Double-safety device and detonating mechanism with same

Abstract

The utility model relates to the technical field of blasting, in particular to a double-safety device and a blasting mechanism with the double-safety device, which comprise a shell, a blasting propagation cavity is arranged in the shell, a blasting propagation sliding block is arranged in the blasting propagation cavity in a sliding manner, a blasting propagation grain is arranged on the blasting propagation sliding block, and the blasting propagation sliding block limits a starting point and a stopping point of sliding. A first elastic piece acting on the explosion propagation sliding block is arranged in the explosion propagation cavity, a first safety device and a second safety device which can be released are arranged in the shell, and the first safety device and the second safety device act on the explosion propagation sliding block so as to restrain the explosion propagation sliding block from sliding from the starting point to the ending point. Through the joint constraint of the first safety device and the second safety device, the explosion propagation sliding block can be controlled to slide only by unlocking the two safety devices at the same time, and if any safety device is not released, the explosion propagation sliding block cannot slide, so that an explosion propagation sequence cannot be aligned, accidental explosion caused by a single-point fault is prevented, and the error explosion risk is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of blasting technology, and in particular to a double-safety device and a detonation mechanism having the double-safety device. Background Technology

[0002] In blasting operations, the detonation point typically uses sensitive input detonation elements such as electric detonators, magnetic detonators, or detonating cord detonators. Generally, the sensitive input detonation element is first connected to the initiation wire, then to the main charge. Personnel are then quickly evacuated to a safe distance, and detonation is only carried out after confirming the safety of personnel, the environment, and equipment. During the wiring process, there is a possibility of misoperation of the ignition mechanism in the detonation system, leading to ignition. If the detonation sequence is not properly aligned, this could easily ignite the guiding charge in the detonation mechanism, causing injury to the operators. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a double insurance device and an initiation mechanism having the double insurance device.

[0004] This utility model is achieved through the following technical solution.

[0005] A double-safety device includes a housing, a detonation chamber inside the housing, a detonation slider slidably disposed inside the detonation chamber, a detonation charge disposed on the detonation slider, the detonation slider being defined with a starting point and an ending point for sliding, and when the detonation slider slides to the ending point, the detonation sequence of the detonation mechanism is aligned.

[0006] The detonation chamber is provided with a first elastic element that acts on the detonation slider. The first elastic element is used to drive the slider to slide from the starting point to the ending point.

[0007] The housing is provided with a releasable first safety device and a second safety device, which act on the detonation slider to constrain the detonation slider to slide from the starting point to the ending point.

[0008] As a further improvement of this utility model, the first safety device includes a safety pin, a second elastic element, and a limiting element;

[0009] The detonation slider has a limiting channel, and the safety pin is movably disposed in the housing. One end of the safety pin passes through the limiting channel to constrain the detonation slider to slide from the starting point to the ending point.

[0010] The second elastic element is disposed inside the housing and acts on the safety pin to drive the safety pin to slide out of the limiting channel;

[0011] The limiting member is detachably mounted on the housing, and one end of the limiting member abuts against the safety pin to constrain the sliding of the safety pin.

[0012] As a further improvement of this utility model, the housing has a first safety chamber that is perpendicularly connected to the detonation chamber, the safety pin is slidably disposed in the first safety chamber, and the limiting member is disposed at the opening end of the first safety chamber by a threaded connection.

[0013] As a further improvement of this utility model, the housing is provided with an observation port that communicates with the first safety chamber, the observation port being used by the user to observe the sliding position of the safety pin.

[0014] As a further improvement of this utility model, the limiting member includes a connecting part and an abutment top disposed on the lower side of the connecting part. The diameter of the abutment top is smaller than the diameter of the connecting part. When the limiting member is disposed at the opening end of the first safety chamber by a threaded connection, the abutment top is located at the observation port.

[0015] As a further improvement of this utility model, the second safety device includes: a safety element, an unlocking slider, and an actuating element;

[0016] The housing has a second safety chamber arranged parallel to the detonation chamber, and the second safety chamber has a safety through hole that communicates with the detonation chamber.

[0017] The side wall of the detonation slider is provided with a slot, and the safety component is movably disposed in the safety through hole with one end inserted into the slot;

[0018] The unlocking slider is slidably disposed in the second safety chamber, and when the unlocking slider is not slidable, its side wall abuts against the safety element to restrain the safety element from disengaging from the safety through hole;

[0019] The actuator is disposed on one side of the unlocking slider, and the actuator acts on the unlocking slider to drive the unlocking slider to slide.

[0020] As a further improvement of this utility model, the actuating element is an electric ignition tube, which is connected to the opening of the second safety chamber by a threaded connection.

[0021] As a further improvement of this utility model, the safety element is a ball bearing, and the axial length of the safety through hole is smaller than the diameter of the ball bearing.

[0022] As a further improvement of this utility model, the detonation slider is provided with a shear pin, and the side wall of the second safety chamber is provided with a shear groove. When the unlocking slider is not sliding, one end of the shear pin is inserted into the shear groove to restrain the unlocking slider from sliding.

[0023] Based on the same concept, this utility model also discloses an initiation mechanism, including the double insurance device as described above.

[0024] The beneficial effects of this utility model are as follows: Through the joint constraint of the first safety device and the second safety device, both safety devices must be unlocked simultaneously to control the sliding of the detonation slider. If either safety device is not released, the detonation slider cannot slide, thereby preventing the detonation sequence from being aligned and preventing accidental detonation caused by a single point of failure, thus significantly reducing the risk of accidental detonation. Attached Figure Description

[0025] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein:

[0026] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the structure of this utility model when it is in an explosion-proof state;

[0029] Figure 4 This is a schematic diagram of the structure of this utility model embodiment when it is in the unlocked state.

[0030] The following are the numbered components in the diagram: 1. Shell; 2. Detonation chamber; 3. Detonation slider; 4. Detonation charge; 5. First elastic element; 6. Safety pin; 7. Second elastic element; 8. Limiting element; 9. Limiting channel; 10. First safety chamber; 11. Observation port; 801. Connecting part; 802. Top; 12. Safety element; 13. Unlocking slider; 14. Actuating element; 15. Second safety chamber; 16. Safety through hole; 17. Slot; 18. Shearing pin; 19. Shearing groove. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] 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.

[0033] refer to Figures 1 to 4 The present utility model embodiment discloses that:

[0034] A detonation mechanism with a double safety device includes a housing 1, within which a detonation transmission chamber 2 is formed. A detonation transmission slider 3 is slidably disposed within the detonation transmission chamber 2, and a detonation transmission charge 4 is disposed on the detonation transmission slider 3. The detonation transmission slider 3 is defined with a starting point and an ending point for sliding. When the detonation transmission slider 3 slides to the ending point, the detonation sequence of the detonation mechanism is aligned. Specifically, an ignition detonator and a detonating charge (not shown in the figure) are disposed within the housing 1, and the two are aligned. The detonating charge is connected to a detonating cord (not shown in the figure), and the detonation is connected to the explosive charge via the detonating cord. The explosive charge 4 is located between the ignition detonator and the expander charge, i.e., the explosive charge sequence is: ignition detonator - explosive charge 4 - expander charge - detonating cord - explosive. In this embodiment, the explosive charge slider 3 is slidably disposed in the explosive charge chamber 2. When the explosive charge slider 3 is at the starting point, the explosive charge 4 is not aligned with the ignition detonator and the expander charge. At this time, the detonation mechanism is in an explosion-proof state. When the explosive charge slider 3 slides to the ending point, the explosive charge sequence of the detonation mechanism is aligned (the explosive charge 4 is aligned with the ignition detonator and the expander charge), and detonation can be carried out normally.

[0035] The detonation chamber 2 is equipped with a first elastic element 5 that acts on the detonation slider 3. The first elastic element 5 is a compression spring. When the detonation slider 3 is at the starting point of sliding, the first elastic element 5 is in a compressed state, which drives the slider to slide from the starting point to the ending point. The housing 1 is equipped with a releasable first safety device and a second safety device. The first safety device and the second safety device act on the detonation slider 3 to constrain the detonation slider 3 to slide from the starting point to the ending point. When the two safety devices are released, the detonation slider 3 is no longer constrained. At this time, the first elastic element 5 can drive the detonation slider 3 to slide to the ending point, the detonation sequence is aligned, and the detonation mechanism can detonate normally. In this embodiment, through the joint constraint of the first safety device and the second safety device, both safety devices must be unlocked simultaneously to control the sliding of the detonation slider 3. If either safety device is not released, the detonation slider 3 cannot slide, preventing accidental detonation due to a single point of failure and significantly reducing the risk of accidental detonation.

[0036] Specifically, in this embodiment, the first safety device includes a safety pin 6, a second elastic element 7, and a limiting element 8; the detonation slider 3 has a limiting channel 9, the safety pin 6 is movably disposed within the housing 1, and one end of the safety pin 6 passes through the limiting channel 9 to constrain the detonation slider 3 to slide from the starting point to the ending point; the second elastic element 7 is disposed within the housing 1 and acts on the safety pin 6. Specifically, the second elastic element 7 is a compression spring, sleeved on the safety pin 6, with one end abutting against the safety pin 6 and the other end abutting against the inner wall of the housing 1 to drive the safety pin 6 to slide away from the limiting channel 8. Channel 9; The limiting member 8 is detachably mounted on the housing 1, and one end of the limiting member 8 abuts against the safety pin 6 to constrain the sliding of the safety pin 6; Specifically, when the first safety device is in the explosion-proof state, the explosion transmission slider 3 is located at the starting point position. At this time, the safety pin 6 passes into the limiting channel 9 and compresses the second elastic member 7, while the limiting member 8 constrains the safety pin 6; If unlocking is required, the operator removes the limiting member 8. At this time, the limiting member 8 no longer constrains the sliding of the safety pin 6, and the second elastic member 7 releases its elastic potential energy to reset, thereby driving the safety pin 6 to slide, so that the lower end of the safety pin 6 disengages from the limiting channel 9.

[0037] The housing 1 has a first safety chamber 10 that is perpendicularly connected to the detonation chamber 2. The safety pin 6 is slidably disposed in the first safety chamber 10. The limiting member 8 is threadedly connected to the opening end of the first safety chamber 10. In addition, one end of the limiting member 8 is provided with a threaded hole (slotted screw hole) that can be driven by a tool (e.g., a flathead screwdriver) to facilitate disassembly.

[0038] The housing 1 has an observation port 11 that communicates with the first safety chamber 10, allowing the user to observe the sliding position of the safety pin 6. The limiting member 8 includes a connecting part 801 and an abutment 802 located on the lower side of the connecting part 801. The lower end of the abutment 802 abuts against the safety pin 6. The diameter of the abutment 802 is smaller than the diameter of the connecting part 801. When the limiting member 8 is threadedly connected to the opening end of the first safety chamber 10, the abutment 802 is located at the observation port 11. The operator can determine whether the first safety device is unlocked by observing the position of the abutment 802, that is, directly confirm whether the safety pin 6 is released through the observation port 11, avoiding misjudgment of the safety status due to blind operation.

[0039] The second safety device includes: a safety element 12, an unlocking slider 13, and an actuating element 14; a second safety chamber 15 is provided inside the housing 1, parallel to the detonation chamber 2 (and the second safety chamber 15 is located below the detonation chamber 2), and the second safety chamber 15 has a safety through hole 16 communicating with the detonation chamber 2; a slot 17 is provided on the side wall of the detonation slider 3, the safety element 12 is movably disposed in the safety through hole 16 and one end is inserted into the slot 17; the unlocking slider 13 is slidably disposed in the second safety chamber 15, and when the unlocking slider 13 is not sliding, its side wall abuts against the safety element 12 to restrain the safety element 12 from disengaging from the safety through hole 16; the actuating element 14 is disposed on one side of the unlocking slider 13, and the actuating element 14 acts on the unlocking slider 13 to drive the unlocking slider 13. The unlocking slider 13 slides; specifically, when the second safety device is in the explosion-proof state, the detonation slider 3 is located at the starting point position, and at the same time, the unlocking slider 13 is in the non-sliding position, abutting against the safety element 12. At this time, the other end of the safety element 12 is inserted into the slot 17, thereby restraining the sliding of the detonation slider 3. If unlocking is required, the control actuator 14 is activated, causing the unlocking slider 13 to slide, so that the unlocking slider 13 no longer abuts against the safety element 12. At this time, the safety element 12 is disengaged from the safety through hole 16 under the action of gravity, and correspondingly, the other end of the safety element 12 is disengaged from the slot 17. At this time, the safety element 12 no longer restrains the sliding of the detonation slider 3. At this time, both the first safety device and the second safety device are released, and the first elastic element 5 can drive the detonation slider 3 to slide to the end point, the detonation sequence is aligned, and the detonation mechanism can detonate normally.

[0040] The actuator 14 is an electric ignition tube, which is threadedly connected to the opening of the second safety chamber. After the first safety device is released and the staff evacuates to a safe area, the electric ignition tube ignites at a preset time, using the generated gas pressure to push the unlocking slider 13 to slide, thereby releasing the constraint on the safety device 12.

[0041] The safety element 12 is a ball bearing. The axial length of the safety through hole 16 is smaller than the diameter of the ball bearing. The contact area between the ball bearing and the slot 17 is small, and the resistance to the sliding of the unlocking slider 13 is small, so as to ensure that the electric ignition tube can quickly disengage from the safety through hole 16 after ignition, thereby releasing the detonation slider 3.

[0042] The detonation slider 3 is provided with a shear pin 18, and the side wall of the second safety chamber 15 is provided with a shear groove 19. When the unlocking slider 13 is not sliding, one end of the shear pin 18 is inserted into the shear groove 19 to restrain the sliding of the unlocking slider 13. The shear pin 18 is a plastic shear pin 18, which needs to break when the unlocking slider 13 reaches a certain thrust, so as to prevent the second safety device from being prematurely released due to external impact or accidental contact.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for 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 this utility model.

Claims

1. A double-safety device, comprising a housing (1), characterized in that: The housing (1) has a detonation chamber (2) inside, and a detonation slider (3) is slidably arranged inside the detonation chamber (2). A detonation charge (4) is arranged on the detonation slider (3). The detonation slider (3) is defined with a starting point and an ending point for sliding. When the detonation slider (3) slides to the ending point, the detonation sequence of the detonation mechanism is aligned. The detonation chamber (2) is provided with a first elastic element (5) that acts on the detonation slider (3). The first elastic element (5) is used to drive the slider to slide from the starting point to the ending point. The housing (1) is provided with a releasable first safety device and a second safety device. The first safety device and the second safety device act on the detonation slider (3) to constrain the detonation slider (3) to slide from the starting point to the ending point.

2. The double-insurance device according to claim 1, characterized in that: The first safety device includes a safety pin (6), a second elastic element (7), and a limiting element (8); The detonation slider (3) has a limiting channel (9), and the safety pin (6) is movably disposed in the housing (1). One end of the safety pin (6) passes through the limiting channel (9) to constrain the detonation slider (3) from the starting point to the ending point. The second elastic element (7) is disposed inside the housing (1), and the second elastic element (7) acts on the safety pin (6) to drive the safety pin (6) to slide away from the limiting channel (9); The limiting member (8) is detachably mounted on the housing (1), and one end of the limiting member (8) abuts against the safety pin (6) to constrain the sliding of the safety pin (6).

3. The double-insurance device according to claim 2, characterized in that: The housing (1) has a first safety chamber (10) that is perpendicularly connected to the detonation chamber (2). The safety pin (6) is slidably disposed in the first safety chamber (10). The limiting member (8) is disposed at the opening end of the first safety chamber (10) by a threaded connection.

4. A double-insurance device according to claim 3, characterized in that: The housing (1) has an observation port (11) that communicates with the first safety chamber (10), and the observation port (11) is used by the user to observe the sliding position of the safety pin (6).

5. A double-insurance device according to claim 4, characterized in that: The limiting member (8) includes a connecting part (801) and an abutment (802) disposed on the lower side of the connecting part (801). The diameter of the abutment (802) is smaller than the diameter of the connecting part (801). When the limiting member (8) is disposed at the opening end of the first safety chamber (10) by a threaded connection, the abutment (802) is located at the observation port (11).

6. A double-insurance device according to claim 1, characterized in that: The second safety device includes: a safety element (12), an unlocking slider (13), and an actuator (14); The housing (1) has a second safety chamber (15) arranged parallel to the detonation chamber (2), and the second safety chamber (15) has a safety through hole (16) communicating with the detonation chamber (2). The detonation slider (3) has a slot (17) on its side wall, and the safety component (12) is movably disposed in the safety through hole (16) and one end is inserted into the slot (17); The unlocking slider (13) is slidably disposed in the second safety chamber (15), and when the unlocking slider (13) is not slidable, its side wall abuts against the safety member (12) to restrain the safety member (12) from disengaging from the safety through hole (16). The actuator (14) is disposed on one side of the unlocking slider (13), and the actuator (14) acts on the unlocking slider (13) to drive the unlocking slider (13) to slide.

7. A double-insurance device according to claim 6, characterized in that: The actuator (14) is an electric ignition tube, which is connected to the opening of the second safety chamber (15) by a threaded connection.

8. A double-insurance device according to claim 7, characterized in that: The safety element (12) is a ball bearing, and the axial length of the safety through hole (16) is smaller than the diameter of the ball bearing.

9. A double-insurance device according to claim 6, characterized in that: The detonation slider (3) is provided with a shear pin (18), and the second safety chamber (15) has a shear groove (19) on its side wall. When the unlocking slider (13) is not sliding, one end of the shear pin (18) is inserted into the shear groove (19) to restrain the unlocking slider (13) from sliding.

10. A detonation mechanism with a double safety device, characterized in that: Includes the double insurance device as described in any one of claims 1-9.

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