Concrete floor thickness measuring device

Abstract

The utility model relates to the technical field of thickness detection equipment, in particular to a concrete floor thickness measuring device. The structure is more scientific and reasonable, the operation is convenient, and the floor thickness measurement precision is further improved; comprising a horizontal base, a main calibrated scale perpendicular to the horizontal base, a sliding base installed on the main calibrated scale in a sliding mode, a connecting rod integrally connected with the sliding base and a clamping assembly installed at the bottom of the connecting rod, and a pointer pointing to scale marks on the main calibrated scale is arranged on the sliding base; the clamping assembly comprises a barrel shell, a plurality of clamping jaws hinged to the barrel shell and evenly distributed in the circumferential direction of the barrel shell, a plurality of transmission pieces, an electric cylinder fixedly installed in the barrel shell and a lifting base fixedly installed at the output end of the electric cylinder, one end of each transmission piece is hinged to the corresponding clamping jaw, and the other end of each transmission piece is hinged to the corresponding lifting base.

Description

Technical Field

[0001] This utility model relates to the technical field of thickness detection equipment, and in particular to a device for measuring the thickness of concrete floor slabs. Background Technology

[0002] As is well known, concrete slab thickness is one of the important items in the current supervision and spot checks of construction projects and enterprise self-inspection. Commonly used methods for measuring concrete slab thickness include: caliper measurement, drilling method, ultrasonic method and level measurement method. Among them, the drilling method provides the most intuitive and accurate measurement of slab thickness.

[0003] For example, Chinese utility model patent CN210441788U discloses a destructive testing device for detecting the thickness of floor slabs, including a sliding guide rod and a floor slab. An upper positioning rod is fixedly connected to the outer surface of the sliding guide rod, and a scale is slidably connected to one side of the sliding guide rod. It is convenient to use, simple to operate, saves time and effort, reduces manpower compared to previous methods requiring two people, and avoids errors caused by unevenness at template joints, making it more accurate than existing technologies.

[0004] However, when implementing this device, the following defects were found: during the measurement process, the measuring device uses the top of the floor slab to be tested as the reference surface. The top surface of the floor slab is uneven, resulting in errors in the measured value of the floor slab thickness. The accuracy of the floor slab thickness measurement needs to be further improved. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a concrete floor slab thickness measuring device with a more scientific and reasonable structure, convenient operation, and further improved accuracy in floor slab thickness measurement.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a concrete floor slab thickness measuring device, comprising a horizontal base, a main scale perpendicular to the horizontal base, a slide mounted on the main scale, a connecting rod integrally connected to the slide, and a clamping assembly installed at the bottom of the connecting rod. The slide is provided with a pointer pointing to the scale line on the main scale. The clamping assembly comprises a cylindrical shell, multiple jaws hinged to the cylindrical shell and evenly distributed around the circumference of the cylindrical shell, multiple transmission components, an electric cylinder fixedly installed inside the cylindrical shell, and a lifting seat fixedly installed at the output end of the electric cylinder. One end of the transmission component is hinged to the jaw, and the other end of the transmission component is hinged to the lifting seat. Further, the outer diameter of the cylindrical shell is 0.5-2 cm smaller than the inner diameter of the drilled hole on the floor slab; the distance from the end of the jaw in the horizontal state to the outside of the cylindrical shell is L, and the length of L is at least 3 cm; the thickness of the jaw is a standard dimension h, where h can be a standard value such as 1 cm or 2 cm.

[0009] Preferably, a limiting seat is provided at the top of the inner shell, and the claw is in a horizontal state when the bottom of the limiting seat contacts the top of the lifting seat.

[0010] Preferably, the claw has two correspondingly arranged cutting edges; further, the distance between the two cutting edges is a standard size h, and h can be a standard value such as 1cm or 2cm.

[0011] Preferably, the connecting rod is rotatably connected to the cylinder shell; further, the cylinder shell can be rotatably connected to the connecting rod via bearings or the like, and a limiting block that fits into the inside of the cylinder shell is installed on the connecting rod to prevent the cylinder shell from moving up and down along the connecting rod.

[0012] Preferably, the top of the cylindrical shell is provided with a rotating rod, and a knob is installed on the rotating rod; further, the height of the rotating rod is at least 5 cm higher than the height of the drill hole.

[0013] Preferably, the bottom of the level seat is screwed with multiple feet, and the top of the main scale is equipped with a circular bubble level.

[0014] Preferably, a limiting screw is screwed onto the slide block, and the end of the limiting screw contacts the main scale.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a concrete floor slab thickness measuring device with the following advantages: The device pre-drills a through hole in the floor slab, placing a horizontal seat above the through hole with the cylindrical shell roughly aligned. An electric cylinder is activated, moving the lifting seat upwards. After transmission, the jaws are horizontal, pushing the slide downwards until the bottom of the jaws is in close contact with the top surface of the floor slab. At this point, the value d1 on the main scale is read. Subsequently, the electric cylinder moves the lifting seat downwards... After the transmission component is activated, the chuck rotates to a vertical position and retracts into the outer shell of the cylinder. This pushes the slide down until the clamping assembly passes through the through hole. The electric cylinder restarts, and the chuck is in a horizontal position. It pushes the slide upward until the upper part of the chuck is in close contact with the bottom end face of the floor slab. At this point, the value d2 of the pointer on the main scale is read. The standard thickness value of the chuck is h, and the thickness of the floor slab is H. d2-d1=H+h, thus H=d2-d1-h. This measuring device has a more scientific and reasonable structure, is easy to operate, and can further improve the accuracy of floor slab thickness measurement. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the front planar structure of this utility model;

[0019] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 This is the utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0021] The following are labels in the attached diagram: 1. Level seat; 2. Main scale; 3. Slide seat; 4. Connecting rod; 5. Pointer; 6. Cylinder shell; 7. Claw; 8. Transmission component; 9. Electric cylinder; 10. Lifting seat; 11. Limit seat; 12. Clamping edge; 13. Rotating rod; 14. Knob; 15. Foot; 16. Circular bubble level; 17. Limiting screw. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] As described in the background art, a destructive testing device for detecting the thickness of a floor slab uses the top of the floor slab to be tested as a reference surface during the measurement process. However, the top surface of the floor slab is uneven, resulting in errors in the measured value of the floor slab thickness. Therefore, the accuracy of the floor slab thickness measurement needs to be further improved.

[0024] To solve this technical problem, this utility model provides a concrete floor slab thickness measuring device, which is used for measuring the thickness of floor slabs.

[0025] Example 1

[0026] Please refer to Figure 1-4 The concrete floor slab thickness measuring device specifically includes: a horizontal base 1, a main scale 2 perpendicular to the horizontal base 1, a slide block 3 slidably mounted on the main scale 2, a connecting rod 4 integrally connected to the slide block 3, and a clamping assembly installed at the bottom of the connecting rod 4. The slide block 3 is equipped with a pointer 5 pointing to the scale line on the main scale 2. The clamping assembly includes a cylindrical shell 6, multiple jaws 7 hinged to the cylindrical shell 6 and evenly distributed around the circumference of the cylindrical shell 6, multiple transmission components 8, an electric cylinder 9 fixedly installed inside the cylindrical shell 6, and a lifting seat 10 fixedly installed at the output end of the electric cylinder 9. One end of the transmission component 8 is hinged to the jaw 7, and the other end of the transmission component 8 is hinged to the lifting seat 10. Further, the outer diameter of the cylindrical shell 6 is 0.5-2 cm smaller than the inner diameter of the drilled hole on the floor slab; the distance from the end of the horizontal jaw 7 to the outside of the cylindrical shell 6 is L (please refer to...). Figure 4 The length of L is at least 3cm; the thickness of the claw 7 is the standard size h, and h can be a standard value such as 1cm or 2cm.

[0027] For details, please refer to Figure 4 The top of the inner shell 6 is provided with a limiting seat 11. When the bottom of the limiting seat 11 contacts the top of the lifting seat 10, the pawl 7 is in a horizontal state.

[0028] The chuck 7 has two correspondingly arranged chuck blades 12; furthermore, the distance between the two chuck blades 12 is a standard size h, and h can be a standard value such as 1cm or 2cm.

[0029] The connecting rod 4 is rotatably connected to the cylindrical shell 6; furthermore, the cylindrical shell 6 can be rotatably connected to the connecting rod 4 through bearings, etc. A limiting block that fits inside the cylindrical shell 6 is installed on the connecting rod 4 to prevent the cylindrical shell 6 from moving up and down along the connecting rod 4.

[0030] The top of the cylindrical shell 6 is provided with a rotating rod 13, and a knob 14 is installed on the rotating rod 13; furthermore, the height of the rotating rod 13 is at least 5cm higher than the height of the drill hole.

[0031] The concrete slab thickness measuring device provided in this embodiment has a limiting seat 11 that can limit the lifting height of the lifting seat 10. When the lifting seat 10 contacts the limiting seat 11, the pawl 7 is exactly positioned... Figure 4 The horizontal position shown prevents the jaws 7 from tilting and affecting the measurement accuracy of the floor slab thickness. The cutting edge 12 reduces the contact area between the jaws 7 and the upper and lower surfaces of the floor slab, reducing the impact of particles or unevenness on the floor slab thickness measurement accuracy. By rotating the knob 14, the knob 14 drives the rotating rod 13 and the cylinder 6 to rotate, and the cutting edge 12 can scrape away particles near the through hole on the floor slab, reducing the impact of particles on the accuracy of the floor slab thickness measurement. By rotating the cylinder 6, the cutting edge 12 contacts different positions around the through hole, and multiple d1 and d2 values ​​are measured. The average of the measured d1 and d2 values ​​is taken to obtain more accurate and true d1 and d2, thereby further improving the measurement accuracy of the floor slab thickness.

[0032] Example 2

[0033] The concrete slab thickness measuring device provided in Example 1 has been further optimized. For details, please refer to [link / reference]. Figure 1 or Figure 2 The bottom of the level seat 1 is screwed with multiple feet 15, and the top of the main scale 2 is equipped with a circular bubble level 16.

[0034] Specifically, a limiting screw 17 is screwed onto the slide block 3, and the end of the limiting screw 17 contacts the main scale 2.

[0035] The concrete slab thickness measuring device provided in this embodiment, by rotating the footrests 15 and referring to the circular bubble level 16, ensures that the bubble in the circular bubble level 16 is exactly in the center, so that the level seat 1 is in a horizontal state and the main scale 2 is in a vertical state, thereby further improving the measurement accuracy of the slab thickness; while the limiting screw 17 can limit the adjusted slide seat 3 to prevent the slide seat 3 from sliding up and down along the main scale 2 on its own.

[0036] The usage process of the concrete floor slab thickness measuring device provided by this utility model is as follows: A through hole is pre-drilled in the floor slab, and the horizontal seat 1 is placed horizontally above the through hole. The cylindrical shell 6 is roughly aligned with the through hole. The electric cylinder 9 is started and drives the lifting seat 10 to move upward. After being driven by the transmission component 8, the pawl 7 is in a horizontal state and pushes the slide 3 downward until the bottom of the pawl 7 is in close contact with the top end face of the floor slab. At this time, the value d1 of the pointer 5 on the main scale 2 is read. Then, the electric cylinder 9 drives the lifting seat... 10 moves downwards, and after being driven by the transmission component 8, the pawl 7 rotates to a vertical position and retracts into the outside of the cylinder shell 6, pushing the slide 3 downwards until the clamping component passes through the through hole. The electric cylinder 9 starts again, and the pawl 7 is in a horizontal position, pushing the slide 3 upwards until the upper part of the pawl 7 is in close contact with the bottom end face of the floor slab. At this time, the value d2 of the pointer 5 on the main scale 2 is read. The standard thickness value of the pawl 7 is h, and the thickness of the floor slab is H. d2-d1=H+h, so H=d2-d1-h.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A device for measuring the thickness of a concrete floor slab, characterized in that, The device includes a horizontal base (1), a main scale (2) perpendicular to the horizontal base (1), a slide (3) slidably mounted on the main scale (2), a connecting rod (4) integrally connected to the slide (3), and a clamping assembly mounted on the bottom of the connecting rod (4). The slide (3) is provided with a pointer (5) pointing to the scale line on the main scale (2). The clamping assembly includes a cylindrical shell (6), multiple claws (7) hinged to the cylindrical shell (6) and evenly distributed around the cylindrical shell (6), multiple transmission components (8), an electric cylinder (9) fixedly mounted inside the cylindrical shell (6), and a lifting seat (10) fixedly mounted at the output end of the electric cylinder (9). One end of the transmission component (8) is hinged to the claw (7), and the other end of the transmission component (8) is hinged to the lifting seat (10).

2. The concrete floor slab thickness measuring device according to claim 1, characterized in that, The top of the inner shell (6) is provided with a limiting seat (11). When the bottom of the limiting seat (11) contacts the top of the lifting seat (10), the claw (7) is in a horizontal state.

3. The concrete floor slab thickness measuring device according to claim 1 or 2, characterized in that, The chuck (7) is provided with two corresponding chuck blades (12).

4. The concrete floor slab thickness measuring device according to claim 3, characterized in that, The connecting rod (4) is rotatably connected to the cylindrical shell (6).

5. The concrete floor slab thickness measuring device according to claim 4, characterized in that, The top of the cylindrical shell (6) is provided with a rotating rod (13), and a knob (14) is installed on the rotating rod (13).

6. The concrete floor slab thickness measuring device according to claim 1, characterized in that, The bottom of the level seat (1) is screwed with multiple feet (15), and the top of the main scale (2) is equipped with a circular bubble level (16).

7. The concrete floor slab thickness measuring device according to claim 1, characterized in that, The slide (3) is screwed with a limiting screw (17), and the end of the limiting screw (17) is in contact with the main scale (2).

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