104results about How to "Improve maintenance work efficiency" patented technology

The utility model discloses a compressor rotor hoisting guide device, and belongs to the technical field of compressors. The problem that the compressor rotor assembly is prone to being damaged in the hoisting process is solved. The guide device specifically comprises two sub-guide devices with the same structure, the two sub-guiding devices are symmetrically arranged on the two sides of the compressor rotor assembly; the sub-guide device comprises an L-shaped mounting plate, and one side of the L-shaped mounting plate is mounted on a lower shell of the compressor; the other side of the L-shaped mounting plate is connected with two roller mounting pieces; the two opposite side faces of the two rolling wheel installation pieces are each rotationally connected with a set of guide wheels. The two sets of guide wheels are clamped on the two sides of a thrust disc of the compressor rotor assembly respectively. According to the utility model, the thrust disc is limited between the two groups of guide wheels during hoisting, so that the whole compressor rotor assembly vertically descends to the lower shell of the compressor, and the damage to rotor blades, sealing tooth sheets, stator blades, sealing bodies and the like caused by collision due to swinging during installation is avoided.

The invention discloses an intelligent irrigation trolley with a layered water storage and automatic water replenishing structure, and relates to the technical field of bridge engineering, the intelligent irrigation trolley comprises a track and a water injection assembly, a moving trolley assembly is attached to the top of the track, and a water tank assembly and an irrigation assembly are installed at the top of the moving trolley assembly. The water tank assembly comprises a water storage tank, and a second electric valve is installed on the top of the outer wall of the water storage tank. According to the intelligent irrigation trolley with the layered water storage and automatic water replenishing structure, the movable trolley assembly is adopted, irrigation operation can be automatically conducted according to the temperature and humidity conditions of a beam surface during bridge construction and maintenance, and the maintenance work efficiency is improved; the water injection assembly is adopted, when the irrigation trolley is used and no water exists in the trolley, water can be automatically injected into the water storage tank, the use convenience of the irrigation trolley is improved, the water tank assembly is adopted, when the irrigation trolley moves, impact on the water tank assembly when water in the water storage tank shakes can be reduced, and the use stability of the irrigation trolley is improved.

The utility model discloses a diaphragm type alcohol injection pump and belongs to the technical field of diaphragm pumps, the diaphragm type alcohol injection pump comprises a rear shell and a front cavity shell, a driving structure is arranged in the rear shell, the front cavity shell is connected with the front end face of the rear shell in a sealed mode, a round opening is formed in a front plate of the rear shell, and a detachable diaphragm piece covers the opening; the upper end face and the lower end face of the front cavity shell are connected with an outlet one-way valve and an inlet one-way valve respectively. An alcohol sensor set is fixedly installed on the inner wall of the rear shell. When maintenance and overhaul are needed, the whole diaphragm body can be taken down for replacement through simple disassembly operation, meanwhile, the outer chuck serving as an easily-corroded part can also be conveniently replaced, the overall leakproofness of the pump can be ensured in the mode that the easily-corroded part is regularly replaced, the replacement process is simple and efficient, and the replacement efficiency is improved. The maintenance work efficiency can be greatly improved, and meanwhile, the alcohol sensor group can play a role in monitoring whether alcohol substances leak or not.

The utility model discloses a steel rail fat edge polishing device which comprises a fixed seat, a fixed part and a polishing mechanism, the fixed seat is provided with a guide groove, the fixed part is connected to the fixed seat, the fixed seat is fixedly connected to a steel rail, the polishing mechanism is connected to the guide groove and moves in the length direction of the guide groove so as to correspondingly polish a fat edge, and the polishing mechanism comprises a polishing piece. The edge of the grinding piece is designed to be inclined so as to be used for grinding the fat edge into a corresponding angle, rapid positioning of the steel rail fat edge is achieved, the consistency of the grinding size of the fat edge is determined, the grinding accuracy of the fat edge is ensured, and then the maintenance efficiency of the steel rail is improved.

The utility model provides a through channel supporting tool, which belongs to the technical field of railway vehicles and comprises a fixing plate, a supporting piece, a reinforcing piece and a bearing pad, and the fixing plate is mounted on a carriage bottom plate seat in a butt joint manner and is provided with a fixing assembly; the supporting piece is horizontally arranged, and one end of the supporting piece is fixedly installed on the fixing plate. The other end extends towards the end part of the carriage; the through channel is used for being supported on a supporting plate. The reinforcing piece is obliquely arranged and is positioned below the supporting piece; one end of the reinforcing part is fixedly mounted on the fixing plate, a mounting distance is formed between the reinforcing part and one end of the supporting part, and the other end of the reinforcing part is fixedly connected with the other end of the supporting part; the bearing pad is fixedly installed on the side, away from the fixing plate, of the upper end of the supporting piece. The lower end of the through channel abuts against the bearing pad. According to the through channel supporting tool provided by the utility model, the through channel does not need to be detached from the carriage for connection, so that the overhaul operation steps of the through channel are simplified, and the maintenance working efficiency of a railway vehicle is improved.

The floating access door comprises a floating door body, a sealing structure arranged at the bottom end of the floating door body, a pump cabin arranged at the bottom of the floating door body and ballast tanks arranged around the pump cabin, the ballast tanks are arranged in mirror symmetry along the middle of the floating door body, and the pump cabin is connected with the ballast tanks. Side face sealing structures are arranged on the two sides of the floating door body. The effects that the posture stability, the operation automation degree, the sealing effect, the drainage efficiency, the safety, the maintenance efficiency and the operation convenience of the floating door are improved are achieved.

The utility model discloses a machine room server safety protection device which comprises a cabinet body, heat dissipation assemblies are installed on the bottom wall and the top wall of the cabinet body, and a positioning assembly is fixedly installed on the inner wall of the cabinet body. The positioning assembly comprises sliding strips, the sliding strips are fixedly installed on the inner walls of the left side and the right side of the cabinet body, limiting blocks are fixedly installed at the rear ends of the sliding strips, limiting holes are formed in the front sections of the sliding strips, limiting pins penetrate through the limiting holes, and a protection assembly is installed between the two sliding strips. The problems that in the prior art, a server host is subjected to damping protection of multiple layers of buffering mechanisms, the server host is not prone to damage when a machine shell is impacted, but when a server body needs to be disassembled and maintained, due to the fact that one end of a fixing sleeve is fixedly installed on the inner wall of the machine shell, and a buffering piece abuts against the server host, the server host cannot be damaged easily are solved. And the server host cannot be quickly taken out from the shell when being disassembled, so that the maintenance operation efficiency is influenced.

The invention belongs to the field of maintenance equipment, and particularly discloses a power transformation equipment fault maintenance device which comprises a base and a maintenance platform, a lifting mechanism is installed above the base, a supporting platform is horizontally installed above the lifting mechanism, a horizontal moving mechanism is arranged on the supporting platform, and the maintenance platform is installed on the horizontal moving mechanism; the horizontal moving mechanism comprises a first horizontal transverse moving assembly and a second horizontal transverse moving assembly, the second horizontal transverse moving assembly is installed at the action end of the first horizontal transverse moving assembly, and the maintenance platform is installed above the action end of the second horizontal transverse moving assembly; the first horizontal transverse moving device is installed on the supporting platform. According to the device, the maintenance platform can be adjusted to transversely move in the horizontal direction while stable lifting operation can be achieved, so that the operation convenience is remarkably improved, and the maintenance efficiency is remarkably improved.

The invention discloses data transmission equipment based on natural resource investigation, and relates to the technical field of natural resource investigation, and the data transmission equipment comprises a protection assembly, the rear end of the protection assembly is provided with a supporting assembly, the inner wall of the protection assembly is provided with a lifting assembly, and the bottom of the protection assembly is provided with a solar assembly. And a clamping assembly and a data transmission equipment main body are mounted at the top of the lifting assembly. And the lifting assembly comprises a bottom plate, and a first mounting block, a fixing block, a first gear motor and a third L-shaped mounting block are mounted at the top of the bottom plate. According to the data transmission equipment for natural resource investigation, the lifting assembly is adopted, when the data transmission equipment is used, the data transmission equipment body can be automatically lifted out of the protection box, and the convenience of the equipment in use is improved; by adopting the solar module, when the data transmission equipment is used, the solar cell panel can be automatically driven to expand outwards or contract inwards, so that the convenience in use of the equipment is improved.

The present application belongs to the technical field of wind-solar energy storage, and particularly relates to a wind-solar energy storage device for use at a high position of a tower, comprising a fixed plate one, a fixed plate two rotatably connected to the rear end of the fixed plate one, the fixed plate one and the fixed plate two having an open and closed state, the fixed plate two being provided with an energy storage box, the fixed plate one being provided with a mounting seat, the top of the mounting seat being provided with an air inlet cylinder, the air inlet cylinder being provided with air inlets around, the air inlet cylinder being provided with triangular columns around, the triangular columns being provided with a pair of solar panels. The wind from different directions can blow to the power generation blades through the air inlets, improving the wind energy utilization rate. The solar panels, power generation blades and energy storage device are cooperated to store electric energy. The control driving motor is used to rotate the worm, worm gear and full gear. The wind-solar energy storage device can automatically and quickly ascend and descend, and manual climbing to a high position is not needed for maintenance. After the maintenance is completed, the wind-solar energy storage device can quickly recover, effectively improving the maintenance work efficiency.

The invention relates to the technical field of transport trailers, in particular to a tool transport trailer for maintenance. According to the technical scheme, the device comprises a bottom plate, a storage cabinet is arranged on one side of the upper portion of the bottom plate, a storage rack is arranged on the side, away from the storage cabinet, of the upper portion of the bottom plate, a right side door is installed on the portion, located on one side of the bottom plate, between the storage cabinet and the storage rack, and a fire extinguisher support and a main machine wheel fixing rod are arranged on the other side of the upper portion of the bottom plate; a rear door is arranged between the fire extinguisher support and the storage rack, a steering rod is arranged below one side of the bottom plate, and one end of the steering rod is connected with a traction rod. The requirement that a tractor is adopted for dragging under the full-load condition is met, moving is flexible, braking is reliable, parking is stable, the labor intensity of workers is relieved, and the overhaul operation efficiency is improved.

The invention relates to the technical field of line grounding protection, and discloses a special electricity testing and grounding device for an insulated cable terminal, which comprises a main body component, a connecting line, a cable and a connecting component, the connecting component is used for connecting the main body component, and the connecting component comprises a grounding accessory and a shell mounted outside the grounding accessory. The grounding fitting can be prevented from loosening due to up-and-down swinging caused by interference, the contact area is increased by adopting a surface-to-surface contact mode, and the grounding drainage capability is improved. The protection of the terminal connection part is ensured, the service life of the terminal is longer, the potential safety hazard is reduced, and the safety of operators is ensured. The insulation shield and the grounding ring protection cover are made of high-performance organic composite materials, have good insulation performance, anti-aging performance and flame retardant performance, improve the line insulation level, effectively prevent small animals from causing short-circuit harm to the terminal connection position, and play an insulation protection role.

The invention discloses a comprehensive maintenance method and system for construction of a composite wall of a comprehensive hub station through a cover-excavation top-down method, and relates to the technical field of rail traffic engineering construction. The technical problems of low maintenance efficiency, unbalanced temperature and humidity control, easiness in cracking and leakage and the like of the laminated wall under the working condition of top-down excavation are solved; the comprehensive system comprises mold curing, intelligent temperature and humidity control, cooling temperature control, heat preservation and moisture preservation and monitoring early warning, automation, refinement and traceability of the curing process are achieved, the moisture preservation and heat preservation period of the laminated wall is prolonged, the internal and external temperature difference is strictly controlled to be smaller than or equal to 25 DEG C, the concrete surface moisture content is controlled to be larger than or equal to 80%, and the impervious concrete curing period is controlled to be larger than or equal to 14 d. According to the construction method, the integrity and the anti-cracking and anti-seepage performance of the wall body are remarkably improved, the construction requirements of the large cover-excavation top-down composite wall are met, the construction convenience and the maintenance quality reliability can be effectively improved, and remarkable economic and social benefits are achieved.

A maintenance plugging tool for a biodiesel storage tank manhole belongs to the technical field of diesel tank maintenance tools and is used for plugging the storage tank manhole. According to the technical scheme, a sealing plate is a circular metal plate, the diameter of the sealing plate is matched with the inner diameter of the storage tank manhole, four positioning blocks are evenly distributed and welded to the circumferential edge of the outer wall of the sealing plate, positioning screw holes are formed in the positioning blocks, and a pressing plate and a sealing ring are a metal plate circular ring and a high-temperature-resistant silica gel foaming plate circular ring respectively. The circular ring outer diameters of the pressing plate and the sealing ring are respectively matched with the inner diameter of the storage tank manhole, the pressing plate is placed on the other side of the plate surface of the sealing plate, the sealing ring is placed between the plate surface of the sealing plate and the plate surface of the pressing plate, and the expansion bolt penetrates through the sealing plate and the sealing plate to be connected with the expansion screw hole of the pressing plate. The device is simple in structure and convenient to operate, combustible gas can be prevented from overflowing, the leakage point of the manhole flange of the storage tank can be maintained, safety accidents can be prevented, the efficiency of maintenance work is improved, the tank washing cost is saved, and the maintenance cost is reduced.

The utility model discloses a hydroelectric generating set pin dismantling tool, including: full thread screw, nut, sleeve, washer, the one end of full thread screw is fixedly connected with pin, the nut with the other end of full thread screw threaded connection, the sleeve is sleeved on the rod body of full thread screw and is located below nut, washer is located in the sleeve, washer is located in the washer. And the gasket is positioned between the inner wall of the sleeve and the rod body of the full-thread screw and is respectively connected with the inner wall of the sleeve and the rod body of the full-thread screw. The water-turbine generator set pin dismounting tool is simple in structure, convenient to use and capable of rapidly dismounting a water-turbine generator set pin.

The utility model discloses a box-type substation capable of rapidly replacing accessories, which comprises a power transformation box, air outlets are arranged on two sides of the upper part of the power transformation box, air inlets are arranged on two sides of the power transformation box, a box door is arranged on the front side of the power transformation box, bottom plates are fixed on two sides inside the power transformation box, and the bottom plates are fixed on two sides of the inner part of the power transformation box. A first sliding groove is formed in the upper surface of the bottom plate, and a bearing frame is mounted above the bottom plate; according to the box-type transformer substation capable of rapidly replacing the accessories, through cooperative use of the bottom plate, the first sliding grooves, the bearing frame, the fixing holes, the fixing bolts and the first sliding blocks, the bearing frame is used for bearing and installing equipment such as a transformer, the bearing frame can be fixed through the fixing bolts, and when internal accessories need to be replaced, the fixing bolts are fixed through the fixing holes; the box door is opened and the fixing bolt above the bearing frame is screwed out, so that the bearing frame can slide out, equipment above the bearing frame is exposed to the outer side of the power transformation box, a worker can quickly replace accessories, and the maintenance working efficiency is improved.

The utility model relates to a device for disassembling a built-in bearing of a roller, and belongs to the technical field of plate production unit equipment in the metallurgical industry. According to the technical scheme, the device comprises a rotating disc (1), a lead screw (2), a front baffle (3), a connecting shaft (4), pull claws (5) and a pull rod (10), one end of the lead screw (2) is fixedly connected with the rotating disc (1), the other end of the lead screw (2) is rotationally connected with the pull rod (10) through the connecting shaft (4), the pull claws (5) matched with built-in bearings are arranged at the two ends of the pull rod (10) respectively, and the lead screw (2) is in threaded connection with the front baffle (3); one end of the connecting shaft (4) is rotationally connected with the lead screw (2) through a rotating shaft (8), and the other end of the connecting shaft (4) is rotationally connected with the pull rod (10). The device has the beneficial effects that the built-in bearing of the roller can be conveniently and quickly dismounted, and the bearing is prevented from being damaged in the roller dismounting process.

The invention discloses a belt conveyor scattering height monitoring method and device, a storage medium and a terminal, and the method comprises the steps: obtaining a target scattering pile image from a monitoring camera, carrying out the denoising of the target scattering pile image, and obtaining a denoised image; binarization processing is carried out on the de-noised image, and a material scattering pile contour map is obtained; obtaining a target spreading pile height in the spreading pile profile diagram based on a calibration coordinate conversion relation; wherein a target material scattering pile in the target material scattering pile image is located below the discharging end of the belt conveyor, the monitoring camera is located on one side of the target material scattering pile, a backlight source is arranged on the other side of the target material scattering pile, and the backlight source covers the view field of the monitoring camera. The height of the material scattering pile of the belt conveyor can be monitored in real time and early warned, the maintenance work efficiency is improved, the maintenance time is shortened, and economic losses caused by serious faults of the belt conveyor due to the fact that the height of the material scattering pile is too high are avoided.

The present invention discloses a rail transit yard section plane layout structure suitable for narrow and long plots of land, including an operation warehouse, a maintenance warehouse, a car wash, a line in the section and a turnout built in the narrow and long plot for rail transit vehicles; the operation warehouse is arranged in a forward direction, the maintenance warehouse is arranged in an inverted opposite direction through the maintenance entry line, and the locomotive running line is arranged on the outside of the maintenance entry line; the car wash is arranged in a through-type manner on the outside of the entry line, and the two ends of the car wash line are connected to the entry line through a single turnout; the operation warehouse and the maintenance warehouse are respectively connected to the line and turnout in the section. The beneficial effects are: the vehicle has a short running distance when entering the maintenance warehouse, and the maintenance, operation and management efficiency are improved. All tracks and shunting operations are optimally arranged between the operation warehouse and the maintenance warehouse, and there are no tracks on the horizontal outside of the two large warehouses, which are more adaptable to narrow and long plots. The yard section layout reduces track laying and turnout laying compared to the traditional yard section, and at the same time, the corresponding engineering volume of roadbed, water supply and drainage, contact network, communication, electricity, etc. is reduced, effectively improving the land utilization rate.

The utility model relates to the field of air conditioner discloses a kind of special air conditioner of polycrystal silicon furnace rammer car, including return air cover, the return air cover is fixed in the outer wall right side of air conditioner body, the outer wall right side of return air cover is detachably provided with mounting frame, the inside fixed filtering screen of mounting frame, the top surface, bottom surface of return air cover is respectively fixed with fixed plate, the outer end of two fixed column is respectively fixed with baffle, the top surface, bottom surface of return air cover is respectively fixed with spring.In the utility model, through the cooperation of mounting frame, filtering screen, fixed groove, fixed plate, fixed hole, fixed column, baffle and spring, other sundries such as dirt, soot, dust can be effectively blocked to enter the inside of air conditioner body, ensure the clean of air conditioner body internal environment, while being beneficial to the staff with mounting frame, filtering screen quick dismounting, it is convenient to wash or replace filtering screen, without additional auxiliary tool, dismounting mode is simple and convenient, improve the convenience of operation.

The utility model relates to the technical field of installation of wall plate air sealing rings and air cylinder sealing rings of roots vacuum pumps, in particular to an installation tool for an air sealing ring of a roots vacuum pump, which comprises a spring steel band, a left handle, a right handle and a locking component. The structure is reasonable and compact, during installation, the roots vacuum pump air seal ring is sleeved with the air seal ring sleeve, then the air seal ring sleeve is placed in the spring steel band, and then the distance between the left handle and the right handle is reduced, so that the outer side of the roots vacuum pump air seal ring on the air seal ring sleeve is attached to the inner side of the spring steel band in the radial direction; the left handle and the right handle are fixed together through the locking assembly, the clamped air seal ring sleeve is right opposite to a wall plate cylinder body hole according to the installation direction, then the air seal ring sleeve and the roots vacuum pump air seal ring can be easily installed in a wall plate cylinder body by slightly beating the air seal ring sleeve with a palm, the operation is simple, the installation operation of the roots vacuum pump air seal ring is simplified, and the installation efficiency is improved. The installation difficulty of the roots vacuum pump air seal ring and the air seal ring sleeve is reduced, and the maintenance work efficiency is improved.

The application relates to the technical field of fan testing and overhauling, and discloses a fan overhauling system based on overhauling knowledge digitization, which comprises an overhauling knowledge module, an overhauling sequence module, an overhauling simulation module and a testing and overhauling module; wherein: the overhauling knowledge module is used for collecting fan overhauling data and performing digitization processing of overhauling knowledge; the overhauling sequence module is used for calculating the priority of each part to be overhauled and constructing an overhauling sequence; the overhauling simulation module is used for simulating fan overhauling through a digital twin system and acquiring an overhauling consumption factor of each part; and the testing and overhauling module is used for controlling testing and overhauling of the parts and controlling updating of the overhauling sequence; the application integrates advanced technologies such as overhauling knowledge digitization, overhauling task serialization and digital twin system simulation operation, and realizes fine and efficient execution of fan testing and overhauling work.

The application relates to the field of transformers and discloses an oil-immersed roll core transformer which comprises a transformer body and a top cover, the top cover is arranged on the transformer body through a jacking structure, a blocking structure is arranged between the top cover and the transformer body, suction structures are arranged on the left and right sides of the transformer body, a fastening structure is arranged between the top cover and the transformer body, when the internal damaged components of the transformer need to be repaired, the top cover can be directly lifted from above the transformer body through the jacking structure, the components in the transformer body are taken out, the top cover is moved upwards, the blocking structure is opened, meanwhile, the suction structures are driven to suck the insulating oil in the transformer body, the problem that the insulating oil in the transformer body is spilled in the process of lifting the top cover to take out the components is avoided, waste is reduced, the components are taken out by moving the top cover upwards, the difficulty of the maintenance work on the internal components of the transformer is greatly reduced, and the maintenance work efficiency is improved.

The utility model relates to the technical field of filters, in particular to a filter with a good sealing effect, which comprises a machine body, a pipeline fixedly connected with the outer wall of the machine body, a connecting pipe mounted on the outer wall of the pipeline, a sealing ring slidably connected with the top end of the pipeline and slidably connected with the bottom end of the connecting pipe, and a rubber ring slidably connected with the inner wall of the pipeline. The bottom end of the connecting pipe is fixedly connected with a conical surface pressing ring which is in sliding connection with the outer wall of the pipeline, the outer wall of the connecting pipe is fixedly connected with two upper lug blocks which are distributed in a mirroring mode, the sealing ring, the rubber ring and the conical surface pressing ring are arranged to effectively cope with pressure changes in different directions and sizes, and the pressure compensation capacity and stability of a sealing system are enhanced; the sealing ring is made of a special fluororubber material, the elastic deformation capacity can be kept within the extreme temperature difference range, the sealing failure risk caused by the heat expansion and cold contraction effect is effectively avoided, the multi-layer composite structure of the sealing ring achieves multi-path dissipation of abrasion energy through the pressure gradient dispersion design, and the service life of a sealing piece is prolonged.

The utility model discloses a heat dissipation structure of an active power filter (APF), which relates to the technical field of active power filters, and adopts the technical scheme that the heat dissipation structure comprises a box body, and a heat dissipation mechanism is arranged in the box body; the heat dissipation mechanism comprises a heat dissipation shell, the heat dissipation shell is arranged in the box body, a fixing plate is fixedly arranged in the heat dissipation shell, two motors are fixedly arranged on one side of the fixing plate, fan blades are fixedly connected to the output ends of the two motors, a limiting hole is formed in one side of the heat dissipation shell, and a limiting assembly is arranged on one side of the heat dissipation shell. The beneficial effects of the utility model are that the motor is started and drives the fan blades to rotate, so that heat in the box body is brought out by the fan blades through the heat dissipation holes, the filter screen on the other side of the box body is ventilated and intercepts dust at the same time, the heat dissipation efficiency is improved, the dust is prevented from entering the box body, and the pulleys at the top and the bottom of the heat dissipation shell roll on the sliding frame; the heat dissipation shell can be conveniently moved out of the box body, the heat dissipation mechanism can be conveniently maintained, and the maintenance work efficiency is improved.

The utility model discloses a concrete sleeper III-type elastic strip base plate mechanism which comprises a base plate, rectangular concave corners are formed in the four corners of the base plate in a penetrating mode, a fixing cushion groove is formed in the inner wall of the middle of each rectangular concave corner, a rubber protection cushion is bonded to the inner wall of each fixing cushion groove, and ejector blocks are welded to the two corners of the top of the base plate. An arc-shaped slope is arranged on the outer wall of the top of the top block, a slope chamfer is formed in one side of the top of the top block, a positioning groove is formed in the outer wall of the top of the base plate, fixing clamping grooves are formed in the four corners of the bottom of the base plate, and a rectangular fixing frame is installed on the inner walls of the fixing clamping grooves in a clamped mode; the rectangular concave corners are formed in the four corners of the base plate and matched with the clamped rectangular fixing frame arranged at the bottom, so that the base plate can be quickly positioned and fixed, the rubber protection pads are arranged on the contact surfaces of the inner walls of the concave corners, contact gaps can be greatly reduced, and the stability after installation is improved.

The utility model belongs to the field of electric power equipment provides a kind of electric power overhaul box, including box, box bottom end fixed mounting has support chassis, the bottom of box back is equipped with several fixed holes, box back is fixedly installed with placing rack near fixed hole, the inside of placing rack is provided with support mechanism, for the classification arrangement of electric wire, support mechanism includes several fixed baffle, fixed baffle equidistance fixed mounting is in the middle position of placing rack inner wall, fixed baffle one side top fixed mounting has support shaft sleeve, support shaft sleeve one side swingly installed has movable rod, movable rod one side fixedly connected has limit stopper, limit stopper and support shaft sleeve between being provided with reset spring;The utility model is separated into multiple areas by the fixed baffle of support mechanism in the inside of placing rack, cooperation movable rod, limit stopper can be clamped fixed to different electric wire, realize classification arrangement, solve electric wire winding problem from root, reduce short circuit, leakage risk.

The utility model discloses a current transformer with line protection, including current transformer body, the bottom of current transformer body and the top of base plate are in contact, the top inside of positioning stand is installed to the base plate, the front end of base plate is installed with mounting panel, the utility model discloses in the use process, place the line inside line spacing cavity, and the outer wall of line is wrapped through filling balloon, make filling balloon and flame -retardant layer all with the top outer wall of line and contact through the lower pressure connecting plate, adopt this kind of mode, can comb and limit wire, and then be convenient for the maintenance of later period, when the line spontaneous combustion, because the flame -retardant layer is in contact on the top outer wall of line, like this first through the flame -retardant layer and carry out flame -retardant, if the spontaneous combustion source is bigger, then will cause damage to the bottom of flame -retardant layer and filling balloon, filling the flame -retardant particle of filling balloon inside will further flame -retardant.

The invention relates to a thin-wall battery pack box which comprises a box body, the box body comprises a shielding cover and an accommodating shell, the accommodating shell comprises a module placement shell and an assembly placement shell, the shielding cover comprises a first cover plate and a second cover plate, and the first cover plate is matched with the module placement shell; the second cover plate is matched with the assembly placing shell; and the module placing shell and the assembly placing shell are jointly provided with a connecting assembly. The invention relates to the technical field of battery pack boxes. The device has the effects of improving the maintenance work efficiency and reducing the maintenance cost at the same time.

The invention relates to the technical field of fuel cells, and discloses a fuel cell system self-checking method, which comprises operation self-checking in a fuel cell operation process, and the operation self-checking comprises operation self-checking of an air pressure sensor group and an air supply equipment group. The operation self-inspection of the air pressure sensor group and the air supply equipment group comprises the following steps: respectively determining the current expected measured value of each air pressure sensor according to the current rotating speed feedback value of the air compressor; comparing the current measurement value of each air pressure sensor with the current expected measurement value, and judging whether the current measurement value of each air pressure sensor is abnormal or not; if the current measurement value of each air pressure sensor is not abnormal, the operation self-inspection of the air pressure sensor group and the operation self-inspection of the air supply equipment group pass; and if the air pressure sensors with abnormal current measured values exist in the air pressure sensors, fault judgment is performed on the air pressure sensor group and the air supply equipment group.