A detonation device

Abstract

This invention discloses a detonation device, including a housing, a detonation mechanism located in a cavity inside the housing, and an electromagnetic drive mechanism. The detonation mechanism includes an electrically controlled ignition unit, a detonator, and a detonating charge. The electrically controlled ignition unit is used to detonate the detonator, and the detonator is used to detonate the detonating charge. The electrically controlled ignition unit and the detonating charge are fixed at a relative interval at the bottom of the cavity, forming a receiving space for accommodating the detonator. The electromagnetic drive mechanism is used to drive the detonator to slide back and forth into or out of the receiving space, so that the detonator, the electrically controlled ignition unit, and the detonating charge are in an aligned or misaligned state. By controlling the electromagnetic drive mechanism to drive the detonator to slide back and forth, the switching and locking between the safe state and the detonation state can be realized, which has high reliability and ensures the safety of blasting operations.

Description

Technical Field

[0001] This invention relates to the field of blasting engineering technology, and in particular to a detonation device. Background Technology

[0002] With the rapid development of blasting technology, tasks such as building blasting, underwater blasting, and hazardous material detonation are becoming more diversified and complex. More and more blasting devices need to have characteristics such as remote control capability, reliable operation, and high safety.

[0003] Currently, electric detonators are commonly used to detonate explosives. However, using electric detonators as the detonating end is often susceptible to interference from static electricity, radio frequency electricity, and stray currents, which can easily lead to premature detonation accidents and pose significant safety hazards. Before the detonator detonates the explosive, it must be reliably isolated from the explosive to prevent the detonator from accidentally detonating the explosive. Summary of the Invention

[0004] The purpose of this invention is to provide an initiation device that reliably isolates the detonator from the explosive before initiating the explosive, and achieves switching and locking between a safe state and an initiation state.

[0005] The present invention is achieved through the following technical solution.

[0006] A detonation device includes a housing, a detonation mechanism located in a cavity inside the housing, and an electromagnetic drive mechanism. The detonation mechanism includes an electrically controlled ignition unit, a detonator, and a detonating charge. The electrically controlled ignition unit is used to detonate the detonator, and the detonator is used to detonate the detonating charge. The electrically controlled ignition unit and the detonating charge are fixed at a relative interval at the bottom of the cavity, forming a receiving space for accommodating the detonator. The electromagnetic drive mechanism is used to drive the detonator to slide back and forth into or out of the receiving space so that the detonator, the electrically controlled ignition unit, and the detonating charge are in an aligned or misaligned state.

[0007] When the detonator, the electronic ignition unit, and the explosive charge are aligned, the electronic ignition unit can be energized to ignite the detonator, which in turn ignites the explosive charge. When the detonator, the electronic ignition unit, and the explosive charge are misaligned, the detonator is located away from the electronic ignition unit, the explosive charge, and the explosive charge, which can prevent the detonator from being accidentally ignited by the explosive charge.

[0008] As a further improvement of the present invention, the electromagnetic drive mechanism is a bidirectional holding electromagnet. The bidirectional holding electromagnet is fixed in the cavity by a mounting bracket. The bidirectional holding electromagnet is provided with a movable shaft, which passes through the bottom of the bidirectional holding electromagnet. The bidirectional holding electromagnet is used to control the movable shaft to slide up and down and to fix the movable shaft. The bottom of the movable shaft is connected to the detonator.

[0009] As a further improvement of the present invention, the electromagnetic drive mechanism is a bidirectional holding electromagnet. The bidirectional holding electromagnet is fixed in the cavity by a mounting bracket. The bidirectional holding electromagnet is provided with a movable shaft, which passes through the bottom of the bidirectional holding electromagnet. The bidirectional holding electromagnet is used to control the movable shaft to slide up and down and to fix the movable shaft. The bottom of the movable shaft is connected to the detonator.

[0010] As a further improvement of the present invention, the detonator is connected to the bottom of the movable shaft via a connecting block, the top of the connecting block is connected to the movable shaft, and the detonator is fixedly connected to the bottom of the connecting block.

[0011] As a further improvement of the present invention, the movable shaft passes through the top of the bidirectional holding electromagnet and extends outwards, the top of the movable shaft is detachably connected to a limiting plate, and the housing is detachably connected to a manual safety unit for abutting and limiting the movement against the limiting plate.

[0012] As a further improvement of the present invention, the manual safety unit is a hand-tightening screw, and the housing is provided with a mounting hole for installing the hand-tightening screw. The hand-tightening screw passes through the mounting hole into the housing and abuts against the lower surface of the limiting plate.

[0013] As a further improvement of the present invention, a detection device is provided inside the housing, which is used to detect the position of the limiting plate.

[0014] As a further improvement of the present invention, the detection device is an elastic sensor. The top of the elastic sensor is provided with a detection contact with a preset shape that can retract when squeezed. When the detonator, the electronic ignition unit, and the explosive charge are aligned, the detection contact is squeezed by the limiting plate.

[0015] As a further improvement of the present invention, a receiving box for installing the main explosive is fixedly connected to the lower part of the housing, and the main explosive is detonated when the detonating charge explodes.

[0016] As a further improvement of the present invention, the detonation device is connected to an external control box via a cable, and the operator controls the detonation of the detonation device through the control box.

[0017] The beneficial effects of this invention are:

[0018] 1. This invention provides a detonation device that drives an electromagnetic drive mechanism to move a detonator back and forth, thereby achieving the switching and locking between a safe state and a detonation state. It has high reliability and ensures the safety of blasting operations.

[0019] 2. The electromagnetic drive mechanism in this application adopts a bidirectional holding electromagnet, which can switch states simply by switching the positive and negative poles of the power supply, making it easy to operate. At the same time, the bidirectional holding electromagnet has a large holding force after power is cut off, which can lock the detonator in a certain position, ensuring high safety.

[0020] 3. This device has two safety mechanisms: a manual safety unit and a two-way holding electromagnet. Even if the two-way holding electromagnet is damaged or fails, the manual safety unit can keep the detonator away from the explosive, ensuring that the detonating device is in a safe state before detonation and guaranteeing the safety of the detonating device during transportation, assembly and deployment. Attached Figure Description

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings to aid in understanding the objectives and advantages of the present invention, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the detonation device of the present invention in a safe state;

[0023] Figure 2 This is a schematic diagram of the structure of the detonation device of the present invention in the detonation state;

[0024] In the picture:

[0025] 1. Housing; 11. Cavity; 12. Mounting hole; 2. Detonation mechanism; 21. Electrically controlled ignition unit; 22. Detonator; 23. Explosive charge; 3. Bidirectional holding electromagnet; 31. Movable shaft; 32. Connecting block; 4. Mounting bracket; 5. Limiting plate; 6. Hand screw; 7. Elastic sensor; 71. Detection contact; 8. Receptacle box; 81. Main explosive; 9. Cable. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0028] This embodiment discloses an initiation device, referring to... Figures 1-2The device includes a shell 1, with a hollow cavity 11 inside. The cavity 11 contains an ignition mechanism 2 and an electromagnetic drive mechanism. The ignition mechanism 2 includes an electronically controlled ignition unit 21, a detonator 22, and a detonating charge 23. The electronically controlled ignition unit 21 is used to ignite the detonator 22, and the detonator 22 is used to ignite the detonating charge 23. The electronically controlled ignition unit 21 and the detonating charge 23 are fixed at a relative interval at the bottom of the cavity 11, forming a receiving space for accommodating the detonator 22. The electromagnetic drive mechanism is used to drive the detonator 22 to slide back and forth into the receiving space so that the detonator 22, the electronically controlled ignition unit 21, and the detonating charge 23 are aligned, or to move out of the receiving space so that the detonator 22, the electronically controlled ignition unit 21, and the detonating charge 23 are misaligned.

[0029] When the detonator 22, the electronic ignition unit 21, and the explosive charge 23 are facing each other, the detonator 22 enters the containment space formed by the electronic ignition unit 21 and the explosive charge 23 and is locked in place. One end of the detonator 22 is close to the electronic ignition unit 21 and the other end is close to the explosive charge 23, which is the detonation state. At this time, igniting the electronic ignition unit 21 with electricity can detonate the detonator 22, and then the detonator 22 detonates the explosive charge 23, thus achieving the detonation effect.

[0030] When the detonator 22, the electronic ignition unit 21, and the explosive charge 23 are misaligned, the detonator 22 is moved out of the housing space by the electromagnetic drive mechanism and locked in a position away from the electronic ignition unit 21 and the explosive charge 23, thus achieving reliable isolation between the detonator 22 and the explosive charge 23, i.e., a safe state. At this time, it can prevent the detonator 22 from being accidentally detonated by the explosive charge 23, which would cause a safety accident.

[0031] The electromagnetic drive mechanism is a bidirectional holding electromagnet 3, the structure of which is shown in the bidirectional holding electromagnet disclosed in Chinese application number CN201721347395.8. Both ends of the bidirectional holding electromagnet 3 have holding forces. During use, switching the positive and negative poles of the power supply enables the movement of the product, thereby moving the detonator 22 into or out of the receiving space, realizing the transition between the safe state and the detonation state of the detonating device. Even after power is cut off, it can maintain its state without continuous power supply. Furthermore, the electromagnet uses a permanent magnet inside, resulting in a very large holding force after power is cut off, which can lock the detonator 22 in a specific position.

[0032] On the other hand, since blasting operations often result in blasting failures or temporary termination of blasting, it is necessary for operators to inspect or retrieve the detonating device. However, at this time, the detonating device is at risk of accidental explosion, and the safety of the operators cannot be guaranteed. The bidirectional holding electromagnet 3 can control the detonating device to switch from the detonation state to the safe state as soon as it is energized. It is easy to operate, realizes reliable isolation between the detonator 22 and the explosive, ensures the safety of the operators, and greatly improves the safety of blasting operations.

[0033] The bidirectional holding electromagnet 3 is fixed in the cavity 11 by the mounting bracket 4 and is located above the receiving space. The bidirectional holding electromagnet 3 has a movable shaft 31, which is installed inside the bidirectional holding electromagnet 3. The bottom and top of the movable shaft 31 extend out of the bidirectional holding electromagnet 3 respectively. The movable shaft 31 can slide up and down by the control of the bidirectional holding electromagnet 3. The bottom of the movable shaft 31 is connected to the detonator 22. The detonator 22 can slide up and down under the control of the movable shaft 31, so as to realize the position switching of the detonator 22, thereby realizing the switching and locking of the detonation device between the safe state and the detonation state.

[0034] The detonator 22 is controlled by a bidirectional holding electromagnet 3. The structure is simple and reasonably designed, requires fewer parts, has high structural strength and excellent reliability. At the same time, the bidirectional holding electromagnet 3 is small in size, which makes it easy to install and arrange in a limited space and facilitates the production and manufacturing of the detonation device.

[0035] Furthermore, since the detonator 22 is usually long and narrow, in order to ensure the stability of the connection between the detonator 22 and the movable shaft 31, the movable shaft 31 and the detonator 22 are connected by a connecting block 32. The top end of the connecting block 32 is fixedly connected to the bottom end of the movable shaft 31. The shape of the bottom of the connecting block 31 matches the shape of the detonator 22. The detonator 22 is glued and fixed to the bottom of the connecting block 32 by adhesive.

[0036] Meanwhile, to ensure the safety of the detonating device during transportation, assembly, and deployment, a limiting plate 5 is fixedly installed on the top of the movable shaft 31. The limiting plate 5 moves synchronously with the movable shaft 31. A manual safety unit is detachably connected to the housing 1. When the detonator 22, the electronic ignition unit 21, and the explosive charge 23 are misaligned, the manual safety unit is located below the limiting plate 5 and abuts against the lower surface of the limiting plate 5 to lock the limiting plate 5, preventing the limiting plate 5 from sliding downwards, i.e., preventing the movable shaft 31 from sliding downwards. This locks the detonator 22 in a position away from the electronic ignition unit 21 and the explosive charge 23, further ensuring reliable isolation between the detonator 22 and the explosive charge 23.

[0037] When the power is off, the bidirectional holding electromagnet 3 can lock the detonator 22, and the manual safety unit can lock the movable shaft 31. That is, this device has two safety mechanisms: the manual safety unit and the bidirectional holding electromagnet 3. Even if the bidirectional holding electromagnet 3 is damaged or fails, the manual safety unit can keep the detonator 22 in a position away from the explosive charge 23, thus ensuring that the detonating device is always in a safe state before detonation, further ensuring the safety of the detonating device during transportation, assembly and deployment.

[0038] Furthermore, the manual safety unit is a hand-tightening screw 6. The housing 1 has a mounting hole 12 with internal threads, and the hand-tightening screw 6 has external threads. The hand-tightening screw 6 is screwed into the housing 1. The hand-tightening screw 6 passes through the mounting hole 12 into the cavity 11 and abuts against the lower surface of the limiting plate 5, thereby locking the limiting plate 5. At the same time, the limiting plate 5 can be locked and unlocked by screwing the hand-tightening screw 6 into or out of the housing 1.

[0039] In this embodiment, in order to help operators judge the status of the detonation device, a detection device for detecting the position of the limiting plate 5 is provided in the cavity 11. Operators can judge whether the detonation device is in a safe state or a detonation state by the results detected by the detection device.

[0040] In this embodiment, the detection device is an elastic sensor 7, which can generate a corresponding electrical signal output or other form of response when subjected to external force or deformation. The elastic sensor 7 is located below the limiting plate 5 and has a gap distance between it and the limiting plate 5. The top of the elastic sensor 7 has a detection contact 71, which has a preset shape and can retract when squeezed. When the limiting plate 5 slides downward, it can abut against the detection contact 71. When the detection contact 71 is squeezed and retracts, the detonation device is in the detonation state and can perform the detonation operation; when the detection contact 71 is not squeezed, the detonation device is in a safe state.

[0041] A receiving box 8 is fixedly connected to the bottom of the housing 1. The receiving box 8 is hollow inside and is used to hold the main explosive 81. The main explosive 81 is detonated by the detonating charge 23. The operator can control the amount of main explosive 81 used according to the blasting requirements.

[0042] In this embodiment, the detonation device is controlled by an external control box, which is connected by a cable. The operator controls the electromagnetic drive mechanism and the electronic ignition unit 21 inside the detonation device through the control box to carry out the blasting operation.

[0043] In this embodiment, the switching and locking between the safe state and the detonation state can be achieved by driving the electromagnetic drive mechanism to move the detonator back and forth. The structure is simple and reasonable, and the reliability is very good. This application adopts a bidirectional holding electromagnet, which can switch the state simply by switching the positive and negative poles of the power supply. The operation is convenient. At the same time, the bidirectional holding electromagnet has a large holding force after the power is cut off, which can resist strong impact and vibration, and has high safety.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A primer device, characterized by The device includes a housing (1), an initiation mechanism (2) located in a cavity (11) inside the housing (1), and an electromagnetic drive mechanism. The initiation mechanism (2) includes an electronically controlled ignition unit (21), a detonator (22), and a detonating charge (23). The electronically controlled ignition unit (21) is used to initiate the detonator (22), and the detonator (22) is used to initiate the detonating charge (23). The electronically controlled ignition unit (21) and the detonating charge (23) are fixed at a relative interval at the bottom of the cavity (11) and form a receiving space for accommodating the detonator (22). The electromagnetic drive mechanism is used to drive the detonator (22) to slide back and forth into or out of the receiving space so that the detonator (22), the electronically controlled ignition unit (21), and the detonating charge (23) are in an aligned or misaligned state. The electromagnetic drive mechanism is a bidirectional holding type electromagnetic drive mechanism. Iron (3), the bidirectional holding electromagnet (3) is fixed in the cavity (11) by the mounting bracket (4), the bidirectional holding electromagnet (3) is provided with a movable shaft (31), the movable shaft (31) passes through the bottom of the bidirectional holding electromagnet (3), the bidirectional holding electromagnet (3) is used to control the movable shaft (31) to slide up and down and to fix the movable shaft (31), the bottom of the movable shaft (31) is connected to the detonator (22); both ends of the bidirectional holding electromagnet (3) have holding force. When in use, the positive and negative poles of the power supply can be switched to realize the movement function of the product, complete the action of moving the detonator (22) into or out of the accommodating space, realize the conversion between the safe state and the detonation state of the detonating device, and after the power is cut off, the state can still remain unchanged.

2. A detonator according to claim 1, characterised in that The detonator (22) is connected to the bottom of the movable shaft (31) via a connecting block (32), the top of the connecting block (32) is connected to the movable shaft (31), and the detonator (22) is fixedly connected to the bottom of the connecting block (32).

3. A detonator according to claim 1, wherein The movable shaft (31) passes through the top of the bidirectional holding electromagnet (3) and extends out. The top of the movable shaft (31) is fixedly connected to a limiting plate (5). A manual safety unit for abutting and limiting with the limiting plate (5) is detachably connected to the housing (1).

4. A detonator according to claim 3, characterised in that The manual safety unit is a hand-tightening screw (6). The housing (1) has a mounting hole (12) for installing the hand-tightening screw (6). The hand-tightening screw (6) passes through the mounting hole (12) into the housing (1) and abuts against the lower surface of the limiting plate (5).

5. A detonator according to claim 3, wherein The housing (1) is equipped with a detection device, which is used to detect the position of the limiting plate (5).

6. A detonator according to claim 5, characterised in that The detection device is an elastic sensor (7). The top of the elastic sensor (7) is provided with a detection contact (71) with a preset shape that can retract when squeezed. When the detonator (22), the electronic ignition unit (21), and the explosive charge (23) are aligned, the detection contact (71) is squeezed by the limiting plate (5).

7. A detonator according to claim 1, wherein A housing box (8) for installing the main explosive (81) is fixedly connected to the bottom of the housing (1), and the main explosive (81) is detonated when the detonating explosive (23) explodes.

8. A detonating device according to any one of claims 1 to 7, characterized in that, The detonation device is connected to an external control box via cable (9), and the operator controls the detonation device through the control box.

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