An inflatable segmented variable diameter charge device in a blast hole

Abstract

The utility model discloses an inflatable hole internal segmented variable diameter charging device relates to strip mine blasting device technical field, including bottom plate and gas jar, bottom plate: top surface is equipped with the folding unit, the inside mounting of folding unit has the scale sling, the bottom of scale sling is connected with the middle part of fixed base top surface, the fixed base bottom surface's installation slot is connected with the installation block correspondingly, the bottom of installation block is connected with the one side of annular gasbag top surface, the surface of annular gasbag is equipped with the placement groove, the gas jar is connected in the inside of placement groove, this inflatable hole internal segmented variable diameter charging device, the inflation of annular gasbag realizes the dynamic regulation of charging diameter, can accurate matching blasthole different section's rock mass characteristic, optimizes the distribution of blasting energy, adopts gas pressure sensor and laser ranging sensor, realizes the real -time monitoring and automatic regulation of charging depth and pressure to reduce the error.

Description

Technical Field

[0001] This utility model relates to the field of open-pit blasting device technology, specifically to an inflatable blast hole segmented variable diameter charging device. Background Technology

[0002] In blasting engineering, the charge structure inside the blast hole directly affects the blasting effect and energy utilization rate. In open-pit mining, it is common to encounter changes in rock occurrence conditions, with rock strata exhibiting soft and hard stratification or interlayering. Traditional bulk explosive coupled charging mode cannot take into account the changes in lithology and hardness within the rock strata. Using the same linear charge density ultimately leads to excessive fragmentation of soft rock and the formation of explosive energy release points. Most of the explosive energy in the blast hole is released from the soft rock, significantly reducing the ability to break up hard rock and resulting in the problem of excessively large fragments after blasting. Existing segmented charging technology suffers from drawbacks such as complex operation, inaccurate positioning, and poor sealing, and lacks real-time monitoring and adjustment capabilities. To address these issues, we propose an inflatable segmented variable diameter charging device for boreholes. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an inflatable segmented variable diameter charging device for boreholes. The inflation and expansion of the annular air bladder realizes the dynamic adjustment of the charging diameter, which can accurately match the rock mass characteristics of different sections of the borehole and optimize the blasting energy distribution. By using a gas pressure sensor and a laser rangefinder, the charging depth and pressure can be monitored and automatically adjusted in real time to reduce errors, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an inflatable segmented variable diameter charging device for boreholes, comprising a base plate and a gas tank; Base plate: The top surface is provided with a retraction unit, and a graduated suspension rope is installed inside the retraction unit. The bottom end of the graduated suspension rope is connected to the middle of the top surface of the fixed base. The mounting groove on the bottom surface of the fixed base is inserted into the mounting block. The bottom end of the mounting block is connected to one side of the top surface of the annular airbag. The surface of the annular airbag is provided with a placement groove. The gas tank is snapped into the inside of the placement groove. The gas tank's outlet pipe and the annular airbag's inlet pipe are respectively connected to both sides of the valve. The side of the fixed base is provided with a release unit. It also includes a controller, which is fixed to the top surface of the base plate, and the input terminal of the controller is electrically connected to the output terminal of an external power supply.

[0005] Open the valve to slowly inject gas from the gas canister into the annular gasbag. Use a graduated rope to place the annular gasbag into the borehole and let it stand until it is fully inflated and stuck against the inner wall of the borehole. Then proceed with loading and packing the propellant.

[0006] Furthermore, the take-up and unwind unit includes a take-up roller, a bracket, a motor, a pointer slot, a cover plate, a rope pulley, a frame, and lighting fixtures. The bracket is fixed to the top surface of the base plate, and the take-up roller is rotatably connected inside the bracket. A motor is located on the front side of the bracket, and the output shaft of the motor is connected to the front end of the take-up roller. The outer side of the take-up roller is connected to the top of the graduated rope. The frame is fixed to the left side of the top surface of the base plate, and a rope pulley is rotatably installed inside the frame. A cover plate is hinged to the top surface of the frame, and a pointer slot is provided on the surface of the cover plate. Lighting fixtures are installed on both sides of the bottom surface of the cover plate. The input terminals of the motor and the lighting fixtures are electrically connected to the output terminal of the controller. Starting the motor drives the take-up roller to take up and unwind the graduated rope. The pointer slot on the top surface of the cover plate allows personnel to easily check the length of the graduated rope. The lighting fixtures provide illumination to solve the problem of insufficient light.

[0007] Furthermore, the release unit includes an electromagnet, a fixing groove, a spring, a magnetic plate, a locking rod, and a support plate. There are two fixing grooves, which are respectively opened on the front and rear sides of the fixing base. A spring is installed inside the fixing groove. The outer end of the spring is connected to the inner side of the support plate. A locking rod is fixed to the bottom end of the inner side of the support plate. A magnetic plate is provided on the top surface of the support plate. The electromagnet is installed in the groove on the top surface of the fixing base. The input end of the electromagnet is electrically connected to the output end of the controller. When the electromagnet is de-energized, it loses its magnetism, causing the spring to extend. At this time, the locking rod leaves the locking groove on the surface of the mounting block to retract the scale rope for subsequent use.

[0008] Furthermore, it also includes a gas pressure sensor and a laser rangefinder. The gas pressure sensor is installed on the top surface of the annular airbag, and the laser rangefinder is installed on the left side of the mounting base. The output terminals of the gas pressure sensor and the laser rangefinder are electrically connected to the input terminal of the controller. The gas pressure sensor monitors the pressure of the annular airbag in real time, while the laser rangefinder can accurately measure the loading depth to prevent the annular airbag from being placed in an inaccurate position.

[0009] Furthermore, it also includes an anti-slip layer and a wear-resistant coating. The anti-slip layer is bonded to the surface of the annular airbag, and the surface of the anti-slip layer is coated with a wear-resistant coating. The anti-slip layer can enhance the friction between the annular airbag and the borehole wall and prevent displacement after loading, while the wear-resistant coating prevents wear and air leakage during the lowering of the annular airbag.

[0010] Furthermore, it also includes alarm lights. There are two alarm lights, which are fixed to the right side of the top surface of the base plate, one in front of the other. The input end of the alarm light is electrically connected to the output end of the controller. The alarm lights can flash after the annular airbag is placed to facilitate subsequent work by personnel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This inflatable borehole segmented variable diameter charging device has the following advantages: By opening the valve, gas from the gas canister is slowly injected into the annular gasbag. The annular gasbag is then placed into the borehole using a graduated rope and left to stand until it is fully inflated and secures itself to the inner wall of the borehole. Subsequently, the propellant is loaded and the gasbag is filled.

[0012] 2. The motor drives the winding roller to wind up and down the scale rope. The pointer groove on the top surface of the cover plate allows personnel to easily check the length of the scale rope. When the electromagnet is de-energized, it loses its magnetism and the spring extends. At this time, the locking rod leaves the locking groove on the surface of the mounting block to retract the scale rope for subsequent use.

[0013] 3. The pressure of the annular airbag is monitored in real time by a gas pressure sensor, while the laser rangefinder can accurately measure the loading depth to prevent the annular airbag from being placed in an inaccurate position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the detached unit structure of this utility model; Figure 3 This utility model Figure 1 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the annular airbag structure of this utility model.

[0015] In the diagram: 1. Base plate, 2. Retraction and unloading unit, 21. Retraction roller, 22. Bracket, 23. Motor, 24. Pointer slot, 25. Cover plate, 26. Rope pulley, 27. Frame, 28. Lighting, 3. Release unit, 31. Electromagnet, 32. Fixing slot, 33. Spring, 34. Magnetizing plate, 35. Locking rod, 36. Support plate, 4. Scale lifting rope, 5. Fixing seat, 6. Mounting block, 7. Annular airbag, 8. Placement slot, 9. Gas tank, 10. Valve, 11. Gas pressure sensor, 12. Laser rangefinder sensor, 13. Anti-slip layer, 14. Wear-resistant coating, 15. Alarm light, 16. Controller. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4This embodiment provides a technical solution: an inflatable borehole segmented variable diameter charging device, including a base plate 1 and a gas tank 9; Base plate 1: The top surface is provided with a take-up and release unit 2. A graduated suspension rope 4 is installed inside the take-up and release unit 2. The bottom end of the graduated suspension rope 4 is connected to the middle of the top surface of the fixed base 5. The mounting groove on the bottom surface of the fixed base 5 is inserted into the mounting block 6. The bottom end of the mounting block 6 is connected to one side of the top surface of the annular airbag 7. A placement groove 8 is opened on the surface of the annular airbag 7. The gas tank 9 is snapped into the placement groove 8. The gas outlet pipe of the gas tank 9 and the gas inlet pipe of the annular airbag 7 are respectively connected to both sides of the valve 10. The take-up and release unit 2 includes a take-up roller 21, a bracket 22, a motor 23, and a pointer groove 24. The system includes a cover plate 25, a pulley 26, a frame 27, and a lighting lamp 28. A bracket 22 is fixed to the top surface of the base plate 1. A take-up roller 21 is rotatably connected inside the bracket 22. A motor 23 is mounted on the front side of the bracket 22, and the output shaft of the motor 23 is connected to the front end of the take-up roller 21. The outer side of the take-up roller 21 is connected to the top end of the graduated hanging rope 4. The frame 27 is fixed to the left side of the top surface of the base plate 1. A pulley 26 is rotatably mounted inside the frame 27. A cover plate 25 is hinged to the top surface of the frame 27. A pointer groove 24 is formed on the surface of the cover plate 25. The bottom surfaces of the cover plate 25 are equipped with... There is a light 28, a motor 23, and the input terminal of the light 28 is electrically connected to the output terminal of the controller 16. When the motor 23 is started, it drives the take-up roller 21 to take in and out the graduated rope 4. The pointer groove 24 on the top surface of the cover plate 25 allows personnel to easily check the length of the graduated rope 4. The light 28 provides illumination to solve the problem of insufficient light. The side of the fixing base 5 is provided with a release unit 3. The release unit 3 includes an electromagnet 31, a fixing groove 32, a spring 33, a magnetic plate 34, a locking rod 35, and a support plate 36. There are two fixing grooves 32, each with a separate opening. On the front and rear sides of the fixed base 5, a spring 33 is installed inside the fixing groove 32. The outer end of the spring 33 is connected to the inner side of the support plate 36. A locking rod 35 is fixed at the bottom of the inner side of the support plate 36. A magnetic plate 34 is provided on the top surface of the support plate 36. An electromagnet 31 is installed in the groove on the top surface of the fixed base 5. The input end of the electromagnet 31 is electrically connected to the output end of the controller 16. When the electromagnet 31 is de-energized, it loses its magnetism and causes the spring 33 to extend. At this time, the locking rod 35 leaves the locking groove on the surface of the mounting block 6 to retract the scale rope 4 for subsequent use. The system includes a controller 16, which is fixed to the top surface of the base plate 1. The input of the controller 16 is electrically connected to the output of an external power supply. Valve 10 is opened to slowly inject gas from the gas tank 9 into the annular gasbag 7. The annular gasbag 7 is placed inside the borehole using a graduated suspension rope 4 and left to stand until it is fully inflated and secures itself to the inner wall of the borehole. Then, the propellant is loaded and the gasbag is filled. The system also includes a gas pressure sensor 11 and a laser rangefinder 12. The gas pressure sensor 11 is mounted on the top surface of the annular gasbag 7, and the laser rangefinder 12 is mounted on the left side of the mounting base 5. The outputs of the gas pressure sensor 11 and the laser rangefinder 12 are electrically connected to the input of the controller 16. The gas pressure sensor 11 monitors the annular gasbag 7 in real time. The pressure is controlled by a laser rangefinder 12, which can accurately measure the depth of the explosive charge to prevent inaccurate placement of the annular airbag 7. The system also includes an anti-slip layer 13 and a wear-resistant coating 14. The anti-slip layer 13 is adhered to the surface of the annular airbag 7, and the surface of the anti-slip layer 13 is coated with the wear-resistant coating 14. The anti-slip layer 13 enhances the friction between the annular airbag and the borehole wall, preventing displacement after loading. The wear-resistant coating 14 prevents wear and leakage during the lowering of the annular airbag 7. The system also includes two alarm lights 15, fixed to the right side of the top surface of the base plate 1, one in front of the other. The input of the alarm lights 15 is electrically connected to the output of the controller 16. The alarm lights 15 can flash after the annular airbag 7 is placed to facilitate subsequent work.

[0018] The working principle of the inflatable segmented variable diameter charging device for boreholes provided by this utility model is as follows: First, valve 10 is opened to slowly inject gas from gas tank 9 into the annular airbag 7. Motor 23 is started to drive take-up roller 21 to rotate and release rope pulley 26 to a suitable length. The pointer groove 24 on the top surface of cover plate 25 allows personnel to easily check the length of the scaled suspension rope 4. Illumination lamp 28 provides illumination to solve the problem of insufficient light. In conjunction with laser range sensor 12, the charging depth can be accurately measured to prevent the annular airbag 7 from malfunctioning. To address the issue of inaccurate placement, after placing the ring-shaped airbag 7 at the appropriate depth inside the borehole and allowing it to stand for a period of time, inflate it until it is secured to the inner wall of the borehole. The gas pressure sensor 11 monitors the pressure of the ring-shaped airbag 7 in real time to determine the inflation volume. When the scale rope 4 cannot be pulled upwards, it can be determined that the ring-shaped airbag 7 is installed in place. Subsequently, the loading and packing work is carried out. Finally, after the electromagnet 31 is de-energized, it loses its magnetism, causing the spring 33 to extend. At this time, the locking rod 35 leaves the locking groove on the surface of the mounting block 6 to retract the scale rope 4 for subsequent use.

[0019] It is worth noting that the controller 16 disclosed in the above embodiments is provided with buttons on its surface corresponding to the motor 23, the lighting lamp 28, the electromagnet 31, the gas pressure sensor 11, the laser rangefinder 12, and the alarm light 15. The controller 16 controls the operation of the motor 23, the lighting lamp 28, the electromagnet 31, the gas pressure sensor 11, the laser rangefinder 12, and the alarm light 15 using methods commonly used in the prior art.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pneumatic in-hole segmented variable diameter charging device, characterized in that: Includes a base plate (1) and a gas tank (9); Base plate (1): The top surface is provided with a retraction unit (2), and the retraction unit (2) is equipped with a scaled hanging rope (4). The bottom end of the scaled hanging rope (4) is connected to the middle of the top surface of the fixed base (5). The mounting groove on the bottom surface of the fixed base (5) is inserted into the mounting block (6). The bottom end of the mounting block (6) is connected to one side of the top surface of the annular airbag (7). The surface of the annular airbag (7) is provided with a placement groove (8). The gas tank (9) is snapped into the inside of the placement groove (8). The gas outlet pipe of the gas tank (9) and the gas inlet pipe of the annular airbag (7) are respectively connected to both sides of the valve (10). The side of the fixed base (5) is provided with a release unit (3). The system also includes a controller (16), which is fixed on the top surface of the base plate (1). The input terminal of the controller (16) is electrically connected to the output terminal of an external power supply.

2. The inflatable borehole segmented variable diameter charging device according to claim 1, characterized in that: The take-up and undo unit (2) includes a take-up roller (21), a bracket (22), a motor (23), a pointer slot (24), a cover plate (25), a pulley (26), a frame (27), and a lighting lamp (28). The bracket (22) is fixed to the top surface of the base plate (1). The take-up roller (21) is rotatably connected inside the bracket (22). The motor (23) is located on the front side of the bracket (22). The output shaft of the motor (23) is connected to the front end of the take-up roller (21). (21) is connected to the top of the scale rope (4) on the outside. The frame (27) is fixed on the left side of the top surface of the base plate (1). The rope wheel (26) is rotatably installed inside the frame (27). The top surface of the frame (27) is hinged with a cover plate (25). The surface of the cover plate (25) is provided with a pointer groove (24). Lighting lamps (28) are installed on both sides of the bottom surface of the cover plate (25). The input ends of the motor (23) and the lighting lamps (28) are electrically connected to the output end of the controller (16).

3. The inflatable borehole segmented variable diameter charging device according to claim 1, characterized in that: The detachment unit (3) includes an electromagnet (31), a fixing groove (32), a spring (33), a magnetic plate (34), a locking rod (35), and a support plate (36). There are two fixing grooves (32) and they are respectively opened on the front and rear sides of the fixing seat (5). A spring (33) is installed inside the fixing groove (32). The outer end of the spring (33) is connected to the inner side of the support plate (36). A locking rod (35) is fixed at the bottom of the inner side of the support plate (36). A magnetic plate (34) is provided on the top surface of the support plate (36). The electromagnet (31) is installed in the groove on the top surface of the fixing seat (5). The input end of the electromagnet (31) is electrically connected to the output end of the controller (16).

4. The inflatable borehole segmented variable diameter charging device according to claim 1, characterized in that: It also includes a gas pressure sensor (11) and a laser rangefinder (12). The gas pressure sensor (11) is installed on the top surface of the annular airbag (7), and the laser rangefinder (12) is installed on the left side of the mounting base (5). The output terminals of the gas pressure sensor (11) and the laser rangefinder (12) are electrically connected to the input terminal of the controller (16).

5. The inflatable borehole segmented variable diameter charging device according to claim 1, characterized in that: It also includes an anti-slip layer (13) and a wear-resistant coating (14), the anti-slip layer (13) being bonded to the surface of the annular airbag (7), and the surface of the anti-slip layer (13) being coated with the wear-resistant coating (14).

6. The inflatable borehole segmented variable diameter charging device according to claim 1, characterized in that: It also includes an alarm light (15), which has two lights and is fixed to the right side of the top surface of the base plate (1) in a front-to-back manner. The input end of the alarm light (15) is electrically connected to the output end of the controller (16).

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