Floor flatness measuring instrument and measuring method thereof

Abstract

The present invention discloses a floor flatness measuring instrument and a measuring method thereof, for measuring the flatness of a floor. The floor flatness measuring instrument includes an elongated bracket, a fixing base, a dial indicator, and two height adjustment bolts. The elongated bracket has a plurality of fixing holes symmetrically distributed on both sides of the elongated bracket. The fixing base is fixed at the center of the elongated bracket. The dial indicator is longitudinally fixed to the fixing base. The two height adjustment bolts are disposed at both ends of the elongated bracket. Thus, the flatness of the floor can be accurately measured.

Description

Technical Field

[0001] The present invention relates to the technical field of floor measurement, and in particular to a floor flatness measuring instrument and a method for measuring the flatness of a floor using the floor flatness measuring instrument. Background Art

[0002] Raised floors are installed on the ground or floor in an elevated manner so that there is a certain amount of space between the raised floor panels and the ground. This space can be used to lay wires or return air ducts.

[0003] The flatness of raised floors must meet certain specifications (see CNS10678). Common methods for measuring the flatness of raised floors are difficult to operate and have low accuracy.

[0004] Therefore, the main purpose of the present invention is to provide a floor flatness measuring instrument and a measuring method thereof to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a floor flatness measuring instrument and a measuring method thereof, which can accurately measure the flatness of a floor.

[0006] To achieve at least one of the aforementioned advantages or other advantages, one embodiment of the present invention provides a floor flatness measuring instrument. The floor flatness measuring instrument includes a long bracket, a fixing base, a dial indicator, and two height-adjustable bolts.

[0007] The long bracket has a plurality of fixing holes, which are symmetrically distributed on both sides of the long bracket. The fixing base is fixed to the center of the long bracket, and the dial indicator is fixed longitudinally on the fixing base. Two height adjustment bolts are respectively set at both ends of the long bracket. The height adjustment bolts are rotated to adjust the distance between the long bracket and the floor and the horizontal state of the long bracket.

[0008] In some embodiments, a floor flatness measuring instrument is used to measure the flatness of a floor.

[0009] In some embodiments, the length of the elongated bracket is greater than 4 / 5 of the diagonal length of the floor.

[0010] In some embodiments, two height adjustment bolts are placed at both ends of the diagonal line of the floor during measurement, and the measuring head of the dial indicator is located at the midpoint of the diagonal line of the floor.

[0011] In some embodiments, the fixing base has a longitudinal groove, and the dial indicator includes a rear cover with ears, which is fixed in the longitudinal groove by screw locking.

[0012] In some embodiments, two height adjustment bolts are respectively screwed into the fixing holes at both ends of the elongated bracket.

[0013] In some embodiments, the height adjustment bolt is a threaded bolt.

[0014] To achieve at least one of the aforementioned advantages or other advantages, another embodiment of the present invention further provides a method for measuring the flatness of a floor using a floor flatness measuring instrument. The method includes the following steps: 1) fixing two height adjustment bolts through fixing holes at both ends of an elongated bracket according to the size of the floor, and adjusting the two height adjustment bolts to the same height so that the elongated bracket is in a horizontal state; 2) performing a three-point zeroing operation on the floor flatness measuring instrument; 3) placing the floor flatness measuring instrument on the floor so that the two height adjustment bolts are located on one diagonal of the floor, and recording a first measurement value of the dial indicator; 4) rotating the floor flatness measuring instrument horizontally by 90 degrees so that the two height adjustment bolts are located on the other diagonal of the floor, and recording a second measurement value of the dial indicator; 5) calculating the difference between the first and second measurement values.

[0015] Furthermore, the three-point zeroing operation includes placing two height adjustment bolts of the floor flatness measuring instrument on a steel ruler and simultaneously returning the measured value of the dial indicator to zero.

[0016] Furthermore, according to the size of the floor, the step of fixing two height adjustment bolts to the two ends of the long bracket through the fixing holes is to make the distance between the two height adjustment bolts greater than 4 / 5 of the diagonal length of the floor.

[0017] Therefore, by using the floor flatness measuring instrument and the measuring method provided by the present invention, the flatness of the floor can be accurately measured, and the height can be adjusted through the height adjustment bolt, making the floor flatness measurement operation easier.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, which can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites preferred embodiments and describes them in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of the floor flatness measuring instrument of the present invention;

[0021] Figure 2 yes Figure 1 The structural diagram on the back;

[0022] Figure 3 yes Figure 2 An enlarged schematic diagram of point A in the middle; and

[0023] Figure 4 It is a schematic flow chart of the method for measuring floor flatness of the present invention.

[0024] Reference numerals:

[0025] 10-Floor flatness measuring instrument; 12-Floor; 14-Long bracket; 16-Fixed seat; 18-Dial indicator; 20-Height adjustment bolt; 1402-Fixed hole; 1602-Longitudinal groove; 1802-Rear cover with ears; 1804-Ear; 1806-Measuring head. DETAILED DESCRIPTION

[0026] The specific structural and functional details disclosed herein are merely representative and are for the purpose of describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to only the embodiments set forth herein.

[0027] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positions based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variations thereof are intended to cover non-exclusive inclusions.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] The terms used herein are intended only to describe specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a", "an", "an item" used herein are also intended to include the plural. It should also be understood that the terms "comprise" and / or "include" used herein specify the presence of stated features, integers, steps, operations, units and / or components, and do not preclude the presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0030] See also Figure 1 、 Figure 2 and Figure 3 , Figure 1 1 is a schematic structural diagram of the floor flatness measuring instrument 10 of the present invention. Figure 2 yes Figure 1 The structural diagram on the back. Figure 3 yes Figure 2 To achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides a floor flatness measuring instrument 10 for measuring the flatness of a floor 12. Figure 1 As shown, the floor flatness measuring instrument 10 includes an elongated bracket 14, a fixing base 16, a dial indicator 18, the dial indicator 18 is fixed to the fixing base 16, and two height adjustment bolts 20, the two height adjustment bolts 20 are supported at both ends of the elongated bracket 14. Further, the elongated bracket 14 has a plurality of fixing holes 1402. Figure 2 As shown, the fixing base 16 has a longitudinal groove 1602 and the dial indicator 18 includes a rear cover 1802 with ears.

[0031] Among them, one end of the height adjustment bolt 20 is against the floor 12, and the other end is screwed into the fixing hole 1402 on the elongated bracket 14 to mount the elongated bracket 14 on the floor 12. The height adjustment bolt 20 is adjusted by rotating its extension distance relative to the elongated bracket 14 to keep the elongated bracket 14 in a horizontal state, and adjusts the distance between the elongated bracket 14 and the floor 12 so that the measuring head 1806 of the dial indicator 18 contacts the surface of the floor 12. The fixing holes 1402 are symmetrically distributed on both sides of the elongated bracket 14 to accommodate the height adjustment bolt 20. The fixing seat 16 is fixed to the center of the elongated bracket 14 by screw locking. As shown Figure 3 As shown, the dial indicator 18 is fixed in the longitudinal groove 1602 of the fixing base 16 by screw locking through the ear portion 1804 of the ear cover 1802, so that the dial indicator 18 is longitudinally fixed on the long bracket 14 for measurement.

[0032] In this embodiment, the elongated bracket 14 is a square metal tube to provide sufficient structural strength, and the height adjustment bolt 20 is an embossed bolt to facilitate user operation. However, the present invention is not limited to this. The elongated bracket 14 can also be a U-shaped metal strip, and the height adjustment bolt 20 can also be a bolt whose screwing position can be adjusted by a nut to secure the elongated bracket 14 and control the desired height. Furthermore, the fixing base 16 can also be fixed to the elongated bracket 14 by welding.

[0033] In this embodiment, the length of the elongated bracket 14 is greater than 4 / 5 of the diagonal length of the floor 12 to ensure that the height adjustment bolts 20 are located near the corners of the floor 12, thereby accurately obtaining the flatness value of the floor 12. However, this embodiment is not limited to this. Due to the varying sizes of various floorboards 12, the length of the elongated bracket 14 can be designed to be greater than 4 / 5 of the diagonal length of the largest floorboard 12. When measuring smaller floors 12, adjustments can be made through the fixing holes 1402 on the elongated bracket 14.

[0034] In addition, for a square floor, it is only necessary to ensure that the measuring head 1806 of the dial indicator 18 is located at the center of the floor 12 during two measurements (along different diagonal directions).

[0035] See also Figure 4 , Figure 4 1 is a flow chart of a method for measuring the flatness of a floor 12 according to the present invention. To achieve at least one of the aforementioned advantages or other advantages, another embodiment of the present invention further provides a method for measuring the flatness of a floor 12 using a floor flatness measuring instrument 10. The measuring steps are as follows:

[0036] Step 1 (S01): According to the size of the floor, fix two height adjustment bolts to the two ends of the long bracket through the fixing holes, and adjust the two height adjustment bolts to the same height so that the long bracket is in a horizontal state.

[0037] Step 2 (S02): Perform a three-point zeroing operation on the floor flatness measuring instrument.

[0038] Step 3 (S03): Place the floor flatness measuring instrument on the floor so that the two height adjustment bolts are located on a diagonal line of the floor, and record the first measured value of the dial indicator.

[0039] Step 4 (S04): Rotate the floor flatness measuring instrument horizontally by 90 degrees so that the two height adjustment bolts are located on the other diagonal line of the floor, and record the second measured value of the dial indicator.

[0040] Step five (S05): taking the difference between the first measured value and the second measured value.

[0041] In step 2 (S02), the three-point zeroing operation involves placing the two height adjustment bolts of the floor flatness measuring instrument on a steel ruler so that the bottom ends of the two height adjustment bolts and the measuring head of the dial indicator are aligned (i.e., on the same horizontal plane), and simultaneously returning the dial indicator's measured value to zero. The steel ruler has an accuracy of 1 / 1000 mm (0.1 μm).

[0042] In addition, in this embodiment, the difference is less than 0.5 mm, which is considered acceptable. However, this value may vary depending on the acceptance standard.

[0043] To further illustrate, during measurement, the distance between the two height adjustment bolts 20 is greater than 4 / 5 of the diagonal length of the floor 12 to ensure that the height adjustment bolts 20 are positioned close to the corners of the floor 12, thereby obtaining an accurate flatness value of the floor 12.

[0044] Furthermore, before measurement, the dial indicator 18, long bracket 14, and steel ruler should be regularly maintained and inspected to ensure the accuracy of the floor flatness measuring instrument 10. After removing the dial indicator 18, fixed bracket 14, height adjustment bolt 20, and steel ruler, they should be cleaned and verified to be free of any debris. The floor to be measured 12 should also be cleaned and verified to be free of any debris to ensure measurement accuracy.

[0045] It should be noted that in the above measurement steps, the height adjustment bolt 20 can be threaded into different fixing holes 1402 to measure the flatness of floors 12 of different sizes. In one embodiment, the elongated bracket 14 is a retractable metal tube that can be retracted to reduce its size for easy storage.

[0046] In summary, the floor flatness measuring instrument 10 and method provided by the present invention can accurately measure the flatness of the floor 12 , and can be adjusted through the height adjustment bolt 20 , making the measurement operation of the floor 12 flatness easier.

[0047] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present profession can make slight changes or modifications to equivalent embodiments of equivalent changes using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A floor flatness measuring instrument suitable for measuring elevated floors that meet standards, characterized by: The floor flatness measuring instrument comprises: An elongated bracket having a plurality of fixing holes, wherein the plurality of fixing holes are symmetrically distributed on both sides of the elongated bracket; a fixing seat fixed at the center of the elongated bracket; a dial indicator, longitudinally fixed to the fixing seat; and Two height adjustment bolts are provided at both ends of the long bracket, and the two height adjustment bolts are screwed into the fixing holes at both ends of the long bracket.

2. The floor flatness measuring instrument according to claim 1, wherein: The fixing seat has a longitudinal groove, and the dial indicator includes a rear cover with ears, and the rear cover with ears is fixed in the longitudinal groove by screw locking.

3. The floor flatness measuring instrument according to claim 1, wherein: The height adjustment bolt is an embossed bolt.

4. The floor flatness measuring instrument according to claim 1, wherein: The floor flatness measuring instrument is used to measure the flatness of a floor.

5. The floor flatness measuring instrument according to claim 4, wherein: The length of the elongated bracket is greater than 4 / 5 of the diagonal length of the floor.

6. The floor flatness measuring instrument according to claim 4, wherein: The two height adjustment bolts are respectively placed at the two ends of the diagonal line of the floor during measurement, and a measuring head of the dial indicator is located at the midpoint of the diagonal line of the floor.

7. A method for measuring the flatness of a floor, suitable for measuring elevated floors that meet standards, characterized in that: The method comprises the following steps: According to the size of the floor, two height adjustment bolts are fixed to the two ends of the long bracket through the fixing holes, and the two height adjustment bolts are adjusted to the same height so that the long bracket is in a horizontal state; Perform three-point zeroing operation on the floor flatness measuring instrument; Place the floor flatness measuring instrument on the floor so that the two height adjustment bolts are located on a diagonal line of the floor, and record a first measured value of the dial indicator; Rotate the floor flatness measuring instrument horizontally by 90 degrees so that the two height adjustment bolts are located on another diagonal line of the floor, and record a second measured value of the dial indicator; and A difference between the first measured value and the second measured value is obtained.

8. The method according to claim 7, wherein The three-point zeroing operation includes: placing two height adjustment bolts of the floor flatness measuring instrument on a steel ruler, and simultaneously returning the measured value of the dial indicator to zero.

9. The method according to claim 7, wherein According to the size of the floor, the step of fixing the two height adjustment bolts to the two ends of the long bracket through the fixing holes is such that the distance between the two height adjustment bolts is greater than 4 / 5 of the diagonal length of the floor.

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