856results about How to "Reduce intensity" patented technology

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention relates to the technical field of grouting simulation tests, in particular to a test device and method for simulating dynamic water condition composite stratum tunnel grouting, and the test device for simulating dynamic water condition composite stratum tunnel grouting comprises a model box, a water storage tank, a single-ring duct piece, a dynamic water simulation system, a grouting system and a data acquisition and analysis system; the model box is filled with a permeable medium, the single-ring duct piece is arranged in the permeable medium, the grouting system is connected with the single-ring duct piece, and grouting slurry is colored; the dynamic water simulation system comprises a water supply system and a drainage system, the data acquisition and analysis system is arranged on one side of the model box and used for acquiring and analyzing the state of grouting slurry in the model box, and the problem that grouting and seepage conditions of different seepage fields cannot be visually observed and simulated in a traditional grouting test is solved. The seepage field grouting simulation test is simplified, and the seepage field grouting effect in the pore stratum cannot be effectively researched.

The invention discloses a sand source resistance and control dynamic configuration method for a hole-to-wind sand area, and relates to the technical field of wind and sand protection, and the method comprises the following steps: collecting meteorological data, wind and sand data and historical sand source change data of the hole-to-wind sand area, and obtaining geographic information and vegetation coverage conditions of the sand source area through a remote sensing technology and ground monitoring equipment; by monitoring key parameters such as wind speed, wind direction and dust concentration in real time and combining high-resolution ground image data acquired by an unmanned aerial vehicle and a satellite remote sensing technology, real-time sensing and accurate analysis of sand source changes are realized, the efficiency and accuracy of data collection are improved, and the detection accuracy is improved. In addition, the prevention and control measures can be dynamically and accurately arranged according to the specific sand source, and by dynamically adjusting the arrangement and density of prevention and control facilities and optimizing the type and area of vegetation coverage, sand storm invasion can be more effectively prevented, the occurrence frequency and intensity of sand storm are reduced, and the efficiency and accuracy of sand source prevention and control are remarkably improved.

The invention discloses an IPN multi-element heat-conducting structural adhesive resistant to high and low temperature damp heat and a preparation method thereof, and belongs to the field of IPN multi-element structural adhesives. The structural adhesive is prepared by matching a component A and a component B according to a volume ratio of 0.9: 1.1-1, the component A is prepared from the following raw materials in parts by weight: 10 to 20 parts of silane modified polyether resin A, 10 to 20 parts of silane modified polyether resin B, 2 to 5 parts of amino-containing silane coupling agent, 0.1 to 0.5 part of catalyst, 1 to 2 parts of epoxy curing agent A, 0.5 to 1 part of self-made epoxy curing agent B, 0.1 to 1 part of catalyst, 1 to 3 parts of first aid, 0.01 to 0.03 part of color paste and 50 to 70 parts of first heat-conducting filler; the component B is prepared from the following raw materials: 10 to 20 parts of epoxy resin A, 5 to 10 parts of self-made epoxy resin B, 5 to 10 parts of reactive diluent, 50 to 70 parts of second heat-conducting filler, 0.1 to 1 part of second aid, 0.01 to 0.03 part of color paste and 1 to 1.5 parts of water. The adhesive is environment-friendly in component, has excellent heat-conducting property and excellent operation performance, is smooth in construction, and can be used for firmly bonding a base material.

The invention discloses a garden stratum deep soil sampling device and a sampling method thereof, and belongs to the field of stratum testing. A garden stratum deep soil sampling device comprises a drill rod and further comprises a drill bit fixed to the bottom of the drill rod; the sleeve rod is connected to the drill rod in a sleeving manner; the arc-shaped elastic pieces are circumferentially fixed to the drill bit at equal intervals, the upper ends of the arc-shaped elastic pieces are fixedly connected with the lower end of the sleeve rod, and the outer diameter of the arc-shaped elastic pieces is the same as that of the sleeve rod; the storage area is arranged between the arc-shaped elastic piece and the drill rod; the top plate is fixed on the sleeve rod; the bearing plate is fixed at the top end of the drill rod; by adopting the deformation sampling of the arc-shaped elastic sheet, the force required by the drill rod to be inserted into the deep part of the stratum is reduced, the drill rod can be conveniently inserted downwards, and the sampling accuracy is effectively improved.

The invention discloses comprehensive rock drift rapid tunneling equipment and a using method thereof.According to the tunneling equipment, a drilling and anchoring integrated multifunctional drilling machine is arranged on one side of a cantilever type tunneling machine body, and a temporary supporting mechanism is arranged above an oscillation cutting part; a deep hole is formed in a to-be-crushed rock by utilizing the multifunctional drilling machine, the deep hole is further expanded and cracked by utilizing the pulsating fracturing system, the strength of a rock mass is weakened, then the rock mass is milled by adopting the oscillating cutting part, and finally, the rock mass is anchored and protected by utilizing the multifunctional drilling machine and the temporary supporting device, so that a guarantee is provided for an operation environment. According to the equipment and the technology, a traditional roadway tunneling procedure is simplified into a continuous procedure, the tunneling efficiency of roadway rock mass is greatly improved, and meanwhile the cost is saved.

The invention discloses a super-junction MOSFET device and a preparation method thereof, and belongs to the technical field of semiconductors, and the super-junction MOSFET device comprises a first conduction type substrate and a first conduction type epitaxial layer located on the first conduction type substrate; a cellular region and a terminal region of the device are arranged in the first conductive type epitaxial layer; a plurality of second conductive type columns are longitudinally distributed in a cellular region and a terminal region in the first conductive type epitaxial layer; wherein the plurality of second conductive type columns distributed in the terminal area comprise a plurality of size types, and the second conductive type columns of different size types are alternately arranged. The structural design relieves the strength of a terminal electric field of the device in a reverse withstand voltage state, so that the electric field strength of a terminal region is lower than that of a cellular region, breakdown occurs in the cellular region, the situation that holes are injected into a silicon and silicon dioxide interface, and consequently charges on an oxide layer interface are increased is avoided, the reliability of the device is improved, and the performance of the device is improved. And meanwhile, the avalanche breakdown capability of the device is improved.

The invention belongs to the technical field of resource recycling, and discloses lead-zinc tailing ceramsite and a preparation method thereof. The lead-zinc tailing ceramsite is mainly prepared from the following raw materials in parts by mass: 100 parts of lead-zinc tailings; 20 to 30 parts of limestone tailings; 6-8 parts of active mullite nano powder; 1-3 parts of glass micro powder; and 8-12 parts of dry sludge powder. The invention also provides a preparation method of the lead-zinc tailing ceramsite. The lead-zinc tailings are used as main raw materials to prepare the lead-zinc tailings ceramsite, through compounding of the lead-zinc tailings and the limestone tailings, the synergistic effect of the lead-zinc tailings and the limestone tailings is achieved, resource utilization of the lead-zinc tailings and the limestone tailings is achieved, and good economic benefits and social benefits are achieved. The density grade of the ceramsite prepared by the invention is 600-900, the cylinder compressive strength is 6.8-9.8 MPa, the water absorption rate is 9.4-11.4%, and the ceramsite has relatively good strength and relatively low water absorption rate.

The invention discloses a processing method of a spinneret plate, which comprises the following steps: acquiring a plate material, and pretreating the plate material to obtain a blank of the spinneret plate; the blank is installed on an automatic punching machine tool, punching is conducted on the same position of the blank for at least three times, modification treatment is conducted after punching of the blank is completed every time, and the spinneret plate is obtained. The invention further discloses the lyocell spinneret plate. According to the spinneret plate, the same position in the spinneret plate blank is subjected to multiple times of punching and other operations, spinneret orifices formed through multiple times of punching are low in roughness and higher in size precision, meanwhile, the strength of materials in the orifices is enhanced, and the problems that in spinning production, yarn breaking and doubling are likely to happen, adhesion is likely to happen, and the plate replacement cleaning difficulty is large can be solved.

The invention discloses benzoxazine modified epoxy resin as well as a preparation method and application thereof. The benzoxazine modified epoxy resin comprises the following components in parts by weight: 40-80 parts of benzoxazine resin, 20-60 parts of epoxy resin, 7-22 parts of a curing agent and 0-1 part of a toughening agent. The high-temperature type benzoxazine modified high-temperature type epoxy resin particularly comprises benzoxazine resin with ethynyl and / or allyl and bisphenol A type or bisphenol F type benzoxazine resin, and naphthalene type epoxy resin or bisphenol F type epoxy resin containing two or more epoxy functional groups. The high-temperature-resistant epoxy resin can be mixed for use, such as four-functionality bisphenol F epoxy resin, on the premise that the mechanical strength of the high-temperature-resistant epoxy resin is reserved, the high-temperature resistance of an epoxy resin curing system can be kept, and the dielectric constant is remarkably reduced. The curing agent further improves the mechanical properties. The preparation and curing method is simple and convenient, the raw materials are easy to obtain, and the cured material has excellent characteristics of high-temperature-resistant, high-toughness and low-dielectric materials.

The invention belongs to the field of optimal design of soluble bridge plugs, and particularly relates to a method for simulating bridge plug corrosion in a variable-temperature and variable-pressure environment through a multi-field coupling model. The method comprises the following steps: S1, designing each part of the bridge plug; s2, establishing a stress corrosion model of the bridge plug; s3, establishing a high-temperature corrosion model of the bridge plug; s4, evaluating the corrosion rate of the bridge plug; s5, predicting the stress corrosion failure time of the bridge plug; and S6, carrying out secondary optimization and analysis on the bridge plug structure. According to the invention, the setting time of the bridge plug can be predicted and materials can be optimized according to engineering requirements under the condition of variable-temperature variable-pressure corrosion. According to the method, bridge plug performance evaluation and optimization links are designed, construction of a bridge plug alloy material corrosion model in a high-temperature and high-pressure corrosion environment is completed, and reproduction of a corrosion mechanism is achieved through a multi-field coupling corrosion model. Calculating the corrosion rate of the bridge plug and the failure time of the bridge plug caused by stress corrosion, predicting the setting failure of the bridge plug caused by the stress corrosion, and optimizing the structure of the bridge plug part.

The invention provides an air conditioner control method for zone adjustment, an air conditioner system and a storage medium, and the method comprises the following steps: when entering a heat exchange mode, obtaining personnel position distribution data in a current physical space; dividing the current physical space into more than two temperature control areas according to the personnel position distribution data; determining a target temperature value corresponding to each temperature control area; and according to the target temperature value, the corresponding air conditioner is controlled to conduct temperature adjustment on each temperature control area. By means of the air conditioner control method, the indoor temperature control area division accuracy and flexibility can be improved.

The utility model relates to the technical field of screw installation, in particular to a screw rotating driving device which comprises a supporting frame and a conveying track arranged on the supporting frame, a sliding seat used for fixing parts is arranged on the conveying track, and a position sensor and a vibration disc feeder are arranged on the two sides of the conveying track respectively. A cross beam is arranged above the conveying track, and a driving mechanism used for rotating screws is installed on the cross beam. A material groove used for discharging is formed in one side of the vibration disc feeding machine, supporting columns are fixed to the two sides of the bottom end of the material groove, the two supporting columns incline outwards, first guide rods are fixed to the two supporting columns, and L-shaped limiting rods are installed on the two first guide rods in a sliding mode. According to the device, after parts are fixed to the sliding seat, the parts are sequentially conveyed to the position below the driving mechanism, the screws conveyed to the position above the parts through the vibration disc feeding machine are sequentially installed into the parts in a rotating mode through the driving mechanism, so that automatic installation of the screws is achieved, and the strength of manual operation is relieved.

The invention discloses a high-temperature and high-pressure fluid lubrication rotating plane frictional wear testing device, and belongs to the technical field of extreme working condition tribology testing. The device is characterized in that a lifting device and a loading cylinder are simultaneously fixed at the top of a test stand bracket, a piston rod of the loading cylinder is connected with a tension sensor and a water-cooling loading shaft, and the water-cooling loading shaft is connected with a lower sample piece (static ring) in a high-temperature and high-pressure test cavity through a spherical universal joint; the oil-cooling main shaft is fixedly connected with an upper sample piece (moving ring) in the high-temperature and high-pressure test cavity through a locking nut, so that the axial load of the water-cooling loading shaft and the oil-cooling main shaft in a non-concentric state can be uniformly loaded, and the end surfaces of the upper sample piece and the lower sample piece can be automatically attached to each other. The upper part of the high-temperature and high-pressure test cavity is connected with the water-cooling jacket, and the lower part is connected with the bearing cavity. High pressure of the test chamber is guaranteed by a high-pressure water station system, and high temperature is adjusted and controlled by an electric heater and a water cooling jacket. The device can realize the rotary sliding friction wear test of a friction pair in a high-temperature and high-pressure water environment.

The present invention discloses a laminating and pressing process for a special-shaped sheet material and a film, comprising a base, the top of which is fixedly connected to a support frame, and further comprising: a hydraulic cylinder, which is fixedly connected to the top of the support frame, the bottom end of which is fixedly connected to a lifting plate, the bottom of which is fixedly connected to a pressing plate, the top of which is fixedly connected to a fixing plate, and the top of which is fixedly connected to a blowing assembly; and a mounting assembly, which is slidably connected to the top of the base, and the present invention relates to the field of laminating and pressing technology. The laminating and pressing process for a special-shaped sheet material and a film can control the extrusion of the pressing plate on the film, and prevent the situation where the pressing is not transmitted due to insufficient contact when the pressing plate contacts the film, thereby ensuring the accuracy of the pressing of the pressing plate on the film, and the auxiliary assembly can roll the film after the pressing of the mounting assembly on the base, and prevent the auxiliary assembly from contacting the film with excessive force, which may cause damage to the film.

The invention relates to the technical field of gas-solid phase catalytic reaction equipment, and discloses a gas-solid phase catalytic reactor, which comprises a reactor body and a plurality of catalyst bed layers arranged in the inner cavity of the reactor body, the plurality of catalyst bed layers are arranged at intervals along the flowing direction of reaction raw materials, the discharge side of each catalyst bed layer is provided with a quenching filler layer, and the discharge side of each catalyst bed layer is provided with a quenching filler layer. The quenching filler layer is arranged to be capable of quenching flames generated by the reaction raw materials; according to the invention, through a plurality of catalyst bed layers arranged at intervals, the intensity of gas-solid phase catalytic reaction is directly reduced, so that combustion explosion of combustible gas in reaction raw materials caused by release of excessive heat is avoided; the quenching filler layer is used for quenching flames possibly generated by reaction raw materials, so that combustible gas and oxygen can be subjected to a gas-solid phase catalytic reaction within the explosion limit, the reaction rate is increased, the reaction efficiency is improved, the economic benefits are further improved, and the device has the advantages of being safe and reliable.

The utility model relates to an assembly type damping composite infilled wall with an energy dissipation damping part maintenance device. The energy dissipation damping piece can be sealed, and fire prevention, corrosion prevention, water prevention, heat preservation and sound insulation can be achieved. The composite filled wallboards are installed in the structural frame and connected with the structural frame, the structural frame comprises frame columns and frame beams, and an energy dissipation damping part is connected between the upper composite filled wallboard and the lower composite filled wallboard. A slidable connecting device is installed on the outer side of the energy dissipation damping part and comprises a cover plate, a sliding groove and a sliding rail, the sliding rail is arranged on the inner side of the cover plate, and the sliding rail is embedded in the sliding groove in the inner side of the cover plate and fixedly connected with the embedded steel plate or the embedded steel bar on the lower portion of the upper composite filling wall plate. The slidable connecting device is convenient to mount and dismount, and convenience is provided for overhaul, maintenance and replacement of the energy dissipation damping part; and meanwhile, the fireproof, anti-corrosion, waterproof, heat-insulating and sound-insulating effects can be realized.

The invention provides a hydrogen combustion device and system, belongs to the technical field of combustors, and aims at solving the problem that high-concentration oxynitride is generated due to the fact that the combustion flame temperature of an existing hydrogen combustion device is high. The device comprises a burner shell, a burner cover and a burner cover, a cavity is formed in the burner shell, the burner shell is connected with a boiler body, and the cavity is communicated with a hearth in the boiler body; the combustor shell is connected with a hydrogen header pipe, a flue gas header pipe and an air header pipe; a pre-combustion assembly and a post-combustion assembly; the pre-combustion assembly is used for spraying hydrogen and air into the hearth and mixing the hydrogen and the air to form first mixed gas; the rear combustion assembly is used for spraying hydrogen, flue gas and air into the hearth and mixing the hydrogen, the flue gas and the air to form second mixed gas; the first combustion assembly comprises an ignition part, the ignition part is used for igniting the first mixed gas, and the ignited first mixed gas is used for igniting the second mixed gas.

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 embodiment of the invention provides a track flaw detection vehicle frame and a flaw detection car, the flaw detection vehicle frame comprises an outer frame, a frame structure composed of a plurality of beam bodies, two end beam groups respectively serving as one end of the vehicle frame; the middle beam group is positioned between the two end beam groups and is fixedly connected with the end beam groups; the end beam set comprises end edge beams, and the middle beam set comprises middle edge beams. The sleeper beam is arranged at the joint of the end beam group and the middle beam group; the ends of the end edge beams and the ends of the middle edge beams are fixedly connected with the sleeper beams. According to the track flaw detection frame provided by the embodiment of the invention, a traditional frame is modularly divided, compared with machining of an overall frame, machining of small-unit modules can achieve optimized design and light-weight design, and for machining of the modules with small sizes, hoisting, transferring and personnel machining, the machining efficiency is greatly improved, and the machining cost is reduced. And the difficulty is obviously reduced.

The utility model discloses a cleaning assembly and equipment, the cleaning assembly is used for cleaning equipment, the cleaning assembly comprises a cleaning part and a flexible protection part, and the cleaning part comprises a first side and a second side along a first direction; the flexible protection part covers the surface of the cleaning part and is located on at least one of the first side and the second side. The utility model solves the problems that if the extended part of the roller collides with a wall or furniture, the wall or furniture may be damaged, and even the roller is damaged under the action of impact force.

The invention belongs to the field of non-vision field imaging, and particularly relates to a non-vision field imaging system based on filtered back projection and a reconstruction method. Comprising the following steps: 1) setting scene parameters based on a non-vision field imaging requirement; the imaging scene in the step 2) is mainly composed of pulse laser, a shielding wall surface, a relay wall surface, objects outside the sight line, a high-time-resolution device and the like; (3) the pulse laser is focused on the relay wall surface, the pulse laser is emitted, and dot matrix scanning is carried out; (4) the relay wall carries out diffuse reflection on the pulse laser, and the pulse laser irradiates the surface of the hidden object; 5) an imaging module collects diffuse reflection information to obtain an intensity-time 2D space image; and 6) the data processing module carries out filtering back projection calculation processing to obtain hidden object surface information corresponding to each voxel, and outputs the information as a reconstructed image. The method is low in cost, low in hardware equipment requirement and convenient to implement, and the generated reconstructed image is visual.

The invention discloses a graphene-modified flame-retardant polypropylene material and a preparation method thereof. Graphene is dispersed through maleic anhydride grafted polypropylene to form a master batch, and flame retardants such as piperazine phosphate and sulfonyl bis(ethane-2,1-diyl)bis(diphenylphosphine oxide) are added; the graphene-modified flame-retardant polypropylene material is prepared by master batch-melting-smelting, the dispersibility of graphene in polypropylene is enhanced, the graphene is evenly dispersed in the mixed system, and the dispersion and combination of the flame retardant in the polypropylene matrix are further enhanced; the good barrier properties of graphene and the intumescent flame retardant produce a good synergistic effect, so that the compactness of the carbon layer formed by combustion is enhanced, and the flame retardant performance of the material is significantly improved.

The utility model discloses a bending device for bracket processing, which relates to the technical field of machining, and comprises a workbench and a bending mechanism, a bracket needing to be bent is clamped and fixed through a fixing frame, in the bracket bending process, a rotating shaft is driven by a motor to further drive the bracket to move and feed, and the bracket is bent by adjusting the length of a telescopic pipe. In the feeding process, impurities on the surface of the support are scraped off through a friction scraping plate, a support cleaning agent stored in a liquid storage box enters the limiting blocks through telescopic pipes and is sprayed to the surface of the support through through holes, stubborn impurities on the surface of the support are further removed, and the cleaning effect of the support is improved. The problem that the support is bent unevenly or deformed due to impurities is solved, the support is heated through the electromagnetic heating plate, the hardness and strength of materials are reduced, meanwhile, a cleaning agent is dried, and it is prevented that the cleaning agent stays on the surface of the support, secondary pollution is caused to the support, and the quality of the support is affected.

The invention relates to the field of metal processing, and discloses a processing method of high-strength medium alloy carburizing steel, which comprises the following steps of: assembling parts and welding to form a product: aligning all the parts forming the product through corresponding grooves in a contact manner, and assembling all the parts to be welded to form a product prototype; carrying out integral preheating treatment on the to-be-welded parts which are integrally placed and assembled before welding, wherein the preheating temperature is 200-250 DEG C; after the temperature of all the to-be-welded parts is reached, welding the groove contact edges of the two to-be-welded parts which are placed and contacted one by one, so that a welding seam with a certain width is formed between the base materials of the two parts; all to-be-welded parts of the whole product are continuously heated in the welding process, and it is guaranteed that the temperature of the to-be-welded parts is always kept at 200-250 DEG C in the welding process; dehydrogenating the whole product; performing stress relief annealing on the whole product; and integrally tempering the product. According to the scheme, the overall performance of a welding product is effectively improved, and the performance homogenization of welding seams and part base metal is effectively improved.

The utility model discloses an adjustable door handle which comprises a handle body, a shell and a rotating shaft, the rotating shaft is horizontally installed at the edge position of the handle body, one end of the rotating shaft penetrates through the middle position of the side wall of the shell and is rotationally connected with the shell, and a power assisting assembly is installed on the inner wall of the shell; the power assisting assembly comprises a motor, a gear box and an electric control unit, the gear box is vertically embedded in the inner side wall of the shell and fixedly connected with the shell through screws, the power assisting assembly is carried in the adjustable door handle and used for assisting a user to rotate the door handle, and the electric control unit is triggered when the door handle drives the rotating shaft to rotate; according to the door handle, the rotating shaft is driven to rotate, then the motor and the gear box are started to assist the rotating shaft, the force needed for rotating the door handle is reduced, the use experience of a user can be greatly improved through the design, and meanwhile the door handle can greatly help some infant users and people with myasthenia type physical diseases.

The invention relates to the technical field of sealing ring assembly, in particular to a miniature sealing ring automatic assembly device which is characterized in that a placement box is fixedly mounted at the top end of the assembly device, a supporting round rod is fixedly mounted in the placement box, and a center disc is fixedly mounted at the top end of the supporting round rod; a positioning disc is fixedly installed at the top end of the left bending rod, firm rods extending downwards are fixedly installed at the front end and the rear end of the positioning disc respectively, a sleeve shaft located between the two firm rods is installed on the positioning disc, a plurality of sealing rings are arranged on the sleeve shaft, and first telescopic rods are fixedly installed at the lower ends of the two firm rods respectively. And pressing rings are slidably installed at the lower ends of the two first telescopic rods correspondingly, a discharging assembly is arranged on the right side of the center disc, and a self-rotating disc is arranged on the outer circle face of the center disc. According to the device, the sealing ring can be assembled, the labor cost is reduced, accurate assembly of the sealing ring is ensured, and the production efficiency and the product quality are greatly improved.

The invention relates to foldable electronic equipment, which comprises a first main body, a second main body and a rotating shaft, and is characterized in that the first main body and the second main body are rotatably connected through the rotating shaft, so that the foldable electronic equipment has an unfolded state and a folded state, and the first main body comprises a first radiator, a first feed part and a first grounding part; the first feed part and the first grounding part are electrically connected to the first radiator respectively, so that the working frequency band of the first radiator at least covers the first frequency band, the second main body comprises parasitic branches, and in the folded state, the first radiator and the parasitic branches are stacked at intervals in the first direction; the projection of the first radiator in the first direction at least partially coincides with the projection of the parasitic branch in the first direction, positive integer multiples of 1 / 2 wavelength corresponding to the first frequency band jointly form a first length number set, and the length of the parasitic branch is within the first length number set; therefore, the parasitic stub can have a resonance mode corresponding to a 1 / 2 wavelength current mode of the first frequency band.

The invention relates to the technical field of motorcycles, and particularly discloses a steel pipe punch forming device for a motorcycle frame, which comprises at least two punching machines, a conveying line is arranged between the adjacent punching machines, the conveying line has a speed regulation function, and an inductive switch is mounted at the discharge end of the conveying line. A steel pipe forming system comprises a steel pipe punch forming device for a motorcycle frame and further comprises a laser cutting machine, a blanking grid, a material frame, a discharging guide assembly, a discharging assembly, a part taking mechanical arm, a bending machine and a discharging mechanical arm. The discharging guide assembly comprises a first channel and a second channel which communicate with each other, the first channel directly faces the discharging port, and the first channel is of a big-end-up structure; the discharging assembly comprises a conveying belt and a partition piece. The scheme is used for solving the problems that steel pipes are easy to damage and workers are easy to touch the tips of the workpieces to be injured when taking the workpieces when the workpieces are transferred between adjacent procedures of punch forming of steel pipes for motorcycle frames at present.

The invention relates to the field of insole materials, in particular to a wormwood fiber and polyurethane mixed insole material and application of the wormwood fiber and polyurethane mixed insole material. Comprising the following components: 38 to 54 parts of diisocyanate, 74 to 115 parts of polyether polyol, 7 to 21 parts of modified wormwood fiber, 0.7 to 1.4 parts of a catalyst, 1.2 to 3.4 parts of a chain extension enhancer, 1.3 to 2.6 parts of a foaming agent and 0.6 to 1.2 parts of a foam stabilizer. The invention discloses an insole material. The insole material is prepared by synthesizing a polyurethane material in which wormwood fiber participates. The insole material prepared by the invention not only can maintain higher elasticity and strength, but also can have long-term antibacterial activity.