Safety supporting frame for road tunnel construction

Abstract

The utility model discloses a road tunnel construction safety supporting frame which comprises two supporting columns, a double-layer cross beam is arranged on the outer walls of the adjacent sides of the tops of the two supporting columns, vertically-upward hydraulic push rods are distributed on the outer walls of the tops of the double-layer cross beam at equal intervals, and vertically-upward lifting rods are installed on output shafts of the hydraulic push rods. And a hinge block is fixedly arranged at the output end of the lifting rod. An output shaft of a hydraulic push rod drives a lifting rod to ascend, the lifting rod drives an arc-shaped supporting plate to ascend to be supported on the inner wall of a tunnel, the outer wall of the top of the arc-shaped supporting plate generates extrusion force, and the arc-shaped supporting plate is movably connected with a hinge block through a first positioning plate; the two ends of the bottom of the arc-shaped supporting plate are connected with the two sides of the bottom of the lifting rod through extension springs, the arc-shaped supporting plate is kept to be stably attached to the inner wall of the tunnel, the top face of the arc-shaped supporting plate is attached to the inner wall of the tunnel through a rubber pad, and the inner wall of the tunnel is evenly stressed.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a safety support frame for road tunnel construction. Background Art

[0002] In order to protect the safety of tunnel installation and construction, it is necessary to take components or other measures to support, strengthen, or cover the surrounding rock of the tunnel.

[0003] Existing tunnel safety construction usually involves spraying concrete on the inner wall of the tunnel and reinforcing the tunnel after the concrete solidifies. However, during the process of reinforcing the inner wall of the tunnel, the inner wall of the tunnel needs to be supported. For example, Publication No.: (CN208416584 U) A road tunnel construction safety support frame uses a jack to drive a support beam to support the inner wall of the tunnel. The support beam is not only an integral structure, but also the inclination angle of the support beam cannot be adjusted, which easily leads to poor fitting between the outer wall of the top of the support beam and the inner wall of the tunnel, resulting in uneven force on the inner wall of the tunnel, which is easy to cause damage to the inner wall of the tunnel. For this reason, we propose a road tunnel construction safety support frame. Utility Model Content

[0004] The utility model aims to provide a safety support frame for road tunnel construction to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A road tunnel construction safety support frame comprises two support columns, a double-layer cross beam is provided on the outer wall of one side adjacent to the top of the two support columns, the top outer wall of the double-layer cross beam is provided with an equidistantly distributed vertically upward hydraulic push rod, the output shaft of the hydraulic push rod is installed with a vertically upward lifting rod, the output end of the lifting rod is fixedly provided with a hinge block, an arc-shaped support plate is provided at the top end of the lifting rod, two first positioning plates are fixedly provided at the central position of the arc-shaped support plate, the outer wall of the first positioning plate and the outer wall of the hinge block are movably connected using a rotating shaft through an opening, first fixing plates are fixedly provided on both sides of the bottom of the lifting rod, second fixing plates are fixedly provided on both sides of the outer wall of the bottom of the arc-shaped support plate, the outer wall of the first fixing plate is provided with a first fixing hole, the outer wall of the second fixing plate is provided with a second fixing hole, and a tension spring is installed between the first fixing hole and the second fixing hole.

[0007] Preferably, a rubber pad is fixedly provided on the top outer wall of the arc-shaped support plate, and the rubber pad is helpful to improve the fitting effect between the arc-shaped support plate and the inner wall of the tunnel.

[0008] Preferably, a second positioning plate is fixedly provided on the bottom outer wall of the hydraulic push rod, and first positioning holes are equally distributed on the four corner outer walls of the second positioning plate, and second positioning holes are equally distributed on the top outer wall of the double-layer beam, and the inner walls of the first positioning hole and the second positioning hole are provided with matching bolts to facilitate fixing the hydraulic push rod to the top of the double-layer beam.

[0009] Preferably, four equally spaced mounting holes are provided on both sides of the bottom of the double-layer crossbeam, a support block is fixedly provided on the outer wall of one side adjacent to the tops of the two support columns, and four equally spaced mounting columns are fixedly provided on the top outer wall of the support block, and the outer wall contour of the mounting columns is matched with the inner wall contour of the mounting holes, so as to facilitate fixing the double-layer crossbeam between the two support columns.

[0010] Preferably, the inner wall of the double-layer cross beam is installed with equidistantly distributed inclined support plates, which are helpful to improve the supporting strength of the double-layer cross beam.

[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0012] The output shaft of the hydraulic push rod drives the lifting rod to rise, and the lifting rod drives the arc support plate to rise and support on the inner wall of the tunnel. The top outer wall of the arc support plate generates extrusion pressure, and the arc support plate is movably connected through the first positioning plate and the hinge block. The bottom two ends of the arc support plate and the bottom two sides of the lifting rod are connected through the tension spring to keep the arc support plate stably in contact with the inner wall of the tunnel. The top surface of the arc support plate is in contact with the inner wall of the tunnel through the rubber pad, and the inner wall of the tunnel is evenly stressed to avoid damage to the inner wall of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a road tunnel construction safety support frame of the utility model;

[0015] Figure 2 This is a schematic diagram of the hydraulic push rod structure of a road tunnel construction safety support frame of the utility model;

[0016] Figure 3 This is a schematic diagram of a double-layer crossbeam structure of a road tunnel construction safety support frame of the utility model;

[0017] Figure 4The utility model is a schematic diagram of the support column structure of a road tunnel construction safety support frame.

[0018] Description of reference numerals:

[0019] 1 support column, 2 double-layer cross beam, 3 hydraulic push rod, 4 lifting rod, 5 hinge block, 6 arc support plate, 7 first positioning plate, 8 first fixing plate, 9 first fixing hole, 10 second fixing plate, 11 second fixing hole, 12 tension spring, 13 rubber pad, 14 second positioning plate, 15 first positioning hole, 16 second positioning hole, 17 support plate, 18 mounting hole, 19 support block, 20 mounting column. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Embodiment 1

[0022] Refer to the instruction manual Figure 1-4 A road tunnel construction safety support frame comprises two support columns 1, a double-layer beam 2 is arranged on the outer wall of one side adjacent to the top of the two support columns 1, a hydraulic push rod 3 is arranged on the outer wall of the top of the double-layer beam 2 and is distributed vertically upward at an equal distance, a vertically upward lifting rod 4 is installed on the output shaft of the hydraulic push rod 3, a hinge block 5 is fixedly arranged on the output end of the lifting rod 4, an arc-shaped support plate 6 is arranged on the top end of the lifting rod 4, two first positioning plates 7 are fixedly arranged at the central position of the arc-shaped support plate 6, the outer wall of the first positioning plate 7 and the outer wall of the hinge block 5 are movably connected by a rotating shaft through an opening, a first fixing plate 8 is fixedly arranged on both sides of the bottom of the lifting rod 4, a second fixing plate 10 is fixedly arranged on the outer wall of both sides of the bottom of the arc-shaped support plate 6, a first fixing hole 9 is opened on the outer wall of the first fixing plate 8, a second fixing hole 11 is opened on the outer wall of the second fixing plate 10, and a tension spring 12 is installed between the first fixing hole 9 and the second fixing hole 11.

[0023] Embodiment 2

[0024] Based on the first embodiment, Figure 3 As shown, a rubber pad 13 is fixedly provided on the top outer wall of the arc-shaped support plate 6, which is helpful to improve the fitting effect between the arc-shaped support plate 6 and the inner wall of the tunnel. The inner wall of the double-layer crossbeam 2 is installed with equidistantly distributed inclined support plates 17, which is helpful to improve the supporting strength of the double-layer crossbeam 2.

[0025] Embodiment 3

[0026] Based on the first or second embodiment, Figure 2As shown, a second positioning plate 14 is fixedly provided on the bottom outer wall of the hydraulic push rod 3, and first positioning holes 15 are equidistantly distributed on the four corner outer walls of the second positioning plate 14, and second positioning holes 16 are equidistantly distributed on the top outer wall of the double-layer cross beam 2. The inner walls of the first positioning holes 15 and the second positioning holes 16 are provided with matching bolts, so as to facilitate fixing the hydraulic push rod 3 to the top of the double-layer cross beam 2; Figure 3 As shown, four equally spaced mounting holes 18 are provided on both sides of the bottom of the double-layer crossbeam 2; Figure 4 As shown, a support block 19 is fixedly provided on the outer wall of one side adjacent to the top of the two support columns 1, and four equally spaced mounting columns 20 are fixedly provided on the top outer wall of the support block 19. The outer wall contour of the mounting columns 20 is matched with the inner wall contour of the mounting holes 18, so as to facilitate fixing the double-layer beam 2 between the two support columns 1.

[0027] Working principle of this utility model:

[0028] Refer to the instruction manual Figure 1-4 When the utility model is used, firstly, the two support columns 1 are installed on both sides of the bottom of the tunnel, the hydraulic push rod 3 is installed on the top of the double-layer beam 2, the mounting column 20 fixedly provided on the top outer wall of the support block 19 is inserted into the mounting hole 18 opened on the bottom outer wall of the double-layer beam 2, and the hydraulic push rod 3 is selected to pass through the inner walls of the first positioning hole 15 and the second positioning hole 16 through the second positioning plate 14 with bolts, at this time, the lifting rod 4 is driven to rise by the output shaft of the hydraulic push rod 3, and the lifting rod 4 drives the arc-shaped support plate 6 to rise and support on the inner wall of the tunnel, and the top outer wall of the arc-shaped support plate 6 generates an extrusion force, and the arc-shaped support plate 6 is movably connected with the first positioning plate 7 and the hinge block 5, and the bottom two ends of the arc-shaped support plate 6 are connected with the bottom two sides of the lifting rod 4 by the tension spring 12, so as to keep the arc-shaped support plate 6 in stable contact with the inner wall of the tunnel, and cooperate with the tension spring 12 to stretch, and the top surface of the arc-shaped support plate 6 is in contact with the inner wall of the tunnel through the rubber pad 13, and the inner wall of the tunnel is evenly stressed to avoid damage to the inner wall of the tunnel.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A road tunnel construction safety support frame, comprising two support columns (1), characterized in that: A double-layer crossbeam (2) is provided on the outer wall of one side adjacent to the top of the two support columns (1); a hydraulic push rod (3) is provided on the outer wall of the top of the double-layer crossbeam (2) at equal intervals and vertically upward; an output shaft of the hydraulic push rod (3) is mounted with a lifting rod (4) vertically upward; a hinge block (5) is fixedly provided at the output end of the lifting rod (4); an arc-shaped support plate (6) is provided at one end of the top of the lifting rod (4); two first positioning plates (7) are fixedly provided at the central position of the arc-shaped support plate (6); the outer wall of the first positioning plate (7) and the outer wall of the hinge block (5) are movably connected via a rotating shaft through an opening; first fixing plates (8) are fixedly provided on both sides of the bottom of the lifting rod (4); second fixing plates (10) are fixedly provided on both sides of the outer wall of the bottom of the arc-shaped support plate (6); a first fixing hole (9) is provided on the outer wall of the first fixing plate (8); a second fixing hole (11) is provided on the outer wall of the second fixing plate (10); a tension spring (12) is installed between the first fixing hole (9) and the second fixing hole (11).

2. A road tunnel construction safety support frame according to claim 1, characterized in that: A rubber pad (13) is fixedly provided on the top outer wall of the arc-shaped support plate (6).

3. A road tunnel construction safety support frame according to claim 1, characterized in that: A second positioning plate (14) is fixedly provided on the bottom outer wall of the hydraulic push rod (3), and first positioning holes (15) are equidistantly distributed on the four corner outer walls of the second positioning plate (14). Second positioning holes (16) are equidistantly distributed on the top outer wall of the double-layer crossbeam (2), and the inner walls of the first positioning holes (15) and the second positioning holes (16) are provided with matching bolts.

4. A road tunnel construction safety support frame according to claim 1, characterized in that: Four equally spaced mounting holes (18) are provided on both sides of the bottom of the double-layer crossbeam (2); a support block (19) is fixedly provided on the outer wall of one side adjacent to the top of the two support columns (1); four equally spaced mounting columns (20) are fixedly provided on the outer wall of the top of the support block (19); the outer wall profile of the mounting columns (20) matches the inner wall profile of the mounting holes (18).

5. A road tunnel construction safety support frame according to claim 1, characterized in that: The inner wall of the double-layer cross beam (2) is provided with equidistantly distributed and inclined support plates (17).

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