Tunnel advanced small guide pipe positioning and guiding arch frame

Abstract

The utility model discloses a tunnel advanced small duct positioning and guiding arch frame, which comprises an arch frame unit, an arch frame unit, a guide unit, a guide unit, a guide unit and a control unit, the arch frame unit comprises an arch bar and a lifting mechanism, and the two ends of the arch bar are respectively erected on the lifting mechanism; the positioning unit comprises sliding seats and directional pipes, the multiple sliding seats are installed on the arch bars in a sliding mode, the directional pipes are arranged on the sliding seats at preset angles, and locking pieces used for fixing the sliding seats on the arch bars are arranged on the sliding seats; through the arrangement of the arch frame unit and the positioning unit, the advanced small pipe positioning and guiding arch frame design which is adjustable in height, flexible in movement, accurate in angle and easy and convenient to operate is achieved, the problems that in the prior art, a positioning device is tedious in installation, fixed in angle and the like are effectively solved, and the efficiency, precision and safety of tunnel advanced small pipe construction are remarkably improved.

Description

Technical Field

[0001] This utility model relates to a tunnel advanced small guide pipe positioning arch frame, belonging to the field of tunnel advanced construction technology. Background Technology

[0002] Pre-support grouting technology involves injecting small guide pipes into the surrounding rock. Its reinforcement mechanism is permeable grouting. For fractured and disturbed surrounding rock, grouting pressure is used to penetrate cement grout into the fractures. The cement grout acts as a binder, tightly bonding the damaged or fractured surrounding rock to form a complete whole, creating a load-bearing ring. This transforms the damaged rock strata into a stable zone, preventing rock loosening or detachment during tunnel construction due to excavation, thus achieving the goal of rock reinforcement. The small guide pipes, once injected into the surrounding rock, create a pipe roof effect within the tunnel, forming a pre-support system that enhances the stability and strength of the surrounding rock, prevents loosening and deformation, and significantly improves the safety of tunnel construction.

[0003] Existing literature (CN210622814U) discloses an angle positioning device for pre-installed small guide pipes, which includes a positioning seat consisting of an upper end cover and a lower end cover mounted on a tunnel steel frame. The upper end cover is parallel to the lower end cover, and a guide tube is provided on the upper end cover. The guide tube is set at a 15° angle to the end face normal of the upper end cover, deviating from the direction away from the tunnel steel frame, and extends through the upper end cover to the lower end cover. A circular through hole is opened on the lower end cover, with its center falling on the extension line of the guide tube axis. The diameter of the circular through hole is larger than the diameter of the guide tube. The extended guide tube provides good guidance and positioning for the pre-installed small guide pipes, ensuring accurate angle positioning of the pre-installed small guide pipes and reducing errors during construction. However, this device requires individual installation and positioning, which is inconvenient to operate. Furthermore, its angle cannot be adjusted according to actual needs, which to some extent affects the construction progress and quality. Utility Model Content

[0004] Based on the above, this utility model provides a tunnel pre-conduit positioning guide arch to overcome the shortcomings of the prior art.

[0005] The technical solution of this utility model is: a tunnel pre-conductor positioning guide arch frame, comprising:

[0006] An arch frame unit includes an arch rod and a lifting mechanism, with both ends of the arch rod mounted on the lifting mechanism.

[0007] The positioning unit includes a sliding seat and a directional tube. A plurality of the sliding seats are slidably mounted on the arch rod. The directional tube is set on the sliding seat at a preset angle. The sliding seat is provided with a locking member for fixing it to the arch rod.

[0008] In one example, the sliding seat is provided with a support plate, one end of which has an adjustment groove. One end of the directional tube is rotatably disposed in the adjustment groove via a rotating shaft, and the other end of the directional tube is installed on the other end of the support plate via an adjustment mechanism.

[0009] In one example, the adjustment mechanism includes an adjustment plate, an adjustment column, and an adjustment nut. The adjustment plate is disposed on both sides of the support plate, and the adjustment plate has an arc-shaped groove. The adjustment column is installed in the arc-shaped groove, and the inner end of the adjustment column is connected to the side of the directional tube. The adjustment nut is installed on the outer end of the adjustment column.

[0010] In one example, the lifting mechanism includes a base, a lifting column, a lifting slide, an external screw, and a lifting motor. The lifting column is mounted on the base and has a lifting groove. The external screw is rotatably mounted in the lifting groove, and the top of the external screw passes through the lifting column and is connected to the lifting motor. The end of the arch rod is connected to the lifting slide.

[0011] In one example, the base is equipped with wheels at the front and rear.

[0012] In one example, a crossbeam is provided between the bases of the two lifting mechanisms.

[0013] The beneficial effects of this utility model are as follows: By setting the arch frame unit and the positioning unit, the design of the advanced small guide positioning arch frame is realized, which is height adjustable, flexible in movement, accurate in angle and easy to operate. It effectively solves the problems of cumbersome installation and fixed angle of the positioning device in the prior art, and significantly improves the efficiency, accuracy and safety of tunnel advanced small guide construction. Attached Figure Description

[0014] Figure 1 A schematic diagram of a guide arch for positioning small guide pipes in tunnels;

[0015] Figure 2 This is a schematic diagram of an arch frame unit;

[0016] Figure 3 This is a schematic diagram of the lifting motor and the external lead screw;

[0017] Figure 4 This is a schematic diagram of the positioning unit from one perspective;

[0018] Figure 5This is a schematic diagram of the positioning unit from another perspective;

[0019] Explanation of reference numerals in the attached figures:

[0020] Arch frame unit: 11 arch rod, 12 lifting mechanism, 121 base, 122 lifting support column, 123 lifting slide, 124 external screw, 125 lifting motor, 126 lifting slide, 127 traveling wheel, 128 crossbeam;

[0021] Positioning unit: 21 sliding seat, 22 directional tube, 23 fastening bolt, 24 support plate, 25 adjusting groove, 26 rotating shaft, 27 adjusting mechanism, 271 adjusting plate, 272 adjusting column, 273 adjusting nut. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] Please see Figures 1 to 5 This embodiment provides a tunnel pre-conductor positioning guide arch, which includes an arch unit and a positioning unit.

[0024] The arch frame unit includes an arch rod 11 and a lifting mechanism 12. The two ends of the arch rod 11 are respectively mounted on the lifting mechanism 12, and the height of the arch rod 11 can be adjusted by the lifting mechanism 12.

[0025] For ease of operation, the lifting mechanism 12 includes a base 121, a lifting support column 122, a lifting slide 123, an external lead screw 124, and a lifting motor 125. The lifting support column 122 is mounted on the base 121, and a lifting slide groove 126 is provided on the lifting support column 122. The external lead screw 124 is rotatably mounted in the lifting slide groove 126, and the top of the external lead screw 124 passes through the lifting support column 122 and is connected to the lifting motor 125 located at the top of the lifting support column 122. The end of the arch rod 11 is connected to the lifting slide 123. The rotation of the external lead screw 124 is driven by the lifting motor 125, which in turn drives the lifting slide 123 to move up and down, thereby driving the arch rod 11 to move synchronously.

[0026] To facilitate operation, the base 121 is equipped with front and rear wheels 127, which can quickly adjust the overall position of the arch frame and move flexibly in accordance with the construction progress, thereby improving construction efficiency.

[0027] To ensure structural stability, a crossbeam 128 is provided between the bases 121 of the two lifting mechanisms 12, and the two lifting mechanisms 12 are fixedly connected together by the crossbeam 128.

[0028] The positioning unit includes sliding seats 21 and directional tubes 22. Multiple sliding seats 21 are slidably mounted on the arch rod 11. The directional tubes 22 are installed on the sliding seats 21 at a preset angle. The sliding seats 21 are equipped with locking devices for fixing them to the arch rod 11. The locking devices can be fastening bolts 23, which are installed at the bottom of the sliding seats 21. When it is necessary to move the position of the sliding seats 21, the fastening bolts 23 are loosened, then the sliding seats 21 are moved to the predetermined position, and then fixed with the fastening bolts 23. Multiple sliding seats 21 and directional tubes 22 are installed independently, and the number can be increased or decreased according to construction needs to achieve synchronous positioning of multiple guide tubes, significantly improving grouting efficiency.

[0029] For ease of operation, a support plate 24 is provided on the sliding seat 21. An adjustment groove 25 is provided at one end of the support plate 24. One end of the directional tube 22 is rotatably installed in the adjustment groove 25 through a rotating shaft 26. The other end of the directional tube 22 is installed at the other end of the support plate 24 through an adjustment mechanism 27, so that the tilt angle of the directional tube 22 can be adjusted as needed.

[0030] For easy adjustment, the adjustment mechanism 27 includes an adjustment plate 271, an adjustment column 272, and an adjustment nut 273. The two adjustment plates 271 are respectively installed on both sides of the support plate 24. An arc-shaped groove is provided on the adjustment plate 271. The adjustment column 272 is installed in the arc-shaped groove, and the inner end of the adjustment column 272 is connected to the side of the directional tube 22. The adjustment nut 273 is installed on the outer end of the adjustment column 272. After loosening the adjustment nut 273, the height of the directional tube 22 can be adjusted by moving the position of the adjustment column 272 in the arc-shaped groove. Finally, it is fixed by the adjustment nut 273.

[0031] The working principle of the aforementioned tunnel pre-guided guide arch with small guide pipe positioning is as follows:

[0032] First, the arch frame is moved to the front of the location to be advanced in construction. Then, through the cooperation of the external screw 124, lifting motor 125, and lifting slide 123 in the lifting mechanism 12, the arch rod 11 is adjusted to the predetermined height. Next, the sliding seat 21 is controlled to slide along the arch rod 11 and fixed with the locking device, which can quickly adjust the horizontal position of the directional pipe 22. The directional pipe 22 can be adjusted in pitch angle through the rotating shaft 26 and the adjusting mechanism 27 to meet the positioning requirements of different advanced small guide pipe angles, ensuring the accuracy of small guide pipe installation and improving the reinforcement effect. It can be seen that this utility model, through its height-adjustable, flexible, angle-precise, and easy-to-operate design, effectively solves the problems of cumbersome installation of positioning devices and fixed angles in the prior art, and significantly improves the efficiency, accuracy, and safety of tunnel advanced small guide pipe construction.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tunnel advance small duct positioning guide arch, characterized in that, The utility model relates to an arch support unit, positioning unit and arch support device. The arch support unit comprises an arch rod (11) and a lifting mechanism (12), both ends of the arch rod (11) are respectively arranged on the lifting mechanism (12); The positioning unit comprises a sliding seat (21) and a directional pipe (22), a plurality of sliding seats (21) are slidably arranged on the arch rod (11), the directional pipe (22) is arranged on the sliding seat (21) at a preset angle, and the sliding seat (21) is provided with a locking piece for fixing the sliding seat (21) on the arch rod (11).

2. The tunnel advance mini-catheter positioning guide archway according to claim 1, wherein, The sliding seat (21) is provided with a supporting plate (24), one end of the supporting plate (24) is provided with an adjusting groove (25), one end of the directional pipe (22) is rotatably arranged in the adjusting groove (25) through a rotating shaft (26), and the other end of the directional pipe (22) is arranged on the other end of the supporting plate (24) through an adjusting mechanism (27).

3. The tunnel advance mini-catheter positioning guide archway according to claim 2, wherein, The adjusting mechanism (27) comprises an adjusting plate (271), an adjusting column (272) and an adjusting nut (273), the adjusting plate (271) is arranged on both sides of the supporting plate (24), the adjusting plate (271) is provided with an arc-shaped groove, the adjusting column (272) is arranged in the arc-shaped groove, and the inner end of the adjusting column (272) is connected with the side of the directional pipe (22), and the adjusting nut (273) is arranged on the outer end of the adjusting column (272).

4. The tunnel advance mini-catheter positioning guide arch of claim 1, wherein, The lifting mechanism (12) comprises a base (121), a lifting support column (122), a lifting sliding seat (123), an outer screw rod (124) and a lifting motor (125), the lifting support column (122) is arranged on the base (121), the lifting support column (122) is provided with a lifting sliding groove (126), the outer screw rod (124) is rotatably arranged in the lifting sliding groove (126), the top of the outer screw rod (124) penetrates through the lifting support column (122) and is connected with the lifting motor (125), and the end of the arch rod (11) is connected with the lifting sliding seat (123).

5. The tunnel advance mini-catheter positioning guide arch of claim 4, wherein, The base (121) is provided with walking wheels (127) at front and rear positions.

6. The tunnel advance mini-catheter positioning guide arch of claim 1, wherein, The bases (121) of two lifting mechanisms (12) are provided with a cross beam (128).

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