50results about How to "Solve misalignment" patented technology

The invention relates to a membrane electrode frame glue injection process, which comprises the following steps of: 1, respectively dispensing glue on two surfaces of a membrane electrode; step 2, respectively pasting gas diffusion layers on the two surfaces of the membrane electrode after dispensing to form a semi-finished product; the invention relates to the technical field of membrane electrode frame glue injection. According to the membrane electrode frame glue injection process, punching and glue injection are combined together through a glue injection mold structure, glue injection forming can be carried out after through holes are punched in the two sides of a semi-finished product rapidly, the upper frame and the lower frame are connected more tightly, and glue lines on the two sides of the membrane electrode frame can be connected and fixed through communicating holes; the problem of dislocation of the glue lines on the two sides of the membrane electrode in the assembling process of the cell stack is effectively solved, and the sealing performance of the finished cell stack is ensured.

The invention discloses a steel bar integrated profile steel connecting device suitable for a nuclear island and a construction method, and belongs to the technical field of steel bar integrated assembly. The steel bar integrated profile steel connecting device comprises a prefabricated steel bar cage, the prefabricated steel bar cage is composed of a plurality of layers of steel bar meshes, and steel bar trusses are arranged between the adjacent layers of steel bar meshes; c-shaped steel or H-shaped steel is welded and fixed at the end part of the prefabricated reinforcement cage; when the adjacent prefabricated reinforcement cages are connected, the two pieces of C-shaped steel or H-shaped steel of the same size between the adjacent ends are in butt joint and are fixed through bolt connection or welding. Steel bar meshes on the upper layer and the lower layer are in lap joint and welding with C-shaped steel or H-shaped steel at the ends of the prefabricated steel bar cages, the C-shaped steel or the H-shaped steel at the ends of the two same prefabricated steel bar cages is connected, steel bars between the adjacent steel bar cages are rapidly positioned and connected, equal-strength connection of the steel bars is achieved, and the problem that horizontal steel bars cannot be aligned is solved. On-site workload is reduced, and construction efficiency is improved.

The utility model relates to the technical field of anti-collision, and discloses a transportation frame anti-collision mechanism which comprises a base, a connecting column is arranged in the base, an anti-collision head is arranged on one side of the connecting column, a threaded rod is fixedly connected into the anti-collision head, and the outer wall of the threaded rod is in threaded connection with the interior of the connecting column. The outer wall of the threaded rod is in threaded connection with a nut, a clamping groove is formed in the connecting column, a limiting groove is formed in the nut, a limiting plate is arranged in the nut, the outer wall of the limiting plate is slidably connected into the limiting groove, and a conical column is fixedly connected to one side of the limiting plate. According to the anti-collision head, through cooperation of the threaded rod, the nut, the conical column, the limiting plate, the telescopic rod and the first spring, the effect of self-locking the nut is achieved, the problem that after the anti-collision head stretches out and is screwed and fixed through the fastening nut, the nut is prone to loosening due to vibration, and then the anti-collision head is dislocated is solved, and the stability of the anti-collision head is improved.

The invention relates to the technical field of numerical simulation and data processing, in particular to slope stability multi-layer synchronous experiment equipment based on a splitting method and a control system. According to the invention, soil pressure transmission among different slippery mass strips is simulated through the multi-layer synchronous experimental equipment. Through the cooperation of the stress sensor matrix and the oil hydraulic cylinder matrix, the soil pressure of each sliding mass strip block can be transmitted to the next sliding mass strip block in real time, so that the evolution process of the soil pressure in the whole slope system is accurately simulated. The time sequence change of the soil pressure is recorded through the stress sensor, and mechanical modeling is carried out according to the data, so that the dynamic transmission of the soil pressure among different slippery mass strips is realized, and the defect that a soil pressure field is difficult to reproduce in a traditional experimental method is overcome; through the matrix positioning and loss compensation module, the problem of matrix position dislocation of the stress sensors and the oil hydraulic cylinders is solved, so that the positions of the stress sensors and the oil hydraulic cylinders of different sliding mass strip blocks in an experiment can be accurately aligned, and the precision of force field transmission is ensured.

The invention discloses a sliding rail mechanism for a helicopter sliding fairing and the helicopter sliding fairing, and the sliding rail mechanism comprises three sliding rails which are respectively two side sliding rails which are fixedly mounted on a power platform and are symmetrically arranged, and a middle sliding rail which is fixedly mounted on one side wall of a firewall; wherein all the sliding rails are installed in parallel in the heading direction, a dismounting and mounting opening is formed in the middle of each sliding rail, when a pulley at the corresponding position on the sliding fairing slides on the sliding rail at the corresponding position, the pulley is disengaged from and mounted in the dismounting and mounting opening, and a middle blanking cap assembly is arranged at the position of each dismounting and mounting opening; the pulley of the sliding fairing is prevented from being separated from the sliding rail at the corresponding position in the sliding process; each sliding rail is provided with a first limiting mechanism used for preventing a pulley at the corresponding position in the sliding fairing from disengaging from the disassembling and assembling opening position of the sliding rail. Each sliding rail is further provided with a second limiting mechanism used for limiting a pulley at the corresponding position in the sliding fairing to the disassembly and assembly opening position of the sliding rail. Each side sliding rail is provided with a buffering and limiting mechanism used for limiting a pulley at the corresponding position in the sliding fairing to the completely-opened position of the sliding fairing.

The utility model belongs to the technical field of welding, and particularly relates to a case fillet welding clamp jig which comprises a table board, a supporting table is connected to the bottom of the table board, and clamping mechanisms are symmetrically arranged on the top of the table board. The clamping mechanism comprises a fixing table, the fixing table comprises a base, the shape of the base is trapezoidal, the top of the base is connected with a first connecting plate, and the waist part of the base is provided with a barrier strip and a buckling strip; a fillet pushing piece is connected to the side face of the first connecting plate, a box clamping mechanism is connected to the bottom of the base, a box body is clamped between the box clamping mechanism and the fixing table, and an arc-shaped strip is clamped between the fillet pushing piece and the shielding cover. According to the clamp jig, the trapezoid base is combined with the fixing table, and the barrier strip and the buckling strip are arranged on the waist portion of the base, so that the stability and the accuracy of welding operation are effectively improved; the stability of the whole structure is enhanced through the trapezoid base, and accurate positioning of the box body in the clamping process is guaranteed through the design of the blocking strips and the buckling strips.

The invention discloses integrated construction equipment for anti-floating anchor rod construction and a construction method.The integrated construction equipment comprises a vehicle frame body, a high-pressure rotary spraying drilling machine and a hoisting device are arranged at the top of the vehicle frame body, the high-pressure rotary spraying drilling machine is provided with a drilling arm with a through hollow cavity, and the hoisting device is provided with anti-floating anchor rod reinforcing steel bars; after the drilling arm completes drilling, the anti-floating anchor reinforcing steel bar can stretch into the hollow cavity of the drilling arm through the hoisting device, and the construction method adopting the integrated construction equipment has the following technical advantages that firstly, the high-pressure jet grouting drilling machine and the hoisting device are integrated so that continuous construction can be conducted between different construction procedures, and the construction efficiency is greatly improved; 2, when the reinforcing steel bars are hoisted and placed, the drill arm with the hollow cavity is adopted to support the hole, so that the problem that the hole wall is not supported is solved, and the possible hole collapse problem is effectively prevented; and 3, the hoisting device is adopted to restrain the position of the anti-floating anchor rod steel bar in the hollow cavity, so that the construction quality of the anti-floating anchor rod is effectively improved.

The invention discloses a gear position self-learning method, system and equipment of a gear shifting mechanism and a medium, and relates to the technical field of computers.The gear shifting mechanism comprises a reduction gear, a threaded lead screw, a gear shifting fork and a dog-tooth clutch, the reduction gear drives the gear shifting fork through the threaded lead screw to achieve combination and separation of the dog-tooth clutch so as to conduct gear shifting, the method comprises the steps that under the condition that gear position information of a gear shifting mechanism is abnormal, whether the driving state of a target vehicle meets a preset self-learning condition or not is determined; if the self-learning condition is met, the current position of the threaded lead screw is obtained; locked-rotor detection is carried out on the gear shifting mechanism from the current position of the threaded screw rod, and the actual total stroke of the threaded screw rod in the locked-rotor detection process is obtained; if the stroke deviation between the actual total stroke and the preset theoretical total stroke is smaller than or equal to the preset error threshold value, the position information of the actual top dead center and the actual bottom dead center serves as the updated gear position to be stored.

The present invention discloses an auxiliary installation device for a bushing-type electronic transformer for a ring network cabinet, wherein a main box is installed on one side of the transformer body, a sliding plug is symmetrically and slidably installed inside the main box, a pull rod is installed in the middle of the side end face of the sliding plug, and the pull rod is slidably connected to the main box, a frame rod is slidably installed on the end of the pull rod, one end of the frame rod is rotatably installed with a limited seat, and the other end of the frame rod is rotatably installed with a base. The present invention improves the stability of various orientation bolts installed on the transformer body, improves the balance of load force provided by each bolt, effectively solves the warping and misalignment phenomena, indirectly improves the stability of the transformer body in later use, and can make the torsional force borne by the bolts during installation more compatible and matched with the compressive performance of the ring network cabinet and the transformer body, effectively avoids the thread slippage phenomenon, and improves the flexibility, efficiency, convenience, reliability and efficiency of the bolt assembly work.

The application discloses a CAD track turnout multi-stage intelligent linkage connection and adjustment method, comprising the following steps: S1, integrating structured parameters of various turnout types, generating a turnout basic parameter library, and generating an association mapping table recording the logical relationship between turnouts; S2, automatically calling the turnout basic parameter library, calculating the optimal turnout angle and endpoint coordinates, and automatically generating a connecting line; S3, when the position or angle of the reference turnout is adjusted, based on the association mapping table, the adjustment information is transmitted to all associated secondary turnouts, and the secondary turnouts and their connecting lines are driven to be synchronously adapted; S4, real-time collection of the adjusted data, combination of the turnout parameter threshold and the association mapping relationship, recalculation of the optimal connecting path, and generation of a new connecting line. The application can greatly shorten the time consumption of single-group turnout docking, solve the problems of line mispositioning and fracture, guarantee engineering safety, reduce the dependence on the experience of designers, greatly shorten the design cycle and reduce the rework rate.

A visual inspection system for evaluating medical fluid containers, the system comprising: a conveyor for conveying medical fluid containers; a light source located below the conveyor and positioned to illuminate the medical fluid containers; a camera located above the conveyor and positioned to capture a digital image of a seal formed in the medical fluid container; and a processor and memory configured to evaluate the digital image of the seal and identify a defect if one of the following is detected: (i) a leak is detected in the seal, or (ii) misalignment of the seal relative to an edge of the medical fluid container is detected.

The invention relates to the field of mechanical assembly equipment, in particular to a full-automatic oil-retaining bearing and ball bearing combined press-fitting machine which is used for carrying out combined press-fitting on an oil-retaining bearing and a ball bearing. The bearing press-fitting machine comprises a machine table, a bearing placing table, an ejector pin assembly, a press-fitting assembly, an oil-containing bearing feeding mechanism and a ball bearing feeding mechanism, the oil-containing bearing feeding mechanism and the ball bearing feeding mechanism are arranged on the machine table, feeding of oil-containing bearings and ball-containing bearings is achieved through the oil-containing bearing feeding mechanism and the ball bearing feeding mechanism, and through the design of the ejector pin assembly and the press-fitting assembly, the oil-containing bearings and the ball-containing bearings can be pressed. Precise positioning and stable press fit of the oil bearing and the ball placing bearing in the press fitting process are ensured, the problem of deviation or dislocation caused by a simple mechanical structure of traditional equipment is effectively solved, and the consistency and quality of products are improved. And due to the multi-station design and the rotary structure of the bearing placing table, the equipment can carry out bearing press fitting on multiple stations at the same time, the production capacity and flexibility of the equipment are further improved, and the requirements of different production scales are met.

The invention discloses a nail clipper, comprising a clamp body and a chip blocking assembly, wherein the upper cutting body, the lower cutting body and the pressure plate of the clamp body are connected by a pin column; the chip blocking assembly comprises a fixing buckle, a baffle, a locking hook plate and a spring, the fixing buckle is arranged on the upper cutting body, the fixing buckle is provided with a lower buckle part extending downward, the baffle is rotatably connected to one side of the lower cutting body along the length direction, the rotation axis of the baffle rotation extends along the length direction of the lower cutting body, the top surface of the baffle is provided with a blind hole, the bottom surface of the locking hook plate extends into the blind hole, one end of the spring is connected to the bottom surface of the locking hook plate, and the other end of the spring is connected to the bottom surface of the blind hole, the locking hook plate is provided with a transition part extending in the direction of the upper cutting body, and the end of the transition part is connected to an upper buckle part extending upward, so that when the nail clippers are used, the problem of baffle dislocation is solved, thereby reducing the situation that nail scraps leak out or get stuck from the gap between the baffle and the upper cutting body and the lower cutting body, improving the nail scraps collection effect, and thus improving the user experience.

This invention provides a heterogeneous feature fusion method for infrared thermal imaging data, comprising: acquiring and extracting features from a multi-source infrared thermal imaging dataset to obtain a multi-dimensional heterogeneous feature set; processing the multi-dimensional heterogeneous feature set based on a neural implicit field to obtain an implicit feature set and a dynamic fusion weight dataset; fusing the multi-dimensional heterogeneous feature set and the implicit feature set according to the dynamic fusion weight dataset; simultaneously using a physically constrained intelligent agent for correction and compensation; acquiring a primary temperature field and a fused implicit feature set; performing multi-scale decoding and radiation flux correction on the fused implicit feature set; performing smoothing correction in conjunction with the multi-dimensional heterogeneous feature set; acquiring a reconstructed fused image and a radiation flux correction field; performing inverse compensation on the reconstructed fused image based on the radiation flux correction field; obtaining a final temperature matrix; and performing temperature measurement uncertainty analysis in conjunction with the primary temperature field to obtain a temperature measurement confidence spectrum, thereby ensuring the absolute accuracy and reliability of the final temperature measurement result.

This utility model provides a steel strip butt welding machine, relating to the technical field of steel strip butt welding machines. The machine includes a butt welding machine with a welding head and a switch on its side. A fixing clamp is also provided on the side of the machine, positioned on both sides of the welding head. A locking element is rotatably connected to the bottom of the fixing clamp. A motor is fixedly connected inside the machine. A grinding wheel, driven by the motor, is also provided on the side of the machine. A pressing device and an alignment device are also provided on the side of the machine. The alignment device includes a rectangular frame fixedly connected to the side of the machine, with a threaded rod rotatably connected inside the rectangular frame. A slider is threadedly connected to the surface of the threaded rod, and a rectangular strip is fixedly connected to the side of the slider. This utility model solves the problem of steel strip misalignment during the butt welding process due to operator hand-held operation.

The invention provides an auxiliary mounting device for a crane beam and a brake plate and a construction method of the auxiliary mounting device. The auxiliary mounting device comprises a transverse adjusting unit and a longitudinal adjusting unit, and the two ends of the longitudinal adjusting unit are connected with the transverse adjusting unit; the bottoms of the transverse adjusting unit and the longitudinal adjusting unit are of hollow structures; a plurality of bolt buckles are mounted on the hollow structure in parallel; wherein the transverse adjusting unit is used for aligning a brake plate with the transverse edge of a crane beam, the longitudinal adjusting unit is used for aligning the brake plate with the longitudinal edge of the crane beam, and the bolt buckles are used for positioning high-strength bolt holes in the brake plate and the crane beam; the installation precision of the crane beam is improved, the problem that upper and lower bolt holes of the brake plate and the crane beam are staggered due to insufficient precision is solved, the problem that high-strength bolts are difficult to install is avoided, the work efficiency is improved, and the rework probability is reduced.

A stacked drying box comprises a box body, a box passing conveying mechanism and a stacking driving mechanism. A drying station and a plate conveying station are arranged in the compartment main body; the drying station is located above the plate conveying station. The conveying end of the compartment-passing conveying mechanism is used for driving a plurality of dried objects to horizontally pass through the plate conveying station in sequence; the output end of the stacking driver moves in a lifting mode and is used for driving the dried objects at the conveying end of the compartment-passing conveying mechanism to move upwards in the direction of the drying station, so that the stacked dried objects are separated from the conveying end of the compartment-passing conveying mechanism. The stacking plug pin is horizontally adjusted to support the dried objects stacked at the lowermost part; and the driving ascending of the stacking driver to the dried objects and the horizontal movement of the stacking plug pin to support the dried objects can be alternatively performed in a resettable manner, so that the plurality of dried objects are sequentially stacked on the drying station. According to the scheme, a plurality of dried objects can be stacked on the drying station in sequence, and the problems that when dried objects are fed into an existing drying box, the height position needs to be adjusted frequently, the feeding and discharging efficiency is low, and alignment is not accurate are solved.

The utility model relates to the technical field of hollow glass production equipment, in particular to a hollow glass production laminating machine which comprises a base, a positioning mechanism, an adjusting mechanism, a clamping mechanism and a buffering mechanism. The positioning mechanism performs preliminary positioning and path guiding on glass through a limiting column, a guide rod and a fixed seat; the adjusting mechanism achieves horizontal and rotary adjustment through a sliding rail, a motor and a transmission assembly. The clamping mechanism utilizes a clamping arm and a suction cup to ensure stable clamping of the glass; the buffer mechanism absorbs impact force through a spring and a supporting rod and provides additional support. The clamping device can flexibly meet the requirements of glass lamination of different sizes and shapes, the clamping stability and the lamination precision are improved, vibration and collision damage are reduced, and the efficiency and the safety of hollow glass production are improved.

The invention provides foldable rotary display equipment which comprises a base, an equipment body and a light bar, the base is a non-rotating part, the equipment body is a rotating part, the light bar is arranged on the equipment body in a foldable mode, and the light bar and the equipment body are provided with matched electromagnetic devices used for achieving folding of the light bar. The problem of picture dislocation in the combined display process of the rotary display screen is solved by folding the light bars.

The invention relates to the technical field of nuclear power building construction, in particular to a steel bar modular connecting device and a construction method thereof. The connecting device comprises first profile steel and second profile steel; the first profile steel comprises a connecting frame and a first connecting plate, the connecting frame is provided with a cavity, an opening is formed in one side of the connecting frame, the first connecting plate is located on the side, away from the opening, of the connecting frame, and the end of the first connecting plate is used for being connected with a reinforcement cage; the second profile steel comprises an inserting plate and a second connecting plate, the inserting plate is inserted into the cavity of the connecting frame through the opening, the second connecting plate is located on the side, away from the first connecting plate, of the inserting plate, and the end of the second connecting plate is used for being connected with another reinforcement cage. The horizontal reinforcing steel bar aligning device solves the horizontal reinforcing steel bar aligning problem and serves as a hoisting tool, the field workload is reduced, meanwhile, the overall rigidity of reinforcing steel bar meshes is improved, deformation caused in the hoisting process is reduced, and the reinforcing steel bar modular construction efficiency and safety are improved.

The present application provides an image stitching method, device, equipment, storage medium and product, the image stitching method comprises the following steps: fusing the shooting distance value between a plurality of shooting devices and the imaging target surface to generate the reference distance feature corresponding to each frame image; inputting the reference distance feature into a pre-trained stitching parameter prediction model to obtain the stitching parameter required for the current frame image stitching; based on the stitching parameter, the images collected by the plurality of shooting devices are initially stitched to form an initial panoramic image; the region of interest is set in the boundary region of the initial panoramic image, and the images in the region of interest are pre-adjusted; the pre-adjusted initial panoramic image is processed to obtain a final panoramic image. The method can fuse the distance between the shooting device and the imaging target surface in real time, and dynamically update the related stitching parameters according to the distance, combine the image features for fine fusion, and avoid the problems of stitching delay and obvious stitching effect fluctuation.

This invention discloses an intelligent control method for a power lithium battery thermal management system, relating to the field of lithium battery technology. The method includes the following steps: collecting operating data of the power lithium battery through a multi-physics field real-time sensing system; performing dynamic thermodynamic modeling and anomaly detection on the operating data based on a digital twin model and an AI large-scale model to generate a real-time control strategy; employing a hierarchical control strategy to perform precise control of the thermal management system, including temperature difference control, condensation quality hierarchical control, and travel condition prediction control; optimizing the control strategy through a vehicle-cloud collaborative computing architecture; and dynamically updating thermal management parameters and fault diagnosis thresholds based on the control results. This invention solves the problems of low control accuracy, high condensation risk, and insufficient energy efficiency optimization in traditional thermal management systems due to their single control strategy and lag response, through multi-physics field sensing, digital twin and AI fusion modeling, hierarchical control, and vehicle-cloud collaboration.

The invention relates to a dynamic radar map real-time feedback motion sensing game space position offset system, and belongs to the technical field of motion sensing game man-machine interaction. The system comprises a gait detection and mapping unit, a displacement estimation and radar scaling unit, a mobile phone orientation determination and coordinate system establishment unit and a system construction and conversion unit. Step-stepping actions of walking of the player are recognized, and steps are mapped into game radar fixed displacement units; on the basis of the previous result, non-walking movement displacement is estimated by fusing sensor data and is scaled to radar coordinates; integrating the data of the gyroscope and the magnetometer to determine the orientation of the mobile phone so as to establish a unified coordinate system; and constructing a relative displacement system, recording a zero reference and converting physical displacement into radar pixel displacement. The effects that complex external hardware is not needed, walking and non-walking actions are accurately matched, and physical-virtual space coordinates are unified are achieved, the problems of positioning deviation and feedback dislocation in the prior art are solved, and the real-time performance and immersion of a motion sensing game are improved.

The invention relates to the technical field of vehicle control, in particular to a mixed-order Koopman tensor decomposition and CBF fused vehicle limit control method. And acquiring the motion state of the target vehicle, and estimating the motion state of the target vehicle at the next moment. And determining each tire force of the target vehicle based on the motion state of the next moment. And determining a state vector of the target vehicle according to the motion state of the next moment and each tire force of the target vehicle, and defining a control input vector. And based on the state vector and the control input vector, constructing a first-order linear Koopman model, a second-order bilinear Koopman model and a third-order high-order Koopman model. And determining and determining the weight of each Koopman model according to the working condition severity comprehensive index of the target vehicle. And calculating a prediction result of each Koopman model, and determining a fusion prediction result according to the weight of each Koopman model. And constructing a nominal controller based on the affine form of the fusion prediction result. And solving the nominal controller, and determining a control input vector at the current moment so as to control the target vehicle.

The utility model discloses a compound seeding machine relates to seeding machine technical field, including base, power, power installation is used for providing electric power on base, the top one side of base is equipped with first sliding slot, second sliding slot, the same sliding frame is equipped in the sliding of first sliding slot and second sliding slot, be equipped with the drive mechanism of drive sliding frame movement between first sliding slot and second sliding slot on base, the lower end of first sliding slot is connected with punching mechanism to sliding frame, the lower end of second sliding slot is connected with seeding mechanism to sliding frame, the both sides of base are all pivotally connected with the wheel. The utility model discloses through the lateral movement accurate coordination of sliding frame punch and sowing position, combines automatic punching, ration seeding and the continuous operation of soil leveling, effectively solved the traditional seeding machine alignment error problem, significantly improved the operation accuracy, cooperativity and efficiency.

The invention provides an EEG signal feature extraction method and system, a storage medium and a terminal. The method comprises the following steps: preprocessing an EEG signal; constructing a multi-scale reference window and a multi-scale test window, and calculating a multi-scale spectrum structure change score of the preprocessed EEG signal; detecting candidate segment boundary points of the preprocessed EEG signal based on the multi-scale spectrum structure change score; on the basis of the candidate segmentation boundary points, EEG adaptive segmentation is obtained; performing Hermite function decomposition on the EEG signal in the EEG adaptive segment to obtain EEG segment level features; and constructing an EEG feature vector based on the EEG segment-level features and the EEG global statistics. According to the EEG signal feature extraction method and system, the storage medium and the terminal, EEG signal features with the characteristics of high event sensitivity, high adaptive ability, excellent stability and the like can be extracted.

The invention discloses a natural gas pipeline cleanliness degree evaluation method and device, equipment and a medium, and relates to the technical field of natural gas pipeline monitoring, and the method comprises the steps: constructing a full-working-condition simulation database of a natural gas pipeline; generating a data-driven flow-roughness response model based on the pressure feature spatial index; performing pressure feature matching and roughness inversion on the actual pressure and the actual flow by using the flow-roughness response model; the roughness serves as an absolute index, a performance index is determined based on the planned flow and the actual flow, an economic index is determined based on the actual flow and the theoretical flow, the absolute index, the performance index and the economic index are input into a three-dimensional pipeline cleanliness evaluation system, and a comprehensive cleanliness degree score is calculated based on an evaluation method; the method is advantaged in that problems of strong physical model dependence, model misalignment, low calculation efficiency and poor multi-condition adaptability are solved, and reliability, accuracy and timeliness of natural gas pipeline cleanliness evaluation are improved.

The invention belongs to the technical field of power transmission tower foundations, and provides a fabricated foundation for a large-diameter steel pipe pole and a construction method of the fabricated foundation. The prefabricated body comprises a plurality of prefabricated blocks, U-shaped steel bars are arranged among the prefabricated blocks, and the anti-seismic property of the foundation is improved through gaps between the adjacent prefabricated blocks; on the basis, the assembly auxiliary plate is arranged, the limiting holes in the two ends of the plate body correspond to the bolt connecting holes in the two adjacent precast blocks in number and position, when the precast blocks are assembled on site, foundation bolts can be arranged in the limiting holes and the bolt connecting holes in advance, and the dislocation problem occurring when the precast blocks are assembled on site is avoided; the problem that after the precast blocks are staggered, the bolt connecting holes and the radial steel pipe rods are staggered, and foundation bolts cannot be installed is solved, meanwhile, the end of the pile body is connected to the gap between every two adjacent precast blocks, certain installation errors exist between the pile body and the precast blocks, and the field assembly difficulty is lowered.

The utility model relates to the technical field of water seal well, concretely is a kind of safe liquid seal device for sewage pipe network, including shell assembly, the inside one side bottom end of shell assembly is connected with the one end of connecting rod, improved safe liquid seal device for sewage pipe network, by the cooperation of screw knob, limit block and sealing plate, make the safe liquid seal device for sewage pipe network during use, realize the quick installation of the water seal well inlet pipe for sewage pipe network, greatly improve the convenience of inlet pipe during installation, to reduce the labor intensity of staff when installing inlet pipe, using the cooperation of connecting rod and arc snap ring, make the safe liquid seal device for sewage pipe network during use, realize the position of inlet pipe is limited and fixed, solve the problem that misplacement or inclination appears after long time use of inlet pipe, to greatly improve the stability of inlet pipe during use, improve the liquid seal effect of sewage pipe network, to meet the demand of safe liquid seal device for sewage pipe network.

This utility model relates to the field of sheet metal joining technology and discloses a mobile sheet metal joining device suitable for on-site operations. It includes a support frame, a fixed bracket at the top, casters at the bottom, and a flooring assembly inside the support frame. The flooring assembly includes a first support block, the bottom of which is fixedly connected to the inner wall of the support frame. A motor is fixedly connected inside the first support block, and a first rotating plate is fixedly connected to the output end of the motor. A second rotating plate is rotatably connected to the side wall of the first rotating plate, and a limiting plate is fixedly connected to the side wall of the support frame. In this utility model, the motor drives the first rotating plate to rotate, which in turn drives the second rotating plate to rotate. The second rotating plate then drives a sliding plate to rest against the inner wall of the limiting plate. The sliding plate presses the anti-slip plate against the ground, solving the problem of swaying and instability that occurs during the movement of the support frame and improving the stability of the sheet metal joining device.