CN103196352B - Plane angle measuring instrument - Google Patents

Abstract

A plane angle measuring instrument. Design a cylindrical measuring base with a scale marked on its circumference. There is a support rod above the center of the measuring base. The supporting rod can rotate freely on the measuring base. Two symmetrically distributed base pointers are fixed at the end of the supporting rod. The dial is installed on the side, and the dial can rotate freely on the support rod. Half of the dial is light and half is heavy. The scale is marked on its circumference. , The pointers of the two bases and the support rod are in the same plane. Align the 0 scale of the base with a certain reference direction, make the measuring base contact with the plane, the dial and the pointer of the base swing to the inclined direction of the plane, and after stabilization, the direction pointed by the pointer of the base is the inclined direction of the plane Half of the weight is always down, and the inclination of the plane is reflected on the fixed angle pointer, and the scale of the dial pointed by the angle pointer is the inclination angle of the plane.

Description

Plane Angle Measuring Instrument

Technical field

The invention relates to a plane angle measuring device, in particular to a simple plane angle measuring instrument capable of accurately determining the plane inclination direction and having more accurate and convenient readings.

Background technique

At present, the more popular plane angle measuring instruments on the market are basically composed of a gravity pointer, a dial, and a measuring base. When the measuring base is in contact with the plane, the gravity pointer always points to the vertical direction, and the inclination of the plane is reflected on the dial. , the scale of the dial pointed by the gravity pointer is the inclination angle of the plane. However, this plane angle measuring instrument cannot accurately determine the inclination direction of the plane. If the pointer swing direction is inconsistent with the real inclination direction of the plane, the reading will be inaccurate. It is inconvenient to read at the bottom of the plate.

Contents of the invention

In order to overcome the defect that ordinary plane angle measuring instruments cannot accurately determine the direction of plane inclination and the readings are inaccurate and inconvenient, the invention provides a plane angle measuring instrument, which can not only accurately determine the direction of plane inclination, but also read It is more accurate and convenient, and can also read the sub-angles of inclination in all directions.

The technical solution adopted by the present invention to solve the technical problem is: design a cylindrical measuring base, its circumference part is marked with a scale, and the scale division is a symmetrical cross, that is, it is marked as 0 degrees somewhere, and its symmetrical position is also marked as 0 degrees, the middle position between the two 0 degree scales is marked as 90 degrees, and the other positions are uniformly marked with scales from 0 degrees to 90 degrees; there is a support rod above the center of the measurement base, and the support rod can rotate freely on the measurement base; The end of the support rod is close to the measurement base to fix two base pointers. The two base pointers are symmetrically distributed at an angle of 180 degrees and point to the scale graduation of the measurement base; Turn, half of the dial is light and half heavy, and the scale is also marked on its circumference; an angle pointer is fixed on the support rod at the outer central axis of the dial, and the angle pointer points to the upper front of the dial scale, which points to In order to facilitate the reading; the scale of the dial is also a symmetrical cross. When the plane angle measuring instrument is on the horizontal plane, the scale of the dial pointed by the angle pointer is marked as 0 degrees, and its symmetrical position is also marked as 0 degrees, two 0 degrees The middle positions between the scales are all marked as 90 degrees, and the other positions are uniformly marked with scales from 0 degrees to 90 degrees; the dial, the pointers of the two bases and the support rod are in the same plane. Align the 0 scale of the base with a reference direction so that the measuring base is in contact with the plane. Due to the gravity of the dial, the pointer of the dial and the base will follow the support rod around the center of the measuring base and turn to the inclined direction of the plane. After stabilization, the pointer of the base will The pointing direction is the inclination direction of the plane, and the measurement base scale pointed by the base pointer is the angle between the inclination direction of the plane and the reference direction. At the same time, half of the weight of the dial is always down, and the inclination of the plane is reflected in the fixed angle pointer. At this time, the scale of the dial pointed by the angle pointer is the inclination angle of the plane; when the inclination direction of the plane faces away from the person and it is inconvenient to read the angle value, you can first record the measurement pointed by the pointer of the base facing the person at this time For the scale of the base, rotate the base pointer 180 degrees so that the other base pointer points to the scale (since the two base pointers are symmetrically distributed at an angle of 180 degrees and the scale of the measuring base is symmetrical, the scales pointed to by the two base pointers are the same), and the scale is at the same time The disk is also turned to the side facing the person, and the angle value is read after it is stabilized. Due to its symmetrical scale division, the read angle value is the same as the angle value displayed before turning over, which is the value of the inclination angle; The fixed angle pointer design makes the reading always above the front where the angle pointer points, which is convenient for reading; in addition, the base pointer can be turned to different directions to measure the sub-angle of inclination in that direction.

The beneficial effect of the invention is that it can accurately determine the tilt direction of the plane, and the reading is more accurate and convenient, and the sub-angles of the tilt in each direction can be read, and the design structure is simple and practical.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of the present invention.

In the figure 1. Support rod, 2. Angle pointer, 3. Dial, 4. Measuring base, 5. Base pointer.

Detailed ways

In the figure, there is a cylindrical measuring base (4) with a scale marked on its circumference. The middle position between them is marked as 90 degrees, and the scales are uniformly marked in other positions from 0 degrees to 90 degrees; there is a support rod (1) above the center of the measurement base (4), and the support rod (1) can be placed on the measurement base (4 ) to rotate freely; the end of the support rod (1) is close to the measuring base (4) to fix two base pointers (5), and the two base pointers (5) are symmetrically distributed at an angle of 180 degrees, and point to the scale points of the measuring base (4). The scale (3) is installed on one side above the support rod (1), and the dial (3) can rotate freely on the support rod (1). Half of the dial (3) is light and half heavy, and the scale is also marked On its circumference part; An angle pointer (2) is fixed on the support rod (1) at the outer central axis of the dial (3), and the angle pointer (2) points to the scale division of the dial (3) above the front, which points to In order to facilitate the reading; the scale of the dial (3) is also a symmetrical cross. When the plane angle measuring instrument is on the horizontal plane, the scale of the dial (3) pointed by the angle pointer (2) is 0 degrees, and its symmetrical position It is also marked as 0 degrees, and the middle position between the two 0 degree scales is marked as 90 degrees, and the other positions are uniformly marked with scales from 0 degrees to 90 degrees; the dial (3), the two base pointers (5) and the support rod ( 1) In the same plane. Align the 0-degree scale of the measuring base (4) with a certain reference direction, so that the measuring base (4) is in contact with the plane. Due to the gravity of the dial (3), the dial (3) and the pointer (5) of the base will follow The support rod (1) turns around the center of the measuring base (4) and turns to the inclined direction of the plane. After stabilization, the direction pointed by the base pointer (5) is the inclined direction of the plane, and the scale of the measuring base (4) pointed by the base pointer (5) is is the angle between the tilt direction of the plane and the reference direction, and because half of the weight of the dial (3) is always down, the tilt of the plane is reflected on the fixed angle pointer (2), at this time the angle pointer (2) points to the scale The scale on the disk (3) is the inclination angle of the plane; when the inclination direction of the plane faces away from the person and it is inconvenient to read the angle value, you can first write down the measurement base (4) pointed by the base pointer (5) facing the person at this time. ), rotate the base pointer (5) 180 degrees, and make the other base pointer (5) point to the scale (because the two base pointers (5) are symmetrically distributed at an angle of 180 degrees and the scale graduations of the measuring base (4) are symmetrical, The two base pointers (5) point to the same scale), and the dial (3) is turned to the side facing the person at the same time, and the angle value is read after it is stabilized. Due to its symmetrical scale division, the angle value read It is the same as the value of the angle displayed before flipping, which is the value of the tilt angle; the fixed angle pointer (2) is designed so that the reading is always above the front where the angle pointer (2) points, which is convenient for reading; in addition, the base can also be The pointer (5) turns to different directions and measures the sub-angle of inclination in that direction.

Claims (5)

1. A plane angle measuring instrument is characterized in that: a cylindrical measuring base is designed, its circumference part is marked with a scale, a support rod is arranged above the center of the measuring base, the supporting rod can rotate freely on the measuring base, and the end of the supporting rod Two base pointers distributed symmetrically at an angle of 180 degrees are fixed close to the measuring base, and a dial is installed on one side above the support rod. The dial can rotate freely on the support rod. Half of the dial is light, half of which is heavy, and the heavy Half is always down, and an angle pointer is fixed on the support rod at the outer central axis of the dial. 2. The plane angle measuring instrument according to claim 1, characterized in that: the scale graduation of the measuring base is a symmetrical cross, that is, a certain place is marked as 0 degrees, and its symmetrical position is also marked as 0 degrees, between the two 0 degree scales The middle position between them is marked as 90 degrees, and the other positions are uniformly marked with scales from 0 degrees to 90 degrees. 3. The plane angle measuring instrument according to claim 1, characterized in that: the dial scale is marked on its circumference, and the scale division is a symmetrical cross. When the plane angle measuring instrument is on the horizontal plane, the dial pointed to by the angle pointer The scale is marked as 0 degrees, and its symmetrical position is also marked as 0 degrees. The middle position between the two 0 degree scales is marked as 90 degrees, and the other positions are uniformly marked with scales from 0 degrees to 90 degrees. 4. The plane angle measuring instrument according to claim 1, characterized in that: the angle pointer points to the scale graduation of the dial above the front, and its pointing is to facilitate the reading as the criterion. 5. The plane angle measuring instrument according to claim 1, characterized in that: the dial, the pointers of the two bases and the support rod are in the same plane.