CN220418468U - Centering frame for tunnel control point measurement - Google Patents
Centering frame for tunnel control point measurement Download PDFInfo
- Publication number
- CN220418468U CN220418468U CN202320481908.3U CN202320481908U CN220418468U CN 220418468 U CN220418468 U CN 220418468U CN 202320481908 U CN202320481908 U CN 202320481908U CN 220418468 U CN220418468 U CN 220418468U
- Authority
- CN
- China
- Prior art keywords
- pair
- screw
- control point
- middle plates
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a centering frame for tunnel control point measurement. The centering frame for tunnel control point measurement comprises a first centering disc, a second centering disc, a center rod piece, a level gauge and three support rod pieces, wherein the first centering disc is arranged on the center rod piece; the upper end of the central rod piece is connected with the centers of the bottoms of the first pair of middle plates; the center of the top of the second centering disc is provided with a spherical hinge connecting piece, and the lower end of the central rod piece is connected with the spherical hinge connecting piece; the level gauge is sleeved on the central rod piece; the upper ends of the three support rods are respectively connected to the bottoms of the first pair of middle plates, the three support rods extend downwards in an inclined mode towards the outer sides of the peripheries of the first pair of middle plates, and the three support rods are telescopic. The method has the advantages of high centering precision, convenience in installation, good stability and high measuring speed, and can be used for completing the measurement of the precise control network efficiently and accurately.
Description
Technical Field
The utility model relates to the technical field of surveying and mapping engineering, in particular to a centering frame for tunnel control point measurement.
Background
At present, the economic development of China is rapid, the scientific technology is very different, the engineering construction scale is larger and larger, and the requirements for precise control and measurement are higher and higher for some national key engineering, especially for very-long tunnel engineering such as Sichuan-Tibetan railways and the like. At present, a measuring mark used in the mapping industry is generally a cross silk observation mark, and a used point-to-point device is generally a tripod, so that the universality is high, but the matching precision is affected by the environment, the technical level of operators and accidental factors, and the use is unstable.
Disclosure of Invention
Based on the above, the utility model aims to provide a centering frame for tunnel control point measurement, which has the advantages of high centering precision, convenient installation, good stability and high measurement speed, and can be used for completing precise control network measurement efficiently and accurately.
A centering frame for tunnel control point measurement comprises a first centering disc, a second centering disc, a central rod piece, a level gauge and three support rod pieces;
the upper end of the central rod piece is connected with the centers of the bottoms of the first pair of middle plates; the center of the top of the second centering disc is provided with a spherical hinge connecting piece, and the lower end of the central rod piece is connected with the spherical hinge connecting piece; the level gauge is sleeved on the central rod piece; the upper ends of the three support rods are respectively connected to the bottoms of the first pair of middle plates, the three support rods extend downwards in an inclined mode towards the outer sides of the peripheries of the first pair of middle plates, and the three support rods are telescopic.
The novel centering frame for tunnel control point measurement is used, the second centering disc is pre-buried on the control point, the center of the second centering disc is aligned with the control point, and the spherical hinge piece connecting piece, the central rod piece, the level, the first centering disc and the three support rod pieces are installed; the length of the three telescopic supporting rods is adjusted to enable the level to be horizontal, and the total station or the prism assembly frame is arranged on the first pair of middle plates, so that tunnel control points can be measured through the total station or the prism assembly frame.
Further, the upper ends of the three support rods are uniformly distributed and circumferentially arranged at the bottoms of the first pair of middle plates. That is, the upper end of each support bar forms a connection line with the center of the first pair of center plates, respectively, and an included angle between each two connection lines is 120 °.
Further, the three support bars are fixedly connected with the first pair of middle plates.
Further, the three support bars extend downwards obliquely towards the outer sides of the peripheries of the first pair of middle plates, and the included angle between the three support bars and the plane where the bottoms of the first pair of middle plates are located is 15 degrees.
Further, the support rod piece comprises a first telescopic connecting rod, an adjustable telescopic screw piece and a second telescopic connecting rod which are connected from top to bottom; the adjustable telescopic screw comprises an adjustable telescopic screw rod and two locking nuts sleeved on the adjustable telescopic screw rod. The length of the three support rod pieces can be adjusted by respectively adjusting the extension and retraction of the adjustable extension screw pieces on the three support rod pieces, so that the levelness of the level can be adjusted when the device is used, and the leveling of the adjusting device is achieved.
Further, the upper end of the first telescopic connecting rod is connected with the bottom of the first pair of middle plates, a first screw rod sleeve hole is formed in the lower end of the first telescopic connecting rod, and the upper end of the adjustable telescopic screw rod is in threaded fit connection with the first screw rod sleeve hole; the upper end of the second telescopic connecting rod is provided with a second screw rod trepanning, and the lower end of the adjustable telescopic screw rod is in threaded fit connection with the second screw rod trepanning. The lengths of the first screw sleeve hole and the second screw sleeve hole are respectively screwed in through the two ends of the adjustable telescopic screw, so that the lengths of the three supporting rods are adjusted, and after the proper length is determined, the three supporting rods are locked and fixed through two locking nuts.
Further, a first central hole is formed in the middle of the first pair of middle plates, and a screw is arranged in the first central hole; the screw extends upwards to protrude out of the top of the first pair of middle plates; a protective sleeve is inlaid between the screw and the first central hole. The screw extends upwards to protrude in the top of first pair of centre plates, so that can pass through total powerstation or prism group frame screw connection, with total powerstation or prism group frame direct mount on the first pair of centre plates.
Further, the spherical hinge connector comprises a spherical hinge support and a hinge ball; the top of the spherical hinge support is provided with a hinge groove, and the hinge ball is embedded into the hinge groove and is movably connected with the spherical hinge support.
Further, an external thread is arranged at the lower end of the central rod piece, and an internal screw hole matched with the external thread is arranged at the top of the hinge ball; the lower end of the central rod piece is in threaded fit connection with the hinge ball.
Further, a second center hole is formed in the middle of the second pair of middle plates; the bottom of the spherical hinge support is provided with a screw, and the screw at the bottom of the spherical hinge support is in threaded connection with the second center hole of the second centering disc.
Further, the level is sleeved on the central rod piece through an elastic sleeve piece.
Further, the level is a high precision level of 0.15 mm/m.
Further, the level is horizontally arranged, the level is a bubble type level, and two bubble tubes which are relatively vertical on the horizontal plane are arranged on the level.
For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic view of a centering frame for tunnel control point measurement according to the present utility model;
FIG. 2 is a schematic view showing the structural separation of the second pair of center plates and the spherical hinge connection;
FIG. 3 is a schematic view showing the first pair of center plates and the center rod in a disassembled configuration;
FIG. 4 is a schematic view of the support bar shown in a disassembled configuration;
FIG. 5 is a schematic view of the structure of the level and the tightness sleeve;
fig. 6 is a schematic structural view of the first pair of center plates.
Detailed Description
Example 1
Referring to fig. 1, a centering frame for tunnel control point measurement includes a first pair of center plates 1, a second pair of center plates 2, a center rod 3, a level 4, and three support rods 5.
The upper end of the central rod piece 3 is connected with the center of the bottom of the first pair of middle plates 1; a spherical hinge connecting piece 21 is arranged in the center of the top of the second pair of middle plates 2, and the lower end of the central rod piece 3 is connected with the spherical hinge connecting piece 21; the level 4 is sleeved on the central rod piece 3; the upper ends of the three support rods 5 are respectively connected to the bottoms of the first pair of middle plates 1, the three support rods 5 extend downwards in an inclined manner towards the outer sides of the peripheries of the first pair of middle plates, and the three support rods are telescopic.
In this embodiment, the upper end of the central rod 3 is fixedly connected with the center of the bottom of the first pair of middle plates 1, the radius of the first pair of middle plates 1 and the radius of the second pair of middle plates are 7.5cm, the thickness of the central rod is 4mm, and the central rod is round steel with phi 22 and the length of the central rod is 50cm.
Referring to fig. 1, the upper ends of the three support bars 5 are uniformly distributed and circumferentially arranged at the bottom of the first pair of middle plates 1. That is, the upper end of each support bar 5 forms a connection line with the center of the first pair of center plates 1, respectively, and an included angle between each two connection lines is 120 °. The three support bars 5 have an angle of 15 ° with the plane of the bottom of the first pair of central discs 1.
Referring to fig. 1 and 4, the support rod 5 includes a first telescopic connecting rod 51, an adjustable telescopic screw 52, and a second telescopic connecting rod 53 connected from top to bottom; the adjustable telescopic screw 52 comprises an adjustable telescopic screw 521 and two lock nuts 522 sleeved on the adjustable telescopic screw 521. The length of the three support bars 5 can be adjusted by adjusting the extension and retraction of the adjustable telescopic screw members 52 on the three support bars 5 respectively, so that the levelness of the level 4 can be adjusted when the device is used, and the leveling of the adjustment device is achieved.
In this embodiment, referring to fig. 4, an upper end of the first telescopic connecting rod 51 is connected to a bottom of the first pair of middle plates 1, a first screw sleeve hole 511 is provided at a lower end of the first telescopic connecting rod 51, and an upper end of the adjustable telescopic screw 521 is connected to the first screw sleeve hole 511 in a threaded fit; the upper end of the second telescopic connecting rod 53 is provided with a second screw rod sleeve hole 531, and the lower end of the adjustable telescopic screw rod 521 is in threaded fit connection with the second screw rod sleeve hole 531. The lengths of the three support rods 5 are adjusted by screwing the two ends of the adjustable telescopic screw 521 into the first screw sleeve hole 511 and the second screw sleeve hole 531 respectively, and after determining the proper length, the three support rods are locked and fixed by two locking nuts 522.
Referring to fig. 6, a first central hole 11 is provided in the middle of the first pair of middle plates 1, a screw 12 is provided in the first central hole 11, and the screw 12 extends upwards to protrude from the top of the first pair of middle plates 1; a protective sleeve 13 is inlaid between the screw 12 and the first central hole. In this embodiment, the screw 12 is a 1/4-20UNC screw.
Referring to fig. 2, the ball hinge connector 21 includes a ball hinge support 211 and a hinge ball 212; the top of the spherical hinge support 211 is provided with a hinge groove 2111, and the hinge ball 212 is embedded into the hinge groove 2111 and is movably connected with the spherical hinge support 211.
Referring to fig. 3, an external thread 31 is provided at the lower end of the central rod 3, and an internal screw hole 2121 matching with the external thread 31 is provided at the top of the hinge ball 212; the lower end of the central rod 3 is in threaded fit connection with the hinge ball 212.
Referring to fig. 2, a second center hole 22 is formed in the middle of the second middle plate 2; the bottom of the spherical hinge support 211 is provided with a screw 2112, and the screw 2212 at the bottom of the spherical hinge support 211 is in threaded connection with the second central hole 22 of the second centering disc 2.
Referring to fig. 1 and 5, the level 4 is sleeved on the central rod 3 through a tightening sleeve 41. The level 4 is a high precision level of 0.15 mm/m. The level 4 is horizontally arranged, the level 4 is a bubble type level, and two bubble tubes 42 which are relatively vertical on the horizontal plane are arranged on the level 4.
The operation process of the centering frame for tunnel control point measurement in this embodiment is as follows:
(1) Embedding the second centering disc on the control point, so that the center of the second centering disc is aligned with the control point;
(2) The spherical hinge piece connecting piece 21, the central rod piece 3, the level 4, the first pair of middle plates 1 and the three support rod pieces 5 are installed;
(3) The air bubbles of the two leveling bubble tubes on the leveling instrument 4 are centered by adjusting the lengths of the three supporting rod pieces 5, so that the device is leveled;
(4) A total station or prism stack is mounted on the first pair of center plates 1 so that measurement of tunnel control points can be performed through the total station or prism stack.
The above examples represent only a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and the utility model is intended to encompass such modifications and improvements.
Claims (10)
1. A centering frame for tunnel control point measurement, characterized in that: comprises a first pair of middle plates, a second pair of middle plates, a central rod piece, a level gauge and three support rod pieces;
the upper end of the central rod piece is connected with the centers of the bottoms of the first pair of middle plates; the center of the top of the second centering disc is provided with a spherical hinge connecting piece, and the lower end of the central rod piece is connected with the spherical hinge connecting piece; the level gauge is sleeved on the central rod piece; the upper ends of the three support rods are respectively connected to the bottoms of the first pair of middle plates, the three support rods extend downwards in an inclined mode towards the outer sides of the peripheries of the first pair of middle plates, and the three support rods are telescopic.
2. The centering frame for tunnel control point measurement according to claim 1, wherein: the upper end of each support rod piece is connected with the centers of the first pair of middle plates respectively, and the included angle between every two connecting lines is 120 degrees; the included angle between the three support rods and the plane where the bottoms of the first pair of middle plates are located is 15 degrees.
3. The centering frame for tunnel control point measurement according to claim 1, wherein: the support rod piece comprises a first telescopic connecting rod, an adjustable telescopic screw piece and a second telescopic connecting rod which are connected from top to bottom; the adjustable telescopic screw comprises an adjustable telescopic screw rod and two locking nuts sleeved on the adjustable telescopic screw rod.
4. A centering frame for tunnel control point measurements as claimed in claim 3, wherein: the upper end of the first telescopic connecting rod is connected with the bottom of the first pair of middle plates, a first screw rod sleeve hole is formed in the lower end of the first telescopic connecting rod, and the upper end of the adjustable telescopic screw rod is in threaded fit connection with the first screw rod sleeve hole; the upper end of the second telescopic connecting rod is provided with a second screw rod trepanning, and the lower end of the adjustable telescopic screw rod is in threaded fit connection with the second screw rod trepanning.
5. The centering frame for tunnel control point measurement according to claim 1, wherein: a first central hole is formed in the middle of the first pair of middle plates, and a screw is arranged in the first central hole; the screw extends upwards to protrude out of the top of the first pair of middle plates; a protective sleeve is inlaid between the screw and the first central hole.
6. The centering frame for tunnel control point measurement according to claim 1, wherein: the spherical hinge connector comprises a spherical hinge support and a hinge ball; the top of the spherical hinge support is provided with a hinge groove, and the hinge ball is embedded into the hinge groove and is movably connected with the spherical hinge support.
7. The centering frame for tunnel control point measurement according to claim 6, wherein: the lower end of the central rod piece is provided with an external thread, and the top of the hinge ball is provided with an internal screw hole matched with the external thread; the lower end of the central rod piece is in threaded fit connection with the hinge ball.
8. The centering frame for tunnel control point measurement according to claim 7, wherein: a second center hole is formed in the middle of the second pair of middle plates; the bottom of the spherical hinge support is provided with a screw, and the screw at the bottom of the spherical hinge support is in threaded connection with the second center hole of the second centering disc.
9. The centering frame for tunnel control point measurement according to claim 1, wherein: the level is sleeved on the central rod piece through an elastic sleeve piece.
10. The centering frame for tunnel control point measurement according to claim 1, wherein: the level is horizontally arranged, the level is a bubble type level, and two bubble tubes which are relatively vertical on the horizontal plane are arranged on the level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320481908.3U CN220418468U (en) | 2023-03-13 | 2023-03-13 | Centering frame for tunnel control point measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320481908.3U CN220418468U (en) | 2023-03-13 | 2023-03-13 | Centering frame for tunnel control point measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220418468U true CN220418468U (en) | 2024-01-30 |
Family
ID=89646116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320481908.3U Active CN220418468U (en) | 2023-03-13 | 2023-03-13 | Centering frame for tunnel control point measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220418468U (en) |
-
2023
- 2023-03-13 CN CN202320481908.3U patent/CN220418468U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206709845U (en) | A kind of forced centering pedestal of levelling | |
| CN201387310Y (en) | Simple device used for detecting straightness of alloy round bar | |
| CN220418468U (en) | Centering frame for tunnel control point measurement | |
| CN214066050U (en) | Building levelness detection device | |
| CN211550976U (en) | Mounting tool of metering device | |
| CN217439023U (en) | Monitoring device | |
| CN213985063U (en) | Building engineering straightness detection device that hangs down | |
| CN216159888U (en) | Fixing support for roadbed and pavement settlement observation scale | |
| CN214980547U (en) | Clamp for eccentric measurement | |
| CN104713523A (en) | Liquid level-type settlement observation auxiliary apparatus and usage method thereof | |
| CN112729047B (en) | Parallelism adjusting method | |
| CN210374862U (en) | Cylinder center measurement auxiliary assembly | |
| CN103335582B (en) | Large-scale propeller pitch measuring instrument | |
| CN215865237U (en) | Perpendicularity detection device for building engineering quality detection | |
| CN108645376B (en) | Telescopic leveling device and detection method thereof | |
| CN112723164A (en) | Building tower crane verticality detection device | |
| CN111322998A (en) | Prism device for linear measurement of arch rib of steel pipe arch bridge | |
| CN113340181B (en) | Method for searching extension line of shaft center line | |
| CN215865042U (en) | Detachable real-time bidirectional measurement machinery hangs down straightness's simple and easy instrument | |
| CN214843157U (en) | Subway tunnel vault settlement monitoring equipment | |
| CN220959899U (en) | Adjustable bridge pad stone preformed hole precision measuring tool | |
| CN114413704B (en) | Three-point inside micrometer calibration device and calibration method | |
| CN215524597U (en) | Special gradient measuring device of building engineering | |
| CN214843195U (en) | Level measurement device for building management | |
| CN216308870U (en) | Verticality measuring device for hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |