54results about How to "Guaranteed stability and reliability" patented technology

The invention discloses a tool wear loss prediction method based on physical information self-supervised learning under the condition of few marks, and belongs to the technical field of numerical control machining center tool wear state prediction. Comprising the steps of collecting monitoring signals such as cutting force, vibration and acoustic emission in the machining process; carrying out preprocessing operation of interception and Z score standardization on each sample; a mixed residual convolutional neural network tool wear monitoring model is designed, and information fusion and high-dimensional representation extraction are carried out on multi-source sensor signals; pre-training the tool wear monitoring model by using the auxiliary task I, and guiding the model to extract the invariance feature of the signal; according to the method, under the condition of scarce marked data, high-precision prediction and excellent generalization ability of tool wear are realized, the fluctuation amplitude of prediction errors can be effectively reduced, and the stability of a prediction result is kept. According to the method, a small amount of mark data is effectively utilized in model training, the stability and reliability of tool wear monitoring are ensured, and the requirements for monitoring precision and adaptability in actual production are met.

The invention relates to the technical field of optical engines, and discloses an optical engine packaging structure with a detachable optical fiber array, the optical engine packaging structure comprises a substrate, an electric chip, a silicon optical chip, a fixed seat and the optical fiber array, the electric chip, the silicon optical chip and the fixed seat are all mounted on one side of the substrate, and the electric chip and the silicon optical chip are electrically connected with the substrate; a groove is formed in the side face of the fixing base, an adapter block is installed at the end of the optical fiber array, the adapter block is detachably installed in the groove in the direction perpendicular to the side face of the substrate, the adapter block comprises a limiting section and an overhanging section which are fixedly connected, and the limiting section is in concave-convex fit with the groove; the overhanging section protrudes towards one side close to the silicon optical chip, the overhanging section and the silicon optical chip are opposite up and down, a lens structure is further installed between the end face, corresponding to the silicon optical chip, of the overhanging section and the silicon optical chip, and the lens structure is in light conduction connection with the optical fiber array and the silicon optical chip; the fixing base is detachably provided with a clamping piece, and the clamping piece and the switching block are in fastening fit in the direction perpendicular to the side face of the base plate.

The utility model discloses a multifunctional direct-current fan control panel connected through a bus. The multifunctional direct-current fan control panel comprises an MCU control unit, a PWM output circuit, a temperature acquisition circuit, a bus communication circuit and a motor feedback circuit. Wherein one side of the MCU control unit is connected and communicated with the charging pile control system processor through the bus communication circuit; the other side of the MCU control unit is electrically connected with the direct current fan through a PWM output circuit, a temperature acquisition circuit and a motor feedback circuit. The MCU control unit is used for reporting the working temperature and the operation state information to the charging pile control system processor, receiving control information issued by the charging pile control system processor according to the working temperature and the operation state information, and stopping outputting PWM pulse signals to the direct current fan when the direct current fan breaks down. The technical scheme provided by the utility model not only facilitates wiring and installation of the charging pile, but also reduces noise and saves energy, and ensures the stability and reliability of a charging pile control system.

A multi-magnetic field induction heating device relates to the technical field of induction heating devices and comprises an induction heating power supply, a load matching slot circuit and an induction coil. The induction heating power supply comprises a three-phase rectifier bridge, a direct-current chopper circuit and a multi-cascade full-bridge inverter circuit; the three-phase rectifier bridge converts alternating current commercial power into direct current, and the direct current chopper circuit changes direct current output voltage rectified by the three-phase rectifier bridge and then inputs the direct current output voltage into the multi-cascade full-bridge inverter circuit; the multi-cascade full-bridge inverter circuit comprises 2n solid-state switches VT1-VT2n which form m bridge arms and provide output current for the (n-1) induction coils at the same time, and n, m # imgabs0 # 2; the induction heating power supply and the induction coil are subjected to optimal impedance matching by adjusting a load matching slot circuit; according to the utility model, simultaneous output of the plurality of induction coils is realized to heat a workpiece, power instability caused by coupling among the plurality of coils is effectively reduced, and stable control of the heating temperature of the workpiece is realized.

The invention provides a null-loop-free zoom lens and method based on flexible cable transmission, and relates to the technical field of optical precision instruments.The zoom lens comprises a zoom set flexible cable driving mechanism and an optical lens set, the zoom lens set and a compensation lens set jointly achieve the purpose of zooming, the focusing lens set plays a role in focusing compensation under temperature and air pressure changes, and the compensation lens set plays a role in focusing compensation under temperature and air pressure changes. The first flexible cable is adopted for transmission, the return stroke difference of the first driving device in the forward and reverse rotation process can be eliminated, the zooming precision is improved, the first elastic element and the second elastic element also provide a certain pre-tightening force, the return stroke difference generated by a fit clearance is eliminated, the stability and reliability of the lens under the extreme working condition are also ensured, and the service life of the lens is prolonged. The lens is compact in structure and small in occupied space, structural reconstruction and modular design are facilitated, and the problems that an existing zoom lens is poor in return stroke, the focusing precision is affected, and zoom clamping stagnation is caused are solved.

The utility model discloses a center rotation type oil storage tank sludge cleaning reduction treatment device and a control system thereof. The center seat is arranged at the geometric center of the bottom of the oil storage tank; the rotating seat is rotationally mounted on the central seat through a rotating mechanism; the swing arm is hinged to the rotating seat through a deflection mechanism; the sludge suction filter head and the hydraulic jet head are arranged on the swing arm and pass through an area range between the central seat and the oil storage tank through deflection of the swing arm and rotation of the rotary seat; one ends of the pumping and draining header pipe and the spraying header pipe are positioned outside the oil storage tank, and the other ends of the pumping and draining header pipe and the spraying header pipe extend to the central seat and are respectively communicated with the sludge pumping filter head and the hydraulic spraying head through a sludge pumping pipe and a hydraulic spraying pipe. Compared with the prior art, the utility model has the beneficial effects that the built-in flushing and suction mode is adopted, so that sediments at the bottom can be effectively removed, and the full coverage of the bottom in the tank can be effectively ensured.

The invention relates to the technical field of batteries, and particularly provides a battery lithium precipitation detection method and device, and the method comprises the following steps: obtaining a differential curve of strain data of a target battery as a first change curve; acquiring a differential curve of the strain data of the reference battery as a second change curve; and comparing maximum peak intensity values of the first change curve and the second change curve, and judging whether lithium precipitation occurs in the target battery or not. According to the battery lithium precipitation detection method provided by the invention, the battery cell does not need to be disassembled, the safety is improved, meanwhile, whether lithium precipitation exists in the battery or not can be quickly and accurately judged, and the problems that a nondestructive detection method in the prior art is relatively poor in evaluation precision and low in accuracy are solved.

The invention discloses a server structure. The server structure comprises a mainboard; the radiator is arranged on the mainboard, and a mounting area is arranged on the radiator; the cable management buckle is arranged in the mounting area in a sliding mode, and a cable management space used for wiring of main board cables is arranged in the cable management buckle; the wire arrangement buckle can slide to be connected to the installation area or can slide to be disconnected from the installation area. According to the server structure, the installation area on the radiator is used for providing the installation area of the wire arrangement buckle, and the wire arrangement buckle is slidably arranged in the installation area, so that the wire arrangement buckle can slide off from the installation area when a cable or a mainboard device is maintained, and maintenance and inspection of operation and maintenance personnel are facilitated.

The invention relates to a method for improving temperature measurement performance of an aero-engine, and the method comprises the following steps: carrying out the response characteristic analysis of a temperature sensor, and obtaining a response error of the temperature sensor in a response process; performing temperature measurement deviation analysis on the temperature sensor to obtain the temperature measurement deviation of the temperature sensor; performing structure optimization on the temperature sensor by taking the time constant, the response error, the temperature measurement deviation and the reliability of the sensor as performance indexes to obtain the temperature sensor with the optimal structure; and establishing a dynamic parameterization compensation model based on the response error and the temperature measurement deviation of the temperature sensor with the optimal structure, and completing the self-adaptive compensation of the measurement error through the dynamic parameterization compensation model. The overall temperature measurement performance of the aero-engine can be improved.

The utility model relates to the technical field of liquid cooling sources, in particular to a liquid cooling source unit with double cold supply modes, which comprises a pumping component, a liquid supply pump component, a liquid supply pump component, a liquid supply pump component, a liquid supply pump component, a liquid supply pump component, a liquid supply pump component and a liquid supply pump component, the heat exchange module comprises a heat exchange tube plate and a heat exchange fan, the heat exchange tube plate internally comprises a cooling medium tube group and a refrigerant tube group, the refrigerant tube group is communicated with a plate heat exchanger on the heat exchange tube plate, and the plate heat exchanger and the cooling medium tube group are both communicated with a liquid feeding pipeline and a load end; and the liquid feeding pipeline is communicated and matched with the liquid feeding pump assembly and conveys the cooling medium, and the liquid feeding pipeline is selectively communicated to the cooling medium pipe group or the plate heat exchanger. Air cooling heat exchange is carried out through the cooling medium pipe set, liquid cooling heat exchange is carried out through the refrigerant pipe set, flexible switching can be carried out to meet the heat exchange cooling requirement of the terminal, meanwhile, the stability and reliability of the liquid cooling source unit are guaranteed, and pipeline damage and leakage caused by long-time continuous work are avoided.

The present invention discloses an operating system protection method based on the combination of soft and hard read-only. The method realizes soft read-only control from the system level and realizes bottom-level data read-only control at the hardware level. It is compatible with GPT and MBR partitioning forms, improves system access performance, and also ensures the stability and reliability of the operating system, and also ensures the security of the operating system. At the same time, this method can greatly reduce the number of read and write times of SSD solid-state storage disks, improve the read and write performance and life of SSDs, and the invention has good application prospects in key areas such as data security.

The present invention relates to the technical field of laser marking machines, and specifically discloses a flat-field scanning mirror for laser marking machines that can quickly dissipate heat, including a galvanometer and a field lens, the field lens is installed at the bottom of the galvanometer, a lens is installed inside the field lens, a mounting mechanism is symmetrically provided on the outer wall of the galvanometer, a receiving plate is provided below the galvanometer, a heat dissipation mechanism is provided on the receiving plate, the heat dissipation mechanism includes a through groove opened on the receiving plate, a rotating plate is rotatably installed in the through groove, a plurality of heat dissipation fans are installed at the bottom of the rotating plate, and the air outlets of the plurality of heat dissipation fans are all inclined upward, and a clamping mechanism is provided at the bottom of the receiving plate. In the invention, the high temperature of the lens during operation is guided out through the heat dissipation mechanism and dissipated through the heat dissipation fins, and the heat dissipation fan can also blow air to the field lens and the heat dissipation fins continuously when the field lens is working, so as to accelerate the heat dissipation of the field lens, thereby preventing the lens of the field lens from being in a high temperature state during operation and extending the service life of the field lens.

The lamp structure comprises an aluminum frame, a base plate fixed to the top face of the aluminum frame through screws, a light source plate arranged on the bottom face of the base plate and the lampshade arranged on the lower portion of the aluminum frame, an n-shaped protrusion is integrally formed in the middle of the inner wall of the aluminum frame, and a supporting convex edge is integrally formed at the bottom of the inner wall of the aluminum frame. A plurality of elastic pressing pieces are arranged on the inner wall of the aluminum frame, and the upper portions of the elastic pressing pieces are inserted and clamped in the concave areas of the n-shaped protrusions to be limited. The edge of the lampshade is attached to the top face of the supporting convex edge, and the elastic pressing piece abuts against the edge of the top face of the lampshade to be positioned. The aluminum frame is reasonable in structural arrangement, the n-shaped protrusion is integrally formed in the middle of the inner wall of the aluminum frame, and the supporting protruding edge is integrally formed at the bottom of the inner wall of the aluminum frame. A plurality of elastic pressing pieces are arranged on the inner wall of the aluminum frame, during assembly, the edge of the lampshade is clamped, pressed and positioned through the supporting convex edges and the elastic pressing pieces, the lampshade can be prevented from loosening or falling, disassembly and assembly are convenient and fast, and using stability and reliability are improved.

The invention relates to the technical field of intelligent monitoring of new energy power stations, and discloses a new energy power station multistage safety early warning method based on abnormal mode recognition, which realizes time consistency of multi-source data through unified time service and synchronous calibration, and solves the problem of inaccurate data coupling characterization in the prior art. By combining multi-dimensional feature construction and a self-evolution abnormal mode dictionary, the adaptability and accuracy of abnormal recognition are improved, and false report and missing report of a static model are avoided; based on a causal topology model and time decay reasoning, abnormal propagation path prediction and risk traceability are realized, and the defect of lack of causal traceability in the prior art is made up. Accurate and efficient global risk prevention and control are realized through global comprehensive risk level calculation and hierarchical response; and a closed-loop updating and shadow model verification mechanism guarantees continuous optimization, stability and reliability of the scheme, and the intelligent level and the operation guarantee capability of safety early warning of the new energy power station are comprehensively improved.

The utility model relates to the technical field of belt conveyor, concretely relates to an adjustable carrier roller of belt conveyor, including liftable support column assembly, the bottom of support column assembly is connected with adjustable steel sheet and cooperates with adjustable steel sheet in the transverse direction perpendicular to the conveying direction and slips, the upper end of support column assembly connects roller group, and the both ends of roller group are provided with adjustable support and cooperate with support column assembly through adjustable support, and a plurality of connecting positions for cooperating with support column assembly are arranged on adjustable support. The utility model adjusts the position of support column assembly on the transverse direction, realizes the displacement of roller group transverse, thereby adjusts the horizontal camber of the conveyer belt, and the height of roller group can be adjusted through the lifting adjustment of support column assembly, and the adjustment of the vertical plane camber of roller group can be realized through the cooperation of support column assembly and adjustable support. The utility model can adjust the conveyer belt from multiple dimensions, keeps the stable reliability of conveyer belt operation, and guarantees the convenient and efficient and stable reliability of conveying operation.

The present invention provides a self-locking knotless loop of a rope and a loop forming method thereof, which solves the technical problem that it is time-consuming and labor-intensive to weave knotless loops for existing fishing nets; the present invention comprises the following steps: step 1: take the end of one end of the rope body to be looped, take a point on the rope body to divide it into two halves, and form a first small hole; the first small hole divides the rope body into two parts, namely, a first rope segment including the end and a second rope segment; step 2: bend the first rope segment, insert the end into the first small hole, until the first rope segment passes through the first small hole, and tighten the first rope segment in a direction away from the second rope segment, flatten the first small hole, and form a first eye ring; step 3: take a point on the second rope segment and divide it into two halves, and form a second small hole; the second small hole divides the second rope segment into two parts, namely, a third rope segment and a fourth rope segment located between the first eye ring and the second small hole. The present invention is widely used in the field of rope loop manufacturing technology.

The invention relates to the technical field of monitoring equipment, and discloses monitoring equipment capable of reducing external interference, which comprises a mounting bracket and a camera, the camera is rotatably connected to the middle part of the mounting bracket, and a light sensor is mounted at the top of the camera. The top of the camera is provided with a low-temperature protection trigger assembly used for protecting the light sensor in a low-temperature environment, the rear side of the camera is provided with a broadcasting loudspeaker, and the rear side of the camera is provided with a noise absorption quality adjusting assembly used for processing noise when the broadcasting loudspeaker broadcasts and regularly replacing a sound absorption material; according to the technical scheme of the invention, the influence of excessive load on the operation of the camera in the monitoring and adjusting process is avoided while the surrounding temperature neutralization adjustment protection is carried out on the light sensor, and the adjustment processing is carried out aiming at the noise influence of the place environment, so that the clear tone quality can be ensured when the related transmission content is carried out, and the crowd can timely know the transmitted information prompt.

The utility model relates to the technical field of automobile connectors, in particular to an anti-seismic shielding automobile connector structure. According to the technical scheme, the connector comprises a first connecting piece and a second connecting piece, the connecting portion of the first connecting piece and the connecting portion of the second connecting piece are provided with a connecting end and a contact end respectively, and a first shielding layer and a second shielding layer are arranged between the connecting end and the contact end and used for shielding electromagnetism; a fastening connecting part used for assisting fastening connection of the first connecting piece and the second connecting piece is further arranged between the first connecting piece and the second connecting piece. The fastening connecting part comprises a connecting arm connected with the upper surface of the second connecting piece and a second hook clamping head connected with one side of the first connecting piece. According to the utility model, high-efficiency electromagnetic shielding is realized, shock resistance is realized by means of an elastic assembly and a hook clamping structure in the fastening connection part, and signal transmission stability and connection reliability are guaranteed in an omnibearing manner by means of cooperative fastening connection of multiple components in the fastening connection part.

The utility model relates to the technical field of circuit board detection and processing, in particular to a carrying mechanism for a switch PCBA (Printed Circuit Board Assembly) board, which comprises a moving module, a clamping jaw assembly and a clamping jaw assembly, the clamping jaw assembly is matched with the moving module and is used for opening and closing to clamp the PCBA board; the clamping jaw assembly comprises a main body and clamping blocks which are arranged on the main body and can be opened and closed relatively, limiting areas used for being connected with the main body in a matched mode are formed on the clamping blocks, and clamping grooves used for clamping the PCBA board are formed below the limiting areas. The PCBA board is clamped through the clamping jaw assembly, position adjustment is achieved through the displacement assembly, and therefore the PCBA board grabbing and carrying device is more stable and safer in the grabbing and carrying process, clamping matching precision reduction in the high-temperature environment is avoided, and carrying stability and reliability can be guaranteed.

This invention relates to the field of printer technology, and more specifically, to a printing apparatus and printing method. The printing apparatus includes a toner cartridge assembly, a fusing assembly, and a heat insulation assembly. The toner cartridge assembly and the fusing assembly are spaced apart; a portion of the paper guide channel passes through the fusing assembly; a portion of the paper guide channel is located on one side of the toner cartridge assembly. The heat insulation assembly includes a heat insulation unit and a heat dissipation unit; the heat insulation unit includes a heat insulation module and a heat conduction module; the heat insulation module is located between the fusing assembly and the toner cartridge assembly; the heat conduction module is located on the side of the heat insulation unit away from the paper guide channel; the heat conduction module is located on the side of the heat insulation unit away from the fusing assembly; the heat conduction module and the paper guide channel are thermally connected via a heat transfer section. The printing apparatus includes a heat dissipation state; the heat dissipation state includes: heat in the paper guide channel is transferred to the heat conduction module, and the heat dissipation unit dissipates the heat in the heat conduction module to the outside of the printing apparatus. This solves the problem of excessively high temperature in the toner cartridge assembly caused by heat transfer from the paper guide channel.

The utility model belongs to sensing equipment technical field relates to a pressure sensing device, including shell and cooperation setting on the shell upper cover, the shell and upper cover form the accommodation space between, be provided piezoelectric wafer in the accommodation space, piezoelectric wafer and shell fixedly bond between, and piezoelectric wafer and shell still have the lug between connection, the shell has the recess portion with piezoelectric wafer coaxial setting in, and the convex part correspondingly piezoelectric wafer circumferential setting, piezoelectric wafer fixedly bond on the convex part, the lug one side and piezoelectric wafer bond, the other side and the convex rib on the shell corresponding connection. The utility model can improve the voltage of knock feedback, and its feedback highest voltage is about 10V, has simple structure, and it is convenient to assemble, stable performance, effect is improved obviously and so on advantage.

The utility model discloses a mobile phone camera decoration ring stack spraying clamp which comprises a lower base, an upper cover plate, a lock rod and a plurality of interlayer middle plates, the lower base is provided with a base through hole, the upper cover plate is provided with a cover plate through hole, and each interlayer middle plate is provided with a middle plate through hole; the lock rod comprises an operation part, a rod part and a locking part which are sequentially connected from top to bottom, and the operation part is in a sheet shape. The upper surface of the upper cover plate is provided with a soft rubber convex block at the edge part of the opening at the upper end of the cover plate through hole, and the upper surface of the soft rubber convex block is provided with a rotation stopping convex point; when the mobile phone camera decoration ring stack spraying clamp is used, the rod portion of the lock rod sequentially penetrates through the cover plate through hole, the multiple middle plate through holes and the base through hole from top to bottom, the locking portion of the lock rod penetrates through the base through hole and extends to the position below the lower surface of the lower base, the locking portion abuts against the lower surface of the lower base, and the operation portion of the lock rod abuts against the upper surface of the soft rubber protruding block. By means of the structural design, the device has the advantages of being novel in structural design, stable in use and good in reliability.

The utility model discloses a motor home sewage discharge telescopic pipe which comprises a connecting body and a telescopic pipe body, and a buckle connecting structure is arranged at the end of the telescopic pipe body. A buckle positioning structure is arranged at the end part of the connecting body; and the buckle connecting structure of the telescopic pipe body is inserted into the buckle positioning structure, and the buckle is rotated for positioning. According to the utility model, the structural arrangement is reasonable, the buckle connecting structure of the telescopic pipe body is inserted into the buckle positioning structure, and the buckle is rotated for positioning, so that the convenience of structural connection and the stability and reliability of connection are improved through the structure; meanwhile, the buckle connecting structure comprises a plurality of locking pieces, a connecting pipe, a buckle connecting piece and a threaded clamping piece, the protruding ring is inserted into an inserting cavity of the buckle connecting piece, the locking pieces penetrate through locking position groove holes and are clamped into annular clamping grooves to be positioned, connection convenience and connection stability and reliability can be guaranteed, disassembly, assembly and maintenance operation are convenient, the locking pieces are used for locking positions, and therefore the connecting efficiency is improved. Loosening or falling is not prone to occurring, and the service life can be prolonged.

The present invention discloses a dual energy-gathering atomizing device, including a base of the atomizing device, a driving circuit control board is arranged in the cavity of the base, a liquid load cavity is installed on the upper part of the base of the atomizing device, an energy-gathering cover is arranged on the upper cover of the liquid load cavity so that it is submerged in the liquid load, and an atomizing sheet is arranged at the lower part of the liquid load cavity, which is opposite to the position of the energy-gathering cover, and the atomizing sheet is electrically connected to the driving circuit control board. A liquid load cavity is added to the atomizing sheet of the existing essential oil ultrasonic atomizing device, and the liquid load has the function of cooling and heat dissipation, which solves the disadvantage that ultrasonic atomization of oily liquid can only work intermittently, and ensures the stable and reliable operation of the atomizing sheet. At the same time, the energy-gathering cover is arranged to collect the ultrasonic energy emitted by the atomizing sheet to the atomizing plane, which greatly improves the ability of ultrasonic atomization and has a good atomization effect.

The invention discloses a wet garbage treatment system with a biomass heat energy recycling function. The wet garbage treatment system comprises a cabinet, and a crushing part, a storage bin, a conveying part, a drying part, a cracking part, a biochar collecting part and a biogas collecting part are arranged in the cabinet; the crushing part is located at an inlet in the top of the cabinet and used for crushing garbage, and the output end of the crushing part is connected with the storage bin; the storage bin is used for storing the crushed garbage, and the output end of the storage bin is connected with the conveying part; the output end of the drying part is connected with the cracking part, and the cracking part is used for fully decomposing the garbage; the biochar collecting part is positioned at the bottom of the cracking part and is used for recycling biochar generated by cracking; the biogas collecting part is located at the top of the cracking part and used for recycling biogas generated through cracking, and the device is high in adaptability to complex wet garbage types, high in treatment efficiency, small in secondary pollutant generation amount and suitable for on-site treatment and resource utilization of places and regions where the wet garbage generation amount is small.

The utility model discloses a real-time positioning mechanism for 3C products. The real-time positioning mechanism comprises a moving assembly, a first clamping and positioning assembly and a second clamping and positioning assembly, wherein the first clamping and positioning assembly and the second clamping and positioning assembly are oppositely arranged. The first clamping and positioning assembly and the second clamping and positioning assembly are both arranged on the moving assembly, and when the moving assembly is driven, the first clamping and positioning assembly and the second clamping and positioning assembly are driven to alternately move on the moving assembly. The first clamping and positioning assembly and the second clamping and positioning assembly each comprise a clamping base, a sliding assembly arranged in the clamping base, a spring arranged on the side wall of the clamping base, a positioning and clamping block arranged on the sliding assembly and elastically connected with the spring, and a positioning and fixing block arranged on the clamping base and matched with the positioning and clamping block. The first clamping and positioning assembly and the second clamping and positioning assembly are driven by the moving assembly to alternately move, the carrying efficiency can be improved, products can be rapidly positioned in real time through the clamping and positioning assemblies in the carrying process, and stability and reliability of the 3C products in the carrying process are guaranteed.

The invention discloses a hoist for use in a construction elevator shaft, comprising a wall-mounted guide rail frame, a vertical monitoring device, an intelligent door opening device, an emergency anti-falling device, a guide rail mounting frame, a cage running device and a safety device. The wall-mounted guide rail frame comprises a cylindrical guide rail, a wall-mounted frame body, a fixed ear plate, a diagonal tie rod, a diagonal rod connecting sleeve, a fixing bolt, a high-strength bolt, a rod boss, a rod groove, a transmission rack, a height limit baffle, a limit frame body and a base. The wall-mounted guide rail frame is fixed to a concrete wall in the construction elevator shaft. The front side of the wall-mounted guide rail frame is a cylindrical guide rail with a cylindrical shape and the back side is a square tube-shaped wall-mounted frame body that leans against and is fixed to the concrete wall. The device of the invention is vertically connected by high-strength bolts and is connected to the concrete wall in the elevator shaft, thereby ensuring the stability and reliability of the hoist during operation and solving the safety problems of large wind load, poor stability and high risk in the use of outdoor hoists.

The application discloses a lightning arrester full-state integrated intelligent detection method and system, and belongs to the technical field of intelligent monitoring and diagnosis of power equipment. In view of the problems that the existing lightning arrester detection means is single, the state evaluation is one-sided, and the operating stress and performance degradation cannot be associated, the application proposes a detection scheme covering the full state of the electrical mechanical environment: deploying a multi-source sensor array to synchronously collect full leakage current, vibration and acoustic emission signals, surface and internal temperature fields, and environmental data; constructing a lightning arrester multi-physical field coupling digital twin, deeply fusing real-time sensing data and twin simulation, realizing high-precision extraction of resistive current, internal mechanical anomaly diagnosis and thermal stability evaluation; based on the multi-dimensional evaluation results, using an information fusion decision model, generating a panoramic state evaluation report covering insulation aging degree, mechanical integrity, thermal stability and comprehensive health index, and realizing fault early warning and residual life prediction.

The auxiliary positioning and connecting device for machining the marine diesel engine body bolt hole comprises a screw tap extension rod used for connecting a screw tap and a drilling machine and a positioning sleeve used for limiting deflection of the screw tap extension rod when an internal thread section of the bolt hole is machined, and the upper end of the screw tap extension rod is connected with a tapping cutter handle of the drilling machine. The lower end of the screw tap extension rod is connected with the upper end of the screw tap in a matched mode, the positioning sleeve is matched with the opening position of the upper end of the unthreaded hole, and the screw tap penetrating out of the positioning sleeve is driven by the tapping cutter handle to coaxially machine a threaded hole along the bottom of the unthreaded hole under the anti-deviation guiding effect of the positioning sleeve on the screw tap extension rod. The positioning sleeve is arranged at the hole opening position of the machined unthreaded hole, the screw tap and the drilling machine are connected through the screw tap extension rod, the screw tap coaxially machines the threaded hole along the hole bottom of the unthreaded hole in the state that the screw tap extension rod is matched with the positioning sleeve, the quality problem that the perpendicularity of a bolt hole is out of tolerance in a traditional machining mode is solved, the perpendicularity requirement of the bolt hole is met, and the machining efficiency is improved. The processing quality of products is improved, and smooth production is guaranteed.

The utility model discloses an automatic seedling feeding mechanism of a rice transplanter, and particularly relates to the technical field of rice transplanters, which comprises a frame, two ends of the frame are symmetrically connected with rotating rollers through rotating shafts, a conveyor belt is sleeved between the two rotating rollers, a first motor is fixed on one side of the frame, and a second motor is fixed on the other side of the frame. The output end of the first motor is connected with one of the rotating rollers; and a positioning assembly. The two groups of positioning plates and rollers are symmetrically arranged on the conveying belt, and under the cooperation of the connecting arm, the fixed plates, the first rotating handle, the second rotating handle, the movable column and other structures, the second rotating handle can be controlled to push and pull the two fixed plates to move face to face or back to back, so that the connecting arm can drive the positioning plates to move; the distance between the two positioning plates can be quickly adjusted, so that the two groups of rollers which are symmetrical left and right can accurately limit and guide the seedling tray, the seedling tray is effectively prevented from shaking and shifting during conveying, and the stability and reliability during automatic seedling conveying are greatly ensured.