Subway civil engineering shield construction protection structure

Abstract

The utility model belongs to the technical field of civil engineering shield construction, and particularly relates to a subway civil engineering shield construction protection structure which comprises an arc-shaped protection plate and further comprises a plurality of arc-shaped supporting beams, the arc-shaped supporting beams are distributed in the horizontal direction at equal intervals, and the arc-shaped protection plate is detachably fixed to the tops of the arc-shaped supporting beams. The supporting column is connected to the bottom end of the arc-shaped supporting beam through a buffering mechanism, the buffering mechanism comprises an upper connecting flange, a lower connecting flange, a long bolt, a second locking nut and a buffering spring, and the upper connecting flange is fixed to the bottom end of the arc-shaped supporting beam; according to the utility model, the arranged buffering mechanism has buffering and anti-seismic effects, falling rocks or soil blocks are prevented from smashing the arc-shaped protection plates, the service life of the arc-shaped protection plates is prolonged, the protection effect is improved, the arc-shaped protection plates are detachably connected with the arc-shaped supporting beams, the supporting columns are also detachable, field assembly is facilitated, damaged parts are also convenient to disassemble and replace, and the service life of the arc-shaped protection plates is prolonged. The maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering shield construction, and in particular relates to a protective structure for civil engineering shield construction of a subway. Background Art

[0002] The shield construction method is that the tunnel boring machine builds (lays) the tunnel "shield" (referring to the supporting pipe segments) while excavating the tunnel. It is different from the open construction method. The basic working principle of the shield machine is that a cylindrical steel component advances forward along the axis of the tunnel while excavating the soil. The shell of the cylindrical component is the shield, which plays a temporary support role for the excavated tunnel section that has not yet been lined, and bears the pressure of the surrounding soil.

[0003] During the actual construction process, in order to prevent falling rocks or soil from causing damage to construction workers or mechanical equipment, protective structures are usually built to provide support and protection.

[0004] There are many types of protective devices for civil engineering shield construction on the market. For example, in the prior art, the Chinese utility model patent with authorization announcement number CN221568479U discloses "a protective device for subway civil engineering shield construction", which includes a left guard plate, the top of which is fixedly mounted with an upper mounting block, the interior of the upper mounting block is rotatably connected to a support rod, the surface of the support rod is rotatably connected to an upper limit block at the rear end of the upper mounting block, the top of the upper limit block is fixedly connected to the upper guard plate, and the side end of the support rod is rotatably connected to a rotating plate at the rear side of the upper limit block.

[0005] Although the protective devices in the prior art, including those mentioned above, are adjustable, they lack the necessary buffer structure in actual use. When falling rocks or soil blocks hit the upper guard plate, it is easy to cause the upper guard plate to deform or even be damaged, affecting the protective effect.

[0006] In order to solve the above problems, the utility model proposes a subway civil engineering shield construction protection structure. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a subway civil engineering shield construction protection structure, which has the characteristics of easy use, high safety performance and good protection effect.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a subway civil engineering shield construction protection structure, including an arc-shaped guard plate, and further comprising:

[0009] A plurality of arc-shaped support beams are evenly spaced in the horizontal direction, and the arc-shaped guard plate is detachably fixed to the top of the arc-shaped support beam;

[0010] A support column, wherein the support column is connected to the bottom end of the arc-shaped support beam by means of a buffer mechanism, and the buffer mechanism includes an upper connecting flange, a lower connecting flange, a long bolt, a No. 2 locking nut and a buffer spring. The upper connecting flange is fixed to the bottom end of the arc-shaped support beam, and the lower connecting flange is fixed to the top end of the support column. The long bolt passes through the upper connecting flange and the lower connecting flange. The No. 2 locking nut is installed on the protruding end of the long bolt by threaded engagement. The buffer spring is sleeved on the long bolt and is located between the upper connecting flange and the lower connecting flange.

[0011] As a preferred technical solution of the present invention, the support column and the arc-shaped support beam are connected by four long bolts and No. 2 locking nuts that are evenly spaced along the circumferential direction.

[0012] As a preferred technical solution of the present invention, it further includes a fixing mechanism, wherein the arc-shaped guard plate is detachably fixed to the top of the arc-shaped support beam by the fixing mechanism, and the fixing mechanism includes:

[0013] Limiting plate;

[0014] a threaded rod, the threaded rod being fixed to the limiting plate and passing through the arc-shaped guard plate and the arc-shaped support beam;

[0015] A No. 1 locking nut is installed on the protruding end of the threaded rod by screwing.

[0016] As a preferred technical solution of the present invention, the arc-shaped guard plate is detachably fixed to the top of the arc-shaped support beam by using multiple groups of fixing mechanisms distributed at equal intervals along the circumferential direction.

[0017] As a preferred technical solution of the present invention, the support column includes:

[0018] inner legs;

[0019] An outer leg, wherein a connecting cavity is machined in the outer leg, and the inner leg is partially embedded in the outer leg to form a telescopic structure;

[0020] An adjusting bolt is installed on the outer leg by screwing.

[0021] As a preferred technical solution of the present invention, the outer wall of the inner leg abuts against the inner wall of the connecting cavity.

[0022] As a preferred technical solution of the present invention, a plurality of limiting grooves are processed on the outer wall of the inner leg and are distributed at equal intervals along the length direction thereof, and the adjusting bolts are embedded in the limiting grooves.

[0023] As a preferred technical solution of the utility model, it also includes:

[0024] A fixing foot is welded and fixed to the bottom end of the support column, and has a hole on the fixing foot for fixing the support column to the tunnel ground.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] In the utility model, the buffer mechanism is provided with a buffering and anti-seismic effect, which prevents the arc-shaped guard plate from being damaged by falling rocks or soil blocks, thereby increasing the service life of the arc-shaped guard plate and improving the protective effect. The arc-shaped guard plate is detachably connected to the arc-shaped support beam, and the support column is also detachable, which is convenient for on-site assembly and also convenient for disassembly and replacement of damaged parts, thereby reducing maintenance costs.

[0027] Other additional advantages and beneficial effects of the present invention will be partially given in the following description, and partially become obvious from the following description, or be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a structural diagram of the utility model;

[0030] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the fixing mechanism;

[0031] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure of the buffer mechanism;

[0032] Figure 4 For this utility model Figure 1 A in the figure is an enlarged structural diagram.

[0033] In the figure: 1. Arc-shaped guard plate; 2. Arc-shaped support beam; 3. Fixing mechanism; 31. Limiting plate; 32. Threaded rod; 33. Locking nut No. 1; 4. Support column; 41. Inner support leg; 411. Limiting groove; 42. Outer support leg; 421. Connecting cavity; 43. Adjusting bolt; 5. Buffering mechanism; 51. Upper connecting flange; 52. Lower connecting flange; 53. Long bolt; 54. Locking nut No. 2; 55. Buffering spring; 6. Fixing foot. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 4 The utility model provides the following technical solutions: a subway civil engineering shield construction protection structure, including an arc-shaped guard plate 1, and also includes: an arc-shaped support beam 2 and a support column 4.

[0036] Further, by Figure 1 and Figure 3 As shown, in this embodiment, multiple arc-shaped support beams 2 are distributed at equal intervals in the horizontal direction, the arc-shaped guard plate 1 is detachably fixed to the top of the arc-shaped support beam 2, the support column 4 is connected to the bottom end of the arc-shaped support beam 2 by means of a buffer mechanism 5, and the buffer mechanism 5 includes an upper connecting flange 51, a lower connecting flange 52, a long bolt 53, a No. 2 locking nut 54 and a buffer spring 55. The upper connecting flange 51 is fixed to the bottom end of the arc-shaped support beam 2, and the lower connecting flange 52 is fixed to the top of the support column 4. The long bolt 53 passes through the upper connecting flange 51 and the lower connecting flange 52, and the No. 2 locking nut 54 is installed on the protruding end of the long bolt 53 by threaded engagement. The buffer spring 55 is sleeved on the long bolt 53 and is located between the upper connecting flange 51 and the lower connecting flange 52. After adopting the above scheme, when in use, the various accessories of the protective structure are operated After being transported to the construction site, it is assembled on site. First, multiple equally spaced arc support beams 2 are connected to the arc guard plate 1. Then, the support column 4 is connected to the arc support beam 2 using the buffer mechanism 5. Finally, the protective structure is erected, the support column 4 is in a vertical state, and the bottom end of the support column 4 is fixed to the tunnel ground. Through the provided buffer mechanism 5, when falling rocks or soil blocks hit the arc guard plate 1, the presence of the arc support beam 2 can prevent the arc guard plate 1 from being deformed or damaged. At the same time, the arc guard plate 1 will produce longitudinal displacement, which is buffered by the buffer spring 55, thereby increasing the service life of the arc guard plate 1 and improving the protective effect. In addition, the arc guard plate 1 and the arc support beam 2 are detachably connected, and the support column 4 is also detachable, which is convenient for transportation and on-site assembly, and also convenient for disassembly and replacement of damaged parts, thereby reducing maintenance costs.

[0037] Preferably, by Figure 1 and Figure 3As shown, in this embodiment, the support column 4 and the arc-shaped support beam 2 are connected by four long bolts 53 and No. 2 locking nuts 54 that are evenly spaced along the circumferential direction. After adopting the above scheme, when in use, the stability of the connection between the support column 4 and the arc-shaped support beam 2 can be ensured, and a good protective effect can be ensured. The support column 4 can be disassembled by unscrewing the No. 2 locking nut 54, so that the support column 4 and the arc-shaped support beam 2 are separated.

[0038] Optionally, by Figure 1 and Figure 3 As shown, in this embodiment, it also includes a fixing mechanism 3, and the arc guard plate 1 is detachably fixed to the top of the arc support beam 2 by the fixing mechanism 3, and the fixing mechanism 3 includes: a limit plate 31, a threaded rod 32 and a No. 1 locking nut 33, the threaded rod 32 is fixed on the limit plate 31, and the threaded rod 32 passes through the arc guard plate 1 and the arc support beam 2, and the No. 1 locking nut 33 is installed on the protruding end of the threaded rod 32 by threading. After adopting the above scheme, when in use, when installing the arc guard plate 1, first place the arc guard plate 1 on the top of the arc support beam 2, and then make the threaded rod 32 pass through the arc guard plate 1 and the arc support beam 2, and limit it by the limiting plate 31. Tighten the No. 1 locking nut 33 on the protruding end of the threaded rod 32 to achieve a stable connection between the arc guard plate 1 and the arc support beam 2. Unscrew the No. 1 locking nut 33 to remove the arc guard plate 1 and separate the arc guard plate 1 from the arc support beam 2.

[0039] Preferably, by Figure 1 As shown, in this embodiment, the arc-shaped guard plate 1 is detachably fixed to the top of the arc-shaped support beam 2 by using multiple groups of fixing mechanisms 3 distributed at equal intervals along the circumferential direction, thereby ensuring the stability of the installation of the arc-shaped guard plate 1.

[0040] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, the support column 4 includes: an inner leg 41, an outer leg 42 and an adjusting bolt 43. A connecting cavity 421 is processed in the outer leg 42, and the inner leg 41 is partially embedded in the outer leg 42 to form a telescopic structure. The adjusting bolt 43 is installed on the outer leg 42 by screwing. After adopting the above scheme, when in use, the inner leg 41 and the outer leg 42 are connected to form a telescopic structure, which is convenient for adjusting the height of the arc guard plate 1. When adjusting the height of the arc guard plate 1, first loosen the adjusting bolt 43, then move the position of the inner leg 41, adjust to the appropriate height, and then tighten the adjusting bolt 43 to lock it to ensure stability after adjustment.

[0041] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, the outer wall of the inner leg 41 abuts against the inner wall of the connecting cavity 421 . The above design can further improve the stability of the connection between the inner leg 41 and the outer leg 42 .

[0042] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, a plurality of limit grooves 411 are processed on the outer wall of the inner leg 41 and are evenly spaced along its length direction, and the adjusting bolt 43 is embedded in the limit groove 411. After adopting the above design, when the adjusting bolt 43 is tightened, the adjusting bolt 43 is embedded in the limit groove 411, which has high stability, further improving the stability of the connection between the inner leg 41 and the outer leg 42, and avoiding accidental slippage.

[0043] Preferably, by Figure 1 As shown, in this embodiment, it also includes: a fixing foot 6, which is welded and fixed to the bottom end of the support column 4, and has a hole on the fixing foot 6 for fixing the support column 4 to the tunnel ground. After adopting the above scheme, when in use, bolts or rivets can be used to pass through the holes on the fixing foot 6 to fix the support column 4 to the tunnel ground.

[0044] Components not described in detail herein are prior art.

[0045] Working principle and use process of the utility model: When the protective structure of the utility model is used, the various components of the protective structure are transported to the construction site and assembled on site. First, a plurality of equally spaced arc-shaped support beams 2 are connected to the arc-shaped guard plate 1 by using the fixing mechanism 3. Then, the support column 4 is connected to the arc-shaped support beam 2 by using the buffer mechanism 5. Finally, the protective structure is erected so that the support column 4 is in a vertical state, and the bottom end of the support column 4 is fixed to the tunnel ground.

[0046] The buffer mechanism 5 is provided so that when falling rocks or soil blocks hit the curved guard plate 1, the presence of the curved support beam 2 can prevent the curved guard plate 1 from being deformed or damaged. At the same time, the curved guard plate 1 will produce longitudinal displacement, which is buffered by the buffer spring 55, thereby extending the service life of the curved guard plate 1 and improving the protective effect.

[0047] In addition, the curved guard plate 1 and the curved support beam 2 are detachably connected, and the support column 4 is also detachable, which facilitates on-site assembly and the removal and replacement of damaged parts, thereby reducing maintenance costs.

[0048] For the protective structure of the present invention, the inner leg 41 and the outer leg 42 are connected as a retractable structure, which is convenient for adjusting the height of the arc-shaped guard plate 1. When adjusting the height of the arc-shaped guard plate 1, first loosen the adjustment bolt 43, then move the position of the inner leg 41, and after adjusting to the appropriate height, tighten the adjustment bolt 43 to lock it, so that the adjustment bolt 43 is embedded in the limit slot 411 at different positions for locking, ensuring stability after adjustment.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A subway civil engineering shield construction protection structure, comprising an arc-shaped guard plate (1), characterized in that: Also includes: A curved support beam (2), wherein a plurality of the curved support beams (2) are evenly spaced in a horizontal direction, and the curved guard plate (1) is detachably fixed to the top of the curved support beam (2); A support column (4), wherein the support column (4) is connected to the bottom end of the arc-shaped support beam (2) by means of a buffer mechanism (5), and the buffer mechanism (5) comprises an upper connecting flange (51), a lower connecting flange (52), a long bolt (53), a second locking nut (54) and a buffer spring (55), wherein the upper connecting flange (51) is fixed to the bottom end of the arc-shaped support beam (2), and the lower connecting flange (52) is fixed to the top end of the support column (4), the long bolt (53) passes through the upper connecting flange (51) and the lower connecting flange (52), the second locking nut (54) is installed on the protruding end of the long bolt (53) by screwing, and the buffer spring (55) is sleeved on the long bolt (53) and is located between the upper connecting flange (51) and the lower connecting flange (52).

2. A subway civil engineering shield construction protection structure according to claim 1, characterized in that: The support column (4) and the arc-shaped support beam (2) are connected by four long bolts (53) and No. 2 locking nuts (54) that are evenly spaced along the circumferential direction.

3. The subway civil engineering shield construction protection structure according to claim 1, characterized in that: It also includes a fixing mechanism (3), wherein the arc-shaped guard plate (1) is detachably fixed to the top of the arc-shaped support beam (2) by means of the fixing mechanism (3), and the fixing mechanism (3) includes: Limiting plate (31); A threaded rod (32), wherein the threaded rod (32) is fixed on the limiting plate (31), and the threaded rod (32) passes through the arc-shaped guard plate (1) and the arc-shaped support beam (2); A No. 1 locking nut (33) is installed on the protruding end of the threaded rod (32) by screwing.

4. A subway civil engineering shield construction protection structure according to claim 3, characterized in that: The arc-shaped guard plate (1) is detachably fixed to the top of the arc-shaped support beam (2) by using a plurality of fixing mechanisms (3) distributed at equal intervals along the circumferential direction.

5. The subway civil engineering shield construction protection structure according to claim 1, characterized in that: The support column (4) comprises: inner leg (41); An outer leg (42), wherein a connecting cavity (421) is processed in the outer leg (42), and the inner leg (41) is partially embedded in the outer leg (42) to form a telescopic structure; An adjusting bolt (43) is mounted on the outer leg (42) by screwing.

6. A subway civil engineering shield construction protection structure according to claim 5, characterized in that: The outer wall of the inner leg (41) abuts against the inner wall of the connecting cavity (421).

7. The subway civil engineering shield construction protection structure according to claim 5, characterized in that: A plurality of limiting grooves (411) are processed on the outer wall of the inner leg (41) and are distributed at equal intervals along the length direction thereof, and the adjusting bolts (43) are embedded in the limiting grooves (411).

8. The subway civil engineering shield construction protection structure according to claim 1, characterized in that: Also includes: A fixing foot (6) is welded and fixed to the bottom end of the support column (4), and a hole is provided on the fixing foot (6) for fixing the support column (4) to the tunnel ground.

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