21results about How to "Control flatness" patented technology

The invention discloses a concrete floor thickness measuring device and method.The concrete floor thickness measuring device comprises a steel bar rod body and a pointed-end rod, the pointed-end rod is arranged at the bottom of the steel bar rod body, a sliding groove is formed in the steel bar rod body, a sliding block is embedded in the sliding groove, the side face of the sliding block is connected with an iron sheet floor, and the top of the iron sheet floor is connected with a ring body; an arc-shaped groove is formed in the steel bar rod body, and the threaded rod penetrates through the ring body and the arc-shaped groove. According to the concrete floor thickness measuring device and method, an iron sheet floor is installed outside a steel bar rod body, firstly, a nut outside a threaded rod needs to be screwed reversely according to the pouring thickness, after the iron sheet floor at the bottom of a ring body is adjusted to the proper height, a worker screws the nut outside the threaded rod again, and the thickness of the threaded rod is measured. In this way, the surface flatness of the concrete floor slab can be effectively controlled, the thickness of the floor slab and the thickness of the steel bar protective layer can be determined, and quality control is high during use.

This utility model discloses a cushion punching device, including a processing table. A placement plate is fixedly installed in the middle of the processing table. Clamping frames are symmetrically slidably installed on the upper surface of the processing table. The two clamping frames can move back to back and towards each other. A rotating shaft is symmetrically rotatably installed in the middle of the clamping frames. A car cushion is placed on the placement plate, and the two ends of the car cushion are clamped between two clamping rollers on the two rotating shafts. Then, the two clamping frames are driven to move in opposite directions to straighten the car cushion and control the vertical flatness of the car cushion. During the movement of the clamping frames, the two clamping rollers on the rotating shaft move in opposite directions on the rotating shaft. Since the car cushion is clamped and fixed between the two clamping rollers, the movement of the clamping rollers will straighten the car cushion, keep the surface of the car cushion smooth, and prevent the car cushion from wrinkling. Then, the laser punching component is controlled to move along the X and Y axes to punch holes in the entire car cushion.

The utility model belongs to the technical field of lattice decoration, and particularly relates to a joggling connection assembly and a wood-like lattice decoration structure, and the joggling connection assembly comprises at least one cross-shaped corner connector and a plurality of splicing units; wherein the splicing units are movably connected to the cross-shaped corner connector in a sleeving mode, and the adjacent splicing units are connected through the cross-shaped corner connector; each splicing unit is suitable for moving on the corresponding cross-shaped corner connector, so that each cross-shaped corner connector and each splicing unit form a wood-like lattice decoration structure; the splicing units are connected to the cross-shaped corner connector in a sleeved mode, the splicing units are arranged in a sleeved mode, the flatness of the lattice can be controlled, the spot welding difficulty is reduced, meanwhile, the installation angle can be finely adjusted, the rapid positioning and adjusting functions are achieved, and the requirements for reducing cost and improving installation efficiency are met.

The invention discloses a cement stirring and spreading device for road and bridge maintenance, and relates to the technical field of cement stirring and spreading, the cement stirring and spreading device comprises a fixed block, the end of the top side of the fixed block is fixedly connected with a hydraulic cylinder, the bottom of the fixed block is rotatably connected with a fixed seat, the bottom of the fixed seat is fixedly connected with a flat plate, and the inner wall of an opening of the fixed block is fixedly connected with a bent plate. Protruding blocks are fixedly connected to the outer sides, close to the bent plates, of the fixing bases, and clamping blocks are fixedly connected to the inner walls, close to the fixing bases, of the bent plates. According to the cement stirring and spreading device for road and bridge maintenance, through mutual meshing of the convex blocks and the clamping blocks, a flat plate can be fixed to a specific position and angle in the working process, so that the flatness of a road surface is guaranteed, the construction quality of the road is improved, the overall quality of the road is improved, the service life of the road is prolonged, and the flat plate is prevented from rotating during working; and when the pavement is paved, the pressure applied to the pavement is not uniform, so that the paved pavement is uneven.

The application provides a lens set, an optical system and an electronic device. The lens set comprises a first lens set, a second lens set and a third lens set, the first lens set comprises a first lens to a fifth lens, the second lens set comprises a sixth lens to a tenth lens, and the third lens set comprises an eleventh lens to a fifteenth lens; 3.31≤f12 / (CT11+CT12)≤5.40; -3.70<f14 / (CT13+CT14)<-2.30; 4.05<FG3 / CT15<8.75; f12 is an effective focal length of the twelfth lens, CT11, CT12, CT13, CT14 and CT15 are central thicknesses of the eleventh lens to the fifteenth lens respectively, f14 is an effective focal length of the fourteenth lens, and FG3 is a combined focal length of the third lens set. The lens set can achieve a comprehensive balance in high image quality, compact structure and environmental adaptability in a full field of view.

The utility model discloses a kind of vertical perfusion formworks of arc component, belong to concrete pouring mould technical field, including arc inner mould, arc outer mould, end mould, arc bottom die, travelling mechanism and positioning mechanism;The arc inner mould, arc outer mould, arc bottom die and end mould are matched into mould and are poured;The end mould can be rotatably connected in arc outer mould both sides;The arc bottom die is fixedly connected in arc outer mould bottom;The travelling mechanism is used to drive arc inner mould and arc outer mould into mould and stripping;The positioning mechanism is used for accurate positioning when arc inner mould and arc outer mould into mould.The utility model of a kind of vertical perfusion formworks of arc component, can effectively solve the pouring mould platform of prior art is flat mould production, and the component poured out by it is not good control because of the large area of upper surface, lack of vertical perfusion formwork suitable for arc segment and other problems.

The structure of preventing oil short circuit of terminal block includes a terminal block and a plurality of terminal; the terminal block has a bottom surface and a wiring surface; the terminal extends one end on the wiring surface to form a wiring part which can combine the wire; the other end of the terminal extends on the bottom surface to form a pin part; the bottom surface of the terminal block is concave between the pin parts to form a flow channel; the pin part is concave to form a surrounding part around the pin part; the surrounding part is convex compared with the concave part and the flow channel; the surrounding part can be inserted between the terminal block and the inserted surface (such as circuit board) to form a surrounding mechanism to prevent the dust, impurities and oil in the flowing air from entering the concave part; the flowing air is guided to the flow channel to prevent the accumulation of the oil and impurities.

This invention provides a pump housing comprising a first housing, a second housing, and an assembly. The second housing is connected to the first housing to form a receiving cavity capable of accommodating an impeller. At least one of the first and second housings has a groove with an opening facing the receiving cavity. The groove has a first side annular surface. The assembly includes a connected mounting surface and a second side annular surface. The assembly is accommodated in the groove, with the mounting surface facing the surface of the impeller housed within the receiving cavity, and the second side annular surface contacting the first side annular surface. The pump housing provided by this invention, by additionally providing the assembly to be installed in at least one of the first and second housings, allows for separate processing of the first housing, the second housing, and the assembly. This enables control over the flatness of the mounting surface, providing a basis for significant improvement in the flatness of the mounting surface and preventing thrombosis while improving the overall operational accuracy of the ventricular assist device. This invention also provides a pump body and a ventricular assist device.

An air grid conversion device of a photovoltaic glass tempering furnace comprises a medium-pressure fan and a high-pressure fan, an air outlet of the medium-pressure fan is connected with an air inlet of a first air supply pipeline, an air outlet of the first air supply pipeline is connected with an air inlet of a medium-pressure pressure stabilizing chamber, and an air outlet of the medium-pressure pressure stabilizing chamber is communicated with a first air inlet of an air exhaust through a first soft phase; an air outlet of the high-pressure fan is connected with an air inlet of the second air supply pipeline, an air outlet of the second air supply pipeline is connected with an air inlet of the high-pressure stabilizing chamber, and an air outlet of the high-pressure stabilizing chamber is communicated with a second air inlet of the air exhaust through a second flexible connector; the first magnetic control air cylinder controls the first flashboard to descend, the second magnetic control air cylinder controls the second flashboard to ascend, a part of medium-pressure air grids can be converted into high-pressure air grids, the air pressure in the part of air grids can be kept consistent with the air pressure and flow in the high-pressure air grids, thin glass is rapidly cooled, and tempering of the glass is achieved. The device has the advantages of stable structure, simplicity in operation and quickness in adjustment.

The utility model belongs to the printing die cutting technical field especially relates to a label digital printing die cutting machine, include: shell, the middle position department fixed mounting of shell inside has digital die cutting, the below of digital die cutting and located the rotation mounting of finished product winding wheel and unwinding wheel in the shell, the top of digital die cutting and located the rotation mounting of waste wheel and light membrane wheel on the inner wall of shell, annular groove, the annular groove is set up on the inner wall of shell, the sliding installation of annular groove has the adjusting column, the rotation mounting of the inner wall of shell has the rotating lever, and the adjusting column is located between the both ends of rotating lever, in this technical scheme, through setting up unwinding wheel, adjusting column, finished product winding wheel, a plurality of rotating rollers, fixed column, slicing knife group, printer and material receiving assembly and a plurality of adjusting assembly, ensure that the whole device has the printing, laminating, die cutting, slitting and slicing integration operation of printing material, realize the degree of highly automatic processing, be convenient for staff to use.

The utility model relates to the technical field of building construction, in particular to a device for controlling the elevation of poured terrace concrete, which comprises a base, a fixing plate and a sliding sleeve, the base is embedded underground and is L-shaped, and an empty groove is longitudinally formed in the vertical edge of the base; one end of the fixed plate is slidably connected with the empty slot of the base, and the other end is slidably connected with the sliding sleeve; a datum plate is fixed to one side wall of the sliding sleeve, a threaded hole is formed in the side wall, opposite to the datum plate, of the sliding sleeve, the bolt is in threaded connection with the threaded hole, when the position of the datum plate is adjusted, the bolt is in clearance fit with the fixing plate, and when the datum plate is fixed, the bolt tightly abuts against the fixing plate. The terrace is divided into a plurality of small blocks by a plurality of devices, so that the effect of better controlling the flatness of the terrace is achieved.

The utility model discloses a liquid cooling assembly which comprises a liquid cooling plate body used for cooling a battery module, and the liquid cooling plate body is fixed in a battery box body through a plurality of self-plugging rivets; the liquid cooling plate body is fixedly mounted in the battery box body through the self-plugging rivets so as to cool the battery module in the battery box body, and the liquid cooling plate is mounted through the self-plugging rivets, so that the deformation degree of the liquid cooling plate caused by mounting is reduced, and the flatness of the liquid cooling plate is controlled.

The utility model relates to an assembly type damping wall installation structure which comprises an upper cantilever wall, a lower cantilever wall and a viscous damper, a first embedded part is arranged on the right side of the lower end of the upper cantilever wall, a second embedded part is arranged on the left side of the upper end of the lower cantilever wall, the viscous damper is horizontally arranged, and connecting plates are welded to the two ends of the viscous damper. The connecting plates at the two ends are connected with the first embedded part and the second embedded part correspondingly, a post-pouring area is arranged at the ends, away from the viscous damper, of the upper cantilever wall and the lower cantilever wall and is a trapezoidal groove in the middle of the lower end of the prefabricated cantilever wall, and the width of wall limbs on the two sides of the trapezoidal groove of the post-pouring area is equal to 20 mm. The concrete compactness of the wall body and the quality of the wall column are ensured; the on-site construction speed is accelerated, and the flatness of the end face of the wall is structurally guaranteed; the connecting structure required for connecting and fixing the viscous damper and the wall body is pre-embedded in the wall body when the fabricated wall body is manufactured in a factory, so that concrete cracking during installation and complex operation of site construction are avoided.

The present invention provides a bolting matching method for super-long components with large cross-sections, and belongs to the technical field of bridge construction. The technical scheme is as follows: beam segment division, which divides the beam segment into two parts: a hollow box beam and a solid box beam; beam segment production, which produces a single beam segment; beam segment matching, which first arranges the matching frame, then adjusts the beam segment, performs the first beam segment matching, and then performs the return port matching and excess trimming work in sequence; performs the second beam segment matching, and performs matching drilling; performs the third beam segment matching. The beneficial effects of the present invention are as follows: the present invention adopts a temporary process partition and a code plate method when matching the ring mouth, which can effectively control the overall size of the matching port and the flatness of the end; adopts a portable milling machine, and the matching port has a high flatness; when matching the beam segments, a three-way jack is used to adjust the matching gap, and the matching accuracy is high; when welding the ring mouth corner weld, the welding shrinkage is pre-placed, which can effectively control the size of the ring mouth after welding.

The utility model discloses a cutting device for power cable processing, which comprises a working table, a first chute is arranged at the top of the working table in a penetrating manner, a driving assembly is arranged at the bottom of the working table, a first screw rod is arranged at the bottom of the working table through the driving assembly, and the surface of the first screw rod is rotatably connected with a fixing plate. The fixing plate is fixedly connected with the workbench, the surface of the first screw rod is in threaded connection with a first moving plate, a clamping assembly is arranged at the top of the first moving plate, an adjusting assembly is arranged at the top of the workbench, a moving frame is arranged at the top of the workbench through the adjusting assembly, and a lifting assembly is arranged at the top of the moving frame. A second moving plate is arranged in the moving frame through a lifting assembly, and a cutting assembly is arranged on the second moving plate. And the cable is cut after being tightened, so that the cable can be kept in a linear state, and the length measurement error caused by bending or loosening of the cable in the cutting process is avoided.

This invention discloses a multi-directional rough milling process for an automotive reducer housing and the housing itself, belonging to the field of automotive technology. The process includes: artificially aging the housing; selecting at least two areas on the edge of a preset area of ​​the main positioning datum surface of the housing to create auxiliary positioning holes; grinding an auxiliary positioning datum surface on the housing; placing the housing on a support substrate using the auxiliary positioning datum surface and auxiliary positioning holes as positioning references; using a clamping mechanism to simultaneously clamp the housing at multiple points, avoiding thin-walled areas of the housing; using a machining equipment with an A-axis rotary table, milling the main positioning datum surface in the preset area of ​​the main positioning datum surface using the auxiliary positioning datum surface as a reference, and then milling the side surface of the housing using the main positioning datum surface as a reference; after the flatness of the main positioning datum surface meets the requirements, performing low-temperature stress release treatment. This application establishes a complete process flow from pretreatment, positioning and clamping, multi-directional rough milling, dynamic control to detection and stress release.

The invention discloses drilling fluid lubricant storage equipment, and belongs to the technical field of drilling fluid lubricant production, the drilling fluid lubricant storage equipment comprises a storage structure used for storing a drilling fluid lubricant, and the storage structure is provided with a stirring mechanism used for stirring the lubricant and a pressure stabilizing mechanism used for keeping the air pressure in the storage structure in a balanced state; the storage structure can be supported, the bottom of the storage structure is prevented from making direct contact with the ground, and meanwhile the bearing part can be properly adjusted according to the storage structures of different sizes so that the bearing part can be suitable for the storage structures of different specifications; the supporting mechanism can adapt to grounds of different mounting places, and even if the grounds of the mounting places are uneven, the flatness of the bearing part can be controlled by independently controlling the corresponding single-head air cylinders; movement is convenient, and the moving efficiency is improved; meanwhile, the moving parts have retractability, so that when the supporting mechanism is installed, the four moving parts can be folded and retracted to the bottom of the bearing part to be hidden and stored.

The image sensor chip packaging structure comprises a tube shell, a core cavity is formed in an opening in the upper end of the tube shell, a chip is arranged at the groove bottom of the core cavity, the chip is an image sensor, the chip is connected to the tube shell through a plurality of bonding wires, a plurality of pins are arranged at the lower end of the tube shell, and a glass cover plate is arranged at the core cavity of the tube shell. And the glass cover plate is adhered to the core cavity of the tube shell through the sealing rubber ring. And the chip is adhered to the bottom of the core cavity through insulating glue. The packaging method is used for packaging the packaging structure of the image sensor chip for space navigation. According to the packaging structure, the high-temperature co-fired ceramic substrate formed by sintering and pressing multiple layers of ceramic is adopted, so that a multi-layer circuit structure can be conveniently formed for a high-integration chip; the flatness, parallelism and roughness of the surface of the packaging substrate can be better controlled, and the chip mounting precision can meet the application requirement. The high-temperature co-fired ceramic is stable in structure and high in heat conductivity, heat dissipation of the chip is facilitated, and the requirement for high reliability of aerospace application can be met.

The invention provides an anti-blocking hole protection and smooth blasting collaborative operation system for peripheral holes of a large-section tunnel, and belongs to the technical field of tunnel construction. The method comprises the following steps: S1, determining peripheral hole arrangement parameters based on tunnel geological survey data; s2, a combined type anti-blocking hole protecting device is adopted for conducting drilling protection on peripheral holes, the anti-blocking hole protecting device is synchronously installed in the drilling process, and after drilling is completed, residual rock powder in the holes is removed through cooperation of high-pressure airflow and a rock powder collecting assembly; s3, adjusting light explosion parameters according to the rock firmness coefficient; s4, adopting a partition collaborative detonation mode, and adopting millisecond millisecond detonation for the peripheral holes and the main detonation holes; and S5, flatness detection is conducted on the tunnel slope after blasting. According to the method, integrated cooperation of anti-blocking hole protection, smooth blasting parameter optimization, detonation control and parameter closed-loop adjustment is achieved, the peripheral hole drilling quality, the smooth blasting effect and the construction efficiency are improved, the construction cost is reduced, and tunnel construction safety and structural stability are guaranteed.

The application relates to a flat material clamp, a flat material assembly and a guiding device for edge covering, wherein the flat material clamp is used for being assembled to a sewing device and guiding sewing material, the flat material clamp has opposite front and back directions and corresponding two lateral directions, the flat material clamp defines a sewing material channel for the sewing material to pass through in the front and back directions, and the flat material clamp comprises a top part located above the sewing material channel and used for smoothing the sewing material, a detection window is arranged on the top part, and the detection window is used for coupling a detection signal with the sewing material; a bottom part connected to the top part, the bottom part is located below the sewing material channel and provides a supporting surface for the sewing material, and at least one lateral direction of the sewing material channel is provided with a connecting part in an open mode, the connecting part is connected with the top part and / or the bottom part, and the flat material clamp is assembled to the sewing device through the connecting part. The flat material clamp in the application can pre-treat the sewing material, improves production stability, and the sewing material in a stable state can provide a basis for automatic detection and control and expand design space.