pneumatic power unit

Abstract

The pneumatic power device includes an annular gas storage vessel (1), a starting system, and an output system. A plurality of cylinders (2) are uniformly arranged around the inner wall of the annular gas storage vessel, and the cylinder body cavities of the cylinders are connected to the cavity of the annular gas storage vessel. The piston rods (3) of the cylinders are provided with racks (4). The starting system includes a power source, a drive unit (15), a speed reducer / torque increaser mechanism, and a cam (5). The power source is electrically connected to the drive unit, and the drive unit is power-transmittingly connected to the cam by the speed reducer / torque increaser mechanism. The piston rod ends of each cylinder abut against the cam. The output system includes a one-way transmission mechanism and an output shaft (10). The one-way gear (7) at the input end of the one-way transmission mechanism is meshed with the rack, and each rack is power-transmittingly connected to the output shaft by a one-way transmission mechanism. Only when the piston rods of the cylinders are extended does the rack and the output shaft rotate. The pneumatic power plant has little dependence on traditional fuels and effectively avoids dependence on thermal energy resources, reducing emissions, saving energy and being environmentally friendly, while at the same time solving the problems of energy crisis and air pollution.

Description

[Technical Field]

[0001] This application claims priority from a Chinese patent application filed with the China Patent Office on September 28, 2022, bearing application number 202211191091.2 and entitled "Pneumatic Power Device," the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of power equipment, and more particularly to pneumatic power equipment. [Background technology]

[0003] With the development of thermal energy resources, a large number of internal combustion engines and boilers emit large amounts of smoke and waste gases into the atmosphere every day. Over time, this will cause serious damage to the ecological environment and bring immeasurable losses to humans. This energy is becoming increasingly scarce, and without new alternative energy sources, human production and life will be paralyzed in a few decades. Therefore, in order to reduce dependence on thermal energy resources, it is necessary to develop new energy power devices. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of this, it is an object of the present invention to provide a pneumatically powered device that reduces the dependency on thermal energy resources and reduces environmental pollution. [Means for solving the problem]

[0005] To achieve the above objectives, the present invention provides the following technical solutions: 1. A pneumatically powered device, comprising: an annular gas storage container having a plurality of cylinders uniformly arranged along a circumferential direction on an inner peripheral wall, wherein a cylinder body cavity of each cylinder communicates with a cavity of the annular gas storage container, and a rack is provided on a piston rod of each cylinder, and the longitudinal direction of the rack is parallel to the axial direction of the piston rod of each cylinder; a starting system including a power source, a drive device, a deceleration and torque increasing mechanism, and a cam, wherein the power source is electrically connected to the drive device, the drive device is operatively connected to the cam by the deceleration and torque increasing mechanism, the cam is coaxially disposed in the annular gas storage vessel, and one end of a piston rod of each of the cylinders remote from a cylinder body of the cylinder abuts against the cam; an output system including a one-way transmission mechanism and an output shaft, wherein a one-way gear is provided at an input end of the one-way transmission mechanism, the one-way gear is meshed with the rack, each of the racks is transmission-connected to the output shaft by one of the one-way transmission mechanisms, and only when the piston rod of the cylinder is extended, the rack drives the one-way gear by the one-way transmission mechanism to rotate the output shaft.

[0006] Preferably, the speed reduction and torque increase mechanism comprises: a first gear set including a first drive gear and a first driven gear that are meshed together, the first drive gear being provided at an output end of the driving device, and the number of teeth of the first drive gear being smaller than the number of teeth of the first driven gear; a second gear set including a second drive gear and a second driven gear that are meshed together, the second drive gear being coaxially connected to the first driven gear, the second driven gear being coaxially connected to the cam, and the number of teeth of the second drive gear being smaller than the number of teeth of the second driven gear.

[0007] Preferably, the one-way transmission mechanism comprises: a unidirectional gear set including a unidirectional gear and a third driven gear connected to the same shaft, the unidirectional gear set being provided to correspond to each of the racks; a driven gear plate coaxially connected to the output shaft and meshed with the third driven gear of each of the one-way gear sets.

[0008] Preferably, the number of teeth of the driven gear plate is greater than the number of teeth of the third driven gear.

[0009] Preferably, a rotatable top wheel is provided at one end of the piston rod of the cylinder remote from the cylinder body of the cylinder, and the end of the piston rod of the cylinder remote from the cylinder body of the cylinder is abutted against the cam by the top wheel.

[0010] Preferably, the annular gas storage vessel is provided with a safety valve for releasing pressure when the air pressure within the annular gas storage vessel exceeds a rated value.

[0011] Preferably, a pressure sensing device for sensing pressure within the annular gas storage vessel; a pressure replenishment device connected to the power supply and having an output connected to the annular gas storage vessel; The controller further includes a controller having a signal input terminal connected to the pressure detection device and a signal output terminal connected to the pressure replenishment device, the controller controlling the pressure replenishment device to replenish pressure in the annular gas storage container based on the detection value of the pressure detection device.

[0012] Preferably, the power source is a storage battery, and the pneumatic power device further includes a generator and an electric power detection device, the generator is connected to the storage battery, the electric power detection device detects the electric power of the storage battery, the generator is connected to the output shaft by a clutch, the signal input terminal of the controller is connected to the electric power detection device, and the signal output terminal of the controller is connected to the clutch, and when the electric power detection device detects that the electric power of the storage battery is lower than a predetermined value, the controller controls the clutch to transmit and connect the generator to the output shaft so that the generator generates electricity for the storage battery.

[0013] Preferably, the drive device is an electric motor, the electric motor is connected to the power supply by a start switch, and the electric motor is provided with a speed governor.

[0014] Preferably, the controller is communicatively connected to the start switch, the pressure replenishment device and the clutch by a remote control. [Effects of the Invention]

[0015] As can be seen from the above technical solution, an embodiment of the present invention provides a pneumatic power device, which includes an annular gas storage container, a starting system and an output system, a plurality of cylinders are uniformly arranged along the circumferential direction on the inner peripheral wall of the annular gas storage container, the cylinder body cavities of the cylinders are connected to the cavities of the annular gas storage container, the piston rods of the cylinders are provided with racks, the length direction of the racks is parallel to the axial direction of the piston rods of the cylinders, the starting system includes a power source, a driving device, a deceleration and torque increasing mechanism and a cam, the power source is electrically connected to the driving device, the driving device is a deceleration and torque increasing mechanism and a cam, The speed and torque increasing mechanism is connected to the cam, and the cam is arranged coaxially in the annular gas storage container. One end of the piston rod of each cylinder, which is remote from the cylinder body, is abutted against the cam. The output system includes a one-way transmission mechanism and an output shaft. The input end of the one-way transmission mechanism is provided with a one-way gear, which is meshed with a rack. Each rack is connected to the output shaft by a one-way transmission mechanism. Only when the piston rod of the cylinder is extended, the rack drives the one-way gear through the one-way transmission mechanism to rotate the output shaft. When applied, First, gas is filled into the annular gas storage container until the air pressure in the annular gas storage container reaches a predetermined value, and then the starting system drives the cam to rotate. As the cam rotates, the piston rod of each cylinder reciprocates in turn. When the convex part of the cam contacts the piston rod, the cam applies pressure to the cylinder to retract the cylinder rod. At this time, the rack is engaged with the one-way gear of the one-way transmission mechanism, but the rack makes the one-way gear rotate idly and does not transmit power. The cam continues to rotate until the concave part of the cam contacts and engages with the cylinder rod, and the annular gas storage container The air pressure inside the storage container causes the cylinder rods to extend, and the racks rotate the one-way gears to transmit power. When the cam rotates, the piston rods and racks of the multiple cylinders extend and reset in sequence. As the cam continues to rotate, each cylinder repeatedly converts the air pressure energy stored in the annular gas storage container into mechanical energy and outputs it to the outside. The output speed depends on the torque output from the driving device. As the piston rods of the multiple cylinders reciprocate, the multiple racks cyclically drive to rotate the corresponding one-way gears in sequence.Thus, in this application, the drive device of the starting system uses a deceleration and torque increase mechanism to drive the cam to rotate, increasing the torque output from the drive device of the starting system so that the drive device can drive the cam to rotate with a small torque. The output power of the pneumatic power unit can also be increased infinitely, for example, by increasing the pressure per unit area of ​​the annular gas storage container, increasing the area of ​​the cylinder piston, and increasing the number of cylinders. Furthermore, due to the structural design of the pneumatic power unit, the compressed air can be used repeatedly in an infinite loop system until the seal is damaged. This pneumatic power unit has little dependence on traditional fuel, mainly uses pressure difference to do work, effectively avoiding dependence on thermal energy resources, reducing emissions, saving energy and being environmentally friendly, while at the same time solving the problems of energy crisis and air pollution. [Brief explanation of the drawings]

[0016] In order to more clearly explain the technical solutions of the embodiments of the present invention or the prior art, the following briefly introduces the drawings necessary for the description of the embodiments or the prior art. The drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without exerting any effort that amounts to inventive step.

[0017] [Figure 1] 1 is a structural schematic diagram of an annular gas storage vessel of a pneumatic power device disclosed in an embodiment of the present invention; [Figure 2] 1 is a structural schematic diagram of an output system of a pneumatic power unit disclosed in an embodiment of the present invention; [Figure 3] 1 is a structural schematic diagram of a starting system of a pneumatic power device disclosed in an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention discloses a pneumatic power plant, which reduces the dependency on thermal energy resources and reduces environmental pollution.

[0019] The following clearly and completely describes the technical solutions of the embodiments of the present invention, combined with the drawings of the embodiments of the present invention, and the described embodiments are not all embodiments but only some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any inventive effort are within the scope of protection of the present invention.

[0020] As shown in Figures 1 to 3, Figure 1 is a structural schematic diagram of the annular gas storage vessel of the pneumatic powered device disclosed in the embodiment of the present invention, Figure 2 is a structural schematic diagram of the output system of the pneumatic powered device disclosed in the embodiment of the present invention, and Figure 3 is a structural schematic diagram of the starting system of the pneumatic powered device disclosed in the embodiment of the present invention.

[0021] According to the pneumatic power device disclosed in the embodiment of the present invention, the pneumatic power device includes an annular gas storage vessel 1, a starting system and a power system.

[0022] A plurality of cylinders 2 are uniformly arranged along the circumferential direction on the inner peripheral wall of the annular gas storage container 1, the cylinder body cavities of the cylinders 2 are connected to the cavity of the annular gas storage container 1, the axis of the cylinder body of the cylinders 2 is arranged along the radial direction of the annular gas storage container 1, and the piston rod 3 of the cylinders 2 is provided with a rack 4, which is connected to the piston rod 3 by a connecting part, and the longitudinal direction of the rack 4 is parallel to the axial direction of the piston rod 3 of the cylinders 2.

[0023] The starting system includes a power source, a drive device 15, a deceleration and torque increasing mechanism, and a cam 5. The power source may be a commercial power source or a battery. The power source is electrically connected to the drive device 15, and the drive device 15 is power-transmittingly connected to the cam 5 via the deceleration and torque increasing mechanism. The cam 5 is arranged coaxially in the annular gas storage vessel 1, and one end of the piston rod 3 of each cylinder 2, which is remote from the cylinder body of the cylinder 2, abuts against the cam 5.

[0024] The output system includes a one-way transmission mechanism and an output shaft 10. A one-way gear 7 is provided at the input end of the one-way transmission mechanism. The one-way gear 7 is meshed with the rack 4. Each rack 4 is connected to the output shaft 10 by one one-way transmission mechanism. Only when the piston rod 3 of the cylinder 2 is extended, the rack 4 drives the one-way gear 7 through the one-way transmission mechanism to rotate the output shaft 10.

[0025] In application, first fill the annular gas storage container 1 with gas until the air pressure inside the annular gas storage container 1 reaches a predetermined value, and then the starting system drives the cam 5 to rotate. As the cam 5 rotates, the piston rod 3 of each cylinder 2 moves back and forth in sequence. When the convex part of the cam 5 contacts the piston rod 3, the cam 5 applies pressure to the cylinder 2, causing the rod of the cylinder 2 to retract. At this time, the rack 4 is engaged with the one-way gear 7 of the one-way transmission mechanism, but the rack 4 makes the one-way gear 7 rotate idly and does not transmit power. The cam 5 continues to rotate until the concave part of the cam 5 contacts and engages with the rod of the cylinder 2, and the annular gas The air pressure inside the storage container 1 causes the rods of the cylinders 2 to extend, and the racks 4 rotate the one-way gears 7 to transmit power. When the cam 5 rotates, the piston rods 3 and racks 4 of the multiple cylinders 2 extend and reset in sequence. As the cam 5 continues to rotate, each cylinder 2 repeatedly converts the air pressure energy stored inside the annular gas storage container 1 into mechanical energy and outputs it to the outside. The output speed depends on the torque output from the drive unit 15. As the piston rods 3 of the multiple cylinders 2 reciprocate, the multiple racks 4 cyclically drive the corresponding one-way gears 7 to rotate in sequence, thereby outputting power.

[0026] Compared with the prior art, the embodiment of the present invention provides a pneumatic power unit in which the drive unit 15 of the starting system uses a deceleration and torque increase mechanism to drive the cam 5 to rotate, thereby increasing the torque output from the drive unit 15 of the starting system, and the drive unit 15 can drive the cam 5 to rotate with a small torque. The output power of the pneumatic power unit can also be increased infinitely, for example, by increasing the pressure per unit area of ​​the annular gas storage vessel 1, increasing the piston area of ​​the cylinder 2, and increasing the number of cylinders 2. Due to the structural design of the pneumatic power unit, the compressed air can be used repeatedly in an infinite loop system until the seal is damaged. This pneumatic power unit has little dependence on traditional fuel and mainly uses pressure difference for work. Air is an abundant renewable resource and can be used repeatedly as an energy storage medium, effectively avoiding dependence on thermal energy resources, reducing emissions, saving energy and being environmentally friendly, while at the same time solving the problems of energy crisis and air pollution.

[0027] Preferably, in an embodiment of the present invention, as shown in FIG. 3, the speed reduction and torque increasing mechanism includes a first gear set and a second gear set, the first gear set includes a first drive gear 14 and a first driven gear 13 that are meshed with each other, the first drive gear 14 is disposed at the output end of the driving device 15, and the number of teeth of the first drive gear 14 is less than that of the first driven gear 13, and the second gear set includes a second drive gear 12 and a second driven gear 11 that are meshed with each other, and the second drive gear 12 is disposed at the output end of the driving device 15, and the number of teeth of the first drive gear 14 is less than that of the first driven gear 13, and the second gear set includes a second drive gear 12 and a second driven gear 11 that are meshed with each other, and the second drive gear 12 is disposed at the output end of the driving device 15, and the number of teeth of the first drive gear 14 is less than that of the first driven gear 13, and the second gear set includes a second drive gear 12 and a second driven gear 11 that are meshed with each other, and the second drive gear 12 is disposed at the output end of the driving device 15, and the number of teeth of the first driven gear 13 is less than that of the second driven gear 13, and the second gear set ... The drive gear 12 is coaxially connected to the first driven gear 13, the second driven gear 11 is coaxially connected to the cam 5, the camshaft and the output shaft 10 are arranged concentrically, the camshaft and the output shaft 10 are each driven by a different power source, the cam 5 is connected to the second driven gear 11 by the camshaft, and its power comes from the power supply and drive device 15, while the power of the output shaft 10 comes from each of the cylinders 2, and the number of teeth of the second drive gear 12 is smaller than the number of teeth of the second driven gear 11.

[0028] Of course, the above-mentioned speed reduction and torque increase mechanism composed of gears is merely a preferred embodiment solution provided by the embodiment of the present invention, and a belt transmission mechanism, a sprocket transmission mechanism, etc. may also be used as the speed reduction and torque increase mechanism, and is not limited here.

[0029] Specifically, in this embodiment of the present invention, the one-way transmission mechanism includes a one-way gear set and a driven gear plate 9, and the one-way gear set has a one-way gear 7 and a third driven gear 8 that are coaxially connected, and the one-way gear sets are provided to correspond to the racks 4, respectively, and the driven gear plate 9 is coaxially connected to the output shaft 10 and meshes with the third driven gear 8 of each one-way gear set.

[0030] In order to optimize the above technical solution, the number of teeth of the driven gear plate 9 is made greater than the number of teeth of the third driven gear 8, so that deceleration and torque increase are also created between the driven gear plate 9 and the third driven gear 8.

[0031] Preferably, as shown in FIGS. 1 and 3, a rotatable top wheel 6 is provided at one end of the piston rod 3 of the cylinder 2 that is remote from the cylinder body of the cylinder 2, and the end of the piston rod 3 of the cylinder 2 that is remote from the cylinder body of the cylinder 2 is abutted against the cam 5 by the top wheel 6, thereby changing the relative movement between the piston rod 3 and the cam 6 from sliding to rolling, thereby reducing the frictional force between the piston rod 3 and the cam 5, reducing resistance and reducing frictional heat loss.

[0032] In an embodiment of the present invention, the annular gas storage vessel 1 is further provided with a safety valve, which releases pressure when the air pressure in the annular gas storage vessel 1 exceeds a rated value, thereby ensuring the safety of the equipment.

[0033] Preferably, the pneumatic power device further includes a pressure detection device, a pressure replenishment device and a controller, wherein the pressure detection device detects the pressure in the annular gas storage vessel 1, the pressure replenishment device is connected to a power source, the output end of the pressure replenishment device is connected to the annular gas storage vessel 1, the signal input end of the controller is connected to the pressure detection device, and the signal output end of the controller is connected to the pressure replenishment device, and the controller controls the pressure replenishment device to replenish pressure in the annular gas storage vessel 1 based on the detection value of the pressure detection device.

[0034] Furthermore, the power source is a storage battery 18, and the pneumatic power device further includes a generator and an electric energy detection device, the generator is connected to the storage battery 18, the electric energy detection device detects the electric energy of the storage battery 18, the generator is connected to the output shaft 10 by a clutch, the signal input terminal of the controller is connected to the electric energy detection device, and the signal output terminal of the controller is connected to the clutch, when the electric energy detection device detects that the electric energy of the storage battery 18 is lower than a predetermined value, the controller controls the clutch to transmit and connect the generator to the output shaft 10, so that the generator generates electricity for the storage battery 18, that is, the electric energy of the storage battery 18 comes from the pneumatic power device itself.

[0035] Preferably, the driving device 15 is an electric motor, which is connected to a power source by a start switch 17. When the start switch 17 is turned on, the electric motor starts to rotate and outputs torque, and when the start switch 17 is turned off, the electric motor stops rotating. The electric motor is provided with a speed governor 16, and a user or a controller can adjust the rotation speed of the electric motor through the speed governor 16 to adjust the output power according to needs.

[0036] In an embodiment of the present invention, the controller is communicatively connected to the start switch 17, the pressure replenisher and the clutch via a remote controller, so that a user or a controller can remotely control the start switch 17, the pressure replenisher and the clutch via the remote controller.

[0037] As mentioned above, the output power P of a pneumatic power plant satisfies the following formula: P(w) = work Kilogram force (kgf) output from the piston cylinder * number of revolutions when the output shaft is loaded ÷ 60s ÷ 75kg·m.

[0038] The above formula is a conclusion reached through practical verification using torque coefficient detection devices and equipment. The establishment of this formula is of great significance for the future manufacture, research and development of pneumatically powered equipment. Years of experimentation have shown that pneumatic power has elasticity, and the optimum peak of pneumatic expansion energy can only be achieved when the kilogram force output from the piston-cylinder is a multiple of the kilogram force when the output shaft is loaded. Therefore, the above formula can be obtained.

[0039] Specific examples of the present invention will be introduced below.

[0040] The diameter of cylinder 2 is 180 mm and the area of ​​the piston is 254 cm 2 The pressure per unit area used is 0.6 MPa. Eight cylinders 2 are concentrically and uniformly arranged around the circumference of each annular gas storage vessel 1. The piston rod 3 of each cylinder 2 is provided with a top foil 6 and a rack 4. The top foils 6 of the piston rods 3 of three of the cylinders 2 are always in rotatable contact with the cam 5, and the pressure that each top foil 6 exerts on the cam 5 is 254 cm. 2 *0.6MPa=1524kgf, and the pressure that the three top wheels 6 simultaneously apply to the cam 5 is 1524kgf*3=4572kgf. Due to the action of the drive unit 15 and the deceleration / torque increasing mechanism, the friction resistance of the rotation of the cam 5 is reduced by 85%, and the starting system can achieve the power output of the equipment by consuming only 15% of the force generated by the output system. In other words, using only 15kgf will reset the piston of cylinder 2, which has a pressure of 100kg, and 85% of the power of the equipment will be output to the outside.

[0041] Here, each embodiment in this specification will be described in a progressive manner, and each embodiment will mainly describe the differences from other embodiments, and similar or similar parts between each embodiment may be referred to each other.

[0042] The use of "system," "device," "unit," and / or "module" in this application is merely a way of distinguishing between different levels of assembly, element, component, part, or arrangement. However, other terms may be used in place of the terms if they serve the same purpose.

[0043] As shown in this application and the claims, unless the specification expressly states otherwise, terms such as "a," "one," "one kind," and / or "the" do not refer to the singular only but may also include the plural. In general, terms such as "comprise" and "including" merely indicate the inclusion of explicitly stated steps and elements, and these steps and elements do not constitute an exclusive list; a method or apparatus may further include other steps or elements. An element qualified by the phrase "comprises" does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0044] In the description of the examples of the present application, unless otherwise specified, " / " means "or", for example, A / B means A or B, and "and / or" in this specification is merely a relational relationship for explaining related objects and indicates the existence of three relations, for example, A and / or B indicates three situations: A exists individually, A and B exist simultaneously, and B exists individually. Also, in the description of the examples of the present application, "plurality" means two or more than two.

[0045] When a flowchart is used in this application, the flowchart is used to explain the operations performed by the system according to the embodiment of the application. Here, the previous or subsequent operations are not necessarily performed in exact order. Conversely, the operations may be performed in reverse order, or each step may be processed simultaneously. Also, other operations may be added to these steps, or one or more operations may be removed from these steps.

[0046] Furthermore, in this specification, the terms "comprises," "including," or any other variation thereof, are intended to include a non-exclusive inclusion, whereby an article or device comprising a set of elements not only includes those elements, but also includes other elements not expressly listed, or even includes the inherent elements of such article or device. Unless further limited, elements qualified by the phrase "comprises" do not exclude the presence of other identical elements in an article or device that includes said elements.

[0047] In this specification, the principle and embodiments of the present invention are described using specific examples, and the description of the above examples is only used to understand the gist of the present invention. Here, those skilled in the art may make some improvements and modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. [Explanation of symbols]

[0048] 1 ···Annular gas storage vessel; 2 ··· cylinder; 3 ··· piston rod; 4 ··· rack; 5 ···cam; 6 ···Top foil; 7. One-way gear; 8 ···Third driven gear; 9 ···Driven gear plate; 10 ··· output shaft; 11 ···Second driven gear; 12 ···Second drive gear; 13 ···First driven gear; 14 ···First drive gear; 15 ···Drive unit; 16...Governor; 17 ···Start switch; 18...storage battery.

Claims

1. 1. A pneumatically powered device, comprising: an annular gas storage container having a plurality of cylinders uniformly arranged along a circumferential direction on an inner peripheral wall, wherein a cylinder body cavity of each cylinder communicates with a cavity of the annular gas storage container, and a rack is provided on a piston rod of each cylinder, and the longitudinal direction of the rack is parallel to the axial direction of the piston rod of each cylinder; an actuation system including a power source, a drive device, a speed reduction and torque increasing mechanism, and a cam, wherein the power source is electrically connected to the drive device, the drive device is power-transmittingly connected to the cam by the speed reduction and torque increasing mechanism, the cam is coaxially disposed in the annular gas storage vessel, and one end of a piston rod of each of the cylinders remote from a cylinder body of the cylinder abuts against the cam; an output system including a one-way transmission mechanism and an output shaft, wherein an input end of the one-way transmission mechanism is provided with a one-way gear, the one-way gear is meshed with the rack, each of the racks is transmission-connected to the output shaft by one of the one-way transmission mechanisms, and only when a piston rod of the cylinder is extended, the rack drives the one-way gear through the one-way transmission mechanism to rotate the output shaft.

2. The deceleration / torque increasing mechanism includes: a first gear set including a first drive gear and a first driven gear that are meshed together, the first drive gear being provided at an output end of the driving device, and the number of teeth of the first drive gear being smaller than the number of teeth of the first driven gear; a second gear set including a second drive gear and a second driven gear that are meshed together, the second drive gear being coaxially connected to the first driven gear, the second driven gear being coaxially connected to the cam, and the second drive gear having fewer teeth than the second driven gear.

3. The one-way transmission mechanism includes: a unidirectional gear set including a unidirectional gear and a third driven gear connected to the same shaft, the unidirectional gear set being provided to correspond to each of the racks; 2. The pneumatic power device according to claim 1, further comprising: a driven gear plate coaxially connected to said output shaft and meshed with said third driven gear of each of said one-way gear sets.

4. 4. A pneumatic power unit according to claim 3, wherein the number of teeth of said driven gear plate is greater than the number of teeth of said third driven gear.

5. The pneumatic power unit according to any one of claims 1 to 4, characterized in that a rotatable top wheel is provided at one end of the piston rod of the cylinder that is remote from the cylinder body of the cylinder, and the one end of the piston rod of the cylinder that is remote from the cylinder body of the cylinder is abutted against the cam by the top wheel.

6. The pneumatic power device according to any one of claims 1 to 4, characterized in that the annular gas storage vessel is provided with a safety valve for releasing pressure when the air pressure in the annular gas storage vessel exceeds a rated value.

7. a pressure sensing device for sensing pressure within the annular gas storage vessel; a pressure replenishment device connected to the power supply and having an output connected to the annular gas storage vessel; The pneumatic power unit according to any one of claims 1 to 4, further comprising: a controller having a signal input terminal connected to the pressure detection device and a signal output terminal connected to the pressure replenishment device, the controller controlling the pressure replenishment device to replenish pressure in the annular gas storage vessel based on the detection value of the pressure detection device.

8. 8. The pneumatic power plant according to claim 7, wherein the power source is a storage battery, the pneumatic power plant further includes a generator and an electric energy detection device, the generator is connected to the storage battery, the electric energy detection device detects the electric energy of the storage battery, the generator is connected to the output shaft by a clutch, a signal input terminal of the controller is connected to the electric energy detection device, and a signal output terminal of the controller is connected to the clutch, and when the electric energy detection device detects that the electric energy of the storage battery is lower than a predetermined value, the controller controls the clutch to connect the generator to the output shaft so that the generator generates electricity for the storage battery.

9. 9. The pneumatic power plant according to claim 8, wherein the driving device is an electric motor, the electric motor is connected to the power source by a start switch, and the electric motor is provided with a speed governor.

10. 10. The pneumatic power plant according to claim 9, wherein the controller is communicatively connected to the start switch, the pressure replenishment device, and the clutch by a remote control.

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