Tunnel blasting construction damping device

Abstract

The utility model provides a shock absorption device for tunnel blasting construction, relates to the technical field of tunnel construction, and aims to solve the problems that when blasting operation is implemented, an existing shock absorption device mostly focuses on buffering and reducing impact energy transmitted from a soil layer, and the shock absorption effect is poor. However, the process that blasting impact force is conducted to a conduction vertical rod of a damping device by means of an air medium is neglected, in the process, the impact force easily derives lateral shearing force on the surface of the conduction vertical rod, and along with increase of blasting frequency and accumulation of impact energy, the conduction vertical rod bears the lateral shearing effect for a long time, so that the structure is easily damaged; the damping device comprises a main body, and the service life of the damping device is shortened. When the conduction rod is subjected to lateral shear force generated by blasting, the lifting frame deflects to push the buffer plate, and the buffer plate buffers by means of the elastic piece, so that lateral shock absorption of the conduction rod is achieved, the conduction rod is effectively protected from being damaged by the lateral shear force, the overall service life of the shock absorption device is prolonged, and long-term stable operation of the shock absorption device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of tunnel construction, more specifically, it relates to a tunnel blasting construction damping device. BACKGROUND

[0002] In the field of underground engineering, tunnel blasting is a common means of exploiting tunnels and excavating underground space, and is widely used in various project constructions. Its operation process usually covers precise drilling in rock or soil medium, loading explosives and detonating, breaking rocks and soil by the huge energy released by explosives in an instant, and then shaping the predetermined tunnel profile. However, in the practice of tunnel blasting construction, the shock wave and vibration wave generated in an instant of explosion will spread and propagate to the surrounding strata and existing underground structures in various ways, inevitably bringing potential risks and damages to the surrounding environment and buildings. In view of this, a damping device emerges as the times require, aiming to reduce the adverse effects caused by blasting construction to the greatest extent.

[0003] Based on the prior art, it is found that the existing damping device has some deficiencies:

[0004] Firstly, when the blasting operation is implemented, the existing damping device mainly focuses on buffering and reducing the impact energy transmitted through the soil layer, but ignores the process of transmitting the blasting impact force to the damping device transmission vertical rod through the air medium. In this process, the impact force is easy to generate lateral shear force on the surface of the transmission vertical rod. With the increase of blasting frequency and the accumulation of impact energy, the transmission vertical rod is subjected to long-term lateral shear action, which is easy to cause structural damage and reduce the service life of the damping device.

[0005] Secondly, the shock wave generated by blasting has strong air propagation ability and can directly act on the damping device. Under the strong impact of the shock wave, the damping device is subjected to unbalanced external force and often displaces, even produces irregular swing. In this way, the damping device is difficult to maintain a stable working state and cannot accurately and efficiently exert its preset damping effect, thereby failing to provide reliable damping protection for tunnel blasting construction. UTILITY MODEL CONTENTS

[0006] In view of the above technical problems, the utility model relates to a tunnel blasting construction damping device to solve the problem that the existing damping device only reduces the impact force transmitted by the soil layer when blasting, while the impact force generated by blasting is transmitted to the transmission vertical rod of the damping device through the air and forms lateral shear force on the transmission vertical rod, causing damage to the transmission vertical rod. Secondly, during blasting, the shock wave of blasting will be directly transmitted to the damping device through the air, causing the damping device to displace or swing, so that it cannot stably exert its damping function.

[0007] The first aspect of the present disclosure provides a tunnel blasting construction damping device, which is achieved by the following specific technical means.

[0008] The tunnel blasting construction damping device comprises a main body, a fixed frame, a buffer plate, a conducting rod, a telescopic rod, a positioning rod, a force plate, a mounting frame, a stable plate, a protrusion, a rectangular lap joint groove, a rectangular bottom groove, a mounting groove and a protrusion.

[0009] The main body is in a rectangular structure, and the upper end of the main body is provided with the fixed frame.

[0010] According to some schemes of the present application, the four edge positions of the upper end of the main body are provided with the rectangular lap joint groove.

[0011] According to some schemes of the present application, the inside of the main body is slidably installed with the lifting frame through the elastic member.

[0012] According to some schemes of the present application, the inside of the main body is provided with the mounting frame, the two ends of the mounting frame are inserted into the bottom groove, the grooves on the two sides of the mounting frame are inserted into the protrusions at the two ends of the bottom groove, the inside of the mounting frame is slidably installed with the stable plate through the elastic member, and the conical protruding structure at the lower end of the stable plate can be extended from the lower end of the mounting frame.

[0013] According to some schemes of the present application, the inside of the fixed frame is provided with four groups of sliding grooves, the buffer plate is slidably installed above the sliding grooves through the elastic member, and the end of the buffer plate extends into the rectangular through groove in the middle of the fixed frame.

[0014] According to some schemes of the present application, the inside of the conducting rod is slidably installed with the telescopic rod at the upper end, and the inside of the telescopic rod is equidistantly provided with the circular positioning hole.

[0015] According to some schemes of the present application, the positioning rod is inserted into the upper end of the conducting rod, the positioning rod can penetrate the positioning hole, and the telescopic rod is fixedly installed with the force plate.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. In the device, the conducting rod and the stabilizing plate are arranged, the bottom groove is arranged at the bottom of the main body, the mounting frame is inserted into the main body through the bottom groove, and the stabilizing plate in the mounting frame is slidingly installed through the elastic element, when the conducting rod is impacted and lowered, the stabilizing plate can be pushed, the conical protruding structure at the lower end of the stabilizing plate is pushed out from the bottom of the main body and inserted into the ground, the displacement of the device when impacted is effectively prevented, the stability of the device when damping is greatly improved, the reliable continuity of the damping process is ensured, and stable protection is provided for the surrounding environment and buildings of tunnel blasting construction.

[0018] 2. In the device, the conducting rod and the buffer plate are arranged, the sliding groove is arranged in the fixed frame, the buffer plate is slidingly installed above the sliding groove through the elastic element, the conducting rod penetrates through the fixed frame and is in contact with the buffer plate, when the conducting rod is subjected to the lateral shear force generated by blasting, the buffer plate can be pushed by the deflection of the lifting frame, and the buffer plate is buffered by the elastic element, so that the lateral damping of the conducting rod is realized, the conducting rod is effectively protected from damage by the lateral shear force, the service life of the damping device is prolonged, and long-term stable operation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present disclosure will be better understood by one of ordinary skill in the art through the following drawings, and the advantages of the present disclosure will be more clearly embodied. The drawings described herein are only for the purpose of illustrating selected embodiments and are not intended to limit the scope of the present disclosure.

[0020] In the drawings:

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 2 is a schematic diagram of the disassembled structure of the utility model.

[0023] Figure 3 is a schematic diagram of the connection structure of the fixed frame and the conducting rod of the utility model.

[0024] Figure 4 is a schematic diagram of the cross-sectional structure of the main body of the utility model.

[0025] Figure 5 is a schematic diagram of the cross-sectional structure of the conducting rod of the utility model.

[0026] Figure 6 is a schematic diagram of the connection structure of the conducting rod and the lifting frame of the utility model.

[0027] In the drawings, the correspondence between the component names and the drawing numbers is as follows:

[0028] 1, main body; 101, lap joint groove; 102, bottom groove; 103, lifting frame; 1031, assembly groove; 104, mounting frame; 1041, stabilizing plate;

[0029] 2, fixed frame; 201, sliding groove; 202, buffer plate;

[0030] 3, conducting rod; 301, telescopic rod; 302, positioning hole; 303, positioning rod; 304, stress plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] Embodiment 1: as shown in the accompanying Figure 1 to the accompanying Figure 6 :

[0033] The utility model provides a kind of tunnel blasting construction damping device, comprising: main body 1;Main body 1 is rectangular structure;The upper end of main body 1 is equipped with fixed frame 2, and the periphery of fixed frame 2 is overlapped in the lap joint groove 101 above main body 1, rectangular through slot is opened in the middle position of fixed frame 2, and conducting rod 3 is equipped in main body 1, and the lower end of conducting rod 3 is spherical structure, and the spherical structure of conducting rod 3 lower end is engaged with the assembly groove 1031 in the lifting frame 103 inside main body 1, and the spherical structure of conducting rod 3 lower end is contacted with the stabilizing plate 1041 inside main body 1, and conducting rod 3 is passed through the rectangular through slot in the middle of fixed frame 2, and the outside of conducting rod 3 is contacted with the buffer plate 202 above fixed frame 2.

[0034] As the second embodiment of the present application, on the basis of embodiment 1, as shown in the accompanying Figure 4 , the four edge positions of the upper end of main body 1 are equipped with rectangular lap joint groove 101, rectangular bottom groove 102 is opened in the middle position of the bottom of main body 1, and the two sides of bottom groove 102 are equipped with protruding block, and lifting frame 103 is slidably installed in the inside of main body 1 by elastic member, assembly groove 1031 is opened in the inside middle position of lifting frame 103, and mounting frame 104 is equipped in the inside lower end of main body 1, and the two ends of mounting frame 104 are inserted into bottom groove 102, and the recess of the two sides of mounting frame 104 is inserted into the protruding block of the two ends of bottom groove 102, and stabilizing plate 1041 is slidably installed in the inside of mounting frame 104 by elastic member, and the tapered protruding structure of the lower end of stabilizing plate 1041 can be stretched out from the lower end of mounting frame 104.

[0035] The application installs the rectangular lifting frame 103 inside the main body 1 through sliding, and opens a circular assembly slot 1031 in the lifting frame 103, and the conducting rod 3 is movably installed on the lifting frame 103 through the assembly slot 1031, when the conducting rod 3 is impacted, the lifting frame 103 can be compressed by the compression spring, thereby playing a damping role, a bottom groove 102 is arranged at the bottom of the main body 1, the mounting frame 104 is inserted into the inside of the main body 1 through the bottom groove 102, the stable plate 1041 with a conical protruding structure is slidably installed in the inside of the mounting frame 104 through the elastic member, when the conducting rod 3 is impacted and lowered, the stable plate 1041 can be pushed, and the conical protruding structure on the stable plate 1041 is pushed out from the bottom of the main body 1 and inserted into the ground, thereby preventing the device from being displaced when impacted, and improving the stability of the device when damping.

[0036] As the third embodiment of the application, on the basis of the first embodiment, as shown in Figure 3 The inside of the fixed frame 2 is provided with four groups of sliding grooves 201, the upper part of the sliding groove 201 is slidably installed with a buffer plate 202 through an elastic member, and the end of the buffer plate 202 extends into the rectangular through slot in the middle of the fixed frame 2.

[0037] The application installs the fixed frame 2 on the main body 1 through the lap joint groove 101, and the buffer plate 202 is slidably installed on the upper end of the fixed frame 2 through the sliding groove 201, the conducting rod 3 passes through the fixed frame 2, and the fixed frame 2 is in contact with the four groups of buffer plates 202, when the conducting rod 3 is impacted by the lateral shear force generated by blasting, the lifting frame 103 can be deflected, and the buffer plate 202 can be pushed, thereby realizing lateral damping of the conducting rod 3.

[0038] As the fourth embodiment of the application, on the basis of the first embodiment, as shown in Figure 5 The inside upper end of the conducting rod 3 is slidably installed with a telescopic rod 301, equidistant circular positioning holes 302 are opened in the inside of the telescopic rod 301, a positioning rod 303 is inserted into the telescopic rod 301, the positioning rod 303 can penetrate through the positioning hole 302, and a stress plate 304 is fixedly installed on the telescopic rod 301.

[0039] The application movably installs the conducting rod 3 on the lifting frame 103 through the assembly slot 1031, slidably installs the telescopic rod 301 in the conducting rod 3, inserts the positioning rod 303 into the corresponding positioning hole 302, and fixes the telescopic rod 301 in the conducting rod 3, so that the stress plate 304 on the telescopic rod 301 is in contact with the inside of the tunnel, when the blasting impact force is conducted to the stress plate 304 through the soil layer, the conducting rod 3 can drive the spring to be compressed through the lifting frame 103, thereby playing a damping role.

[0040] The specific use mode and role of the embodiment are as follows:

[0041] The utility model discloses a tunnel vertical impact force dissipating device, including the main body 1 of tunnel, the fixed frame 2 of tunnel, the conductive pole 3 of tunnel, the fixed frame 2 is installed on the main body 1, the conductive pole 3 is installed on the fixed frame 2, and the fixed frame 2 is installed on the main body 1. Figures 1-6 As shown in the utility model, the mounting frame 104 is inserted into the lower end of the main body 1 through the bottom groove 102, and the stable plate 1041 is slidably installed in the mounting frame 104. The lifting frame 103 is slidably installed in the main body 1. The fixed frame 2 is installed on the upper end of the main body 1 through the lap joint groove 101. The buffer plate 202 is movably installed above the fixed frame 2. The spherical structure at the lower end of the conductive pole 3 is engaged in the assembly groove 1031, so that the conductive pole 3 passes through the fixed frame 2 and contacts the buffer plate 202 at the side end. The telescopic rod 301 is slidably installed in the conductive pole 3, so that the stress plate 304 contacts the tunnel. The positioning rod 303 is inserted into the positioning hole 302 through the conductive pole 3, so that the telescopic rod 301 is fixed. When blasting occurs, the impact force is transmitted to the stress plate 304 at the upper end of the conductive pole 3 through the soil layer. After being impacted, the conductive pole 3 is pressed downward, and the assembly groove 1031 in the lifting frame 103 in the main body 1 is engaged with the spherical structure at the lower end of the conductive pole 3, so that the lifting frame 103 is driven to slide downward. The elastic member is compressed and stored energy, and the vertical impact is buffered. At the same time, the blasting impact force makes the conductive pole 3 bear a lateral shear force, and the conductive pole 3 deflects and pushes the buffer plate 202 in the fixed frame 2. The buffer plate 202 slides along the sliding groove 201 through the elastic member, dissipates the lateral impact force, and prevents the conductive pole 3 from being damaged. Under the vertical impact, the conductive pole 3 is pressed to trigger the stable plate 1041 in the main body 1. The stable plate 1041 slides in the mounting frame 104. The conical protrusion at the lower end of the stable plate 1041 is inserted into the ground through the elastic force, and the device is locked through the friction force and the supporting force to prevent displacement and swing.

[0042] The foregoing disclosure provides description and illustration, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations can be made in light of the above disclosure or can be acquired from practice of the embodiments.

[0043] Even though a specific combination of features is recited in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of the various embodiments. In fact, many of these features can be combined in ways not specifically recited in the claims or disclosed in the specification. Although each dependent claim listed below can only directly depend on one claim, the disclosure of the various embodiments includes each dependent claim in combination with every other claim in the claim set.

Claims

1. A vibration damping device for tunnel blasting construction, comprising: Main body (1); the main body (1) is a rectangular structure; characterized in that the upper end of the main body (1) is provided with a fixed frame (2), the four sides of the fixed frame (2) overlap in the overlapping groove (101) above the main body (1), a rectangular through groove is opened in the middle position of the fixed frame (2), a guide rod (3) is provided inside the main body (1), the lower end of the guide rod (3) is a spherical structure, the spherical structure at the lower end of the guide rod (3) engages with the assembly groove (1031) in the lifting frame (103) inside the main body (1), the spherical structure at the lower end of the guide rod (3) contacts the stabilizing plate (1041) inside the main body (1), and the guide rod (3) passes through the rectangular through groove in the middle of the fixed frame (2), and the outside of the guide rod (3) contacts the buffer plate (202) above the fixed frame (2).

2. The tunnel blasting construction vibration damping device according to claim 1, characterized in that, The upper part of the main body (1) has a rectangular overlapping groove (101) on its four sides, and a rectangular bottom groove (102) is provided in the middle of the bottom of the main body (1). The bottom groove (102) has protrusions on both sides.

3. The tunnel blasting construction vibration damping device according to claim 1, characterized in that, The main body (1) has a lifting frame (103) slidably installed inside by an elastic element, and an assembly slot (1031) is provided in the middle of the lifting frame (103).

4. A vibration damping device for tunnel blasting construction according to claim 2, characterized in that, The lower end of the main body (1) is provided with a mounting bracket (104). The two ends of the mounting bracket (104) are inserted into the bottom groove (102), and the grooves on both sides of the mounting bracket (104) are inserted into the protrusions at both ends of the bottom groove (102). A stabilizing plate (1041) is slidably installed inside the mounting bracket (104) through an elastic element. The conical protrusion structure at the lower end of the stabilizing plate (1041) can extend from the lower end of the mounting bracket (104).

5. A vibration damping device for tunnel blasting construction according to claim 1, characterized in that, The fixed frame (2) has four sets of sliding grooves (201) inside. A buffer plate (202) is slidably installed above the sliding groove (201) by an elastic element. The end of the buffer plate (202) extends into the rectangular through groove in the middle of the fixed frame (2).

6. A vibration damping device for tunnel blasting construction according to claim 1, characterized in that, The upper part of the inner side of the transmission rod (3) is slidably installed with a telescopic rod (301), and the telescopic rod (301) is provided with circular positioning holes (302) at equal intervals inside.

7. A vibration damping device for tunnel blasting construction according to claim 6, characterized in that, The upper end of the transmission rod (3) is fitted with a positioning rod (303), which can pass through the positioning hole (302). The telescopic rod (301) is fixedly installed with a force plate (304).

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