Vertical laser range finder
The use of a vertical laser rangefinder to quickly and accurately detect the levelness of beam formwork solves the problems of time-consuming, labor-intensive, and inaccurate traditional methods, thereby improving construction quality and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA FIRST METALLURGICAL GROUP
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional methods for manually inspecting the levelness of beam formwork are time-consuming and labor-intensive, and the measurement accuracy is difficult to guarantee. Furthermore, errors are prone to occur in complex construction environments, affecting the safety of building structures.
A vertical laser rangefinder is used, and the parallelism of the horizontal plate is adjusted by multiple poles and adjusting screws. Combined with the laser rangefinder unit, the vertical distance from the bottom template of the beam to the ground is measured, providing fast and accurate beam levelness detection.
It improves the efficiency and accuracy of beam formwork inspection, ensures construction quality, reduces errors, and enhances the safety and construction efficiency of building structures.
Smart Images
Figure CN224152649U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this utility model belong to the field of beam detection technology, and more specifically, relate to a vertical laser rangefinder. Background Technology
[0002] In construction, beams are crucial structural components. If a beam structure sags to a certain extent, resulting in deflection, it will have multifaceted impacts on the building's structural performance. These impacts include decreased load-bearing capacity, reduced structural stability, loosening of connections, limited functionality, reduced aesthetics, increased maintenance and reinforcement costs, shortened building lifespan, and increased construction difficulty. Therefore, ensuring that the beam formwork used to support and fix the beam's shape is level before pouring concrete has a vital influence on the final building quality.
[0003] Traditional inspection methods often rely on manual measurement using tools such as spirit levels. These levels require calibration, and after calibration, the reference edge of the level is manually pressed against the beam formwork to determine its levelness. Furthermore, when measuring in confined spaces, different sized spirit levels are needed to meet space requirements. In scenarios with varying stairwell heights, even more tools are often required to construct an inspection platform, which is then manually accessed to measure the beam formwork's levelness.
[0004] This method of manual measurement is not only time-consuming and labor-intensive, but also often lacks accuracy in complex construction environments. Furthermore, it is highly dependent on the precision of the tools used; in harsh on-site conditions, spirit levels often fail to be detected, leading to significant measurement errors and seriously affecting the safety of the building structure. Therefore, there is an urgent need for an instrument that can efficiently and accurately detect the levelness of beam formwork to ensure that the structural performance of the beams meets design requirements after pouring, and to avoid various negative impacts caused by beam sagging. Utility Model Content
[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a vertical laser rangefinder. Multiple uprights are used to adjust the parallelism of the horizontal plate, and adjusting screws are used to adjust the length of the uprights, thereby achieving horizontal adjustment of the rangefinder body. The rangefinder body then measures the vertical distance between the bottom template of the beam and the ground, thus controlling the beam's levelness. This rapid leveling allows workers to quickly measure the beam's vertical height, saving preparation time and significantly increasing measurement efficiency, especially in situations requiring frequent and numerous measurements.
[0006] To achieve the above objectives, this utility model provides a vertical laser rangefinder, comprising: a rangefinder body and a horizontal disk;
[0007] The bottom of the horizontal plate is supported by multiple uprights, and the uprights are equipped with adjusting screws;
[0008] The bottom of the pole is divided into a fixed end and an adjustable end, wherein the fixed end and the adjustable end are connected by an adjusting screw;
[0009] The fixed end of the pole is hollow, with an opening at the top and a rotating ring. The rotating ring rotates at the top of the fixed end. The adjusting screw is connected to the rotating ring and rotates on the fixed end. The bottom end of the adjusting end is located in the fixed end, and its pole body is threaded, which is connected to the adjusting screw.
[0010] Furthermore, a rotating shaft is provided between the horizontal disc and the rangefinder body;
[0011] The rotating shaft is a cylindrical structure, with its bottom rotatably connected to the center of the horizontal disk, and the rangefinder body is fixed to the top of the rotating shaft.
[0012] Furthermore, a rotating base is provided at the center of the horizontal plate, and the rotating shaft is connected to the rotating base via a bearing.
[0013] Furthermore, the bottoms of multiple uprights are simultaneously mounted on the same base, and the top surface of the base is a plane.
[0014] Furthermore, a rotatable connection is provided between the top of the upright adjustment end and the horizontal plate;
[0015] The rotating connection is specifically a hinge connection or a universal joint connection.
[0016] Furthermore, the rangefinder body is a laser rangefinder, which includes four laser ranging units;
[0017] The four laser ranging units measure the height at both ends and the middle of the beam, as well as the length of the beam.
[0018] Furthermore, the rangefinder body has a built-in data processing module, which is connected to the laser ranging unit.
[0019] Furthermore, the rangefinder body is also equipped with a display and control buttons. The control buttons control the operation of the rangefinder body, and the display is connected to the data processing module and the laser ranging unit.
[0020] The data measured by the laser ranging unit is displayed on the screen, and the beam deflection calculated by the data processing module is also displayed on the screen.
[0021] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:
[0022] 1. This utility model's vertical laser rangefinder uses multiple uprights to adjust the parallelism of the horizontal plate. Adjusting screws are used to adjust the length of the uprights, thereby achieving horizontal adjustment of the rangefinder body. The rangefinder body then measures the vertical distance between the bottom template of the beam and the ground, thus controlling the beam's levelness. This device allows for rapid leveling, enabling workers to quickly measure the vertical height of the beam, saving preparation time. Especially in situations requiring frequent and numerous measurements, it greatly increases the efficiency of the workers.
[0023] 2. The vertical laser rangefinder of this utility model solves the error problem caused by manual operation in the traditional beam formwork horizontal state measurement method by setting up a laser rangefinder, improves the measurement accuracy and provides reliable data support for subsequent adjustments, ensuring construction precision and efficiency.
[0024] 3. The vertical laser rangefinder of this utility model has a simple design that is easy to carry and operate. It solves the problems of inconvenience, low efficiency and complicated preparation work of traditional measuring equipment in complex construction environments, improves work efficiency, shortens the preparation time before construction and adapts to complex and ever-changing construction environments.
[0025] 4. This utility model's vertical laser rangefinder, based on measurement data adjustment strategies and other technical means, solves the technical problems of large measurement errors, inconvenient equipment, and beam sagging affecting structural performance in traditional building construction beam formwork horizontal detection. It improves construction quality, optimizes the construction process, reduces costs, and has significant economic and social benefits. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of a vertical laser rangefinder according to an embodiment of the present invention.
[0027] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-display, 2-control button, 3-rotation axis, 4-leveling plate, 5-upright pole, 6-adjusting screw, 7-base, 8-foot support, 9-rangefinder body. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] This utility model provides a vertical laser rangefinder, including a rangefinder body 9, which is mounted on a horizontal plate 4. The bottom of the horizontal plate 4 is supported by uprights 5, and each upright is equipped with an adjusting screw 6. Multiple uprights 5 are located at the bottom of the horizontal plate 4, and their parallelism is adjusted to maintain the horizontality of the plate. The adjusting screw 6 is used to adjust the length of each upright, thereby achieving horizontal adjustment of the rangefinder body 9. The rangefinder body 9 then measures the vertical distance between the bottom template of the beam and the ground, thus controlling the beam's levelness. This device allows for rapid leveling, enabling operators to quickly measure the vertical height of the beam, saving preparation time. This significantly increases the efficiency of measurements, especially in situations requiring frequent and numerous measurements.
[0033] A rotating shaft 3 is also provided between the horizontal disk 4 and the rangefinder body 9. The rotating shaft 3 is preferably cylindrical, with its bottom rotatably connected to the center of the horizontal disk 4. The rangefinder body 9 is fixed to the top of the rotating shaft 3. The rotating shaft 3 drives the rangefinder body 9 to rotate on the horizontal disk 4, thereby adjusting the angle of the rangefinder body 9 and adjusting the direction of its measuring end to align with the direction of the beam to be measured, thus improving the accuracy of the device in measuring the vertical height of the beam.
[0034] It is understood that the rangefinder body 9 is preferably a laser rangefinder, whose measuring end emits a laser to measure the height of the template at both ends of the beam. It includes four laser ranging units, which measure the height at both ends and the middle of the beam, as well as the beam's length. To adjust for levelness, the two height values measured at both ends of the beam should be the same. If they are not the same, the height of the upright 5 needs to be further adjusted to achieve a level state. After ensuring parallelism, two values are obtained in the vertical direction: the height at both ends and the height at the middle of the beam. The difference between these two values is taken as the height difference. The distance between the two ends of the beam is also obtained in the horizontal direction. The beam deflection is then calculated using the height difference and the distance between the two ends, thereby assessing the degree of beam sag.
[0035] As a further preferred embodiment, a rotating base is provided at the center of the horizontal disk 4, and the rotating shaft 3 is connected to the rotating base through a bearing to realize the free rotation of the rangefinder body 9.
[0036] Multiple uprights 5 are mounted on the same base 7, the top surface of which is flat. The bottom of each upright 5 is divided into a fixed end and an adjusting end, connected by an adjusting screw 6. The bottom of the fixed end of the upright 5 is fixed to the top of the base 7. This fixed end is hollow, open at the top, and has a rotating ring that rotates at the top of the fixed end. The adjusting screw 6 is connected to this rotating ring and rotates on the fixed end. The bottom of the adjusting end is located within the fixed end, and its shaft is threaded, connecting to the adjusting screw 6 via this thread. When the adjusting screw 6 rotates, the adjusting end of the upright 5 moves up and down to adjust its height.
[0037] As a further preferred embodiment, since the tilt of the horizontal plate 4 changes when the height of a portion of the upright 5 is altered, and this change in tilt creates an angle between the horizontal plate 4 and the upright 5, a fixed connection cannot be used between them. To ensure an effective connection between the upright 5 and the horizontal plate 4, a rotatable connection is provided between the top of the adjusting end of the upright 5 and the horizontal plate 4, preferably a hinge connection or a universal joint connection.
[0038] The base 7 is also provided with a foot support 8 at its bottom, which supports the laser rangefinder.
[0039] The rangefinder body 9 has a built-in data processing module. The data processing module is connected to the laser ranging unit. After acquiring the data collected by the laser ranging unit, it performs calculations to obtain the deflection of the beam to be measured.
[0040] The rangefinder body 9 is also equipped with a display 1 and a control button 2. The control button 2 controls the operation of the rangefinder body 9. The display 1 is connected to the data processing module and the laser ranging unit. The data measured by the laser ranging unit is displayed on the display 1, and the beam deflection calculated by the data processing module is also displayed on the display 1. The operator only needs to use the display 1 to obtain the parallelism data of the beam to be measured.
[0041] To use, follow these steps:
[0042] Step 1: Select the beam structure to be tested, which is determined to have horizontal error through preliminary measurement.
[0043] Step 2: Adjust the level of the rangefinder body 9 and start the rangefinder body 9 to measure the parameters of the beam, including measuring the height of the middle and end of the beam structure to be tested and the length of the beam, determine its height difference and length, and obtain the corresponding measurement data.
[0044] Step 3: Assess the degree of sag of the beam member using the formula f = h / L, where f is the beam deflection, h is the height difference between the middle and end of the beam, and L is the span of the beam.
[0045] Step four: Based on the acquired data, conduct data analysis, and generate an adjustment strategy for the beam formwork based on the analysis results.
[0046] In step three, assuming the span l of the beam is 10 meters and the height difference h between the middle and the end of the beam is 5 centimeters, the deflection of the beam f = 0.05 / 10 = 0.005 radians.
[0047] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A vertical laser rangefinder, characterized by include: The rangefinder body (9) and the leveling disc (4); The bottom of the horizontal plate (4) is supported by multiple uprights (5), and the uprights (5) are equipped with adjusting screws (6); The bottom of the pole (5) is divided into a fixed end and an adjusting end, wherein the fixed end and the adjusting end are connected by an adjusting screw (6); The fixed end of the pole (5) is hollow, with an opening at the top and a rotating ring. The rotating ring rotates at the top of the fixed end. The adjusting screw (6) is connected to the rotating ring and rotates on its fixed end. The bottom end of the adjusting end is located in the fixed end, and its pole body is threaded, which is connected to the adjusting screw (6) through the thread.
2. A vertical laser rangefinder according to claim 1, characterized in that A rotating shaft (3) is also provided between the horizontal disk (4) and the rangefinder body (9); The rotating shaft (3) is a cylindrical structure, and its bottom is rotatably connected to the center of the horizontal disk (4). The rangefinder body (9) is fixed to the top of the rotating shaft (3).
3. A vertical laser rangefinder according to claim 2, wherein A rotating base is provided at the center of the horizontal plate (4), and the rotating shaft (3) is connected to the rotating base by a bearing.
4. A vertical laser rangefinder according to any one of claims 1-3, characterized in that The bottoms of multiple uprights (5) are simultaneously located on the same base (7), and the top surface of the base (7) is a plane.
5. A vertical laser rangefinder according to any one of claims 1-3, characterized in that A rotatable connection is provided between the top of the adjusting end of the upright (5) and the horizontal plate (4); The rotating connection is specifically a hinge connection or a universal joint connection.
6. A vertical laser rangefinder according to any one of claims 1-3, characterized in that The rangefinder body (9) is a laser rangefinder, which includes four laser ranging units; The four laser ranging units measure the height at both ends and the middle of the beam, as well as the length of the beam.
7. A vertical laser rangefinder according to claim 6, wherein The rangefinder body (9) has a built-in data processing module, which is connected to the laser ranging unit.
8. A vertical laser rangefinder according to claim 7, wherein The rangefinder body (9) is also provided with a display (1) and a control button (2). The control button (2) controls the operation of the rangefinder body (9). The display (1) is connected to the data processing module and the laser ranging unit. The data measured by the laser ranging unit is displayed on the display (1), and the beam deflection calculated by the data processing module is also displayed on the display (1).