Intelligent tunnel blasting mechanical arm
The design of an intelligent tunnel blasting robotic arm has solved the safety problems of manual drilling and explosive handling in tunnel blasting, realizing automated drilling and explosive delivery, and improving the safety and stability of tunnel construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE 3RD ENG CO LTD OF CHINA RAILWAY 18TH BUREAU GRP
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-19
AI Technical Summary
Manual drilling during tunnel blasting leads to dust pollution and safety hazards, and the explosives are highly dangerous, making manual operation prone to accidents.
Design an intelligent tunnel blasting robotic arm that utilizes components such as a steering motor, adjustment motor, drive motor, electric push rod, piston block, electromagnetic block, and protective metal plate to achieve automatic adjustment of the drilling machine and remote delivery of explosives. Combined with camera monitoring and transparent protective plate protection, it ensures operational safety.
It automates drilling and explosive placement, reduces dust exposure and operational errors, improves work safety and equipment stability, and ensures efficient blasting operations under remote control.
Smart Images

Figure CN224255333U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of robotic arm technology, specifically to an intelligent tunnel blasting robotic arm. Background Technology
[0002] Tunnels are key and critical projects in the construction of highways and railways. With the development of railway construction and the advancement of technology, tunnel excavation methods have developed rapidly. Commonly used excavation methods include drill-and-blast method, shield tunneling method, and tunnel boring machine method. Because the drill-and-blast method is highly adaptable to geological conditions and has low excavation costs, it is particularly suitable for the construction of tunnels in hard rock, broken rock, and a large number of short tunnels. Therefore, the drill-and-blast method is still the commonly used tunnel excavation method at home and abroad.
[0003] However, current tunnel blasting methods involve manual drilling and placement of explosives. The drilling process generates a lot of dust, which can be harmful if inhaled. Explosives are hazardous materials, and manual operation is prone to accidents, resulting in low safety. Therefore, this invention provides an intelligent tunnel blasting robotic arm to meet people's needs. Utility Model Content
[0004] This utility model provides an intelligent tunnel blasting robotic arm, which can effectively solve the problems mentioned in the background art of tunnel blasting, such as manual drilling and placement of explosives, which result in a large amount of dust during drilling, which can be easily inhaled and cause harm to the body, and the fact that explosives are dangerous materials, and manual operation is prone to accidents and has low operational safety.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent tunnel blasting robotic arm, comprising a movable base, a steering motor fixedly installed at the middle of the top of the movable base, a support arm fixedly connected to the output shaft of the steering motor, a fixed seat fixedly installed at the top of the support arm, an adjusting arm rotatably installed at the middle of the fixed seat, an adjusting motor fixedly installed at one end of the fixed seat, a mounting seat fixedly connected to the top of the adjusting arm, a drive motor fixedly installed at one end of the mounting seat, a connecting arm rotatably installed at the middle of the mounting seat, a drilling machine fixedly installed at the end of the connecting arm, a placement box fixedly installed at the bottom of the connecting arm, an electric push rod fixedly installed at one end inside the placement box, a piston block fixedly connected to one end of the electric push rod, explosives placed inside the placement box at one side of the piston block, a fixed frame fixedly installed at the end of the placement box, a crossbar fixedly installed at the top of the fixed frame, an electromagnetic block fixedly installed at the middle of the bottom end of the crossbar, and a protective metal plate movably installed at the middle of the fixed frame;
[0006] A support base is fixedly installed at the middle of the top of the connecting arm. A fixed box is fixedly installed at one end of the support base. A camera is fixedly installed inside the fixed box. A transparent protective plate is embedded at one end of the fixed box. A drive motor is fixedly installed at the top of the fixed box. A cleaning strip is fixedly connected to the output shaft of the drive motor.
[0007] Preferably, the output shaft of the adjusting motor is connected to one end of the bottom of the adjusting arm, and the output shaft of the drive motor is connected to one end of the connecting arm.
[0008] Preferably, the protective metal plate covers the end face of the placement box, and the two sides of the protective metal plate are respectively movably engaged with the two inner walls of the fixed frame.
[0009] Preferably, the transparent protective plate covers one side of the camera, and a brush is installed inside the cleaning strip, with the brush in close contact with the surface of the transparent protective plate.
[0010] Preferably, mounting boxes are symmetrically fixedly installed at both ends of the bottom of the movable seat, and hydraulic telescopic rods are symmetrically fixedly installed inside the mounting boxes, with support plates fixedly connected to the bottom ends of the hydraulic telescopic rods.
[0011] Preferably, an anti-slip pad is fixedly bonded to the bottom end of the support strip, and the edge of the support strip is in contact with the inner wall of the mounting box.
[0012] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.
[0013] 1. Equipped with a steering motor, adjusting motor, drive motor, electric push rod, piston block, fixing frame, electromagnetic block, and protective metal plate, the drilling machine's position can be easily adjusted through the coordinated use of the steering motor, adjusting motor, and drive motor, allowing it to be aligned with the drilling and blasting locations within the tunnel. The drilling machine is easy to operate, with a robotic arm replacing manual labor for greater convenience. Simultaneously, the electric push rod and piston block work together to push the explosives into the drilled blasting holes, eliminating the need for manual operation. Remote control by staff using the robotic arm for drilling and explosive placement improves safety, preventing dust accumulation during drilling and minimizing errors during explosive handling. The electromagnetic block secures the protective metal plate, sealing one end of the placement box and preventing the explosives from slipping during drilling and direction adjustments.
[0014] 2. Equipped with a fixed box, camera, transparent protective plate, drive motor, and cleaning strip, the camera monitors the drilling and explosive placement process, allowing staff to remotely monitor the on-site operations. The fixed box and transparent protective plate work together to seal and protect the camera without affecting its normal image acquisition. The drive motor rotates the cleaning strip against the transparent protective plate, keeping it clean and preventing dust from adhering to the protective plate during drilling and other operations, thus ensuring accurate image capture.
[0015] 3. It is equipped with a mounting box, hydraulic telescopic rod, and support plate. The combined use of the hydraulic telescopic rod and support plate provides support and stability to the entire equipment during drilling operations, increasing the stability of the equipment and preventing the equipment from shaking due to the impact and vibration generated during drilling, thus affecting normal drilling. Attached Figure Description
[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0017] In the attached diagram:
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the installation structure of the support strip plate of this utility model;
[0020] Figure 3 This is a schematic diagram of the installation structure of the piston block of this utility model;
[0021] Figure 4 This is a schematic diagram of the installation structure of the camera of this utility model;
[0022] The following are the labeling elements in the diagram: 1. Moving seat; 2. Steering motor; 3. Support arm; 4. Fixed seat; 5. Adjusting arm; 6. Adjusting motor; 7. Mounting seat; 8. Drive motor; 9. Connecting arm; 10. Drilling machine; 11. Placement box; 12. Electric push rod; 13. Piston block; 14. Explosive; 15. Fixed frame; 16. Crossbar; 17. Electromagnetic block; 18. Protective metal plate; 19. Support seat; 20. Fixed box; 21. Camera; 22. Transparent protective plate; 23. Drive motor; 24. Cleaning strip; 25. Mounting box; 26. Hydraulic telescopic rod; 27. Support strip. Detailed Implementation
[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0024] Example: Figure 1-4 As shown, this utility model provides a technical solution: an intelligent tunnel blasting robotic arm, including a movable base 1. A steering motor 2 is fixedly installed at the middle of the top of the movable base 1. A support arm 3 is fixedly connected to the output shaft of the steering motor 2. A fixed base 4 is fixedly installed at the top of the support arm 3. An adjusting arm 5 is rotatably installed at the middle of the fixed base 4. An adjusting motor 6 is fixedly installed at one end of the fixed base 4. A mounting base 7 is fixedly connected to the top of the adjusting arm 5. A drive motor 8 is fixedly installed at one end of the mounting base 7. A connecting arm 9 is rotatably installed at the middle of the mounting base 7. The output shaft of motor 6 is connected to one end of the bottom of the adjusting arm 5, and the output shaft of the drive motor 8 is connected to one end of the connecting arm 9. A drilling machine 10 is fixedly installed at the end of the connecting arm 9, and a placement box 11 is fixedly installed at the bottom of the connecting arm 9. An electric push rod 12 is fixedly installed at one end inside the placement box 11, and a piston block 13 is fixedly connected to one end of the electric push rod 12. Explosive 14 is placed inside the placement box 11 at one side of the piston block 13. A fixing frame 15 is fixedly installed at the end of the placement box 11, and a crossbar 16 is fixedly installed at the top of the fixing frame 15. An electromagnetic block 17 is fixedly installed at the middle of the bottom end of the crossbar 16, and a protective metal plate 18 is movably installed at the middle of the fixed frame 15. The protective metal plate 18 covers the end face of the placement box 11, and the two sides of the protective metal plate 18 are respectively movably engaged with the two inner walls of the fixed frame 15. Through the coordinated use of the steering motor 2, the adjusting motor 6, and the drive motor 8, the position of the drilling machine 10 can be easily adjusted so that it can be aligned with the location in the tunnel where drilling and blasting are required. The operation of the drilling machine 10 is simple, and the use of a robotic arm can replace manual operation, making it more convenient. The electric push rod 12 and piston block 13 work together to push the explosive charge 14 into the drilled blasting hole. No manual operation is required. The staff can remotely control the operation and use the robotic arm to drill and place the explosive charge, which improves the safety of the work and prevents the accumulation of a lot of dust during drilling and the occurrence of errors when handling the explosive charge. The electromagnetic block 17 is used to attract and fix the protective metal plate 18, so that the protective metal plate 18 covers and seals one end of the placement box 11 to prevent the explosive charge 14 from slipping when drilling and adjusting the direction.
[0025] A support base 19 is fixedly installed at the middle of the top of the connecting arm 9. A fixed box 20 is fixedly installed at one end of the support base 19. A camera 21 is fixedly installed inside the fixed box 20. A transparent protective plate 22 is embedded at one end of the fixed box 20. A drive motor 23 is fixedly installed at the top of the fixed box 20. A cleaning strip 24 is fixedly connected to the output shaft of the drive motor 23. The transparent protective plate 22 covers one side of the camera 21. A brush is installed inside the cleaning strip 24 and is in close contact with the surface of the transparent protective plate 22. The camera 21 is used to clean the drilled hole. The process of placing explosives is monitored, allowing staff to remotely monitor the on-site operations. The combination of the fixed box 20 and the transparent protective plate 22 provides a sealed protection for the camera 21 without affecting its normal video recording. The drive motor 23 can rotate the cleaning strip 24 close to the transparent protective plate 22, cleaning the transparent protective plate 22 and keeping it clean. This prevents dust from adhering to the transparent protective plate 22 during drilling and other operations, which could prevent the camera 21 from accurately capturing information.
[0026] Mounting boxes 25 are symmetrically fixed at both ends of the bottom of the mobile base 1. Hydraulic telescopic rods 26 are symmetrically fixed inside the mounting boxes 25. Support plates 27 are fixedly connected to the bottom end of the hydraulic telescopic rods 26. Anti-slip pads are fixedly bonded to the bottom end of the support plates 27. The edges of the support plates 27 are in contact with the inner wall of the mounting boxes 25. Through the cooperation of the hydraulic telescopic rods 26 and the support plates 27, the equipment is stabilized during drilling operations, which increases the stability of the equipment and prevents the equipment from shaking due to the impact and vibration generated during drilling, thereby affecting normal drilling.
[0027] The working principle and usage process of this utility model are as follows: First, the staff inserts the explosive 14 into the placement box 11 in advance. Then, the electromagnetic block 17 is energized to give it a certain magnetic attraction force, pushing the protective metal plate 18 upward so that it adheres to the end of the placement box 11 and the top adheres to the electromagnetic block 17, being magnetically attracted by it. This limits the explosive 14, preventing it from shaking or falling off inside the placement box 11. Then, the staff controls the equipment to move forward into the tunnel and find the predetermined explosion location. The steering motor 2, adjusting motor 6, and drive motor 8 are rotated to adjust the positions of the support arm 3, adjusting arm 5, and connecting arm 9, so that the drilling machine 10 is aligned with the predetermined explosion location. The hydraulic telescopic rod 26 is controlled to extend downward, pushing the support plate 27 to the ground, which provides support and stability for the equipment. The drilling machine 10 is remotely controlled to drill a hole for the explosive.
[0028] After drilling is completed, the drilling machine 10 moves away from the explosive hole. The adjusting motor 6 and the drive motor 8 drive the adjusting arm 5 and the connecting arm 9 to rotate, adjusting the position of the placement box 11 so that the end of the placement box 11 is aligned with the drilled explosive hole. The electromagnetic block 17 is de-energized, so that it loses its magnetic adsorption ability. The protective metal plate 18 falls naturally along the fixed frame 15, exposing the end of the placement box 11. The electric push rod 12 extends forward, and the piston block 13 pushes the explosive 14 out of the placement box 11 and into the aligned explosive hole. Afterwards, the staff can remotely control the explosive 14 to detonate, making the operation safer and more convenient.
[0029] During the drilling and explosive delivery processes, camera 21 captures and transmits the footage, allowing staff to remotely monitor the progress. The transparent protective plate 22 protects camera 21 from direct exposure to the external environment, preventing damage. During drilling, dust is scattered, and the drive motor 23 starts, rotating the cleaning strip 24 to clean the surface of the transparent protective plate 22, removing the scattered and adhered dust, allowing camera 21 to record normally.
[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An intelligent tunnel blasting robotic arm, comprising a movable base (1), characterized in that: A steering motor (2) is fixedly installed at the middle of the top of the movable seat (1). A support arm (3) is fixedly connected to the output shaft of the steering motor (2). A fixed seat (4) is fixedly installed at the top of the support arm (3). An adjusting arm (5) is rotatably installed at the middle of the fixed seat (4). An adjusting motor (6) is fixedly installed at one end of the fixed seat (4). A mounting seat (7) is fixedly connected to the top of the adjusting arm (5). A drive motor (8) is fixedly installed at one end of the mounting seat (7). A connecting arm (9) is rotatably installed at the middle of the mounting seat (7). A drilling machine (10) is fixedly installed at the end of the connecting arm (9). A placement box (11) is fixedly installed at the bottom end of the connecting arm (9). An electric push rod (12) is fixedly installed at one end inside the placement box (11). A piston block (13) is fixedly connected to one end of the electric push rod (12). Explosives (14) are placed inside the placement box (11) at one side of the piston block (13). A fixed frame (15) is fixedly installed at the end of the placement box (11). A crossbar (16) is fixedly installed at the top of the fixed frame (15). An electromagnetic block (17) is fixedly installed at the middle of the bottom end of the crossbar (16). A protective metal plate (18) is movably installed in the middle of the fixed frame (15). A support base (19) is fixedly installed at the middle of the top of the connecting arm (9). A fixed box (20) is fixedly installed at one end of the support base (19). A camera (21) is fixedly installed inside the fixed box (20). A transparent protective plate (22) is embedded at one end of the fixed box (20). A drive motor (23) is fixedly installed at the top of the fixed box (20). A cleaning strip (24) is fixedly connected to the output shaft of the drive motor (23).
2. The intelligent tunnel blasting robotic arm according to claim 1, characterized in that, The output shaft of the regulating motor (6) is connected to one end of the bottom of the regulating arm (5), and the output shaft of the drive motor (8) is connected to one end of the connecting arm (9).
3. The intelligent tunnel blasting robotic arm according to claim 1, characterized in that, The protective metal plate (18) covers the end face of the placement box (11), and the two sides of the protective metal plate (18) are respectively movably snapped into the two inner walls of the fixed frame (15).
4. The intelligent tunnel blasting robotic arm according to claim 1, characterized in that, The transparent protective plate (22) covers one side of the camera (21), and a brush is installed inside the cleaning strip (24), with the brush in close contact with the surface of the transparent protective plate (22).
5. The intelligent tunnel blasting robotic arm according to claim 1, characterized in that, The bottom of the movable seat (1) is symmetrically fixedly installed with mounting boxes (25) at both ends. Hydraulic telescopic rods (26) are symmetrically fixedly installed inside the mounting boxes (25). Support strips (27) are fixedly connected to the bottom end of the hydraulic telescopic rods (26).
6. The intelligent tunnel blasting robotic arm according to claim 5, characterized in that, The bottom end of the support strip (27) is fixedly bonded with an anti-slip pad, and the edge of the support strip (27) is in contact with the inner wall of the mounting box (25).