A measuring scale for measuring the angle of a stairway

Abstract

The utility model discloses a measuring scale convenient to measure stair angle belongs to the field of measurement technology, including L type retaining seat and two storage frame, and the inside wall of L type retaining seat horizontal direction and vertical direction is connected with two storage frame respectively, and the inside wall of storage frame end portion is connected with distance measuring sensor through the closing seat, and the closing seat is connected with distance measuring piston board through two hydraulic push rod, and the end of distance measuring piston board is connected with the wall frame, and the inside of wall frame is provided with the bevel pasting subassembly, and the path hole that is used for the light of distance measuring sensor to pass through without shelter is set up on distance measuring piston board. The utility model discloses through the setting of two vertical distance measuring piston boards, can utilize the geometric principle that forms right triangle with stair hypotenuse, through measuring the length of two right angle edges, then utilizes inverse trigonometric function to calculate the angle, and this method is absolutely accurate in mathematics, avoids the error that brings to the visual inspection or traditional protractor measurement by experience.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, and in particular to a measuring ruler that facilitates the measurement of staircase angles. Background Technology

[0002] Surveying tools are widely used in the construction industry and are an indispensable part of ensuring the safety and reliability of construction.

[0003] Currently, when measuring the angle of stairs, a protractor is usually used for direct measurement. However, the angle boundary at the bottom of the stairs is often not clear enough, resulting in coarse and inaccurate data. In addition, the angle measurement of stairs is mostly carried out during the construction process. When measuring the overall angle of the stairs, a large measuring tool is required, which makes it inconvenient to use during the construction process. Based on this, a measuring ruler that is convenient for measuring the angle of stairs is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a measuring ruler that facilitates the measurement of staircase angles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A measuring ruler for measuring stair angles includes an L-shaped base and two storage frames. The horizontal and vertical inner walls of the L-shaped base are connected to the two storage frames respectively. A distance sensor is connected to the inner wall of the end of each storage frame via a sealing seat. A distance measuring piston plate is connected to the sealing seat via two hydraulic push rods. A wall-blocking frame is connected to the end of the distance measuring piston plate. An inclined surface fitting component is provided inside the wall-blocking frame. A path hole is provided on the distance measuring piston plate to allow unobstructed light from the distance measuring sensor to pass through.

[0007] Preferably, the inner sidewalls at both ends of the L-shaped mounting base are respectively fitted and fixedly installed with two storage frames, and the two storage frames are arranged perpendicular to each other.

[0008] Preferably, the inner sidewall of the end of the storage frame located within the L-shaped retaining seat is fixedly connected to the ranging sensor via a sealing seat.

[0009] Preferably, the distance measuring sensor and the path hole of the distance measuring piston plate, which are located in the same storage frame, are on the same axis.

[0010] Preferably, the ranging piston plate is slidably connected to the inner sidewall of the storage frame, and the end of the ranging piston plate is fixedly connected to the end of the wall-blocking frame.

[0011] Preferably, the inclined surface bonding assembly includes two telescopic push plates fixed to the end of the ranging piston plate, and the telescopic push plates are rotatably connected to a concave abutment plate via a pin.

[0012] Preferably, both the inner and outer ends of the concave abutment plate are flat surfaces, and a torsion spring is sleeved on the outer side wall of the pin.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This solution uses two perpendicular measuring piston plates to form a right triangle with the hypotenuse of the staircase. By measuring the lengths of the two right-angled sides and then using inverse trigonometric functions, the angle can be calculated. This method is mathematically absolutely accurate and avoids errors caused by relying on experience, visual estimation, or traditional protractors.

[0015] 2. This solution uses a storage box to measure the slope of any section of the staircase using its internal components, without relying on the overall structure of the staircase, making it convenient to perform local calibrations at any time during construction.

[0016] 3. This solution, through the design of torsion spring and concave abutment plate, ensures that the concave abutment plate can be pushed flat and fit against the inclined surface of the stairs, whether in the horizontal or vertical direction. This cleverly eliminates the measurement error caused by the gap between the concave abutment plate and the inclined surface, and is a key mechanical guarantee for achieving high-precision measurement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a measuring ruler for facilitating the measurement of stair angles proposed in this utility model;

[0018] Figure 2 This utility model provides an assembly drawing of a measuring ruler for facilitating the measurement of stair angles.

[0019] Figure 3 This is a cross-sectional view of the L-shaped fixed seat in a measuring ruler for facilitating the measurement of stair angles proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the storage frame in a measuring ruler for facilitating the measurement of stair angles, as proposed in this utility model.

[0021] Figure 5 This is an assembly drawing of the storage frame in a measuring ruler for facilitating the measurement of stair angles, as proposed in this utility model.

[0022] Figure 6 This is a schematic diagram of the inclined surface fitting component in a measuring ruler for facilitating the measurement of stair angles, as proposed in this utility model.

[0023] In the diagram: 1. L-shaped retaining seat; 2. Storage frame; 3. Enclosed seat; 4. Distance sensor; 5. Hydraulic push rod; 6. Distance measuring piston plate; 7. Wall-stopping frame; 8. Telescopic push plate; 9. Pin shaft; 10. Torsion spring; 11. Concave abutment plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example: Refer to Figures 1 to 6 A measuring ruler for measuring the angle of stairs includes an L-shaped fixed base 1 and two storage frames 2. The inner sidewalls of the L-shaped fixed base 1 in the horizontal and vertical directions are respectively connected to the two storage frames 2. The inner sidewalls at the ends of the storage frames 2 are connected to a distance sensor 4 through a closed seat 3. The closed seat 3 is connected to a distance measuring piston plate 6 through two hydraulic push rods 5. The end of the distance measuring piston plate 6 is connected to a wall-blocking frame 7. An inclined surface fitting component is provided inside the wall-blocking frame 7. The distance measuring piston plate 6 has a path hole for the unobstructed passage of light from the distance measuring sensor 4.

[0026] Furthermore, the inner sidewalls at both ends of the L-shaped retaining base 1 are respectively fitted and fixedly installed with the two storage frames 2. The two storage frames 2 are set perpendicular to each other. The inner sidewall of the end of the storage frame 2 located in the L-shaped retaining base 1 is fixedly connected to the ranging sensor 4 through the sealing base 3. The ranging sensor 4 located in the same storage frame 2 and the path hole of the ranging piston plate 6 are on the same axis. The ranging piston plate 6 is slidably connected to the inner sidewall of the storage frame 2. The end of the ranging piston plate 6 is fixedly connected to the end of the wall-stopping frame 7. The inclined surface fitting assembly includes two telescopic push plates 8 fixed on the end of the ranging piston plate 6. The telescopic push plates 8 are rotatably connected to a concave abutment plate 11 through a pin 9. The inner and outer ends of the concave abutment plate 11 are both flat surfaces. A torsion spring 10 is sleeved on the outer sidewall of the pin 9.

[0027] It should be noted that: when the hydraulic push rods 5 inside the two storage frames 2 are activated, the horizontal and vertical measuring piston plates 6 are pushed outward. At this time, the two measuring piston plates 6 in the horizontal and vertical directions will gradually combine with the diagonal line on the inclined surface of the staircase to form a right-angled triangle. After the wall-stopping frame 7 contacts and stops with the inclined side wall of the staircase, the telescopic push plate 8 is controlled to push the concave abutment plate 11 out of the wall-stopping frame 7, so that the concave abutment plate 11 contacts the inclined surface of the staircase. During this process, the torsion springs 10 on the pins 9 on both sides of the horizontally moving concave abutment plate 11 will apply an upward torsional force, so that the end face of the horizontally pushed concave abutment plate 11 contacts the staircase. The inclined surface of the staircase is flattened and fitted, while the torsion springs 10 on both sides of the concave abutment plate 11, which moves vertically, apply a downward torsional force, so that the end face of the concave abutment plate 11, which is pushed upward, is flattened and fitted with the inclined surface of the staircase. At this time, the distance sensor 4 on the closed seat 3 measures the distance to the back end of the concave abutment plate 11 by laser. In the design process, the distance between the two distance sensors 4 is constant and known. Then, by combining the distances measured by the two distance sensors 4 with the horizontal and vertical directions of the inclined surface of the staircase, the lengths of the opposite side and adjacent side (two right-angled sides) of the right triangle formed by the combination can be obtained. Then, the angle of this section of the inclined surface of the staircase can be calculated by using inverse trigonometric functions.

[0028] The further advantage of the above method is that by utilizing the right-angled triangle characteristics of the stair slope with the horizontal and vertical planes, the angle measurement is transformed into a length measurement that is easy to measure. Then, the angle of the stair is calculated using inverse trigonometric functions. This measuring device can measure the angle of any segment of the stair slope. It is convenient to carry during construction and facilitates the calibration of the stair angle of the construction segment during construction, ensuring that the overall stair slope angle remains consistent.

[0029] Note: The trigonometric function formulas are sinθ = opposite side / hypotenuse, cosθ = adjacent side / hypotenuse, and tanθ = opposite side / adjacent side.

[0030] In use, the L-shaped retaining seat 1 is placed below the staircase to be measured, positioning it on a horizontal surface at a certain height. Then, the hydraulic push rods 5 within the two storage frames 2 are activated, pushing the horizontal and vertical measuring piston plates 6 outwards. At this point, the two measuring piston plates 6, horizontally and vertically, gradually combine with the inclined line on the staircase's slope to form a right-angled triangle. After the abutment frame 7 contacts and stops against the inclined side wall of the staircase, the telescopic push plate 8 is controlled to push the concave abutment plate 11 out of the abutment frame 7, causing the concave abutment plate 11 to contact the inclined surface of the staircase. During this process, the torsion springs 10 on the pins 9 on both sides of the horizontally moving concave abutment plate 11 apply an upward torsional force, ensuring the end face of the horizontally pushed concave abutment plate 11 is flat and in contact with the inclined surface of the staircase. Meanwhile, the torsion springs 10 on both sides of the vertically moving concave abutment plate 11 apply a downward torsional force. This allows the concave abutment plate 11, pushed upwards, to fit smoothly against the inclined surface of the staircase. At this point, the distance sensor 4 on the closed seat 3 measures the distance to the back end of the concave abutment plate 11 using a laser. During the design process, the distance between the two distance sensors 4 is constant and known. By combining the distances measured by the two distance sensors 4 with the horizontal and vertical directions of the inclined surface of the staircase, the lengths of the opposite and adjacent sides (two right-angled sides) of the right triangle formed can be obtained. Then, the angle of this section of the inclined surface of the staircase can be calculated using inverse trigonometric functions. In this way, the right-angled triangle characteristics of the inclined surface of the staircase with the horizontal and vertical planes can be used to transform the angle measurement into a length measurement that is easy to measure. The angle of the staircase can then be calculated using inverse trigonometric functions. This measuring device can measure the angle of any section of the inclined surface of the staircase. It is portable during construction and facilitates the calibration of the staircase angle of the construction section during construction, ensuring that the overall inclined surface angle of the staircase remains consistent.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A measuring ruler for facilitating the measurement of stair angles, comprising an L-shaped retaining base (1) and two storage frames (2), characterized in that, The inner walls of the L-shaped mounting base (1) in the horizontal and vertical directions are connected to two storage frames (2) respectively. The inner wall of the end of the storage frame (2) is connected to a distance sensor (4) through a sealing seat (3). The sealing seat (3) is connected to a distance measuring piston plate (6) through two hydraulic push rods (5). The end of the distance measuring piston plate (6) is connected to a wall-blocking frame (7). An inclined surface fitting component is provided inside the wall-blocking frame (7). The distance measuring piston plate (6) has a path hole for the unobstructed passage of light from the distance measuring sensor (4).

2. A measuring ruler for facilitating the measurement of staircase angles according to claim 1, characterized in that, The inner walls of both ends of the L-shaped mounting base (1) are respectively fitted and fixed to the two storage frames (2), and the two storage frames (2) are set perpendicular to each other.

3. A measuring ruler for facilitating the measurement of staircase angles according to claim 1, characterized in that, The inner side wall of the end of the storage frame (2) located in the L-shaped fixed seat (1) is fixedly connected to the distance sensor (4) through the closed seat (3).

4. A measuring ruler for facilitating the measurement of staircase angles according to claim 1, characterized in that, The path hole of the ranging sensor (4) and the ranging piston plate (6) located in the same storage frame (2) are on the same axis.

5. A measuring ruler for facilitating the measurement of staircase angles according to claim 1, characterized in that, The distance measuring piston plate (6) is slidably connected to the inner wall of the storage frame (2), and the end of the distance measuring piston plate (6) is fixedly connected to the end of the wall-blocking frame (7).

6. A measuring ruler for facilitating the measurement of staircase angles according to claim 1, characterized in that, The inclined surface bonding assembly includes two telescopic push plates (8) fixed to the end of the ranging piston plate (6), and the telescopic push plates (8) are rotatably connected to a concave abutment plate (11) via a pin (9).

7. A measuring ruler for facilitating the measurement of staircase angles according to claim 6, characterized in that, The concave abutment plate (11) has flat surfaces at both its inner and outer ends, and a torsion spring (10) is sleeved on the outer side wall of the pin (9).

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