23results about How to "Avoid voids" patented technology

The utility model discloses a fixing fixture for an anti-floating anchor rod, and relates to the technical field of mechanical engineering, a second through column is arranged outside the anchor rod, a stable holding mechanism is assembled in the second through column, a power assembly is assembled in the second through column, the stable holding mechanism comprises a plurality of first connecting rods, and the first connecting rods are connected with the first connecting rods. The side end of each first connecting rod is fixedly connected with a second connecting rod, the side end of each second connecting rod is fixedly connected with a hinge block, the side end of the second through column is fixedly connected with a fourth through column, and the side end of each first column block is arranged at the side end of the fourth through column. According to the mechanism, the mechanical transmission principle is adopted, a traditional fixing clamp for the anti-floating anchor rod is improved, the stability of the traditional fixing clamp for the anti-floating anchor rod for fixing the anti-floating anchor rod is improved through an additional structure, when the hole diameter is too large, the anchor rod is inserted, the phenomenon of cavities or non-uniformity in the grouting process can be prevented, and the grouting quality and the anchoring effect are improved.

A composite thawing method for frozen soil in tunnel boring machines (TBMs) includes the following steps: S1, driving sheet piles into the frozen soil location to break up the frozen soil; S2, extracting the sheet piles after construction; S3, applying high-pressure jet grouting with salt-cement slurry to the frozen soil location, using the high-pressure jet grouting to cut and thaw the frozen soil. This invention employs a composite thawing method combining sheet pile breaking and high-pressure jet grouting with salt-cement slurry. During construction, the frozen soil is first mechanically broken up using sheet piles, and then cut and thawed again using salt-cement slurry. Compared to traditional natural thawing or mud circulation thawing methods, this method effectively improves thawing efficiency, shortens the construction period, avoids the problem of soil voids in front of the cutterhead caused by mud circulation thawing methods, improves safety, and has the advantage of low construction cost.

The application discloses a method for generating a stable clamping pose of a double-arm clamping jaw based on a point cloud, and relates to the technical field of robots, and comprises the following steps: obtaining an image of a target object captured by a camera and depth information of a corresponding frame, and inputting the image into a stereo depth estimation model to obtain corresponding estimated depth information. The application solves the problem of depth missing of the target object in a shielding and complex structure area by fusing the depth information of an RGBD camera and the stereo depth estimation result, improves the completeness of point cloud data, adopts a depth fusion mechanism determined by difference to take into account the accuracy of model estimation and camera measurement, improves the quality of point cloud, generates a jaw pose by combining force closure and collision avoidance constraints to ensure the stability and safety of grabbing, reduces the complexity of the model by using point cloud features with rotation and translation invariance, and improves the recognition ability of a grabbing area and the success rate of grabbing by the interaction between target object features and jaw features.

The utility model relates to silicone sealant technical field especially, it relates to a base material production system used in the preparation of silicone sealant, including dehydration kettle and modification reation kettle, and the outlet of dehydration kettle and the outlet of modification reation kettle are connected with the reaction unit respectively, the top and bottom of reaction unit are equipped with inlet and outlet respectively, and the top of reaction unit is equipped with vacuum port, and the vacuum port is connected with vacuum buffer device, the outside of reaction unit is equipped with first heating part, and the inside of reaction unit is equipped with second heating part and pivot, and one end of pivot is connected with motor, and first dispersion part, second dispersion part and third dispersion part are equipped on pivot. The production system is reasonable in design, can guarantee that material mixes evenly, contacts reaction fully, also discharges the moisture in material, reduces and avoids the generation of air bubble when stirring, guarantees the quality of base material.

This utility model relates to the field of door lock technology, specifically a positioning and rotating handle device. It includes a mounting plate with a positioning ring installed in the center. A handle component is rotatably connected to the outside of the positioning ring. The handle component includes a rotating part, the front end of which is fitted onto the positioning ring. A spring is installed inside the rotating part, and a steel ball is attached to the end of the spring. The positioning ring has several equally spaced positioning grooves arranged in a ring on the side near the handle component. When the handle component rotates, the steel ball engages with each positioning groove in sequence, increasing rotational stability and feel. In this positioning and rotating handle device, the spring pushes the steel ball to engage with the positioning grooves on the positioning ring, achieving precise positioning of the handle component during rotation. Each rotation, with the steel ball embedding into the positioning groove, provides clear tactile feedback to the user, preventing any play or jamming during operation. It is particularly suitable for applications requiring high operational precision, improving stability and reliability.

This application discloses a method for manufacturing a window and an electronic device including the window. The method for manufacturing a window includes: placing a substrate in a guide film that houses the substrate and is provided with an opening defined to extend through the guide film and overlap with a portion of the substrate in a plan view; providing a first solution comprising light-blocking particles and a polymer resin to an edge portion of an interior space of the guide film, wherein the interior space is divided into a central portion overlapping the opening in a plan view and an edge portion located outside the central portion; providing a second solution comprising the polymer resin to the central portion; placing a magnet to overlap with the edge portion in a plan view, such that the light-blocking particles are moved by means of the magnet; and using ultraviolet light to cure the light-blocking particles and the polymer resin to form a black matrix and a coating.

The utility model relates to a steel bending machine for construction engineering, the steel bending machine for construction engineering is through being provided with transmission link and being connected with the bending bar in its end part, makes it in the process of using, one side can realize the effect that the steel is limited, the other side realizes the bending of two sizes of steel simultaneously through the bending bar, avoids the virtual position of one when the steel of two sizes is bent simultaneously between transmission link and support link, sets up the worm -like revolving stage that the inside diameter is increasing gradually from inside to outside in succession through the bending bar, and the middle part of revolving stage is equipped with the installation slot that facilitates pipe material placement. Make it in the process of using, can realize the effect that the end of the plate is bent in multi -angle, to this to guarantee its applicability in the process of using.

The invention provides a quantitative material adding device and system. The quantitative material adding device comprises a stock bin, wherein a discharging barrel is arranged at the bottom end of the stock bin; the rotating shaft is vertically and rotatably arranged in the stock bin; the paddle assembly is detachably arranged on the rotating shaft, the paddle assembly comprises at least one dispersing paddle and at least one gathering paddle, the dispersing paddle is used for dispersing materials in the stock bin, and the gathering paddle is used for gathering the materials in the stock bin; the feeding screw rod is detachably arranged at the bottom end of the rotating shaft, and the bottom end of the feeding screw rod extends into the discharging barrel; and the driving mechanism is in transmission connection with the rotating shaft, and the driving mechanism is used for driving the paddle assembly and the feeding screw rod to rotate so as to push the materials into the discharging barrel to be discharged. Through the synergistic effect of the scattering blades and the polymerization blades, the bridging and caking phenomena generated by accumulation of materials at the bottom of the stock bin are broken, the device is prevented from being blocked, continuous and uniform discharging is achieved, and the material adding efficiency is improved.

The application provides a high-temperature unstable permafrost pre-melting and vacuum preloading reinforcement system and a reinforcement method, and the system comprises a pre-melting and thawing device, a sealing system and a steam generator, and the sealing system and the steam generator are connected with the pre-melting and thawing device. The pre-melting and thawing device is matched with the steam generator, the high-temperature unstable permafrost is pre-melted by using steam convection and heat conduction, the pre-melting and thawing efficiency is improved, the system has the characteristics of green environmental protection, and has no adverse effect on subsequent engineering construction. The sealing system is matched with the pre-melting and thawing device to realize the drainage consolidation of the high-temperature unstable permafrost foundation, the thawing pipe and the soil body are prevented from being empty, the pre-melting and thawing efficiency is ensured, the uneven subsidence problem caused by repeated freezing and thawing cycles is eliminated, the bad properties of the frozen soil are changed, and the stability of the foundation is effectively improved.

This invention discloses a production apparatus for frozen duck blood. The invention relates to the field of duck blood production technology and includes two base plates. Connecting plates are fixedly connected to the top sidewalls of both base plates. A conveying assembly for transporting packaged duck blood is rotatably connected to the inner wall of each connecting plate. A processing assembly for vacuum degassing and packaging the duck blood is located at the upper end of the conveying assembly. For bagged duck blood, this invention applies uniform pressure through a forming plate, ensuring the duck blood evenly fills the packaging bag, preventing sedimentation due to gravity, and ensuring uniform distribution of the duck blood after freezing, thus improving the product's appearance regularity. For boxed duck blood, an adjustable mounting block and a first clamping plate achieve precise fixing of boxed duck blood of different sizes, preventing clamping deviation and crushing damage, ensuring packaging integrity, and thus ensuring the quality stability of the frozen boxed duck blood.

This invention relates to the field of building engineering technology, specifically to a non-vibration pressure grouting construction method for tall steel-concrete composite columns. S1: Grouting holes are opened at the bottom of the steel-concrete column, and vent holes are opened at the top. S2: A grouting connection structure is installed, and a grouting connection pipe is welded at an acute angle to the column axis and extends into the column. A check valve is installed on the pipe, and reinforcing ribs are welded between the pipe and the column. S3: Pressure grouting is performed from the compacted concrete until it overflows from the vent holes. S4: After the concrete has settled naturally, secondary grouting is performed until it overflows from the vent holes again. S5: The check valve is closed to prevent backflow. S6: The grouting holes are sealed after the concrete reaches 70% of its design strength. This invention, through a grouting connection structure with a check valve and reinforcing ribs, combined with a secondary grouting process, systematically solves the problems of concrete backflow, insufficient compaction at the top of the column, and easy damage to the connection structure during the initial jacking process of ultra-high-rise buildings. It significantly improves construction quality, safety, and efficiency, and is applicable to the construction of tall steel-concrete composite columns in industrial and civil buildings.

The application provides an LED chip and a preparation method thereof. An insulating reflection layer is arranged on an epitaxial stack surface, and the insulating reflection layer has through holes corresponding to exposed parts of a groove and a mesa respectively; meanwhile, metal filling layers are arranged in the through holes respectively; a first electrode is laminated on a surface of the metal filling layer corresponding to the exposed part of the groove through the through hole, and extends upward to a surface of the insulating reflection layer; and a second electrode is laminated on a surface of the metal filling layer corresponding to the exposed part of the mesa through the through hole, and extends upward to the surface of the insulating reflection layer. Thus, the filling of the metal filling layer can realize the filling of the opening of the insulating reflection layer, reduce the surface height difference caused by the opening of the insulating reflection layer and the cavity caused thereby, and further solve the technical problems of stress mismatch, heat accumulation and uneven current distribution caused thereby.

The application provides a tunnel structure and a tunnel secondary lining cavity and thickness deficiency repairing construction method, relates to the technical field of tunnel construction methods, and when repairing the secondary lining cavity, exhaust holes and grouting holes are drilled on the secondary lining at the cavity; an exhaust pipe is inserted into the exhaust hole, and a grouting pipe is inserted into the grouting hole; an external grouting device pours concrete into the cavity through the grouting pipe to form a first filling part; the exhaust hole on the secondary lining is filled with concrete to form a second filling part, and the grouting hole is filled with concrete to form a third filling part; when repairing the secondary lining thickness deficiency, the concrete in the secondary lining thickness deficiency area is removed; a containing space is formed between the waterproof board and the secondary lining, a reinforcing assembly is implanted in the containing space, and concrete is poured into the containing space and is used for lining. The application alleviates the technical problems of the partial secondary lining back cavity and the secondary lining concrete thickness deficiency in the existing technology of the tunnel in the surrounding rock of class III and class IV during the construction process.

The utility model belongs to the technical field of rubber water-stop belts, and discloses a middle-buried anti-cracking rubber water-stop belt which comprises a water-stop belt body, and four hook portions are arranged at the positions where the water-stop belt body is combined with the edges of a concrete body. And the bristle parts are integrally formed on the surface of the water stop belt main body. According to the rubber waterstop, the burr parts are arranged at the combining edges of the concrete body, so that the contact condition of broken stones in the concrete material and the waterstop main body in the pouring process is reduced, and the cracking resistance of the rubber waterstop is remarkably improved.

The application relates to the technical field of PCB processing, in particular to a PCB resin hole plugging processing technology, which comprises the following steps: S1, completely cleaning a PCB to be subjected to hole plugging by using a chemical cleaning agent; S2, selecting low-viscosity resin according to the application requirement of the PCB; S3, performing one-time resin filling, and performing high-frequency vibration on the via hole of the PCB during the filling process; S4, curing the low-viscosity resin plugged into the via hole of the PCB; and S5, performing two-time resin filling. The two-time resin hole plugging mode can prevent the problems of holes in the resin-plugged holes being hollow and having bubbles due to the fact that the through holes are deep, the viscosity is large, the resin flowability is influenced, and the resin cannot sufficiently flow and fill the PCB via hole, and can prevent the resin from overflowing when the PCB resin hole plugging is performed on a relatively thin PCB.

The utility model provides a pouring device for manufacturing a fiber directional concrete ditch cover plate, which comprises a hopper, a plurality of fiber directional concrete ditch cover plates, a plurality of fiber directional concrete ditch cover plates, a plurality of fiber directional concrete ditch cover plates, a plurality of fiber directional concrete ditch cover plates and a plurality of fiber directional concrete ditch cover plates, the outlet is formed in the tail end of the discharging part and is used for introducing the concrete into a mold; the bottom plate is of a flat plate structure and is used as a mounting platform of the device; the transverse guide rails are arranged on two sides of the bottom plate in parallel; the longitudinal guide rail is arranged above the device, is arranged in the front-back direction and is higher than the transverse guide rail; the plurality of sliding blocks comprise a longitudinal sliding block for connecting the hopper with the longitudinal guide rail and a transverse sliding block for connecting the longitudinal guide rail with the transverse guide rail; and the mold is arranged above the bottom plate between the transverse guide rails and is used for molding the ditch cover plate. Compared with traditional disorderly distributed fibers, the device enables the fibers to fully play a role in the effective stress direction through flow induction, so that the fibers in the concrete cover plate are directionally arranged, and the mechanical contribution of the fibers can be maximized.

This invention relates to a fiber-reinforced wood-plastic composite product and its preparation method, belonging to the field of polymer composite materials technology. The preparation method of the fiber-reinforced wood-plastic composite product of this invention involves reacting maleic anhydride-grafted polyethylene with 6,6-dimethylspiro[bicyclo[3.1.1]hept-2,2'-epoxyethylene] to obtain hydroxyl-grafted polyethylene. Then, the hydroxyl-grafted polyethylene is subjected to a substitution reaction with 4-bromopyridine-2,6-dicarboxaldehyde to obtain aldehyde-grafted polyethylene. Finally, the aldehyde-grafted polyethylene and straw powder grafted with an amino-polytetrahydrofuran silane coupling agent, and nano-mica sheets grafted with an amino-polyethylene glycol silane coupling agent, are subjected to a Schiff base reaction to obtain a polyethylene composite grafted with straw powder and nano-mica sheets. Finally, the composite is molded with polyethylene to obtain the final product.

The utility model discloses an efficient casual shoe overlock device which comprises an operation table, an overlock assembly is installed on the operation table, a discharging groove is formed in the front end of the operation table, the rear end of an installation frame is designed in an inclined mode, and a collecting frame is installed at the bottom of the rear end of the installation frame. According to the shoe sole overlocking device, overlocked shoe soles are conveyed through the conveying belt by arranging the discharging groove, the rear end of the arranged mounting frame is designed in an inclined mode, the conveyed shoe soles can be collected in the collecting frame, and therefore the stacked shoe soles do not need to be flattened or tidied manually in the overlocking process, and in addition, a photoelectric sensor is arranged at an inlet of the conveying belt, so that the overlocking effect is improved. The number of overlocked shoe soles can be counted and displayed through an LED screen, the accumulated shoe soles are naturally spread under the action of gravity through periodic movement of a shaking structure, local accumulation or cavities of a collecting frame are avoided, the number of collected shoe soles is increased, and the shoe soles are prevented from being accumulated and falling out.

A compound for an optical element adhesive is represented by formula [1]. In formula [1], X1 represents a structure selected from formulae [1-a] to [1-g]. TA represents a hydrogen atom or a benzene ring, and * represents a bond. X2 represents a linear alkylene group having 2-14 carbon atoms, and the alkylene group may be substituted by at least one of (i) and (ii). (i) any-CH2-, which is not adjacent to X1 or X3, in the alkylene group is substituted by-O-,-CO-,-COO-,-OCO-,-CONH-,-NHCO-,-NH-, a benzene ring or a cyclohexane ring; (ii) Any-CH2-in the alkylene group is substituted by-CH (CH3)-. And X3 represents-CO <->,-COO <->,-OCO <->,-CONH <->,-NHCO <-> or-NH <->. And X4 represents a branched alkyl group having 12 to 40 carbon atoms.

This invention relates to the field of 3D modeling technology and discloses a modeling system that integrates laser point clouds and 2D vectors. The system includes a data acquisition module, a data fusion module, a model generation module, a visualization module, an optimization and adjustment module, and a user feedback module. The data acquisition module acquires laser point cloud and 2D vector data and performs standardized preprocessing. Based on the data fusion module, the point cloud and vector data are registered, transformed, and weighted to generate high-precision fused data. The model generation module performs 3D reconstruction, detail enhancement, and quality verification, outputting the final model. The visualization module renders the scene and supports interactive operations. The optimization and adjustment module evaluates model efficiency and dynamically optimizes parameters. The user feedback module analyzes requirements and adaptively adjusts system settings. This invention improves the accuracy and reliability of 3D modeling, enhances the robustness and consistency of the modeling process, and improves the overall output quality and engineering applicability of the system.

A rotary tee joint comprises a shell and a core. The shell is provided with a circular hole at the top, and the inner wall of the circular hole is provided with a plurality of annular grooves arranged at intervals from top to bottom. The shell is provided with a pipe joint corresponding to each annular groove. The core is a cylindrical structure, and is rotatably arranged in the circular hole. The lateral surface of the core is provided with a horizontal hole corresponding to the annular groove from top to bottom. The top of the core is provided with a vertical hole corresponding to the horizontal hole. The outer wall of the core and the upper and lower sides of the annular groove are provided with sealing structures. The pipe joint and the vertical hole are used for input and output of oil respectively. The scheme can not only ensure the quality of fuel transportation, but also effectively reduce the manual operation content and improve the stability of oil transportation.

The invention belongs to the technical field of medical first-aid equipment, and discloses an automatic cardio-pulmonary resuscitation device and method.Intelligent pressing control is achieved by integrating an outer sleeve, a driving assembly, a transmission assembly, a pressing assembly, a monitoring unit and a controller; the controller controls the driving assembly to drive the pressing assembly to move downwards according to the depth and dynamically adjusts the output torque of the driving assembly based on the estimated value of the contact force or the load torque, so that the contact force is stabilized in a preset near-zero force window, namely, the lower limit ensures that contact is not disengaged, and the upper limit limits the residual compression force. By adopting the device, the contradiction of the traditional device is effectively solved, the rebound resistance is eliminated to realize near-zero residual force, the smooth backflow of venous blood is ensured, meanwhile, the separation and re-collision of the pressing head and the chest wall are avoided, the rib fracture risk is reduced, and the equipment stability and the cardio-pulmonary resuscitation effect are improved.

The utility model provides an assembly type axis and eccentricity reciprocating tension-compression test device suitable for structural members, and belongs to the technical field of building structures. The problem that an existing test device can only achieve monotonous compression or monotonous tension working conditions and cannot achieve reciprocating tension-compression test loading is solved. The device mainly comprises a loading equipment connecting part, a test component connecting part and a test component, so that the problems that the end part of a structural component is easy to damage in advance during reciprocating pull-press loading, pull-press load transmission is insufficient and the like are effectively solved, and effective transmission and conversion of the pull-press load in a metal pipe-concrete combined component are ensured; the position of the pulling-pressing rotating shaft is adjusted through the eccentricity adjusting shaft. According to the utility model, the tension-compression reciprocating load with any eccentricity can be applied to the structural member, the assembly type mechanical connection is adopted, the assembly operation of the test device is convenient, the rapid installation and rapid replacement of the test member and the loading device can be realized, and the extra workload in the test process is reduced.