177 results about "Plumb bob" patented technology

A multi-function layout square of modular construction having a laser that is capable of performing multiple functions is disclosed. The multi-function square has a metallic outer casing with magnetic properties, with a protractor plate slidably, pivotally, and removably attached by thumbscrews to the casing that can be moved and rotated with respect to the casing and slid linearly along a portion of the length of the casing. When the protractor plate is removed the casing may be used as a level, a plumb bob, a ruler, and a compass. When the protractor plate is attached the tool may be used as a framing square, roofing framing square or rafter square, and a gauge or scribe for straight lines, arcs, or circles. The laser, a switch, and a pair of bubble level vials are contained in a module installed at one end of the casing, and a second module containing batteries is removably installed at the other end of the casing. Each module has electrical contacts that engage the interior surface of the casing and contacts that engage the batteries when the modules are installed and abutted. When the switch is on, a circuit is completed through the metallic casing, which electrically connects the batteries to the laser. The casing may be suspended vertically from a support surface by passing a string or wire through a bore in one of the thumbscrews, may be mounted on a tripod, or may be magnetically attached to metal objects.

A device to speed golf play by accurately and quickly measuring distances a golf ball lies from a turnable flagstick (20 FIG. 1A, mozat part of invention) containing two similar bodies (10 and 11 FIGS. 1 and 2) wrapped centrally around said flagstick with a 90 degree rotational measuring arm (22 FIG. 5) held in a slot (15 FIG. 2A) by a pin (14 FIG. 2) with a plumb bob (29 FIG. 5) at one end pointing downward from a numbered position to pinpoint the exact distance toward said turnable flagstick within which measure a putted golf ball must lie for the next putt to be counted and conceded so that the ball may be picked up without putting. When not in use, a gripping device (23 FIG. 5) at the outer end of arm (22 FIG. 5) will hold said arm (22 FIG. 5) to flagstick (20 FIG. 1A) when rotated 45 degrees upward.

The invention provides a steel structure building verticality detection device, which belongs to the technical field of mechanical equipment installation and measurement assistant equipment. The steelstructure building verticality detection device comprises a boom and detection equipment, wherein the boom is provided with a plumb bob and a suspension wire, the plumb bob is connected with the boomthrough the suspension wire, and the detection equipment slides vertically along a detected object to detect the distance between the suspension wire and the detected object; a V-shaped block is arranged on the detection device, the opening side of the V-shaped block faces the side of the detected object, and the detection equipment is clamped on the detected object through the opening and slidesvertically along the detected object. When the steel structure building verticality detection device is used, a technician can attach the opening of the V-shaped block to the side wall of the cylindrical detected object, the V-shaped block moves along the axial direction of the detected object, the deviation of the detection equipment during a vertical movement process can be avoided, and the detected cylindrical detected object data by the steel structure building verticality detection device are more accurate.

The invention discloses a monocular vision-based gravitational field method accelerometer calibration method, which mainly comprises the following steps of: proposing a plumb bob method to determine the direction of a gravitational field, and then using a plumb line as an initial reference of a rotation angle of a turntable; using a monocular vision system to shoot a rotary table image, and usinga template matching method to determine a rectangular target feature area in the rotary table image; realizing sub-pixel extraction of the characteristic edge of the rectangular target based on a Zernike moment method; extracting a long edge of the rectangular target by using a cumulative probability Hough Transform (PPHT) algorithm, wherein an included angle between the edge and a plumb line is the rotation angle of the rotary table at the current position; the sensitivity of the accelerometer is calculated by using the measured rotation angle, and the gravitational field method accelerometercalibration at any rotation angle can be realized. According to the method, the defects of limited calibration precision and installation error in multi-axis acceleration timing calibration in the traditional gravitational field method accelerometer calibration are overcome.

The invention discloses a perpendicularity measuring device which comprises a holding platform and a plumb bob. The perpendicularity measuring device is characterized in that a plumb bob preformed opening is formed in the holding platform; the top of the plumb bob is fixed and vertically penetrates through the plumb bob preformed opening; two light sources are arranged on the holding platform; the light emitting directions of the light sources face to the plumb bob preformed opening and are perpendicular to each other; scale plates are arranged on opposite sides of the light emitting directions of the light sources; the plumb bob is positioned between the light sources and the scale plates; horizontal scales are arranged on the scale plates; scales on the two scale plates are positioned on a same horizontal plane; the holding plate is connected on the machine head of a tower body and moves up and down along with the machine head along a guide track; the projection scale values of the plumb bob on the scale plates are measured so as to test the perpendicularity of the tower body. By adopting the perpendicularity measuring device disclosed by the invention, the problem that relatively large read errors can be caused as the plumb bob is shaken when a conventional method is adopted to measure is solved, the measurement result precision is effectively improved, and the quality of deposit products is improved.

The invention discloses a stable type three-dimensional pile hole detector which comprises a measuring and controlling computer, a numerical control winch, a stabilizing plate and a winch frame arranged on the top of a pile hole. At least three hanging ropes are arranged on the numerical control winch, and led into the pile hole through a plumb bob after passing by the winch frame. The free ends of all the hanging ropes are connected with the stabilizing plate. A stability increasing pan-tilt is connected with the lower side of the stabilizing plate. A three-dimensional laser scanner is installed on the stability increasing pan-tilt. The measuring and controlling computer is connected with the numerical control winch, the stability increasing pan-tilt and the three-dimensional laser scanner through cables. By means of the detector, all-directional three-dimensional scanning can be conducted on the wall of the pile hole, data collected by the detector is sufficient and stable, the diameter and perpendicularity of the pile hole can be well reflected, use is convenient, and detecting efficiency is high.

The invention discloses a high pole plumb bob. The high pole plumb bob comprises a rope-type part, a bob head and a pole body. The pole body comprises a longitudinal part, a first transverse part and a second transverse part. The first transverse part is perpendicularly and fixedly connected to one end of the longitudinal part. The second transverse part is perpendicularly and fixedly connected to the middle of the longitudinal part. A through hole is formed in the first transverse part. The longitudinal part is further fixedly connected with a rope winding device, a rope arranging part and a pulley assembly. One end of the rope-type part is fixedly connected to the rope winding device, and the other end of the rope-type part is fixedly connected with the bob head. The portion, located between the wire winding device and the bob head, of the rope-type part sequentially passes through the rope arranging part, the pulley assembly and the through hole of the first transverse part. The end of the first transverse part and the end of the second transverse part are each provided with a magnet. The high pole plumb bob is easy to operate and convenient to use; when the high pole plumb bob is used, consumed labor is less, and required time is short; potential safety hazards of aerial work in a production site are avoided, and production efficiency is effectively improved.

A construction-use plumb bob structure comprised of a blunt top, pointed bottom conical body having a thread-fastened sharp tip and a cord conjoining component respectively installed at its upper and lower extremities, wherein a recessed cavity formed in the internal section of the body ensconces a filler material of similar shape, the external threads died along its lower extent of a dish-shaped attachment unit are fastened to the internal threads tapped along the upper extent of the recessed cavity, and a threaded section at the bottom end of a narrow gauge cord is fastened into the internal threads in the attachment unit. As such, since a filler material of different composition is ensconced inside the body, the present invention weighs the same as an originally solid plumb bob such that there are no differences during utilization. Furthermore, the invention herein achieves the objective of reducing production cost.

The invention discloses a height measuring device and method of a hydraulic bracket. The height measuring device comprises a stepping motor, a shaft encoder, a height-measuring pull rope, a plumb bob,a tensioning sensor, a microcontroller, a fast-plugging communication port and the like. The height measuring device and method disclosed by the invention have the beneficial effects that when the height is measured, the microcontroller drives the stepping motor to control the winding and unwinding degree of the height-measuring pull rope under the action of gravity of the plumb bob, simultaneously the tensioning sensor monitors the tensioning force of the height-measuring pull rope, and judges that the plumb bob is contacted with a bracket base when detecting the change of the tensioning force; the microcontroller calculates the unwinding length according to the rotating angle fed back from the shaft encoder so as to obtain the measured height of the hydraulic bracket.

The invention provides a contraction positioning support for determining the center position of a pile foundation. The contraction positioning support is arranged in a pile opening of the pile foundation and comprises a center base plate located in the middle portion of the pile opening, and a plurality of telescopic arms located in the different directions and horizontally arranged, and a plumb bob is hung in the center position of the center base plate. Each telescopic arm comprises a first connecting end and a second connecting end. The first connecting ends of the telescopic arms are connected to the center base plate, and the second connecting ends of the telescopic arms are connected to the pile opening. The problem about how to determine the positions of the pile centers of pile foundations with different pile diameters through the same positioning structure is solved, and the positioning construction accuracy and efficiency are further improved.

The invention belongs to a track panel coarse adjustment method, and particularly relates to a novel double-block type track panel coarse adjustment method. The method solves the problems that the center line of a double-block type ballastless track construction coarse adjustment line is accurately marked and is unlikely to be observed and the requirements for light rays and construction personnel quality are high; a track panel is coarsely adjusted, so that the problems that the center line of the line is unclearly and inaccurately marked in existing track panel method construction, time and labor are wasted for hanging a plumb bob and the plumb bob is unlikely to be observed. The arrangement and coarse adjustment of the track panel are merged into one working procedure, and the precision in the track panel arrangement period can reach the precision after coarse adjustment, so that the coarse adjustment working procedure is reduced, and the time used for coarse adjustment is reduced.

The invention provides a hand-operated plumb bob device. The hand-operated plumb bob device comprises a plumb bob, wherein a measuring disc is arranged on the plumb bob; a testing rope is connected above the plumb bob; the other end of the testing rope is wound on a rotating shaft after passing through a limiter; and one end of the rotating shaft is connected with a handle. The hand-operated plumb bob device further comprises a rotating shaft locking unit used for limiting the rotation of the rotating shaft. Through the adoption of the hand-operated plumb bob device provided by the invention, problems in the prior art are solved. The hand-operated plumb bob device provided by the invention is advantaged in that the device is simply structured and convenient in operation; the device is not limited by weathers; the observation continuity of the device is high; the construction speed of a slip form is increased; the device is mounted and fixed at one time; manual operations are less; the observation accuracy of the device is improved; frequent high-altitude operations are reduced; and the observation safety of the device is enhanced.

The invention relates to a wall column template verticality detection ruler. According to the invention, the detection ruler is in an inverted-L shape, and comprises a handle, a running rule and a plumb bob, the handle is made by an aluminum alloy square pipe, the length is greater than or equal to 2 m; the running rule is made by the aluminum alloy square pipe, the length is greater than or equal to 0.3 m; one end of the running rule and one end of the handle are mutually connected through a connection part in a flattening mode, so that the handle is perpendicular to the running rule; the connection part is clamped through the backing plates (5) arranged outside of the handle and the running rule, the backing plates are fastened by a hexagonal bolt (6); one end of the plumb bob is fixed at a connection part of the handle and the running rule, and the other end sags at one side of the handle by using a suspension wire and the plumb bob. The detection ruler has the advantages of simple structure, convenient making, strong applicability of the detection ruler, and obvious usage effect, and can effectively control the verticality of a wall column template and can accelerate the engineering construction speed of the wall column template.

The invention discloses a plumb bob device for building construction measurement, which comprises a frame body, a winding mechanism, a shell, a limiting mechanism and a fixing mechanism, the winding mechanism is installed inside the frame body, and the shell is installed at the bottom of the frame body. The winding mechanism and the limiting mechanism are matched with each other, a handle drives adrum to rotate by rotating a rotating shaft, so that a pendant rope is wound on the surface of the drum, a pendant head is accommodated in the shell; then a limiting cover is rotated through a knob,the pendant head is limited by the limiting sleeve, a plumb bob is convenient to store; transportation and carrying processes are relatively convenient; meanwhile, during perpendicularity measurement,through mutual cooperation of a baffle and a fixing plate in the fixing mechanism, the distance between the baffle and the fixing plate can be adjusted according to the thickness of the wall, the plumb bob can be fixed conveniently, and compared with the mode that the plumb bob is held by hand for measurement, the measurement precision of the plumb bob is improved, and great convenience is brought to construction work.

A monitoring system (100) monitors displacement of a wind turbine tower and includes at least one plumb bob with an upper part and a lower part, each plumb bob being configured to be pivotally suspended at its upper part, via a suspension device, from a point above so as to attain a rest position in a rest situation, and each said plumb bob has one or more sensing surfaces (12, 12′). One or more suspension devices means (10) suspend the at least one plumb bob. Two or more sensors (14, 14′, 14″), each being configured to sense, in a specific sensing direction (16, 16′, 16″), a distance to a plumb bob, provide displacement data. At least two of the two or more sensors (14, 14′, 14″) are arranged in a sensing vicinity of a plumb bob, with at least two of the specific sensing directions (16, 16′, 16″) not being parallel to each other. The monitoring system includes a control unit (18) configured to receive the displacement data from two or more of the sensors, and a device for reporting, to an external unit (20), parameter(s) representing displacement of a wind turbine tower.

The invention relates to a device capable of measuring the opening angle of a vehicle door simply and conveniently, and belongs to the technical field of angle measurement. The device comprises two vacuum sucking disc, two plumbs, a dial pedestal, and a pointer. Each vacuum sucking disc comprises a sucking disc and a sucking disc hoop. Each plumb comprises a plumb line and a plumb block, and the front end of the plumb line is tied on the corresponding sucking disc hoop. The dial pedestal comprises a positioning straight rule and an angle disc, and an end part of the positioning straight rule is provided with a rotating shaft. An end part of the pointer is provided with a rotating shaft groove, and the pointer is disposed on the rotating shaft of the positioning straight rule, thereby enabling the pointer to be able to rotate around the rotating shaft on the positioning straight rule. The device can save a calculation process, reduces the measurement error, and can achieve the direct reading of the opening angle of the vehicle door.

The invention provides a pile hole perpendicularity detection tool and a using method thereof. The pile hole perpendicularity detection tool comprises a first clamping ring, a second clamping ring anda plumb bob assembly. The first clamping ring and the second clamping ring are coaxially arranged; the first clamping ring and the second clamping ring are fixedly connected through a connecting rod,and the first clamping ring and the second clamping ring are parallel to each other; the first clamping ring is provided with a first sliding way, and the second clamping ring is provided with a second sliding way. The plumb bob assembly penetrates through the first slide way and the second slide way in the vertical direction and can slide on the first slide way and the second slide way. According to the scheme provided by the invention, a traditional quality inspection method is changed, the verticality of the compaction pile hole is detected by adopting a special detection tool, the detection accuracy and the detection efficiency are greatly improved, the construction progress is accelerated, and the method can be widely applied to verticality measurement in engineering construction.

The invention provides a device and method for measuring the gradient of an edge slope by a fishing rod type gradient ruler from an opening line position of the edge slope. The device comprises the fishing rod type gradient ruler and the like. The method comprises the following steps: (1) selecting a measurement position: selecting the measurement position from the upper side where the gradient of the edge slope needs to be measured; (2) retracting the fishing rod type gradient ruler: according to the size of the edge slope needing to be measured, retracting a fishing rod of the fishing rod type gradient ruler to enable a perpendicular line of the end part to reach a position needing to be measured, and hanging a plumb bob at the bottom of the perpendicular line; (3) leveling: adjusting a retractable rod of the fishing rod type gradient ruler to be leveled through horizontal air bubbles on the retractable rod of the fishing rod type gradient ruler; (4) reading: reading a length L for which the fishing rod type gradient ruler stretches out of an opening line of the edge slope and a height H from the perpendicular line of the end part of the fishing rod to the bottom edge of the edge slope; and (5) calculating: according to a gradient calculation formula i=H/L*100%, calculating the edge slope gradient i of the measured position of the fishing rod type gradient ruler. The device and the method are simple in process and convenient to operate; and the fishing rod only needs to be stretched out and leveled, and reading and calculation are carried out to finish the measurement of the gradient of the edge slope.

The invention discloses a plumb bob for verticality detection in building construction. The plumb bob for verticality detection in building construction comprises a shell, an oil conveying pipeline and a plumb bob, the left side of the lower end of the shell is connected with an oil valve, a sliding plate is arranged at the middle part of the shell, a non-slip mat is distributed on the inner sideof the sliding plate, a mounting nail is inserted to the right side of the upper end of the shell, a roller is mounted in the shell, a locking block is inlaid in the outer side of the roller, a sliding block is fixed at the upper part of the left side of the blocking block, the oil conveying pipeline goes through the internal of the oil valve, the lower end of the shell is connected with a wire outlet, a connecting wire is distributed at the lower end of the wire outlet, a connecting ring is inlaid in the tail end of the connecting wire, and a fixing column is fixed at the bottom end of the connecting ring. The plumb bob for verticality detection in building construction is provided with the shell, and the outer periphery of the shell has an arc-shaped structure, so when a user holds the shell, damages of scratches of user's hands to the user are prevented; and the user places the plumb bob at the left side of the shell, so the plumb bob can be conveniently carried by the user.

A pointed tool and sheath combination allow for use of the tool as a string line anchor and/or as a plumb bob and provide safe storage of the tool when not in use. The preferred tool is comprised of a dart-like body having a longitudinal axial bore, and a sharpened spike clamped within the longitudinal bore. Sheaths are provided that with snap-in installation of the tool down past curved, inwardly-protruding walls of the sheath, or of the tool into engagement with a latching arm that cooperates with a recess or other latching surface on the tool.

The application relates to the technical field of verticality measuring devices, in particular to a verticality measuring device and a verticality control system. The verticality measuring device comprises a fixed part, a plumb, a windproof box and an observation mirror, wherein the plumb comprises a suspension line and a plumb bob; one end of the suspension line is connected with the plumb bob; the fixed part is connected with a to-be-tested object and the other end of the suspension line, so that the plumb bob droops along the gravity direction; the windproof box is connected with the to-be-tested object; the plumb bob is positioned in the windproof box; the observation mirror is connected with the windproof box. According to the application, the technical problems that a mode of observing the verticality with naked eyes easily causes greater deviation, and weather conditions have influence on observation effect to further lead to inaccurate verticality measurement are solved.

The invention relates to a trackless accurate measurement method for the position of a contact network suspension point in a subway tunnel, and the method comprises the steps: determining the coordinate of each positioning point, marking the positioning points on the tunnel ground in the tunnel to form a mark of a line center on the tunnel ground, and projecting a plumb bob of a line center marking point on the tunnel ground on the top surface of the tunnel; and calculating the offset through a formula, and enabling the offset to be expressed in an arc length form. The superelevation of different positioning points and mileage and the offset of the projection of the center of the pantograph on the top surface of the tunnel are calculated through a program, and the program is combined withan Excel table. During construction, a positioning point and mileage are directly input into the table, the corresponding offset of the projection of the center of the pantograph on the top surface ofthe tunnel relative to the center of a line can be obtained, the projection position of the center of the pantograph on the top surface of the tunnel at a curve section can be obtained by measuring the arc length, and after the projection position is obtained, punching can be carried out according to the position of the point and the punching die.