57results about How to "Flexible maintenance" patented technology

The invention discloses a cooling system and a server cabinet, and relates to the technical field of server cabinets, and the cooling system comprises a cooling module and at least two cooling branches. The cooling branch is provided with a control valve, a detection assembly and a cold plate module used for cooling working devices in the server. The cooling module is connected with each cooling branch, the cooling module is used for providing a cooling medium for each cooling branch, the cooling module comprises a control module, and the control module is used for being in communication connection with a server, a control valve and a detection assembly in each cooling branch; the control module is further used for receiving the working performance parameters of the working devices in the servers in the cooling branches and the cooling medium performance parameters detected by the detection assembly so as to control the opening degree of the control valves in the corresponding cooling branches. The cooling system solves the problem that the server node flow in the server cabinet cannot be adjusted in real time.

The utility model relates to the technical field of flood rescue equipment and equipment, and discloses a modularized flood rescue stretcher which comprises a motorboat, a stretcher body is movably installed on the inner side of the motorboat, buckles are arranged on the two sides of the inner wall of the motorboat and located on the top of the stretcher body, and a safety belt is arranged on the inner wall of the motorboat and located between the buckles on the two sides. Bandages are arranged in the middles of the two sides of the motorboat, and searchlights are fixedly installed on the two sides of the top of the motorboat. According to the modularized flood rescue stretcher, the detachable stretcher is arranged, so that the stretcher is quickly connected to the center of a lifeboat through four buckles (two buckles are arranged on each of the two sides). The detachability of the stretcher system further allows flexible replacement and maintenance of the stretcher, the wounded person can be carried away in time during rescue, the next stretcher is replaced for continuous rescue, and a more convenient wounded person transfer mode is provided. And by arranging a safety belt, the safety of the wounded is further improved, and the practicability of the device is effectively improved.

The invention discloses an intelligent clamp for an intelligent manufacturing production line and a clamping method, and belongs to the technical field of clamps. According to the method, a body is of a cone frustum structure, the lower end of the cone frustum structure is connected with a connecting flange, and an annular shell is arranged on the periphery of the cone frustum structure; the circular truncated cone structure is provided with a bonding expansion sleeve for clamping a workpiece and a calibration piece, a pull rod and a piston for implementing measurement are arranged in the circular truncated cone structure, various circuits and related parts are arranged in the annular shell, and the flange is used for being connected with a machine tool. The clamp can achieve the purpose of accurately monitoring the machining state and the part clamping force in the precise machining process in real time.

The utility model discloses a kind of piling machine anti-collision devices, it includes pedestal fixed to ground, connecting column being vertically installed on pedestal, and the anti-collision plate of array arrangement in horizontal and vertical direction between connecting column, anti-collision plate and connecting column are alternately arranged in horizontal direction, form a continuous protective wall.The pedestal is connected by chute and bolt connection piece to realize the fine adjustment of connecting column position;Connecting column adopts multi-section type screw joint structure, and height can be flexibly adjusted;Anti-collision plate both sides are equipped with staggered splicing connecting seat, through elastic buckle and connecting column sleeve joint, and equipped with handle to facilitate disassembly;Reinforcing beam plate is additionally arranged between upper and lower anti-collision plates to improve structural strength.The utility model realizes the flexible adjustment of protective height and width, supports local component quick replacement, is suitable for the safety protection of heavy load piling scene such as concrete member, effectively solve the problem that traditional integrated protective device is inconvenient to maintain, poor adaptability.

The invention discloses a secondary locking mechanism for a bottom door of a railway hopper car, which relates to the technical field of railway hopper cars and comprises a handle component, a first pull rod component, a lever fulcrum component, a second pull rod component, a rotating shaft component, a tension spring seat, a tension spring, a third pull rod component and a locking lever component. The handle assemblies are fixed to the two sides of a bottom frame, the lever fulcrum assembly is fixed to the lower portion of a vehicle, the two ends of the first pull rod assembly are movably connected with the handle assemblies and the lever fulcrum assembly through pin shafts respectively, and the second pull rod assembly is movably connected with the rotating shaft assembly through a pin shaft. The tension spring seat is fixed in the middle of the bottom frame, one end of the tension spring is sleeved with the tension spring seat, the other end of the tension spring is connected with the rotating shaft assembly, and the third pull rod assembly is movably connected with the rotating shaft assembly and the locking lever assembly through pin shafts. The two-stage locking mechanism is manually opened and closed, ground facilities do not need to be independently arranged, and the manufacturing cost is reduced.

The invention discloses a multi-modal large-model self-improved non-labeling harmful cause detection system and method, and relates to the technical field of operation field harmful content detection. According to the detection method of the system, explicit harmful causes easy to detect in unlabeled data are utilized to enhance the detection capability of implicit complex causes; the problems of annotation data scarcity and rapid evolution content adaptability in harmful mock detection are effectively solved.

The utility model discloses a protein water recovery device for fish meal production, which comprises a vacuum pump, a support frame and an evaporation tank arranged on the support frame, a heating component is arranged below the evaporation tank, a discharge pipe and a discharge valve are arranged at the bottom of the side wall of the evaporation tank, and the vacuum pump is communicated with the evaporation tank through an exhaust pipe. A supporting rod is arranged on the top wall of the evaporation tank, a water collecting tank is arranged at the top of the supporting rod, and the bottom of the water collecting tank communicates with the top of the evaporation tank through two filtering assemblies. The filter assembly comprises a first water pipe and a first valve which are arranged at the bottom of the water collecting tank, the bottom of the first water pipe is connected with a filter pipe, a filter screen frame is detachably and fixedly installed in the filter pipe, a screen taking opening is further formed in the pipe wall of the filter pipe above the filter screen frame, a pipe cover is detachably arranged in the screen taking opening in a sealing and covering mode, and the bottom of the filter pipe is further connected with a second water pipe; and the bottom of the second water pipe is connected with the top of the evaporation tank. The device can effectively combine filtering recovery and drying concentration operation of protein water so as to improve the recovery efficiency of the protein water.

The utility model relates to the technical field of bending machine, concretely relates to a straight and inclined integrated bending machine, including the processing platform, the detachable installation of straight concave mould and inclined concave mould is arranged on the upper surface of processing platform, the upper of straight concave mould and inclined concave mould is provided with straight convex mould and inclined convex mould respectively, the four corner parts of straight concave mould and inclined concave mould all are provided with sleeve, the sleeve is provided with annular groove, the central position of sleeve is fixedly installed with the vertical guide rod of setting, the annular groove is provided with spring, and the spring is around the guide rod, the four corner parts of straight convex mould and inclined convex mould all are fixedly installed with sliding block, and the sliding block is sleeved on the guide rod and is connected between the guide rod and slidingly, the sliding block is above the spring, and the upper of straight convex mould and inclined convex mould all is provided with the hydraulic cylinder for driving the convex mould downward movement and bending operation. The utility model does not need to frequently dismount and install the die, and has the advantages of straight and inclined integrated machining.

The utility model belongs to the technical field of circuit boards, and particularly relates to a circuit board maintenance workbench which comprises a maintenance table, a sliding groove is formed in the surface of the maintenance table, a sliding seat is slidably connected to the interior of the sliding groove, a stand column is fixedly connected to the upper portion of the sliding seat, an adjusting assembly is installed on the stand column, and the adjusting assembly is fixedly connected to the interior of the maintenance table. The adjusting assembly comprises an upper rotating ring and a lower rotating ring; the circuit board is overhauled through the magnifying lens, poisonous gas generated during tin soldering can be sucked into the filter through the adsorption holes by operating the air pump to be filtered, the positions of the magnifying lens and the cleaning pipe can be flexibly adjusted by pushing the sliding seat and rotating the rotating ring, and the view of an operator is prevented from being shielded; and meanwhile, the magnifying glass and the cleaning pipe can be used separately and can also be rotated and overlapped for use, so that various use requirements are met.

The utility model discloses an ecological floating bed for sewage treatment, which relates to the technical field of sewage treatment and comprises a plurality of groups of floating bed frames, and an assembling mechanism is movably mounted on the outer side of each floating bed frame. By the adoption of the structure, the installation frame on the planting barrel is inserted into the installation groove, the limiting rod makes contact with the inclined face of the installation groove and is squeezed, the limiting rod moves into the containing groove under the action of the limiting spring, stable installation of the planting barrel is achieved, the falling-off problem is avoided, only the adjusting frame needs to be pressed during disassembly, the adjusting frame slides on the installation frame, and disassembly is convenient. According to the mounting mechanism, the rigid limiting design of the limiting spring and the limiting groove is adopted, the mounting stability of the planting barrel is ensured, meanwhile, the convenience of dismounting, mounting and overhauling of the device is improved, and the device is convenient to use; according to the device, rapid mounting and dismounting of the planting cylinder can be achieved through simple operation, and the use efficiency and convenience are improved.

The present invention discloses an exterior wall structure with an assembled press-type self-locking phase change material layer, wherein the exterior wall structure is composed of a wall layer, a shaped phase change board layer and a heat insulation layer from the inside to the outside, wherein: the wall layer is provided with a substrate and a press-type self-locking base; the shaped phase change board layer is connected to the wall layer by a press-type self-locking base, and includes a shaped composite phase change wallboard and a composite phase change material, the shaped composite phase change wallboard is composed of a plurality of polycarbonate hollow boards assembled in a modular manner, and the polycarbonate hollow board is provided with a first groove and a second groove; the composite phase change material is filled into the first groove of the polycarbonate hollow board, and the composite phase change material is made of a phase change material using a porous adsorption matrix; the heat insulation layer includes at least one group of heat insulation wallboards, and the heat insulation board of each group of heat insulation wallboards is at least partially inserted into the second groove. The exterior wall structure with an assembled press-type self-locking phase change material layer of the present invention can meet the phase change temperature requirements of different application scenarios and is easy to load and unload.

The utility model provides a device is transported with sports teaching equipment, include: undercarriage subassembly, installation subassembly and storage subassembly, the upside surface of undercarriage subassembly is installed for installing the installation subassembly of undercarriage subassembly, the upside surface magnetic attraction of installation subassembly clamps has apron subassembly, undercarriage subassembly includes for moving undercarriage spare, the inside installation of undercarriage spare is used for depositing deposit spare, installation subassembly includes for positioning installation mounting plate, the upside surface of mounting plate installs positioning spare and fixed spare, storage subassembly includes for storing sports teaching equipment's storage box, compared with prior art, the utility model has the following beneficial effect: through setting undercarriage subassembly, when using, its cooperation with installation subassembly facilitates quick installation and disassembly, realizes the flexible combination and maintenance of transfer device, and undercarriage spare is equipped with and can easily shuttle between playground, gymnasium, classroom and different sites, ensure the convenience of transportation process, and the inside deposit spare is matched with storage subassembly and realizes the classified storage and safe deposit of sports equipment, convenient for user to use.

The present invention discloses a node-type slope monitoring system and method, which belongs to the field of slope monitoring and protection technology. The present invention uses optical fiber sensors that constitute each monitoring node in the monitoring node array to sense the vibration signal before the slope disaster occurs in real time, combines the satellite timing module and the data processing module to realize the real-time and high-precision collection and processing of the micro-vibration signal of the slope disaster, and performs subsequent effective event identification, source location, magnitude assessment and disaster warning through the cloud server, thereby realizing high-precision, low false alarm rate and accurate warning of slope disasters; the data preliminary screening module performs preliminary screening of the data before uploading through the STA / LTA algorithm, reduces the transmission pressure of the wireless transmission module, reduces the battery power consumption of the equipment, and reduces the storage of invalid data by the cloud server.

The invention provides an adaptive control method for an organic electroluminescent device, belonging to the field of adaptive control technology. The method comprises: capturing environmental information of an environment in which the organic electroluminescent device is located in real time, obtaining an environmental information set, and obtaining a device information set of the organic electroluminescent device, fusing the environmental information set with the device information set, and obtaining a comprehensive information set; inputting the comprehensive information set into a fuzzy control algorithm, obtaining a device adjustment plan, and adjusting the device operating parameters of the organic electroluminescent device; subsequently performing expected verification, obtaining a detailed fine-tuning plan according to the verification result, and performing detailed fine-tuning on the device operating parameters; analyzing the change trend of device performance based on the detailed fine-tuning result, predicting maintenance requirements according to the change trend, and updating the device adjustment plan according to the maintenance requirements, thereby realizing intelligent and flexible parameter adjustment and maintenance, and optimizing device parameters to ensure that the best performance is maintained under various environmental conditions.

The invention relates to the technical field of punching processing, in particular to an automatic feeding mechanism for a punching machine, which is based on a feeding seat of the punching machine and further comprises a material frame arranged along the feeding side of the feeding seat, and a material box is erected on the material frame; a feeding opening is reserved in the top of the material box, and a discharging opening is formed in the side, close to the feeding base, of the material box. A material guide groove extending to the feeding base is formed along a discharging opening of the material box. Through the precise lifting and relative position relation among the designed slope surface, the material ejecting mechanism and the material table, it is ensured that stamping pipe fittings can continuously and orderly slide to the material guide groove from the material box and finally are conveyed to the feeding base. By means of the design, the stability and reliability of the feeding process are improved, and faults caused by improper positions or accumulation of the pipe fittings are reduced.

The invention discloses an electrochemical detection device, belongs to the field of detection equipment, and is used for solving the problem of how to improve the disassembly and assembly convenience of an electrode tip so as to improve the accuracy and applicability of electrochemical detection. The electrochemical detection device comprises an electrode holder and an electrode tip, the electrode holder is provided with a first magnetic attraction part; the electrode tip is used for being connected with the detection electrode and is provided with a second magnetic attraction part, and the second magnetic attraction part is used for being connected with the first magnetic attraction part in a magnetic attraction mode so that the electrode tip can be detachably installed on the electrode base. According to the electrochemical detection device, through magnetic attraction connection of the first magnetic attraction component and the second magnetic attraction component, rapid connection and separation of the electrode tip and the electrode holder can be realized, so that the convenience of replacing the electrode tip and the accuracy and reliability of electrochemical detection are improved, and the applicability and flexibility of the electrochemical detection device are enhanced.

The utility model provides a connecting frame for building electrical equipment, relates to the technical field of building electrical installation structures, and aims to solve the problems that most connecting frames are lack of adjustable positioning assemblies, rapid disassembly, assembly and maintenance of electrical boxes are difficult to realize, and later overhaul or box body replacement is not facilitated. Comprising a bearing frame, a connecting bracket, a connecting carrier and an electrical connecting frame, an assembling side groove is formed in the side face of the bearing frame, and a threaded supporting column is rotationally arranged on the inner side of the assembling side groove; the connecting support is arranged on the side face of the bearing frame, and a shielding side plate is fixedly arranged on the inner side of the connecting support. The connecting carriers are arranged on the two sides of the connecting support, wiring side grooves are formed in the side faces of the connecting carriers, and connecting side grooves are formed in the side faces of the wiring side grooves; the electrical connecting frame is arranged at the top of the bearing bottom column; the electrical connection frame is slidably adjusted through the support of the sliding fulcrum shaft, so that the fit distance between the electrical connection frame and the connection support and the connection carrier is adjusted, and the electrical connection frame is arranged on the wall body to facilitate later line maintenance or box body replacement.

The invention provides an address allocation method of an energy storage battery management system, and relates to the technical field of energy storage batteries. The address allocation method of the energy storage battery management system comprises the following steps: step 1, autonomously identifying a host MBMU when a plurality of MBMUs are connected in parallel; 2, allocating slave MBMU addresses when the multiple MBMUs are connected in parallel; step 3, calibrating a battery cluster system address corresponding to the slave MBMU; and 4, battery cluster address polling and accuracy judgment are carried out. Based on the energy storage battery system, the invention aims to improve the capacity, the reliability, the energy efficiency and the flexibility of the industrial and commercial energy storage system through the parallel and distributed design, so as to better meet the complex energy storage and management requirements, and ensure that the multi-cabinet energy storage battery system can automatically identify the master-slave relationship when being connected in parallel; addresses and functions of all the modules are effectively distributed and managed, so that the configuration and maintenance process of the system is simplified, and the reliability and efficiency of the system are improved.

This invention relates to an online monitoring method and device for generator stator winding cooling water inlet pipes. The online monitoring method includes: sequentially numbering the stator upper layer bars, stator lower layer bars, annular leads, and outlet bushing water inlet pipes, and dividing them into zones according to the numbering order: upper layer bar zone, lower layer bar zone, annular lead zone, and outlet bushing zone; simultaneously acquiring the flow rates of normal and abnormal water inlet pipes in each zone in real time; and obtaining the flow rate deviation value of all abnormal water inlet pipes based on the flow rate value of a single abnormal water inlet pipe and the average flow rate of all normal water inlet pipes; determining whether the flow rate deviation value of the abnormal water inlet pipe is greater than a set value; if it is greater than the set value, issuing a maintenance reminder for the corresponding abnormal water inlet pipe according to its number. This invention can determine whether the water inlet pipe needs maintenance by monitoring the flow rate value online, thereby reducing the risk of generator insulation damage caused by water inlet pipe blockage and improving operation monitoring capabilities.

The present invention belongs to the technical field of wall-climbing robots, and in particular, relates to a magnetic gap wall-climbing robot, comprising a frame, a swing arm mechanism, an adsorption walking mechanism and two driving mechanisms, wherein the frame comprises a main frame and two sub-frames hinged to the left and right sides of the main frame by a hinge mechanism, the swing arm mechanism is installed at the front side of the top of the main frame, the adsorption walking mechanism comprises a driving wheel, a magnetic adsorption unit and an auxiliary magnetic wheel, the auxiliary magnetic wheel is installed at the rear side of the bottom of the main frame, the two driving mechanisms are respectively installed on the two sub-frames, and the bottoms of the two driving mechanisms are both provided with magnetic adsorption units, and two driving wheels connected to the driving mechanisms are installed on the two sub-frames, and the two driving wheels on each sub-frame are respectively arranged on both sides of the magnetic adsorption unit, and the horizontal position of the bottom of the driving wheel is lower than the horizontal position of the bottom of the magnetic adsorption unit. The magnetic gap wall-climbing robot of the present invention can take into account load capacity, obstacle crossing ability and curved surface adaptability.

The utility model relates to the technical field of heat preservation building materials, and provides a silicate pipe shell which comprises an outer pipe shell, a fixing assembly, a supporting frame and an inner pipe shell, and the fixing assembly, the supporting frame and the inner pipe shell are arranged on the side face of the outer pipe shell. The outer tube shell comprises a first tube shell, a sealing plate and a second tube shell, the first tube shell and the second tube shell can be fixed through a fixing assembly, and the sealing plate can be fixed to the side face of the first tube shell and the side face of the second tube shell through the fixing assembly. According to the silicate pipe shell, the first pipe shell body and the second pipe shell body are fixed through the fixing assembly, the complete silicate pipe shell can be prevented from being formed by excessive bending or twisting in the installation process, the requirement for bending or twisting of a pipeline can be reduced, the installation difficulty is lowered, and the operation difficulty of constructors is lowered; the shape of the pipeline can be kept stable, the heat preservation effect is ensured, meanwhile, the structural stability of the pipeline can be improved, deformation and vibration of the pipeline in the using process are reduced, and the service life of the pipeline is prolonged.

The utility model relates to the technical field of mechanical maintenance, in particular to a mudguard of a lifting platform, which comprises a base support and a plurality of bolts, two support legs are fixedly connected to two sides of the base support, and a guard plate is detachably connected to one side of each support leg through a part of bolts; the bottom of the base support is fixedly connected with a crawler belt, the lowest position of the protection plate is higher than that of the crawler belt, and each supporting leg comprises an outer cover and a welding plate. The protective plate is structurally divided into two parts, so that the damaged part is easier to replace, the maintenance cost is reduced, the phenomena that the structure is integrally welded, the damaged part is difficult to repair, only the whole part can be replaced, and the maintenance cost is increased are avoided, the protective plate can be automatically and accurately disassembled according to requirements to improve the working efficiency, the protective plate is light in structure, and the working efficiency of replacing the protective plate is improved. And when the equipment is repaired and maintained, more convenience and labor saving can be realized, the time is shortened, and the damage cost is greatly reduced.

The present invention provides a tapered clutch brake device, which belongs to the technical field of clutch; it solves the technical problems of short service life and poor stability of existing clutches; a tapered clutch brake device comprises a transmission shaft, which is axially extended; a driving wheel, which is arranged on the transmission shaft and axially fixed to the transmission shaft; a transmission seat, which is fixedly connected to the driving wheel and can rotate synchronously with the driving wheel, and the transmission shaft passes through the transmission seat; a brake seat, which is fixedly arranged and separated from the transmission seat, and the transmission shaft passes through the brake seat; a transmission member, which is circumferentially fixedly connected to the transmission shaft, the transmission member is located between the transmission seat and the brake seat and separated from the two, and the transmission member can move axially relative to the transmission shaft; the matching structure of the conical contact enables the transmission member to generate forces in both radial and axial directions when it contacts the transmission seat or the brake seat, and the transmission and braking effects are good. The entire structure realizes the combination of clutch and braking, and the structure is simple and compact.

The utility model relates to a lamp box mounting technical field especially a side hanging type lamp box, a side hanging type lamp box, including vertical fixed installation's riser, is equipped with the lighting window on the riser, the rotatable lamp box is rotatably installed on the riser through the shaft, the lamp for lighting is installed in the lamp box, and the lamp box can be maintained after turning over upwards. This side hanging type lamp box contains a piece of vertical fixed riser, and the riser is equipped with the lighting window for the light transmission, and the riser is connected with the lamp box that can turn over upwards through the shaft body, and the lamp box is internally provided with the lamp for providing the lighting, when daily using, the light of the lamp can be projected outward through the lighting window, satisfies the illumination or demonstration demand, when the lamp needs to overhaul, replaces or cleans and maintains, only needs to turn over the lamp box upwards, can let the internal lamp completely expose, need not to dismantle the lamp box whole, convenient operation and can complete the maintenance work fast, guarantees the continuous stable operation of the lamp box.

The utility model is suitable for the technical field of fireproof door hot pressing, and provides a fireproof door hot pressing device which comprises supporting frames, a conveying belt arranged between the supporting frames and a fixing frame arranged on the supporting frames. A group of hydraulic cylinders are symmetrically arranged on the fixing frame; the tail ends of piston rods of the two hydraulic cylinders are connected with the same hot pressing plate, a set of lead screw sliding tables are symmetrically arranged on the top side of the fixing frame, and the movable ends of the two lead screw sliding tables are connected with the same assembly frame. The same pressing roller is rotationally matched between the assembly frames; according to the device, real-time monitoring and uniform control of the temperature in the hot-pressing process are realized through the sectional structure and the infrared temperature measurement channels between the adjacent sections, and the accuracy and the stability of hot-pressing operation are ensured, so that the product quality is ensured; and meanwhile, due to the synergistic effect of the pressing roller and the hot pressing plate, the problem of uneven pressing of a single hot pressing plate is avoided, and the hot pressing stability and the product quality are further improved.

The utility model discloses a quick locking and anti-loosening of shell is realized through the rotary joint structure of front cover and rear cover, and the assembly is reliable. The innovative claw slide and the design of the buckle hole of the buckle arm make the installation frame containing the control panel and the battery compartment cover can be quickly disassembled and assembled with the main body without tools, and the degree of modularization is high, which greatly improves the production, maintenance and replacement efficiency. The shell adopts a honeycomb ventilation surface, effectively optimizes the airflow channel, reduces wind resistance and turbulence, and improves the stability and efficiency of air supply. The motor slot is recessed in the center of the rear cover, combined with the split battery compartment design, making the structure more compact and the weight distribution more optimal, especially suitable for cap wearing scenes. In addition, this design supports flexible installation methods and functional expansion, successfully solving the problems of low assembly efficiency, inconvenient maintenance, poor airflow and poor expansion of traditional fans.

The present invention is applicable to the technical field of gear processing, and provides a processing machine tool for large circular arc tooth line cylindrical gears, including a base, a processing unit is installed on the base, a clamping and rotating unit is installed on the side of the base away from the processing unit, and the top of the clamping and rotating unit clamps the circular arc tooth line cylindrical gear; the base includes two symmetrically arranged upper slide rails and two symmetrically arranged lower slide rails; the processing unit includes a slider slidably connected to the upper slide rails, a processing frame fixedly connected to the slider, a drainage groove symmetrically opened at the top of the processing frame, and two groups of arc sliding knife assemblies installed on the side wall of the processing frame. The device solves the problem that circular arc tooth line cylindrical gears are difficult to process with traditional circular gear processing knives, and achieves the effect of using modularly designed arc tracks to process circular arc tooth line cylindrical gears with larger diameters and higher heights.

The invention provides a municipal facility information technology management storage device and method, and the device comprises a cabinet, a plurality of rollers are embedded in the back of the cabinet, and the rollers of a grid structure are rotatably connected with the cabinet; a sliding groove is formed in the side portion of the machine cabinet and connected with a first driving assembly in a matched mode, and the first driving assembly is used for driving all the rollers to rotate to remove dust. The driving assembly I comprises a lifting plate, a gear I, a pedal plate and a spring I; a first gear is fixed to the side of the roller, a lifting plate is arranged on the side of the cabinet, and a plurality of teeth are arranged on the side of the lifting plate. Teeth of the lifting plate are meshed with the gear I; a pedal plate is fixed on the side part of the lifting plate; the pedal is slidably connected with the sliding groove, and a first spring is arranged at the bottom end of the lifting plate. According to the information technology management storage equipment, dust can be prevented from entering the cabinet, meanwhile, cleaning is more convenient, the filter screen can be effectively prevented from being blocked, and the service life of elements in the cabinet is prolonged.

The utility model discloses gift box packaging equipment which comprises a box body and an upper cover arranged at the position of an opening in the upper end of the box body. The other side edge of the upper cover is connected with a sealing edge, a magnetic inserting block is arranged on the sealing edge, and an inserting groove is formed in the joint of the outer side edge of the box body and the magnetic inserting block; through the cooperation of the magnetic inserting blocks and the inserting grooves and the magnetic adsorption connection of the metal blocks and the magnetic inserting blocks, the tight connection between the upper cover and the box body is ensured, so that a good sealing effect is achieved, and articles in the box are effectively protected; the buffering assembly in the box body comprises side edge buffering plates, limiting plates and a top buffering plate which are all of hollow-square-shaped hollow paperboard structures, internal and external impact force can be effectively absorbed, and articles in the box are protected against damage in an all-around mode; according to the gift box package, the beneficial effects of efficient sealing performance, all-around buffering protection, flexible connection and maintenance, stable supporting and reinforcing, environmental protection, sustainability and the like are achieved.

The utility model discloses an intelligent shielding device capable of freely combining frequency bands. The intelligent shielding device comprises an ARM configuration, an FPGA configuration, an information acquisition public board, a digital baseband signal source and a front-end radio frequency power amplifier. According to the utility model, the digital baseband signal source adopts a universal PCIE (Peripheral Component Interface Express) interface, customization requirements and replaceability can be met, compared with a traditional scheme, the cost is lower, digitization can meet legal constraint and supervision, the front-end radio frequency power amplifier adopts a universal modular design, personalized requirements are met, and multiple frequency bands share one set of hardware scheme, so that the system is more convenient to use. And the digital part and the radio frequency part of the product both adopt modular design, and are combined and customized through a mother board, so that the maintenance is flexible and the like.