CN209894184U - Tunnel shaft construction measuring device - Google Patents
Tunnel shaft construction measuring device Download PDFInfo
- Publication number
- CN209894184U CN209894184U CN201920900975.8U CN201920900975U CN209894184U CN 209894184 U CN209894184 U CN 209894184U CN 201920900975 U CN201920900975 U CN 201920900975U CN 209894184 U CN209894184 U CN 209894184U
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- China
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- centering plate
- support
- measuring device
- shaft construction
- connecting screw
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000005641 tunneling Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 16
- 210000001503 joint Anatomy 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram 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
- 238000005299 abrasion Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a tunnel shaft construction measuring device, include the centering plate and be used for the installation the support to the centering plate, the upper surface to the centering plate is equipped with the instrument connecting screw rod that is used for connecting the appearance that hangs down, the lower surface to the centering plate is equipped with and is used for connecting the leg joint screw rod of support, the instrument connecting screw rod the centering plate with the leg joint screw rod is equipped with the light trap that runs through. The utility model provides a tunnel shaft construction measuring device can realize effectively that the laser point location passes down, and measurement accuracy is high, and simple structure controls the convenience.
Description
Technical Field
The utility model relates to an engineering survey technical field, more specifically say, relate to a tunnel shaft construction measuring device.
Background
The measurement of the tunnel shaft is an extremely important project in the design, construction and operation management stages of the tunnel project.
At present, there are two main measurement methods adopted for a tunnel shaft: one method utilizes a steel wire hanging plumb bob to realize the downward transmission of a ground control point, but the method has complex operation, wastes time and labor, and the measurement precision is difficult to ensure; the other method adopts a forced centering plate for measurement, however, the forced centering plate in the prior art cannot realize downward penetration of a laser point of a vertical alignment instrument, so that the downward transmission of a measurement control point position cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a tunnel shaft construction measuring device can realize passing down the laser point position effectively, and measurement accuracy is high, and simple structure controls the convenience.
The utility model provides a tunnel shaft construction measuring device, include the centering plate and be used for the installation the support to the centering plate, the upper surface to the centering plate is equipped with the instrument connecting screw rod that is used for connecting the appearance that hangs down, the lower surface to the centering plate is equipped with and is used for connecting the leg joint screw rod of support, the instrument connecting screw rod the centering plate with the leg joint screw rod is equipped with the light trap that runs through.
Preferably, the instrument connecting screw is arranged at the center of the upper surface of the centering plate, and the support connecting screw and the instrument connecting screw are coaxially arranged.
Preferably, the length of the support connecting screw is 4-6 times that of the instrument connecting screw.
Preferably, the centering device further comprises a fixing baffle plate which is attached to the lower surface of the centering plate, and the fixing baffle plate is connected with the support through screws.
Preferably, the support frame includes a supporting frame for mounting the fixing baffle, legs respectively supported at two corners of the supporting frame, and a diagonal brace for supporting the supporting frame and the legs.
Preferably, the bolster frame, the legs and the diagonal brace are welded together.
Compared with the prior art, the utility model provides a tunnel shaft construction measuring device, including centering plate and support, be equipped with instrument connecting screw to the upper surface of centering plate, be equipped with support connecting screw to the lower surface of centering plate, run through and be equipped with the light trap in instrument connecting screw, centering plate and support connecting screw. When the construction measurement of the tunnel vertical shaft is carried out, firstly, a support is installed at the corresponding position of a well head of the vertical shaft; secondly, aligning a support connecting screw rod of the centering plate with a threaded hole on the support and screwing the support connecting screw rod, thereby installing the centering plate on the support; then erecting a prism, and accurately measuring the central data of the device by using a total station; thirdly, erecting the vertical alignment instrument on the centering plate, and ensuring that the vertical alignment instrument is attached to the upper surface of the centering plate; and finally, opening the vertical collimator, and enabling laser beams of the vertical collimator to pass through the light holes to realize point location downloading so as to realize measurement of the tunnel shaft. Therefore, the tunnel shaft construction measuring device is simple in structure, convenient to control, capable of effectively achieving laser point location downloading and high in measuring accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a measuring device for tunnel shaft construction provided by the present invention;
FIG. 2 is a front view of the centering plate and retainer plate of FIG. 1 in an installed condition;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a bottom view of FIG. 2;
fig. 5 is a cross-sectional view taken along line a-a of fig. 3.
Wherein, 1-centering plate, 2-bracket and 3-fixed baffle;
11-instrument connecting screw rods, 12-bracket connecting screw rods and 13-light holes; 21-supporting frame, 22-supporting legs and 23-inclined struts.
Detailed Description
The core of the utility model is to provide a tunnel shaft construction measuring device can realize passing down laser point position effectively, and measurement accuracy is high, and simple structure, control the convenience.
It should be noted that the terms "up" and "down" as used herein refer to the up and down directions in fig. 1. All directional terms used herein are based on the common usage of those skilled in the art and the accompanying drawings of the specification, and their presence should not affect the scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a measuring device for tunnel shaft construction according to the present invention; FIG. 2 is a front view of the centering plate and retainer plate of FIG. 1 in an installed condition; FIG. 3 is a top view of FIG. 2; FIG. 4 is a bottom view of FIG. 2; fig. 5 is a cross-sectional view taken along line a-a of fig. 3.
The utility model provides a tunnel shaft construction measuring device, including centering plate 1 with be used for installing support 2 to centering plate 1, instrument connecting screw 11 has set firmly to centering plate 1's upper surface, support connecting screw 12 has set firmly to centering plate 1's lower surface, instrument connecting screw 11 is used for installing the appearance of hanging down, support connecting screw 12 is used for installing support 2, run through in instrument connecting screw 11, be equipped with the light trap 13 that runs through to centering plate 1 and support connecting screw 12, that is to say, centering plate 1 formula structure as an organic whole, the upper surface to centering plate 1 is used for installing the appearance of hanging down, the lower extreme is installed in support 2, so, when carrying out tunnel shaft measurement, the appearance laser beam of hanging down can shine to tunnel shaft through light trap 13 and realize the position and pass down.
Compared with the traditional centering plate 1, the centering plate 1 comprises the centering plate 1 and the support 2, and the instrument connecting screw rod 11 and the support connecting screw rod 12 are respectively arranged on the upper end face and the lower end face of the centering plate 1, so that the installation of a vertical alignment instrument is realized, and the centering plate 1 is installed on the support 2; the light holes 13 are formed in the centering plate 1, so that the point positions of the laser beams are convenient to download, and the arrangement is that the tunnel vertical shaft is measured through the plummet, so that the accuracy is high, the reliability is good, and the method is simple and feasible; after the measurement is finished, the vertical alignment instrument is detached from the centering plate 1, the centering plate 1 is detached from the support 2, all the detached components can be still repeatedly assembled and utilized, and the use cost is saved.
Preferably, the instrument connecting screw 11 is arranged at the center of the upper surface of the centering plate 1, and the support connecting screw 12 is arranged at the center of the lower surface of the centering plate 1, that is, the instrument connecting screw 11 and the support connecting screw 12 are coaxially arranged, so that the installation deflection can be avoided, the installation precision of the vertical collimator is improved, and the measurement precision is further improved.
In order to improve the firmness of the installation of the centering plate 1, the support connecting screw 12 has a certain length, preferably, the length of the support connecting screw 12 is 4-6 times that of the instrument connecting screw 11, taking the length of the instrument connecting screw 11 as 12mm as an example, the length of the support connecting screw 12 should be arranged between 48mm and 72mm, so that the connecting length between the centering plate 1 and the support 2 is ensured, and the locking firmness of the support 2 can be improved.
Further, the fixing baffle 3 can be installed between the centering plate 1 and the support 2, the fixing baffle 3 is preferably but not limited to a square plate-shaped structure, and can also be in a shape of a circle or a polygon, after installation, the upper surface of the fixing baffle 3 is attached to the lower surface of the centering plate 1, and the centering plate 1 and the fixing baffle 3 are installed on the support 2 through screws, so that installation strength and installation stability are improved, meanwhile, abrasion caused by the fact that the centering plate 1 is directly installed on the support 2 is avoided, the centering plate 1 and the support 2 can be effectively protected, and service lives of the centering plate 1 and the support 2 are prolonged.
The support 2 specifically comprises a supporting frame 21, a supporting leg 22 and an inclined strut 23, wherein the supporting frame 21 is used for supporting and fixing the baffle 3, and can be of a plate-shaped structure or a rectangular frame structure, so that the weight of the support 2 can be effectively reduced, and the light-weight installation of the support 2 is realized; the number of the supporting legs 22 is two, the two supporting legs are respectively arranged at two adjacent corners of the supporting frame 21, bolt holes are formed in the lower ends of the supporting legs 22, and the supporting legs 22 are fixed on a wall or external equipment through bolts; the inclined strut 23 is used for connecting the supporting leg 22 and the supporting frame 21, one end of the inclined strut 23 is installed on the bottom surface of the supporting frame 21, and the other end of the inclined strut 23 is installed on the inner side surface of the supporting leg 22, so that the supporting frame 21, the supporting leg 22 and the inclined strut 23 form a triangular supporting structure, and therefore the supporting strength and the supporting stability of the centering plate 1 can be increased. For improved mounting stability, the support frame 21, legs 22 and braces 23 are welded together.
When the tunnel shaft construction control measurement is carried out, the following measurement steps are sequentially carried out:
the method comprises the following steps: installing a bracket 2 at a wellhead of the tunnel shaft;
step two: aligning a support connecting screw 12 of the centering plate 1 with a threaded hole on the support 2 and screwing, and mounting the centering plate 1 on the support 2;
step three: erecting a prism, and accurately measuring the central data of the centering plate 1 by using a total station;
step four: erecting the vertical alignment instrument on the centering plate 1, and ensuring that the vertical alignment instrument is attached to the upper surface of the centering plate 1;
step five: and opening the vertical collimator, and allowing laser beams of the vertical collimator to pass through the light holes 13 to realize point location downloading so as to realize tunnel shaft control measurement.
The accurate measurement of the height of the tunnel vertical shaft can be realized through the steps.
It is right above the utility model provides a tunnel shaft construction measuring device has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. The utility model provides a tunnel shaft construction measuring device, its characterized in that includes centering plate (1) and is used for the installation support (2) to centering plate (1), the upper surface to centering plate (1) is equipped with instrument connecting screw (11) that are used for connecting the plumb aligner, the lower surface to centering plate (1) is equipped with and is used for connecting support connecting screw (12) of support (2), instrument connecting screw (11) centering plate (1) with support connecting screw (12) are equipped with light trap (13) that run through.
2. The tunnel shaft construction measuring device according to claim 1, wherein the instrument connection screw (11) is provided at a central position of an upper surface of the centering plate (1), and the bracket connection screw (12) is coaxially provided with the instrument connection screw (11).
3. The tunnel shaft construction measuring device according to claim 2, characterized in that the length of the bracket connection screw (12) is 4-6 times the length of the instrument connection screw (11).
4. The tunnel shaft construction measuring device according to claim 3, further comprising a fixing baffle (3) installed to be fitted to a lower surface of the centering plate (1), the fixing baffle (3) being connected with the bracket (2) by a screw.
5. The tunneling shaft construction measuring device according to claim 4, wherein the support frame (2) includes a supporting frame (21) for mounting the fixed baffle (3), legs (22) supported at both corners of the supporting frame (21), respectively, and braces (23) for supporting the supporting frame (21) and the legs (22).
6. The tunnel shaft construction measuring device according to claim 5, characterized in that the supporting frame (21), the legs (22) and the braces (23) are welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920900975.8U CN209894184U (en) | 2019-06-14 | 2019-06-14 | Tunnel shaft construction measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920900975.8U CN209894184U (en) | 2019-06-14 | 2019-06-14 | Tunnel shaft construction measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209894184U true CN209894184U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920900975.8U Active CN209894184U (en) | 2019-06-14 | 2019-06-14 | Tunnel shaft construction measuring device |
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| Country | Link |
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| CN (1) | CN209894184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504247A (en) * | 2020-12-09 | 2021-03-16 | 中铁三局集团广东建设工程有限公司 | Contact measurement point throwing system and measurement method |
-
2019
- 2019-06-14 CN CN201920900975.8U patent/CN209894184U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504247A (en) * | 2020-12-09 | 2021-03-16 | 中铁三局集团广东建设工程有限公司 | Contact measurement point throwing system and measurement method |
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