Tunnel excavation blasting flyrock protection device

Abstract

The utility model relates to the technical field of construction protection, concretely is a tunnel excavation blasting fly rock protection device. Including outer frame and a plurality of protection plate mechanism. Protection plate mechanism includes spliced plate, buffer plate and the elastic connecting component of multiple groups between spliced plate and buffer plate, and the outer frame includes first stand, second stand and bottom bar. In this technical scheme, the structure of splicing makes its dismounting more convenient, and the disassembled parts are conveniently stored and transported, and the installation structure is stable and has the advantages of good impact resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to construction protection technical field, in particular to a tunnel excavation blasting fly rock protection device. BACKGROUND

[0002] With the accelerated development of economy and large-scale development of traffic infrastructure, the proportion of tunnel engineering is getting larger and larger. At present, in the mountain tunnel excavation construction of railway, highway and other engineering, drilling and blasting method is mostly used. In the blasting construction, fly rock and shock wave are often produced, among them, the flight path of fly rock is difficult to control, so the buildings and other facilities, equipment near the tunnel entrance, such as houses, line poles, electric towers, structures, etc. are easily damaged by fly rock and shock wave, at the same time, it also causes casualties of residents and construction personnel around the tunnel entrance.

[0003] The patent with publication number CN216011988U discloses a tunnel blasting fly rock shielding protection device, which comprises a profile steel arch and a profile steel cross beam. The profile steel arch is arranged in imitation of a tunnel entrance. A plurality of mounting hook groups are fixedly connected to the front part of the profile steel arch. A rearward extending connecting rod is fixedly connected to the rear part of the profile steel arch. An anchor rod for fixed connection with the side slope of the tunnel entrance is fixedly connected to the connecting rod. The profile steel arch is fixedly installed in front of the tunnel entrance through the connecting rod and the anchor rod. A downwardly hanging flexible rubber mesh is fixedly installed on the profile steel cross beam. A plurality of profile steel cross beams with the flexible rubber mesh are installed on the mounting hook groups. The profile steel cross beam is installed in front of the profile steel arch in a horizontal shielding manner. The length of the profile steel cross beam is slightly greater than the width of the profile steel arch at the position.

[0004] The above disclosed patent still has the following technical defects: the installation structure is unstable, and does not have an energy absorbing or buffering structure, which leads to easy damage of the protection structure. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art and provides a tunnel excavation blasting fly rock protection device.

[0006] The technical scheme of the utility model provides a tunnel excavation blasting fly rock protection device, which comprises:

[0007] A plurality of protection plate mechanisms, each protection plate mechanism comprising a splicing plate, a buffer plate and a plurality of elastic connection assemblies connected between the splicing plate and the buffer plate, each splicing plate having a second side plate connected to each of two adjacent sides thereof, and each splicing plate having a first insertion slot formed on each of two other sides thereof and matching the second side plate.

[0008] The outer frame comprises a first stand, a second stand and a bottom bar, wherein the bottom bar is arranged at the bottom end between the first stand and the second stand, the first stand is provided with a first side plate adjacent to the side edge of the second stand, the first side plate is in clearance fit with the first slot, the second stand is provided with a second slot adjacent to the side edge of the first stand, the second slot is in clearance fit with the second side plate, and the upper end of the bottom bar is provided with a third slot in clearance fit with the second side plate.

[0009] Preferably, a plurality of reinforcing mechanisms are further included, the reinforcing mechanism comprises a third stand, a supporting rod and a fixing plate, the third stand is of an L-shaped structure, one end of the supporting rod is rotationally connected with the third stand, and the fixing plate is rotationally connected with the other end of the supporting rod.

[0010] Preferably, two clamping pieces are connected to each of the plurality of splicing plates, the clamping piece is of an L-shaped structure, and the two clamping pieces are symmetrically arranged.

[0011] Preferably, the first stand, the second stand, the third stand and the supporting rod are all of a multi-section structure, and the adjacent two ends have a detachable connection structure.

[0012] Preferably, the bottom end of the first stand and the bottom end of the second stand are both provided with a support, and the bottom end of the fixing plate, the bottom end of the third stand and the two side supports are all provided with mounting holes.

[0013] Preferably, the elastic connecting assembly comprises a guide rod, a spring and a limiting block, wherein the guide rod is movably penetrated through the splicing plate, the two ends of the guide rod are respectively connected with the buffer plate and the limiting block, and the spring is sleeved and arranged on the guide rod.

[0014] Compared with the prior art, the utility model has the beneficial technical effects as follows:

[0015] 1. The splicing structure adopted in the technical scheme makes the disassembly and assembly convenient, facilitates the storage and transportation of the disassembled parts, and has a stable structure after splicing and good impact resistance.

[0016] 2. The buffer plate and the plurality of elastic connecting assemblies can buffer the impact during explosion and reduce the damage to the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 and Figure 2 are the structural schematic diagrams of the utility model.

[0018] Figure 3 is the explosion view of the utility model.

[0019] Figure 4 is the structural schematic diagram of the connection relationship between the splicing plate and the buffer plate in the utility model.

[0020] The drawing reference: 1, splice plate; 101, first slot; 2, first column; 201, first side plate; 3, second column; 301, second slot; 4, third column; 5, support rod; 6, fixed plate; 7, bottom rod; 8, buffer plate; 9, clamping piece; 10, guide rod; 11, spring; 12, limit block; 13, second side plate. DETAILED DESCRIPTION

[0021] Example one

[0022] As Figures 1-4 shown, the tunnel excavation blasting fly rock protection device provided by the embodiment comprises an outer frame and a plurality of protection plate mechanisms.

[0023] The protection plate mechanism comprises a splice plate 1, a buffer plate 8 and a plurality of elastic connecting assemblies connected between the splice plate 1 and the buffer plate 8. The elastic connecting assembly comprises a guide rod 10, a spring 11 and a limit block 12. The guide rod 10 is movably penetrated through the splice plate 1, and the two ends of the guide rod 10 are connected with the buffer plate 8 and the limit block 12 respectively. The spring 11 is sleeved and installed on the guide rod 10. The adjacent two sides of the splice plate 1 are both connected with a second side plate 13. The other two sides of the splice plate 1 are both provided with a first slot 101 matched with the second side plate 13.

[0024] The outer frame comprises a first column 2, a second column 3 and a bottom rod 7. The bottom rod 7 is arranged at the bottom end between the first column 2 and the second column 3. The first side plate 201 is arranged on the side edge of the first column 2 adjacent to the second column 3, and the first side plate 201 is matched with the first slot 101. The second column 3 is provided with a second slot 301 on the side edge adjacent to the first column 2, and the second slot 301 is matched with the second side plate 13. The upper end of the bottom rod 7 is provided with a third slot matched with the second side plate 13.

[0025] Specifically, the installation process of the device is as follows. The bottom rod 7 is arranged at the bottom end outside the tunnel, and then the first column 2 and the second column 3 are arranged on both sides of the bottom rod 7. A plurality of protection plate mechanisms are arranged inside the area formed by the outer frame. When installing adjacent two protection mechanisms, the second side plate 13 on the side of the splice plate 1 is clamped into the first slot 101 of the splice plate 1 adjacent to it. The first side plate 201 is clamped into the plurality of first slots 101 on the right side, and the plurality of second side plates 13 on the left side are clamped into the second slots 301. In this way, the installation work of the device is completed.

[0026] Through the installed buffer plate 8 and the elastic connecting assembly, when the debris generated by the blasting in the tunnel hits the buffer plate 8, the spring 11 is compressed, so that the buffer plate 8 gradually moves to the side of the splice plate 1, thereby absorbing the impact force during the explosion and gradually attenuating the energy of the explosion.

[0027] In summary, the technical scheme has the following advantages: the splicing structure makes it convenient to disassemble and store the disassembled parts; the buffer plate 8 and the multiple elastic connection assemblies can buffer the impact during explosion and reduce the damage to the device.

[0028] Example Two

[0029] As shown in Figures 1-3 The tunnel excavation blasting flyrock protection device of the present embodiment further includes multiple reinforcing mechanisms, which include third columns 4, support rods 5, and fixed plates 6. The third columns 4 are of an "L" shape, one end of the support rod 5 is rotationally connected to the third column 4, and the fixed plate 6 is rotationally connected to the other end of the support rod 5. Two clamping pieces 9 are connected to each of the multiple splicing plates 1, and the two clamping pieces 9 are symmetrically arranged. After the outer frame is fixed, the multiple third columns 4 are arranged side by side between the first column 2 and the second column 3, and the distance between the adjacent two third columns 4 is the same. When installing the protection plate mechanism, the third column 4 is inserted between the two clamping pieces 9, thereby achieving the limiting connection of the splicing plate 1 and the third column 4. The third column 4 can support the multiple splicing plates 1 and improve the stability of the protection plate mechanism installation.

[0030] The first column 2, the second column 3, the third column 4, and the support rod 5 are all of a multi-section structure, and the adjacent two ends have a detachable connection structure. In this way, the first column 2, the second column 3, the third column 4, and the support rod 5 can be disassembled into a multi-section structure, reducing the overall structure length and the occupied space.

[0031] The bottom ends of the first column 2 and the second column 3 are provided with supports, and the bottom end of the fixed plate 6, the third column 4, and the two side supports are all provided with mounting holes. The pin is inserted into the mounting hole and inserted into the soil, thereby achieving the fixed installation of the first column 2, the second column 3, the third column 4, and the fixed plate 6.

[0032] The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present application.

Claims

1. A device for protecting against flying rocks during tunnel excavation blasting, characterized in that, include: Multiple protective plate mechanisms, the protective plate mechanism includes splicing plate (1), buffer plate (8) and multiple sets of elastic connecting components connected between splicing plate (1) and buffer plate (8), a second side plate (13) is connected to each of the two adjacent sides of splicing plate (1), and a first slot (101) that fits into the second side plate (13) is opened on the other two sides of splicing plate (1); The outer frame includes a first column (2), a second column (3), and a base rod (7). The base rod (7) is located at the bottom between the first column (2) and the second column (3). A first side plate (201) is provided on the side of the first column (2) adjacent to the second column (3). The first side plate (201) is in clearance fit with the first slot (101). A second slot (301) is provided on the side of the second column (3) adjacent to the first column (2). The second slot (301) is in clearance fit with the second side plate (13). A third slot is provided at the upper end of the base rod (7). The third slot is in clearance fit with the second side plate (13).

2. The tunnel excavation blasting fly rock protection device according to claim 1, characterized in that, It also includes multiple reinforcing mechanisms, including a third column (4), a support rod (5) and a fixing plate (6). The third column (4) has an "L" shaped structure. One end of the support rod (5) is rotatably connected to the third column (4), and the fixing plate (6) is rotatably connected to the other end of the support rod (5).

3. The tunnel excavation blasting fly rock protection device according to claim 2, characterized in that, Each of the multiple splicing panels (1) is connected to two clips (9). The clips (9) are "L" shaped and the two clips (9) are symmetrically arranged.

4. The tunnel excavation blasting fly rock protection device according to claim 2, characterized in that, The first column (2), the second column (3), the third column (4) and the support rod (5) are all multi-segment structures with detachable connections between adjacent ends.

5. A tunnel excavation blasting fly rock protection device according to claim 2, characterized in that, The bottom ends of the first column (2) and the second column (3) are provided with supports, and mounting holes are provided on the bottom end of the fixing plate (6), the third column (4) and the supports on both sides.

6. The tunnel excavation blasting fly rock protection device according to claim 1, characterized in that, The elastic connection assembly includes a guide rod (10), a spring (11), and a limiting block (12). The guide rod (10) moves through the splicing plate (1), and both ends of the guide rod (10) are connected to the buffer plate (8) and the limiting block (12) respectively. The spring (11) is sleeved on the guide rod (10).

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