Precise height measuring ruler for surveying and mapping

Abstract

The utility model discloses a precise height measuring ruler for surveying and mapping, which belongs to the technical field of surveying and mapping instruments, and can solve the problems that the height measuring precision is limited, the precision requirement required by precise engineering measurement cannot be met and the vertical height cannot be measured when a steel tape is used for measuring the height of a precise instrument in the prior art. The height measuring ruler comprises: a columnar main ruler, the column body of which is provided with first scales, the top of which is provided with a base top structure, and the bottom of which is provided with a base structure; the cylindrical auxiliary ruler is slidably arranged on the cylindrical main ruler in a sleeving manner, a second scale is arranged on a cylindrical body of the cylindrical auxiliary ruler, and the precision of the second scale is higher than that of the first scale; the top end of the base top structure and the bottom end of the base structure are measuring base points of the cylindrical auxiliary ruler. And the positioning piece is used for positioning the cylindrical auxiliary ruler when the cylindrical auxiliary ruler slides to the measuring position. The device is used for measuring the precision instrument.

Description

Technical Field

[0001] The utility model relates to a precision height measuring ruler for surveying and mapping, belonging to the technical field of surveying and mapping instruments. Background Art

[0002] GNSS (Global Navigation Satellite System) controlled surveys require precise antenna height measurements, while total station trigonometric height measurements require precise instrument and prism height measurements. However, these measurements are currently often made with steel tape measures, which have limited accuracy and cannot meet the precision requirements of precision engineering surveys. Summary of the Invention

[0003] The utility model provides a precision height measuring ruler for surveying and mapping, which can solve the problem that when a steel tape measure is used for precision instrument height measurement, the measurement accuracy is limited, the accuracy requirement required for precision engineering measurement cannot be met, and the vertical height cannot be measured.

[0004] The utility model provides a precision height measuring ruler for surveying and mapping, the height measuring ruler comprising:

[0005] A columnar main ruler, with a first scale provided on its column body, a base structure provided on its top, and a base structure provided on its bottom;

[0006] A cylindrical secondary ruler is slidably mounted on the cylindrical main ruler, and a second scale is provided on the cylindrical body of the secondary ruler. The accuracy of the second scale is higher than that of the first scale. The top end of the top structure and the bottom end of the base structure serve as the measurement base points of the cylindrical secondary ruler.

[0007] The positioning member is used to position the cylindrical secondary ruler when the cylindrical secondary ruler slides to the measuring position.

[0008] Optionally, the base structure is a columnar body; the material of the columnar body is a permanent magnetic material.

[0009] Optionally, the height measuring stick further includes:

[0010] The ruler column is fixed at the bottom, and the top end of the ruler column is connected to the base structure.

[0011] Optionally, the bottom end of the bottom fixed ruler column is made of permanent magnetic material.

[0012] Optionally, a screw hole is provided at the top end of the bottom fixed ruler column, and an external thread is provided on the side wall of the base structure; the external thread of the base structure is matched and connected with the screw hole of the bottom fixed ruler column.

[0013] Optionally, the height measuring stick further includes:

[0014] The middle fixed ruler column is arranged between the bottom fixed ruler column and the columnar main ruler, with its bottom end connected to the top end of the bottom fixed ruler column, and its top end connected to the base structure of the columnar main ruler; the middle fixed ruler column and the bottom fixed ruler column have the same height.

[0015] Optionally, there are multiple middle fixed ruler posts, and the multiple middle fixed ruler posts are connected end to end in sequence to form a long strip.

[0016] Optionally, the middle fixed ruler column, the bottom fixed ruler column and the columnar main ruler are all threadedly connected.

[0017] Optionally, the positioning member is a fastening bolt.

[0018] Optionally, the top structure and the base structure of the columnar main ruler are both cylinders.

[0019] The beneficial effects produced by the utility model include:

[0020] The utility model provides a precision height measuring ruler for surveying and mapping. It utilizes a columnar main ruler, a cylindrical auxiliary ruler and a positioning piece to form a columnar sleeve vernier caliper. It can achieve high-precision height measurement of a precision instrument. The accuracy can reach that of a vernier caliper and the vertical height can be directly measured.

[0021] The precision height measuring ruler for surveying and mapping provided by the utility model has a central fixed ruler column detachably connected to the lower end of the columnar main ruler, and a bottom fixed ruler column detachably connected to the lower end of the central fixed ruler column. This allows the number of connected central fixed ruler columns to be adjusted according to the height of the instrument to be measured, thereby adjusting the measuring height of the height measuring ruler. This makes the height measuring ruler adaptable to a variety of equipment to be measured, expanding its applicability. Furthermore, the height measuring ruler can be mass-produced, has low production costs, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the assembly structure of a columnar main ruler and a cylindrical secondary ruler provided in an embodiment of the present utility model;

[0023] Figure 2 A schematic diagram of the structure of a bottom fixed ruler column provided in an embodiment of the present utility model;

[0024] Figure 3 This is a structural diagram of the middle fixed scale column provided in an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Columnar main ruler; 2. Cylindrical auxiliary ruler; 3. Fastening bolts; 4. Base structure; 5. Top of base; 6. Base structure; 7. Bottom of base; 8. Bottom fixed ruler column; 9. Bottom of base column; 10. Middle fixed ruler column; 11. Screw hole; 12. Screw. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the embodiments, but the present invention is not limited to these embodiments.

[0028] The present invention provides a precision height measuring ruler for surveying and mapping. Figures 1 to 3 As shown, the height measuring ruler includes:

[0029] The columnar main ruler 1 has a first scale on its column, a top structure 4 on its top, and a base structure 6 on its bottom.

[0030] In practical applications, the cylindrical main ruler 1 may be cylindrical or prismatic, which is not limited in the embodiment of the present invention.

[0031] The cylindrical secondary ruler 2 is slidably mounted on the cylindrical main ruler 1, and a second scale is provided on the column. The accuracy of the second scale is higher than that of the first scale. The top of the base structure 4 (i.e., the top of the base 5) and the bottom of the base structure 6 (i.e., the bottom of the base 7) are the measurement base points of the cylindrical secondary ruler 2.

[0032] The positioning member is used to position the cylindrical secondary ruler 2 when the cylindrical secondary ruler 2 slides to the measuring position.

[0033] In practical applications, the positioning member may be a fastening bolt 3. When measuring height, after the cylindrical secondary scale 2 stops sliding, the fastening bolt 3 can be used to fasten the cylindrical secondary scale 2 to the columnar main scale 1 to prevent the cylindrical secondary scale 2 from moving and facilitate reading.

[0034] The above-mentioned columnar main scale 1, cylindrical auxiliary scale 2 and positioning piece form a columnar sleeve vernier caliper, which can achieve high-precision measurement of precision instruments, with an accuracy reaching the accuracy of a vernier caliper, and can directly measure vertical height.

[0035] Preferably, the base structure 6 is a columnar body made of a permanent magnetic material. Thus, when the cylindrical sleeve vernier caliper is used alone, the base structure 6 at the bottom can be attached to a measurement control point mark or other steel measurement mark to facilitate height measurement.

[0036] Furthermore, the top structure 4 and base structure 6 of the cylindrical main ruler 1 are both cylindrical. This allows them to be inserted into the central circular hole of the base when measuring the height of a GNSS antenna, instrument, or prism, directly reaching the fixed height position at the upper end of the base angle screw, allowing for convenient and high-precision vertical height measurements.

[0037] In an embodiment of the present invention, the height measuring ruler further comprises:

[0038] A ruler column 8 is fixed at the bottom, and its top end is connected to the base structure 6 .

[0039] Specifically, the material of the bottom end of the bottom fixed ruler column 8 (ie, the bottom end 9 of the bottom column) is a permanent magnetic material.

[0040] In the present invention, the bottom end 9 of the bottom column is made of wear-resistant permanent magnetic material and can be adsorbed on the measurement control point mark or other steel measurement mark, which is convenient for height measurement.

[0041] In actual use, the top of the bottom fixed ruler column 8 is detachably connected to the base structure 6 at the bottom of the cylindrical main ruler 1. The present invention does not limit the specific connection method between the two. For example, the top of the bottom fixed ruler column 8 is provided with a screw hole 11, and the side wall of the base structure 6 is provided with external threads; the external threads of the base structure 6 mate with the screw hole 11 of the bottom fixed ruler column 8.

[0042] Furthermore, the height measuring ruler also includes:

[0043] The middle fixed ruler column 10 is arranged between the bottom fixed ruler column 8 and the columnar main ruler 1. Its bottom end is connected to the top end of the bottom fixed ruler column 8, and its top end is connected to the base structure 6 of the columnar main ruler 1. The middle fixed ruler column 10 and the bottom fixed ruler column 8 have the same height.

[0044] In practical applications, there may be multiple middle fixed ruler posts 10, and the multiple middle fixed ruler posts 10 are sequentially connected end to end to form a long strip.

[0045] The embodiment of the present invention does not limit the number of the central fixed ruler columns 10 , and the number of the central fixed ruler columns 10 can be adjusted according to the specific height of the instrument being measured.

[0046] The embodiment of the present invention does not limit the specific connection method between the middle fixed scale column 10 and the bottom fixed scale column 8 and the columnar main scale 1. For example, the middle fixed scale column 10 is threadedly connected to the bottom fixed scale column 8 and the columnar main scale 1. Specifically, a screw hole 11 is provided at the top of each middle fixed scale column 10, and a screw 12 is provided at the bottom. The top screw hole 11 of the lower middle fixed scale column 10 is connected to the bottom screw 12 of the upper middle fixed scale column 10, the top screw hole 11 of the uppermost middle fixed scale column 10 is threadedly connected to the base structure 6 of the columnar main scale 1, and the bottom screw 12 of the lowermost middle fixed scale column 10 is matched with the top screw hole 11 of the bottom fixed scale column 8.

[0047] The utility model provides a precision height gauge for surveying and mapping. It consists of multiple fixed-height gauge columns (i.e., a central fixed gauge column 10 and a bottom fixed gauge column 8) and a cylindrical sleeve vernier caliper. The multiple-section gauge columns and the cylindrical sleeve vernier caliper are threadedly connected. This gauge enables high-precision height measurements of precision instruments. The number of connected central fixed gauge columns 10, and thus the measuring height of the gauge, can be adjusted according to the height of the instrument being measured. This makes the gauge adaptable to a variety of devices, expanding its applicability. Furthermore, this gauge can be mass-produced at low cost and has a long service life.

[0048] The above descriptions are merely a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, they are not intended to limit the present application. Any technical personnel familiar with the present profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A precision height measuring ruler for surveying and mapping, characterized in that: The height measuring stick comprises: A columnar main ruler, with a first scale provided on its column body, a base structure provided on its top, and a base structure provided on its bottom; A cylindrical secondary ruler is slidably mounted on the cylindrical main ruler, and a second scale is provided on the cylindrical body of the secondary ruler. The accuracy of the second scale is higher than that of the first scale. The top end of the top structure and the bottom end of the base structure serve as the measurement base points of the cylindrical secondary ruler. The positioning member is used to position the cylindrical secondary ruler when the cylindrical secondary ruler slides to the measuring position.

2. The height measuring stick according to claim 1, characterized in that: The base structure is a columnar body; the material of the columnar body is a permanent magnetic material.

3. The height measuring stick according to claim 1, characterized in that: The height measuring stick also includes: The ruler column is fixed at the bottom, and the top end of the ruler column is connected to the base structure.

4. The height measuring stick according to claim 3, characterized in that: The bottom end of the bottom fixed ruler column is made of permanent magnetic material.

5. The height measuring stick according to claim 3, characterized in that: A screw hole is provided at the top end of the bottom fixed ruler column, and an external thread is provided on the side wall of the base structure; the external thread of the base structure is matched and connected with the screw hole of the bottom fixed ruler column.

6. The height measuring stick according to claim 3, characterized in that: The height measuring stick also includes: The middle fixed ruler column is arranged between the bottom fixed ruler column and the columnar main ruler, with its bottom end connected to the top end of the bottom fixed ruler column, and its top end connected to the base structure of the columnar main ruler; the middle fixed ruler column and the bottom fixed ruler column have the same height.

7. The height measuring stick according to claim 6, characterized in that: There are multiple fixed ruler posts in the middle, and the multiple fixed ruler posts are connected end to end in sequence to form a long strip.

8. The height measuring stick according to claim 6, characterized in that: The middle fixed ruler column, the bottom fixed ruler column and the columnar main ruler are all threadedly connected.

9. The height measuring stick according to claim 1, characterized in that: The positioning member is a fastening bolt.

10. The height measuring stick according to claim 1, characterized in that: The top structure and the base structure of the columnar main ruler are both cylindrical.

Images