82results about How to "Easy and safe maintenance" patented technology

A horticulture light fixture having a secure glass aperture and glass retention frame that is swingably hinged to provide easy and safe maintenance of the fixture and helps facilitate cleaning of the glass. The hinge portion is constructed from sheet metal that is formed during the fabrication of the fixture. The method of construction eliminates the need to install a separate hinge saving manufacturing time and expense. In a preferred embodiment, the glass retention frame is constructed from a single continuous sheet of metal, that is punched or cut into desired dimension and shape, formed or folded to hold a flat piece of glass, and installed using common pins that provide rotational motion for swingably opening and closing of the glass simplifying maintenance of the horticulture light fixture.

An automatic sample analyzer includes: a pipette, a pipette driving device which moves the pipette to a sample vessel present in a predetermined position to cause the pipette to suck up a sample from the sample vessel, and then moves the pipette to an open vessel provided in another predetermined position to cause the pipette to discharge the sample into the open vessel, and an analyzing section for analyzing the discharged sample, the pipette driving device comprising a vertically movable main arm and an elongated guide arm cantilevered by the main arm and extending horizontally, the guide arm having a smaller flexural rigidity than the main arm, wherein the main arm vertically moves the pipette when the sample is to be sucked up from the sample vessel, and the guide arm guides the pipette to the open vessel and then vertically moves the pipette when the sample is to be discharged into the open vessel.

The invention discloses a control method and system for intelligent unmanned aerial vehicle patrol for a power line. The method includes the steps that after receiving an instruction, input by a user, of starting unmanned aerial vehicle operation, an unmanned aerial vehicle base server transmits the instruction of starting unmanned aerial vehicle operation to a hangar and an unmanned aerial vehicle; the hangar responds to the instruction of starting unmanned aerial vehicle operation, and a hangar door is opened; the unmanned aerial vehicle responds to the instruction of starting unmanned aerial vehicle operation, flies out of the hangar, determines the position of the unmanned aerial vehicle relative to a tower to be patrolled through a beacon and transmits shot visible images and infrared images of the portion to be patrolled to the unmanned aerial vehicle base server through the hangar; the unmanned aerial vehicle base server analyzes the visible images and infrared images of the portion to be patrolled to determine suspected defect points and transmits the suspected defect points and position information of the suspected defect points to a mobile terminal bound in advance. According to the technical scheme, the power line in a region poor in natural condition can be patrolled normally, and safety maintenance can be conducted on the power line better.

The present invention provides a wellhead hydraulic drive unit to operate various styles of downhole pumps, which is installed as an integral part of a wellhead thereby eliminating the need for a stuffing box. The wellhead hydraulic drive unit comprises a hollow hydraulic cylinder having a piston positioned therein, a hydraulic fluid supply attached to the hydraulic cylinder for raising the piston within the hydraulic cylinder, a hollow ram slideably received within the inner wall of the hydraulic cylinder and connected to the piston for reciprocation in response to the piston; and a production tube inserted through the ram for enabling well fluid to be discharged from the well.

The invention relates to a novel microelectronic device radiator which comprises a planar heat pipe being two or more through hole array flat plate structures arranged side by side and formed by extrusion or punching of metal materials and the equivalent diameters of through holes range from 0.2mm to 6mm. The through holes are filled with liquid working substance and two ends of the planar heat pipe are encapsulated in a sealing manner; an evaporation section of the planar heat pipe is in surface contact with a heating surface of a microelectronic device and a condensation section of the planar heat pipe eliminates heat through a heat elimination component. The novel microelectronic device radiator overcomes the defects of small contact area between the current round heat pipe and the heating surface of the microelectronic device, large equivalent resistance of heat conduction and complex manufacture technology, and has the advantages of high heat elimination efficiency and simple technology.

A wind power generator includes a pillar fixed on a base, a nacelle platform disposed on an upper end portion of the pillar, a service crane provided at a side of the nacelle platform, a generator assembly coupled to the nacelle platform, a rotor hub rotatably coupled to the generator assembly, and a plurality of blades coupled to the rotor hub and rotating the rotor hub. The rotor hub is provided at an outer circumference of a front end thereof with a plurality of first pulleys for guiding a case from a winch installed on the ground.

Provided are facilities for secure execution of an encrypted executable comprising an encrypted instruction. The secure execution includes obtaining the encrypted instruction, decrypting the encrypted instruction using a decryption key being maintained in a secure location within a processor, and storing the decrypted instruction to a secure storage for execution, where the decryption key remains in the secure location during the decrypting and the storing to facilitate maintaining security of the decryption key.

A jack structure for a clutch contains a main hydraulic cylinder to push a movable arm to move vertically, a holder including a support rod actuated by an auxiliary hydraulic cylinder of the movable arm to move vertically and horizontally relative to the holder, wherein the main hydraulic cylinder is a single acting hydraulic cylinder, the auxiliary cylinder is a double acting hydraulic cylinder, pipes of the main hydraulic cylinder communicate with an inlet tube of the auxiliary hydraulic cylinder; a valve seat includes a pump hole to draw hydraulic oil via a cylinder, an inlet connected with the inlet tube, an outlet coupled with an outlet tube of the auxiliary hydraulic cylinder, and a bore connected with an oil tank; a control post axially connected with the valve seat and includes plural grooves to selectively communicate with the pump hole, the inlet, the outlet, and the bore after rotation.

A peristaltic pump is provided that is configured to facilitate safe maintenance of the pump. The pump can comprise a pump body having a pump head and a head cover and a safety switch mechanism. The safety switch mechanism can comprise one or more sensors that allow the pump to detect whether the head cover is in an open or closed position. When the pump is powered-on, the pump can be configured to enter a maintenance mode when the safety switch detects that the head cover is in the open position.

The invention provides a vertical wind power generator, comprising a pylon, an electric generator and more than two blades, wherein the pylon is hollow, and mor than one generating set is fixed on the pylon; the generating set is composed of a first flange and a second flange fixed on the pylon, a first bearing block, a first bearing, a first electric generator, a first exciter, an electric generator center post, a second bearing, a second bearing block, a second lower flange and a second upper flange; a crane is fixed at the top of the pylon and an elevator is fixed in the pylon. The vertical wind power generator of the invention has advantages of simple and safe structure, small accommodation area, low cost and high utilization ratio of wind energy, and the structure is convenient to maintenance and detection.

The invention discloses an information security risk assessment method based on a fault tree and a system of the information security risk assessment method. According to the information security risk assessment method, a fault tree analysis method is adopted to achieve system risk calculation for a network device, non-intersecting minimum cutest is adopted to carry out risk qualitative analysis and top event probability analysis, location of the weakest link of the system is conducted quickly and occurrence probability of the weakest link of the system is calculated, through the method, system safety grading is carried out, and corresponding rectification measures are put forward. Due to the fact that the information security risk assessment method is adopted, the information security risk assessment method based on the fault tree and the system of the information security risk assessment method are suitable for safety assessment of an application system constructed on a network security hardware device in a frame mode.

The invention discloses a network attack processing method and device, computer equipment and a storage medium, and belongs to the technical field of computers. According to the method, a first virtual machine and a second virtual machine are operated, and when it is detected that the first terminal performs network attack on the virtual service system operated in the first virtual machine, the second virtual machine establishes connection with the first terminal so as to control the first terminal subsequently; the method comprises the following steps: acquiring network attack behavior data of a first terminal through a first virtual machine and a second virtual machine, and determining the target danger level of the network attack and a target data acquisition category corresponding to the target danger level based on the network attack behavior data; and actively obtaining the data corresponding to the target data acquisition category from the first terminal by applying the connection established between the second virtual machine and the first terminal, so that the information of the intruder is comprehensively and accurately acquired, the network attack can be defended and counterattack based on the information, and the network security maintenance is facilitated.

A drive machine for an elevator includes a motor module including at least a motor, a drive shaft, and a first transmission wheel, which are provided with a common rotational axis and connected coaxially to each other. The drive machine further includes a traction module including at least a traction wheel engageable with elevator hoisting ropes, and a second transmission wheel, which are provided with a common rotational axis and connected coaxially to each other. The motor module and the traction module are positioned side by side with their rotational axes parallel, such that the traction wheel and the drive shaft are side by side, and the first and second transmission wheels are side by side. The drive machine further includes an endless drive member passing around the first and second transmission wheels. An elevator comprising said drive machine is also disclosed.

A valve apparatus including a check valve and a ball segment valve is provided within a fluid system for handling a flammable working fluid. The valve apparatus is arranged such that flapper doors of the check valve longitudinally overlaps a ball segment of the ball segment valve when each are in respective open positions such that the valve apparatus maintains a face-to-face dimension of a standard ball valve. The valve apparatus can thus provide positive isolation and directional fluid control in a congested fluid system with space savings over single valves. An isolated chamber is defined between the flapper doors and the ball segment when each is in a respective closed position. A non-flammable fluid is injected into the isolated chamber to urge the flapper doors and ball segment toward the closed positions to thereby provide a safe environment for performing maintenance operations on downstream fluid components.

The invention relates to a low-voltage capacitance compensating cabinet, which comprises a stand body consisting of a plurality of stands. The left side stands and the right side stands are respectively provided with a plurality of beams every certain distance from the top to the bottom. The rear side stand is provided with a core plate which is equipped with a bended copper bar connected with an incoming line knife fuse. A drawer-type module of the core plate is provided with a capacitor with certain capacity, an electric reactor, a contactor or a thyristor switching module, a vertical busbar and a fuse. The modules are connected with each other by special bus clampers. The low-voltage capacitance compensating cabinet can conduct the modularized design on the structures such as the capacitor, the electric reactor, the contactor or the thyristor switching module, the vertical busbar, the fuse and the like arranged in the cabinet with the guarantee of the performance of the capacitance compensating cabinet; compared with the traditional fixed arrangement, the capacity of the single cabinet can be improved by at least one time, and the cabinet can be easily matched with various cabinets of different types and can generate various capacities and progression according to the needs; and the maintenance and the updating of the cabinet are convenient and safe.

The invention discloses a rail transit operation safety online real-time monitoring and early warning management cloud platform based on artificial intelligence. The platform comprises a region division module, an image acquisition module, an image preprocessing module, a turnout model detection module, a switch rail contact area detection module, an orbital transfer speed detection module, an orbital transfer dynamic transverse stress detection module, a wheel set inner side distance detection module, a modeling analysis server, a database, a management server, an early warning module and a display terminal. Through real-time detection of the running speed, the transverse stress borne by a railway turnout, the wheel set inner side distance and the contact area of a switch rail and a slide plate during rail transfer when a train passes through the railway turnout of each detection sub-region, a rail transfer safety influence coefficient is analyzed, and the safety condition of each detection sub-region during rail transfer can be visually displayed. The safety detection efficiency and accuracy during rail transfer of the train are improved, the labor cost is reduced, and the use safety of the railway turnout is guaranteed.

The invention belongs to the technical field of FFC, in particular to a flat wire harness for electrical connection in new energy automobiles. The technical problem that the wire harness in the prior art has a complicated circuit and is difficult to install is solved. The flat wire harness for electrical connection in automobiles includes a flat trunk line cut from an FFC (Flexible Flat Cable). The flat trunk line is provided with a plurality of flat branch lines extending on one or two sides of the flat trunk line. Butting connectors which can be plugged into electrical modules in an automobile are arranged at the ends of the flat trunk line and the flat branch lines respectively. The flat trunk line and the flat branch lines are provided with connecting structures for fixing the wire harness into an automobile. Compared with the prior art, the flat wire harness of the advantages of simplified circuit, convenient installation and low cost.