CN216770526U

CN216770526U - Multipurpose indoor baseline standard device

Info

Publication number: CN216770526U
Application number: CN202122534926.7U
Authority: CN
Inventors: 谢开强; 蒋丽; 薛靓; 汤江文; 彭元辉; 杨毓军; 杨桩
Original assignee: National Institute Of Measurement And Testing Technology Machinery Research Institute
Current assignee: National Institute Of Measurement And Testing Technology Machinery Research Institute
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-06-17
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a multipurpose indoor baseline standard device, which relates to the field of instrument verification, integrates various verification systems and has the technical scheme key points that: the multi-purpose indoor baseline standard device comprises a verification platform, a fixed platform and a target, wherein the verification platform comprises a first verification platform, a second verification platform and a third verification platform; the fixed table comprises a first fixed table, a second fixed table, a third fixed table, a fourth fixed table and a fifth fixed table; the calibration platform is used for mounting an instrument to be detected or a target, and the target is mounted on the fixed platform; the targets correspond to the fixed stations one by one; the fixed platforms are distributed on the same arc; the third fixed station is positioned in the middle of the arc; the calibration platform and the third fixed platform are positioned on the same axis; the third verification platform is positioned at the center of the circular arc. The functions of horizontal angle verification and radial distance verification are realized.

Description

Multipurpose indoor baseline standard device

Technical Field

The utility model relates to the field of instrument verification, in particular to a multipurpose indoor baseline standard device.

Background

In the field of distance, angle, etc., measuring instruments are used. The accuracy of the instrument is reduced due to wear and aging during use. It is therefore necessary to periodically test the instrument. Common tests include horizontal angle test and radial distance test. The horizontal angle verification means verifying the accuracy of angle determination in the horizontal direction of an instrument; the radial distance verification is the verification of the radial distance measurement error of the instrument. In the prior verification process, two sets of systems are needed to verify the equipment respectively, and no technician fuses the two verification systems.

SUMMERY OF THE UTILITY MODEL

None of the prior art has the technician combine a horizontal angle certification system with a radial distance certification system. On the one hand, the theodolite calibration device has no dynamic redesign calibration system under the condition that the theodolite calibration device is available; on the other hand, the effect of accurately calibrating the small-angle instrument after the system is combined is not recognized. Therefore, the utility model provides a multi-purpose indoor baseline standard device, which realizes multiple verification functions.

The technical purpose of the utility model is realized by the following technical scheme: the multi-purpose indoor baseline standard device comprises a verification platform, a fixed platform and a target, wherein the verification platform comprises a first verification platform, a second verification platform and a third verification platform; the fixed table comprises a first fixed table, a second fixed table, a third fixed table, a fourth fixed table and a fifth fixed table; the calibration platform is used for mounting an instrument to be detected or a target, and the target is mounted on the fixed platform; the targets correspond to the fixed stations one by one; the fixed platforms are distributed on the same arc; the third fixed station is positioned in the middle of the arc; the calibration platform and the third fixed platform are positioned on the same axis; the third verification platform is positioned at the center of the circular arc.

The distance between the verification table and the fixing table is fixed, and after the target is arranged on the verification table or the fixing table, the distance between the centers of the targets is also fixed. The reference value can be obtained by measuring the distance between the targets and the angle between the verification table and the fixed table through a high-precision instrument. Used for calculating the error value of the instrument to be detected. When the first verification platform is used for placing the instrument to be detected, and the second verification platform and the third verification platform are used for placing the targets, the target can be used as a radial distance verification system; when the first verification platform is matched with the fixed platform, the first verification platform can be used as a small-angle horizontal angle verification system; when the third verification platform is used for placing the instrument to be detected to be matched with the fixed platform, the system can be used as a large-angle horizontal angle verification system. The second verification platform is used for placing the instrument to be detected to be matched with the fixed platform, and can be used as a general horizontal angle verification system.

Furthermore, an included angle between a first connecting line between the first fixing table and the third verification table and a fifth connecting line between the fifth fixing table and the third verification table is 175-185 degrees; an included angle between a connecting line IV between the fourth fixing table and the third verification table and a connecting line III between the third fixing table and the third verification table is 35-50 degrees; and an included angle between a second connecting line between the second fixing table and the third verification table and a third connecting line between the third fixing table and the third verification table is 35-50 degrees.

Further, a linear guide rail is arranged between the first verification platform and the second verification platform, a moving platform is arranged on the linear guide rail, and a target is arranged on the moving platform.

The instrument to be detected is fixed on the first verification table or the second verification table, and the platform is moved continuously, so that the linear displacement parameter verification can be realized.

Further, the linear guide rail is an I-shaped guide rail, and a sliding block matched with the guide rail is arranged on the moving platform.

Furthermore, a scale strip is arranged on the guide rail, and a pointer is arranged on the moving platform.

Furthermore, a forced centering disc is arranged on the movable trolley, and the disc surface of the forced centering disc is in a horizontal state; and a target is arranged on the forced centering plate.

Furthermore, the verification platform and the fixing platform respectively comprise a forced centering disc and a fixing seat, the fixing seat is made of cement or concrete, and the forced centering disc is embedded into the fixing seat.

Further, the target includes a base and a prism; the prism has a plurality of line segments on the mirror surface, and the line segments intersect at a point.

Further, the base comprises a base, a connecting seat and a mounting seat; a centering hole is formed below the base, a thread adjusting column is installed at the upper end of the base, and a connecting seat is arranged at the upper end of the thread adjusting column; the connecting seat is provided with a mounting groove, and the mounting seat is fixed in the mounting groove; a telescopic supporting rod is arranged on the mounting seat; the support rod is provided with a support, and the prism is arranged on the support.

Furthermore, the mounting seat is connected with the connecting seat through a rotating shaft, a limiting bolt is arranged on the connecting seat, and the limiting bolt is matched with the rotating shaft, so that the connecting seat and the mounting seat can be fixed.

In summary, the utility model has at least one of the following advantages:

firstly, through the above arrangement, the horizontal angle calibration system and the radial distance calibration system are combined, the system space is saved, the operation steps of calibration are simplified, and the calibration requirements of various instruments can be met.

And secondly, because the distance between the verification tables is long, the precision is higher when a high-precision instrument is used for measuring the included angle, and a more accurate reference value can be obtained. By the same token, a more accurate measured value of the instrument to be detected can be obtained. And finally, a more accurate instrument error value can be obtained.

Setting a track and a mobile platform, and also carrying out linear displacement parameter verification.

Drawings

FIG. 1 is a perspective view of the embodiment

FIG. 2 is a plan view of the embodiment

FIG. 3 is a schematic illustration of a target

FIG. 4 is a schematic view of the mobile cart

In the figure: 11. a first verification platform; 12. a second verification platform; 13. a third verification platform; 21. a first fixed table; 22. a second stationary stage; 23. a third stationary stage; 24. a fourth stationary stage; 25. a fifth fixed table; 3. a target; 30. a prism; 31. a base; 32. a connecting seat; 33. a mounting seat; 34. a support bar; 35. a support; 36. a warship brand; 4. a guide rail; 41. moving the trolley; 42. a slider; 43. a pointer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly or indirectly connected to the other element, and the "connection" does not limit the fixed connection or the movable connection, and the specific connection mode should be determined according to the specific technical problem to be solved.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example (b):

a multi-purpose indoor baseline standard apparatus comprising a certification stand, a fixed stand and targets 3. The verification platform comprises a first verification platform 11, a second verification platform 12 and a third verification platform 13; the fixed table includes a first fixed table 21, a second fixed table 22, a third fixed table 23, a fourth fixed table 24, and a fifth fixed table 25; the calibration platform is used for mounting an instrument to be detected or a target 3, and the target 3 is mounted on the fixed platform; the targets 3 correspond to the fixed stations one by one; the fixed platforms are distributed on the same arc; the third stationary table 23 is located in the middle of the arc; the verification platform and the third fixing platform 23 are positioned on the same axis; the third verification platform 13 is positioned at the center of the circular arc.

An included angle between a first connecting line between the first fixing table 21 and the third verification table 13 and a fifth connecting line between the fifth fixing table 25 and the third verification table 13 is 175-185 degrees, and the included angle is preferably 180 degrees in the embodiment; an included angle between a fourth connecting line between the fourth fixing table 24 and the third verification table 13 and a third connecting line between the third fixing table 23 and the third verification table 13 is 35-50 degrees, and preferably 45 degrees in the embodiment; an included angle between a second connecting line between the second fixing table 22 and the third verification table 13 and a third connecting line between the third fixing table 23 and the third verification table 13 is 35-50 degrees, and preferably 45 degrees in the embodiment. The above-described angle is an ideal angle, and cannot reach an inexhaustible angle due to the influence of the mounting accuracy. The above angles merely specify their general orientation. By the arrangement mode, when the instrument is arranged on the third verification platform 13, the verification amplitude of the maximum horizontal angle can reach +/-90 degrees; meanwhile, the second verification station 12 and the fourth verification station are used as intermediate values, and the accuracy of the verification can be verified through multiple data.

The verification platform and the fixing platform respectively comprise a forced centering disc and a fixing seat, the fixing seat is made of cement or concrete, and the forced centering disc is embedded into the fixing seat. The center of the forced centering disc is provided with a centering hole, so that an instrument arranged on the forced centering disc can be ensured, and the central axis of the instrument is vertical to the disc surface. The forced centering disc is embedded into the cement fixing seat and integrally formed with the cement or concrete fixing seat. This arrangement may increase the stability of the forced centering disc. Is not easy to move under the action of external force.

A linear guide rail 4 is arranged between the first verification platform 11 and the second verification platform 12, and the axis of the linear guide rail 4 is superposed with the connecting line of the first verification platform 11 and the second verification platform 12. For convenient measurement, linear guide 4 sets up on 4 platforms of guide rail, with the platform on 4 and the guide rail of linear guide 4 improve with wait to examine instrument height, make things convenient for survey crew to measure. And a moving platform is arranged on the linear guide rail 4, and a target 3 is arranged on the moving platform. The linear guide rail 4 is an I-shaped guide rail 4, and a sliding block 42 matched with the guide rail 4 is arranged on the moving platform. In other embodiments, the moving platform is arranged on the guide rail 4 in a manner similar to the matching of train wheels and train tracks; namely, wheels are arranged below the mobile platform and are matched with the guide rail 4, so that the mobile platform is limited on the guide rail 4 and can only move along the direction of the guide rail 4. The guide rail 4 is provided with a scale bar, and the moving platform is provided with a pointer 43. A forced centering disc is arranged on the movable trolley 41, and the disc surface of the forced centering disc is in a horizontal state; the forced centering plate is provided with a target 3. The scale bar on the guide rail 4 has high accuracy, and the pointer 43 points to the scale bar. Changes in target 3 on the mobile platform can be obtained by reading changes in the scale bar by pointer 43. The changed value may be used as a reference value for the radial continuous ranging. In another embodiment, the reference value is obtained by arranging a high-precision laser interferometer in front of the track and obtaining the variation value as the reference value through the high-precision laser interferometer. Of course, other embodiments determine the displacement of the movable platform on the guide rail through one or more of four displacement measuring modes, namely a grating line displacement measuring system, a continuous length measuring system such as an interferometer, a displacement reading system and an interferometer target mirror.

In the present embodiment, a prism 30 with a base is used as the target 3, and a plurality of line segments are arranged on the lens of the prism 30, and the line segments intersect at a point, and the point is used as a detection indication point. The indicating point positions on the fixed seat are positioned on the same horizontal plane. The base comprises a base 31, a connecting seat 32 and a mounting seat 33; the base 31 below is provided with the centering hole, the centering hole can with force the mounting hole on the centering dish, through bolted connection, can guarantee the base and install the stability of prism 30 on the base. The detection indication point on the prism 30 and the centering hole on the base 31 are positioned on the same axis; so set up can be effectual the axis of guaranteeing to mark 3 perpendicular with the horizontal plane, be favorable to measuring the interval between the mark 3 and keep the stability of this interval. The upper end of the base 31 is provided with a thread adjusting column, and the upper end of the thread adjusting column is provided with a connecting seat 32; the base can be kept in a horizontal state by adjusting the threaded adjusting column. The connecting seat 32 is provided with a mounting groove, and the mounting seat 33 is arranged in the mounting groove; a level indicator is also provided on the mounting seat 33 for indicating the status of the device when the threaded adjustment post is in use. In the embodiment, a connecting shaft is arranged to connect the mounting seat 33 and the connecting seat 32, and the connecting seat 32 and the mounting seat 33 can rotate to adjust the angle of the prism 30; the screw rod is arranged on the mounting seat 33 or the connecting seat 32, the screw rod is horizontally inserted, and can contact the shaft in a screwing state, so that the effect of fixing the positions of the mounting seat 33 and the connecting seat 32 can be achieved. The mounting seat 33 is provided with a telescopic supporting rod 34; the support 35 is arranged on the support bar 34, the rotating shaft is arranged on the support 35, the prism 30 is arranged on the support 35 through the rotating shaft, and the pitching angle of the prism 30 can be adjusted through the rotating shaft. The support 35 is also provided with a warship board 36, and the warship board 36 is provided with an indicating marking line for preliminarily indicating the position when being aligned with the target 3.

To facilitate understanding of the present solution, the working principle will now be explained as follows. The distance between the verification stations of the system, and the distance and the angle between the verification station and the fixed station are measured by a high-precision instrument and are used as reference values in verification. When the first verification platform 11 is used for placing the instrument to be detected, the second verification platform 12 and the third verification platform 13 are used for placing the target 3 and can be used as a radial distance verification system; when the first verification platform 11 is matched with the fixed platform, the system can be used as a small-angle horizontal angle verification system; when the third verification platform 13 is used for placing the instrument to be detected to be matched with the fixed platform, the system can be used as a large-angle horizontal angle verification system. The second calibration platform 12 is used for placing the instrument to be tested to be matched with the fixed platform and can be used as a general horizontal angle calibration system.

In another embodiment, the target 3 on the fixed table is a collimator, and the pipelines of the collimator are converged to one point before use. The point is located on the verification table and is forced to be on the central axis of the centering disc. The light rays of the collimator on the fixed table are also positioned on the same plane. The included angle between each optical fiber is measured by a high-precision instrument and used as a reference value. When the instrument to be detected is detected, the axis of the ocular lens of the instrument is aligned with the light pipes on the third fixing table 23, and then the included angles between the light pipes are measured in sequence to obtain a measured value. Three certification benches can correspond to different amplitudes of horizontal angular measurements.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A multipurpose indoor baseline standard device is characterized in that: the device comprises a verification platform, a fixed platform and a target (3), wherein the verification platform comprises a first verification platform (11), a second verification platform (12) and a third verification platform (13); the fixed table comprises a first fixed table (21), a second fixed table (22), a third fixed table (23), a fourth fixed table (24) and a fifth fixed table (25); the calibration platform is used for mounting an instrument to be detected or a target (3), and the target (3) is mounted on the fixed platform; the targets (3) correspond to the fixed stations one by one; the fixed platforms are distributed on the same circular arc; the third fixed table (23) is positioned in the middle of the arc; the verification table and the third fixing table (23) are positioned on the same axis; the third verification platform (13) is positioned at the circle center of the circular arc;

a linear guide rail (4) is arranged between the first verification platform (11) and the second verification platform (12), a moving platform is arranged on the linear guide rail (4), and a target (3) is arranged on the moving platform.

2. The multi-purpose indoor baseline standard apparatus of claim 1, wherein: an included angle between a first connecting line between the first fixing table (21) and the third verification table (13) and a fifth connecting line between the fifth fixing table (25) and the third verification table (13) is 175-185 degrees; an included angle between a connecting line IV between the fourth fixing table (24) and the third verification table (13) and a connecting line III between the third fixing table (23) and the third verification table (13) is 35-50 degrees; an included angle between a second connecting line between the second fixing table (22) and the third verification table (13) and a third connecting line between the third fixing table (23) and the third verification table (13) is 35-50 degrees.

3. The multi-purpose indoor baseline standard apparatus of claim 1, wherein: the linear guide rail (4) is an I-shaped guide rail (4), and a sliding block (42) matched with the guide rail (4) is arranged on the moving platform.

4. The multi-purpose indoor baseline standard apparatus of claim 1, wherein: the guide rail (4) is provided with a scale bar, and the moving platform is provided with a pointer (43).

5. The multi-purpose indoor baseline standard apparatus of claim 1, wherein: a forced centering disc is arranged on the movable trolley (41), and the disc surface of the forced centering disc is in a horizontal state; the forced centering plate is provided with a target (3).

6. The multi-purpose indoor baseline standard apparatus of claim 1, wherein: the verification platform and the fixing platform respectively comprise a forced centering disc and a fixing seat, the fixing seat is made of cement or concrete, and the forced centering disc is embedded into the fixing seat.

7. The multi-purpose indoor baseline standard apparatus of claim 1, wherein: the target (3) comprises a base and a prism (30); the prism (30) has a plurality of line segments on its mirror surface, which intersect at a point.

8. The multi-purpose indoor baseline standard of claim 7, wherein: the base comprises a base (31), a connecting seat (32) and a mounting seat (33); a centering hole is formed below the base (31), a thread adjusting column is installed at the upper end of the base (31), and a connecting seat (32) is arranged at the upper end of the thread adjusting column; the connecting seat (32) is provided with a mounting groove, and the mounting seat (33) is fixed in the mounting groove; a telescopic supporting rod (34) is arranged on the mounting seat (33); the support rod (34) is provided with a support (35), and the prism (30) is arranged on the support (35).

9. The multi-purpose indoor baseline standard of claim 8, wherein: the mounting seat (33) is connected with the connecting seat (32) through a rotating shaft, a limiting bolt is arranged on the connecting seat (32), the limiting bolt is matched with the rotating shaft, and the connecting seat (32) and the mounting seat (33) can be fixed mutually.