19results about How to "Eliminate tilt" patented technology

The invention discloses a PCB leveling device, and particularly relates to the technical field of PCB processing, the PCB leveling device comprises a workbench, the upper end of the workbench is provided with an upper leveling assembly, the upper end of the workbench is fixedly connected with a fixed seat, the upper end of the workbench is provided with a through groove, the right end of the workbench is provided with a feeding assembly, and the right end of the workbench is provided with a lower leveling assembly. A cleaning assembly is arranged at the left end of the feeding assembly, and a heating assembly is arranged at the lower end of the upper leveling assembly. According to the PCB leveling device, the PCB in the feeding process is firstly cleaned through the assembly, dust and impurities are prevented from affecting the machining quality, then the upper leveling assembly descends to drive the heating assembly to preliminarily heat and press the PCB through cooperation between structures, moisture and bubbles on the surface of the PCB are removed, and the PCB leveling efficiency is improved. And finally, the upper and lower surfaces of the PCB are synchronously pressed through the upper leveling assembly and the lower leveling assembly, all-directional calibration is performed on the PCB, and accurate leveling of the PCB is realized.

The invention relates to the technical field of computer vision and coal mine intelligent mining, and discloses a lightweight working face three-dimensional reconstruction method and device fusing geometric prior constraints, and the method comprises the steps: firstly screening a dynamic effective region based on a projection relation and texture features, and removing static redundant scenes; performing sparse visual reasoning and depth regression only for the effective area to generate an initial depth map; carrying out physical structure correction on the depth map by utilizing geometric priori such as vertical upright posts and parallel top plates of the hydraulic support; and finally, constructing an optimization objective function containing deviation constraints of the vertical column perpendicularity and the top plate parallelism, and completing high-precision fusion of the incremental point cloud. According to the method, inference delay is reduced by reducing invalid calculation, structural distortion and registration drift caused by an underground severe environment are effectively inhibited by using a geometric law, and real-time and high-fidelity reconstruction of a working face scene is realized.

The invention relates to the technical field of rock-soil mass mechanical tests, and particularly discloses a rock mass and structural surface integrated test shear box matching device and a test method. Comprising a normal shear plate type displacement sensor, a normal pressure head, an integrated shear box, a shear box tray, an X-direction anti-friction rolling row, a Y-direction anti-friction rolling row, a Z-direction counter-force anti-friction rolling row, a power loading module, a loading base plate and a horizontal counter-force assembly, the normal shear plate type displacement sensor is connected with the normal pressure head through the normal dynamic cylinder standby cap, the ball head compression plate and the positioning pin; and the normal shear plate type displacement sensor is used for measuring the normal loading displacement of the oil cylinder. According to the method, the direct shear integration function can be achieved, and therefore direct shear tests can be carried out on rock masses and structural plane samples of different sizes to research the size effect in actual engineering; the friction-reducing rolling rows are arranged at the top, the side surface and the bottom of the upper shear box, so that the friction of each contact part of the shear box can be reduced, and the credibility of a test result is improved.

The utility model discloses an oil cylinder ejection and reset mechanism of injection mold relates to injection mold technical field, and its technical scheme main points are: including movable template, oil cylinder, clamping plate, connecting column, fender, fixed screw, limit block, ejector pin plate and ejector pin bottom plate, through the telescopic control of oil cylinder of hydraulic system, realize the ejection and reset action of ejector pin plate, and the effect is that the traditional reset spring is replaced by oil cylinder drive, and the continuous stable thrust is provided by using hydraulic system, and the rigid limit of cooperation limit block thoroughly avoids the reset deficiency caused by spring elasticity fatigue, and the ejector pin plate is accurately retreated to the initial position every time, guaranteeing, and the radial swing and inclination of ejector pin plate are eliminated through the clamping plate and fender piston rod both sides plane of oil cylinder, the rotation of connecting column is limited, and the T type groove adaptive structure of connecting column and ejector pin plate is combined.

The utility model provides a kind of shell dismantling tool with fixed structure and anti- indentation contact surface, it is related to semiconductor device processing equipment technical field, the shell dismantling tool includes tool upper cover, tool base and press equipment connecting mechanism;Tool upper cover bottom is provided with rectangular boss and rectangular contact surface, rectangular contact surface is contacted with product copper bottom plate surface;Tool base surface is equipped with the positioning cylinder array matched with product bushing, and positioning cylinder array includes at least four convex positioning columns;Press equipment connecting mechanism includes the first threaded hole group being set in tool upper cover top and the second threaded hole group of tool base bottom, and first threaded hole group and second threaded hole group are respectively connected with press equipment executing mechanism rigidly by upper cover peg and base peg;Buffer pad is also provided on the working surface of tool base, is fixed by dovetail groove connecting structure, solves product copper bottom plate scratch, product DBC broken horn, and the problem that copper bottom plate is difficult to take from press tool inside.

This utility model relates to a steam wand, comprising a wand body with steam holes connected to a steam source; the surface of the wand body furthest from the steam source is the bottom surface, and the surface of the wand body closest to the steam source is the top surface; the surface of the wand body between the top and bottom surfaces is the side surface; a first nozzle is located on the wand body, connecting the steam hole and the side surface; a second nozzle is located on the wand body, connecting the steam hole and the side surface; wherein the second nozzle is located on the side of the first nozzle closest to the bottom surface; the axis of the second nozzle is offset from the axis of the wand body. This utility model uses the first and second nozzles to spray steam for whipping and fluffing milk. The whipping and fluffing steps are performed simultaneously. Furthermore, compared to adjusting the wand to a specific angle with the milk, inserting the wand vertically into the milk is easier to operate.

The utility model relates to the technical field of metallurgical mechanical equipment discloses a drag out roller lifting device convenient to maintain, including machine outside centring base and drag out roller support still include rotation transmission mechanism and lifting drive unit, the drag out roller support rotatablely connects on machine outside centring base through a rotating shaft, the rotation transmission mechanism includes a transmission axle, a swing arm and at least one bearing seat, the transmission axle is fixedly installed on the upper plane of machine outside centring base through bearing seat, one end of swing arm is fixedly covered on the transmission axle, and the other end is hinged with the bottom of drag out roller support, this drag out roller lifting device convenient to maintain, through the linear thrust of oil cylinder conversion is the rotary torque to transmission axle, oil cylinder no longer directly bears the partial load and impact load of drag out roller base, and the working condition is fundamentally improved.

The present invention relates to an adaptive compensation type mechanical seal device, comprising a graphite ring, a spring seat, a spring, a sealing ring, a spherical pad and a housing; the spring seat, the spring, the sealing ring and the spherical pad are all located in the housing; the spring acts on the graphite ring through the spring seat and the spherical pad by its own elastic force, so that the graphite sealing surface of the graphite ring is closely attached to the sealing surface of the shaft system parts, thereby playing a sealing role. The pad is used to ensure that the force transmitted from the spring to the graphite ring is axial output, eliminate the inclination of the end face of the graphite ring caused by the uneven force on the graphite ring (especially radial force and non-axial deflection force), and improve the effect of sealing surface matching.

The invention discloses a universal conical rod type prefabricated wall panel through hole forming method which comprises the following steps that according to a design drawing of a prefabricated wall panel, positions needing to be perforated are marked on a mold table, accurate punching is conducted on the marked positions through a punching tool, and then tapping treatment is conducted on the hole positions so that a conical core rod can be fixed in the follow-up process; the conical core rods are sequentially inserted into the tapped hole sites in the first step, each conical core rod is fixed through a bolt, it is ensured that the conical core rods are stable and do not incline, then the side molds of the wallboard are assembled around the conical core rods, it is ensured that the four side molds are connected seamlessly and firmly, and leakage during concrete pouring is prevented; the mold turnover rate is increased, the cost is reduced, the production efficiency and the product accuracy are improved, the first-pass yield is further increased, the maintenance and replacement cost is reduced, and the environmental friendliness and the safety are improved.

The utility model discloses a lens inclination adjusting structure and a camera, the structure is composed of a fixed cylinder, an inclination adjusting cylinder, a fastening nail and an adjusting nail, one end of the fixed cylinder is connected with a light emitting end of a lens, the other end of the fixed cylinder is provided with a first annular end face, and a plurality of first through holes are distributed on the first annular end face; one end of the inclined adjusting cylinder is fixed at the light inlet end of the camera, and the other end is provided with a second annular end face, and second through holes in the second annular end face are in one-to-one correspondence with projection positions of the first through holes. When the second through hole is a threaded hole, the first annular end face is provided with a threaded through hole, and the threaded nail abuts against the second annular end face through the first annular end face. Or when the first through hole is a threaded hole, the second annular end face is provided with a threaded through hole, and the threaded nail abuts against the first annular end face through the second annular end face. The relative inclination angle of the two annular end faces can be accurately controlled through the screwing depth difference of the threaded nails, the inclination deviation between an object plane and an image plane is effectively eliminated, and the full-image imaging definition is ensured.

The utility model provides a kind of flattening mechanism of brake disc spraying, it is related to brake disc field, including overall mechanism, the bottom fixed mounting of overall mechanism has auxiliary mechanism;The overall mechanism includes movable plate, the inner wall sliding connection of movable plate has a group of first sliding block, the top fixed connection of first sliding block has a group of rubber pad, the top fixed mounting of rubber pad has high-precision leveling platform, the top fixed connection of movable plate has fixed plate, in the utility model, using vacuum chuck, electric push rod, vacuum pump and the like component, realize brake disc automatic adsorption and leveling, without manual adjustment, solve the problem of low precision, poor efficiency of manual operation, improve the leveling consistency and production efficiency, high-precision leveling platform surface is precisely machined, cooperate vacuum adsorption force and make brake disc forcedly adhere, flatness error is small, can eliminate inclination, avoid the defect such as uneven coating thickness, sagging after spraying, improve spraying quality.

The application specifically relates to the technical field of household appliances, and particularly relates to a sweeper, which comprises a base provided with a rolling brush cavity and a battery cavity on a side close to the ground, the rolling brush cavity and the battery cavity are adjacently arranged along a first direction; a rolling brush mechanism is movably installed in the rolling brush cavity; an installation cavity is arranged on a side of the base far from the ground and between the rolling brush cavity and the battery cavity; the installation cavity is in communication with the rolling brush cavity; a driving mechanism is arranged in the installation cavity; a driving end of the driving mechanism extends into the rolling brush cavity and is connected with the rolling brush mechanism; under the driving effect of the driving mechanism, the rolling brush mechanism moves along a third direction. The driving mechanism is directly arranged in the installation cavity, the space of the base is fully utilized, the space utilization rate is improved, and the overall volume of the transmission mechanism can be reduced. The volume of the driving motor and the transmission mechanism is large, the compact layout of the sweeper in the longitudinal height can be reduced, and the thickness of the sweeper can be controlled within a certain range.

This utility model provides a special fixture for lathe machining of aerospace parts, including: a fixture body, a workpiece, clamping components, and supporting components; the fixture body has a workpiece positioning hole in the middle, the workpiece is movably mounted on the upper surface of the fixture body, workpiece locking screws are arranged adjacent to the side of the fixture body, and supporting components are evenly distributed on the lower surface of the fixture body. When used with a turning-milling composite CNC lathe, the workpiece is accurately positioned and clamped quickly and conveniently, which is suitable for batch processing and production, reducing the workload of employees while improving processing quality and production efficiency.

This invention proposes a self-calibrating fixture for grinding bearing inner raceways, relating to the field of bearing machining fixtures. A driven gear is fixedly connected to the rear side of the outer circumferential surface of the support guide tube. Four ranging modules are fixedly connected in a circular array on the outer circumferential surface of the support guide tube away from the driven gear. This solves the problem that in existing bearing inner raceway grinding processes, the lack of an effective self-calibrating structure leads to misaligned bearing rings not fully contacting the grinding structure, easily causing incorrect contact and breakage. By setting four infrared ranging modules on the outer circumferential surface of the support guide tube, after the bearing assembly is installed, a longitudinal push rod can be used to push the displacement arm, bearing plate, and other components to insert the ranging modules into the bearing assembly. The ranging modules are rotated through the guide tube, enabling accurate measurement of the bearing assembly's dimensional and positional deviations, and early detection of assembly tilt or dimensional abnormalities.

The utility model discloses a fan tower inclination correcting device which comprises an executing mechanism and a driving mechanism connected with the executing mechanism. The executing mechanism comprises a cylinder body, a first piston rod and a second piston rod. The top of the first rod part and the top of the second rod part are provided with bearing tables connected with a fan tower flange. The driving mechanism comprises a valve body and a valve core; the first valve port is connected with a power source, the first channel is connected and communicated with the first driving channel, and the second channel is connected and communicated with the second driving channel; the driving mechanism further comprises a driving assembly used for driving the valve element to move to switch the first channel or the second channel so as to drive the bearing table to ascend and descend. Aiming at the diseases such as crushing of concrete around a lower flange of an insertion ring type foundation, inclination of a cavity and a tower drum, inclination of the tower drum is eliminated by jacking of a fan tower inclination correction device.

This utility model relates to the field of steel bar cutting technology in construction, and discloses a steel bar cutting device for construction, including a frame. A feeding component is arranged on one side of the upper surface of the frame, and a cutting component is arranged on the other side of the upper surface of the frame. A chip removal guide groove is provided on the top of the frame near the cutting component. A rotating component is arranged on the upper surface of the frame between the feeding component and the cutting component. The rotating component includes a fixed seat. In this utility model, the drive motor of the rotating component drives the active gear transmission, which drives the rotating ring frame and the electric telescopic clamp to rotate. In conjunction with the electric cutting tool, bidirectional rotary cutting is achieved, eliminating cross-sectional tilt. Four electric telescopic clamps can be telescopically adjusted to clamp steel bars of different diameters, improving processing efficiency. The fixed seat and rotating slot ensure rotational stability. The overall structure improves cutting accuracy and operational safety.

The utility model discloses a radar flowmeter which comprises an installation base and a concrete base, the installation base is a plate of a cylindrical structure, a radar cover is arranged on the installation base, an antenna assembly is connected in the radar cover, the antenna assembly corresponds to a bottom opening of the radar cover, and the concrete base is arranged on the installation base. An automatic horizontal adjusting assembly is arranged on the mounting base and is connected with the concrete base; the utility model relates to the technical field of measuring devices, the radar flowmeter forms a closed-loop automatic leveling system through the cooperative work of gyroscope sensing, control box operation and modularly designed leveling connectors, the modularized leveling connectors are arranged independently and in a distributed manner, each supporting point can be accurately lifted according to instructions, the inclination can be quickly eliminated, and the measurement accuracy is improved. According to the design, the requirement for the initial precision of the concrete base is remarkably reduced, inclination caused by follow-up settlement or displacement can be automatically compensated, it is ensured that radar beams are perpendicular to the water surface, the measurement precision is guaranteed, and meanwhile installation is more convenient and reliable through the spherical hinge structure.

A spraying machine for the inner wall of a large-inner-diameter metal pipeline relates to the technical field of spraying and is provided with a paint spraying mechanism, a rack and a rolling walking wheel rim mechanism, the paint spraying mechanism and the rolling walking wheel rim mechanism are both installed on the rack, supporting legs are arranged on the rolling walking wheel rim mechanism and can be controlled to stretch out and draw back, and the inner wall of the metal pipeline can be sprayed out along with rotation of the rolling walking wheel rim mechanism. When the rack moves to the end of the pipeline, the telescopic function of the supporting legs is started, the problem that a spraying machine falls or inclines due to the thickness change of the pipe wall can be solved, and then operation of the paint spraying mechanism is stabilized; and the paint spraying quality of the end of the pipeline is better guaranteed. Spraying can be achieved through manual remote control, and paint spraying operation can be conducted on site without pipeline carrying.

The utility model discloses a kind of adjustable depth's potato planter furrowing device, it is related to agricultural equipment technical field;The utility model includes crossbeam, the bottom of crossbeam is provided with furrowing device, the both sides of crossbeam are fixedly connected with fixed frame;The both sides of fixed frame are provided with support assembly, support assembly includes the fixed sleeve of installation in the front side and rear side of fixed frame;The utility model realizes the accurate adjustment and stable keeping of furrowing depth by the synergic effect of support assembly and limiting component, the vertical sliding of support rod in fixed sleeve cooperates the mechanical locking of limiting pipe, effectively eliminates the inclination problem caused by traditional furrowing device due to soil reaction force, support wheel and ground contact form stable three-point support structure, cooperate with the insertion of bidirectional limiting pipe driven by screw rod into support rod limiting hole, make furrowing device into soil angle deviation be controlled, simultaneously through the anti-rotation design of support sleeve and clamping plate, ensure that depth drift will not be caused due to vibration in operation process.