Damping device for deep hole blasting

Abstract

The utility model relates to the technical field of deep hole blasting, in particular to a vibration damper for deep hole blasting, which comprises a barrel. A vibration reduction mechanism is arranged on the inner side of the barrel and comprises a first movable groove, the first movable groove is formed in the inner side of the barrel, and a first spring is fixedly connected to the inner wall of the first movable groove. Through the arrangement of the baffle and the rubber pad, when impact is generated during blasting, the impact can be prevented from directly acting on the barrel body and then being directly conducted to the hole wall, the movable rod can move in the first movable groove through the elastic property of the first spring, and then the elastic property of the first spring is matched with the effect of the damping piece, so that the impact can be prevented from being directly conducted to the hole wall. According to the invention, blasting impact can be relieved to a certain extent, transmission of energy to surrounding rocks or structures can be reduced, transverse vibration strength can be reduced, and influence on the surrounding structures due to excessive vibration can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of deep hole blasting technology, specifically to a vibration damping device for deep hole blasting. Background Technology

[0002] Deep-hole blasting is a commonly used blasting technique in mining, tunnel construction, and earthmoving engineering. It involves filling and detonating explosives in deep boreholes (typically deeper than 5 meters and 70-200 mm in diameter) to achieve large-scale crushing and removal of rock or soil. It offers advantages such as high-quality crushing, particle size meeting engineering requirements, concentrated blast piles with a certain degree of looseness, and is widely used in rock cutting excavation and other engineering fields. Compared to shallow-hole blasting, deep-hole blasting has higher efficiency and a larger blasting scale, making it suitable for large-scale earthmoving excavation and hard rock crushing.

[0003] In existing technologies, deep-hole blasting typically involves drilling first, then loading explosive charges into the drilled deep hole for blasting. Since the energy and impact generated by the blasting act directly on the hole wall, and the blasting process cannot effectively mitigate this impact, the energy transfer to the surrounding rock mass or structure cannot be reduced effectively. This can easily lead to excessive vibration and damage to the surrounding structure. Therefore, to solve the above problems, a vibration reduction device for deep-hole blasting is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a vibration damping device for deep hole blasting, in order to solve the problem mentioned in the background art that the energy and impact generated by blasting directly act on the hole wall, and the blasting process cannot effectively mitigate this impact, thus failing to reduce the transmission of energy to the surrounding rock mass or structure, which easily leads to excessive vibration and damage to the surrounding structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vibration damping device for deep hole blasting, comprising a cylinder;

[0006] A vibration damping mechanism is provided on the inner side of the cylinder. The vibration damping mechanism includes a first movable groove, which is opened on the inner side of the cylinder. A first spring is fixedly connected to the inner wall of the first movable groove. A movable rod is fixedly connected to the surface of the first spring. A baffle is fixedly connected to the surface of the movable rod. A rubber pad is fixedly connected to the end of the baffle away from the movable rod. A damping element is fixedly connected to the inner wall of the first movable groove. A second movable groove is opened on the inner side of the movable rod.

[0007] Preferably, the first movable grooves are arranged in twelve groups on the inner side of the cylinder, one end of the first spring is fixedly connected to the first movable groove, and the other end of the first spring is fixedly connected to the movable rod.

[0008] Preferably, the movable rod moves inside the first movable groove, and the two ends of the damping member are respectively connected to the first movable groove and the second movable groove.

[0009] Preferably, a stabilizing mechanism is provided on the inner side of the cylinder. The stabilizing mechanism includes a third movable groove, which is opened on the inner side of the cylinder. A screw is threadedly connected to the inner side of the cylinder. An inclined block is fixedly connected to the bottom end of the screw. A limit rod is fixedly connected to the inner wall of the third movable groove. A moving block is movably connected to the inner side of the third movable groove. A positioning pin is fixedly connected to the surface of the moving block. A second spring is fixedly connected to the surface of the moving block.

[0010] Preferably, the inclined block, the moving block, and the positioning pin are all movable inside the third movable groove, and the inclined block and the limiting rod are movably connected.

[0011] Preferably, one end of the second spring is fixedly connected to the third movable groove, and the other end of the positioning pin is fixedly connected to the moving block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting up baffles and rubber pads, the impact generated during blasting can be prevented from acting directly on the cylinder and being transmitted directly to the borehole wall. The elasticity of the first spring allows the movable rod to move within the first movable groove. The elasticity of the first spring, in conjunction with the damping component, can alleviate the impact of the blasting to a certain extent, thereby reducing the transmission of energy to the surrounding rock mass or structure. This helps to reduce the intensity of lateral vibration and prevents the impact on the surrounding structure caused by excessive vibration.

[0014] 2. By rotating the screw, the inclined block can move inside the third movable groove. The movement of the inclined block can squeeze the moving block, which in turn allows the positioning nail to move and be driven into the inner wall of the blast hole under the action of the moving block. This facilitates the connection and fixation between the cylinder and the hole wall, making the placement of the cylinder more stable and thus facilitating better vibration reduction during blasting through the internal structure of the cylinder. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a side sectional view of the structure of this utility model;

[0017] Figure 3 This is a side sectional view of the structure of the movable rod and damping component of this utility model;

[0018] Figure 4 This is an exploded side view sectional view of the inclined block and the movable block of this utility model.

[0019] In the diagram: 1. Cylinder; 2. First movable groove; 21. First spring; 22. Movable rod; 23. Baffle; 24. Rubber pad; 25. Damping component; 26. Second movable groove; 3. Third movable groove; 31. Screw; 32. Inclined block; 33. Limiting rod; 34. Moving block; 35. Positioning pin; 36. Second spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 One embodiment provided by this utility model:

[0022] A vibration damping device for deep hole blasting includes a cylinder 1;

[0023] A vibration damping mechanism is provided on the inner side of the cylinder 1. The vibration damping mechanism includes a first movable groove 2, which is opened on the inner side of the cylinder 1. A first spring 21 is fixedly connected to the inner wall of the first movable groove 2. A movable rod 22 is fixedly connected to the surface of the first spring 21. A baffle 23 is fixedly connected to the surface of the movable rod 22. A rubber pad 24 is fixedly connected to the end of the baffle 23 away from the movable rod 22. A damping element 25 is fixedly connected to the inner wall of the first movable groove 2. A second movable groove 26 is opened on the inner side of the movable rod 22. The first spring 21, the movable rod 22 and the damping element 25 can provide support for the baffle 23. The first spring 21 and the damping element 25 can buffer the direct action of the explosion shock wave on the borehole wall, reduce the lateral vibration intensity, and reduce the energy transmission to the surrounding rock mass or structure, thereby reducing the impact of blasting vibration on the surrounding structure and achieving protection.

[0024] Furthermore, twelve sets of first movable grooves 2 are provided on the inner side of the cylinder 1. One end of the first spring 21 is fixedly connected to the first movable groove 2, and the other end of the first spring 21 is fixedly connected to the movable rod 22. By setting the first spring 21, the instantaneous impact energy generated by the explosion can be absorbed, thereby preventing the energy from being directly transmitted to the hole wall or surrounding structure.

[0025] Furthermore, the movable rod 22 moves inside the first movable groove 2, and the two ends of the damping member 25 are respectively connected to the first movable groove 2 and the second movable groove 26. By setting the damping member 25, the damping member 25 can provide greater resistance during explosion, which facilitates the rapid suppression of the reciprocating motion of the first spring 21, thereby shortening the vibration duration.

[0026] Furthermore, a stabilizing mechanism is provided on the inner side of the cylinder 1. The stabilizing mechanism includes a third movable groove 3, which is opened on the inner side of the cylinder 1. A screw 31 is threadedly connected to the inner side of the cylinder 1. An inclined block 32 is fixedly connected to the bottom end of the screw 31. A limit rod 33 is fixedly connected to the inner wall of the third movable groove 3. A moving block 34 is movably connected to the inner side of the third movable groove 3. A positioning pin 35 is fixedly connected to the surface of the moving block 34. A second spring 36 is fixedly connected to the surface of the moving block 34. By rotating the screw 31, the inclined block 32 can move downward and squeeze the moving block 34. Then, the moving block 34 drives the positioning pin 35 to move in the third movable groove 3, so that the positioning pin 35 can move from the third movable groove 3 and be driven into the wall, making the placement of the cylinder 1 more stable.

[0027] Furthermore, the inclined block 32, the moving block 34, and the positioning pin 35 are all movable inside the third movable groove 3. The inclined block 32 and the limiting rod 33 are movably connected. By setting the limiting rod 33, the inclined block 32 can be limited, so that the inclined block 32 can move vertically stably in the third movable groove 3 under the action of the screw 31.

[0028] Furthermore, one end of the second spring 36 is fixedly connected to the third movable groove 3, and the other end of the positioning pin 35 is fixedly connected to the moving block 34. By setting the second spring 36, the moving block 34 can be reset, so that when the inclined block 32 does not squeeze the moving block 34, the moving block 34 and the positioning pin 35 can be retracted into the third movable groove 3, which makes it easier to put the cylinder 1 into the rupture hole.

[0029] Working principle: During use, when blasting occurs, the baffle 23 and rubber pad 24 prevent the impact generated by the blast from directly acting on the cylinder 1 and being directly transmitted to the borehole wall. The elastic properties of the first spring 21 can absorb the instantaneous impact energy generated by the explosion. The damping element 25 provides greater resistance and can quickly suppress the reciprocating motion of the first spring 21, which facilitates the continuous dissipation of vibration energy. Through the cooperation of the first spring 21 and the damping element 25, the direct action of the explosion shock wave on the borehole wall can be buffered, which can reduce the lateral vibration intensity and reduce the transmission of energy to the surrounding structure.

[0030] By rotating the screw 31, the inclined block 32 can be limited by the limiting rod 33. Under the action of the screw 31, it moves vertically in the third movable groove 3 and moves on the surface of the limiting rod 33. The downward movement of the inclined block 32 causes the moving block 34 to be squeezed, and then the moving block 34 drives the positioning pin 35 to move, so that the positioning pin 35 extends out of the third movable groove 3 and is driven into the hole wall. At this time, the second spring 36 is in a contracted state, which can ensure the stability of the cylinder 1.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A damping device for deep hole blasting, comprising a cylinder (1); characterized in that The inner side of the cylinder (1) is provided with a damping mechanism, the damping mechanism comprises a first movable slot (2), the first movable slot (2) is opened in the inner side of the cylinder (1), the inner wall of the first movable slot (2) is fixedly connected with a first spring (21), the surface of the first spring (21) is fixedly connected with a movable rod (22), the surface of the movable rod (22) is fixedly connected with a baffle (23), one end of the baffle (23) away from the movable rod (22) is fixedly connected with a rubber pad (24), the inner wall of the first movable slot (2) is fixedly connected with a damping piece (25), the inner side of the movable rod (22) is provided with a second movable slot (26).

2. A vibration reduction device for deep hole blasting according to claim 1, characterized in that: The first movable slot (2) is opened in the inner side of the cylinder (1) in twelve groups, one end of the first spring (21) is fixedly connected with the first movable slot (2), the other end of the first spring (21) is fixedly connected with the movable rod (22).

3. The vibration reduction device for deep hole blasting of claim 1, wherein: The movable rod (22) moves in the inner side of the first movable slot (2), the two ends of the damping piece (25) are connected with the first movable slot (2) and the second movable slot (26) respectively.

4. The vibration reduction device for deep hole blasting of claim 1, wherein: The inner side of the cylinder (1) is provided with a stabilizing mechanism, the stabilizing mechanism comprises a third movable slot (3), the third movable slot (3) is opened in the inner side of the cylinder (1), the inner side of the cylinder (1) is threadedly connected with a screw rod (31), the bottom end of the screw rod (31) is fixedly connected with an inclined block (32), the inner wall of the third movable slot (3) is fixedly connected with a limiting rod (33), the inner side of the third movable slot (3) is movably connected with a moving block (34), the surface of the moving block (34) is fixedly connected with a positioning nail (35), the surface of the moving block (34) is fixedly connected with a second spring (36).

5. A vibration reduction device for deep hole blasting according to claim 4, characterised in that: The inclined block (32), the moving block (34) and the positioning nail (35) all move in the inner side of the third movable slot (3), the inclined block (32) and the limiting rod (33) are movably connected.

6. A vibration reduction device for deep hole blasting according to claim 4, wherein: One end of the second spring (36) is fixedly connected with the third movable slot (3), the other end of the positioning nail (35) is fixedly connected with the moving block (34).

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