A floor thickness measuring instrument for buildings

Abstract

The present invention discloses a floor slab thickness measuring instrument for houses, which comprises a measuring cylinder, a first driving rod, a second driving rod and a third driving rod located between the first driving rod and the second driving rod, an adjusting assembly and a fixing assembly arranged inside the measuring cylinder. An installation hole penetrating up and down is provided inside the measuring cylinder, and a scale and a strip-shaped groove are provided on the outer wall. A movable member is provided at the lower end of the third driving rod, and an indicating member arranged in the strip-shaped groove is provided on the movable member. The floor slab thickness measuring instrument for houses has a compact structure and is convenient to operate. The measurement work can be completed independently by one person. It only needs to be measured on the floor slab. By rotating the second rotating member, the fixing assembly can be bent to determine the reference surface, and then by rotating the first rotating member, the thickness of the floor slab can be accurately measured, which can effectively improve the efficiency of measuring the thickness of the floor slab.

Description

Technical Field

[0001] The present invention relates to the technology of building engineering inspection, and particularly to a floor slab thickness measuring instrument for houses. Background Art

[0002] In housing construction projects, the thickness of the floor slab is a key indicator of project quality. Whether the floor slab is too thin or too thick will affect the project quality. The existing methods for measuring the thickness of the floor slab require the cooperation of two inspectors. Before measurement, a hole needs to be drilled in the floor slab in advance. One of the inspectors uses a flat object or the like as a reference to block the lower part of the hole on the lower floor of the floor, and the other inspector uses a depth vernier caliper to measure the thickness of the floor slab at the hole on the upper floor. This inspection method is inefficient and wastes manpower. There is an urgent need for a convenient measuring tool for measurement.

[0003] Legal supervision units generally use professional floor slab thickness detectors, which detect using the principle of electromagnetic field attenuation. However, such professional instruments are expensive and often unaffordable for ordinary citizens.

[0004] CN110763105B discloses a destructive detection method for the thickness of the floor slab. The lower positioning rod storage structure in this detection method is relatively large, and the floor slab hole drilled is also relatively large, which will inevitably affect the quality of the entire floor slab. In addition, the involved structures are numerous, resulting in a relatively large volume and weight, and being inconvenient to carry. Summary of the Invention

[0005] In order to solve the defects existing in the above-mentioned prior art, the present invention provides a floor slab thickness measuring instrument for houses.

[0006] The technical solution of the present invention is implemented as follows:

[0007] A floor slab thickness measuring instrument for houses, characterized by comprising:

[0008] A measuring cylinder, which is internally provided with an installation hole penetrating up and down, and its outer wall is provided with scales and strip-shaped grooves,

[0009] A first driving rod, a second driving rod arranged inside the measuring cylinder, and a third driving rod located between the first driving rod and the second driving rod. A movable part is provided at the lower end of the third driving rod, and an indicating part arranged in the strip-shaped groove is provided on the movable part.

[0010] An adjusting assembly for driving the first driving rod, the second driving rod, and the third driving rod, and the adjusting assembly is installed at the upper end of the measuring cylinder.

[0011] A fixing component installed at the lower end of a graduated cylinder. The fixing component consists of a first fixing piece and a second fixing piece. The fixing component is hingedly connected to the lower end of the graduated cylinder, and the first fixing piece is hingedly connected to a first driving rod and a second driving rod through a first hinge piece and a second hinge piece respectively.

[0012] In the present invention, the adjusting component consists of a fixed seat, a fixed cover, a first rotating piece, a second rotating piece and a driving piece. The first rotating piece is connected to a third driving rod, the driving piece is connected to the second rotating piece. The first rotating piece and the second rotating piece are arranged outside the fixed seat, and the driving piece is arranged inside the fixed seat. One end of the driving piece is hingedly connected to the first driving rod, and the other end is hingedly connected to the second driving rod.

[0013] In the present invention, hinge rods are provided at both ends of the driving piece. The upper ends of the first driving rod and the second driving rod both have movable parts, and a movable hole for accommodating the hinge rod is provided in the middle of the movable part.

[0014] In the present invention, a connecting rod is provided on the second rotating piece. The connecting rod passes through the fixed cover and is connected to the driving piece. A spring is sleeved on the connecting rod. One end of the spring contacts the fixed cover, and the other end contacts the driving piece.

[0015] In the present invention, two sets of symmetrically arranged positioning holes are provided on the fixed cover, and positioning rods cooperating with the positioning holes are provided on the second rotating piece.

[0016] In the present invention, a threaded part is provided on the third driving rod, and a threaded hole cooperating with the threaded part is provided on the movable part.

[0017] In the present invention, the installation hole consists of a first limiting area for limiting the positions of the first driving rod and the second driving rod and a second limiting area for limiting the movable part.

[0018] In the present invention, planes contacting the floor slab are provided on the first fixing piece and the second fixing piece.

[0019] In the present invention, an arc-shaped part is provided on the first hinge piece and the second hinge piece, and an arc-shaped surface cooperating with the arc-shaped part is provided on the first fixing piece.

[0020] Implementing this floor slab thickness measuring instrument of the present invention has the following beneficial effects: This floor slab thickness measuring instrument has a compact structure, is convenient to operate, small in size, light in weight, and easy to carry. The measurement work can be completed independently by one person, and the measuring instrument used can use smaller holes, which is convenient for drilling, and can also ensure the quality of the entire floor slab during drilling without causing any impact on the floor slab. It only needs to measure on the floor slab. By rotating the second rotating member, the fixing component can be bent to determine the reference plane, and then by rotating the first rotating member, the thickness of the floor slab can be accurately measured, which can effectively improve the efficiency of measuring the thickness of the floor slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the floor slab thickness measuring instrument of the present invention;

[0022] Figure 2 is Figure 1 the structural schematic diagram of the measuring instrument in

[0023] Figure 3 is Figure 2 the partial enlarged view at A in

[0024] Figure 4 is Figure 2 the exploded view of

[0025] Figure 5 is Figure 4 the structural schematic diagram of the adjusting component in

[0026] Figure 6 is Figure 4 the structural schematic diagram of the measuring cylinder in

[0027] Figure 7 is Figure 6 the top view of

[0028] Figure 8 is the structural schematic diagram of the first driving rod, the second driving rod, the third driving rod and the moving part in the present invention;

[0029] Figure 9 is Figure 8 the partial enlarged view at B in

[0030] Figure 10 is the structural schematic diagram of the fixing cover, the second rotating member, the driving member, the first driving rod, the second driving rod and the spring in the present invention;

[0031] Figure 11 is Figure 10 the exploded view of the fixing cover and the second rotating member in

[0032] Figure 12 is the structural schematic diagram of the moving part and the indicating part in the present invention;

[0033] Figure 13 Schematic structural diagram of the first driving rod, second driving rod, first hinge member, second hinge member and fixing assembly in the present invention;

[0034] Figure 14 is Figure 13 Schematic structural diagram of another direction of;

[0035] Figure 15 is Figure 13 Exploded view of;

[0036] Figure 16 is Figure 15 Schematic structural diagram of the first hinge member and second hinge member in;

[0037] Figure 17 is Figure 15 Schematic structural diagram of the first fixing member in;

[0038] Figure 18 Schematic structural diagram of the measuring cylinder, first fixing member and second fixing member in the present invention.

[0039] In the figure: measuring instrument 1, measuring cylinder 2, first driving rod 3, second driving rod 4, third driving rod 5, adjusting assembly 6, fixing assembly 7, hole 8, floor slab 9, movable member 10, indicating member 11, mounting hole 12, scale 13, strip-shaped groove 14, first restricted area 15, second restricted area 16, connection end 17, arc end 18, movable part 19, hinge rod 20, movable hole 21, driving member 22, fixed seat 23, first rotating member 24, threaded part 25, threaded hole 26, first fixing member 27, second fixing member 28, first hinge member 29, second hinge member 30, first hinge portion 31, second hinge portion 32, third hinge portion 33, fourth hinge portion 34, arc portion 35, arc surface 36, fifth hinge portion 37, sixth hinge portion 38, plane 39, fixed cover 40, second rotating member 41, connecting rod 42, spring 43, positioning hole 44, positioning rod 45. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] Such as Figures 1 to 18As shown in the figure, for this floor slab thickness measuring instrument of the present invention, the measuring instrument 1 includes a measuring cylinder 2, a first driving rod 3, a second driving rod 4, a third driving rod 5 located between the first driving rod 3 and the second driving rod 4, an adjusting assembly 6, and a fixing assembly 7. The measuring cylinder 2 is for the staff to extend into the drilled hole 8 to measure the thickness of the entire floor slab 9. The fixing assembly 7 is for determining the position of the bottom surface of the floor slab 9, taking the bottom surface of the floor slab 9 as the reference surface, and successively as the benchmark surface for measurement. The first driving rod 3 and the second driving rod 4 are for changing the direction of the fixing assembly 7, changing its state from parallel to the measuring cylinder 2 to perpendicular, so that the fixing assembly 7 can contact the bottom surface of the floor slab 9 to determine the reference surface. The third driving rod 5 is for changing the position of the moving part 10, which can effectively reduce the volume of the entire measuring instrument, facilitate carrying, and can also measure the thickness of all current floor slabs 9, enabling the indicating part 11 provided on the moving part 10 to move up and down with the moving part 10, thereby changing the position of the indicating part 11 at different positions on the scale 13, and then the thickness of the floor slab 9 to be measured can be obtained.

[0042] Meanwhile, before the fixing assembly 7 extends into the drilled hole 8, it is vertically parallel to the measuring cylinder 2, and the designed measuring cylinder 2 and the fixing assembly 7 have a small diameter, which can facilitate the staff to drill a smaller hole 8, facilitating the measurement of the floor slab 9.

[0043] The adjusting assembly 6 can be used to drive the first driving rod 3, the second driving rod 4, and the third driving rod 5, and can change the positions of the first driving rod 3, the second driving rod 4, and the third driving rod 5, so as to change the positions of the fixing assembly 7 and the moving part 10.

[0044] The measuring cylinder 2 is provided with an installation hole 12 penetrating up and down, and its outer wall is provided with a scale 13 and a strip-shaped groove 14. The installation hole 12 is composed of a first limiting area 15 that restricts the positions of the first driving rod 3 and the second driving rod 4 and a second limiting area 16 that restricts the moving part 10.

[0045] The shape of the first limiting area 15 can restrict the positions of the first driving rod 3 and the second driving rod 4, so that the first driving rod 3 and the second driving rod 4 can only move up and down. The second limiting area 16 is located between the first driving rod 3 and the second driving rod 4, so it is also in the middle of the two first limiting areas 15. The position of the moving part 10 at the lower end of the third driving rod 5 can be limited by the first driving rod 3, the second driving rod 4, and the inner wall of the second limiting area 16, so that when the third driving rod 5 rotates, it can only change the position of the moving part 10 up and down, keeping the moving part 10 driving the indicating part 11 to move in the strip-shaped groove 14, making it indicate the scale 13 on the measuring cylinder 2, and thus the thickness of the floor slab 9 can be known.

[0046] A movable member 10 is provided at the lower end of the third driving rod 5, and an indicating member 11 is provided on the movable member 10 and located in the strip-shaped groove 14. The indicating member 11 is composed of a connecting end 17 and an arc end 18. The connecting end 17 is located in the strip-shaped groove 14 and connected to the movable member 10, while the arc end 18 is arranged on the outer wall of the strip-shaped groove 14 and contacts the outer wall of the measuring cylinder 2. Since scale 13 is provided on the outer wall of the measuring cylinder 2 and the indicating member 11 can move up and down in the strip-shaped groove 14, the scale 13 can be indicated by the indicating member 11. The position of the scale 13 indicated by the lower end face of the arc end 18 represents the measured data. At the same time, it can also be indicated by the upper end face of the arc end 18. Only by subtracting the thickness of the arc end 18 can the measured data be known.

[0047] The adjusting assembly 6 is installed at the upper end of the measuring cylinder 2 and is used to drive the first driving rod 3, the second driving rod 4 and the third driving rod 5, so that the positions of the first driving rod 3, the second driving rod 4 and the third driving rod 5 are changed.

[0048] The upper ends of the first driving rod 3 and the second driving rod 4 are both provided with movable parts 19. There is a movable hole 21 for accommodating the hinge rod 20 in the middle of the movable part 19, and the movable hole 21 is a strip-shaped hole. The two ends of the driving member 22 are provided with hinge rods 20, and the hinge rods 20 are arranged in the movable hole 21. Since the movable hole 21 is a strip-shaped hole, when the driving member 22 rotates and drives the first driving rod 3 and the second driving rod 4 to rotate, the hinge rod 20 can move in the movable hole 21 and change its position in the movable hole 21, thereby driving the first driving rod 3 and the second driving rod 4.

[0049] The upper end of the third driving rod 5 passes through the fixed seat 23 and is connected to the first rotating member 24, so that when the first rotating member 24 rotates, it can drive the third driving rod 5 to rotate. The third driving rod 5 has a threaded portion 25, and the movable member 10 has a threaded hole 26 that cooperates with the threaded portion 25. After the first rotating member 24 rotates, it drives the third driving rod 5 to rotate, and the threaded portion 25 will cooperate with the threaded hole 26 to drive the movable member 10 to move up and down. Since the position of the movable member 10 is restricted by the second restricted area 16, it can only move up and down. When the movable member 10 moves up and down, it only changes the position of the threaded portion 25 in the threaded hole 26. When the threaded portion 25 rotates forward, at this time, the threaded portion 25 cooperates with the threaded hole 26, so that the threaded portion 25 continuously enters the threaded hole 26, thereby driving the movable member 10 to move upward. When the threaded portion 25 rotates reversely, it can drive the movable member 10 in the reverse direction through the cooperation of the threaded portion 25 and the threaded hole 26, so that the movable member 10 moves downward. Thus, the indicating member 11 can be driven by the movable member 10 to move up and down, changing the indicating position of the indicating member 11 in the strip-shaped groove 14.

[0050] Of course, in practice, the length of the connecting end 17 can be increased so that the arc end 18 directly lands on the floor slab 9, facilitating the direct acquisition of data.

[0051] The fixing assembly 7 is installed at the lower end of the measuring cylinder 2 and is hinged to the measuring cylinder 2. The fixing assembly 7 is composed of a first fixing member 27 and a second fixing member 28. The fixing assembly 7 is hinged to the lower end of the measuring cylinder 2, and the first fixing member 27 is hinged to the first driving rod 3 and the second driving rod 4 through a first hinge member 29 and a second hinge member 30 respectively.

[0052] Symmetrically arranged first hinge portions 31 are provided at the lower end of the measuring cylinder 2. A second hinge portion 32 is provided on the first fixing member 27, and a third hinge portion 33 is provided on the second fixing member 28. The second hinge portion 32 and the third hinge portion 33 are respectively hinged to the first hinge portion 31 of the measuring cylinder 2, keeping the fixing assembly 7 capable of rotating around the lower end of the measuring cylinder 2.

[0053] The first fixing member 27 and the second fixing member 28 are connected by a pin. And symmetrically arranged fourth hinge portions 34 are provided on the first fixing member 27. An arc portion 35 is provided on the first hinge member 29 and the second hinge member 30. An arc surface 36 cooperating with the arc portion 35 is provided on the fourth hinge portion 34 of the first fixing member 27. The arc surface 36 can guide the cooperation of the first fixing member 27 with the first hinge member 29 and the second hinge member 30 during rotation, facilitating the rotation of the fixing assembly 7.

[0054] Fifth hinge portions 37 are provided at both ends of the first hinge member 29 and the second hinge member 30. And sixth hinge portions 38 are provided at the lower ends of the first driving rod 3 and the second driving rod 4. One end of the first hinge member 29 and the second hinge member 30 is hinged to the fourth hinge portion 34 of the first fixing member 27, and the other end is hinged to the sixth hinge portions 38 at the lower ends of the first driving rod 3 and the second driving rod 4.

[0055] When the driving member 22 rotates, the first driving rod 3 pushes the first hinge member 29 downward, and the second driving rod 4 pulls the second hinge member 30 upward, so that the fixing assembly 7 rotates around the first hinge portion 31.

[0056] Flat surfaces 39 in contact with the floor slab 9 are provided on the first fixing member 27 and the second fixing member 28. The flat surfaces 39 are in contact with the bottom surface of the floor slab 9 and serve as a reference surface, that is, the distance is zero.

[0057] The adjusting component 6 is composed of a fixed seat 23, a fixed cover 40, a first rotating member 24, a second rotating member 41 and a driving member 22. The first rotating member 24 is connected to the third driving rod 5, the driving member 22 is connected to the second rotating member 41. The first rotating member 24 and the second rotating member 41 are arranged outside the fixed seat 23, and the driving member 22 is arranged inside the fixed seat 23. One end of the driving member 22 is hinged to the first driving rod 3, and the other end is hinged to the second driving rod 4.

[0058] The second rotating member 41 is provided with a connecting rod 42. The connecting rod 42 passes through the fixed cover 40 and is connected to the driving member 22. A spring 43 is sleeved on the connecting rod 42. One end of the spring 43 contacts the fixed cover 40, and the other end contacts the driving member 22.

[0059] The fixed cover 40 is provided with two groups of symmetrically arranged positioning holes 44, and the second rotating member 41 is provided with positioning rods 45 that cooperate with the positioning holes 44.

[0060] The angle between the a-group positioning holes 44 and the b-group positioning holes 44, and between the a-group positioning holes 44 and the c-group positioning holes 44 is 48°. When it is necessary for the second rotating member 41 to drive the first driving rod 3 and the second driving rod 4 to change positions, only need to first pull the second rotating member 41 to compress the spring 43, so that the positioning rod 45 disengages from the a-group positioning holes 44. Then, whether rotating forward or backward, when the positioning rod 45 is placed in the b-group positioning holes 44 or the c-group positioning holes 44, the positioning rod 45 can be restricted in the b-group positioning holes 44 or the c-group positioning holes 44. At this time, the spring 43 is stretched by its own elastic force to limit the position of the second rotating member 41, so as to ensure that the angle between the fixing member and the measuring cylinder 2 is 90°, and the plane 39 contacts the bottom surface of the floor slab 9.

[0061] In practice, the distance from the plane 39 on the first fixing member 27 and the second fixing member 28 to the bottom surface of the strip-shaped groove 14 is known, assumed to be h1, and the distance from the bottom surface of the strip-shaped groove 14 to the position where the indicating member 11 moves can be directly picked up from the scale 13, assumed to be h2. Therefore, it can be known that the thickness of the floor slab 9 is h1 + h2 = h3. So h3 is the thickness of the floor slab 9. The measuring instrument 1 in the present invention is not only compact in structure and ingenious in design, but also uses relatively small components, which can reduce the weight and volume of the entire measuring instrument 1, is convenient to carry and operate. At the same time, the measured data can be directly known from the measuring cylinder 2, reducing the workload of reading and improving work efficiency.

[0062] Moreover, the diameter of the measuring cylinder 2 is small, and relatively small holes 8 can be drilled, which will not affect the quality of the floor slab 9.

[0063] When measuring, first drill a hole 8. The diameter of the hole 8 is slightly larger than the diameter of the measuring cylinder 2, but smaller than the distance from the center line of the measuring cylinder 2 to the outer wall of the arc end 18, so that the arc end 18 can be directly placed on the floor slab 9. Then insert the measuring cylinder 2 and the fixing assembly 7 into the hole 8. Next, rotate the second rotating member 41 to bend the fixing member so that it is perpendicular to the measuring cylinder 2. Then make the planes 39 of the first fixing member 27 and the second fixing member 28 contact the bottom surface of the floor slab 9. Finally, rotate the first rotating member 24 to drive the indicating member 11 to move downward by the movable member 10, and finally place the arc end 18 on the surface of the floor slab 9, and the data can be directly read from the scale 13.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A housing floor slab thickness measuring instrument, characterized in that, Including: A graduated cylinder, which is internally provided with an installation hole penetrating up and down, and its outer wall is provided with scales and strip-shaped grooves. A first driving rod, a second driving rod arranged inside the graduated cylinder, and a third driving rod located between the first driving rod and the second driving rod. A movable member is provided at the lower end of the third driving rod, and an indicating member arranged in the strip-shaped groove is provided on the movable member. An adjusting assembly for driving the first driving rod, the second driving rod, and the third driving rod. The adjusting assembly is installed at the upper end of the graduated cylinder. A fixing assembly installed at the lower end of the graduated cylinder. The fixing assembly is composed of a first fixing member and a second fixing member. The fixing assembly is hingedly connected to the lower end of the graduated cylinder, and the first fixing member is hingedly connected to the first driving rod and the second driving rod through a first hinge member and a second hinge member respectively. The adjusting assembly is composed of a fixed seat, a fixed cover, a first rotating member, a second rotating member, and a driving member. The first rotating member is connected to the third driving rod, the driving member is connected to the second rotating member. The first rotating member and the second rotating member are arranged outside the fixed seat, the driving member is arranged inside the fixed seat, one end of the driving member is hingedly connected to the first driving rod, and the other end is hingedly connected to the second driving rod.

2. The housing floor slab thickness measuring instrument according to claim 1, characterized in that, Hinge rods are provided at both ends of the driving member. Movable parts are provided at the upper ends of the first driving rod and the second driving rod, and movable holes for accommodating the hinge rods are provided in the middle of the movable parts.

3. The housing floor slab thickness measuring instrument according to claim 2, characterized in that, A connecting rod is provided on the second rotating member. The connecting rod passes through the fixed cover and is connected to the driving member. A spring is sleeved on the connecting rod. One end of the spring contacts the fixed cover, and the other end contacts the driving member.

4. The housing floor slab thickness measuring instrument according to claim 3, characterized in that, Two groups of symmetrically arranged positioning holes are provided on the fixed cover, and positioning rods cooperating with the positioning holes are provided on the second rotating member.

5. The housing floor slab thickness measuring instrument according to claim 1, characterized in that, A threaded portion is provided on the third driving rod, and a threaded hole cooperating with the threaded portion is provided on the movable member.

6. The housing floor slab thickness measuring instrument according to claim 1, characterized in that, The installation hole is composed of a first limiting area for limiting the positions of the first driving rod and the second driving rod and a second limiting area for limiting the movable member.

7. The housing floor slab thickness measuring instrument according to claim 1, characterized in that, Planes contacting the floor are provided on the first fixing member and the second fixing member.

8. The housing floor slab thickness measuring instrument according to claim 1, characterized in that, Arc-shaped portions are provided on the first hinge member and the second hinge member, and an arc-shaped surface cooperating with the arc-shaped portion is provided on the first fixing member.

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