154results about How to "Guarantee job security" patented technology

The utility model relates to a drilling tool for a cable bracket on the side wall of a bridge. Comprising a supporting frame, an operating rod and an electric drill fixing frame, the supporting frame comprises a bridge side wall top placing frame and an electric drill containing frame, and the bridge side wall top placing frame is formed by connecting two parallel rods through a transverse connecting rod; the electric drill containing frame is formed by connecting two rectangular frames through a transverse rod and fixedly connected with two parallel rods on the top of the side wall of the bridge, and the two ends of the two parallel rods are perpendicularly connected with two vertical rods respectively. Rolling wheels are installed at the bottoms of rods arranged in parallel on the two bridge side wall top placement frames and the sides, close to the electric drill containing frame, of the two vertical rods arranged in parallel and connected with the rods, an operator standing platform is connected to the bottoms of the two vertical rods close to the side of the control rod, one end of the control rod is connected with the electric drill containing frame, and the other end of the control rod is connected with the electric drill containing frame. The transverse connecting rod is connected with a bridge side wall top mounting frame. The method has the effects of simplicity in operation, high construction efficiency and safety in operation.

The utility model discloses a dam grouting cover plate concrete pouring formwork lifting device, and relates to the technical field of water conservancy projects, in particular to a dam grouting cover plate concrete pouring formwork lifting device which comprises a combined steel formwork, and the upper surface of the combined steel formwork is fixedly connected with a supporting plate. A guardrail A is fixedly connected to one side of the supporting plate, and a steel frame is fixedly connected to the other side of the upper surface of the combined steel formwork. During use, after a grouting cover plate foundation is excavated, a winch is installed on the top of the foundation, a balance weight is made, the combined steel formwork is connected through a steel rope, the winch is used for moving the combined steel formwork to the position where concrete is poured, a formwork balance weight block is installed on the combined steel formwork to be fixed after the balance weight is determined, and the formwork balance weight block is moved out after the concrete is poured. And the combined steel formwork is lifted to the position of the next bin to be fixed through a winch, and after the combined steel formwork is lifted, a specially-assigned person is dispatched to the operation platform for plastering of the previous pouring bin.

The invention discloses a tool for live-line mounting and dismounting of a lightning arrester insulating rod, and relates to the technical field of power maintenance. An insulating rod; the clamping mechanism is used for clamping a lightning arrester and comprises a frame body, clamp assemblies, a position adjusting block and a fixing clamp, the frame body is connected with the top end of the insulating rod through a universal locking mechanism, a sliding groove is formed in the frame body in the length direction of the frame body, the position adjusting block is slidably arranged in the sliding groove in a sleeved mode, and the clamp assemblies are fixed to the two ends of the position adjusting block respectively. The distance between the two clamp assemblies corresponds to the distance between porcelain bushings of the lightning arrester. The fixing clamp is arranged at the upper end of the frame body; the bolt disassembling and assembling assembly comprises an electric wrench and a magnetic adsorption sleeve, the electric wrench is fixed to the end of the frame body through a fixing clamp, and the magnetic adsorption sleeve is installed on the electric wrench. The problems that in the prior art, a lightning arrester bolt is not easy to disassemble and assemble, the lightning arrester installation shielding workload is large and the like are solved, the workload of lightning arrester overhaul, installation and replacement is reduced, and the lightning arrester replacement efficiency is improved.

The invention relates to a method, device and equipment for dividing warning areas during ship filling and a storage medium, and belongs to the technical field of traffic ships, the method comprises the steps that a ship simulation model during ship filling is established based on ANSYS Fluent, and ship filling comprises filling from a filling ship to a filled ship; carrying out limit analysis on the ship load working condition based on the ship simulation model to obtain the combustible gas distribution condition of the filling ship and the filled ship under the limit condition; and based on the combustible gas distribution condition of the filling ship and the filled ship under the limit condition, dividing a warning area during ship filling. And safe operation of the ship in the aspects of arrangement scheme, operation process, safety protection, safeguard measures and the like is ensured.

The invention relates to the field of crane jib hoisting load detection, and particularly discloses a large crane jib hoisting load intelligent detection method, which comprises the following steps of: detecting and checking a weighing related sensor before weighing so as to guarantee the precision of a measuring instrument; on the basis of historical weighing data and working environment data of the crane, a temperature-weighing deviation correlation model and a wind power-weighing deviation correlation model are constructed, working environment data when the crane extracts heavy objects are obtained, the compensation amount of the hoisting weight of the crane based on environmental factors is analyzed, and then the preliminarily calculated hoisting weight of the crane is corrected; therefore, the influence of environmental factors on the weighing result is reduced, and the reliability of the weighing result is improved. By monitoring the load moment of each section of suspension arm of the crane in real time and comparing the load moment with the allowable maximum load moment, whether the crane is overloaded or not is judged, and early warning is performed, so that a crane overload evaluation system is perfected, and serious accidents such as tipping of the crane due to overload are effectively prevented.

The invention relates to the field of grain storage, in particular to a grain in-warehouse and out-warehouse system and a grain in-warehouse and out-warehouse method, the grain in-warehouse and out-warehouse system has multiple functions such as grain unloading, warehousing and flattening, is compact in structure and high in integration degree, and meets multiple application scenes such as grain in-warehouse and out-warehouse of a horizontal warehouse; sufficient grain unloading of grain transporting vehicles of various specifications is met, and the device is suitable for horizontal warehouses of various widths and windows of various heights; the control device can achieve automatic control and unmanned operation, the operation safety is guaranteed through remote operation and maintenance, and the operation efficiency is improved; pneumatic conveying is adopted, and the grain breakage rate is low; pollution of dust overflow to the granary is reduced; according to the grain warehouse-in and warehouse-out method, the environment sensing unit, the first dynamic sensing unit and the second dynamic sensing unit are used for providing control signals for the grain warehouse-in and warehouse-out system, automatic control over the grain warehouse-in and warehouse-out system is achieved, manpower consumption is reduced, the grain warehouse-in and warehouse-out efficiency is improved, the grain carrying difficulty is reduced, and the equipment control number is reduced; and the safety of operators is ensured.

The invention relates to the technical field of casting equipment, and particularly discloses a camshaft casting continuous production device and method.The device comprises an electric induction furnace and a slag salvaging mechanism, and the electric induction furnace comprises a furnace body and a support arranged on the furnace body and close to a furnace opening; the slag salvaging mechanism comprises an outer sleeve rotationally connected with the support, a spiral conveyor coaxially arranged in the outer sleeve, and at least one intermittent slag collecting assembly, wherein one end of the outer sleeve extends into the furnace body from the furnace opening. A slag inlet and a slag outlet are formed in the outer sleeve in the axial direction at intervals, the intermittent slag collecting assembly is constructed to continuously collect dross in molten iron in the furnace body and extrude the dross into the outer sleeve from the slag inlet, and the spiral material conveying machine is constructed to continuously convey the dross from the slag inlet to the slag outlet and discharge the dross, so that the time difference between manual slag salvaging and connection of previous and later procedures is effectively solved; the continuity of casting production is guaranteed, and the production efficiency is improved to adapt to the large-scale production requirement; and meanwhile, the consistency of the deslagging degree is ensured through automatic deslagging operation, and the stability of the quality of the camshaft blank is improved.

A battery thermal runaway multi-stage early warning device and its control method belong to the technical field of lithium ion power battery safety monitoring. In the device, the capacitor displacement sensor adopts a parallel plate capacitor structure to monitor the deformation of the battery cell; the three-layer step temperature sensor is composed of three layers of temperature changing materials arranged in concentric circles, independently outputs step signals of three temperature nodes of 85 DEG C, 135 DEG C and 200 DEG C, and realizes the internal temperature monitoring of the battery; the pressure sensor of the pressure relief valve film monitors the pressure change at the battery pressure relief valve. After the signals of various sensors are collected and processed, they are input into the logic judgment unit, combined with the multi-signal composite judgment to output the three-stage early warning signal, and then driven by the isolation driving unit to drive the corresponding LED indication. The valve adopts triple sensing fusion and pure hardware logic hierarchical judgment, realizes accurate early warning of early, middle and late thermal runaway, has fast response speed, high reliability, compact structure and is suitable for various batteries, and can effectively improve the safety of battery use.

The application discloses an automatic replacement system of color photovoltaic adhesive film, and particularly relates to the photovoltaic power station operation and maintenance technical field, comprising a sensing and detecting module, a decision control module, an execution operation module, a material processing and supply module and a safety auxiliary module; the sensing and detecting module is used for acquiring the position, contour and surface state data of the photovoltaic module; the application constructs a three-dimensional grid model of the module through the decision control module, realizes intelligent scoring and global path optimization of the work unit based on a rule base, and generates an optimal work sequence; through adaptive process parameter adjustment in the execution operation module, the hot air power and the winding tension are dynamically adjusted according to the surface color, temperature and defect characteristics of the module, so that the old adhesive film peeling quality and the new adhesive film laying precision are significantly improved; the whole-process automation from detection, decision, execution to quality review is realized, the replacement efficiency and quality consistency are effectively improved, and the work safety is ensured.

The utility model relates to the technical field of winch lifting devices, and discloses a safety type double-output winch lifting device which comprises a bottom plate, a plurality of fixing plates are fixedly connected to the side face of the bottom plate, first shells are fixedly connected to the side faces of the two fixing plates, and driving assemblies are arranged on the inner sides of the two first shells. Second shells are fixedly connected to the side faces of the other two fixing plates, clamping assemblies are arranged on the inner sides of the second shells, a plurality of supporting plates are fixedly connected to the side face of the bottom plate, and reciprocating limiting assemblies are arranged on the side faces of the two supporting plates. According to the rope limiting device, the sliding groove lead screw is matched with the limiting rod, the limiting block can move in the direction of the limiting rod, the clamping block moves on the surface of the sliding groove lead screw along with the limiting block, meanwhile, height adjustment of the limiting ring is achieved through the hole shell and the hole plate through the fixing bolt, and therefore the rope is accurately limited. The position of the clamping block on the sliding groove lead screw can be accurately controlled through a groove in the surface of the sliding groove lead screw.

This invention discloses a high-temperature resistant, high-density water-based drilling fluid for ultra-deep wells and its preparation method, belonging to the field of oil and gas drilling technology. The drilling fluid is composed of the following components in parts by weight: 100 parts water, 2-5 parts high-temperature resistant modified clay, 150-280 parts composite weighting agent, 8-15 parts high-temperature resistant polymer filtration loss reducer, 3-8 parts core-shell type high-temperature resistant flow modifier, 4-10 parts nano-composite plugging agent, and 2-5 parts high-temperature stabilizer. This invention effectively solves the technical problems of rheological runaway, increased filtration loss, and barite sedimentation in ultra-deep well high-density water-based drilling fluids under high-temperature conditions above 220℃ by utilizing the high-temperature expansion-disintegration mechanism of the core-shell type flow modifier, nano- to micron-level multi-stage plugging, and the close packing of spherical and irregular weighting materials. It exhibits temperature resistance up to 220℃ and a density of 2.80 g / cm³. 3 It has the advantages of low filtration loss under high temperature and high pressure and good sedimentation stability.

This utility model discloses a safe operating platform for bridge construction, relating to the field of bridge construction. It includes a bottom component, with suspension rods at the upper end of each bottom component. An installation end is fixedly connected to the upper end of each suspension rod, and reinforcing crossbars are fixedly connected to opposite sides of each suspension rod. A side component is located at the lower end of the bottom component. Using this structure, after disengagement, the length of the bottom component can be increased by pulling the side sleeves to both sides. After adjusting the length of the bottom main board, the bottom component can be fixed by connecting the threaded post to the threaded hole, allowing the locking block to engage with the locking hole again. This allows for convenient adjustment of the operating platform's distance to increase the usable area during use. Furthermore, the flexible expansion mechanism allows for quick adjustment of the platform's left and right distance according to actual operational needs, adapting to different scales of work scenarios.

The application discloses an aero-engine cooperative scanning method and device, medium and product. The method comprises the following steps: controlling a continuous detection mechanical arm to perform rough scanning on an aero-engine to obtain a rough point cloud model; forming a plurality of candidate viewpoints according to the rough point cloud model; grouping the candidate viewpoints to obtain a plurality of viewpoint groups and forming a joint frustum visibility matrix; obtaining a target viewpoint group sequence according to the joint frustum visibility matrix; adjusting a bending traction rope and / or a rotating traction rope of the continuous detection mechanical arm to control each industrial camera of the mechanical arm to be positioned at each target viewpoint of each target viewpoint group to perform high-resolution shooting, and obtaining a local fine point cloud; and obtaining a high-precision three-dimensional entity model according to the rough point cloud model and the local fine point cloud. The embodiment of the application fundamentally avoids mechanical interference collision damage, realizes full coverage of a complex curved surface space without dead angle, and improves the three-dimensional reconstruction precision and detection efficiency of the aero-engine.

The utility model discloses a pipeline lifting device of a crane. The upper device and the lower device which are separated from each other are arranged, the lower device is connected and lifted by the steel wire rope through the lifting hook system to control the lower device to ascend and descend, and the upper device comprises a fixing frame, a first limiting device, a rotary driving mechanism, a rotary connecting shaft and a second limiting device. The lower device comprises a rotating column, a limiting rod, a supporting frame, a limiting block and a balance beam, when the limiting rod is connected with the first limiting device in a clamped mode, the rotating column and the fixing frame are mutually fixed, the limiting block is connected with the second limiting device in a clamped mode, and the supporting frame and the balance beam are mutually fixed. The rotary driving mechanism drives the rotary connecting shaft to rotate to drive the balance beam to rotate, so that a steel wire rope can be prevented from being wound when the supporting frame is controlled to rotate, steering control over a pipeline fixed to the supporting frame can be achieved by controlling the supporting frame to rotate, the working intensity is reduced, and the working efficiency is improved. And the operation safety is ensured.

The utility model relates to the technical field of aluminum alloy cast-rolling, in particular to an auxiliary curling device for an aluminum alloy cast-rolling plate strip, which is characterized in that a supporting plate is rotatably connected between two large supporting seats, the front end of the supporting plate is rotatably connected with an auxiliary roller, the aluminum alloy cast-rolling plate strip is slidably connected to the outer wall of the auxiliary roller, and the bottom surface of the supporting plate is fixedly connected with a supporting seat I; a supporting seat II is fixedly connected to the crimping machine base, a hydraulic rod is connected between the supporting seat I and the supporting seat II, the front end of a piston rod of the hydraulic rod is rotationally connected with the supporting seat I, and the bottom of the hydraulic rod is rotationally connected with the supporting seat II; support for the aluminum alloy cast-rolled plate strip is formed between the rolling area shaft and the deflector roller, so that the plate head of the aluminum alloy cast-rolled plate strip can be conveniently and smoothly inserted into the jaw, the plate head of the aluminum alloy cast-rolled plate strip does not need to be manually warped up by means of a tool, the working efficiency is effectively improved, the labor intensity of operators is reduced, and the labor intensity of the operators is reduced. Operators are prevented from being hurt, and working safety is guaranteed.

The application discloses an automatic loading system for an inland river bulk cargo wharf, breaks through the bottleneck of high dependence on manpower, large efficiency fluctuation and many safety risks in traditional bulk cargo operation through multi-technology fusion and system-level collaboration, and constructs an intelligent system for bulk cargo loading and unloading process. Through the application of key technologies such as three-dimensional laser scanning, GPS positioning, digital twinning, intelligent calculation, PLC control, 5G communication and material level detection, the automatic loading of bulk cargo is changed from manual experience driving to data intelligent driving, and core technical support is provided for the automation of the loading and unloading process of the inland river bulk cargo wharf.

The present invention relates to a road maintenance unmanned patrol car system and working method based on drones. The system includes a patrol car, a four-rotor drone and a vehicle-mounted control terminal, wherein the vehicle-mounted control terminal is mounted on the patrol car, and the patrol car includes a drone parking and fixing interface, an alarm device, a visual sensor, an information receiving and control module, a laser ranging module and a visual positioning module arranged on the top; the four-rotor drone includes an alarm device, a visual sensor, an automatic driving controller and a laser ranging module. The present invention not only realizes the unmanned operation of the entire process of road maintenance and sealing operations and the isolation of people and vehicles, thus ensuring the safety of the operation, but also only requires the provision of an inertial navigation module, a laser ranging radar and a monocular camera, without the need for expensive RTK positioning antennas and 3D laser radars, and the automation solution has a low cost.

The utility model belongs to the technical field of automobile industry, concretely relates to an adjustable height turnover platform of engine cylinder cover, including frame body, the frame body top both ends symmetry is provided with anti -overturning lifting structure, the anti -overturning lifting structure includes: U -shaped frame, its bottom one side fixedly connected with door type frame, two symmetry set up in the support rod of door type frame side wall, the support rod is along its length direction and has set up guide groove, sliding axle, its both ends are respectively sliding fit in two guide grooves, the utility model discloses through servo electric jar drive anti -overturning lifting structure displacement, and synchronous linkage support rod coordinated movement, not only has realized the adjustment of installation frame vertical height, also has strengthened the lateral anti -overturning ability of door type frame, can realize the adaptation to different size engine cylinder cover, guarantees the safe operation, can also according to the height difference of operator to the matching of work station level, promotes the operation convenience and work efficiency of engine cylinder cover.

The utility model relates to a resistor cabinet high-temperature heat dissipation protection device, and relates to the technical field of resistor high-temperature heat dissipation protection. The device comprises a cabinet body, a plurality of resistors are arranged in the cabinet body, a speed regulation heat exchange exhaust fan is arranged on the side wall of the cabinet body, a control module is arranged outside the cabinet body, and the speed regulation heat exchange exhaust fan is electrically connected with the control module; a temperature measuring instrument is arranged in the cabinet body and used for detecting the temperature in the cabinet body in real time, the temperature measuring instrument is in communication connection with a control module, the control module controls the rotating speed of the speed regulation heat exchange exhaust fan based on a detection value of the temperature measuring instrument, and filtering air inlet holes are formed in the side wall of the cabinet body. The resistor cabinet has the effects of monitoring the temperature in the resistor cabinet in real time, flexibly adjusting the heat dissipation efficiency according to the amount of heat generated by the resistor, and protecting the use safety of the resistor cabinet.

The application provides a trajectory planning method and system of a mechanical arm continuous synchronization mode, relates to the technical field of mechanical arms, and collects operation related data of a mechanical arm system; a digital twin model is used to simulate the movement process of the mechanical arm along a preset movement trajectory, so as to generate a risk prediction result of the mechanical arm in the continuous synchronization mode; the preset movement trajectory is divided into multiple trajectory segments, and each trajectory segment is optimized and integrated based on the risk prediction result and the movement characteristic parameters of the mechanical arm, so as to form a preliminary operation trajectory; operation state data is analyzed, so as to generate data anomaly information; each mechanical arm in the mechanical arm system is controlled to move according to the preliminary operation trajectory, and real-time operation data of each mechanical arm is collected; the preliminary operation trajectory is adjusted in combination with the data anomaly information and the risk prediction result, so as to obtain a target operation trajectory of the mechanical arm, and safe, efficient and self-adaptive target trajectory operation of the mechanical arm in the continuous synchronization mode is realized.

This invention belongs to the field of mechanical engineering technology and discloses a support device for a telescopic arm of a robot for adding a cover to a mixed-iron car. The device includes a support plate, a limiting box fixedly installed on the top of the support plate, a threaded sleeve movably installed inside the limiting box, and an mounting plate fixedly installed on the top of the threaded sleeve. The mounting plate has a sliding groove inside. Compared with traditional devices, this invention, through the cooperation between the threaded sleeve and the threaded rod, facilitates the slow upward movement of the telescopic arm, greatly improving operational flexibility. It allows the robot to easily cope with different working conditions and positional requirements, expands the working range, reduces adjustment time due to height mismatch, optimizes the work process, significantly enhances work efficiency, and ensures a safe distance between the robot and the mixed-iron workshop through precise height adjustment, reducing operational risks and improving the stability of the telescopic arm during operation, effectively ensuring operational safety.

The utility model relates to the field of hoisting equipment, and discloses dam gate hoisting equipment which comprises two supporting mechanisms and a fixing mechanism, pulley blocks are arranged at the lower ends of the two sides of the front face of the fixing mechanism, lifting hooks are arranged at the lower ends of the two pulley blocks, and a gradienter is arranged in the middle of the lower end of the fixing mechanism. According to the lifting equipment, through the double design of hydraulic driving and sliding adjustment, flexible adjustment of the lifting height and the span is achieved, in the supporting mechanism, a hydraulic cylinder can drive a fixing column to slide up and down, lifting adjustment of the lifting height is rapidly completed, and the lifting requirements of dam gates of different heights are easily met; the movable plate can slide in the fixed plate, the position is locked through the fixing bolts, the span between the two pulley blocks is flexibly changed, hoisting of gates with different widths can be adapted without replacing parts, the universality and construction efficiency of equipment are remarkably improved, and time waste caused by the equipment adaptation problem is reduced.

The utility model provides a contactor service life detection system, and belongs to the technical field of contactor detection. The contactor service life detection system comprises a first voltage detection module, a second voltage detection module, a counting control module, a voltage comparison module, a counting module and a main control module. The first voltage detection module is configured to detect whether the crane is connected with a working power supply, a control end of the counting control module is connected with the first voltage detection module, a first end of the counting control module is connected with a counting power supply, and a second end of the counting control module is connected with a power supply end of the counting module; the second voltage detection module is configured to detect the output voltage of the contactor, the first input end of the voltage comparison module is connected with the second voltage detection module, the second input end of the voltage comparison module is connected with the reference voltage module, the output end of the voltage comparison module is connected with the input end of the counting module, and the output end of the counting module is connected with the main control module. The safety of port operation can be improved.

The invention relates to the technical field of ammonium nitrate fuel oil explosives, in particular to a method for judging the anti-blocking capacity of a modified ammonium nitrate fuel oil explosive and application of the method. The evaluation method comprises the following steps: loading explosive powder to be detected into a container; vertically pressing a heavy object into the container and completely acting on the to-be-tested explosive powder, so that the to-be-tested explosive powder bears a fixed pressure intensity to form a compacted grain; placing the container filled with the compacted grain in a constant temperature box with a preset temperature for heat preservation; the compacted grain is taken out and placed on a measuring instrument to be subjected to a compression test till the grain is crushed; and recording the maximum force value required for crushing and compacting the grain, and taking the maximum force value as the basis for judging the anti-caking capability of the modified ammonium nitrate fuel oil explosive, so that the larger the maximum force value is, the weaker the anti-caking capability is. The invention also provides application of the method. The crushing force value data obtained by the evaluation method is used for screening anti-caking additives, evaluating the anti-caking performance of different modified ammonium nitrate fuel oil explosives and the like. The problem that the modified ammonium nitrate fuel oil explosive series product lacks a scientific and quantitative evaluation method is solved.

The utility model discloses a quick replaceable battery agricultural plant protection unmanned plane belongs to unmanned plane technical field, and only needs to press press block to be able to remove locking when replacing battery, does not need complicated operation or tool, has improved the efficiency and convenience of battery replacement significantly, is especially applicable to the scene that needs frequently replacing battery to prolong the operation time in the agricultural plant protection operation. The quick replaceable battery agricultural plant protection unmanned plane includes unmanned plane frame, and the battery receiving frame is integrally formed and is welded and installed on the unmanned plane frame, the accommodating cavity that the battery body is accommodated is provided on the battery receiving frame, the interface is provided at the bottom in the accommodating cavity, the connecting port that is connected with the interface is installed at the bottom of battery body, the side of battery body is protrudingly provided with the clamping column, and the fixed assembly is installed at the top of battery receiving frame.

The present application relates to the technical field of railway track inspection, and particularly relates to a high-speed railway intelligent track inspection operation robot operation monitoring method and system, the present application combines track turnout state data and seismic influence data to analyze abnormal conditions of track passage detection conditions, and according to the analysis result, analyzes the threat degree of the execution environment of the robot post-earthquake track inspection operation task; combining the robot's own operation data and track turnout state data, analyzes the abnormal conditions of the robot post-earthquake track inspection operation task's own operation control; based on the execution environment threat degree of the robot post-earthquake track inspection operation task, the abnormal conditions of the robot post-earthquake track inspection operation task's own operation control, the track inspection operation risk of the robot post-earthquake track inspection operation task is evaluated; according to the evaluation result, the robot emergency braking early warning is realized, so as to guarantee the operation safety of the inspection robot in the earthquake destructive environment, and the intelligent level of the high-speed railway post-earthquake track inspection operation is significantly improved.

The utility model relates to the technical field of mine anti-fog structures, and discloses a ventilation structure for treating mine underground operation point demisting and dehumidifying, which comprises a ventilation pipe, the lower surface of the ventilation pipe is fixedly connected with a support box, the inner wall of the ventilation pipe is provided with a demisting and dehumidifying assembly, a replacement assembly is arranged above the ventilation pipe, and the replacement assembly is provided with a ventilation hole. An automatic control cabinet is arranged below the supporting box, the demisting and dehumidifying assembly comprises a demisting and dehumidifying plate, and the demisting and dehumidifying plate is arranged on the inner wall of the ventilation pipe. According to the utility model, after the equipment is started, the fan drives air to flow in the ventilation pipe, the air is primarily treated by the demisting and dehumidifying plate, and then is deeply cooled and dehumidified by the refrigeration equipment matched with the evaporative cooler, condensed water is discharged through the drainage pipe, dry air is blown out from the air outlet, and the automatic control cabinet regulates and controls the operation of the equipment. The effects of improving the visibility of the working environment, reducing the fault risk of the equipment caused by humidity, and guaranteeing the working safety of personnel and the stable operation of the equipment are achieved.

This invention relates to the technical field of concealed pipeline mapping, and in particular to an auxiliary device for rapid three-dimensional coordinate positioning of concealed pipelines in installation projects. The invention includes a mother drone equipped with a probe and camera mounted on it. A marking nozzle is connected to the mother drone, and the marking nozzle is connected to and installed on a daughter drone. The mother drone connects the marking nozzle and the daughter drone via a flexible hose and power cable. The device uses a mother drone integrating a probe and camera, enabling multi-angle, omnidirectional spatial scanning and image acquisition of concealed pipelines. This achieves rapid and accurate three-dimensional coordinate positioning of the concealed pipelines, significantly improving the accuracy and reliability of the positioning. The mother drone connects the marking nozzle and the daughter drone via a flexible hose and power cable, enabling remote synchronous control. The daughter drone can flexibly move to the pipeline positioning point and automatically complete on-site marking, avoiding errors associated with traditional manual line drawing and improving the accuracy and consistency of the marking.

This invention discloses a blind zone detection method for handheld point cloud scanning based on the interaction between the acquisition area and the boundary, relating to the fields of 3D scanning and point cloud data processing technology. The method first acquires the device pose and local point cloud, preprocesses it, and then transfers it to a global horizontal coordinate system. A boundary feature extraction engine is used to identify room boundary lines and project them to form a 2D boundary contour map. Simultaneously, an effective acquisition loop is dynamically constructed and projected based on the effective measurement range parameters of the laser scanner and the current ambient lighting conditions. Boolean operations are performed on the effective acquisition loop and the boundary contour map to identify uncovered boundary segments as potential blind zones. The occlusion state is determined using the temporal information of continuous frame point clouds and a ray casting algorithm to identify the effective blind zone. This invention reduces the 3D integrity determination to 2D planar geometric intersection, eliminating the need for prior models and enabling real-time identification of dynamic occlusion and acquisition blind zones. This results in high computational efficiency and significantly improves the success rate and coverage integrity of handheld scanning operations.

This utility model relates to the technical field of steel cable maintenance equipment, and discloses a tension-maintaining clamping tool for aircraft steel cables. It includes a lower clamping plate, with an upper clamping plate at its top. Clamping mechanisms are provided between adjacent parts of the lower and upper clamping plates to hold the steel cable. An installation mechanism is provided on the outer side of the upper clamping plate for opening, closing, and fixing the device. Each clamping mechanism includes a lower clamping seat, the bottom of which is fixedly connected to the bottom inner side of the lower clamping plate. An upper clamping seat is fixedly connected to the top inner side of the upper clamping plate. Adhesive layers are fixedly connected between adjacent parts of the lower and upper clamping seats. In this utility model, when disassembling the steel cable, the cable is placed on the lower clamping seat, supported by the adhesive layer. The upper clamping seat then pushes the adhesive layer down to wrap around the cable, achieving cable clamping, preventing displacement and surface wear, and preventing cable slack during maintenance, effectively ensuring operational safety and efficiency.