Positioning device for mounting tunnel steel arch

Abstract

The utility model discloses a positioning device for mounting a tunnel steel arch, which comprises a tripod and a laser generator, the tripod comprises a base, supporting legs, a mounting table and a circular level bubble, and after the height and the levelness of the tripod are adjusted, the laser generator is arranged on the mounting table. Three vertical laser lines and one horizontal laser line are projected through the horizontal laser generator and the vertical laser generator, and the vertical laser generator is finely adjusted so that the distance between the three vertical laser lines can be adjusted, and auxiliary positioning of the perpendicularity and the distance can be conducted on the three rows of steel arches at a time. The steel arch positioning device has the advantages that a horizontal line and three vertical lines are thrown through the three laser generators, the distance between every two vertical lines is adjustable, accurate control over the left-right direction and the perpendicularity is achieved, and a steel arch can be accurately positioned. Meanwhile, the supporting legs can be telescopically positioned relative to the supporting legs, initial adjustment of the height is controlled, and the bottoms of the supporting legs are spine-shaped and are provided with discs, so that the supporting legs can be stably placed on the slag ground in the tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel steel arch construction, and particularly relates to a positioning device for tunnel steel arch installation. Background Art

[0002] When constructing and installing a tunnel steel arch, a positioning device needs to be used in cooperation for positioning the steel arch. However, the structure of the traditional auxiliary device is relatively complex, and the installation is inconvenient. During the use process, displacement or inclination is likely to occur, resulting in inaccurate positioning of the final installation position of the steel arch. In addition, the traditional auxiliary device can only assist in positioning one steel arch at a time, and due to the unsatisfactory positioning accuracy, the positioning of the steel arch is difficult and the working efficiency is low. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a positioning device for tunnel steel arch installation according to the deficiencies of the above-mentioned prior art. By using three laser generators to project a horizontal line and three vertical lines, and the distance between the vertical lines is adjustable, precise control of the left-right direction and verticality can be achieved, so that the steel arch can be accurately positioned.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A positioning device for tunnel steel arch installation, which includes a tripod and a horizontal and vertical laser generator and two vertical laser generators installed on the top of the tripod.

[0006] The tripod includes:

[0007] A base;

[0008] Three support feet, evenly arranged at the bottom of the base, and the support feet are all provided with telescopic legs;

[0009] An installation platform, which is connected to the top of the base through three foot screws and can adjust the height or level; and

[0010] A circular spirit level bubble, arranged on the upper surface of the installation platform and on the same side of the three laser generators; where

[0011] After the height and level of the tripod are adjusted, the horizontal and vertical laser generator and the vertical laser generators project four laser lines, three vertical and one horizontal, and the vertical laser generators are finely adjusted to adjust the distance between the three vertical laser lines, so as to assist in positioning the perpendicularity and distance of three rows of steel arches at one time.

[0012] Optionally, a horizontal laser emitting part is arranged at the lower part of the horizontal and vertical laser generator, and a first vertical laser emitting part is arranged at the upper part, and the first vertical laser emitting part is perpendicular to the horizontal laser emitting part.

[0013] Optionally, a second vertical laser emitting part with the same height as the first vertical laser emitting part is arranged at the upper part of the vertical laser generator.

[0014] Optionally, the vertical laser generator is provided with left and right fine-tuning knobs.

[0015] Optionally, the support feet are in a hollow tubular structure, and the outer diameter of the leg is equal to or slightly smaller than the inner diameter of the support foot.

[0016] Optionally, bolts are installed on the support feet, and the bolts penetrate into the support feet and contact the legs during rotation to fix and position the legs.

[0017] Optionally, the bottom feet of the legs are in a conical spike structure perpendicular to the downward direction.

[0018] Optionally, a horizontally arranged disc is provided on the leg above the bottom foot.

[0019] Optionally, handles are respectively arranged on the left and right sides of the base.

[0020] The advantages of the present utility model are as follows:

[0021] The present utility model projects a horizontal line and three vertical lines through three laser generators, and the distance between the vertical lines is adjustable, realizing precise control in the left and right directions and verticality, so that the steel arch can be accurately positioned. At the same time, the legs can be telescopically positioned relative to the support feet to control the initial adjustment of the height. The bottom of the legs is in a spiked shape and is provided with a disc, which can be stably placed on the crushed slag ground in the tunnel. The positioning device of the present utility model has a simple structure, convenient operation, good operation safety, and does not interfere with other construction at the same time, realizing high positioning accuracy of the steel arch. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the positioning device of the present utility model;

[0023] Figure 2 is an enlarged schematic diagram of the top of the positioning device of the present utility model. Detailed Embodiments

[0024] The respective markings in the figure are: 1, base; 2, support feet; 3, legs; 4, bolts; 5, mounting platform; 6, foot screws; 7, horizontal and vertical laser generator; 8, vertical laser generator; 9, circular spirit level; 11, handle; 31, spikes; 32, disc; 71, horizontal laser emission part; 72, first vertical laser emission part; 81, second vertical laser emission part; 82, fine adjustment knob.

[0025] Embodiment: Please refer to Figure 1 and Figure 2 As shown, a positioning device for the installation of tunnel steel arch frames in an embodiment is shown, which includes a tripod and a horizontal and vertical laser generator 7 and two vertical laser generators 8 installed on the top of the tripod. The tripod includes a base 1; three support feet 2 evenly arranged at the bottom of the base 1, and the support feet 2 are all provided with retractable legs 3; a mounting platform 5, which is connected to the top of the base 1 through three foot screws 6 so as to be adjustable in height or level; and a circular spirit level 9, arranged on the upper surface of the mounting platform 5 and on the same side of the three laser generators; wherein when the height and level of the tripod are adjusted, four laser lines, three vertical and one horizontal, are projected by the horizontal and vertical laser generator 7 and the vertical laser generators 8, and the vertical laser generator 8 is finely adjusted so that the spacing of the three vertical laser lines can be adjusted to assist in positioning the perpendicularity and spacing of three rows of steel arch frames at one time.

[0026] Optionally, a horizontal laser emission part 71 is arranged at the lower part of the horizontal and vertical laser generator 7, and a first vertical laser emission part 72 is arranged at the upper part, and the first vertical laser emission part 72 is perpendicular to the horizontal laser emission part 71.

[0027] Optionally, a second vertical laser emission part 81 with the same height as the first vertical laser emission part 72 is arranged at the upper part of the vertical laser generator 8.

[0028] Optionally, the vertical laser generator 8 is provided with left and right fine adjustment knobs 82.

[0029] Optionally, the support feet 2 are of a hollow tubular structure, and the outer diameter of the legs 3 is equal to or slightly smaller than the inner diameter of the support feet 2.

[0030] Optionally, bolts 4 are installed on the support feet 2, and the bolts 4 penetrate into the support feet 2 and contact the legs 3 during rotation to fix and position the legs 3.

[0031] Optionally, the bottom feet of the legs 3 are of a conical spike 31 structure vertically downward.

[0032] Optionally, a horizontally arranged disc 32 is provided on the legs 3 above the bottom feet.

[0033] Optionally, handles 11 are respectively arranged on the left and right sides of the base 1.

[0034] The characteristics and functions of the present utility model can be further understood through the following description.

[0035] Continue to refer to Figure 1 and Figure 2 As shown, the positioning device of this embodiment is placed in front of the rock wall to be constructed through a tripod. The legs 3 are telescopic, facilitating the initial adjustment of the height, and are fixed in length through bolts 4. The spikes 31 and discs 32 at the bottom of the legs 3 are more conducive to the stable placement of the tripod of the device on the slag floor in the tunnel. There is a circular spirit level bubble 9 on the upper surface of the base 1. By adjusting the three protruding foot screws 6, the circular spirit level bubble 9 can be centered inside the circular index ring to level the device. There are handling handles 11 on both sides of the base 1, facilitating the workers to move the device. An installation platform 5 is provided on the base 1, and three groups of laser generators are installed on the installation platform 5, namely two vertical laser generators 8 on both sides and a horizontal and vertical laser generator 7 between the two vertical laser generators 8. The lower part of the horizontal and vertical laser generator 7 projects a horizontal line through the horizontal laser emission part 71, and the upper part projects a vertical line through the first vertical laser emission part 72; the two vertical laser generators 8 on both sides project vertical lines through the second vertical laser emission part 81, and the distance between the vertical lines on both sides and the middle vertical line can be adjusted by rotating the fine adjustment knob 82 at the rear. The positioning device of this embodiment projects a total of four laser lines, three vertical and one horizontal, and can assist in positioning the perpendicularity and spacing of three rows of steel arch frames at one time.

[0036] The operation process of the positioning device of this embodiment is as follows:

[0037] Step 1: Use the arch anchor integrated machine to complete the initial installation on the rock wall in the tunnel;

[0038] Step 2: Position, level, turn on the laser line projector, and project a horizontal line and three vertical lines;

[0039] Step 3: Fine-tune the knobs of the lasers on both sides to control the distance between the vertical lines to be the designed distance of the steel arch frame;

[0040] Step 3: Adjust the position of the steel arch frame to achieve precise control of the left-right direction and perpendicularity;

[0041] Step 4: After the precise positioning of the steel arch frame, support the arch feet and drive the locking foot anchor pipes.

[0042] In summary, the utility model projects a horizontal line and three vertical lines through three laser generators, and the distance between the vertical lines is adjustable, achieving precise control of the left-right direction and perpendicularity, so that the steel arch can be accurately positioned. At the same time, the supporting legs can be telescopically positioned relative to the supporting feet to control the initial adjustment of the height. The bottom of the supporting legs is spiked and is provided with discs, which can be stably placed on the slag ground in the tunnel. The positioning device of the utility model has a simple structure, convenient operation, good operation safety, and does not interfere with other construction at the same time, achieving high positioning accuracy of the steel arch.

[0043] The above is only a preferred embodiment of the utility model, and does not limit the implementation mode and protection scope of the utility model. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustration content of the utility model should be included in the protection scope of the utility model.

Claims

1. A positioning device for the installation of tunnel steel arch frames, characterized in that, It includes a tripod, a horizontal and vertical laser generator mounted on the top of the tripod, and two vertical laser generators. The tripod includes: A base; Three support feet, evenly arranged at the bottom of the base, and each support foot is provided with a telescopic leg; A mounting table, which is connected to the top of the base through three leveling screws so that its height or levelness can be adjusted; and A circular spirit level, arranged on the upper surface of the mounting table and on the same side of the three laser generators; where After the height and levelness of the tripod are adjusted, four laser lines, three vertical and one horizontal, are projected by the horizontal and vertical laser generator and the vertical laser generators, and the vertical laser generators are finely adjusted to adjust the spacing between the three vertical laser lines, so as to assist in positioning the perpendicularity and spacing of three rows of steel arch frames at one time.

2. The positioning device for installing tunnel steel arch frames according to claim 1, characterized in that A horizontal laser emitting part is arranged at the lower part of the horizontal and vertical laser generator, and a first vertical laser emitting part is arranged at the upper part, and the first vertical laser emitting part is perpendicular to the horizontal laser emitting part.

3. The positioning device for installing the tunnel steel arch as claimed in claim 2, wherein, A second vertical laser emitting part with the same height as the first vertical laser emitting part is arranged at the upper part of the vertical laser generator.

4. The positioning device for installing the tunnel steel arch frame according to claim 3, wherein, The vertical laser generator is provided with left and right fine adjustment knobs.

5. The positioning device for installing the tunnel steel arch as claimed in claim 4, wherein, The support feet are of a hollow tubular structure, and the outer diameter of the legs is equal to or slightly smaller than the inner diameter of the support feet.

6. The positioning device for installing the tunnel steel arch as claimed in claim 5, wherein, Bolts are installed on the support feet, and when the bolts rotate, they penetrate into the support feet and contact the legs to fix and position the legs.

7. The positioning device for installing the tunnel steel arch as claimed in claim 6, wherein, The bottom feet of the legs are of a conical spike structure vertically downward.

8. The positioning device for installing the tunnel steel arch as claimed in claim 7, wherein, A horizontally arranged disc is provided on the legs above the bottom feet.

9. The positioning device for installing a tunnel steel arch as claimed in claim 8, wherein, Handles are respectively arranged on the left and right sides of the base.

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