A non-explosive blasting device and method

Abstract

This invention relates to the field of mining blasting technology, and more particularly to a non-explosive blasting device and method. The blasting structure includes blast holes drilled in the mine rock wall and a blasting device disposed in the blast holes. The blasting device includes a carbon dioxide fracturing device and an explosion-proof unit. The explosion-proof unit is disposed inside the energy release component of the carbon dioxide fracturing device and is used to release the carbon dioxide filled inside the carbon dioxide fracturing device when it is not working properly. The explosion-proof unit includes a drilling component and a drive component for driving the drilling component to drill holes in the constant pressure shear plate of the energy release component. This invention, by driving the drilling component to rotate through the drive component, can create holes in the constant pressure shear plate when the liquid carbon dioxide in the steel pipe fails to release energy properly, thereby releasing the liquid carbon dioxide in the steel pipe. This improves the safety during the recovery and inspection of the carbon dioxide fracturing device and avoids injury from sudden explosion of the carbon dioxide fracturing device.

Description

Technical Field

[0001] This invention relates to the field of mining blasting technology, specifically to a non-explosive blasting device and method. Background Technology

[0002] Mining engineering is a common science and engineering discipline, and blasting in mines is a very important subject within it. In the teaching of this discipline, carbon dioxide blasting is a commonly used mining blasting method.

[0003] The most important blasting tool in carbon dioxide blasting is the carbon dioxide fracturing device. The carbon dioxide fracturing device utilizes the physical principle that liquid carbon dioxide absorbs heat, vaporizes, expands, and its pressure rises rapidly. The carbon dioxide fracturing device consists of a steel pipe filled with liquid carbon dioxide, an activator, an energy release assembly, a gas filling assembly, an ignition circuit connection assembly, and other connecting and auxiliary components.

[0004] In actual teaching experiments, it was found that the carbon dioxide fracturing device would sometimes "fail". Further research revealed that activator failure was the main cause of the "failure" phenomenon. Specifically, poor contact or insufficient heating of the activator would prevent the carbon dioxide in the rock fracture tube from vaporizing, thus preventing the liquid carbon dioxide in the steel tube from being released through the energy release components.

[0005] If a carbon dioxide fracturing device fails to detect a misfire, it poses a significant danger if staff immediately investigate the cause. For example, if the energy release component suddenly leaks during the investigation, staff could be injured by an explosion. If the cause of the misfire is not investigated, the carbon dioxide fracturing device will remain a safety hazard and may also become unrecoverable. Summary of the Invention

[0006] The purpose of this invention is to provide a non-explosive blasting device and method to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A non-explosive blasting device includes a blast hole opened in a mine rock wall and a blasting device installed in the blast hole. The blasting device includes a carbon dioxide fracturing device and an explosion-proof unit. The explosion-proof unit is installed inside the energy release component of the carbon dioxide fracturing device and is used to release the carbon dioxide filled inside the carbon dioxide fracturing device when the carbon dioxide fracturing device is not working properly.

[0009] The explosion-proof unit includes a drilling assembly and a driving assembly for driving the drilling assembly to drill holes in the constant pressure shear plate of the energy dissipation assembly.

[0010] The explosion-proof unit also includes a transmission component, which amplifies the torque generated by the drive component through a force-saving lever.

[0011] Preferably, the transmission assembly includes a horizontal shaft that is horizontally arranged and fixed inside the energy discharge cylinder of the energy discharge assembly, and a vertical plate that is rotatably connected to the horizontal shaft and vertically arranged.

[0012] The horizontal axis divides the vertical plate into two parts: a power arm and a resistance arm. The length of the power arm is greater than the length of the resistance arm.

[0013] The drive assembly drives the bottom end of the power arm and the top end of the resistance arm to swing back and forth around the horizontal axis, and converts the back and forth swing of the top end of the resistance arm into the back and forth rotation of the drilling assembly.

[0014] Preferably, the transmission assembly further includes a turntable, a slide rail, and a meshing rack and gear ring;

[0015] The slide rail is arranged horizontally, the rack is slidably connected to the slide rail, and the gear ring is sleeved and fixed on the drilling assembly;

[0016] The turntable is driven to rotate by a drive assembly, and an eccentric shaft is fixedly connected to one end face of the turntable. The bottom end of the power arm is provided with a first waist-shaped hole along the arm length direction, and the eccentric shaft passes through the first waist-shaped hole.

[0017] A pin is fixed to one side of the rack, and a second oblong hole is provided at the top of the resistance arm along the length of the resistance arm, through which the pin passes.

[0018] Preferably, the drilling assembly includes a drill bit and an elastic support for pressing the drill bit against a constant pressure shear plate during drilling, and the gear ring is sleeved and fixed on the elastic support.

[0019] Preferably, the elastic support includes a vertically arranged rotating cylinder and a compression spring;

[0020] The top of the rotating cylinder is fixed with an annular top concentric with it, and the bottom of the rotating cylinder is fixed with a circular bottom concentric with it. The bottom of the drill bit extends through the annular top into the interior of the rotating cylinder and is fixed with a support block. The rotating cylinder has a through groove arranged along its axial direction, and the slider fixed on the support block is slidably connected inside the through groove.

[0021] The compression spring is fixed between the circular base and the support block;

[0022] The rotating cylinder is rotatably connected to the horizontal axis.

[0023] Preferably, the drill bit is held in a retracted position within the rotating cylinder by a locking mechanism;

[0024] The locking mechanism includes a locking plate that rotates horizontally via a damping shaft and a slot formed on the side of the rotating cylinder. The damping shaft is connected to a rack, and one end of the locking plate extends through the slot to the upper surface of the support block.

[0025] Preferably, the drive assembly includes a geared motor, an electromagnetic lock, a self-locking push switch, and a power supply installed inside the energy release cylinder;

[0026] The electromagnetic lock is electrically connected to the wires of the activator inside the energy dissipation component.

[0027] The button of the self-locking push switch is located directly below the bolt of the electromagnetic lock. When the electromagnetic lock is triggered, its bolt can press the button of the self-locking push switch, so that the power supply is electrically connected to the reduction motor.

[0028] Preferably, the explosion-proof unit further includes a partition component, which is used to divide the internal space of the energy release cylinder into a first chamber and a second chamber that are independent of each other, and the second chamber is connected to the bottom end of the steel pipe of the carbon dioxide fracturing device;

[0029] The drive assembly and the transmission assembly are located inside the first chamber and the second chamber, respectively;

[0030] The partition assembly includes an integrally formed first flat partition, a second flat partition, and a vertical partition;

[0031] The output shaft of the speed reduction motor rotates through the vertical partition via a mechanical seal and is fixedly connected to the turntable.

[0032] Preferably, the drive assembly further includes a vertical rod that slides through the second flat partition, and the top end of the vertical rod extends into the interior of the second chamber and is fixed with a push plate. A spring sheet is provided between the push plate and the second flat partition. A connecting piece is fixedly connected to the button of the self-locking push switch, and one end of the connecting piece extends below the bottom end of the vertical rod.

[0033] A blasting method, based on the above-mentioned non-explosive blasting device, includes the following steps:

[0034] S1. Drill holes in the area to be blasted according to actual needs to form blast holes;

[0035] S2. Place the prepared carbon dioxide fracturing device into the borehole.

[0036] S3. Power the activator from a safe distance using a wire via the detonator:

[0037] S31. If the activator does not malfunction, the activator will generate heat after being powered on, causing the liquid carbon dioxide filled in the steel pipe to expand rapidly and expand the constant pressure shear plate. Then, the expanded carbon dioxide gas will be discharged through the energy release hole on the energy release cylinder to blast the mine.

[0038] S32. If the activator malfunctions and does not generate heat or generates insufficient heat after being powered on, the liquid carbon dioxide filled in the steel pipe cannot generate enough pressure to break through the constant pressure shear plate. It is necessary to use the explosion-proof unit to release the liquid carbon dioxide in the steel pipe to prevent the carbon dioxide fracturing device from exploding during the recycling inspection process.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. This invention drives the drilling assembly to rotate via a drive component, thereby enabling the drilling assembly to create a hole in the constant pressure shear plate when the liquid carbon dioxide inside the steel pipe fails to release energy normally. This releases the liquid carbon dioxide from the steel pipe, improving safety during the recovery and inspection of the carbon dioxide fracturing device and preventing sudden explosions that could injure people. Simultaneously, the transmission component amplifies the torque generated by the drive component using a lever principle. On one hand, the torque amplification function of the drive component allows the entire explosion-proof unit to use a drive component with lower torque, reducing actual costs and minimizing the size of the drive component. On the other hand, the lever principle allows for installation of the entire explosion-proof unit with only a small axial increase in the carbon dioxide fracturing device, without causing it to thicken radially. This ensures the carbon dioxide fracturing device can still be installed into boreholes created by existing drilling equipment, offering good versatility. Furthermore, the transmission component provides a certain degree of protection for the drive component.

[0041] 2. The present invention, through the setting of a locking mechanism, utilizes the cooperation of a locking plate, a damping shaft, and an insertion slot to limit the position of the drill bit, allowing it to be housed inside the rotating cylinder. Thus, when the carbon dioxide fracturing device can detonate normally, the breakage of the constant pressure shear plate will not cause too much impact on the drill bit. At the same time, there is a certain distance between the drill bit and the constant pressure shear plate, which will not obstruct the breakage of the constant pressure shear plate, and is conducive to the smooth and rapid release of the vaporized carbon dioxide.

[0042] 3. By setting up a partition component, the internal space of the energy release cylinder can be divided into an independent first chamber and a second chamber. The drive component and the transmission component are placed inside the first chamber and the second chamber respectively. In this way, the drive component is fully protected. Even if the carbon dioxide fracturing device detonates normally, the impact force generated will not damage the drive component. The drive component can be recycled, further reducing costs. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the blasting device of the present invention installed inside the blast hole.

[0044] Figure 2 This is a schematic diagram of the overall structure of the carbon dioxide fracturing device of the present invention;

[0045] Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of the energy dissipation cylinder of the present invention;

[0046] Figure 4 This is a cross-sectional three-dimensional structural schematic diagram of the energy dissipation cylinder of the present invention;

[0047] Figure 5 This is a schematic diagram showing the positional structure of the drilling assembly and the transmission assembly of the present invention;

[0048] Figure 6 This is a schematic diagram of the explosion-proof unit of the present invention;

[0049] Figure 7 This is a schematic diagram of the transmission component of the present invention;

[0050] Figure 8 This is a side view of the separator component of the present invention.

[0051] Figure 9 This is a schematic diagram of the drilling assembly of the present invention;

[0052] Figure 10 This is a schematic diagram of the positioning mechanism of the present invention;

[0053] Figure 11 This is a cross-sectional three-dimensional structural diagram of the rotating cylinder of the present invention.

[0054] In the picture:

[0055] 10. Explosive devices;

[0056] Carbon dioxide fracturing devices include:

[0057] 11. Steel pipes;

[0058] 12. Energy release assembly; 121. Energy release cylinder; 1211. First chamber; 1212. Second chamber; 122. Energy release hole; 123. Constant pressure shear plate; 124. Bottom seal;

[0059] 13. Wire;

[0060] The explosion-proof unit includes:

[0061] 2. Drilling assembly; 21. Drill bit; 22. Elastic support seat; 221. Rotary cylinder; 222. Annular top; 223. Circular bottom; 224. Support block; 225. Compression spring; 226. Through slot; 227. Slider;

[0062] 3. Drive assembly; 31. Gear motor; 32. Electromagnetic lock; 33. Self-locking push switch; 331. Connecting piece; 34. Power supply; 35. Vertical rod; 351. Push plate;

[0063] 4. Transmission assembly; 41. Horizontal shaft; 42. Vertical plate; 421. First oblong hole; 422. Second oblong hole; 423. Power arm; 424. Resistance arm; 43. Turntable; 431. Eccentric shaft; 44. Slide rail; 45. Rack; 451. Pin; 46. Gear ring; 47. Locking mechanism; 471. Locking plate; 472. Damping shaft; 473. Insertion slot;

[0064] 5. Dividing components; 51. First flat partition; 52. Second flat partition; 53. Vertical partition;

[0065] 20. Gun holes. Detailed Implementation

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Please see Figure 1-11 The present invention provides a technical solution:

[0068] A non-explosive blasting device, such as Figure 1 As shown, it includes blast holes 20 drilled in the mine rock wall and a blasting device 10 installed in the blast holes 20. The blasting device 10 includes a carbon dioxide fracturing device and an explosion-proof unit, such as... Figure 2As shown, the carbon dioxide fracturing device includes a steel pipe 11 for storing liquid carbon dioxide and a detachable energy release assembly 12 connected to the bottom end of the steel pipe 11. Specifically, the energy release assembly 12 includes an energy release cylinder 121 coaxially arranged with the steel pipe 11 and threadedly connected to the bottom end of the steel pipe 11, and a constant pressure shear plate 123 disposed between the top end of the energy release cylinder 121 and the bottom end of the steel pipe 11. The bottom end of the energy release cylinder 121 is sealed by a bottom sealing 124, and the bottom sealing 124 is threadedly connected to the energy release cylinder 121, thereby facilitating the sealing 124. For the installation and disassembly of 24, an energy release hole 122 is provided on the side wall of the energy release cylinder 121. In actual operation, under normal circumstances, the activator installed inside the steel pipe 11 will start to heat up under the drive of the external power supply, so that the liquid carbon dioxide in the steel pipe 11 will be heated and rapidly vaporized, generating huge pressure inside the steel pipe 11. Under the action of this pressure, the constant pressure shear plate 123 will be opened, allowing the carbon dioxide gas inside the steel pipe 11 to be released through the energy release hole 122, thereby generating huge energy to blast the mine.

[0069] The above are all existing technologies, and will not be elaborated further here.

[0070] Compared with the prior art, the present invention is equipped with an explosion-proof unit, specifically, as follows: Figures 3 to 11 As shown, the explosion-proof unit is installed inside the energy release assembly 12 of the carbon dioxide fracturing device. It is used to release the carbon dioxide inside the carbon dioxide fracturing device when it is not working properly. In other words, when the activator malfunctions and the liquid carbon dioxide in the steel pipe 11 cannot be vaporized normally, the explosion-proof unit will start to work and release the liquid carbon dioxide inside the steel pipe 11. This prevents the carbon dioxide fracturing device from suddenly exploding during the recovery of the carbon dioxide fracturing device or the investigation of the reason why the carbon dioxide fracturing device failed to detonate normally, thereby improving the overall safety of use.

[0071] Furthermore, such as Figure 3 and Figure 4 As shown, the explosion-proof unit includes a drilling assembly 2 and a driving assembly 3 for driving the drilling assembly 2 to drill holes in the constant pressure shear plate 123 of the energy release assembly 12. The explosion-proof unit also includes a transmission assembly 4. The transmission assembly 4 amplifies the torque generated by the driving assembly 3 through a force-saving lever. In actual use, the driving force generated by the driving assembly 3 is amplified by the transmission assembly 4 and then transmitted to the drilling assembly 2, causing the drilling assembly 2 to rotate and thus create holes in the constant pressure shear plate 123 to release liquid carbon dioxide.

[0072] In the above scheme, the driving component 3 drives the drilling component 2 to rotate, thereby opening a hole in the constant pressure shear plate 123 when the liquid carbon dioxide in the steel pipe 11 fails to release energy normally, so as to release the liquid carbon dioxide in the steel pipe 11. This can improve the safety of the recovery and inspection of the carbon dioxide fracturing device and avoid injury from sudden explosion of the carbon dioxide fracturing device. At the same time, the transmission component 4 amplifies the torque generated by the driving component 3 by using the principle of lever saving. On the one hand, the torque amplification function of the driving component 3 allows the entire explosion-proof unit to use a driving component 3 with a smaller torque, reducing the actual cost and size of the driving component 3. On the other hand, by using the lever saving, only a small length needs to be added in the axial direction of the carbon dioxide fracturing device to complete the installation of the entire explosion-proof unit, without causing the carbon dioxide fracturing device to become thicker in the radial direction. This allows the entire carbon dioxide fracturing device to still be installed in the blast hole opened by the existing drilling equipment, which has good versatility. At the same time, the transmission component 4 transmits power and has a certain protective effect on the driving component 3.

[0073] like Figures 5 to 7 As shown, the transmission assembly 4 includes a horizontal shaft 41 that is horizontally set and fixed inside the energy discharge cylinder 121 of the energy discharge assembly 12, and a vertical plate 42 that is rotatably connected to the horizontal shaft 41 and vertically set. That is, the vertical plate 42 can rotate around the horizontal shaft 41. However, in actual use, the bottom end of the vertical plate 42 is driven by the drive assembly 3 to swing back and forth, so as to drive the top end of the vertical plate 42 to swing back and forth. Then, the back and forth swing of the top end of the vertical plate 42 is converted into back and forth linear motion, and finally the back and forth linear motion is converted into back and forth rotational motion to drive the drilling assembly 2 to rotate.

[0074] Specifically, the horizontal axis 41 divides the vertical plate 42 into two parts: the power arm 423 and the resistance arm 424. The length of the power arm 423 is greater than the length of the resistance arm 424. Thus, the drive assembly 3 drives the bottom end of the power arm 423 to swing back and forth. When the driving force of this back and forth swing is transmitted to the top end of the resistance arm 424, it will be amplified, thereby increasing the rotational torque of the drive assembly 3.

[0075] like Figures 5 to 7 As shown, the drive assembly 3 drives the bottom end of the power arm 423 and the top end of the resistance arm 424 to swing back and forth around the horizontal axis 41, and converts the back and forth swing of the top end of the resistance arm 424 into the back and forth rotation of the drilling assembly 2.

[0076] Furthermore, such as Figures 5 to 7As shown, the transmission assembly 4 also includes a turntable 43, a slide rail 44, and a meshing rack 45 and a gear ring 46. The slide rail 44 is horizontally arranged, and its end is fixedly connected to the inner wall of the energy dissipation cylinder 121. The rack 45 is slidably connected to the slide rail 44, and the gear ring 46 is sleeved and fixed on the drilling assembly 2. Thus, by simply driving the rack 45 to reciprocate, the gear ring 46 can be reciprocated, thereby driving the entire drilling assembly 2 to reciprocate, so as to provide the necessary pressure shearing for the constant pressure shear plate 1 when needed. 23 has an opening; the turntable 43 is driven to rotate by the drive assembly 3, and an eccentric shaft 431 is fixedly connected to one end face of the turntable 43. The bottom end of the power arm 423 has a first waist-shaped hole 421 arranged along the arm length direction of the power arm 423, and the eccentric shaft 431 passes through the first waist-shaped hole 421; a pin 451 is fixed on one side of the rack 45, and a second waist-shaped hole 422 arranged along the arm length direction of the resistance arm 424 is opened at the top end of the resistance arm 424, and the pin 451 passes through the second waist-shaped hole 422.

[0077] In actual use, the drive assembly 3 drives the turntable 43 to rotate, causing the eccentric shaft 431 fixed on the turntable 43 to perform circular motion. Since the eccentric shaft 431 passes through the first waist-shaped hole 421, the eccentric shaft 431 will drive the bottom end of the power arm 423 to swing back and forth during the circular motion. As a result, the top end of the resistance arm 424 will swing back and forth. Since the pin 451 passes through the second waist-shaped hole 422, the reciprocating swing of the top end of the resistance arm 424 will be converted into the reciprocating linear motion of the rack 45 on the slide rail 44. Since the rack 45 and the gear ring 46 mesh with each other, and the gear ring 46 is sleeved and fixed on the drilling assembly 2, the reciprocating linear motion of the rack 45 will be converted into the reciprocating rotational motion of the drilling assembly 2.

[0078] like Figures 9 to 11 As shown, the drilling assembly 2 includes a drill bit 21 and an elastic support 22 for pressing the drill bit 21 against the constant pressure shear plate 123 during drilling. The toothed ring 46 is sleeved and fixed on the elastic support 22.

[0079] Furthermore, such as Figures 9 to 11As shown, the elastic support 22 includes a vertically arranged rotating cylinder 221 and a compression spring 225, with the compression spring 225 disposed inside the rotating cylinder 221. An annular top 222, concentric with the top of the rotating cylinder 221, is fixed to the top, and a circular bottom 223, concentric with the bottom, is fixed to the bottom. The bottom end of the drill bit 21 extends through the annular top 222 into the interior of the rotating cylinder 221 and is fixed with a support block 224. The support block 224 can slide along the axial direction of the rotating cylinder 221 to improve the stability of the drill bit 21. This is to achieve the desired stability between the rotating cylinder 221 and the rotating cylinder 221. The drill bits 21 rotate synchronously. A through groove 226 is provided on the rotating cylinder 221 along its axial direction. The through groove 226 connects the inner cavity of the rotating cylinder 221 with the external space. The slider 227, which is fixed on the support block 224, is slidably connected inside the through groove 226. The compression spring 225 is fixed between the circular bottom 223 and the support block 224. At this time, the compression spring 225 is in a contracted state. The rotating cylinder 221 is rotatably connected to the horizontal shaft 41 through the bearing, so that the rotating cylinder 221 can only rotate around its own axis and will not move in the vertical direction.

[0080] Furthermore, such as Figure 10 and Figure 11 As shown, the drill bit 21 has an extended position extending outside the rotating cylinder 221 and a retracted position retracted inside the rotating cylinder 221. Specifically, the drill bit 21 is held in the retracted position retracted inside the rotating cylinder 221 by a locking mechanism 47, such as... Figure 10 and Figure 11 The diagrams shown are schematics of the receiving device with the drill bit 21 in the retracted position.

[0081] like Figure 10 and Figure 11 As shown, the locking mechanism 47 includes a locking plate 471 that rotates horizontally via a damping shaft 472 and a slot 473 formed on the side of the rotating cylinder 221. The damping shaft 472 is connected to the rack 45, allowing the locking plate 471 to rotate horizontally upwards and also allowing the locking plate 471 to move together with the rack 45. One end of the locking plate 471 extends through the slot 473 to the upper surface of the support block 224. At this time, the support block 224 is compressed by the pressure of the compression spring 225. Under the action of the damping shaft 472, the clamping plate 471 is pressed against the inner top wall of the slot 473. That is, the clamping plate 471 can limit the position of the support block 224, so that the drill bit 21 can remain in the retracted position inside the rotating cylinder 221 for a long time. The setting of the damping shaft 472 ensures that the clamping plate 471 will not rotate arbitrarily after it is completely withdrawn from the slot 473. That is, the damping force of the damping shaft 472 can limit the position of the clamping plate 471 and prevent it from affecting the entire drilling process when it rotates arbitrarily.

[0082] In actual use, when the rack 45 begins to move linearly, on the one hand, the rack 45 can drive the damping shaft 472 to move together, so that the end of the chuck 471 that is inserted into the rotating cylinder 221 gradually exits from the rotating cylinder 221. On the other hand, the movement of the rack 45 will also drive the rotating cylinder 221 to rotate, further accelerating the speed at which the chuck 471 exits from the rotating cylinder 221. After the chuck 471 loses its limiting effect on the support block 224, the support block 224 will quickly push the drill bit 21 upward under the elastic force of the compression spring 225 until the top of the drill bit 21 presses against the constant pressure shear plate 123. At this time, the compression spring 225 still has elastic force, which increases the friction between the drill bit 21 and the constant pressure shear plate 123. Then the drill bit 21 will follow the rotating cylinder 221 to reciprocate and rotate together, starting to drill a hole in the constant pressure shear plate 123 until the constant pressure shear plate 123 is pierced.

[0083] In the above scheme, the positioning mechanism 47, through the cooperation of the clamping plate 471, the damping shaft 472 and the slot 473, can limit the position of the drill bit 21 so that it can be housed inside the rotating cylinder 221. In this way, when the carbon dioxide fracturing device can blast normally, the breaking of the constant pressure shear plate 123 will not cause too much impact on the drill bit 21. At the same time, there is a certain distance between the drill bit 21 and the constant pressure shear plate 123, which will not obstruct the breaking of the constant pressure shear plate 123. This is conducive to the smooth and rapid release of the gasified carbon dioxide. Moreover, the overall structure is simple, small in size and low in cost.

[0084] like Figure 4 , Figure 6 and Figure 8 As shown, the drive assembly 3 includes a reduction motor 31, an electromagnetic lock 32, a self-locking push switch 33, and a power supply 34 installed inside the energy dissipation cylinder 121. The power supply 34 can be a lithium battery or the like. The electromagnetic lock 32 is electrically connected to the wire 13 that activates the activator inside the energy dissipation assembly 12. The electromagnetic lock 32 will also start when the activator is powered on. The button of the self-locking push switch 33 is located directly below the latch of the electromagnetic lock 32. After the electromagnetic lock 32 is triggered (started), the latch of the electromagnetic lock 32 can move down and press the button of the self-locking push switch 33, thereby making the power supply 34 electrically connected to the reduction motor 31. The reduction motor 31 starts to work, that is, it drives the turntable 43 to rotate at a low speed. In this embodiment, the model of the electromagnetic lock 32 can be BYP-0318.

[0085] The working principle of the self-locking push switch 33 is as follows: when the button of the self-locking push switch 33 is pressed for the first time, the switch is turned on and held, that is, it is self-locking. When the button of the self-locking push switch 33 is pressed for the second time, the switch is turned off and the switch button pops out at the same time.

[0086] like Figures 4 to 8As shown, the explosion-proof unit also includes a partition assembly 5, which is used to divide the internal space of the energy release cylinder 121 into a first chamber 1211 and a second chamber 1212 that are independent of each other. The second chamber 1212 is connected to the bottom end of the steel pipe 11 of the carbon dioxide fracturing device. The drive assembly 3 and the transmission assembly 4 are located inside the first chamber 1211 and the second chamber 1212, respectively. The partition assembly 5 includes an integrally formed first flat partition 51, a second flat partition 52 and a vertical partition 53. The output shaft of the reduction motor 31 rotates through the vertical partition 53 through a mechanical seal and is fixedly connected to the turntable 43.

[0087] By using the partition component 5, the internal space of the energy release cylinder 121 can be divided into an independent first chamber 1211 and a second chamber 1212. The drive component 3 and the transmission component 4 are placed inside the first chamber 1211 and the second chamber 1212, respectively. This achieves comprehensive protection for the drive component 3. Even if the carbon dioxide fracturing device detonates normally, the impact force it generates will not damage the drive component 3. This enables the drive component 3 to be recycled, further reducing costs.

[0088] The first flat partition 51, the second flat partition 52, and the vertical partition 53 are roughly in the shape of a "Z". This provides a mounting position for the rotary sealing connection between the reduction motor 31 and the turntable 43, and also increases the contact area between the partition assembly 5 and the inner wall of the energy release cylinder 121, thereby enhancing the impact resistance of the entire partition assembly 5.

[0089] Furthermore, to prevent the drive assembly 3 from operating even under normal detonation conditions of the carbon dioxide fracturing device, the drive assembly 3 in this embodiment also includes a vertical rod 35. The vertical rod 35 slides through the second flat partition 52, and the top end of the vertical rod 35 extends into the interior of the second chamber 1212 and is fixed with a push plate 351. A spring sheet is provided between the push plate 351 and the second flat partition 52. A connecting piece 331 is fixedly connected to the button of the self-locking push switch 33, and one end of the connecting piece 331 extends to the bottom of the vertical rod 35.

[0090] In practical use, when the carbon dioxide fracturing device detonates normally, the electrical connection between the activator and wire 13 is cut off, that is, the activator is disconnected from the external power supply used to start the activator. The latch of the electromagnetic lock 32 returns to its initial position, and the button of the self-locking push switch 33 is locked, maintaining the electrical connection between the power supply 34 and the reduction motor 31. The reduction motor 31 works normally, and the carbon dioxide gas ejected from the normal detonation of the carbon dioxide fracturing device will directly impact the push plate 351, causing the push plate 351 and the vertical rod 35 to move down instantly. This causes the vertical rod 35 to push the connecting piece 331 down, thereby pressing the button of the self-locking push switch 33 again, causing the button of the self-locking push switch 33 to pop out, cutting off the electrical connection between the power supply 34 and the reduction motor 31, that is, the reduction motor 31 stops. At this time, the drive assembly 3 will not perform drilling work.

[0091] A blasting method, comprising the above-mentioned non-explosive blasting device, the blasting method comprising the following steps:

[0092] S1. Drill holes in the area to be blasted according to actual needs to form blast holes 20;

[0093] S2. Place the prepared carbon dioxide fracturing device into the borehole 20;

[0094] S3. Power the activator from a safe distance using the detonator via wire 13:

[0095] S31. If the activator does not malfunction, the activator will generate heat after being powered on, causing the liquid carbon dioxide filled in the steel pipe 11 to expand rapidly and expand the constant pressure shear plate 123. Then, the expanded carbon dioxide gas will be discharged through the energy release hole 122 on the energy release cylinder 121 to blast the mine.

[0096] S32. If the activator malfunctions and does not generate heat or generates insufficient heat after being powered on, the liquid carbon dioxide filled in the steel pipe 11 will not be able to generate enough pressure to break through the constant pressure shear plate 123. It is necessary to use the explosion-proof unit to release the liquid carbon dioxide in the steel pipe 11 to prevent the carbon dioxide fracturing device from exploding during the recycling inspection process.

[0097] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-explosive demolition device characterized by, The non-explosive blasting device comprises a blast hole opened on a mine wall and a blasting device arranged in the blast hole, the blasting device comprises a carbon dioxide fracturing device and an explosion-proof unit, the explosion-proof unit is arranged in an energy release assembly of the carbon dioxide fracturing device, and is used for releasing carbon dioxide filled in the carbon dioxide fracturing device when the carbon dioxide fracturing device does not work normally; The explosion-proof unit comprises a drilling assembly and a driving assembly used for driving the drilling assembly to drill on a constant-pressure shear piece of the energy release assembly; The drilling assembly comprises a drill bit and an elastic support seat used for pressing the drill bit on the constant-pressure shear piece when drilling; The driving assembly comprises a speed reduction motor, an electromagnetic lock, a self-locking press switch and a power supply arranged in the energy release cylinder; The electromagnetic lock is electrically connected with a wire rod used for activating an activator in the energy release assembly; A button of the self-locking press switch is located directly below a lock tongue of the electromagnetic lock, and the lock tongue of the electromagnetic lock can press the button of the self-locking press switch after the electromagnetic lock is triggered, so that the power supply is in electrical communication with the speed reduction motor; The explosion-proof unit further comprises a transmission assembly, and the transmission assembly amplifies a torque generated by the driving assembly through a force-saving lever.

2. The non-explosive demolition charge of claim 1, wherein: The transmission assembly comprises a horizontal shaft arranged in the energy release cylinder of the energy release assembly and a vertical plate rotatably connected to the horizontal shaft and arranged vertically; The horizontal shaft divides the vertical plate into a power arm and a resistance arm, and the length of the power arm is greater than that of the resistance arm; The driving assembly drives the bottom end of the power arm and the top end of the resistance arm to swing around the horizontal shaft reciprocatingly, and converts the reciprocating swing of the top end of the resistance arm into reciprocating rotary motion of the drilling assembly.

3. The non-explosive blasting device of claim 2, wherein: The transmission assembly further comprises a rotating disc, a slide rail and a rack and pinion meshing with each other; The slide rail is horizontally arranged, the rack is slidably connected to the slide rail, and the pinion is fixedly sleeved to the drilling assembly; The rotating disc is driven to rotate by the driving assembly, one end surface of the rotating disc is fixedly connected with an eccentric shaft, the bottom end of the power arm is provided with a first waist-shaped hole arranged along the length direction of the power arm, and the eccentric shaft penetrates through the first waist-shaped hole; One side of the rack is fixedly connected with a pin shaft, the top end of the resistance arm is provided with a second waist-shaped hole arranged along the length direction of the resistance arm, and the pin shaft penetrates through the second waist-shaped hole.

4. The non-explosive demolition charge of claim 3, wherein: The pinion is fixedly sleeved to the elastic support seat.

5. The non-explosive demolition charge of claim 4, wherein: The elastic support seat comprises a rotary cylinder arranged vertically and a compression spring; The top end of the rotary cylinder is fixedly connected with an annular top concentric with the rotary cylinder, the bottom end of the rotary cylinder is fixedly connected with a circular bottom concentric with the rotary cylinder, the bottom end of the drill bit extends to the inside of the rotary cylinder through the annular top and is fixedly connected with a support block, the rotary cylinder is provided with a through groove arranged along the axial direction of the rotary cylinder, and a sliding block fixedly connected to the support block is slidably connected to the inside of the through groove; The compression spring is fixed between the circular bottom and the support block; The rotary cylinder is rotatably connected to the horizontal shaft.

6. The non-explosive demolition charge of claim 5, wherein: The drill bit is kept in a retracted position inside the rotary cylinder by a clamping mechanism; The clamping mechanism comprises a clamping plate rotatable in the horizontal direction through a damping pivot and a slot arranged on the side surface of the rotary cylinder, the damping pivot is connected to the rack, and one end of the clamping plate extends to the upper surface of the support block through the slot.

7. The non-explosive demolition charge of claim 6, wherein: The explosion-proof unit further comprises a partition assembly for partitioning the internal space of the relief cylinder into a first chamber and a second chamber independent of each other, and the second chamber is in communication with the bottom end of the steel pipe of the carbon dioxide fracturing device; The driving assembly and the transmission assembly are respectively located inside the first chamber and the second chamber; The partition assembly comprises integrally formed first and second flat partition plates and a vertical partition plate; The output shaft of the speed reducer is rotatably penetrated through the vertical partition plate via a mechanical seal and fixedly connected with the rotating disc.

8. The non-explosive demolition charge of claim 7, wherein: The driving assembly further comprises a vertical rod which is slidably penetrated through the second flat partition plate, and the top end of the vertical rod extends into the second chamber and is fixed with a push plate, a spring sheet is arranged between the push plate and the second flat partition plate, a connecting sheet is fixedly connected on the button of the self-locking press switch, and one end of the connecting sheet extends below the bottom end of the vertical rod.

9. A blasting method characterized by, The blasting method is based on the non-explosive blasting device according to any one of claims 1-8, and comprises the following steps: S1, drilling holes according to actual requirements in the area to be blasted to form blast holes; S2, placing the prepared carbon dioxide fracturing device into the blast hole; S3, using the initiator to energize the activator from a safe distance through the wire: S31, if the activator is not faulty, the activator will generate heat after being energized, causing the liquid carbon dioxide filled in the steel pipe to rapidly expand and open the pressure shear plate, and then the expanded carbon dioxide gas is discharged through the relief hole of the relief cylinder to blast the mine; S32, if the activator is faulty, the activator will not generate heat or generate insufficient heat after being energized, so that the liquid carbon dioxide filled in the steel pipe cannot generate pressure to break the pressure shear plate, and the liquid carbon dioxide in the steel pipe needs to be released by the explosion-proof unit to prevent the carbon dioxide fracturing device from exploding during the recovery inspection process.

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