Measuring scale for diameter of circumcircle of regular polygon pipeline or diameter of circular pipeline
By designing a measuring device that combines the measurement ruler and angle ruler, the problem that is difficult to measure the diameter of large positive polygon pipelines in the existing technology, realize fast and accurate diameter measurement, convenient operation and no need to help others.
Patent Information
- Application Number
- CN202421062095.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The prior art is difficult to directly measure the diameter of large or extra-large regular polygonal pipelines or rods, especially when the installed pipeline size acceptance is accepted, it is difficult to measure diameters through vernier calipers or tape measure.
Design a measurement device including measurement of a ruler, measuring ruler auxiliary ruler, and angle ruler. The scale of the angle ruler is set on the upper end of the measured ruler, and the measured ruler auxiliary ruler hinges on the symmetrical center line and measurement of the measured angle ruler. At the intersection of the ruler, the diameter measurement of the positive polygon pipeline is achieved through the combination of the angle ruler and the ruler.
The device is easy to operate and low in cost. It can quickly measure the diameter of objects such as large or extra-large cylindrical pipelines or regular polygonal street light poles. One person can complete the measurement with one hand without the assistance of others.
Smart Images
Figure CN222393482U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipeline diameter measurement, and in particular relates to a measuring ruler for the diameter of a regular polygonal pipeline circumscribed circle or a circular pipeline diameter. Background Art
[0002] In engineering construction, we often encounter the construction of pipelines of various specifications. When encountering large-sized cylindrical pipelines or regular polygonal pipelines and rods with diameters of 500mm, 800mm, 1000mm, the diameter is generally determined by measuring the cross section.
[0003] However, for regular polygonal pipelines or rods, it is impossible to directly measure the diameter through the cross section. Especially when inspecting the size of installed pipelines, it is difficult to directly measure the diameter of the pipeline cross section with a vernier caliper or tape measure. Utility Model Content
[0004] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a measuring ruler for the diameter of a regular polygonal pipeline circumscribed circle or a circular pipeline diameter.
[0005] The utility model is implemented by the following technical scheme: a measuring ruler for the diameter of the circumscribed circle of a regular polygonal pipeline or the diameter of a circular pipeline, comprising a measuring ruler straight ruler, a measuring ruler auxiliary ruler and a goniometer; the goniometer is integrally arranged at the upper left end of the measuring ruler straight ruler, the symmetry center line of the goniometer intersects the measuring ruler straight ruler vertically and the intersection is located on the left side of the 0 scale line of the measuring ruler straight ruler; the measuring ruler auxiliary ruler is hinged at the intersection of the symmetry center line of the goniometer and the measuring ruler straight ruler, and the front end of the measuring ruler auxiliary ruler is provided with a pointer for indicating an angle; the measuring ruler straight ruler is engraved with a ruler scale, the goniometer is engraved with an outer circle scale of the goniometer and an inner circle scale of the goniometer, and a diameter calculation formula is printed on the front side of the goniometer.
[0006] Preferably, the scale of the ruler increases from 0 mm to both ends, and the scale values on both sides are positive numbers.
[0007] Preferably, the inner circle of the protractor is semicircular, and the inner circle scale is from 0 degrees to 180 degrees, and the inner circle scale intersecting with the symmetry center line of the protractor is 90 degrees.
[0008] Preferably, the outer ring of the protractor is semicircular, and the outer ring scale decreases from 45 degrees to both sides until 0 degrees, and the outer ring scale intersecting with the symmetry center line of the protractor is 45 degrees.
[0009] Preferably, the measuring ruler auxiliary ruler is connected to the intersection of the symmetry center line of the protractor and the measuring ruler straight ruler through a rotating shaft connector.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] The device is easy to operate and has low cost. It has a fast measurement function for objects such as large and extra-large cylindrical pipelines or regular polygonal street light poles and pipelines, which are not easy to directly measure the diameter. One person can complete the measurement with one hand without the assistance of others. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a schematic diagram of the overall structure of this embodiment;
[0014] Figure 2 This is the measurement schematic diagram of the circular pipeline by the device I;
[0015] Figure 3 This is the measurement diagram of the circular pipeline by the device II;
[0016] Figure 4 This is the schematic diagram of the measurement of the circular pipeline by the device III;
[0017] Figure 5 It is the schematic diagram of the measurement of the circular pipeline by the device IV;
[0018] Figure 6 This is a schematic diagram I of the measurement of a regular polygonal pipeline by the device;
[0019] Figure 7 This is the measurement schematic diagram II of the device for regular polygonal pipelines.
[0020] In the figure: 1- measuring ruler; 2- measuring ruler auxiliary ruler; 2.1- pointer; 3- protractor; 4- ruler scale; 5- protractor outer circle scale; 6- protractor inner circle scale; 7- diameter calculation formula; 8- rotating shaft connector; 9- circular pipeline; 10- regular polygon pipeline. DETAILED DESCRIPTION
[0021] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the restrictive conditions for the implementation of the utility model, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.
[0023] The utility model provides an embodiment:
[0024] like Figure 1 As shown, a measuring ruler for the diameter of the circumscribed circle of a regular polygonal pipeline or a circular pipeline comprises a measuring ruler straight ruler 1, a measuring ruler auxiliary ruler 2 and a goniometer 3; the goniometer 3 is integrally arranged at the upper left end of the measuring ruler straight ruler 1, the symmetry center line of the goniometer 3 intersects the measuring ruler straight ruler 1 vertically and the intersection is located on the left side of the 0 scale line of the measuring ruler straight ruler 1; the measuring ruler auxiliary ruler 2 is hinged at the intersection of the symmetry center line of the goniometer 3 and the measuring ruler straight ruler 1, and the front end of the measuring ruler auxiliary ruler 2 has a pointer 2.1 for angle indication; the measuring ruler straight ruler 1 is engraved with a ruler scale 4, the goniometer 3 is engraved with a goniometer outer circle scale 5 and a goniometer inner circle scale 6, the scales are engraved per millimeter, and a diameter calculation formula 7 is printed on the front of the goniometer.
[0025] In this embodiment, the scale of the ruler scale 4 increases from 0 mm to both ends, and the scale values on both sides are positive numbers. The inner circle of the goniometer 3 is semicircular, and the inner circle scale is from 0 degrees to 180 degrees, and the inner circle scale intersecting with the symmetry center line of the goniometer 3 is 90 degrees. The outer circle of the goniometer 3 is semicircular, and the outer circle scale is extending from 45 degrees to both sides and decreasing to 0 degrees, and the outer circle scale intersecting with the symmetry center line of the goniometer 3 is 45 degrees.
[0026] The measuring ruler auxiliary ruler 2 is connected to the intersection of the symmetry center line of the protractor 3 and the measuring ruler straight ruler 1 through a rotating shaft connector 8.
[0027] When measuring a circular pipeline, first observe the object to be measured. If the diameter of the object to be measured is small (the radius of the object to be measured is less than or equal to the length from the rotating shaft connector 8 on the measuring ruler 1 to the rightmost scale of the measuring ruler 1), there are two measurement methods:
[0028] Method 1: Open the measuring ruler 1 and the measuring ruler auxiliary ruler 2, and clamp them on the circular pipeline 9 to be measured. Figure 2At this time, if the point of intersection between the object to be measured and the measuring ruler straight ruler 1 is on the left side of the zero scale line, adjust the position of the measuring ruler clamping the object to be measured, so that the measuring ruler straight ruler 1 and the measuring ruler auxiliary ruler 2 clamp the object to be measured to form an acute angle, and adjust the point of intersection to the right side of the zero scale line, as shown in the figure below. Figure 3 As shown. Then read out the length of ruler 1. The reading method is to take the zero scale line on ruler 1 as the starting point, and the left scale number plus the right scale number is the length. The left scale number is from the zero scale line to the intersection of the lower edge of ruler 1 and the right edge of auxiliary ruler 2 of the measuring ruler, and the right scale number is from the zero scale line to the intersection of the object being measured. For example Figure 3 As shown, the scale reading at the right tangent point is 36mm, and the reading at the left intersection is also 36mm, so the length is equal to 36mm plus 36mm, a total of 72mm. Then use the tip of pointer 2.1 to determine that the angle reading of the outer ring scale 5 of the protractor is 38°, and substitute it into the diameter calculation formula 7 of the corresponding figure in the area where the pointer is located, that is, the calculation formula of the circle in the left area D = length * tan outer ring reading * 2, and the outer diameter of the object being measured can be quickly calculated through a smart calculator or mobile phone.
[0029] Method 2: First adjust the angle between the measuring ruler 1 and the measuring ruler auxiliary ruler 2 to 90°, that is, the tip of the pointer 2.1 points to the 90° position of the inner scale 6 degrees of the protractor 3, and then place it on the circular pipeline to be measured, so that the measuring ruler 1 and the measuring ruler auxiliary ruler 2 are tangent to the measured object respectively, such as Figure 4 As shown. At this time, observe the position of the tangent point between the object being measured and the measuring ruler 1. If the position is on the right side of the zero scale line of the measuring ruler 1, the length reading is the reading on the left side of the zero scale line plus the reading on the right side of the zero scale line, that is, the scale number from the zero scale line to the intersection of the lower edge of the left measuring ruler 1 and the right edge of the measuring ruler auxiliary ruler 2, plus the scale number from the zero scale line to the right side of the measuring ruler 1. Figure 4 The scale number on the left side is 37mm, and the reading on the right side is 20mm. The length is 37mm on the left side plus 20mm on the right side, which is 57mm in total. After obtaining the length reading, multiply it by 2 to directly get the diameter of the object being measured, without the need for angle reading. If the tangent position of the object being measured and the measuring ruler straight ruler 1 is on the left side of the zero scale line, subtract the scale number at the intersection of the lower edge of the measuring ruler straight ruler 1 and the right edge of the measuring ruler auxiliary ruler 2 from the scale number at the tangent point of the object being measured on the left side, which is the required length reading, and then multiply it by 2 to get the diameter of the object being measured.
[0030] When measuring circular pipes, if the diameter of the object to be measured is large (the radius of the object to be measured is greater than the length from the rotating shaft connector 8 on the measuring ruler 1 to the rightmost scale of the measuring ruler 1), no matter how the tangent point is adjusted, the angle formed by the measuring ruler 1 and the measuring ruler auxiliary ruler 2 is an obtuse angle, and the tangent point between the object to be measured and the measuring ruler 1 is always on the right side of the zero scale, as shown in Figure 5. The diameter measurement method of the object to be measured is to read the measured length of the measuring ruler 1, and the reading method is to add the reading on the right side of the zero scale, and then read the outer circle angle reading at the tip of pointer 2.1, and bring it into the corresponding diameter calculation formula 7 in the area where the pointer is located, and the outer diameter of the object to be measured can be quickly calculated through a smart calculator or mobile phone.
[0031] When measuring the regular polygon pipeline 10, open the measuring ruler straight edge 1 and the measuring ruler auxiliary ruler 2 and fit them on the adjacent sides of the regular polygon to be measured, such as Figure 6 First, you need to read the measuring length of ruler 1, that is, the side length of the regular polygon. There are two ways to read the length of ruler 1: ① The side length of the object being measured does not exceed the right side of the zero mark, such as Figure 6 , the length reading is the number of scales at the vertex of the polygon at the angle between the measuring ruler straight 1 and the measuring ruler auxiliary ruler 2 minus the number of scales at the other vertex of the polygon on the measuring ruler straight 1. It can be seen that the scale of the vertex at the angle is 42mm, and then minus the scale of the other vertex 13mm, the length is 29mm. ② The side length of the object being measured exceeds the right side of the zero scale line, such as Figure 7 , the length reading is the scale number of the polygon vertex at the angle between the measuring ruler straight 1 and the measuring ruler auxiliary ruler 2 plus the scale number of the other vertex of the polygon on the measuring ruler straight 1. It can be seen that the scale of the vertex at the angle is 42mm, plus the scale number of the other vertex is 16mm, the length is 58mm.
[0032] After determining the length, read the tip of pointer 2.1 to determine the outer ring angle reading, and substitute it into the diameter calculation formula 7 corresponding to the area where the pointer is located, as shown in Figure 7 If the pointer tip is in the right area, substitute the regular polygon formula on the right, that is, diameter D = length / sin outer circle degree, and the outer diameter of the object being measured can be quickly calculated using a smart calculator or mobile phone.
[0033] The diameter calculation formula 7 includes two parts, the left part: the calculation formula for the circle is: D = length * tan outer circle reading * 2; the calculation formula for the regular polygon is: D = length / cos outer circle degree * 2; the right part: the calculation formula for the circle is: D = length / tan outer circle degree * 2; the calculation formula for the regular polygon is: D = length / sin outer circle degree.
[0034] The ruler can also measure the angle formed by the two sides of an object. The method of use is to open the measuring ruler straight ruler 1 and the measuring ruler auxiliary ruler 2, and fit them to the object to be measured, so that the adjacent sides of the object to be measured are flush with the measuring ruler straight ruler 1 and the measuring ruler auxiliary ruler 2 respectively. At this time, the inner circle reading pointed by the tip of the pointer 2.1 is the angle between the two sides of the object to be measured.
[0035] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.
Claims
1. A ruler for measuring the diameter of a regular polygonal pipeline circumscribed circle or a circular pipeline diameter, characterized in that: It comprises a measuring ruler (1), an auxiliary measuring ruler (2) and an angle measuring ruler (3); The goniometer (3) is integrally arranged at the upper left end of the measuring ruler (1); the symmetry center line of the goniometer (3) intersects the measuring ruler (1) vertically, and the intersection is located on the left side of the 0 scale line of the measuring ruler (1); the measuring ruler auxiliary ruler (2) is hinged at the intersection of the symmetry center line of the goniometer (3) and the measuring ruler (1); the front end of the measuring ruler auxiliary ruler (2) is provided with an angle indicating pointer (2.1); the measuring ruler (1) is engraved with a ruler scale (4); the goniometer (3) is engraved with a goniometer outer circle scale (5) and a goniometer inner circle scale (6); and the front side of the goniometer is printed with a diameter calculation formula (7).
2. A regular polygon pipeline circumscribed circle diameter or circular pipeline diameter measuring ruler according to claim 1, characterized in that: The scale of the ruler scale (4) increases from 0 mm to both ends, and the scale values on both sides are positive numbers.
3. A regular polygon pipeline circumscribed circle diameter or circular pipeline diameter measuring ruler according to claim 2, characterized in that: The inner circle of the protractor (3) is semicircular, and the inner circle scale is from 0 degree to 180 degrees, and the inner circle scale intersecting with the symmetry center line of the protractor (3) is 90 degrees.
4. A regular polygon pipeline circumscribed circle diameter or circular pipeline diameter measuring ruler according to claim 3, characterized in that: The outer ring of the protractor (3) is semicircular, and the outer ring scale is extended from 45 degrees to both sides and decreases to 0 degrees, and the outer ring scale intersecting the symmetry center line of the protractor (3) is 45 degrees.
5. A ruler for measuring the diameter of a regular polygonal pipeline circumscribed circle or a circular pipeline diameter according to claim 1, characterized in that: The measuring ruler auxiliary ruler (2) is connected to the intersection of the symmetry center line of the protractor (3) and the measuring ruler straight ruler (1) through a rotating shaft connecting member (8).