425results about How to "Avoid structural damage" patented technology

The invention relates to the technical field of civil engineering structure plate deformation joint connection, and discloses a civil engineering structure plate deformation joint connecting device and a using method thereof.The civil engineering structure plate deformation joint connecting device comprises at least two adjacent concrete plates, and a deformation joint is arranged between the concrete plates; the elastic rubber belt is arranged in the deformation joint, and the elastic rubber belt is arranged in the length direction of the deformation joint and used for connecting the adjacent concrete slabs and providing telescopic connection to adapt to thermal expansion and cold contraction or other deformation of the concrete slabs; the supporting structures are located on the two sides of the elastic rubber belt, and each supporting structure comprises a first supporting plate and a second supporting plate. The elastic rubber belts are arranged in the length direction of the deformation joint, flexible connection can be provided between the concrete slabs, thermal expansion and cold contraction or other displacement deformation of the concrete slabs caused by temperature changes and foundation settlement are effectively absorbed through the design, and therefore the situation that the concrete slabs crack or are unstable in structure is avoided.

The invention provides automatic cargo loading equipment which comprises a transverse moving frame, a transverse moving driving mechanism, a lifting driving mechanism, a lifting driving mechanism, a lifting driving mechanism, a lifting driving mechanism and a lifting driving mechanism, and is characterized in that the transverse moving frame is driven by the transverse moving driving mechanism to transversely move; the mounting frame is provided with a rotary driving mechanism and located below the transverse moving frame, the two ends of the mounting frame are rotationally connected with a first linkage mechanism and a second linkage mechanism respectively, and the first linkage mechanism and the second linkage mechanism extend upwards and are driven by a lifting driving mechanism to do up-down lifting motion; the carrying mechanism is located at the bottom of the mounting frame, is driven by the rotary driving mechanism to transversely rotate and is used for inserting and taking corresponding goods; the lifting driving mechanism is used for driving the first linkage mechanism and the second linkage mechanism to move in the same direction or driving the first linkage mechanism and the second linkage mechanism to move in the opposite direction or one of the first linkage mechanism and the second linkage mechanism to move. The installation position of the rotation driving mechanism is lowered, vertical space is saved, rotational inertia is lowered, rotation stability is improved, and multifunctional driving of the lifting driving mechanism is achieved.

The invention relates to the technical field of valve testing, in particular to a testing device for valve pressure detection. The device comprises a fixing assembly and a testing assembly arranged on the fixing assembly. In the period that the pressing plates make contact with the hydraulic valve and fix the two ends of the hydraulic valve, the pressing plates are extruded to overcome the elastic force of the first springs to move into the end shafts, so that the inner rings drive the first sliding parts to move, then the first sliding parts drive the second sliding parts in sliding connection with the first sliding parts to move downwards, and the second sliding parts move downwards to drive the containing table to move downwards; the hydraulic valve can be conveniently rotated to adjust the angle during subsequent testing, the driving structure is arranged, when the hydraulic body drives the pressure head to upwards separate from the hydraulic valve shell, the hydraulic valve can be driven to rotate through rotation of the end clamping structure to adjust the angle, and then the hydraulic body drives the pressure head to move downwards to make contact with the hydraulic valve shell. Therefore, the multi-point pressure test of the hydraulic valve shell is realized.

The invention relates to the technical field of equipment state evaluation, in particular to an evaluation method and system for the health state of offshore operation equipment. The method comprises the following steps: acquiring component data of offshore operation equipment; performing initial life marking on the data of the offshore operation equipment component to generate initial life marking data of the offshore operation equipment component; performing real-time operation data acquisition on the data of the offshore operation equipment component to generate real-time operation data of the offshore operation equipment component; performing component division on the real-time operation data of the components of the offshore operation equipment based on the components of the initial life mark data to generate novel component operation data and old component operation data; performing environment change influence analysis on the operation data of the novel part to generate an external change influence factor of the novel part. According to the invention, through multi-dimensional data acquisition, environment and electrical influence analysis, fatigue damage assessment and intelligent prediction, the accuracy of health state assessment of the offshore operation equipment is improved.

The invention provides a roadway supporting structure and a construction method. The roadway supporting structure comprises a supporting group layer, anchoring systems, a flexible supporting belt, an adjusting system, a control unit and a sensing unit, the anchoring systems are arranged on the side portion and the top of surrounding rock, the flexible supporting belt is arranged on the inner surface of the supporting group layer and located on the top of a roadway, and the sensing unit is arranged in the top of the surrounding rock. The adjusting system is connected with the flexible supporting belt and the anchoring system on the top of the surrounding rock. The sensing unit is used for collecting a surrounding rock pressure value and transmitting the surrounding rock pressure value to the control unit, and the control unit receives the pressure value and deploys the adjusting system to adjust the pre-tightening force of the anchoring system and / or the tension of the flexible supporting belt. The invention aims at solving the problem of roadway support in a high-stress complex environment and ensuring the long-term stability and safety of a roadway.

The invention discloses a lithium ion battery negative electrode with low expansion and low impedance. The lithium ion battery negative electrode comprises a composite current collector and a negative electrode active material coating coated on at least one surface of the composite current collector, the negative electrode active material coating comprises a negative electrode active material, graphene and lithium polyacrylate; the mass ratio of the negative electrode active material to the graphene to the lithium polyacrylate is (90-99): (0.5-5): (0.5-5), the negative electrode active material comprises a silicon carbon material and a coating material layer arranged on the outer surface of the silicon carbon material, and the coating material layer comprises a polypyrrole layer and single-walled carbon nanotubes uniformly distributed in the polypyrrole layer. Compared with the prior art, the lithium ion battery negative electrode provided by the invention has the advantages of low expansion and low impedance, and can effectively inhibit the expansion of silicon particles, reduce the internal resistance of the battery and maintain the structural stability of the electrode.

The utility model provides a saline-alkali land treatment device for circulating irrigation and salt leaching, which comprises a buried pipe and a water collecting tank which are both buried in the land; the sedimentation tank is arranged on the ground, the sedimentation tank is connected with the water collecting tank through a connecting pipe assembly, and a salt-containing water outlet and an overflow port are formed in the sedimentation tank; the irrigation assembly comprises a first irrigation pipe and a second irrigation pipe, and the first irrigation pipe is connected with the salt-containing water outlet; the desalting assembly comprises a water outlet, a heating assembly and a condensing assembly, the heating assembly is communicated with the sedimentation tank through the overflow port, the water outlet is formed in the condensing assembly, the heating assembly heats, evaporates and crystallizes liquid from the sedimentation tank, and formed steam is cooled by the condensing assembly and then becomes liquid which is discharged through the water outlet. The water outlet is connected with the second irrigation pipe. The saline-alkali soil treatment device for circulating irrigation and salt leaching solves the technical problems of high cost and high difficulty in saline-alkali soil treatment in related technologies.

The invention discloses a real-time pressure maintaining device of a new energy automobile tire and a control method. The real-time pressure maintaining device comprises a hub motor arranged in a hub, a tire pressure sensor arranged on the inner side of the tire and an inflating valve arranged on the inner side of the tire. A rotating shaft is arranged in the hub and connected with the rotating end of the hub motor. An air pump machine is arranged on the side wall of the rotating shaft, the output end of the air pump machine is connected with an electromagnetic regulating valve, and the electromagnetic regulating valve is connected with an inflating valve of a tire through a pipeline; one end of the rotating shaft is provided with a conductive slip ring, the conductive slip ring comprises a rotor arranged in the rotating shaft, one end of the rotor is electrically connected with the air pump machine, the other end of the rotor is sleeved with a rotor bearing, the outer end of the rotor bearing is provided with a stator end cover, the other end of the stator end cover is provided with a stator, and the stator is provided with a stator interface connected with a vehicle body power supply and a signal end. Real-time pressure maintaining of the tire can be achieved, the service life of the tire is prolonged, and the reliability of the tire is improved.

The utility model discloses semiconductor process equipment which comprises a cavity, a gas uniformizing part, a rotating motor, a transmission assembly and a plurality of lifting assemblies, the lifting assemblies are distributed in the circumferential direction of the cavity at intervals, the lifting assemblies are connected with the gas uniformizing part, and the gas uniformizing part is connected with the rotating motor. And each lifting assembly is in transmission connection with the rotating motor through the transmission assembly, so that the rotating motor drives each lifting assembly through the transmission assembly to drive the gas uniformizing piece to do lifting motion relative to the cavity. According to the semiconductor process equipment, the problem that the gas uniformizing piece in the current semiconductor process equipment is easy to incline in the lifting process, so that the normal process is unfavorably influenced can be solved.

The invention relates to the technical field of cement additives, in particular to a powder composition for cement addition and a preparation process of the powder composition, modified sodium lignin sulfonate serves as an important component of the powder composition, dispersity and stability of sodium lignin sulfonate are effectively improved through sulfomethylation and condensation reaction, and in cement concrete, the powder composition has the advantages that the dispersity and stability of sodium lignin sulfonate are improved; the modified sodium lignin sulfonate can be adsorbed on the surfaces of cement particles to form a protective film, friction force and resistance among the cement particles can be reduced, so that the fluidity of the concrete is improved, meanwhile, a sulfomethylation structure of the modified sodium lignin sulfonate can chemically react with calcium ions in the cement to form stable calcium salt, the stability of the concrete is further enhanced, and the service life of the concrete is prolonged. According to the powder composition for cement addition and the preparation method of the powder composition, the performance of cement concrete can be remarkably improved through well-designed components, and the composition has excellent flowability, anti-permeability, anti-freezing property, water resistance, mildew resistance and rust resistance.

The invention discloses a conveying device and method for fan installation. The conveying device comprises a conveying base and a movably-arranged conveying ladder. The conveying ladder can be movably arranged on the adjusting frame in the horizontal direction to achieve multi-direction adjustment. According to the invention, the climbing installation assembly located on an offshore wind power installation platform or on land can be conveyed to be in butt joint with a tower drum; or the climbing installation assembly located on the tower drum is conveyed to the offshore wind power installation platform or the land; or the climbing installation assembly located on the land is conveyed to the offshore wind power installation platform; through cooperative cooperation of various driving mechanisms, all-dimensional flexible operation, self-adaptive dynamic adjustment function and other optimized combination of a plurality of structures, the device can flexibly adapt to various scenes, dynamic adjustment is achieved in the conveying process, the device can well adapt to the offshore installation environment, and the service life of the device is prolonged. And the transportation efficiency and safety of the climbing mounting assembly among different environments are remarkably improved.

The invention relates to the technical field of router anti-interference devices, in particular to a wireless router anti-interference method and device. According to the technical scheme, the anti-interference device comprises a base and further comprises an anti-interference cover installed on the base, the anti-interference cover comprises a signal isolation layer and a supporting piece for supporting the signal isolation layer, and the signal isolation layer is provided with a signal emission window and a folding module; and the folding module adjusts the size of the signal emission window by uniformly moving the anti-interference cover at each position. When the size of the signal emission window is adjusted through the folding module, cracks or gaps generated on the anti-interference cover due to non-uniform deformation of the anti-interference cover can be prevented, and electromagnetic interference is effectively prevented from entering the anti-interference cover. A weak area is prevented from appearing on the anti-interference cover, and the stability and transmission quality of wireless signals of the router are ensured.

The invention discloses a method for liquid-phase regeneration of a lithium iron phosphate positive electrode material, a positive electrode plate and a battery, and relates to the technical field of batteries, the method comprises the following steps: pre-treating a waste lithium iron phosphate material to obtain a pre-treated lithium iron phosphate positive electrode plate; immersing the pretreated lithium iron phosphate positive plate in a deionized liquid to obtain stripped lithium iron phosphate; preparing a lithium supplementing solution, immersing the stripped lithium iron phosphate into the lithium supplementing solution, and reacting for a first preset time in an inert atmosphere to obtain a reacted mixture; and separating a solid in the reacted mixture, and drying the solid to obtain the regenerated lithium iron phosphate material. According to the invention, lithium supplementation can be realized in a relatively mild liquid phase environment, and soluble Li < + > is uniformly distributed and freely diffused and moved in the solution through the liquid phase environment, so that Li < + > is more fully contacted with supplementation sites, and the supplementation effect of lithium-deficient sites is improved.

The invention discloses a low-temperature freeze vacuum dryer, which belongs to the technical field of freeze drying processing, and comprises a freeze drying box, a box seat system, a vacuum pump and a tray laying frame, the freeze-drying box is vertically arranged above the box seat system, and a vacuum pump is mounted on one side of the box seat system; four drying bins which are symmetrically distributed are arranged in the freeze-drying box, a tray laying frame is installed in the center of each drying bin, a vacuum connecting pipe is vertically fixed to the lower portion of one side of each drying bin, and one end of each vacuum connecting pipe is communicated with the vacuum pump; mounting discs are coaxially arranged on the upper portion and the lower portion of the freeze-drying box correspondingly, and a refrigeration circulating system and a heating circulating system are arranged on the mounting discs; outer ring frames are further fixed above and below the freeze-drying box; cooling freezing or heating sublimation can be alternately carried out on all the drying bins, so that repeated alternate circulation of freezing and sublimation is achieved, and the drying effect is good.

The invention discloses a three-way shock insulation support for outdoor substation strut equipment. The device is characterized in that the rod core is fixedly connected to the check block, two horizontal springs are arranged at the two ends of the rod core, a force transmission sleeve is arranged in the middle of the rod core, and outer sleeves are arranged on the outer sides of the force transmission sleeve and the horizontal springs. A hole is formed in the upper side of the force transmission sleeve and connected with the force transmission rod in a riveted mode, and a horizontal hole is formed over the outer sleeve. The bottom plate is of a locally-hollowed X-shaped structure, the center of the bottom plate is a circular steel plate, the friction ring is installed above the bottom plate, and check blocks are arranged at the four corners of the bottom plate. The bottom face of the sliding unit is fixedly connected with the friction ring, the middle plate and the sliding unit are welded through a sliding unit top plate, the dowel bar penetrates through the sliding unit, eight vertical restraining rods are arranged on the periphery of the middle plate, and the vertical restraining rods are welded to the middle plate through base plates below the vertical restraining rods. Vertical springs are arranged on the outer sides of the vertical restraining rods, and top plates are arranged on the upper portions of the vertical springs. A vertical friction unit is arranged between the top plate and the vertical constraint rod and is composed of two semicircular clamps, the clamps are connected through screws, and friction plates are arranged in the semicircular clamps. The three-way shock insulation support is simple in structure, the total height of the three-way shock insulation support is two layers, the risk of derailment is avoided, and the three-way shock insulation support has good spring in-plane constraint and anti-overturning performance.

The utility model belongs to the technical field of packaging boxes, and particularly relates to a paper packaging box with a reinforcing structure, which comprises a paper box body, a cover arranged on one side of the paper box body, a support rod, a clamping block, a chute, a top plate, a spring and a pressing plate, according to the device, through work of the clamping blocks and the pressing plates, the pressing plates can continuously press the surfaces of objects contained in the carton body, and sufficient force can be applied to the surfaces of the objects through the springs; according to the carton box, the carton box body is arranged, so that it can be guaranteed that articles in the carton box body can be prevented from being scattered when the carton box body jolts in the carrying and transporting process, the stable structure is achieved, through supporting of the top plate and the supporting rods, the supporting effect on the carton box body can be achieved when the carton box body is impacted or pressed by external force, and the practicability is high. The structure of the carton body can be prevented from being damaged, and the overall structure of the carton body has high stability.

The invention discloses a micro-grid-based hydrogen production control method and device and a storage medium, and the micro-grid comprises a photovoltaic power generation system, an electrochemical energy storage system, a hydrogen fuel cell system and a water electrolysis hydrogen production system comprising a plurality of electrolytic cells. The current SOC value of the electrochemical energy storage system is combined to control the electrochemical energy storage system and / or the hydrogen fuel cell system to operate, and the multiple electrolytic cells are controlled to operate at the respective optimal operation power; when the current power generation power of the photovoltaic power generation system is not zero and is smaller than the sum of the optimal operation power of the plurality of electrolytic cells, the current SOC value of the electrochemical energy storage system and the current power generation power of the photovoltaic power generation system are combined to control the photovoltaic power generation system and the electrochemical energy storage system and / or the hydrogen fuel cell system to operate; and the multiple electrolytic cells are controlled to operate at the respective optimal operation power. The influence of photovoltaic power generation power fluctuation on stable operation of the electrolytic cell can be relieved.

The invention relates to the technical field of reactors, in particular to a kneading-pressing type mixing reactor based on hydraulic drive and a working method, and the kneading-pressing type mixing reactor comprises a mixing cavity section module, a power source module and a microcontroller. Wherein the mixing cavity section module is provided with a flexible inner container used for containing materials, a plurality of independent flexible driving cavities are arranged outside the mixing cavity section module, and the mixing cavity section module comprises at least one annular cavity section and a base cavity section; the power source module conveys or recycles a working medium to each driving cavity through a pipeline system with an independent control valve and drives the driving cavities to expand or contract, so that local extrusion force is applied to the wall surface of the flexible liner from the outer side; the microcontroller controls all the valves to act according to a preset strategy and drives all the cavity sections to act cooperatively, so that the flexible inner container generates non-rotating modeling deformation kneading and pressing actions, three-dimensional mild mixing of materials is achieved, the safety risk of rotating components is fundamentally eliminated, and the problems that high-viscosity materials are poor in mixing uniformity and mixing heat release is difficult to remove rapidly are solved.

The invention belongs to the technical field of constructional engineering, and particularly relates to a solid recycled concrete precast pile device which is composed of a stand column, a precast cage and a bottom column, and the stand column, the precast cage and the bottom column are all hexagonal in appearance; the prefabricated cage is composed of transverse ribs and longitudinal ribs, the transverse ribs are arranged in a hexagonal shape, the longitudinal ribs are fixed to the inner corners of the hexagonal transverse ribs, and the transverse ribs are longitudinally arranged along the longitudinal ribs, so that the prefabricated cage forms a hexagonal woven cage; the bottoms of the longitudinal ribs extend downwards; according to the scheme, the precast pile device can be installed in a modeling mode, all the components are relatively independent and have a specific connecting mode, transportation, storage and on-site construction operation are facilitated through the modular design, the construction period can be effectively shortened, and the construction efficiency is improved.

The utility model discloses a PCTSP wallboard assembly type self-locking connection node, and relates to the technical field of building industrialization, in particular to an assembly type self-locking connection node for a prefabricated concrete sandwich wallboard, which is technically characterized by comprising a first wallboard, a second wallboard and an I-shaped positioning piece, a first T-shaped groove is formed in one side of the first wall plate, a first locking groove is formed in the inner side wall of the first T-shaped groove, a second T-shaped groove is formed in one end of the second wall plate, a second locking groove is formed in the inner side wall of the second T-shaped groove, and two locking blocks are slidably mounted on each of the two sides of the I-shaped positioning part. By arranging the locking blocks, the first wall plate and the second wall plate can be positioned and self-locked, so that the connecting structure is suitable for rapid installation and structural connection between the wall plates in a modular building, three-dimensional stress self-locking and tool-free rapid installation are achieved, the connecting operation is convenient and fast, and the fabricated wall plates are accurate in construction positioning and good in anti-seismic property.

The invention discloses a helicopter engine case vibration reduction method based on vibration energy flow control, and belongs to the technical field of structural dynamic response vibration reduction analysis. The invention aims to solve the problem of poor vibration reduction effect of the helicopter engine case in the existing method. The method comprises the steps of firstly constructing and correcting a finite element model of the helicopter engine case, then obtaining a vibration energy flow amplitude of each position on the case by calculating a vibration energy flow component and a vector of the vibration energy flow component of each position on a case surface, drawing a three-dimensional diagram of the vibration energy flow based on the vibration energy flow amplitude, and calculating the vibration energy flow of the helicopter engine case. Visualization of the distribution condition of the vibration energy flow in the cartridge receiver structure is achieved, the concentrated area of the vibration energy flow in the cartridge receiver can be accurately analyzed, finally the hanging point position of the engine is adjusted according to the distribution condition of the vibration energy flow so as to reduce the amplitude of the vibration energy flow in a specific area, then the vibration amplitude can be reduced, and the vibration reduction effect of the cartridge receiver can be improved. The method can be applied to vibration reduction of the helicopter engine case.

The present application relates to a cover structure, a radar assembly and a cleaning robot. The cover assembly includes: a support, a cover, a first elastic component and a first switch. The cover is connected to the support linearly movably between a first position and a second position along a first direction, and defines a receiving cavity together with the support. The first elastic component connects the support and the cover, and is used to provide a tendency force for the cover to return from the second position to the first position. The first switch has a first fixed end and a first trigger end, the first fixed end is connected to one of the support and the cover, and the first trigger end faces the other of the support and the cover. Wherein, when the cover is in the first position, there is a gap between the first trigger end and one of the support and the cover, and when the cover is in the second position, the first trigger end contacts the other of the support and the cover. The present application can not only avoid obstacles, but also simplify the cover structure, reduce the number of parts, reduce costs, and improve assembly efficiency.

The utility model discloses a drum type shot blasting machine which comprises a base and a machine body in transmission connection with the top of the base, sound insulation structures are arranged on the left side and the right side of the machine body, each sound insulation structure comprises connecting blocks arranged on the left side and the right side of the base, and the connecting blocks are fixedly connected with the base. The inner sides of the connecting blocks are movably connected with sealing covers through pin shafts, the sides, away from the connecting blocks, of the sealing covers are arranged on the surface of the machine body in a sleeving mode, and the inner sides of the sealing covers make contact with each other. The sealing covers are carried by the transmission structure to swing with the pin shaft in the connecting block as the axis, when the two sealing covers are arranged on the surface of the machine body in a sleeving mode, the nanometer coiled materials and the sound insulation cotton in the sealing covers can effectively absorb noise, the reflecting film can primarily reflect the noise, and therefore the noise can be effectively absorbed. Noise is reflected and counteracted in the sealing cover, noise diffusion is reduced, and the influence of noise generated by shot blasting impact on the surrounding environment is avoided.

The utility model relates to the technical field of constructional engineering, and discloses a column formwork wall structure with anti-seismic performance. The technical problems that in the prior art, a building structure is insufficient in connection stability, the safety performance is not high under extreme conditions such as earthquakes, and the mechanical property is limited are solved. The building structure comprises a ground beam, a plurality of stand columns and wallboards, at least two stand column grooves are formed in the side edges of the stand columns, and concrete stabilizing structures are poured in a ground beam cavity defined by the ground beam and the stand column grooves; wallboard grooves connected with the stand columns are formed in the two sides of the wallboards, the wallboards comprise an inner wallboard and an outer wallboard, a plurality of threading holes are formed in the inner wallboard in the vertical direction in a penetrating mode, noise reduction assemblies are arranged in the threading holes, and the outer wallboard comprises a heat preservation layer and a protection layer; a ring beam is arranged above the stand columns, and a concrete stabilizing structure is poured in a ring beam cavity defined by the ring beam. The utility model has the advantages of high-efficiency shock resistance, heat preservation, energy conservation, noise reduction, pipeline layout optimization, structural stability and the like.

The utility model relates to the technical field of steel structure buildings, and discloses a stock bin steel truss structure, which comprises a stock bin main body, a plurality of trusses, a plurality of steel beams and a plurality of steel beams, the hanging component comprises a hanging main body and a transverse supporting rod connected between the hanging main body and the stock bin main body; the hanging body comprises a bearing bottom frame and a hanging rod connected between the bearing bottom frame and the stock bin body, the bearing bottom frame comprises two longitudinal beams arranged at intervals and a plurality of cross beams connected between the two longitudinal beams, and at least one end of each cross beam is telescopically connected with the corresponding longitudinal beam through a telescopic sleeve rod. The steel truss structure can freely rotate through hinging to absorb deformation caused by displacement of a bottom support, and the design that the cross beams and the longitudinal beams of the hanging components are telescopically connected through the telescopic sleeve rods is adopted, so that node constraint can be released, structural displacement can be absorbed, and the problems that in the prior art, a storage bin truss structure cannot adapt to settlement and lateral displacement of a foundation, and the construction cost is low are effectively solved. And the potential safety hazard is high.

The invention relates to the technical field of fuses, and provides a closed jet fuse, which comprises a porcelain bushing, an upper wire holder and a lower wire holder which are respectively and fixedly connected in a cavity defined in the porcelain bushing, the upper wire holder is used for being electrically connected with a first external wire, and the lower wire holder is used for being electrically connected with a second external wire; the two ends of the pipe body are fixedly connected with a first contact and a second contact respectively, the connecting base is arranged in the cavity, one end of the pipe body penetrates through the connecting base and is clamped with the connecting base, the pipe body abuts against the inner wall of the cavity through the connecting base, the first contact is in contact with the upper wire holder, and the second contact is in contact with the lower wire holder; the communicating pipes are arranged on one side of the porcelain bushing and communicated with the two ends of the cavity respectively, a sealing assembly is arranged at one end of the pipe body, and when the fuse wire is fused, the sealing assembly opens the pipe body so that the pipe body can be communicated with one end of the adjacent communicating pipe. The pipe body can be conveniently installed, the contact effect of the contact and the wire holder is guaranteed, the porcelain bushing structure is protected, and the service life is prolonged.

The utility model discloses a detachable sealed radiator which comprises a main body assembly and a fixing assembly, the main body assembly comprises a mainframe box, a mounting plate and a radiating plate, the mounting plate is located in the mainframe box, the radiating plate is arranged on the mounting plate, and the fixing assembly is arranged on the mainframe box and comprises a fixing part, a limiting part and a buffering part. The fixing piece is arranged on the mounting plate, the limiting piece is located on the fixing piece, and the buffering piece is arranged at the bottom of the mounting plate. The mainframe box has the advantages that when the mainframe box shakes, the radiator installed in the mainframe box has a buffering effect, the situation that due to violent shaking, the structure of the radiator is damaged or poor contact between the radiator and a heating element is caused is avoided, and therefore the heat dissipation effect can be continuously and stably achieved.

The utility model discloses a positioning device for an automatic pipe cutting machine, relates to the technical field of pipe cutting equipment, and provides the following scheme that the positioning device comprises a workbench, a fixed base is arranged above the workbench, a fixing mechanism is arranged on the fixed base and used for fixedly placing pipes, a movable base is arranged on the workbench, and the movable base is used for fixing the pipes. The fixed arc plate is arranged above the working table, is driven by the motor and is in sliding fit with the working table, and is used for cutting and positioning pipes, and a positioning mechanism is arranged on the movable base and is used for positioning a main body of a pipe structure. And in cooperation with a constraint arc plate which is driven by an air cylinder arranged on the movable base and internally provided with an auxiliary wheel, installation, placement and use of the pipe are facilitated, fixed constraint in the cutting process is facilitated, the precision influence caused by structure disengagement and shaking is avoided, and the using effect is remarkably improved.

The embodiment of the invention relates to a germanium-based negative electrode material as well as a preparation method and application thereof. The germanium-based negative electrode material comprises germanium-based composite particles and a carbon coating layer coating the outer surfaces of the germanium-based composite particles, pores of the porous polyaniline form continuous channels and spaces in the porous polyaniline, so that germanium-containing sediments are deposited in the pores of the porous polyaniline to form germanium-based composite particles; the mass percent of the porous polyaniline in the germanium-based composite particles is 15%-95%; the germanium-containing sediment at least comprises elemental germanium, and also comprises or does not comprise silicon-germanium alloy and / or tin-germanium alloy; in the germanium-based negative electrode material, the germanium-based composite particles account for 85%-99% by mass; the germanium elementary substance accounts for 0.1-80% of the germanium-based negative electrode material in percentage by mass; the silicon-germanium alloy or the tin-germanium alloy accounts for 0-15% of the germanium-based negative electrode material in percentage by mass; polar groups-NH <-> and = N <-> of porous polyaniline are used for promoting adsorption and intercalation of lithium ions or sodium ions, active sites of the negative electrode material are increased in the charging and discharging process of the battery, and the electrochemical activity is improved.

The utility model discloses a platform reinforcing device and an ore storage tank. The platform reinforcing device comprises a foundation structure and a reinforcing structure, the bottom end of the lower supporting column is connected with the foundation structure; the top end of the upper supporting column is connected with the upper platform beam; the bottom end of the upper supporting column is connected with the top end of the lower supporting column through the supporting connecting structure, the lower platform below the upper platform beam is located between the upper supporting column and the lower supporting column, and vibration isolation gaps are formed between the lower platform and the upper supporting column and between the lower platform and the lower supporting column. Resonance caused by the fact that the natural vibration frequency of the upper platform beam of the vibrating screen platform is close to the vibration frequency of a vibrating screen can be avoided, vibration of the upper platform beam of the vibrating screen platform is reduced, the vibration can be transmitted to a base structure, structural damage of the upper platform beam caused by vibration is avoided, reinforcing of the upper platform beam is achieved, and the service life of the vibrating screen platform is prolonged. And the vibration can be prevented from being transmitted to the weighing platform, so that the stable operation of the weighing device on the weighing platform can be ensured.