65 results about "Lateral displacement" patented technology

The invention discloses a cast-in-place concrete beam construction method based on deformation control, and relates to the field of cast-in-place beam construction. S2, foundation treatment; s3, a support is erected and pre-pressed; s4, a formwork is installed; s5, steel bars and prestressed pipelines are installed; s6, concrete construction; and S7, removing the bracket. BIM modeling and an intelligent monitoring system are combined, the foundation treatment range is expanded, an automatic drainage system is arranged, edge settlement and rainwater soaking are effectively avoided, a support system is selected according to needs, anti-sidesway design is strengthened, stress is accurately simulated through graded automatic loading and pre-pressing, reliable deformation data are ensured through double monitoring, pre-camber calculation is scientific, errors are reduced, and the construction efficiency is improved. Formwork, reinforcing steel bars and prestressed pipelines are installed in a standard mode, the structural quality is guaranteed, concrete construction pays attention to temperature control and maintenance, crack reduction and support dismantling are symmetrically carried out in a grading mode, the springback amount is monitored in real time, and construction safety is guaranteed.

The invention discloses a monocular four-dimensional imaging device and method based on a metasurface. The monocular four-dimensional imaging device comprises an image sensor and an imaging optical system arranged in front of the image sensor. Wherein the imaging optical system comprises a metasurface, the metasurface is designed to simultaneously generate a self-acceleration Airy point spread function with depth-dependent lateral displacement for incident left-hand circularly polarized light and right-hand circularly polarized light, and the self-acceleration Airy point spread function can generate a self-acceleration Airy point spread function with depth-dependent lateral displacement under the condition that a mechanical moving part is not used. Carrying out polarization separation and focusing on the left-hand circularly polarized light and the right-hand circularly polarized light; the image sensor is used for recording a mixed image containing the left-hand circularly polarized light information and the right-hand circularly polarized light information at the same time through single exposure so as to obtain three-dimensional depth and polarization information of the metasurface, namely monocular four-dimensional imaging of the metasurface. The scene perception and understanding capability of a machine is greatly enhanced, and the method has unique advantages in the aspects of target identification, material discrimination, severe environment perception and the like.

The invention relates to the technical field of constructional engineering equipment, in particular to a rigidity and energy dissipation adjustable composite energy dissipation bearing device which comprises a first connecting plate, a second connecting plate, a first damping part and a second damping part. The first damping piece is arranged on the first connecting plate on the column body in a friction sliding mode, and the second damping piece is connected between the beam body and the first damping piece in an included angle mode, so that the flexural rigidity of the beam-column joint can be effectively improved under the action of frequent earthquakes, and the initial rigidity and lateral displacement resistance of the structure are enhanced; the rigid response performance of the structure under the action of small earthquakes is improved; the second damping piece can adjust the energy dissipation path through the change of the included angle between the length direction of the second damping piece and the axis of the column body in the earthquake action process, the friction sliding mechanism of the first damping piece is matched, the energy dissipation capacity of the joint under the earthquake action is effectively improved, and therefore structural stress concentration is reduced, and structural damage is delayed. The structure is light in weight, convenient to install and wide in application range.

The invention belongs to the technical field related to tunnel anti-seismic analysis, and discloses a green function analytical method and equipment for rayleigh wave dynamic coupling response of an interval tunnel in an inclined field. The method comprises the steps that S1, soil deformation and displacement in the x direction and the y direction caused by Rayleigh wave propagation are converted into tunnel equivalent seismic loads in the x direction and the y direction through a viscoelastic geobasic structure model; s2, a Timoshenko beam model on a viscoelastic Pasternak foundation is adopted to establish a partial differential equation set for controlling axial and transverse dynamic displacement responses of longitudinal discrete units of the interval tunnel; s3, deducing four Green functions representing the bidirectional dynamic coupling response of the tunnel in combination with a Green function method and an artificial spring boundary; and S4, performing integral operation on the Green function by using a superposition principle, and introducing an exponential function term containing time t to obtain axial displacement and transverse displacement of the tunnel and corresponding axial and transverse dynamic coupling response coefficients. According to the invention, the solving efficiency is improved.

The invention discloses an optimization method of a low-loss bending waveguide, which comprises the following steps: firstly, adopting NA bending as a basic bending path, determining two optimal boundary NA curves for a given equivalent bending radius Reff, and forming a width gradually-changed NA bending waveguide structure; lateral shift amounts din and dout are introduced into the input end and the output end of the constructed NA bending waveguide structure with the gradually-changed width respectively, and optimal lateral shift amounts din and dout are obtained through step-by-step parameter scanning and simulation optimization; and based on the optimal lateral shift amounts din and dout, obtaining a curved waveguide structure combining an NA curved path, width gradient and a specific lateral shift parameter. According to the method, the mode mismatch loss and the radiation loss can be remarkably reduced at the same time for the NA bending waveguide with the ultra-small radius, and the total transmission loss of the bending waveguide is further reduced on the basis of the prior art.

The invention relates to the technical field of steel structure engineering construction, in particular to a super-long independent steel column segmented locking type temporary stabilizing device and a construction method thereof, and is suitable for the overall lifting stage of a multi-layer aerial corridor. The device comprises a first locking assembly surrounding a concrete column and providing an X-direction lateral fulcrum; the second locking assembly is fixedly connected to the surface of the steel column to form a force transmission interface; and the connecting conversion assembly connects the steel column and the concrete column into a whole, so that the X-direction load of the steel column is transmitted to the concrete column in sections. The super-long steel columns are temporarily decomposed into short column stress sections with the length not larger than the designed length, and lateral displacement is remarkably restrained. The construction method comprises the steps that the device is installed at the corridor joint, pre-tightening force is synchronously applied, displacement is monitored in real time, overall dismantling is conducted after lifting is completed, and no residue exists after dismantling. The method is not pre-buried and fully recycled, super-long columns are restored to be in a short column stress state, lateral displacement is reduced, steel is saved, the construction period is shortened, green construction and appearance completeness are both considered, and the method is suitable for a large-span corridor overall lifting project.

The invention discloses a design method of a hinge type curved pipe pressure balance type expansion joint based on CAESAR II, and relates to the technical field of simulation of expansion joints in CAESAR II. The method comprises the steps that an expansion joint body pipe section of the hinge type curved pipe pressure balance type expansion joint is established in a CAESAR II according to initial design parameters, a hinge model comprising multiple sections of hinge plates connected in sequence is established in the radial direction of the expansion joint body pipe section, and a pin shaft is simulated by applying a first constraint to the connecting position of every two adjacent hinge plates, establishing a simulation model of the hinge type curved pipe pressure balance type expansion joint; performing displacement analysis on the simulation model to obtain an axial displacement value and a transverse displacement value; and updating the simulation model based on the process design parameters, and carrying out iteration. The technical problems that according to a traditional method, only a whole rigid body structure can be adopted for simple simulation, the real mechanical behavior of the expansion joint cannot be reflected, the displacement response of the expansion joint is seriously shifted from the actual physical state, and design of materials, structural parameters and the like of the expansion joint is not accurate are solved.

The invention provides a bow and arrow side pad with position and speed measurement, which comprises a protective shell in a hollow column shape and used for being detachably mounted on a bow handle through threads, and a measuring assembly detachably accommodated in the protective shell and used for measuring the position and speed of an arrow, comprising a measuring shell, a control panel, a light wave emitting sensor, a light wave receiving sensor and a wireless transmission module, the wireless transmission module is used for wirelessly transmitting measured data to external electronic equipment, and an adjusting assembly is arranged in the protective shell; wherein the measuring shell is in sliding fit with the protective shell, so that the measuring assembly can generate lateral displacement under the action of the adjusting assembly. According to the invention, the core function of applying accurate lateral force to the arrow through the adjusting assembly is reserved, and automatic acquisition and wireless transmission of the to-be-launched position and the departure initial speed of the arrow are synchronously completed through a built-in light wave sensing and wireless transmission system on the premise that the normal operation process of a shooter is not interfered at all.

This invention relates to the field of pile foundation testing, and more particularly to a pile foundation testing device and method for civil engineering construction. The device includes a tamping apparatus for testing the pile body and testing components. In this invention, when the pile body tilts, the light spot undergoes vertical and / or lateral displacement on the receiving plane. If the tilt causes the light spot to move upward or downward, it may partially or completely enter the light aperture range of adjacent adjustment apertures. For example, when the top of the pile tilts to the right, due to the clockwise rotation of the transmitting end, the projection point of the 45° beam moves upward on the receiving end plane. The light spot originally illuminating the middle adjustment aperture may simultaneously cover the edge of the light aperture of one or two upper adjustment apertures. If the tilt angle is large, the center of the light spot may completely move out of the original aperture and into the adjacent aperture area, or even cross multiple apertures. Therefore, the tilt amount of the pile body can be determined by monitoring the number of infrared receivers that have sensed infrared radiation.

The utility model discloses a mounting structure of a red light emitter, the red light emitter is used on a sighting device, the sighting device is provided with an outer shell, the outer shell comprises a fixed shell, and the red light emitter is arranged in the fixed shell; the fixing shell is arranged on the clamping sleeve; the transverse adjusting assemblies are arranged at the left end and the right end of the clamping sleeve correspondingly, and the transverse adjusting assemblies are connected with the side wall of the fixing shell in a matched mode so as to adjust transverse displacement of the fixing shell; and the vertical adjusting assemblies are arranged at the left end and the right end of the clamping sleeve correspondingly, and the vertical adjusting assemblies are connected with the shell in a matched mode so as to correct and adjust the vertical displacement and / or the transverse displacement of the clamping sleeve. The device is simple in structure and reasonable in design, and the mounting position of the red light emitter can be effectively and properly adjusted, so that the use experience of a user is further improved.

The invention relates to the field, in particular to pile foundation detection equipment for civil engineering construction and a detection method, the pile foundation detection equipment comprises a tamping device used for detecting a foundation pile body and a detection assembly, and in the pile foundation detection equipment, when the foundation pile body inclines, light spots generate vertical and / or transverse displacement on a receiving plane. If the light spot moves upwards or downwards due to inclination, part or all of the light spot possibly enters the range of the light through hole of the adjacent adjusting aperture. For example, when the top of a foundation pile inclines rightwards, the whole transmitting end rotates clockwise, the projection point of a 45-degree light beam moves upwards on the plane of the receiving end, and light spots originally irradiated on the middle adjusting aperture may cover the edges of light through holes of one or two adjusting apertures above at the same time; if the inclination angle is large, the center of the light spot may completely move out of the original through hole, enter an adjacent through hole area and even cross a plurality of through holes, and therefore the inclination amount of the foundation pile body can be judged according to the number, monitored by the terminal, of the infrared receiving ends which sense infrared rays.

The invention provides a polarization-insensitive tunable light beam deflector based on cascade metasurfaces, and relates to the technical field of optics. The polarization-insensitive tunable light beam deflector sequentially comprises a first-layer metasurface, an air gap and a second-layer metasurface from bottom to top, the first-layer metasurface and the second-layer metasurface are both composed of elliptical nano-column arrays which are periodically arranged; the lateral displacement dx of the second layer of metasurface relative to the first layer of metasurface in the x direction and the lateral displacement dy of the second layer of metasurface in the y direction are adjusted in a mechanical mode, the total phase distribution of the cascade metasurface is changed to generate a phase gradient, and continuous deflection scanning of an emergent light beam in a two-dimensional space is achieved. The polarization-insensitive metasurface unit structure is realized by adopting the elliptical nano-columns. The nanorods are rotated by 45 degrees, so that the unit structures have the same regulation and control capability under x and y polarization, and the problem that a traditional anisotropic structure is sensitive to the polarization state of incident light is solved.

This invention provides a dual-platform absorbing tip transverse positioning system, installed on the floor of an anechoic chamber to simulate different radio wave environments. The system consists of two parallel hydraulic platforms with densely arranged absorbing tips on them, and a raised floor is mounted on the hydraulic platforms. The hydraulic platforms are driven by hydraulic cylinders to lift and lower scissor supports. Sprockets are located at both ends of the platforms, driven by chains, and a transverse motor is also provided. The motor drives the sprockets through gear engagement, causing the absorbing tips on the platforms to move laterally. The raised floor, originally a metal reference surface, can be adjusted to a non-reflective environment according to testing requirements. The hydraulic platforms rise, driven by the transverse motor, and the absorbing tips of the two platforms unfold laterally, providing a non-reflective test. The aforementioned actions are reversed, causing the platforms filled with absorbing tips to retract and disappear under the raised floor. This system can flexibly switch between different testing environment conditions to meet the diverse needs of the anechoic chamber.

This invention discloses a method for measuring the diffraction efficiency of a grating based on a partitioned grating reflector, comprising: a laser source, a collimating mirror, a plane mirror, a partitioned grating reflector, a beam splitter cube, an electric turntable, a lateral displacement stage, a screen, a first photodetector, and a second photodetector. The electric turntable supports the plane mirror and the partitioned grating reflector; the lateral displacement stage supports the laser source, the beam splitter cube, the screen, the first photodetector, and the second photodetector. First, the plane mirror is used to perform a coarse vertical calibration of the laser incident direction. Then, the partitioned grating reflector is installed, and a fine calibration is achieved through the reflection zone, calibrating the position of the reflected light spot. Based on this, the laser source is moved so that the incident light illuminates the grating under test, aligning the position of the zero-order diffraction spot with the calibrated reflected light spot position, thus achieving effective alignment. Consistency verification of the measurement process is achieved through multiple comparisons of the calibration results.

The utility model provides a shock isolation device, which relates to the technical field of equipment shock isolation structures and particularly comprises a support component and a reset part. The supporting assembly comprises a first platform and a second platform, the supporting assembly is formed by arranging the first platform and the second platform in a spaced mode in the vertical direction, an arrangement space is formed between the first platform and the second platform, and the reset piece is arranged between the first platform and the second platform and can freely roll in the arrangement space. The multiple reset units are arranged in the same horizontal plane in a surrounding mode along one point, and the multiple first platforms are connected end to end to form a bearing table used for bearing equipment. Effective damping and resetting functions are realized by combining a geometric structure with the dead weight of equipment without depending on the characteristics of an elastic material, so that mechanical fatigue and material aging caused by vibration are prevented, large vibration and lateral displacement of the equipment can be effectively prevented, impact of an earthquake on the equipment is reduced, and the service life of the equipment is prolonged. Therefore, the service life of equipment is prolonged.

The present disclosure relates to a system for determining corrugation of a film, which has a predetermined dimension in a width direction and extends in a longitudinal direction, due to tension acting on the film and inhomogeneity of a film material in a roll-to-roll inline apparatus that conveys the film in the longitudinal direction. The system includes: a lateral displacement sensor mounted on one or more of two sides of the film in a width direction to be spaced apart from a surface of the film, and configured to measure a displacement of the surface of the film; and a ripple determination unit for converting a lateral displacement value of the film surface as a function of time measured by the lateral displacement sensor into an amplitude value as a function of the frequency signal and comparing the converted amplitude value with a preset amplitude value as a function of the frequency signal, to determine the presence or absence of corrugations in the membrane.

An interferometer based on an atomic force microscope ("AFM") uses a light source and a beamsplitting optical interface to split a light beam into a signal beam and a reference beam. Both the signal beam and the reference beam are focused near an AFM cantilever. A beam displacer introduces a lateral displacement between the signal beam and the reference beam that causes the center of the signal beam to be separated from the center of the reference beam by more than half the sum of their beam diameters in at least one plane between the beam displacer and a focusing lens structure. A detector operates to determine a difference in the optical path length between the signal beam and the reference beam to determine information about movement of the cantilever.

1. A method of detecting a detection angle in a lithographic apparatus, comprising: a calibration substrate having a refractive index n and having a first pair of markers, the markers having a predetermined lateral displacement relative to one another, a first marker in the pair being at a first predetermined vertical position within the calibration substrate and a second marker in the pair being at a second predetermined vertical position within the calibration substrate, the calibration substrate being mounted on a first surface thereof; illuminating the marker pair with a light source and detecting light redirected from the first and second markers with a detector having an optical axis that is oriented at a detection angle of less than 90° with respect to a normal to the substrate; α1 and determining a first detected angle based on a first detected lateral displacement between the first marker and the second marker.

A lens for vehicular lamp which projects a light distribution image including a non-irradiation area which does not irradiate a mask object and an irradiation area which irradiates other areas, wherein the lens for vehicular lamp is configured to clearly project a first non-irradiation area for masking at least a mask object that exists at a long distance in a vicinity of an intersection of a horizontal line and a vertical line in the light distribution image onto a first location that is a first distance away in an optical axis direction of the lens for vehicular lamp, and a second non-irradiation area for masking at least a mask object that exists at a close distance laterally displaced from an intersection of the horizontal line and the vertical line in the light distribution image onto a second location.

The application discloses a target point accurate positioning and large workpiece measuring device and a measuring method thereof. The motion range adjusting part is used for adjusting the position of the measuring point in a large range, controlling the movement of the measuring device, and making the measuring device reach a general direction suitable for the operation of the camera group; the angle adjusting part is used for adjusting the working visual angle of the device in 360 degrees; the vertical displacement adjusting part is used for calibrating target points of different heights; and the horizontal displacement adjusting part is used for controlling the movement range of the camera group, so as to improve the measuring precision. The application solves the problems of difficult initial calibration and low precision in the prior art.

The application provides a single-wall steel caisson with T-shaped ribs and a construction method thereof, and the single-wall steel caisson comprises a plurality of single-section steel caissons assembled in the longitudinal direction, each single-section steel caisson comprising a circular steel caisson, a plurality of T-shaped stiffening ribs arranged uniformly and at intervals in a ring shape on the outer wall of the circular steel caisson and a plurality of drag-reducing grouting pipes on the inner wall of the circular steel caisson. Based on the change of the section form of the single-wall steel caisson, the strength and rigidity of the whole single-wall steel caisson structure are strengthened by arranging the T-shaped stiffening ribs on the outer wall of the circular steel caisson, the problems of large lateral displacement of the caisson, local stress concentration of the caisson wall and insufficient stability of the caisson caused by insufficient rigidity and large load of the existing single-wall steel caisson are solved, the depth of the steel caisson and the engineering safety are ensured, and the further development of the steel caisson to the longitudinal depth is supported.

The application discloses a kind of six-degree-of-freedom error correction three-dimensional motion measurement system and measurement method, including optical air floatation platform, six-degree-of-freedom error correction three-dimensional motion measurement system, two-dimensional motion machine table, reference optical flat, color confocal measurement bridge component, camera measurement bridge component and thin film interference component;Camera measurement bridge frame module in the application acquires the image of concentric circle in the image grid sensor system, the concentric circle image is based on subpixel processing and concentric circle identification to obtain high-precision transverse displacement, based on linear interpolation calculation mode forms two virtual measurement lines in X, Y two directions, the intersection of measurement line is the placement position of color confocal head, the thin film interference component is placed directly below the head, the thin film interference component uses super-precision optical flat as measurement reference, so that the application satisfies three-dimensional zero Abbe error, three-axis zero coupling error, improve the measurement accuracy of three-dimensional motion measurement platform.

The utility model relates to light control biaxial horizontal material collecting machine technical field, and disclose a light control biaxial horizontal material collecting machine with tension adjusting mechanism, including the bottom plate, the bottom plate top fixedly connected with light control biaxial horizontal material collecting machine body, the light control biaxial horizontal material collecting machine body top both sides are all fixedly connected with the transverse board, the transverse board top one side fixedly connected with the workstation, the workstation bottom both sides are respectively fixedly connected with first shell and second shell. The utility model discloses the setting of transmission motor can drive first threaded rod and second threaded rod synchronous rotation to drive threaded bushing and mobile plate horizontal displacement to adjust the position of the tensioning roller, realize the dynamic adjustment to the coiled material tension, and this is according to the characteristics of different materials and process requirement flexible adjustment tightness, avoid the material relaxation, wrinkle or overstretching in the process of winding due to tension uneven, reduce material loss and the rate of defective products.

The invention belongs to the technical field of ultra-precise angle measurement, and discloses a six-dimensional angle measurement device and method based on wavefront interference fringes. Three paths of detection laser are used for generating three wavefront interference light spots, spatial frequencies and phases of the light spots in the horizontal direction and the vertical direction are calculated respectively, and simultaneous decoupling is carried out to accurately measure six-degree-of-freedom information of axial displacement, longitudinal displacement, lateral displacement, pitching, deflection and rolling angles of the reflector. According to the six-degree-of-freedom measuring device, single-principle integrated six-degree-of-freedom geometric quantity measurement can be achieved, the measurement resolution is high, the measurement result can be directly traced to the laser wavelength, and the requirement of high-end equipment for ultra-precise six-degree-of-freedom geometric quantity measurement is met.

The utility model discloses a gantry lifting mechanism for an immersion type electrophoresis pool, which relates to the technical field of electrophoresis production lines and comprises a connecting plate, a positioning plate and a lifting seat, and a dismounting positioning mechanism is arranged at the joint of the positioning plate and the lifting seat and used for quickly dismounting the positioning plate and the lifting seat. According to the gantry lifting mechanism for the immersion type electrophoresis pool, through the clamping design of the I-shaped butt joint blocks and the butt joint grooves, a stable embedding relation is formed, transverse displacement in the lifting process is effectively avoided, the stability of the overall structure is guaranteed, the stability of the whole structure is improved, and the service life of the gantry lifting mechanism is prolonged. In cooperation with a first screw with reverse threads and a limiting rod structure in the disassembly and assembly positioning mechanism, synchronous opening and closing of a clamping plate can be achieved by rotating the screw, disassembly and assembly of a positioning plate and a lifting base are rapidly completed, operation is convenient and efficient, the convenience of adaptive replacement of the clamping unit is greatly reduced, and the production flexibility and efficiency are improved.

The application discloses a physical-based Fourier ptychographic light source pose correction method. The low-resolution image obtained through the Fourier ptychographic light path is affected by the pose deviation of the LED lamp plate in the system, thereby affecting the reconstruction quality. The application firstly constructs a physical model of the bright field to dark field boundary of the captured image for the microscope used, collects a group of low-resolution images of empty slides, screens out transition images with bright-dark boundaries, and calculates the bright-dark field boundary information of the transition images and the unbiased transition images generated by the model to solve the full pose parameters (including the distance from the sample, two orthogonal lateral displacements, the in-plane rotation angle and two tilt angles) of the misaligned LED array. The illumination angle can be accurately corrected, thereby ensuring the accuracy and uniformity of the illumination effect. It is verified through experiments that the application achieves good correction effect in practical application and enhances the robustness of the Fourier ptychographic reconstruction system to the light source position deviation.

The invention discloses an enclosure structure displacement calculation method and system considering pit bottom upheaval caused by foundation pit excavation, and the calculation steps are as follows: taking the cross section of a foundation pit, taking the projection of the center of the foundation pit on the earth surface as the original point, taking the width direction of the foundation pit as the y axis, and taking the vertical direction as the z axis, and establishing a pit bottom upheaval curve function; based on an image source method and a pit bottom upheaval curve function, differentiating the pit bottom upheaval and enabling the differentiated pit bottom upheaval to be equivalent to a circular pore, and deducing to obtain soil body transverse displacement of any point on the enclosure structure; the method comprises the following steps of: applying a stress balance equation based on a rod system finite element method under the action of transverse displacement disturbance of a soil body to obtain a displacement vector of an end node of each beam unit, and obtaining a displacement field function in each beam unit through the vector; based on the displacement field function, obtaining an overall deformation curve of the enclosure structure considering the pit bottom upheaval, so as to obtain the displacement of any point on the enclosure structure; in the deep foundation pit, the method can accurately reflect the influence of the pit bottom upheaval on the displacement of the surrounding soil body and the enclosure structure.

This invention provides a non-contact online visual measurement method and system for wheel-rail dynamic attitude parameters, belonging to the field of 3D point cloud visual measurement technology. Based on the principle of stereo vision measurement, it reconstructs a wheel-rail cross-sectional profile point cloud sequence from the acquired image sequence of the structured light-illuminated cross-sectional area on the outer side of the wheel and rail, according to calibration parameters. Based on the reconstructed wheel-rail cross-sectional profile point cloud sequence, it partitions and fits planes, calculates and decomposes the angles of the normal vectors of specific planes using multi-frame information, and obtains angle parameters. Based on the reconstructed wheel-rail cross-sectional profile point cloud sequence, it fits the wheel circle using inter-frame and geometric constraints to determine key points in the wheel-rail region and the rail reference plane, and calculates wheel-rail displacement parameters. This invention enables simple, accurate, and safe non-contact measurement of lateral displacement, heave, yaw angle, and roll angle of the wheel during train operation; it provides rapid, accurate, and reliable theoretical and technical support for non-contact measurement of wheel-rail motion attitude.

The utility model relates to the technical field of roll shaft processing, and discloses a special stacking tray for roll shafts, which comprises a placing base, a tray body, a tray body and a tray body, and is characterized in that the placing base is provided with a horizontal placing surface; the number of the stacking frame bodies is at least one, each stacking frame body comprises two placing frames and a plurality of blocking pieces, the whole placing frames are arranged in a wave shape and placed on the placing face of the placing base, the wave crest and the wave trough of each placing frame are each provided with a placing area used for storing roll shafts, and the roll shafts can be placed in the placing areas; and the plurality of blocking pieces are arranged in pairs, are respectively arranged at the wave crests and the wave troughs, and are used for blocking the transverse displacement of the roll shafts. The special stacking tray for the roll shafts aims at solving the problems that in the existing roll shaft stacking technology, the surfaces are abraded, the roll shafts are inconvenient to take out, and potential safety hazards exist.

The invention discloses a lateral deviation measurement system and method based on modulated sine waves, and belongs to the technical field of space laser interference and optical precision measurement, and the method comprises the steps: in a laser heterodyne interference measurement and control system, an advanced pointing mechanism is driven to make periodic sine deflection with the frequency of Y. Detecting a phase value of a beat frequency signal in the four-quadrant detector through a phase meter; decoupling a time domain light beam included angle and a time domain optical path difference; solving a logarithmic amplitude spectral density function of the light beam included angle and the optical path difference; solving a complex mode of the logarithmic amplitude spectral density function of the light beam included angle and the optical path difference at the frequency of the modulated sinusoidal signal; calculating lateral offset through the complex modulus ratio of the optical path difference to the light beam included angle; and judging whether the lateral offset is smaller than a threshold value, if so, inhibiting the TTL coupling effect, otherwise, adjusting the high-precision displacement table through the controller to reduce the lateral offset, and circulating the steps until the lateral offset is smaller than the threshold value. According to the invention, high-precision quantization and suppression of lateral offset are realized.