84 results about "Construction surveying" patented technology

The invention relates to the technical field of construction measurement, and discloses highway tunnel construction settlement measurement equipment and a highway tunnel construction settlement measurement method.The highway tunnel construction settlement measurement equipment comprises a long insertion rod; a positioning mechanism; the root-shaped extension structures in the extended state are used for expanding the contact area of the combination of the long insertion rods and the soil; the plurality of anti-blocking mechanisms are respectively arranged at the openings of the corresponding root-shaped extension structures, and when the anti-blocking mechanisms are in an expansion state, the anti-blocking mechanisms are in contact with the outer walls of the root-shaped extension structures; a plurality of telescopic root-shaped extension structures are additionally arranged on the long insertion rod, after the long insertion rod is inserted into the ground by a set depth, the multiple root-shaped extension structures are driven to extend in multiple directions in the ground through external pressure, and a structure similar to a tree root shape is formed to form a strong combination state with a soil layer; the stability of the whole measuring equipment can be effectively improved, and error data are reduced.

The invention relates to the technical field of computers, and discloses a GIS-based highway construction measurement data intelligent processing system and method, and the system comprises a measurement area modeling module which is used for building three-dimensional space representation of a measurement area according to an input digital elevation model and road space information; the candidate point generation module is used for determining a plurality of control point candidate positions meeting layout conditions based on the three-dimensional space representation; the visibility analysis module is used for generating visibility associated data based on the spatial relationship between the control point candidate position and the key point of the measurement area; and the optimization decision module is used for constructing a constraint model and an optimization target of control point layout based on the visibility associated data. By introducing three-dimensional modeling, visibility analysis and error optimization technologies, automation, precision and high efficiency of a control point layout scheme are realized, and the measurement precision and the construction efficiency are effectively improved.

The utility model discloses a line pendant device for building construction measurement, which comprises a mounting mechanism and a measuring mechanism assembled in the mounting mechanism, the mounting mechanism comprises a mounting rack, one side of the mounting rack is provided with a telescopic plate in a sliding manner, one side of the bottom of the mounting rack is fixedly provided with a fixed clamping plate, and the fixed clamping plate is provided with a telescopic rod. A movable clamping plate used in cooperation with the fixed clamping plate is fixedly installed on one side of the telescopic plate. According to the plumb bob device for building construction measurement, through cooperation of a winding roller and a clockwork spring, automatic winding can be conducted after a plumb bob is used, the speed of plumb bob recycling is greatly increased through automatic winding, the workload of personnel is relieved, through cooperation of a spherical base and a horizontal laser, the working efficiency is improved, and the working efficiency is improved. The device can measure the levelness when a worker builds bricks on a wall, improves the accuracy of perpendicularity and levelness when the worker builds the wall through the device, and improves the quality of wall building.

The invention relates to the technical field of construction surveying and mapping, and provides a surveying and mapping instrument for building engineering construction, which comprises a laser scanning unit which comprises a polygon prism rotary scanning mechanism and a galvanometer system and is used for emitting laser beams with the wavelength range of 800-1600nm and generating three-dimensional point cloud data of a target area, and the adjustable range of the scanning frequency is 10-200Hz; the GPS positioning unit is integrated with a dual-frequency RTK differential module, supports Beidou / GPS / GLONASS multi-system positioning, obtains space coordinates (x, y, z) of a surveying instrument in real time, the positioning error is less than or equal to 2cm, and synchronizes differential data with a base station through a 5G network, the data delay is less than 50ms, and the environment sensor unit comprises a temperature and humidity sensor, an illumination sensor and a laser radar haze detection module. Under the haze condition, the image definition Q can be improved by 45%, the data stability can be improved by 60% when temperature and humidity fluctuate, the GB / T50328-2019 surveying and mapping precision AA-level standard is met, the automatic recognition rate of abnormal points is larger than or equal to 98%, the path planning time is shortened to be within 5 seconds, and the comprehensive surveying and mapping efficiency is improved by 35%.

The utility model discloses an all-directional angle measurement engineering construction measuring device, which relates to the technical field of engineering surveying, and comprises a triangular bracket, a placing seat is arranged on the triangular bracket, a theodolite main body is rotatably arranged on the placing seat, an observation eyepiece is arranged in the middle of the upper end of the theodolite main body, and an observation lens is arranged on the observation eyepiece. According to the theodolite disclosed by the utility model, through the synergistic effect of the bidirectional threaded rod, the sliding piece, the adjusting block and the clamping plate in the adjusting assembly, the angle of the observation eyepiece can be accurately fixed, and in engineering construction measurement, the observation eyepiece can be accurately adjusted, so that the measurement accuracy is improved, and the measurement precision is improved. And the device can ensure that the angle of the observation eyepiece cannot be changed due to external force interference or self-looseness in the measurement process, so that the accuracy and the reliability of measurement data are ensured, and a reliable measurement basis is provided for construction engineering.

The utility model belongs to the technical field of measuring devices, and particularly relates to a bridge construction measuring device which comprises a bearing table, a measuring instrument is installed on the bearing table, a rotating disc is sleeved on the bearing table, a supporting rod is in threaded connection with the rotating disc, a sleeve rod is sleeved on the supporting rod, a base is rotatably arranged on the sleeve rod, locking assemblies are arranged on the supporting rod and the sleeve rod, and an annular groove is formed in the rotating disc. The annular groove is rotatably provided with an I-shaped ring, the I-shaped ring is in threaded connection with a connecting ring, the connecting ring is fixedly provided with a mounting ring, the mounting ring is provided with a mounting groove, the mounting groove is rotatably provided with an auxiliary supporting rod, the auxiliary supporting rod is provided with a sliding groove, the sliding groove is slidably provided with an extending supporting rod, the auxiliary supporting rod and the extending supporting rod are provided with adjusting assemblies, and the extending supporting rod is provided with a supporting piece. The base tightly abuts against the inclined bridge floor, then the locking assembly is removed, the extension supporting rod slides to be inserted into the bridge floor, the locking assembly is closed, the inclined bridge floor of the measuring instrument can be supported, and follow-up construction of the bridge is facilitated.

This invention belongs to the field of construction surveying technology and discloses a laser measurement and control system for tower-type vertical kiln masonry based on cross-shaped control lines. By acquiring temperature field distribution and dust concentration data along the laser propagation path, a dual compensation mechanism for refraction offset and scattering attenuation is constructed to achieve accurate measurement of the center point coordinates and high-precision establishment of four-directional foundation measurement and control line groups. This invention employs a blind zone intelligent identification mechanism, using the extreme values ​​of deformation modes corresponding to each harmonic component as the basis for blind zone determination. Through adaptive supplementation of measurement and control lines and minimum area circle fitting calculations, it accurately evaluates and generates masonry correction commands. This invention also establishes a layered vertical sequence of circle center coordinates, combines circumferential statistical methods to identify systematic trend offsets, triggers a benchmark re-measurement process, and effectively controls cumulative errors. This invention is comprehensive and accurate, enabling full-link measurement and control and quality assessment of the vertical kiln masonry process, effectively ensuring that the verticality and roundness of the kiln body meet design requirements.

The application belongs to the technical field of construction surveying, and discloses a tower type shaft kiln masonry laser measurement and control system based on cross control lines; by acquiring temperature field distribution and dust concentration data on the laser propagation path, a refraction offset and scattering attenuation double compensation mechanism is constructed to realize accurate measurement of the central point coordinates and high-precision establishment of the four-directional basic measurement and control line group; the application takes the deformation modal extreme position corresponding to each harmonic component as the basis for blind area judgment through the use of an intelligent blind area recognition mechanism, and through adaptive supplementary measurement and control lines and minimum area circle fitting operation, the masonry correction instruction is accurately evaluated and generated; the application also establishes a layered circle center coordinate vertical sequence, identifies the systematic trend deviation in combination with the circular statistical method, triggers the reference re-measurement process, and effectively prevents and controls the cumulative error; the application has comprehensiveness and accuracy, can perform full-link measurement and control and quality evaluation on the shaft kiln masonry process, and effectively ensures that the kiln body perpendicularity and roundness meet the design requirements.

The invention provides a dock and wharf comprehensive repair construction method, belongs to the technical field of repair construction, and is suitable for dock and wharf engineering repair which is long in service life and serious in structure corrosion and damage. According to the method, a series of technical problems such as abrasion of a bottom plate of an old dock, corrosion of a dock wall, failure of a pull rod, damage of a dock structure and the like are solved through systematic construction measurement and deformation monitoring, divided dock structure repairing, dock dredging and structure reinforcing, floating dock construction and supporting facility repairing; efficient and safe repair of the old port hydraulic structure is achieved, the overall bearing capacity of the structure is improved, and the service life is prolonged. The construction process is clear, all procedures are closely connected, the whole deformation monitoring process is controlled, construction is safe, the repairing process is high in pertinence, and the method is suitable for repairing projects similar to coastal old docks and wharfs.

This invention belongs to the field of construction surveying technology and discloses a method and system for measuring the verticality of steel pipe columns used in pipe column construction. The method includes: real-time acquisition of reflective surface distribution data and ambient light intensity data at the construction site, and dynamic adjustment of the laser pulse parameters of the total station; dynamically setting a signal reception time window based on the laser pulse parameters to receive reflected signals; removing non-prism reflection signals from the reflected signals to obtain valid signals; precisely filtering interference signals from the valid signals to obtain the target signal; performing signal quality analysis on the target signal to determine whether feedback optimization is needed; if so, optimizing the laser pulse parameters and signal reception time window; otherwise, calculating the verticality of the steel pipe column. This invention not only significantly improves measurement accuracy but also enhances the system's adaptability and autonomy, thereby achieving efficient steel pipe column verticality measurement and improving engineering safety and construction efficiency.

The utility model relates to the technical field of house building construction, and discloses a municipal house building construction measuring marker post convenient to use, which comprises a rotating shaft rotationally connected to the inner side wall of a frame body; the gear is fixedly connected outside the rotating shaft; the left rack is fixedly connected to the right side wall of the left sliding block and meshed with the gear; the right rack is fixedly connected to the left side wall of the right sliding block and meshed with the gear; and the driving mechanism is arranged on the frame body and the rotating shaft. The device is carried to a construction site, the hand wheel is rotated, the driving mechanism drives the rotating shaft and the gear to rotate together, when the hand wheel rotates to enable the gear to rotate anticlockwise, the left rack and the right rack respectively drive the lower column body and the upper column body to extend out of the frame body together, so that subsequent measurement is facilitated, and after measurement is completed, the hand wheel is reversely rotated to drive the gear to rotate. The driving mechanism is linked with the gear to rotate clockwise, and the left rack and the right rack simultaneously drive the upper column body and the lower column body to retract into the frame body, so that the size of the device is reduced, and subsequent carrying is facilitated.

The application relates to the technical field of pre-construction detection, and discloses a building construction measuring device, which comprises a fixing mechanism and a base, the application aims at the problem that when a theodolite is in laser centering, the surrounding light is too strong to be observed clearly, the height position of the device is adjusted by rotating the threaded knob one to control the position of the connecting block two along the stretching position of the supporting leg one, the sliding block one drives the supporting arm to slide outward in the outward stretching process of the device supporting leg one, the supporting arm slides at the inner wall of the rotating block, the baffle is driven to rotate at the inner wall of the rotating block through the connecting rod while the supporting arm slides outward, the angle of the baffle can be adjusted to shield the light by adjusting the outward expansion degree of the supporting leg one, when the surrounding light is too strong in summer or the surrounding environment of the device, it is difficult to observe the clear infrared light point, the observation of the bottom infrared measuring point is affected, and a certain error is generated in the measurement result.

This invention belongs to the field of bridge construction surveying technology, specifically a method for measuring the verticality of bridge tower piers at close range and with large inclination angles in mountainous areas. The method includes: S1, calculating the angle between the intersection hypotenuse and the vertical line of the tower pier based on the known elevation and measured slope distance of the measuring point at the top of the tower pier, then calculating the horizontal distance and solving for the first corrected coordinates of each measuring point, thus avoiding vertical angle observation errors under large inclination angles; S2, accurately measuring the actual distance between the measuring points of the two tower piers, and using this as a constraint to adjust the first corrected coordinates to obtain a high-precision second corrected coordinate for the center of the tower top; S3, calculating the verticality based on the second corrected coordinates of the tower top and the known coordinates of the tower bottom. This invention effectively overcomes the problem of low measurement accuracy caused by close-range, large-inclination angle observations in narrow mountainous terrain, eliminates the need for multi-layered control networks, improves measurement efficiency and accuracy, and reduces operational risks and costs.

1. The name of the design product: water conservancy construction measuring instrument. 2. The use of the design product: the design product is used for water conservancy construction measurement. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The application discloses a kind of special-shaped curtain wall steel skeleton modular construction method, comprising the following steps: by three-dimensional software, establish the model of outer facade steel skeleton module and correct model, outer facade steel skeleton modular treatment, site construction surveying and setting-out, transverse keel and connecting piece installation, steel skeleton assembly, steel skeleton hoisting, aluminum plate installation, glue cleaning and inspection, this construction technology greatly reduces the measurement workload, reduces the possibility of measurement error occurrence, and this construction technology is by crane and aerial vehicle (straight arm vehicle or curved arm vehicle) cooperation construction, avoid the limitations of traditional measures basket or scaffold construction, reduce the time of high-altitude operation, at the same time, it is favorable to the management of welding fire prevention and fire connection work, welding fume purifier is placed conveniently, can effectively purify the smoke generated by welding, effectively solve the environmental protection problem, reduce construction cost.

The present invention discloses a construction engineering cost on-site surveying and mapping device, including a surveying and mapping protection mechanism, the surveying and mapping protection mechanism including a polygonal platform plate, a folding positioning mechanism installed on the surface of the polygonal platform plate, a comb-shaped guide groove extending from the edge of the top of the polygonal platform plate to the bottom, and a polygonal protection frame slidably installed inside the comb-shaped guide groove. The present invention relates to the field of construction surveying and mapping technology. The construction engineering cost on-site surveying and mapping device combines the surveying and mapping protection mechanism and the folding positioning mechanism. The arrangement of these two mechanisms can utilize the expansion and retraction of the U-shaped storage frame, and the linkage between the structures can be used to enable the polygonal protection frame to be raised and lowered on the top of the polygonal platform plate to protect the surveying instrument body. While the surveying instrument body is being raised for protection, the gear plate can also drive the gear disc seat and the surveying instrument body to correct and fix their positions, ensuring that the surveying instrument body will not shift during transportation.

The utility model provides an engineering construction measuring tool, and relates to the technical field of engineering construction. Comprising a mounting frame, a first measuring assembly facilitating measurement in the vertical direction is mounted in the mounting frame, the first measuring assembly comprises a measuring frame mounted in the mounting frame, a sliding plate is slidably connected into the measuring frame, and the sliding plate penetrates through one side of the measuring frame; one side of the mounting frame is provided with a second measuring assembly which is convenient to measure in the horizontal direction. According to the engineering construction measuring tool, the vertical direction and the horizontal direction can be measured at the same time through the first measuring assembly and the second measuring assembly, the practicability of the tool is improved, and the problems that existing measuring tools are various, workers generally need to carry various measuring tools, space is occupied, portability is poor, and the working efficiency is high are solved. And during measurement, a worker generally needs to separately measure data in the vertical direction and the horizontal direction, so that the operation is relatively tedious and the working efficiency is relatively low.

1. Name of the design product: Global Navigation Satellite System receiver. 2. Use of the design product: For satellite positioning, especially for precise geodesy or precise engineering surveying, such as for construction positioning, crack monitoring, foundation pit monitoring, house deformation monitoring, slope monitoring, ground subsidence monitoring, and construction surveying of wharfs, dams, bridges, tunnels, or subways. 3. Design points of the design product: In shape. 4. Pictures or photos best indicating the design points: Perspective view.

The utility model belongs to house building auxiliary equipment technical field relates to a house construction surveying device, including the height adjusting device of accommodation box movable installation, the angle adjusting device is detachably arranged on the height adjusting device, and the support device is abutted on one side of height adjusting device, and the cover plate is hinged on the accommodation box, and the surveying appearance is detachably installed on the angle adjusting device. The utility model through the first motor drive base pole rotation, and the combination screw rod and the screw connection structure of base pole, realized the flexible adjustment of surveying appearance height, at the same time, the situation of avoiding setting up the vertical pole to be too long to satisfy the high measurement demand is avoided with angle adjusting device, guarantees the surveying height while, effectively controlled the space required when receiving, make the accommodation box volume more reasonable, convenient for construction personnel to carry and remove, improved work efficiency, support device can effectively prevent the base pole from shaking or tilting during the measurement process, thereby ensuring the perpendicularity of the surveying instrument, improving the measurement accuracy.

This invention relates to the field of construction surveying and provides an environmental data measurement device for construction sites. The device includes a body, wheels, a cylinder, a omnidirectional robotic arm, a calibration box, a movable arm, and a detector. The cylinder is embedded in the body, and the omnidirectional robotic arm is connected to the piston rod of the cylinder. The calibration box is movably connected to the omnidirectional robotic arm. A level, a first power supply, and a laser emitter are connected to the calibration box. Air bubbles are pre-placed between the conductive liquid in the liquid chamber and the liquid chamber itself. A first conductive block and a second conductive block are embedded in the inner wall of the liquid chamber. An iron plate is rotatably connected to the inner wall of the trigger chamber, and the iron plate is connected to the inner wall of the trigger chamber via a first elastic element. Conductive particles and an electromagnet are fixedly mounted inside the trigger chamber. A motor cavity is formed in the bottom wall of the movable arm, and a first motor is fixedly mounted to the inner wall of the motor cavity. A receiving wheel is fixedly mounted to the rotor of the first motor, and a pull rope is fixedly mounted to the receiving wheel. One end of the pull rope is fixedly mounted to the detector. This invention enables the measurement of the depth of a foundation pit using a single device.

The utility model discloses a construction measuring device for municipal engineering, relates to the technical field of municipal engineering, and aims to solve the problems that an existing inclination measuring device in the prior art is large in size, heavy and inconvenient to carry by measuring personnel. A measuring plate is fixedly connected to the upper end of the horizontal plate, an angle scale is arranged at the upper end of the front end face of the measuring plate, a limiting pipe is fixedly connected to the middle of the measuring plate, a rotating shaft is rotationally connected into the limiting pipe, and the rear end of the rotating shaft extends out of the rear end of the limiting pipe and is fixedly connected with a vertical rod. The lower end of the rear end of the vertical rod is fixedly connected with a counterweight wafer, the upper end of the measuring plate is provided with a semicircular ring slot, the upper end of the front end of the vertical rod is fixedly connected with a connecting rod, and the front end of the connecting rod penetrates through the semicircular ring slot, extends out of the front end face of the measuring plate and is fixedly connected with a pointing piece.

This invention relates to the field of construction surveying technology, and more specifically, to a construction surveying device for prefabricated buildings. The device includes a fixing component for securing the device to a precast column; a positioning component for locating the precast column and precast pit positions is mounted on the fixing component; a coarse measuring component for measuring the coarse angle of the precast column is provided on one side of the positioning component, and an adjusting component for adjusting the angle is provided between the coarse measuring component and the fixing component; the coarse measuring component includes an installation component and a fine measuring component for measuring the fine angle of the precast column; a pressure-reducing component is provided on the coarse measuring component; and a marking component is provided on the coarse measuring component. This invention designs the coarse measuring component for rapid "alignment," while the fine measuring component provides stable and precise angle readings, with the two mutually verifying each other and reducing misjudgments.

The invention relates to the technical field of surveying and paying-off, in particular to a special-shaped glass curtain wall construction surveying and paying-off device which comprises a steel wire rope, a paying-off assembly used for accurate paying-off is arranged outside the steel wire rope, and a plurality of bending assemblies used for bending and paying-off are arranged outside the paying-off assembly. An adjusting assembly used for adjusting the bending angle is arranged on the surface of the bending assembly, fixing assemblies used for being fixed to a wall are arranged at the two ends of the paying-off assembly, the paying-off assembly comprises a rubber pipe, the rubber pipe is slidably connected to the surface of a steel wire rope in a sleeving mode, and fixing glue is injected from the upper end of the rubber pipe; the rubber pipe is filled with the fixing glue along the steel wire rope, then the sealing sleeve is sleeved on the opening in the upper end of the rubber pipe, the sealing sleeve is rotated to enable the through hole to correspond to the grouting hole, the bent rubber pipe is sequentially bent along the needed paying-off line at the moment, and the bending angle of the rubber pipe is fixed after the glue is solidified. And parameters such as the position, the size, the elevation and the axis of the building can be correctly determined.

The utility model relates to BIM construction surveying technical field, concretely is a kind of accurate measuring device of wisdom construction based on BIM technique, including base, the bottom of the base is fixedly installed with multiple supporting legs, the bottom of the supporting leg is provided with moving wheel, the top of the base is provided with three-dimensional surveying instrument, the side of the three-dimensional surveying instrument is installed with the BIM model data controller of electric connection, and the base is provided with stable support mechanism.The utility model is provided with stable support mechanism, relies on the adjusting support of multiple second hydraulic rod and support plate and the calibration of level, can make the whole base balanced to be placed under construction environment, and after relying on drill rod drilling into ground after placement is completed, the whole base can be effectively fixed, to prevent the three-dimensional surveying instrument on the base from appearing the condition of shaking in the process of measurement, avoid the influence to the result of measurement.

The invention relates to a surveying pole for building construction surveying, which comprises a supporting core body, a detachable sleeve shell is arranged outside the supporting core body, a plurality of bracket assemblies are arranged on the outer side of the bottom of the sleeve shell, the bracket assemblies are at least used for stably supporting the sleeve shell and the supporting core body, and a rotating outer ring is arranged at the top of the supporting core body. And a rotating inner ring is arranged in the rotating outer ring, a mounting seat is arranged at the center of the bottom of the rotating inner ring, and a suspended counterweight module is fixedly arranged at the bottom of the mounting seat. The rotating outer ring and the rotating inner ring are adopted, the mounting base can drive the rotating inner ring to rotate in the rotating outer ring, meanwhile, the rotating outer ring can rotate in the arc-shaped supporting rod, the principle of a gyroscope is utilized, the benchmark body is always in a vertical state, and even if the support assembly is not flatly placed on the ground, the benchmark body is not prone to falling off. And the quick vertical state of the marker post can be ensured, people are prevented from holding the marker post for a long time, and the measuring quality and effect are improved.

The utility model discloses a kind of construction surveying devices, including cross bar and multiple adjusting plates, the both sides of cross bar are equipped with recess, adjusting plate is respectively arranged in recess, strip mouth is equipped on adjusting plate, the inner wall surface of recess is equipped with locating block, locating block is inserted into strip mouth setting, electric push rod is installed between the one end of locating block and strip mouth away from cross bar, hand screw that adjusting plate is fixed on the outer side surface of locating block is installed, the outer side surface of hand screw is installed with level meter. The utility model is simple in structure, with the retraction of electric push rod upper piston rod, adjusting plate can be inwards to each other along locating block, and drive roller, make roller stick to wall rolling smooth movement, once the state of inclination of wall in the process of movement, adjusting plate can be inclined to left or right, and drive locating block and level meter, and through level meter can quickly understand whether vertical, increase the quality and comprehensiveness of measurement.

A kind of construction engineering measuring device, including tripod body and the measuring instrument body installed thereon, tripod body includes mounting plate and three support legs articulated therewith, support leg is telescopic, the lower part of support leg is provided with sliding slot along its length direction, sliding block is slidably connected in sliding slot, sliding block is fastened with support leg by first fastener, the inner side of sliding block is articulated with connecting plate, the end of connecting plate away from sliding block is articulated with counterweight plate;The lowest position that the lower end of connecting plate can reach is lower than the bottom surface of support leg movably connected therewith;The articulation of connecting plate and sliding block and the articulation of counterweight plate and connecting plate are all provided with damping structure.The utility model discloses by slidingly setting sliding block in the lower part of each support leg, and articulating connecting plate and counterweight plate on sliding block, staff can unfold and place counterweight plate on ground, by placing stone on the upper end surface of counterweight plate, effectively increase the contact area of device and ground and utilize counterweight moment to balance the overturning moment generated by upper measuring instrument.

The invention discloses an urban and rural planning construction surveying and mapping device, and relates to the technical field of construction surveying and mapping devices. The urban and rural planning construction surveying and mapping device comprises a supporting piece, a feeding unit fixedly installed on the supporting piece and a drawing unit fixedly installed on the feeding unit, and the drawing unit is fixedly connected with the supporting piece; the feeding unit comprises a feeding assembly fixedly installed on the supporting piece and a driving wheel rotationally installed on the supporting piece. According to the device, surveying and mapping paint is put into the feeding assembly, the surveying and mapping distance is directly determined through an extrusion piece ruler, a driving wheel can drive the self-adaption assembly and the linkage extrusion assembly to slide in the guide assembly by manually pushing a supporting piece, paint extraction and extrusion are automatically completed, ground measurement marking is synchronously achieved, cooperation of multiple persons is not needed, and the working efficiency is improved. By adjusting the height of the extrusion assembly, the marking length can be accurately controlled, and different measurement requirements can be met.

This application provides a construction surveying system for surface pipe piles, relating to the field of surveying equipment technology. The system includes an elevation measuring device comprising a reference pile, a first buoyancy component, a limiting component, and a first measuring component. The reference pile is positioned in the construction water area and has a first direction perpendicular to the horizontal direction. The first buoyancy component floats in the construction water area. The limiting component is connected to the reference pile and limits the first buoyancy component to a preset area. The first measuring component is positioned at a preset location on the reference pile and measures the distance between the first measuring component and the first buoyancy component located within the preset area in the first direction. The construction surveying system for surface pipe piles provided by this application can quickly obtain the water surface elevation, simplify the measurement process, reduce errors, and improve the accuracy of pipe pile elevation and construction efficiency.

The utility model relates to the field of building construction, and discloses a multifunctional measuring scale for building construction measurement, which comprises a connecting frame, a sliding groove is formed in the connecting frame, a sliding block is slidably connected in the sliding groove, a bidirectional threaded rod is in threaded connection in the sliding block, and a rotating assembly is fixedly connected to the periphery of the bidirectional threaded rod. The rotating assembly is used for driving the bidirectional threaded rod to rotate, a hinge block is fixedly connected to the top of the sliding block, a fixing clamp is hinged to the interior of the hinge block, and a measuring scale is clamped into the fixing clamp. According to the utility model, by arranging the two-way threaded rod, the sliding block, the fixing clamp and other structures, equal pressure is applied to the left end and the right end of the measuring scale, so that the measuring scale forms a continuous and uniform arc, an arc-shaped object can be conveniently measured or drawn, the use is relatively convenient, and the practicability is high. And the possibility and diversity of architectural design by a designer are improved.