Protective device for tunnel blasting

Abstract

The utility model relates to the technical field of tunnel construction, and particularly discloses a protective device for tunnel blasting, which comprises a protective frame, a first pre-embedded seat is fixedly mounted on one side of the protective frame, a first fixing part is rotatably connected in the first pre-embedded seat, a first protective plate is arranged at the top of the protective frame, and a second protective plate is arranged on one side of the protective frame. A protection assembly is arranged on the front face of the protection frame. Through the arrangement of the protection assembly, the adopted protection net is foldable, when a worker disassembles the mounting frame, the protection net can be taken down one by one, a groove and the protection net are matched with a rotating shaft, so that the protection net can be attached to the protection frame, and due to the arrangement of a fixing block and a fixing bolt, the safety of the worker is improved. The protective net is fixed to the bolt holes during installation, the fixing blocks are attached to the clamping grooves during folding, and workers can conveniently pass through the protective net by adopting the closing door.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a protective device for tunnel blasting. Background Art

[0002] Tunnel construction usually uses blasting excavation methods, which can produce harmful effects such as flying rocks and blasting shock waves. These harmful effects are also called hazard effects or negative effects. Urban tunnels are located in urban areas with large populations and buildings, so if flying rocks are released, the consequences will be huge.

[0003] At present, the common sequence of tunnel construction is to first excavate the backslope of the tunnel entrance and support the slope in time. After excavation to the advanced support design elevation, the advanced support construction is immediately carried out. When the support strength reaches the design requirement, a hydraulic breaker is used to excavate the tunnel entrance. Then, the support at the junction of light and dark is completed before entering the tunnel. After the blasting excavation conditions are met, the tunnel is excavated by blasting. During the construction of the tunnel entrance and the tunnel entrance, there may be risks such as falling rocks and collapse on the backslope. Moreover, the tunnel entrance excavation can only be started after the open tunnel construction is completed. The harmful effects of blasting during blasting excavation may cause injury or damage to construction personnel, equipment and surrounding protective objects, resulting in a lot of personal and property losses. Common units mostly use wooden boards, sandbags or other temporary turnover materials for protection during blasting construction at the tunnel entrance. The operation is cumbersome and wastes labor, and the protection effect is not ideal. It is also inconvenient for personnel to pass. Utility Model Content

[0004] In view of the deficiencies of the existing technology, the utility model provides a protective device for tunnel blasting, which solves the problems of poor protective effect and inconvenience for personnel passage.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A protective device for tunnel blasting, comprising a protective frame, a first embedded seat fixedly mounted on one side of the protective frame, a first fixing member rotatably connected to the interior of the first embedded seat, a first protective plate provided on the top of the protective frame, a second protective plate provided on one side of the protective frame, and a protective assembly provided on the front of the protective frame;

[0006] The protection assembly includes a mounting bracket, the mounting bracket is arranged at the positive end of the protection bracket and is fixedly connected, a groove is provided on the top of the mounting bracket, a protection net is provided inside the groove, a fixing block is fixedly installed behind the protection net, a fixing bolt is rotatably connected inside the fixing block, a rotating shaft is provided inside the mounting bracket, a card slot is provided at the back of the mounting bracket, and a closing door is provided inside the mounting bracket;

[0007] The inner wall of the protective frame is provided with a fixing assembly, the inner wall of the protective frame is provided with a bolt hole, and the outer surface of the protective frame is provided with a mounting groove.

[0008] Preferably, the fixing assembly includes a second embedded seat, which is located at the bottom end of the inner side of the protective frame. The second embedded seat is rotatably connected to the inside of the second embedded seat. The number of the second embedded seats is set to two groups, and they are arranged on the left and right sides of the inner wall of the protective frame. The number of the second fixing members is set to several, and they pass through the interior of the second embedded seat.

[0009] Preferably, a first buffer spring is provided at the bottom of the first protective plate, and the number is set to several. An installation groove is opened inside one side of the protective frame, and the number is set to two groups and is interconnected with the left and right sides of the inside of the protective frame. A second buffer spring is fixedly installed inside the installation groove, and the number is set to several.

[0010] Preferably, the number of the mounting frames is set to two groups, and two are arranged in a group on the front and rear sides of the inside of the protective frame, the number of the grooves is set to four groups, and are arranged on the left and right sides of the top of the mounting frame, and the number of the fixing blocks is set to two groups, and are arranged on the left and right sides of the protective net.

[0011] Preferably, the rotating shaft passes through the interior of the mounting frame and the groove, and is interconnected with the protective net. The number of the mounting grooves is set to two groups, and they are opened inside the left and right sides of the mounting frame. The position of the bolt hole is set away from the top of the first embedded seat, and is set on the left and right sides of the protective frame.

[0012] Beneficial effects

[0013] The utility model provides a tunnel blasting protection device. Compared with the existing technology, it has the following features:

[0014] Beneficial effects:

[0015] (1) Through the setting of the protection component, the protective net is foldable, and when the staff disassembles the installation frame, the protective net can be removed as well. The groove and the protective net cooperate with the rotating shaft so that the protective net can fit with the protection frame. Due to the setting of the fixing block and the fixing bolt, the protective net is fixed to the bolt hole during installation, and when folded, the fixing block fits with the slot. The closed door allows the staff to pass through conveniently.

[0016] (2) The protective frame is fixed to the ground by the arrangement of the first embedded seat and the second embedded seat, and the first embedded seat is arranged on the outside of the protective frame to fix the protective frame, and the second embedded seat is arranged on the inside of the protective frame to provide a secondary fixation for the protective frame. The arrangement of the first buffer spring and the second buffer spring is adopted, and the first buffer spring is used to buffer the first protective plate, so that the stones generated by the blasting will injure the workers, and the second buffer spring is used to buffer the second protective plate, so that the second protective plate can protect the left and right sides of the protective frame from the rolling rocks generated by the explosion impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a tunnel blasting protection device according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a protective assembly structure according to an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a fixed component structure according to an embodiment of the present invention;

[0020] Figure 4 This is a plan view of the overall structure of a protective device for tunnel blasting according to an embodiment of the present invention.

[0021] In the figure: 1. Protective frame; 2. First embedded seat; 3. First fixing piece; 4. First protective plate; 5. Second protective plate; 6. Mounting frame; 7. Groove; 8. Protective net; 9. Fixing block; 10. Fixing bolt; 11. Rotating shaft; 12. Slot; 13. Closing door; 14. Bolt hole; 15. Second embedded seat; 16. Second fixing piece; 17. First buffer spring; 18. Mounting slot; 19. Second buffer spring. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1:

[0024] See also Figure 1-4As shown, this embodiment provides a tunnel blasting protection device, including a protection frame 1, a first embedded seat 2 is fixedly mounted on one side of the protection frame 1, a first fixing member 3 is rotatably connected to the interior of the first embedded seat 2, a first protection plate 4 is provided on the top of the protection frame 1, a second protection plate 5 is provided on one side of the protection frame 1, and a protection assembly is provided on the front of the protection frame 1;

[0025] The protection assembly includes a mounting frame 6, which is positioned at the positive end of the protection frame 1 and is fixedly connected. A groove 7 is provided on the top of the mounting frame 6, and a protection net 8 is provided inside the groove 7. A fixing block 9 is fixedly installed behind the protection net 8, and a fixing bolt 10 is rotatably connected inside the fixing block 9. A rotating shaft 11 is provided inside the mounting frame 6, a card slot 12 is provided behind the mounting frame 6, a closing door 13 is provided inside the mounting frame 6, and a mounting groove 18 is provided on the outer surface of the protection frame 1;

[0026] The inner wall of the protective frame 1 is provided with a fixing component, and the inner wall of the protective frame 1 is opened with a bolt hole 14. The protective component enables the staff to pull the protective net 8 out of the slot 12 during use, so that the protective net 8 is pushed to the same horizontal plane as the mounting frame 6, and the fixing block 9 is aligned with the bolt hole 14, and the fixing bolt 10 is aligned with the bolt hole 14, so that the protective net 8 is fixed. Before installation, the staff uses the first fixing member 3 and the second fixing member 16 to fix the first embedded seat 2 and the second embedded seat 15 respectively, so that the protective frame 1 is fixed, and the first buffer spring 17 and the second buffer spring 19 respectively buffer the first protective plate 4 and the second protective plate 5, and the first protective plate 4 protects the top of the protective frame 1 from falling rocks caused by the explosion, and the second protective plate 5 protects the left and right sides of the protective frame 1 from rolling rocks caused by the explosion.

[0027] When the present invention is in use, the staff first fits the first embedded seat 2 and the second embedded seat 15 to the ground using the first fixing member 3 and the second fixing member 16, so that the protective frame 1 is fixed. During use, the staff pulls the protective net 8 out of the card slot 12, pushes the protective net 8 to the same horizontal plane as the mounting frame 6, uses the fixing block 9 to align the bolt hole 14, and uses the fixing bolt 10 to align the bolt hole 14, so that the protective net 8 is fixed, and the staff opens it by using the closing door 13. The first protective plate 4 protects the top of the protective frame 1 from falling rocks generated by the explosion, and the second protective plate 5 protects the left and right sides of the protective frame 1 from rolling rocks generated by the explosion.

[0028] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A protective device for tunnel blasting, characterized by: The protective frame (1) comprises a first embedded seat (2) fixedly mounted on one side of the protective frame (1), a first fixing member (3) being rotatably connected inside the first embedded seat (2), a first protective plate (4) being provided on the top of the protective frame (1), a second protective plate (5) being provided on one side of the protective frame (1), and a protective assembly being provided on the front side of the protective frame (1); The protection component comprises a mounting frame (6), the mounting frame (6) is arranged at the positive end of the protection frame (1) and is fixedly connected, a groove (7) is provided on the top of the mounting frame (6), a protection net (8) is provided inside the groove (7), a fixing block (9) is fixedly installed behind the protection net (8), a fixing bolt (10) is rotatably connected inside the fixing block (9), a rotating shaft (11) is provided inside the mounting frame (6), a card slot (12) is provided on the back of the mounting frame (6), and a closing door (13) is provided inside the mounting frame (6); The inner wall of the protective frame (1) is provided with a fixing assembly, the inner wall of the protective frame (1) is provided with a bolt hole (14), and the outer surface of the protective frame (1) is provided with a mounting groove (18).

2. A tunnel blasting protection device according to claim 1, characterized in that: The fixing assembly includes a second embedded seat (15), the second embedded seat (15) is arranged at the bottom end of the inner side of the protective frame (1), the second embedded seat (15) is rotatably connected to the inside of the second embedded seat (15), the number of the second embedded seats (15) is set to two groups, and they are arranged on the left and right sides of the inner wall of the protective frame (1), and the number of the second fixing members (16) is set to be several, and they pass through the interior of the second embedded seat (15).

3. The tunnel blasting protection device according to claim 1, characterized in that: The bottom of the first protective plate (4) is provided with a first buffer spring (17), and the number is set to be several. The interior of one side of the protective frame (1) is provided with a mounting groove (18), and the number is set to be two groups and connected to the left and right sides of the interior of the protective frame (1). The interior of the mounting groove (18) is fixedly installed with a second buffer spring (19), and the number is set to be several.

4. The tunnel blasting protection device according to claim 1, characterized in that: The number of the mounting frames (6) is set to two groups, and two are arranged in a group on the front and rear sides of the interior of the protective frame (1); the number of the grooves (7) is set to four groups, and are arranged on the left and right sides of the interior of the top of the mounting frame (6); the number of the fixing blocks (9) is set to two groups, and are arranged on the left and right sides of the protective net (8).

5. The tunnel blasting protection device according to claim 1, characterized in that: The rotating shaft (11) passes through the interior of the mounting frame (6) and the groove (7), and is connected to the protective net (8). The number of the mounting grooves (18) is set to two groups, and they are opened inside the left and right sides of the mounting frame (6). The position of the bolt hole (14) is set away from the top of the first embedded seat (2) and is set on the left and right sides of the protective frame (1).

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