CN107421401B

CN107421401B - Training device for throwing grenades

Info

Publication number: CN107421401B
Application number: CN201710257989.8A
Authority: CN
Inventors: 马磊; 倪胜巧
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2017-04-19
Filing date: 2017-04-19
Publication date: 2023-02-17
Anticipated expiration: 2037-04-19
Also published as: CN107421401A

Abstract

A training device for throwing grenades comprises a grenade shell body, a detection unit, a voltage stabilizing unit, a charging socket, a wireless receiving unit, a first alarm unit, a second alarm unit and a timer, wherein the grenade shell body consists of a shell and a counterweight block, the detection unit consists of a shell body and a shell cover, a battery box, a power switch, a trigger probe, a time circuit, a first wireless transmitting facility, a second wireless transmitting facility and a reset circuit, the battery box, the power switch, the trigger probe, the time circuit, the first wireless transmitting facility, the second wireless transmitting facility and the reset circuit are connected through leads and installed in the shell body, the shell body is installed on the shell body of the grenade shell body, and the voltage stabilizing unit, the wireless receiving unit, the first alarm unit, the second alarm unit, the charging socket and the timer are connected through leads and installed in a plastic box. The invention can visually prompt that the throwing time is too early or too late and can display the specific late or early time. Has good application prospect.

Description

Training device for throwing grenades

Technical Field

The invention relates to the field of army training equipment, in particular to a training device for throwing grenades, which can achieve a good training effect.

Background

The grenade is used as an important individual combat weapon, and is widely applied to actual combat because of convenient carrying and strong killing power to enemies, and the grenade delays a certain time from the pulling of a guy rope by a thrower to the explosion of a projectile body when in use so that the thrower throws the grenade to the enemies within the delayed time period to kill the enemies in area; in actual combat, when a thrower throws the grenade out early, the grenade cannot explode because the delay time is not yet reached after the grenade reaches an enemy, so that the enemy has enough time to avoid and cannot effectively kill the enemy, the actual combat effect cannot be achieved, and the grenade is picked up by a fighter with good psychological quality of the enemy and thrown against the enemy, so that the serious injury can be brought to the enemy; when the throwing time of the grenade of the thrower is too late, the grenade can explode if not reaching the enemy, so that the enemy can not be effectively killed and killed, and the actual combat effect can not be achieved; based on the above, it is very important to provide a grenade throwing training device which has a good training effect and is used by troops. The existing grenade throwing training equipment only has the function of prompting a thrower through a sound when the grenade is thrown for training, namely only has a delay circuit, when the time of the delay circuit is up, the sound emitted by a loudspeaker represents that the delay time of the grenade is up, the grenade explodes, if a grenade model does not fall to the ground yet and the sound emitted by the loudspeaker represents that the grenade is thrown earlier, the sound emitted by the loudspeaker represents that the grenade is thrown late after the grenade model falls to the ground, in the actual training, the grenade model is far in throwing distance and high in speed, and after the thrower hears the sound emitted by the loudspeaker, the grenade model cannot be reliably and visually mastered whether the grenade model is thrown earlier or later, namely when the loudspeaker emits the sound, the grenade model falls to the ground or does not fall to the ground, and the defects are more prominent particularly under the condition of bad weather; more importantly, a thrower cannot intuitively know how much time the grenade model is thrown earlier, and how much time the grenade model is thrown later, and cannot provide reliable data for timely adjustment according to the time thrown in advance or the time delayed in the next throwing training, so that a good training effect cannot be achieved.

Disclosure of Invention

In order to overcome the defects that the existing grenade throwing training equipment only has the function of prompting a thrower through a sound box when the grenade is thrown for training, in actual training, the throwing distance of a grenade model is long, the speed is high, the thrower cannot reliably, visually and intuitively know whether the grenade model is thrown early or late after hearing the sound emitted by a loudspeaker, the training defect is more obvious under the condition of bad weather conditions, the thrower cannot intuitively know the specific throwing time of the grenade model early and the specific throwing time late, and cannot provide reliable data for timely adjusting according to the advanced throwing time or delayed throwing time in the next throwing training, and the good training effect cannot be achieved, the invention provides the grenade casing and the detection unit which are divided into two parts, the weight of the grenade casing is close to that the common grenade, the grenade casing and the common grenade are connected through threads, and when one part is damaged, the other part can be used normally, the training cost is saved, when the grenade is thrown for training, the throwing time of the shell of the grenade of a thrower can be judged, when the throwing time of the thrower is too early, the other part can have enough time to avoid or pick up the grenade to the other part in actual combat and damage the other part, under the action of the wireless receiving unit, the second alarm unit can give out sound and light to visually prompt the throwing time of the thrower to be advanced, and can also be used for timing through a timer to visually display the time advanced by the grenade so as to enable the thrower to visually master data, when the shell of the thrower is thrown for the second time according to the time advanced by the first throwing, the optimum training effect and the optimum combat effect can be achieved, when the grenade of the thrower is too late, the grenade can be caused in actual combat, the grenade can not reach the enemy, the grenade can not reach the combat effect, and the grenade can not reach the effect, even if the grenade is damaged by the user, under the action of the wireless receiving unit, the first alarm unit can give out sound and light to visually prompt the throwing time of the thrower to be delayed, the timer can also be used for timing to visually display the delayed time so that the thrower can visually master data, and the grenade is thrown in advance for a certain time according to the delayed time of the first throwing when the grenade shell is thrown for the second time so as to achieve the best training effect and the best combat effect during wartime.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a training device for throwing grenades is composed of a shell body consisting of casing and weight block, voltage stabilizer, charging socket, radio receiving unit, the first and the second alarm units, timer, and the first and the second alarm units, a voltage regulator, a charging socket, a radio receiving unit, a first and a second alarm units, and a power supply The second positive power input end of the reset circuit is connected through a lead, the positive power output end of the trigger probe is connected with the positive power input end of the second wireless transmitting facility through a lead, the cathode of the battery is encapsulated with the cathode power input end of the time circuit, the cathode power input end of the first wireless transmitting facility, the cathode power input end of the second wireless transmitting facility and the cathode power input end of the reset circuit through leads, the shell is encapsulated by silicon rubber, after encapsulation, the lower part of the battery box, the lower part of the power switch, the trigger probe, the time circuit, the first wireless transmitting facility, the second wireless transmitting facility and the reset circuit are positioned in the silicon rubber, the upper cover of the battery box and the operating handle of the power switch are positioned on the upper part of the silicon rubber, the battery is positioned in the battery box, the battery can be placed in the battery box on the sealed silicon rubber, and the operating handle of the power switch can be operated on the sealed silicon rubber, the casing of the detection unit is arranged in the hollow cylindrical part of the shell of the bullet casing by screwing the right-handed external thread at the outer side end of the casing of the detection unit into the right-handed internal thread at the hollow cylindrical part of the shell of the bullet casing, after the casing is completely screwed into the shell, the height of the upper end of the casing is consistent with that of the upper end of the shell, the left-handed external thread of the casing cover of the detection unit is screwed into the left-handed internal thread of the casing of the detection unit, the casing cover is arranged at the upper part of the casing, the voltage stabilizing unit, the wireless receiving unit, the first alarm unit and the second alarm unit are welded on a circuit board through tin, the charging socket and the timer are arranged in a plastic box, the upper end of the front part of the plastic box is provided with five openings from left to right, the left part and the right part of the front lower end of the plastic box are respectively provided with two openings, the front ends of the two openings are provided with metal mesh covers, and the right end of the plastic box is provided with one opening, the upper left part of the rear side of the plastic box is provided with an opening, the middle part of the lower front end of the plastic box is provided with an opening, the positive power input end of the voltage stabilizing unit is connected with one end of the charging socket through a wire, the positive power output end of the voltage stabilizing unit is connected with the positive power input end of the timer through a wire, the positive power input end of the wireless receiving unit is connected with the positive power input end of the first alarm unit through a wire, the second positive power output end of the wireless receiving unit is connected with the positive power input end of the second alarm unit through a wire, the negative power output end of the voltage stabilizing unit is connected with the other end of the charging socket, the negative power input end of the wireless receiving unit, the negative power input end of the first alarm unit, the negative power input end of the second alarm unit and the negative power input end of the charging socket are grounded through wires, and the control signal output ends of the first alarm unit, the control signal output ends of the second alarm unit and the two power contacts under the start/stop key on the timer are respectively connected through wires.

After the power switch of the detection unit is installed in the shell, a user can operate the operating handle of the power switch through the opening in the middle of the shell cover outside the shell, so that the power switch is turned on and off.

The battery of the detection unit is a lithium storage battery, the voltage is 12V, and the model is QC-12V-1.1Ah-PVC52-38-22.

The upper end of the battery box of the detection unit is provided with a cover, so that a battery can be conveniently placed in the battery box, the battery is placed in the battery box, the left-handed external thread of the shell cover of the detection unit is screwed into the left-handed internal thread of the shell of the detection unit, the upper end of the battery is just contacted with the lower part of the shell cover, and the battery is prevented from shaking in the battery box.

The trigger probe of the detection unit consists of a vibration sensor, a resistor and a one-way silicon controlled rectifier, wherein the vibration sensor consists of an outer shell, an inner shell, a spring, a contact ball, a base plate, a circular cover, a nut seat and an adjusting rod, the outer shell is made of plastic, the upper end of the right side of the outer shell is provided with an opening, the upper end inside the outer shell is provided with an internal thread, the inner shell, the spring, the contact ball, the base plate, the circular cover, the nut seat and the adjusting rod are made of copper materials, the lower part of the inner shell is in a pointed cone shape, the upper part outside the inner shell is sleeved below the internal thread of the upper end inside the outer shell, the upper end inside the outer shell and the upper part outside the inner shell are in an interference fit state, silicon rubber is filled and sealed between the lower end inside the outer shell and the lower end outside the inner shell, the base plate is circular, the contact ball is welded at the lower part of the spring, the upper part of the spring is welded at the lower part of the base plate, the adjusting rod is provided with external threads from top to bottom, the lower part of the adjusting rod is welded on the upper part of the base plate, the outer side of the annular cover is provided with external threads, the middle part of the annular cover is provided with an opening, the nut seat is welded on the opening in the middle part of the annular cover, the upper part threads of the adjusting rod are screwed into the internal threads of the nut seat, the external threads from top to bottom pass through the outer side of the annular cover are screwed into the internal threads at the upper end in the outer shell, the annular cover is arranged at the upper end in the outer shell, after the annular cover is arranged, the upper part of the adjusting rod is positioned at the outer side of the upper part of the outer shell, the uppermost end of the adjusting rod is welded with a circular adjusting handle, one conducting wire is connected with the inner shell and is led out from the opening at the upper end on the right side of the outer shell, the other conducting wire is connected with the nut seat, when the adjusting rod rotates clockwise along the nut seat, the contact ball can move downwards, and under the condition of small external impact force, the contact ball can be contacted with the inner side of the inner shell, when adjusting the pole along nut seat anticlockwise rotation, the contact ball can the upward movement, under the big circumstances of external impact force, just can contact with the inboard of interior casing contact of contact ball, vibration sensor's nut seat and one-way silicon controlled rectifier's positive pole pass through the wire and connect, and vibration sensor's interior casing and resistance one end pass through the wire and connect, and the resistance other end and one-way silicon controlled rectifier control pole pass through the wire and connect.

The time circuit of the detection unit is composed of a resistor, an adjustable resistor, a silicon switch diode, an electrolytic capacitor, a time base integrated circuit and a PNP triode, wherein the model of the time base integrated circuit is NE555, the negative pole of the silicon switch diode and the reset input end 4 pin of the time base integrated circuit are connected with the positive power supply input end 8 pin, one end of the resistor and one end of the adjustable resistor are connected through a lead, the positive pole of the silicon switch diode and the positive pole of the electrolytic capacitor, the trigger input end 2 pin of the time base integrated circuit is connected with the threshold end 6 pin, the other end of the adjustable resistor is connected through a lead, the output end 3 pin of the time base integrated circuit is connected with the base of the PNP triode through a lead, the negative power supply input end 1 pin and the other end of the resistor of the time base integrated circuit are grounded through leads, the time circuit is positioned in the shell of the detection unit, the lower part of the detection unit is sealed by silicon rubber, the wiring pin of the adjustable resistor is positioned in the silicon rubber, the adjusting handle of the adjustable resistor is positioned outside the upper part of the sealed silicon rubber, so as to facilitate the adjusting handle of the adjustable resistor to be adjusted on the upper part of the sealed silicon rubber, the time circuit is installed in the shell, after the time circuit is installed in the shell, a user can operate the adjustable handle of the adjustable resistor through a hole in the shell, thereby adjusting handle, thereby different resistance.

The first wireless transmitting facility of the detection unit is a wireless transmitting circuit of a ZYO300-A72 type wireless transmitting/receiving assembly, the working voltage is 9-12V, the wireless signal transmitting distance is 300m, a flexible wire is arranged on the wireless transmitting facility to serve as an antenna, the antenna is led out from an opening in the middle of the shell cover, the wireless transmitting circuit is provided with two wireless signal transmitting key switches, two paths of wireless closing signals which do not interfere with each other can be transmitted by the wireless transmitting circuit by pressing the two wireless signal transmitting key switches respectively, and two power contacts under the first wireless signal transmitting key switch on the wireless transmitting circuit are connected together through a wire.

The second wireless transmitting facility of the detection unit is a wireless transmitting circuit of a ZYO300-A72 type wireless transmitting/receiving assembly, the working voltage is 9 to 12V, the wireless signal transmitting distance is 300m, a flexible wire is arranged on the wireless transmitting facility to serve as an antenna, the antenna is led out from an opening in the middle of the shell cover, the wireless transmitting circuit is provided with two wireless signal transmitting key switches, two paths of wireless closing signals which do not interfere with each other can be transmitted by the wireless transmitting circuit by pressing the two wireless signal transmitting key switches respectively, and two power contacts under the second wireless signal transmitting key switch on the wireless transmitting circuit are connected together through a wire.

The detection unit comprises a detection unit, a detection unit and a control unit, wherein the detection unit comprises a reset circuit, a resistor, an NPN triode, an electrolytic capacitor and a relay, the NPN triode and the resistor are respectively provided with two parts, one end of a first resistor is connected with one end of a second resistor, and the anode of the electrolytic capacitor is connected through a lead, the other end of the second resistor is connected with the base of the first NPN triode through a lead, the emitter of the first NPN triode is connected with the base of the second NPN triode through a lead, the collector of the first NPN triode is connected with the collector of the second NPN triode, and the power input end of the cathode of the relay is connected with the power input end of the anode of the electrolytic capacitor through a lead, and the power input end of the anode of the relay is connected with the control power input end of the relay through a lead.

The voltage stabilizing unit comprises a lead-acid storage battery, a three-terminal fixed output voltage stabilizer, ceramic chip capacitors and a power switch, wherein the power switch is a toggle power switch, the ceramic chip capacitors are two, the model of the lead-acid storage battery is 12V/4AH, the model of the three-terminal fixed output voltage stabilizer is 7805, the anode of the lead-acid storage battery is connected with one end of the power switch through a wire, the other end of the power switch is connected with 1 pin of the anode power input end of the three-terminal fixed output voltage stabilizer, one end of the first ceramic chip capacitor is connected through a wire, the cathode of the lead-acid storage battery is connected with the other end of the first ceramic chip capacitor, 2 pins of the cathode power input end of the three-terminal fixed output voltage stabilizer, one end of the second ceramic chip capacitor is grounded through a wire, 3 pins of the anode power output end of the three-terminal fixed output voltage stabilizer are connected with the other end of the second ceramic chip capacitor through a wire, the power switch is installed in the plastic box, an operating handle of the power switch is positioned outside a first hole from left to right at the front upper end of the plastic box, and the power switch is conveniently opened and closed outside the plastic box.

When the charging socket is installed in the plastic box, the front end of the jack of the charging socket is positioned outside the hole at the right side end of the plastic box, so that an external power supply charger power plug can be conveniently inserted into the jack of the charging socket.

The wireless receiving unit consists of a wireless receiving facility, a resistor, a relay and an NPN triode, wherein the resistor, the relay and the NPN triode are respectively provided with two, the wireless receiving facility is a wireless receiving circuit of a ZYO300-A72 type wireless transmitting/receiving component, the wireless receiving circuit of the ZYO300-A72 type wireless transmitting/receiving component can receive a wireless closed signal transmitted by the wireless transmitting circuit of the ZYO300-A72 type wireless transmitting/receiving component, the wireless receiving circuit is provided with a matched pull rod antenna, the pull rod antenna is arranged on a left opening on the rear side of the plastic box through an opening at the lower end of the pull rod antenna by using a screw nut, after the wireless receiving circuit is arranged, the pull rod antenna is positioned outside the plastic box, and the wireless receiving circuit is provided with two high-level output ends, the positive power input end 1 pin of the wireless receiving circuit is connected with the positive power input end of a first relay, the control power input end of the first relay, the positive power input end of a second relay and the control power input end of the second relay through leads, the first high-level output end 4 pin of the wireless receiving circuit is connected with one end of a first resistor through a lead, the other end of the first resistor is connected with the base of a first NPN triode through a lead, the collector of the first NPN triode is connected with the negative power input end of the first relay through a lead, the second high-level output end 5 pin of the wireless receiving circuit is connected with one end of a second resistor through a lead, the other end of the second resistor is connected with the base of the second NPN triode through a lead, the collector of the second NPN triode is connected with the negative power input end of the second relay through a lead, and the negative power input end 3 pin of the wireless receiving circuit is connected with the emitter of the first NPN triode, the emitter of the second NPN triode, the second resistor and the second resistor are connected with the output end of the wireless receiving circuit through a lead, and the emitter of the second NPN triode is grounded through a lead.

The first alarm unit consists of a light emitting diode, a solid recording integrated circuit, a power switch, a loudspeaker, a resistor, a silicon switch diode, an electrolytic capacitor, an NPN triode, a relay and a time base integrated circuit, wherein the power switch is a point-acting power switch, the model of the solid recording integrated circuit is BA9902, the model of the time base integrated circuit is NE555, the resistor and the light emitting diode respectively have two numbers, the light emitting diode emits red light when being electrified, a pin 4 at the positive power input end of the solid recording integrated circuit is connected with the positive pole of the first light emitting diode, the positive pole of the second light emitting diode, one end of the first resistor, one end of the second resistor, the positive pole of the silicon switch diode, a pin 4 at the reset end of the time base integrated circuit, a pin 8 at the positive power input end of the solid recording integrated circuit and the positive power input end of the relay through leads, a pin 7 at the negative power output end of the solid recording integrated circuit is connected with the negative pole of the second light emitting diode through leads, the other end of the second resistor is connected with the anode of the silicon switch diode, the trigger end 2 pin and the threshold end 6 pin of the time base integrated circuit, and the anode of the electrolytic capacitor through leads, the anode power output end 3 pin of the time base integrated circuit is connected with the base electrode of the NPN triode through leads, the collector electrode of the NPN triode is connected with the power input end of the relay through leads, when first alarm unit installs in the plastic case, switch's button exposes outside the second trompil of left-to-right in the anterior upper end of plastic case, second emitting diode's front end exposes outside the third trompil of left-to-right in the anterior upper end of plastic case, in order to make things convenient for outside opening and closing switch at the plastic case, watch the luminous condition of second emitting diode outside the plastic case, the speaker is located the preceding lower extreme left part metal screen panel rear side of plastic case, first emitting diode's front end exposes outside the second trompil of lower extreme left part before the plastic case, in order to make things convenient for the sound that the speaker sent to wear out outwards, watch the luminous condition of first emitting diode outside the plastic case.

The second alarm unit consists of a light emitting diode, a solid recording integrated circuit, a power switch, a loudspeaker, a resistor, a silicon switch diode, an electrolytic capacitor, an NPN triode, a relay and a time base integrated circuit, wherein the power switch is a point-operated power switch, the model of the solid recording integrated circuit is BA9902, the model of the time base integrated circuit is NE555, the resistor and the light emitting diode respectively emit green light when the light emitting diode is electrified, the pin 4 at the positive power input end of the solid recording integrated circuit is connected with the positive pole of the first light emitting diode, the positive pole of the second light emitting diode, one end of the first resistor, one end of the second resistor, the positive pole of the silicon switch diode, the pin 4 at the reset end of the time base integrated circuit, the pin 8 at the positive power input end of the solid recording integrated circuit and the positive power input end of the relay through leads, the pin 7 at the negative power output end of the solid recording integrated circuit is connected with the negative pole of the second light emitting diode through leads, the other end of the second resistor is connected with the anode of the silicon switch diode, the trigger end 2 pin and the threshold end 6 pin of the time base integrated circuit, and the anode of the electrolytic capacitor through leads, the anode power output end 3 pin of the time base integrated circuit is connected with the base electrode of the NPN triode through leads, the collector electrode of the NPN triode is connected with the power input end of the relay through leads, when the second alarm unit is installed in the plastic box, the button of the power switch is exposed outside a fourth opening from left to right at the upper end of the front part of the plastic box, the front end of the second light-emitting diode is exposed outside a fifth opening from left to right at the upper end of the front part of the plastic box, so that the power switch can be conveniently opened and closed outside the plastic box, the light-emitting condition of the second light-emitting diode is observed outside the plastic box, the loudspeaker is located on the rear side of the metal mesh enclosure at the right part of the front lower end of the plastic box, the front end of the first light-emitting diode is exposed outside the second opening at the right part of the front part of the plastic box, so that the sound emitted by the loudspeaker can penetrate outwards, and the light-emitting condition of the first light-emitting diode is observed outside the plastic box.

The timer is X0051 in type, the working voltage of the timer is 1.5V, the upper part of the front end of the timer is provided with a liquid crystal display screen which can display minutes, seconds and milliseconds, the lower part of the front end of the timer is provided with three keys, the first key is a countdown minute setting key, the second key is a countdown second setting key, the third key is a start/stop key, when the third key is pressed for the first time, the timer starts to count time, when the third key is pressed for the second time, the timer stops counting time, when the timer is arranged in the plastic box, the liquid crystal display screen and the three keys at the front part are positioned outside an opening in the lower middle part of the front part of the plastic box so as to be convenient for watching counting numbers on the liquid crystal display screen outside the plastic box, the three keys are operated outside the plastic box, the 1 pin of the positive power supply input end of the timer is connected in series with two silicon rectifier diodes, and the 2 pin of the negative power supply input end of the timer is connected in series with two silicon rectifier diodes.

The invention has the beneficial effects that: when the lithium storage battery of the detection unit is out of power, the lithium storage battery can be taken out and charged by an external 12V power supply charger; when the lead-acid storage battery of the voltage stabilizing unit is out of power, the lead-acid storage battery can be charged by inserting a power plug of an external 12V power charger into a power socket; the grenade shell and the detection unit are divided into two parts, the weight of the grenade shell is close to that of a common grenade, the grenade shell and the detection unit are connected through threads, when one part is damaged, the other part can be normally used, the training cost is saved, and when the grenade is thrown for training, the throwing time of the grenade shell of a thrower can be judged; the plastic box is placed around the thrower. When the throwing time of a thrower is too early, the second wireless transmitting facility of the detection unit transmits a second path of wireless closing signal under the action of the trigger probe of the detection unit after the shell falls to the ground, the second alarm unit can transmit a sound and light to prompt the shell to fall to the ground after the wireless receiving unit receives the wireless closing signal, and two power contacts under a start/stop key of the timer are closed for 0.5 second, so that the timer starts to time; when the time set by the time circuit of the detection unit is up, namely the actual combat of the grenade is simulated, after the delay time of the grenade is up, the time circuit enables the first wireless transmitting facility of the detection unit to transmit a first path of wireless closing signal, after the wireless receiving unit receives the wireless closing signal, the first alarm unit can send out an acousto-optic prompt that the time set by the time circuit is up, and two power contacts under a start/stop key of the timer are closed for 0.5 seconds, so that the timer stops timing; at the moment, the trainer can know that the missile shell falls to the ground according to the first sound and light prompt sent by the second alarm unit, namely the throwing time is too early, then the trainer can clearly know the early throwing time by watching the digital display on the timer, and throws the missile shell after a certain time according to the time before the first throwing when the missile shell is thrown for the second time so as to achieve the best training effect and the best fighting effect during wartime. When the time for throwing the projectile shell by a thrower is too late, the time circuit of the projectile shell not falling to the ground detection unit sets the time to be up, namely the time for simulating the actual combat of the grenade is up, after the delay time of the grenade is up, the time circuit enables the first wireless emission facility of the detection unit to emit a first path of wireless closing signal, after the wireless receiving unit receives the wireless closing signal, the first alarm unit emits sound and light to prompt the time set by the time circuit to be up, and enables two power contacts under a start/stop key of the timer to be closed for 0.5 second, so that the timer starts to time; when the bullet shell falls to the ground, the second wireless transmitting facility of the detection unit transmits a second path of wireless closing signal under the action of the trigger probe of the detection unit after the bullet shell falls to the ground, and the wireless receiving unit receives the wireless closing signal, the second alarm unit can send out sound and light to prompt the bullet shell to fall to the ground and close two power contacts under a start/stop key of the timer for 0.5 second, so that the timer stops timing; at the moment, the trainer can know that the timing time is up before the bullet shell falls to the ground according to the first audible and visual prompt sent by the first alarm unit, namely the throwing time is too late, then the trainer can clearly know the late throwing time by watching the digital display on the timer, and the bullet shell is thrown in advance for a certain time according to the time delayed by the first throwing when the bullet shell is thrown for the second time, so that the best training effect and the best fighting effect during wartime are achieved. The invention can lead the throwing grenade training to achieve the best effect and has good application prospect.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural view of a cartridge case and a detection unit of the present invention.

Fig. 2 is a schematic structural diagram of the voltage stabilizing unit, the charging socket, the wireless receiving unit, the first alarm unit, the second alarm unit and the timer of the invention.

Fig. 3 is a schematic structural diagram of a vibration sensor of a probe triggered by a detection unit according to the invention.

Fig. 4 is a circuit diagram of the detection unit of the present invention.

Fig. 5 is a circuit diagram of the voltage stabilizing unit, the charging socket, the wireless receiving unit, the first alarm unit, the second alarm unit and the timer according to the present invention.

Detailed Description

As shown in figures 1, 2 and 3, the training device for throwing the grenade comprises a grenade body and a detection unit, a voltage stabilizing unit 201, a charging socket 202, a wireless receiving unit 203, a first alarm unit 204, a second alarm unit 205 and a timer 206, wherein the grenade body consists of a shell 101-1 and a counterweight 101-2, the shell 101-1 is consistent with the grenade in shape, the shell 101-1 is made of impact-resistant and high-strength engineering plastics, the counterweight 101-2 is made of steel, the shell 101-1 and the counterweight 101-2 are manufactured by installing the counterweight 101-2 at the lower end of the upper part in the shell 101-1, the upper part in the shell 101-1 is of a hollow cylindrical structure, the hollow cylindrical part of the shell 101-1 is provided with a right-handed internal thread 101-3 from top to bottom, the detection unit consists of the shell 102-1 and a shell cover 102-2, the battery 102-3, the hollow power switch 102-5, the trigger probe 102-6, a time circuit 102-7, a first wireless launching facility 102-8, a second wireless launching facility 102-9, a wireless launching facility, a wireless launching device 102-2, a high-15 external thread is arranged at the upper end of the shell 102-1, the shell 102-1 and a high-2 is provided with an external thread 102-12, the shell 102-2, the shell 102-2 is manufactured by adopting an external thread structure, the shell 102-1 and a high-102-2 structure, a battery box 102-4, a power switch 102-5, a trigger probe 102-6, a time circuit 102-7, a first wireless transmitting facility 102-8, a second wireless transmitting facility 102-9 and a reset circuit 102-10 are positioned in a shell 102-1, the power switch 102-5 is a toggle power switch, the anode of a battery 102-3 is connected with one end of the power switch 102-5 through a lead, the other end of the power switch 102-5 is connected with a first anode power input end of the reset circuit 102-10 and a control power input end of the reset circuit 102-10 through leads, the anode power output end of the reset circuit 102-10 is connected with the anode power input end of the time circuit 102-7 and the anode power input end of the trigger probe 102-6 through leads, the positive power output end of the time circuit 102-7 is connected with the positive power input end of the first wireless transmitting facility 102-8 and the second positive power input end of the reset circuit 102-10 through leads, the positive power output end of the trigger probe 102-6 is connected with the positive power input end of the second wireless transmitting facility 102-9 through leads, the negative electrode of the battery 102-3 is connected with the negative power input end of the time circuit 102-7, the negative power input end of the first wireless transmitting facility 102-8, the negative power input end of the second wireless transmitting facility 102-9 and the negative power input end of the reset circuit 102-10 are grounded through leads, the interior of the shell 102-1 is encapsulated through silicon rubber, and after encapsulation, the lower part of the battery box 102-4, the lower part of the power switch 102-5, the trigger probe 102-6, the time circuit 102-7 and the first wireless transmitting facility 102-8, the second wireless transmitting facility 102-9 and the reset circuit 102-10 are positioned in silicon rubber, the upper cover of the battery box 102-4 and the operating handle of the power switch 102-5 are positioned at the upper part of the silicon rubber, the battery 102-3 is positioned in the battery box 102-4, the battery 102-3 can be placed in the battery box 102-4 at the upper part of the sealed silicon rubber, the operating handle of the power switch 102-5 can be operated at the upper part of the sealed silicon rubber, the right-handed external thread 101-11 at the outer side end of the shell 102-1 of the detecting unit is screwed into the right-handed internal thread at the hollow cylindrical part of the shell 101-1 of the elastic shell, the shell 102-1 of the detecting unit is arranged in the hollow cylindrical part of the shell 101-1 of the elastic shell, after the shell 102-1 is completely screwed into the shell 101-1, the height of the upper end of the shell 102-1 is consistent with that of the upper end of the shell 101-1, the left-hand external thread 102-13 of the shell cover 102-2 of the detection unit is screwed into the left-hand internal thread of the shell 101-1 of the detection unit, the shell cover 102-2 is arranged at the upper part of the shell 102-1, the voltage stabilizing unit 201, the wireless receiving unit 203, the first alarm unit 204 and the second alarm unit 205 are connected on a circuit board by tin soldering, and are arranged in a plastic box 207 together with the charging socket 203 and the timer 206, the upper end of the front part of the plastic box 207 is provided with five openings 207-1 from left to right, the left part and the right part of the front lower end of the plastic box 207 are respectively provided with two openings 207-2, wherein the front ends of the two openings are provided with a metal mesh cover 207-3, the right side end of the plastic box 207 is provided with an opening 207-4, the left part of the upper part of the rear side of the plastic box 207 is provided with an opening, the lower middle part of the front end of the plastic box 207 is provided with an opening 207-5, the positive power input end of the voltage stabilizing unit 201 is connected with one end of the charging socket 202 through a lead, the positive power output end of the voltage stabilizing unit 201 is connected with the positive power input end of the timer 206 through a lead, the positive power input end of the wireless receiving unit 203 is connected with the first positive power output end of the first alarm unit 204 through a lead, the second positive power output end of the wireless receiving unit 203 is connected with the positive power input end of the second alarm unit 205 through a lead, the negative power output end of the voltage stabilizing unit 201 is connected with the other end of the charging socket 202, the negative power input end of the wireless receiving unit 203, the negative power input end of the first alarm unit 204, the negative power input end of the second alarm unit 205 and the negative power input end of the timer 206 are grounded through leads, and the two control signal output ends of the first alarm unit 204, the two control signal output ends of the second alarm unit 205 and the two power contacts under the start/stop key on the timer 206 are respectively connected through leads. After the power switch 102-5 of the detection unit is installed in the housing 102-1, a user can operate the operating handle of the power switch 102-5 through the opening in the middle of the housing cover 102-2 at the outside of the housing 102-1, thereby turning on and off the power switch 102-5. The upper end of the battery box 102-4 of the detection unit is provided with a cover, so that the battery 102-3 is conveniently placed in the battery box 102-4, the battery 102-3 is placed in the battery box 102-4, after the left-hand external thread 102-13 of the shell cover 102-2 of the detection unit is screwed into the left-hand internal thread 102-12 of the shell 102-1 of the detection unit, the upper end of the battery 102-3 is just contacted with the lower part of the shell cover 102-2, and the battery 102-3 is prevented from shaking in the battery box 102-4. The trigger probe 102-6 of the detection unit comprises a vibration sensor, a resistor and a one-way thyristor, the vibration sensor comprises an outer shell 301, an inner shell 302, a spring 303, a contact ball 304, a base plate 305, a circular cover 306, a nut seat 307 and an adjusting rod 308, the outer shell 301 is made of plastic materials, the upper end of the right side of the outer shell 301 is provided with an opening, the upper end of the inside of the outer shell 301 is provided with internal threads, the inner shell 302, the spring 303, the contact ball 304, the base plate 305, the circular cover 306, the nut seat 307 and the adjusting rod 308 are made of copper materials, the lower part of the inner shell 302 is in a pointed cone shape, the upper part of the inner shell 302 is sleeved below the internal threads at the upper end of the inside of the outer shell 301, the upper end of the inside of the outer shell 301 and the upper part of the outer shell 302 are in an interference fit state, silicon rubber is encapsulated between the lower end of the inside of the outer shell 301 and the lower end of the outside of the inner shell 302, the base plate 305 is circular, the contact ball 304 is welded on the lower part of the spring 303, the upper part of the spring 303 is welded on the lower part of the base plate 305, the adjusting rod 308 is provided with an external thread from top to bottom, the lower part of the adjusting rod 308 is welded on the upper part of the base plate 305, the outer side of the annular circular cover 306 is provided with an external thread, the middle part of the circular cover 306 is provided with an opening, the nut seat 307 is welded on the opening in the middle part of the circular cover 306, the upper part of the adjusting rod 308 is screwed into the internal thread of the nut seat 307 and is screwed into the internal thread at the upper end inside the outer shell 301 through the external thread from top to bottom on the outer side of the circular cover 306, the circular cover 306 is arranged at the upper end inside the outer shell 301, after the circular cover 306 is arranged, the upper part of the adjusting rod 308 is positioned on the outer side of the upper part of the outer shell 301, the uppermost end of the adjusting rod 308 is welded with a circular adjusting handle 309, one conducting wire is connected with the inner shell 302 and is led out from the opening at the upper end on the right side of the outer shell 301, and the other conducting wire is connected with the nut seat 307, when the adjusting rod 308 rotates clockwise along the nut seat 307, the contact ball 304 moves downwards, under the condition of small external impact force, the contact ball 304 contacts with the inner side of the inner shell 302, when the adjusting rod 308 rotates anticlockwise along the nut seat 307, the contact ball 304 moves upwards, under the condition of large external impact force, the contact ball 304 contacts with the inner side of the inner shell 302, the nut seat 307 of the vibration sensor is connected with the anode of the one-way thyristor through a lead, the inner shell 302 of the vibration sensor is connected with one end of a resistor through a lead, and the other end of the resistor is connected with the control electrode of the one-way thyristor through a lead.

As shown in FIG. 1, FIG. 2 and FIG. 3, when the battery 102-3 of the detecting unit of the present invention is dead, the battery 102-3 can be taken out to charge the battery 102-3 by an external 12V power charger; when the lead-acid storage battery of the voltage stabilizing unit 201 is out of power, the lead-acid storage battery can be charged by inserting a power plug of an external 12V power supply charger into the power socket 202; the bullet shell and the detecting unit are divided into two parts, the weight of the bullet shell is close to that of a common grenade, the bullet shell and the common grenade are connected through threads, when one part is damaged, the other part can be normally used, and the using cost is saved. Before the training of throwing the grenade, a user combines an external timer (for example, a mobile phone timing function) to adjust a handle by adjusting an adjustable resistor of a time circuit 102-7 of a detection unit in advance, so that the time circuit 102-7 can output a positive power supply to enter the input end of a positive power supply of a first wireless emission facility 102-8 of the detection unit after a specified time according to the requirement of the user, and the grenade is exploded after the delay time is up after the real grenade is thrown; when the adjustable resistance adjustment handle is adjusted to the left, the time circuit 102-7 will output a positive power supply to enter the positive power supply input terminal of the first wireless transmission facility 102-8 of the detection unit after a relatively long time, and when the adjustable resistance adjustment handle is adjusted to the right, the time circuit 102-7 will output a positive power supply to enter the positive power supply input terminal of the first wireless transmission facility 102-8 of the detection unit after a relatively short time. In the detection unit: during training, after a trainer opens a power switch 102-5 and throws out of a grenade shell, a power supply output by a battery 102-3 enters a positive power supply input end of a time circuit 102-7 through a reset circuit 102-10, the time circuit 102-7 starts timing under the action of an internal circuit of the time circuit 102-7, and after the timing time of the time circuit 102-7 is up (a specific time trainer adjusts the adjustable resistance of the time circuit according to the delay time of a real grenade so as to reach the time closest to the delay time of the real grenade), namely, the time circuit 102-7 simulates the explosion of the real grenade throwing the grenade after the delay time of the grenade is up, and outputs a positive power supply to enter a positive power supply input end of a first wireless emission facility 102-8, so that the first wireless emission facility 102-8 works with electricity to emit a first path of wireless closing signals; when the thrown shell body contacts the ground, namely, the thrown shell body is equivalent to a real grenade, the grenade body contacts the ground, the spring 303 of the vibration sensor of the trigger probe 102-6 shakes due to the impact effect of the shell body contacting the ground, then the vibration sensor contact ball 304 at the lower end of the vibration sensor spring 303 shakes and contacts the inner side of the inner shell 302 of the vibration sensor, then the output power of the battery 102-3 triggers the conduction of the one-way thyristor of the trigger probe 102-6 through the nut seat 307 of the vibration sensor, the adjusting rod 308, the spring 303, the contact ball 304, the inner shell 302 and the resistance of the trigger probe 102-6, and then the positive power input end of the second wireless transmitting facility 102-9 is in a power-on state, so that the second wireless transmitting facility 102-9 works to transmit a second path of wireless closing signals.

As shown in fig. 1, fig. 2, and fig. 3, after the power switch of the voltage stabilizing unit 201 is turned on, the voltage stabilizing unit 201 outputs a stable 5V dc power into the positive power input terminal of the wireless receiving unit 203, so that the wireless receiving unit 203 is in a standby state. When the first wireless transmitting facility 102-8 of the detecting unit transmits a first path of wireless closing signal, and the wireless receiving unit 203 receives a path of wireless closing signal, the first high level output end of the wireless receiving unit 203 outputs a high level, then, the first light emitting diode of the first alarm unit 204 emits red light, the loudspeaker of the first alarm unit 204 emits loud "grenade explosion" sound, and the trainer is prompted that the time delay time of the time circuit 102-7 of the detecting unit is up, namely, the time delay time of the time delay after the real grenade is thrown out is simulated to reach the bomb body explosion. When the second wireless transmitting facility 102-9 of the detecting unit transmits the second wireless closed signal, and the wireless receiving unit 203 receives the two wireless closed signals, the second high level output end of the wireless receiving unit 203 outputs high level, then the first light emitting diode of the second alarm unit 205 emits green light, and the speaker of the second alarm unit 205 emits loud "hand grenade landing" sound, so as to prompt the trainer that the grenade casing is already landed at the moment, namely, the fact that the real hand grenade is thrown out and the grenade contacts the ground is simulated. At the same time when the first led of the first alarm unit 204 emits red light or the first led of the second alarm unit 205 emits green light, the first alarm unit 204 or the second alarm unit 205 closes two power contacts under the start/stop key of the timer 206 for 0.5 seconds, so that the timer 206 starts or stops timing. In actual use, when the time for throwing the missile shell is too early, the time delay time of the time circuit 102-7 of the missile shell landing detection unit is not reached, the second wireless transmission facility 102-9 of the detection unit transmits a second wireless closed signal through the action of the trigger probe of the detection unit, after the wireless receiving unit 203 receives the second wireless closed signal, the second alarm unit 205 sends out sound and light to prompt the missile shell to land, and simultaneously, the second alarm unit 205 enables two power contacts under the start/stop key of the timer 206 to be closed for 0.5 second, so that the timer 206 starts to time; when the time set by the time circuit 102-7 of the detection unit is up, that is, when the actual combat of the grenade is simulated, and the delay time of the grenade is up, the time circuit 102-7 enables the first wireless transmission facility 102-8 of the detection unit to transmit a first wireless closing signal, and after the wireless receiving unit 203 receives the first wireless closing signal, the first alarm unit transmits an audible and visual prompt to close two power contacts under the start/stop key of the timer 206 for 0.5 second when the time set by the time circuit 102-7 is up, so that the timer 206 stops timing; since the second alarm unit 205 sends out the sound and light prompt before the first alarm unit 204, at this time, the trainer can know that the missile shell is grounded, that is, the throwing time is too early according to the sound and light prompt sent out by the second alarm unit 206, and then the trainer can clearly know how much the throwing time is earlier by watching the digital display on the timer 206, and throws the missile after a certain time according to the time delay before the first throwing when the missile shell is thrown for the second time, so as to achieve the best training effect and the best fighting effect during wartime. When the time for throwing the missile shell by a thrower is too late, the time circuit 102-7 of the missile shell not falling to the ground detection unit sets the time to be up, namely when the actual combat of the grenade is simulated, the grenade explodes after the delay time of the grenade is up, the time circuit 102-7 enables the first wireless transmitting facility of the detection unit to transmit a first wireless closing signal, the wireless receiving unit receives the first wireless closing signal, the first alarm unit 204 can transmit an acousto-optic prompt that the time set by the time circuit is up, and two power contacts under a start/stop key of the timer 206 are closed for 0.5 seconds, and then the timer 206 starts to time; when the shell body falls to the ground, the second wireless transmitting facility 102-9 of the detection unit transmits a second wireless closed signal through the action of the trigger probe 102-6 of the detection unit, and after the wireless receiving unit receives the second wireless closed signal, the second alarm unit 205 transmits sound and light to prompt the shell body to fall to the ground, and simultaneously, two power contacts under a start/stop key of the timer 206 are closed for 0.5 second, so that the timer 206 stops timing; since the first alarm unit 204 sends the sound and light prompt before the second alarm unit 205, at this time, the trainer can know that the timing time of the bullet shell not falling to the ground is up according to the sound and light prompt sent by the first alarm unit 204, that is, the throwing time is too late, and then the trainer can clearly know how late the throwing time is, and throws the bullet shell at a certain time ahead according to the time delayed by the first throwing when throwing the bullet shell for the second time, so as to achieve the best training effect and the best fighting effect in wartime.

As shown in FIG. 4, the cell G1 of the detection unit is a lithium secondary cell, the voltage is 12V, and the model is QC-12V-1.1Ah-PVC52-38-22. The upper end of the battery box of the detection unit is provided with the cover, so that the battery G1 can be conveniently placed into the battery box, the battery G1 is placed into the battery box, the left-handed external thread of the shell cover of the detection unit is screwed into the left-handed internal thread of the shell of the detection unit, and the upper end of the battery G1 is just contacted with the lower part of the shell cover to prevent the battery G1 from shaking in the battery box. The trigger probe of the detection unit consists of a vibration sensor M, a resistor R2 and a unidirectional silicon controlled rectifier VS, wherein the vibration sensor M consists of an outer shell, an inner shell, a spring, a contact ball, a base plate, a circular cover, a nut seat and an adjusting rod, the outer shell is made of plastic materials, the upper right side end of the outer shell is provided with an opening, the upper inner end of the outer shell is provided with an internal thread, the inner shell, the spring, the contact ball, the base plate, the circular cover, the nut seat and the adjusting rod are made of copper materials, the lower part of the inner shell is in a pointed cone shape, the upper outer part of the inner shell is sleeved below the internal thread at the upper inner end of the outer shell, the upper inner end of the outer shell and the upper outer part of the inner shell are in an interference fit state, silicon rubber is filled between the lower inner end of the outer shell and the lower outer end of the inner shell, the base plate is circular, the contact ball is welded at the lower part of the spring, the upper part of the spring is welded at the lower part of the base plate, the adjusting rod is provided with external threads from top to bottom, the lower part of the adjusting rod is welded on the upper part of the base plate, the outer side of the annular cover is provided with external threads, the middle part of the annular cover is provided with an opening, the nut seat is welded on the opening in the middle part of the annular cover, the upper threads of the adjusting rod are screwed into the internal threads of the nut seat, the external threads from top to bottom are screwed into the internal threads at the upper end inside the outer shell through the external threads outside the annular cover, the annular cover is installed at the upper end inside the outer shell, after the annular cover is installed, the upper part of the adjusting rod is positioned outside the upper part of the outer shell, the uppermost end of the adjusting rod is welded with a circular adjusting handle, one conducting wire is connected with the inner shell and led out from the opening at the upper end on the right side of the outer shell, the other conducting wire is connected with the nut seat, when the adjusting rod rotates clockwise along the nut seat, the contact ball moves downwards, and under the condition of small external impact force, the contact ball contacts with the inner side of the inner shell, when the adjusting rod rotates anticlockwise along the nut seat, the contact ball moves upwards, under the condition of large external impact force, the contact ball can be contacted with the inner side of the inner shell, the nut seat of the vibration sensor M is connected with the anode of the unidirectional silicon controlled rectifier VS through a lead, the inner shell of the vibration sensor M is connected with one end of the resistor R2 through a lead, and the other end of the resistor R2 is connected with the control electrode of the unidirectional silicon controlled rectifier VS through a lead. The time circuit of the detection unit consists of a resistor R1, an adjustable resistor RP1, a silicon switch diode VD1, an electrolytic capacitor C1, a time base integrated circuit A1 and a PNP triode VT1, wherein the model of the time base integrated circuit A1 is NE555, the negative pole of the silicon switch diode VD1 and the pin 4 of the reset input end of the time base integrated circuit A1 are connected with the pin 8 of the positive power supply input end, one end of the resistor R1 and one end of the adjustable resistor RP1 through leads, the positive pole of the silicon switch diode VD1 and the positive pole of the electrolytic capacitor C1, the pin 2 of the trigger input end of the time base integrated circuit A1 is connected with the pin 6 of the threshold end and the other end of the adjustable resistor RP1 through leads, the pin 3 of the output end of the time base integrated circuit A1 is connected with the base electrode of the PNP triode VT1 through leads, the time base integrated circuit A1 is characterized in that a pin 1 of a negative power input end of a time base integrated circuit A1, the other end of a resistor R1 and a negative electrode of an electrolytic capacitor C1 are grounded through a lead, a time circuit is positioned in a shell of a detection unit, the lower portion of the shell is sealed by silicon rubber, a wiring pin of an adjustable resistor RP1 is positioned in the silicon rubber, an adjusting handle of the adjustable resistor RP1 is positioned on the outer side of the upper portion of the sealed silicon rubber, so that the adjusting handle of the adjustable resistor RP1 can be conveniently adjusted on the upper portion of the sealed silicon rubber, after the time circuit is installed in the shell, a user can operate the adjusting handle of the adjustable resistor RP1 through a hole in the middle of a shell cover outside the shell, and different resistance values of the adjustable resistor RP1 can be adjusted. The first wireless transmitting facility of the detection unit is a wireless transmitting circuit of a ZYO300-A72 type wireless transmitting/receiving assembly, the working voltage is 9 to 12V, the wireless signal transmitting distance is 300m, a flexible wire is arranged on the wireless transmitting facility to serve as an antenna, the antenna is led out from an opening in the middle of the shell cover, the wireless transmitting circuit A2 is provided with two wireless signal transmitting key switches, two paths of wireless closing signals which do not interfere with each other can be transmitted by the wireless transmitting circuit through pressing the two wireless signal transmitting key switches respectively, and two power contacts below a first wireless signal transmitting key switch J1 on the wireless transmitting circuit A2 are connected together through a wire. The second wireless transmitting facility of the detection unit is a wireless transmitting circuit of a ZYO300-A72 type wireless transmitting/receiving component, the working voltage is 9 to 12V, the wireless signal transmitting distance is 300m, the wireless transmitting facility is provided with a flexible wire as an antenna, the antenna is led out from an opening in the middle of the shell cover, the wireless transmitting circuit A3 is provided with two wireless signal transmitting key switches, two paths of wireless closed signals which do not interfere with each other can be transmitted by the wireless transmitting circuit A3 by pressing the two wireless signal transmitting key switches respectively, and two power contacts under a second wireless signal transmitting key switch J2 on the wireless transmitting circuit A3 are connected together through a wire. The detection unit comprises resistors R3 and R4, NPN triodes VT2 and VT3, an electrolytic capacitor C2 and a relay K1, wherein the NPN triodes and the resistors are respectively two, one end of a first resistor R3 is connected with one end of a second resistor R4, and the positive electrode of the electrolytic capacitor C2 is connected through a lead, the other end of the second resistor R4 is connected with the base electrode of the first NPN triode VT2 through a lead, the emitting electrode of the first NPN triode VT2 is connected with the base electrode of the second NPN triode VT3 through a lead, the collecting electrode of the first NPN triode VT2 is connected with the collecting electrode of the second NPN triode VT3 and the negative electrode power supply input end of the relay K1 through leads, the negative electrode of the electrolytic capacitor C2 is grounded with the emitting electrode of the second NPN triode VT3 through a lead, and the positive electrode power supply input end of the relay K1 is connected with the control power supply input end of the relay K1 through a lead. The power switch S1 is a toggle power switch, and the positive electrode of the battery G is connected with one end of the power switch S1 through a lead; the other end of the power switch S1 is connected with a first positive power input end of the reset circuit, a positive power input end of a relay K1 and a control power input end of the reset circuit relay K1 through leads; a normally closed contact end of a relay K1 at the output end of the positive power supply of the reset circuit is connected with a pin 4 of the time base integrated circuit A1 at the input end of the positive power supply of the time circuit and a one-way silicon controlled rectifier VS anode at the input end of the positive power supply of the trigger probe through leads; the collector of a PNP triode VT1 at the positive power output end of the time circuit is connected with a pin 1 of a wireless transmitting circuit A2 at the positive power input end of the first wireless transmitting facility and the other end of a resistor R3 at the second positive power input end of the reset circuit through a lead; the one-way silicon controlled rectifier VS cathode of the positive power supply output end of the trigger probe is connected with the pin 1 of the wireless transmitting circuit A3 of the positive power supply input end of the second wireless transmitting facility through a lead; the negative pole of the battery G and the negative pole power input end of the time base integrated circuit A1, the negative pole power input end of the first wireless transmitting facility and the wireless transmitting circuit A2, the negative pole power input end of the second wireless transmitting facility and the wireless transmitting circuit A3, and the negative pole of the electrolytic capacitor C2 at the negative pole power input end of the reset circuit are grounded through a lead.

As shown in fig. 5, a voltage stabilizing unit is composed of a lead-acid storage battery G2, three-terminal fixed output voltage stabilizer A4, ceramic capacitors C3, C4 and a power switch S2, the power switch S2 is a toggle power switch, two ceramic capacitors are provided, the type of the lead-acid storage battery G2 is 12V/4AH, the type of the three-terminal fixed output voltage stabilizer A4 is 7805, the positive electrode of the lead-acid storage battery G2 is connected with one end of the power switch S2 through a wire, the other end of the power switch S2 is connected with the positive electrode power input terminal 1 pin of the three-terminal fixed output voltage stabilizer A4, one end of the first ceramic capacitor C3 is connected through a wire, the negative electrode of the lead-acid storage battery G2 is connected with the other end of the first ceramic capacitor C3, the negative electrode power input terminal 2 pin of the three-terminal fixed output voltage stabilizer A4, one end of the second ceramic capacitor C4 is grounded through a wire, the positive electrode power output terminal 3 pin of the three-terminal fixed output voltage stabilizer A4 is connected with the other end of the second ceramic capacitor C4 through a wire, when the power switch S2 is installed in a plastic box, an operating handle of the power switch S2 is located at the front upper end of the left-right plastic box, so as to open and close the external of the power switch S2, and close the power switch. When the charging socket CZ is installed in the plastic box, the front end of the jack of the charging socket CZ is positioned outside the open hole at the right side end of the plastic box, so that an external power supply charger power plug can be conveniently inserted into the jack of the charging socket CZ. The wireless receiving unit consists of a wireless receiving facility, resistors R5 and R6, relays K2 and K3 and NPN triodes VT4 and VT5, wherein the number of the resistors, the relays and the NPN triodes are respectively two, the wireless receiving facility is a wireless receiving circuit of a ZYO300-A72 type wireless transmitting/receiving assembly, the wireless receiving circuit of the ZYO300-A72 type wireless transmitting/receiving assembly can receive a wireless closed signal transmitted by the wireless transmitting circuit of the ZYO300-A72 type wireless transmitting/receiving assembly, the wireless receiving circuit A5 is provided with a matched pull rod antenna, the pull rod antenna is arranged on the left opening on the rear side of the plastic box through an opening at the lower end of the pull rod antenna by using a screw nut, after the installation, the pull rod antenna is positioned outside the plastic box, the wireless receiving circuit A5 is provided with two high-level output ends, the wireless receiving circuit A5 comprises a pin 1 of a positive power input end of a wireless receiving circuit A5, a pin 3 of a negative power input end of a first relay K2, a control power input end of a first relay K2, a positive power input end of a second relay K3 and a control power input end of a second relay K3 which are connected through leads, a pin 4 of a first high-level output end of the wireless receiving circuit A5 is connected with one end of a first resistor R5 through a lead, the other end of the first resistor R5 is connected with a base electrode of a first NPN triode VT4 through a lead, a collector electrode of the first NPN triode VT4 is connected with a negative power input end of the first relay K2 through a lead, a pin 5 of a second high-level output end of the wireless receiving circuit A5 is connected with one end of a second resistor R6 through a lead, the other end of the second resistor R6 is connected with a base electrode of a second NPN triode VT5 through a lead, a collector electrode of the second NPN triode VT5 is connected with a negative power input end of the second relay K3 through a lead, a pin 3 of a negative power input end of the wireless receiving circuit A5 and an emitter electrode of the first triode VT4, the emitter of the second NPN transistor VT5 is grounded through a lead. The LED audio recording device comprises light emitting diodes VL1 and VL2, a solid recording integrated circuit A6, a power switch SB, a loudspeaker B1, resistors R7 and R8, a silicon switch diode VD2, an electrolytic capacitor C5, an NPN triode VT6, a relay K4 and a time base integrated circuit A7 form a first alarm unit, the power switch SB is a point-action type power switch, the model of the solid recording integrated circuit A6 is BA9902, the model of the time base integrated circuit A7 is NE555, the resistors and the light emitting diodes are respectively two, when the light emitting diodes VL1 and VL2 are electrified, red light is emitted, a positive power supply input end 4 pin of the solid recording integrated circuit A6 is connected with a positive electrode of the first light emitting diode VL1, a positive electrode of the second light emitting diode VL2, one end of the first resistor R7, one end of the second resistor R8, a positive electrode of the silicon switch diode VD2, a reset end 4 pin and a positive power supply input end 8 pin of the time base integrated circuit A7, a power supply input end of the relay K4 are connected with a power supply input end of the solid recording integrated circuit A6 through leads, a negative electrode of the solid recording integrated circuit A6, the audio recording integrated circuit A5 and a negative electrode of the time base integrated circuit A2, the audio recording integrated circuit A5, the audio recording integrated circuit is connected with a negative electrode of the audio recording integrated circuit through leads of the cathode integrated circuit A5, the solid recording integrated circuit A5 and the cathode integrated circuit A5, the audio recording integrated circuit through leads of the anode integrated circuit, the cathode integrated circuit A5, the terminal 3 of the positive power output end of the time base integrated circuit A7 is connected with the base electrode of the NPN triode VT6 through a lead, the collector electrode of the NPN triode VT6 is connected with the negative power input end of the relay K4 through a lead, when the first alarm unit is installed in the plastic box, the button of the power switch SB is exposed outside a second opening at the upper end of the front part of the plastic box from left to right, the front end of the second light-emitting diode VL2 is exposed outside a third opening at the upper end of the front part of the plastic box from left to right, so that the power switch SB can be conveniently opened and closed outside the plastic box, the light-emitting condition of the second light-emitting diode VL2 is observed outside the plastic box, the loudspeaker B1 is positioned at the rear side of a metal mesh enclosure at the left part of the front lower end of the plastic box, the front end of the first light-emitting diode VL1 is exposed outside a second opening at the left part of the front lower end of the plastic box, so that the sound emitted by the loudspeaker B1 can conveniently penetrate outwards, and the light-emitting condition of the first light-emitting diode VL1 can be observed outside the plastic box. A second alarm unit consists of light emitting diodes VL3 and VL4, a solid recording integrated circuit A9, a power switch SC, a loudspeaker B2, resistors R9 and R10, a silicon switch diode VD3, an electrolytic capacitor C6, an NPN triode VT7, a relay K5 and a time base integrated circuit A8, wherein the power switch SC is a point-action power switch, the type of the solid recording integrated circuit A9 is BA9902, the type of the time base integrated circuit A8 is NE555, the resistors and the light emitting diodes are respectively two, green light is emitted when the light emitting diodes VL3 and VL4 are electrified, a pin 4 of a positive power supply input end of the solid recording integrated circuit A9 is connected with a positive electrode of the first light emitting diode VL3, a positive electrode of the second light emitting diode VL4, one end of the first resistor R9, one end of the second resistor R10, a positive electrode of the silicon switch diode VD3, a pin 4 of a reset end of the time base integrated circuit A8 and a pin 8 of the positive power supply input end of the positive power supply, a pin 8 of the relay K5 is connected with a power supply input end of the solid recording integrated circuit A5 through leads, a negative electrode of the electrolytic capacitor integrated circuit A6, a negative electrode of the time base integrated circuit A6 and a negative electrode of the solid recording integrated circuit A2, a negative electrode of the integrated circuit A2 are connected with a negative electrode of the other end of the audio frequency integrated circuit A2 through leads of the electrolytic capacitor integrated circuit A2, the electrolytic capacitor integrated circuit A6, the other end of the electrolytic capacitor C6, the resistor VT6, the resistor C6, the audio frequency integrated circuit A2 and the audio frequency integrated circuit, the audio frequency integrated circuit A2 through a trigger terminal of the resistor, the resistor R6, the resistor R7 and the other end of the audio frequency switch integrated circuit A2, the pin 3 of the positive power output end of the time base integrated circuit A8 is connected with the NPN triode base VT7 through a lead, the collector of the NPN triode VT7 is connected with the negative power input end of the relay K5 through a lead, when the second alarm unit is installed in the plastic box, the button of the power switch SC is exposed out of a fourth opening from left to right at the upper end of the front part of the plastic box, the front end of the second light emitting diode VL4 is exposed out of a fifth opening from left to right at the upper end of the front part of the plastic box, so that the power switch SC can be conveniently opened and closed outside the plastic box, the light emitting condition of the second light emitting diode VL4 is observed outside the plastic box, the loudspeaker B2 is positioned on the rear side of a metal mesh enclosure at the right part of the front lower end of the plastic box, the front end of the first light emitting diode VL3 is exposed out of a second opening at the lower right part of the front part of the plastic box, the sound emitted by the loudspeaker B2 penetrates outwards, and the light emitting condition of the first light emitting diode VL3 is observed outside the plastic box. The model of the timer A10 is X0051, the working voltage is 1.5V, the upper part of the front end of the timer A is provided with a liquid crystal display screen which can display minutes, seconds and milliseconds, the lower part of the front end of the timer A is provided with three keys, the first key is a countdown minute setting key, the second key is a countdown second setting key, the third key is a start/stop key, when the third key is pressed for the first time, the timer A10 starts to count time, when the third key is pressed for the second time, the timer A10 stops counting time, when the timer A10 is arranged in a plastic box, the liquid crystal display screen and the three keys at the front part are positioned outside an opening at the lower middle part of the front part of the plastic box so as to be convenient for watching the counting numbers on the liquid crystal display screen outside the plastic box, the three keys are operated outside the plastic box, 1 pin at the input end of an anode power supply of the timer A10 is connected in series with two silicon rectifier diodes VD4 and VD5, and 2 pins at the input end of the cathode power supply of the timer A10 are connected in series with two silicon rectifier diodes VD6 and VD7. The positive electrode of the lead-acid storage battery G2 at the positive electrode power supply input end of the voltage stabilizing unit is connected with one end of the charging socket CZ through a lead; the three ends of the positive power output end of the voltage stabilizing unit are fixedly connected with the 3 pin of an output voltage stabilizer A4, the positive electrode of a silicon rectifier diode VD5 at the positive power input end of the timer and the 1 pin of a wireless receiving circuit A5 at the positive power input end of the wireless receiving unit through leads; the normally open contact end of a relay K2 at the output end of a first positive power supply of the wireless receiving unit is connected with 4 pins of a time base integrated circuit A7 at the input end of the positive power supply of the first alarm unit through a lead; the normally open contact end of a relay K3 at the output end of a second positive power supply of the wireless receiving unit is connected with the pin 4 of the input end group integrated circuit A8 of the positive power supply of the second alarm unit through a lead; the negative power output end of the voltage stabilizing unit is connected with the negative electrode of a lead-acid storage battery G2 and the other end of the charging socket CZ, the negative power input end of the wireless receiving unit is connected with the 3 pins of a wireless receiving circuit A5, the 1 pin of a time base integrated circuit A7 at the negative power input end of the first alarm unit, the 1 pin of a time base integrated circuit A8 at the negative power input end of the second alarm unit and the negative electrode of a silicon rectifier diode VD7 at the negative power input end of the timer are grounded through leads; the first alarm unit control signal output two-end relay K4 controls the power input end and the normally open contact end, the second alarm unit control signal output two-end relay K5 controls the power input end and the normally open contact end, and the two power contacts under the start/stop key TJ on the timer A10 are respectively connected through leads.

As shown in fig. 4, when the battery G1 of the detection unit is dead, the battery G1 can be taken out and charged by an external 12V power supply charger. Before the throwing grenade shell simulates throwing grenades to train, a user combines an external timer (for example, a mobile phone timing function) to adjust a handle in advance through adjusting an adjustable resistor RP1 of a time circuit of a detection unit, so that the time circuit can output a positive power supply to enter a1 pin at the input end of a positive power supply of a wireless transmitting circuit A2 of a first wireless transmitting facility of the detection unit after a specified time according to the requirement of the user, and the grenades explode after the delay time is up after the real grenades are simulated to be thrown; when the adjustable resistor RP1 is adjusted to the left, the time circuit outputs a positive power supply to enter the 1 pin of the positive power supply input end of the first wireless transmission facility A2 of the detection unit after a relatively long time, and when the adjustable resistor RP1 is adjusted to the right, the time circuit outputs a positive power supply to enter the 1 pin of the positive power supply input end of the first wireless transmission facility A2 of the detection unit after a relatively short time. The battery, the power switch, the reset circuit, the time circuit and the first wireless transmitting facility of the detecting unit are as follows: during training, after a trainer opens the power switch S1 and throws out the elastic shell, a 12V direct-current power supply output by the battery G1 enters the control power supply input end of the relay K1 of the reset circuit, and the electrolytic capacitor C1 is charged through the normally closed contact end of the relay K1 and the adjustable resistor RP1 of the time circuit; in the time circuit, after a 12V direct current power supply output by a battery G1 charges an electrolytic capacitor C1 through an adjustable resistor RP1, when the time circuit starts, a pin 2 of a time base integrated circuit A1 is at a low potential, the time base integrated circuit A1 is under the interaction of a silicon switch diode VD1 and a resistor R1 which are peripheral elements of the time base integrated circuit A1, the pin 3 outputs a high potential, after a certain time interval (a specific time user throws a real grenade out before using the time base integrated circuit A, the time base integrated circuit A1 is combined with an external timer, and the time base integrated circuit A1 is reached by adjusting an unlighted resistance value of the adjustable resistor), when the upper end potential of the electrolytic capacitor C1 (namely the pin 6 of the real time base integrated circuit A1) rises to two thirds of the power supply, the time base integrated circuit A1 is reset, the pin 3 outputs a low potential, the output low potential is amplified and inverted through a PNP VT1 power, enters the pin 1 of a power supply input end of a wireless transmitting circuit A2 of a first wireless transmitting facility, therefore, the first wireless transmitting circuit A2 works electrically, and a first wireless key signal transmitting contact of a first key of the wireless transmitting circuit A2 is connected together, and a wireless signal transmitting contact is closed through a first wireless signal transmitting circuit A2 at the first path. In the reset circuit of the detection unit, the first wireless transmission facility: when 3 feet of the time circuit output low level and the wireless transmitting circuit A2 works with electricity to transmit a first path of wireless closing signal, the high level output from the PNP triode VT1 also charges an electrolytic capacitor C2 of the reset circuit through a resistor R3 of the reset circuit, after about 1 second, when the voltage at two ends of the electrolytic capacitor C2 reaches the voltage value of a battery G1, a Darlington tube composed of NPN triodes VT2 and VT3 is conducted in sequence, the low level output by collecting electrodes of the NPN triodes VT2 and VT3 enters a negative power supply input end of a relay K1, and then the relay K1 is electrified to attract the control power supply input end and a normally closed contact end to be disconnected; because the time circuit and the positive power input end of the subsequent wireless transmitting circuit A2 are input through the normally closed contact end of the relay K1, after the relay K1 is powered on and the power input end and the normally closed contact end are disconnected, the time circuit and the subsequent wireless transmitting circuit A2 lose power and stop working, the wireless transmitting circuit A2 does not transmit a first path of wireless closing signal any more, the PNP triode VT1 collector does not output high level and charges the electrolytic capacitor C2 through the resistor R3, the relay K1 continues to be powered on and attracted because the voltage charged on the electrolytic capacitor C2 can continue to maintain the conduction of the Darlington tubes VT2 and VT3, and after about 2 seconds, when the voltage charged on the electrolytic capacitor C2 can not continue to maintain the conduction of the NPN triodes VT2 and VT3, the relay K1 loses power and stops working, and the control power input end of the relay K1 can be connected with the normally closed contact end; after the power switch S1 is turned on, after the power output by the battery G1 enters the time circuit, the first wireless transmitting facility wireless transmitting circuit A2 can transmit the first wireless closing signal for 1 second at a certain interval (simulating the explosion of the grenade after a period of time delay after the real grenade is thrown out). The trigger probe and the second wireless transmitting facility are as follows: when the projectile shell is thrown out to simulate throwing of grenades, on the premise that the power switch G1 is opened, the power output by the battery G1 enters the contact ball of the vibration sensor M of the trigger probe, after the thrown projectile shell is contacted with the ground, namely, when a real grenade is thrown, the grenade body is contacted with the ground, the spring of the vibration sensor M of the trigger probe can generate shaking due to the impact effect of the projectile shell contacting the ground, so that the vibration sensor M contact ball at the lower end of the spring of the vibration sensor M generates shaking and the inner side of the inner shell of the vibration sensor M is contacted, then, the output power of the battery G1 is connected with the cathode of the unidirectional silicon controlled rectifier VS through the nut seat of the vibration sensor, the adjusting rod, the spring, the contact ball, the inner shell and the resistor R2 of the trigger probe, after the unidirectional silicon controlled rectifier VS is conducted, as the positive power input end of the wireless transmitting circuit A3 of the second wireless transmitting facility is connected with the cathode of the unidirectional silicon controlled rectifier through a wire, and then, the second wireless signal transmitting circuit A3 is connected together through a wire.

Shown in fig. 5, in the voltage stabilization unit and the charging socket: when the lead-acid storage battery G2 is out of power, the lead-acid storage battery can be charged by inserting a power plug of an external 12V power charger into a power socket CZ; after a power switch S2 of the voltage stabilizing unit is turned on, after a power supply output by the lead-acid storage battery G2 enters a pin 1 of a three-terminal fixed output voltage stabilizer A4, under the action of an internal circuit of the three-terminal fixed output voltage stabilizer A4 and peripheral component ceramic chip capacitors C1 and C2, a pin 3 of the three-terminal fixed output voltage stabilizer A4 can output a stable 5V direct-current power supply to enter a positive power supply input end of the wireless receiving unit, and then the wireless receiving unit is in a standby state after being electrified; meanwhile, the 5V dc power supply is reduced to dc 1.5V by the voltage drop of four silicon rectifier diodes VD4, VD5, VD6, and VD7, and enters the power input terminal of the timer a10, so that the timer a10 is powered on and in a standby state. In a wireless receiving unit: when the wireless receiving unit is in a standby state when being electrified, after a first path of wireless closing signal is transmitted by a first wireless transmitting facility wireless transmitting circuit A2 of the detection unit, at the moment, a wireless receiving circuit A5 of the wireless receiving unit receives the first path of wireless closing signal, and then a first high-level output end 4 pin of the wireless receiving circuit A5 outputs a high level which is limited by a resistor R5 and is subjected to power amplification and phase inversion by an NPN triode VT4 to enter a negative power supply input end of a relay K2, so that the relay K2 is electrified to attract the control power supply input end and a normally open contact end to be closed; because the positive power supply input end of the first alarm unit is connected with the normally open contact end of the relay K2 through a lead, the relay K2 is electrified to close the control power supply input end and the normally open contact end, and then the first alarm unit is electrified to work; when the wireless receiving unit is in a standby state when power is obtained, after a second wireless transmitting facility wireless transmitting circuit A3 of the detecting unit transmits a second wireless closed signal, at the moment, a wireless receiving circuit A5 of the wireless receiving unit receives the second wireless closed signal, and then a second high-level output end 5 pin of the wireless receiving circuit A5 outputs a high level which is limited by a resistor R6 and is amplified and inverted by NPN triode VT5 power to enter a negative power supply input end of a relay K3, so that the relay K3 is electrified to attract the control power supply input end and a normally open contact end to be closed; because the positive power supply input end of the second alarm unit is connected with the normally open contact end of the relay K3 through the lead, the relay K3 is electrified to close the control power supply input end and the normally open contact end, and then the second alarm unit is electrified to work. In the first alarm unit: before the alarm device is used, an audio signal needs to be recorded in the solid recording integrated circuit A6 of the first alarm unit; during recording, a relay K2 of the wireless receiving unit controls a power supply input end and a normally open contact end to be temporarily connected by using a lead, then, a power supply switch S2 of the voltage stabilizing unit is turned on, then, the solid recording integrated circuit A6 is in a power-on standby state, then, a user presses the power supply switch SB, and speaks towards a loudspeaker B1 by using a mouth, wherein the speaking is 'grenade explosion', so that an audio signal is recorded into the solid recording integrated circuit A6, and in the recording process, the light emitting diode VL2 can be electrified to emit red light to prompt that the solid recording integrated circuit A6 is in a recording state at the moment; after recording the sound, the user closes the power switch SB and takes down the wire temporarily connected with the control power input end and the normally open contact end of the relay K2; the first high level output end of a wireless receiving circuit A5 of the wireless receiving unit outputs high level, a relay K2 is electrified to attract a control power supply input end and a normally open contact end of the relay K2 to be closed, after a first alarm unit is electrified to work, a light emitting diode VL1 can be electrified to emit red light, after a solid recording integrated circuit A6 is electrified, 2 feet and 3 feet of an audio output end of the solid recording integrated circuit can output audio signals to enter a loudspeaker B1, then the loudspeaker B1 emits loud 'grenade explosion' sound, and the sound and the red light emitted by the light emitting diode VL1 prompt a trainer to detect that the time circuit delay time of a unit is up, namely the time delay time after the real grenade is thrown out is simulated to reach the bomb body explosion. In the second alarm unit: before the alarm device is used, an audio signal needs to be recorded in the solid recording integrated circuit A9 of the second alarm unit; during recording, a relay K3 of the wireless receiving unit controls a power supply input end and a normally open contact end to be temporarily connected by using a lead, then, a power supply switch S2 of the voltage stabilizing unit is turned on, so that the solid recording integrated circuit A9 is in a power-on standby state, then a user presses the power supply switch SC, the user speaks towards a loudspeaker B2 by using a mouth, the speaking is 'grenade explosion', then, an audio signal is recorded into the solid recording integrated circuit A9, in the recording process, the light emitting diode VL4 can be electrified to emit red light, and the solid recording integrated circuit A9 is prompted to be in a recording state at the moment; after recording the sound, the user turns off the power switch SC and takes down the wire temporarily connected with the relay K3 control power input end and the normally open contact end; at wireless receiving unit's wireless receiving circuit A5 second high level output high level, relay K3 gets electric actuation its control power input end and normally open contact end closure, second alarm unit gets electric work back, emitting diode VL3 can get electric and send red light, solid recording integrated circuit A9 gets electric back, 2 feet of its audio output, 3 feet can export audio signal and get into speaker B2, then, the speaker sends out loud "grenade falls to the ground" sound, the suggestion training person plays the shell casing at this moment and has fallen to the ground, also imitate true grenade promptly and throw out back shell contact ground. In the first alarm unit: when the first alarm unit is powered on to work, a 5V direct-current power supply input from a normally open contact of the relay K2 can charge the electrolytic capacitor C5 through the resistor R8 while the solid integrated circuit A6 and the peripheral component loudspeaker B1 are powered on to work, and when the time base integrated circuit A7 is at a low potential, the time base integrated circuit A7 is in a setting state under the combined action of the peripheral component resistor R7 and the silicon switch diode VD2 thereof, the 3 feet of the time base integrated circuit A7 output a high level, the high level enters the negative power supply input end of the relay K4 through the power amplification and phase inversion of the triode NPN VT6, so that the relay K4 is powered on to close the control power supply input end and the normally open contact end, after about 0.5 second, the upper end potential of the electrolytic capacitor C5 (the potential of the 6 feet of the instant base integrated circuit A7) rises to two thirds of the power supply voltage, the integrated circuit A7 is reset, the 3 feet of the integrated circuit A7 does not output the high potential, and the relay K4 is not powered on any more; because the normally open contact end and the control power supply input end of the relay K4 are respectively connected with the two power supply contacts under the start/stop key TJ of the timer A10 through the conducting wires, after the relay K4 is electrified and attracted, the two power supply contacts under the start/stop key TJ of the timer A10 can be closed for 0.5 second, and therefore under the action of an internal circuit of the timer A10, the timer A10 starts timing or stops timing. In the second alarm unit: when the second alarm unit is powered on to work, a 5V direct-current power supply input from a normally open contact of the relay K3 can charge the electrolytic capacitor C6 through the resistor R10 while the solid integrated circuit A9 and the peripheral component loudspeaker B2 are powered on to work, and when the second alarm unit starts to work, the No. 2 pin of the time-base integrated circuit A8 is at a low potential, so that the time-base integrated circuit A8 is in a setting state under the combined action of the peripheral component resistor R9 and a silicon switch diode VD3 thereof, the No. 3 pin of the time-base integrated circuit A8 outputs a high level, the high level enters the negative power supply input end of the relay K5 through power amplification and phase inversion of a triode VT7, so that the relay K5 is powered on to close the control power supply input end and the normally open contact end, and after about 0.5 second, the upper end potential of the electrolytic capacitor C6 (the potential of the No. 6 pin of the instant base integrated circuit A8) rises to two thirds of the power supply voltage, the time-base integrated circuit A8 is reset, the time-base integrated circuit A8 is not powered on, the 3 pin outputs a high potential, and the relay K5 is not powered on any more; because the normally open contact end and the control power supply input end of the relay K5 are respectively connected with the two power supply contacts under the start/stop key TJ of the timer A10 through the conducting wires, after the relay K5 is electrified and attracted, the two power supply contacts under the start/stop key TJ of the timer A10 can be closed for 0.5 second, and therefore under the action of an internal circuit of the timer A10, the timer A10 starts timing or stops timing. In actual use, when the time of throwing the shell is too early, the time delay time of a time circuit of the shell falling detection unit is not reached, a second wireless transmitting facility of the detection unit transmits a second wireless closing signal under the action of a trigger probe of the detection unit, after the wireless receiving unit receives the second wireless closing signal, the second alarm unit sends out sound and light to prompt the shell to fall, and meanwhile, the second alarm unit enables two power contacts under a start/stop key TJ of a timer A10 to be closed for 0.5 second, so that the timer A10 starts to time; when the time set by the time circuit of the detection unit is up, namely the actual combat of the grenade is simulated, after the delay time of the grenade is up, the time circuit enables the first wireless transmitting facility of the detection unit to transmit a first wireless closing signal, and after the wireless receiving unit receives the first wireless closing signal, the first alarm unit sends out an acousto-optic prompt time circuit to set the time to be up, and simultaneously two power contacts under a start/stop key TJ of a timer A10 are closed for 0.5 seconds, so that the timer A10 stops timing; because the second alarm unit gives out the acousto-optic prompt before the first alarm unit, at the moment, the trainer can know that the missile shell falls to the ground first according to the acousto-optic prompt given out by the second alarm unit, namely, the throwing time is too early, then the trainer watches the digital display on the timer A10, can clearly know how much the throwing time is earlier, and the missile shell is thrown after a certain time according to the time of the first throwing advance when the missile shell is thrown for the second time, so that the best training effect and the best fighting effect in wartime are achieved. When the time for throwing the missile shell by a thrower is too late, the time circuit of the missile shell not falling to the ground detection unit sets the time to be up, namely the actual combat of the grenade is simulated, the grenade explodes after the time delay time is up, the time circuit enables the first wireless emission facility of the detection unit to emit a first wireless closing signal, the wireless receiving unit receives the first wireless closing signal, the first alarm unit can emit sound and light to prompt the time set by the time circuit to be up, and two power contacts under a start/stop key TJ of the timer A10 are closed for 0.5 second, so the timer A10 starts to time; when the shell body falls to the ground, a second wireless transmitting facility of the detection unit transmits a second wireless closing signal under the action of a trigger probe of the detection unit, and after the wireless receiving unit receives the second wireless closing signal, the second alarm unit sends out sound and light to prompt the shell body to fall to the ground, and two power contacts under a start/stop key TJ of the timer A10 are closed for 0.5 second, so that the timer A10 stops timing; because the first alarm unit sends out the acousto-optic suggestion earlier than the second alarm unit this moment, the training person can know according to the first alarm unit sends out the acousto-optic suggestion earlier that it is that the shell has not fallen to the ground timing time has arrived, namely throw time is too late, then, the training person watches the digital display on the time-recorder, can know clearly how much the throw time is late, throw certain time ahead according to the time of first throw delay when throwing the shell the second time to reach best training effect and best combat effects during wartime.

Fig. 4, in the trigger probe of the detection unit: the resistance value of the resistor R2 is 1K; the unidirectional silicon controlled rectifier VS is an MCR100/1 type plastic-encapsulated unidirectional silicon controlled rectifier. In the time circuit of the detection unit: the resistance value of the resistor R1 is 1K; the specification of the adjustable resistor is 1M; the silicon switch diode VD1 is IN4148; the model of the electrolytic capacitor C1 is 1 muF/25V, and the model of the PNP triode VT1 is 9012. In the reset circuit of the detection unit: the resistance value of the resistor R3 is 50 omega, and the resistance value of the resistor R4 is 100K; the model numbers of the NPN triodes VT2 and VT3 are 9013; the model of the electrolytic capacitor C2 is 4.7 mu F/25V; the relay K1 is an omRonG6L/1P/5VDC type subminiature relay.

Fig. 5, in the voltage stabilization unit: the chip capacitances C3 and C4 are 0.33 μ F and 0.1 μ F, respectively. In a wireless receiving unit: the resistance values of the resistors R5 and R6 are 1K; the models of the relays K2 and K3 are YG4100/DC5V; the NPN triodes VT4 and VT5 are 9013 in model number. In the first alarm unit: the working currents of the light emitting diodes VL1 and VL2 are 5mA; speaker B1 is a 0.5W power moving coil speaker; the resistance value of the resistor R7 is 2K, and the resistance value of the resistor R8 is 100 omega; the silicon switching diode VD2 is model 1N4148; the electrolytic capacitor C5 is 4.7 muF/25V, and the NPN triode VT6 is 9013; the relay K4 is an omRonG6L/1P/5VDC type subminiature relay. In the second alarm unit: the working currents of the light emitting diodes VL3 and VL4 are 5mA; speaker B2 is a 0.5W power moving coil speaker; the resistance value of the resistor R9 is 2K, and the resistance value of the resistor R10 is 100 omega; the silicon switching diode VD3 is model number 1N4148; the model of the electrolytic capacitor C6 is 4.7 muF/25V; the NPN triode VT7 model is 9013; the relay K5 is an omRonG6L/1P/5VDC type subminiature relay.

The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the scope of the present invention should be included in the scope of the present invention.

Claims

1. A training device for throwing grenades is characterized by comprising a grenade body, a detection unit, a voltage stabilizing unit, a charging socket, a wireless receiving unit, a first alarm unit, a second alarm unit and a timer, wherein the grenade body comprises a shell and a balancing weight, the shape of the shell is consistent with that of the grenade, the shell is made of impact-resistant high-strength engineering plastics, the balancing weight is made of steel, the shell and the balancing weight are arranged at the lower end of the upper part of the shell when being manufactured, the upper inner part of the shell is of a hollow cylindrical structure, the hollow cylindrical part of the shell is provided with right-handed internal threads from top to bottom, the detection unit comprises a shell body, a shell body cover, a battery box, a power switch, a trigger probe, a time circuit, a first wireless transmitting facility, a second wireless transmitting facility and a reset circuit, the shell body and the shell body cover are made of impact-resistant high-strength engineering plastics, the outer side end of the shell is provided with right-handed external threads from top to bottom, the middle part in the shell is of a hollow cylindrical structure, the upper end of the hollow cylindrical part of the shell is provided with left-handed internal threads, the outer side end of the ring shell cover is provided with left-handed external threads from top to bottom, the middle part of the shell cover is provided with an opening, the battery box, the power switch, the trigger probe, the time circuit, the first wireless transmitting facility, the second wireless transmitting facility and the reset circuit are positioned in the shell, the power switch is used for shifting the power switch, the positive electrode of the battery is connected with one end of the power switch through a lead, the other end of the power switch is connected with a first positive power input end of the reset circuit and a control power input end of the reset circuit through leads, the positive power output end of the reset circuit is connected with the positive power input end of the time circuit and the positive power input end of the trigger probe through leads, the positive power output end of the time circuit is connected with the positive power input end of the first wireless transmitting facility, the negative power input end of the second wireless transmitting facility, the positive power input end of the second wireless transmitting facility, the negative power input end of the second wireless transmitting facility, the trigger probe and the trigger probe are connected through leads, and the trigger probe is connected with the battery through a lead, the second positive power input end of the reset circuit is connected through a lead, the positive power output end of the trigger probe is connected with the positive power input end of the second wireless transmitting facility through a lead, the cathode of the battery is encapsulated with the cathode power input end of the time circuit, the cathode power input end of the first wireless transmitting facility, the cathode power input end of the second wireless transmitting facility and the cathode power input end of the reset circuit through leads, the shell is encapsulated by silicon rubber, after encapsulation, the lower part of the battery box, the lower part of the power switch, the trigger probe, the time circuit, the first wireless transmitting facility, the second wireless transmitting facility and the reset circuit are positioned in the silicon rubber, the upper cover of the battery box and the operating handle of the power switch are positioned on the upper part of the silicon rubber, the battery is positioned in the battery box, the battery can be placed in the battery box on the sealed silicon rubber, and the operating handle of the power switch can be operated on the sealed silicon rubber, the casing of the detection unit is arranged in the hollow cylindrical part of the shell of the bullet casing by screwing the right-handed external thread at the outer side end of the casing of the detection unit into the right-handed internal thread at the hollow cylindrical part of the shell of the bullet casing, after the casing is completely screwed into the shell, the height of the upper end of the casing is consistent with that of the upper end of the shell, the left-handed external thread of the casing cover of the detection unit is screwed into the left-handed internal thread of the casing of the detection unit, the casing cover is arranged at the upper part of the casing, the voltage stabilizing unit, the wireless receiving unit, the first alarm unit and the second alarm unit are welded on a circuit board through tin, the charging socket and the timer are arranged in a plastic box, the upper end of the front part of the plastic box is provided with five openings from left to right, the left part and the right part of the front lower end of the plastic box are respectively provided with two openings, the front ends of the two openings are provided with metal mesh covers, and the right end of the plastic box is provided with one opening, the upper left part of the rear side of the plastic box is provided with an opening, the lower middle part of the front end of the plastic box is provided with an opening, the positive power input end of the voltage stabilizing unit is connected with one end of the charging socket through a lead, the positive power output end of the voltage stabilizing unit is connected with the positive power input end of the timer and the positive power input end of the wireless receiving unit through leads, the first positive power output end of the wireless receiving unit is connected with the positive power input end of the first alarm unit through a lead, the second positive power output end of the wireless receiving unit is connected with the positive power input end of the second alarm unit through a lead, the negative power output end of the voltage stabilizing unit is connected with the other end of the charging socket, the negative power input end of the wireless receiving unit, the negative power input end of the first alarm unit, the negative power input end of the second alarm unit and the negative power input end of the charging socket are grounded through leads, and the two power contacts under a start/stop key on the timer are respectively connected through leads; the trigger probe of the detection unit consists of a vibration sensor, a resistor and a one-way silicon controlled rectifier, wherein the vibration sensor consists of an outer shell, an inner shell, a spring, a contact ball, a base plate, a circular cover, a nut seat and an adjusting rod, the outer shell is made of plastic, the right upper end of the outer shell is provided with an opening, the inner upper end of the outer shell is provided with an internal thread, the inner shell, the spring, the contact ball, the base plate, the circular cover, the nut seat and the adjusting rod are made of copper materials, the lower part of the inner shell is in a pointed cone shape, the outer upper part of the inner shell is sleeved below the internal thread at the upper end of the outer shell, the inner upper end of the outer shell and the outer upper part of the inner shell are in an interference fit state, silicon rubber is filled between the inner lower end of the outer shell and the outer lower end of the inner shell, the base plate is circular, the contact ball is welded at the lower part of the spring, the upper part of the spring is welded at the lower part of the base plate, the adjusting rod is provided with external threads from top to bottom, the lower part of the adjusting rod is welded on the upper part of the base plate, the outer side of the annular cover is provided with external threads, the middle part of the annular cover is provided with an opening, the nut seat is welded on the opening in the middle part of the annular cover, the upper threads of the adjusting rod are screwed into the internal threads of the nut seat, the external threads from top to bottom are screwed into the internal threads at the upper end inside the outer shell through the external threads outside the annular cover, the annular cover is installed at the upper end inside the outer shell, after the annular cover is installed, the upper part of the adjusting rod is positioned outside the upper part of the outer shell, the uppermost end of the adjusting rod is welded with a circular adjusting handle, one conducting wire is connected with the inner shell and led out from the opening at the upper end on the right side of the outer shell, the other conducting wire is connected with the nut seat, when the adjusting rod rotates clockwise along the nut seat, the contact ball moves downwards, and under the condition of small external impact force, the contact ball contacts with the inner side of the inner shell, when the adjusting rod rotates anticlockwise along the nut seat, the contact ball moves upwards, and only contacts with the inner side of the inner shell under the condition of large external impact force, the nut seat of the vibration sensor is connected with the anode of the unidirectional silicon controlled rectifier through a lead, the inner shell of the vibration sensor is connected with one end of the resistor through a lead, and the other end of the resistor is connected with the control electrode of the unidirectional silicon controlled rectifier through a lead; the time circuit of the detection unit consists of a resistor, an adjustable resistor, a silicon switch diode, an electrolytic capacitor, a time base integrated circuit and a PNP triode, wherein the model of the time base integrated circuit is NE555, the negative pole of the silicon switch diode and the pin 4 of the reset input end of the time base integrated circuit are connected with the pin 8 of the positive power supply input end, one end of the resistor and one end of the adjustable resistor through leads, the anode of the silicon switch diode and the anode of the electrolytic capacitor, the pin 2 of the trigger input end of the time base integrated circuit is connected with the pin 6 of the threshold end and the other end of the adjustable resistor through leads, the pin 3 of the output end of the time base integrated circuit is connected with the base of the PNP triode through leads, the pin 1 of the negative power supply input end of the time base integrated circuit and the other end of the resistor,

The cathode of the electrolytic capacitor is grounded through a lead, and the time circuit is adjustable after the lower part in the shell of the detection unit is sealed by silicon rubber

The wiring pin of the resistor is positioned in the silicon rubber, and the adjusting handle of the adjustable resistor is positioned on the outer side of the upper part of the sealed silicon rubber so as to facilitate the adjustment of the resistor

An adjusting handle for adjusting the adjustable resistance at the upper part of the sealed silicon rubber, a time circuit is arranged in the shell, and a user can use the time circuit to adjust the adjustable resistance

The adjusting handle of the adjustable resistor is operated outside the shell through the opening in the middle of the shell cover, so that different resistors of the adjustable resistor can be adjusted

A value; the first wireless transmitting facility of the detection unit is a wireless transmitting circuit of a ZYO300-A72 type wireless transmitting/receiving component, the working voltage is 9 to 12V, the wireless signal transmitting distance is 300m, the wireless transmitting facility is provided with a flexible wire as an antenna, the antenna is led out from an opening in the middle of the shell cover, the wireless transmitting circuit is provided with two wireless signal transmitting key switches, two paths of wireless closed signals which do not interfere with each other can be transmitted by the wireless transmitting circuit by pressing the two wireless signal transmitting key switches respectively, and two power contacts under the first wireless signal transmitting key switch on the wireless transmitting circuit are connected together through a wire; the reset circuit of the detection unit comprises a resistor, an NPN triode, an electrolytic capacitor and a relay, wherein the NPN triode and the resistor are respectively provided with two resistors, one end of a first resistor is connected with one end of a second resistor, and the anode of the electrolytic capacitor is connected through a lead, the other end of the second resistor is connected with the base of the first NPN triode through a lead, the emitter of the first NPN triode is connected with the base of the second NPN triode through a lead, the collector of the first NPN triode is connected with the collector of the second NPN triode, and the power input end of the cathode of the relay is connected with the power input end of the anode of the electrolytic capacitor through leads, the cathode of the electrolytic capacitor is grounded with the emitter of the second NPN triode, and the power input end of the anode of the relay is connected with the control power input end of the relay through a lead; the voltage stabilizing unit comprises a lead-acid storage battery, a three-terminal fixed output voltage stabilizer, ceramic chip capacitors and a power switch, wherein the power switch is a toggle power switch, the ceramic chip capacitors are two, the type of the lead-acid storage battery is 12V/4AH, the type of the three-terminal fixed output voltage stabilizer is 7805, the anode of the lead-acid storage battery is connected with one end of the power switch through a wire, the other end of the power switch is connected with 1 pin of the anode power input end of the three-terminal fixed output voltage stabilizer and one end of the first ceramic chip capacitor through a wire, the cathode of the lead-acid storage battery is connected with the other end of the first ceramic chip capacitor, 2 pins of the cathode power input end of the three-terminal fixed output voltage stabilizer and one end of the second ceramic chip capacitor are grounded through wires, 3 pins of the anode power output end of the three-terminal fixed output voltage stabilizer are connected with the other end of the second ceramic chip capacitor through wires, and when the power switch is installed in the plastic box, an operating handle of the power switch is positioned outside a first hole from left to right at the upper end of the front of the plastic box, so that the power switch can be conveniently opened and closed outside the plastic box; the wireless receiving unit consists of a wireless receiving facility, a resistor, a relay and an NPN triode, wherein the resistor, the relay and the NPN triode are respectively provided with two, the wireless receiving facility is a wireless receiving circuit of a ZYO300-A72 type wireless transmitting/receiving assembly, the wireless receiving circuit of the ZYO300-A72 type wireless transmitting/receiving assembly can receive a wireless closing signal transmitted by the wireless transmitting circuit of the ZYO300-A72 type wireless transmitting/receiving assembly, the wireless receiving circuit is provided with a matched telescopic antenna, the telescopic antenna is arranged on the left opening on the rear side of the plastic box by a screw nut through the opening at the lower end of the telescopic antenna, after the telescopic antenna is arranged, the pull rod antenna is positioned outside the plastic box, the wireless receiving circuit is provided with two high-level output ends, a pin 1 of a positive power supply input end of the wireless receiving circuit is connected with a positive power supply input end of a first relay, a first relay control power supply input end, a positive power supply input end of a second relay and a second relay control power supply input end through a lead, a pin 4 of the first high-level output end of the wireless receiving circuit is connected with one end of a first resistor through a lead, the other end of the first resistor is connected with a base electrode of the first NPN triode through a lead, a collector electrode of the first NPN triode is connected with a negative power supply input end of the first relay through a lead, a pin 5 of the second high-level output end of the wireless receiving circuit is connected with one end of a second resistor through a lead, the other end of the second resistor is connected with a base electrode of the second NPN triode through a lead, a collector electrode of the second NPN triode is connected with a negative power supply input end of the second relay through a lead, a pin 3 of the negative power supply input end of the wireless receiving circuit is connected with an emitter electrode of the first NPN triode and the second NPN triode through a lead; the first alarm unit consists of a light emitting diode, a solid recording integrated circuit, a power switch, a loudspeaker, a resistor, a silicon switch diode, an electrolytic capacitor, an NPN triode, a relay and a time base integrated circuit, wherein the power switch is a point-operated power switch, the model of the solid recording integrated circuit is BA9902, the model of the time base integrated circuit is NE555, the resistor and the light emitting diode respectively have two numbers, the light emitting diode emits red light when being electrified, a pin 4 at the positive power input end of the solid recording integrated circuit is connected with the positive pole of the first light emitting diode, the positive pole of the second light emitting diode, one end of the first resistor, one end of the second resistor, the positive pole of the silicon switch diode, a pin 4 at the reset end of the time base integrated circuit, a pin 8 at the positive power input end of the relay and a pin 8 at the negative power output end of the solid recording integrated circuit, a pin 7 at the negative power output end of the solid recording integrated circuit is connected with the negative pole of the second light emitting diode through a lead, the other end of the second resistor is connected with the anode of the silicon switch diode, the trigger end 2 pin and the threshold end 6 pin of the time base integrated circuit, and the anode of the electrolytic capacitor through leads, the anode power output end 3 pin of the time base integrated circuit is connected with the base electrode of the NPN triode through leads, the collector electrode of the NPN triode is connected with the power input end of the relay through leads, when the first alarm unit is installed in the plastic box, a button of the power switch is exposed outside a second opening from left to right in the upper end of the front part of the plastic box, the front end of the second light-emitting diode is exposed outside a third opening from left to right in the upper end of the front part of the plastic box, so that the power switch can be conveniently opened and closed outside the plastic box, the light-emitting condition of the second light-emitting diode can be conveniently observed outside the plastic box, the loudspeaker is positioned on the rear side of the metal mesh enclosure at the left part of the front lower end of the plastic box, and the front end of the first light-emitting diode is exposed outside the second opening at the left part of the front lower end of the plastic box, so that the sound emitted by the loudspeaker can conveniently penetrate outwards, and the light-emitting condition of the first light-emitting diode can be observed outside the plastic box; the model of the timer is X0051, the working voltage is 1.5V, the upper part of the front end of the timer is provided with a liquid crystal display screen which can display minutes, seconds and milliseconds, the lower part of the front end of the timer is provided with three keys, the first key is a countdown minute setting key, the second key is a countdown second setting key, the third key is a start/stop key, when the third key is pressed for the first time, the timer starts to count up, when the third key is pressed for the second time, the timer stops counting up, when the timer is arranged in the plastic box, the liquid crystal display screen and the three keys at the front part are positioned outside an opening at the lower middle part of the front part of the plastic box so as to be convenient for watching counting numbers on the liquid crystal display screen outside the plastic box, the three keys are operated outside the plastic box, the 1 pin of the positive power supply input end of the timer is connected with two silicon rectifier diodes in series, and the 2 pin of the negative power supply input end of the timer is connected with two silicon rectifier diodes in series.