Pneumatic motor actuating mechanism

Abstract

The utility model belongs to the technical field of instruments and meters, and relates to a pneumatic motor actuating mechanism which comprises a box body, a driving gear set and a transmission output assembly are rotatably arranged in the box body, and the driving gear set can drive the transmission output assembly. The box body is provided with a pneumatic module and a manual assembly in a matched mode, and the pneumatic module and the manual assembly can respectively drive the driving gear set to rotate. A manual and automatic clutch is arranged on a box cover of the box body and can adjust the axial position of a first-stage driven bevel gear of the driving gear set so that a first driven bevel gear constructed at the upper end of the first-stage driven bevel gear can be meshed with a first-stage driving bevel gear connected with the output end of the pneumatic module. The actuating mechanism is simple and reasonable in structure, safe and reliable to operate and capable of improving undesirable phenomena such as unsmooth action or action dead points; clutch switching is achieved through the manual and automatic clutch, and automatic operation and manual operation do not affect each other.

Description

Technical Field

[0001] This utility model belongs to the field of instrumentation and meter technology, and relates to a pneumatic motor actuator. Background Technology

[0002] In the instrumentation industry, most existing pneumatic motor actuators use piston motors or curved guide rails, which are complex in structure. Their performance is greatly affected by machining accuracy, and they frequently experience abnormalities such as sluggish operation or dead spots. In addition, most of their handwheels are mounted on the output spindle. During automatic operation, the handwheel rotates with the motor, but during manual operation, the pistons or curved guide rails inside the motor move synchronously without any clutch switching operation, resulting in a large manual operating force, or even making manual operation impossible. Furthermore, due to the special nature of their structure and application, stroke feedback can only be achieved by installing an internal feedback module and an external converter, without an intuitive visual stroke feedback device. This makes the requirements for subsequent product selection and practical application too high, and professional personnel are needed for on-site installation, making it difficult to achieve automated control of instrument valves. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a pneumatic motor actuator. This actuator has a simple and reasonable structure, is safe and reliable in operation, and can improve problems such as sluggish operation or dead spots. It achieves clutch switching through a manual / automatic clutch, so that automatic and manual operation do not interfere with each other.

[0004] According to the technical solution of this utility model: a pneumatic motor actuator includes a housing, in which a drive gear set and a transmission output component are rotatably arranged, the drive gear set being able to drive the transmission output component; characterized in that the housing is equipped with a pneumatic module and a manual component, the pneumatic module and the manual component being able to drive the drive gear set to rotate respectively;

[0005] The box cover is equipped with a manual / automatic clutch, which can adjust the axial position of the first-stage driven bevel gear of the drive gear set so that the first driven bevel gear constructed at the upper end of the first-stage driven bevel gear meshes with the first-stage driving bevel gear connected to the output end of the pneumatic module, or the second driven bevel gear constructed at the lower end of the first-stage driven bevel gear meshes with the first-stage driving bevel gear connected to the output end of the manual component.

[0006] The first-stage driven bevel gear and the second-stage driving gear of the drive gear set form an axial sliding fit and rotate as a whole;

[0007] The secondary driving gear drives the secondary driven gear to rotate, and the secondary driven gear drives the stroke feedback component and the transmission output component to rotate.

[0008] As a further improvement of this utility model, the pneumatic module is disposed in an independent cavity integrally connected to the side of the housing;

[0009] The pneumatic module includes a stator assembly and a rotor assembly rotatably disposed within the stator assembly;

[0010] The rotor assembly includes a rotor with several pairs of radially symmetrical blade slots evenly distributed on the circumferential surface of the rotor. Each blade slot contains a blade, and two mutually symmetrical blade slots are connected by a through circular pin hole. A first cylindrical pin is fitted into the circular pin hole, and the two ends of the first cylindrical pin are in contact with the inner side of the corresponding blade so that when one side of the blade is subjected to a small lateral force, it drives the other side of the blade, so that all blades are in close contact with the circular inner hole of the stator assembly. The irregular step three constructed at the lower end of the rotor is connected to the irregular hole of the first stage drive bevel gear.

[0011] The independent chamber is provided with two pipe thread interfaces on its outer side, which serve as inlet and outlet pipes for connecting compressed air. The two pipe thread interfaces are respectively connected to two sets of air inlets on the side of the stator assembly, so that compressed air enters the chamber formed by the blades, rotor and stator sleeve of the stator assembly from one of the pipe thread interfaces. After driving the rotor to rotate, the compressed air is discharged from the other pipe thread interface.

[0012] As a further improvement of this utility model, the stator assembly includes a stator sleeve, and a pin hole is provided at each end of the stator sleeve. A cylindrical pin is placed in each pin hole. The cylindrical pin passes through the pressure plates provided at both ends of the stator sleeve to achieve positioning and prevent rotation.

[0013] The stator sleeve has a circular inner hole eccentric to its outer circle to rotatably mount the rotor assembly. Four axially arranged support ribs are evenly distributed along the circumferential direction on the outer circle of the stator sleeve. The support ribs abut against the inner wall of the stator sleeve. Two adjacent support ribs form cavities between the inner wall of the stator sleeve and the flanges integrally connected to the axial ends of the stator sleeve. The air intakes corresponding to the two cavities are respectively connected to the corresponding pipe thread interfaces.

[0014] An end cap is provided at the outer end of the independent chamber.

[0015] As a further improvement of this utility model, the manual-automatic clutch includes a handle, which is rotatably mounted on the cover. The front end of the handle is hinged to a drive rod, which passes through the cover and extends into the housing. A secondary drive gear is sleeved on the drive rod. From top to bottom, a planar thrust bearing and a compression spring are arranged in sequence in the inner cavity of the secondary drive gear. The lower end of the compression spring presses against the upper surface of the circular step of the drive rod.

[0016] A planar thrust bearing 2 is provided on the drive rod below the circular step 1, and the lower end face of the planar thrust bearing 2 is supported on the bottom plane of the irregular hole 1 of the first stage driven bevel gear.

[0017] The irregular step at the lower end of the second-stage driving gear extends into the irregular hole, forming an axial sliding fit between the second-stage driving gear and the first-stage driven bevel gear.

[0018] A standard bearing three is installed in the lower inner hole of the first-stage driven bevel gear. A support shaft is installed on the inner ring of the standard bearing three. The external structure of the support shaft is a shaped step two. The lower end of the shaped step two is installed in the shaped mounting hole one at the bottom of the housing. A compression spring two is installed in the inner hole of the support shaft. The upper end of the compression spring two is pressed against the top surface of the inner hole of the support shaft, and the lower end of the compression spring two is pressed against the bottom plane of the shaped mounting hole one.

[0019] As a further improvement of this utility model, the top surface of the box cover is provided with two symmetrically distributed perforated bosses, and a connecting plate is provided between the two perforated bosses.

[0020] The connecting plate is provided with three circular through holes arranged in an isosceles triangle shape: circular through hole 1, circular through hole 2, and circular through hole 3, with circular through hole 2 located at the vertex of the isosceles triangle. The handle is provided with three circular through holes: circular through hole 4, circular through hole 5, circular through hole 6, and circular through hole 7. Circular through hole 5 is connected to circular through hole 8 at the upper end of the drive rod via standard pin 3 and cotter pin 3. Circular through hole 4 is connected to circular through hole 2 via standard pin 2 and cotter pin 2. Circular through hole 1 is connected to the perforated boss via standard pin 1 and cotter pin 1. Circular through hole 3 can be engaged with circular through hole 7 or circular through hole 6 via standard pin 3 and cotter pin 3.

[0021] As a further improvement of this utility model, the lower end of the secondary driven gear is constructed with an integrally connected feedback driving gear and a cylindrical step four, and a standard bearing two is installed on the cylindrical step four. The upper end of the secondary driven gear is constructed with an integrally connected cylindrical step five, and a standard bearing one is installed on the cylindrical step five. The standard bearing one is supported by the cover, and the standard bearing two is supported by the circular inner hole three of the housing.

[0022] As a further improvement of this utility model, the stroke feedback component includes a feedback driven gear, a feedback shaft, a standard bearing five, and a standard bearing four. The standard bearing five is installed on the upper part of the feedback shaft, and the feedback driven gear and the standard bearing four are sequentially positioned and installed on the lower part of the feedback shaft from top to bottom. The feedback driven gear meshes with the feedback driving gear, and the upper end of the feedback shaft extends out of the housing cover.

[0023] As a further improvement of this utility model, the outer end of the independent chamber is provided with an end cap, the inner side of the end cap is constructed with an axially extending circular inner hole five, and a pin hole is provided on the inner end face of the circular inner hole five, and a cylindrical pin two extends into the pin hole.

[0024] As a further improvement of this utility model, the transmission output component includes an output gear, which meshes with a secondary driven gear.

[0025] The technical advantages of this utility model are as follows: This utility model has a reasonable structure, is safe and reliable in operation, and has both automatic and manual drive functions. Furthermore, the clutch switching operation between the automatic and manual modes ensures that the two drive methods do not interfere with each other, making manual operation more labor-saving. On the other hand, its unique stroke feedback component allows for precise control of each stroke through the selection of different external control accessories and stroke compilation, which greatly improves product application performance and avoids the impact of electronic components on the product's safety performance. Products designed and manufactured using this utility model have a simple structure, small size, are easy to operate, are inherently safe and reliable, and are energy-efficient and environmentally friendly, without causing cost waste or environmental pollution. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is an assembly diagram of the rotor assembly of this utility model.

[0028] Figure 3 for Figure 2 Sectional view along line AA.

[0029] Figure 4 This is a schematic diagram of the pneumatic motor rotor assembly of this utility model.

[0030] Figure 5 This is a schematic diagram of the pneumatic motor stator assembly of this utility model.

[0031] Figure 6 This is a schematic diagram of the box structure of this utility model.

[0032] Figure 7 This is a schematic diagram of the structure of the inner surface of the box cover of this utility model.

[0033] Figure 8 This is a schematic diagram of the structure of the outer surface of the box cover of this utility model.

[0034] Figure 9 This is a schematic diagram of the gear assembly structure of this utility model.

[0035] Figure 10 This is a schematic diagram of the manual / automatic clutch structure of this utility model.

[0036] Figure 11 This is a schematic diagram of the manual / automatic clutch structure of this utility model.

[0037] Figure 12 This is a schematic diagram of the feedback component structure of this utility model.

[0038] Figure 13 This is a schematic diagram of the outer structure of the first-stage driven bevel gear of this utility model.

[0039] Figure 14 This is a schematic diagram of the inner structure of the first-stage driven bevel gear of this utility model.

[0040] Figure 15 This is a schematic diagram of the two-stage drive gear structure of this utility model.

[0041] Figure 16 This is a schematic diagram of the two-stage drive gear structure of this utility model.

[0042] Figure 17 This is a schematic diagram of the end cap structure of this utility model.

[0043] Figure 18 This is a schematic diagram of the connecting plate structure of this utility model.

[0044] Figure 19 This is a schematic diagram of the handle structure of this utility model.

[0045] Figure 20 This is a schematic diagram of the drive rod structure of this utility model. Detailed Implementation

[0046] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0047] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0048] like Figures 1-20 As shown, this utility model is a pneumatic motor actuator, including a housing 3. A drive gear set 5 and a transmission output component 9 are rotatably arranged inside the housing 3. The drive gear set 5 can drive the transmission output component 9 to realize power output. The housing 3 is also equipped with a pneumatic module and a manual component 7, which can drive the drive gear set 5 to rotate respectively.

[0049] A manual / automatic clutch 6 is installed on the cover 4 of the housing 3. The manual / automatic clutch 6 can adjust the axial position of the first-stage driven bevel gear 5.2 of the drive gear set 5, so that the first driven bevel gear 5.2a constructed at the upper end of the first-stage driven bevel gear 5.2 meshes with the first-stage driving bevel gear 5.1 connected to the output end of the pneumatic module, or the second driven bevel gear 5.2b constructed at the lower end of the first-stage driven bevel gear 5.2 meshes with the second-stage driving bevel gear 5.3 connected to the output end of the manual assembly 7. The manual assembly 7 uses a handwheel, and the inner end of the mounting shaft of the handwheel is connected to the second-stage driving bevel gear 5.3.

[0050] The first-stage driven bevel gear 5.2 and the second-stage driving gear 5.4 of the drive gear set 5 form an axial sliding fit and rotate as a whole.

[0051] The secondary drive gear 5.4 drives the secondary driven gear 5.5 to rotate, and the secondary driven gear 5.5 drives the stroke feedback component 8 and the transmission output component 9 to rotate.

[0052] like Figure 2 , 3 As shown, the pneumatic module is located in an independent chamber 3.1a integrally connected to the side of the housing 3.

[0053] like Figure 4 , 5 As shown, the pneumatic module includes a stator assembly 2 and a rotor assembly 1 rotatably fitted within the stator assembly 2.

[0054] The rotor assembly 1 includes a rotor 1.1. The rotor 1.1 has cylindrical steps 1.1c and 1.1d at both ends for passing through the pressure plate 2.1 of the stator assembly 2 and respectively mounting standard bearings 11 and 12. The rotor 1.1 has several pairs of radially symmetrical blade slots 1.1a evenly distributed on its circumferential surface. Each blade slot 1.1a contains a blade 1.2. Two symmetrical blade slots 1.1a are connected by a through circular pin hole 1.1b. A first cylindrical pin 1.3 is fitted into the circular pin hole 1.1b. The two ends of the first cylindrical pin 1.3 contact the inner side of the corresponding blade 1.2, so that when one blade 1.2 is subjected to a small lateral force, it drives the blade on the other side, ensuring that all blades are in close contact with the circular inner hole 2.2a of the stator assembly 2. Furthermore, in specific production practice, each set of symmetrical blade slots 1.1a is provided with two circular pin holes 1.1b in the middle part; the inner surfaces of the upper and lower ends of the blades 1.2 are constructed with chamfered structures to facilitate fine position adjustments of the blades 1.2. The irregularly shaped step 1.1e constructed at the lower end of the rotor 1.1 is connected to the irregularly shaped hole 5.1a of the first-stage drive bevel gear 5.1, and is protected against detachment using commonly used side anti-detachment pin technology.

[0055] Two threaded pipe interfaces 3.1b are provided on the outside of the independent chamber 3.1a, which serve as inlet and outlet pipes for connecting compressed air. The two threaded pipe interfaces 3.1b are respectively connected to two sets of air inlets 2.2c on the side of the stator assembly 2, so that compressed air enters the chamber formed by the blade 1.2, rotor 1.1 and stator sleeve 2.2 of the stator assembly 2 from one of the threaded pipe interfaces 3.1b. After driving the rotor 1.1 to rotate, the compressed air is discharged from the other threaded pipe interface. Reverse air intake can realize reverse operation.

[0056] The stator assembly 2 includes a stator sleeve 2.2. A pin hole 2.2b is provided at each end of the stator sleeve 2.2. A cylindrical pin 2.3 is placed in each pin hole 2.2b. The cylindrical pin 2.3 passes through the pressure plates 2.1 provided at both ends of the stator sleeve 2.2 to achieve positioning and prevent rotation.

[0057] The stator sleeve 2.2 has a circular inner hole 2.2a eccentric to its outer circle to rotatably mount the rotor assembly 1. Four axially arranged support ribs are evenly distributed along the circumferential direction on the outer circle of the stator sleeve 2.2. The support ribs abut against the inner wall of the stator sleeve 2.2. Two adjacent support ribs form cavities between the inner wall of the stator sleeve 2.2 and the flange plates integrally connected to the two axial ends of the stator sleeve 2.2. The air inlets 2.2c corresponding to the two cavities are respectively connected to the corresponding pipe thread interfaces 3.1b.

[0058] Furthermore, an end cap 10 is provided at the outer end of the independent chamber 3.1a. The inner surface of the end cap 10 is constructed with an axially extending circular inner hole 10.1b, and a pin hole 10.1a is provided on the inner end face of the circular inner hole 10.1b. A cylindrical pin 2.3 extends into the pin hole 10.1a.

[0059] like Figure 10 , 11 As shown, the manual / automatic clutch 6 enables switching between automatic and manual drive modes. The manual / automatic clutch 6 includes a handle 6.1, which is rotatably mounted on the cover 4. A drive rod 6.9 is hinged to the front end of the handle 6.1, and the drive rod 6.9 extends through the cover 4 into the housing 3. A secondary drive gear 5.4 is fitted onto the drive rod 6.9. The inner cavity of the secondary drive gear 5.4 contains, from top to bottom, a planar thrust bearing 6.10 and a compression spring 6.11. The lower end of the compression spring 6.11 presses against the upper surface of the circular step 6.9b of the drive rod 6.9.

[0060] A planar thrust bearing 6.12 is installed on the drive rod 6.9 below the circular step 6.9b. The lower end face of the planar thrust bearing 6.12 is supported on the bottom plane of the irregular hole 5.2c of the first-stage driven bevel gear 5.2.

[0061] likeFigure 10 , 11 As shown in Figures 13-16, the irregular step 5.4b at the lower end of the secondary driving gear 5.4 extends into the irregular hole 5.2c, forming an axial sliding fit between the secondary driving gear 5.4 and the primary driven bevel gear 5.2.

[0062] A standard bearing 6.13 is installed in the lower inner hole of the first-stage driven bevel gear 5.2. A support shaft 6.14 is installed on the inner ring of the standard bearing 6.13. The external structure of the support shaft 6.14 is a shaped step 6.14a. The lower end of the shaped step 6.14a is installed in the shaped mounting hole 3.1c at the bottom of the housing 3. A compression spring 6.15 is installed in the inner hole of the support shaft 6.14. The upper end of the compression spring 6.15 is pressed against the top surface of the inner hole of the support shaft 6.14, and the lower end of the compression spring 6.15 is pressed against the bottom plane of the shaped mounting hole 3.1c.

[0063] like Figure 7 , 8 As shown, the top surface of the box cover 4 is provided with two symmetrically distributed perforated bosses 4.1a, and a connecting plate 6.5 is provided between the two perforated bosses 4.1a.

[0064] like Figure 18 and 10 As shown in Figure 11, the connecting plate 6.5 is provided with three circular through holes arranged in an isosceles triangular shape: 6.5a (first), 6.5b (second), and 6.5c (third), with the second circular through hole 6.5b located at the vertex of the isosceles triangle. The handle 6.1 is provided with three circular through holes: 6.1a (fourth), 6.1b (fifth), 6.1c (sixth), and 6.1d (seventh). The fifth circular through hole 6.1b communicates with the eighth circular through hole 6.9a at the upper end of the drive rod 6.9. Standard pin 6.7 and cotter pin 6.8 are connected together. Circular through hole 6.1a and circular through hole 6.5b are connected by standard pin 6.2 and cotter pin 6.6. Circular through hole 6.5a and perforated boss 4.1a are connected by standard pin 6.3 and cotter pin 6.4. Circular through hole 6.5c can be engaged with circular through hole 6.1d or circular through hole 6.1c by standard pin 6.7 and cotter pin 6.16.

[0065] The lower end of the secondary driven gear 5.5 is constructed with an integrally connected feedback driving gear 5.5a and a cylindrical step 4 5.5b. A standard bearing 2 5.7 is installed on the cylindrical step 4 5.5b. The upper end of the secondary driven gear 5.5 is constructed with an integrally connected cylindrical step 5.5c. A standard bearing 1 5.6 is installed on the cylindrical step 5.5c. The standard bearing 1 5.6 is supported by the cover 4, and the standard bearing 2 5.7 is supported by the circular inner hole 3.1e of the housing 3.

[0066] The stroke feedback assembly 8 includes a feedback driven gear 8.1, a feedback shaft 8.2, a standard bearing 8.3, and a standard bearing 8.4. The standard bearing 8.3 is mounted on the upper part of the feedback shaft 8.2. The feedback driven gear 8.1 and the standard bearing 8.4 are sequentially positioned and limited from top to bottom on the lower part of the feedback shaft 8.2. The feedback driven gear 8.1 meshes with the feedback driving gear 5.5a. The upper end of the feedback shaft 8.2 extends out of the housing cover 4.

[0067] It is understood that the transmission output assembly 9 includes an output gear that meshes with the secondary driven gear 5.5.

[0068] The specific operating principle of this utility model is as follows: According to the solution of this utility model, the specific implementation process of its automatic function is that the air source enters the stator assembly 2 from one of the two pipe thread interfaces 3.1b of the independent cavity of the housing 3, and is discharged from the other interface. During the intake and exhaust process, the pressure difference generated by the difference in the effective area of ​​the chamber formed by the blade rotor assembly 1 and the stator assembly 2 is used to drive the rotor 1.1 to rotate, realize torque output, and realize the function of torque amplification and speed reduction through the multi-stage transmission of the gear set 5.

[0069] According to the present invention, the specific implementation process of its automatic and manual clutch switching function is as follows: when the circular through hole 6.1d on the handle 6.1 of the manual / automatic clutch 6 is aligned with the circular through hole 6.5a on the connecting plate 6.5, the standard pin 6.7 is passed through the circular through hole 6.1d and the circular through hole 6.5a and locked with the cotter pin 6.16, which is the automatic state. After the standard cotter pin 6.16 and standard pin 6.7 are pulled out in sequence, the handle 6.1 is operated upwards to align the circular through hole 6.1c with the circular through hole 6.5a of the connecting plate 6.5. Then, the standard pin 6.7 is passed through the circular through holes 6.1c and 6.5a and locked with the cotter pin 6.16. The handle 6.1 will press down the drive rod 6.9, the planar thrust bearing 6.12, and the first-stage driven bevel gear 5.2, so that the upper bevel gear 5.2a of the first-stage driven bevel gear 5.2 separates from the first-stage driving bevel gear 5.1, while the lower bevel gear 5.2b of the first-stage driven bevel gear 5.2 meshes with the first-stage driving bevel gear 5.3. When the manual / automatic clutch 6 is switched, the reaction force of the internal compression spring 6.11 can keep the secondary drive gear 5.4 at its original height, while the compression spring 6.15 is compressed to a predetermined height to retain the necessary kinetic energy for resuming automatic operation, thus enabling manual operation.

[0070] According to the present invention, the specific implementation process of its stroke feedback component is as follows: the feedback drive gear 5.5a transmits the rotational speed transmitted by the gear set 5 to the feedback shaft 8.2 through the feedback gear pair, and then the output end of the feedback shaft 8.2 is displayed to the outside. It can also be used with existing stroke encoders and stroke switches and other control components to realize position feedback.

[0071] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pneumatic motor actuator comprising a housing (3) within which is rotatably disposed a drive gear set (5) and a drive output assembly (9), the drive gear set (5) being capable of driving the drive output assembly (9); characterised in that, The box (3) is matched with a pneumatic module and a manual assembly (7), which can respectively drive the driving gear set (5) to rotate; A hand-automatic clutch (6) is arranged on the box cover (4) of the box (3), which can realize axial position adjustment of the primary driven bevel gear (5.2) of the driving gear set (5), so that the first driven bevel gear (5.2a) arranged at the upper end of the primary driven bevel gear (5.2) is engaged with the primary driving bevel gear one (5.1) connected with the output end of the pneumatic module, or the second driven bevel gear (5.2b) arranged at the lower end of the primary driven bevel gear (5.2) is engaged with the primary driving bevel gear two (5.3) connected with the output end of the manual assembly (7); The primary driven bevel gear (5.2) is axially slidably connected with the secondary driving gear (5.4) of the driving gear set (5) and integrally rotates with the secondary driving gear (5.4); The secondary driving gear (5.4) drives the secondary driven gear (5.5) to rotate, and the secondary driven gear (5.5) drives the stroke feedback assembly (8) and the transmission output assembly (9) to rotate.

2. The pneumatic motor actuator of claim 1, wherein: The pneumatic module is arranged in the independent chamber (3.1a) integrally connected to the side of the box (3); The pneumatic module comprises a stator assembly (2) and a rotor assembly (1) rotatably arranged in the stator assembly (2); The rotor assembly (1) comprises a rotor (1.1), and a plurality of pairs of radially symmetrical blade grooves (1.1a) are uniformly arranged on the circumferential surface of the rotor (1.1). Each blade groove (1.1a) is matched with a blade (1.2). Two blade grooves (1.1a) are connected through a through circular pin hole (1.1b). A first cylindrical pin (1.3) is matched with the circular pin hole (1.1b). The two ends of the first cylindrical pin (1.3) are in contact with the inner sides of the corresponding blades (1.2), so that when one side of the blade (1.2) is subjected to a small lateral force, the other side of the blade is driven, so that all the blades are in close contact with the circular inner hole one (2.2a) of the stator assembly (2). The special-shaped step three (1.1e) arranged at the lower end of the rotor (1.1) is connected with the special-shaped hole (5.1a) of the primary driving bevel gear one (5.1). The outer side of the independent chamber (3.1a) is provided with two pipe threaded interfaces (3.1b) as inlet and outlet for connecting the pipeline of compressed air. The two pipe threaded interfaces (3.1b) are respectively connected with two groups of air inlet channels (2.2c) on the side of the stator assembly (2), so that the compressed air enters the chamber formed by the blade (1.2), the rotor (1.1) and the stator sleeve (2.2) of the stator assembly (2) from one of the pipe threaded interfaces (3.1b), and drives the rotor (1.1) to rotate. After that, the compressed air is discharged from the other pipe threaded interface.

3. The pneumatic motor actuator of claim 2, wherein: The stator assembly (2) includes a stator sleeve (2.2), and a pin hole two (2.2b) is arranged at each end of the stator sleeve (2.2), and a cylindrical pin two (2.3) is arranged in the pin hole two (2.2b), the cylindrical pin two (2.3) passes through the pressing plate (2.1) arranged at the two ends of the stator sleeve (2.2) respectively, and positioning and anti-rotation are realized; The stator sleeve (2.2) is provided with a circular inner hole one (2.2a) eccentric to the outer circle thereof, so that the rotor assembly (1) is rotatably arranged, four axially arranged support rib plates are uniformly arranged along the circumferential direction of the outer circle of the stator sleeve (2.2), the support rib plates abut against the inner wall of the stator sleeve (2.2), and adjacent two support rib plates and the flange plate integrally connected between the inner wall of the stator sleeve (2.2) and the two ends of the stator sleeve (2.2) in the axial direction form cavities respectively, and the two cavities correspondingly communicate with the corresponding pipe threaded interfaces (3.1b) through the air inlet channels (2.2c). End covers (10) are arranged at the outer ends of the independent chambers (3.1a).

4. The pneumatic motor actuator of claim 1, wherein: The hand automatic clutch (6) comprises a handle (6.1) rotatably arranged on the box cover (4), and a front end of the handle (6.1) is hingedly connected with a driving rod (6.9), the driving rod (6.9) penetrates through the box cover (4) and extends into the box body (3); a secondary driving gear (5.4) is sleeved on the driving rod (6.9), and a planar thrust bearing one (6.10) and a compression spring one (6.11) are sequentially arranged in the inner cavity of the secondary driving gear (5.4) from top to bottom; and the lower end of the compression spring one (6.11) is pressed against the upper surface of a circular step one (6.9b) of the driving rod (6.9). A planar thrust bearing two (6.12) is arranged on the driving rod (6.9) below the circular step one (6.9b), and the lower end surface of the planar thrust bearing two (6.12) supports the bottom plane of a special-shaped hole one (5.2c) of a primary driven bevel gear (5.2). A special-shaped step one (5.4b) at the lower end of the secondary driving gear (5.4) extends into the special-shaped hole one (5.2c), so that the secondary driving gear (5.4) is axially slidably connected with the primary driven bevel gear (5.2). A standard bearing three (6.13) is arranged in the lower inner hole of the primary driven bevel gear (5.2), an inner ring of the standard bearing three (6.13) is mounted on a support shaft (6.14), an outer part of the support shaft (6.14) is formed as a special-shaped step two (6.14a), the lower end of the special-shaped step two (6.14a) is mounted in a special-shaped mounting hole one (3.1c) in the bottom of the box body (3), a compression spring two (6.15) is arranged in the inner hole of the support shaft (6.14), the upper end of the compression spring two (6.15) is tightly pressed against the top surface of the inner hole of the support shaft (6.14), and the lower end of the compression spring two (6.15) is tightly pressed against the bottom plane of the special-shaped mounting hole one (3.1c).

5. The pneumatic motor actuator of claim 4, wherein: Two symmetrical hole bosses (4.1a) are arranged on the top surface of the box cover (4), and a connecting plate (6.5) is arranged between the two hole bosses (4.1a). The connecting plate (6.5) is provided with a circular hole one (6.5a), a circular hole two (6.5b) and a circular hole three (6.5c) arranged in an isosceles triangle shape, and the circular hole two (6.5b) is located at the top of the isosceles triangle. The handle (6.1) is provided with a circular hole four (6.1a), a circular hole five (6.1b), a circular hole six (6.1c) and a circular hole seven (6.1d); the circular hole five (6.1b) is connected with the circular hole eight (6.9a) at the upper end of the driving rod (6.9) through the standard pin shaft three (6.7) and the open pin three (6.8), the circular hole four (6.1a) is connected with the circular hole two (6.5b) through the standard pin shaft two (6.2) and the open pin two (6.6), the circular hole one (6.5a) is connected with the hole boss (4.1a) through the standard pin shaft one (6.3) and the open pin one (6.4), and the circular hole three (6.5c) can be matched with the circular hole seven (6.1d) or the circular hole six (6.1c) through the standard pin shaft three (6.7) and the open pin three (6.16).

6. The pneumatic motor actuator of claim 1, wherein: The lower end of the secondary driven gear (5.5) is sequentially structured with an integral feedback driving gear (5.5a) and a cylindrical step four (5.5b), the cylindrical step four (5.5b) is installed with a standard bearing two (5.7), and the upper end of the secondary driven gear (5.5) is structured with an integral cylindrical step five (5.5c), the cylindrical step five (5.5c) is installed with a standard bearing one (5.6), the standard bearing one (5.6) is supported on the box cover (4), and the standard bearing two (5.7) is supported on the circular inner hole three (3.1e) of the box body (3).

7. The pneumatic motor actuator of claim 6, wherein: The stroke feedback assembly (8) comprises a feedback driven gear (8.1), a feedback shaft (8.2), a standard bearing five (8.3) and a standard bearing four (8.4), the upper part of the feedback shaft (8.2) is installed with the standard bearing five (8.3), the feedback driven gear (8.1) and the standard bearing four (8.4) are sequentially and limitingly installed on the lower part of the feedback shaft (8.2) from top to bottom, the feedback driven gear (8.1) is engaged with the feedback driving gear (5.5a), and the upper end of the feedback shaft (8.2) extends out of the box cover (4).

8. The pneumatic motor actuator of claim 3, wherein: The inner side of the end cover (10) is structured with an axially extending circular inner hole five (10.1b), and a pin hole (10.1a) is arranged on the inner side end face of the circular inner hole five (10.1b), and the cylindrical pin two (2.3) extends into the pin hole (10.1a).

9. The pneumatic motor actuator of claim 1 wherein: The transmission output assembly (9) comprises an output gear engaged with the secondary driven gear (5.5).

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