15results about How to "Reduce eccentricity" patented technology

The invention relates to the technical field of straightening equipment, and discloses an automatic matching straightening machine for shaft workpieces, which comprises a machine body, a plurality of linear sliding rails for a plurality of mechanisms to linearly move are arranged on the machine body, and strip-shaped tooth grooves matched with moving gears are formed in the two sides of the interior of the machine body; one side of the machine body is provided with a PLC (Programmable Logic Controller) control cabinet for calculating input shaft workpiece data information and generating a control signal, and the PLC control cabinet is used for controlling each mechanism on the machine body in an operation process. By adding and arranging the movable detection mechanism, when the shaft workpiece is straightened, the movable detection mechanism adopts a lever type detection structure, can be tightly attached to the surface of the shaft workpiece, sensitively captures bending deformation information of the workpiece, realizes accurate acquisition of deformation, avoids subjectivity and errors of manual detection, and improves the straightening accuracy of the shaft workpiece. And full-length movement detection can be realized along a linear sliding rail, all parts of the shaft workpiece are covered, and the condition of missing detection of a deformation position is avoided.

The utility model belongs to the technical field of power tool turrets, and particularly relates to a numerical control machine tool slant bed power tool turret turning and milling composite machine tool which comprises a numerical control turning and milling composite machine tool body, a power tool turret is arranged on the inner wall of the numerical control turning and milling composite machine tool body, and a motor installation groove is formed in the inner wall of the power tool turret. Servo motors are installed on the inner wall of the power tool turret, one servo motor is installed on the inner wall of the motor installation groove, a thermal shrinkage tool handle is installed at the output end of the servo motor, and a tool bit is movably connected to the inner wall of the thermal shrinkage tool handle. By arranging the thermal shrinkage cutter handle and utilizing the principle of thermal expansion and cold contraction, the cutter head is installed during heating and tightly held after cooling, vibration transmission can be reduced, the machining precision can be improved, errors can be automatically compensated, the coaxiality is ensured, the service life of the cutter head is prolonged, the surface quality is improved, the clamping force is higher, the cutter head can be effectively prevented from loosening, and the machining yield of fragile materials is improved.

The invention relates to the technical field of heat preservation pipes, in particular to a polyurethane heat preservation pipe heat preservation layer manufacturing process which comprises the following steps that S1, a conveying pipe penetrates through a protection pipe, the two ends of the protection pipe are connected with the conveying pipe through a support, and the protection pipe and the two ends of the conveying pipe are in a concentric state; the material injection opening is formed in the protection pipe, and then the fixing frame is arranged on the conveying pipe. The outer wall of the protection pipe is fixed after pipe penetrating, so that the problem that the thickness of a manufactured heat preservation layer is not uniform due to the fact that the protection pipe is eccentric due to the fact that the protection pipe collapses under the action of gravity is avoided, and therefore on the premise that the use of a wood block support is reduced, the concentricity of the protection pipe and the conveying pipe can still be guaranteed, and the uniformity of the heat preservation layer is guaranteed; in this way, the service life of the polyurethane thermal insulation pipe is prolonged, use of wood block supports is reduced, pipe penetrating can be more convenient, and the manufacturing efficiency of a thermal insulation layer of the polyurethane thermal insulation pipe is effectively improved.

The invention provides a stator outer diameter roundness detection mechanism and method based on internal expansion type positioning, and relates to the technical field of precision measurement, the stator outer diameter roundness detection mechanism comprises a base station, a rotation driving module, a product positioning module, a lifting driving module and a detection module, the product positioning module adopts an internal expansion type mechanism composed of a top column, a positioning block and a wedge block group, the wedge block group is driven to radially tighten the inner hole of the stator through the axial movement of the top column, so that different inner diameter tolerances are adapted, high-precision and non-eccentric positioning is realized, during detection, the lifting driving module drives the plurality of contact displacement sensors to move along the axial direction of the stator and scan the outer diameter contour of the stator iron core unit, and meanwhile, the rotating driving module is used for indexing, so that the detection precision is improved. According to the invention, automatic and high-efficiency detection of the outer diameter roundness of all stator core units is realized, the problems of inaccurate positioning and poor universality of a traditional jig are effectively solved, and the detection precision and efficiency are remarkably improved.

A non-submerged cavitation-erosion synergistic damage simulation device, system and method belong to the field of hydraulic machinery working condition simulation, including a sediment jet channel and a cleaning fluid channel in its periphery; high-speed sand-containing fluid is introduced into the sediment jet channel to form a central high-speed jet impacting the sample surface, high-speed cleaning fluid is introduced into the cleaning fluid channel to form a peripheral low-speed water curtain surrounding the central high-speed jet after being ejected from the annular steady flow pipe, and the peripheral low-speed water curtain impacts the sample surface to form a local liquid phase confining pressure zone together with the central high-speed jet. The present application not only realizes the true simulation of the actual working condition under non-submerged conditions, but also can adjust the flow and pressure of the cleaning fluid to adjust the cavitation number and cavitation collapse intensity around the high-speed sand-containing jet without changing the atmospheric environmental pressure, and quickly adjust the simulation test parameters.

This invention discloses an H-beam positioning device and method for SMW (Self-Mixed Mixing) piles. A guide trench is formed in the soil at the top of the SMW pile, with its centerline aligned with the centerline of the SMW pile. The SMW pile includes multiple mixing piles evenly distributed in the soil at the bottom of the guide trench for inserting H-beams. The H-beam positioning device comprises multiple positioning device bodies, each including a positioning frame, at least two markers, and at least two observation points. This invention uses variable-length connecting rods and fixing bolts to connect multiple positioning device bodies into a single unit, accommodating various H-beam insertion methods. The observation points, in conjunction with the markers, monitor the position of the H-beams during insertion, reducing the probability of eccentricity. It eliminates the need to move individual positioning device bodies to the next H-beam insertion point after the current H-beam is completed, thus improving construction efficiency.

The present application relates to the field of building structure energy dissipation construction, and discloses a method for hoisting viscous damping wall without support, which is suitable for concrete structure wall; the method comprises the following steps: determining two bearing holes on the concrete structure wall above the installation opening, setting bearing pull rods in the bearing holes, and forming detachable bearing connection through wall surface pressure bearing parts; setting adjustable hanging seats on the side of the bearing pull rods facing the installation opening, and adjusting the position of the upper lifting point in the wall thickness direction; setting lower guide supporting seats at the lower embedded steel plates; connecting two lifting parts with the adjustable hanging seats and the hoisting connection parts of the viscous damping wall respectively, setting synchronous differential parts, and then synchronously lifting the viscous damping wall; guiding the lower end of the viscous damping wall to laterally enter the position through the lower guide supporting seats, and completing correction, temporary fixation and welding fixation in the semi-unloading correction state. The method does not need to set up floor support, and can improve the stability of the viscous damping wall hoisting, positioning and welding before positioning in the narrow opening.

The utility model discloses elevator speed governor action speed detection platform, including quick locking assembly, quick locking assembly includes concave strip and convex strip, the outer ring of main shaft rod four -around fixed installation concave strip, the outer ring of external connection axle four -around fixed connection convex strip, convex strip protruding end activity joint concave strip groove end, quick locking assembly still includes rectangular groove, dismounting spring, clamping block and clamping groove, the middle part of convex strip is seted up rectangular groove, and dismounting spring and clamping block are connected in rectangular groove, and clamping block is located above dismounting spring, and the middle part of concave strip is seted up clamping groove, and clamping block is connected in clamping groove. The utility model can guarantee the concentricity of main shaft rod and external connection axle through the accurate matching of geometric shape, reduce the eccentric problem of shafting caused by bolt hole error or uneven assembly, reduce additional radial force and vibration, make motor output speed more stable, thereby improve the precision of speed governor action speed detection.

This invention relates to the field of land consolidation and development technology, and in particular to a land leveling device and method with adjustable functions. The leveling method involves first determining a reference horizontal plane, then dividing the farmland into m*n blocks. The bucket passes through n rows of farmland sequentially along a first direction, recording the distances h1 to hn between the reference horizontal plane and the blade. Based on the data h1 to hn, the average distance h between the blade and the reference horizontal plane when in n rows of farmland is obtained. Δh is measured based on the soil volume in the bucket and the farmland area. (h-Δh) is the distance between the target leveling surface and the reference horizontal plane. The bucket height is adjusted to maintain the distance (h-Δh) between the blade and the reference horizontal plane. The process continues along a second direction, passing through m rows of farmland sequentially, completing the farmland leveling. The leveling method provided by this invention facilitates the determination of the target leveling surface and is more conducive to agricultural cultivation and irrigation drainage.

The utility model discloses a cast aluminium rotor broken strip testing arrangement belongs to testing technical field, including test platform, cast aluminium rotor broken strip testing arrangement still includes test subassembly and drive assembly, and test subassembly is located with drive assembly in test platform, and test platform includes workbench surface, and test subassembly and drive assembly are located workbench surface upper and lower two sides respectively, and test subassembly includes positioning subassembly, detection subassembly and clamping assembly, and the plane of clamping assembly is perpendicular to the plane of workbench surface, and rotor is located in clamping assembly, and detection subassembly is located one side of clamping assembly, and the plane of clamping assembly is perpendicular with the plane of positioning subassembly each other. The gravity direction is consistent with rotor axial direction through the vertical arrangement of clamping assembly in test platform, and rotor is naturally drooping under the action of gravity, and reduces the additional eccentricity or sway of the gravity, and compared with horizontal arrangement, can reduce the rotor unbalance influence of the factor such as installation, improves test stability.

The application discloses a kind of multi-physical field experimental devices for strong magnetic field, it is related to strong magnetic field technical field, including bearing assembly, pneumatic stirring assembly, reaction bottle fixing assembly and photo-thermal liquid bath component;Bearing assembly includes bearing frame and lifting mechanism, pneumatic stirring assembly includes air supply equipment, flexible air pipe, turbine, planetary reducer and stirring paddle, reaction bottle fixing assembly includes fixed frame structure and reaction bottle, photo-thermal liquid bath component includes outer bushing, heat equalizing cylinder, heating film, quartz window, light source and radiator.The application has the advantages that the reaction area can be accurately adjusted to the target magnetic field strength and magnetic field gradient position by precise positioning and lifting, and the illumination, heating and stirring can be cooperatively loaded and relatively independently controlled in the local reaction bottle, so as to meet the stable operation and rapid sampling requirements of multi-physical field reaction experiment under strong magnetic field extreme environment.

The utility model relates to the technical field of flange machining equipment, in particular to a rapid clamping tool for flange detection, which comprises a workbench, a detection table is arranged on the workbench, the detection table is located at the center position of the workbench, movable seats are arranged on the workbench in a sliding manner, the movable seats are respectively arranged on two opposite sides of the workbench, and the movable seats are arranged on the workbench. The workbench is provided with a driving assembly used for driving the two movable seats to be close to or away from each other, the movable seats are provided with clamping blocks, the clamping blocks are located on the opposite side walls of the two movable seats, elastic buffering assemblies are arranged between the movable seats and the clamping blocks, the clamping blocks are provided with V-shaped grooves, and the V-shaped grooves are located in the V-shaped grooves. The V-shaped grooves are located in the opposite side walls of the two clamping blocks. The flange fixing device has the advantages that the problems of poor repeated positioning and insufficient universality of a flange fixing mode are solved, and the clamping efficiency of the flange is improved.

This utility model belongs to the field of smart lock technology, and relates to a clamping mechanism and a smart door lock. The clamping mechanism includes a rotating component and a slide adjustment component axially connected to the rotating component. When the rotating component rotates and there is eccentricity, the slide adjustment component adjusts in a first direction and / or a second direction to reduce the eccentricity; wherein the first and second directions intersect and are both in the radial direction. The clamping mechanism and smart door lock provided by this utility model, when the rotating component of the clamping mechanism rotates and there is eccentricity between the knob or key and the rotating component, the slide adjustment component can adjust in the first direction and / or the second direction to reduce the eccentricity, effectively avoiding the problem of the clamping mechanism being unable to rotate or the lock being damaged due to forced rotation of the clamping mechanism. This effectively improves the usability and service life of locks with this clamping mechanism, providing users with a better user experience.

This utility model relates to the field of curling irons, and more particularly to an adjustment device for an adjustable curling iron, including an adjustment part comprising a rotating paddle, a first gear and a second gear, and a driven gear; and a rotating part comprising a positioning plastic, heating wires, a drive shaft, and a support shaft. This utility model achieves high precision and stability in adjusting the curling area of ​​the curling iron through precise gear transmission and axial limiting design. The rotating paddle, through meshing with the first and second gears, can precisely control the rotation angle of the driven gear, thereby driving the coordinated movement of the drive shaft. The first limiting protrusion passes through the first limiting groove and the moving groove, ensuring the movement of the positioning plastic with the heating wire attached when the drive shaft operates, ensuring precise positioning and smooth movement of the rotating parts, effectively preventing the curling iron from shaking and loosening during use, and allowing for arbitrary adjustment of the size of the curling area formed by each heating wire, improving the accuracy of the curling iron and the user experience.

The invention discloses packaging equipment capable of rapidly replacing a roll film, and relates to the technical field of packaging equipment, the packaging equipment comprises a film releasing device, a V-shaped shaping device and a packaging host, a driving motor drives rotating rings on the two sides to rotate oppositely through a bevel gear and a transmission thread, so that driving side pressing rollers on the two sides are synchronously folded towards the middle and are matched with the upper contour of a transition section; inconsistency caused by respective left and right adjustment is reduced, and the centering and adjusting efficiency of the bending surface is improved. And the upper partial pressure roller and the lower partial pressure roller vertically clamp and roll a triangular surface and form rolling support, so that a film is stressed more uniformly at a transition section, feeding is more stable, and deviation and broken line drift caused by local tension fluctuation are reduced. The driving side pressing roller is attached to the inner side of the bent face, the driven side pressing roller is attached to the outer side of the bent face, symmetrical rolling limiting and rolling clamping are formed on the bent faces on the two sides, springback, wrinkling and edge warping of the bent faces are restrained, and the convergence trend and forming consistency of the bent faces are enhanced.