Compressed air energy storage air gun with bullet wheel

Abstract

The compressed air energy storage air gun comprises a gun rack, a gun barrel and a trigger assembly, the gun barrel and the trigger assembly are arranged on the gun rack, the trigger assembly is provided with a loading push rod which can move along the gun rack and stretch into the gun barrel to trigger bullets, and the gun rack is provided with an elastic wheel assembly beside one end, where the loading push rod stretches into, of the gun barrel. The bullet wheel is provided with a plurality of bullet storage holes formed in the circumferential direction of the bullet wheel at intervals, the bullet storage holes are used for storing bullets, and the bullet wheel can rotate relative to the gun rack so that any bullet storage hole can be communicated with the gun barrel. The bullet wheel assembly capable of storing a plurality of bullets is arranged beside the end, where the loading push rod extends, of the gun barrel, and the bullet wheel capable of rotating relative to the gun frame to enable one of the bullet storage holes storing the bullets to be communicated with the gun barrel is arranged, so that the air gun can achieve multiple times of shooting after being matched with the bullets at a time, the bullet matching frequency is reduced, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of air guns, in particular to a compressed air energy storage air gun with a spring wheel. Background Art

[0002] An air gun is a cold-powered shooting device that uses the instantaneous release of compressed gas to propel the bullet and is widely used in the field of shooting. Existing air guns include a gun frame, a barrel, and a trigger assembly. The trigger assembly has a loading push rod that can move along the gun frame and extend into the barrel to fire the bullet. The steps for firing a bullet with an existing air gun are as follows: first, place the bullet into the barrel, then pull the trigger to allow the compressed gas to push the loading push rod so that the loading push rod extends into the barrel to fire the bullet, thereby firing the bullet. Since the air gun can only be loaded with one bullet at a time, it needs to be reloaded after each firing, which is cumbersome to operate and cannot fire bullets continuously. Utility Model Content

[0003] The utility model aims to provide a compressed air energy storage air gun with a bullet wheel, so as to solve the problem that the existing air gun can only be loaded with one bullet at a time, resulting in the need to reload bullets after each firing, which is cumbersome to operate.

[0004] The utility model is realized by the following technical solutions:

[0005] A compressed air energy storage air gun with a bullet wheel comprises a gun frame, a gun barrel and a trigger assembly arranged on the gun frame, wherein the trigger assembly has a loading push rod that can move along the gun frame and extend into the gun barrel to fire bullets, and the gun frame is provided with a bullet wheel assembly beside one end of the gun barrel for the loading push rod to extend into, the bullet wheel assembly has a bullet wheel, and the bullet wheel has a plurality of bullet storage holes arranged at intervals in the circumference thereof, the bullet storage holes are used to store bullets, and the bullet wheel can rotate relative to the gun frame to make any of the bullet storage holes communicate with the gun barrel.

[0006] Furthermore, the bullet wheel assembly also has a wheel shell, the bullet wheel is arranged in the wheel shell and is rotatably connected to the wheel shell, the wheel shell is respectively connected to the gun frame and the barrel so that the loading push rod can extend into the barrel through the wheel shell and the bullet storage hole, and a plurality of the bullet storage holes are arranged at intervals in the circumferential direction of the bullet wheel with the connection between the bullet wheel and the wheel shell as the center of the circle, and the bullet wheel can rotate with the connection between the bullet wheel and the wheel shell as the axis so that any of the bullet storage holes is connected to the barrel.

[0007] Furthermore, the spring wheel has an outer stopper protruding from its outer annular wall, and the wheel housing has an inner stopper protruding from its inner annular wall and capable of cooperating with the outer stopper to limit the rotation of the spring wheel.

[0008] Furthermore, the wheel housing comprises a front housing detachably fixedly connected to the gun frame and a rear housing detachably fixedly connected to the front housing.

[0009] Furthermore, a compressed air component and an energy storage component are provided on the gun frame, and the compressed air component is connected to the energy storage component, the energy storage component includes a gas cylinder, a gas valve arranged at one end of the gas cylinder, and a rubber-coated component arranged at the connection between the gas valve and the gun barrel, a tail firing pin is fixed on the rubber-coated component, and the trigger assembly includes a trigger frame fixed on the gun frame, and a loading push rod, a trigger, a trigger buckle and a hammer arranged on the trigger frame, the trigger is connected to the trigger buckle, the loading push rod can move along the gun frame, the loading push rod is movably connected to the hammer, and controls the hammer to be reset and is mounted on the trigger buckle, and a hammer spring is also connected to the hammer; when the compressed air component compresses air to the gas valve, the rubber-coated component seals the connection between the gas valve and the gun barrel, and after the trigger assembly is pulled, the hammer presses on the tail firing pin, and the rubber-coated component is separated from the connection between the gas valve and the gun barrel.

[0010] Furthermore, the trigger and the trigger buckle are both fixed to the trigger frame via a rotating shaft, the trigger is fixedly connected to the trigger buckle, a hook groove and a protrusion are provided on the hammer, a first hook matching with the hook groove is provided on the trigger buckle, and a second hook matching with the protrusion is provided on the loading push rod.

[0011] Furthermore, the trigger assembly also includes a loading safety device and a trigger safety device, the loading safety device includes a rear limit pin arranged on the trigger frame and capable of sliding relative to the trigger frame, the bottom of the rear limit pin presses on the top of the trigger and limits the rotation of the trigger, the loading push rod is arranged above the rear limit pin, and the trigger safety device includes a trigger safety arranged on the trigger frame and capable of moving relative to the trigger frame, and the trigger is provided with a hook matching the trigger safety.

[0012] Furthermore, the trigger safety device also includes a safety sheath, and the compressed air assembly is provided with a protrusion, and the protrusion cooperates with the safety sheath.

[0013] Furthermore, the compressed air assembly includes a piston arranged in the air cylinder, and a piston bowl and a connecting rod respectively connected to both sides of the piston, the connecting rod is also transmission-connected to a pressure rod, the air valve is arranged on the air cylinder and located on one side of the piston bowl, the air valve is also provided with a one-way valve, and the one-way valve is connected to an air valve inner spring.

[0014] The advantage of the technical solution is that a bullet wheel assembly capable of storing multiple bullets is arranged next to one end of the gun barrel where the loading push rod extends, and the bullet wheel can be rotated relative to the gun frame to connect one of the multiple bullet storage holes storing multiple bullets with the gun barrel, so that the air gun can be loaded once to achieve multiple firings, reduce the number of loading times, and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0017] Figure 1 It is a three-dimensional diagram of a compressed air energy storage air gun with a bullet wheel disclosed in an embodiment;

[0018] Figure 2 It is a partial exploded view of a compressed air energy storage air gun with a bullet wheel disclosed in an embodiment;

[0019] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0020] Figure 4 It is a partial cross-sectional view of a compressed air energy storage air gun with a bullet wheel disclosed in an embodiment;

[0021] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example: Figure 1-5As shown, the compressed gas energy storage air gun with a bullet wheel comprises a gun frame 1, a gun barrel 2 and a trigger assembly 3 arranged on the gun frame 1, wherein the trigger assembly 3 has a loading push rod 301 that can move along the gun frame 1 and extend into the gun barrel 2 to fire bullets, and the gun frame 1 is provided with a bullet wheel assembly 4 beside one end of the gun barrel 2 for the loading push rod 301 to extend into, and the bullet wheel assembly 4 has a bullet wheel 401, and the bullet wheel 401 has a plurality of bullet storage holes 402 arranged at intervals in the circumference thereof, and the bullet storage holes 402 are used to store bullets, and the bullet wheel 401 can rotate relative to the gun frame 1 to make any bullet storage hole 402 communicate with the gun barrel 2. Among them, when the bullet wheel 401 makes a bullet storage hole 402 communicate with the gun barrel 2, the loading push rod 301 can extend into the bullet storage hole 402 to make the bullet stored in the bullet storage hole 402 ejected through the gun barrel 2. The present embodiment provides a compressed air energy storage air gun with a bullet wheel to solve the problem that the existing air gun can only load one bullet at a time, resulting in the need to reload bullets after each firing, which is cumbersome to operate. The invention mainly comprises a bullet wheel assembly 4 capable of storing multiple bullets is arranged next to one end of the barrel 2 for the loading push rod 301 to extend therein, and a bullet wheel 401 capable of rotating relative to the gun frame 1 to connect one of the multiple bullet storage holes 402 storing multiple bullets with the barrel 2, so that the air gun can fire multiple times after loading once, thereby reducing the number of loading times and simplifying the operation.

[0024] In the embodiment of the utility model, the bullet wheel assembly 4 further comprises a wheel housing 403, the bullet wheel 401 is arranged in the wheel housing 403 and is rotatably connected to the wheel housing 403, the wheel housing 403 is respectively connected to the gun frame 1 and the barrel 2 so that the loading push rod 301 can extend into the barrel 2 through the wheel housing 403 and the bullet storage hole 402, and a plurality of bullet storage holes 402 are arranged at intervals in the circumferential direction of the bullet wheel 401 with the connection between the bullet wheel 401 and the wheel housing 403 as the center of the circle, and the bullet wheel 401 can rotate with the connection between the bullet wheel 401 and the wheel housing 403 as the axis so that any bullet storage hole 402 is connected to the barrel 2. Since the bullet wheel assembly 4 comprises the wheel housing 403, the bullet wheel 401 is arranged in the wheel housing 403 and is rotatably connected to the wheel housing 403, the bullet pre-stored in the bullet storage hole 402 and the bullet wheel 401 are stably assembled. Furthermore, since the spring wheel 401 is rotatably connected to the wheel housing 403, the spring wheel 401 can be rotated relative to the gun frame 1 to connect any bullet storage hole 402 with the gun barrel 2, and the structure is simple and easy to implement.

[0025] In the embodiment of the utility model, the spring wheel 401 has an outer stopper 404 protruding from its outer annular wall, and the wheel shell 403 has an inner stopper 405 protruding from its inner annular wall and cooperating with the outer stopper 404 to limit the rotation of the spring wheel 401. Since the spring wheel 401 has the outer stopper 404 and the wheel shell 403 has the inner stopper 405 cooperating with the outer stopper 404 to limit the rotation of the spring wheel 401, the spring wheel 401 cannot rotate 360 ​​degrees in the same direction, thereby avoiding empty firing.

[0026] In the embodiment of the utility model, the wheel housing 403 has a front housing 406 detachably fixedly connected to the gun frame 1 and a rear housing 407 detachably fixedly connected to the front housing 406. Since the wheel housing 403 has the front housing 406 detachably fixedly connected to the gun frame 1 and the rear housing 407 detachably fixedly connected to the front housing 406, it is convenient to disassemble the wheel housing 403 to load bullets, and it is convenient to assemble and disassemble the wheel housing 403 and the gun frame 1.

[0027] In the embodiment of the utility model, the rear shell 407 has a connecting portion (not shown in the figure) rotatably connected to the elastic wheel 401, and a reset spring 400 is sleeved on the connecting portion to reset the elastic wheel 401.

[0028] In the embodiment of the utility model, a compressed air component 5 and an energy storage component 6 are provided on the gun frame 1, and the compressed air component 5 is connected to the energy storage component 6. The energy storage component 6 includes a gas cylinder 601, a gas valve 602 arranged at one end of the gas cylinder 601, and a rubber-coated component 603 arranged at the connection between the gas valve 602 and the barrel 2, and a tail firing pin 7 is fixed on the rubber-coated component 603. The trigger assembly 3 includes a trigger frame (not shown in the figure) fixed to the gun frame 1, and a loading push rod 301, a trigger 303, a trigger buckle 304 and a hammer 305 arranged on the trigger frame. The trigger 3 03 is connected to the trigger button 304, the loading push rod 301 can move along the gun frame 1 and extend into the barrel 2 to fire the bullet, the loading push rod 301 is movably connected to the hammer 305 and controls the hammer 305 to reset and is mounted on the trigger button 304, and the hammer 305 is also connected to the hammer spring 308. When the compressed air component 5 presses air to the air valve 602, the rubber-coated component 603 seals the connection between the air valve 602 and the barrel 2. After the trigger component 3 is pulled, the hammer 305 presses on the tail firing pin 7, and the rubber-coated component 603 is separated from the connection between the air valve 602 and the barrel 2. Since the compressed air component 5 can pressurize air into the front part of the air valve 602 for storage multiple times, the front part of the air valve 602 is continuously pressurized. Therefore, when the trigger component 3 is pulled to hit the rubber-coated component 603 to release the gas, there is a large air pressure difference between the front part of the air valve 602 and the rear part of the air valve 602, so that the bullet has a good impact force and a good firing effect.

[0029] In the embodiment of the utility model, the trigger 303 and the trigger buckle 304 are both fixed on the trigger frame through a rotating shaft, the trigger 303 is fixedly connected to the trigger buckle 304, a hook groove (not marked in the figure) and a protrusion (not marked in the figure) are provided on the hammer 305, a first hook (not marked in the figure) matched with the hook groove is provided on the trigger buckle 304, and a second hook (not marked in the figure) matched with the protrusion is provided on the loading push rod 301. Among them, the protrusion drives the hammer 305 to move backward under the pressure of the loading push rod 301 pulling the loading chamber backward, and moves to the rear to make the hook groove hook with the first hook of the trigger buckle 304, so that the rubber-coated component 603 is reset.

[0030] In the embodiment of the utility model, the trigger assembly 3 also includes a loading safety device 8 and a trigger safety device 9, the loading safety device 8 includes a rear stop pin 801 arranged on the trigger frame and capable of sliding relative to the trigger frame, the bottom of the rear stop pin 801 presses on the top of the trigger 303 and limits the rotation of the trigger 303, and the loading push rod 301 is arranged above the rear stop pin 801. When the bullet is not loaded, the trigger 303 is locked by the rear stop pin 801, effectively preventing the bullet from not being loaded and the loading push rod 301 from releasing gas in this state, causing harm to the operator, and only when the loading push rod 301 moves forward, seals the bullet inlet, and at the same time gives up the space above the rear stop pin 801, can the firing be realized. The trigger safety device 9 includes a trigger safety 901 arranged on the trigger frame and capable of moving relative to the trigger frame, and a hook (not shown in the figure) matching the trigger safety 901 is arranged on the trigger 303. The above arrangement realizes the function of limiting or allowing the rotation of the trigger 303 by cooperating with the hook when the trigger safety 901 rotates left and right.

[0031] In the embodiment of the utility model, the trigger safety device 9 further includes a safety sheath (not shown in the figure), and the compressed air assembly 5 is provided with a protrusion (not shown in the figure), and the protrusion cooperates with the safety sheath.

[0032] In the embodiment of the utility model, the compressed air assembly 5 includes a piston 502 arranged in the air cylinder 601, and a piston bowl 503 and a connecting rod 504 respectively connected to both sides of the piston 502, a pressure rod 10 is also connected to the connecting rod 504, an air valve 602 is arranged on the air cylinder 601 and located on one side of the piston bowl 503, a check valve 11 is also arranged on the air valve 602, and a spring 12 in the air valve is connected to the check valve 11. The compressed air assembly 5 can drive the connecting rod 504 and the piston 502 to move forward and backward multiple times through the pressure rod 10, and then press the air into the front part of the air valve 602 for storage multiple times, so that the compressed gas stored in the air valve 602 provides power for the firing of the bullet when the air is deflated. In addition, for the convenience of operation, a hand grip hole can also be arranged on the pressure rod 10.

[0033] The following is a further detailed description of the use process of a compressed air energy storage air gun with a bullet wheel of the utility model in conjunction with the accompanying drawings:

[0034] As shown in the figure, since the trigger 303 and the trigger buckle 304 are fixed on the same central rotating shaft, when the loading push rod 301 is pulled backward to load the chamber, the hammer 305 is driven to move backward together, and the hammer 305 is separated from the rubber-coated component 603, so that the rubber-coated component 603 is sealed and connected to the air outlet at the rear of the air valve 602, that is, it is sealed at the connection between the rear of the air valve 602 and the barrel 2. At the same time, the trigger buckle 304 rotates upward under the action of the spring force, and is hooked on the arc-shaped boss position with the hammer 305 moving backward, that is, the hanging is realized, and at the same time, the loading push rod 301 moves backward, so that the rear limit pin 801 cannot be put on the stage, so that the trigger 303 cannot rotate, and the loading safety is realized.

[0035] The utility model is a compressed gas energy storage air gun with a spring wheel. Before firing, a compressed gas energy storage process must be performed. When the pressure rod 10 is pulled forward, the connecting rod 504 and the piston 502 move to the left in the air cylinder 601 under the driving action of the pressure rod 10. At this time, the external air enters the air cylinder 601 through the air inlet hole provided on the air cylinder 601. At this time, the one-way valve moves to the left under the action of the air pressure of the compressed gas, thereby forming an air inlet channel between the air cylinder 601 and the front part of the air valve 602. At this time, the compressed gas in the air cylinder 601 is sent into the front part of the air valve 602; when the piston 502 moves to the leftmost end, the piston bowl 503 is close to the front of the air valve 602, so that all the gas is pressed into the front of the air valve 602; when the pressure rod 10 is pulled back, the connecting rod 504 and the piston 502 move rightward in the air cylinder 601 under the action of the pull back, and the one-way valve 11 is in a closed state under the action of the gas pressure pressed into the front of the air valve 602, preventing the air in the front of the air valve 602 from flowing back into the air cylinder 601; when the pressure rod 10 is pulled forward again, the external air can enter the air cylinder 601 again through the air inlet hole on the air cylinder 601, and the gas is pressed into the front of the air valve 602 through the one-way valve 11 again under the action of the piston 502 for storage. In this way, the compressed gas stored between the front of the air valve 602 and the rear of the air valve 602 reaches the compressed gas energy required by the air gun, and then the bullet is fired.

[0036] As the loading push rod 301 moves forward into position and the bullet is loaded, the rear portion of the loading push rod 301 makes way for the upper portion of the rear limit pin 801, i.e., the loading push rod 301 safety is opened, so that the trigger 303 can move. When the trigger 303 is pulled to fire, the trigger 303 pulls the trigger buckle 304 with its central axis as the axis to make a circular motion, so that the hook of the trigger buckle 304 hung on the hammer 305 is disengaged. At this time, under the action of the elastic potential energy released by the reset of the hammer spring 308, the hammer 305 is prompted to impact the firing pin on the rubber-coated component 603 forward, thereby knocking up the rubber-coated component 603 to open the air release valve 602 door at the rear of the air valve 602, so that the connection between the rear portion of the air valve 602 and the air gun barrel 2 is unsealed and compressed gas is released to push the bullet to fire. After firing, the loading push rod 301 is pulled back to load the chamber, driving the hammer 305 to move backward, hooking the hook on the trigger buckle 304, and then pushing the loading push rod 301 forward to load the bullet, preparing for the next shooting.

[0037] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center of a circle", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of the utility model is not limited to these descriptions. Any method, structure, etc. similar to or identical to the method, structure, etc. of the utility model, or some technical deductions or replacements made on the premise of the concept of the utility model should be regarded as the protection of the utility model.

Claims

1. A compressed gas energy storage air gun with a bullet wheel, comprising a gun frame, a gun barrel and a trigger assembly arranged on the gun frame, wherein the trigger assembly has a loading push rod that can move along the gun frame and extend into the gun barrel to fire a bullet, characterized in that: The gun frame is provided with a catapult assembly beside one end of the gun barrel into which the loading push rod extends. The catapult assembly has a catapult. The catapult has a plurality of bullet storage holes spaced apart in its circumference. The bullet storage holes are used to store bullets. The catapult can rotate relative to the gun frame so that any of the bullet storage holes is connected to the gun barrel.

2. The compressed air energy storage air gun with a bullet wheel according to claim 1, characterized in that: The detonator assembly also has a wheel shell, the detonator is arranged in the wheel shell and is rotatably connected to the wheel shell, the wheel shell is respectively connected to the gun frame and the barrel so that the loading push rod can extend into the barrel through the wheel shell and the bullet storage hole, a plurality of the bullet storage holes are spaced apart in the circumferential direction of the detonator with the connection between the detonator and the wheel shell as the center, and the detonator can rotate with the connection between the detonator and the wheel shell as the axis so that any of the bullet storage holes is connected to the barrel.

3. The compressed air energy storage air gun with a spring wheel according to claim 2, characterized in that: The spring wheel has an outer stopper protruding from its outer annular wall, and the wheel shell has an inner stopper protruding from its inner annular wall and capable of cooperating with the outer stopper to limit the rotation of the spring wheel.

4. The compressed air energy storage air gun with a bullet wheel according to claim 2, characterized in that: The wheel housing comprises a front housing detachably fixedly connected to the gun rack and a rear housing detachably fixedly connected to the front housing.

5. The compressed air energy storage air gun with a spring wheel according to claim 1, characterized in that: The gun frame is provided with a compressed air component and an energy storage component, the compressed air component is connected to the energy storage component, the energy storage component includes a gas cylinder, a gas valve arranged at one end of the gas cylinder, and a rubber-coated component arranged at the connection between the gas valve and the gun barrel, a tail firing pin is fixed on the rubber-coated component, the trigger assembly includes a trigger frame fixed on the gun frame, and a loading push rod, a trigger, a trigger buckle and a hammer arranged on the trigger frame, the trigger is connected to the trigger buckle, the loading push rod can move along the gun frame, the loading push rod is movably connected to the hammer, and controls the hammer to be reset and is mounted on the trigger buckle, and a hammer spring is also connected to the hammer; when the compressed air component compresses air to the gas valve, the rubber-coated component seals the connection between the gas valve and the gun barrel, and after the trigger assembly is pulled, the hammer presses on the tail firing pin, and the rubber-coated component is separated from the connection between the gas valve and the gun barrel.

6. The compressed air energy storage air gun with a spring wheel according to claim 5, characterized in that: The trigger and the trigger buckle are both fixed to the trigger frame via a rotating shaft, the trigger is fixedly connected to the trigger buckle, a hook groove and a protrusion are provided on the hammer, a first hook matching with the hook groove is provided on the trigger buckle, and a second hook matching with the protrusion is provided on the loading push rod.

7. The compressed air energy storage air gun with a bullet wheel according to claim 5, characterized in that: The trigger assembly also includes a loading safety device and a trigger safety device. The loading safety device includes a rear limit pin arranged on the trigger frame and capable of sliding relative to the trigger frame, the bottom of the rear limit pin presses against the top of the trigger and limits the rotation of the trigger, the loading push rod is arranged above the rear limit pin, and the trigger safety device includes a trigger safety arranged on the trigger frame and capable of moving relative to the trigger frame, and the trigger is provided with a hook that cooperates with the trigger safety.

8. The compressed air energy storage air gun with a bullet wheel according to claim 7, characterized in that: The trigger safety device also includes a safety sheath, and the compressed air assembly is provided with a protrusion, which matches the safety sheath.

9. The compressed air energy storage air gun with a bullet wheel according to claim 5, characterized in that: The compressed air assembly includes a piston arranged in the air cylinder, and a piston bowl and a connecting rod respectively connected to both sides of the piston, the connecting rod is also transmission-connected with a pressure rod, the air valve is arranged on the air cylinder and located on one side of the piston bowl, the air valve is also provided with a one-way valve, and the one-way valve is connected to an air valve inner spring.

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