Total station bracket suitable for small-diameter tunnel TBM construction measurement

Abstract

The utility model relates to the technical field of water conservancy TBM construction measurement, in particular to a total station bracket suitable for small-diameter tunnel TBM construction measurement, which comprises a supporting panel, a mounting plate is welded at the rear end of the supporting panel, a supporting plate is welded on the bottom wall of the front end of the supporting panel, a centering disc is arranged on the surface of the supporting panel, and a connecting bolt is arranged on the centering disc. The mounting plate is matched with the supporting plate, so that the whole body is mounted in a triangular form, good stability is presented, and a good stable posture can also be presented when vibration caused by TBM tunneling is dealt with; the total station is lifted through the small centering disc, the possibility that the total station is scratched by a trolley and an electrical pipeline is greatly reduced during wire measurement, installation is easy and fast, even one person can complete installation within a short time, the station moving time during complete display measurement is greatly shortened, and the working efficiency is improved. Time is saved for the whole process of TBM construction operation, and the TBM daily excavation footage is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy TBM construction measurement, in particular to a total station bracket suitable for TBM construction measurement of small-diameter tunnels. Background Art

[0002] With the development of my country's new power system with new energy as the main body, the demand for the pumped storage industry continues to increase. TBM (full-section excavation machine) has huge development space in the field of pumped storage applications due to its advantages in safety, environmental protection, efficiency, quality, economy and other aspects. The construction measurement technology supporting TBM is also gradually maturing. However, in the small-diameter TBM construction measurement, the installation of the total station must face the problems of too narrow measurement channel, the influence of the trolley electrical pipeline on the measurement channel, and the influence of the measurement control point on the slag battery car of the small-diameter TBM forming tunnel. Therefore, there are higher requirements for the total station bracket in the process of excavation measurement, and the existing total station bracket cannot adapt to the above environment.

[0003] In order to avoid the messy electrical pipelines in the narrow measurement channel, so that the total station at the measuring station can smoothly carry out the guided measurement work and the target prism back-viewing work, the laser target of the TBM is often installed at the support shield position, which is close to the face. However, the construction of the TBM has a large vibration. The measuring station bracket is usually installed on the vault or side wall behind the laser target, which is easily affected by the vibration and causes the total station bubble to shift. The measurement accuracy of the guidance system instrument is directly related to the accuracy of the tunnel forming line, affecting the tunnel penetration quality.

[0004] The cross section of the tunnel formed by a small-diameter TBM is small. If the measurement control points are measured by burying measuring nails in the construction site, there will be two disadvantages:

[0005] ① Track laying, later support and other processes will cause the deployed control points to be unable to be used normally;

[0006] ② The method of burying measuring nails as control points requires the use of traditional tripods to set up the instrument. When the slag is discharged, the battery vehicles go in and out frequently, which not only affects the observation line of sight but also poses a safety hazard to on-site personnel and equipment.

[0007] To this end, the utility model provides a total station bracket suitable for TBM construction measurement of small-diameter tunnels, which reduces the impact of vibration on the instrument during TBM excavation and does not affect on-site construction when measuring and laying out conductors. Utility Model Content

[0008] The utility model aims to solve the problems existing in the prior art and proposes a total station bracket suitable for TBM construction measurement of small-diameter tunnels.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A total station bracket suitable for TBM construction measurement of small-diameter tunnels includes a support panel, a mounting plate is welded to the rear end of the support panel, an inclined support plate is welded to the front bottom wall, the rear side wall of the bottom end of the support plate is flush with the rear end surface of the mounting plate, connection holes are provided on both sides of the mounting plate and on the rear side wall of the bottom end of the support plate, a centering plate is provided on the surface of the support panel, and connecting bolts are provided on the centering plate.

[0011] Preferably, reinforcing plates are provided on both sides of the support panel, the bottom walls at the front ends of the two connecting plates are welded together with connecting plates, and the upper ends of the support plates are welded to the connecting plates.

[0012] Preferably, the upper end of the support plate is detachably connected to the connecting plate via a fastener.

[0013] Preferably, the support plate includes two symmetrically arranged bridge frames, the upper ends of the two bridge frames are welded with a horizontal plate, and the bottom ends of the two bridge frames are welded with a vertical plate.

[0014] Preferably, the centering disk axis is provided with a through mounting hole, the bottom axis is welded with a rectangular tube, the supporting panel is provided with a rectangular slot for inserting the rectangular tube, the bottom end of the supporting panel is provided with a rectangular sleeve matching the rectangular tube at the rectangular slot, and the connecting bolt is inserted into the sleeve from below.

[0015] Preferably, a T-shaped fixing sleeve is threadedly mounted on the connecting bolt, the bottom wall of the rectangular tube is provided with a through hole matching the small diameter of the lower end of the fixing sleeve, and the large diameter bottom wall of the upper end of the fixing sleeve abuts against the inner bottom wall of the rectangular tube.

[0016] Preferably, the mounting plate is symmetrically welded with clamping plates along the upper edge of the supporting panel, and the rear end of the supporting panel is inserted between the two clamping plates and welded to the two clamping plates.

[0017] Compared with the prior art, the utility model provides a total station bracket suitable for TBM construction measurement of small-diameter tunnels, which has the following beneficial effects:

[0018] 1. Through the cooperation of the three fastening bolts on the mounting plate and the support plate, the overall installation is triangular and presents good stability. It can also show a good stable posture when dealing with vibrations caused by TBM excavation.

[0019] 2. Compared with the traditional tripod installation, this solution is embedded on the wall and suspended in the air. The total station is lifted by a small centering plate. When conducting wire measurement, it not only greatly reduces the possibility of the total station being scratched by the trolley and electrical pipelines, and will not affect the construction progress, but also has simple and quick installation. Even one person can complete the installation work in a short time, which greatly shortens the time of moving the station during the measurement operation, saves time for the overall process of TBM construction, and significantly improves the daily excavation footage of TBM; and when laying the control network, the control points can be better saved to reduce the impact of other processes.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the welding of the centering plate and the supporting panel of the utility model.

[0022] Figure 2 For the utility model Figure 1 A bottom-up stereoscopic diagram of .

[0023] Figure 3 It is a three-dimensional schematic diagram of the detachable connection between the centering plate and the supporting panel of the utility model.

[0024] Figure 4 For the utility model Figure 3 A bottom-up stereoscopic diagram of .

[0025] Figure 5 For the utility model Figure 3 Schematic diagram of the cross-section at the axis of the centering disk.

[0026] Figure 6 For the utility model Figure 3 Front view of .

[0027] In the figure: 1. Support panel; 2. Mounting plate; 3. Support plate; 4. Centering plate; 5. Connecting bolts; 6. Reinforcement plate; 7. Connecting plate; 8. Rectangular tube; 9. Pipe sleeve; 10. Fixing sleeve; 11. Clamp plate; 301. Horizontal plate; 302. Vertical plate; 303. Bridge. DETAILED DESCRIPTION

[0028] The following will be combined with the attached embodiment of the present utility model Figure 1-6, the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0029] In order to solve the problems existing in the prior art, the present embodiment provides a total station bracket suitable for TBM construction measurement of small-diameter tunnels, including a support panel 1, a mounting plate 2 is welded to the rear end of the support panel 1, and an inclined support plate 3 is welded to the bottom wall of the front end, the rear side wall of the bottom end of the support plate 3 is flush with the rear end surface of the mounting plate 2, connecting holes are provided on both sides of the mounting plate 2 and on the rear side wall of the bottom end of the support plate 3, a centering plate 4 is provided on the surface of the support panel 1, and a connecting bolt 5 is provided on the centering plate 4.

[0030] Principle details of this embodiment:

[0031] A total station bracket suitable for TBM construction measurement of small-diameter tunnels includes a support panel 1, a mounting plate 2 is welded to the rear end of the support panel 1, an inclined support plate 3 is welded to the bottom wall of the front end of the support panel 1, the rear side wall of the bottom end of the support plate 3 is flush with the rear end surface of the mounting plate 2, connecting holes are provided on both sides of the mounting plate 2 and the rear side wall of the bottom end of the support plate 3, the two connecting holes on the mounting plate 2 are symmetrically arranged, the mounting holes are used for fastener installation, a centering plate 4 is provided on the surface of the support panel 1, and a connecting bolt 5 is provided on the centering plate 4.

[0032] When using, first select a suitable position on the wall of the tunnel on the side of the TBM tail marker light, mark the installation space of the total station bracket on the wall with self-spray paint, use a rechargeable 14mm hand drill to drill holes at the marked positions, and install 12mm expansion screws into the holes. Fasten the total station to the centering plate 4 through the connecting bolts 5, and then fasten the bottom of the mounting plate 2 and the support plate 3 through the connecting holes and the locking nuts to the wall inside the tunnel. Then use a level ruler to check and correct it and tighten it.

[0033] Through the cooperation of the three fastening bolts on the mounting plate 2 and the support plate 3, the overall installation is triangular and presents good stability, and can also show a good stable posture when dealing with vibrations caused by TBM excavation. Compared with the traditional tripod installation, this solution is embedded in the wall and suspended in the air. The total station is lifted by the small centering plate 4. When conducting wire measurement, it not only greatly reduces the possibility of the total station being scratched by the trolley and electrical pipelines, but also has simple and fast installation. Even one person can complete the installation work in a short time, which greatly shortens the time of moving the station during the full-scale measurement operation, saves time for the overall process of TBM construction, and significantly improves the daily excavation footage of TBM; and when laying the control network, the control points can be better saved to reduce the impact of other processes.

[0034] In a further embodiment of the present solution, reinforcing plates 6 are provided on both sides of the support panel 1, the front bottom walls of the two connecting plates 7 are welded with connecting plates 7, and the upper end of the support plate 3 is welded to the connecting plates 7. The two reinforcing plates 6 increase the overall strength of the support panel 1, increase the bending resistance of the support panel 1, prevent the support panel 1 from bending due to long-term load of the total station, and affect the measurement angle and accuracy, thereby increasing the service life of the support panel 1.

[0035] In a further embodiment of the present solution, the front end load of the support panel 1 is entirely dependent on its own bending resistance and the support of the support plate 3. Therefore, in the present embodiment, the upper end of the support plate 3 is detachably connected to the connecting plate 7 via a fastener. Thus, the support plate 3 can be disassembled and replaced when a part is bent or deformed, rather than being discarded as a whole.

[0036] In a further embodiment of the present scheme, the support plate 3 includes two symmetrically arranged bridge frames 303, the upper ends of the two bridge frames 303 are commonly welded with a horizontal plate 301, and the bottom ends are commonly welded with a vertical plate 302, the horizontal plate 301 and the vertical plate 302 are components fastened to the outside via fasteners, and the two bridge frames 303 have two symmetrical supporting forces. Compared with a single axial support, the two bridge frames 303 are more evenly distributed, so that the overall supporting effect is more stable.

[0037] In a further embodiment of the present scheme, the centering plate 4 is provided with a through mounting hole at its axis, a rectangular tube 8 is welded at its bottom axis, a rectangular notch is provided on the support panel 1 for inserting the rectangular tube 8, a rectangular tube sleeve 9 is provided at the bottom end of the support panel 1 at the rectangular notch to match the rectangular tube 8, a plug hole is provided at the bottom wall axis of the tube sleeve 9, a threaded hole is provided at the bottom wall axis of the rectangular tube 8, and the connecting bolt 5 is threadedly connected with the threaded hole after being inserted from the plug hole. In this embodiment, the centering plate 4 is designed to be separated from the support panel 1. Compared with the design of welding the centering plate 4 and the support panel 1 as one body, the fastening connection is separable and can be replaced separately, and the assembly and production are more convenient. The cooperation between the rectangular tube 8 and the rectangular notch ensures that the centering plate 4 will not deflect and affect the detection viewing angle after being embedded in the support panel 1.

[0038] In a further embodiment of the present scheme, a T-shaped fixing sleeve 10 is threadedly mounted on the connecting bolt 5, and a through hole matching the small diameter of the lower end of the fixing sleeve 10 is provided on the bottom wall of the rectangular tube 8, and the upper end face of the fixing sleeve 10 is hexagonal. After the connecting bolt 5 is inserted into the jack, the fixing sleeve 10 is threadedly screwed on the connection until the large diameter bottom wall of the upper end of the fixing sleeve 10 abuts against the inner bottom wall of the rectangular tube 8. Through the cooperation of the fixing sleeve 10 and the connecting bolt 5, the centering plate 4 is fixed on the supporting panel 1. At this time, under the action of the fixing sleeve 10, the connecting bolt 5 can be deflected, so when installing the total station, the connecting bolt 5 is screwed instead of rotating the total station, which improves the convenience of installation.

[0039] Preferably, another installation method can be provided, in which the connecting bolt 5 is arranged on the base of the total station, a socket is arranged on the axis center of the bottom wall of the rectangular tube 8, and a threaded hole is arranged on the axis center of the bottom wall of the pipe sleeve 9, and the small diameter of the lower end of the fixing sleeve 10 is threadedly connected with the threaded hole, so that the centering plate 4 is fastened to the supporting panel 1. When installing the total station, the connecting bolt 5 passes through the inner hole of the fixing sleeve 10 and out from the bottom of the pipe sleeve 9, and then passes through the locking nut to complete the fastening operation of the total station.

[0040] In a further embodiment of the present scheme, a clamping plate 11 is symmetrically welded along the supporting panel 1 on the mounting plate 2, and the rear end of the supporting panel 1 is inserted between the two clamping plates 11 and welded to the two clamping plates 11, so that the connection strength between the supporting panel 1 and the mounting plate 2 is increased through the two clamping plates 11.

[0041] In this solution, the supporting panel 1, the mounting plate 2, the supporting plate 3, the centering plate 4, the reinforcing plate 6, the connecting plate 7 and other accessories are all made of steel plates.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A total station bracket suitable for small diameter tunnel TBM construction measurement, characterized in that: The invention comprises a support panel (1), wherein a mounting plate (2) is welded to the rear end of the support panel (1), and an inclined support plate (3) is welded to the bottom wall of the front end; the rear side wall of the bottom end of the support plate (3) is flush with the rear end surface of the mounting plate (2); connection holes are provided on both sides of the mounting plate (2) and on the rear side wall of the bottom end of the support plate (3); a centering plate (4) is provided on the surface of the support panel (1), and a connecting bolt (5) is provided on the centering plate (4).

2. A total station bracket suitable for small diameter tunnel TBM construction measurement according to claim 1, characterized in that: Reinforcing plates (6) are provided on both sides of the support panel (1); the front end bottom walls of the two connecting plates (7) are welded together with a connecting plate (7); and the upper end of the support plate (3) is welded to the connecting plate (7).

3. A total station bracket suitable for small diameter tunnel TBM construction measurement according to claim 2, characterized in that: The upper end of the support plate (3) is detachably connected to the connecting plate (7) via a fastener.

4. A total station bracket suitable for small diameter tunnel TBM construction measurement according to claim 1, characterized in that: The support plate (3) comprises two symmetrically arranged bridge frames (303), wherein a horizontal plate (301) is welded to the upper ends of the two bridge frames (303) and a vertical plate (302) is welded to the lower ends.

5. A total station bracket suitable for small diameter tunnel TBM construction measurement according to claim 1, characterized in that: The centering plate (4) is provided with a through mounting hole at its axis, and a rectangular tube (8) is welded to the axis at its bottom end. The support panel (1) is provided with a rectangular notch for the rectangular tube (8) to be inserted into. A rectangular pipe sleeve (9) matching with the rectangular tube (8) is provided at the bottom of the support panel (1) at the rectangular notch, and a connecting bolt (5) is inserted into the pipe sleeve (9) from below.

6. A total station bracket suitable for small diameter tunnel TBM construction measurement according to claim 1, characterized in that: A T-shaped fixing sleeve (10) is threadedly mounted on the connecting bolt (5); a through hole with a small diameter matching the lower end of the fixing sleeve (10) is provided on the bottom wall of the rectangular tube (8); and the large diameter bottom wall of the upper end of the fixing sleeve (10) abuts against the inner bottom wall of the rectangular tube (8).

7. A total station bracket suitable for small diameter tunnel TBM construction measurement according to claim 1, characterized in that: The mounting plate (2) is symmetrically welded with a clamping plate (11) along the support panel (1); the rear end of the support panel (1) is inserted between the two clamping plates (11) and welded to the two clamping plates (11).

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