38results about How to "High leveling accuracy" patented technology

The invention discloses a workpiece table of a proximity contact type exposure machine. A horizontal driving device has a degree of freedom of movement along an X-axis direction and a Y-axis direction; the rotating table has the freedom degree of rotating around the central axis of the rotating table. The lifting table is arranged above the rotating table and has the degree of freedom of moving in the Z-axis direction; the Z-axis voice coil motor is arranged between the rotating table and the lifting table and used for driving the lifting table to move in the Z-axis direction. The ball bowl leveling assembly is arranged between the wafer carrying table and the lifting table and comprises a ball bowl seat with a bowl-shaped cavity and a ball head matched with the bowl-shaped cavity; a concave cavity is formed in the bottom of the bowl-shaped cavity; the spherical surface of the ball head is in sliding sealing fit with the spherical inner wall surface of the bowl-shaped cavity and seals the concave cavity; the mask frame is arranged above the wafer carrying table. According to the invention, the relative position and posture between the mask plate and the wafer can be adjusted, the accurate control of the leveling process is realized, the high-precision movement of four degrees of freedom of X / Y / Z / RZ is effectively realized, the accurate control of the leveling contact force is realized, and the practicability is high.

The invention relates to the field of high-altitude operation equipment and automatic control, and discloses a control system and method for a self-walking insulating lifting platform, and the system comprises a posture sensing module which is used for collecting the inclination angle and angular velocity information of the platform in real time; the dynamic modeling module is used for establishing a multi-degree-of-freedom dynamic model of the platform; the optimal control module is used for calculating optimal control input through objective function optimization; and the robust control module is used for realizing anti-interference leveling of the platform under an external disturbance condition based on a sliding mode control algorithm and in combination with adaptive gain adjustment. The method comprises the steps of obtaining real-time attitude information of a platform, establishing a multi-degree-of-freedom dynamic model, defining a weighted objective function and solving optimal control input, calculating control input based on a sliding mode control algorithm, and adjusting the positions of platform supporting legs to achieve a stable leveling state. According to the invention, the leveling precision and the anti-interference capability of the platform are improved, and the method is suitable for safe and stable operation under various complex terrain conditions.

The invention provides a wafer chuck, wafer bonding equipment, a leveling method of the wafer chuck and a computer readable storage medium. The wafer chuck comprises: a mounting substrate; the chuck body is connected with the mounting substrate through at least one tensioning mechanism and at least three piezoelectric screws; the at least one tensioning mechanism is used for providing a tensioning force for tensioning the chuck body to the mounting base plate for the chuck body; and the at least three piezoelectric screws are distributed at a plurality of first positions between the mounting substrate and the back surface of the chuck body in a non-linear manner, are used for providing supporting force for offsetting the tensioning force for the chuck body, and stretch out and draw back according to the distance from the corresponding position to a preset bonding plane.

The invention provides a three-dimensional force sensor decoupling device based on multiple postures. The three-dimensional force sensor decoupling device comprises an industrial robot, a laser tracker, a three-dimensional force sensor, a fixing device, a hanging rope seat, a hanging rope rotating shaft, a hanging rope, a weight and a reflection target ball. The fixing device is of a flat plate supporting structure and is installed at one end of a mechanical arm of the industrial robot. The three-dimensional force sensor is fixedly mounted on the fixing device through a positioning pin; the rope hanging seat is fixedly mounted in the middle of the three-dimensional force sensor through a bolt; one end of the sling rotating shaft is arranged in the middle of the sling seat, and the other end is connected with the weight through the sling; the four reflection target balls are fixedly mounted at the four end point positions of the fixing device; the laser tracker is installed on one side of the industrial robot. Meanwhile, the invention also provides a method based on the device, and the method does not need to use a special multi-dimensional force loading platform, thereby reducing the decoupling cost of the three-dimensional force sensor. And meanwhile, the three-dimensional force sensor can be decoupled in a large component assembling field.

The utility model relates to the technical field of building GRG suspended ceilings, in particular to a GRG panel suspended ceiling leveling structure which comprises a first panel and a second panel, the first panel is provided with a first folded edge, the second panel is provided with a second folded edge, the first folded edge is connected with the second folded edge through a first fastener, and the second folded edge is connected with a second fastener through a second fastener. The first panel and the second panel are spliced together; the leveling piece is fixedly arranged on the side, away from the folded edge, of the first panel and / or the second panel, the leveling piece abuts against the first panel and the second panel, and the leveling piece, the first panel and the second panel are located on the same plane. Aiming at a multi-curved-surface and large-space GRG ceiling project, the structure can quickly adjust the first panel and the second panel to the same plane, so that the time for leveling the GRG panels is shortened, the construction efficiency is improved, the structure is simple to operate and high in leveling precision, and the risk of reworking is reduced.

The present invention provides a novel wind profile radar antenna array leveling mechanism, wherein the leveling mechanism is distributed in an array at the bottom of the wind profile radar antenna array, and includes legs; a coarse adjustment structure, which is detachably arranged at the middle of the legs, and the legs can be lengthened or shortened by adjusting the coarse adjustment structure; a fine adjustment structure, which is detachably arranged at the top of the legs, and the upper end of the fine adjustment structure is connected to the intersection of the wind profile radar antenna array, and the wind profile radar antenna array can be slightly moved and rotated up and down by adjusting the fine adjustment structure. The present invention also provides a leveling method of the leveling mechanism, which can perform coarse and fine adjustments, and the coarse adjustment adjustment range is large, and is mainly used to adjust the larger distance caused by ground undulations; the fine adjustment adjustment range is small, and is mainly used to adjust the smaller distance between antenna array units; the operation is simple, the leveling time is short, the leveling accuracy is high, the structure is simple, and the cost is low.

The invention provides a multi-leg automatic leveling control system and method, and the system comprises a sensing system which is used for collecting the data of a to-be-tested platform; the control system is used for receiving data of the platform to be tested and sending an instruction to the driving device according to a leveling control algorithm; the driving device is used for receiving an instruction of the control system and operating the executing mechanism; and the execution mechanism is used for completing specified actions. According to the leveling control algorithm, the number and the positions of the supporting legs can be designed according to load distribution, the main leveling supporting legs and the main supporting legs are selected, the over-constraint problem caused by redundant supporting legs in the multi-leg leveling process is solved, and the virtual leg problem in the leveling process can be avoided.

The invention discloses a leveling method and device for an automatic leveling platform, a tilt angle sensor detects tilt angle data of a platform surface in real time, calculates error angle data of an X axis and a Y axis of the platform and sets a leveling threshold value based on tilt angle data information, if x is smaller than or equal to theta and y is smaller than or equal to theta, it is considered that the platform is leveled, otherwise, it is considered that the platform is leveled. If yes, angle pulse ratio constants NX and NY are calculated based on the mechanical structure parameters and the pulse lead ratio of the stepping motors, pulse error data PX and PY are calculated according to the error angle data, and control pulse quantities M1 and M2 of the first stepping motor and the second stepping motor are calculated; after receiving the control signal, the stepping motor driver drives the stepping motor to adjust the angle of the platform and synchronously monitors the limit switch, if the leveling condition is met, the leveling completion is fed back to the upper computer, the platform is finally ensured to reach an ideal horizontal state, and the automatic leveling platform has wide application prospects in multiple fields.

The utility model provides a stable guide mechanism for a plate leveler, which belongs to the field of plate leveler equipment and comprises a main frame, a leveling component and an adjusting component. A mounting cover is mounted outside the main rack, and a control panel is mounted on the surface of the mounting cover; a threaded sleeve is rotatably installed on the periphery of the surface of a main machine frame, a lifting rod is in threaded connection with the interior of the threaded sleeve, a lifting base is fixedly installed on the top of the lifting rod, and a roller shaft upper support is fixedly installed at the bottom of the lifting base. A driving belt wheel rotates to drive a driven belt wheel on the surface of a threaded sleeve to rotate through a gear belt, so that the threaded sleeve rotates, an internal lifting rod drives a lifting seat to ascend and descend along with the threaded sleeve, a roll shaft upper support is driven to conduct lifting adjustment relative to a roll shaft lower support, and flattening machining of plates with different thicknesses is met; the application range is widened.

The present invention discloses a displacement control system and a leveling method for facade decoration, which belongs to the technical field of wall decoration brick leveling, and includes a controller, a level, an actuator, and a laser detector, an electromagnet and an infrared rangefinder installed on the actuator; the electromagnet attracts the wire mesh, and the infrared rangefinder is used to measure the distance; the level projects a vertical reference plane and irradiates it on the laser detector, and the vertical reference plane serves as the leveling reference of the wire mesh; the controller controls the telescopic rod of the actuator to extend and retract, thereby driving the laser detector to move forward and backward with the actuator, until the reference line of the laser detector coincides with the vertical reference plane of the level. The present invention uses the level to provide a vertical reference plane in the form of a laser, and controls the actuator to drive the wire mesh to extend and retract through the controller, so as to realize automatic leveling of the wire mesh, and the leveling work efficiency is high, and the error of human operation is eliminated, so that the leveling accuracy is higher.

The invention provides a ceramic tile leveling device for indoor decoration laying, and relates to the technical field of indoor decoration, the ceramic tile leveling device comprises a first substrate and a laser range finder, the top surface of the first substrate is fixedly connected with a control panel, the control panel is fixedly connected with a flexible circuit, one side of the first substrate is fixedly connected with two insertion plates for supporting, and the other side of the first substrate is fixedly connected with the laser range finder; the two plug boards are jointly connected with a second substrate, fixing blocks are fixedly connected to the two ends of the first substrate and the two ends of the second substrate, and through the arrangement of the first substrate and the second substrate which are detachably stacked, when the flexible circuit board is in a transportation state, a butt joint plug and a butt joint socket of the flexible circuit can be separated, then the two L-shaped plug pins are taken down, and the flexible circuit board can be conveniently transported. And the four supporting mechanisms are taken down from the threaded grooves, the first substrate is stacked above the second substrate, and the butt joint grooves cover the circuit control unit, so that the overall transportation of the device is facilitated, and the problem that an existing device is inconvenient to transport is solved.

The invention discloses a sleeve-type underwater pile positioning frame device with auxiliary piles and a construction method. The pile positioning frame includes an intermediate sleeve, which is an upright hollow cylinder structure for sleeve connection with the auxiliary piles; a positioning frame connected to the outer periphery of the bottom end of the intermediate sleeve; an engineering pile sleeve, which has at least three and is connected to the positioning frame, and has a columnar space for inserting the engineering piles, and the geometric centers of at least three engineering pile sleeves are located on the axis of the intermediate sleeve; a leveling device, which is arranged in multiple groups along the axial direction of the intermediate sleeve, and each group of leveling devices includes multiple leveling oil cylinders uniformly arranged on the peripheral wall of the intermediate sleeve along the circumference of the auxiliary piles; the fixed ends of the multiple leveling oil cylinders are fixed to the intermediate sleeve, and the telescopic ends act on the auxiliary piles in the intermediate sleeve. This sleeve-type underwater pile positioning frame device has a light structure, low requirements on ship machinery and equipment, low construction difficulty, and high leveling accuracy of the pile positioning frame, and can be applied to the pile construction of the positioning frame foundation in deeper sea areas.

The invention relates to the technical field of constructional engineering, and discloses a building deformation monitoring device and method for constructional engineering, and the device comprises an upper mounting plate, the top of the upper mounting plate is slidably connected with a fixing frame, the top of the fixing frame is provided with a rotating mechanism, and the top of the rotating mechanism is provided with a fixing disc. An inclinometer is fixedly connected to the top of the fixing disc, a reflector mechanism is arranged at the bottom of the fixing disc, and a leveling mechanism is arranged at the bottom of the upper mounting plate. By arranging a double leveling structure of the leveling mechanism and the rotating mechanism, the leveling mechanism achieves automatic preliminary leveling through linkage of a pendulum bob and an electric telescopic rod, manual repeated operation is not needed, the leveling time is greatly shortened, the rotating mechanism can conduct micro-angle adjustment on a fixed disc through accurate transmission of a worm and worm gear teeth, and the leveling efficiency is greatly improved. The problems that an existing device is difficult in leveling, long in consumed time and insufficient in precision are solved, and the leveling efficiency and precision are improved.

The utility model relates to the technical field of indoor decoration, and discloses a floor tile paving leveling measuring tool which comprises a tool box, an inserting groove is formed in one side of the tool box, a moving groove is formed in the side, located on the inserting groove, of the tool box, the inserting groove is communicated with the moving groove, a sliding groove is formed in the bottom of the other side of the tool box, and the sliding groove is communicated with the moving groove. A sliding groove is formed in the middle of the tool box, a fixing clamping mechanism is arranged on the side, away from the sliding groove, of the tool box, a graduated scale is arranged on the side, located on the fixing clamping mechanism, of the tool box, and a partition plate is arranged in the middle of an inner cavity of the tool box. According to the leveling measuring tool, the tool box can be placed more stably, it is guaranteed that the tool is placed vertically and horizontally, when overall ceramic tiles in a room are leveled, the ruler does not need to be held independently manually, data leveling is accurate, the leveling accuracy can be improved easily, time and labor are saved, and the measuring efficiency can be improved easily.

The utility model belongs to the technical field of overweight embedded part leveling, and particularly relates to an overweight embedded part installation accurate leveling device which comprises a circular center disc, a plurality of inner supporting feet distributed in a central symmetry mode are arranged on the periphery of the center disc, and the inner supporting feet are used for being supported on the upper surface of an overweight embedded part. A plurality of ejector rods distributed in a central symmetry mode are arranged at the bottom of the center disc, the ejector rods can move in the radial direction of the center disc, the ejector rods are used for abutting against the inner side wall of a center hole of the overweight embedded part to enable the center disc and the overweight embedded part to be centered, and a detection ball capable of rolling is arranged on the upper surface of the center disc. A swing rod parallel to the upper surface of the center disc is arranged at the center of the center disc, the detection ball is rotationally arranged on the swing rod in a sleeving mode, and a plurality of outer supporting feet capable of moving in the circumferential direction of the center disc are arranged on the side face of the center disc and can ascend and descend in the height direction. The overweight embedded part leveling device has the advantage that the overweight embedded part leveling operation can be quickly, efficiently and accurately realized.

The invention discloses a full-automatic FPC appearance defect detection device and a detection method. The full-automatic FPC appearance defect detection device comprises a workbench, and the workbench is provided with a feeding unit, a detection unit and an after-detection classification unit; the feeding unit comprises a feeding platform and a feeding carrying hand, and the feeding carrying hand is used for grabbing a detected piece on the feeding platform; the detection unit comprises a positioning platform, a detection platform and a detection station; the after-inspection classification unit comprises a partition plate carrying hand, a discharging carrying hand, an OK product platform and an NG product platform. The invention relates to the technical field of FPC golden finger detection, the operation is convenient, products are automatically divided into two stacks after equipment detection, one stack is good products, the other stack is defective products, each product is independently numbered, the defective products are independently marked, and production line operation and manual re-judgment are facilitated. The product is prevented from moving in the detection process; and the air volume of the fan far exceeds the negative pressure, so that the use effect is not influenced even if part of air leaks. The platform plate is more convenient to adjust, and the leveling precision is high.

The utility model relates to machining equipment base field especially a kind of machining equipment base with shock pad. Including base, the surface of the four around base is equipped with adjusting structure, the adjusting structure includes several reserved slots, several the reserved slots are set on base, the inner wall of the reserved slot is connected with adjusting lever, the lower end of the adjusting lever is rotatably connected with support plate, the upper surface of the support plate is fixedly connected with slide bar, the surface of the slide bar is slidably connected with base, the side of the support plate is equipped with butt joint groove, the inner wall of the butt joint groove is slidably connected with butt joint block, the lower surface of the butt joint block is fixedly connected with shock pad. The utility model provides a kind of machining equipment base with shock pad, and the height of support plate can be accurately adjusted by rotating adjusting lever, equipment leveling is realized;Operation positioning rod, support plate and shock pad can be conveniently disassembled and assembled, and the advantages of convenient user maintenance.

The utility model discloses a longitudinal stretcher which is characterized in that a drying oven, a plurality of groups of stretching roller groups and a plurality of groups of driven roller groups are arranged on a rack, and speed differences exist among the stretching roller groups; at least one stretching roller set is arranged behind the drying oven in the advancing direction of the thin film; at least one stretching roller set and a plurality of driven roller sets are arranged in the drying oven, a preheating area and a heating area are arranged in the drying oven, the preheating area and the heating area are respectively provided with a heating module, the preheating area is provided with at least one driven roller set and at least one stretching roller set in the advancing direction of a film in a front-back mode, and the heating area is provided with a plurality of driven roller sets. According to the heating module, temperature compensation can be carried out on the end part of the main heating piece through the compensation heating piece, so that the temperature field distribution is more uniform, the temperature of the diaphragm in the width direction is consistent, the heating uniformity and the temperature uniformity are improved, local overheating or supercooling of the diaphragm is avoided, and the temperature control precision is high.

The present application relates to the field of tractor suspension, and particularly relates to a tractor suspension automatic leveling device and a control method thereof. The tractor suspension automatic leveling device comprises a mounting frame, a plurality of connecting beams are fixedly connected to the mounting frame, a damping leveling system is connected to the mounting frame, a suspension frame is connected to the damping leveling system, a horizontal plate is fixedly connected to the suspension frame, the suspension frame is used for mounting a machine tool, a double-shaft inclination sensor is mounted on the horizontal plate, and a rotating leveling system is arranged. The leveling and damping functions are integrated in the same oil cylinder. When the impact acceleration exceeds the set threshold, the inertia sensitive valve core is automatically opened, the main oil cylinder cavity is communicated with the energy storage cavity, the millisecond mechanical impact absorption is realized, the sensor and the controller are not needed to intervene, the response speed is superior to that of the traditional electric control damping scheme, after the impact, the hydraulic oil in the energy storage cavity slowly returns to the original position through the one-way throttling valve, the leveling and damping functions are cooperatively worked, and the posture deviation is avoided.

The present application belongs to the technical field of bed leveling, and particularly relates to a gravel bed leveling device and method suitable for shallow water areas. The gravel bed leveling device comprises a leveling frame, a measuring device, an adjusting device and a scraper. The leveling frame comprises two longitudinal beams and multiple cross beams, and a leveling bin is formed between every two adjacent cross beams. The measuring device comprises four measuring rods detachably connected to the four corners of the leveling frame, and the top end of each measuring rod is provided with a positioning device. The adjusting device comprises four height adjusting screws and four screw sleeves. The four screw sleeves are arranged near the four measuring rods and fixedly connected to the leveling frame, and the height adjusting screws are one-to-one screwed into the screw sleeves and penetrate through the leveling frame. The two ends of the scraper in the length direction are respectively removably crimped on the top surface of the cross beams on the two sides of the leveling bin. The present application provides a new leveling device for manual leveling of gravel beds in shallow water areas, and can improve the leveling accuracy of gravel beds in shallow water areas.

The utility model discloses a kind of printing production die cutting leveling devices, including leveler and heating roller, the side wall of leveler is rotatably installed with support plate and a pair of swing arms at corresponding position with heating roller, a pair of swing arms are fixedly installed with fixed rod between, elastic component is connected between fixed rod and leveler, the end of swing arm is fixedly installed with positioning rod, the both ends of support plate are respectively provided with the positioning slot for accommodating positioning rod, so that positioning rod cooperates positioning slot and provides stable supporting support for support plate.The utility model sets up foldable storage support plate on the side of leveler, which integrates material support and limiting guide function, ensures that material enters heating roller leveling area smoothly to improve leveling accuracy, when idle, support plate is folded along the matching track of positioning rod and positioning slot and adheres to the side wall of leveler, greatly compresses space occupancy, simple structure, convenient operation, improves the comprehensive performance of equipment, effectively controls equipment investment cost.

The utility model belongs to building construction technical field especially a kind of building construction wall surface leveling auxiliary device, including wall rest board, the both ends of wall rest board top outer wall are all fixedly connected with positioning plate, and wall rest board one side inner wall is rotatably connected with array distribution's pulley, wall rest board one end outer wall is slidably connected with baffle, and the inner wall on baffle is screwed with screw rod, and the outer wall of screw rod one end is rotatably connected on the outer wall of wall rest board one side.The utility model solves the problem of unstable positioning by the cooperation of wall rest board, positioning plate and pulley, ensures that the device moves smoothly, avoids the insufficient wall flatness caused by positioning deviation in traditional construction, improves the leveling accuracy, solves the tool adaptability problem by the combination of scraper and extension blade, loosens fastening knob to adjust the extension blade extension length along the strip-shaped groove, without frequent tool change, and the first sawtooth and second sawtooth reduce mortar adhesion, reduce cleaning difficulty, effectively improve construction efficiency.

The present invention relates to the technical field of metal sheet manufacturing, and specifically to an intelligent metal sheet manufacturing device, comprising a cold rolling mill body and a rolling roller, and also comprising a leveling wheel. The leveling wheel is located on the cold rolling mill body, and a plurality of leveling wheels are provided, and the two ends of the leveling wheel have different thicknesses, and the concave positions on the metal sheet are leveled by the leveling wheel. When this intelligent metal sheet manufacturing device is used, it is different from the prior art. The advantage of the leveling mechanism setting is that the material on both sides of the metal sheet is pushed to fill the concave positions by the leveling wheels with different thicknesses at both ends, which can ensure uniform force and avoid material deformation caused by excessive local force. On an automated production line, this leveling method can continuously process the metal sheet, greatly improving the leveling efficiency. At the same time, compared with the traditional leveling method, this design reduces the direct contact area between the metal sheet and the leveling tool, and reduces the risk of scratches caused by friction.

The invention discloses a coal mine belt conveyor tail automatic leveling system and a leveling method thereof. The coal mine belt conveyor tail automatic leveling system comprises a lifting oil cylinder, a driver, a controller, a tilt angle sensor and a displacement sensor. The leveling method comprises the following steps that S1, the four lifting oil cylinders are all lowered to the minimum value; s2, sending a monitoring value of a displacement sensor on the left side of the tail of the belt conveyor and a pitch angle value of a tilt angle sensor to a controller; s3, the height difference h is compared with the displacement value h of the lifting oil cylinder with the top end located at the high position; s4, leveling according to a comparison result; s5, sending a monitoring value of a displacement sensor on the right side of the tail of the belt conveyor and a pitch angle value of a tilt angle sensor to a controller; the step S3 and the step S4 are repeated, and leveling operation is conducted on the right side of the tail of the belt conveyor; s6, the monitoring value of the belt conveyor tail displacement sensor and the roll angle value of the tilt angle sensor are sent to a controller; s7, repeating the step S3; and leveling according to a comparison result.

The invention provides a small-pitch leveling device applied to a tripod, and relates to the technical field of electronic equipment structures. The device is used for telescopic adjustment of each supporting leg of the tripod, and each supporting leg is sequentially connected with an upper rod, a fine adjustment device and a lower rod from top to bottom. The upper rod and the lower rod are both of a cylinder structure. The fine adjustment device comprises a bearing seat, a bearing, an upper locking seat, a connecting shaft and a hand wheel of a barrel structure. When the hand wheel is rotated to drive the connecting shaft to rotate, the lower supporting seat drives the lower rod to move relative to the upper rod.

The utility model discloses a hydraulic adjustment supporting structure and a seismometer automatic leveling device, and relates to the technical field of seismometers, the seismometer automatic leveling device provided by the utility model realizes leveling of a seismometer in a hydraulic mode, leveling can be completed in a small range through hydraulic control, and the seismometer automatic leveling device is simple in structure and convenient to use. The leveling precision of the hydraulic cylinder is higher than that of a threaded connection mode, operation is easier, the leveling process is more stable, the hydraulic cylinder can keep stable for a long time after a liquid path is closed, the hydraulic cylinder is not prone to being affected by vibration and losing efficacy, the hydraulic cylinder is not prone to being corroded and damaged, and the maintenance period can be greatly prolonged.

The utility model relates to the technical field of roadbed construction, and particularly discloses a compaction device for leveling a highway roadbed, which comprises an equipment main body and a road rolling wheel structure arranged on one side of the equipment main body, the mounting structure is mounted on one side of the road rolling wheel structure, and the auxiliary leveling structure is arranged at the bottom of the mounting structure and used for leveling before road rolling; wherein the mounting structure comprises a mounting box and a swing rod arranged in the mounting box, and the top end of the swing rod is rotationally connected with the mounting box through a rotating shaft; the fixed rod and the movable rod at the bottom of the base plate horizontally reciprocate along with the base plate, the movable rod can dynamically adapt to uneven hardness or tiny fluctuation of the surface of a roadbed due to the arrangement of the spring piece, the leveling uniformity is ensured, the leveling operation is synchronously completed in the advancing process of the road rolling wheel structure, the leveled roadbed is rolled by the rear road rolling structure, and the leveling efficiency is improved. The surface of a roadbed is scraped and raked actively before the road rolling wheel structure rolls, loose filler is flattened in advance and evenly distributed, and the filler is prevented from being accumulated in front of equipment.

A layered marking and righting device comprises a layered marking rod, a protective barrel used for protecting the bottom of the layered marking rod from being eroded is arranged at the bottom of the outer side of the layered marking rod, three connecting devices are arranged above the protective barrel and arranged on the horizontal line of the layered marking rod in an equal-ring mode, and a tripod is arranged outside the connecting devices. The three horizontal rulers are arranged below the tripod, the centralizer is arranged above the connecting device, the level bubble is arranged at the top of the layering marking rod, and the layering marking head is arranged on the horizontal plane, where the level bubble is located, of the top of the layering marking rod. The utility model provides the layering mark centralizing device, the centralizer is arranged at the top of the layering mark rod, the layering mark centralizing device is simple in structure, convenient to operate and capable of being used for multiple times, top centralizing facility failure caused by stratum settlement of a layering mark is effectively prevented, and the leveling precision of ground layering settlement is improved.