Aerodynamic device and pneumatic engine system assembly

Abstract

The invention discloses an air power device, which relates to the technical field of air power and comprises an air cylinder, and an air inlet and outlet structure is arranged on the air cylinder so as to drive a piston rod of the air cylinder to do linear reciprocating motion under the action of an external air source; the rack transmission mechanism comprises a transmission rack which is connected to a piston rod of the air cylinder. The driven mechanism comprises at least two driven gears with opposite rotating directions, and at least one driven gear is meshed with the transmission rack; the reversing mechanism comprises a plurality of overrun clutches correspondingly connected with the driven gears, and the locking directions of the multiple overrun clutches are the same; the output mechanism comprises a rotary output piece, and the multiple overrun clutches are all connected to the rotary output piece so that the rotary output piece can continuously output torque in the same steering direction within a complete linear reciprocating motion stroke of the transmission rack following the piston rod. The problems that a gear and rack transmission mechanism runs discontinuously, and an aerodynamic engine in the prior art is low in energy conversion efficiency can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerodynamics, and in particular to an aerodynamic device and a pneumatic engine system assembly. Background Art

[0002] As the world pays more and more attention to environmental protection, fossil fuel vehicles are facing increasing environmental pressure due to the emission of greenhouse gases and harmful pollutants. Although electric vehicles have attracted much attention due to their zero-emission characteristics, the large amount of resources consumed in the battery production process, the limited life span, and the environmental pollution caused by recycling and processing cannot be ignored. In this context, compressed air engines, as a clean automotive power system, show broad application prospects. Using air as the working medium, compressed air engines use abundant and recyclable air, which helps to significantly reduce carbon emissions and the production of harmful substances.

[0003] At present, the research on aerodynamic engines in the world generally applies a working principle similar to that of traditional internal combustion engines, that is, using compressed air to drive the piston in the engine cylinder, and converting the linear motion into rotational motion through the crank-connecting rod transmission to output torque. However, the crank-connecting rod transmission mechanism has a dead point problem during operation, which affects the transmission efficiency and stability. In order to solve this problem, the existing technology usually uses a multi-cylinder engine to make the mechanism pass the dead point smoothly, but it still has problems such as complex structure, high manufacturing cost, significant decrease in torque at high speed and low energy conversion efficiency in practical application. In addition, there is also a technology that introduces a flywheel and uses the inertia of the flywheel rotation to make the mechanism rush through the dead point position, but the introduction of the flywheel will increase the inertia of the system and reduce the response speed. There is still a problem of low transmission efficiency, and the overall quality and manufacturing cost are increased.

[0004] In addition, in view of the problem of low energy conversion efficiency of the above-mentioned air power engine, the prior art proposes a new type of air pressure engine and a gas power device based thereon. Although this air pressure engine has the characteristics of large torque and high power at high speed, its efficiency fluctuates significantly when it runs at low speed, affecting the stability of power output.

[0005] In order to improve the transmission efficiency, the inventors of the present application have considered a variety of transmission methods for converting linear motion into rotational motion, such as crank-connecting rod transmission, gear rack transmission, slider and eccentric wheel, slider and pulley, and screw-nut transmission, etc. Among them, the gear rack transmission mechanism is widely used in scenarios where rotational motion is converted into linear motion, such as elevators, laser cutting machines, etc., due to its simple structure and high transmission efficiency. However, in the application of aerodynamic engines, since the cylinder piston performs linear reciprocating motion, the gear rack transmission mechanism needs to convert the linear motion into rotational motion. This transmission method has the problem of discontinuous operation and is difficult to meet the demand for continuous power output.

[0006] In view of this, the inventor has made in-depth research and actively studied and improved the above process to develop and design the present invention in order to solve the many deficiencies and inconveniences caused by the imperfections in the above process. Summary of the invention

[0007] In order to solve the problems of the above-mentioned discontinuous gear rack transmission mode and the large efficiency fluctuation when the air compressor engine is running at low speed, the inventor has conducted in-depth research on the key issues in energy utilization efficiency and transmission mechanism. Through the special application of the overrunning clutch and the optimization of the power transmission scheme, an air power device that can achieve continuous and stable operation, simple structure, and high transmission efficiency, and an air engine system assembly including the device are proposed. The new structure and design significantly improve the stability and reliability of the power system, improve the energy conversion efficiency, and lay the foundation for the application of compressed air engines in a wider range of fields.

[0008] The present invention aims to overcome at least one defect of the prior art, provide an aerodynamic device with a novel structure, and make the aerodynamic device of the present invention have a simple structure, continuous power output and high transmission efficiency.

[0009] In order to achieve the above object, the solution of the present invention is:

[0010] In a first aspect, the present invention provides an aerodynamic device, comprising

[0011] A cylinder, wherein the cylinder is provided with an air inlet and an air outlet structure to drive the piston rod of the cylinder to perform linear reciprocating motion under the action of an external air source;

[0012] A rack transmission mechanism, the rack transmission mechanism comprising a transmission rack, the transmission rack being connected to the piston rod of the cylinder;

[0013] A driven mechanism, the driven mechanism comprising at least two driven gears with opposite rotation directions, and at least one of the driven gears is meshed with the transmission rack;

[0014] A reversing mechanism, the reversing mechanism comprising a plurality of overrunning clutches correspondingly connected to the driven gear, the locking directions of the plurality of overrunning clutches being the same;

[0015] The output mechanism includes a rotating output member, and the plurality of overrunning clutches are connected to the rotating output member, so that the rotating output member can continuously output torque in the same direction within a complete linear reciprocating motion stroke of the transmission rack following the piston rod. The aerodynamic device realizes the conversion of the energy of the air source into continuous rotating output torque, and can be used as a power conversion device in a variety of scenarios requiring continuous rotating power output.

[0016] Preferably, the transmission rack is provided with tooth surfaces on both sides, and the driven gear comprises a first driven gear and a second driven gear respectively meshed with the tooth surfaces on both sides of the transmission rack. With this arrangement, power can be transmitted more evenly, the stability and reliability of the transmission can be increased, and the force can be dispersed to a certain extent, the load of a single gear can be reduced, and the service life of the entire transmission system can be increased.

[0017] Preferably, a tooth surface is provided on one side of the transmission rack, and the driven gear comprises a first driven gear meshing with the tooth surface of the transmission rack, and a second driven gear meshing with the first driven gear. This arrangement forms a multi-stage transmission structure, which can also achieve the effect of continuous steering output torque.

[0018] Preferably, the plurality of overrunning clutches include a first overrunning clutch and a second overrunning clutch corresponding to the first driven gear and the second driven gear, the inner ring of the first overrunning clutch is coaxially connected to the first driven gear, and the inner ring of the second overrunning clutch is coaxially connected to the second driven gear. This connection method ensures that power can be accurately and efficiently transmitted from the driven gear to the overrunning clutch, thereby ensuring that the entire reversing mechanism can operate normally and realize effective control of the rotation output direction.

[0019] Preferably, the first overrunning clutch and the second overrunning clutch are meshed with the rotation output member through a gear structure, and the locking direction of the first overrunning clutch and the second overrunning clutch is opposite to the rotation direction of the rotation output member. This arrangement enables the locking and disengaging functions of the overrunning clutch to be accurately realized according to the rotation state of the rotation output member during the power transmission process, thereby ensuring the continuity and stability of the output torque.

[0020] Preferably, the rack transmission mechanism further comprises a support rod and a support seat, wherein the support rod is connected to the transmission rack, the support seat is arranged at the end of the transmission rack, a guide bearing seat is arranged in the support seat, a linear bearing is arranged in the guide bearing seat, and the support rod is connected to the support seat via the linear bearing. This arrangement can effectively support and guide the transmission rack, so that the transmission rack can maintain the accuracy and stability of linear motion during the movement, reduce the power transmission error caused by shaking, offset and other factors, and improve the accuracy and reliability of the entire transmission system.

[0021] Preferably, it also includes a support frame, and the transmission shafts of the driven mechanism, the reversing mechanism and the output mechanism are all rotatably connected to the support frame. This arrangement provides a stable installation and support platform, ensures the relative position accuracy of each mechanism during operation, reduces vibration and shaking, is conducive to the smooth operation of the entire aerodynamic device, and improves its working efficiency and service life.

[0022] Preferably, the transmission rack is provided with a movable groove, the transmission shaft sleeve of the rotary output member is provided with a bearing, and the bearing and the movable groove are in rolling cooperation. With this arrangement, the relative movement between the rotary output member and the transmission rack can be realized, and the transmission rack can be supported to a certain extent, while ensuring the continuity of power transmission, making the structure of the entire device more compact and the power transmission smoother.

[0023] Preferably, the air intake and air outlet structure of the cylinder includes a push-stroke air intake, a return-stroke air intake, a push-stroke exhaust port, and a return-stroke exhaust port, and the push-stroke air intake, return-stroke air intake, push-stroke exhaust port, and return-stroke exhaust port are all provided with solenoid valves for switching the air intake and exhaust directions of the cylinder. This setting can accurately switch the air intake and exhaust directions of the cylinder, thereby achieving precise control of the movement direction of the piston rod.

[0024] Preferably, at least two proximity switches are further included, which are arranged at both ends of the transmission rack in the direction of movement, and the proximity switches cooperate with the solenoid valve to control the direction of movement of the piston rod. This arrangement further improves the accuracy and timeliness of the control of the direction of movement of the piston rod, and ensures the stability and reliability of the operation of the entire device.

[0025] Preferably, the output mechanism further includes a transmission, the input end of which is connected to the output end of the rotating output member to adjust the output speed and torque. This arrangement enables the aerodynamic device to better match the requirements of different speeds and loads, broadens its application range, and improves the versatility and practicality of the device.

[0026] In a second aspect, the present invention provides a pneumatic engine system assembly, comprising:

[0027] Aerodynamic devices;

[0028] A pneumatic engine, wherein the air inlet of the pneumatic engine is connected to the exhaust port of the cylinder so that the gas exhausted from the cylinder drives the pneumatic engine to rotate;

[0029] An output switching mechanism comprises a third overrunning clutch and an output transmission assembly, wherein the inner ring of the third overrunning clutch is connected to the output end of the aerodynamic device, and the outer ring of the third overrunning clutch is connected to the output end of the pneumatic engine through the output transmission assembly for outputting rotational speed and torque to the outside.

[0030] The second aspect aims to provide a pneumatic engine system assembly with high energy conversion efficiency, high operating stability and high reliability.

[0031] Preferably, the rotation direction of the air pressure engine is the same as the rotation direction of the output end of the air power device;

[0032] When the speed of the output end of the air power device is higher than the speed of the output end of the air pressure engine, the inner ring and the outer ring of the third overrunning clutch are locked, and the air power device and the air pressure engine simultaneously output torque to the outside;

[0033] When the output end rotation speed of the aerodynamic device is lower than the output end rotation speed of the pneumatic engine, the inner ring and the outer ring of the third overrunning clutch are disengaged, and the pneumatic engine outputs torque to the outside.

[0034] Preferably, the output transmission assembly can be a belt transmission assembly, a chain transmission assembly, a synchronous belt transmission assembly and / or a gear set transmission assembly.

[0035] On the other hand, the present application provides an application of a pneumatic engine system assembly, and the application fields of the system assembly include vehicle power field, generator power field, energy production field, machinery and manufacturing field, aerospace field, ship and marine engineering field, agricultural machinery equipment field, construction machinery field, drilling machinery field, and amusement park machinery field.

[0036] After adopting the above scheme, when the air power device of the present invention is in operation, the compressed air in the cylinder drives the transmission rack to reciprocate, the first driven gear and the second driven gear meshed with the transmission rack rotate in opposite directions, and the inner rings of the first overrunning clutch and the second overrunning clutch rotate synchronously. Since the locking directions of the first overrunning clutch and the second overrunning clutch are the same, and the locking directions of the two are opposite to the rotation direction of the rotating output member, when the transmission rack performs a push stroke motion, one of the first overrunning clutch and the second overrunning clutch outputs torque to the rotating output member, and the other idles and does not output torque to the rotating output member; when the transmission rack performs a return stroke motion, the rotation direction of the first driven gear and the second driven gear is opposite to the rotation direction of the rack during the push stroke motion, and the other of the first overrunning clutch and the second overrunning clutch outputs torque to the rotating output member. In the reciprocating stroke of the transmission rack, one of the first overrunning clutch and the second overrunning clutch outputs torque to the rotating output member, and the rotation direction of the outer rings of the two overrunning clutches is always opposite to the rotation direction of the rotating output member. Therefore, during the reciprocating motion of the transmission rack, the rotating output parts can continuously output torque in the same direction, the transmission process is smooth and without jamming, and the transmission efficiency is high.

[0037] In addition, the pneumatic engine system assembly of the present application can reintroduce the compressed air after the air power device has completed work into the pneumatic engine, drive the pneumatic engine to rotate, and by connecting the pneumatic engine output shaft and the transmission output shaft in parallel, they work together to the outside, thereby improving gas utilization efficiency and overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a schematic diagram of the overall structure of the aerodynamic device of the present invention;

[0040] Figure 2 It is a structural schematic diagram of the cylinder and rack transmission mechanism of the present invention;

[0041] Figure 3 It is a partial explosion schematic diagram of the aerodynamic device of the present invention;

[0042] Figure 4 It is a partial exploded schematic diagram of the rack transmission mechanism, the driven mechanism, the reversing mechanism and the rotary output member of the present invention;

[0043] Figure 5 It is a partial exploded schematic diagram of the transmission of the present invention;

[0044] Figure 6 It is a structural schematic diagram of the pneumatic engine system assembly of the present invention;

[0045] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the middle A area;

[0046] Figure 8 It is a partial exploded schematic diagram of the output switching mechanism of the present invention;

[0047] Fig. 9 It is a schematic diagram of the overall structure of the pneumatic engine system assembly of the present invention applied to generator power.

[0048] Description of the accompanying drawings: 1. cylinder; 11. piston rod; 12. push stroke air inlet; 13. return stroke air inlet; 14. push stroke exhaust port; 15. return stroke exhaust port; 16. first solenoid valve; 17. second solenoid valve; 18. third solenoid valve; 19. fourth solenoid valve; 2. rack transmission mechanism; 21. transmission rack; 211. movable groove; 22. support rod; 23. support seat; 24. guide bearing seat; 3. driven mechanism; 31. first driven gear; 32. second driven gear; 4. reversing mechanism; 41 , first overrunning clutch; 411, first overrunning clutch outer ring; 412, first overrunning clutch inner ring; 42, second overrunning clutch; 421, second overrunning clutch outer ring; 422, second overrunning clutch inner ring 5, output mechanism; 51, rotating output member; 52, transmission; 6, support frame; 7, pneumatic engine; 8, output switching mechanism; 81, third overrunning clutch; 811, third overrunning clutch outer ring; 812, third overrunning clutch inner ring; 82, output transmission assembly; 9, generator. Specific embodiments

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] like Figures 1 to 5 As shown, an air power device includes a cylinder 1, a rack transmission mechanism 2, a driven mechanism 3, a reversing mechanism 4 and an output mechanism 5.

[0052] The cylinder 1 comprises a piston rod 11. When in use, the piston rod 11 of the cylinder 1 is driven by the compressed air introduced into the cylinder 1 to perform linear reciprocating motion.

[0053] The rack transmission mechanism 2 includes a transmission rack 21, a support rod 22 and a support seat 23. One end of the transmission rack 21 is connected to the piston rod 11 of the cylinder 1, and the support rod 22 is fixedly connected to the other end of the transmission rack 21. The support seat 23 is located at the end of the transmission rack 21 away from the cylinder 1. A guide bearing seat 24 is installed in the support seat 23, and a linear bearing is arranged in the guide bearing seat 24. The support rod 22 is penetrated and slidably connected to the guide bearing seat 24 through the linear bearing to support the transmission rack 21 and guide the linear movement of the transmission rack 21.

[0054] In other embodiments of the present application, two support seats 23 are provided and the two support seats 23 are respectively located at two ends of the transmission rack 21 to further improve the stability of the movement of the transmission rack 21.

[0055] Specifically, tooth surfaces are provided on both sides of the transmission rack 21, and the driven mechanism 3 includes a first driven gear 31 and a second driven gear 32. The first driven gear 31 and the second driven gear 32 are respectively located on the upper and lower sides of the transmission rack 21, and the two are respectively engaged with the tooth surfaces on both sides of the transmission rack 21. When the transmission rack 21 reciprocates, the rotation directions of the first driven gear 31 and the second driven gear 32 are opposite.

[0056] In other embodiments of the present application, the transmission rack 21 may also be provided with a tooth surface only on one side, the first driven gear 31 is meshed with the tooth surface of the transmission rack 21, and the second driven gear 32 is meshed with the first driven gear 31 to achieve opposite rotation directions of the first driven gear 31 and the second driven gear 32.

[0057] The reversing mechanism 4 includes a first overrunning clutch 41 and a second overrunning clutch 42. The first overrunning clutch inner ring 412 is coaxially connected to the first driven gear 31, and the second overrunning clutch inner ring 422 is coaxially connected to the second driven gear 32. The first overrunning clutch 41 and the second overrunning clutch 42 have the same locking direction.

[0058] It should be specifically explained that the same locking direction means that the first overrunning clutch 41 and the second overrunning clutch 42 have the same locking direction when working. For example, both can lock and transmit torque in the same direction (clockwise direction), and disconnect in the opposite direction (counterclockwise direction). Take the first overrunning clutch as an example: when locked, the first overrunning clutch inner ring 412 drives the first overrunning clutch outer ring 411 to rotate in the same direction. After disconnection, the first overrunning clutch inner ring 412 idles relative to the first overrunning clutch outer ring 411, that is, rotates in the opposite direction and does not transmit torque.

[0059] The output mechanism 5 includes a rotating output member 51 , and the first overrunning clutch 41 and the second overrunning clutch 42 are both connected to the rotating output member 51 , so that the rotating output member 51 can continuously output torque in the same direction within a complete reciprocating motion stroke of the transmission rack 21 .

[0060] In a specific embodiment of the present application, the rotary output member 51 is a gear structure, the first overrunning clutch outer ring 411 and the second overrunning clutch outer ring 421 are both designed with gear structures, and the first overrunning clutch outer ring 411 and the second overrunning clutch outer ring 421 are both engaged with the rotary output member 51, and the locking direction of the first overrunning clutch 41 and the second overrunning clutch 42 is opposite to the rotation direction of the rotary output member 51.

[0061] Although the above-mentioned embodiment adopts the setting scheme of a pair of driven gears and a pair of overrunning clutches, it should be recognized that other numbers of driven gears and corresponding numbers of overrunning clutches can be set according to different application scenarios, for example, two pairs of driven gears and corresponding two pairs of overrunning clutches. In addition, the rotating output member can also be set to multiple as needed, which can also achieve the technical effect of the present invention.

[0062] When the air power device is working, the cylinder 1 pushes the transmission rack 21 to reciprocate linear motion. In the movement of one push stroke of the transmission rack 21, the first driven gear 31 and the second driven gear 32 meshed with the transmission rack 21 rotate in two different rotation directions respectively. Since the locking directions of the first overrunning clutch 41 and the second overrunning clutch 42 are the same, and the locking directions of the two are opposite to the rotation direction of the rotation output member 51, at this time, only one of the first overrunning clutch 41 and the second overrunning clutch 42 is meshed with the driven gear to output torque to the rotation output member 51, and the other is disengaged from the driven gear and driven by the rotation output member 51 to rotate; when the transmission rack 21 is in a return stroke, the other of the first overrunning clutch 41 and the second overrunning clutch 42 is meshed with the driven gear to output torque to the rotation output member 51. Therefore, it can be ensured that in the reciprocating linear motion of the transmission rack 21, the first overrunning clutch 41 and the second overrunning clutch 42 can alternately output torque, and the rotation output member 51 can continuously output torque in the same direction, and the transmission process is smooth and free of jamming, and the transmission efficiency is high.

[0063] In other embodiments of the present application, the rotating output member 51 may also be a belt drive assembly, which is sleeved on the first overrunning clutch outer ring 411 and the second overrunning clutch outer ring 421 through a belt, and uses the cooperation of the belt and the pulley to continuously convert the linear motion of the transmission rack 21 into torque output.

[0064] In a preferred embodiment of the present application, the aerodynamic device further includes a support frame 6, and the transmission shafts of the driven mechanism 3, the reversing mechanism 4 and the output mechanism 5 are all rotatably connected to the support frame 6. Specifically, bearings are sleeved at both ends of the transmission shafts of the first driven gear 31, the second driven gear 32 and the rotary output member 51, and are rotatably connected to the support frame 6 through the bearings. In order to improve the stability of the operation of the transmission rack 21 and the stability of the overall structure, the transmission rack 21 is provided with a movable groove 211, which is a strip-shaped structure and extends along the length direction of the transmission rack 21. The transmission shaft of the rotary output member 51 extends in the direction of the transmission rack, and a bearing is sleeved on the extension portion. The bearing sleeved on the transmission shaft of the rotary output member 51 rolls with the inner wall of the movable groove 211 to withstand the radial force of the rotary output member 51 and the transmission rack 21.

[0065] Furthermore, the cylinder 1 is provided with a push stroke air inlet 12, a return stroke air inlet 13, a push stroke exhaust port 14, and a return stroke exhaust port 15. A first solenoid valve 16 is provided at the push stroke air inlet, a second solenoid valve 17 is provided at the return stroke air inlet, a third solenoid valve 18 is provided at the push stroke exhaust port, and a fourth solenoid valve 19 is provided at the return stroke exhaust port, which are used to switch the air intake and exhaust directions of the cylinder. The aerodynamic device also includes at least two proximity switches, which are respectively arranged at both ends of the movement direction of the transmission rack 21, and the proximity switches cooperate with the solenoid valves to control the movement direction of the cylinder piston rod.

[0066] Specifically, the push-stroke air inlet 12 and the return-stroke exhaust port 15 are arranged on one side of the piston, and the return-stroke air inlet 13 and the push-stroke exhaust port 14 are arranged on the other side of the piston. When the proximity switch arranged near one end of the cylinder 1 detects a signal, the cylinder starts to perform a push-stroke motion, the push-stroke air inlet and the push-stroke exhaust port are opened, and the return-stroke air inlet and the return-stroke exhaust port are closed; when the proximity switch arranged near one end of the support seat 23 detects a signal, the cylinder starts to perform a return motion, the return-stroke air inlet and the return-stroke exhaust port are opened, and the push-stroke air inlet and the push-stroke exhaust port are closed.

[0067] In other embodiments of the present application, the number of cylinders may be two and the two cylinders are respectively arranged at the two ends of the transmission rack 21, and the piston rods of the two cylinders are respectively fixedly connected to the two ends of the transmission rack 21. When in use, the two cylinders act on the transmission rack 21 together. Specifically, when one of the cylinders is in the push state, the other cylinder is in the return state to push the transmission rack 21 to perform linear reciprocating motion.

[0068] In another embodiment, two cylinders are simultaneously arranged at one end of the transmission rack 21, and the piston rods of the two cylinders are connected in parallel and simultaneously push the transmission rack 21 to perform linear reciprocating motion. It should be noted that the number of cylinders is not limited to two, and can also be set to more than two, and can be specifically arranged to be distributed on the same side or both sides of the transmission rack 21 as in the above embodiment according to different needs.

[0069] Reference Figure 5 In a preferred embodiment of the present application, the output mechanism 5 also includes a transmission 52, the input end of the transmission 52 is fixedly connected to the output end of the rotating output member 51 through a coupling, the rotating output member 51 can transmit the torque and speed to the transmission 52, and the output speed and torque can be adjusted through the transmission 52.

[0070] In other embodiments of the present application, the transmission ratios of the first overrunning clutch 41 , the second overrunning clutch 42 and the rotary output member 51 may be matched and designed to achieve the speed and torque required for direct output.

[0071] Another preferred embodiment of the present application provides a pneumatic engine system assembly, such as Figures 6 to 8 As shown, it includes an air power device, a pneumatic engine 7 and an output switching mechanism 8. The air inlet of the pneumatic engine 7 is connected with the push exhaust port and the return exhaust port of the cylinder 1. When the piston rod of the cylinder 1 reciprocates, the gas discharged from the cylinder body of the cylinder 1 can continue to drive the pneumatic engine 7 to rotate, further improving the energy conversion efficiency and utilization efficiency of the compressed air.

[0072] The output switching mechanism 8 includes a third overrunning clutch 81 and an output transmission assembly 82. The third overrunning clutch inner ring 812 is connected to the output end of the transmission 52. The third overrunning clutch outer ring 811 is connected to the output end of the pneumatic engine 7 through the output transmission assembly 82 for outputting rotational speed and torque to the outside.

[0073] Specifically, the rotation direction of the air compressor 7 is the same as the rotation direction of the output end of the transmission 52, and the rotation direction of the air compressor 7 is the same as the meshing direction of the third overrunning clutch 81. When the output end speed of the transmission 52 is higher than the output end speed of the air compressor 7, the inner ring 812 and the outer ring 811 of the third overrunning clutch are locked, and the output end of the transmission 52 and the output end of the air compressor 7 jointly output torque; when the output end speed of the transmission 52 is lower than the output end speed of the air compressor 7, the inner ring 812 of the third overrunning clutch is disengaged from the outer ring 811, and the output end of the transmission does not participate in the work of outputting torque to the outside, and the output end of the air compressor 7 outputs torque to the outside.

[0074] It should be specifically explained that when the rotation speed of the inner ring 812 of the third overrunning clutch is not less than the rotation speed of the outer ring 811, for example, the inner ring 812 rotates clockwise relative to the outer ring 811, and the two are locked and kept in linkage; and when the rotation speed of the inner ring 812 is less than the outer ring 811, at this time, the inner ring 812 rotates counterclockwise relative to the outer ring 811, and the two are disengaged. At this time, since the output end of the transmission is connected to the inner ring 812 of the third overrunning clutch, it is equivalent to the air power device being disconnected from the pneumatic engine 7, and the output end of the pneumatic engine 7 is linked with the outer ring 811 of the third overrunning clutch to output torque to the outside.

[0075] Specifically, the output transmission assembly 82 is a belt transmission assembly, and the two ends of the belt of the output transmission assembly 82 are respectively sleeved on the third overrunning clutch outer ring 811 and the output end of the pneumatic engine 7.

[0076] In other embodiments of the present application, the output transmission assembly 82 may also adopt a belt transmission assembly, a chain transmission assembly, a synchronous belt transmission assembly and / or a gear set transmission assembly. It is only necessary to connect the third overrunning clutch outer ring 811 and the output end of the pneumatic engine 7. Multiple components or a single component can be used.

[0077] In another preferred embodiment of the present application, an application of a pneumatic engine system assembly is provided, and the application fields of the system assembly include vehicle power field, generator power field, energy production field, machinery and manufacturing field, aerospace field, ship and marine engineering field, agricultural machinery and equipment field, engineering machinery field, drilling machinery field, and amusement park machinery field. Vehicle power field, such as applied to vehicles such as automobiles, bicycles, and sightseeing vehicles; energy production field, such as applied to generator sets, oil and gas extraction equipment, and renewable energy auxiliary power supply; machinery and manufacturing field, such as providing power for machine tools, conveyor belts, automation equipment, and robots; aerospace field, such as applied to passenger aircraft, helicopters, and drones; agricultural machinery field, such as applied to tractors and combine harvesters; engineering machinery field, such as providing power for excavators, loaders, bulldozers, cranes, and concrete mixers; drilling machinery field, such as providing power for drilling rigs and small drilling tools; amusement park machinery field, such as applied to roller coasters, carousels, etc.

[0078] In a specific embodiment of the present application, Fig. 9 As shown, the specific design parameters related to the pneumatic engine system assembly are provided. Taking the application of the pneumatic engine system assembly in the field of generator power as an example, the outer ring 811 of the third overrunning clutch is connected to the input end of the generator through a pulley drive.

[0079] Specifically, the cylinder 1 pushes the transmission rack 21 driven by the compressed air, and the transmission rack 21 further drives the first driven gear 31 and the second driven gear 32 to rotate, and the compressed air discharged from the cylinder 1 performs secondary work to drive the pneumatic engine 7 to rotate, thereby driving the output end of the pneumatic engine to rotate, thereby improving the efficiency of the pneumatic engine system assembly. The output end of the pneumatic engine is connected to the third overrunning clutch outer ring 811 through the output transmission assembly 82, and the third overrunning clutch outer ring 811 is connected to the input end of the generator 9 through a pulley, driving the generator 9 to operate, thereby generating electrical energy.

[0080] In a specific embodiment of the present application, the specific parameters of each component and its operation mode and torque calculation method are as follows:

[0081] 1. Specific parameters of each component and its operation method

[0082] (1) Cylinder

[0083] The cylinder is cylindrical, with a diameter of Φ300mm, a stroke of 250mm, and a working pressure of compressed air of 0.4MPa. Driven by compressed air, the cylinder exerts thrust on the transmission rack, pushing the transmission rack to reciprocate.

[0084] (2) Rack transmission mechanism, driven mechanism, reversing mechanism and output mechanism

[0085] The rack transmission mechanism includes a transmission rack with a module M=4; the driven mechanism, the reversing mechanism and the rotating output member include a first driven gear with a module M=4 and a number of teeth Z=38, a second driven gear, a first overrunning clutch outer ring, a second overrunning clutch outer ring and a rotating output member, and the gear pitch circle diameter is d=152mm. The transmission rack is connected to the piston rod of the cylinder. Under the reciprocating motion of the cylinder piston, the piston rod pushes the transmission rack to perform a corresponding linear reciprocating motion, driving the first driven gear and the second driven gear to rotate.

[0086] (3) Transmission

[0087] A transmission with a speed ratio of 1:50 is selected, so that the rotating output member rotates to drive the third overrunning clutch at the output end of the transmission to output to the generator at high speed. The transmission effectively adjusts the speed of the rotating output member to meet the speed requirements of the generator.

[0088] (4) Pneumatic engine

[0089] The compressed air discharged from the cylinder enters the air compressor to do work again. The design parameters of the air compressor are: the number of air passages N 气道 =7, airway radius r 气道 =5mm, airway ejection pressure P 气压 =0.4MPa, diameter D of the contact point between the ejected gas and the outer ring 接触=320mm, the experimental measurement shows that the jet coefficient of the gas pressure engine ε=1.6, the mass of the outer ring rotating body of the gas pressure engine m=20kg, and the outer ring radius R'=0.175m.

[0090] (5) Generator

[0091] In this embodiment, when the operating speed range of the generator is 1500-1800r / min, the generator can output stable electric energy.

[0092] 2. System parameters and torque calculation

[0093] (1) Calculation of cylinder torque on gear

[0094] The cylinder pushes the transmission rack, which drives the driven gear to rotate, generating a torque M 齿轮 , calculated by the following formula:

[0095]

[0096] Substituting the parameters into the result:

[0097]

[0098] (2) Gear speed and transmission output

[0099] The round trip stroke of the transmission rack is L = 500mm, and the circumference of one rotation of the gear is:

[0100] C=π×d=3.14×152=477.28mm

[0101] The cylinder reciprocating speed is 30 times / minute, and the gear speed is calculated as follows:

[0102]

[0103] Through the 1:50 transmission, the output speed is increased to:

[0104] n 输出 =31.428×50=1571.4r / min

[0105] Meet the requirements of the generator's stable power generation speed range (1500-1800r / min).

[0106] (3) Transmission output torque

[0107] Transmission output torque M 变速器 for:

[0108]

[0109] (4) Torque of pneumatic engine

[0110] Gas engine output torque M 气压 for:

[0111]

[0112] Substituting the parameters into the result:

[0113] M 气压 =3.14×5 2 ×4×1.6×7×0.16×10 -1 =56.269N·m

[0114] (5) Moment of inertia of gas engine

[0115] The moment of inertia M' of the gas engine is:

[0116]

[0117] (6) System total torque and output power

[0118] Total system torque M 总 for:

[0119] M 总 =M′+M 气压 +M 变速器 =100.74+56.269+42.955=199.96N·n

[0120] The output power P of the system is calculated as follows:

[0121]

[0122] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An aerodynamic device, characterized in that: include A cylinder, wherein the cylinder is provided with an air inlet and an air outlet structure to drive the piston rod of the cylinder to perform linear reciprocating motion under the action of an external air source; A rack transmission mechanism, the rack transmission mechanism comprising a transmission rack, the transmission rack being connected to the piston rod of the cylinder; A driven mechanism, the driven mechanism comprising at least two driven gears with opposite rotation directions, and at least one of the driven gears is meshed with the transmission rack; A reversing mechanism, the reversing mechanism comprising a plurality of overrunning clutches correspondingly connected to the driven gear, the locking directions of the plurality of overrunning clutches being the same; The output mechanism comprises a rotating output member, and the plurality of overrunning clutches are all connected to the rotating output member, so that the rotating output member can continuously output torque in the same direction within a complete linear reciprocating motion stroke of the transmission rack following the piston rod.

2. The aerodynamic device according to claim 1, characterized in that: Tooth surfaces are arranged on both sides of the transmission rack, and the driven gear comprises a first driven gear and a second driven gear respectively meshed with the tooth surfaces on both sides of the transmission rack.

3. The aerodynamic device according to claim 2, characterized in that: The plurality of overrunning clutches include a first overrunning clutch and a second overrunning clutch corresponding to the first driven gear and the second driven gear, the inner ring of the first overrunning clutch is coaxially connected to the first driven gear, and the inner ring of the second overrunning clutch is coaxially connected to the second driven gear.

4. The aerodynamic device according to claim 3, characterized in that: The first overrunning clutch and the second overrunning clutch are meshed with the rotation output member through a gear structure, and the locking direction of the first overrunning clutch and the second overrunning clutch is opposite to the rotation direction of the rotation output member.

5. The aerodynamic device according to claim 1, characterized in that: The rack transmission mechanism also includes a support rod and a support seat, the support rod is connected to the transmission rack, the support seat is arranged at the end of the transmission rack, a guide bearing seat is arranged in the support seat, a linear bearing is arranged in the guide bearing seat, and the support rod is connected to the support seat through the linear bearing.

6. The aerodynamic device according to claim 1, characterized in that: It also includes a support frame, and the transmission shafts of the driven mechanism, the reversing mechanism and the output mechanism are all rotatably connected to the support frame.

7. The aerodynamic device according to claim 1, characterized in that: The transmission rack is provided with a movable groove, and the transmission shaft sleeve of the rotary output member is provided with a bearing, and the bearing and the movable groove are in rolling cooperation.

8. The aerodynamic device according to claim 1, characterized in that: The air intake and exhaust structure of the cylinder includes a push-stroke air intake port, a return-stroke air intake port, a push-stroke exhaust port, and a return-stroke exhaust port. The push-stroke air intake port, the return-stroke air intake port, the push-stroke exhaust port, and the return-stroke exhaust port are all provided with solenoid valves for switching the air intake and exhaust directions of the cylinder.

9. The aerodynamic device according to claim 8, characterized in that: It also includes at least two proximity switches, which are arranged at both ends of the movement direction of the transmission rack, and the proximity switches cooperate with the solenoid valve to control the movement direction of the piston rod.

10. The aerodynamic device according to claim 1, characterized in that: The output mechanism further includes a transmission, the input end of which is connected to the output end of the rotating output member for adjusting the output speed and torque.

11. A pneumatic engine system assembly, characterized in that: include An aerodynamic device as claimed in any one of claims 1 to 10; A pneumatic engine, wherein the air inlet of the pneumatic engine is connected to the exhaust port of the cylinder so that the gas exhausted from the cylinder drives the pneumatic engine to rotate; An output switching mechanism comprises a third overrunning clutch and an output transmission assembly, wherein the inner ring of the third overrunning clutch is connected to the output end of the aerodynamic device, and the outer ring of the third overrunning clutch is connected to the output end of the pneumatic engine through the output transmission assembly for outputting rotational speed and torque to the outside.

12. The pneumatic engine system assembly according to claim 11, characterized in that: The rotation direction of the air pressure engine is the same as the rotation direction of the output end of the air power device; When the speed of the output end of the air power device is higher than the speed of the output end of the air pressure engine, the inner ring and the outer ring of the third overrunning clutch are locked, and the air power device and the air pressure engine simultaneously output torque to the outside; When the output end rotation speed of the aerodynamic device is lower than the output end rotation speed of the pneumatic engine, the inner ring and the outer ring of the third overrunning clutch are disengaged, and the pneumatic engine outputs torque to the outside.

13. The pneumatic engine system assembly according to any one of claims 11-12, characterized in that: The output transmission assembly includes a belt transmission assembly, a chain transmission assembly, a synchronous belt transmission assembly and / or a gear set transmission assembly.

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