CN-122015912-A - Angle verification platform

CN122015912ACN 122015912 ACN122015912 ACN 122015912ACN-122015912-A

Abstract

The invention relates to the technical field of precision measurement and angle verification, and discloses an angle verification platform which comprises a main body and two end plates, wherein the upper surface of the main body is a plane for placing an instrument to be verified, the two end plates are oppositely arranged on two lateral sides of the main body in parallel and are detachably connected with the main body, each end plate is provided with scales for marking the end position of the main body, when the lateral two ends of the main body are at the same height, the upper surface of the main body is in a horizontal state, namely, the inclination angle is zero, when the lateral two ends of the main body are respectively at different heights, the upper surface of the main body is in an inclination state, at the moment, the difference delta H of marking values of the two ends of the main body on scales of the end plates is respectively read, and under the condition that the length L of the main body and the thickness D of the end plates are known, the inclination angle theta of the upper surface of the main body can be obtained through calculation of a trigonometric function, for example, tan theta= deltaH/(L+D). The invention has the advantages of simple structure, convenient operation and capability of generating stable and accurate known angle values.

Inventors

XU JUN
LI HONGKAI
Chi Changjun
DAI WEI
WANG WUXIONG
Ren Luoxiang
LI ZHENGJIE
LI PAN

Assignees

中国人民解放军91515部队

Dates

Publication Date: 20260512
Application Date: 20260209

Claims (10)

1. An angle verification platform, comprising: The upper surface of the main body is a plane for placing an instrument to be verified; The device comprises a main body, end plates, a plurality of scales, a plurality of display units and a plurality of display units, wherein the two end plates are oppositely arranged on two lateral sides of the main body in parallel and detachably connected with the main body; When the two transverse ends of the main body are at the same height, the upper surface of the main body is in a horizontal state, namely the inclination angle is zero; When the two lateral ends of the main body are respectively located at different heights, the upper surface of the main body is in an inclined state, at the moment, the difference delta H between the identification values of the two ends of the main body on the scales of the end plates is respectively read, and under the condition that the length L of the main body and the thickness D of the end plates are known, the inclination angle theta of the upper surface of the main body can be obtained through calculation through a trigonometric function, namely tan theta= delta H/(L+D).
2. The angle calibration platform of claim 1, wherein grooves are formed in the middle of two lateral sides of the main body, the grooves penetrate through the main body in the thickness direction of the main body, a plurality of tooth-shaped portions are uniformly distributed in the grooves in the thickness direction of the main body, an elongated tooth-shaped plate is fixedly arranged in the middle of one face of the end plate, which faces the main body, and extends in the height direction of the end plate, and a plurality of engaging teeth are uniformly distributed in the height direction of the tooth-shaped plate, which faces the main body, and are engaged with the tooth-shaped portions in an adaptive manner.
3. The angle verification platform of claim 1, wherein the upper surface of the body is provided with grid lines, the grid lines being downwardly recessed and arranged in a crisscross arrangement.
4. The angle verification platform of claim 2, wherein the toothed plate is fixedly mounted to the end plate by a first bolt.
5. The angle verification platform of claim 4, wherein an embedded groove adapted to the toothed plate is formed in the middle of the end plate, and the toothed plate is embedded in the embedded groove and connected through the first bolt.
6. The angle verification platform of claim 2, wherein the body and the end plate are detachably connected by a second bolt.
7. The angle verification platform of claim 6, wherein the body has threaded holes on both sides of the groove, the end plate has elongated holes on both sides of the toothed plate parallel to the toothed plate, and bolts pass through the elongated holes to be screwed with the threaded holes.
8. The angle verification platform of claim 7, wherein a spacer is provided between the bolt and the end plate.
9. An angle verification platform according to any one of claims 1 to 8, wherein the lower ends of both end plates are provided with cylindrical support posts extending along the lower rim of the end plate where each is located, the support posts being such that the contact surface of the end plate with the horizontal support surface is an arc surface.
10. The angle verification platform of claim 9, wherein the lower end of the end plate is provided with a semicircular groove adapted to the support column, a portion of the support column is inserted into the semicircular groove, and the bottom of the support column is exposed out of the end plate.

Description

Angle verification platform Technical Field The invention relates to the technical field of precision measurement and angle verification, in particular to an angle verification platform. Background The angle calibration platform is a device for calibrating angles of equipment such as a level gauge and an inclinometer, and the specific structure generally comprises a level platform, wherein the level platform is placed in an inclined state with a known inclination angle, and then the level gauge or the inclinometer to be calibrated is placed on the level platform. From the traceability or metering perspective, the verification and calibration of the level and inclinometer are commonly performed by using a small angle inspection instrument or dividing head, respectively. The method has high automation degree, but the product cost is high, the generated angle value depends on the precision and repeatability of the measuring device, and the method is usually fixedly installed and used in a laboratory environment. For many application scenarios, only a set of fixed and reliable angle values is needed to be obtained for verification, and the cost performance of using high-cost precision equipment is not high. In addition, when the accuracy of the angle measuring instrument is suspected in field use, there is also a lack of a simple, stable, quick to use verification tool. Therefore, an angle verification platform based on a material measurement standard principle, good in stability and repeatability and low in cost is urgently needed in the market so as to meet the requirements of convenient and efficient verification. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide the angle checking platform which has a simple structure, is convenient to operate and can generate a stable and accurate known angle value. In order to achieve the above purpose, the present invention adopts the following technical scheme: The angle calibration platform comprises a main body and two end plates, wherein the upper surface of the main body is a plane for placing an instrument to be calibrated, the two end plates are arranged on two lateral sides of the main body relatively in parallel and are detachably connected with the main body, and each end plate is provided with a scale for marking the end position of the main body; When the two transverse ends of the main body are at the same height, the upper surface of the main body is in a horizontal state, namely the inclination angle is zero; When the two lateral ends of the main body are respectively located at different heights, the upper surface of the main body is in an inclined state, at the moment, the difference delta H between the identification values of the two ends of the main body on the scales of the end plates is respectively read, and when the length L of the main body and the thickness D of the end plates are known, the inclination angle theta of the upper surface of the main body can be obtained through calculation through a trigonometric function, for example, tan theta= delta H/(L+D). Optionally, a groove is formed in the middle of two lateral sides of the main body, the groove penetrates through the main body along the thickness direction of the main body, a plurality of tooth-shaped portions are uniformly distributed in the groove along the thickness direction of the main body, a long-strip-shaped tooth-shaped plate is fixedly arranged in the middle of one surface of the end plate facing the main body, the tooth-shaped plate extends along the height direction of the end plate, a plurality of engaging teeth are uniformly distributed on one surface of the tooth-shaped plate facing the main body along the height direction of the tooth-shaped plate, and the engaging teeth are engaged with the tooth-shaped portions in an adapting mode. Optionally, the upper surface of main part is equipped with the gridlines, and the gridlines undercut to take the crisscross arrangement. Optionally, the toothed plate is fixedly mounted on the end plate by a first bolt. Optionally, an embedded groove matched with the toothed plate is formed in the middle of the end plate, and the toothed plate is embedded in the embedded groove and connected through the first bolt. Optionally, the main body and the end plate are detachably connected through a second bolt. Optionally, the main body is provided with threaded holes at two sides of the groove, the end plates are provided with elongated holes parallel to the toothed plate at two sides of the toothed plate, and bolts penetrate through the elongated holes to be in threaded connection with the threaded holes. Optionally, a spacer is provided between the bolt and the end plate. Optionally, the lower ends of the two end plates are respectively provided with a cylindrical support column, the support columns extend along the lower edge of the end plate where each support column is located, and the support co