Inverted arch five-line laser positioning device for tunnel

Abstract

The utility model provides an inverted arch five-line laser positioning device for a tunnel, which belongs to the technical field of inverted arch five-line positioning and is characterized in that a connecting frame, a positioning screw I, an inner sleeve, a positioning screw II and a fixing seat are matched with one another, so that a vertical column is vertically fixed on the side wall of a main beam of an inverted arch trestle of the tunnel; the phenomenon that the laser transmitter connected with the laser transmitter is in contact with a foreign object and topples over in the using process is avoided, and the stability is improved; the heights of the five laser emitters are adjusted through mutual cooperation of a sliding sleeve and a positioning screw rod IV, and the horizontal positions of the five laser emitters are adjusted through mutual cooperation of a movable rod and a positioning screw rod III, so that it is ensured that the distances between the laser emitters and the side wall are the same, and the positioning accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of inverted arch five-line positioning, and specifically discloses an inverted arch five-line laser positioning device for a tunnel. Background Art

[0002] The five lines of the invert are a means to solve the inaccurate installation position and linear unevenness of steel bars and waterproof materials in tunnel invert construction. The five lines of the invert specifically refer to the elevation line of the top surface of the small side wall concrete, the top line of the short steel bars extending out of the invert, the top line of the long steel bars extending out of the invert, the upper line of the waterproof board, and the upper line of the geotextile. It is an effective control measure to reduce construction errors, enhance the quality of invert construction, and improve the standardization of tunnel construction.

[0003] In the past, the five-line construction method of the inverted arch on the wall was to locate the elevation of the top surface of the small side wall concrete, the top of the short steel bars extending from the inverted arch, the top of the long steel bars extending from the inverted arch, the upper edge of the waterproof board, and the upper edge of the geotextile on the primary support surface through measurement and layout. The five lines of the inverted arch section were marked by spraying paint or marking thick ink lines. There is also a method to locate the five-line elevation points at the front and rear ends of the inverted arch through measurement and layout, and then adjust the one-line laser lines of the five locators to correspond to the layout points at each height, two points in one line, so that the five laser lines are irradiated on the wall. Compared with the traditional spraying paint or marking line method, this method has the advantages of simple installation, convenient operation, time saving, beautiful lines, material saving, and reduced risks of high-altitude operations.

[0004] According to the search, Chinese patent literature, announcement number: CN218469868U, discloses a laser line projector, which emits a laser beam and forms a laser surface through a prism light guide system to project a horizontal laser line. The five-line upper wall uses the laser line projector to accurately control its position, and finally achieves the purpose of precise control. Through laser positioning, the geotextile elevation line, waterproof board elevation line, inverted arch long steel bar identification line, inverted arch short steel bar identification line and longitudinal blind pipe identification line are marked, which is convenient for standardized operation. At the same time, the laser line positioning can correct the deviation at any time. However, although the laser line projector can realize the height adjustment of the laser transmitter, it does not have the horizontal position adjustment function. When used for the main beam of the tunnel inverted arch trestle, since most of its side walls are arc-shaped structures, the distances between the five laser line projectors and the side walls are different, and visual errors may occur, and the accuracy cannot be further improved. In addition, the bottom plate and the top plate cannot be fixed together with the arc-shaped side walls. During use, they may contact with foreign objects and tip over, and the stability cannot be improved. Utility Model Content

[0005] The utility model provides a tunnel invert arch five-line laser positioning device to solve the problems raised in the above background technology.

[0006] The above-mentioned tunnel invert arch five-line laser positioning device comprises a column, a connecting frame, a positioning screw rod I, an inner sleeve, a positioning screw rod II, a fixed seat, a sliding sleeve, a movable rod, a positioning screw rod III, a positioning screw rod IV, an outer sleeve, a laser transmitter and a positioning screw rod V; the connecting frame comprises a vertical tube and a transverse tube vertically connected to the vertical tube, the vertical tube is sleeved on the end of the column, the vertical tube is provided with a threaded hole I, and the transverse tube is provided with a threaded hole II; the positioning screw rod I passes through the threaded hole I of the connecting frame, and the first end presses the column; the inner sleeve is slidably connected to the transverse tube of the connecting frame, the first end of the inner sleeve is located in the transverse tube, and the second end of the inner sleeve is located outside the transverse tube ; The positioning screw II passes through the threaded hole II of the connecting frame, and the first end presses the inner sleeve; the fixed seat is rotatably connected to the second end of the inner sleeve; the sliding sleeve is arranged on the column, located between the two connecting frames, and is provided with threaded hole III and threaded hole IV; the movable rod slides through the sliding sleeve, perpendicular to the column; the positioning screw III passes through the threaded hole III of the sliding sleeve, and the first end presses the column; the positioning screw IV passes through the threaded hole IV of the sliding sleeve, and the first end presses the movable rod; the outer sleeve is fixed on the movable rod, perpendicular to the movable rod and the column, and is provided with threaded hole V; the laser emitter passes through the outer sleeve; the positioning screw V passes through the threaded hole V of the outer sleeve, and the first end presses the laser emitter.

[0007] The above-mentioned tunnel invert arch five-line laser positioning device also includes a connecting piece and a pin shaft; the fixing seat includes a fixing plate and a connecting ear arranged on the fixing plate; a connecting hole I is arranged on the fixing plate; a connecting hole II is arranged on the connecting ear and on the second end of the inner sleeve; the connecting piece passes through the connecting hole I of the fixing plate and is used to be connected to the side wall of the main beam of the tunnel invert arch trestle; the pin shaft passes through the connecting hole II of the connecting ear and connects the second end of the inner sleeve and the connecting ear.

[0008] In the above-mentioned tunnel invert arch five-line laser positioning device, the column is a square column; the inner sleeve is a square sleeve; the connecting frame is provided with a square hole matching with the column and the inner sleeve; the movable rod is a square rod; and the sliding sleeve is provided with a square hole matching with the column and the movable rod.

[0009] In the above-mentioned tunnel invert arch five-line laser positioning device, the second end of the inner sleeve is an arc-shaped end.

[0010] In the above-mentioned tunnel invert arch five-line laser positioning device, the second ends of the positioning screw rods I, II, III, IV and V are all provided with screw handles.

[0011] In the above-mentioned tunnel invert five-line laser positioning device, two positioning screws V are arranged on each outer sleeve.

[0012] In the above-mentioned tunnel invert arch five-line laser positioning device, the number of sliding sleeves is five, which are arranged in sequence from top to bottom.

[0013] Compared with the prior art, the utility model has the following beneficial effects.

[0014] 1. The utility model vertically fixes the column on the side wall of the tunnel inverted arch trestle main beam through the cooperation of the connecting frame, the positioning screw rod I, the inner sleeve, the positioning screw rod II and the fixing seat, and prevents the laser transmitter connected thereto from contacting with foreign objects and tipping over during use, thereby improving stability;

[0015] 2. The utility model adjusts the height of the five laser emitters by the cooperation between the sliding sleeve and the positioning screw IV, and adjusts the horizontal position of the five laser emitters by the cooperation between the movable rod and the positioning screw III, thereby ensuring that the distance between the laser emitters and the side walls is the same, thereby improving the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural schematic diagram of a five-line laser positioning device for an invert for a tunnel;

[0018] Figure 2 is a structural schematic diagram of a connecting frame;

[0019] Figure 3 It is a schematic diagram of the structure of the sliding sleeve;

[0020] Figure 4 It is a structural schematic diagram of the movable rod.

[0021] Among them: 1. column; 2. connecting frame; 3. positioning screw I; 4. inner sleeve; 5. positioning screw II; 6. fixed seat; 7. sliding sleeve; 8. movable rod; 9. positioning screw III; 10. positioning screw IV; 11. outer sleeve; 12. laser transmitter; 13. positioning screw V. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The present embodiment provides a five-line laser positioning device for an inverted arch of a tunnel, comprising a column 1, a connecting frame 2, a positioning screw I3, an inner sleeve 4, a positioning screw II5, a fixing seat 6, a sliding sleeve 7, a movable rod 8, a positioning screw III9, a positioning screw IV10, an outer sleeve 11, a laser transmitter 12 and a positioning screw V13; the connecting frame 2 comprises a vertical tube and a transverse tube vertically connected to the vertical tube, the vertical tube is sleeved on the end of the column 1, a threaded hole I is provided on the vertical tube, and a threaded hole II is provided on the transverse tube; the positioning screw I3 passes through the threaded hole I of the connecting frame 2, and the first end presses the column 1; the inner sleeve 4 is slidably connected to the transverse tube of the connecting frame 2, the first end of the inner sleeve 4 is located inside the transverse tube, and the second end of the inner sleeve 4 is located outside the transverse tube ; The positioning screw Ⅱ5 passes through the threaded hole Ⅱ of the connecting frame 2, and the first end presses the inner sleeve 4; the fixing seat 6 is rotatably connected to the second end of the inner sleeve 4; the sliding sleeve 7 is slidably sleeved on the column 1, located between the two connecting frames 2, and is provided with a threaded hole Ⅲ and a threaded hole Ⅳ; the movable rod 8 slides through the sliding sleeve 7, perpendicular to the column 1; the positioning screw Ⅲ9 passes through the threaded hole Ⅲ of the sliding sleeve 7, and the first end presses the column 1; the positioning screw Ⅳ10 passes through the threaded hole Ⅳ of the sliding sleeve 7, and the first end presses the movable rod 8; the outer sleeve 11 is fixed on the movable rod 8, perpendicular to the movable rod 8 and the column 1, and is provided with a threaded hole Ⅴ; the laser emitter 12 passes through the outer sleeve 11; the positioning screw Ⅴ13 passes through the threaded hole Ⅴ of the outer sleeve 11, and the first end presses the laser emitter 12.

[0024] The above-mentioned tunnel invert arch five-line laser positioning device also includes a connecting piece and a pin shaft; the fixing seat 6 includes a fixing plate and a connecting ear arranged on the fixing plate; a connecting hole I is arranged on the fixing plate; a connecting hole II is arranged on the connecting ear and on the second end of the inner sleeve 4; the connecting piece passes through the connecting hole I of the fixing plate and is used to be connected to the side wall of the main beam of the tunnel invert arch trestle; the pin shaft passes through the connecting hole II of the connecting ear and connects the second end of the inner sleeve 4 and the connecting ear.

[0025] In the above-mentioned tunnel invert arch five-line laser positioning device, the column 1 is a square column; the inner sleeve 4 is a square sleeve; the connecting frame 2 is provided with a square hole matching with the column 1 and the inner sleeve 4; the movable rod 8 is a square rod; the sliding sleeve 7 is provided with a square hole matching with the column 1 and the movable rod 8.

[0026] In the above-mentioned tunnel invert arch five-line laser positioning device, the second end of the inner sleeve 4 is an arc-shaped end to prevent interference when the fixing seat 6 rotates relative to the second end of the inner sleeve 4.

[0027] In the above-mentioned tunnel invert arch five-line laser positioning device, the second ends of the positioning screw rods I3, II5, III9, IV10 and V13 are all provided with screw handles.

[0028] In the above-mentioned tunnel invert five-line laser positioning device, two positioning screws V13 are arranged on each outer sleeve 11.

[0029] In the above-mentioned tunnel invert arch five-line laser positioning device, the number of the sliding sleeves 7 is five, which are arranged in sequence from top to bottom.

[0030] The working principle of the above-mentioned tunnel inverted arch five-line laser positioning device is as follows: first, the sliding sleeve 7 is sleeved on the outside of the column 1, and then the connecting frame 2 is sleeved on both ends of the column 1, and fixed with the positioning screw Ⅰ3, the fixing seat 6 is fitted with the side wall of the tunnel inverted arch trestle main beam, and the position of the column 1 is adjusted. During the adjustment process, the fixing seat 6 can be turned along the second end of the inner sleeve 4, and the inner sleeve 4 can be moved horizontally along the inside of the connecting frame 2. When the column 1 is in a vertical state, the fixing seat 6 is fixed to the side wall with a connecting piece (such as a bolt), and then the positioning screw Ⅱ5 is tightened to fix the inner sleeve 4. It is suitable for the side wall of the arc-shaped tunnel inverted arch trestle main beam, and slides up and down. Sliding sleeve 7, adjust the spacing of sliding sleeve 7 and the distance to the ground. When the sliding sleeve 7 moves to a suitable height, tighten the positioning screw III9 to position the sliding sleeve 7. The laser emitter 12 is sleeved inside the outer sleeve 11 and fixed with the positioning screw V13 to prevent the laser emitter 12 from falling out. Move the movable rod 8 horizontally along the inside of the sliding sleeve 7 to adjust the spacing between the laser emitter 12 and the side wall. When the laser emitter 12 moves to a suitable position, tighten the positioning screw IV10 to position the movable rod 8. This can ensure that the five laser emitters 12 have the same spacing from the side wall of the arc-shaped tunnel invert trestle main beam, thereby improving the accuracy of positioning.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A five-line laser positioning device for tunnel invert, characterized in that: It comprises a column (1), a connecting frame (2), a positioning screw rod I (3), an inner sleeve (4), a positioning screw rod II (5), a fixing seat (6), a sliding sleeve (7), a movable rod (8), a positioning screw rod III (9), a positioning screw rod IV (10), an outer sleeve (11), a laser transmitter (12) and a positioning screw rod V (13); The connecting frame (2) comprises a vertical tube and a transverse tube vertically connected to the vertical tube, the vertical tube is sleeved on the end of the column (1), a threaded hole I is provided on the vertical tube, and a threaded hole II is provided on the transverse tube; The positioning screw rod I (3) passes through the threaded hole I of the connecting frame (2), and the first end thereof presses against the column (1); The inner sleeve (4) is slidably connected to the transverse tube of the connecting frame (2), the first end of the inner sleeve (4) is located inside the transverse tube, and the second end of the inner sleeve (4) is located outside the transverse tube; The positioning screw II (5) passes through the threaded hole II of the connecting frame (2), and the first end thereof presses the inner sleeve (4); The fixing seat (6) is rotatably connected to the second end of the inner sleeve (4); The sliding sleeve (7) is slidingly mounted on the column (1), located between the two connecting frames (2), and is provided with a threaded hole III and a threaded hole IV; The movable rod (8) slides through the sliding sleeve (7) and is perpendicular to the column (1); The positioning screw III (9) passes through the threaded hole III of the sliding sleeve (7), and the first end thereof presses against the column (1); The positioning screw IV (10) passes through the threaded hole IV of the sliding sleeve (7), and the first end thereof presses the movable rod (8); The outer sleeve (11) is fixed on the movable rod (8), is perpendicular to the movable rod (8) and the column (1), and is provided with a threaded hole V; The laser emitter (12) passes through the outer sleeve (11); The positioning screw V (13) passes through the threaded hole V of the outer sleeve (11), and the first end thereof presses the laser emitter (12).

2. The tunnel invert five-line laser positioning device according to claim 1, characterized in that: Also includes connectors and pins; The fixing seat (6) comprises a fixing plate and a connecting ear arranged on the fixing plate; The fixing plate is provided with a connection hole I; The connecting ear and the second end of the inner sleeve (4) are both provided with a connecting hole II; The connecting piece passes through the connecting hole I of the fixing plate and is used to connect with the side wall of the tunnel invert trestle main beam; The pin passes through the connecting hole II of the connecting ear to connect the second end of the inner sleeve (4) and the connecting ear.

3. The tunnel invert five-line laser positioning device according to claim 2, characterized in that: The column (1) is a square column; The inner sleeve (4) is a square sleeve; The connecting frame (2) is provided with a square hole that matches the column (1) and the inner sleeve (4); The movable rod (8) is a square rod; The sliding sleeve (7) is provided with a square hole which matches with the upright column (1) and the movable rod (8).

4. The tunnel invert five-line laser positioning device according to claim 3, characterized in that: The second end of the inner sleeve (4) is an arc-shaped end.

5. The five-line laser positioning device for tunnel invert according to claim 4 is characterized in that: The second ends of the positioning screw rods I (3), II (5), III (9), IV (10) and V (13) are all provided with screw handles.

6. The tunnel invert five-line laser positioning device according to claim 5, characterized in that: Two positioning screws V (13) are arranged on each outer sleeve (11).

7. The tunnel invert five-line laser positioning device according to claim 1, characterized in that: The number of the sliding sleeves (7) is five, and they are arranged in sequence from top to bottom.

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