18results about How to "Avoid accidental breakage" patented technology

The invention discloses a cable stretching testing device and method, and belongs to the technical field of cable stretching testing, and the cable stretching testing device comprises a stretching mechanism which applies a pulling force to a cable so as to stretch the cable; the detection mechanism is used for acquiring a real-time tension value and a real-time elongation when the cable is stretched; the processing mechanism is used for processing and generating a cable tensile fracture analysis result according to the real-time tension value and the real-time elongation when the cable is stretched; and the control mechanism determines whether a fracture early warning prompt is generated or not according to the cable tensile fracture analysis result. According to the invention, the abnormal stretching state of the cable can be found in time, and accidental breakage of the cable in the testing process is effectively prevented, so that equipment damage and personnel safety risks caused by sudden breakage of the cable are avoided.

The invention belongs to the technical field of electromagnetic shielding, and particularly relates to a PTFE electromagnetic shielding material and a preparation method and application thereof. The PTFE electromagnetic shielding material is of a three-layer sandwich structure, an upper layer and a lower layer are polytetrafluoroethylene conductive microporous film layers, a middle layer is a conductive layer, the polytetrafluoroethylene conductive microporous film layers comprise PTFE resin, a reinforcing material and a conductive material, the conductive layer comprises thermoplastic resin and a conductive material, the density of the PTFE electromagnetic shielding material is 0.55-0.80 g / cm < 3 >, the strength is larger than or equal to 25 MPa, the elongation at break is larger than or equal to 290%, and the thickness of the PTFE electromagnetic shielding material is larger than or equal to 10 mm. The volume resistivity is not more than 0.015 omega.cm, and the shielding effectiveness is not less than 80db. The PTFE electromagnetic shielding material has good conductivity and mechanical strength, the conductive material is large in filling amount and not prone to falling off, and the PTFE electromagnetic shielding material also has good flexibility, sealing performance, acid and alkali resistance, abrasion resistance and high-temperature resistance at the same time.

The utility model relates to an overhead line jumper wire fitting, and relates to the jumper wire fitting technology field, the overhead line jumper wire fitting comprises a vertically arranged connecting ring, the outer side wall of the connecting ring is transversely and fixedly provided with a plurality of connecting rods, the plurality of connecting rods are arranged at equal interval angles, the outer side wall of the connecting rod is rotatably sleeved with a fixed rod, and the fixed rod is fixedly connected with the connecting ring. A fixed frame is fixedly installed at the end, away from the connecting rod, of the fixed rod, the fixed frame is connected with a movable frame through an adjusting mechanism, a first semi-ring is transversely and fixedly installed on the outer side wall of the movable frame, and a second semi-ring is rotatably installed on the upper end face of the first semi-ring.

The utility model discloses a pressure relief radiator for a gas insulation switch cabinet, which comprises a radiating plate, a pressure relief disc, a protective cover, a supporting block and a rotating rod which are mutually combined for use, the protective cover is of a movable turnover structure, and the protective cover covers the surface of the pressure relief disc in a normal working state to play a role in preventing a rupture disk from being accidentally ruptured; when the rupture disk is ruptured to release pressure, the protective cover is jacked open by high-temperature and high-pressure airflow, meanwhile, the effect of blocking and guiding the airflow to be released in the safe direction is achieved, a certain gap is formed between every two adjacent radiating fins, the radiating area of the radiator can be increased, heat exchange between the interior of the air box and the outside is accelerated, the radiating efficiency of the radiator is improved, and the service life of the radiator is prolonged. And the rupture disk is arranged in the pressure relief disc, so that when the air pressure in the air tank rises to a dangerous value, the rupture disk is ruptured, and the inside of the air tank releases pressure to the outside, so that the air tank is prevented from exploding.

The invention discloses an urban rail train traction device capable of recycling braking energy, and relates to the technical field of train traction, the urban rail train traction device comprises a mounting hanger, the middle part of the mounting hanger is rotatably connected with a buffer part, and the buffer part is provided with a coupling part in the direction away from the mounting hanger. By utilizing the friction temperature rise between the crushing pipe body and the sliding sleeve, the memory metal rod is heated to expand, the ball plug automatically opens the oil outlet pipe, and the outer wall of the crushing pipe body can be automatically and uniformly coated with lubricating oil in cooperation with the telescopic sliding of the sliding sleeve, so that the friction between the crushing pipe body and the sliding sleeve can be effectively reduced, the friction loss of the crushing pipe body is reduced, and the service life of the crushing pipe body is prolonged. Meanwhile, friction energy consumption of train operation is reduced, consumption of stored energy is reduced, more energy can be saved for other electrical systems of the train, and sufficient recycling of braking energy is facilitated.

The invention discloses a fireproof cable with a connector, and relates to the technical field of cables, the fireproof cable comprises cables, connector assemblies and a connecting piece, the two ends of each cable are fixedly provided with the connector assemblies, the two different cables are connected through the connector assemblies, the two connector assemblies are aligned, then the connecting piece is rotated to lock the two connector assemblies, and the two connector assemblies are connected through the connecting piece. The cable comprises a flame retardant pipe, the bottom of the flame retardant pipe is melted through temperature rise of a cable core, a flame retardant is extruded out through extrusion for fire extinguishing, a ventilation opening is formed in the connector assembly for ventilation, the cable core in the connector assembly can pierce the adjacent flame retardant pipe to extinguish fire through spontaneous combustion, and when the temperature of the cable core rises or spontaneous combustion occurs, the cable core can pierce the adjacent flame retardant pipe to extinguish fire. The flame retardant pipe can be melted to extinguish fire, the flame retardant can provide gaps for heat dissipation of the cable core in the flame retardant pipe, and meanwhile the situation that the flame retardant in the flame retardant pipe is sprayed out due to the fact that the cable is accidentally pressed can be prevented by taking out the flame retardant in a melting mode.

The utility model relates to a biopharmaceutical freeze dryer tray mechanism which comprises a tray body, a handle is fixedly connected to the middle of the front side of the tray body, a plurality of grooves are formed in the top of the tray body, and buffer mechanisms are arranged at the bottoms of inner cavities of the grooves. Blind grooves are formed in the positions, close to the tops, of the left sides and the right sides of inner cavities of the multiple grooves correspondingly, telescopic rods are fixedly connected to the sides, away from each other, of the inner cavities of every two adjacent blind grooves correspondingly, and through mutual cooperation of dampers, reset springs, top plates, second protection pads, hinge rods, movable rings, buffer springs, transverse rods and rectangular blocks, when a tray is transferred, the telescopic rods are fixedly connected to the inner cavities of every two adjacent blind grooves; when vibration occurs, a plurality of dampers and reset springs are extruded, and meanwhile, two hinge rods push adjacent movable rings to slide towards the opposite side on a cross rod to jointly extrude a buffer spring, so that the freeze-drying bottle is conveniently buffered and protected, accidental damage of the freeze-drying bottle is avoided, and the service life of the freeze-drying bottle is prolonged.

The application discloses a portable soil pollution detection tool box, which comprises a tool storage box. The tool storage box is small in overall structure, so that the soil pollution detection tool box is convenient to carry, can be used as a test tube rack, and is easy to open and close. The tool storage box is provided with a shock absorption and buffering structure, so that the test tubes are prevented from being broken accidentally. The tool storage box is provided with a push-pull structure, so that the test tubes are easy to take out. The test tubes are lighter than other detection tools, so that the tool box is convenient to carry. The tool box is provided with a C-shaped clamp and a long belt, so that the tool box can be hung on the body, and it is easy to take down and re-fix the tool box on the body.

The utility model relates to the technical field of blood sampling arm supports, and discloses a blood sampling arm support which comprises a main plate, an operation frame used for moving is fixedly installed at the bottom of the main plate, a supporting rod used for stabilizing is fixedly installed at the top of the main plate, and an adjusting arm used for controlling is fixedly installed at the top of the supporting rod. An arm support for placement is fixedly mounted at the top of the adjusting arm, a sundries box for placement is fixedly mounted at the top of the main plate, and a blood plate for storage is fixedly mounted at the top of the main plate. According to the blood sampling arm support, through cooperative arrangement of the supporting rod, the adjusting arm, the arm support body and the blood disc, the device can be more conveniently controlled during use, the device can be more stable through arrangement of the supporting rod, the height of the device can be controlled according to a patient, and through arrangement of the adjusting arm, the angle can be slightly adjusted; by arranging the arm support, the patient can feel more comfortable, and use is more convenient.

The embodiment of the utility model discloses a thermometer. The thermometer comprises a thermometer body, the thermometer body comprises a first end and a second end which are oppositely arranged, the first end is provided with a limiting part, the first end is further provided with a temperature probe, and the temperature probe is located on the side, away from the second end, of the limiting part; the protection piece comprises a third end and a fourth end which are oppositely arranged, a first through hole is formed in the third end, a protection cavity extending in the first direction from the third end to the fourth end is formed in the protection piece, the protection cavity is communicated with the first through hole, the thermometer body is movably connected into the protection cavity, the first end corresponds to the third end, and the second end corresponds to the fourth end; wherein the limiting part is used for abutting against the first through hole to limit the thermometer body to be separated from the protection cavity through the first through hole when the temperature probe extends out of the protection cavity through the first through hole. According to the thermometer provided by the embodiment of the utility model, the protection piece can be prevented from being lost in use, so that the thermometer body is protected, and the thermometer is prevented from being accidentally broken in use.

Provided are a can lid and an aluminum alloy sheet for can lid, in which even if a recycled aluminum alloy including aluminum UBC as a raw material is used, the amount of Al-Fe-Mn-based compounds and the like is reduced, and the can lid has the properties required for a can lid, such as pressure resistance and scribing strength. The can lid contains an aluminum alloy containing 0.17 to 0.40 mass% of Si, 0.23 to 0.50 mass% of Fe, 0.11 to 0.24 mass% of Cu, 0.5 to 1.0 mass% of Mn, and 0.6 to 2.7 mass% of Mg, and is characterized in that, in a plane of a panel portion defined by a rolling direction and a sheet thickness direction, the total area ratio of Al-Fe-Mn-based compounds and Mg2Si-based compounds is 2.5% or less, and in a sheet thickness central portion of a plane of the panel portion orthogonal to the rolling direction, the area ratio of grains having a circle equivalent diameter of 2 μm or more is 70% or more.

The utility model discloses a handheld mobile phone signal detector which comprises a storage box, protective foam is fixedly installed on the inner wall of the storage box, a mobile phone signal detector body is installed on the inner wall of the protective foam in an inserted mode, sliding grooves are formed in the inner walls of the tops of the left side and the right side of the mobile phone signal detector body, and the inner walls of the sliding grooves are connected with antennas in a sliding mode. A battery is detachably inserted and installed on the inner wall of the back face of the mobile phone signal detector body, a cooling fin is fixedly installed on the back face of the mobile phone signal detector body, the cooling fin is used for cooling the back face of the mobile phone signal detector body, and a jack is formed in the outer wall of the bottom end of the mobile phone signal detector body; a clamping seat is detachably installed on the inner wall of a jack, and relates to the field of mobile phone signal detectors, protective pads and cooling fins are fixedly installed at the handheld position and the back face of a mobile phone signal detector body to be used in cooperation, so that a good cooling effect can be conveniently carried out on the periphery and the handheld position of a battery, the stability of equipment use is improved, and the service life of the mobile phone signal detector is prolonged. And long-time use is facilitated.

The utility model relates to the field of distribution frames, and discloses a distribution frame for information technology engineering, which comprises a distribution box, a distribution frame is fixedly connected inside the distribution box, two fixing plates are fixedly connected to the front side of the distribution box, and the two fixing plates are respectively positioned on the left side and the right side of the distribution frame. The device comprises two fixing plates, the tops of the two fixing plates are fixedly connected with clamping devices, clamping blocks are arranged in the two fixing plates, the opposite sides of the two clamping blocks are fixedly connected with connecting plates, the opposite sides of the two connecting plates are fixedly connected with a mounting plate, and a plurality of fixing grooves are formed in the mounting plate. Bolts are in threaded connection with the interiors of the multiple fixing grooves correspondingly, rotary knobs are fixedly connected to the tops of the multiple bolts correspondingly, and pressing plates are rotationally connected to the bottoms of the multiple bolts correspondingly. The distribution frame for the information technology engineering has the advantages that a soldered circuit can be fixed, and the circuit is prevented from being pulled apart by mistaken touch.

The present disclosure relates to a system and method for preparing nano-silicon based on a gas phase decomposition method, the system comprising: a thermal decomposition device, provided with a carrier gas inlet, a silane-containing gas inlet and a gas-solid mixture outlet; a nano-silicon collecting device, connected to the gas-solid mixture outlet and provided with a tail gas outlet, for gas-solid separation of the gas-solid mixture generated in the thermal decomposition device; the thermal decomposition device comprises an inner furnace tube and an outer furnace tube sleeved outside the inner furnace tube, the outer wall of the outer furnace tube is provided with a heating and heat preservation device, and a closed interlayer cavity is provided between the outer furnace tube and the inner furnace tube; the inner furnace tube is used as a thermal decomposition chamber of silane, one end of which is provided with a silane-containing gas inlet and the other end of which is provided with a gas-solid mixture outlet; the interlayer cavity is connected to the carrier gas inlet, and the inner furnace tube wall is provided with a carrier gas channel for the carrier gas to enter the inner furnace tube; the gas pressure of the interlayer cavity is greater than the gas pressure of the thermal decomposition chamber. The scheme of the present disclosure avoids the deposition of silicon particles on the inner wall of the chamber.

The present invention belongs to the field of electromagnetic shielding technology, and specifically relates to a PTFE electromagnetic shielding material and its preparation method and application. The PTFE electromagnetic shielding material is a three-layer sandwich structure, the upper layer and the lower layer are both polytetrafluoroethylene conductive microporous membrane layers, the middle layer is a conductive layer, the polytetrafluoroethylene conductive microporous membrane layer includes PTFE resin, reinforcing material and conductive material, the conductive layer includes thermoplastic resin and conductive material, and the density of the PTFE electromagnetic shielding material is 0.55-0.80g / cm 3 , strength ≥ 25MPa, elongation at break ≥ 290%, volume resistivity ≤ 0.015Ω.cm, shielding effectiveness ≥ 80db. The PTFE electromagnetic shielding material of the present invention has good electrical conductivity and mechanical strength, a large amount of conductive material filling and is not easy to fall off, and the PTFE electromagnetic shielding material of the present invention also has good softness, sealing, acid and alkali resistance, wear resistance and high temperature resistance.

This utility model relates to the field of battery cell cap technology, and discloses a high-safety cylindrical composite cap, including a top cover, an explosion-proof sheet, a sealing assembly, a positive electrode connecting piece, an insulating pad, and an insulating isolation plate and a buffer pad for preventing internal short circuits of the battery cell. The top cover is located at the top, the explosion-proof sheet is located below the top cover and is fixedly connected to the top cover, and the sealing assembly is located below the explosion-proof sheet and fits tightly with the outer shell of the cylindrical battery. This high-safety cylindrical composite cap uses a sealing assembly including a rubber sealing ring and an elastic metal sealing ring. The sealing ring is tightly fitted onto the top edge of the cylindrical battery shell, effectively filling the tiny gaps between the shell and the cap. The sealing ring is located above the sealing ring and fits tightly with the explosion-proof sheet. The elasticity of the metal further enhances the sealing effect, effectively preventing external moisture and impurities from entering the battery, avoiding performance degradation and shortened lifespan due to contamination, and also preventing leakage of electrolyte inside the battery.

The invention discloses a portable soil pollution detection tool box. The portable soil pollution detection tool box comprises a tool storage box. Belongs to the technical field of soil pollution detection toolbox structures, and is characterized in that a tool storage box is arranged, the overall structure of the tool storage box is smaller, so that the soil pollution detection toolbox is more convenient to carry, can be used as a test tube rack, is easier to open and close, and is provided with a damping and buffering structure to prevent detection test tubes from being accidentally broken; a push-pull structure is arranged, the process of taking out a detection test tube is simpler, the arranged detection test tube is lighter than other detection tools, carrying is lighter, the soil pollution detection tool box has the functions of soil storage, soil mashing, soil filtering and soil mixed detection, the detection process is finer, and the detection effect is better; a C-shaped clamp and a long belt are matched with the tool storage box, so that the soil pollution detection tool box can be directly hung on the body, and the tool box can be taken down and clamped on the body again more simply.