14results about How to "Avoid permanent damage" patented technology

The utility model discloses a spiral spring reinforced metal C type ring relates to metal C type ring technical field, including C type ring main part, the both ends of C type ring main part are all seted up with mounting hole, the upside of C type ring main part is provided with reinforcing structure, the reinforcing structure includes side ring cover, outer ring, built -in spring, inner ring, outer ring reinforcing rib and end cover, the utility model discloses the outer ring, the inner ring arc of built -in spring between the outer ring and the inner ring is stretched and produces the elasticity when C type ring main part is clamped into the groove part, and is passed through end cover and is delivered to the both ends of C type ring main part, makes it produce the trend of outward expansion to closely clamping groove part, and effectively improves the location effect to the larger diameter axle or hole.

This utility model relates to the field of loudspeaker technology, and in particular to a rectangular magnetic cover with indentations, comprising a magnetic cover body. The magnetic cover body has a plurality of indentations evenly arranged on the side surface of the magnetic cover body that contacts the magnet. All the indentations are filled with adhesive. The structure of this utility model can effectively absorb and buffer the impact force during the drop process, reduce the risk of magnet detachment and failure of the loudspeaker during drop tests, roller tests and consumer use, avoid permanent damage to the loudspeaker, and improve customer satisfaction.

The present invention discloses a drainage device for highway bridges, which belongs to the technical field of highway bridges, and comprises a main beam, a telescopic pipe member arranged between two adjacent main beams, a longitudinal drainage hole is opened on the main beam, and the telescopic pipe member is connected with the longitudinal drainage hole; the telescopic pipe member comprises a rigid straight pipe, and two corrugated pipes coaxially arranged at both ends of the rigid straight pipe, the outer end of the corrugated pipe is provided with a connecting plate connected to the main beam, and a plurality of groups of telescopic dampers are arranged between the two connecting plates of the same telescopic pipe member, and the telescopic dampers are evenly distributed in an annular manner on the outer circumference of the telescopic pipe member; an intermediate support is arranged on the outer side of the rigid straight pipe, and a guide rod is fixedly arranged on the intermediate support, and the two ends of the guide rod extend in the longitudinal direction of the main beam. When the device of the present invention encounters the effect of thermal expansion and contraction of the bridge itself or the influence of natural disasters, it can effectively protect the main body of the drainage device from damage, improve the service life of the device, and ensure normal drainage of the device.

The utility model discloses an environment-friendly gas insulated circuit breaker with uniform electric field distribution, which relates to the technical field of environment-friendly gas insulated circuit breakers and comprises a circuit breaker shell, a permanent magnet mechanism is arranged in the circuit breaker shell and used for quick assembly, and the permanent magnet mechanism comprises a manual opening assembly, a permanent magnet and a permanent magnet, the assembling assembly is arranged in the circuit breaker shell, the side plate is in lap joint with a boss of the top plate in a lock catch mode, the top plate is in lap joint with a boss of the upper isolation knife holder in a lock catch mode, and the isolation baffle is installed on the top of the top plate in a sliding mode. The vacuum arc-extinguishing chamber insulation baffle plate and the side plate are installed together through the tenons on the two sides and the mortises formed in the side plate, no metal piece can be seen from the appearance of the whole switch insulation plate, the overall weight is reduced, the assembly process is simpler and more convenient, and the production cost is reduced only by carrying out tenon-and-mortise lap joint according to a drawing. And permanent damage to the insulating plate due to a traditional bolt fixing mode is avoided.

The utility model relates to the field of electrical cabinet discloses a steel synthetic rubber composite water supply tap with flexible deformation capacity, including steel water supply tap, the both sides wall center of steel water supply tap upper end department is provided with the water outlet pipe respectively, the lower extreme of steel water supply tap is provided with the flexible connecting structure, the lower extreme of flexible connecting structure is provided with riser, the upper extreme of riser and the lower extreme of steel water supply tap are fixedly connected with the connecting flange respectively. In the utility model, through setting up flexible connecting structure, through the cooperation and use between outer layer, reinforcing layer, interlayer and inner layer, can guarantee whole when receiving the collision can through the self deformation absorption 80% above's collision impact, and can restore to the original shape after deformation, avoid the permanent damage of tap body, can make the water supply tap damage rate effectively reduced that agricultural machinery collision causes, significantly reduce the maintenance cost and downtime of agricultural irrigation equipment.

This application relates to the field of optical cable technology, and more particularly to a central tube type optical cable. The central tube type optical cable includes a reinforcing core, an optical transmission unit, a heat transfer layer, an enhancement layer, and an outer sheath. The optical transmission unit is disposed on the outer periphery of the reinforcing core; the heat transfer layer is disposed on the outer periphery of the optical transmission unit and includes an oil reservoir and thermally conductive silicone oil filled in the oil reservoir; the enhancement layer is disposed on the outer periphery of the heat transfer layer; and the outer sheath is fitted on the outer periphery of the heat transfer layer. When the thermally conductive silicone oil flows from the inner oil cavity to the outer oil cavity, the high thermal conductivity of the thermally conductive silicone oil carries away the heat of the optical fiber; when the thermally conductive silicone oil flows from the outer oil cavity to the inner oil cavity, the low-temperature thermally conductive silicone oil on the outside flows back into the inner oil cavity, cooling the high-temperature optical fiber. This forms a heat dissipation and cooling cycle, effectively transferring the heat generated by the optical fiber or reinforcing core in a short time to the outside, avoiding permanent damage to the optical fiber due to excessive temperature.

The utility model discloses a kind of biodegradable material mixing devices, including stirring frame, the top end of stirring frame is connected with protective device, protective device includes control sleeve, connecting sleeve, connecting rod, clamping groove, configuration groove, configuration plate, clamping block, configuration block, linkage sleeve, control block, connecting spring, control groove and storage groove, clamping groove is opened in the outside of connecting rod, configuration groove is opened in the inside of connecting sleeve, clamping block is connected with the inner wall of storage groove by connecting spring, configuration block is connected in configuration plate one side, control block is set in the outside of linkage sleeve, control groove is opened in the inside of control sleeve, storage groove is opened in configuration block, connecting sleeve outside is provided with locking mechanism, locking mechanism includes horizontal plate, vertical plate, locking sleeve, movable groove, movable plate, fixed block, locking spring and locking block, three horizontal plates are connected in the side of locking sleeve by vertical plate, the structure stability after threshold value is adjusted is ensured while the utility model realizes the flexible adjustment of overload protection threshold value, ensure that mixed work can be stably carried out.

An interface bonding failure testing method, system, storage medium and program product relate to the field of testing or analyzing materials by means of determining chemical or physical properties of the materials, in which method the interface bonding state between a pole piece coating and a current collector is evaluated by performing a single loading and unloading cycle. In the loading stage, when the pressure reaches the preset target detection pressure, the first resistance value is measured, and then the pressure continues to be increased to the preset peak pressure (the pressure is larger than the target detection pressure but smaller than the yield strength of the current collector). In the unloading stage, a second resistance value is measured when the pressure drops back to the preset target detection pressure. And judging the interface bonding state by comparing the difference value of the two resistance values with a preset lag threshold value: if the difference value is greater than the threshold value, judging that interface bonding failure exists. The method and the device are used for reducing the difficulty of identifying the overpressure risk and defining the optimal rolling process window.

The invention relates to a buffering device for absorbing large impact force. The buffering device comprises a pneumatic actuator, a buffering block, an energy accumulator, a buffering shell, a buffering piston and a buffering spring. The pneumatic actuator comprises an actuator shell, an actuator upper cover, an actuator piston and an actuator push rod; the actuator piston can axially slide along the inner wall of the actuator shell; a plurality of actuator guide shafts are arranged between the actuator upper cover and the actuator piston; the actuator piston is fixedly connected with the actuator push rod; the buffer block is fixed to the lower end of the actuator shell, and a closed air storage space is formed between the buffer block and the actuator piston. The buffer block is provided with an exhaust port which can be controlled to be opened and closed; the actuator push rod penetrates through the buffer block and is in sliding fit with the buffer block; the buffer shell limits the maximum stroke of downward movement of the actuator piston. The buffer piston is annular and is arranged between the actuator push rod and the buffer shell in a sleeved mode, the upper portion of the buffer piston abuts against the actuator piston, the lower portion of the buffer piston is communicated with an oil discharge channel embedded in the buffer block, and the oil discharge channel is communicated with the hydraulic energy accumulator.

The invention discloses a quadriceps femoris tendon taking device, and belongs to the technical field of medical instruments. Comprising a tendon taking column, a cavity is integrally formed in the tendon taking column, the left side of the tendon taking column fixedly communicates with a limiting cavity, the left side of the limiting cavity fixedly communicates with a clamping cavity, the interior of the clamping cavity is connected with a cutting-off cavity in a clamped mode, and a tendon taking opening is formed in the right side of the outer side wall of the tendon taking column; and the right end of the tendon taking column is fixedly connected with a rotary cutter head. According to the tendon taking device, through collaborative design of a plurality of components, an accurate and stable operation environment is provided for a tendon taking operation. The limiting block in the limiting cavity is accurately matched with the limiting clamping groove of the fixing cavity, unnecessary displacement of the fixing cavity in the horizontal direction and other directions is effectively limited, it is guaranteed that the cutting-off cavity and the cutting-off arc-shaped knife are located at the accurate working position all the time, and the risk of wrong tendon cutting caused by part position deviation is greatly reduced; and the accuracy of tendon taking and cutting actions is ensured. When the elastic clamping block in the clamping cavity is inserted into the fixing cavity, the fixing cavity is tightly clamped through restoring force generated by elastic deformation.

The utility model discloses a kind of display screen backboard quick dismounting mechanism, it is related to display screen technical field, the utility model includes fixed frame, the inner wall of fixed frame is fixedly connected with display screen, the outer wall of display screen is provided with quick release mechanism, the quick release mechanism includes outer frame, the outer wall of outer frame is fixedly connected with the outer wall of display screen, the utility model is limited sliding axle by limiting sliding axle, when limited sliding axle will simultaneously remove the extrusion to spring, when spring is no longer extruded, it will rebound, the force of spring rebound will drive limited sliding axle to reset at this time, the limited sliding axle after reset will recover the one end in originally being in the clamping groove into plug-in block, at this time, the limitation to plug-in block is released, and then the fixed limitation to backplate is released, at this time, backplate can be disassembled, to reach the effect of quick dismounting to backplate, can greatly simplify the maintenance process of display screen, not only reduce downtime, but also improve maintenance efficiency.

The sensor device comprises a weighing sensor, a bearing beam, a suspension beam and a limiting mechanism, the top of the first end of the weighing sensor is connected with the bearing beam, the bottom of the second end of the weighing sensor is connected with the suspension beam, and the limiting mechanism comprises a limiting rod and a first limiting piece. The first end of the limiting rod is connected to the bearing beam, the second end of the limiting rod movably penetrates through the suspension beam, the second end of the limiting rod is provided with a first limiting piece, the first limiting piece is located below the suspension beam, and when the weighing weight exceeds the threshold value of the weighing sensor, the first limiting piece abuts against the bottom of the suspension beam to limit the deformation range of the weighing sensor. It is ensured that the weighing sensor works in a safe range, permanent damage and measurement errors are prevented when the weighing sensor exceeds the rated load, and therefore the measurement precision is improved, and the maintenance cost is effectively reduced.

The invention relates to the technical field of personal care electric appliances, and discloses a beauty device electrical system with dual waterproof sealing and charging interface protection. Comprising a beautifying device body, a double-layer sealing structure is arranged in the beautifying device body, an outer layer is a waterproof outer layer composed of a head upper shell and a body outer shell, an inner layer is a closed cavity defined by a body lower shell, a head lining plate, the head lower shell and the body upper shell, and a battery and a mainboard PCB are contained in the closed cavity; the main body lower shell, the head lining plate, the head lower shell and the main body upper shell are assembled through a buckle structure; the charging interface is arranged on the beauty device main body and adopts a combined structure of a waterproof rubber plug and a metal dustproof net, and the waterproof rubber plug is automatically bounced off during charging and is reset and sealed after power failure; the insulation isolation layer is arranged between the battery and the mainboard PCB; the humidity sensor is arranged in the closed cavity; and the power supply control module is electrically connected with the mainboard PCB.

The invention discloses a satellite-borne optical amplifier power closed-loop control system based on an FPGA, and belongs to the technical field of satellite-borne optical communication, and the satellite-borne optical amplifier power closed-loop control system adopts an anti-radiation FLASH type FPGA as a core controller, and a configuration storage unit is based on a floating gate transistor physical structure so as to eliminate the configuration upset risk caused by single-particle bombardment; the FPGA internal control logic adopts a pure hardware pipeline architecture, comprises combinational logic and sequential logic, and has no software instruction scheduling link; the feed-forward unit realizes quick response through a pre-stored'input optical power-pumping current 'mapping table, and the feedback unit realizes fine steady-state correction by adopting parallel hardware PID (Proportion Integration Differentiation); and the feed-forward quantity and the feedback quantity are subjected to weighted fusion through a hardware multiplier-adder to form a closed-loop control system. By adopting a closed-loop control architecture combining feedforward and feedback, the feedforward unit can output a pre-regulating variable within 50ns at the moment of sudden change of input optical power, initial overshoot of pump relaxation oscillation is quickly suppressed, and the response time of the system is greatly shortened.