Tunnel arch foot supporting pad protection structure

Abstract

The utility model belongs to the technical field of tunnel construction, and particularly relates to a tunnel arch foot supporting pad protection structure which comprises a protection plate, a protection groove is formed in the protection plate, the upper surface of the interior of the protection groove extends to the exterior of the protection plate, and a pressing plate is slidably connected to the interior of the protection groove through a limiting assembly. The bottom of the pressing plate is fixedly connected with a plurality of evenly-distributed insertion rods, a plurality of evenly-distributed through holes are formed in the lower surface of the interior of the protection groove, grooves are formed in the left side and the right side of the interior of the protection groove, through-type through grooves are formed in the upper surfaces of the interiors of the grooves, and stabilizing assemblies are arranged in the grooves. According to the protection structure, the supporting pad connecting plate is comprehensively protected through the protection plate, the supporting pad connecting plate and the protection plate can be stably connected through the stabilizing assemblies in the grooves, the protection effect of the protection plate is good, the supporting pad connecting plate cannot move when the protection structure is used, and therefore the use effect of the protection structure is good.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel arch foot support pad protection structure. Background Art

[0002] During tunnel construction, the steel arch frame for initial tunnel support is erected immediately following the tunnel face. When the surrounding rock mass is less stable, excavation is carried out in steps, resulting in the initial steel arch frame being erected in sections. Before the steel arch frame closes into a ring, the arch foot of the upper step must be supported and protected. Currently, during initial support construction, the arch foot supports are supported using connecting plates, which are susceptible to damage, necessitating the need for a tunnel arch foot support protection structure.

[0003] A patent application CN221002790U discloses a tunnel arch foot support pad protection mold, which includes a main frame, a top plate and a slide plate. The main frame is a semi-closed frame structure, the top plate is slidably engaged with the top of the main frame, and the slide plate is slidably connected to the side of the main frame. This utility model can protect the arch foot connecting plate to prevent the connecting plate from warping or deformation due to blasting or mechanical excavation, thereby ensuring that the upper and lower step steel arch frames are connected smoothly and the connecting plates are tightly fitted, greatly improving the initial support construction quality and construction safety factor.

[0004] However, the existing tunnel arch foot support pad protection structure is inconvenient to provide comprehensive protection around the arch foot connecting plate when in use, and may shift during use. At the same time, the disassembly operation is complicated when it is recycled, which makes it inconvenient to use, resulting in the protection structure being not effective enough and not practical enough. Therefore, a tunnel arch foot support pad protection structure is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems that the existing tunnel arch foot support pad protection structure is inconvenient to provide comprehensive protection around the arch foot connecting plate when in use, may shift during use, and the disassembly operation is complicated during recycling, which makes it inconvenient to use, resulting in the protection structure being not effective enough and not practical enough, the utility model proposes a tunnel arch foot support pad protection structure.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the tunnel arch foot support pad protection structure described in the utility model includes a protective plate;

[0007] A protective groove is provided inside the protective plate, the upper surface of the protective groove extends to the outside of the protective plate, a pressure plate is slidably connected to the inside of the protective groove through a limit assembly, a plurality of evenly distributed insertion rods are fixedly connected to the bottom of the pressure plate, and a plurality of evenly distributed through holes are provided on the lower surface of the protective groove;

[0008] Grooves are provided on both sides of the protective groove, a through-type through-groove is provided on the upper surface of the groove, a stabilizing component is provided inside the groove, and storage components are provided on both sides of the protective plate, and the storage component is installed with the stabilizing component.

[0009] Preferably, the limiting assembly includes limiting grooves opened on the left and right sides of the front and rear surfaces inside the protective groove, a fixing rod is fixedly connected inside the limiting groove, a sleeve block passes through the outer surface of the fixing rod, the sleeve block is slidably connected to the limiting groove, the sleeve block is fixedly connected to the pressure plate, a spring is fixedly connected between the sleeve block and the limiting groove, and the spring is sleeved on the outer surface of the fixing rod.

[0010] Preferably, the storage component includes a through hole opened on one side of the groove, a slide groove is opened on one side of the through hole, a magnetic block 1 is fixedly connected to one side of the slide groove, a storage rod passes through the through hole, one end of the storage rod is fixedly connected to a magnetic block 2, the other end of the storage rod extends into the groove, and the magnetic block 2 is magnetically connected to the magnetic block 1.

[0011] Preferably, the stabilizing component includes an L-shaped plate fixedly connected to the other end of the storage rod, a threaded rod is threadedly connected to the center of the L-shaped plate, the bottom end of the threaded rod is rotatably connected to the stabilizing plate, the bottom of the stabilizing plate is fixedly connected to a stabilizing pad, guide rods are passed through the front and rear of the L-shaped plate, the bottom end of the guide rod is fixedly connected to the top of the stabilizing plate, and the top end of the threaded rod and the top end of the guide rod both pass through the through groove.

[0012] Preferably, the insertion rod corresponds to the through hole, and the insertion rod is adapted to the through hole.

[0013] Preferably, the top end of the guide rod is fixedly connected to a limiting block.

[0014] Preferably, a handle is fixedly connected to the top end of the threaded rod.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model provides comprehensive protection for the support connecting plate through the protective plate, and the stabilizing component inside the groove can ensure a firm connection between the support connecting plate and the protective plate, thereby improving the protective effect of the protective plate and preventing the support connecting plate from shifting during use, thereby improving the use effect of the protective structure.

[0017] 2. The utility model inserts the support connection plate at the arch foot of the external arch into the protective groove of the protective plate, and squeezes the pressure plate after insertion so that the pressure plate slides through the limit of the limit assembly, and after the pressure plate slides, drives the insertion rod to move through the through hole and be inserted into the tunnel soil, so that the protective plate can be installed more firmly in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure in Example 1;

[0020] Figure 2 This is a bottom-up structural diagram of the first embodiment;

[0021] Figure 3 It is a schematic diagram of a partial front cross-section structure in Example 1;

[0022] Figure 4 For Example 1 Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5 For Example 1 Figure 3 Enlarged structural diagram at point B in the middle.

[0024] In the figure: 1. Protective plate; 2. Protective groove; 3. Pressure plate; 4. Groove; 5. Stabilizing assembly; 51. Limit block; 52. Handle; 53. Guide rod; 54. Threaded rod; 55. L-shaped plate; 56. Stabilizing plate; 57. Stabilizing pad; 6. Through groove; 7. Limiting assembly; 71. Limiting groove; 72. Sleeve block; 73. Fixing rod; 74. Spring; 8. Through hole; 9. Storage assembly; 91. Slide groove; 92. Magnetic block 1; 93. Magnetic block 2; 94. Storage rod; 95. Through hole; 10. Insert rod. DETAILED DESCRIPTION

[0025] 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.

[0026] Example 1

[0027] See also Figure 1-5 As shown, a tunnel arch foot support pad protection structure includes a protection plate 1;

[0028] A protective groove 2 is formed inside the protective plate 1, and the upper surface of the protective groove 2 extends to the outside of the protective plate 1. A pressure plate 3 is slidably connected to the inside of the protective groove 2 through a limit assembly 7. A plurality of evenly distributed insertion rods 10 are fixedly connected to the bottom of the pressure plate 3. A plurality of evenly distributed through holes 8 are formed on the lower surface of the protective groove 2.

[0029] The left and right sides of the protective groove 2 are provided with grooves 4, and the upper surface of the inner part of the groove 4 is provided with a through-type through-groove 6. A stabilizing component 5 is provided inside the groove 4, and a storage component 9 is provided on the left and right sides of the protective plate 1. The storage component 9 is installed with the stabilizing component 5; when working, the support connecting plate at the arch foot of the external arch frame is inserted into the protective groove 2 of the protective plate 1, and after plugging in, the pressure plate 3 is squeezed so that the pressure plate 3 slides through the limit of the limit component 7, and after the pressure plate 3 slides, the insertion rod 10 is driven to move through the through hole 8 and plugged into the tunnel soil, so that the protective plate 1 can be installed more firmly in the tunnel, and then the support connecting plate is fully protected by the protective plate 1, and the stabilizing component 5 inside the groove 4 can make the connection between the support connecting plate and the protective plate 1 firm, and make the protective effect of the protective plate 1 better, and the support connecting plate will not shift during use, so that the protective structure has a better use effect and is easy to use. At the same time, the storage component 9 facilitates the removal, use and storage of the protective component.

[0030] When the locking cam 75 is unlocked, the locking cam 78 is locked, and the locking cam 78 is locked, so the master latch 7 is locked and the master latch 7 is locked.

[0031] The storage component 9 includes a through hole 95 opened on one side of the interior of the groove 4, and a slide groove 91 is opened on one side of the interior of the through hole 95, and a magnetic block 1 92 is fixedly connected to one side of the interior of the slide groove 91, and a storage rod 94 passes through the interior of the through hole 95, and one end of the storage rod 94 is fixedly connected to the magnetic block 2 93, and the other end of the storage rod 94 extends into the interior of the groove 4, and the magnetic block 2 93 is magnetically connected to the magnetic block 1 92; when working, the storage rod 94 can be stably stored in the slide groove 91 through the magnetic connection between the magnetic block 1 92 and the magnetic block 2 93, and the stabilizing component 5 can also be stably stored in the groove 4 when not in use. When the stabilizing component 5 needs to be used, the stabilizing component 5 is moved so that it moves under the limit of the sliding connection between the storage rod 94 and the through hole 95, and the stabilizing component 5 can be stably moved out of the groove 4 for use.

[0032] The stabilizing assembly 5 includes an L-shaped plate 55 fixedly connected to the other end of the storage rod 94, a threaded rod 54 is threadedly connected to the center of the L-shaped plate 55, the bottom end of the threaded rod 54 is rotatably connected to a stabilizing plate 56, and a stabilizing pad 57 is fixedly connected to the bottom of the stabilizing plate 56. The front and rear of the L-shaped plate 55 are penetrated by guide rods 53, the bottom end of the guide rod 53 is fixedly connected to the top of the stabilizing plate 56, and the top end of the threaded rod 54 and the top end of the guide rod 53 both penetrate the through-slot 6; when working, after the L-shaped plate 55 is moved out of the groove 4, the threaded rod 54 is rotated to make the stabilizing plate 56, which is rotatably connected to the bearing through the shaft, move, and the stabilizing plate 56 moves. When the protective plate 1 needs to be removed for recycling, it is only necessary to rotate the threaded rod 54 first to make the stabilizing plate 56 and the stabilizing pad 57 disengage from the squeezing and clamping of the support pad connecting plate, and then move the threaded rod 54 to drive the stabilizing plate 56 and the stabilizing pad 57 to be stored in the groove 4 through the storage component 9, so that the protective plate 1 can be quickly removed from the support pad connecting plate.

[0033] The insertion rod 10 corresponds to the through hole 8, and the insertion rod 10 is adapted to the through hole 8; when working, it is convenient for the insertion rod 10 to pass through the through hole 8 and be inserted into the soil.

[0034] The top end of the guide rod 53 is fixedly connected to the limiting block 51 ; when working, the movement of the guide rod 53 is limited by the limiting block 51 to avoid the trouble of resetting after moving out of the L-shaped plate 55 .

[0035] Example 2

[0036] See also Figure 3As shown, compared with Example 1, as another embodiment of the present invention, the top end of the threaded rod 54 is fixedly connected to a handle 52; when working, the handle 52 facilitates the rotation of the threaded rod 54.

[0037] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A tunnel arch support pad protection structure, comprising a protection plate (1); Its characteristics are: A protective groove (2) is provided inside the protective plate (1), the upper surface of the protective groove (2) extends to the outside of the protective plate (1), a pressure plate (3) is slidably connected to the inside of the protective groove (2) via a limit assembly (7), a plurality of evenly distributed insertion rods (10) are fixedly connected to the bottom of the pressure plate (3), and a plurality of evenly distributed through holes (8) are provided on the lower surface of the protective groove (2); The protective groove (2) is provided with grooves (4) on both the left and right sides, the upper surface of the groove (4) is provided with a through-type through groove (6), a stabilizing component (5) is provided inside the groove (4), and the protective plate (1) is provided with storage components (9) on both the left and right sides, and the storage components (9) are installed with the stabilizing component (5).

2. The tunnel arch foot support pad protection structure according to claim 1, characterized in that: The limiting assembly (7) includes limiting grooves (71) provided on the left and right sides of the front and rear surfaces inside the protective groove (2); a fixing rod (73) is fixedly connected inside the limiting groove (71); a sleeve (72) is passed through the outer surface of the fixing rod (73); the sleeve (72) is slidably connected to the limiting groove (71); the sleeve (72) is fixedly connected to the pressure plate (3); a spring (74) is fixedly connected between the sleeve (72) and the limiting groove (71); and the spring (74) is sleeved on the outer surface of the fixing rod (73).

3. The tunnel arch foot support pad protection structure according to claim 2, characterized in that: The storage assembly (9) includes a through hole (95) provided on one side of the interior of the groove (4), a slide groove (91) provided on one side of the interior of the through hole (95), a magnetic block 1 (92) fixedly connected to one side of the interior of the slide groove (91), a storage rod (94) passing through the interior of the through hole (95), one end of the storage rod (94) fixedly connected to a magnetic block 2 (93), the other end of the storage rod (94) extending into the interior of the groove (4), the magnetic block 2 (93) being magnetically connected to the magnetic block 1 (92).

4. The tunnel arch support pad protection structure according to claim 3, characterized in that: The stabilizing assembly (5) includes an L-shaped plate (55) fixedly connected to the other end of the storage rod (94), a threaded rod (54) is threadedly connected to the center of the L-shaped plate (55), the bottom end of the threaded rod (54) is rotatably connected to a stabilizing plate (56), the bottom of the stabilizing plate (56) is fixedly connected to a stabilizing pad (57), the front and rear of the L-shaped plate (55) are penetrated by a guide rod (53), the bottom end of the guide rod (53) is fixedly connected to the top of the stabilizing plate (56), and the top end of the threaded rod (54) and the top end of the guide rod (53) are both penetrated by the through-slot (6).

5. The tunnel arch foot support pad protection structure according to claim 4, characterized in that: The insertion rod (10) corresponds to the through hole (8), and the insertion rod (10) is adapted to the through hole (8).

6. The tunnel arch foot support pad protection structure according to claim 5, characterized in that: The top end of the guide rod (53) is fixedly connected to the limiting block (51).

7. The tunnel arch foot support pad protection structure according to claim 6, characterized in that: The top end of the threaded rod (54) is fixedly connected to a handle (52).

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