CN213779043U - Forced centering mark connecting rod for GNSS static observation - Google Patents
Forced centering mark connecting rod for GNSS static observation Download PDFInfo
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- CN213779043U CN213779043U CN202022672003.3U CN202022672003U CN213779043U CN 213779043 U CN213779043 U CN 213779043U CN 202022672003 U CN202022672003 U CN 202022672003U CN 213779043 U CN213779043 U CN 213779043U
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- connecting rod
- butt joint
- forced centering
- centering mark
- screw
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Abstract
The utility model discloses a force centering mark connecting rod for GNSS static observation usefulness, include: an upper connecting rod; the antenna disc connecting column is integrally and coaxially connected to the upper part of the upper connecting rod; the butt joint groove is formed at the lower end of the upper connecting rod and is positioned in the center of the upper connecting rod; two opposite positions of the side wall of the butt joint groove are respectively provided with a radial screw hole in a through way, and a fastening screw is assembled in each screw hole; a lower connecting rod; the butt joint bulge is integrally and coaxially connected to the upper part of the lower connecting rod and is used for being assembled in the butt joint groove; and the forced centering mark fastening screw is integrated and coaxially connected to the lower part of the lower connecting rod and is used for connecting the forced centering mark. The forced centering mark connecting rod for GNSS static observation reduces observation errors caused by the fact that the bottom and the forced centering mark are fixed and loosened when a GNSS antenna is rotated to north.
Description
Technical Field
The utility model belongs to the technical field of measuring device, concretely relates to a compulsory centering mark connecting rod for GNSS static observation usefulness.
Background
When the GNSS static measurement of geodetic survey is carried out, the connection of the GNSS antenna and the forced centering mark is always a main technical link in field observation. How to quickly connect the two closely and stably, level and strictly indicate north, and the accurate antenna is measured highly, is the key to improve the operating efficiency and the accuracy of the measuring result.
At present, in GNSS observation, facing to a forced observation pillar, field operation personnel need to connect a base on a forced centering mark, level the base, connect a GNSS antenna with a receiver, determine that the GNSS antenna points north according to the north direction of a compass pointer, confirm the strict leveling of the base, waste time and labor in the whole process and cause some observation errors which cannot be quantized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide a compulsory centering mark connecting rod that is used for the static observation of GNSS usefulness, reduced the fixed back of GNSS antenna, the fixed not hard up observation error that causes is marked with the compulsory centering in the bottom that rotatory GNSS antenna finger north caused.
For solving the technical problem, the utility model discloses a technical scheme be, a compulsory centering mark connecting rod that is used for the static observation of GNSS to use, include:
the upper connecting rod is a cylindrical body;
the antenna disc connecting column is a columnar bulge and is integrally and coaxially connected to the upper part of the upper connecting rod, and threads are arranged on the periphery of the outer wall of the antenna disc connecting column;
the butt joint groove is formed at the lower end of the upper connecting rod and is positioned in the center of the upper connecting rod; two opposite positions of the side wall of the butt joint groove are respectively provided with a radial screw hole in a through way, and a fastening screw is assembled in each screw hole;
the lower connecting rod is a cylindrical body;
the butt joint bulge is a columnar bulge, is integrally and coaxially connected to the upper part of the lower connecting rod, has the diameter consistent with the inner diameter of the butt joint groove, and is used for being assembled in the butt joint groove;
the forced centering mark connecting screw is a cylindrical body and is integrally and coaxially connected to the lower part of the lower connecting rod, and threads are arranged on the periphery of the lower part of the forced centering mark connecting screw and are used for connecting the forced centering mark.
Furthermore, the centering device also comprises a nylon friction gasket which is sleeved on the forced centering mark connecting screw and is tightly attached to the lower wall surface of the lower connecting rod.
Furthermore, an annular notch groove is formed in the outer wall of the butt joint protrusion in the circumferential direction, and when the butt joint protrusion is installed in the butt joint groove, the position of the notch groove corresponds to the position of each screw hole.
Furthermore, a through hole is radially perforated at the lower part of the lower connecting rod and is used for being assembled with an assembling and disassembling tool.
The utility model has the advantages of as follows: (1) after the GNSS antenna is fixed, observation errors caused by the fact that the bottom and the forced centering mark are fixed and loosened due to the fact that the GNSS antenna is rotated to north are reduced. (2) The upper connecting rod and the lower connecting rod are strictly coaxial, leveling is not needed when the forced centering mark is installed, the quantity of the used connecting rod is not high, and the technical risk in GNSS static observation is reduced. (3) The installation and the dismantlement are convenient.
Drawings
FIG. 1 is a schematic structural view of an upper connecting rod;
FIG. 2 is a schematic structural view of the lower connecting rod;
fig. 3 is a schematic structural diagram of the connecting rod of the present invention.
Wherein: a. an upper connecting rod; b. a lower connecting rod; 1. an antenna disk connecting column; 2. butting the grooves; 3. fastening screws; 4. butting the bulges; 5. grooving; 6. a through hole, 7, forcibly centering the mark connecting screw; 8. nylon friction pads.
Detailed Description
The utility model relates to a force centering mark connecting rod for GNSS static observation usefulness, as shown in fig. 1, 2 and 3, include: the upper connecting rod a is a columnar body; the antenna disc connecting column 1 is a columnar bulge, the diameter of the columnar bulge is smaller than that of the upper connecting rod a, the columnar bulge and the upper connecting rod a are integrally and coaxially connected to the upper portion of the upper connecting rod a, and threads are arranged on the periphery of the outer wall of the antenna disc connecting column 1 and are made of male and English threads. The butt joint groove 2 is formed in the bottom surface of the lower end of the upper connecting rod a and is positioned in the center of the upper connecting rod a; two opposite positions of the side wall of the butt joint groove 2 are respectively provided with a radial screw hole in a run-through way, and a fastening screw 3 is arranged in each screw hole, namely when the fastening screw 3 is arranged in each screw hole, the front end of each fastening screw 3 is positioned in the notch 5 to play the roles of positioning and fixing.
And the lower connecting rod b is a cylindrical body. The butt joint bulge 4 is a columnar bulge, the diameter of the butt joint bulge is smaller than that of the lower connecting rod b, the butt joint bulge is integrally and coaxially connected to the upper portion of the lower connecting rod b, the diameter of the butt joint bulge is consistent with the inner diameter of the butt joint groove 2, and the butt joint bulge 4 is used for being assembled in the butt joint groove 2. And the two are tightly matched, and the butt joint bulge 4 can freely rotate at any angle in the butt joint groove 2.
And the forced centering mark connecting screw 7 is a cylindrical body and is integrally and coaxially connected to the lower part of the lower connecting rod b, and threads are arranged on the periphery of the lower part of the forced centering mark connecting screw 7 and are used for connecting the forced centering mark.
And the nylon friction gasket 8 is sleeved on the forced centering mark connecting screw 7 and is tightly attached to the lower wall surface of the lower connecting rod b. When the lower connecting rod b is connected with the forced centering mark, the lower connecting rod b is used for increasing friction and stabilizing the connection.
The forced centering mark connecting rod for GNSS static observation is made of 304 stainless steel materials, and is firm and durable. And the height is set at 14cm, so that the requirement that the palm enters the data connecting line of the preamplifier of the antenna disc to be installed after the GNSS antenna is fixed is met. The upper connecting rod a and the lower connecting rod b are strictly coaxial, and strict vertical detection is adopted, so that the leveling process of work is reduced.
On the outer wall of the butt joint bulge 4, an annular notch 5 is formed in the circumferential direction, and when the butt joint bulge 4 is installed in the butt joint groove 2, the notch 5 corresponds to each screw hole.
In order to conveniently detach the lower connecting rod b and the forced centering mark, a through hole 6 is formed in the lower portion of the lower connecting rod b in a radially penetrating mode, the through hole 6 is inserted into a metal rod, and the connecting rod is detached from the forced centering mark.
The use method of the forced centering mark connecting rod for GNSS static observation comprises the following steps:
step one, sleeving a connecting groove 2 of an upper connecting rod a on a connecting convex part 4, and simultaneously screwing two fastening screws 3 to ensure that the front ends of the fastening screws 3 are pushed into a notch 5 and screwed tightly to complete the assembly of the upper connecting rod a and a lower connecting rod b; the forced centering mark connecting screw 7 of the lower connecting rod b is connected with the forced centering disc and is strictly vertical.
And step two, screwing the connection screw 7 of the forced centering mark into the screw hole and screwing.
And step three, screwing the antenna disc connecting column 1 into a connecting screw hole of the GNSS antenna, and screwing.
And step four, loosening the fastening screw 3, rotating the upper connecting rod a to enable the north-seeking mark on the GNSS antenna to strictly seek north, and screwing the fastening screw 3 again. When the upper connecting rod a rotates, the lower connecting rod b is fixed, and the lower connecting rod b and the forced centering mark cannot be loosened or changed in position, so that observation errors are avoided.
And fifthly, connecting one end of an antenna cable with the GNSS antenna, connecting the other end of the antenna cable with the GNSS receiver, and completing the GNSS static measurement preparation work.
Claims (4)
1. A forced centering marker connecting rod for GNSS static observation is characterized by comprising:
an upper connecting rod (a) which is a columnar body;
the antenna disc connecting column (1) is a columnar bulge and is integrally and coaxially connected to the upper part of the upper connecting rod (a), and threads are arranged on the periphery of the outer wall of the antenna disc connecting column (1);
the butt joint groove (2) is formed in the lower end of the upper connecting rod (a) and is positioned in the center of the upper connecting rod (a); two opposite positions of the side wall of the butt joint groove (2) are respectively provided with a radial screw hole in a penetrating way, and a fastening screw (3) is assembled in each screw hole;
a lower connecting rod (b) which is a cylindrical body;
the butt joint bulge (4) is a columnar bulge, is integrally and coaxially connected to the upper part of the lower connecting rod (b), has the diameter consistent with the inner diameter of the butt joint groove (2), and is used for being assembled in the butt joint groove (2);
and the forced centering mark connecting screw (7) is a cylindrical body and is integrally and coaxially connected to the lower part of the lower connecting rod (b), and threads are arranged on the periphery of the lower part of the forced centering mark connecting screw (7) and are used for connecting a forced centering mark.
2. The connecting rod of claim 1, further comprising a nylon friction washer (8) sleeved on the connecting screw (7) and closely attached to the lower wall of the lower connecting rod (b).
3. The connecting rod for the forced centering mark for GNSS static observation according to claim 1, wherein an annular notch (5) is circumferentially formed on the outer wall of the docking protrusion (4), and when the docking protrusion (4) is installed in the docking groove (2), the notch (5) is located corresponding to each screw hole.
4. The connecting rod of claim 2, wherein a through hole (6) is radially opened at the lower part of the lower connecting rod (b) for assembling with a tool for assembling and disassembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022672003.3U CN213779043U (en) | 2020-11-18 | 2020-11-18 | Forced centering mark connecting rod for GNSS static observation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022672003.3U CN213779043U (en) | 2020-11-18 | 2020-11-18 | Forced centering mark connecting rod for GNSS static observation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213779043U true CN213779043U (en) | 2021-07-23 |
Family
ID=76917473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022672003.3U Active CN213779043U (en) | 2020-11-18 | 2020-11-18 | Forced centering mark connecting rod for GNSS static observation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213779043U (en) |
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2020
- 2020-11-18 CN CN202022672003.3U patent/CN213779043U/en active Active
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