66results about How to "Avoid rework" patented technology

The utility model discloses a UPVC pipe bonding auxiliary device relates to pipeline installation field, including slide rail, pipeline support block and two bonding direction adjusting block, be equipped with three slider on the slide rail, slider can freely slide along the slide rail, pipeline support block corresponds with the middle slider, its top is equipped with the semicircle concave cavity that is used for supporting UPVC pipeline, and the two bonding direction adjusting block is equipped with the semicircle concave cavity that is used for supporting the UPVC pipeline. Through the design of the pipe fitting concave cavity formed by combining the cross-shaped concave cavity and the round concave cavity at the bottom, the bonding direction adjusting block can position and support the UPVC pipe fittings, the angle between the two UPVC pipe fittings in the bonding process is ensured to meet the requirements (such as 0 degree, 90 degrees and 180 degrees), the problem of deviation caused by manual naked eye judgment is thoroughly solved, the production efficiency is improved, and the production cost is reduced. And it is ensured that the bonded pipeline is installed in place at a time, reworking is avoided, waste of materials is reduced, and working efficiency is improved.

The invention discloses an EMIR verification method and system, a computer and a storage medium. The method comprises the following steps: appointing a time sequence library file directory, an RC file path and a constraint file path when an automatic script runs; traversing a time sequence library directory through an automatic script, analyzing time sequence library files, and extracting a PVT condition and an RC model corresponding to each file; automatically classifying and mapping the extracted PVT condition and RC model according to a preset classification rule to generate a multi-process corner combination; automatically generating a multi-mode multi-corner-point MMMC configuration file according to the multi-process corner point combination, and outputting a traceable mapping list and an association table; in a chip physical implementation process, dual-stage EMIR verification is executed in a power supply planning stage and a verification stage. According to the method, the MMMC configuration file matched with the angular point is automatically analyzed based on the time sequence library, and staged EMIR verification is combined in the physical implementation process, so that the overall design efficiency and reliability are improved.

The application relates to a battery and a vehicle. The battery comprises a box body, a plurality of battery cell units and a busbar. The box body comprises a mounting space, and the box body is provided with a protruding piece; the plurality of battery cell units are arranged in the mounting space, and each of the battery cell units is provided with a wrapped pole column, and the plurality of wrapped pole columns are arranged on the same side; the busbar is arranged in connection with the plurality of wrapped pole columns, and the busbar comprises a positioning piece which is fixedly arranged with the protruding piece. Due to the positioning piece and the protruding piece, the operator can better determine the welding position, the alignment is facilitated, and the deviation caused by manual positioning can be avoided. In the welding process, the relative position between the busbar and the plurality of wrapped pole columns is difficult to change due to the fixation between the positioning piece and the protruding piece, and thus the position of the busbar can be prevented from being changed due to the accidental touch of the operator.

The application discloses a kind of visual self-compacting grouting design method and system mould of fabricated structure, belong to the technical field of fabricated structure construction.For the defects such as traditional grouting of fabricated structure invisible, monitoring difficult, easy to cavity segregation and grout waste, the application develops a kind of whole process visible, passive self-compacting grouting method and system mould.The mould is composed of transparent template main body and self-adjusting closing mechanism, and the transparent template includes fixed template and automatic grouting plate, which are connected by tooth groove to form a sealed grouting cavity.The closing mechanism is linked by spring pressure plate, spring group, steel wire and positioning pulley group, and is automatically and accurately closed by the driving of grout pressure and self-weight based on grout pressure and self-weight.The application establishes the quantitative relationship among spring compression amount, grouting pressure and closing angle based on dynamic response analysis, and proposes a new grouting control method, and the mould is designed in a modular way, which can improve construction quality, ensure structure safety and reduce construction cost.

The application discloses a welding method for a high-temperature alloy casing assembly with large wall thickness difference, and adopts double electron beam synchronous welding, generates an electromagnetic field by using an electromagnetic lens inside a welding machine according to the symmetrical positions of two welds, realizes the double electron beam angle deflection function of the electron beam welding machine, deflects the electron beam flow in real time at a high frequency during the welding travel, makes the electron jump at a high frequency of 0.05-500 kHz between two adjacent welds, and obtains the effect that the electron beam synchronously covers and welds the two side welds. The application solves the problems of weld undercutting and burning, effectively reduces the residual stress of the weld, reduces the welding deformation, improves the welding assembly precision of the high-temperature alloy casing parts, and effectively improves the product quality, the use performance and the failure rate of the high-temperature alloy casing.

This utility model relates to the field of auxiliary equipment for construction engineering, and discloses a portable material classification, storage, and transportation box for construction engineering. The box includes a storage box with two fixed plates fixedly connected to its bottom inner wall. A motor is fixedly connected to the inner wall of one of the fixed plates, and a gear is fixedly connected to the drive end of the motor. Connecting rods are rotatably connected inside both fixed plates, and a gear is fixedly connected to the outer wall of one of the connecting rods. Transmission plates are fixedly connected to the outer walls of both connecting rods, and connecting rods are fixedly connected to the inner walls of both transmission plates. This utility model reduces the corrosion of the box material by rainwater and acidic or alkaline liquids such as construction site concrete slurry, prevents aluminum alloy oxidation and steel plate rusting, maintains structural strength, and the sealed structure reduces the leakage of volatile gases while preventing the intrusion of external corrosive gases, ensuring the chemical stability of the materials.

The utility model discloses a kind of amorphous alloy three-dimensional roll iron core annealing monitoring models, comprising: support, amorphous alloy three-dimensional roll iron core, high voltage coil, low voltage coil, insulating iron hoop, ac frequency modulation power supply, magnetized busbar and power analyzer, high voltage coil and low voltage coil are set in the upper yoke portion of amorphous alloy three-dimensional roll iron core;Insulating iron hoop is used to fix amorphous alloy three-dimensional roll iron core;Magnetized busbar is supported by insulating support plate and placed in the inner frame of the iron core;Ac frequency modulation power supply is electrically connected with high voltage coil;Voltage clamp and current clamp are electrically connected with low voltage coil respectively;Power analyzer is electrically connected with the voltage clamp and current clamp.

The invention relates to the technical field of ocean platform pipeline design, in particular to an ocean platform pipeline laying method based on reinforcement learning, and the method comprises the following steps: S1, dispersing a pipeline laying region into a three-dimensional grid matrix according to the physical size of an actual cabin of an ocean platform, and marking a pipeline starting point, a pipeline ending point and an impassable region; s2, performing Q-Learning algorithm parameter initialization configuration, defining an action space adaptive to the linear movement characteristics of the ocean platform pipeline, constructing a Q value matrix adaptive to three-dimensional space coordinates and actions, and performing initialization; s3, entering a training round, and continuously updating the value evaluation matrix by dynamically adjusting a greedy criterion, a multi-dimensional reward mechanism and a time sequence difference learning rule; and S4, after the training is completed, starting from the starting point based on the converged Q value matrix, selecting an optimal action through a greedy to generate a final pipeline path, and improving the quality and search efficiency of pipeline laying on the ocean platform.

This invention discloses a field name standard mapping method and system based on semantic matching, specifically relating to the field of data governance technology. The method involves obtaining a set of source fields to be mapped and a set of standard fields from a standard field library; standardizing field names and descriptions and generating textual representations of the fields; generating semantic vectors using a pre-trained language model and recalling a set of candidate mapping pairs; calculating string similarity, synonym expansion matching scores, data type consistency scores, and sample value pattern consistency scores for the candidate mapping pairs; generating a nearest neighbor confusion risk index based on semantic nearest neighbor density, entity category distribution deviation, synonym inflation, and contextual proof, and performing risk gating and correction, combined with difficult example discrimination scores; applying table-level consistency constraints within the same business table or entity domain to obtain the optimal table-level mapping scheme through joint consistency solving; generating confirmation confidence and outputting mapping results that are automatically confirmed or manually reviewed.

This invention relates to an ultra-thin flooring for cold storage with an internal insulation structure and its construction method. The construction method includes the following specific steps: S1: Casting a reinforced concrete floor slab; S2: Sequentially laying a vapor barrier layer, an insulation layer, a waterproof and breathable layer, and a geotextile layer on the reinforced concrete floor slab; S3: Pouring a concrete surface layer on the waterproof and breathable layer. The advantages of this invention are its simple process and convenient construction. Addressing the characteristics of large-area ultra-thin flooring in large concrete cold storage structures—prone to cracking, peeling, and poor flatness—this invention develops an internal insulation structure for ultra-thin cold storage room flooring and its construction method, solving the technical problems of difficult repair after cracking of ultra-thin flooring in low-temperature cold storage, impacting cold storage operation, and low construction efficiency.

The utility model discloses a limiting plate assembly for a calender, and relates to the technical field of automobile leather processing. The limiting plate assembly for the calender comprises a fixing support and a limiting assembly, guide rollers are arranged on the two sides of the fixing support, the limiting assembly is arranged on the guide rollers, the limiting assembly comprises a two-way threaded rod, threaded blocks and a limiting plate, and the two sets of threaded blocks are installed on the two-way threaded rod in a threaded mode and symmetrically distributed front and back; the guide roller is slidably sleeved with two sets of limiting plates which are symmetrically distributed front and back, and the bottoms of the limiting plates and the tops of the threaded blocks are fixedly installed. Through the arrangement of the limiting assembly, leather is clamped, it is ensured that the leather is kept in the center when entering and exiting the calender, leather deviation is avoided, it can be ensured that the leather is subjected to uniform pressure, and therefore the thickness and quality of the calendered leather are more consistent, frequent adjustment and reworking can be avoided through accurate control over leather centering, and the production efficiency is improved. And the production stability and efficiency are improved.

This invention discloses an automated welding production line and welding method for L-shaped ribbed steel bridge deck unit joints, relating to the field of bridge welding manufacturing technology. The automated welding production line includes L-shaped ribbed steel bridge deck units; gantry rails spaced at intervals; a multi-functional gantry workstation mounted on the gantry rails; a vision-teaching collaborative robot located inside the L-shaped ribbed steel bridge deck unit; and a tracked welding workstation located outside the L-shaped ribbed steel bridge deck unit. The automated welding method includes the following steps: S1: assembly and positioning; S2: hoisting and fixing; S3: equipment deployment; S4: first teaching welding; S5: second teaching welding; S6: equipment transfer; S7: repeating steps S2-S6 until all U-shaped groove welds of the T-shaped transverse ribs and partition joints of all L-shaped ribbed steel bridge deck units are completed. This invention solves the technical problems of low welding efficiency and unstable welding quality in existing L-shaped rib joints.

The utility model relates to provide a kind of adjusting support connecting support structure, including support unit, overall is channel steel plate, support unit is along the column between and is provided with multiple groups, the end portion between adjacent support unit constitutes connection, and one end of connecting end plate and the end of support unit constitute connection, and the other end is connected with column, and one end of connecting end plate and the support unit constitute detachable cooperation, connecting end plate is along the length direction position of support unit adjustable, and the end portion of adjacent support unit constitutes detachable connection and distance adjustable, the detachable cooperation of connecting end plate and support unit and the length direction position adjustable design, greatly simplify installation process.Compared with the accurate blanking, complex splicing and professional welding operation of traditional welding mode, construction personnel only need to complete the connection and positioning between support unit and connecting end plate, column by simple dismounting operation, in structural adaptability, the position of connecting end plate is adjustable and the characteristics of support unit end distance adjustable, so that the support structure can flexibly adapt to different sizes, different forms of column and diversified engineering site demand.

The utility model relates to building construction lightning protection structure technical field, specifically disclose a kind of steel structure building roof anti-seepage lightning protection device, including lightning rod and connecting rod positioning piece, lightning rod adopts bending type lightning rod structure, lightning rod includes ''C'' bent pole and vertical connecting rod, the lower part of ''C'' bent pole is installed in horizontal steel joist bottom by connecting rod positioning piece, the lower part of ''C'' bent pole is set as sunken bend angle, vertical connecting rod top is connected on spark arrester connecting rod by connecting rod lightning protection card;The utility model is designed lightning rod and steel joist and are connected using connecting rod positioning piece assembly, avoid field welding operation, operation efficiency is fast, save a lot of manual work;Lightning rod adopts ''C'' type bend structure, and set sunken bend angle, make water flow down from sunken bend angle, avoid water to enter wall interior, avoid the hidden danger of roof water leakage, solve rework problem, save cost.

This invention proposes a live-line work simulation and pre-drill system based on digital twins. A 3D data acquisition module collects 3D point cloud data and real-scene image data of the live-line work site and its surrounding environment. A digital twin model construction module outputs a 1:1 live-line work digital twin scene model based on the dataset output by the 3D data acquisition module. A work simulation and pre-drill module binds physical rigid bodies to each model component and assigns realistic physical parameters. Combined with a pre-set live-line work rule library, it performs multi-scheme simulation and deduction, and outputs the optimal work scheme. A risk warning module compares collision detection data and distance detection data output by the work simulation and pre-drill module with the live-line work rule library, triggering a warning when a potential hazard is detected. A collaborative control unit enables data interaction, command transmission, and collaborative work between different modules, effectively improving the reliability of live-line work simulation and pre-drill.

The application discloses a kind of construction hoist standard section rack automatic positioning installation combination mechanism, more specifically related to machine tool combined machining technical field, including machine tool table, two side tables, two lifting strips and end checking assembly, the upper surface of machine tool table is fixed with two side tables;Two lifting strips are installed between two side tables;End checking assembly is installed on the side of lifting strip.The application has double checking of rack and standard section end, and multi-dimensional comprehensive checking of hole position, tooth groove and side surface position in the middle of rack and standard section, effectively avoids rework caused by end size inconsistency, reduces rework rate in later processing, reduces rework installation cost of machine tool combined machining, thereby solve the high error rate of installation combination, directly lead to rework rate in later processing greatly increases, greatly improve the combined machining cost of machine tool.

The application discloses a kind of organic silicon antifouling paint construction methods for shipbuilding stage, it is related to shipbuilding technical field.The application is determined by the arrangement position of the dock pier of secondary docking stage ship, sets up the antifouling paint construction scheme of segmented stage ship, locates the arrangement position of the dock pier of secondary docking stage in segmented stage, once temporary protective primer is constructed in the non-dock pier area in flat bottom area and vertical bottom area in segmented stage, the original coating of ship area except rudder blade is removed by using superhigh pressure water in secondary docking stage, and the installation area of the surface of rudder blade is re-scrubbed, and the original coating of the edge of the contact surface of rudder blade and dummy rudder is handled to form a groove, and the construction of organic silicon antifouling paint supporting system is completed.The application sets different construction methods for different areas of ship respectively, avoids the waste of self-polishing antifouling paint system in shipbuilding stage, and guarantees the economy, reliability and convenience of organic silicon antifouling paint construction in new ship stage.

The application belongs to the technical field of electric power survey design, and discloses an electric power survey design integration method and system for smart grid construction, which comprises the following steps: extracting preset engineering characteristics of existing survey results in a current engineering area, combining current engineering planning condition characteristics to form a sample set; inputting the sample set into a pre-trained graph neural network to output engineering application probability and instability risk score of each survey result, wherein the nodes of the graph neural network correspond to single survey result, and the edges are constructed based on spatial adjacency, engineering correlation or common participation in design relationship; generating design consistency constraints for survey results meeting a preset threshold; and finally checking the compliance of the design scheme and the constraints. The method realizes substantial integration of survey and design, improves design efficiency and quality, and reduces the risk of rework.

The utility model provides a collapsible loess geotechnical lime soil compaction pile construction device, including the clamping lever hammer, the upper end of clamping lever hammer is provided with the mounting groove, the inside of mounting groove is provided with sensor unit, the inside of sensor unit is provided with displacement sensor and inertial sensor, the back surface fixedly connected with magnet of sensor unit, the upper end fixedly connected with satellite positioning module of clamping lever hammer. The utility model discloses setting sensor unit and satellite positioning module on the clamping lever hammer, real -time accurate collection pile body movement data, dynamic adjustment hammering strength, frequency, filling amount etc. Construction parameter, ensure that the pile is stable, accurate, promote the pile foundation construction quality.

This invention discloses a forming device and its method for producing fibrous fiber products, belonging to the technical field of fibrous fiber product production equipment. It includes a base, a discharging mechanism, a feeding mechanism, a wetting mechanism, and a winding mechanism. The discharging mechanism includes a discharging trough, which is fixedly installed above the base and is used to form fibrous fiber products. The feeding mechanism is installed on the base and is used to transport the fibrous fiber products. The wetting mechanism is installed on the base and includes a rotating head with a hollow structure. When the fibrous fiber products pass through the rotating head, the wetting liquid inside the rotating head completes the wetting of the surface of the fibrous fiber products. The winding mechanism is installed on the base and is used to wind up the wetting fibrous fiber products. This invention achieves uniform forming, uniform surface wetting, and efficient winding of fibrous fiber products through the coordinated operation of the discharging, feeding, wetting, and winding mechanisms.

The application discloses a kind of caisson construction dynamic monitoring and deviation correction linkage method, comprising: in caisson structure and peripheral environment preset multiple type monitoring point, real-time acquisition monitoring data;Based on real-time monitoring data, when caisson inclination, axis displacement, daily sinking volume any one parameter reaches design allowed threshold value, deviation correction start signal is automatically triggered;According to deviation cause, deviation actual value and design allowed threshold value, corresponding deviation correction measure combination is matched;Deviation correction measure implementation process continuously acquires monitoring data, real-time verifies deviation correction effect, until caisson posture recovers to within allowed deviation range;Until caisson elevation, inclination, axis displacement simultaneously satisfy design requirement, stop deviation correction, enter bottom sealing procedure.The application also discloses a kind of caisson construction dynamic monitoring and deviation correction linkage system.The application is by real-time monitoring caisson posture, structure stress, peripheral stratum deformation, combined with symmetrical excavation, local counterweight deviation correction, realizes sinking precision dynamic regulation and control.

The present application belongs to the technical field of petroleum geological exploration, and specifically provides a low-permeability lithologic reservoir porosity overburden correction evaluation method, comprising the following steps: collecting cores, and establishing a porosity overburden change state equation; obtaining triaxial porosity through the porosity overburden change state equation and the net overburden pressure of core burial depth, converting the triaxial porosity into corrected formation porosity using a correction formula, fitting the corrected formation porosity and surface porosity, obtaining a corrected formation porosity and surface porosity fitting formula, and determining and evaluating reservoir porosity according to the corrected formation porosity and surface porosity fitting formula. The present application solves the problems of the existing core collection not being representative, large evaluation error of effective thickness reservoir, large error in formation porosity determination, and low evaluation quality; the cores collected by the present application are highly representative, the evaluation quality of effective thickness reservoir is high, and the determination and evaluation quality of formation porosity is high.

The application discloses an air duct mounting device and a mounting method, and belongs to the technical field of core unit assembly. The device comprises a main body driving assembly, a positioning and stopping assembly, a hook holding control assembly and an auxiliary operation assembly. The main body driving assembly comprises a rod, and a first handle is arranged on the upper portion of the rod. The hook holding control assembly comprises a hook claw arranged at the lower end of the rod and a hook rod penetrating the rod, a boss is arranged on the hook claw, the boss is used for being connected with a groove in the middle portion of the air duct during work, and the air duct is controlled to move up and down and rotate. One end of the hook rod is connected with the hook claw, a second cylindrical pin is arranged on the other end of the hook rod penetrating the rod, the second cylindrical pin is used for driving the hook rod to move up and down by control, and the boss of the hook claw is popped out or withdrawn. The positioning and stopping assembly comprises a stopping sleeve movably sleeved on the upper portion of the rod, and a second handle is arranged on the stopping sleeve. The stopping sleeve is matched with an end groove on the rear end face of the high-vortex first-stage disc rear shaft neck, so that stopping is realized during the tightening process.

A feeding and positioning mechanism for a printer, relating to the field of printing equipment technology, includes: a first support plate and a second support plate fixedly disposed on both sides of the feeding end of the printer body; a first movable plate and a second movable plate movably disposed between the first and second support plates and above the conveyor belt; a first stop plate and a second stop plate respectively disposed on the first and second movable plates for positioning the product; and a driving component for driving the first and second movable plates to move. Using the above technical solution, the driving component drives the first and second movable plates to move, changing the position of the first and second stop plates relative to the conveyor belt. This allows the first and second stop plates to position products of different shapes and sizes, enabling rapid adaptation to changes in product shape and size, improving production efficiency, and offering strong practicality and marketability.

The application discloses an engine cylinder block assembly production line, which comprises a conveying line and a carrier plate part. A cylinder block testing part, a manual installation part, a tightening part, a laser marking part and a CNC part are sequentially arranged along the conveying line. The cylinder block testing part drives the cylinder block to sequentially pass through a first sealing test station and a second sealing test station by a rotating disc unit, and carries out water injection and pressure sealing test and camber sealing test respectively. The conveying line is composed of a flow line unit and a rotating table unit, and can realize turning and turning back arrangement. The carrier plate part is provided with a blocking unit and a jacking unit, and is used for accurate positioning of a workpiece after the workpiece is positioned. The tightening part drives a tightening motor to automatically lock a screw through an XYZ three-coordinate moving platform. A material removing line unit is arranged behind each station, and is used for automatic diversion of unqualified products. The application integrates sealing test, automatic tightening, marking and CNC machining functions, realizes full-automatic conveying and detection of cylinder block assembly, has high test precision, and effectively improves production efficiency and a good product rate.

This utility model discloses a floor slab protective layer spacer ring for quickly marking the position of reinforcing bars. It is made of rigid plastic tubing cut into a hollow ring with two arc-shaped notches at the center of the top. In use, the spacer ring is placed on the top surface of the floor slab formwork before the reinforcing bars are tied. The arc-shaped notches support and restrain the lower outer reinforcing bars of the floor slab, and the height from the bottom of the arc-shaped notches to the bottom surface of the spacer ring is the thickness of the reinforcing bar protective layer. Due to the difference in material and color between plastic and concrete, after the concrete curing and demolding, the bottom surface of the spacer ring will be visible on the bottom of the slab, with its center corresponding to the position of the reinforcing bars. This helps to avoid the reinforcing bars when drilling holes for ceiling installation and electrical work during later decoration. This spacer ring is readily available, easy to process, highly efficient, low-cost, and provides good marking results, making it suitable for cast-in-place concrete slab construction and worthy of promotion.

The utility model discloses a symmetry error measuring device for a key groove on a shaft part, a base is provided with a first V-shaped groove with a vertically upward notch, two vertical rods are arranged at two sides of the first V-shaped groove and can horizontally slide on the base, each vertical rod is connected with a positioning block in a sliding manner, the positioning block is provided with a second V-shaped groove, and the second V-shaped groove is provided with a second V-shaped groove. Notches of the two second V-shaped grooves are oppositely arranged in the sliding direction of the vertical rods, a laser distance measuring sensor is arranged at the same position of each positioning block, the mounting block is connected to one of the vertical rods in a sliding mode, and the measuring column is arranged on the mounting block and moves in the sliding direction of the vertical rods. The device is rapid and convenient to measure the symmetry degree, and compared with a traditional method, the key groove symmetry degree error can be obtained only through one-time calculation, and the detection efficiency is improved.

This invention provides a high-speed storage method and system for 3D point clouds. The method includes compression processing during point cloud data writing and decompression processing during point cloud data reading. After the host file system acquires the point cloud data, it immediately simplifies the point cloud and sends a storage write command to the SSD. Upon receiving the write command, the SSD controller's interaction layer parses the command information and passes it to the FTL. Upon receiving the command information, the FTL requests a pre-compression write buffer space and then initiates DMA to move the point cloud data to be written from the host end into the pre-compression write buffer. This invention ensures transmission speed while achieving fast and effective compression processing of the point cloud data to be stored in the NAND Flash from both the host end and the SSD controller level. This allows for the storage of as much 3D point cloud data as possible within a limited NAND Flash cell, effectively reducing the number of NAND erase / write cycles and extending the lifespan of the NAND Flash.

The utility model discloses a kind of guiding cylinder quick installation device, including base, base is fixed with quick clamping device, flange attachment device and quick positioning device, quick positioning device includes support rod, positioning rod, moving seat, stud and V block, support rod is fixedly connected with base and is slidably connected with moving seat, stud is connected with moving seat by thread and is contact connection with support rod, V block is fixedly connected with base and there is gap with positioning rod, flange attachment device includes first clamping plate, second clamping plate, adjusting column and knob, adjusting column is fixedly connected with knob and is connected with V block by thread, first clamping plate and second clamping plate are respectively located V block both sides and are all connected with adjusting column by thread, first clamping plate and second clamping plate are all with gap with positioning rod, the utility model solves the problem of traditional guiding cylinder quick installation device in guiding cylinder clamping quickness, flange face attachment compactness and guiding cylinder positioning quickness.

The utility model discloses a kind of for central passage body assembly processing with ultrasonic welding tooling, it is related to welding tooling technical field, including die base plate and backing plate, the first compacting mechanism has in the backing plate top, the second compacting mechanism has in the top of one end of the backing plate, the third compacting mechanism has in die base plate one end, the fourth compacting mechanism has in the other end of die base plate.The utility model is positioned to the accurate preposition of the position of each component of central passage body by layered positioning structure on die base plate and backing plate, realizes the quick response and one-time accurate positioning of clamping process, in combination with the multi-angle compacting system formed by rotary cylinder drive connecting rod, movable rod and briquetting, the problems of repeated adjustment component position, clamping foot easy to loosen in traditional welding are solved, clamping confirmation time is greatly shortened, avoid rework, especially suitable for the automatic welding scene of multiple welding points, large size complex parts, significantly improve production rhythm and good product rate.