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 flexible display screen, a preparation method of the flexible display screen and a display device. The flexible display screen comprises a screen body and a flexible glue layer. The screen body comprises a display area and a non-display area extending outwards from the display area, the non-display comprises a flexional bending area and a non-bending area. The flexible glue layer adheres to the bending area, an uneven hook surface is formed on the side surface of the flexible glue layer, and the thickness of the flexible glue layer decreases in the direction away from the junction of the bending area and the non-bending area from the junction of the bending area and the non-bending area. The flexible glue layer adheres to the bending area to enhance the rigidityand toughness of the bending area. The bending stress of the bending area is subjected to multi-angle dispersion through the hook surface of the flexible glue layer, and the stress concentration is dispersed. The thickness of the flexible glue layer decreases in the direction away from the junction of the bending area and the non-bending area from the junction, so that the screen body strength ofthe junction is enhanced, and the bending area can be more conveniently folded.

Disclosed is an improved air suspension that prevents damage and / or failure of a component of an air spring, such as an air sleeve, by unwanted force or moment, such as rotational torque, applied to the air spring during vehicle traveling. The air suspension includes a damper including a cylinder and a piston rod, an air spring to which a canister and an air piston are hermetically connected via an air sleeve, an upper mount which secures the piston rod and the canister to a vehicle frame, a first bearing disposed at a connecting portion between the upper mount and the piston rod, and a second bearing disposed at a connecting portion between the air piston and the cylinder. Each of the first and second bearings is a thrust bearing.

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 provides an air-cooling heat dissipation structure of a high-power modular power source. The high-power modular power source is provided with a cooling air channel; a cooling device is arranged in the cooling air channel; heat emitted by the main heat-emitting component of the high-power modular power source is transferred to the cooling air channel through a heat transfer device; and the transferred heat is transferred out from the power source through cold and heat exchange. According to the air-cooling heat dissipation structure of the high-power modular power source of the invention, the cooling air channel is arranged in a power source module unit; the cooling device is arranged in the cooling air channel; the heat emitted by the main heat-emitting component of the power source is transferred to the cooling air channel through the heat transfer device; the heat is transferred out from the power source through cold and heat exchange; and therefore, cold and heat separation of the power source module can be realized, and high-protection level heat dissipation can be realized.

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 changing station. The vehicle-mounted storage battery automatic changingstation comprises an automobile positioning and lifting mechanism and a battery locking and unlocking mechanism; the automobile positioning and lifting mechanism comprises a supporting platform, fourlifting assemblies, two front wheel positioning assemblies, two rear wheel positioning assemblies and two automobile body positioning assemblies, wherein the supporting platform is used for supportingan electric automobile, the four lifting assemblies are positioned at four corners of the supporting platform, the two front wheel positioning assemblies are arranged at the front part of the supporting platform, the two rear wheel positioning assemblies are arranged at the rear part of the supporting platform, and the two automobile body positioning assemblies are arranged in the middle of the supporting platform; two parallel slide rails, which transversely go through the access direction of the electric automobile, are arranged on the supporting platform; the battery locking and unlockingmechanism moves along the slide rails; each lifting assembly comprises a lifting arm; and the four lifting arms independently act. According to the vehicle-mounted storage battery automatic changing station, the three-dimensional posture of the electric automobile can be adjusted by using the independently acting lifting arms to guarantee that a vehicle-mounted storage battery can be normally fedinto a battery compartment of a chassis.

An ESD protection component of an LDMOS structure and with high maintaining voltage can be used for an on-chip IC high-voltage ESD protection circuit and mainly comprises a P substrate, a high-voltage N trap, an N trap, a P trap, a P sink doping, a P+ injection region, a first N+ injection region, a second N+ injection region, a meal anode, a metal cathode, a polysilicon gate, a thin gate oxide layer and a plurality of field oxide isolation regions. According to the ESD protection component of the LDMOS structure, under the action of an high-voltage ESD, on one hand, a parasitic SCR current discharging path is formed by the P sink doping, the N trap, the high-voltage N trap, the P trap and the first N+ injection region, idle currents of the component are increased, and ESD robustness of the component is improved; on the other hand, by means of a biasing reversal PN junction formed between the second N+ injection region and the P sink doping, maintaining voltage of the component is improved and the latch-up-resistant capacity of the component is improved.

The invention discloses a rock test bearing chassis which mainly comprises a table type bearing chassis body and a bearing disc groove which is formed around the bearing chassis body, wherein the lower end face of the bearing chassis body is provided with a positioning mounting hole used for mounting the bearing chassis on a rock test rig loading base; and the bearing disc groove is used for bearing the leaked osmotic medium water in the rock test block penetration test process and the scraps generated by the rock test block breakage in the compression test process. The adverse effect caused to the testing equipment due to the water leakage and rock test block breakage in the rock test block penetration test process and the compression test process on the rock test rig in the prior art is avoided, the measurement and control sensor mounted on the rock test rig loading base is protected, and the cleaning convenience and rapidness of a three-axis pressure chamber of the rock test rig is improved.

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 discloses a wind turbine generator variable pitch bearing monitoring method and apparatus. The method includes the following steps: obtaining multiple axial displacements and multiple radial displacements corresponding to multiple positions in an inner ring of a variable pitch bearing at present, and finding the maximum axial displacement XO' and the maximum radial displacement YO'; and comparing the maximum axial displacement XO' and the maximum radial displacement YO' with the preset maximum axial displacement benchmark value Xmax and the preset maximum radial displacement benchmark value Ymax respectively, and outputting a variable pitch adjusting signal and / or an alarm signal if XO'>Xmax and / or YO'>Ymax. The wind turbine generator variable pitch bearing monitoring method and apparatus can prevent in advance, alarm in time and avoid losses by effectively monitoring displacements of the inner ring of the variable pitch bearing of a wind turbine generator.

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 discloses a shield tunnel segment lining structure of a stratum junction section and a design method. The shield tunnel segment lining structure comprises a junction section, conventional pipe sections are arranged on the two sides of the junction section, and the rigidity of a longitudinal joint bolt between every two adjacent segment rings on the junction section is higher than therigidity of each longitudinal joint bolt of the conventional pipe sections. The design method comprises the steps of establishing a longitudinal finite element numerical calculation model of a shieldtunnel, taking tunnel lining segments as concrete segments, and calculating the longitudinal sediment amount and the longitudinal deformation curve radius generated by the stratum junction section. According to the shield tunnel segment lining structure and the design method, the problem that in the prior art, the longitudinal deformation of a shield tunnel segment lining structure of the soft-hard stratum junction section is too large, the non-uniform stress is concentrated, and inter-ring longitudinal joints are damaged can be effectively solved.

The invention discloses a passive valve and a linkage valve formed by the same, and a toilet stool or a container using the passive valve. An accelerating hole, a branch pipe and an active valve are sequentially arranged on a main pipeline of the linkage valve; the branch pipe is arranged on the side surface of a pipe wall, which is close to the accelerating hole, behind the accelerating hole; the other end of the branch pipe is connected with the passive valve; the active valve is closed and the passive valve is also closed by pressure of liquid in the pipeline; after the active valve is opened, the passive valve is also opened by siphon force generated by flowing of the liquid in the pipeline. Due to adoption of the linkage valve, a tank-less water-saving toilet stool and a blowdown container can be produced, and an automated liquid configuration system is arranged.

The invention discloses a variable-rigidity sandwich composite material structure based on 3D printing and a forming method thereof, and belongs to the technical field of composite material structuredesign and manufacturing. Variable stiffness sandwich structure design is achieved by changing the wall thickness, the distribution uniformity and the geometrical shape of a core material in the sandwich structure. According to the forming method, firstly, a three-dimensional digital model of the sandwich structure is established, the stress distribution condition of the loaded part is analyzed according to working conditions, the thickness and density distribution of the core material is optimized, and then the integrated preparation of the sandwich structure is realized by utilizing a continuous fiber additive manufacturing process. According to the variable-rigidity sandwich structure designed by the invention, the rigidity and strength of the structure on the normal cross sections of different areas are different according to different working conditions, the designability of the sandwich composite material structure is expanded, and a new design thought is provided for lightweightdesign of the sandwich structure. Meanwhile, the manufacturing method provided by the invention can realize integrated forming of the complex variable-rigidity sandwich composite material structure,and the part manufacturing efficiency and quality are improved.

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 heat dissipation loop suitable for a large-power mobile closed-type hydraulic system. The heat dissipation loop comprises a closed-type hydraulic pump, a hydraulic motor, a hydraulic oil tank, a radiator, a cooling control device and a pipeline. The closed-type hydraulic pump is connected with the hydraulic motor through the pipeline, and the radiator is in series connection between an oil outlet of the hydraulic motor and an oil suction port of the closed-type hydraulic pump or in series connection between an oil outlet of the closed-type hydraulic pump and an oil inlet of the hydraulic motor. The closed-type hydraulic pump is connected with a leakage oil line of the hydraulic motor and the hydraulic oil tank. The radiator allows the flow of the passing hydraulicoil to be the total circulation flow of the hydraulic system, and the pressure bearing range is 0-35 Mpa. A liquid inlet and a liquid outlet of the radiator are connected with corresponding connectors of the cooling control system separately for circulating a cooling solution. The cooling control device controls the flow of the cooling solution entering the radiator according to the collected oiltemperature of the hydraulic system, so that the closed-type hydraulic system runs in a set temperature section. The heat dissipation loop has the high heat dissipation amount which can be adjusted.

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 flexible display panel which comprises a flexible panel, the flexible panel comprises a non-bending part and a bending part, the bending part is connected with the non-bending part, and the flexible panel is provided with an outer surface and an inner surface opposite to the outer surface; the at least one back plate supporting structure is arranged on the inner surface and is positioned on the non-bending part; and the bending stopping part is positioned on the inner surface of the bending part and can bear the end part, close to the bending part, of the back plate supporting structure.

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 prevention device and method for a seal integrality failure of a casing annulus of a gas well. The prevention device comprises a sleeve adhered to the periphery of a casing for conducting force bearing protection on a cement ring. The elasticity modulus of the sleeve is 5-10 MPa, the Poisson ratio of the sleeve is 0.25-0.5, and the thickness of the sleeve is 4-8 mm. A layer of buffer medium is additionally arranged on the periphery of the casing, so that casing deformation caused by the pressure change of a downhole is absorbed totally or to a certain extent, the influence of the inner pressure of the casing on the cement ring is reduced, failure destruction of the cement ring when the inner pressure of the casing is too high is avoided, and the seal integrality failure of the casing annulus, and problems of under-pressure and channeling of the annulus due to the seal integrality failure of the casing annulus are prevented.

The invention belongs to the technical field of electronic circuits, and discloses an overcurrent protection circuit and protection method of a T-type three-level inverter, and the overcurrent protection circuit comprises a T-type three-level inverter circuit, an overcurrent protection circuit and a switching tube driving unit. The output end of the T-type three-level inverter circuit is connected with the over-current protection circuit, the over-current protection circuit is connected with the switching tube driving unit, and the switching tube driving unit is connected with a transverse tube and a vertical tube of the T-type three-level inverter circuit; the over-current protection circuit is characterized in that the over-current protection unit comprises a delay unit, the delay unit is used for delaying over-current signals and then outputting over-current delay signals, and the over-current protection circuit controls turn-off of the transverse tube and turn-off of the vertical tube through the over-current signals and the over-current delay signals respectively. When the T-type three-level inverter is subjected to overcurrent protection, the current is converted from the vertical tube to the transverse tube, and is converted from the transverse tube to the switching tube of the other vertical tube after a certain delay, so that the VDS voltage stress of the inversion switching tube is effectively reduced, and the failure and damage of a device are avoided.

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.

The invention discloses a core three-in-one optical cable cross-connecting box comprising a box body, heat dissipation openings and ports. The inner cavity of the box body is divided into two inner cavities through an integrally-formed partition plate; and door plates are connected to the positions, corresponding to the two inner cavities, of the front side of the box body through hinges. Four heat dissipation openings with downward openings are formed in each of the left end and the right end of the front side of the door plate located at the bottom end of the front side of the box body fromtop to bottom at intervals. Three ports are formed in the top end of the partition plate of the inner cavity of the box body from left to right at intervals. Besides, the box also includes insertion slots; two insertion slots are formed in the left side and the right side of the bottom end of the partition plate in the inner cavity of the box respectively. According to the core three-in-one optical cable cross-connecting box, a phenomenon that the elements in the box body fail and are damaged because dust enters the box body and covers the elements in the box body is prevented; the safe and stable operation of the elements in the box body is ensured; the service life of the elements in the box body is prolonged. The core three-in-one optical cable cross-connecting box can be widely popularized.