50results about How to "Meet maintenance needs" patented technology

The invention discloses a large-diameter nested anti-scour device, and relates to the technical field of hydrometallurgy, the large-diameter nested anti-scour device comprises: a support assembly, the support assembly is arranged on a flash tank seal head, and the height of the support assembly on the flash tank seal head can be adjusted; the anti-impact cone body is formed by nesting two semi-cone bodies; the fixing assembly is used for fixing the anti-impact cone on the supporting assembly; each semi-cone sequentially passes through the inspection manhole, then the two semi-cones are nested and assembled in the flash tank to form the anti-impact cone, the inspection manhole of the flash tank does not need to be transformed, the transformation difficulty and cost are reduced, the anti-impact cone is detachably installed on the supporting assembly through the fixing assembly, and the anti-impact cone is convenient to assemble and disassemble. The height of the supporting assembly on the end socket of the flash tank can be adjusted, so that the height of the anti-impact cone can be adjusted to adapt to different liquid level control requirements of the flash tank.

The invention relates to the field of grass mower equipment, in particular to a pure electric new energy hob type grass mower which comprises a frame, a driving system, a lithium battery power system, a control panel and a grass mowing system. The driving system is used for driving the frame to operate and driving the grass cutting system to cut grass; the lithium battery power system is used for prolonging the endurance time of equipment and providing stable power output; the control panel is used for controlling the grass mowing speed of the grass mower and the rotating speed of a cutter head of the grass mower by an operator; the grass mowing system is used for mowing a corresponding lawn; the lithium battery power system is composed of a lithium battery pack. The invention aims to provide the grass mower which is zero in emission, meets the modern environmental protection requirement and can meet the long-time lawn maintenance requirement.

The invention, which relates to the technical field of cable maintenance, discloses a cable lifting mechanism for line first-aid repair, comprising a base, a lifting mechanism, an auxiliary mechanism and a storage seat. The lifting mechanism comprises a motor, a gear transmission structure, a two-way screw rod, a lifting plate, a rack, a lifting plate, a rotating shaft, a fluted disc, a halfpace, a ball, a first bearing plate, a connecting rod, a second bearing plate and a universal self-locking wheel; and the output end of the motor is connected with the two-way screw rod through the gear transmission structure. According to the cable lifting mechanism for line repair, the motor drives the gear transmission structure to push the two-way screw to rotate, the two-way screw drives the fluted disc to rotate synchronously when rotating, and the fluted disc pushes the rack meshed with the fluted disc and the auxiliary mechanism clamping the cable on the top of the rack to move upwards when rotating, so that the cable is lifted; in addition, when the two-way screw rotates, the two sets of halfpace connected above the two-way screw move towards the left side and the right side of the base and extend out, and the cable can be conveniently overhauled.

The utility model relates to an efficient bolt dismounting and mounting device for a large ball mill, which belongs to the field of mill maintenance auxiliary equipment and comprises a mill platform, a guide rail and a pneumatic hammer component. The guide rail is parallel to the axis of the mill and is fixed on the mill platform; the pneumatic hammer assembly comprises a sliding block, a pneumatic hammer fixing assembly and a pneumatic hammer. The sliding block is connected with the guide rail in a sliding mode, and the pneumatic hammer is fixed to the sliding block through the pneumatic hammer fixing assembly. Each pneumatic hammer is provided with a sliding block, or all pneumatic hammers share one sliding block, and the guide rail is detachably fixed to the mill platform; according to the utility model, the bolts on the mill can be quickly disassembled or assembled, the working efficiency is improved, the labor intensity of workers is reduced, and the height and angle of the pneumatic hammer can be finely adjusted in the use process, so that the pneumatic hammer is accurately positioned with the bolts.

The invention relates to the technical field of new energy station maintenance, in particular to a new energy station maintenance system and method based on an intelligent sensor. A data processing module; the fault identification module is used for outputting sensor abnormal data, acquiring sensor state information, adjusting each sensor identification result according to the sensor state information, constructing a fault position identification model, and outputting fault equipment positioning according to the sensor abnormal data; and the fault maintenance module is used for constructing an equipment maintenance model, acquiring equipment maintenance information, updating a preset cumulative distance database according to the error output times of each piece of equipment maintenance information, and outputting equipment maintenance alarm information according to the updating times of the preset cumulative distance database. And the control module is also used for adjusting the equipment maintenance alarm information output sequence of each equipment according to the equipment maintenance alarm information output times. According to the invention, the troubleshooting time is reduced, and the maintenance efficiency is improved.

This utility model discloses a self-locking hydraulic pipe joint, including a male joint and a female joint. The male joint has a pin, and a sealing sleeve and a spring are slidably fitted onto the surface of the pin. Under the action of the spring, the sealing sleeve can cover the connecting hole on the pin. A locking ring groove is provided on the outer wall of the pin. The female joint has an axially sliding valve core inside, which is connected to the spring and used to close the inner flow channel. The female joint also has multiple radially arranged locking pins, which cooperate with the locking ring groove of the pin to achieve mechanical locking. During the insertion process, the pin pushes the valve core back and compresses the spring, while the sealing sleeve backs to connect the connecting hole with the inner flow channel for flow. The locking pins automatically spring into the locking ring groove to achieve self-locking connection. The locking pins are made of ferromagnetic material and can be quickly unlocked by magnetic attraction from an external magnetic ring. This utility model has a compact structure, automatic sealing, self-locking, and quick unlocking functions, is easy to operate, and is suitable for hydraulic systems with high sealing and high reliability requirements.

The utility model provides a lock catch and a display device, and the lock catch comprises a lock seat, a lock pin and a positioning piece. The lock seat is used for being connected with a first to-be-connected piece, a locking block is movably installed in the lock seat, and the locking block is provided with a locking position and a releasing position. The lock pin is used for being connected with a second to-be-connected piece, the lock pin is provided with a connecting plug inserted into the lock seat, and the connecting plug is provided with a limiting part and an avoiding part; the lock pin is further configured to be rotatable between a lock angle and a release angle. And the positioning piece is connected with the lock pin and is used for keeping the lock pin at a locking angle. When the locking block is located at the locking position and the lock pin is located at the locking angle, the limiting part corresponds to the locking block so as to prevent the lock pin from being separated from the lock seat; when the locking block is located at the locking position and the lock pin is located at the release angle, the avoiding part corresponds to the locking block, and the lock pin avoids the locking block through the avoiding part so that the lock pin can be separated from the lock seat. And when the locking block is in the release position, the lock pin can be separated from the lock seat.

The invention provides a sliding rail type theodolite maintenance supporting device and a using method thereof. The technical problem that when an existing side-down-placed support or a cushion block support is used for maintaining a medium-sized theodolite or a large-sized theodolite, the damage risk or the sliding risk exists is solved. Through cooperation of the bottom plate and the inclined clamping mechanism, the theodolite to be maintained can be reliably and firmly supported, and the risk that the theodolite to be maintained slides off or rolls to be damaged during maintenance is effectively reduced; the adjustable-width design mode can meet the supporting requirements of theodolites to be maintained of different models, the adjustable inclination angle can meet the maintenance requirements of different parts, the blank of the theodolite bottom maintenance system supporting device is filled, and the adjustable-width theodolite bottom maintenance system supporting device is high in universality and suitable for medium and large theodolites and also can be applied to small theodolites.

The utility model discloses a large-area concrete timing curing device which comprises a water receiving connecting pipe, one end of the water receiving connecting pipe is connected with the first end of a first water passing pipe through an intelligent switch valve, and the second end of the first water passing pipe is sequentially and axially connected with at least one second water passing pipe in an end-to-end mode. The second water passing pipes are connected through movable connecting pieces, the second water passing pipes and the first water passing pipes are connected through movable connecting pieces, the second water passing pipes can rotate relative to each other, the second water passing pipes and the first water passing pipes can rotate relative to each other, and a plurality of water outlet holes are formed in the outer side walls of the second water passing pipes and the outer side walls of the first water passing pipes. According to the utility model, various problems of the existing manual watering maintenance mode can be solved.

The utility model discloses a detachable silicon steel sheet maintenance frame, which comprises adjusting seats, an auxiliary supporting plate and a supporting frame, the two ends of the auxiliary supporting plate are both provided with the adjusting seats, telescopic rods are movably installed in fixing sleeves on the two sides of the adjusting seats, and the top ends of the two telescopic rods are both fixedly connected with the inner side of the supporting frame. Silicon steel sheets are arranged on the inner sides of the fixing grooves in the inner wall of the supporting frame, threaded columns are arranged at the bottoms of the two sides of the supporting frame, and connecting rods are connected to the portions, above the threaded columns, of the supporting frame through shafts. The modular design is adopted, so that the maintenance frame can be quickly disassembled and assembled, unique connecting devices are adopted between the frames, the stability of frame connection is ensured, potential safety risks caused by unstable connection are reduced, meanwhile, the size of the frame can be adjusted according to actual requirements, and the maintenance cost is reduced. Therefore, the maintenance requirements of silicon steel sheets of different specifications are met, and the applicability of the frame is improved.

The utility model relates to the technical field of box-type substation maintenance, in particular to an auxiliary maintenance device for a box-type substation, which comprises a hollow base, a rotating shaft is rotatably mounted in the base, two worms are coaxially connected to the rotating shaft through keys, and a motor for driving the rotating shaft to rotate is mounted on the rear end surface of the base; the motor drives the lead screw to rotate, along with rotation of the lead screw, the supports on the two sides can ascend and descend in the vertical direction, the supports can synchronously drive the tray to ascend and descend, when a worker works at a high place, the height of the tray is increased, then the worker can conveniently take and place tools, parts and the like, the overhaul requirement of the box transformer substation is met, and better convenience is provided for the worker. Through arrangement of the maintenance part, under the action of a gas detection sensor, harmful gas leakage can be detected in time, under the action of an audible and visual alarm, early warning can be performed in time when the harmful gas leaks, and then the safety in the box transformer substation maintenance process is improved.

The utility model discloses a movable box girder maintenance frame which comprises a portal frame, one side of the portal frame is fixedly connected with a connecting frame, the bottom of the portal frame is fixedly connected with a mounting frame, the bottom of the mounting frame is rotationally connected with a driving wheel and a driven wheel respectively, one side of the mounting frame is fixedly provided with a walking motor, and the output shaft end of the walking motor is fixedly connected with the driving wheel. A water tank is fixedly connected to the top of the mounting frame, a feeding cover is opened, a curing agent or water is added into the water tank, a stirring motor is started, the stirring motor drives a stirring shaft and stirring blades to rotate, liquid in the water tank is stirred, and the mixing uniformity of the curing agent in the water tank is guaranteed; and a curing agent and water are sprayed out through the spraying heads to cure the box girder, so that the labor consumption is reduced, pipelines do not need to be buried, the material use cost is saved, meanwhile, the maintenance workload is reduced, and the device is convenient to use.

A high-altitude protection device for transformer maintenance comprises a transformer box body, a plurality of safety rope lead rods are arranged on the edge of the top of the transformer box body, the safety rope lead rods comprise end lead rods, middle lead rods and corner lead rods, and lead rings are arranged at the upper ends of the middle lead rods and the corner lead rods. A parallel groove clamp is arranged at the upper end of the middle wire guide rod, a safety rope penetrates through a wire guide ring, the two ends of the safety rope are fixed to the parallel groove clamp, and a safety belt hanging ring of a maintainer is hung on the safety rope for maintenance. According to the transformer maintenance high-altitude protection device and the building method thereof, the safety protection requirement during maintenance of all faces of a large transformer can be met, hanging of the safety belt hook is not limited to one point any more, the safety belt hook can slide on the safety rope, the safety protection range is widened, and the safety protection flexibility is improved.

The utility model relates to the technical field of locks, in particular to an intelligent lock panel with an installation positioning structure, which comprises an inner panel and an outer panel, the inner panel and the outer panel are connected through horizontal positioning columns, vertical strip-shaped hole sites matched with the positioning columns are arranged on the inner panel and the outer panel, the positioning columns comprise an upper positioning column and a lower positioning column, and the upper positioning column and the lower positioning column are arranged in the vertical strip-shaped hole sites. The positions of the two ends of the upper positioning column and the lower positioning column can be adjusted up and down along the strip-shaped hole positions. According to the intelligent lock panel with the installation positioning structure, the inner panel and the outer panel are connected through the upper positioning column and the lower positioning column, the positions of the two ends of the positioning column can be adjusted up and down along the strip-shaped hole positions, and compared with the situation that a traditional positioning column is fixed to a base, large errors are likely to be generated; the relative positions of the inner panel and the outer panel are flexibly adjusted according to actual requirements, accurate positioning is achieved, the situation that the base is readjusted due to position deviation of parts is greatly reduced, the production difficulty and time cost are reduced, and the production efficiency is improved.

A bicycle maintenance lifter comprises a bottom frame and an operation table, a lifting air cylinder is arranged between the bottom frame and the operation table, a main supporting frame, a supporting frame connecting rod and a front fork fixing assembly used for clamping a front fork are rotationally arranged on one side of the operation table, and the front fork fixing assembly comprises a pointed column top head and a cylindrical top head. A middle-position supporting column and an auxiliary-position supporting column are rotationally connected to the operation table, contact brackets are movably connected to the middle-position supporting column and the auxiliary-position supporting column correspondingly, and buckling hooks used for clamping a hub are arranged on the supporting frame connecting rod and the auxiliary-position supporting column correspondingly. The main supporting frame is movably connected with a hub limiting jacking piece used for maintaining and fixing a hub. According to the utility model, bicycles in various forms can be erected and fixed in the checking and dismounting process, stable lifting of the operation position can be adjusted, various maintenance requirements are met, maintenance personnel can conveniently carry out maintenance work at the most suitable operation position, and the maintenance efficiency is improved.

The electromechanical maintenance device comprises a supporting table, rails are arranged on the supporting table and comprise the first rail, the second rail and the circular rail, the first rail and the second rail are arranged in a crossed mode and are perpendicular to each other, and the circle center of the circular rail coincides with the crossed point of the first rail and the second rail; a mounting table is slidably arranged on the supporting table, and a sliding assembly is arranged at the bottom of the mounting table and is in sliding fit with the rail. The whole maintenance device is simple in structure, convenient to operate, unlimited in installation environment and low in cost, and an automatic structure does not need to be adopted excessively; and meanwhile, the maintenance workpiece can move in different directions and can rotate, and the maintenance requirement of small-scale temporary electromechanical equipment is well met.

The invention provides a mutual inductor operation and maintenance method based on an improved K-means algorithm, and the method comprises the steps: collecting the operation time and an operation time ratio difference sequence of a mutual inductor, calculating the reliability of the mutual inductor through three-parameter Weibull distribution, and evaluating the stability of the mutual inductor through ADF statistics; the reliability and the stability are used as key indexes, a mutual inductor data set is constructed, kernel density estimation (KDE) and a local outlier factor (LOF) are adopted to optimize initial cluster center selection of a K-means algorithm, and particularly, by calculating a cluster center variation coefficient and a local reachable density, it is ensured that the dispersity and the density of cluster center distribution are reasonable. After a mutual inductor data set is subjected to clustering analysis through an improved K-means algorithm, the reliability and stability mean value of each cluster is calculated, weights are given according to user requirements, comprehensive scores are calculated, and the comprehensive scores are divided into five grades to evaluate the state of the mutual inductor. And finally, different operation and maintenance strategies are made according to the evaluation result, and the accuracy and reliability of the operation and maintenance of the mutual inductor are improved.

This application provides a pipe connection structure, including: a first pipe, a first flange, a first sleeve, a second flange, and a second sleeve; the first flange has a first opening and a plurality of first threaded holes, the first opening penetrating the first flange, and the first threaded holes penetrating the first flange and surrounding the first opening; the second flange has a second opening and a plurality of second threaded holes that mate with the first threaded holes, the second opening penetrating the second flange, and the second threaded holes penetrating the second flange and surrounding the second opening, and bolts passing through the first threaded holes and second threaded holes to connect the first flange and the second flange. The pipe connection structure provided by this application, by providing a first flange and a second flange, and connecting the first flange and the second flange with bolts, facilitates installation and disassembly, thereby meeting the needs of subsequent pipe maintenance.

The utility model discloses a ring main unit convenient to maintain, comprising a cabinet body, one side of the cabinet body is fixedly provided with a maintenance assembly, the maintenance assembly comprises a fixed frame, one side of the cabinet body is fixedly provided with a fixed frame, one side of the fixed frame is in sliding connection with a sliding block, one side of the sliding block is provided with a box door, one side of the box door is fixedly provided with a U-shaped frame, and the U-shaped frame is provided with a groove. The utility model relates to the technical field of ring main units. According to the ring main unit convenient to maintain, the box door and the side plate can be opened through the fixing frame, the sliding block, the box door, the U-shaped frame, the clamping plate, the fixing plate and the round rod, the interior of the cabinet body can be maintained more conveniently, the box door and the side plate can be opened at the same time, the maintenance space is more sufficient, and the maintenance requirements of maintenance workers can be met; and the side plates are simply and conveniently opened and fixed, so that the maintenance work can be completed in the cabinet body, the situation that the cabinet is wetted by rainwater is reduced, the situation that the cabinet is damaged by rainwater is avoided, and the use effect is better.

The utility model relates to the technical field of energy storage electric connection, in particular to an energy storage connector assembly, which comprises a board end connector and a wire end connector, the board end connector is provided with a board end plug and a board end electric connection element, the board end plug is provided with a board end plugging cavity, the board end electric connection element is arranged in the board end plugging cavity, and the wire end connector is connected with the board end plug. The wire end connector is provided with a wire end plugging cavity, a wire end plug is arranged in the wire end plugging cavity, the wire end plugging cavity is used for being matched with the board end plug, the wire end plug is provided with a wire end electric connection element, and the board end electric connection element is used for being matched with the wire end plug and being in conductive contact with the wire end electric connection element; a locking assembly is arranged on one side of the wire end plug and comprises a locking cavity, a locking sliding block and a spring bolt. According to the utility model, through efficient electrical connection performance and a stable and reliable locking mechanism, a high-performance connection solution is provided for an energy storage system.

This utility model discloses a speaker specifically for headphones, belonging to the field of loudspeakers. It includes a speaker assembly comprising a mounting panel with an integrally formed frame on its bottom surface, a voice coil mounted on the frame, and a diaphragm mounted on the voice coil; a mounting component located at the lower end of the speaker assembly, including a mounting part and a mounting base adapted to the shape of the headphone's earpiece; and a fixing component adapted to be mounted on the mounting panel and the mounting base. The headphone speaker of this application replaces traditional multi-screw fixing with the guide part, docking part, and tightening part of the fixing component. Positioning rods and sleeve rods facilitate quick assembly alignment, insertion rods and locking rods provide stable connection, and the tightening part can be manually locked and unlocked by turning a knob, requiring no tools and simplifying speaker assembly disassembly. In case of diaphragm collapse, users can easily disassemble and repair, improving maintenance convenience and service life, meeting long-term maintenance needs.

The invention provides a digital twinning-based power equipment comprehensive monitoring and predictive maintenance system and method. The system comprises a physical layer, a data acquisition and transmission layer, a digital twinning model layer, a data analysis and intelligent early warning layer and a decision support and visualization layer. The method comprises the steps of data acquisition, model driving, simulation, calculation evaluation, early warning and feedback optimization. According to the method, equipment faults are predicted in advance by means of a digital twinning technology and a machine learning algorithm. The system can accurately analyze the health state of the equipment and predict the remaining service life of key parts by continuously monitoring equipment operation parameters such as vibration, temperature and pressure and combining historical data and an equipment operation mechanism. Once the health index of the equipment is lower than the preset threshold value or the remaining service life is close to the safety margin, the system immediately and automatically gives an early warning, and maintenance personnel can arrange maintenance work in advance, so that unplanned shutdown caused by sudden failure of the equipment is avoided, and the production continuity is ensured.

The utility model discloses a dust-proof industrial personal computer case convenient to disassemble and assemble, and particularly relates to the technical field of industrial personal computers, the dust-proof industrial personal computer case comprises an industrial personal computer case main body with an opening at the top, two sides of the industrial personal computer case main body are provided with dust-proof filter screens, and the top of the industrial personal computer case main body is provided with a pair of top plates; each top plate and the industrial personal computer case body are each provided with a rotating springback assembly, each rotating springback assembly comprises a pair of fixing blocks, the fixing blocks are fixedly connected to the outer surface of the industrial personal computer case body, rotating rods are rotationally connected to the fixing blocks, supporting blocks are fixedly connected to the rotating rods, the supporting blocks are fixedly connected to the top plates, the rotating rods are sleeved with torsional springs, and the torsional springs are fixedly connected to the supporting blocks. The two ends of the torsional spring are fixedly connected to the opposite faces of the fixing block and the supporting block correspondingly, and the two sides of each top plate are fixedly connected with positioning blocks correspondingly. According to the utility model, the technical problems that the industrial personal computer case needs to be disassembled and assembled with the help of a professional disassembling tool, and the use loss is easily caused due to the use of more fasteners are solved.

The invention discloses a clock overhaul and maintenance support which comprises a support base and a first connecting rod arranged on the support base, and an equipment fixing piece is arranged at the tail end of the first connecting rod. The support base is provided with a first connecting rod, the first connecting rod is rotatably connected with the support base through a first rotary connecting piece, and the first connecting rod is rotatably connected with the equipment fixing piece through a second rotary connecting piece. The multi-directional adjustment of the equipment fixing part can be realized, various different operation requirements can be met, the attitude and orientation of the equipment fixing part and the clock fixed on the equipment fixing part can be conveniently adjusted, the maintenance is convenient, and various maintenance requirements are met; when the elastic pins are matched with all the wave trough sections, the positioning function can be achieved, the relative angle is limited, rotation of the elastic pins is avoided, and the positioning function is achieved.

The utility model provides a thermal power plant slurry pump maintenance tool which comprises a front fixing device, a rear fixing device, a connecting tool, a maintenance tool and a disassembling tool, the front fixing device is provided with a maintenance tool channel, the rear fixing device is provided with a disassembling tool channel, the front fixing device is connected with the rear fixing device through the connecting tool, and the disassembling tool is connected with the rear fixing device through the disassembling tool channel. And the disassembling tool is arranged on the rear fixing device through the disassembling tool channel. And the maintenance tool is arranged on the front fixing device through the maintenance tool channel. The device is simple in structure, convenient to install, safe and reliable, and can effectively meet the disassembly work of the thermal power plant slurry pump; the tool is low in cost, can complete one-time processing, meets the maintenance requirement, improves the maintenance efficiency, and ensures the safe maintenance work; the problems that the lining plate and the shell as well as the lining plate and the driving shaft are tightly combined and cannot be disassembled and the lining plate cannot be hoisted without hoisting points are effectively solved, and spare parts can be smoothly disassembled.

The utility model discloses a motor vehicle detection and maintenance platform which is formed by splicing at least two platform modules through splicing modules, each platform module can be used for bearing a vehicle to ascend and descend, each platform module comprises a bottom plate, moving wheels, a supporting footstand and a lifting assembly, two groove bodies are formed in the middle of the top end face of the bottom plate, and the moving wheels are arranged in the groove bodies. Slots are formed in the front and rear ends of the bottom plate; the moving wheels and the supporting foot bases are arranged at the four corners of the bottom end face of the bottom plate, the two lifting assemblies are arranged in two groove bodies in the top end face of the bottom plate respectively, the lifting assemblies are shear type lifters, bearing bases for bearing a vehicle chassis are arranged at the upper ends of the lifting assemblies, and anti-skid blocks are distributed on the bearing bases. The splicing module comprises a splicing plate base, an inserting plate and a stabilizing mechanism, wherein the splicing plate base is located between the bottom plates of the platform module. According to the utility model, multiple purposes can be realized, and the maintenance requirements of various vehicle types can be met.

The invention relates to a preassembled GIS (gas insulated switchgear) maintenance platform, which comprises a suspension type power-assisted manipulator, and the suspension type power-assisted manipulator is arranged above a maintenance platform cabin and is used for providing assistance during GIS maintenance; the top of the maintenance platform cabin is further provided with a camera device used for recording the maintenance process. A detection tool box is arranged in the maintenance platform cabin and located below the suspension type power-assisted mechanical arm. The maintenance platform cabin body is formed by welding cabin body outer walls; the outer wall of the cabin body is provided with a lifting ring for lifting the maintenance platform cabin body; an air shower is arranged at an inlet of the maintenance platform cabin, and a live detector is mounted beside the air shower; and the remote control device is in communication connection with the suspension type power-assisted manipulator and is used for controlling the suspension type power-assisted manipulator. The multifunctional maintenance platform has multiple functions, various maintenance items are integrated, and a good platform is provided for maintenance.

The utility model discloses a ball valve maintenance fixing device, and belongs to the technical field of valve maintenance. Comprising a maintenance base, a plurality of clamping mechanisms are arranged on the peripheral side of the upper portion of the maintenance base, and a conveying mechanism is arranged between the clamping mechanisms; the clamping mechanisms are the same in structure and comprise supporting columns, a supporting plate is arranged above the supporting columns, a telescopic motor is fixed to the supporting plate, an output shaft of the telescopic motor is connected with a telescopic rod, a pressure sensor is embedded in the upper portion of the telescopic rod, and a through hole is formed in the lower portion of the telescopic rod. And an electric push rod is arranged in the telescopic rod and directly faces the through hole. The ball valve maintenance fixing device adopting the structure is easy to operate and move, and can meet the use requirements of space limited or small enterprises; and the problem that the ball valve possibly falls off when a worker overhauls the ball valve can be avoided while the overhauling requirements of the ball valves of different specifications and sizes are met, and potential safety hazards are reduced.

This utility model belongs to the field of ventilation engineering technology for hydropower stations, specifically relating to a ventilation and safety tunnel exhaust tower layout structure. In this utility model, the lower floors of the main exhaust tower are only located outside the exhaust duct opening. The side walls of the lower floors of the main exhaust tower connect with the exhaust duct opening, allowing the internal space of the main exhaust tower to communicate with the exhaust duct. The upper floors of the main exhaust tower connect with the mountain via an extended platform. An auxiliary exhaust tower is fixedly installed on the extended platform. The main exhaust tower and the auxiliary exhaust tower are fixed as a whole, with their internal spaces interconnected. Rainproof vents are provided on the tops of both the main exhaust tower and the auxiliary exhaust tower. Exhaust fans are installed inside the exhaust tower or the exhaust duct, used to exhaust air from one end of the exhaust duct through the rainproof vents. This utility model reduces the overall engineering volume and construction cost of the exhaust tower without increasing the building height or ensuring sufficient exhaust area.

The application provides a processing tool and method for the jamming failure of a nuclear power main pump sealing chamber bolt, comprising a tool platform, a plurality of tool bolts for supporting the tool platform are arranged on the tool platform; the tool bolts are fixed to the tool platform through penetrating screws and fixed nuts arranged at the top ends of the tool bolts, the bottom ends of the tool bolts are fixed and penetrate the sealing chamber, the bottom ends of the tool bolts are also fixed with heat shield flanges; a magnetic drill is arranged on the upper side of the tool platform, the magnetic drill penetrates the tool platform and corresponds to the jammed bolt, a plurality of equal height blocks are arranged on the lower side of the tool platform, the equal height blocks are fixed to the outer sides of the tool bolts, and pads are arranged on the equal height blocks; the pads are fixed between the equal height blocks and the sealing chamber. The application prevents irreversible damage to the main pump sealing chamber and the heat shield flange, and causes significant economic losses.