Safety device of electromechanical safety actuating mechanism

Abstract

The invention relates to the technical field of blasting, in particular to a safety device of an electromechanical safety actuator, which comprises a base and a detonating tube mounted on the base. An isolation sliding rod is installed in a center hole of the machine base in a sliding mode. The device further comprises a trigger switch and a sliding rod locking mechanism. An electric detonating source is mounted on the engine base; a booster tube is inserted into the isolation sliding rod; the trigger switch is connected to a detonating circuit of the electric detonating source; a double-insurance structure is arranged on the machine base and used for locking the isolation sliding rod in the initial state. An actuating push spring is arranged in a central hole of the base; the actuating push spring is in a compressed energy storage state, and the elastic force of the actuating push spring axially acts on the isolation sliding rod; when the double-insurance structure is released and the actuating push spring pushes the isolation sliding rod to slide in place in the center hole of the machine base, the electric detonating source, the booster tube and the detonating tube are collinear and are conducted, the trigger switch is triggered to switch on the detonating circuit, and the sliding rod locking mechanism locks the isolation sliding rod sliding in place.

Description

Technical Field

[0001] The present invention relates to the technical field of blasting, and particularly to a safety device for an electro-mechanical safety actuator. Background Art

[0002] The safety device is an important part of the electro-mechanical safety actuator, ensuring the initial safety state of the safety actuator before the release of the safety device, and releasing all safety devices after meeting the conditions to ensure that the safety actuator completes the explosive output.

[0003] In the prior art, for example, the patent application with the publication number CN118274675A discloses a remotely controllable safety device, which forms a double safety by setting a manual pin pulling and an electromagnetic pin pulling. The manual pin pulling ensures the safety during operation, transportation, storage and assembly, and the electromagnetic pin pulling solves the safety hazard of near-distance detonation, ensuring the safety during blasting operations.

[0004] However, in the above-mentioned safety device in the prior art, during operation, after the double safety is released and the slider moves into place, it cannot trigger the detonation circuit to connect and input the detonating element to complete self-starting. Therefore, the safety device in the prior art cannot be applied to scenarios that require rapid detonation. Summary of the Invention

[0005] The main object of the present invention is to propose a safety device for an electro-mechanical safety actuator, aiming to solve the above technical problems.

[0006] To achieve the above object, the present invention proposes a safety device for an electro-mechanical safety actuator, including a machine base and a detonator tube installed on the machine base; an isolation sliding rod is slidably installed in the central hole of the machine base; a trigger switch and a sliding rod locking mechanism are further included; an electric detonator source is installed on the machine base; a detonating tube is inserted on the isolation sliding rod; the trigger switch is connected to the detonation circuit of the electric detonator source; a double safety structure is provided on the machine base for locking the isolation sliding rod in the initial state; a driving push spring is provided in the central hole of the machine base; the driving push spring is in a compressed energy storage state, and its elastic force acts axially on the isolation sliding rod; when the double safety structure is released and the driving push spring pushes the isolation sliding rod to slide into place in the central hole of the machine base, the electric detonator source, the detonating tube and the detonator tube are collinear and conduct, and the trigger switch is touched to connect the detonation circuit, and the sliding rod locking mechanism locks the isolation sliding rod that has slid into place.

[0007] Preferably, an end cover is provided at the end of the machine base; the trigger switch is a reed switch installed on the end cover; when the double safety structure is released and the isolation sliding rod slides into place, the end of the isolation sliding rod away from the driving push spring abuts against the reed switch, causing the two reeds of the reed switch to contact and conduct.

[0008] Preferably, the slide bar locking mechanism includes a pin shaft and a first spring; an annular protrusion is integrally formed on the outer cylindrical surface of the pin shaft; a pin shaft mounting tube is integrally formed on the side wall of the machine base, and the central hole of the pin shaft mounting tube is perpendicular to and communicates with the central hole of the machine base; the pin shaft is mounted in the central hole of the pin shaft mounting tube, and the outer cylindrical surface of the annular protrusion is in sliding fit with the central hole of the pin shaft mounting tube; an annular cover body is arranged on the end surface of the pin shaft mounting tube; the end of the pin shaft away from the machine base is slidably inserted into the central hole of the annular cover body; the first spring is sleeved on the pin shaft, and one end of the first spring abuts against the annular protrusion and the other end abuts against the annular cover body; the first spring is in a compressed energy storage state and pushes the pin shaft against the isolation slide bar; a locking sunk hole is formed in the isolation slide bar; when the isolation slide bar slides in place in the central hole of the machine base, the first spring pushes the pin shaft into the locking sunk hole.

[0009] Preferably, in the double insurance structure, one is a first electric actuator and the other is a slider; a slider mounting tube is integrally formed on the machine base; the slider is slidably mounted in the slider mounting tube; a limiting post is arranged at one end of the slider and a spring mounting post is arranged at the other end; a retaining cover is arranged on the end surface of the slider mounting tube; a second spring is sleeved on the spring mounting post, and one end of the second spring abuts against the retaining cover and the other end abuts against the slider; the second spring is in a compressed energy storage state; a first brake pin is arranged on the first electric actuator; a limiting groove is formed at the end of the isolation slide bar away from the actuating push spring; an insurance hole is formed in the isolation slide bar; in the initial state, the limiting post is inserted into the limiting groove; the first brake pin is inserted into the insurance hole.

[0010] Optionally, in the double insurance structure, one is a first electric actuator and the other is a second electric actuator; a first brake pin is arranged on the first electric actuator; a second brake pin is arranged on the second electric actuator; a limiting through hole is formed at the end of the isolation slide bar away from the actuating push spring; an insurance hole is formed in the isolation slide bar; in the initial state, the second brake pin is inserted into the limiting through hole; the first brake pin is inserted into the insurance hole.

[0011] Preferably, a push spring pressing cover is arranged at the end of the machine base, and a push spring mounting post is integrally formed on the push spring pressing cover; one end of the actuating push spring is sleeved on the push spring mounting post, and the other end is mounted in the sunk hole on the end face of the isolation slide bar.

[0012] Optionally, the slide bar locking mechanism includes a locking bolt slidably inserted into the machine base; the trigger switch is a micro switch; a locking counterbore is formed in the isolation slide bar; the locking bolt is installed at the front end of the elastic button of the micro switch, and the elastic button of the micro switch always generates an axial thrust on the locking bolt and pushes the locking bolt against the isolation slide bar; the end face of the pressing end of the locking bolt is set as a spherical surface; when the isolation slide bar slides in place in the central hole of the machine base, the elastic button of the micro switch pushes the locking bolt into the locking counterbore.

[0013] Further, the inside of the micro switch is a single-pole double-throw switch; in the initial state, the micro switch shorts the electric initiation source and grounds it; when the isolation slide bar slides in place in the central hole of the machine base, the locking bolt is inserted into the locking counterbore, and the elastic button switches the micro switch, disconnecting the short circuit of the electric initiation source and then connecting the initiation circuit.

[0014] Preferably, the central hole of the machine base is a rectangular hole, and the isolation slide bar is a prism with a rectangular cross-section.

[0015] Preferably, a first pipe body and a second pipe body are integrally formed on the top wall and the bottom wall of the machine base respectively; the central holes of the first pipe body and the second pipe body are collinear and respectively penetrate through to the central hole of the machine base; the detonator is installed in the central hole of the first pipe body; the electric initiation source is installed in the central hole of the second pipe body.

[0016] Due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0017] (1) In the present invention, by setting a trigger switch and connecting the trigger switch to the initiation circuit of the electric initiation source, when the double insurance structure is released and the actuating push spring pushes the isolation slide bar to slide in place in the central hole of the machine base, the electric initiation source, the detonator, and the detonator are collinear and conduct, and the initiation circuit can be immediately connected by touching the trigger switch, realizing the function of rapid initiation.

[0018] (2) In the present invention, by using the slide bar locking mechanism to lock the isolation slide bar that has slid in place, the locking function of the isolation slide bar is realized, which is beneficial to ensuring that the electric initiation source, the detonator, and the detonator remain collinear and conduct, avoiding the problem that the actuating push spring pushes the isolation slide bar to move excessively, resulting in misalignment between the detonator and the electric initiation source and the detonator, and ensuring the reliability of initiation. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 The main cross-sectional view of the insurance device provided in the first embodiment of the present invention;

[0021] Figure 2 For Figure 1 The cross-sectional view along A-A in

[0022] Figure 3 The left view of the insurance device provided in the first embodiment of the present invention;

[0023] Figure 4 The front view of the insurance device provided in the second embodiment of the present invention;

[0024] Figure 5 The left view of the insurance device provided in the second embodiment of the present invention;

[0025] Figure 6 For Figure 4 The cross-sectional view along B-B in , and in the initial state, the isolation slide bar is locked by the double insurance structure;

[0026] Figure 7 For Figure 4 The cross-sectional view along B-B in , and the state where the isolation slide bar slides in place after the insurance is released;

[0027] Figure 8 For Figure 5 The cross-sectional view along C-C in , and in the initial state, the isolation slide bar is locked by the double insurance structure, and the electric initiator, the detonator transfer tube, and the detonating fuse are in a non-conductive state;

[0028] Figure 9 For Figure 5 The cross-sectional view along C-C in , and the state where the isolation slide bar slides in place after the insurance is released, and the electric initiator, the detonator transfer tube, and the detonating fuse are collinear and conductive;

[0029] Figure 10 The circuit schematic diagram when the microswitch is in the initial state in the second embodiment;

[0030] Figure 11 The schematic diagram when the microswitch turns on the detonation circuit in the second embodiment;

[0031] Description of the attached reference numerals: 1. Slide block; 1a. Limit post; 1b. Spring mounting post; 2. Second spring; 3. First electric actuator; 3a. First brake pin; 4. Reed switch; 5. Pin shaft; 6. First spring; 7. Isolation slide bar; 7a. Locking counterbore; 7b. Limit groove; 7c. Safety hole; 7d. Limit through hole; 8. Actuating push spring; 9. Electric initiation source; 10. Booster tube; 11. Detonator tube; 12. Machine base; 12a. Pin shaft mounting tube; 12b. Slide block mounting tube; 12c. First tube body; 12d. Second tube body; 13. End cover; 14. Annular cover body; 15. Retaining cover; 16. Second electric actuator; 16a. Second brake pin; 17. Push spring pressing cover; 17a. Push spring mounting post; 18. Lock bolt; 19. Micro switch. Detailed implementation mode

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0035] Embodiment 1:

[0036] Combined with Figures 1 to 3As shown in the figure, it is the first embodiment of the safety device of an electro-mechanical safety actuator provided by the present invention. The safety device includes a base 12 and a detonator tube 11 mounted on the base 12. A separating slide bar 7 is slidably mounted in the central hole of the base 12. It also includes a trigger switch and a slide bar locking mechanism. An electric detonator source 9 is mounted on the base 12. The axes of the electric detonator source 9 and the detonator tube 11 are collinear, and their axial directions are perpendicular to the axis of the central hole of the base 12. A detonator transfer tube 10 is inserted on the separating slide bar 7. The electric detonator source 9, the detonator transfer tube 10, and the detonator tube 11 form an explosion sequence. The trigger switch is connected to the firing circuit of the electric detonator source 9. A double-safety structure is provided on the base 12 for locking the separating slide bar 7 in the initial state. An actuating push spring 8 is provided in the central hole of the base 12. The actuating push spring 8 is in a compressed energy storage state, and its elastic force acts axially on the separating slide bar 7. In the initial state, since the separating slide bar 7 is locked, the separating slide bar 7 separates the detonator tube 11 and the electric detonator source 9. At this time, the detonator transfer tube 10 is misaligned with the detonator tube 11 and the electric detonator source 9. When the double-safety structure is released and the actuating push spring 8 pushes the separating slide bar 7 to slide in place in the central hole of the base 12, the electric detonator source 9, the detonator transfer tube 10, and the detonator tube 11 are collinear and conduct, and the trigger switch is touched to connect the firing circuit, and the slide bar locking mechanism locks the separating slide bar 7 that has slid in place.

[0037] Combined with Figure 2 and Figure 3 As shown in the figure, an end cover 13 is provided at the end of the base 12. The trigger switch is a reed switch 4 mounted on the end cover 13. When the double-safety structure is released and the separating slide bar 7 slides in place, the end of the separating slide bar 7 away from the actuating push spring 8 abuts against the reed switch 4, so that the two reeds of the reed switch 4 contact and conduct.

[0038] The slide bar locking mechanism includes a pin shaft 5 and a first spring 6; an annular protrusion 5a is integrally formed on the outer cylindrical surface of the pin shaft 5; a pin shaft mounting tube 12a is integrally formed on the side wall of the machine base 12, and the central hole of the pin shaft mounting tube 12a is perpendicular to and communicates with the central hole of the machine base 12; the pin shaft 5 is installed in the central hole of the pin shaft mounting tube 12a, and the outer cylindrical surface of the annular protrusion 5a is in sliding fit with the central hole of the pin shaft mounting tube 12a; an annular cover body 14 is arranged on the end surface of the pin shaft mounting tube 12a; the end of the pin shaft 5 far from the machine base 12 is slidably inserted into the central hole of the annular cover body 14; the first spring 6 is sleeved on the pin shaft 5, one end of the first spring 6 abuts against the annular protrusion 5a, and the other end abuts against the annular cover body 14; the first spring 6 is in a compressed energy storage state and pushes the pin shaft 5 to abut against the isolation slide bar 7; a locking sunk hole 7a is formed in the isolation slide bar 7; when the isolation slide bar 7 is unlocked and slides in place in the central hole of the machine base 12, the first spring 6 pushes the pin shaft 5 to insert into the locking sunk hole 7a. By using the structure of the pin shaft 5 cooperating with the locking sunk hole 7a to lock the isolation slide bar 7, it is beneficial to ensure that the electric initiator 9, the detonator 10, and the detonating fuse 11 are collinear and conducting.

[0039] Combined with Figure 1 As shown, in the first embodiment, in the double insurance structure, one is the first electric actuator 3 and the other is the slider 1; specifically, a slider mounting tube 12b is integrally formed on the machine base 12; the slider 1 is slidably installed in the slider mounting tube 12b; a limiting column 1a is arranged at one end of the slider 1, and a spring mounting column 1b is arranged at the other end; a retaining cover 15 is arranged on the end surface of the slider mounting tube 12b; a second spring 2 is sleeved on the spring mounting column 1b, one end of the second spring 2 abuts against the retaining cover 15, and the other end abuts against the slider 1; the second spring 2 is in a compressed energy storage state; a first braking pin 3a is arranged on the first electric actuator 3; a limiting groove 7b is formed at the end of the isolation slide bar 7 far from the actuating push spring 8; an insurance hole 7c is formed in the isolation slide bar 7; in the initial state, the limiting column 1a is inserted into the limiting groove 7b; the first braking pin 3a is inserted into the insurance hole 7c. The slider 1 and the second spring 2 constitute an inertial damping insurance structure, realizing inertial insurance. Under the action of a sufficient acceleration magnitude, the slider 1 moves and compresses the second spring 2, causing the limiting column 1a to release the mechanical constraint on the isolation slide bar 7.

[0040] Combined with Figure 1 And Figure 2As shown, in order to ensure the stability of the installation of the actuating push spring 8, a push spring gland 17 is provided at the end of the machine base 12, and a push spring mounting post 17a is integrally formed on the push spring gland 17; one end of the actuating push spring 8 is sleeved on the push spring mounting post 17a, and the other end is installed in a counterbore on the end face of the isolation slide bar 7. By using the push spring mounting post 17a on the push spring gland 17 and the counterbore on the end face of the isolation slide bar 7 to jointly install the actuating push spring 8, it better ensures that the axial thrust of the actuating push spring 8 coincides with the axis of the isolation slide bar 7, which is beneficial to improving the sliding stability of the isolation slide bar 7.

[0041] The working principle of the safety device provided in the first embodiment is as follows:

[0042] In the safety state, the limit post 1a on the slider 1 and the first brake pin 3a on the first electric actuator 3 respectively apply mechanical constraints to the isolation slide bar 7, so that the isolation slide bar 7 cannot slide. Thus, the isolation slide bar 7 isolates and blocks the electric initiator 9 of the explosion train from the detonator 11. At the same time, the two reeds on the reed switch 4 are in an open state, disconnecting the electric initiator 9 from its initiation circuit. Finally, the safety device cannot output a detonation.

[0043] The inertial damping safety structure formed by the slider 1 and the second spring 2, under the action of a sufficient acceleration magnitude, the slider 1 moves and compresses the second spring 2, causing the limit post 1a to release the mechanical constraint on the isolation slide bar 7.

[0044] The first electric actuator 3 realizes the electric safety function. After the control circuit of the safety actuator applies power to the first electric actuator 3 according to the command, the first electric actuator 3 actuates to cause the first brake pin 3a to release the other mechanical constraint on the isolation slide bar 7.

[0045] After both mechanical constraints of the isolation slide bar 7 are released, it moves into place under the action of the actuating push spring 8 and is locked by the pin shaft 5. At this time, the electric initiator 9, the detonator 10, and the detonator 11 are collinear and conducting. At the same time, the end of the isolation slide bar 7 away from the actuating push spring 8 abuts against the reed switch 4, causing the two reeds of the reed switch 4 to contact and conduct, connecting the initiation circuit, enabling the initiation signal of the safety actuator to be transmitted to the electric initiator 9, detonating the electric initiator 9 and transmitting it to the detonator 11 through the detonator 10, and outputting a detonation.

[0046] Embodiment 2:

[0047] Combined with Figures 4 to 11As shown in the figure, this is the second embodiment of the safety device of an electromechanical safety actuator provided by the present invention. The safety device includes a base 12 and a detonator tube 11 installed on the base 12. A separating slide bar 7 is slidably installed in the central hole of the base 12. It also includes a trigger switch and a slide bar locking mechanism. An electric initiator 9 is installed on the base 12. The axes of the electric initiator 9 and the detonator tube 11 are collinear, and their axial directions are perpendicular to the axis of the central hole of the base 12. A detonator 10 is inserted on the separating slide bar 7. The electric initiator 9, the detonator 10, and the detonator tube 11 form an explosion sequence. The trigger switch is connected to the initiation circuit of the electric initiator 9. A double insurance structure is provided on the base 12 for locking the separating slide bar 7 in the initial state. A driving push spring 8 is arranged in the central hole of the base 12. The driving push spring 8 is in a compressed energy storage state, and its elastic force acts axially on the separating slide bar 7. In the initial state, since the separating slide bar 7 is locked, the separating slide bar 7 separates the detonator tube 11 and the electric initiator 9. At this time, the detonator 10 is misaligned with the detonator tube 11 and the electric initiator 9. When the double insurance structure is released and the driving push spring 8 pushes the separating slide bar 7 to slide in place in the central hole of the base 12, the electric initiator 9, the detonator 10, and the detonator tube 11 are collinear and conduct, and the trigger switch is touched to connect the initiation circuit, and the slide bar locking mechanism locks the separating slide bar 7 that has slid in place.

[0048] Combined with Figure 6 , Figure 7 As shown in the figure, in the double insurance structure of the second embodiment, one of them is the first electric actuator 3, and the other is the second electric actuator 16. A first braking pin 3a is arranged on the first electric actuator 3. A second braking pin 16a is arranged on the second electric actuator 16. A limiting through hole 7d is opened at one end of the separating slide bar 7 away from the driving push spring 8. An insurance hole 7c is opened on the separating slide bar 7. In the initial state, the second braking pin 16a is inserted into the limiting through hole 7d. The first braking pin 3a is inserted into the insurance hole 7c. In this embodiment, two electric actuators are used as the double insurance structure. The two braking pins on the two electric actuators respectively form a mechanical locking constraint on the separating slide bar 7.

[0049] Compared with the first embodiment, in the double insurance structure of the second embodiment, the inertial damping insurance structure of the slider 1 and the second spring 2 is replaced by the second electric actuator 16 and the second braking pin 16a. The second electric actuator 16 is combined with the control circuit of the safety actuator to achieve control. When releasing the insurance, the control circuit responds to the magnitude of the acceleration and judges the duration of the acceleration. After meeting the requirements, the second electric actuator 16 is powered on. The second electric actuator 16 acts to release the mechanical constraint of the second braking pin 16a on the separating slide bar 7, and the inertial insurance is released.

[0050] Combined with Figure 6 and Figure 7 As shown, the slide bar locking mechanism includes a locking bolt 18 slidably inserted into the machine base 12; the trigger switch is a micro switch 19; a locking sink hole 7a is formed in the isolation slide bar 7; the locking bolt 18 is installed at the front end of the elastic button of the micro switch 19, and the elastic button of the micro switch 19 always generates an axial thrust on the locking bolt 18 and pushes the locking bolt 18 against the isolation slide bar 7; the end face of the tightening end of the locking bolt 18 is set as a spherical surface; when the isolation slide bar 7 slides in place in the central hole of the machine base 12, the elastic button of the micro switch 19 pushes the locking bolt 18 into the locking sink hole 7a.

[0051] Combined with Figure 10 and Figure 11 As shown, the inside of the micro switch 19 is a single-pole double-throw switch; in the initial state, the micro switch 19 shorts the electric initiation source 9 and grounds it; when the isolation slide bar 7 slides in place in the central hole of the machine base 12, the locking bolt 18 is inserted into the locking sink hole 7a, and the elastic button switches the micro switch 19, disconnecting the short circuit of the electric initiation source 9 and then connecting the initiation circuit.

[0052] Combined with Figure 8 and Figure 9 As shown, in order to ensure the stability of the installation of the actuating push spring 8, a push spring pressing cover 17 is provided at the end of the machine base 12, and a push spring installation column 17a is integrally formed on the push spring pressing cover 17; one end of the actuating push spring 8 is sleeved on the push spring installation column 17a, and the other end is installed in the sink hole on the end face of the isolation slide bar 7. By using the push spring installation column 17a on the push spring pressing cover 17 and the sink hole on the end face of the isolation slide bar 7 to jointly install the actuating push spring 8, it better ensures that the axial thrust of the actuating push spring 8 coincides with the axis of the isolation slide bar 7, which is beneficial to improving the sliding stability of the isolation slide bar 7.

[0053] Combined with Figure 5 As shown, the central hole of the machine base 12 is a rectangular hole, and the isolation slide bar 7 is a prism with a rectangular cross-section. The isolation slide bar 7 is set as a prism structure, which can prevent it from rotating during movement to ensure that the electric initiation source 9, the detonator 10, and the detonating fuse 11 are collinear and conduct after the isolation slide bar 7 moves in place.

[0054] Combined with Figure 8 and Figure 9As shown, in order to facilitate the installation of the detonating cord 11 and the electric detonating source 9, a first tube body 12c and a second tube body 12d are integrally formed on the top wall and the bottom wall of the base 12 respectively; the center holes of the first tube body 12c and the second tube body 12d are collinear and respectively penetrate into the center hole of the base 12; the detonating cord 11 is installed in the center hole of the first tube body 12c; the electric detonating source 9 is installed in the center hole of the second tube body 12d.

[0055] The working principle of the safety device provided in the second embodiment is as follows:

[0056] In the initial state, the second brake pin 16a on the second electric actuator 16 is inserted into the limit through hole 7d of the isolation slide bar 7, and the first brake pin 3a of the first electric actuator 3 is inserted into the safety hole 7c of the isolation slide bar 7, so that the isolation slide bar 7 can be mechanically constrained, so that the isolation slide bar 7 cannot slide, so that the isolation slide bar 7 isolates and blocks the electric detonation source 9 of the explosion sequence from the detonating tube 11. At the same time, the micro switch 19 short-circuits the electric detonation source 9 and grounds it, disconnects the electric detonation source 9 from its detonation circuit, and finally the safety device cannot output detonation.

[0057] When the safety is released, the control circuit of the safety actuator responds to the magnitude of acceleration and determines the duration of acceleration. When the requirements are met, the second electric actuator 16 is powered on. The second electric actuator 16 is actuated to cause the second brake pin 16a to release the mechanical constraint on the isolation slide bar 7, thereby completing the release of the inertia safety.

[0058] The first electric actuator 3 realizes the electric insurance function. After the control circuit of the safety actuator energizes the first electric actuator 3 according to the instruction, the first electric actuator 3 is actuated so that the first brake pin 3a releases another mechanical constraint on the isolation slide rod 7.

[0059] When the second electric actuator 16 and the first electric actuator 3 both release the mechanical constraint of the isolation slide bar 7, the isolation slide bar 7 slides into place under the action of the actuating push spring 8. At this time, the electric detonating source 9, the detonating tube 10, and the detonating tube 11 are in line and conductive. At the same time, the elastic button of the micro switch 19 pushes the lock bolt 18 to be inserted into the locking counterbore 7a. The lock bolt 18 can release the elastic button of the micro switch 19 and switch the micro switch 19, and after the short circuit of the electric detonating source 9 is released, the detonation circuit is connected, so that the detonation signal of the safety actuator is transmitted to the electric detonating source 9, the electric detonating source 9 is detonated and transmitted to the detonating tube 11 through the detonating tube 10, and a detonation is output.

[0060] In the second embodiment, the micro switch 19 is used as the trigger switch, which is not easily affected by static electricity and electromagnetic interference and causes false explosion, and the detonation circuit is more reliable. At the same time, the micro switch 19 is connected to the detonation circuit to realize the short-circuit function of the electric detonation source 9 and the detonation circuit connection function.

[0061] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A safety device for an electromechanical safety actuator, comprising a base (12) and a detonating tube (11) mounted on the base (12); an isolation slide rod (7) is slidably mounted in a central hole of the base (12); and characterized in that: Also included is a trigger switch and a slide bar locking mechanism; An electric detonation source (9) is installed on the machine base (12); a detonator (10) is inserted on the isolation slide bar (7); the trigger switch is connected to the detonation circuit of the electric detonation source (9); A double insurance structure is provided on the machine base (12) for locking the isolation slide bar (7) in the initial state; an actuating push spring (8) is provided in the central hole of the machine base (12); the actuating push spring (8) is in a compressed energy storage state, and its elastic force acts axially on the isolation slide bar (7); When the double insurance structure is released and the actuating push spring (8) pushes the isolation slide bar (7) to slide into place in the center hole of the machine base (12), the electric detonation source (9), the detonator tube (10) and the detonating tube (11) are in line and connected, and the trigger switch is triggered to connect the detonation circuit, and the slide bar locking mechanism locks the isolation slide bar (7) that has slid into place.

2. A safety device for an electromechanical safety actuator as claimed in claim 1, characterized in that: An end cover (13) is provided at the end of the machine base (12); the trigger switch is a reed switch (4) mounted on the end cover (13); when the double insurance structure is released and the isolation slide bar (7) slides into place, the end of the isolation slide bar (7) away from the actuating push spring (8) abuts against the reed switch (4), so that the two reeds of the reed switch (4) are in contact and conduct.

3. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: The slide rod locking mechanism comprises a pin shaft (5) and a first spring (6); an annular protrusion (5a) is integrally formed on the outer cylindrical surface of the pin shaft (5); A pin shaft mounting tube (12a) is integrally formed on the side wall of the machine base (12), and the center hole of the pin shaft mounting tube (12a) is perpendicular to and penetrates the center hole of the machine base (12); the pin shaft (5) is mounted in the center hole of the pin shaft mounting tube (12a), and the outer cylindrical surface of the annular protrusion (5a) is slidably matched with the center hole of the pin shaft mounting tube (12a); An annular cover body (14) is arranged on the end surface of the pin shaft mounting tube (12a); the end of the pin shaft (5) away from the machine base (12) is slidably inserted into the central hole of the annular cover body (14); the first spring (6) is sleeved on the pin shaft (5), and one end of the first spring (6) abuts against the annular protrusion (5a), and the other end abuts against the annular cover body (14); the first spring (6) is in a compressed energy storage state and pushes the pin shaft (5) to abut against the isolation slide rod (7); A locking countersunk hole (7a) is provided on the isolation slide bar (7); when the isolation slide bar (7) slides into place in the center hole of the machine base (12), the first spring (6) pushes the pin shaft (5) to be inserted into the locking countersunk hole (7a).

4. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: In the double insurance structure, one is the first electric actuator (3) and the other is the slider (1); A slider mounting tube (12b) is integrally formed on the machine base (12); the slider (1) is slidably mounted in the slider mounting tube (12b); a limit column (1a) is provided at one end of the slider (1), and a spring mounting column (1b) is provided at the other end; A stop cover (15) is arranged on the end surface of the slider mounting tube (12b); a second spring (2) is sleeved on the spring mounting column (1b), and one end of the second spring (2) abuts against the stop cover (15) and the other end abuts against the slider (1); the second spring (2) is in a compressed energy storage state; A first brake pin (3a) is provided on the first electric actuator (3); A limit groove (7b) is provided on one end of the isolation slide bar (7) away from the actuating push spring (8); and a safety hole (7c) is provided on the isolation slide bar (7); In the initial state, the limiting column (1a) is inserted into the limiting groove (7b); and the first brake pin (3a) is inserted into the safety hole (7c).

5. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: In the double insurance structure, one of them is a first electric actuator (3) and the other is a second electric actuator (16); A first brake pin (3a) is provided on the first electric actuator (3); A second brake pin (16a) is provided on the second electric actuator (16); A limit through hole (7d) is provided on one end of the isolation slide bar (7) away from the actuating push spring (8); and a safety hole (7c) is provided on the isolation slide bar (7); In the initial state, the second brake pin (16a) is inserted into the limiting through hole (7d); and the first brake pin (3a) is inserted into the safety hole (7c).

6. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: A push spring pressure cover (17) is provided at the end of the machine base (12), and a push spring mounting column (17a) is integrally formed on the push spring pressure cover (17); one end of the actuating push spring (8) is sleeved on the push spring mounting column (17a), and the other end is mounted in a countersunk hole on the end surface of the isolation slide rod (7).

7. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: The slide bar locking mechanism comprises a lock bolt (18) slidably inserted on the machine base (12); the trigger switch is a micro switch (19); and a locking countersunk hole (7a) is provided on the isolation slide bar (7); The lock bolt (18) is installed at the front end of the elastic button of the micro switch (19), and the elastic button of the micro switch (19) always generates an axial thrust on the lock bolt (18) and pushes the lock bolt (18) against the isolation slide bar (7); the end surface of the top tightening end of the lock bolt (18) is set as a spherical surface; When the isolation slide bar (7) slides into place in the central hole of the machine base (12), the elastic button of the micro switch (19) pushes the lock bolt (18) to be inserted into the locking countersunk hole (7a).

8. The safety device of an electromechanical safety actuator according to claim 7, characterized in that: The micro switch (19) is internally a single-pole double-throw switch; In the initial state, the micro switch (19) short-circuits the electric detonation source (9) and connects it to the ground; When the isolation slide bar (7) slides into place in the center hole of the machine base (12), the lock bolt (18) is inserted into the locking counterbore (7a), and the elastic button switches the micro switch (19), thereby releasing the short circuit of the electric detonation source (9) and connecting the detonation circuit.

9. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: The central hole of the machine base (12) is a rectangular hole, and the isolation slide rod (7) is a prism with a rectangular cross section.

10. The safety device of an electromechanical safety actuator according to claim 1, characterized in that: A first tube body (12c) and a second tube body (12d) are respectively integrally formed on the top wall and the bottom wall of the machine base (12); The central holes of the first tube body (12c) and the second tube body (12d) are collinear and respectively penetrate the central hole of the machine base (12); The detonating tube (11) is installed in the central hole of the first tube body (12c); The electric detonation source (9) is installed in the central hole of the second tube body (12d).

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