49results about How to "Increase displacement" patented technology

The invention provides a pump injection design method based on an effective support coefficient, and belongs to the technical field of oil and gas field development, and the method comprises the following steps: S1, based on a fluid-solid coupling theory, establishing a hydraulic fracture proppant migration equivalent model considering a bedding fracture; s2, with the optimal laying area as the target, the hydraulic fracture proppant migration equivalent model is used for simulating the proppant migration conditions under different parameter combinations, and an effective support coefficient is calculated; s3, based on the calculation result of the effective support coefficient, analyzing the change rule of the effective support coefficient under different parameters, and establishing a distribution pattern; and S4, on the basis of the distribution pattern, the pump injection process is optimized by utilizing the optimal range of the effective support coefficient. By means of the method, optimization of pumping key parameters such as displacement, sand ratio, sand adding particle size and particle size combination can be achieved, improvement of the overall flow conductivity of a shale oil reservoir fracturing fracture system is achieved, and therefore the fracturing effect is improved.

The invention provides a carbon dioxide flooding thickening agent as well as a preparation method and application thereof. The carbon dioxide flooding thickening agent has a structure as shown in a formula I, the weight-average molecular weight of the carbon dioxide flooding thickening agent is 8000 to 50000. According to the invention, the compound with the structure as shown in the formula I is used for thickening the carbon dioxide, and meanwhile, the weight-average molecular weight of the compound is within a specific range, so that the compound has good solubility with the carbon dioxide, high solubility in the carbon dioxide and good tackifying performance, the viscosity of the carbon dioxide is effectively improved, and the mining efficiency is improved; the use of fluorine-containing and silicon-containing materials is avoided, and the method is green, environment-friendly and low in cost.

This application relates to a roof drainage device, comprising a mounting frame, a filter screen, a drain pipe, and a cutting assembly. The drain pipe is vertically arranged and penetrates the roof. The mounting frame is disposed at the inlet of the drain pipe. The filter screen is disposed on the mounting frame and has several elongated filter holes. The cutting assembly includes two cutting blades and a driving unit. The two cutting blades are respectively located on both sides of the filter screen and are slidably connected to the mounting frame. The driving unit is used to bring the two cutting blades closer together and through the filter holes. This application has the effect of improving roof drainage efficiency.

The invention relates to the technical field of glass fiber cloth processing, in particular to an adjustable drying device for polytetrafluoroethylene glass fiber cloth processing, which comprises a base, a supporting plate, a drying mechanism, an adjusting and cooling mechanism, a controller and glass fiber cloth, the supporting plate is arranged on the right side of an inner cavity of the base, the controller is arranged on the front side of the base, and the adjusting and cooling mechanism is arranged on the right side of the inner cavity of the base. The drying mechanism is arranged at the left end of the bottom of the inner cavity of the base and electrically connected with the controller. The relative displacement of the drying barrel and the glass fiber cloth is prolonged, the displacement distance of the glass fiber cloth in the drying process is greatly shortened, the purpose of reducing the occupied area is achieved, the glass fiber cloth is stretched and tensioned, the two feeding assemblies are combined, the impact on the glass fiber cloth in the drying process can be controlled within a certain range, and the drying efficiency is improved. The shape of the glass fiber cloth can be corrected, and deformation caused by inconsistent cooling speeds of the middle part and the edge part of the glass fiber cloth is prevented.

The invention belongs to the technical field of excavator power control, and particularly relates to an excavator constant power control method and system for improving the volume efficiency of an oil pump. The method comprises the steps that when the excavator enters a constant power mode, the current pump pressure and the current required displacement of a hydraulic oil pump under the target rotating speed of an engine are obtained, and required power is obtained through calculation; the ratio of the set power to the required power of the hydraulic oil pump serves as a first input value, and the calibrated minimum displacement of the hydraulic oil pump serves as a second input value; taking the ratio of the second input value to the first input value as an output value; calculating a final request rotating speed according to the ratio of the target rotating speed to the first output value, and adjusting the rotating speed of the engine to the calculated final request rotating speed; and the pump displacement of the hydraulic oil pump is adjusted in real time according to the set adjusting coefficient so as to adjust the actual flow of the pump. The pump displacement is improved by reducing the target rotating speed, the volume efficiency is improved by improving the pump displacement, and the purpose of reducing oil consumption is finally achieved.

The utility model provides an integrated air pump driving structure, and relates to the technical field of engine air pumps, and the integrated air pump driving structure comprises a driving assembly and an air pump assembly, and is provided with a driving crankshaft, a driving shaft, a crankshaft box, a cylinder sleeve, a moving piston and a transmission connecting rod; the problems that an existing air pump is mainly driven on an engine through a belt, a chain, a cam, a gear and the like, the design or change of the engine is large through the arrangement mode, the requirement for the transverse size space of the engine is high, an air pump driving mechanism is complex, and constraint space arrangement is limited can be solved, and the problem solving process is simple. The driving crankshaft is used for driving the driving shaft to rotate, the driving shaft drives the transmission connecting rod in the crankcase to move, the transmission connecting rod drives the moving piston to move for air pumping, and the driving shaft structure is adopted, so that the displacement of the air pump is greatly increased, the weight and the size of the air pump are effectively reduced, the mounting space of the air pump is effectively reduced, and the production cost is effectively reduced.

The utility model provides a bridge drainage line structure belongs to bridge drainage technical field. Including bridge body, the surface one side of bridge body is equipped with the water outlet, and the inboard and below of water outlet are installed with drainage stability mechanism, the drainage stability mechanism includes the water collector pipe end and the pipe clamp frame, and the upper end inboard of water collector pipe end is fixed with the embedded block. The utility model discloses through setting up drainage stability mechanism, and the both ends of water collector pipe end form integral fixed connection between water outlet and first drain pipe respectively, and the three are a whole, when water is discharged from the highest point to the downward, just can not infiltrate to the structural layer of bridge itself, and under the fixed flow guide condition of having first drain pipe, can not appear the phenomenon of leakage and splashing in the drainage process, wherein the first drain pipe and second drain pipe junction install sealing assembly and installation assembly, and the first sealing pad is embedded in the inside of the blocking frame of its connection and is installed in the middle part of the carrying frame, and the second sealing pad is fixed in the end of first drain pipe.

The invention belongs to the technical field of aeronautical manufacturing, and relates to a device for detecting the displacement of an airplane pedal and the displacement of the pedal, which mainly comprises a detection device framework, a connecting assembly, an adapter, a support sleeve, a screw rod, a shaft sleeve, a right-angle hand-cranking angle turning device, a scale and a pointer. The detection device framework comprises a main body framework, a slide rail fixing support, a scale slide block, an angle turning device fixing plate, a shaft sleeve fixing plate and a long-strip groove-shaped through hole. The connecting assembly comprises a support, a positioning assembly and a handle. The positioning assembly comprises a positioning seat, a connecting piece, a positioning rod, a positioning shaft, a spring and a positioning pin.

System for moving a retractable roof consisting of aligned movable trusses that move on two parallel guide rails by means of runners arranged on the side posts of the said trusses, and where the trusses are joined together by a tarpaulin, where the retraction system has the particularity that each runner consists of two side walls facing each other, and between these walls there are rows of grooved wheels fixed at two different heights; each guide rail comprises an upper curved surface on its upper side, and a lower curved surface on its lower side; where the runner runs along and is kept in contact with the guide rail by the wheels of the upper row being in contact with the upper curved surface of the guide rail, and by the wheels of the lower row being in contact with the lower curved surface of the guide rail.

The invention discloses metal blank machining die-casting forming equipment convenient to demould, and relates to the technical field of die-casting machines. The metal blank machining die-casting forming equipment convenient to demould comprises a fixed mould; the movable mold is located on one side of the fixed mold and can form a mold assembly with the fixed mold, the movable mold can be close to the fixed mold so that the mold assembly can be in a mold closing state, and the movable mold can be far away from the fixed mold so that the mold assembly can be in a mold opening state; the clamping mechanisms are located on the two sides of the mold assembly; and a pressure assembly. According to the metal blank machining die-casting forming equipment convenient to demould, the clamping mechanism can clamp a metal blank in the mould opening process, the metal blank can be locked on the clamping mechanism after being clamped by the clamping mechanism, at the moment, when the movable mould continuously performs the mould opening action, the metal blank does not move along with the movable mould, and the demoulding operation can be realized; therefore, the ejector rod does not need to be opened independently in the movable die, and the workpiece forming precision is guaranteed.

This invention relates to the field of structural finite element analysis technology, specifically disclosing a finite element analysis method, system, and storage medium for plate and shell elements in ship structures. The method includes: constructing a four-node plate and shell element finite element discrete model of a thin-walled ship structure; determining the block composition of the basic Mindlin plate and shell element stiffness matrix; constructing out-of-plane bending stiffness and correcting the membrane effect stiffness, out-of-plane transverse shear stiffness, and in-plane rotational stiffness respectively; combining the out-of-plane bending stiffness and the corrected membrane effect stiffness, out-of-plane transverse shear stiffness, and in-plane rotational stiffness based on the four-node plate and shell element finite element discrete model of the thin-walled ship structure; and performing finite element analysis of the plate and shell elements of the ship structure based on the corrected plate and shell element stiffness matrix. The plate and shell element finite element analysis method for ship structures provided by this invention can improve the adaptability and computational stability of four-node plate and shell elements in the modeling of complex ship structures.

The utility model relates to the technical field of biomass energy comprehensive application, and discloses a blade crushing and screening device which comprises a shell, a cutterhead assembly and a conveying assembly. The axis of the shell extends in the first direction, and the cutterhead assembly comprises a cutterhead shaft, an angle adjusting mechanism and blades. The cutterhead shaft is arranged in the shell and is collinear with the axis of the shell, a through hole penetrating in the first direction is formed in the center of the cutterhead shaft, the through hole is used for allowing a driving part driving the cutterhead shaft to rotate around the axis of the cutterhead shaft to penetrate through, and a sealing interlayer is formed between the cutterhead shaft and the driving part; the blade is arranged on the peripheral wall of the cutter head shaft, and the angle adjusting mechanism is arranged in the sealing interlayer and is correspondingly connected with the blade so as to control the blade to rotate around the axis of the blade; the conveying assembly is connected with the angle adjusting mechanism and used for providing driving force for the angle adjusting mechanism. The angles of the blades and the cutting gaps between the adjacent blades can be adjusted in real time through the angle adjusting mechanism, and real-time dynamic control over the ventilation resistance and the material powder fineness in the shell is achieved.

The utility model relates to the technical field of motorcycle parts, in particular to a four-valve cylinder head structure. Comprising an engine top shell, an engine bottom shell, a cam shaft, an air inlet convex hull, an exhaust convex hull and an air inlet and exhaust module, the cam shaft is movably arranged in the engine bottom shell, the outer wall of the cam shaft is sleeved with the air inlet convex hull and the exhaust convex hull, and the air inlet and exhaust module comprises two air inlet valves, two exhaust valves, a first valve rocker arm and a second valve rocker arm; the first valve rocker is movably connected with the engine bottom shell and located in the engine bottom shell, the second valve rocker is movably connected with the engine bottom shell, the air inlet convex hull is movably matched with the first valve rocker, the exhaust convex hull is movably matched with the second valve rocker, and the first valve rocker and the second valve rocker are each provided with two screw parts. The number of the valves of the engine cylinder head is increased, the air inflow of the cylinder head is remarkably improved, and the rotating speed, horsepower and displacement of an engine are improved.

A wave energy conversion device, comprising a housing. A water inlet cavity (25) and a water outlet cavity (26) are provided in the housing, and a one-way flow guide grille is mounted on an opening of each of the two cavities; a water turbine is mounted between the two cavities, and the upper part of the water turbine can be connected to a main shaft of a permanent magnet generator (2); the one-way flow guide grilles of the water inlet cavity (25) and the water outlet cavity (26) are arranged in a transverse V-shaped manner along an up-down direction, and the housing is provided with a water inlet and outlet (23) at a V-shaped opening; the water inlet cavity (25) and the water outlet cavity (26) are combined in an asymmetric manner, and the water inlet cavity (25) and the water outlet cavity (26) are respectively provided with a portion connected to a top portion (19) of the housing, and an air discharge opening is disposed on said portion.

The utility model belongs to the technical field of kitchen ware, and particularly relates to a stable and anti-slip cutting aid capable of being operated by one hand, which is characterized in that a cutting aid mechanism is mounted at the top end of an operating table, and a mounting plate is fixedly connected to the back of the operating table; a mounting groove is formed in one side wall of the mounting plate, the two-way threaded rod is arranged in an inner cavity of the mounting groove, the two ends of the two-way threaded rod are in threaded connection with connecting plates correspondingly, and a clamping plate is arranged on one side of each connecting plate. According to the cutting assisting device, after the cutting assisting device is placed on a cutting board, the two connecting plates can move relatively by rotating the two-way threaded rod, so that the two clamping plates move relatively until the two clamping plates are attached to the two side walls of the cutting board, clamping of the cutting board is achieved, and then the stability of the cutting assisting device in the using process is guaranteed.

The invention relates to an electric submersible pump casing oil extraction system and method for a coiled tubing built-in cable. Mainly solves the problem that the service life is short and the well opening efficiency is seriously influenced due to abrasion and poor insulativity of a cable in the pulling process of an electric submersible pump unit in a small-diameter sleeve during the existing underground operation. The device is characterized by comprising an underground electric submersible pump lifting system (100), a wellhead hanging and penetrating system (200) and a ground skid-mounted control system (300), the underground electric submersible pump lifting system (100) is connected with the wellhead suspension and crossing system (200) through a wellhead connecting flange; and the wellhead hanging and penetrating system is connected with the ground skid-mounted control system through a submersible cable. According to the oil extraction system, the submersible cable is arranged in the continuous oil pipe, casing production is adopted, the submersible cable does not make contact with well fluid, the submersible cable is prevented from being immersed in the well fluid with high gas content, high pressure and high corrosivity for a long time, the service life of the cable can be effectively prolonged, and meanwhile the repeated utilization rate of the cable is increased.

The invention relates to the technical field of tread pattern design, and discloses a tire with concave-convex grooves in tread pattern groove walls, which comprises a tread, four circumferential grooves formed in the tread and extending along the tire circumference C direction, and transverse grooves extending towards the outer side of the tire width L direction. The circumferential grooves and the transverse grooves divide the tread into a plurality of block-shaped patterns, and the block-shaped patterns sequentially comprise an inner side shoulder block, an inner side close-to-center block, a middle block, an outer side close-to-center block and an outer side shoulder block from the inner side to the outer side of the tire. According to the tire with the concave-convex grooves in the tread pattern groove wall, the transverse groove of the tread is optimally designed, the groove wall of the groove is specially designed, and design parameters such as the position and the size of the concave-convex grooves in the groove wall are reasonably configured, so that the effects that the noise, the control safety performance and the durability can reach relatively high levels, and other performances are kept optimal are achieved.

The invention relates to a heat supplementing device for a low-carbon olefin and low-carbon aromatic hydrocarbon preparation system and the low-carbon olefin and low-carbon aromatic hydrocarbon preparation system, the low-carbon olefin and low-carbon aromatic hydrocarbon preparation system comprises a catalyst regenerator, and the heat supplementing device comprises a wind source, a heat supplementing device and a heat supplementing device, an inlet of the electric heater is communicated with the air source, and an outlet of the electric heater is used for being communicated with a main air inlet of a catalyst regenerator; the temperature sensor is arranged between the outlet of the electric heater and the main air inlet; and the controller is in communication connection with the temperature sensor and the electric heater, so that the controller adjusts the working power of the electric heater according to a temperature signal sent by the temperature sensor. The heat supplementing device provided by the invention can supplement insufficient heat generated by coke combustion in the reaction process of the low-carbon olefin and low-carbon aromatic hydrocarbon preparation system, and does not influence the catalyst.

The invention belongs to the field of oil and gas exploitation, and discloses an annulus pressure-bearing tool and method for high-pressure-grade reverse circulation drilling and workover treatment, and the annulus pressure-bearing tool comprises a sealing assembly, a rotating assembly, a connecting piece and a fastening device; a traditional static sealing mode is changed into a mode that the sealing assembly and the rotating assembly are limited on the kelly bar body and move up and down along with the kelly bar, a kelly bar connector does not need to pass through the position of the sealing assembly all the time, abrasion of a sealing rubber core is reduced, the problem that the sealing rubber core is frequently damaged, punctured and leaked can be solved, and the service life of the sealing rubber core is prolonged. The active sealing mode can actively adjust the excitation pressure according to the sealing working pressure requirement and can supplement the pressure at any time, so that the sealing is more reliable; due to the arrangement of the rotating assembly, the pressure bearing capacity of the tool is further improved, the reliable annular dynamic sealing capacity under the higher pressure during reverse circulation drilling and grinding is guaranteed, the higher upward return flow speed of drilling and workover fluid in a drilling tool water hole and the higher drilling cutting carrying efficiency are provided, and the drilling and grinding time efficiency is improved.

The utility model belongs to the technical field of waterproof thermal insulation material processing, and particularly relates to a laser cutting device for waterproof thermal insulation material processing, which comprises an adjusting mechanism, and a cutting component is slidably connected to a track on the outer side of the adjusting mechanism. In the laser cutting process of the waterproof heat preservation material, when the waterproof heat preservation material is fixed, the waterproof heat preservation material is mostly of a low-density porous structure, a conventional clamp is prone to causing surface pressure loss or displacement, cutting precision deviation is caused, and an adsorption mechanism below an installation workbench is connected with a vacuum pump through an electromagnetic valve set. The adsorption pipeline generates adsorption force to the array type vacuum adsorption holes, meanwhile, the liftable rubber pressing strip arranged on the edge of the workbench is driven by the telescopic air cylinder and matched with the adsorption mechanism to achieve material edge fixing, vacuum adsorption and elastic edge pressing combined tool, the problem that low-density materials are prone to displacement is solved, and the positioning precision is improved.

The fracturing string capable of reducing the nitrogen foam fracturing friction resistance comprises a casing pipe, a safety connector, a hydraulic anchor and a packer are arranged in the casing pipe, the safety connector, the hydraulic anchor and the packer are sequentially connected through a tool string, the end, away from the hydraulic anchor, of the packer is connected with a horn mouth through the tool string, and the end, away from the hydraulic anchor, of the packer is connected with the horn mouth through the tool string. A sleeve head is arranged at the end opening, close to the safety connector, of the sleeve, and the other end of the tool string penetrates through the sleeve head. The invention further discloses a fracturing method, and the fracturing tubular column capable of reducing the fracturing friction resistance of the nitrogen foam and the fracturing method of the fracturing tubular column solve the problems that in the fracturing process in the prior art, the friction resistance is large, and the pressure borne by a casing head is insufficient.

The application provides a photonic spin Hall effect regulation method based on a polar medium core-shell structure, comprising the following steps: constructing a nanoparticle model based on core parameters of a spherical core-shell structure of a silicon dielectric core-silicon carbide polar medium shell; constructing an optical scattering transfer function based on the core parameters and the Mie theory; calculating photonic spin Hall displacement amplitudes of a short-wave side region and a long-wave side region of a full anti-band of a silicon carbide material in a mid-infrared region based on the optical scattering transfer function; regulating the photonic spin Hall displacement amplitudes and the center positions of the short-wave side region and the long-wave side region by adjusting a core-shell ratio; and converting the spherical core-shell structure into an ellipsoidal core-shell structure by adjusting the morphology of the core-shell structure, so as to enhance the photonic spin Hall displacement amplitude and the scattering intensity of the short-wave side region. The application can solve the problems that the photonic spin Hall displacement is difficult to appear in the mid-infrared waveband, the scattering intensity is low, the adjustability is poor, and the application is difficult to be large-scale.

The utility model relates to pile foundation drilling technical field discloses a pile foundation drilling device for hydraulic engineering, including drill head and control room, the drill head top rotatory connection has the drill rod, the drill rod one side is provided with the track, control room one side fixedly connected with the engine, the engine bottom rotatory connection has the track -laying, the track -laying both sides rotatory connection has a plurality of telescopic legs, telescopic leg bottom is provided with fixed assembly, the fixed assembly includes the foot, the foot is located telescopic leg bottom, the foot top rotatory connection has the universal shaft, the universal shaft outer wall rotatory connection has the upper bar, the upper bar top is provided with the lifting assembly. In the utility model, through the electric box drive screw rod rotation makes the foot and ground contact, the universal shaft makes the foot adapt to the ground of different angles, reaches the purpose of fixed equipment, makes equipment can adapt to different topography, solved the problem that equipment is easy to shift or dump under the complex topography.

The invention provides a large slip form construction platform lifting monitoring method and a lifting device, and belongs to the technical field of building construction. According to the technical scheme, the large slip form construction platform lifting monitoring method is characterized in that an electric servo jack, a slip form lifting main controller and a distributed unit controller are arranged on a slip form construction platform, and synchronous lifting of the slip form construction platform is achieved in combination with a supporting rod, a tilt angle sensor and a vertical height monitoring sensor. In the lifting process, lifting displacement and lifting force are collected, displacement and stress closed-loop control is carried out, and meanwhile, whether the next stage of lifting construction is started or not is judged by combining posture monitoring, synchronous deviation correction and concrete strength monitoring data. The system has the beneficial effects that the electric servo jack, the slip form lifting main controller, the distributed unit controller and the like are arranged on the slip form construction platform, so that synchronous control, stress balance monitoring, posture monitoring and real-time deviation correction early warning in the lifting process of the slip form construction platform are achieved.

The invention relates to the field of tertiary oil recovery of oil fields, in particular to a middle-phase microemulsion as well as an oil displacement method and application thereof. The middle-phase microemulsion is prepared from the following components in parts by weight: 4 to 8 parts of alkylolamide, 1 to 5 parts of alkyl polyoxypropylene ether sulfate and 1 to 4.5 parts of alkylphenol polyoxyethylene ether sulfate. The oil displacement method comprises the following steps: (1) injecting a polymer oil displacement system into a reservoir of a target oil reservoir; (2) injecting a middle-phase microemulsion oil displacement system, wherein the middle-phase microemulsion oil displacement system comprises the middle-phase microemulsion; optionally, (3) injecting a foam flooding system; optionally, (4) injecting a PPG oil displacement system; and (5) injecting a polymer oil displacement system. By adopting the middle-phase microemulsion oil displacement system, the sweep efficiency and the oil displacement efficiency can be greatly improved, and huge application potential is shown in the field of improving the recovery efficiency.

The utility model provides a drainage support, and relates to the field of medical instruments. The drainage support comprises a tubular support and a limiting assembly. The limiting assembly comprises at least two limiting protrusions, and the multiple limiting protrusions are arranged in the circumferential direction of the tubular support at intervals. Each limiting protrusion is connected with the outer wall of the tubular support and forms an included angle with the axis of the tubular support. The inclination directions of the multiple limiting protrusions are the same. According to the drainage support, the technical problem that in the prior art, a plastic support is prone to displacement is solved.

The invention relates to the field of drip irrigation devices for corn planting, in particular to a drip irrigation device for corn planting and a using method.The drip irrigation device comprises a liquid storage cylinder, a Y-shaped liquid conveying pipe is fixedly connected to the bottom of the liquid storage cylinder, filter boxes are symmetrically and fixedly connected to the bottom of the Y-shaped liquid conveying pipe, and the tops of the filter boxes are fixedly connected with the bottom of the liquid storage cylinder; the bottom of the filter box is fixedly connected with a drainage elbow, four connecting sleeves are arranged at the end, away from the filter box, of the drainage elbow at equal intervals, and a liquid conveying hose is fixedly connected between every two adjacent connecting sleeves. The drip irrigation device for corn planting is composed of an adjusting mechanism and a liquid dripping mechanism. Through cooperative use of the connecting sleeve, the adjusting mechanism, the liquid dropping mechanism and other components, the liquid dropping head close to the liquid discharging elbow pipe can discharge liquid at a high flow speed and reduce the liquid discharging amount, and the liquid dropping head far away from the liquid discharging elbow pipe can discharge liquid at a low flow speed and improve the liquid discharging amount, so that the uniformity of the total amount of liquid discharged by the liquid dropping heads at different positions is ensured.

The invention discloses a steel structure plate butt welding device and a working method thereof. The steel structure plate butt welding device comprises a bottom plate, a top plate and lateral supports on the two sides. A clamping assembly used for clamping a steel structure plate is arranged on the lateral support, the welding assembly comprises a welding gun, a motor, a third lead screw, a sliding block and an electric push rod, and front-back movement and height adjustment of the welding gun are achieved; the driving assembly comprises a gear, a rotating rod, a rotating disc and a rack, and vertical displacement of the clamping assembly is achieved through gear and rack transmission. A positioning device is further arranged on the rack, comprises a second lead screw and an internal thread knob and is used for finely adjusting and locking the position of the clamping assembly. Coarse adjustment is achieved through the driving assembly, fine adjustment is achieved through the positioning device, the tops of the two plates with different thicknesses are adjusted to the same horizontal plane, it is ensured that welding faces are aligned, the problems that in the prior art, the welding faces are uneven and the welding seam quality is poor due to the plate thickness difference are solved, and the beneficial effects of being convenient and fast to operate, high in welding precision and high in adaptability are achieved.

The utility model relates to a decoration panel friction detection jig which comprises a material placing table, a moving rod, a material grinding assembly and a material clamping assembly, and the material grinding assembly is connected with the moving rod; the material grinding assembly comprises a connecting frame, a connecting plate, a material grinding rod, a material grinding head and a weight increasing ring. The material clamping assembly comprises a pressing plate, a material pressing rod, a balance rod and a first fastener. The material clamping device has the advantages that the fastening holes in different positions are selected to position the material clamping assembly, the material clamping requirements of panels of different sizes and shapes are met, and especially for special-shaped panels, the position of the material clamping assembly can be flexibly changed; the weight increasing rings are added or reduced on the bearing plate to quickly adjust the pressure of the grinding head on the panel so as to adapt to friction force tests of different degrees on the panel; and by arranging the material pressing rod and the balance rod, the positioning capacity of the panel is further enhanced, and the problem that the panel is prone to displacement during friction due to the fact that one end of the pressing plate is suspended is solved.