Prefabricated concrete building vertical detection device

Abstract

The utility model discloses a kind of assembled concrete building vertical detection devices, belong to wall detection technical field, including ruler body, horizontal reference device and laser measuring device, first mounting plate and second mounting plate are respectively vertically fixed in the top and bottom of the ruler body, and the first mounting plate and second mounting plate are mutually parallel;Horizontal reference device is set on the first mounting plate;Laser measuring device is set on the second mounting plate, including a laser transmitter and a scale plate, the optical axis of the laser transmitter is perpendicular to ruler body and is set towards reflecting element. The assembled concrete building vertical detection device, by the multiple amplification of tiny physical deviation, so that naked eye can easily identify the tiny inclination originally difficult to detect, improve the measuring sensitivity and resolution accuracy of device.

Description

Technical Field

[0001] This utility model belongs to the field of wall inspection technology, and in particular relates to a vertical inspection device for prefabricated concrete buildings. Background Technology

[0002] In the construction and acceptance of prefabricated concrete buildings, rapid and accurate detection of wall verticality is a crucial step in ensuring project quality and safety. Currently, there are two main types of commonly used on-site detection methods:

[0003] The first type is the traditional plumb bob test ruler. This method relies on a suspended plumb line as a gravity reference, and the perpendicularity is determined by visually observing the relative position of the plumb line and the scale on the ruler. The inherent drawback of this method is that its reference (plumb line) is flexible and easily sways in slightly windy conditions. This not only requires waiting for it to stabilize, extending the testing time, but also requires a sufficiently long ruler (typically two meters) to improve reading accuracy. Because of its excessive length, operation is difficult, and even with slight inclination, measurement accuracy is still difficult to guarantee.

[0004] The second category is the laser level-based inspection method. While this method avoids the problem of plumb line wobbling, it introduces new technical challenges. Laser levels typically project a vertical laser line onto the wall, and inspectors must judge verticality by observing the deviation between the entire laser line and the wall edge. This method suffers from a serious problem of field applicability: the laser line is poorly visible in bright ambient light (such as outdoors or in well-lit indoor environments), making it difficult to clearly identify, which greatly limits its application scenarios and efficiency. Furthermore, observing the entire line rather than a single point increases the difficulty of focusing and judgment, easily leading to visual fatigue and subjective errors.

[0005] To address this issue, we propose a vertical inspection device for prefabricated concrete buildings. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing verticality testing technologies, whether traditional mechanical or modern laser-based, which restrict their application in the field: either the reference is unstable, or the readings are not intuitive and are greatly affected by ambient light. Therefore, this invention proposes a verticality testing device for prefabricated concrete buildings.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A vertical inspection device for prefabricated concrete buildings, comprising:

[0009] The ruler body;

[0010] The first mounting plate and the second mounting plate are respectively fixed vertically to the top and bottom of the straightedge body, and the first mounting plate and the second mounting plate are parallel to each other.

[0011] A horizontal reference device is disposed on the first mounting plate, the horizontal reference device including a reflector that is always kept horizontal by the action of a counterweight;

[0012] A laser measuring device, mounted on the second mounting plate, includes a laser emitter and a scale plate. The optical axis of the laser emitter is perpendicular to the ruler body and is positioned towards the reflector. The scale plate is used to receive the laser spot reflected back by the reflector.

[0013] Preferably, the horizontal reference device is a universal joint, and the reflector is a mirror plate installed at the bottom of the universal joint.

[0014] Preferably, the universal joint includes:

[0015] The outer frame assembly is rotatably connected to the first mounting plate via a first pivot.

[0016] The inner frame assembly is rotatably connected to the outer frame assembly via a second pivot, the axis of the second pivot being perpendicular to the axis of the first pivot.

[0017] The mirror plate is fixedly installed at the bottom of the inner frame assembly, and a counterweight is provided at the bottom of the inner frame assembly.

[0018] Preferably, the outer frame assembly is a collar, and the inner frame assembly is a vertical rod, which passes through the collar and is connected to the collar via the second pivot.

[0019] Preferably, the surface of the scale plate is provided with a reference line along its length, the reference line passing through the emission origin of the laser emitter's optical axis; scale values ​​are provided at equal intervals along the reference line, and the scale values ​​are symmetrically marked with positive and negative values ​​on both sides of the origin.

[0020] Preferably, the marked value of the scale is twice its actual value.

[0021] In summary, the technical effects and advantages of this utility model are as follows:

[0022] One of the core innovations of this prefabricated concrete building vertical inspection device lies in its use of the geometric optics principle that "the angle of reflection equals the angle of incidence" to construct a natural "optical lever." When the wall surface has a slight tilt, the angle of incidence of the light emitted by the laser emitter relative to the horizontal mirror changes. After reflection by the horizontal mirror, the displacement of the reflected light spot on the scale plate is exactly twice the tilt of a simple straightedge. This design cleverly amplifies minute physical deviations, making previously imperceptible slight tilts easily detectable to the naked eye, thus improving the device's measurement sensitivity and resolution accuracy.

[0023] This invention solves the technical problem of poor laser line visibility in traditional laser levels under strong light. By focusing the laser onto a mirror and observing the reflected spot instead of observing the entire continuous laser line, a bright laser spot is clearly visible on the scale. Even in strong outdoor light, it is easily spotted and accurately located by the naked eye. This eliminates dependence on ambient lighting conditions, enabling "instant measurement and reading" under any lighting conditions, greatly improving detection efficiency and applicability in complex construction sites. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the horizontal reference device in this utility model;

[0027] Figure 4 This is a schematic diagram of the laser measuring device in this utility model.

[0028] In the diagram: 1. Ruler body; 2. First mounting plate; 3. Second mounting plate; 4. Reflector; 5. Laser emitter; 6. Scale plate; 61. Baseline; 62. Scale value; 7. Universal vertical bracket; 71. First pivot; 72. Second pivot; 73. Collar; 74. Vertical rod; 8. Counterweight. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Reference Figure 1-4A prefabricated concrete building vertical detection device includes a straightedge body 1, a horizontal reference device, and a laser measuring device. In specific applications, the straightedge body 1 is directly placed against the wall to be inspected. Its flatness and straightness are the basis for measurement. A first mounting plate 2 and a second mounting plate 3 are vertically fixed at the top and bottom of the straightedge body 1, respectively. The first mounting plate 2 and the second mounting plate 3 are arranged parallel to each other, ensuring that the transmitting and receiving components supported by them and opposite to each other can be in the correct spatial correspondence, providing structural guarantee for the realization of the entire measurement principle.

[0031] Specifically, the horizontal reference device is mounted on the first mounting plate 2 at the top. In this embodiment, the horizontal reference device is specifically a universal joint 7. Its core function is to provide an absolute horizontal reference that is not affected by the tilt of the straightedge body 1 and is always determined by gravity. The universal joint 7 includes an outer frame assembly, which is rotatably connected to the first mounting plate 2 through a first pivot 71, allowing it to swing freely in a plane. Furthermore, the universal joint 7 also includes an inner frame assembly, which is connected to the outer frame assembly through a second pivot 71. The axis of the second pivot 71 is perpendicular to the axis of the first pivot 71. This dual-axis orthogonal arrangement constitutes a classic universal joint structure, which allows the inner frame assembly to be freely adjusted in any direction relative to the straightedge body 1 under the action of counterweight.

[0032] Reference Figure 1-4 As a preferred and specific implementation, the outer frame assembly is a collar 73, while the inner frame assembly is a vertical rod 74. The vertical rod 74 passes through the collar 73 and is rotatably connected to the collar 73 through a second rotating shaft 72. At the bottom of the vertical rod 74, a reflector 4 is fixedly installed. In this solution, the reflector 4 is specifically a mirror plate with the mirror surface facing down. At the same time, at the bottom of the vertical rod 74, a counterweight 8 is set on the mirror plate. The function of the counterweight 8 is to lower the center of gravity of the horizontal reference device, so that the vertical rod 74 always remains in a vertical state, thereby ensuring that the mirror plate at its bottom can be quickly adjusted and stabilized on a strictly horizontal plane under any circumstances.

[0033] The laser measuring device, which works in conjunction with the horizontal reference device at the top, is integrated on the second mounting plate 3 at the bottom. The laser measuring device mainly includes a laser emitter 5 and a scale plate 6. The optical path of the laser emitter 5 is parallel to the ruler body 1 and emits a laser beam straight toward the mirror plate above. The scale plate 6 is fixedly mounted on the laser emitter 5 and coincides with the position of the laser emitter 5. The scale plate 6 has a small hole for the laser from the laser emitter 5 to pass through. The scale plate 6 is used to receive the laser spot reflected back by the mirror plate above for the operator to read.

[0034] Reference Figure 2-4In order to accurately quantify the verticality deviation of the wall, a baseline 61 extending along its length (i.e., perpendicular to the straightedge body 1 and the wall) is set on the surface of the scale plate 6. The baseline 61 is located at the emission origin of the laser emitter 5. Along this baseline 61, scale values ​​62 are set at equal intervals. These scale values ​​62 are symmetrically marked on both sides with the emission origin of the laser emitter 5 as the center. The center point is marked as 0, one side is marked as positive, and the other side is marked as negative, so as to intuitively distinguish the direction of the wall tilt.

[0035] A particularly ingenious design feature of this invention lies in its optical magnification mechanism. The scale value 62 marked on the scale plate 6 is twice the corresponding actual physical tilt value. This design is based on the law of reflection: the angle of incidence equals the angle of reflection. When the straightedge body 1 tilts slightly, the laser emitter 5 tilts accordingly, causing a change in the angle of incidence of the light rays incident on the mirror plate. Since the mirror plate remains horizontal, the angle of reflection of the reflected light will change by twice the tilt angle of the straightedge body 1. Therefore, the displacement of the reflected light spot on the scale plate 6 is twice the displacement caused by simply tilting the straightedge body 1. This natural "optical lever" effect amplifies minute deviations, greatly improving the sensitivity and accuracy of the measurement, making minute perpendicularity deviations easily detectable to the naked eye.

[0036] During use, the operator places the straightedge body 1 vertically against the wall to be tested. If the reflected laser spot does not fall on the baseline 61, the operator is immediately alerted that the straightedge body 1 is not vertically aligned and is tilted. The operator needs to adjust the position of the straightedge body 1 until the spot falls on the baseline 61. This step ensures the accuracy of the measurement reference. Subsequently, the operator observes the specific position of the laser spot on the scale plate 6. If the spot is exactly at the origin, it proves that the wall is vertical without deviation. If the spot deviates from the origin, the operator directly reads the reading on the scale value 62 indicated by the spot. Since this value has been magnified to twice the actual value, the verticality deviation of the wall can be obtained directly without calculation, achieving fast, intuitive, and high-precision measurement.

Claims

1. A vertical inspection device for prefabricated concrete buildings, characterized in that, The system includes a ruler body (1) and two parallel mounting plates (2 and 3), which are respectively vertically fixed to the top and bottom of the ruler body (1). A horizontal reference device is provided on the first mounting plate (2), which includes a reflector (4) that is always kept horizontal by a counterweight. A laser measuring device is provided on the second mounting plate (3), which includes a laser emitter (5) and a scale plate (6). The light path of the laser emitter (5) is parallel to the ruler body (1) and is set towards the reflector (4). The scale plate (6) is used to receive the laser spot reflected back by the reflector (4).

2. The prefabricated concrete building vertical inspection device according to claim 1, characterized in that, The horizontal reference device is a universal joint (7), and the reflector (4) is a mirror plate installed at the bottom of the universal joint (7).

3. The vertical inspection device for prefabricated concrete buildings according to claim 2, characterized in that, The universal hanging bracket (7) includes an outer frame assembly and an inner frame assembly. The outer frame assembly is rotatably connected to the first mounting plate (2) via a first rotating shaft (71). The inner frame assembly is rotatably connected to the outer frame assembly via a second rotating shaft (72). The axis of the second rotating shaft (72) is perpendicular to the axis of the first rotating shaft (71). The mirror plate is fixedly installed at the bottom of the inner frame assembly, and a counterweight (8) is provided at the bottom of the inner frame assembly.

4. The prefabricated concrete building vertical inspection device according to claim 3, characterized in that, The outer frame assembly is a collar (73), and the inner frame assembly is a vertical rod (74). The vertical rod (74) passes through the collar (73) and is connected to the collar (73) through a second rotating shaft (72).

5. A vertical inspection device for prefabricated concrete buildings according to claim 1, characterized in that, The surface of the scale plate (6) is provided with a reference line (61) along its length direction, the reference line (61) passes through the origin of the optical axis of the laser emitter (5); scale values ​​(62) are provided at equal intervals along the reference line (61), and the scale values ​​(62) are symmetrically marked with positive and negative values ​​on both sides with the origin as the center.

6. A vertical inspection device for prefabricated concrete buildings according to claim 5, characterized in that, The marked value of the scale value (62) is twice its actual value.

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