A distribution box switch that can automatically cut off power during earthquakes

Abstract

The present invention relates to the field of blockchain technology and discloses a distribution box switch capable of automatically shutting off power in the event of an earthquake. The switch comprises an installation box, an adjustable placement mechanism mounted on the top left side of the installation box, a rolling ball mounted on the adjustable placement mechanism, a drop guide mounted on the right side of the adjustable placement mechanism, a cut-off mechanism mounted on the drop guide, a feeding mechanism mounted on the right side of the installation box bottom, a lifting guide mounted above the feeding mechanism, a lifting mechanism mounted on the right side of the lifting guide, a reset mechanism mounted on the lifting guide, the reset mechanism comprising an arc-shaped anti-slip pad mounted in the middle of the lifting guide, a reset rod mounted within the arc-shaped anti-slip pad, and a first spring mounted on the reset rod. The rolling ball provided in the present invention, when dropped during an earthquake, acts on the cut-off mechanism, causing the cut-off mechanism to automatically disconnect the power supply. The lifting mechanism can reset the rolling ball and connect the power supply, thereby achieving intelligent, efficient, and highly practical application.

Description

Technical Field

[0001] The present invention relates to the field of blockchain technology, and in particular to a distribution box switch that can automatically cut off power during an earthquake. Background Art

[0002] Blockchain technology is a new distributed infrastructure and computing method that uses block chain data structures to verify and store data, distributed node consensus algorithms to generate and update data, cryptography to ensure the security of data transmission and access, and smart contracts composed of automated script codes to program and operate data. When blockchain devices are working, they require a distribution box for power supply.

[0003] The manufacturing of existing distribution boxes is relatively simple. They cannot automatically cut off the power during an earthquake. Some distribution boxes that can automatically cut off the power cannot automatically recover. Most of them require workers to maintain and recover, which does not meet the requirements of intelligent manufacturing. In addition, most of the existing distribution boxes that can automatically cut off the power use multiple sensors to work together to achieve power outages, resulting in high costs for the distribution boxes and inconvenience for subsequent maintenance work.

[0004] In response to the above problems, the present invention proposes a distribution box switch that can automatically cut off power during an earthquake. The switch has the advantages of being able to automatically cut off power and automatically restore power, low manufacturing cost, and convenient subsequent maintenance. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A distribution box switch that can automatically cut off power in the event of an earthquake includes an installation box, an adjustable placement mechanism is installed at the top left side of the installation box, a rolling ball is placed on the adjustable placement mechanism, a falling guide plate is installed on the right side of the adjustable placement mechanism, a cutting mechanism is installed on the falling guide plate, a feeding mechanism is installed on the right side of the bottom end of the installation box, a lifting guide plate is installed above the feeding mechanism, a lifting mechanism is installed on the right side of the lifting guide plate, a reset mechanism is installed on the lifting guide plate, the reset mechanism includes an arc-shaped anti-slip pad, the arc-shaped anti-slip pad is installed in the middle of the lifting guide plate, a reset rod is installed inside the arc-shaped anti-slip pad, and a first spring is sleeved on the reset rod.

[0007] Preferably, the adjustable placement mechanism includes a mounting plate, which is fixed to the top left side of the mounting box, and an arc-shaped supporting pad is installed on the side wall of the mounting box above the mounting plate, the supporting pad is made of rubber, a telescopic rod is installed at the bottom middle end of the supporting pad, a fixing screw is installed on the telescopic rod, and scale lines are engraved on the telescopic rod, a slide rail is installed at the bottom front end of the supporting pad, a support rod is installed at the front side of the mounting plate, a slider is fixedly installed at the top of the support rod, and the slider is slidably installed in the slide rail.

[0008] Preferably, the cutting mechanism includes a mounting shaft, which is mounted in the middle of the falling guide plate, a mounting rod is mounted on the mounting shaft, a connecting rod is mounted on the right side of the mounting rod, a conductive block is rotatably mounted on the bottom end of the connecting rod, a first mounting groove is opened on the right side of the falling guide plate, a conductive column is mounted in the first mounting groove, the conductive block acts on the conductive column, a fixed plate is mounted on the left side of the falling guide plate, a second spring is connected to the left end of the fixed plate and the right end of the mounting rod, the left end of the mounting rod is on the left side of the falling guide plate, and the reset rod acts on the mounting rod.

[0009] Preferably, the feeding mechanism includes a second mounting groove, which is opened at the bottom end of the right side of the mounting box. A push rod motor is installed in the second mounting groove, a push plate is installed on the push rod of the push rod motor, the bottom section of the mounting box is inclined, and a limit plate is installed on the right side of the second mounting groove, and a control button is embedded in the limit plate.

[0010] Preferably, the lifting mechanism includes a sleeve, which is symmetrically arranged on the right side wall of the installation box, a sleeve rod is slidably installed in the sleeve, a third spring is installed between the sleeve rod and the sleeve, a drive motor is fixedly installed on the sleeve rod at the top of the installation box, a transmission roller is installed on the drive shaft of the drive motor, and a transmission roller is also rotatably installed on the sleeve rod at the bottom of the installation box, a transmission belt is installed between the transmission rollers, and a support plate is connected between the sleeve rods, and the support plate is between the transmission belts and supports the transmission belts.

[0011] Preferably, a backup battery is installed at the bottom of the installation box, and the backup battery is electrically connected to the push rod motor, drive motor and control button. The left side of the top of the lifting guide plate is above the adjustable placement mechanism, and the bottom end of the lifting guide plate is an arc structure and tilted to the left end.

[0012] Beneficial effects

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This blockchain-based earthquake-proof distribution box switch can adjust the curvature of the arc-shaped support pad by changing the length of the telescopic rod in the adjustable placement mechanism, and thus can control the rolling ball placed on the support pad to fall at different earthquake magnitudes. Therefore, the rolling ball can be controlled to fall when the set earthquake magnitude is reached, acting on the cut-off mechanism, causing the cut-off mechanism to work and perform a power-off operation. The set adjustable placement mechanism can perform a power-off operation at different earthquake magnitudes.

[0015] 2. The blockchain-based distribution box switch that can automatically cut off the power during an earthquake, when the ball falls, acts on the left end of the mounting rod in the cutting mechanism, causing the left end of the mounting rod to move downward, and at the same time, the right end of the mounting rod to move upward. The mounting rod drives the connecting rod to move upward, so that the conductive block at the bottom end of the connecting rod is separated from the conductive column in the first mounting groove, thereby performing a power-off operation. At the same time, when resetting, the ball rises on the lifting guide plate under the action of the lifting mechanism, so that the ball acts on the arc-shaped anti-slip pad in the reset mechanism, squeezing the reset rod so that the reset rod acts on the connecting rod, causing the connecting rod to move downward, so that the conductive block on the connecting rod is connected to the conductive column, thereby realizing automatic power-off and automatic recovery operations.

[0016] 3. This blockchain-based earthquake-proof distribution box switch can automatically cut off the power supply to distribution boxes of different earthquake magnitudes through adjustable placement mechanisms, cutting mechanisms, reset mechanisms and other structures. At the same time, it can automatically restore power supply, changing the way some existing distribution boxes use multiple sensors to achieve power-off functions, greatly reducing the manufacturing cost of distribution boxes, and facilitating subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the working state of the lifting mechanism of the present invention;

[0019] Figure 3 For the present invention Figure 2 A in the middle is an enlarged schematic diagram;

[0020] Figure 4 For the present invention Figure 2 The enlarged schematic diagram of point B in the middle;

[0021] Figure 5 For the present invention Figure 2 Enlarged schematic diagram at point C in the middle;

[0022] Figure: 1. Mounting box; 2. Adjustable placement mechanism; 201. Mounting plate; 202. Support pad; 203. Telescopic rod; 204. Fixing screw; 205. Scale line; 206. Slide rail; 207. Support rod; 208. Slider; 3. Rolling ball; 4. Drop guide; 5. Cutting mechanism; 501. Mounting shaft; 502. Mounting rod; 503. Connecting rod; 504. Conductive block; 505. First mounting slot; 506. Conductive column; 507. Fixing plate; 508. Second spring; 6. Loading Mechanism; 601, second mounting slot; 602, push rod motor; 603, push rod; 604, push plate; 605, limit plate; 606, control button; 7, lifting guide plate; 8, lifting mechanism; 801, sleeve; 802, sleeve rod; 803, drive motor; 804, drive shaft; 805, transmission roller; 806, transmission belt; 807, support plate; 808, third spring; 9, reset mechanism; 901, anti-slip pad; 902, reset rod; 903, first spring; 10, spare battery. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1 、 3 And 4, a distribution box switch that can automatically cut off power during an earthquake, including an installation box 1, an adjustable placement mechanism 2 is installed at the top left side of the installation box 1, a rolling ball 3 is placed on the adjustable placement mechanism 2, a falling guide plate 4 is installed on the right side of the adjustable placement mechanism 2, and a cutting mechanism 5 is installed on the falling guide plate 4, a feeding mechanism 6 is installed on the right side of the bottom end of the installation box 1, a lifting guide plate 7 is installed above the feeding mechanism 6, a lifting mechanism 8 is installed on the right side of the lifting guide plate 7, and a reset mechanism 9 is installed on the lifting guide plate 7. The reset mechanism 9 includes an arc-shaped anti-slip pad 901, the arc-shaped anti-slip pad 901 is installed in the middle of the lifting guide plate 7, a reset rod 902 is installed inside the arc-shaped anti-slip pad 901, and a first spring 903 is sleeved on the reset rod 902.

[0025] The adjustable placement mechanism 2 includes a mounting plate 201, which is fixed to the top left side of the mounting box 1. An arc-shaped support pad 202 is installed on the side wall of the mounting box 1 above the mounting plate 201. The support pad 202 is made of rubber. A telescopic rod 203 is installed at the bottom middle end of the support pad 202. A fixing screw 204 is installed on the telescopic rod 203. A scale line 205 is engraved on the telescopic rod 203. A slide rail 206 is installed at the bottom front end of the support pad 202. A support rod 207 is installed on the front side of the mounting plate 201. A slider 208 is fixedly installed at the top of the support rod 207, and the slider 208 is slidably installed in the slide rail 206.

[0026] By adjusting the height of the telescopic rod 203 at the bottom end of the middle of the mounting plate 201, the telescopic rod 203 acts on the arc-shaped support pad 202 to adjust the curvature of the arc-shaped support pad 202, thereby controlling the magnitude of the shock when the ball 3 placed on the support pad 202 falls. The higher the magnitude, the shorter the length of the telescopic rod 203 and the greater the curvature of the arc-shaped support pad 202. On the contrary, the longer the length of the telescopic rod 203, the scale line 205 set on the telescopic rod 203 can facilitate the staff to adjust;

[0027] The cutting mechanism 5 includes a mounting shaft 501, which is mounted in the middle of the falling guide plate 4. A mounting rod 502 is mounted on the mounting shaft 501. A connecting rod 503 is mounted on the right side of the mounting rod 502. A conductive block 504 is rotatably mounted on the bottom end of the connecting rod 503. A first mounting groove 505 is provided on the right side of the falling guide plate 4. A conductive column 506 is mounted in the first mounting groove 505. The conductive block 504 acts on the conductive column 506. A fixed plate 507 is mounted on the left side of the falling guide plate 4. A second spring 508 is connected to the left end of the fixed plate 507 and the right end of the mounting rod 502. The left end of the mounting rod 502 is on the left side of the falling guide plate 4, and the reset rod 902 acts on the mounting rod 502.

[0028] When the set earthquake magnitude is reached, the ball 3 falls from the arc-shaped support pad 202, causing the ball 3 to fall along the falling guide plate 4. When the ball 3 passes through the cutting mechanism 5, it acts on the left end of the mounting rod 502, causing the left end of the mounting rod 502 to fall, causing the right end of the mounting rod 502 to move up. The second spring 508 arranged between the fixing plate 507 and the right end of the mounting rod 502 makes the connecting rod 503 only in two states, the upper end of the connecting rod 503 is attached to the falling guide plate 4 or the lower end of the connecting rod 503 is attached to the falling guide plate 4. In the initial state, the conductive block 504 at the bottom end of the connecting rod 503 is in the first mounting groove 50 5, so that the circuit is connected, the ball 3 acts on the mounting rod 502 so that the top end of the connecting rod 503 is attached to the falling guide plate 4, so that the conductive block 504 is separated from the conductive column 506, so that the circuit is disconnected; when resetting, the ball 3 moves on the lifting guide plate 7 under the action of the lifting mechanism 8, so that the ball 3 acts on the arc-shaped anti-slip pad 901 in the reset mechanism 9, so that the reset rod 902 in the arc-shaped anti-slip pad 901 acts on the bottom end of the connecting rod 503, so that the connecting rod 503 is reset again, and the conductive block 504 at the bottom end of the connecting rod 503 acts on the conductive column 506 again, so that the circuit is connected.

[0029] Example 2: Please refer to Figure 1-5 A distribution box switch that can automatically cut off power during an earthquake includes an installation box 1, an adjustable placement mechanism 2 is installed on the top left side of the installation box 1, a rolling ball 3 is placed on the adjustable placement mechanism 2, a falling guide plate 4 is installed on the right side of the adjustable placement mechanism 2, and a cutting mechanism 5 is installed on the falling guide plate 4, a feeding mechanism 6 is installed on the right side of the bottom end of the installation box 1, a lifting guide plate 7 is installed above the feeding mechanism 6, a lifting mechanism 8 is installed on the right side of the lifting guide plate 7, and a reset mechanism 9 is installed on the lifting guide plate 7. The reset mechanism 9 includes an arc-shaped anti-slip pad 901, which is installed in the middle of the lifting guide plate 7, and a reset rod 902 is installed inside the arc-shaped anti-slip pad 901. The reset rod 902 is sleeved with a first spring 903.

[0030] The adjustable placement mechanism 2 includes a mounting plate 201, which is fixed to the top left side of the mounting box 1. An arc-shaped support pad 202 is installed on the side wall of the mounting box 1 above the mounting plate 201. The support pad 202 is made of rubber. A telescopic rod 203 is installed at the bottom middle end of the support pad 202. A fixing screw 204 is installed on the telescopic rod 203. A scale line 205 is engraved on the telescopic rod 203. A slide rail 206 is installed at the bottom front end of the support pad 202. A support rod 207 is installed on the front side of the mounting plate 201. A slider 208 is fixedly installed at the top of the support rod 207, and the slider 208 is slidably installed in the slide rail 206.

[0031] The cutting mechanism 5 includes a mounting shaft 501, which is mounted in the middle of the falling guide plate 4. A mounting rod 502 is mounted on the mounting shaft 501. A connecting rod 503 is mounted on the right side of the mounting rod 502. A conductive block 504 is rotatably mounted on the bottom end of the connecting rod 503. A first mounting groove 505 is provided on the right side of the falling guide plate 4. A conductive column 506 is mounted in the first mounting groove 505. The conductive block 504 acts on the conductive column 506. A fixed plate 507 is mounted on the left side of the falling guide plate 4. A second spring 508 is connected to the left end of the fixed plate 507 and the right end of the mounting rod 502. The left end of the mounting rod 502 is on the left side of the falling guide plate 4, and the reset rod 902 acts on the mounting rod 502.

[0032] The feeding mechanism 6 includes a second mounting slot 601, which is opened at the bottom end of the right side of the mounting box 1. A push rod motor 602 is installed in the second mounting slot 601, and a push plate 604 is installed on the push rod 603 of the push rod motor 602. The bottom section of the mounting box 1 is inclined, and a limit plate 605 is installed on the right side of the second mounting slot 601, and a control button 606 is embedded in the limit plate 605.

[0033] The lifting mechanism 8 includes a sleeve 801, which is symmetrically arranged on the right side wall of the installation box 1. A sleeve rod 802 is slidably installed in the sleeve 801, and a third spring 808 is installed between the sleeve rod 802 and the sleeve 801. A driving motor 803 is fixedly installed on the sleeve rod 802 at the top of the installation box 1, and a transmission roller 805 is installed on the driving shaft 804 of the driving motor 803. A transmission roller 805 is also rotatably installed on the sleeve rod 802 at the bottom of the installation box 1. A transmission belt 806 is installed between the transmission rollers 805, and a support plate 807 is connected between the sleeve rods 802. The support plate 807 is between the transmission belts 806 and supports the transmission belts 806.

[0034] A backup battery 10 is installed at the bottom of the installation box 1, and the backup battery 10 is electrically connected to the push rod motor 602, the drive motor 803 and the control button 606. The left side of the top of the lifting guide plate 7 is above the adjustable placement mechanism 2, and the bottom end of the lifting guide plate 7 is an arc structure and tilted to the left end.

[0035] Working principle:

[0036] By adjusting the height of the telescopic rod 203 at the bottom end of the middle of the mounting plate 201, the telescopic rod 203 acts on the arc-shaped support pad 202 to adjust the curvature of the arc-shaped support pad 202, thereby controlling the magnitude of the shock when the ball 3 placed on the support pad 202 falls. The higher the magnitude, the shorter the length of the telescopic rod 203 and the greater the curvature of the arc-shaped support pad 202. On the contrary, the longer the length of the telescopic rod 203, the scale line 205 set on the telescopic rod 203 can facilitate the staff to adjust;

[0037] When the set earthquake magnitude is reached, the ball 3 falls from the arc-shaped support pad 202, causing the ball 3 to fall along the falling guide plate 4. When the ball 3 passes through the cutting mechanism 5, it acts on the left end of the mounting rod 502, causing the left end of the mounting rod 502 to fall, causing the right end of the mounting rod 502 to move up. The second spring 508 arranged between the fixing plate 507 and the right end of the mounting rod 502 makes the connecting rod 503 only in two states, the upper end of the connecting rod 503 is attached to the falling guide plate 4 or the lower end of the connecting rod 503 is attached to the falling guide plate 4. In the initial state, the conductive block 504 at the bottom end of the connecting rod 503 is in the first mounting groove 50 5, so that the circuit is connected. The ball 3 acts on the mounting rod 502 so that the top end of the connecting rod 503 is attached to the falling guide plate 4, so that the conductive block 504 is separated from the conductive column 506, so that the circuit is disconnected. When resetting, the ball 3 moves on the lifting guide plate 7 under the action of the lifting mechanism 8, so that the ball 3 acts on the arc-shaped anti-slip pad 901 in the reset mechanism 9, so that the reset rod 902 in the arc-shaped anti-slip pad 901 acts on the bottom end of the connecting rod 503, so that the connecting rod 503 is reset again, and the conductive block 504 at the bottom end of the connecting rod 503 acts on the conductive column 506 again, thus connecting the circuit.

[0038] When the ball falls to the bottom of the installation box 1, because the bottom end surface of the installation box 1 is tilted, the ball 3 falls quickly and rolls onto the push plate 604 in the feeding mechanism 6, and at the same time hits the control button 606 in the second installation slot 601 on the limit plate 605. After the set time, about 1 to 3 minutes, when the external earthquake stops, the control button 606 controls the push rod motor 602 to work and drive the push rod 603 to rise. Because the push plate 604 is also tilted, the ball 3 on the push plate 604 will not fall during the rising process of the push plate 604. The push plate 604 pushes the ball 3 between the lifting guide plate 7 and the lifting mechanism 8. Because the distance between the transmission belt 806 in the lifting mechanism 8 and the lifting guide plate 7 is smaller than the diameter of the ball 3, when the ball 3 is pushed between the lifting guide plate 7 and the transmission belt 806 by the push plate 604, The sleeve rod 802 in the lifting mechanism 8 is acted upon, so that the sleeve rod 802 is compressed into the sleeve 801. Under the action of the third spring 808 and the support plate 807, the transmission belt 806 can effectively press the ball 3 between the transmission belt 806 and the lifting guide plate 7. Then the drive motor 803 on the transmission roller 805 works to drive the drive shaft 804 and the transmission roller 805 to rotate, thereby driving the transmission belt 806 to move. The transmission belt 806 drives the ball 3 to move on the lifting guide plate 7, causing the ball 3 to rise. When the ball 3 rises to the highest point, the transmission belt 806 acts on the ball 3 under the action of the third spring 808, causing the ball 3 to move to the left side of the lifting guide plate 7, so that the ball 3 moves along the top of the lifting guide plate 7 to the top of the adjustable placement mechanism 2, and then falls into the support pad 202, completing the reset operation of the ball 3.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A distribution box switch capable of automatically shutting off power in the event of an earthquake, comprising a mounting box (1), characterized in that: The top left side of the installation box (1) is provided with an adjustable placement mechanism (2), a rolling ball (3) is placed on the adjustable placement mechanism (2), a falling guide plate (4) is provided on the right side of the adjustable placement mechanism (2), a cutting mechanism (5) is provided on the falling guide plate (4), a feeding mechanism (6) is provided on the right side of the bottom end of the installation box (1), a lifting guide plate (7) is provided above the feeding mechanism (6), a lifting mechanism (8) is provided on the right side of the lifting guide plate (7), a reset mechanism (9) is provided on the lifting guide plate (7), and the reset mechanism (9) includes an arc-shaped anti-skid pad (901), an arc-shaped anti-skid pad (901) and a reset mechanism (9). ) is installed in the middle of the lifting guide plate (7), a reset rod (902) is installed inside the arc-shaped anti-slip pad (901), and a first spring (903) is installed on the reset rod (902). The feeding mechanism (6) includes a second installation slot (601), the second installation slot (601) is opened at the bottom end of the right side of the installation box (1), a push rod motor (602) is installed in the second installation slot (601), and a push plate (604) is installed on the push rod (603) of the push rod motor (602). The bottom section of the installation box (1) is inclined, and a limit plate (605) is installed on the right side of the second installation slot (601). The limit plate A control button (606) is embedded in (605), and the lifting mechanism (8) includes a sleeve (801), which is symmetrically arranged on the right side wall of the installation box (1), and a sleeve rod (802) is slidably installed in the sleeve (801), and a third spring (808) is installed between the sleeve rod (802) and the sleeve (801). A driving motor (803) is fixedly installed on the sleeve rod (802) at the top of the installation box (1), and a transmission roller (805) is installed on the driving shaft (804) of the driving motor (803). A transmission roller (805) is also rotatably installed on the sleeve rod (802) at the bottom of the installation box (1). A driving roller (805) and a driving belt (806) are mounted between the driving rollers (805); a support plate (807) is connected between the sleeve rods (802); the support plate (807) is located between the driving belts (806) and supports the driving belts (806); a backup battery (10) is installed at the bottom of the installation box (1); the backup battery (10) is electrically connected to the push rod motor (602), the driving motor (803) and the control button (606); the left side of the top end of the lifting guide plate (7) is located above the adjustable placement mechanism (2); and the bottom end of the lifting guide plate (7) is an arc-shaped structure and tilted toward the left end.

2. The distribution box switch capable of automatically shutting off power during an earthquake according to claim 1, characterized in that: The adjustable placement mechanism (2) comprises a mounting plate (201), the mounting plate (201) being fixed to the top left side of the mounting box (1), an arc-shaped supporting pad (202) being installed on the side wall of the mounting box (1) above the mounting plate (201), the supporting pad (202) being made of rubber, a telescopic rod (203) being installed at the bottom middle end of the supporting pad (202), a fixing screw (204) being installed on the telescopic rod (203), a scale line (205) being engraved on the telescopic rod (203), a slide rail (206) being installed at the bottom front end of the supporting pad (202), a support rod (207) being installed at the front side of the mounting plate (201), a slider (208) being fixedly installed at the top end of the support rod (207), and the slider (208) being slidably installed in the slide rail (206).

3. The distribution box switch capable of automatically shutting off power during an earthquake according to claim 1, characterized in that: The cutting mechanism (5) comprises a mounting shaft (501), the mounting shaft (501) being mounted on the middle part of the falling guide plate (4), a mounting rod (502) being mounted on the mounting shaft (501), a connecting rod (503) being mounted on the right side of the mounting rod (502), a conductive block (504) being rotatably mounted on the bottom end of the connecting rod (503), a first mounting groove (505) being provided on the right side of the falling guide plate (4), a conductive column (506) being mounted in the first mounting groove (505), the conductive block (504) acting on the conductive column (506), a fixing plate (507) being mounted on the left side of the falling guide plate (4), a second spring (508) being connected between the left end of the fixing plate (507) and the right end of the mounting rod (502), the left end of the mounting rod (502) being located on the left side of the falling guide plate (4), and a reset rod (902) acting on the mounting rod (502).

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