63results about How to "Avoid failure damage" patented technology

The invention relates to a display device and a flexible display panel thereof. The flexible display panel comprises a screen body and a buffer layer adhering to the lower surface of the screen body,wherein the screen body comprises a display area and a non-display area extending outward from the display area, and the non-display area comprises a bending area and a non-bending area; the buffer layer extends out of the display area and covers the bending area, and the thickness of the buffer layer near the junction of the bending area and non-bending area is greater than the thickness of the buffer layer away from the junction; the buffer layer extends out of the display area and covers the bending area, so that buffer protection is performed on the bending area, and the overall thicknessof the bending area is thickened, thereby avoiding the occurrence of dead folding in the bending area; the thickness of the buffer layer at the junction of the bending area and non-bending area wherethe stress is concentrated is lager, thereby reducing the stress concentration at the position, so that a crease at the position is avoided, thereby preventing the screen body of the bending area anda circuit from being damaged and disabled.

The invention relates to a wiring method for fibers for monitoring a composite cylinder. The method comprises the steps as follows: (1) clamping a cylinder liner on a main shaft of a numerically controlled winding machine; (2) arranging the fibers on the surface of the cylinder liner; (3) forming in a winding way and solidifying a composite layer of the cylinder; and (4) performing a water pressure self-tightening test. According to the structural characteristics of the columnar composite cylinder, a winding geometric planning programming method of a geodesic line or a non-geodesic line of the composite cylinder is simulated, a geodesic line or a non-geodesic line fiber wiring method with the wiring direction changed gradually is adopted firstly, gradual change track wiring of the fibers for measuring stress, strain and temperature in any angle and direction is implemented, the fiber damage failure resulting from the relatively large stress difference between a winding layer fiber and a fiber is avoided in the winding forming process of the cylinder, the solidifying process of the cylinder and the water pressure test process after an optical fiber sensor is implanted, and the survival rate of the fibers implanting in a cylinder layer is greatly increased.

The invention relates to a flat-plate-type thermoelectric generator and a thermoelectric power generating component partition arrangement method. The flat-plate-type thermoelectric generator comprisesan end cover, a heat collecting end panel to which the heat collecting fins are attached, a heat insulation board, a thermoelectric power generation component, a water cooling head and a guide cold block compaction mechanism. The thermoelectric power generating component partition arrangement method of the flat-plate-type thermoelectric generator mainly comprises the following steps of accordingto the structure parameter of the flat-plate-type thermoelectric generator, calculating a total heat exchange amount; according to a specific size, carrying out partitioning; calculating the convection heat exchange amount of each area and acquiring the temperature distribution of an internal wall surface; and calculating and acquiring the temperature distribution of an external surface, and partitioning and arranging the thermoelectric power generating components of different work sections. In the invention, vehicle exhaust and waste heat are recycled to carry out power generation; accordingto a specific usage condition, the thermoelectric power generating components are arranged in a partitioning mode; and thermoelectric conversion efficiency is increased and cost is effectively reduced.

The invention relates to a pitch-varying system for a synchronous variable-pitch wind generating set with a protection function. The pitch-varying system comprises blades, a pitch-varying rocker mechanism, a pitch-varying pushrod and an electric pushrod, wherein the pitch-varying rocker mechanism is arranged in a wheel hub; the blades are fixed with the pitch-varying rocker mechanism; a power input end of the pitch-varying rocker mechanism is arranged at the end part of the pitch-varying pushrod; the electric pushrod is provided with a bracket support; the pitch-varying pushrod is fixed with the electric pushrod; a driving motor is connected with an pitch-varying electric control system; the electric pushrod is provided with an output shaft; a fan spindle is sleeved outside the pitch-varying pushrod; a gearbox hollow low-speed shaft is sleeved on the fan spindle; the front end of the fan spindle is fixed with the wheel hub; the rear end of the fan spindle is connected with the gearbox hollow low-speed shaft in an expanding manner; the gearbox hollow low-speed shaft is mounted in a speed-up gearbox; an output shaft of the speed-up gearbox is connected with a generator; a gear pair is mounted at the end of an output shaft of the electric pushrod; an input gear of the gear pair is fixed at the end part of an accessory shaft; a gear A is mounted at the other end of the accessory shaft; an electromagnetic clutch is arranged at the middle part of the accessory shaft; and a gear B engaged with the gear A is fixed on the gearbox hollow low-speed shaft.

The invention belongs to the technical field of vehicle maintenance, and relates to a vehicle-mounted storage battery automatic replacing station with vehicle body precise positioning. The automatic replacing station comprises a vehicle positioning and lifting mechanism for positioning and lifting an electric vehicle and a battery locking and unlocking mechanism for positioning and replacing a vehicle-mounted storage battery. The vehicle positioning and lifting mechanism comprises two vehicle body positioning assemblies. Each vehicle body positioning assembly comprises a support arranged in asupporting platform, a positioning motor fixed in the middle of the support, and two positioning blocks arranged on the two sides of the support. Two guide rails for limiting the movement of the positioning blocks are arranged on the support. Each positioning motor drives the two corresponding positioning blocks to move along the corresponding guide rail synchronously. The relative positions of the two positioning blocks of each positioning assembly of a vehicle body are not changed, synchronicity is good, and control precision is high; the number of motors is reduced, and device cost is saved.

The invention relates to a fully-rotary ROV load bearing device which comprises an umbilical cable terminal. The bottom of the umbilical cable terminal is connected with a wiring cabin through fasteners. In the wiring cabin, an umbilical cable watertight connector of the umbilical cable terminal is connected with a stationary ring watertight connector through a watertight cable component; a slip ring cabin is fixedly installed at the bottom of the wiring cabin through fasteners, a photoelectric slip ring stationary ring is installed on the inner wall face of the slip ring cabin through a fixing pin and located on the lower portion of the stationary ring watertight connector, and a photoelectric slip ring moving ring is installed on the lower portion of the photoelectric slip ring stationary ring; an upper bearing and a lower bearing are installed between the inner wall face of the slip ring cabin and the outer wall face of a photoelectric slip ring shaft sleeve from top to bottom, andan end cover is installed at the bottom of the slip ring cabin through fasteners; and a load bearing head is installed at the bottom of the photoelectric slip ring shaft sleeve through fasteners, a moving ring connector is installed at the bottom of the photoelectric slip ring moving ring, and the moving ring connector penetrates out of the load bearing head through a lead-out watertight cable component and is connected to a junction box. The fully-rotary ROV load bearing device is good in work reliability.

The invention provides a control system and method of a bucket elevator and the bucket elevator. The system comprises a flow detection device and a control device, wherein the flow detection device isarranged on a motor main loop of the bucket elevator and used for monitoring the running current of the bucket elevator; and the control device is used for controlling the bucket elevator according to the running current. According to the control system and method of the bucket elevator and the bucket elevator, the whole running process of the bucket elevator can be effectively monitored, the situation that an existing bucket elevator fails to shut down when overloaded due to material blockage, and consequently the faults of damage to a hopper and a chain plate of the bucket elevator, tail wheel groove skip and the like are caused can be avoided, and the running safety of the bucket elevator is improved.

The invention discloses a peak-adjusting gas-fired boiler water supply flow and pressure double-balance type control system. The peak-adjusting gas-fired boiler water supply flow and pressure double-balance type control system is used for controlling the double balance of a water supply flow and pressure among a boiler drum and a variable-frequency water feeding pump and a power-frequency water feeding pump; when the variable-frequency water feeding pump is connected with an outlet pipeline of the power-frequency water feeding pump, the boiler drum is connected through a water feeding pipe; the system comprises an acquisition module, a control module and an execution module, wherein the acquisition module is used for acquiring a water supply flow signal, a water supply pressure signal, a boiler drum liquid level signal and a boiler drum pressure signal; the control module is used for generating a control signal of the water flow and the pressure according to the signal fed back by theacquisition module, and the execution module is controlled to perform operation; the execution module controls the running frequency of the water feeding pump and the opening and closing of a water supply adjusting valve according to the control signal of the control module. According to the system, the pressure and flow tracking adjustment can be realized, adjusting precision and response speed are improved, the tracking and adjusting controlling performance of boiler load fluctuation in a peak-adjusting process of a water supply system is better, and the operation working condition is stabilized.

The invention relates to the technical field of alternating-current double-power switching devices, and discloses an alternating-current double-power switching device capable of providing over-current protection when an external circuit is short-circuited. The alternating-current double-power switching device comprises a positioning frame, sliding blocks are slidably connected to two sides of the positioning frame, and a rotating handle is rotatably connected to the middle of the front end of each sliding block. Symmetrical limiting strips are fixedly connected to the upper side and the lower side of the rotating handle, an abutting column extending to the rotating handle is rotationally connected to the side, close to the middle of the positioning frame, of the front end of the sliding block, and limiting columns are fixedly connected to the two sides of the limiting strips on the lower portion of the front end of the sliding block. According to the alternating-current double-current switching device capable of providing overcurrent protection when the external circuit is short-circuited, current in the electromagnetic plates on the two sides is too large, so that the electromagnetic plates attract each other to enable the rotating handle to perform circuit switching, and during the period, the piston rod and the flow guide pipe are matched to relatively move to output airflow for arc extinguishing; therefore, reliable over-current protection can be effectively carried out when an external circuit is short-circuited, and early warning and reminding are carried out on a user for emergency processing.

The invention discloses a rail transit equipment inner end door and a control method therefor. According to the rail transit equipment inner end door and the control method therefor, a larger stroke value in the door opening/closing stroke serves as a control element of the door opening/closing speed, the larger stroke value can embody mechanical abrasion, the influence of the mechanical abrasion on the door opening/closing time is avoided, and the control precision of the operation time of the inner end door is improved; and meanwhile, a limit switch is not needed, and therefore, the fault that the limit switch is damaged can be avoided. In addition, the method can be suitable for inner end doors of all specifications, the movement stroke of a door body does not need to be measured in advance, and control over operation of the inner end door can be completed through self-learning.

The invention provides a replaceable house anti-seismic joint damping box, and relates to the technical field of house building. The replaceable house anti-seismic joint damping box comprises a protection box, a mounting block and a replaceable damping device, and the replaceable damping device comprises a convex groove, a central through hole II, stress rods, an annular limiting piece, a fixed sliding block, damping springs I, damping springs II and an annular sliding cylinder. By arranging the replaceable house anti-seismic joint damping box, the problem that an anti-collision device is damaged and deformed due to long-term use and cannot be continuously used is solved, and the anti-collision effect can be continuously achieved only by replacing the damping box of the house anti-seismic joint. According to the replaceable house anti-seismic joint damping box, by arranging the damping springs at the two parts, the double-effect energy dissipation damping effects are achieved, the damping effect of a building is improved, and then the two parts of the building body are prevented from being collided and damaged. The damping springs I are arranged to prevent the stress rods from inclining in the stress process, so that the failure and damage of the whole replaceable damping box are effectively prevented, and the durability of the function of the damping box is realized.

The invention relates to a gas well casing annulus seal integrity failure prevention device, which comprises a sleeve adhered to the outer periphery of the casing and used for force-protecting the cement sheath. Wherein, the elastic modulus of the sleeve is 5-10MPa, the Poisson's ratio is 0.25-0.5, and the thickness is 4-8mm. The invention adds a layer of buffer medium on the outer periphery of the casing to completely or to a certain extent absorb the deformation of the casing caused by the change of the downhole pressure, reduce the influence of the internal pressure of the casing on the force of the cement sheath, and avoid the cement when the internal pressure of the casing is too high. The failure and damage of the ring can be prevented to prevent the failure of the integrity of the casing annulus seal and the resulting problems of annular pressure and annular channeling.

The large-angle compensation heavy-load suspension spherical joint comprises an upper shell and a spherical lower joint which are coaxially arranged together in a sleeved mode, the upper shell is connected to a mining operation platform in a suspension mode, and the spherical lower joint is connected with an underwater hard pipe. And the underwater system and the mining operation platform are connected into a whole. As a flexible connecting device, the large-angle compensation heavy-load suspension spherical joint can compensate the angle deviation generated by underwater equipment in ocean current during mining operation or danger avoiding, relieve the bending moment of a mining operation platform and the underwater equipment, prevent an underwater hard pipe from being bent and damaged, and guarantee the safety of the mining operation equipment.