Three-stroke multi-station dual-purpose air energy engine

Abstract

The utility model relates to a three-stroke multi-station dual-purpose air energy engine with higher power. The three-stroke multi-station dual-purpose air energy engine comprises an engine body and an output shaft, and is characterized in that a first cylinder body hole, a second cylinder body hole and a third cylinder body hole are sequentially formed in the engine body in the axial direction; a first cylinder body is arranged in the first cylinder body hole, a second cylinder body is arranged in the second cylinder body hole, and a third cylinder body is arranged in the third cylinder body hole; a first piston is movably arranged in the first cylinder body and is in transmission connection with the output shaft through a first connecting rod, a second piston is movably arranged in the second cylinder body, and a third piston is movably arranged in the third cylinder body and is in transmission connection with the output shaft through a third connecting rod; the first cylinder body is provided with a first air inlet hole. According to the three-stroke multi-station dual-purpose air energy engine, the structure is improved, each station is provided with three pistons used for driving the output shaft to rotate, the lever principle is fully utilized to be maximized, and therefore the output power of the output shaft is remarkably improved.

Description

Technical Field

[0001] This utility model relates to a pneumatic motor, specifically a three-stroke, multi-station, dual-purpose air-powered engine. Background Technology

[0002] A pneumatic motor is a device that converts the pressure energy of compressed air into rotational mechanical energy. It is generally used as a rotational power source for more complex devices or machines. Pneumatic motors are classified by structure into: vane pneumatic motors and piston pneumatic motors. A piston pneumatic motor is a type of pneumatic motor that converts the linear motion of several pistons into rotary motion using a crankshaft or swashplate. The applicant previously applied for an invention patent entitled "A High-Pressure, High-Efficiency Piston Pneumatic Motor" (publication number CN118242146A). This high-pressure, high-efficiency piston pneumatic motor includes a body, an output shaft, and multiple piston-connecting rod mechanisms. The piston-connecting rod mechanisms can drive the output shaft to rotate via the crankshaft. Multiple cylinder bores are evenly spaced on the body, and a second cylinder is located within each cylinder bore. The piston-connecting rod mechanisms include piston and connecting rod assemblies, with the piston movably positioned within the second cylinder. The body has an inner bore, and an air distribution sleeve is installed within this inner bore. The output shaft is located within the air distribution sleeve, which has a first air exchange chamber, a second air exchange chamber, and multiple air distribution holes arranged axially along its surface. This type of high-pressure, high-efficiency piston pneumatic motor, through structural improvements, has a shorter intake path, allowing air pressure to act directly on the piston, thereby improving energy conversion efficiency and making it more suitable for high-pressure applications. However, since each cylinder of this pneumatic motor only has one piston to drive the output shaft, the output power and work efficiency are not maximized. It is particularly unsuitable for air compression applications; when connected to a motor, its compression efficiency is extremely low. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this utility model innovatively provides a more powerful three-stroke multi-station dual-purpose air-powered engine.

[0004] This three-stroke, multi-station, dual-purpose air-powered engine includes a body and an output shaft. Its features include: the body having a first cylinder bore, a second cylinder bore, and a third cylinder bore sequentially arranged along the axial direction; a first cylinder is housed in the first cylinder bore, a second cylinder in the second cylinder bore, and a third cylinder in the third cylinder bore; a first piston is movably housed in the first cylinder, and the first piston is connected to the output shaft via a first connecting rod; a second piston is movably housed in the second cylinder, and a third piston is movably housed in the third cylinder, and the third piston is connected to the output shaft via a third connecting rod; the third piston... A first intake port is provided on a cylinder block, leading to the lower part of a first piston. A third intake port is provided on a third cylinder block, also leading to the lower part of a third piston. The engine body has an inner bore, and a valve train is installed within this inner bore. The output shaft is located within the valve train. The valve train has a first scavenging chamber, a second scavenging chamber, and a valve train hole along its axial direction. The valve train hole is located between the first and second scavenging chambers. The valve train hole communicates with the first intake port through a first through-hole on the engine body, and also communicates with the upper part of a second cylinder block through a second through-hole on the engine body. The air distribution port communicates with the third air intake port through a third through hole on the machine body; the machine body is provided with a first swing arm seat and a second swing arm seat, a first swing arm is hinged to the first swing arm seat, one end of the first swing arm is drivenly connected to the first piston, and the other end of the first swing arm is drivenly connected to the second piston; a second swing arm is hinged to the second swing arm seat, one end of the second swing arm is drivenly connected to the third piston, and the other end of the second swing arm is drivenly connected to the second piston; the machine body is provided with a first vent hole and a second vent hole along the axial direction of the inner hole, and the first vent hole of the machine body is connected to the first air exchange of the air distribution sleeve. The air chambers are interconnected, and the second vent hole of the machine body is connected to the second air exchange chamber of the air distribution sleeve; one side of the outer wall of the output shaft has a first groove-shaped air exchange position, and the first groove-shaped air exchange position of the output shaft is connected to the first air exchange chamber of the air distribution sleeve; when the output shaft rotates, the first groove-shaped air exchange position of the output shaft can connect the first air exchange chamber of the air distribution sleeve to the air distribution hole; the other side of the outer wall of the output shaft has a second groove-shaped air exchange position, and the second groove-shaped air exchange position of the output shaft is connected to the second air exchange chamber of the air distribution sleeve; when the output shaft rotates, the second groove-shaped air exchange position of the output shaft can connect the second air exchange chamber of the air distribution sleeve to the air distribution hole.

[0005] The first piston is connected to the first slider, and a first guide rod is connected to the first cylinder. The first slider is slidably mounted on the first guide rod. The first slider is connected to the first swing arm via a first swing arm inner rod. One end of the first swing arm inner rod is hinged to the first slider. One end of the first swing arm has a first movable hole, and the other end of the first swing arm inner rod is located within the first movable hole of the first swing arm. The second piston is connected to the second slider, and a second guide rod is connected to the second cylinder. The second slider is slidably mounted on the second guide rod. The second slider is connected to the first swing arm via a second swing arm inner rod. One end of the second swing arm inner rod is hinged to the second slider. The other end of the first swing arm has a second movable hole, and the other end of the second swing arm inner rod is located within the second movable hole of the first swing arm.

[0006] The third piston is connected to the third slider, and a third guide rod is connected to the third cylinder. The third slider is slidably mounted on the third guide rod. The third slider is connected to the second swing arm via a third swing arm inner rod. One end of the third swing arm inner rod is hinged to the third slider. One end of the second swing arm has a third movable hole, and the other end of the third swing arm inner rod is located in the third movable hole of the second swing arm. The second slider is connected to the second swing arm via a fourth swing arm inner rod. One end of the fourth swing arm inner rod is hinged to the second slider, and the other end of the second swing arm has a fourth movable hole, and the other end of the fourth swing arm inner rod is located in the fourth movable hole of the second swing arm.

[0007] The first slider has a first guide groove, and the first guide rod is slidably disposed in the first guide groove; the second slider has a second guide groove, and the second guide rod is slidably disposed in the second guide groove; the third slider has a third guide groove, and the third guide rod is slidably disposed in the third guide groove.

[0008] The first piston, the second piston, and the third piston are all provided with annular sealing grooves, and engineering plastic rings are provided in the annular sealing grooves.

[0009] The annular sealing groove is provided with a fluororubber ring, and the engineering plastic ring is located outside the fluororubber ring.

[0010] An inlet check valve is connected to the first vent, and an outlet check valve is connected to the second vent.

[0011] According to the present invention, a three-stroke multi-station dual-purpose air-powered engine is provided. Through structural improvements, each station has three pistons for driving the output shaft to rotate, which also makes full use of the lever principle to maximize the output power of the output shaft. Attached Figure Description

[0012] Figure 1 This is the front view of the present invention;

[0013] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0014] Figure 3 for Figure 2 A partial sectional view;

[0015] Figure 4 This is an assembly diagram of the output shaft and the valve train;

[0016] Figure 5 This is the front view of the output axis;

[0017] Figure 6 This is a cross-sectional view of the valve train;

[0018] Figure 7 This is a schematic diagram of the first cylinder block and the first piston;

[0019] Figure 8 This is a schematic diagram of the second cylinder and the second piston;

[0020] Figure 9 This is a cross-sectional view of the second piston;

[0021] Figure 10 This is a bottom view of the first slider;

[0022] Figure 11 for Figure 10 A cross-sectional view along the BB direction;

[0023] Figure 12 for Figure 10 A cross-sectional view along the CC direction;

[0024] Figure 13 This is a schematic diagram of the first slider and the first guide rod;

[0025] Figure 14 This is a schematic diagram of the multi-purpose structure of this utility model;

[0026] Figure 15 This is a cross-sectional view of the second piston (another structure). Detailed Implementation

[0027] like Figure 1 and Figure 2 As shown, this three-stroke, multi-station, dual-purpose air-powered engine includes a body 2 and an output shaft 1. The body 2 has multiple stations arranged along its circumference. Figure 1 (There are 5 workstations in the room), such as Figure 2 and Figure 3As shown, each workstation on the machine body 2 is provided with a first cylinder bore 26, a second cylinder bore 25, and a third cylinder bore 27 sequentially along the axial direction; a first cylinder 50 is provided in the first cylinder bore 26, a second cylinder 40 is provided in the second cylinder bore 25, and a third cylinder 60 is provided in the third cylinder bore 27; a first piston 5 (e.g., ...) is movably installed in the first cylinder 50. Figure 7 As shown, the first piston 5 is connected to the output shaft 1 via the first connecting rod 55. A second piston 4 is movably mounted inside the second cylinder 40, and a third piston 6 is movably mounted inside the third cylinder 60. The third piston 6 is connected to the output shaft 1 via the third connecting rod 65. The reciprocating motion of the first piston 5 and the third piston 6 drives the output shaft 1 to rotate via the first connecting rod 55 and the third connecting rod 65 respectively, thereby achieving power output.

[0028] In order to drive the first piston 5 and the third piston 6 to perform piston movement, such as Figure 7 As shown, a first air intake port 53 is provided on the first cylinder block 50, and the first air intake port 53 leads to the lower part of the first piston 5, as shown. Figure 7 As shown, after the gas enters the first cylinder 50, it acts on the lower part of the first piston 5 and pushes the first piston 5 to move upward (the vertical direction here refers to...). Figure 7 (direction); similarly, such as Figure 3 As shown, a third air inlet 63 is provided on the third cylinder 60. The third air inlet 63 leads to the lower part of the third piston 6. After the gas enters the third cylinder 60, it will act on the lower part of the third piston 6 and push the third piston 6 to move upward.

[0029] In order to allow gas to enter the first cylinder 50, the second cylinder 40, and the third cylinder 60, such as Figure 2 As shown, the body 2 has a first vent 20 and a second vent 21 along the axial direction of the inner hole. Air pressure enters through the first vent 20 and exits through the second vent 21. The body 2 has an inner hole, and an air distribution sleeve 3 is installed in the inner hole of the body 2. Figure 6 As shown, the air distribution sleeve 3 is provided with a first air exchange chamber 31, a second air exchange chamber 32, and an air distribution hole 33 (one air distribution hole 33 for each workstation) along the axial direction. The air distribution hole 33 is located between the first air exchange chamber 31 and the second air exchange chamber 32. The first vent 20 of the machine body 2 communicates with the first air exchange chamber 31 of the air distribution sleeve 3, while the second vent 21 of the machine body 2 communicates with the second air exchange chamber 32 of the air distribution sleeve 3. Figure 4 As shown, the output shaft 1 is located inside the valve sleeve 3, as... Figure 5As shown, one side of the outer wall of the output shaft 1 has a first groove-shaped ventilation position 11, which communicates with the first ventilation chamber 31 of the air distribution sleeve 3. When the output shaft 1 rotates, the first groove-shaped ventilation position 11 of the output shaft 1 can connect the first ventilation chamber 31 of the air distribution sleeve 3 with the air distribution hole 33. The other side of the outer wall of the output shaft 1 has a second groove-shaped ventilation position 12, which communicates with the second ventilation chamber 32 of the air distribution sleeve 3. When the output shaft 1 rotates, the second groove-shaped ventilation position 12 of the output shaft 1 can connect the second ventilation chamber 32 of the air distribution sleeve 3 with the air distribution hole 33. Figure 3 As shown, the air distribution port 33 communicates with the first air intake port 53 through the first through hole 23 on the engine block 2, and the air distribution port 33 communicates with the upper part of the second cylinder block 40 through the second through hole 22 on the engine block 2 (as shown). Figure 8 As shown, gas acts on the second piston 4 from above, pushing the second piston 4 to move downwards. The air distribution port 33 communicates with the third air inlet port 63 through the third through hole 24 on the body 2.

[0030] During operation, air pressure enters through the first vent 20. When the first slotted vent 11 of the output shaft 1 connects the first vent chamber 31 of the valve sleeve 3 with the vent hole 33, air pressure enters the first vent chamber 31 of the valve sleeve 3, then the first slotted vent 11 of the output shaft 1, and then the vent hole 33. It then flows through the first through hole 23, the second through hole 22, and the third through hole 24, respectively, and enters the first cylinder block 50, the second cylinder block 40, and the third cylinder block 60. The air pressure entering the first cylinder 50 pushes the first piston 5 upward, the air pressure entering the third cylinder 60 pushes the third piston 6 upward, and the air pressure entering the second cylinder 40 pushes the second piston 4 downward. The movement of the first piston 5 and the third piston 6 drives the output shaft 1 to rotate and output. When the output shaft 1 rotates, allowing the second slotted venting position 12 of the output shaft 1 to connect the second venting chamber 32 of the distribution sleeve 3 with the venting hole 33, the air intake of the first venting hole 20 is cut off (e.g., ...). Figure 4 In the state of exhaust, the air pressure in the first cylinder 50, the second cylinder 40, and the third cylinder 60 returns along the original path, enters the second slotted air exchange position 12 of the output shaft 1 through the air distribution port 33, and then enters the second vent 21 of the engine body 2 through the second air exchange chamber 32 of the air distribution sleeve 3, thereby realizing exhaust; during the exhaust process, the first piston 5 and the third piston 6 move down to reset, and the second piston 4 moves up to reset; in this cycle, the first piston 5 and the third piston 6 drive the output shaft 1 to rotate and output.

[0031] In order to establish a transmission connection between the first piston 5, the second piston 4, and the third piston 6, such as Figure 3As shown, the machine body 2 is provided with a first swing arm seat 70 and a second swing arm seat 80. A first swing arm 7 is hinged to the first swing arm seat 70, one end of which is driven to the first piston 5, and the other end of which is driven to the second piston 4. A second swing arm 8 is hinged to the second swing arm seat 80, one end of which is driven to the third piston 6, and the other end of which is driven to the second piston 4. With this structure, when the second piston 4 moves downward, the first piston 5 and the third piston 6 move upward, and when the second piston 4 moves upward, the first piston 5 and the third piston 6 move downward. That is, the movement direction of the second piston 4 is always opposite to the movement direction of the first piston 5 and the third piston 6. Although the second piston 4 does not directly drive the output shaft 1 to rotate, the second piston 4 assists in driving the first piston 5 and the third piston 6 through the first swing arm 7 and the second swing arm 8, respectively. In this way, by utilizing the lever principle, the movement of the three pistons drives the output shaft 1 to rotate and output power, thereby greatly improving the output power.

[0032] like Figure 3 As shown, the first piston 5 is connected to the first slider 51 (as shown). Figures 10-11 (This is a schematic diagram of the structure of the first slider 51). The first cylinder 50 is connected to the first guide rod 54, as shown below. Figure 13 As shown, the first slider 51 is slidably mounted on the first guide rod 54. The first slider 51 is connected to the first swing arm 7 via the inner rod 52 of the first swing arm. One end of the inner rod 52 of the first swing arm is hinged to the first slider 51. One end of the first swing arm 7 has a first movable hole, and the other end of the inner rod 52 of the first swing arm is located in the first movable hole of the first swing arm 7. The second piston 4 is connected to the second slider 44. The second cylinder 40 is connected to the second guide rod 41. The second slider 44 is slidably mounted on the second guide rod 41. The second slider 44 is connected to the first swing arm 7 via the inner rod 42 of the second swing arm. One end of the inner rod 42 of the second swing arm is hinged to the second slider 44. The other end of the first swing arm 7 has a second movable hole, and the other end of the inner rod 42 of the second swing arm is located in the second movable hole of the first swing arm 7. With this structure, when the second piston 4 moves downward, the second slider 44 moves downward along the second guide rod 41, which in turn drives the first swing arm 7 to swing through the inner rod 42 of the second swing arm. The first swing arm 7 drives the first slider 51 to move upward along the first guide rod 52 through the inner rod 52 of the first swing arm, which in turn drives the first piston 5 to move upward, thereby establishing a transmission relationship between the second piston 4 and the first piston 5, and allowing the second piston 4 and the first piston 5 to move in opposite directions.

[0033] like Figure 2As shown, similarly, the third piston 6 is connected to the third slider 61, and the third cylinder 60 is connected to the third guide rod 64. The third slider 61 is slidably mounted on the third guide rod 64. The third slider 61 is connected to the second swing arm 8 via the inner rod 62 of the third swing arm. One end of the inner rod 62 of the third swing arm is hinged to the third slider 61. One end of the second swing arm 8 has a third movable hole, and the other end of the inner rod 62 of the third swing arm is located in the third movable hole of the second swing arm 8. The second slider 44 is connected to the second swing arm 8 via the inner rod 43 of the fourth swing arm. One end of the inner rod 43 of the fourth swing arm is hinged to the second slider 44. The other end of the second swing arm 8 has a fourth movable hole, and the other end of the inner rod 43 of the fourth swing arm is located in the fourth movable hole of the second swing arm 8. With this structure, when the second piston 4 moves downward, the second slider 44 moves downward along the second guide rod 41, which in turn drives the second swing arm 8 to swing through the inner rod 43 of the fourth swing arm. The second swing arm 8 drives the third slider 61 to move upward along the third guide rod 64 through the inner rod 62 of the third swing arm, which in turn drives the third piston 6 to move upward, thereby establishing a transmission relationship between the second piston 4 and the third piston 6, and allowing the second piston 4 and the third piston 6 to move in opposite directions.

[0034] like Figure 10 As shown, the first slider 51 has a first guide groove 510, as... Figure 13 As shown, the first guide rod 54 is slidably disposed within the first guide groove 510, so that the first slider 51 can move smoothly along the first guide rod 54; the second slider 44 has a second guide groove, and the second guide rod 41 is slidably disposed within the second guide groove, so that the second slider 44 can move smoothly along the second guide rod 41; the third slider 61 has a third guide groove, and the third guide rod 64 is slidably disposed within the third guide groove, so that the third slider 61 can move smoothly along the third guide rod 64.

[0035] To further reduce piston friction, such as Figure 8 As shown, the contact surfaces of the first piston 5, the second piston 4, and the third piston 6 are all provided with annular sealing grooves, and an engineering plastic ring 18 is provided inside the annular sealing grooves (the material of the engineering plastic ring 18 contains copper powder, has excellent wear resistance, a smooth and glossy outer surface, a low coefficient of friction, good wear resistance, and a high temperature resistance of not less than 300°C). Because the engineering plastic ring 18 is smoother and has lower noise, it can greatly reduce the coefficient of friction when in contact with the inner wall of the cylinder, thereby improving the durability of the piston.

[0036] In order to allow the engineering plastic ring 18 to act elastically against the inner wall of the cylinder or the second cylinder to improve sealing, such as... Figure 9 As shown, a fluororubber ring 19 (withstanding temperatures above 200 degrees Celsius) is provided inside the annular sealing groove, and an engineering plastic ring 18 is located outside the fluororubber ring 19. Because the fluororubber ring 19 is elastic, the engineering plastic ring 18 can act elastically on the inner wall of the cylinder, ensuring the sealing between the piston 31 and the inner wall of the cylinder.

[0037] To protect the transmission mechanism between pistons, a cylinder head 9 is installed on the machine body 2. The cylinder head 9 can protect the piston and the transmission mechanism between pistons. Machine lubricating oil is added into the cylinder head 9 to lubricate and cool the rocker arm, rocker arm inner rod, slider, etc.

[0038] The above principle refers to the air source being connected to the first vent 20 through an air pipe, such as... Figure 2 As shown, under the action of air pressure, three pistons are pushed to move simultaneously. The air after doing work is discharged from the second vent 21, which drives the output shaft 1 to rotate and output power, thus realizing an air-powered engine that uses air as its energy source.

[0039] like Figure 14 When the output shaft of the machine is connected to the motor, the motor drives the output shaft to rotate. An inlet check valve 200 is connected to the first vent 20 to ensure that only air is in and not out (i.e., air intake). An outlet check valve 210 is connected to the second vent 21 to ensure that only air is out and not in (i.e., air exhaust). The gas enters through the inlet check valve 200 and enters the cylinder, causing the three pistons of a set of workstations to act simultaneously to compress the gas in the cylinder. The compressed gas exits through the outlet check valve 210 and is then sent to the air storage tank for storage, thus realizing the function of air compression.

[0040] like Figure 2 As shown, this three-stroke multi-station dual-purpose air-powered engine is equipped with an output shaft, and the air inlet of the three-stroke multi-station dual-purpose air-powered engine is connected to the air outlet of the air tank. When the customer needs to use air as power, the compressed air in the air tank drives the output shaft to rotate, thus acting as a pneumatic motor. When the customer needs compressed air, the output shaft of the three-stroke multi-station dual-purpose air-powered engine is connected to a motor, and the motor drives the output shaft, thus compressing the air and storing it in the air tank.

[0041] like Figure 14 As shown, this three-stroke, multi-station, dual-purpose air-powered engine can also be equipped with two output shafts, one for connecting to a generator and the other for connecting to a motor. For example, during off-peak hours (when electricity is cheaper), the motor drives the output shaft to rotate, thus generating power. The resulting compressed air is stored in a tank through a one-way valve 210. During the day (when electricity is more expensive), the compressed air from the tank is used to drive the output shaft through the first vent 20, thereby powering the generator (this requires a clutch system, which is existing technology and will not be described in detail). The electricity generated can be connected to the power grid or an energy storage device. In this way, a reasonable energy utilization solution can be provided to customers.

[0042] Both the first swing arm 7 and the second swing arm 8 are provided with vent holes 71, which connect the movable hole to the outside. When the inner rod of the swing arm reciprocates within the movable hole of the swing arm, the generated gas is discharged through the vent holes.

[0043] like Figure 1 As shown, a first eccentric wheel 15 is connected to the output shaft 1, and a first connecting rod 55 is hinged to the first eccentric wheel 15. A second eccentric wheel 16 is also connected to the output shaft 1, and a first connecting rod 65 is hinged to the second eccentric wheel 16. A counterweight 17 is connected to the output shaft 1, and the center of gravity of the counterweight 17 is symmetrical with respect to the axis of the output shaft 1, as are the centers of gravity of the first eccentric wheel 15 and the second eccentric wheel 16. The counterweight 17 balances the eccentric weight of the two eccentric wheels, thus providing a balancing effect and making the operation more stable.

[0044] Finally, it's worth mentioning that pistons can be made using, for example... Figure 15 The structure shown (including a first piston, a second piston, and a third piston) is suitable for high-speed and high-pressure applications. An end cap 47 is bolted to the end of the piston. The outer end of the end cap 47 has a pressure surface 470, and the end of the piston has a step 46. The pressure surface 470 of the end cap 47 presses the engineering plastic ring 18 onto the step 46 of the piston, making the engineering plastic ring 18 more secure and preventing it from falling off.

Claims

1. A three-stroke, multi-station, dual-purpose air-powered engine, comprising an engine body (2) and an output shaft (1), characterized in that: The machine body (2) is provided with a first cylinder bore (26), a second cylinder bore (25), and a third cylinder bore (27) in sequence along the axial direction; a first cylinder (50) is provided in the first cylinder bore (26), a second cylinder (40) is provided in the second cylinder bore (25), and a third cylinder (60) is provided in the third cylinder bore (27); a first piston (5) is movably provided in the first cylinder (50), and the first piston (5) is connected to the output shaft (1) through a first connecting rod (55); a second piston (4) is movably provided in the second cylinder (40), and a third piston (6) is movably provided in the third cylinder (60), and the third piston (6) is connected to the output shaft (1) through a third connecting rod (65); the first cylinder ( The first air inlet (53) is provided on the third cylinder (60), which leads to the lower part of the first piston (5). The third air inlet (63) is provided on the third cylinder (60), which leads to the lower part of the third piston (6). The body (2) has an inner hole, and a valve sleeve (3) is installed in the inner hole of the body (2). The output shaft (1) is located in the valve sleeve (3). The valve sleeve (3) is provided with a first air exchange chamber (31), a second air exchange chamber (32) and a valve hole (33) along the axial direction. The valve hole (33) is located between the first air exchange chamber (31) and the second air exchange chamber (32). The valve hole (33) is connected to the first air inlet (53) through the first through hole (23) on the body (2). The valves are connected to each other. The valve (33) is connected to the top of the second cylinder (40) through the second through hole (22) on the body (2). The valve (33) is connected to the third intake hole (63) through the third through hole (24) on the body (2). The body (2) is provided with a first rocker arm seat (70) and a second rocker arm seat (80). A first rocker arm (7) is hinged on the first rocker arm seat (70). One end of the first rocker arm (7) is connected to the first piston (5) and the other end of the first rocker arm (7) is connected to the second piston (4). A second rocker arm (8) is hinged on the second rocker arm seat (80). One end of the second rocker arm (8) is connected to the third piston (6) and the other end of the second rocker arm (8) is connected to the third piston (6). The end is connected to the second piston (4) for transmission; the body (2) is provided with a first vent hole (20) and a second vent hole (21) along the inner hole axial direction. The first vent hole (20) of the body (2) is connected to the first air exchange chamber (31) of the air distribution sleeve (3), and the second vent hole (21) of the body (2) is connected to the second air exchange chamber (32) of the air distribution sleeve (3); the outer wall of the output shaft (1) has a first groove-shaped air exchange position (11), and the first groove-shaped air exchange position (11) of the output shaft (1) is connected to the first air exchange chamber (31) of the air distribution sleeve (3); when the output shaft (1) rotates, the first groove-shaped air exchange position (11) of the output shaft (1) can connect the first air exchange chamber (31) of the air distribution sleeve (3) with the air distribution hole (33);The output shaft (1) has a second groove-shaped ventilation position (12) on the other side of its outer wall. The second groove-shaped ventilation position (12) of the output shaft (1) is connected to the second ventilation chamber (32) of the air distribution sleeve (3). When the output shaft (1) rotates, the second groove-shaped ventilation position (12) of the output shaft (1) can connect the second ventilation chamber (32) of the air distribution sleeve (3) with the air distribution hole (33).

2. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 1, characterized in that: The first piston (5) is connected to the first slider (51), and the first cylinder (50) is connected to the first guide rod (54). The first slider (51) is slidably disposed on the first guide rod (54). The first slider (51) is connected to the first swing arm (7) through the inner rod (52) of the first swing arm. One end of the inner rod (52) of the first swing arm is hinged to the first slider (51). One end of the first swing arm (7) has a first movable hole, and the other end of the inner rod (52) of the first swing arm is located in the first movable hole of the first swing arm (7). The second piston (4) is connected to the second slider (44), and the second cylinder (40) is connected to the second guide rod (41). The second slider (44) is slidably mounted on the second guide rod (41). The second slider (44) is connected to the first swing arm (7) through the inner rod (42) of the second swing arm. One end of the inner rod (42) of the second swing arm is hinged to the second slider (44). The other end of the first swing arm (7) has a second movable hole. The other end of the inner rod (42) of the second swing arm is located in the second movable hole of the first swing arm (7).

3. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 2, characterized in that: The third piston (6) is connected to the third slider (61), and the third cylinder (60) is connected to the third guide rod (64). The third slider (61) is slidably disposed on the third guide rod (64). The third slider (61) is connected to the second swing arm (8) through the inner rod (62) of the third swing arm. One end of the inner rod (62) of the third swing arm is hinged to the third slider (61). One end of the second swing arm (8) has a third movable hole. The other end of the inner rod (62) of the third swing arm is located in the third movable hole of the second swing arm (8). The second slider (44) is connected to the second swing arm (8) through the inner rod (43) of the fourth swing arm. One end of the inner rod (43) of the fourth swing arm is hinged to the second slider (44). The other end of the second swing arm (8) has a fourth movable hole. The other end of the inner rod (43) of the fourth swing arm is located in the fourth movable hole of the second swing arm (8).

4. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 3, characterized in that: The first slider (51) has a first guide groove (510), and the first guide rod (54) is slidably disposed in the first guide groove (510); the second slider (44) has a second guide groove, and the second guide rod (41) is slidably disposed in the second guide groove; the third slider (61) has a third guide groove, and the third guide rod (64) is slidably disposed in the third guide groove.

5. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 1, characterized in that: The first piston (5), the second piston (4) and the third piston (6) are provided with annular sealing grooves, and engineering plastic rings (18) are provided in the annular sealing grooves.

6. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 4, characterized in that: The annular sealing groove is provided with a fluororubber ring (19), and the engineering plastic ring (18) is located outside the fluororubber ring (19).

7. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 1, characterized in that: An inlet check valve (200) is connected to the first vent (20), and an outlet check valve (210) is connected to the second vent (21).

8. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 3, characterized in that: Both the first swing arm (7) and the second swing arm (8) are provided with ventilation holes (71), which connect the movable hole to the outside.

9. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 1, characterized in that: The output shaft (1) is connected to a first eccentric wheel (15), and the first connecting rod (55) is hinged to the first eccentric wheel (15). The output shaft (1) is connected to a second eccentric wheel (16), and the first connecting rod (65) is hinged to the second eccentric wheel (16). The output shaft (1) is connected to a counterweight (17), and the center of gravity of the counterweight (17) is symmetrical with respect to the axis of the output shaft (1) along with the centers of gravity of the first eccentric wheel (15) and the second eccentric wheel (16).

10. The three-stroke, multi-station, dual-purpose air-powered engine according to claim 1, characterized in that: The ends of the first piston, the second piston, and the third piston are all bolted to end caps (47). The outer end of the end cap (47) has a pressure surface (470). The ends of the first piston, the second piston, and the third piston all have steps (46). The pressure surface (470) of the end cap (47) presses the engineering plastic ring (18) onto the step (46) of the piston.

Images