combined film material warehouse. The device disclosed by the invention is composed of a combined pulse laser coating machine, a laser, a computer, a compound molecular pump and a double-stage rotary vane pump, wherein the combined pulse laser coating machine is composed of an RHEED (Reflection High-Energy Electron Diffraction) electronic gun, a pre-pumping pipeline, a stepping motor, a target selection swing mechanism, an RHEED fluorescent screen, a CCD (Charge Coupled Device) image sensor, a laser window, a substrate frame, a mask frame, a servo motor and a vacuum chamber, wherein the target selection swing mechanism is used for controlling target switching. A method provided by the invention comprises the steps of designing a mask with a corresponding structure according to a deposition film, and precisely and controllably depositing a multi-element component film warehouse through the combined pulse laser coating machine. The device disclosed by the invention is simple and convenient to operate, modularized in structure, convenient to maintain, capable of filling up the blank of the device for depositing the film material warehouse at high controllability at present and providing a novel feasible method for preparing the film material warehouse and wide in application prospect.

A truck mounted attenuator (TMA) is constructed to minimize length during use in a horizontal position and height in a vertical transport position, as well as to minimize wind resistance and buffeting at highway speeds. A modular construction is employed, so that only damaged portions of the TMA can be removed and replaced in the field after a vehicle impact. The TMA comprises a plurality of outwardly curved tubular structural members which are designed to buckle upon application to the TMA of forces resulting from vehicular impact. The rigid tubes buckle at a high initial force, then proceed to crush at a lower force once the sides have buckled outwardly sufficiently to protect vehicle occupants during the critical first two feet of travel after impact. This design also provides increased protection for errant vehicles which impact the TMA device from an angle (i.e. “coffin corner” impact).

The invention discloses a repulsive clamping static contact structure of low-voltage circuit breaker. The two ends of a locating shaft are fixed on a support, the middle of the locating shaft penetrates a static contact and pressure springs which are respectively arranged at the two sides of the static contact, the pressure spring is enveloped in the support and causes a connector row to compact the static contact, the free end of the static contact is arranged in a through slot on the bottom wall of the support, a tension spring is arranged in a first through slot of the support and corner approach thereof is fixed on a first boss in the first through slot, and the other corner approach of the tension spring penetrates the other through slot on the bottom wall of the support and is fixedly connected with the free end of the static contact. The static contact structure of the invention is modularized, clamping structure is adopted to realize electrical connection between static contact and inlet wire row, contact resistance is less, service life of static contact of circuit breaker can be prolonged, assembly is simple, and production cost is low.

The invention relates to the technical field of agricultural aviation, in particular to an ejection type seed sowing method and an ejection type seed sowing unmanned aerial vehicle applying the same, and aims to solve the problems that in the prior art, when seed sowing is conducted by an unmanned aerial vehicle, seed sowing is prone to be interfered by external airflow such as rotor wind, seed sowing is inaccurate, and the seed sowing requirement of line forming and hole forming cannot be well met. The invention provides the sowing method of the ejection type sowing unmanned aerial vehicle. The sowing method comprises the steps of parameter calibration; centralized seed supply; seed distribution by a seed distributor; and ejection type seed sowing. The invention further provides the ejection type seed sowing unmanned aerial vehicle applied to the ejection type seed sowing method.

The invention relates to a stator double-winding alternating-current motor with double cage barrier rotors. The stator double-winding alternating-current motor is characterized in that an inner rotor and an outer rotor of the motor are positioned on inner and outer sides of a stator respectively; three-phase symmetry power windings and three-phase symmetry control windings are arranged on the inner and outer sides of the stator; the inner rotor and the outer rotor are spliced along the peripheral direction by using the same cage barrier rotor modules to form a rotor with a salient pole; each cage barrier rotor module is connected with a sleeve by positioning grooves and is provided with a plurality of radial trapezoid grooves; short-circuit cage bars are put into the grooves; a stepped breach is formed in the joint of the adjacent cage barrier rotor modules; and after the adjacent modules are spliced, a public trapezoid groove is formed in the joint of the adjacent modules, a gap at the bottom of the groove reaches the surface of the sleeve, and public cage bars are put into the grooves. The invention aims to provide the stator double-winding alternating-current motor which is convenient to manufacture, can maximize the coupling capacity of the power windings and the control windings on two sides of the stator, is high in power density and dynamic property and is provided with the double cage barrier rotors.

The invention, which belongs to the field of electrified rail transit, relates to a dynamic simulation device for the track potential and stray current of a direct-current traction system. The dynamicsimulation device comprises a train running unit, a head end unit, an expansion unit and a grounding unit. According to the invention, track potentials and stray currents of the direct-current traction system are simulated dynamically by using a power electronic device when a train is on different operating conditions and stray current and track potential monitoring points are provided. Dynamic simulation of track potentials and stray currents of the direct-current traction power supply system under various grounding modes like a direct negative electrode grounding mode, a suspending grounding mode or a grounding mode after serial diode connection is realized. The dynamic simulation device has advantages of low cost and high simulation degree; an experimental debugging platform can be provided for the track potential and stray current suppressing device. The device has the broad application prospect and great economic value and has the important significance in controlling and preventing the track potentials and stray currents in the direct-current traction power supply system.

A bag and cage filter assembly for filtering particulates out of a stream of gas, which includes a plurality of elongated filter bag sections with a support cage, The bag sections are fastened together, as may be the cage sections.

Overspray collection apparatus comprises an extraction duct (54) between two sloped floors (50, 52) with unobstructed inlet slots (88, 90) on either side thereof. The extraction duct (54) comprises two moveable panels (56, 58) pivotally mounted to the sloped floors (50, 52). Each moveable panel (56, 58) pivots about an axis that is offset from a lower portion of the moveable panel and a lower portion of the sloped floor. In another embodiment, the pivotal mount comprises an offset hinge. The overspray extraction duct (54) comprises a duct floor (60) and an air diffuser assembly (100) that extends at least partially across the duct floor. The air diffuser assembly (100) receives pressurized air and directs pressurized air into the extraction duct (54), whereby the pressurized air may be pulsed. The overspray extraction duct (54) comprises a suction hood (62) that includes moveable panels (56, 58). Optional actuators may apply a force impulse to one or more of the moveable panels (56, 58), and/or to open and close the suction hood (62) automatically.