70results about How to "Reduce adjustability" patented technology

This utility model relates to the field of bending and forming devices, and more particularly to a bending and forming device for a tricycle front fender. The utility model provides a bending and forming device for a tricycle front fender, including a bending machine body, a worktable, a sliding frame, auxiliary wheels, a two-way cylinder, support plates, and an electric slide. A worktable is located on the front side of the bending machine body. An electric slide is longitudinally mounted on the top of the worktable. A two-way cylinder is mounted on the top of the electric slide via an electric slider. Sliding frames are located at both output ends of the two-way cylinder, and auxiliary wheels are rotatably mounted on each sliding frame. Support plates are symmetrically arranged at the front and rear of the top of the worktable. By activating the two-way cylinder, the sliding frame can be pushed to adjust the spacing of the auxiliary wheels, adapting to front fenders of different widths. Compared to manual adjustment, this method is simple and efficient, allowing for rapid switching of parts production, reducing mechanical and manual intervention, significantly improving production efficiency, and meeting the needs of large-scale, high-efficiency production.

The application discloses a kind of progressive forming device, process and process design method of engine boss component, belong to aerospace equipment technical field, the progressive forming process of engine boss component includes the following steps: S1.to high-temperature alloy material is preheated;S2.high-temperature alloy strip after preheating is handled by progressive die, and the boss component is prepared.The process method disclosed in the application effectively solves the problems existing in the traditional processing method by the continuity of production and high-speed production rhythm of progressive die, combined with material heating temperature control system.The process method has the advantages of improving production efficiency, reducing cost, improving product precision and consistency, and reducing deformation risk, etc., and can realize high-quality, high-efficiency boss product production.

The invention relates to a multi-station welding center and method for valve faucet production and machining, and belongs to the technical field of welding equipment. Comprising two welding mechanisms which are arranged side by side, a first electric sliding rail is installed on the inner wall of the bottom of each welding mechanism, a laser welding machine is installed on the top of each first electric sliding rail, a first installation plate is installed on the top of one side of each welding mechanism, and a second installation plate is installed on the top of the other side of each welding mechanism. Double stations are arranged for parallel operation, welding wires are accurately guided through the 35-degree bending frame and the alignment port, and the welding wires are prevented from being damaged by being matched with a flexible wire pressing structure; the wire pressing and air injection linkage design is innovated, protective gas is automatically sprayed during wire pressing, sealing and leakage prevention are achieved during non-working, and the welding defects are reduced through heating wire preheating; a plurality of servo motors and a translation table precisely adjust workpieces, rotation is driven to achieve continuous precise welding of special-shaped welding seams, and the efficiency and quality are improved through full-process automation.

The invention discloses an assembly type adjustable positioning tool for a stand column and a corner connecting box and a construction method thereof.The assembly type adjustable positioning tool comprises a supporting platen, the supporting platen is erected on the ground, strip-shaped through holes are formed in the two opposite ends of a tabletop of the supporting platen respectively, and the strip-shaped through holes in the two ends of the supporting platen are arranged in the same direction; the lower portions of the sliding pedestals are adjustably installed in the strip-shaped through holes, one sliding pedestal is arranged in the opposite ends of the two strip-shaped through holes, and the other sliding pedestals are arranged in the opposite ends of the two strip-shaped through holes; the abutting plate is formed on the side portion of the sliding seat, and the abutting plate abuts against the corner connecting box or the stand column; the base plates are arranged between one sliding pedestal and the stand column and between the stand column and the abutting plate; the limiting plate is formed by the limiting plate and the other sliding pedestal at the opposite ends of the two strip-shaped through holes, and the limiting plate abuts against the opposite sides of the two corner connecting boxes. The problem that an existing tool for assisting modular steel structure assembly cannot meet the assembly precision requirement is solved.

The utility model relates to a kind of sample bottle bottle-opening device, sampling device and stereoscopic structure detection device, it includes drive mechanism, screw cap mechanism, fixed mechanism and tray mechanism, wherein, the support module of tray mechanism includes several modularized racks, rack can make the sample bottle suspended on it Setting;Screw cap mechanism can be clamped to sample bottle, to make under the driving effect of drive mechanism drive sample bottle to carry out multidimensional motion, and can be transferred to the sample bottle placed on tray mechanism to fixed mechanism;The bottle body support plate of fixed mechanism can support the bottle bottom of sample bottle, and by bottle gripper from the opposite side of sample bottle Clamping, to realize the limiting of the bottle body of sample bottle;When the bottle body of sample bottle is limited by fixed mechanism, the bottle-opening gripper of screw cap mechanism can make the bottle cap of sample bottle be limited by the way of tightening bottle-opening gripper, and by bottle-opening motor drive bottle-opening gripper drive bottle cap to rotate.

This invention relates to the technical field of meibomian gland massage, and in particular to an intelligent control method and system for a meibomian gland massager based on AI recognition. The method includes the following steps: acquiring three-dimensional point cloud data of the patient's meibomian gland surface; extracting feature points and constructing their three-dimensional coordinates based on the three-dimensional point cloud data; generating the massage motion trajectory of the massager using an adaptive path planning algorithm based on the three-dimensional coordinates; acquiring image data of the patient's meibomian gland; retrieving massager parameter data from a preset feature database based on the image data; inputting the massager parameter data into a preset control model; outputting the massage time and massage light intensity; and controlling the massager to massage the patient's meibomian glands based on the massage time and massage light intensity. This application has the effect of improving the massage effect on the patient's meibomian glands.

The invention discloses a sludge age self-adaptive regulation and control method and system based on dissolved oxygen trend recognition. Aiming at the problem of impact response lag caused by difficulty in COD on-line measurement, the method comprises the following steps: under the condition of stable water inlet and aeration, filtering and sliding window feature extraction are performed on an on-line DO signal to obtain a regression slope representing the change of DO along with time, and COD rising impact is reliably identified in combination with an ORP persistence criterion. A mechanism and machine learning fusion model is adopted to determine an identification threshold value and a target sludge age SRT, the sludge discharge amount is rapidly adjusted after impact triggering, the treatment capacity is synchronously matched, and aeration is used for assisting in maintaining DO stable. The system integrates an online monitoring module, a DO recognizable interval judgment module, a feature calculation module, a load recognition module, an SRT decision module and a sludge discharge execution module. According to the method, rapid impact recognition and closed-loop regulation and control can be realized without an online COD instrument, and the impact resistance and the operation stability of the process are remarkably improved.

This invention discloses a method and system for designing tunnel smooth blasting charge schemes, relating to the field of tunnel blasting engineering technology. The method includes: collecting and preprocessing basic parameter data required for tunnel smooth blasting design; calculating initial design parameter values ​​for the smooth blasting charge based on smooth blasting design theory and a pre-set parameter calculation model, generating an initial design scheme; inputting the initial design parameter values, cross-sectional geometric parameter data, surrounding rock condition parameter data, explosive parameter data, and historical blasting effect feedback index values ​​into a pre-trained neural network optimization model, outputting optimized smooth blasting charge design parameter values; automatically updating the peripheral hole layout and charge structure in the design scheme based on the optimized design parameter values, generating and outputting the final tunnel smooth blasting charge design scheme. This invention enables intelligent and adaptive design of tunnel smooth blasting charge parameters, improving engineering applicability and molding quality.

The utility model relates to the technical field of educational toys, and discloses a third-order icosahedron magic cube which comprises a ball shaft, a plurality of center blocks, a plurality of angle blocks and a plurality of inner edge blocks. The plurality of ball shafts comprise a plurality of magnetic shaft columns; a plurality of first magnets are arranged in the plurality of center blocks; a plurality of second magnets are arranged in the plurality of angle blocks; a plurality of third magnets are arranged in the plurality of inner edge blocks; the first magnet and the third magnet attract each other, and the second magnet and the third magnet attract each other. The magnets attract each other to assist a player to quickly reset and align the magic cube when the magic cube is restored, so that the restoration speed and the player experience are improved. The three-order icosahedron magic cube aims at solving the problems that a traditional three-order icosahedron magic cube is difficult to align during rotation and is prone to being blocked, and the recovery speed of the magic cube and the experience feeling of players are improved.

This invention provides a mass production machining device for door pillars, belonging to the field of door pillar mass production machining technology. It includes a base, with mounting brackets mounted on the top of the base. The mounting brackets have equidistant first limiting grooves and equidistant mounting grooves on their tops. Four mounting brackets are equidistantly arranged on the base, and one mounting bracket located on one side edge of the base has equidistant first limiting blocks on its top. This invention, by setting up an auxiliary positioning mechanism and a limiting and fixing mechanism, allows the eight first sliding grooves to be quickly positioned to the machining position on the top of the base in one go, avoiding multiple alignment adjustments and improving positioning efficiency. Furthermore, the limiting and fixing mechanism further limits and fixes the transported profile body, ensuring that the profile body remains stable, does not shift, and does not shake during processing, ensuring consistent processing benchmarks.

This invention relates to the field of paper product testing technology, and discloses an intelligent sensing real-time monitoring device for the folding strength of paper corner protectors, comprising: a frame, a conveying mechanism, a testing mechanism, a driving mechanism, and a control center. The conveying mechanism includes an infeed platform and an outlet platform, both mounted on the frame; one end of the infeed platform is connected to an external conveyor belt; the infeed platform is equipped with at least two first electric drive wheels; the two first electric drive wheels are used to collaboratively clamp the paper corner protectors and push them to move; the outlet platform is equipped with a first sensing unit and an electric plate; the testing mechanism includes a detection telescopic rod and a lifting support platform, the detection telescopic rod being located above the lifting support platform; the detection telescopic rod is equipped with a pressure sensor and a displacement sensor; the top surface of the lifting support platform is provided with at least two support columns; the paper corner protector is located between the detection telescopic rod and the support columns to perform three-point bending strength testing on the paper corner protector. This enables real-time testing of each paper corner protector product.

The invention discloses an intelligent electrochromic glasses control method based on health monitoring, glasses, a medium and a processor, and relates to the technical field of intelligent glasses color change control. According to the method, physiological health data and ambient light data of a wearer are synchronously collected, a user regulation and control instruction is combined, a visual load state is analyzed in real time, a lens adjustment requirement matched with the physiological state is generated, a coloring and fading control threshold value of an electrochromic lens is adaptively adjusted, and finally the lens is driven to dynamically adjust the coloring state. The system comprises an acquisition module, a main control module and a control module, and realizes intelligent and personalized color change control. The problem that traditional electrochromic glasses only depend on ambient light and cannot adapt to the physiological state of a user is solved, and the visual comfort and health adaptability are improved.

The invention discloses an agricultural unmanned aerial vehicle path planning method based on a rasterized map and related equipment. The method comprises the following steps: acquiring boundary information of a farmland area to be operated, and performing digital rasterization processing on the farmland area to generate a raster map; performing area division on the farmland area based on the grid map to form a main operation area and turning-around areas located at the two ends of the main operation area; and receiving a starting point and a starting advancing direction specified by a user, generating a bow-shaped reciprocating main operation path covering the main operation area in the main operation area by taking the starting point and the starting advancing direction as path generation constraints, and generating a bow-shaped reciprocating operation path covering the space range of the U-turn area in the space range of the U-turn area. The problems that an existing full-coverage path planning algorithm mainly pursues that a path does not repeatedly sweep the whole area, but the general design cannot meet the special working condition of an agricultural unmanned aerial vehicle in the ploughing operation can be solved.

This invention provides a method and system for dynamic correction of a hoist under speed loop control, relating to the field of data processing. The method includes: acquiring the hoist car's descent information during cargo entry into the hoist car, and performing dynamic correction of the hoist's descent based on this information; collecting the real-time motor speed of the hoist during cargo transportation, and adjusting the phase current of the hoist motor based on the real-time motor speed and a preset motor speed; and acquiring the hoist car's lifting information during cargo exit from the hoist car, and performing dynamic correction of the hoist's lifting based on this information. This method has the advantage of improving the real-time performance and accuracy of hoist correction.

The invention provides a rock breaking method for self-adaptive regulation and control of an electrode form under the action of high-voltage electric pulses, and relates to the technical field of high-voltage rock breaking. The method comprises the following steps: firstly, acquiring multi-feature parameters, constructing a comprehensive evaluation parameter set and a target working condition reference evaluation parameter set, and calculating a working condition deviation index; and then geometric shape parameters including the curvature radius, the blunt degree, the chamfer size, the asymmetry degree and the surface roughness of the end of the high-voltage electrode are introduced, a linear correlation model of the electrode shape and the rock breaking effect is established, and prediction of the rock breaking effect is achieved. And on the basis of the working condition deviation index and the correlation model output result, form sensitivity and form regulation and control criteria are obtained, an electrode form regulation and control instruction set is generated, machining, polishing or replacement is conducted on the end of the electrode, and quantitative optimization and closed-loop regulation and control of the high-voltage electric pulse rock breaking effect are achieved. The problems that in the high-voltage electric pulse rock breaking process in the prior art, data utilization is dispersed, and intelligent regulation and control of the electrode form cannot be supported are solved.

The application discloses a control method, device and equipment of a hybrid power system and a readable medium, which are used for maintaining the power performance of a target vehicle during driving. The method of the application is used for obtaining the parking consumption and the running consumption of the SOC of the target vehicle in a historical time period, and calculating the consumption rate of the SOC of the target vehicle in the historical time period based on the parking consumption and the corresponding weight, the running consumption and the corresponding weight, and then slowing down the consumption rate of the SOC in a target time period when the consumption rate is greater than or equal to a preset consumption rate, and increasing the energy output by the engine as the target, and adjusting the parameter value of the target control parameter. The target control parameter refers to a parameter that has an adjusting capability for the consumption of the SOC of the target vehicle, the end time of the target time period is later than the end time of the historical time period, the parking consumption is generated during the engine parking process, and the running consumption is generated during the engine running process.

This utility model discloses an automatic adjustment mechanism for rail flaw detection wheels, including a frame assembly, a guide frame assembly disposed on the lower left side of the frame assembly, an adjustment frame assembly disposed in the middle of the guide frame assembly, and a detection wheel assembly disposed in the lower middle of the adjustment frame assembly. The frame assembly includes a mounting plate, a guide frame rail, a guide frame compression spring, an adjustment frame rail, and a lever. The frame assembly is connected to an external vehicle body via the mounting plate. The guide frame assembly is connected to the frame assembly via the guide frame rail, and the adjustment frame assembly is connected to the frame assembly via the adjustment frame rail. The guide frame assembly includes a guide wheel, a first water spray nozzle, a guide block, a guide frame rail sleeve, and a translation motor. This adjustment mechanism adopts a cage-type frame structure, which effectively improves the rigidity and stability of the overall structure compared to the poor stability of existing small flaw detection vehicle detection mechanisms, ensuring the stability of the detection wheel during operation and reducing detection errors caused by mechanism swaying.

The application discloses a control method and device for a push-the-bit rotary steerable system, and the method comprises the following steps: inputting formation parameter data into a multi-dimensional data matching model to obtain predicted rib plate adjustment parameters; searching in a constructed formation database to obtain rib plate adjustment parameters matched with the formation characteristics corresponding to the formation parameter data; when the similarity between the predicted rib plate adjustment parameters and the searched rib plate adjustment parameters is greater than a similarity threshold, generating control instructions for each rib plate of the push-the-bit rotary steerable system according to the predicted rib plate adjustment parameters, a design trajectory and an actual trajectory of a well hole in which drilling operation is performed; and sending the control instructions for each rib plate to a driving device of the push-the-bit rotary steerable system to drive the driving device to drive the movement of each rib plate. The application can deeply integrate formation characteristics, realize self-adaptive adjustment of rib plates and keep the resultant force stable, thereby improving the efficiency and quality of drilling operation and reducing operation cost and risk.

This invention provides an aluminum foil conveying offset adjustment device for a rigid box packaging machine, including a fixed support, a fixed bracket, a positioning plate, an adjusting rod, a spherical bearing, a fixed frame, and a guide roller. The fixed support is fixed to the machine body; the fixed bracket is vertically installed at the end of the fixed support to support the adjusting rod; the positioning plate and the fixed bracket are connected to form an adjusting rod channel for limiting the adjustment rod; the adjusting rod passes through the adjusting rod channel and is threadedly connected to the spherical bearing, which is connected to the fixed frame, and the fixed frame is fixed to the end of the guide roller. This invention achieves aluminum foil conveying offset adjustment through the coordinated operation of the fixed support, bracket, and other components, allowing for adjustment without stopping the machine and saving operation time; the precise cooperation of each component improves adjustment accuracy and reduces the number of adjustments and steps; it can drive the displacement of the end of the guide roller to adjust the aluminum foil, ensuring that its position meets process requirements, improving equipment operating efficiency and time, and enhancing the convenience and effectiveness of adjustment.

The utility model relates to a soil humidity induction type irrigation device which comprises a sleeve, a humidity sensor and a drill bit, a soil penetrating assembly is arranged in the sleeve, a supporting assembly is arranged outside the sleeve, the humidity sensor is arranged in the soil penetrating assembly, and the distance between the humidity sensor and the sleeve is adjustable. According to the soil penetrating device, the technical problems that in the prior art, the drill bit is prone to toppling over under the strong wind force or the soft soil environment, and the drill bit is difficult to replace due to abrasion under the hardened soil or complex geological conditions can be solved.

The application discloses a preformed mesh fixing support for oral soft tissue widening, relates to the technical field of oral implantation and repair, and comprises a mesh main body, an edge elastic memory support ring and a suture guiding ring. The mesh main body is made of degradable flexible material. The central part of the mesh main body is a central high-density compression area, and the periphery is a peripheral low-density decompression area. The mesh hole density of the central high-density compression area is higher than that of the peripheral low-density decompression area. The edge elastic memory support ring is arranged at the peripheral edge of the mesh main body, and the suture guiding ring is arranged at a specific position of the edge of the mesh main body and is used for guiding the suture to pass through to realize the fixation of the mesh main body. The application can solve the problems of instability of fixation, complexity of operation, poor area adhesion, easy curling and displacement of material, easy compression of edge blood supply, easy falling of the protection material of the upper palate supply area and the like when the existing soft tissue graft and replacement material mainly rely on traditional suture fixation.

The application discloses a prefabricated corner structure, which comprises a corner module, the corner module comprises a stand column (1) and corner support beams (2) arranged at two ends of the stand column (1) respectively, the corner support beams (2) are respectively provided with fixing pieces (4), the fixing pieces (4) are provided with first strip-shaped adjusting holes, external corner pieces (3) are provided with adjusting pieces (5) at two ends respectively, the adjusting pieces (5) are provided with second strip-shaped adjusting holes, the first strip-shaped adjusting holes and the second strip-shaped adjusting holes are one-to-one corresponding and matched, and the first strip-shaped adjusting holes and the second strip-shaped adjusting holes have an included angle greater than 0° in the same horizontal plane when matched, the relative positions of the fixing pieces and the corresponding adjusting pieces can be adjusted through the design of the strip-shaped holes, the relative positions of the corner support beams and the external corner pieces can be adjusted, and the angle of the outer side surface of the external corner piece can be adjusted. The whole can be connected through screws, 100% prefabrication and more than 95% recycling can be realized.

This invention relates to the field of queue management technology for Ethernet switching chips, specifically to a method for managing the probabilistic random drop of packets in a queue, applied to multi-service queue management in Ethernet switching chips. The method configures drop thresholds, sampling periods, prediction step sizes, congestion change rate thresholds, and target drop ratios for each service queue; calculates the congestion change rate and predicted queue length based on the real-time average queue length and its historical sequence, and determines the direction of threshold adjustment accordingly; determines the adjustment step value based on the deviation between the actual drop ratio and the target drop ratio, and updates the minimum and maximum drop thresholds. When packets are enqueued, a pseudo-random number is generated using a linear feedback shift register, and combined with the congestion change rate to generate a dynamic comparison threshold to complete the random drop judgment. This invention can improve queue congestion response speed and reduce hardware storage resource consumption.

This invention relates to the interdisciplinary field of molecular biology and bioinformatics, specifically to a method and system for designing multi-site mutation primers based on rule constraints and multi-objective optimization. The method includes the following steps: receiving the target DNA sequence and mutation site information; automatically grouping the mutation sites according to their position distribution and spacing in the DNA sequence; determining the corresponding primer design region by extending a fixed length upstream and downstream from the center position of each mutation group; generating multiple candidate primer sequences based on the primer design region using a sliding window method; constructing a multi-objective optimization scoring function based on annealing temperature, GC content, and primer length to comprehensively score and screen the candidate primers to obtain the optimal primer; optimizing the 3' end of the optimal primer to preferentially contain stable bases; and outputting the optimized primer sequence and related design parameters and explanation information, effectively solving the pain points of existing multi-site mutation primer designs.

The utility model discloses automatic regularizing unloading mechanism of labeling machine, including setting in the unloading mechanism body of labeling machine belt conveyer one side, the labeling machine belt conveyer includes conveyer belt, a plurality of baffle are fixedly connected with outside equal interval of conveyer belt, the unloading mechanism body includes: the base, and the bottom four corners rotation installation have the universal wheel of lock with the base. The utility model discloses through setting up a series of structures, can to a plurality of to be pasted label bottle column spare unloading and conveying one by one, be convenient for auxiliary personnel to the automatic accurate control distance horizontal displacement adjustment of stop limit lever, the accurate unloading work of different diameter to be pasted label bottle column spare is limited, avoid a plurality of to be pasted label bottle column spare unloading simultaneously and lead to messy and cause the phenomenon that follow-up is difficult to paste label, realize automatic regularizing unloading work, reduce manual unloading adjustment phenomenon and manpower cost, improve production efficiency, can according to the flexible lifting adjustment of guide material box of different labeling machine belt conveyer height and guide the discharge unloading height, improve applicability.

The application relates to the technical field of fan impeller machining, in particular to a modular fan impeller assembling and welding device, a welding method and a fan impeller. The assembling and welding device comprises the following: a first station provided with a pressing device and a transverse limiting device, which are used for pressing the welding edges of inner and outer blade plates to a lamination state; a second station provided with an upper pressing plate, a lower pressing plate and a rotary driving piece, which are used for realizing welding surface switching; a third station provided with a locking tool and a swing table, which are used for driving the swing of an impeller assembly and completing the welding work of the connecting edges of the outer blade plate and an upper cover; welding mechanical arms are installed at each station; the transverse limiting device comprises two clamping blocks and a clamping driving piece, the opposite surfaces of the two clamping blocks are provided with limiting grooves matched with the inserting connecting edges of the blades, and the opposite surfaces of the supporting block and the pressing block of the pressing device are provided with profiled surfaces matched with the outer blade plate and the inner blade plate, so that the fast and accurate alignment of the welding edges of the inner and outer blade plates is realized, and the spatial position precision of the inserting connecting edges after the blades are formed is guaranteed.

The application provides a top connecting structure of a platform door, which comprises a vertically extending connecting column, an upper end of the connecting column is provided with a first connecting piece which is detachably connected with a top beam, and a lower end of the connecting column is provided with a second connecting piece which is detachably connected with a platform door body. A first adjusting piece is arranged between the first connecting piece and the connecting column, and the relative distance between the first connecting piece and the connecting column can be adjusted along the vertical axis of the connecting column to realize overall height adjustment. The first connecting piece is provided with a waist-shaped connecting hole, and the long axis of the waist-shaped connecting hole is parallel to the length direction of the top beam, and the position of the first connecting piece can be adjusted along the length direction. At least one third connecting piece is arranged on the connecting column between the first connecting piece and the second connecting piece, and a second adjusting piece is arranged between the third connecting piece and the top beam, and the relative distance between the third connecting piece and the top beam in the direction perpendicular to the axis of the connecting column can be adjusted. The structure has multi-direction adjusting capability, can adapt to complex environments such as inconsistent top beam height and uneven length direction, reduces repeated adjustment and on-site processing during installation, improves efficiency, and reduces cost and difficulty.

The application discloses a cross-scene adaptive nutritional meal plan intelligent generation and execution management system, and relates to the technical field of computer information processing.The system builds a scene capability portrait of different application scenes, uniformly models and constraint-compiles nutritional targets, individual constraints and scene execution conditions, and generates executable nutritional meal plans matched with scenes such as hospitals, community medical institutions, enterprises and non-medical institutions.The application adopts a double-engine generation mechanism to improve the executability of the plans while meeting the nutritional constraints, and decomposes the generated plans into executable tasks for process management;through multi-source execution evidence collection and consistency evaluation, the application realizes objective evaluation of the plan execution, and automatically adjusts the plan when execution deviation or risk is triggered, forming a closed-loop adaptive management.The system can improve the adaptability, landability and management continuity of the nutritional meal plan in different scenes.

This application relates to an assembly fixture for step shafts, belonging to the technical field of escalator assembly. It includes a base plate, radial positioning seats, and axial positioning seats. Multiple radial positioning seats are spaced apart along the length of the base plate, and the step shaft is placed on these radial positioning seats along its length. Two axial positioning seats are located at opposite ends of the step shaft along its length and are fixedly mounted on the base plate. During assembly, the operator places the step shaft on the radial positioning seats, achieving radial restraint. At this time, both ends of the step shaft along its length abut against the two axial positioning seats. The axial positioning seats are equipped with locking elements to lock the step shaft and prevent rotation. This application, through the synergistic effect of the radial and axial positioning seats, forms a stable constraint on the step shaft radially and axially, preventing the step shaft from shifting or moving due to external forces or vibrations during assembly.

The application discloses a kind of intelligent scheduling systems of gas tunnel multipoint sensing ventilation unit, it is related to tunnel ventilation control technical field, for solving the problem of gas dispersion instability;The application constructs the intelligent scheduling mechanism for gas tunnel multipoint sensing, chain diagram analysis, path scheduling and closed-loop correction, can carry out unified modeling to gas concentration variation, wind flow state change and ventilation unit action relationship, accurately identify the transfer relationship between high-risk starting subarea and its upstream air supply, downstream diffusion and bypass disturbance, reduce the misjudgment and invalid adjustment caused by single-point threshold control, and combine target scheduling path, abnormal rollback sequence and execution feedback update, realize the phased coordinated control of fan, air door and ventilation opening, thereby improve gas dispersion efficiency, ventilation control stability and abnormal disposal reliability, reduce wind flow fluctuation and local retention risk.