A blasting drilling device for tunnel blasting construction

Abstract

This utility model discloses a blasting drilling device for tunnel blasting construction, belonging to the field of tunnel blasting construction technology. It includes a blasting drilling support assembly, with the blasting drilling assembly connected to a crossbeam via a sliding hoisting assembly. The blasting drilling assembly includes a drilling motor, a spiral drill shaft connected to the output shaft of the drilling motor, and a fixed outer sleeve fitted around the tail end of the drilling motor. A fixed inner sleeve is fixedly fitted around the tail end of the drilling motor, and a second silicone damping washer is fitted around the inner sleeve. A buffer base is welded to the tail end of the drilling motor through the fixed inner sleeve and the second silicone damping washer. Multiple air springs are connected between the outer wall of the buffer base and the inner wall of the fixed outer sleeve. A protective cover is fixedly fitted around the end of the drilling motor near the spiral drill shaft. This utility model improves the consistency and accuracy of drilling by eliminating the need for manual pressure application, reducing quality fluctuations caused by human factors.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel blasting construction technology, and in particular, it is a blasting drilling device for tunnel blasting construction. Background Technology

[0002] Tunnel blasting is a widely used technique for excavating tunnels in rock or soil, primarily to overcome the challenges of difficult geological conditions. This technique breaks up rock or other obstacles by precisely controlling the placement and detonation of explosives, thereby creating a passage for tunnel excavation.

[0003] Drilling is a crucial step in tunnel blasting construction, directly impacting the effectiveness and safety of subsequent blasting operations. Traditional tunnel blasting drilling often relies on handheld or semi-automated drilling equipment. While these devices can meet drilling requirements to some extent, their flexibility and efficiency are insufficient when facing complex terrain or demanding high-precision, multi-angle drilling. Traditional tunnel blasting construction primarily uses handheld or semi-automated drilling equipment, which requires operators to maintain a specific posture for extended periods and apply sufficient force to ensure drilling depth and quality. The complex and variable tunnel environment and limited operating space further increase the operational difficulty. Utility Model Content

[0004] The purpose of this utility model is to provide a blasting drilling device for tunnel blasting construction to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blasting drilling device for tunnel blasting construction, used to install a blasting drilling assembly in a working position, wherein the blasting drilling assembly includes a drilling motor and a spiral drill shaft.

[0006] Among them, there is a blasting drilling support assembly consisting of a crossbeam frame tail end and a support column top end hinged together. The front end of the crossbeam frame is used to fix it to the rock wall, and the bottom end of the support column is used to fix it to the ground.

[0007] The crossbeam frame is used to hoist the blasting drilling components using a sliding hoisting assembly.

[0008] The lifting assembly includes a lifting ring and a slide seat integrally disposed above the lifting ring, the slide seat being movably mounted on the crossbeam frame.

[0009] The drilling motor is equipped with a fixed outer sleeve at its tail end, and the lifting ring is fixedly sleeved on the fixed outer sleeve.

[0010] A shock-absorbing buffer is installed between the tail end of the drilling motor and the fixed outer sleeve.

[0011] A splash guard is fixed at the end of the connecting shaft of the auger drill spindle near the output shaft of the drilling motor.

[0012] In this preferred embodiment, the shock-absorbing buffer component is:

[0013] It includes a fixed inner sleeve that is fixedly sleeved around the tail end of the drilling motor, and a second silicone shock-absorbing washer is sleeved around the periphery of the fixed inner sleeve. The fixed outer sleeve is fixedly sleeved around the periphery of the second silicone shock-absorbing washer.

[0014] A buffer base is welded to the end face of the drill motor tail end, and multiple air springs are connected between the outer wall of the buffer base and the inner wall of the fixed outer sleeve.

[0015] In a preferred embodiment, a first silicone shock-absorbing washer is fixedly fitted onto the outer wall of the fixed outer sleeve, and a handle is fixed to the outer wall of the tail end of the fixed outer sleeve.

[0016] In a preferred embodiment of this scheme, the sliding hoisting assembly includes a hoisting ring fixedly sleeved around the periphery of the first silicone shock-absorbing washer, a slide block integrally connected to the top of the hoisting ring, and a threaded rod rotatably connected to the crossbeam frame.

[0017] In a preferred embodiment, the crossbeam frame has a hinge notch at one end near the supporting column, and the supporting column has a hinge protrusion integrally connected to the end near the crossbeam frame. The hinge protrusion is placed in the hinge notch and hinged together by a pin.

[0018] In a preferred embodiment, the crossbeam frame has a rectangular groove on one side facing the blasting drilling assembly, the threaded rod is rotatably mounted in the rectangular groove via a bearing, and a motor mounting chamber is provided at one end of the rectangular groove and located in the crossbeam frame.

[0019] In a preferred embodiment of this design, a servo motor is fixedly installed in the motor mounting chamber, the output shaft of the servo motor is fixedly connected to one end of a threaded rod, and a junction box is provided at the tail end of the servo motor within the motor mounting chamber.

[0020] In this preferred embodiment, the slide block is a U-shaped slide block, wherein a through hole for passing through the crossbeam is provided inside, and a limiting connection kit extending into a rectangular groove and threadedly connected to the threaded rod is fixed to the bottom wall of the through hole.

[0021] In this preferred embodiment, the splash guard is:

[0022] It includes a protective cover set at one end of the drilling motor near the auger shaft, and an anti-impact propeller blade is fixed at one end of the connecting shaft of the auger shaft near the output shaft of the drilling motor, and the anti-impact propeller blade is located in the protective cover.

[0023] In this preferred embodiment, mounting ear plates are symmetrically welded to one end of the crossbeam frame away from the hinge gap, and the mounting ear plates are fixed to the tunnel wall by anchor bolts.

[0024] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0025] This blasting drilling device for tunnel blasting construction uses a sliding hoisting assembly to lift the drilling components, eliminating the need for manual handling and force application during the drilling process. This design significantly reduces the physical burden on operators, especially important during long-term operations. Furthermore, the elimination of manual pressure improves the consistency and accuracy of the drilling, reducing quality fluctuations caused by human factors.

[0026] The hinged structure between the crossbeam and the supporting columns allows for angle adjustment, enabling flexible adjustment of the drilling angle according to the specific shape of the tunnel and the requirements of the drilling location. This flexibility is achieved through the hinge notch and hinge protrusion in conjunction with the pin. This feature allows the equipment to operate on irregular surfaces or in situations requiring drilling at specific angles, improving its applicability and work efficiency, while also ensuring that drilling quality is not limited by terrain.

[0027] The second silicone damping washer and air spring are designed to absorb vibrations and protect the drilling motor. A protective cover prevents injury from flying debris, while anti-impact propeller blades redirect flying debris. These safety measures reduce the risk of accidents during operation and ensure worker safety. Effective protection also reduces the chance of equipment damage and extends its service life. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the connection structure of the lifting ring of this utility model;

[0031] Figure 3 This is a schematic diagram of the disassembled structure of the fixed outer sleeve and the fixed inner sleeve of this utility model.

[0032] Figure 4This is a schematic diagram of the installation structure of the threaded rod of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] In the diagram: 1. Blasting drill support assembly; 2. Blasting drill assembly; 3. Crossbeam frame; 4. Support column; 5. Mounting ear plate; 6. U-shaped slide; 7. Hinge notch; 8. Hinge protrusion; 9. Support base; 10. Lifting ring; 11. Spiral drill shaft; 12. Fixed outer sleeve; 13. Handle; 14. First silicone shock-absorbing washer; 15. Drilling motor; 16. Through hole; 17. Limiting connection kit; 18. Protective cover; 19. Buffer base; 20. Air spring; 21. Second silicone shock-absorbing washer; 22. Fixed inner sleeve; 23. Anti-impact propeller blade; 24. Rectangular groove; 25. Threaded rod; 26. Servo motor; 27. Motor mounting chamber; 28. Removable maintenance plate. Detailed Implementation

[0035] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0036] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0037] This embodiment provides, for example Figures 1 to 4The blasting drilling device shown includes a blasting drilling support assembly 1, which comprises a crossbeam frame 3 and a support column 4 hinged together. The end of the crossbeam frame 3 away from the support column 4 is fixed to the tunnel wall where the borehole is to be drilled, and the bottom end of the support column 4 is fixed to the ground. A blasting drilling assembly 2 is connected to the crossbeam frame 3 via a sliding hoisting assembly. The blasting drilling assembly 2 includes a drilling motor 15, a spiral drill shaft 11 connected to the output shaft of the drilling motor 15, and a fixed outer sleeve 12 sleeved around the tail end of the drilling motor 15. The sliding hoisting assembly is fixedly connected to the fixed outer sleeve 12. A fixed inner sleeve 22 is provided, and a second silicone shock-absorbing washer 21 is fitted around the fixed inner sleeve 22. A fixed outer sleeve 12 is fixedly fitted around the second silicone shock-absorbing washer 21. The tail end of the drilling motor 15 passes through the fixed inner sleeve 22 and the second silicone shock-absorbing washer 21 and is welded to a buffer base 19. Multiple air springs 20 are connected between the outer wall of the buffer base 19 and the inner wall of the fixed outer sleeve 12. A protective cover 18 is fixedly fitted around the end of the drilling motor 15 near the auger shaft 11. An anti-impact propeller blade 23 is fixed at the end of the connecting shaft of the auger shaft 11 near the output shaft of the drilling motor 15. The anti-impact propeller blade 23 is located in the protective cover 18. The design of the crossbeam frame 3 and the supporting column 4 allows the blasting drilling assembly 2 to be hoisted up for tunnel wall drilling via a sliding hoisting component, reducing manual handling. The hinged design also accommodates drilling operations at different angles. The sliding hoisting component on the crossbeam frame 3 drives the blasting drilling assembly 2 to slide, enabling the auxiliary blasting drilling assembly 2 to move forward and backward during drilling without requiring manual pressing or pulling. A second silicone shock-absorbing washer 21 is designed between the inner sleeve 22 and the outer sleeve 12 to reduce mechanical vibration. The air spring 20 is designed to reduce the impact force on the drilling motor 15 and improve the buffering effect. The protective cover 18 is designed to prevent flying debris from injuring personnel. The anti-impact propeller blade 23 rotates within the protective cover 18 along with the rotation of the auger shaft 11, allowing it to strike and deflect flying debris during rotation, causing the anti-impact propeller blade 23 to deflect the debris and drop it.

[0038] In this embodiment, a hinge notch 7 is provided at one end of the crossbeam frame 3 near the supporting column 4, and a hinge protrusion 8 is integrally connected to one end of the supporting column 4 near the crossbeam frame 3. The hinge protrusion 8 is placed in the hinge notch 7 and hinged together by a pin. This hinge structure enables a flexible connection between the two components, allowing the drilling angle to be adjusted as needed. This makes the entire device more flexible and adaptable to different terrains and drilling angle requirements, enhancing its practicality.

[0039] In this embodiment, a first silicone shock-absorbing washer 14 is fixedly sleeved on the peripheral outer wall of the fixed outer sleeve 12, and a handle 13 is fixed on the outer wall of the tail end of the fixed outer sleeve 12. The first silicone shock-absorbing washer 14 absorbs the vibration generated during drilling and protects the internal structure from damage; the handle 13 makes it convenient for the operator to control the drilling direction, improves the durability of the equipment, and increases the convenience and safety of operation.

[0040] In this embodiment, the sliding hoisting assembly includes a hoisting ring 10 fixedly sleeved around the first silicone damping washer 14, a U-shaped slide block 6 integrally connected to the top of the hoisting ring 10, and a threaded rod 25 rotatably connected to the crossbeam frame 3. The rotation of the threaded rod 25 drives the U-shaped slide block 6 to slide along the crossbeam frame 3, thereby moving the drilling assembly. This simplifies the movement of the drilling assembly and makes the operation more precise and efficient.

[0041] In this embodiment, a rectangular groove 24 is provided on one side of the crossbeam frame 3 facing the blasting drilling assembly 2, and the threaded rod 25 is rotatably installed in the rectangular groove 24 through a bearing. A motor mounting chamber 27 is provided at one end of the rectangular groove 24 and located in the crossbeam frame 3.

[0042] In this embodiment, a servo motor 26 is fixed in the motor mounting chamber 27. The output shaft of the servo motor 26 is fixedly connected to one end of the threaded rod 25. A junction box is provided at the tail end of the servo motor 26 in the motor mounting chamber 27. A removable maintenance plate 28 is installed on the outer wall of the beam frame 3 near the hinge notch 7 by screws. The maintenance port after removing the removable maintenance plate 28 extends into the motor mounting chamber 27.

[0043] In this embodiment, the interior of the U-shaped slide block 6 is provided with a through hole 16 for passing through the crossbeam frame 3. A limiting connection kit 17 extending into the rectangular groove 24 and threadedly connected to the threaded rod 25 is fixed to the bottom wall of the through hole 16. When the servo motor 26 drives the threaded rod 25 to rotate in the rectangular groove 24 in the forward or reverse direction, the threaded rod 25 drives the limiting connection kit 17 to move linearly, thereby causing the U-shaped slide block 6 to slide linearly on the crossbeam frame 3.

[0044] In this embodiment, mounting ear plates 5 are symmetrically welded to one end of the crossbeam frame 3 away from the hinge gap 7, and the mounting ear plates 5 are fixed to the tunnel wall by anchor bolts.

[0045] Working principle

[0046] The blasting drilling device for tunnel blasting construction is used to drill holes at the required locations. The support column 4 is securely installed on the ground (it can be fixed by driving anchor bolts through the support base 9). The crossbeam frame 3 is fixed to the tunnel wall by installing ear plates 5 and anchor rods. The hinge notch 7 and the hinge protrusion 8 are correctly hinged together by a pin to adjust the angle of the crossbeam frame 3 to adapt to the drilling requirements of different locations.

[0047] Assemble the drilling motor 15, auger shaft 11, fixed outer sleeve 12, fixed inner sleeve 22, second silicone shock absorber 21, buffer base 19, air spring 20, protective cover 18, and anti-impact propeller blade 23 in the blasting drilling assembly 2. Then, hoist the blasting drilling assembly 2 onto the crossbeam frame 3 using the sliding hoisting assembly, so that the sliding hoisting assembly can move freely. This includes the correct installation of components such as the hoisting ring 10, the U-shaped slide block 6, and the threaded rod 25.

[0048] Start the drilling motor 15 to drive the auger shaft 11 to rotate. Operate the servo motor 26 to drive the threaded rod 25 to rotate, causing the limit connection kit 17 to move linearly along the rectangular groove 24, thereby pushing the U-shaped slide 6 and the explosive drilling assembly 2 on it forward or backward. During drilling, the second silicone damping washer 21 and the air spring 20 reduce vibration and impact, protecting the drilling motor 15 while also improving drilling efficiency and quality. The protective cover 18 effectively prevents flying debris from injuring people, while the anti-impact propeller blades 23 can strike and change the direction of flying debris.

[0049] Based on actual drilling requirements, the angle between the crossbeam frame 3 and the support column 4 is adjusted using a hinged structure to achieve drilling operations at different angles. When maintenance of the servo motor 26 is required, the motor mounting chamber 27 can be opened by removing the removable access panel 28, facilitating inspection and maintenance of the servo motor 26.

[0050] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blasting drilling device for tunnel blasting construction, used to install a blasting drilling assembly in a working position, wherein the blasting drilling assembly includes a drilling motor (15) and a auger shaft (11); characterized in that: A blasting drilling support assembly (1) is formed by hinged connection between the tail end of a crossbeam frame (3) and the top end of a support column (4). The front end of the crossbeam frame (3) is used to fix it to the rock wall, and the bottom end of the support column (4) is used to fix it to the ground. The crossbeam frame (3) is used to hoist the blasting drilling assembly (2) using a sliding hoisting assembly; The hoisting assembly includes a hoisting ring (10) and a slide block located above the hoisting ring (10) and integrally disposed with the hoisting ring (10). The slide block is movably disposed on the crossbeam frame (3). The tail end of the drilling motor (15) is provided with a fixed outer sleeve (12), and the lifting ring (10) is fixedly sleeved on the fixed outer sleeve (12); A shock-absorbing buffer is provided between the tail end of the drilling motor (15) and the fixed outer sleeve (12); A splash guard is fixed at one end of the connecting shaft of the auger spindle (11) near the output shaft of the drilling motor (15).

2. The blasting drilling device for tunnel blasting construction according to claim 1, characterized in that: The aforementioned shock-absorbing buffer, Includes a fixed inner sleeve (22) fixedly sleeved around the tail end of the drilling motor (15), a second silicone shock-absorbing washer (21) sleeved around the fixed inner sleeve (22), and the fixed outer sleeve (12) fixedly sleeved around the second silicone shock-absorbing washer (21); A buffer base (19) is welded to the end face of the drill motor (15), and multiple air springs (20) are connected between the outer wall of the buffer base (19) and the inner wall of the fixed outer sleeve (12).

3. The blasting drilling device for tunnel blasting construction according to claim 2, characterized in that: The outer wall of the fixed outer sleeve (12) is fixedly fitted with a first silicone shock-absorbing washer (14), and the outer wall of the tail end of the fixed outer sleeve (12) is fixed with a handle (13).

4. The blasting drilling device for tunnel blasting construction according to claim 3, characterized in that: The sliding hoisting assembly includes a hoisting ring (10) fixedly sleeved around the first silicone damping washer (14), a slide block integrally connected to the top of the hoisting ring (10), and a threaded rod (25) rotatably connected to the crossbeam frame (3).

5. A blasting drilling device for tunnel blasting construction according to claim 1, characterized in that: The crossbeam frame (3) has a hinge notch (7) at one end near the support column (4), and the support column (4) has a hinge protrusion (8) integrally connected at one end near the crossbeam frame (3). The hinge protrusion (8) is placed in the hinge notch (7) and hinged together by a pin.

6. A blasting drilling device for tunnel blasting construction according to claim 5, characterized in that: The crossbeam frame (3) has a rectangular groove (24) on one side facing the blasting drilling assembly (2). The threaded rod (25) is rotatably installed in the rectangular groove (24) through a bearing. A motor mounting chamber (27) is provided at one end of the rectangular groove (24) and located in the crossbeam frame (3).

7. A blasting drilling device for tunnel blasting construction according to claim 6, characterized in that: A servo motor (26) is fixed in the motor mounting chamber (27). The output shaft of the servo motor (26) is fixedly connected to one end of the threaded rod (25). A junction box is provided at the tail end of the servo motor (26) in the motor mounting chamber (27).

8. A blasting drilling device for tunnel blasting construction according to claim 7, characterized in that: The slide is a U-shaped slide (6), in which a through hole (16) for passing through the crossbeam frame (3) is provided inside. The bottom wall of the through hole (16) is fixed with a limiting connection kit (17) that extends into the rectangular groove (24) and is threadedly connected to the threaded rod (25).

9. A blasting drilling device for tunnel blasting construction according to claim 1, characterized in that: The aforementioned splash guard, The device includes a protective cover (18) located at one end of the drilling motor (15) near the auger shaft (11), and an anti-impact propeller blade (23) is fixed at one end of the connecting shaft of the auger shaft (11) near the output shaft of the drilling motor (15), and the anti-impact propeller blade (23) is located in the protective cover (18).

10. A blasting drilling device for tunnel blasting construction according to claim 1, characterized in that: The crossbeam frame (3) has mounting ear plates (5) symmetrically welded to one end away from the hinge notch (7), and the mounting ear plates (5) are fixed to the tunnel wall by anchor rods.

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