399results about How to "Won't fall off" patented technology

The invention provides a vapor deposition silicon-carbon composite material for in-situ growth of interconnected carbon nanotubes and a preparation method of the vapor deposition silicon-carbon composite material, and belongs to the technical field of lithium ion battery negative electrode materials. The preparation method comprises the following steps: firstly, complexing and neutralizing a metal salt catalyst solution, then blending the metal salt catalyst solution with a vapor deposition silicon-carbon material, placing a catalyst on the surface and inside the silicon-carbon material, and growing carbon nanotubes in situ under proper conditions to obtain the vapor deposition silicon-carbon composite negative electrode material interconnected with the in-situ grown carbon nanotubes. The prepared vapor deposition silicon-carbon negative electrode material of the in-situ growth interconnection carbon nano tube has the advantages of high conductivity, good mechanical property, high initial coulombic efficiency, long cycle life and the like, the preparation process route is clear, industrial production is easy, and the vapor deposition silicon-carbon negative electrode material has important significance and value for developing a novel negative electrode material of a high-performance lithium ion battery.

The present invention provides an underwater pre-tightening device for a rubber-plastic watertight electrical connector, comprising a guide sleeve, a compression spring, and a pressure plate. The guide sleeve comprises an upper guide sleeve and a lower guide sleeve. The upper guide sleeve includes a connector accommodating chamber, a first step, and a compression spring accommodating chamber in sequence, and the lower guide sleeve includes a compression spring accommodating chamber and a second step in sequence. The two ends of the compression spring are respectively located in the compression spring accommodating chambers of the upper and lower guide sleeves, and the outer diameter of the upper guide sleeve is smaller than the inner diameter of the compression spring accommodating chamber of the lower guide sleeve. The rear cable of the connector socket passes through the upper guide sleeve, the compression spring, the lower guide sleeve, and the pressure plate in sequence. The pressure plate is fixed on the underwater platform, and the upper guide sleeve, the compression spring, and the lower guide sleeve are fixed to the socket, and the compression spring is in an uncompressed state. The device realizes the reliable connection and separation of the rubber-plastic watertight electrical connector in a complex underwater environment, and meets a certain range of axial and radial displacements. It has a simple structure and strong versatility, and can improve the safety and reliability of underwater equipment plug-in and plug-out separation.

The invention relates to the technical field of lithium batteries, in particular to a battery assembly and a single battery. The battery assembly comprises a pole group, a pole lug and a cover plate; the cover plate comprises a cover plate pole; the cover plate pole comprises a pole base arranged towards the pole group, and the pole base is attached to the pole group; the tab is led out from the pole group and is welded with the surface, far away from the pole group, of the pole base, a welding mark is formed on the tab, and an area formed by the welding mark is defined as a welding area; when F is greater than or equal to 180N and less than or equal to 300N, t is greater than or equal to 800 microns and less than or equal to 1200 microns, and S is greater than or equal to 90 mm < 2 > and less than or equal to 150 mm < 2 >; wherein S is the area of the welding area, F is the thrust when the battery assembly is subjected to thermal runaway, and t is the welding penetration of the welding area. According to the battery assembly and the single battery provided by the invention, the problem that when thermal runaway occurs in an existing battery cell structure, the pole group randomly moves along with high-temperature and high-pressure airflow to shield the anti-explosion valve and further shield the exhaust channel is solved.

The utility model relates to a generator motor rotor magnetic pole structure. The utility model is suitable for the technical field of generator motors. The technical problem to be solved by the application is to provide a generator motor rotor magnetic pole structure. According to the technical scheme, the generator motor rotor magnetic pole structure is characterized in that the generator motor rotor magnetic pole structure comprises a magnetic pole iron core, two sides of a pole body of the magnetic pole iron core are parallel, and a magnetic pole coil is arranged around the periphery of the magnetic pole iron core; the outer diameter supporting structure is arranged at the outer diameter end of the magnetic pole iron core in the radial direction, and the included angle between the outer diameter supporting structure and a pole body of the magnetic pole iron core is smaller than 90 degrees; and the inner diameter supporting structure is arranged at the inner diameter end of the magnetic pole iron core in the radial direction, and the inner diameter supporting structure is used for providing radial supporting for the magnetic pole coil.

The invention provides a diamond wire bus and a diamond wire, the diamond wire bus comprises a base body and a coating layer covering at least part of the surface of the base body, the coating layer comprises a first metal layer, and the first metal layer covers at least part of the surface of the base body; the second metal layer covers at least part of the surface, far away from the substrate, of the first metal layer; the third metal layer covers at least part of the surface, far away from the first metal layer, of the second metal layer; wherein the first metal layer comprises first metal, the second metal layer comprises second metal, and the third metal layer comprises third metal and fourth metal; the content of third metal in the third metal layer increases progressively in the direction away from the second metal layer; the fourth metal and the second metal are the same metal. The outer surface of the third metal layer can keep sufficient strength and cannot fall off while achieving a lubricating effect, and the inner surface of the third metal layer is combined with the second metal layer, so that the cutting process of hard and brittle materials can be continuously carried out, and the cutting yield is improved.

The utility model relates to the technical field of soil exploration, and discloses soil multilayer sampling equipment which comprises a connecting nut, a collecting structure for sampling is arranged at the end of the pushing screw and comprises a sampling barrel, a discharging window and a baffle, the sampling barrel is fixedly connected with the pushing screw, the discharging window for taking out samples is formed in the wall face of the sampling barrel, the baffle is located in the baffle, and the baffle is detachably connected with the sampling barrel. By arranging the detachable baffle, after the baffle and the sampling barrel are installed, the baffle shields the discharging window, the baffle and the sampling barrel jointly form a cylinder for sampling, soil screwed into a sampling barrel cavity is a sample, after the sampling barrel is screwed out of the soil, the sample is located in the sampling barrel cavity, the baffle and the sampling barrel can be detached, and the sampling barrel can be detached. The discharging window is in an open state, so that samples can be conveniently taken out, the completeness of the samples is ensured as far as possible, and the device has the characteristic of conveniently taking out the samples and is easy to operate actually.

The invention discloses a combined grounding wire device and a use method, and belongs to the technical field of power equipment grounding, the combined grounding wire device comprises a grip, and the grip is provided with an adjustable pressing and clamping assembly used for clamping a high-voltage wire; the adjustable pressing and clamping assembly comprises a pressing device, a locking device and a clamping device, the pressing device and the locking device are installed on the grip, and the locking device is connected with the clamping device; the connector assembly is provided with a locking assembly used for locking a grounding wire. The connector assembly is provided with a limiting assembly for preventing the high-voltage wire from falling off, and the limiting assembly is connected with the clamping device; a connector assembly used for clamping is installed on the grip, and the connector assembly is connected with the pressing device, the clamping device, the locking assembly and the limiting assembly. By means of the mode, when the device is adjusted to the proper clamping position, locking of the device is released, the device is automatically clamped, the locking device does not need to be rotated manually, operation of workers is reduced, and working efficiency is improved.

The utility model belongs to the field of lubricating grease production, and particularly relates to a lubricating grease production degassing device which comprises a supporting table. The degassing device comprises a supporting table which is designed in an n shape, a degassing box is fixedly connected to the top of the supporting table, a motor is arranged at the top of the degassing box, a fixing block is fixedly connected to the top of the motor, the fixing block is designed in an inverted L shape, the bottom of the fixing block is fixedly connected to the top of the degassing box, and a stirring rod is fixed to the output end of the motor. The stirring rod is arranged in the degassing box; an operation handle is rotated to drive a butterfly valve to rotate, the defoamed lubricating grease in the degassing box is discharged from the interior of the degassing box, the stirred lubricating grease can be turned up and down, a first limiting block abuts against a rotating plate to prevent liquid from flowing back, and an injection type rotating plate can rotate along a rotating shaft to inject the liquid into the degassing box. The problem that liquid which is not mixed is polluted due to backflow caused by a single inlet and outlet in the prior art is solved.

The invention discloses a temperature-adjusting antibacterial knitted fabric and a preparation method thereof, and belongs to the technical field of functional clothing, Ti3AlC2 powder is soaked in an HF solution, stirring reaction is performed, and Ti3C2Tx MXene is formed. And purifying and stripping by adopting methods such as centrifugal cleaning and ultrasonic treatment to obtain the high-quality MXene micron sheet. The MXene-PVA material is prepared by grafting polyvinyl alcohol with good affinity and centrifuging. An emulsion-solvent evaporation method is utilized to prepare the temperature-adjusting antibacterial microcapsule which takes polypyrrole as a shell material and lauric acid as a core material. The MXene-PVA material and the temperature-adjusting antibacterial microcapsules are compounded through mechanical stirring and electrostatic adsorption, the obtained temperature-adjusting antibacterial functional MXene material is mixed with a PVA adhesive, and the temperature-adjusting antibacterial finishing agent for knitted garments is prepared. The finishing agent is finished on knitted garments through an impregnation method, so that the knitted garments are endowed with excellent temperature adjusting and antibacterial properties.

The invention provides a submarine pipeline protection device and an installation method of the submarine pipeline protection device, the submarine pipeline protection device comprises a protection main body, the bottom surface of the protection main body is provided with a containing groove used for containing a submarine pipeline, and the height and the width of the containing groove are larger than or equal to the diameter of the submarine pipeline; the fixing pile is arranged on the face, provided with the containing groove, of the protection body. The fixing pile is used for being inserted into the seabed when the protection body covers the submarine pipeline located on the seabed through the containing groove. According to the submarine pipeline protection device, the containing groove is formed in the protection body, and the submarine pipeline is placed in the containing groove, so that the complex construction processes of ditching and pipeline laying on the seabed and stacking protection of multiple gravel layers are avoided, and the submarine pipeline protection efficiency is improved.

This utility model relates to the field of low-temperature resistant sheathing technology, and discloses a low-temperature resistant sheathing tube, including a tube body, a nitrogen layer, and an inner column. The tube body has a hollow cavity inside, and an insulating airbag is fixedly connected to the inner wall of the hollow cavity. The outer wall of the nitrogen layer is fixedly connected to the inner wall of the insulating airbag. An outer column is fixedly connected to the inner wall of the tube body, a sponge is fixedly connected to the inner wall of the outer column, and a dehumidifying layer is fixedly connected to the outer wall of the inner column. A passage component is provided on the inner wall of the insulating airbag, and a reinforcing component is provided on the outer wall of the tube body. In this utility model, a hollow cavity is formed in the tube body, and an insulating airbag is placed in the hollow cavity. Nitrogen gas is injected into the insulating airbag through an inflation port. The interior of the insulating airbag is filled with chambers and air channels. Both the outer and inner columns are equipped with sponges and supplemented with a dehumidifying layer. The entire structure achieves efficient heat preservation and drying effects inside the tube body, providing a stable temperature environment for internal pipelines and cables.

The utility model discloses an oil seal protective sleeve with an oil delivery function, which comprises a protective sleeve body, the protective sleeve body is abutted against an oil seal of a shell, and the shell is sequentially provided with a differential half shaft hole, an oil seal main lip and an oil seal side lip along the axial outward direction of the oil seal. An abutting part, a leakage-proof part and a dust-proof part are sequentially arranged on the protective sleeve body in the outward direction in the axial direction of the oil seal, and the abutting part is in interference fit with a differential mechanism half shaft hole so as to resist the impact force of oil liquid on the protective sleeve body in the transportation process; the leakage-proof part is in interference fit with the oil seal main lip; and the dustproof part, the shell and the oil seal side lip are encircled to form a closed cavity structure. Through the interference fit between the matching rib of the abutting part and the differential half axle hole, the interference fit between the leakage-proof part and the oil seal main lip, and the enclosure of the dustproof part, the shell and the oil seal side lip to form a closed cavity structure, the protective sleeve does not fall off in the transportation process, oil leakage is effectively prevented, and the requirement for the oil delivery function is met.

The utility model discloses a belt material cleaning device, belongs to the technical field of conveying belt material scraping, and solves the problem that the magnetic separation effect of a magnetic roller is affected due to the fact that mud adheres to a belt in the prior art. The material cleaning device comprises a belt frame, belt rollers are rotationally arranged at the two ends of the belt frame, the belt rollers are sleeved with a belt used for conveying ball-milled materials, the belt frame is installed on the ground through a supporting column, a scraper movable pin seat is arranged on one side of the supporting column, a connecting rod is rotationally arranged on the scraper movable pin seat, and the connecting rod is connected with the belt frame. A connecting rod is arranged on the supporting column, a scraper used for scraping mud is arranged on the top of the connecting rod, the scraper is tightly attached to the belt, a tightening device is arranged between the connecting rod and the supporting column, and a cleaning device used for cleaning residual mud is arranged on one side of the supporting column. According to the belt material cleaning device, ball milling materials are not left on the belt, so that the iron separation effect is improved, the environmental pollution is reduced, and the labor intensity of manual cleaning is reduced.

The utility model provides a tool for a robot to measure a TCP point, which relates to the field of the robot to measure the TCP point, and adopts the scheme that the tool comprises a bottom plate and a measuring rod, the measuring rod is vertically arranged on the bottom plate, the measuring rod is detachably connected with the bottom plate, the upper part of the measuring rod is provided with a measuring piece, and the measuring piece is detachably connected with the bottom plate. The measuring piece is of a conical structure, a protective cap is detachably arranged on the upper portion of the measuring rod, and the protective cap can cover the measuring piece. According to the utility model, the external reference point can be prevented from moving during TCP measurement of the robot, so that the accuracy of TCP point measurement is ensured.

The present application belongs to the field of valve technology, and specifically relates to a connection structure between a wedge-type double gate with a butterfly spring and a valve stem. A connection structure between a wedge-type double gate with a butterfly spring and a valve stem comprises a gate 1# and a gate 2#, and a butterfly spring is respectively arranged on the A surface of the gate 1# and the B surface of the gate 2#. After the butterfly spring is compressed at the bottom of the valve stem, it contacts with the gate 1# and the gate 2#, thereby transmitting the load to the gate 1# and the gate 2#. The significant effect of the present application is that since a butterfly spring is arranged between the valve stem and the gate, the height difference between the upper A surface of the gate 1# and the upper B surface of the gate 2# caused by the processing error is automatically compensated by the butterfly spring, so that the valve stem load is evenly transmitted to the gate 1# and the gate 2#, thereby improving the sealing performance of the valve. Since the gap X between the valve stem T-head and the gate T-slot is less than the depth Y of the circular groove, the butterfly spring will never fall off the circular groove.

The utility model discloses a handle and a door convenient for fast disassembly and assembly, the handle convenient for fast disassembly and assembly comprises a handle body, one end of the handle body is connected with a panel, the panel is connected with the handle body through an adapter sleeve, the panel is connected with a base in a clamping manner, an elastic ring is arranged between the base and the panel, and the elastic ring is connected with the handle body through an adapter sleeve. The base is sequentially provided with a clamping spring, a positioning meson and a reset bias spring. The handle further comprises a transmission square rod, the end of the transmission square rod sequentially penetrates through the clamping spring, the positioning meson, the reset bias spring, the square rod rotating head, the base and the panel and is connected to the handle body in a penetrating mode, a reset trigger piece is arranged on the side wall of the square rod rotating head, the reset bias spring is connected with the reset trigger piece, and the reset bias spring is connected with the reset trigger piece. And a limiting protrusion is arranged on the side wall of the transmission square rod and used for enabling the transmission square rod to be connected to a door leaf in a clamped mode to prevent the transmission square rod from falling off when the handle body is detached.

The utility model relates to the technical field of wrapping film packaging, and particularly discloses a wrapping film pressing and cutting device which comprises an adjusting seat, the adjusting seat is fixedly installed at the bottom of wrapping equipment, an installation bottom plate is fixedly installed on the adjusting seat, a telescopic plate with a sliding block is installed on the installation bottom plate in a sliding mode, and a first round air cylinder is fixedly installed on the installation bottom plate. Before the cutter cuts the winding film, the winding film abuts against the clamping arm connecting rod, then the clamping plates press the winding film on the clamping arm connecting rod through rotation of the rotating plate, then the cutter presses and cuts the winding film, the winding film is cut through the cutter, and the winding film is cut through the cutter. And the abutted position of the wrapping film is located near the cutting point, so that the wrapping film is tensioned and fixed at a proper position before pressing and cutting, and when pressing and cutting actions occur, enough stress points can be ensured, so that enough cutting force is provided, and thorough separation of the head and the tail of the wrapping film is realized.

The utility model relates to the technical field of quick disassembly and assembly of structural parts, and discloses a quick disassembly and assembly structure and an ultrasonic equipment trolley. The quick dismounting and mounting structure comprises a first mounting piece, a second mounting piece and a connecting piece, wherein the first mounting piece is provided with a first clamping part and a second clamping part; the second mounting piece is provided with a third clamping part and a limiting piece with a fourth clamping part, the third clamping part corresponds to the first clamping part, the fourth clamping part corresponds to the second clamping part, and the limiting piece is suitable for being driven by external force to drive the fourth clamping part to move close to or away from the third clamping part. According to the utility model, the limiting piece which is suitable for being driven by external force to freely move is arranged, so that the clamping space formed between the third clamping part and the fourth clamping part is changed, and the first clamping part and the second clamping part which are positioned between the clamping spaces are respectively clamped with or separated from the third clamping part and the fourth clamping part; the first mounting part and the second mounting part are assembled or disassembled, external tools are not needed during disassembly and assembly operation, convenience and rapidness are achieved, and operation is easy.

The utility model belongs to the technical field of spin coating, and discloses a storage mechanism, a feeding and discharging device and spin coating equipment. The storage mechanism comprises at least two extension plates and a bearing assembly, and the at least two extension plates are arranged at intervals in the first direction; the bearing assembly is used for bearing the substrate and comprises two bearing plates, the two bearing plates are arranged on the opposite wall faces of the two adjacent extension plates respectively, a first avoiding gap is formed between the two bearing plates, and a clamping piece used for clamping the substrate can pass through the first avoiding gap to take out the substrate. The storage mechanism is simple in structure and capable of storing the substrates, the clamping pieces can be smoothly moved out of the storage mechanism after grabbing the substrates due to the arrangement of the first avoiding gaps, feeding and discharging of the substrates are quite convenient, the feeding and discharging efficiency is high, automatic feeding and discharging can be achieved, the labor cost is reduced, and the working intensity is reduced.

This utility model relates to the field of plastic product processing technology and discloses a flipping mechanism for processing plastic products. It includes a flipping frame, with second hydraulic rods installed on both sides of the inner wall of the flipping frame. The second hydraulic rods are fixedly connected to a movable plate. The mechanism also includes a first clamping plate and a second clamping plate. Mounting seats are installed at both ends of the first clamping plate, and a rotating shaft is rotatably mounted on the mounting seats, with the rotating shaft fixedly connected to the second clamping plate. This utility model places a plastic sheet inside the flipping frame and drives the movable plate to move via the second hydraulic rods. This causes the first clamping plate to abut against both sides of the plastic sheet. As the movable plate continues to move, the elastic mechanism undergoes elastic deformation, and under the action of the support rod, the second clamping plate rotates around the rotating shaft, causing it to abut against both sides of the plastic sheet. The cooperation of the first and second clamping plates clamps and fixes the plastic sheet, preventing it from falling off during the flipping process due to insufficient clamping force.

The utility model relates to the technical field of medical instruments, and discloses a disposable arteriovenous blood taking needle which comprises a medical three-way plug valve, the left end of the medical three-way plug valve is fixedly communicated with a first connecting pipe, and the upper end and the lower end of the medical three-way plug valve are fixedly communicated with second connecting pipes. A first hose is attached to the inner wall of the first connecting tube, a second hose is attached to the inner wall of the second connecting tube, a blood sampling needle is adhered to the inner wall of the first hose, and a test tube needle is adhered to the inner wall of the second hose. Through the medical three-way plug valve, the first connecting tube, the second connecting tube, the first hose, the second hose, the blood sampling needle head and the test tube needle head, after the blood sampling needle head penetrates into the artery of a patient, the blood sampling needle head can be used for sampling the artery of the patient through the matching of the medical three-way plug valve, the first connecting tube, the second connecting tube, the first hose, the second hose and the test tube needle head; medical staff can directly collect two blood samples, so that the puncture frequency of the blood taking needle is effectively reduced.

This invention discloses an air conditioner, an air conditioner control method, a controller, and a storage medium. The air conditioner control method includes acquiring piezoelectric parameters collected by a piezoelectric sensor; and determining the current position of the compressor rotor based on a preset heat-shrink angle, the magnitude of the piezoelectric parameters, and their variation patterns. The piezoelectric sensor is positioned between the housing and the spring, preventing it from detaching even when the compressor is running at high speed. Furthermore, by observing the linear motion of the slider reflected by the piezoelectric parameters, the eccentric rotation of the piston is obtained, leading to the eccentric angle of the rotor, ultimately determining the rotor's current position. This invention achieves precise compressor control by acquiring piezoelectric parameters from a piezoelectric sensor, preventing control misalignment in the air conditioner and improving the user experience.

The utility model discloses a storage goods stacking height intelligent monitoring device which comprises a goods shelf, a plurality of goods storage box bodies are stacked in the front end of the goods shelf, a connecting base is connected to the center of the upper end of the goods shelf through bolts, a monitoring assembly is arranged on the front side of the upper end of the connecting base, and the monitoring assembly comprises a distance measuring radar and a monitoring host. The lower side of the front end of the connecting base is connected with a radar rotating base, the front end of the radar rotating base is rotationally connected with a ranging radar through a limiting rotating shaft, the center of the upper end of the ranging radar is connected with an angle adjusting frame, and two angle adjusting rotating wheels are arranged on the rear side of the angle adjusting frame and located at the two corners of the front side of the upper end of the connecting base correspondingly. According to the utility model, the ranging radar is combined with the angle adjusting mechanism (the angle adjusting rotating wheel, the angle adjusting belt, the pushing sleeve and the like) to realize the swing scanning of the radar, so that the radar can dynamically adjust the detection angle, accurately measure goods at different stacking heights, and improve the flexibility and accuracy of monitoring.

The present invention discloses an isolated type washing machine inner drum locking device, comprising an open inner drum door, a fixed inner drum door, a supporting mechanism and a locking mechanism. The unlocking unit rotates to drive the lock seat to rotate, so that the arc-shaped limit rod pulls the telescopic rod to contract, so that the locking groove member is separated from the triangular clamping plate and the door locking clamping seat at the upper end of the open inner drum door, so that the open inner drum door is opened, and the inner drum door can be effectively self-locked and closed, so that the inner drum door will not shake. The triangular clamping plate is clamped in the locking key groove. When the inner drum door rotates at a high speed during operation, the greater the centrifugal force generated by the rotation of the inner drum door, the more the locking key groove of the locking groove member is clamped with the triangular clamping plate. The locking key groove of the locking groove member can play a role of fixing and further locking the inner drum door when the inner drum door is locked and rotates, so that the two inner drum doors are extremely fixed. When in use, the two inner drum doors will not fall off when the inner drum rotates at a high speed, thereby ensuring the overall use.

The invention discloses a lithium manganate positive electrode material, a preparation method and an applied lead-lithium battery, relates to the technical field of lithium manganate positive electrode materials, and solves the problems that the existing lithium manganate positive electrode material is poor in structure and interface stability and poor in rate and cycle performance. The positive electrode material is composed of a lithium manganate matrix and a double-layer composite coating, the matrix is prepared by taking lithium carbonate and manganous-manganic oxide as raw materials and doping magnesium hydroxide, aluminum hydroxide and titanium dioxide multi-plasma phase; the lithium manganate positive electrode material is prepared by uniformly compounding a lithium manganate matrix modified by a spinel inner layer, vinyl functionalized MOF and a polyvinylidene fluoride-hexafluoropropylene copolymer on the surface of an aluminum foil receiver through an electrospinning-electrospray synergistic process. The material is applied to the lead-lithium battery, shows excellent electrochemical performance and has good practical application value.

The invention relates to the technical field of mechanical water meters, and discloses an automatic meter reading device for a mechanical water meter and a meter reading method thereof, comprising a connection cover, a fastening ring, and a meter reading device connected to the mechanical water meter through the connection cover and the fastening ring, the meter reading device comprising a housing, a micro camera, a fill light LED lamp, a water immersion sensor, a control circuit board, and a power module for power supply; a wide circular ring protrudes outward from the upper end of the connection cover, the inner diameter of the fastening ring is slightly larger than the outer diameter of the lower end of the connection cover and smaller than the outer diameter of the wide circular ring at the upper end of the connection cover, an internal thread is arranged on the inner wall of the fastening ring, a stepped external thread joint is arranged at the lower end of the housing, the internal thread of the fastening ring matches the thread of the stepped external thread joint at the lower end of the housing, and the connection cover is provided with an internal thread, which matches the external thread on the mechanical water meter. Compared with the prior art, the invention has strong adaptability, only replaces the copper cover on the original mechanical water meter, and has the characteristics of state monitoring, quick installation, and convenient maintenance, and meets the requirements of manual and automatic meter reading at the same time.

The invention relates to the technical field of building structure construction, and particularly discloses a construction method of a counterweight-free suspension type hanging basket, which comprises the following steps of: forming a vertical hole in a floor slab of a building; a suspension mechanism is placed on the floor, and the suspension mechanism is located over the vertical hole; a steel wire rope is mounted on the suspension mechanism; an overhanging platform is placed below the floor slab; the end, away from the suspension mechanism, of the steel wire rope penetrates through the vertical hole and then is connected with an elevator of the cantilever platform; and after the cantilever platform is used, the steel wire ropes are disconnected from the hoister, and the vertical holes are filled with concrete after the steel wire ropes are pulled out of the vertical holes. The cantilever platform has the effect that construction of the cantilever platform is more convenient.

This utility model discloses a motor controller, relating to the field of motor control technology. It includes a housing and a base plate. Four sets of blind holes are formed at the front and rear edges of the bottom of the housing. Each set of blind holes contains a locking post fixed to the upper surface of the base plate. Two sets of limiting grooves are formed between adjacent sets of blind holes along the length of the base plate. Two sets of locking strips slide within each set of limiting grooves. A locking slot is formed at the contact point between the locking post and the locking strip. Springs are fixed to the ends of the two sets of locking strips. This utility model, through the cooperation of the locking posts and locking strips, makes disassembling the housing and base plate quick and easy, facilitating manual disassembly of the controller for later maintenance. Simultaneously, the locking components protect the wiring harness connecting the controller to the external circuitry, ensuring it can withstand certain external forces without falling off. This allows the motor controller to continuously monitor and adjust the motor.

The utility model relates to a self-adaptive casing centralizer. According to the technical scheme, the centralizer comprises an inner pipe, elastic centralizing pieces, rigid centralizing strips and springs, clamping plates are evenly distributed on the outer sides of the upper end and the lower end of the inner pipe, channels are formed by the clamping plates and the outer side of the inner pipe, the elastic centralizing pieces are made of elastic materials, and each elastic centralizing piece comprises a middle arching part and straight edge parts at the two ends. The straight edge portions at the two ends of the elastic centralizing piece are inserted into the channel, the rigid centralizing strip is arranged on the outer side of the middle of the inner pipe, the elastic centralizing piece and the rigid centralizing strip are correspondingly arranged, and a spring is arranged between the elastic centralizing piece and the rigid centralizing strip. The casing centralizer has the advantages that the casing centralizer is installed at the design position of a casing string, the centralizer is expanded under the action of spring force according to the condition of a borehole outside a casing, and the casing centralizer is self-adaptive to the actual condition of the borehole outside the casing; by changing the specification and the length size of the spring, different borehole conditions can be adapted.

The invention provides a testing device for circuit break protection performance of a direct current filter, and relates to the field of direct current filters. Comprising a box body and a box cover, an installation bottom frame is arranged on the inner side of the box body, a direct current filter is arranged in the middle of the upper end of the installation bottom frame, a digital bridge tester is arranged on the inner side of the box cover, connecting rods are arranged on the upper portions of the left end and the right end of the inner side of the installation bottom frame, and a plurality of wiring units are arranged on the outer sides of the connecting rods at equal intervals in a sliding mode. And each wiring unit comprises a second wire joint. The connector lugs arranged at the two ends of the connecting cable are electrically connected with the first wire connector and the second wire connector, and the second wire connector is in wire connection with the direct current filter through the metal patch panel, so that the digital bridge tester is in circuit communication with the direct current filter, the convenience in the circuit communication process is improved, and the reliability of the digital bridge tester is improved. And meanwhile, the box body and the box cover are arranged, so that the portable performance in the using process is improved.