CN220187715U - Multifunctional forced centering mark component in long and large tunnel hole - Google Patents
Multifunctional forced centering mark component in long and large tunnel hole Download PDFInfo
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- CN220187715U CN220187715U CN202321524851.7U CN202321524851U CN220187715U CN 220187715 U CN220187715 U CN 220187715U CN 202321524851 U CN202321524851 U CN 202321524851U CN 220187715 U CN220187715 U CN 220187715U
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- 238000005259 measurement Methods 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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Abstract
The utility model discloses a multifunctional forced centering mark component in a long and large tunnel hole, which comprises an embedded part, a movable forced observation column and a movable forced observation column, wherein the top of the embedded part is a disc; the movable forced observation column is a hollow cylinder, one side of the movable forced observation column is a threaded rod matched with an internal threaded connection hole of the embedded part, a disc at the top of the embedded part is attached to the movable forced observation column after the threaded rod is screwed, the center of the observation disc at the other side of the movable forced observation column is a second internal threaded connection hole matched with a centering screw, and the movable forced observation column is connected with the precise base or the total station through the centering screw. The utility model has low installation requirement, simple use and operation, and each measurement of the measuring point can be accurately repeated; and the processing and manufacturing are simple, and the cost is low.
Description
Technical Field
The utility model belongs to measuring equipment, and particularly relates to a multifunctional forced centering mark component in a long tunnel.
Background
In the existing plane control measurement in a long and large tunnel, the measurement of a cross wire network and the measurement of a free station corner intersection network are mainly adopted, each wire side of the cross wire network has a round trip observation value, a closed loop can be formed, and the checking condition is increased; the free station corner intersection net has the advantages of more redundant observation numbers, flexible station position, stronger net shape strength and small influence of side refraction. In order to further improve the transverse penetration precision of the long and large tunnel, the advantages of the two net shapes are combined, and the mixed net measurement of the free station-measuring corner intersection net and the cross wire net can be performed in the plane control measurement in the tunnel. In combination with the actual situation in a long and large tunnel, the control points of the hybrid network are distributed on the top surfaces of the side walls of the cable grooves on two sides in the tunnel, a prism and a total station are required to be arranged at the measuring points, and then free station-measuring corner intersection network measurement and cross wire network measurement are carried out. But this presents a problem: if a conventional method is adopted, a foot rest is erected at a measuring point to arrange a prism and a total station, a centering error inevitably exists, and the co-point of the center of the prism and the center plane of the instrument cannot be ensured, so that the precision of a adjustment result is affected. Therefore, if the mixed network measurement of the free station corner intersection network and the cross wire network is to be performed with high precision, a multifunctional forced centering mark component needs to be developed, so that the forced centering of the observation point can be realized, and the co-point of the center of the total station and the center plane of the prism can be realized.
Disclosure of Invention
In view of the above defects in the prior art, the utility model aims to provide a multifunctional forced centering mark assembly which realizes forced centering of measuring points and co-points of a prism and a central plane of a total station in the mixed network measurement of a free station corner intersection network and a cross wire network.
The utility model relates to a multifunctional forced centering mark component in a long and large tunnel hole, which comprises an embedded part, a movable forced observation column and a movable forced observation column, wherein the top of the embedded part is a disc; the movable forced observation column is a hollow cylinder, one side of the movable forced observation column is a threaded rod matched with an internal threaded connection hole of the embedded part, a disc at the top of the embedded part is attached to the movable forced observation column after the threaded rod is screwed, the center of the observation disc at the other side of the movable forced observation column is a second internal threaded connection hole matched with a centering screw, and the movable forced observation column is connected with the precise base or the total station through the centering screw.
The embedded parts can be multiple.
The precision base is used for installing the prism.
The beneficial technical effects of the utility model are as follows:
the utility model has low installation requirement, simple use and operation, and each measurement of the measuring point can be accurately repeated; and the processing and manufacturing are simple, and the cost is low.
Drawings
FIG. 1 is a cross-sectional view of a multifunctional forced centering mark assembly embedded part in a long tunnel hole of the utility model.
FIG. 2 is a cross-sectional view of a movable forced observation column of a multifunctional forced centering mark assembly in a long tunnel of the utility model.
FIG. 3 is a mounting diagram of a prism use assembly of the present utility model.
Fig. 4 is an installation diagram of the total station use combination of the present utility model.
In the figure: 1-embedded part, 1 a-internal thread connecting hole, 1 b-disc, 2-movable forced observation column, 2 a-threaded rod, 2 b-observation disc, 2 c-second internal thread connecting hole, 3-precise base, 4-prism and 5-total station.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
The utility model relates to a multifunctional forced centering mark component in a long and large tunnel, which comprises an embedded part 1 (shown in figure 1) with a disc 1b at the top, and a movable forced observation column 2 (shown in figure 2) which can be screwed with the embedded part 1. The movable forced observation column 2 is a hollow cylinder, one side of the movable forced observation column is provided with a threaded rod 2a matched with an internal thread connecting hole 1a of the embedded part 1, a disc 1b at the top of the embedded part is attached to the movable forced observation column 2 after the threaded rod 2a is screwed, the center of an observation disc 2b at the other side of the movable forced observation column 2 is provided with a second internal thread connecting hole 2c matched with a centering screw, and the movable forced observation column is connected with the precise base 3 or the total station 5 through the centering screw.
When the embedded part is used, the embedded part 1 is fixedly embedded on the top surface of the side wall of the cable groove at two sides in the tunnel hole. When the prism 4 is required to be arranged at the measuring point, as shown in fig. 3, a threaded rod 2a of the movable forced observation column 2 is connected into the embedded part 1, the bottom of the threaded rod is attached to the disc 1b at the top of the embedded part, the axis L1 of the embedded part 1 is overlapped with the axis L2 of the movable forced observation column 2, then the precise base 3 is fixed with the movable forced observation column 2 through a centering screw, and finally the base and the prism 4 are precisely leveled, and at the moment, the center O1 of the prism 4 is positioned on the plumb line L3 at the center of the observation disc 2 b. When the total station 5 is required to be placed at the measuring point, as shown in fig. 4, the total station 5 is fixed to the mounted movable forced observation column disc by a centering screw, and then the instrument is precisely leveled, and the instrument center O2 is also located on the plumb line L3 of the center of the observation disc 2 b. By the mode, forced centering of the measuring point is realized, and the prism center and the instrument center are ensured to be in the same plane position during measurement.
Because the angle and the position of the embedded part are fixed during each installation, the height of the movable forced observation column, the length of the threaded rod at the bottom and the depth of the screw hole at the center of the observation disc are also determined, and the coaxiality among all the components is kept, the position of the center of the observation disc is not changed during each installation of the movable forced observation column, and the position of the center of the observation disc is fixed at the same point. After the precise leveling device is precisely and flatly arranged on a precise base or a total station with a prism on an observation disc, the prism center and the instrument center are both on the plumb line of the center of the observation disc, so that the co-point between the prism center and the instrument center plane position is realized. Because the measuring points are distributed on the top surface of the side wall of the cable groove, which is about 30-50 cm away from the ground, of the two sides in the hole, the movable forced observation column can heighten the total station to measure the line of sight, the influence of refraction beside the ground is weakened, the disc at the top of the embedded part is tightly attached to the movable forced observation column, and the stability of the total station in the measurement rotation process can be increased.
Claims (3)
1. The multifunctional forced centering mark component in the long and large tunnel is characterized by comprising an embedded part (1) with a disc (1 b) at the top and a movable forced observation column (2) screwed with the embedded part (1); the movable forced observation column (2) is a hollow cylinder, one side of the movable forced observation column is provided with a threaded rod (2 a) matched with an internal thread connecting hole (1 a) of the embedded part (1), a disc (1 b) at the top of the embedded part is attached to the movable forced observation column (2) after the threaded rod (2 a) is screwed, the center of an observation disc (2 b) at the other side of the movable forced observation column (2) is provided with a second internal thread connecting hole (2 c) matched with a centering screw, and the movable forced observation column is connected with the precise base (3) or the total station (5) through the centering screw.
2. The multifunctional forced centering mark assembly in a long tunnel according to claim 1, wherein the embedded parts (1) are a plurality of.
3. A multi-functional forced centering flag assembly within a large tunnel as claimed in claim 1, characterized in that a prism (4) is mounted on the precision base (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321524851.7U CN220187715U (en) | 2023-06-15 | 2023-06-15 | Multifunctional forced centering mark component in long and large tunnel hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321524851.7U CN220187715U (en) | 2023-06-15 | 2023-06-15 | Multifunctional forced centering mark component in long and large tunnel hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220187715U true CN220187715U (en) | 2023-12-15 |
Family
ID=89104662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321524851.7U Active CN220187715U (en) | 2023-06-15 | 2023-06-15 | Multifunctional forced centering mark component in long and large tunnel hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220187715U (en) |
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2023
- 2023-06-15 CN CN202321524851.7U patent/CN220187715U/en active Active
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