35results about How to "Accurate positioning" patented technology

The invention provides a method, equipment, a medium and a program product for evaluating protein binding efficiency at a gene transcription level, and relates to the field of biological analysis. The method comprises the following steps: acquiring at least one to-be-detected SNP; ref and Alt sequence pairs are called based on SNP; extracting the number of regulatory proteins combined with the Ref and Alt sequences of the sequence pair; the number of proteins combined with the Ref sequence is calculated and recorded as NumRef, and the number of proteins combined with the Alt sequence is calculated and recorded as NumAlt; and evaluating the influence of the SNP on the protein binding efficiency according to the ratio of the NumRef to the NumAlt. According to the development process, systematic regulation between SNP and transcriptional genome regulation elements is studied, how to evaluate the protein binding efficiency by SNP on the gene transcription level is deeply excavated, life laws implied behind biological data are excavated, and related life science problems are solved.

The utility model discloses a concrete compressive strength detection device which comprises a supporting top plate, a supporting bottom plate and a concrete test piece positioning device, and four supporting columns are arranged between the supporting top plate and the supporting bottom plate; the concrete test piece positioning device comprises connecting plates, a shelving plate and a positioning rod; the connecting plates are respectively welded on one group of two supporting columns which are arranged diagonally; a rotatable connector is arranged on the connecting plate; one end of the positioning rod is provided with a thread and is fixedly connected with the rotatable connector; a right-angle limiting plate is arranged at the other end of the positioning rod; a circular track is arranged in the middle of the supporting bottom plate, a telescopic assembly is arranged below the adjustable camera, supporting legs are arranged on the periphery of the end of the telescopic assembly, and spring connecting rods are arranged between the supporting legs and the telescopic assembly. The concrete compressive strength detection device disclosed by the utility model can be used for accurately positioning the concrete test piece, so that the multi-point compressive strength of the concrete test piece can be simultaneously detected, and the test efficiency and the precision of a test result are improved.

A patient supporting and positioning device comprises a lifting frame used for lifting; the seventh shaft is arranged on the lifting frame; the six-shaft mechanical arm is arranged on the seventh shaft through a connecting seat; the bed board is arranged on the six-axis mechanical arm; wherein roller shutter boxes are arranged on the two sides of the lifting frame, roller shutters capable of automatically contracting are arranged in the roller shutter boxes, the roller shutters are fixed to the connecting bases and used for shielding so that the device can be more attractive, the lifting frame comprises a truss and multiple mounting blocks, and the multiple mounting blocks are arranged at the top of the truss at intervals; the six-axis mechanical arm is connected with the bed board through a torque sensor and used for transmitting force and torque signals to prevent collision, a torsional spring is arranged in the roller shutter box, and the roller shutter can automatically contract into the roller shutter box under the action of the torsional spring. The moving range of the six-shaft mechanical arm is increased through the seventh shaft, the bed plate can be positioned more accurately, the protection effect can be achieved through the roller shutters on the two sides of the sliding table assembly, and the bed is more attractive.

The invention provides a method, a system, equipment, a medium and a program product for identifying candidate functional SNP (Single Nucleotide Polymorphism), and a method, a system, equipment, a medium and a program product for identifying myopia-related candidate functional mutation sites, and relates to the field of biological analysis. According to the invention, transcription and post-transcription regulation are comprehensively integrated, and a macroscopic view of myopia potential genetic molecule imbalance is provided for the first time. The method can be used for researching the possible genetic mechanism of the SNP with the undefined function to other human diseases, so that the interpretability of the SNP related to the diseases is enhanced.

The present invention provides an assembling machine and an assembling process for the substructure of a rail transit station, and relates to the technical field of rail transit station construction equipment. The assembling machine includes a frame, a driving device, a lifting device and a splicing device; the frame includes a machine arm, a front leg, a middle leg, a rear leg, a first telescopic member and at least one second telescopic member, the front leg, the middle leg and the rear leg are respectively connected to the machine arm and support the machine arm, the first telescopic member is suitable for driving the front leg to be telescopic, and the second telescopic member is suitable for driving the middle leg and / or the rear leg to be telescopic; the driving device is arranged on the middle leg and / or the rear leg and is suitable for driving the frame to move; the lifting device and the splicing device are respectively connected to the machine arm in a sliding manner, the lifting device is suitable for lifting prefabricated components, and the splicing device is suitable for splicing prefabricated components. In the present invention, the prefabricated components of the last few rings can be assembled without spending a lot of time and manually disassembling or moving the assembling machine, which can improve the assembly efficiency of the substructure of the rail transit station.

The utility model relates to the technical field of bridge girder boxes, in particular to an assembly type bridge girder box structure which comprises a bridge girder box body, connecting seats are fixedly connected to the bottom and the top of the inner wall of the bridge girder box body, and the inner walls of the connecting seats are in threaded connection with positioning plates through positioning screws. The positioning plate located on the front side is fixedly connected with a front baffle, the positioning plate located on the rear side is fixedly connected with a rear baffle, a vertical plate is fixedly installed on the front side, close to the middle of the front baffle, of the front baffle, the inner wall of the vertical plate is fixedly connected with a shock absorber, and one end of the shock absorber is fixedly connected with an inserting and fixing groove plate. According to the structure, the front baffle and the rear baffle with different structures are arranged in the assembly type bridge girder box, the structures at different positions are inserted to assist in alignment and position finding, the connecting structure in the middle is used for accurately checking the positioning effect, and the rapid position finding and accurate positioning efficiency of the bridge girder box is indirectly improved.

The invention discloses an automatic stock bin structure with an auxiliary falling device, and relates to the technical field of automatic stock bins, the automatic stock bin structure comprises two parallel conveying lines, and material trays loaded with circuit boards are conveyed on the conveying lines respectively; the carrying mechanism comprises a first linear motor, a second linear motor, a lifting air cylinder arranged at the moving end of the second linear motor, and a reversing motor arranged at the output end of the lifting air cylinder; the lapping plate is configured on the output end of the reversing motor; the side wall, close to the conveying line, of the lap joint plate is provided with a material suction assembly used for negative pressure adsorption or putting of the circuit board and a position adjusting mechanism located on one side of the material suction assembly and used for adjusting the position of the circuit board on the material disc. According to the invention, qualified circuit boards can accurately and automatically fall to vacant positions of the trays.

The invention discloses an automatic welding path planning method for rhombic patterns and hard spots on a roller surface of a roller press, which relates to the technical field of roller surface welding and comprises the following steps: acquiring the diameter of the roller surface, the width of the roller surface, the diagonal length of a rhombus and the interval length of the hard spots, acquiring the width of a welding bead of a welding gun in a welding database and the axial movement speed of the welding gun along the roller surface; a final planning value is calculated based on the obtained parameters, meanwhile, the span angle of the current pattern on the roller surface is calculated, and therefore the starting angle of the next pattern is calculated, and a pattern welding task is executed; based on parameters set in the pattern welding task, a relation library Lia4 is built, meanwhile, parameters of the total row number and row position information of the hard spots are obtained, position sorting is carried out, and therefore the hard spot locating welding task is executed; the automatic welding path planning method replaces manual work and semi-automatic equipment to achieve full-automatic, high-efficiency and high-quality diamond pattern and hard spot welding tasks.

The present invention relates to a dual-head shuttle printing machine, comprising two sections of frames connected by a cone pin plate, wherein a feed module, a first printing platform module, a second printing platform module, a screen wiping module, and a discharge module are arranged on the frame in sequence, and an initial positioning module is also arranged above the feed module, wherein the initial positioning module is fixed on the frame by a bracket, and an empty slot is penetrated along the longitudinal center line of the frame connected by the cone pin plate, and the shuttle module is installed inside the frame and longitudinally penetrates the entire frame, and the support platform assembly and the discharge support assembly of the shuttle module pass through the empty slot when they are in a raised state; the frame is provided with a table plate installed at the first printing platform module and the second printing platform module through a fixing element, and the table plate is arranged on both sides of the empty slot. The dual-head shuttle printing machine of the present invention can be connected with other equipment to form a fully automatic printing device with automatic connection.

The utility model provides a quick locating device for alcohol bottles, which relates to the technical field of alcohol bottle processing, and comprises a conveyor belt and automatic labeling equipment, the conveyor belt is provided with a pushing assembly, a discharge port arranged opposite to the pushing assembly, a transition plate and a plurality of limiting blocks, a matched alcohol bottle is placed between every two adjacent limiting blocks, and the automatic labeling equipment is arranged on the conveyor belt. A transition plate with the same height is arranged on one side of the discharge port, and rotatable placing boxes with the same height are arranged on one side of the transition plate at intervals; according to the device, a plurality of alcohol bottles can be placed at equal intervals, so that one alcohol bottle can be conveyed and transferred to the placing box at a time for labeling processing, the alcohol bottle can be accurately positioned and firmly positioned in the transferring process, and only the placing box needs to rotate at a constant speed without pressing down a fixing device; the subsequent labeling effect of the square alcohol bottles is good, the overall automation degree of the device is high, and the labeling defective rate of the square alcohol bottles is greatly reduced.

The invention relates to the technical field of forestry resource monitoring, and discloses a forestry resource dynamic monitoring system and method based on remote sensing images, and the method comprises the steps: generating same-grid time phase remote sensing reflectivity data; generating a continuous canopy occupancy map; generating an inner hole set; measuring the scale of the intrinsic neck; the continuous canopy inner hole topology spectrum intensity is calculated; calculating an inter-layer decoupling topology index; generating a monitoring judgment result; and outputting the change pattern spots. According to the method, a self-adaptive multi-scale erosion sequence is constructed on the basis of the intrinsic neck scale, the Euler feature is combined to quantify the inner hole topology fragmentation process, the inner hole fragmentation degree and the outer envelope stable state are integrated through the interlayer decoupling topology index, change unit judgment and space pattern spot accurate positioning are achieved, and the method has the advantages of being simple in structure and convenient to operate. And missing detection or misjudgment of the change of the deep structure under the forest in the traditional technology is avoided, so that the monitoring result conforms to the actual mechanism of the dynamic change of forest resources.

The present application relates to the technical field of coal mine equipment, and more particularly to a mine hoist guide wheel rope lining automatic online assembly mechanism, which comprises a portal frame, a guide wheel body, a feeding assembly, a feeding assembly and a press-fitting assembly. The portal frame is arranged on one side of the guide wheel body. The feeding assembly is used for conveying the guide wheel rope groove gasket. The feeding assembly is used for feeding the guide wheel rope groove gasket on the feeding assembly to the guide wheel body. The press-fitting assembly comprises a linear actuator, a high-frequency vibrator, an extended connecting rod, a knocking module and a position detection unit. The linear actuator is installed on the portal frame. The output end of the linear actuator is connected with the high-frequency vibrator. The output end of the high-frequency vibrator is connected with the knocking module. The position detection unit is arranged on the knocking module. In this way, the technical problem of high labor intensity and time-consuming and laborious work of workers in the prior art is solved.

The utility model discloses a positioning device for an inner ring of a sealing element of a non-disc type end face spring plug seal, and relates to the technical field of spring plug seals. The sealing device comprises a bottom plate and a sealing piece, wherein a positioning mechanism is arranged on the bottom plate. Through the arrangement of the positioning mechanism, in the process that the two moving seats continuously move away from each other, the multiple springs can generate different deformation according to the radian of the inner side of the PEEK fixing ring, at the moment, the electric valve is closed to separate the sealing cavity from external air, the multiple springs are prevented from rebounding, and the sealing effect is improved. The positioning rods are arranged on the bottom plate, so that the PEEK fixing ring can be positioned at the center of the top of the bottom plate by the positioning grooves in the positioning rods, the sealing element can be accurately positioned and fixed during assembly, deviation in the subsequent use process is avoided, and after the PEEK fixing ring of the same model is positioned by the mechanism, the sealing element can be accurately positioned and fixed. And a plurality of PEEK fixing rings are sequentially positioned and assembled according to the adjusted piston rod, so that the efficiency of assembling a plurality of sealing elements with the same model is improved.

The present invention discloses a fully automatic roll-to-roll double-sided copper laminating machine, which belongs to the field of flexible circuit board processing equipment, and includes a frame, on which a feeding unit, a feeding unit, a film peeling unit, a laminating unit, a hot pressing unit and a material receiving mechanism are arranged; the feeding unit includes a middle-layer feeding device, an upper-layer feeding device and a lower-layer feeding device, which are used to provide the middle-layer material belt, the upper-layer material belt and the lower-layer material belt respectively; the feeding unit includes a front feeding device, a rear feeding device and an adjusting device, the front feeding device and the rear feeding device are used to drag the middle-layer material belt to move, and the adjusting device is located between the front feeding device and the rear feeding device, and is used to monitor the tension of the middle-layer material belt. Two groups of feeding devices can synchronously pull the middle-layer material belt to move, and a detection feedback device is also arranged between the two feeding devices, and the gravity roller is connected to a high-precision magnetic grating reader to quickly provide feedback and adjust the tension of the material belt during feeding.

This invention discloses an installation guidance system and method for prefabricated composite slabs in irregular-shaped formwork systems for public buildings, relating to the field of building technology. It includes a data acquisition module, a calculation and decision-making module, an installation guidance module, and a geometric compensation connection module. The data acquisition module acquires on-site control points, 3D point clouds, and calibration target data, establishes on-site-BIM coordinate correspondence, and outputs original measurement data and quality indicators. The calculation and decision-making module performs rigid body registration and deviation analysis on the point cloud and BIM, solves for the optimal installation posture and tolerance allocation of components, and generates installation command parameters. The installation guidance module projects installation commands to the site using laser, total station, or AR methods, providing real-time prompts for positioning, fine-tuning, and tightening steps and values. The geometric compensation connection module achieves XYZ and angle fine-tuning through adjustable brackets, elliptical slot connections, and edge compressible layers, and reliably locks and cures after grouting while meeting load-bearing requirements. This invention features high accuracy.

The present invention relates to a production device for cutting V-grooves on cardboard and a working method thereof, wherein the output end of a cardboard loading and transferring device is connected to the input end of the V-groove cutting device, and the cardboard loading and transferring device is used to feed the paper to be cut into the V-groove cutting device; the output end of the V-groove cutting device is connected to the input end of the cardboard unloading device, and the V-groove cutting device is used to perform V-groove cutting on the paper; the cardboard unloading device is used to collect the paper after cutting; the cardboard loading and transferring device includes cardboard side guide devices and a cardboard flattening device, and the cardboard flattening device is located between the two side guide devices; the two side guide devices of the cardboard are used to guide the two sides of the transferred cardboard to prevent the cardboard from deviating during the transfer process, and the cardboard flattening device flattens the cardboard again during the transfer process to prevent the cardboard from warping. The V-groove production equipment in the present application can realize automatic loading and unloading, automatic cutting, and has complete functions and high efficiency.

This invention relates to the field of integrated structural and functional design of aero-engines, and discloses a compressor rectifier blade angle adjustment structure and method based on piezoelectric materials. The method utilizes the extension, contraction, or bending deformation of a first and second active pawl to drive the rectifier blade, equipped with ratchet wheels, to rotate to the desired angle. Furthermore, each rectifier blade is designed with two ratchet wheels, which work together to allow the blade to freely rotate in both directions. The first and second anti-return pawls effectively prevent reverse rotation and backtracking during rectifier blade angle adjustment. This invention transforms the reciprocating motion of the first and second active pawls into intermittent rotation of the rectifier blade along a certain direction, moving step by step and accumulating the rotation angle. This allows the rectifier blade angle adjustment range to reach 360°, and the adjustment accuracy can be adjusted by modifying the number of ratchet teeth as needed. This adjustment structure is superior to traditional adjustment structures, and the adjustment method has the advantage of high positioning accuracy.

The utility model belongs to the technical field of automation equipment, and particularly relates to an automatic feeding and discharging system of a numerical control machine tool. The pipe material machining device comprises a pipe material machining machine base, and a feeding port and a hydraulic clamping disc are arranged in the pipe material machining machine base. Shaft raw materials are pushed into the feeding port through the sectional type coaxial feeding assembly, a long and short shaft pushing structure is adopted, a short shaft is used for pushing the materials firstly so that the shaft raw materials can enter the feeding port, then the long shaft is used for pushing the materials so that the shaft raw materials can be pushed into the position to be machined, and the shaft raw materials are fixed through the hydraulic clamping disc. By the adoption of the sectional type material pushing structure, the transverse length of the material pushing structure can be shortened, the occupied area can be reduced, meanwhile, the installation and replacement difficulty can be lowered, the structure is more compact and reasonable, the whole machine is of a full-automatic structure, manual auxiliary carrying is not needed, and the labor intensity of workers is greatly relieved.

The invention relates to a full-automatic continuous injection molding device for a sensor packaging shell and a using method of the full-automatic continuous injection molding device. Comprising an injection mold, the injection mold comprises a mold rear mold provided with a plurality of mold cavities, the mold rear mold is provided with an ejection mechanism used for driving a metal strip to move between the position close to the mold cavities and the position away from the mold cavities, and the ejection mechanism is provided with two sets of guide mechanisms used for guiding feeding and discharging of the metal strip. The two sets of guide mechanisms are located on the two sides of the injection molding area correspondingly, a conveying mechanism is arranged at the discharging end of the rear mold of the mold and comprises a first positioning insert pin, and the first positioning insert pin is connected with a conveying driving assembly driving the first positioning insert pin to drive the metal material belt to move. The conveying mechanism is arranged at the discharging end of the rear mold of the mold, automatic material pulling and feeding of the metal material belt can be achieved, the metal material belt moves under the action of the guiding mechanism, the position accuracy of the metal material belt is guaranteed, the matching accuracy of the metal insert and the mold cavity is high, the injection molding efficiency and the injection molding quality of the packaging shell are improved, the production process is completely reliable, and product consistency is good.

The present application relates to photovoltaic array integration axis positioning control method, including the following steps: the installation position of the first stake and the tail stake of the photovoltaic array is positioned, and the first stake and the tail stake are installed respectively in the corresponding installation position;Install fixed support to the first stake and the tail stake, and install the tensile measuring rope on the top of the two fixed supports, adjust the height of the fixed support, so that the tensile measuring rope is in the preset slope;According to the preset stake spacing, mark on the tensile measuring rope, and install the plumb bob at the mark;The vertical projection of the tip of the plumb bob on the ground is installed in the middle stake;Install the fixed support on the top of the middle stake, and make the top of the fixed support connected to the tensile measuring rope;Install multiple inclination sensors on the tensile measuring rope between the first stake, the middle stake and the tail stake, and adjust the height of the fixed support on the middle stake, aiming at the same inclination data feedback by the multiple inclination sensors.

This invention discloses a visual positioning method and related apparatus for an equipotential robot, relating to the field of power system automation technology. The method includes: constructing an improved deep learning network model, denoted as TR-YOLOv5; acquiring images using a camera on the equipotential robot; identifying Mark points in the images based on TR-YOLOv5; using an iterative approximation coarse positioning method to iteratively adjust the camera's shooting position along the axes until the Mark points exhibit preset geometric features in the image; identifying hardware clamps based on TR-YOLOv5; and executing a vision-assisted dual-arm positioning process to complete assembly. This invention solves the problems of low visual positioning accuracy and poor robustness of existing equipotential robots for small targets in complex dynamic environments.

The invention discloses a surgical mechanical arm force control method, device and equipment and a storage medium. The invention relates to the technical field of mechanical control. The method comprises the following steps: acquiring corresponding mechanical arm original data when the surgical mechanical arm normally operates; and according to the original data of the mechanical arm and the target kinetic model corresponding to the surgical mechanical arm, an actual torque vector corresponding to the surgical mechanical arm is determined. And according to the mechanical arm original data and a target torque compensation model corresponding to the surgical mechanical arm, a compensation torque vector corresponding to the surgical mechanical arm is determined. And determining a target torque vector according to the actual torque vector and the compensation torque vector, and compensating the actual torque vector of the surgical mechanical arm according to the target torque vector, so that each joint of the surgical mechanical arm is accurately positioned, the interference of a non-fixed wire harness is reduced, and the robustness of surgical arm force control can be effectively improved.

The utility model relates to a tunnel vertical frame trolley which comprises a trolley body and an arch frame carrying trolley installed on the top of the trolley body. The two sides of the rear end of the trolley body are each provided with an arch frame lifting unit. Any arch frame lifting unit comprises a lifting longitudinal beam, a translation longitudinal beam, a lifting longitudinal beam, hoisting equipment, at least one first jacking oil cylinder and at least one vertical guide rail; two ends of any guide rail are respectively positioned at the top and the bottom of the trolley main body; a lifting trolley is installed on any guide rail, one end of a lifting longitudinal beam is fixed to the lifting trolley, and the other end of the lifting longitudinal beam backwards extends out of the trolley body. A translation trolley is mounted on the lifting longitudinal beam, and the translation longitudinal beam is fixed on the translation trolley; the lifting longitudinal beam is located on one side of the upper end of the guide rail and driven by the first jacking oil cylinder to ascend and descend. The hoisting equipment is used for driving the lifting longitudinal beam to lift; in the process of transferring the top lagging jack, the top lagging jack moves stably and does not shake, and the safety risk is greatly reduced.

The embodiment of the invention provides assembly type prefabricated part laminated slab stacking and hoisting equipment, and relates to the technical field of hoisting equipment. The assembly type prefabricated part laminated slab stacking and hoisting equipment comprises a frame body and a clamping mechanism arranged on the lower surface of the frame body; the upper surface of the frame body is used for connecting hoisting equipment; an accommodating space for the laminated plate is formed among the four clamping mechanisms; the clamping mechanism comprises a box body, a first driving assembly, a moving seat, a driving arm, a first clamping roller and a clamping piece. According to the stacking and hoisting equipment for the fabricated prefabricated part laminated slabs, through the synergistic effect of the clamping mechanisms, stable clamping and accurate stacking of the laminated slabs are achieved, and the problems that in a traditional hoisting mode, the laminated slabs are prone to falling off, the stacking efficiency is low, and potential safety hazards are large are effectively solved.

This invention provides an automatic continuous injection molding die structure for sensor packaging shells, comprising a metal strip and an injection mold. The metal strip includes a chain belt with a plurality of metal inserts spaced apart along the length of the chain belt. The injection mold includes a rear mold with a plurality of cavities for inserting the metal inserts. The rear mold also includes an ejection mechanism for disengaging the molded product from the cavities. Along the conveying direction of the metal strip, the ejection mechanism sequentially includes a first conveying device, a push plate, and a second conveying device. Both the first and second conveying devices have a first guide groove for the metal strip to pass through. The push plate has a second guide groove for the metal strip to pass through, perpendicular to the conveying direction of the metal strip. The cavities are distributed on both sides of the push plate. This invention also provides a method for using the automatic continuous injection molding die structure for sensor packaging shells.

The utility model provides an adjustable chinlon yarn guide structure, which solves the problem of yarn transmission tension adjustment, and comprises a yarn guide frame body, a plurality of yarn guide wheels are rotatably mounted on the yarn guide frame body, a limiting frame body is mounted on the yarn guide frame body, and the limiting frame body is provided with isolation plates arranged among the yarn guide wheels. Yarn guide holes allowing yarns to penetrate through are formed in the isolation plates respectively, a lifting assembly is installed between the limiting frame body and the yarn guide frame body, and swing assemblies are installed between the isolation plates and the yarn guide holes. The tensioning device has the advantages of being flexible in tensioning force adjustment, stable in structure and the like.

The invention discloses a working device for installing and positioning a railway transponder and a using method. The working device comprises a pair of supports. The center rod is arranged on the pair of supports, the center rod is perpendicular to the pair of steel rails, the center rod is coaxially and rotatably sleeved with a sleeve, the sleeve slides along the center rod, and a laser pen is arranged on the sleeve; the Y-axis measuring scale is arranged on one of the supports, and the Y-axis measuring scale is arranged in the length direction of the steel rail; the X-axis measuring scales are arranged on the two sides of the center rod respectively, the X-axis measuring scales are arranged on the pair of supports in a sliding mode and are perpendicular to the pair of steel rails, the X-axis measuring scales slide in the scale direction of the Y-axis measuring scales, and the side walls, close to the center rod, of the X-axis measuring scales are reflecting surfaces. The railway transponder positioning tool has the beneficial effects that the complex operation problem that multiple persons need to mark and position a railway transponder center line and a transponder mounting base at the same time in the prior art is solved, and the railway transponder positioning tool has the advantages of saving time and labor, being high in working efficiency and the like.

The present invention provides an anti-bedsore multifunctional nursing bed, comprising: a bed board assembly, an anti-bedsore assembly, a nursing assembly and a reset assembly, wherein the bed board assembly comprises a first support bar group, a second support bar group and a support board; a plurality of support bars included in the first support bar group and a plurality of support bars included in the second support bar group are staggered along the length direction of the support board on the side of the support board facing the human body; and the support board is divided into at least two hingedly connected areas; the anti-bedsore assembly is used to alternately lift the first support bar group and the second support bar group; the nursing assembly is used to lift a part of the user's body; when the first support bar group and the second support bar group are alternately lifted, the reset assembly accumulates elastic reset force, and the positioning block in the reset assembly moves along with the support bar in a direction away from the positioning groove; when the support bar descends, the reset assembly releases the elastic reset force to drive the positioning block to fall back into the positioning groove.

The invention discloses a double-layer plate type rigid self-sealing high-temperature heat source dissipation and propagation isolation device, and belongs to the technical field of industrial gate valves. The flat gate valve solves the problem of smoke leakage due to the fact that a large gap is reserved between a gate door and a door frame of an existing common flat gate valve. Comprising a shell, a door frame, a door cover, a Y-shaped guide groove, a heat preservation sealing structure and an isolation door. The shell is arranged in an external flue and is a rectangular frame, an opening is formed in the top face of the shell, the door cover detachably covers the opening in the top face of the shell, the door frame is embedded into the middle of the shell and is a rectangular frame, a Y-shaped guide groove is formed in the top end of the door frame, and heat preservation sealing structures are installed at the left end, the right end and the bottom end of the door frame. The Y-shaped guide groove is a vertical through groove, and a U-shaped groove is formed in the heat preservation sealing structure. The isolation door telescopically penetrates through the Y-shaped guide groove in the vertical direction and then is detachably clamped in the U-shaped groove of the heat preservation sealing structure. And the requirement of preventing high-temperature flue gas from dissipating is met. The device is used for isolating smoke.

The utility model relates to a progressive multifocal lens fitting experience frame, and belongs to the technical field of lens fitting. Comprising an interpupillary distance adjusting mechanism used for adjusting the interpupillary distance corresponding to fitting mirror frames on the two sides of the whole fitting experience frame, the two fitting mirror frames are symmetrically and fixedly welded to the two sides of the interpupillary distance adjusting mechanism and used for installing lenses with different luminosities, and a clamping mechanism is further connected to the middle position of the interpupillary distance adjusting mechanism. The clamping device is used for clamping the whole fitting experience frame on glasses of a fitting person; the interpupillary distance adjusting mechanism comprises an adjusting mechanism middle layer clamped in the middle, a metal cover plate and an interpupillary distance marking bottom plate are arranged on the upper surface and the lower surface of the adjusting mechanism middle layer respectively, and the middle layer, the interpupillary distance marking bottom plate and the metal cover plate are fixedly connected into a whole through locking screws.