339results about How to "Reduce looseness" patented technology

Alloy elements are reasonably matched, N and nitrides are added to form elements such as tungsten W, vanadium V, niobium Nb, cobalt Co, rare earth RE and the like for microalloying smelting, a forged and rolled material finished product is subjected to proper heat treatment, and the stainless steel subjected to heat treatment has good heat treatment performance through metallographic observation. According to the stainless steel, nanoscale carbides are separated out in a solid solution state, and fine particles mainly containing nitrides are dispersed and separated out in crystals in a thermodynamic state, so that the material is strengthened and does not diffuse to a crystal boundary, and the room-temperature mechanical property and the high-temperature mechanical property of the material are greatly improved; and when the stainless steel material produced by the method is used for manufacturing related products, the thickness of the stainless steel material can be reduced, and the overall input of the stainless steel material is greatly reduced, so that the large-scale application of noble metal strategic resource nickel is saved, and the aims of saving resources, energy and investment are fulfilled.

The invention relates to the technical field of batteries, and discloses a riveting top cover, a battery cell cover plate and a battery cell. Wherein the riveting top cover comprises a riveting block and a pole column, the riveting block is provided with a through hole, the through hole comprises a matching hole, a secondary riveting hole and a main riveting hole which are coaxially arranged in sequence, the pole column comprises a base and a protruding part arranged on the base, the protruding part is provided with a matching section, a secondary riveting section and a main riveting section which are in one-to-one correspondence with the matching hole, the secondary riveting hole and the main riveting hole, and the matching section, the secondary riveting section and the main riveting section are in one-to-one correspondence with the matching hole, the secondary riveting hole and the main riveting hole. The first annular cavity is reserved between the secondary riveting section and the secondary riveting hole in the pre-assembly state, the second annular cavity is reserved between the main riveting section and the main riveting hole, and the first annular cavity and the second annular cavity respectively reserve material expansion spaces for the secondary riveting section and the main riveting section. Therefore, part of the first annular cavity can be filled with the secondary riveting section after the secondary riveting section expands under the action force, the phenomenon that the riveting block is locally expanded or deformed due to expansion of the secondary riveting section in the traditional riveting process is avoided, and the yield of the riveted top cover is improved.

The invention discloses a multi-point grounding current limiting device, and relates to the technical field of power transmission line construction, the multi-point grounding current limiting device comprises a placement frame and further comprises a protection assembly, a grounding rod is fixedly installed at the bottom of the placement frame, a placement plate is fixedly installed on the inner wall of the placement frame, and a placement rod is fixedly installed at the top of the placement plate; lifting equipment is arranged on the circumferential surface of the placement rod, a signal receiver is fixedly mounted at the top of the lifting equipment, a current limiting assembly is arranged at the top of the placement plate, a fusing assembly is arranged at the top of the placement plate, a grounding connecting wire is arranged between the fusing assembly and the current limiting assembly, and a limiting frame is fixedly mounted at the top of the placement plate. According to the grounding current limiting device, the L-shaped plate moves downwards to drive the limiting plate to move downwards, the limiting plate moves downwards to make contact with the grounding connecting wire and extrude and fix the grounding connecting wire, the optimal state of the grounding connecting wire can be kept by avoiding bending or pulling, low grounding resistance is ensured, and therefore the efficiency and safety of the grounding current limiting device are improved.

The utility model discloses a combined type double-end drilling tool which comprises a first drill tip and a second drill tip which are oppositely arranged, a first connecting block is arranged at the bottom of the first drill tip, a second connecting block is arranged at the bottom of the second drill tip, a first thread is arranged on the outer side of the first connecting block, and a second thread is arranged on the outer side of the second connecting block. And internal thread connecting pipes are arranged on the outer sides of the first connecting block and the second connecting block. According to the first drill tip and the second drill tip which can be separated, the adaptability of the tool is improved, and a user is allowed to rapidly replace the drill tips according to different operation requirements. And meanwhile, the first connecting block and the second connecting block are connected and fixed through the internal thread connecting pipe, so that the connecting stability is ensured, and the loosening or falling risk in the working process is reduced. The design of the sliding rail and the sliding block ensures that the first drill tip and the second drill tip can be aligned in position when being combined, so that the first drill tip and the second drill tip can be easily connected through the internal thread connecting pipe.

The invention discloses a full-size wind tunnel high-load blade, which relates to the technical field of wind tunnel equipment and comprises a metal blade root, a hollow main beam and a blade body, a main beam connecting section is arranged at one end of the metal blade root, and the side wall of the main beam connecting section is a first conical side wall surface; the large opening end of the first conical side wall face is closer to the end, provided with the main beam connecting section, of the metal blade root than the small opening end of the first conical side wall face. The hollow main beam is formed by wrapping a carbon fiber cloth layer; a blade root connecting section is arranged at one end of the hollow main beam and fixedly arranged on the main beam connecting section in a sleeving mode. The inner side wall of the blade root connecting section is a second conical side wall face, and the second conical side wall face is attached to the first conical side wall face. The blade body is made of a carbon fiber material; and the blade body is fixedly arranged on the hollow main beam. The lightweight design degree of the blade is improved, and the lightweight effect of the blade structure is achieved.

The invention relates to the technical field of geological exploration, and discloses a metal mine prospecting exploration device and method for a field porphyry mine district, and the metal mine prospecting exploration device for the field porphyry mine district comprises a drilling machine, a drilling mechanism arranged at the front part of the drilling machine, and a connecting mechanism arranged in the drilling mechanism, the drilling mechanism comprises a connecting cylinder arranged at the bottom of the drilling machine, a first drill rod arranged at the bottom of the connecting cylinder, a drill bit arranged at the bottom of the first drill rod and an annular groove formed in the inner wall of the first drill rod. By arranging the drilling mechanism, the drilling machine can automatically adjust the flushing water amount during operation so as to adapt to different drilling target hardness, quick connection of the coring device and the drilling rod can be achieved, the assembling process of the coring device and the drilling rod is simplified, meanwhile, sufficient supporting force can be provided, and the situation that a rock core falls off due to insufficient force in the extraction process is prevented.

The utility model discloses a high-strength steel casing applied to an underwater pile foundation, and relates to the technical field of steel casings. The device comprises a first steel casing, a second steel casing is mounted at the top of the first steel casing, an inner ring plate is fixedly connected to the bottom of the second steel casing, an annular groove matched with the inner ring plate is formed in the top of the first steel casing, four storage grooves are evenly formed in the outer side of the first steel casing, and four pairs of fixing insertion holes are formed in the top of the first steel casing; and the bottom of the fixed insertion hole is communicated with the storage groove. After a traction locking bolt penetrates through a fixing insertion hole to be in threaded connection with a locking screw groove, one end of the locking bolt is installed in a storage groove, and when the first steel casing and the second steel casing are inserted into the ground, a guiding side plate abuts against an underground soil layer and extrudes the soil layer towards the two sides, so that the soil layer is prevented from being damaged. In this way, the situation that when the first steel casing and the second steel casing are guided to be inserted into the ground, the locking bolts are squeezed by the soil layer to be loosened is effectively reduced.

The utility model discloses a multi-contact line-to-board connector, and belongs to the technical field of connectors. A multi-contact line-to-board connector comprises a plug and a socket which are matched with each other, and further comprises a pair of first conducting strips which are arranged in the socket, contact elastic pieces are fixedly arranged at one ends of the first conducting strips, a connecting groove is formed between the contact elastic pieces, a second conducting strip is arranged in the plug, and the outer walls of the top and the bottom of the second conducting strip abut against the contact elastic pieces; according to the utility model, the pair of first conducting strips with the contact elastic sheets are arranged in the socket, the connecting grooves with small openings and large interiors are formed between the contact elastic sheets, reliable connection between the second conducting strips and the first conducting strips can be ensured under the elastic action of the contact elastic sheets, and due to the elastic effect of the connecting grooves, the reliable connection between the second conducting strips and the first conducting strips can be ensured after multiple times of plugging. The compact effect between the second conducting strip and the connecting groove can still be kept, the situation of loosening or falling off is reduced, and the reliability and stability during use are guaranteed.

The utility model discloses an anti-falling building outer wall heat insulation plate, and particularly relates to the technical field of outer wall heat insulation plates, the anti-falling building outer wall heat insulation plate comprises a heat insulation plate body, a building wall body is arranged on the rear side of the heat insulation plate body, an anti-falling mechanism is arranged between the heat insulation plate body and the building wall body, and a splicing mechanism is arranged on the outer side of the heat insulation plate body; the anti-falling mechanism comprises two fixing parts, the two fixing parts are arranged at the top and the bottom of the heat insulation plate body correspondingly, and one sides of the two fixing parts are fixedly connected with embedded parts. According to the utility model, the anti-falling mechanism and the splicing mechanism are arranged, and triple modes of fixation of the embedded part and the fixed part, glue connection and splicing fixation are adopted, so that the anti-falling performance of the building external wall heat insulation plate is greatly improved, the overall heat insulation effect and the use safety of a building are ensured, the service life of the heat insulation plate is prolonged, and the production cost is reduced. The maintenance cost is reduced, and reliable guarantee is provided for safety and stability of the building outer wall.

The utility model provides a payment terminal with a magnetic head waterproof structure, which relates to the field of financial transaction equipment and comprises a casing, one side of the casing is provided with a card swiping slot, one side in the casing close to the card swiping slot is provided with an installation slot used for installing a magnetic head assembly, the installation slot is provided with a sealing cover, and the sealing cover is inserted into the installation slot to form an isolation chamber. The magnetic head assembly is installed in the isolation chamber and comprises a connecting line, and the connecting line extends out of the isolation chamber and is electrically connected with the mainboard. The magnetic head assembly further comprises a magnetic head and a support, the magnetic head is installed on the support, the support comprises a top cover, the connecting line penetrates through the top cover, the top cover is provided with an annular protrusion around the connecting line, the top cover is provided with an insertion hole in a sealed insertion mode, and the annular protrusion is inserted into the insertion hole in a sealed mode. According to the utility model, the magnetic head assembly is isolated from the internal components of the device through the structure, the waterproof and dustproof effects of the financial transaction device are improved, the application scene of the device is expanded, and the service life of the device is prolonged.

The utility model discloses a photovoltaic module junction box anti -loosening fixing device, including junction box, wherein the junction box inside middle position is equipped with the terminal, and the both ends of terminal are equipped with helical spring respectively, wherein helical spring below is equipped with sliding mechanism. The utility model discloses through setting terminal connection fixed wire in the junction box inside middle position, sets up helical spring respectively at the both ends of terminal, effectively reduces the possibility that wire loosens at the junction because of external force and pulls, has reduced the risk of wire drop, has guaranteed the stability of electric quantity delivery, through setting sliding mechanism below helical spring, when wire is subjected to wind power and so on external force and pulls, sliding mechanism drives helical spring telescopic, can effectively buffer the pulling strength of external force to wire, further avoids the loosening of wire and terminal junction because of excessive stress, has strengthened the stability and reliability of whole junction structure.

The utility model relates to the technical field of household appliances, in particular to a refrigerator. The door body is movably connected to the refrigerator body and is constructed to open and close the refrigeration chamber; the evaporation dish assembly is arranged at the bottom of the box body, the evaporation dish assembly comprises an evaporation dish used for collecting defrosting water, the evaporation dish is provided with an inserting groove located in the outer side of the bottom of the evaporation dish, and the inserting groove extends in the length direction of the evaporation dish or the width direction of the evaporation dish; and at least part of the evaporating pipe is inserted into the inserting groove in the extending direction of the inserting groove, so that at least part of the evaporating pipe is attached to the bottom of the evaporating dish. The service life of the evaporation pipe is prolonged, the bottleneck problem that the size of the evaporation pipe is not accurate is solved, and the installation stability of the evaporation pipe can be improved.

This invention discloses a hip joint prosthesis for bone defects, comprising a crescent-shaped acetabular rim filler assembly, a bone-metal defect block, an acetabular wall defect support block, a cylindrical support block, an angle pad, a locking screw, a locking nut, an assembly screw, an acetabular sealing screw, and an acetabular support block. The crescent-shaped acetabular rim filler assembly includes two sets of crescent-shaped acetabular rim fillers, which are assembled by engaging pins through pin holes. The outer circumference of the bone-metal defect block of the acetabular support block is connected to the crescent-shaped acetabular rim filler assembly via bone cement. This hip joint prosthesis for bone defects effectively fills irregular defect areas of the acetabular rim. The various screw holes and Kirschner wire holes on its surface provide multi-dimensional fixation options. The overall structure, through the synergistic action of multiple components, achieves precise reconstruction while ensuring biomechanical performance, significantly reducing the risk of postoperative prosthesis loosening and wear.

The utility model discloses a safe type pressure sensitive resistance relates to resistance technical field, including the package shell, the package shell inside is provided with auxiliary mechanism, the auxiliary mechanism includes insulating foam layer, warning strip and elastic diaphragm, in the utility model, elastic diaphragm one side is fixedly connected with insulating foam layer, microswitch one side is fixedly connected with the package shell, and the elastic diaphragm is deformed after being extruded by grain boundary assembly expansion, and insulating foam layer exerts force on trigger strip after being stressed, triggers microswitch, and the circuit can be cut off by microswitch, and warning strip extends through -hole, and the mechanical early warning of aging sign is carried out, and it is convenient for staff to check in time, and the maintenance difficulty of reducing subsequently, and the one side of spacing piece is inserted with the support block, can be positioned to the installation of support block, and the installation and fixation of package shell bottom can be assisted by support block and fixed block, reduce the looseness after pin insertion, guarantee the stability when installing package shell.

The utility model relates to the technical field of photovoltaic solar cell processing, in particular to a photovoltaic laser reflector, which comprises a reflector body, a reflector frame and an adjusting device, the lens frame comprises a laser incident hole, a laser emergent hole and a lens cavity for accommodating the lens and the assembly body; the adjusting device comprises an adjusting plate and an adjusting piece, the adjusting device is adjustably arranged on the mirror frame, and the adjusting piece adjusts the laser emitting angle by changing the angle between the assembling body and the adjusting plate. According to the utility model, the polygonal mirror frame is designed to form the mirror cavity capable of simultaneously accommodating the reflecting light path and the mirror body, and the mirror body is directly sealed in the mirror cavity, so that the pollution of dust and water vapor can be isolated. The angle of the lens body is directly adjusted in the sealed lens cavity through the adjusting device, the operation difficulty of lens adjustment is reduced, the configuration structure of the mode is simple, and the good adjusting stroke can be achieved while the sealing performance is considered.

The utility model provides a high-altitude rescue unmanned aerial vehicle, which belongs to the technical field of unmanned aerial vehicle rescue equipment and comprises a mounting module arranged at the bottom of the rescue unmanned aerial vehicle, mounting guide rails are arranged at the bottom of the mounting module, a plurality of mounting blocks are fixedly arranged in each mounting guide rail, and a first socket is transversely arranged in each mounting block in a penetrating manner. A limiting assembly is movably arranged in each first inserting opening, a second inserting opening is vertically formed in each mounting block, each second inserting opening penetrates through the corresponding first inserting opening in the coaxial mode, a connector is detachably arranged in each second inserting opening, and a life buoy is arranged at the bottom of each connector. According to the life buoy, the electric push rod is started to be pulled out of the first inserting opening and the third inserting opening, the inserting groove is separated from the electric push rod, the connector is separated from the mounting block, the life buoy is made to fall down by earth gravity and fall beside help seeking persons, and then emergency rescue can be conducted on multiple help seeking persons.

This utility model discloses a connector socket and connector assembly, relating to the field of connector technology. The connector socket includes: a base body, the base body having a first slot, a second slot, and a third slot; conductive terminals, the conductive terminals including a positive terminal and a negative terminal, one end of the positive terminal being inserted into the first slot and one end of the negative terminal being inserted into the second slot; and an insulating partition, the insulating partition including an insulating body and an insulating dividing plate disposed on the insulating body, the insulating body having a limiting step, the insulating dividing plate being disposed between the positive terminal and the negative terminal, the bottom end of the insulating body having an elastic protrusion, the insulating body being inserted into the third slot, the end of the positive terminal away from the base body and the end of the negative terminal away from the base body respectively abutting against the limiting step, the elastic protrusion abutting against the base body. The technical solution of this utility model reduces the loosening of the insulating partition.

The utility model discloses a fixture capable of adaptively fixing a grinding tool. The fixture comprises a fixture main body and an expansion part, the clamp body comprises a disc base and a cutter handle, a through hole is formed in the disc base along the central axis, and the cutter handle is arranged on the disc base through the hole. The expansion part comprises an inner supporting sleeve and a conical screw; the bottom edge of the inner supporting sleeve is fixedly connected with the disc base, the inner supporting sleeve comprises a plurality of inner supporting assemblies, the inner supporting assemblies are fixed to the periphery of the conical screw, the radial width of one end of the conical screw is gradually increased in the direction away from the disc base, and when the conical screw is pressed downwards, the conical screw is fixed to the disc base. The inner supporting assemblies elastically expand outwards. Due to the arrangement of the conical screw and the inner supporting sleeve, the radial gap between the clamp and the grinding tool is reduced, and looseness of the clamp and the grinding tool in the machining process is reduced.

This invention relates to the field of remote crane control technology, specifically a crane control device, comprising a cabinet, a support carrier, and a guardrail. The cabinet is mounted on the support carrier; the guardrail is also mounted on the support carrier; the support carrier is the crane's frame or trolley; a control mechanism is installed inside the cabinet, which receives control commands remotely sent from the control room; the control mechanism integrates the crane's electric hoist control unit, trolley control unit, and crane trolley control unit; it also includes: a detection mechanism installed inside the cabinet; and a protective mechanism installed inside the cabinet, used to detect if the cabinet becomes loose. This invention achieves remote control of port container cranes by controlling the movement of the trolley and crane units within the crane, as well as the movement of transported containers, through the control mechanism; and it eliminates the need for personnel to frequently climb the crane to maintain the cabinet, greatly improving the convenience of inspections.

The invention relates to the technical field of side slope treatment, and discloses an anti-collision wall structure for side slope rockfall protection. A foundation pit is excavated at a high side slope toe, an anti-collision wall body is installed in a building area of the foundation pit, and a buffer area is additionally arranged, so that rockfall preferentially passes through the buffer area for buffering when falling to the high side slope toe; kinetic energy of fallen rocks is absorbed and dissipated, impact force of the fallen rocks is reduced, the risk that the fallen rocks bounce over the anti-collision wall body after falling to the ground is reduced, and the number of the fallen rocks bouncing over the anti-collision wall body after falling to the ground is reduced. Meanwhile, after falling rocks are buffered, the impact force is small when the falling rocks collide with the anti-collision wall body, the falling rocks are effectively prevented from colliding with factory buildings, a solid barrier is provided for the factory buildings, and therefore the falling rocks are effectively prevented from colliding with the factory buildings, and the safety of personnel and equipment in a field is protected; and direct economic losses such as equipment damage, production and work halt, casualties and the like caused by rockfall disasters are reduced.

The utility model discloses a lightning-protection grounding rod convenient to assemble, which comprises a main rod, a drill bit is arranged at the lower end of the main rod, a connector is arranged at the upper end of the main rod, and an assembling mechanism is arranged on the outer surface of the upper end of the main rod. The assembling mechanism comprises a first threaded groove, inserting grooves, a threaded column, a second threaded groove, a handheld rod, a rotary knob, a threaded rod and an inserting rod, the first threaded groove is formed in the middle of the outer surface of the upper end of the main rod, the two inserting grooves are formed in the two sides of the outer surface of the upper end of the main rod correspondingly, and the threaded column is located in the middle of the outer surface of the lower end of the main rod; the second threaded groove is formed in the middle of the outer surface of the upper end of the drill bit, and the drill bit is in threaded connection with the threaded column through the second threaded groove. The lightning-protection grounding rod convenient to assemble can be conveniently spliced, assembled and connected, reduces looseness, is convenient to use, and brings a better use prospect.

The application discloses a hand-operated pencil sharpener, which comprises a cutter holder assembly and a rocker arm assembly, and a gear reduction mechanism is arranged between the cutter holder assembly and the rocker arm assembly. The rocker arm assembly drives the cutter holder assembly to rotate through the gear reduction mechanism. The gear reduction mechanism comprises an input gear, a speed change gear and an output gear which are sequentially connected. The input gear is connected with the rocker arm assembly, and the output gear is connected with the cutter holder assembly. When the rocker arm assembly is forced to drive the input gear to rotate, the input gear acts on the output gear through the speed change gear, so that the output gear drives the cutter holder assembly to rotate at a reduced speed. The gear reduction mechanism composed of the input gear, the speed change gear and the output gear is additionally arranged, the torque is increased, and the cutter holder assembly rotates more stably and labor-savingly.

The utility model discloses a road asphalt crack sealing machine which comprises a material tank, a cover plate is movably connected to the top of the material tank, an asphalt pump is fixedly connected to one side of the material tank, a discharging pipe is fixedly connected to one side of the asphalt pump, a screw is rotated anticlockwise and loosened, and a sliding arm and a shade are moved to the position needing to be protected in cooperation with a U-shaped limiting hole. The cover plate is opened, asphalt raw materials are put into the material tank, the push rod is held to be matched with the rolling wheel to move the device to the position above the groove, then the air pump is started to blow and clean small chippings in the groove, the asphalt pump is started to inject asphalt in the material tank into the groove through the discharging pipe, and the device is pushed to move above the groove. And fine chippings sputtered from the grooves are shielded by the shielding cover and the inner plate, and naturally fall off after losing kinetic energy, so that the situation that the chippings sputtered at a high speed strike the skin of an operator to cause discomfort is effectively reduced, and the safety of constructors is guaranteed.

The utility model relates to the technical field of operation machinery, and discloses a mud guard and a wheel type operation machine. The fender comprises a fender body and an installation structure, the fender body is arranged to be in an arc shape matched with the outer contour of a wheel, the installation structure comprises an installation support and at least one connecting rod, the installation support is suitable for being installed on an axle, one end of the connecting rod is connected with the installation support, and the other end of the connecting rod is connected with the fender body. The fender body is suitable for being supported and arranged above the wheel in a covering mode. The fender body is arranged to be in the arc shape matched with the outer contour of the wheel, the fender body wraps the wheel along the outer contour of the wheel, the effect that the fender body wraps the wheel is good, and the mud blocking effect of the fender body can be improved. Meanwhile, the mounting bracket is mounted on the axle, so that the mudguard body can flexibly move along with the steering of the wheels, and the mudguard effect of the mudguard body on the steering of the wheels can be effectively improved.

The utility model discloses a tableted candy configuration device, which relates to the technical field of tableted candy production ingredients and comprises a bottom plate, a support frame is fixedly connected to the outer wall of the top of the bottom plate, a bearing seat is fixedly connected to the outer wall of the top of the support frame, and a fixing column is fixedly connected to the inner wall of the circumference of the bearing seat. A tank body is fixedly connected to the end, away from the bearing seat, of the fixing column, a driving assembly for driving the tank body to rotate is arranged at the top of the bottom plate, and a stirring assembly for improving the material mixing efficiency is arranged in the tank body. According to the utility model, various raw materials with different properties can be fully and uniformly mixed, so that the mixing effect of candy materials is effectively improved, the quality of subsequent tabletting and forming products is improved, and the problems of non-uniform taste, non-uniform color and the like are reduced.

This utility model belongs to the technical field of vacuum drying equipment, specifically a vacuum drying oven rack, including a rack body; multiple sets of first serrated frames and fixed frames are symmetrically fixedly connected to the inner wall of the rack body; sliding columns are symmetrically slidably connected to the inner side of the fixed frames; a pressure plate is fixedly connected to the lower end of the sliding columns; a spring is provided between the pressure plate and the fixed frame; the two ends of the spring are respectively fixedly connected to the fixed frame and the pressure plate; a placement plate is attached to the lower end of the pressure plate; second serrated frames are fixedly connected to both ends of the placement plate; the second serrated frames and the first serrated frames mesh with each other; the distance between the multiple sets of placement plates can be adjusted according to the size of the material, thereby flexibly adjusting the inner space of the rack body; at the same time, the meshing between the placement plates and the first serrated frames reduces looseness, making the material on the placement plates more stable.

The invention discloses a hydrogen storage tank filled with a hydrogen adsorption material, and belongs to the technical field of hydrogen storage tanks. The hydrogen storage tank filled with the hydrogen adsorption material comprises a tank body, a tank cover is installed at one end of the tank body, a heat exchange pipe is arranged in the tank body, the two ends of the heat exchange pipe penetrate through the other end of the tank body, the heat exchange pipe is in a U shape, a plurality of cooling fins are installed on the outer side of the heat exchange pipe, and the hydrogen storage material is arranged among the cooling fins. Supporting bases are installed on the two sides of the bottom end of the tank body, a bottom box is installed at the bottom ends of the supporting bases, a limiting mechanism is arranged in the bottom box, universal wheels are installed on the two sides of the bottom end of the bottom box, one end face of the tank cover communicates with a gas inlet and outlet pipe, a valve is installed at one end of the gas inlet and outlet pipe, and a gas inlet and outlet connecting pipe is installed at one end of the valve. The thermal management efficiency of the hydrogen storage tank can be effectively improved, the problem that an existing hydrogen storage tank is poor in thermal management effect is solved, and high practical value is achieved.

This utility model relates to the field of valve technology, and in particular to a two-way valve and an explosion-proof valve. The two-way valve provided by this utility model includes a housing and a fixed base forming an air exchange channel, and a first movable member and a second movable member. At least a portion of the first movable member passes through the second movable member and extends into the fixed base. The first movable member is axially movable relative to the second movable member and the fixed base. When the first movable member moves in a first direction, the air outlet channel communicates with a first gap. When the first movable member pushes the second movable member to move in a second direction, the air inlet channel communicates with the first gap. The movement of the first movable member within the air exchange channel forms separate air outlet and air inlet channels, precisely controlling the airflow direction, avoiding turbulence and backflow, improving exhaust efficiency, and adapting to airflow pressure requirements in different directions.