Weak surrounding rock back break accurate control blasting device

Abstract

The utility model discloses a weak surrounding rock back break accurate control blasting device which comprises a controller body, a bottom plate is fixedly connected to the bottom of the controller body, sliding rods are fixedly connected to the surface of the bottom plate at equal intervals, air passing holes are formed in the surfaces of the sliding rods, sealing plates are fixedly connected to the tops of the sliding rods, and the sealing plates are fixedly connected to the bottom of the controller body. The upper surface of the sealing plate is fixedly connected with a tension spring, and the outer surface of the controller body is movably sleeved with a protective shell. According to the utility model, through the arrangement of the telescopic protective shell, when blasting is finished and personnel leave the controller main body, the protective shell can automatically close and wrap the controller main body, so that impact damage to equipment caused by broken stone and slag after blasting can be avoided, the protective property is enhanced, and the service life of the controller main body is prolonged; and the stability and the closing performance of the protective shell are also beneficial for improving the stability of the controller main body, and the precision and the accuracy of blasting operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a soft surrounding rock over-excavation and under-excavation precision controlled blasting device. Background Art

[0002] The precise control blasting device for over-excavation and under-excavation of soft surrounding rocks refers to the use of specific blasting devices to achieve precise control of the blasting process when blasting technology is used to carry out over-excavation and under-excavation operations in soft surrounding rocks, so as to ensure the accuracy and safety of the blasting effect. This device usually includes a blasting controller, a blasting guide tube, a blasting agent, etc. Through careful design and layout, it can control the blasting range, depth, energy release rate and other parameters to meet the specific needs of over-excavation and under-excavation operations in soft surrounding rocks. By precisely controlling the blasting device, it is possible to avoid excessive damage to the surrounding rock, reduce damage to equipment, and improve operating efficiency and safety.

[0003] After searching, the patent number is CN116696377A, and the specific name is a device and method for controlling the over-excavation angle of soft and broken surrounding rock in a tunnel, which includes a fixed connection bracket fixedly connected to a drilling rig, a sealed installation box fixedly connected to the top of the fixed connection bracket, and two fixed connection brackets are symmetrically distributed with the axis of the sealed installation box as the center;

[0004] When the control device in this patent is in use, due to the problems of the blasting environment, the crushed stone and debris after the blasting and the environment in the tunnel may cause damage to the equipment. The crushed stone and debris and debris in the environment may directly impact the surface of the equipment, causing damage or increased wear of equipment parts, affecting the normal operation and service life of the equipment. Damage to the equipment or affected accuracy will lead to reduced work efficiency, and it may be necessary to stop the operation for repair or adjustment, thereby extending the construction period or increasing additional workload. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a precise controlled blasting device for over-excavation and under-excavation in soft surrounding rock, which solves the problem that when the prior control device is in use, due to the blasting environment, the crushed stone debris after blasting and the environment in the tunnel may cause damage to the equipment, the crushed stone debris and debris in the environment may directly impact the surface of the equipment, causing damage or increased wear of equipment parts, affecting the normal operation and service life of the equipment, damage to the equipment or affected accuracy will lead to reduced work efficiency, and the operation may need to be stopped for maintenance or adjustment, thereby extending the construction period or increasing additional workload.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a precise controlled blasting device for over-excavation and under-excavation of soft surrounding rock, comprising a controller body, the bottom of the controller body is fixedly connected to a base plate, the surface of the base plate is equidistantly fixedly connected to sliding rods, the surface of the sliding rod is provided with air holes, the top of the sliding rod is fixedly connected to a sealing plate, the upper surface of the sealing plate is fixedly connected to a tension spring, the outer surface of the controller body is movably sleeved with a protective shell, the bottom of the protective shell is fixedly connected to a sealing gasket, the interior of the protective shell is provided with sliding grooves equidistantly, the outer surface of the protective shell is provided with air outlet holes, the interior of the base plate is fixedly connected to a hose, and the end of the hose away from the base plate is fixedly connected to an airbag.

[0007] Preferably, a hollow cavity is provided inside the protective shell, a threaded plate is threadedly connected to the top inner surface of the protective shell, a placement box is fixedly connected to the bottom of the threaded plate, a cover plate is threadedly installed on the bottom of the placement box, and air holes are equidistantly provided on the outer surface of the placement box.

[0008] Preferably, the interior of the sliding rod is connected to the interior of the slide groove through an air hole, and the inner top end of the slide groove is connected to the outside of the protective shell through an air outlet hole.

[0009] Preferably, the top of the tension spring is fixedly connected to the inner top of the slide groove, a sealing ring is fixedly installed on the outer surface of the sealing plate, and the outer surface of the sealing plate is sealingly slidably connected to the inside of the slide groove.

[0010] Preferably, the interior of the sliding rod is connected to the interior of the airbag through a hose, and the sealing pad is a silicone plate.

[0011] Preferably, the interior of the hollow cavity is in a vacuum state, and the interior of the placement box is filled with a desiccant.

[0012] Beneficial Effects

[0013] The utility model provides a device for precisely controlling over-excavation and under-excavation of soft surrounding rocks. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The soft surrounding rock over-excavation and under-excavation precise control blasting device is equipped with a retractable protective shell. When the blasting is over and the personnel leave the controller body, the protective shell will automatically close and wrap the controller body, which can avoid the impact damage to the equipment caused by broken stones and slag after blasting, strengthen the protection, and extend the service life of the controller body. The stability and closure of the protective shell also help to improve the stability of the controller body and improve the precision and accuracy of the blasting operation.

[0015] 2. The soft surrounding rock over-excavation and under-excavation precise control blasting device is provided with a hollow cavity and a placement box. When the protective shell protects the controller body, the interior of the protective shell can be kept in a dry, heat-insulating and waterproof environment, further extending the service life of the controller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the connection between the sliding rod and the sealing plate in the utility model;

[0018] Figure 3 It is a top view of the protective shell in the utility model;

[0019] Figure 4 It is a cross-sectional view of the protective shell in the utility model.

[0020] In the figure: 1. controller body; 2. bottom plate; 3. sliding rod; 4. air hole; 5. sealing plate; 6. tension spring; 7. protective shell; 8. sealing gasket; 9. slide groove; 10. air outlet; 11. hose; 12. air bag; 13. hollow cavity; 14. threaded plate; 15. placement box; 16. air vent; 17. cover plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a technical solution: a device for precisely controlling over-excavation and under-excavation of soft surrounding rock, comprising a controller body 1, a bottom plate 2 is fixedly connected to the bottom of the controller body 1, a sliding rod 3 is fixedly connected to the surface of the bottom plate 2 at equal intervals, an air hole 4 is provided on the surface of the sliding rod 3, a sealing plate 5 is fixedly connected to the top of the sliding rod 3, a tension spring 6 is fixedly connected to the upper surface of the sealing plate 5, a protective shell 7 is movably sleeved on the outer surface of the controller body 1, a sealing gasket 8 is fixedly connected to the bottom of the protective shell 7, the sealing gasket 8 is a silicone plate, and slide grooves 9 are equidistantly provided inside the protective shell 7, the top of the tension spring 6 is fixedly connected to the inner top of the slide groove 9, a sealing ring is fixedly installed on the outer surface of the sealing plate 5, the outer surface of the sealing plate 5 is sealingly slidably connected to the inside of the slide groove 9, and the inside of the sliding rod 3 is connected by a sealing ring. The air hole 4 is connected with the interior of the chute 9, and an air outlet hole 10 is provided on the outer surface of the protective shell 7. The inner top of the chute 9 is connected with the outside of the protective shell 7 through the air outlet hole 10. The interior of the bottom plate 2 is fixedly connected with a hose 11, and the end of the hose 11 away from the bottom plate 2 is fixedly connected with an air bag 12. The interior of the sliding rod 3 is connected with the interior of the air bag 12 through the hose 11. By setting a retractable protective shell 7, when the blasting is over and the personnel leave the controller body 1, the protective shell 7 will automatically close and wrap the controller body 1, which can avoid the impact damage to the equipment caused by the broken stones and slag after the blasting, strengthen the protection, and extend the service life of the controller body 1. The stability and closure of the protective shell 7 also help to improve the stability of the controller body 1 and improve the precision and accuracy of the blasting operation.

[0023] A hollow cavity 13 is provided inside the protective shell 7, and the interior of the hollow cavity 13 is in a vacuum state. A threaded plate 14 is threadedly connected to the top of the interior of the protective shell 7, and a placement box 15 is fixedly connected to the bottom of the threaded plate 14. The interior of the placement box 15 is filled with a desiccant, and a cover plate 17 is threadedly installed on the bottom of the placement box 15. Air holes 16 are equidistantly provided on the outer surface of the placement box 15. By providing the hollow cavity 13 and the placement box 15, when the protective shell 7 protects the controller body 1, the interior of the protective shell 7 can be kept in a dry, heat-insulating and waterproof environment, thereby further extending the service life of the controller body 1.

[0024] During operation, the controller body 1 is placed in the specified position, and the operator steps on the airbag 12. At this time, the air inside the airbag 12 enters the sliding rod 3 through the hose 11, and then enters the slide groove 9 through the air hole 4. At this time, the protective shell 7 slides upward to expose the controller body 1. At this time, the staff can realize the blasting operation by manipulating the controller body 1. When the blasting is completed, for safety reasons, the staff needs to leave the controller body 1 to find cover to avoid debris falling at any time. When leaving the controller body 1, the airbag 12 is not subjected to pressure. The tension of the tension spring 6 makes the protective shell 7 slide downward. The protective shell 7 will automatically close and wrap the controller body 1, which can avoid the impact damage of gravel and slag on the equipment after blasting, enhance the protection, and extend the service life of the controller body 1. The stability and closure of the protective shell 7 also help to improve the stability of the controller body 1 and improve the precision and accuracy of the blasting operation.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A device for precisely controlling over-excavation and under-excavation of soft surrounding rock, comprising a controller body (1), characterized in that: The bottom of the controller body (1) is fixedly connected to a base plate (2), the surface of the base plate (2) is equidistantly fixedly connected to a sliding rod (3), the surface of the sliding rod (3) is provided with an air hole (4), the top of the sliding rod (3) is fixedly connected to a sealing plate (5), the upper surface of the sealing plate (5) is fixedly connected to a tension spring (6), the outer surface of the controller body (1) is movably sleeved with a protective shell (7), the bottom of the protective shell (7) is fixedly connected to a sealing gasket (8), the interior of the protective shell (7) is provided with sliding grooves (9) equidistantly, the outer surface of the protective shell (7) is provided with an air outlet hole (10), the interior of the base plate (2) is fixedly connected to a hose (11), and the end of the hose (11) away from the base plate (2) is fixedly connected to an air bag (12).

2. The device for over-excavation and under-excavation precise controlled blasting of soft surrounding rock according to claim 1, characterized in that: The protective shell (7) has a hollow cavity (13) formed inside, the top of the inner part of the protective shell (7) is threadedly connected to a threaded plate (14), the bottom of the threaded plate (14) is fixedly connected to a placement box (15), the bottom of the placement box (15) is threadedly mounted with a cover plate (17), and the outer surface of the placement box (15) is equidistantly provided with air holes (16).

3. The device for over-excavation and under-excavation precise controlled blasting of soft surrounding rock according to claim 1, characterized in that: The interior of the sliding rod (3) is connected to the interior of the slide groove (9) through the air hole (4), and the internal top end of the slide groove (9) is connected to the outside of the protective shell (7) through the air outlet hole (10).

4. The device for over-excavation and under-excavation precise controlled blasting of soft surrounding rock according to claim 1, characterized in that: The top of the tension spring (6) is fixedly connected to the inner top of the slide groove (9), and a sealing ring is fixedly installed on the outer surface of the sealing plate (5). The outer surface of the sealing plate (5) is sealingly slidably connected to the inside of the slide groove (9).

5. The over-excavation and under-excavation precise controlled blasting device for soft surrounding rock according to claim 1 is characterized by: The interior of the sliding rod (3) is connected to the interior of the airbag (12) via a hose (11), and the sealing pad (8) is a silica gel plate.

6. The over-excavation and under-excavation precise controlled blasting device for soft surrounding rock according to claim 2 is characterized by: The interior of the hollow cavity (13) is in a vacuum state, and the interior of the placement box (15) is filled with a desiccant.

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