CN117842396B - A lever-type power output switching device for unlocking explosive devices - Google Patents

Abstract

The invention relates to a lever type power output switching device for unlocking initiating explosive devices, which aims to solve the problems that a control port of a detector can only control one motor to act and can not simultaneously have two works of site selection and transfer, the invention comprises an initiating explosive device unlocking component, a swinging component, a power switching component, a slow-release component and a side plate, wherein the initiating explosive device unlocking component, the swinging component, the power switching component and the slow-release component are all arranged on the side plate of the detector, and the initiating explosive device unlocking component, the swinging component and the slow-release component are all connected with the power switching component. The scientific load transfer work is mainly realized by site selection and slow release through the swing of an arm lever. The invention can finish two different working demands of site selection and slow release by using one working motor. The invention belongs to the technical field of general sky detection.

Description

A lever-type power output switching device for unlocking explosive devices

Technical Field

The invention relates to a power output switching device, in particular to a lever-type power output switching device for unlocking an explosive device. The invention belongs to the technical field of lunar exploration.

Background Art

During lunar exploration, the scientific payload carried by the lunar probe needs to be transferred from the mounting plate to the lunar surface. To ensure that the scientific payload can be safely transferred to the optimal lunar surface location, the transfer device needs to have both site selection and transfer functions. Since the probe has limited control ports and can only control the movement of one motor, a power switching device is needed to control one motor to complete both site selection and transfer tasks.

Summary of the invention

In order to solve the problem that the control port of the detector can only control the action of one motor and cannot perform both site selection and transfer tasks at the same time, the present invention further proposes a lever-type power output switching device for unlocking pyrotechnics.

The technical solution adopted by the present invention to solve the above problems is:

The present invention includes an pyrotechnic unlocking assembly, a swing assembly, a power switching assembly, a slow-release assembly and a side plate. The pyrotechnic unlocking assembly, the swing assembly, the power switching assembly and the slow-release assembly are all installed on the side plate of the detector. The pyrotechnic unlocking assembly, the swing assembly and the slow-release assembly are all connected to the power switching assembly. The power switching assembly includes a motor, a transmission shaft, a sliding shaft, a push shaft, an angular contact bearing, a first sliding gear, a second sliding gear and a lever. One end of the transmission shaft is slidingly connected to the output shaft of the motor, and the other end of the transmission shaft is slidingly connected to the sliding shaft. The first sliding gear and the second sliding gear are both fixedly mounted on the sliding shaft, and the sliding shaft is connected to the push shaft through an angular contact bearing. One end of the lever is hinged to the side plate through a bracket, the middle part of the lever is connected to the sliding shaft through a pin, and the other end of the lever is connected to the pyrotechnic unlocking assembly.

Furthermore, the transmission shaft is provided with a D-shaped hole that cooperates with the motor output shaft, and the transmission shaft can reciprocate linearly along the outer wall of the motor output shaft; the sliding shaft is provided with a D-shaped hole that cooperates with the transmission shaft, and the sliding shaft can reciprocate linearly along the outer wall of the transmission shaft.

Furthermore, the swing assembly includes a worm wheel, a worm, a swing shaft, an arm, a transmission gear and a first action gear. The first sliding gear is meshed with the transmission gear, the transmission gear is meshed with the first action gear, the first action gear and the worm are fixedly mounted on the same shaft, the worm and the worm wheel cooperate for transmission, the swing shaft is fixedly mounted on the worm wheel, and the arm is rotationally connected to the swing shaft.

Furthermore, the pyrotechnic unlocking assembly includes a capture cap, a spring nut cover, an unlocking spring, a center pressure rod, a bracket, a locking nut, a spherical pad, a pyrotechnic, a ball head fixing plate, a ball head pressure plate, a separation spring, a ball head rod, a locking screw and a tension spring. The pyrotechnic is installed on the bracket by screws, and the lower end of the center pressure rod passes through the bracket, the pyrotechnic, the ball head fixing plate and the ball head pressure plate in sequence. The separation spring is sleeved on the lower part of the center pressure rod and is located in the mounting holes of the ball head fixing plate and the ball head pressure plate. The upper end of the locking screw passes through the ball head pressure plate and is fixedly connected to the lower end of the center pressure rod. The ball head rod is located between the ball head fixing plate and the ball head pressure plate. The upper end of the center pressure rod is fixed to the bracket by a locking nut and a spherical pad. The unlocking spring is sleeved on the locking nut, the spring nut cover is sleeved on the center pressure rod and compresses the unlocking spring, the capture cap is located on the upper part of the spring nut cover and is fixed to the bracket, one end of the tension spring is connected to the shaft end of the first action gear, and the other end of the tension spring is connected to the ball head rod.

Furthermore, the slow-release assembly includes a drum, a slow-release rope, a second action gear, a third action gear and a fourth action gear, the second sliding gear is meshed with the second action gear, the second action gear and the third action gear are fixedly mounted on the same shaft, the third action gear is meshed with the fourth action gear, the fourth action gear and the drum are fixedly mounted on the same shaft, one end of the slow-release rope is connected to the drum, and the other end of the slow-release rope is connected to the end of the arm.

The beneficial effects of the present invention are:

1. The present invention utilizes one working motor to meet two different working requirements of site selection and slow release.

2. The lever-type drive can amplify the driving force after unlocking.

3. While the lever amplifies the force, it also increases the stretching length of the tension spring, which is more conducive to the installation and layout of the tension spring.

4. Explosives act quickly, have short working time and high stability.

5. When controlling on the ground, you only need to detonate the pyrotechnics to complete the power switch, which is simple to operate.

6. After the explosive device is unlocked, no excess material is produced during the operation of the entire device.

7. Power switching is performed by controlling pyrotechnics, which consumes less control resources than motors.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a side view of FIG1;

FIG3 is a schematic diagram of the operation principle of the present invention before power switching;

FIG4 is a schematic diagram of the operation principle of the present invention after power switching;

FIG5 is an isometric view of the overall structure of the present invention;

FIG6 is a front view of the unlocking assembly of the explosive device;

FIG7 is a partial view of FIG6;

FIG8 is a state diagram of the pyrotechnic unlocking assembly before unlocking;

FIG. 9 is a state diagram of the pyrotechnic unlocking assembly after being unlocked.

Among them, the explosive device unlocking assembly 1, the capture cap 1-1, the spring screw cover 1-2, the unlocking spring 1-3, the center pressure rod 1-4, the bracket 1-5, the locking nut 1-6, the spherical pad 1-7, the explosive device 1-8, the ball head fixing plate 1-9, the ball head pressure plate 1-10, the separation spring 1-11, the ball head rod 1-12, the locking screw 1-13, and the tension spring 1-14;

The swing assembly 2 includes a worm wheel 2-1, a worm 2-2, a swing shaft 2-3, an arm 2-4, a transmission gear 2-5, and a first action gear 2-6;

Power switching assembly 3, motor 3-1, transmission shaft 3-2, sliding shaft 3-3, push shaft 3-4, angular contact bearing 3-5, first sliding gear 3-6, second sliding gear 3-7, lever 3-8;

The slow-release assembly 4, the reel 4-1, the slow-release rope 4-2, the second action gear 4-3, the third action gear 4-4 and the fourth action gear 4-5.

DETAILED DESCRIPTION

Specific implementation method 1: Combined with Figures 1 to 9, this implementation method is described. The lever-type power output switching device for unlocking an pyrotechnic product described in this implementation method includes an pyrotechnic product unlocking component 1, a swing component 2, a power switching component 3, a slow-release component 4 and a side plate. The pyrotechnic product unlocking component 1, the swing component 2, the power switching component 3 and the slow-release component 4 are all installed on the side plate of the detector. The pyrotechnic product unlocking component 1, the swing component 2 and the slow-release component 4 are all connected to the power switching component 3. The power switching component 3 It includes a motor 3-1, a transmission shaft 3-2, a sliding shaft 3-3, a push shaft 3-4, an angular contact bearing 3-5, a first sliding gear 3-6, a second sliding gear 3-7 and a lever 3-8. One end of the transmission shaft 3-2 is slidingly connected to the output shaft of the motor 3-1, and the other end of the transmission shaft 3-2 is slidingly connected to the sliding shaft 3-3. The first sliding gear 3-6 and the second sliding gear 3-7 are both fixedly mounted on the sliding shaft 3-3. The sliding shaft 3-3 is connected to the push shaft 3-4 through the angular contact bearing 3-5. One end of the lever 3-8 is hinged to the side plate through a bracket, the middle part of the lever 3-8 is connected to the sliding shaft 3-3 through a pin shaft, and the other end of the lever 3-8 is connected to the pyrotechnic unlocking assembly 1.

The motor 3-1 is fixedly mounted on the side plate of the detector. The motor output shaft and the transmission shaft 3-2 transmit torque through the D-shaped shaft and the D-shaped hole. The sliding shaft 3-3 and the transmission shaft 3-2 also transmit torque through the D-shaped shaft and the D-shaped hole. The first sliding gear 3-6 and the second sliding gear 3-7 are fixedly mounted on the sliding shaft 3-3. The sliding shaft 3-3 can slide back and forth on the transmission shaft 3-2 with the first sliding gear 3-6 and the second sliding gear 3-7. The push shaft 3-4 is connected to the sliding shaft 3-3 through a bearing. The lever 3-8 and the sliding shaft 3-3 are connected through a pin shaft. When the lever 3-8 is unlocked and swung, it can push the push shaft 3-4 to slide, and the push shaft 3-4 then pushes the sliding shaft 3-3 to slide on the transmission shaft 3-2.

Specific implementation method 2: This implementation method is described in conjunction with Figures 1 to 9. In this implementation method, the transmission shaft 3-2 is provided with a D-shaped hole that cooperates with the motor output shaft, and the transmission shaft 3-2 can reciprocate linearly along the outer wall of the motor output shaft; the sliding shaft 3-3 is provided with a D-shaped hole that cooperates with the transmission shaft 3-2, and the sliding shaft 3-3 can reciprocate linearly along the outer wall of the transmission shaft 3-2.

The other components and connection relationships of this embodiment are the same as those of the first embodiment.

Specific implementation method three: This implementation method is described in conjunction with Figures 1 to 9. The swing assembly 2 described in this implementation method includes a worm wheel 2-1, a worm 2-2, a swing shaft 2-3, an arm 2-4, a transmission gear 2-5 and a first action gear 2-6. The first sliding gear 3-6 is meshed with the transmission gear 2-5, the transmission gear 2-5 is meshed with the first action gear 2-6, the first action gear 2-6 and the worm 2-2 are fixedly mounted on the same shaft, the worm 2-2 cooperates with the worm wheel 2-1 for transmission, the swing shaft 2-3 is fixedly mounted on the worm wheel 2-1, and the arm 2-4 is rotationally connected to the swing shaft 2-3.

Before the power switching assembly is activated, the first sliding gear 3-6 is meshed with the transmission gear 2-5, the transmission gear 2-5 is meshed with the first action gear 2-6, the worm 2-2 and the first action gear 2-6 are fixedly mounted on the same shaft, when the action gear 2-6 rotates, the worm 2-2 is driven to rotate together, and the worm wheel 2-1 and the arm 2-4 rotate together under the drive of the worm 2-2.

The other components and connection relationships of this embodiment are the same as those of the first or second embodiment.

Specific embodiment four: This embodiment is described in conjunction with Figures 1 to 9. The pyrotechnic unlocking assembly 1 described in this embodiment includes a capture cap 1-1, a spring screw cover 1-2, an unlocking spring 1-3, a center pressure rod 1-4, a bracket 1-5, a locking nut 1-6, a spherical pad 1-7, a pyrotechnic 1-8, a ball head fixing plate 1-9, a ball head pressure plate 1-10, a separation spring 1-11, a ball head rod 1-12, a locking screw 1-13 and a tension spring 1-14. The pyrotechnic 1-8 is mounted on the bracket 1-5 by screws, and the lower end of the center pressure rod 1-4 passes through the bracket 1-5, the pyrotechnic 1-8, the ball head fixing plate 1-9 and the ball head pressure plate 1-10 in sequence. The separation spring 1-11 is mounted on the lower part of the center pressure rod 1-4 and is located on the ball head fixing plate 1-9 and the mounting hole of the ball head pressure plate 1-10, the upper end of the locking screw 1-13 passes through the ball head pressure plate 1-10 and is fixedly connected with the lower end of the center pressure rod 1-4, the ball head rod 1-12 is located between the ball head fixing plate 1-9 and the ball head pressure plate 1-10, the upper end of the center pressure rod 1-4 is fixed to the bracket 1-5 through the locking nut 1-6 and the spherical pad 1-7, the unlocking spring 1-3 is sleeved on the locking nut 1-6, the spring screw cover 1-2 is sleeved on the center pressure rod 1-4 and compresses the unlocking spring 1-3, the capture cap 1-1 is located on the upper part of the spring screw cover 1-2 and is fixed to the bracket 1-5, one end of the tension spring 1-14 is connected to the shaft end of the first action gear 2-6, and the other end of the tension spring 1-14 is connected to the ball head rod 1-12.

Before the unlocking assembly is actuated, the center pressure rod 1-4 is in an uncut state, the explosive device 1-8 is installed on the bracket 1-5 by screws, the center pressure rod 1-4 passes through the bracket 1-5 and the explosive device 1-8, one end of the center pressure rod 1-4 is pressed on the bracket 1-5 by the locking nut 1-6 through the spherical pad 1-7, and the other end passes through the locking screw 1-13 to press the ball head fixing plate 1-9 and the ball head pressure plate 1-10. At this time, the separation spring 1-11 is in a compressed state, the unlocking spring 1-3 is also compressed by the spring screw cover 1-2, and the ball head rod 1-12 is pressed by the ball head pressure plate 1-10 and the ball head fixing plate 1-9.

After the pyrotechnic unlocking assembly is actuated, the center pressure rod 1-4 is cut off by the pyrotechnic 1-8, the ball head fixing plate 1-9 does not move, and the ball head pressing plate 1-10 moves downward under the force of the separation spring 1-11, and is caught by the bracket 1-5 after moving a certain distance. At this time, the ball head rod 1-12 is released from between the ball head fixing plate 1-9 and the ball head pressing plate 1-10, completing the unlocking action. The other end of the center pressure rod 1-4 moves upward under the elastic force of the unlocking spring 1-3, and is captured by the capture cap 1-1, and no excess material is generated during the unlocking process.

After being unlocked, the ball head rod 1-12 moves in the direction of the tension spring 1-14 under the tension of the tension spring 1-14, and the lower end of the lever is connected to the ball head rod 1-12, and slides with the push shaft 3-4 under the tension of the tension spring 1-14.

When the power is switched, the push shaft 3-4 pushes the sliding shaft 3-3, the first sliding gear 3-6, the second sliding gear 3-7, the bearing 3-5, etc. to slide toward the motor 3-1. The first sliding gear 3-6 is separated from the transmission gear 2-5, and the second sliding gear 3-7 is engaged with the second action gear 4-3. At this point, the action switching is completed.

The other components and connection relationships of this embodiment are the same as those of the first, second or third embodiment.

Specific embodiment five: This embodiment is described in conjunction with Figures 1 to 9. The slow-release assembly 4 in this embodiment includes a drum 4-1, a slow-release rope 4-2, a second action gear 4-3, a third action gear 4-4 and a fourth action gear 4-5. The second sliding gear 3-7 is meshed with the second action gear 4-3, the second action gear 4-3 and the third action gear 4-4 are fixedly mounted on the same shaft, the third action gear 4-4 is meshed with the fourth action gear 4-5, the fourth action gear 4-5 is fixedly mounted on the same shaft as the drum 4-1, one end of the slow-release rope 4-2 is connected to the drum 4-1, and the other end of the slow-release rope 4-2 is connected to the end of the arm 2-4.

The motor 3-1 moves in the reverse direction, the transmission shaft 3-2 drives the sliding shaft 3-3 and the second sliding gear 3-7 to move together, the second sliding gear 3-7 meshes with the second action gear 4-3, the second action gear 4-3 and the third action gear 4-4 are fixedly mounted on the same shaft, the third action gear 4-4 meshes with the fourth action gear 4-5, and the drum 4-1 and the fourth action gear 4-5 are fixedly mounted on the same shaft, so when the motor 3-1 moves, the drum 4-1 also rotates together. When the drum 4-1 rotates, the slow-release rope 4-2 on the drum 4-1 is released, and the arm 2-4 at the other end of the slow-release rope 4-2 swings downward under the action of the lunar gravity. After the arm 2-4 swings into place, the scientific payload completes the transfer work.

The other components and connection relationships of this embodiment are the same as those of the first, second, third or fourth embodiment.

Working process:

The transfer of scientific payloads is mainly achieved through the swing and slow release of arms 2-4. When transferring scientific payloads, site selection must be carried out first. The first step is to determine the best landing point on the moon through the camera carried by the probe. The second step is to drive the motor to drive the swing assembly 2 to move the scientific payload in the direction of the best landing point on the moon. The third step is to remotely control the action of the pyrotechnics, unlock the pyrotechnics unlocking assembly 1, and complete the power switching. The fourth step is to drive the slow-release assembly 4 in reverse to release the slow-release rope, and slowly release the scientific payload to the lunar surface.

The specific steps are as follows:

The main work of transferring the scientific payload carried by the probe to the lunar surface is divided into two parts: swing site selection and slow release landing on the moon. The first step of the transfer is to select the best landing point, which is mainly carried out by the camera carried by the probe. The camera determines the most suitable place to place the scientific payload by observing the state of the lunar surface and determines the swing direction and angle of the swing assembly 2.

After determining the best landing point, the second step of the motor-driven swing assembly action begins. As shown in Figure 3, the action of the motor 3-1 drives the transmission shaft 3-2 to move. The transmission shaft 3-2 and the sliding shaft 3-3 are matched through the D-shaped hole, and the second sliding gear 3-7 and the first sliding gear 3-6 rotate together with the transmission shaft 3-2. The transmission gear 2-5 is meshed with the first sliding gear 3-6 and the first action gear 2-6, and transmits the torque of the motor 3-1 to the first action gear 2-6. The worm 2-2 and the first action gear 2-6 are installed on the same shaft, and the worm 2-2 rotates together with the first action gear 2-6. The worm wheel 2-1 cooperates with the worm 2-2, and the arm 2-4 is installed on the worm wheel 2-1. When the worm 2-2 drives the worm wheel 2-1 to rotate, the arm 2-4 also swings together. When the arm 2-4 swings to a predetermined angle, the site selection work is completed.

Then the third step of unlocking the pyrotechnic unlocking assembly 1 is performed. As shown in Figures 6 to 9, when the pyrotechnic unlocking assembly 1 is unlocked, the pyrotechnic 1-8 first moves to cut off the center pressure rod 1-4. After the center pressure rod 1-4 is cut off, the ball head pressure plate 1-10 moves downward under the elastic force of the separation spring 1-11, and the spring screw cover 1-2 moves upward under the elastic force of the unlocking spring 1-3. As the ball head pressure plate 1-10 moves downward, the ball head on the ball head rod 1-12 can be disengaged from the ball socket on the ball head pressure plate 1-10, and the action of the pyrotechnic unlocking assembly is completed.

As shown in Figure 5, after being unlocked, the ball head rod 1-12 moves in the opposite direction of the tension of the tension spring 1-14. Since one end of the lever 3-8 is fixed, the middle is connected to the push shaft 3-4, and the other end is connected to the ball head rod 1-12, the lever 3-8 drives the push shaft 3-4 to slide under the action of the tension of the tension spring 1-14, and the push shaft 3-4 pushes the sliding shaft 3-3 to slide on the transmission shaft 3-2, disengaging the first sliding gear 3-6 from the transmission gear 2-5, and engaging the second sliding gear 3-7 with the second action gear 4-3.

After the power switch is completed, the fourth step of the scientific payload slow release is carried out. As shown in Figure 4, the motor 3-1 reverses to drive the transmission shaft 3-2 to rotate, the second sliding gear 3-7 meshes with the second action gear 4-3 and drives the second action gear 4-3 to rotate, the second action gear 4-3 and the third action gear 4-4 are installed on the same shaft, and the third action gear 4-4 rotates together. The third action gear 4-4 meshes with the fourth action gear 4-5, and the fourth action gear 4-5 and the drum 4-1 are installed on the same shaft, and the drum 4-1 rotates together. When the drum 4-1 rotates, the slow release rope 4-2 above it will be released. Under the action of the gravity of the lunar surface, the arm 2-4 slowly swings as the slow release rope 4-2 is released, and finally the scientific payload is placed in the predetermined position.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims (2)

1. A lever-type power output switching device for unlocking an explosive device, characterized in that: the lever-type power output switching device for unlocking an explosive device comprises an explosive device unlocking component (1), a swing component (2), a power switching component (3), a slow-release component (4) and a side plate, the explosive device unlocking component (1), the swing component (2), the power switching component (3) and the slow-release component (4) are all installed on the side plate of the detector, the explosive device unlocking component (1), the swing component (2) and the slow-release component (4) are all connected to the power switching component (3), the power switching component (3) comprises a motor (3-1), a transmission shaft (3-2), a sliding shaft (3-3), a push shaft (3-4), an angular contact bearing (3-5), a first sliding gear (3-6), a second sliding gear (3-7) and a lever (3-8), one end of the transmission shaft (3-2) is slidably connected to the output shaft of the motor (3-1), the other end of the transmission shaft (3-2) is slidably connected to the sliding shaft (3-3), the first sliding gear (3-6) and the second sliding gear (3-7) are both fixedly sleeved on the sliding shaft (3-3), the sliding shaft (3-3) is connected to the push shaft (3-4) through an angular contact bearing (3-5), one end of the lever (3-8) is hinged to the side plate through a bracket, the middle part of the lever (3-8) is connected to the sliding shaft (3-3) through a pin shaft, and the other end of the lever (3-8) is connected to the pyrotechnic unlocking component (1); The swing assembly (2) comprises a worm wheel (2-1), a worm (2-2), a swing shaft (2-3), an arm (2-4), a transmission gear (2-5) and a first action gear (2-6); the first sliding gear (3-6) is meshed with the transmission gear (2-5); the transmission gear (2-5) is meshed with the first action gear (2-6); the first action gear (2-6) and the worm (2-2) are fixedly mounted on the same shaft; the worm (2-2) and the worm wheel (2-1) cooperate for transmission; the swing shaft (2-3) is fixedly mounted on the worm wheel (2-1); and the arm (2-4) is rotationally connected to the swing shaft (2-3); The pyrotechnic unlocking assembly (1) comprises a capture cap (1-1), a spring nut cover (1-2), an unlocking spring (1-3), a central pressure rod (1-4), a bracket (1-5), a locking nut (1-6), a spherical pad (1-7), a pyrotechnic (1-8), a ball head fixing plate (1-9), a ball head pressing plate (1-10), a separation spring (1-11), a ball head rod (1-12), a locking screw (1-13) and a tension spring (1-14). The pyrotechnic (1-8) is mounted on the bracket (1-5) by screws. The lower end of the central pressure rod (1-4) passes through the bracket (1-5), the pyrotechnic (1-8), the ball head fixing plate (1-9) and the ball head pressing plate (1-10) in sequence. The separation spring (1-11) is sleeved on the lower part of the central pressure rod (1-4) and is located between the ball head fixing plate (1-9) and the ball head pressing plate (1-10). 0), the upper end of the locking screw (1-13) passes through the ball head pressure plate (1-10) and is fixedly connected to the lower end of the central pressure rod (1-4), the ball head rod (1-12) is located between the ball head fixing plate (1-9) and the ball head pressure plate (1-10), the upper end of the central pressure rod (1-4) is fixed to the bracket (1-5) through the locking nut (1-6) and the spherical pad (1-7), the unlocking spring (1-3) is sleeved on the locking nut (1-6), the spring screw cover (1-2) is sleeved on the central pressure rod (1-4) and compresses the unlocking spring (1-3), the capture cap (1-1) is located on the upper part of the spring screw cover (1-2) and is fixed to the bracket (1-5), one end of the tension spring (1-14) is connected to the shaft end of the first action gear (2-6), and the other end of the tension spring (1-14) is connected to the ball head rod (1-12); The slow-release assembly (4) comprises a drum (4-1), a slow-release rope (4-2), a second action gear (4-3), a third action gear (4-4) and a fourth action gear (4-5); the second sliding gear (3-7) is meshed with the second action gear (4-3); the second action gear (4-3) and the third action gear (4-4) are fixedly mounted on the same shaft; the third action gear (4-4) is meshed with the fourth action gear (4-5); the fourth action gear (4-5) and the drum (4-1) are fixedly mounted on the same shaft; one end of the slow-release rope (4-2) is connected to the drum (4-1); and the other end of the slow-release rope (4-2) is connected to the end of the arm (2-4). 2. A lever-type power output switching device for unlocking an explosive device according to claim 1, characterized in that: the transmission shaft (3-2) is provided with a D-shaped hole that cooperates with the motor output shaft, and the transmission shaft (3-2) can reciprocate linearly along the outer wall of the motor output shaft; the sliding shaft (3-3) is provided with a D-shaped hole that cooperates with the transmission shaft (3-2), and the sliding shaft (3-3) can reciprocate linearly along the outer wall of the transmission shaft (3-2).