A tunnel support

Abstract

The utility model discloses an arch frame for tunnel support, including arch board, arch board includes roof and the arc side plate of setting of roof both sides, and the support chassis is set up in the both sides of arch board, and the support chassis includes base, inclined strut and moving wheel, and the inclined strut sets up the upper surface of base, and the inclined strut includes inclined strut a and inclined strut b, and moving wheel sets up the bottom four corners of base, and the auxiliary part sets up below roof, and the auxiliary part includes crossbeam, support column and spring shock absorber, and crossbeam sets up between two support chassis, and support column sets up between spring shock absorber and crossbeam. The utility model discloses through the auxiliary support of support chassis and crossbeam and support column, provides stronger stability and carrying capacity, ensures the stability of arch frame in the tunnel, and the height of support part is adjustable, can adapt to the tunnel construction demand of different height, has extensive applicability.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of tunnel support technology, and more specifically, to an arch frame for tunnel support. Background Technology

[0002] Tunnel support arches are an important structural form used in tunnel engineering to support the tunnel roof and prevent the surrounding rock from collapsing. As a key component of the tunnel support structure system, arch support typically includes initial support and secondary lining. Its main function is to provide rapid support after tunnel excavation, ensure construction safety, and control the deformation of the surrounding rock.

[0003] Arch-frame structures are the most commonly used initial support method in tunnel support, mainly divided into two forms: steel frame and lattice steel frame. Compared with traditional anchoring systems, arch-frame support has the advantages of prefabrication, high rigidity, good scalability, and short construction time. It can quickly provide support after the tunnel face is excavated and effectively control the deformation of the surrounding rock.

[0004] Traditional tunnel support structures often have a fixed support height, making it difficult to adapt to the needs of tunnel construction at different heights. Furthermore, during tunnel construction, the arch frame may be affected by impacts and vibrations from blasting operations and mechanical vibrations, and traditional support structures typically lack effective vibration damping measures, easily leading to damage to the arch frame and the support structure itself. Therefore, an arch frame for tunnel support is designed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an arch frame for tunnel support.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses an arch frame for tunnel support, including an arch plate, wherein the arch plate includes a top plate and arc-shaped side plates arranged on both sides of the top plate; A support base is provided on both sides of the arch plate. The support base includes a base, diagonal braces, and moving wheels. The diagonal braces are provided on the upper surface of the base and include diagonal brace a and diagonal brace b. The moving wheels are provided at the four bottom corners of the base. An auxiliary component is disposed below the top plate. The auxiliary component includes a crossbeam, a support column, and a spring shock absorber. The crossbeam is disposed between the two support base frames, and the support column is disposed between the spring shock absorber and the crossbeam.

[0007] As a preferred technical solution of this utility model, both the diagonal brace a and the diagonal brace b are "T" shaped. The diagonal brace a has a telescopic rod inside. The upper end of the telescopic rod is screwed to the arc-shaped side plate. The telescopic rod is slidably connected to the diagonal brace a. A tightening member is provided between the telescopic rod and the diagonal brace.

[0008] In a preferred embodiment of this utility model, the diagonal brace b is disposed on the inner side of the diagonal brace a, a connecting plate is fixed on the inner side of the diagonal brace a, a connecting frame is sleeved on the outer side of the diagonal brace b, and a connecting arm is screwed between the connecting plate and the connecting frame.

[0009] In a preferred embodiment of this utility model, the connecting frame is slidably connected to the diagonal brace b, and a tightening member is provided between the connecting frame and the diagonal brace b. The tightening member passes through the outer side of the connecting frame and is threadedly engaged with the diagonal brace b.

[0010] As a preferred embodiment of this utility model, the two ends of the crossbeam are respectively connected to the two base screws, and the upper surface of the crossbeam is provided with at least two auxiliary components. The support column includes a fixed column and an adjusting column. The fixed column is sleeved on the outside of the adjusting column, and the bottom of the fixed column is connected to the crossbeam screw.

[0011] As a preferred embodiment of the present invention, the spring shock absorber includes a piston rod, a sleeve, and a spring. The sleeve is sleeved on the outside of the piston rod, and the spring surrounds the outside of the piston rod and the sleeve. The upper end of the spring is fixedly connected to the piston rod, and a damping pad is fixed to the lower end of the spring.

[0012] As a preferred technical solution of this utility model, the damping pad is annular, the outer surface of the sleeve is threaded, the damping pad is threaded with the sleeve, a limit screw passes through the adjusting column and the fixing column, and a number of limit holes adapted to the limit screw are opened on the outer side of the adjusting column.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides enhanced stability and load-bearing capacity through the auxiliary support of the supporting base frame, crossbeams, and support columns, ensuring the stability of the arch frame within the tunnel. Furthermore, the height of the support section is adjustable, adapting to the needs of tunnel construction at different heights and possessing wide applicability. The spring shock absorbers effectively buffer and dampen vibrations, protecting the arch frame and support structure from damage caused by vibration and impact, extending their service life, and reducing safety risks caused by instability in the support structure during construction. This invention solves the problems of non-adjustable support structure height and lack of effective vibration damping measures in existing technologies.

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the diagonal brace of this utility model; Figure 3 This is a schematic diagram of the planar structure of this utility model; In the diagram: 10. Arched plate; 101. Top plate; 102. Curved side plate; 20. Support base; 201. Base; 202. Diagonal brace a; 203. Telescopic rod; 204. Diagonal brace b; 205. Tightening component; 206. Connecting plate; 207. Connecting frame; 208. Connecting arm; 209. Casters; 30. Auxiliary components; 301. Crossbeam; 302. Fixing column; 303. Adjusting column; 304. Spring shock absorber; 3041. Piston rod; 3042. Sleeve; 3043. Spring; 3044. Damping pad; 305. Limit screw; 306. Limit hole; Detailed Implementation

[0017] like Figure 1-3 As shown, this utility model provides an arch frame for tunnel support, including an arch plate 10, the arch plate 10 including a top plate 101 and arc-shaped side plates 102 arranged on both sides of the top plate 101; Support base 20 is provided on both sides of arch plate 10. Support base 20 includes base 201, diagonal bracing rods and moving wheels 209. Diagonal bracing rods are provided on the upper surface of base 201. Diagonal bracing rods include diagonal bracing rod a202 and diagonal bracing rod b204. Moving wheels 209 are provided at the four bottom corners of base 201. The auxiliary component 30 is located below the top plate 101. The auxiliary component 30 includes a crossbeam 301, a support column, and a spring shock absorber 304. The crossbeam 301 is located between two support base frames 20, and the support column is located between the spring shock absorber 304 and the crossbeam 301.

[0018] Furthermore, in this embodiment, both the diagonal brace a202 and the diagonal brace b204 are "T" shaped. The diagonal brace is inverted on the support base 20. A telescopic rod 203 is provided inside the diagonal brace a202. The upper end of the telescopic rod 203 is screwed to the arc-shaped side plate 102. The telescopic rod 203 is slidably connected to the diagonal brace a202. A tightening member 205 is provided between the telescopic rod 203 and the diagonal brace. The support height is adjusted by moving the telescopic rod 203 inside the diagonal brace a202, and it is connected to the arc-shaped side plate 102 of the arch plate 10.

[0019] In this embodiment, the diagonal brace b204 is disposed on the inner side of the diagonal brace a202, and the diagonal brace b204 supports the diagonal brace a202, so that the diagonal brace a202, the support base 20 and the diagonal brace b204 form a "triangular" support structure to support the arch plate 10. A connecting plate 206 is fixed on the inner side of the diagonal brace a202. The upper end of the diagonal brace b204 is connected to the connecting plate 206 by screws. A connecting frame 207 is sleeved on the outer side of the diagonal brace b204. A connecting arm 208 is screwed between the connecting plate 206 and the connecting frame 207, and the connecting plate 206 and the connecting frame 207 are connected by the connecting arm 208.

[0020] In this embodiment, the connecting frame 207 is slidably connected to the diagonal brace b204, allowing the connecting frame 207 to adjust its position on the diagonal brace b204. A tightening member 205 is provided between the connecting frame 207 and the diagonal brace b204. The tightening member 205 passes through the outer side of the connecting frame 207 and is threadedly engaged with the diagonal brace b204. By screwing the tightening member 205 into the connecting frame 207 and threading it with the diagonal brace b204, the position of the connecting frame 207 on the diagonal brace b204 is fixed.

[0021] In this embodiment, the two ends of the crossbeam 301 are respectively screwed to two bases 201. The upper surface of the crossbeam 301 is provided with at least two auxiliary parts 30. The support column includes a fixed column 302 and an adjusting column 303. The fixed column 302 is sleeved on the outside of the adjusting column 303. The bottom of the fixed column 302 is screwed to the crossbeam 301.

[0022] In this embodiment, the spring damper 304 includes a piston rod 3041, a sleeve 3042, and a spring 3043. The sleeve 3042 is sleeved on the outside of the piston rod 3041, and the spring 3043 surrounds the outside of the piston rod 3041 and the sleeve 3042. The upper end of the spring 3043 is fixedly connected to the piston rod 3041, and the lower end of the spring 3043 is fixed with a damping pad 3044. The piston rod 3041 and the sleeve 3042 cooperate to perform piston movement, and the spring 3043 provides buffering and shock absorption. The piston rod 3041 is directly connected to the top plate 101 and directly receives the force from the top plate 101.

[0023] In this embodiment, the damping pad 3044 is a ring-shaped design, and the outer surface of the sleeve 3042 is threaded. The damping pad 3044 is threadedly engaged with the sleeve 3042. By adjusting the position of the damping pad 3044 outside the sleeve 3042, the spring 3043 is stretched or compressed to adjust the elastic force of the spring 3043 and adjust the damping force. A limit screw 305 passes through the adjusting column 303 and the fixed column 302. Several limit holes 306 that are adapted to the limit screw 305 are opened on the outer side of the adjusting column 303. By adjusting the adjusting column 303 to a suitable height, the limit screw 305 passes through the limit holes 306 through the fixed column 302 and the adjusting column 303, thus limiting the usable height of the support column, which facilitates the adjustment of the support height of the arch frame according to the tunnel height.

[0024] Specifically, when using the arch frame for initial tunnel support, the base 201 of the support frame 20 is moved to a predetermined position using the moving wheels 209 and fixed using the foot brakes on the moving wheels 209 to ensure that the base 201 is placed stably on the ground. If necessary, temporary ground anchors are used for fixation. The upper end of the diagonal brace a202 is connected to the arc-shaped side plate 102 of the arch frame. The arc-shaped side plate 102 of the arch frame is connected to the two diagonal braces a202 of the two lower support frames 20 using screws to ensure a firm connection. The diagonal braces a202, diagonal braces b204, and support frame 20 form a stable "triangular" support structure, which transfers the load on the arch frame to the ground and provides reliable support. A crossbeam 301 is installed between the two support frames 20, and a support column is installed on the crossbeam 301. The spring shock absorber 304 is installed on the support column, and the piston rod 3041 of the spring shock absorber 304 is directly connected to the top plate 101 of the arch frame. After installation, the heights of the adjusting column 303 and the telescopic rod 203 are adjusted simultaneously to adapt to the height of the tunnel, so that the top plate 101 abuts against the top of the tunnel. The position of the adjusting column 303 is fixed by the limiting screw 305. By using the sliding of the telescopic rod 203 in the diagonal brace a202 and the extension and retraction of the adjusting column 303 in the fixed column 302, together with the tightening part 205 and the limiting screw 305, the height of the support system can be flexibly adjusted to adapt to the tunnel construction needs of different heights. The spring damper 304, through the piston movement of the piston rod 3041 within the sleeve 3042, combined with the buffering effect of the spring 3043, can effectively absorb and dissipate the vibration and impact energy of the arch frame, reducing the impact of vibration on the arch frame and supporting structure. The design of the damping pad 3044 can further adjust the magnitude of the elastic force of the spring 3043 to adapt to different damping requirements.

[0025] The components of this utility model, such as the arch plate 10, supporting base frame 20, base 201, diagonal brace, telescopic rod 203, tightening component 205, connecting plate 206, connecting frame 207, connecting arm 208, moving wheel 209, crossbeam 301, fixed column 302, adjusting column 303, spring shock absorber 304, and limit screw 305, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0026] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An arch frame for tunnel support, characterized in that, It includes an arch plate (10), which includes a top plate (101) and arc-shaped side plates (102) provided on both sides of the top plate (101). A support base (20) is provided on both sides of the arch plate (10). The support base (20) includes a base (201), diagonal braces and moving wheels (209). The diagonal braces are provided on the upper surface of the base (201) and include diagonal brace a (202) and diagonal brace b (204). The moving wheels (209) are provided at the four bottom corners of the base (201). An auxiliary component (30) is disposed below the top plate (101). The auxiliary component (30) includes a crossbeam (301), a support column, and a spring damper (304). The crossbeam (301) is disposed between two of the support base frames (20), and the support column is disposed between the spring damper (304) and the crossbeam (301).

2. An arch frame for tunnel support according to claim 1, characterized in that, Both the diagonal brace a (202) and the diagonal brace b (204) are "T" shaped. The diagonal brace a (202) has a telescopic rod (203) inside. The upper end of the telescopic rod (203) is screwed to the arc-shaped side plate (102). The telescopic rod (203) is slidably connected to the diagonal brace a (202). A tightening member (205) is provided between the telescopic rod (203) and the diagonal brace.

3. An arch frame for tunnel support according to claim 2, characterized in that, The diagonal brace b (204) is located inside the diagonal brace a (202). A connecting plate (206) is fixed inside the diagonal brace a (202). A connecting frame (207) is sleeved on the outside of the diagonal brace b (204). A connecting arm (208) is screwed between the connecting plate (206) and the connecting frame (207).

4. An arch frame for tunnel support according to claim 3, characterized in that, The connecting frame (207) is slidably connected to the diagonal brace b (204). The tightening member (205) is provided between the connecting frame (207) and the diagonal brace b (204). The tightening member (205) passes through the outside of the connecting frame (207) and is threadedly engaged with the diagonal brace b (204).

5. An arch frame for tunnel support according to claim 4, characterized in that, The two ends of the crossbeam (301) are respectively screwed to the two bases (201). At least two auxiliary parts (30) are provided on the upper surface of the crossbeam (301). The support column includes a fixed column (302) and an adjusting column (303). The fixed column (302) is sleeved on the outside of the adjusting column (303). The bottom of the fixed column (302) is screwed to the crossbeam (301).

6. An arch frame for tunnel support according to claim 5, characterized in that, The spring damper (304) includes a piston rod (3041), a sleeve (3042) and a spring (3043). The sleeve (3042) is sleeved on the outside of the piston rod (3041). The spring (3043) surrounds the outside of the piston rod (3041) and the sleeve (3042). The upper end of the spring (3043) is fixedly connected to the piston rod (3041). The lower end of the spring (3043) is fixed with a damping pad (3044).

7. An arch frame for tunnel support according to claim 6, characterized in that, The damping pad (3044) is annular in design. The outer surface of the sleeve (3042) is threaded. The damping pad (3044) is threaded to the sleeve (3042). A limit screw (305) passes through between the adjusting column (303) and the fixing column (302). The outer side of the adjusting column (303) is provided with several limit holes (306) that are adapted to the limit screw (305).

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