113 results about "Level staff" patented technology

The invention relates to a motorway soft soil roadbed settlement observation cable device which mainly comprises a settlement plate, a flexible observation cable, a settlement ruler, a balance level and a leveling rod, wherein the balance level and the leveling rod are used for observation. The settlement plate is connected with the settlement ruler through the flexible observation cable. The balance level is arranged between the settlement ruler and the leveling rod and used for measuring and reading scales on the settlement ruler and calculating the foundation settlement quantity of the position of the settlement plate. The motorway soft soil roadbed settlement observation cable device is simple in structure and convenient to use. The observation cable has the specific flexible character so that a rolling machine can directly roll over the observation cable when an embankment is filled. The problem that a traditional rigid measuring rod observation device is prone to damage in construction is solved. Meanwhile, repeated filling and digging of the road surface near a measuring rod is reduced. The sufficiently-long flexible observation cable can be directly cut out, the part, exposed out of the road surface, of the observation cable is directly coiled in situ, welding is not needed and construction difficulty and work loads are reduced. The motorway soft soil roadbed settlement observation cable device is low in manufacturing cost and capable of obviously saving monitoring cost.

The invention discloses a measurement method for measuring the elevation and flatness of a concrete surface. The method comprises the following steps: freely setting up a station by using a total station, thereby obtaining a three-dimensional coordinate of the set station; performing real-time tracking measurement on a prism on a measurement frame, and acquiring a three-dimensional coordinate of a central point of the prism on the measurement frame; by utilizing an ultrasonic measurement element mounted on the measurement frame, acquiring the actual three-dimensional coordinates of any position of the concrete surface, wherein the three-dimensional coordinates comprise plane coordinates and elevation of a certain position on a to-be-detected concrete surface; transmitting the data observed by the total station in real time and the data measured by ultrasonic waves to a data computer in real time; and realizing batch computing of the measured design plane coordinates and elevation of the concrete surface. The problems that elevation measurement difficulty is caused and whether the flatness on the concrete top surface meets the standard inspection requirement cannot be detected in the construction process in real time because a leveling rod is inconveniently directly arranged on the concrete surface in the concrete construction process in a leveling method are solved, and the method disclosed by the invention has the characteristics of rapidness, accuracy, intelligence and high efficiency. Moreover, the construction quality is guaranteed, and the working efficiency is improved.

The invention relates to a digital levelling system, a method, a composite coding levelling staff and a production method thereof. The composite coding levelling staff is provided with a fine coding area and a reading area on the surface thereof, wherein the fine coding area is provided with indicating circles with equal interval and same size and arranged in single row, and locations of the centers of the indicating circles to the bottom of the levelling staff can be calculated from the reading area arranged correspondingly. According to invention, the above arrangement is simple in structure and easy to realize. During the production technology, by using a template duplicating form to produce the composite coding levelling staff, each levelling staff has a high degree of consistency, so that a high-precision reading can be ensured by calibrating the template with high precision and correcting with a mathematics model, and production technology is simplified and cost is reduced at the same time. The instrument system can meet levelling standards of national first and second grades. A high-precision indium steel rule uses an indium steel band as a base steel, and can achieve a resolution of 0.01 mm through cooperating with a high-resolution area array CCD, thereby greatly improving measure precision.

The invention discloses a support, and aims to provide a portable leveling rod support which is simple in structure and convenient to operate and improves the measurement accuracy and the measurement speed. The portable leveling rod support disclosed by the invention comprises a frame-structured fixed rack (1) and a telescopic support (2) fixedly connected with the fixed rack (1), wherein the left and right sides of the fixed rack (1) are respectively provided with a fastening device, and a leveling rod (3) is arranged in an inner frame of the fixed rack (1) through the fastening devices, so that the leveling rod (3) can be vertically erected and keeps stable, thereby reducing the working difficulty of the measurement personnel, avoiding measurement errors caused by wind effect or manual support, and improving the measurement accuracy and the measurement speed. The support disclosed by the invention is applied to the field of leveling rod supports.

The invention discloses a paired type observing ruler and gauge combined composite leveling instrument; the composite leveling instrument is provided with a column-shaped ruler body (1) and a level (6), wherein a leveling staff (2) and an observing unit (3) are fixed on the same column surface of the column-shaped ruler body (1); the leveling staff (2) is parallel to the axis of the column-shaped ruler body (1); the observing unit (3) can slide up and down; the observing unit (3) is provided with an opposite side height signal detector (4) and a home height signal detector (5), which are fixedly connected with each other; and a collimation axis of the opposite side height signal detector (4) is vertical to the axis of the column-shaped ruler body (1). Point-to-point direct leveling is truly realized; point selection and point arrangement are not limited by terrain environments; and leveling can be conveniently carried out in complicated geographic conditions, such as abrupt slopes, ditches, rivers, mountainous areas and so on.

The invention provides a large-area ultra-soft foundation settlement monitoring device and method. The device comprises a recovery peg, a settlement plate and a leveling rod. The settlement plate is placed on a foundation surface layer to be measured. The leveling rod is fixed to the settlement plate. The face which is provided with scales of the leveling rod faces towards the recovery peg. The elevation of the top of the recovery peg is higher than a bottom scale mark of the leveling rod. Scale changes of the leveling rod are measured and read through an observation instrument erected on the recovery peg so as to obtain the settlement amount of the foundation surface layer. The device has the advantages of simple structure, convenient operation, high measuring precision and the like, and manual rod support and station moving are not needed, so that the labor cost is greatly lowered, the working efficiency is improved, and the device has high application value.

The invention is suitable for leveling survey in topography, and relates to an automatic smoothening leveling ruler. The leveling ruler is composed of parts such as a ruler body (1), a circular level (2), a camera (3), a maincenter control center (4), a transmission system (5), a rotation shaft (6) and a ruler pad (7). According to the invention, the circular level (2) can exactly measure a perpendicular condition of the leveling ruler, the camera (3) positioned above the circular level (2) can continually shoot the positions of air bubbles and send the shot photos to the maincenter control center (4) through a transfer system for judgment so as to send out corresponding instructions; and the rotation shaft (6) is adjusted according to the instruction, the position change of the air bubbles of the circular level (2) is introduced until the photos sent back by the camera (3) show that the air bubbles are in the center, and then the leveling ruler is perpendicular. The leveling ruler strengthens the perpendicular precision of the leveling ruler, the perpendicularity of a standing ruler is guaranteed, a measuring error is reduced, and meanwhile, the operation is simpler.

The invention discloses a zero reading level measurement method and an accurate adjustment structure for the height of a leveling instrument; the zero reading level measurement method is characterized by comprising the following steps of: in a measurement process, respectively erecting the leveling instrument and a rearview leveling staff at places which are equal to the elevation of the top surface of a measured constructional element; adjusting the height of the leveling instrument so that the top surface of the measured constructional element is flush with the height of a level mark silk thread in the leveling instrument; maintaining the height of the adjusted leveling instrument, defining the position of the corresponding height of the level mark silk thread in the leveling instrument on a rearview leveling staff as a viewpoint A; and measuring the elevation of the rearview point A on the rearview leveling staff by using a known leveling point B, wherein the elevation of the rearview point A is the elevation of the top surface of the measured constructional element. A fore-view leveling staff is not needed to be erected on the top surface of the measured constructional element, thereby being very effective for avoiding the difficulty and insecurity caused by ascending of levellers.

The invention relates to the technical field of levelling staffs, in particular to a telescopic brace rod connecting device of a levelling staff. The device is characterized in that a male/female back-drawing fastener (1) is arranged in the middle of the levelling staff; a hole is formed on the male/female back-drawing fastener (1) and movably connected with a connector (2) of the telescopic brace rod; the connector (2) is penetrated in a socket body (4) through a bolt (3) and then fixed with a nut (6) through a gasket (5); a groove is formed from the middle of the bottom to the right side wall of the bolt (3); a movable universal shaft is arranged in the groove; another telescopic brace rod is arranged on the universal shaft; and the two brace rods are stretched to the ground with an angle of about 45 degrees respectively, and forming a triangular support with the vertical levelling staff. Compared with the prior art, the connecting device has the advantages of simple and novel structure, convenient, safe and reliable use and easy assembly and disassembly; moreover, as absolute stability of the levelling staff can be kept during measurement, the connecting device fills the blank that no assistant support device is available to the levelling staff in the measurement industry.

The invention provides a double-side leveling ruler, which comprises a ruler body, wherein the ruler body comprises a first bar code leveling surface and a second bar code leveling surface arranged inthe length direction; the first bar code leveling surface and the second bar code leveling surface are respectively positioned at the two sides of the ruler body width direction; the ruler body can be used for simultaneously performing twice height measurement respectively through the first bar code leveling surface and the second bar code leveling surface arranged in the length direction; the first bar code leveling surface and the second bar code leveling surface are positioned at the two sides of the width direction of the ruler body; the two groups of measuring data can be obtained at thesame time; the observation times can be increased; through the processing on the two groups of height measuring results, the observation precision is improved; the error accumulation is avoided; themeasurement accuracy is improved.

The invention discloses an excavation face bottom settlement deformation monitoring device and a use method thereof. The upper end of a sleeve is provided with a protective cover, the lower end of the sleeve is filled with a filling material, a plurality of aluminum rods connected by aluminum rod joints are arranged in the sleeve, one end of the aluminum rod is connected to a head of the monitoring device, the head 1 of the monitoring device passes through the filling material and extends out of the sleeve, the end of a leveling rod is provided with a joint connected to the other end of the aluminum rod, the end of the leveling rod is connected to the leveling rod, and a level bubble device is installed on the aluminum rod close to the excavation face. The device solves the problem that the excavation face bottom settles in the case of no slope making and excavation, accurately measures the settlement amount of an excavation bottom face and an excavation bottom face settlement change rate and provides important reference base for judging the safety situation of excavation.

The invention discloses an elevation measurement method and system. The method comprises the steps that the elevation of a first-layer known point is acquired; the elevation line distance from the center of a total station to the elevation of the first-layer known point is acquired through the total station; a through hole is formed in the vertical direction from the first layer to a layer to be measured in a penetrating mode, a prism head is arranged at the through hole of the layer to be measured, a telescope of the total station vertically points to the prism head and coincides with the center of the prism head, and the total station is operated to measure the distance and obtain the distance; a conversion device provided with the prism head has an identification elevation, and an identification point distance constant K from the prism head to the identification elevation is measured; a level gauge is installed on the layer to be measured, and a first leveling rod is erected at the top of the elevation mark Hi of the conversion device; and a second leveling rod is erected at the elevation Hb of the guide measurement point of the to-be-measured layer. According to the method, the zenith distance function of the total station is utilized, the first-layer elevation datum point is guided to be measured to the conversion device of the elevation of the layer to be measured through the first-layer elevation datum point, and then the elevation on the conversion device is guided to be measured to the layer to be measured through the level gauge.