CN210152727U - Pneumatic motor - Google Patents

Abstract

The embodiment of the utility model discloses pneumatic motor relates to power equipment technical field, which comprises a frame, the rotor, the cylinder body, ramp and oar pole, the rotor sets up in the frame, the rotor is equipped with the through hole, the cylinder body sets up outside the frame, the cylinder body is provided with outside protrusion and opening air current groove inwards, the degree of depth gradual change from the both ends of air current groove to middle part deepens, the ramp is fixed in the frame and is located outside the rotor, the ramp is parallel with the air current groove, oar pole slidable ground sets up in the through hole, gyro wheel and ramp sliding connection are passed through to the one end of oar pole, the other end is located the air current groove. The pneumatic motor provided by the embodiment of the utility model has simple working condition, and the conditions of poor sealing or failure and even incapability of starting can not occur; and the output torque and the rotating speed are stable.

Description

Pneumatic motor

Technical Field

The embodiment of the utility model provides a relate to power equipment technical field, concretely relates to pneumatic motor.

Background

A pneumatic motor, also known as a pneumatic motor, is a device that converts the pressure energy of compressed air into rotational mechanical energy, and is generally used as a rotary power source for more complex devices or machines. The existing pneumatic motor is divided into a vane type pneumatic motor and a piston type pneumatic motor according to the structure.

When the vane type pneumatic motor is ventilated, a small part of gas acts on the bottom of the vane through the vent hole at the bottom of the vane slot, so that the vane is popped up and pressed on the wall of the stator cavity; some have springs at the bottom of the blade slots to urge the blades to eject. When the stator is rotated, the blades are tightly pressed on the wall of the stator cavity under the action of centrifugal force to form sealing. The vanes are quick-wear parts, and the working conditions of the vanes are complex, so that the situation that one or more vanes cannot be completely ejected is easy to occur, the sealing is poor or invalid, and the output torque is unstable, the rotating speed is unstable, and even the starting cannot be performed.

The piston type pneumatic motor has a complex structure and is difficult to maintain, and the rotating speed of the piston type pneumatic motor cannot be very high due to reciprocating motion, so that the comprehensive output horsepower is small even if the torque of the piston type pneumatic motor is large.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a pneumatic motor to solve among the prior art because the output torque that the blade operating mode is complicated and lead to is unstable, the rotational speed is unstable, the problem that can't start even.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

according to a first aspect of embodiments of the present invention, a pneumatic motor, comprising:

the device comprises a rack, a first shaft hole and a second shaft hole, wherein an installation space is arranged in the rack, one end of the rack is provided with the first shaft hole, and the other end of the rack is of an open structure;

the rotor comprises a cylinder cover, a cover plate, an output shaft and a connecting column, wherein the cover plate and the cylinder cover are arranged at intervals and in parallel, the cylinder cover and the cover plate are respectively fixed on the output shaft, a plurality of penetrating holes distributed at intervals are formed in the edge of the cylinder cover, the connecting column is fixed between the cylinder cover and the cover plate, the connecting column is a hollow cylinder body, the connecting column and the penetrating holes are coaxially arranged, a slit-shaped slide way is arranged on the connecting column, the slide way is arranged along the length direction of the connecting column, the connecting column is provided with a plurality of connecting columns, the connecting columns and the penetrating holes are in one-to-one correspondence, and the direction of the slide way is outward along the normal direction of the output shaft;

the cylinder body is provided with a second shaft hole which is coaxial with the first shaft hole, the cylinder body is provided with an end face which is used for abutting against the cylinder cover, the cylinder body is provided with an airflow groove which protrudes outwards and has an inward opening, the overlooking surface of the airflow groove is arc-shaped, a space is arranged between two ends of the airflow groove, the space between the two ends of the airflow groove is larger than the inner diameter of the penetration hole, a part of the end face of the cylinder body which is used for abutting against the cylinder cover is arranged between the two ends of the airflow groove, the depth from the two ends to the middle part of the airflow groove is gradually increased, the cylinder body is provided with a first air hole and an exhaust hole which are communicated with the airflow groove, the first air hole is positioned at one end of the airflow groove, and the exhaust hole is positioned in;

the inclined rail is oval;

the paddle rod is a cylindrical rod, and one end of the paddle rod is provided with a roller used for being matched with the inclined rail;

wherein, the rotor is arranged in the mounting space of the frame, the output shaft is respectively and rotatably arranged in the first shaft hole and the second shaft hole, the cylinder body is fixed at one end of the frame provided with an open structure, the cylinder cover is contacted and sealed with the end surface of the cylinder body, the inclined rail is fixed in the mounting space of the frame and is positioned at the outer side of the rotor, the inclined rail is arranged in parallel with the bottom of the airflow groove, the axial distance between the inclined rail and the bottom of the airflow groove is equal to the distance between the roller and one end of the paddle lever far away from the roller, the paddle lever is slidably arranged in the penetration hole, one end of the paddle lever provided with the roller is positioned in the connecting column, the roller can roll along the inclined rail, the paddle lever is sealed with the penetration hole, when the end part of the paddle lever is positioned in the airflow groove, the end of the paddle lever is sealed with the airflow groove.

Further, the cylinder body is provided with a second air hole communicated with the airflow groove, and the second air hole is located at one end, far away from the first air hole, of the airflow groove.

Further, a pneumatic interface is provided at the first air hole and/or the second air hole.

Furthermore, two idler wheels are arranged on each paddle rod, the two idler wheels are arranged at intervals along the length direction of the paddle rod, and the two idler wheels are respectively located on the upper side surface and the lower side surface of the inclined rail.

Furthermore, two wheel shafts for mounting the rollers are arranged on each paddle rod, the wheel shafts are perpendicular to the paddle rods, and the two wheel shafts are arranged at intervals in the length direction of the paddle rods.

Furthermore, a sliding block with the same width as the sliding way is arranged on the paddle rod, and the wheel shaft is fixed on the sliding block.

Furthermore, the inclined rail wraps the rail and the road edge, the rail is fixed on the inner side of the road edge and is arranged in parallel with the airflow groove, and the two rollers are respectively positioned on the upper side surface and the lower side surface of the rail.

Further, the inclined rail is provided with a gap for assembling and a patch matched with the gap for use, and the patch is used for filling the gap so that the inclined rail has a continuous track.

Further, a mounting hole is formed in one end, provided with the first shaft hole, of the rack, so that the paddle rod can penetrate into the connecting column from the mounting hole when the paddle rod is mounted.

Further, a plurality of the through holes are evenly distributed along the circumferential direction of the output shaft.

The embodiment of the utility model provides a have following advantage:

the embodiment of the utility model provides a pneumatic motor, the one end of every oar pole can force the other end to hug closely the tank bottom at the air current groove of cylinder body under the effect of ramp, guarantees the sealed of oar pole and air current groove constantly to make the output shaft can last, steady rotation, guarantee the stability of output torque and rotational speed, the operating mode is simple, can not appear sealed variation or inefficacy, the unable condition that starts even.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural diagram of an air motor provided in embodiment 1 of the present invention;

FIG. 2 is a schematic view of the air motor of FIG. 1 with the frame and ramp removed;

FIG. 3 is a schematic view of the pneumatic motor of FIG. 2 with the rotor removed;

FIG. 4 is a schematic view of the pneumatic motor of FIG. 1 after the rotor and cylinder have been removed;

FIG. 5 is a schematic view of the pneumatic motor of FIG. 2 with the cylinder removed;

FIG. 6 is a schematic view of a rotor structure;

FIG. 7 is a schematic view (bottom view) of the rotor;

FIG. 8 is a schematic structural view of the cylinder;

FIG. 9 is a top view of the cylinder block;

FIG. 10 is a schematic view of the paddle shaft;

FIG. 11 is a schematic diagram of a patch structure.

In the figure:

1-a frame, 11-a first shaft hole, 12-a mounting plate, 13-a mounting column, 14-a mounting hole and 15-a lug;

2-rotor, 21-cylinder cover, 22-cover plate, 23-output shaft, 24-connecting column, 25-through hole, 26-slideway,

3-cylinder body, 31-second shaft hole, 32-end surface, 33-airflow groove, 34-first air hole, 35-second air hole and 36-exhaust hole;

4-inclined rail, 41-rail, 42-track edge, 43-patch;

5-paddle rod, 51-axle, 52-roller, 53-paddle, 54-slider.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Example 1

As shown in fig. 1 to 11, embodiment 1 provides an air motor including a frame 1, a rotor 2, a cylinder 3, a ramp 4, and a paddle shaft 5.

The inside installation space that is equipped with of frame 1, the one end of frame 1 is equipped with first axle hole 11, and 11 both ends in first axle hole are equipped with the bearing, and the other end of frame 1 is open structure. Specifically, the rack 1 includes a mounting plate 12 and a plurality of mounting posts 13, the mounting posts 13 are fixed at the edge of the mounting plate 12, and the mounting posts 13 are located at the same side of the mounting plate 12, a lug 15 for connecting the cylinder 3 is arranged at one end of the mounting post 13 far away from the mounting plate 12, and the first shaft hole 11 is located at the center of the mounting plate 12. The frame 1 is provided with a mounting hole 14 at one end provided with the first shaft hole 11, namely the mounting hole 14 is opened on the mounting plate 12, so that the paddle rod 5 is inserted into the connecting column 24 from the mounting hole 14 when the paddle rod 5 is mounted.

The rotor 2 includes a cylinder head 21, a cover plate 22, an output shaft 23, and a connecting column 24. The cover plate 22 and the cylinder cover 21 are arranged in parallel at intervals, the cylinder cover 21 and the cover plate 22 are fixed on the output shaft 23 respectively, and the output shaft 23 is located at the centers of the cylinder cover 21 and the cover plate 22. The edge of the cylinder cover 21 is provided with a plurality of penetrating holes 25 which are distributed at intervals, the penetrating holes 25 are circular through holes, and the penetrating holes 25 are uniformly distributed along the circumferential direction of the output shaft 23. The connecting column 24 is fixed between the cylinder cover 21 and the cover plate 22, two ends of the connecting column 24 are respectively fixed on the cylinder cover 21 and the cover plate 22, the connecting column 24 is perpendicular to the cylinder cover 21 and the cover plate 22, the connecting column 24 is a hollow cylinder, and the connecting column 24 and the threading hole 25 are coaxially arranged. The connecting column 24 is provided with a slit-shaped slideway 26, and the slideway 26 is arranged along the length direction of the connecting column 24, namely the section of the connecting column 24 is C-shaped. The connecting columns 24 are provided with a plurality of connecting columns 24, the connecting columns 24 correspond to the penetrating holes 25 one by one, and the direction of the slide ways 26 is outward along the normal direction of the output shaft 23.

The cylinder block 3 is provided with a second shaft hole 31 coaxial with the first shaft hole 11, and bearings are provided at both ends of the second shaft hole 31. The cylinder body 3 is provided with an end face 32 for abutting against the cylinder cover 21, and is further provided with an airflow groove 33 protruding outwards and having an inward opening, a notch of the airflow groove 33 is formed in the end face 32 of the cylinder body 3, the airflow groove 33 is arc-shaped in plan view, a space is formed between two ends of the airflow groove 33, and a part of the end face 32 of the cylinder body 3 for abutting against the cylinder cover 21 is arranged between two ends of the airflow groove 33. The distance between the two ends of the airflow groove 33 is greater than the inner diameter of the penetration hole 25, and when the penetration hole 25 is located between the two ends of the airflow groove 33, compressed air is prevented from communicating the two ends of the airflow groove 33 through the penetration hole 25. Here, outward means a direction away from the rotor 2, and inward means a direction toward the rotor 2. The depth from both ends to the middle of the air flow groove 33 gradually increases. The cylinder 3 is provided with a first air hole 34, a second air hole 35 and an exhaust hole 36 which are communicated with the air flow groove 33, the first air hole 34 is located at one end of the air flow groove 33, the second air hole 35 is located at the other end of the air flow groove 33, and a pneumatic interface is provided at the first air hole 34 and/or the second air hole 35. The discharge hole 36 is located at the center of the air flow groove 33. The exhaust holes 36 can be arranged in plurality, and the exhaust holes 36 are arranged at intervals; one may be provided. The exhaust holes 36 may be circular holes or slit-like holes, that is, long and narrow holes.

The inclined rail 4 is in an oval shape, the inclined rail 4 covers the rail 41 and the rail 42, the rail 41 is fixed on the inner side of the rail 42, the rail 41 is arranged in parallel with the bottom of the airflow groove 33, and the rail 41 and the rail 42 are in a convex structure. The ramp 4 is provided with a recess for fitting and a patch 43 for cooperating with the recess, the patch 43 being intended to fill the recess so that the ramp 4 has a continuous track 41.

The paddle rod 5 is a cylindrical rod and is slidably arranged in the through hole 25, and only one paddle rod 5 is arranged in each through hole 25. The diameter of the paddle shaft 5 is equal to the diameter of the through-going hole 25 so that the paddle shaft 5 is sealed with the through-going hole 25. The paddle lever 5 is provided with a roller 52 for cooperating with the ramp 4. In the present embodiment, each paddle 5 is provided with a slide block 54, two axles 51 and two rollers 52, the slide block 54 is fixed on the paddle 5, the slide block 54 can slide along the slide way 26, the width of the slide block 54 is equal to that of the slide way 26 so as to prevent the paddle 5 from rotating during sliding in the connecting column 24, the axles 51 are arranged perpendicular to the paddle 5 and fixed on the slide block 54, the two axles 51 are arranged at intervals in the length direction of the paddle 5, and the rollers 52 are rotatably arranged on the axles 51. After the installation, the two rollers 52 are respectively located on the upper and lower sides of the inclined rail 4, specifically, on the upper and lower sides of the rail 41, and the upper and lower sides of the rail 41 are designed to be closely attached to the rollers 52 in operation, or in operation, the rollers 52 are closely attached to the upper and lower sides of the rail 41 at any time. A sealing paddle 53 is arranged at one end of the paddle lever 5 far away from the roller 52, and the paddle 53 is used for sealing a gap between the paddle lever 5 positioned in the airflow groove 33 and the airflow groove 33. The paddle 53 is detachably fixed to the end of the paddle shaft 5 to allow for replacement of the frangible paddle 53.

The rotor 2 is arranged in the installation space of the frame 1, and the cylinder cover 21 is positioned at one end of the frame 1 with an opening. The cylinder body 3 is fixed on the outer side of one end of the frame 1, which is provided with an open structure, the cylinder body 3 is provided with a lug 15 which is matched with the lug 15 of the frame 1, and the cylinder body 3 can be detachably fixed on the frame 1 through a bolt. The output shaft 23 of the rotor 2 is rotatably provided in the first shaft hole 11 and the second shaft hole 31, respectively, and the output shaft 23 and the shaft hole are fixed by a bearing. The cylinder cover 21 of the rotor 2 contacts and seals with the end face 32 of the cylinder body 3, and clearance sealing is adopted under the condition of ensuring processing precision and assembling precision, namely, the cylinder cover 21 and the end face 32 are directly sealed, and in an alternative scheme, labyrinth sealing or sealing sheet sealing can be adopted. Since the interval between both ends of the air flow groove 33 is larger than the inner diameter of the penetration hole 25, that is, the interval between both ends of the air flow groove 33 is larger than the diameter of the paddle lever 5, it is prevented that both ends of the air flow groove 33 are directly communicated through the penetration hole 25. The inclined rail 4 is fixed in the installation space of the frame 1, the inclined rail 4 is positioned on the outer side of the rotor 2, the inclined rail 4 is arranged in parallel with the bottom of the airflow groove 33, the axial distance between the inclined rail 4 and the bottom of the airflow groove 33 is equal to the distance between the roller 52 and one end, far away from the roller 52, of the paddle lever 5, specifically, the rail 41 is arranged in parallel with the bottom of the airflow groove 33, the axial distance between the upper surface of the rail 41 and the bottom of the airflow groove 33 is equal to the distance between the lower rim of the roller positioned on the upper surface of the rail 41 and one end, far away from the roller 52, of the paddle lever 5, and the axial distance between the lower surface of the rail 41 and the bottom of the airflow groove 33 is equal to the distance between the upper rim of the roller positioned on the lower surface of the rail. The paddle rod 5 is slidably inserted into the through hole 25, one end of the paddle rod 5 provided with the roller 52 is located in the connecting column 24, the roller 52 extends out of the slide way 26, the two rollers 52 are respectively located on the upper side surface and the lower side surface of the track 41, and the roller 52 can roll along the track 41 of the inclined rail 4. The paddle rod 5 is sealed with the through hole 25, and when the end of the paddle rod 5 is positioned in the airflow groove 33, the end of the paddle rod 5 is sealed with the airflow groove 33; the gap sealing is adopted under the condition of ensuring the processing precision and the assembling precision, namely the paddle rod 5 is directly sealed with the through hole 25, and the end part of the paddle rod 5 is directly sealed with the airflow groove 33.

In this embodiment, the paddle 5 cannot rotate freely relative to the attachment post 24 because the roller 52 of the paddle 5 extends out of the channel 26 of the attachment post 24. During assembly, the two rollers 52 cannot avoid the rail 41 of the ramp 4, so that a notch is provided in the ramp 4, for example, the ramp 4 can be cut off to mount the paddle 5, so that the two rollers 52 are located on the upper and lower sides of the rail 41. The gap affects the continuity of the rail 41, the cut part is simply processed to form a patch 43, and the patch 43 is used for filling the gap, so that the gap is filled, the inclined rail 4 is complete, and the rolling of the roller 52 on the rail 41 of the inclined rail 4 is not affected. The rollers 52 are designed to pass directly on the axle 51 and are stopped by the curb 42 during rolling without being thrown off by centrifugal force. In another alternative, the roller 52 is designed to be bolted to the paddle 5 with bearings, without the rail 42 limiting the roller 52; the paddle 5 can be installed first, and the design of the gap and the patch 43 on the inclined rail 4 can be abandoned when the roller 52 is installed.

In the embodiment, since the mounting holes 14 are formed in the mounting plate 12, the paddle 5 can be inserted into the connecting column 24 from the mounting holes 14 or the paddle 5 in the connecting column 24 can be pulled out from the mounting holes 14 without removing the cylinder 3, thereby facilitating maintenance or replacement of the paddle 5, the roller 52 on the paddle 5, the paddle 53 on the paddle 5, and the like.

When in work: compressed gas enters the airflow groove 33 from the first air hole 34, the paddle rod 5 positioned in the airflow groove 33 is pushed to slide towards the middle of the airflow groove 33, and in the moving process of the paddle rod 5, as the paddle rod 5 is in the threading hole 25 and the connecting column 24, the paddle rod 5 drives the cylinder cover 21, the cover plate 22 and the connecting column 24 to rotate around the axes of the first shaft hole 11 and the second shaft hole 31, so that the output shaft 23 rotates and outputs kinetic energy outwards. After the paddle rod 5 passes through the exhaust hole 36, the air is discharged out of the airflow groove 33, and the paddle rod 5 continues to slide along the airflow groove 33 under the driving of the cylinder cover 21 and the connecting column 24; the compressed gas slides through the first air hole 34 to do work on the paddle rod 5 again, and the paddle rod 5 is pushed to slide to the exhaust hole 36 along the sliding chute; and the process is repeated, so that the output shaft 23 continuously and stably rotates. Since the rail 41 and the airflow groove 33 are arranged in parallel and the roller 52 of the paddle lever 5 rolls along the rail 41, the paddle lever 5 reciprocally slides in the axial direction within the threading hole 25 as the paddle lever 5 slides along the airflow groove 33; meanwhile, the track 41 of the inclined rail 4 forces one end of the paddle lever 5 positioned in the airflow groove 33 to be in contact with the bottom of the airflow groove 33 through the roller 52, and the sealing of the paddle lever 5 and the airflow groove 33 is ensured.

The compressed gas pushes the paddle rod 5 to slide from the first air hole 34 to the exhaust hole 36 because the compressed gas has compression energy and can do work outwards, while the depth from the two ends to the middle part of the airflow groove 33 is gradually deepened, and in the process that the paddle rod 5 slides towards the middle part of the airflow groove 33, the volume of the compressed gas sealed in the airflow groove 33 between the paddle rod 5 and the first air hole 34 can be enlarged, namely the compression energy is released and the work outwards is done. Due to the use of a plurality of paddles 5, the volume of compressed gas sealed in the launders between adjacent paddles 5 is also increased. In the present embodiment, the compressed gas becomes large in volume because of the inevitable result of the compressed gas having compression energy, similar to the working principle of the vane-type air motor.

In the pneumatic motor provided by the embodiment, one end of each paddle rod 5 is forced to be tightly attached to the bottom of the airflow groove 33 under the action of the rail 41 of the inclined rail 4, so that the sealing between the paddle rods 5 and the airflow groove 33 is ensured at any time. When the blades 53 are arranged, the sealing between the blades 53 and the airflow groove 33 is ensured at all times, the working condition is simple, and the phenomenon that the sealing is poor or fails or even cannot be started due to the 'condition that one or more blades cannot be completely ejected' can be avoided. The paddle 53 of the embodiment is a wearing part, and although the same as the prior art, the paddle is a wearing part, the working condition is simple, the situation that the paddle cannot be ejected is avoided, and when the sealing effect is not good, the paddle 53 can be replaced.

In the present embodiment, since the plurality of paddle levers 5 are provided, the output shaft 23 can be continuously and smoothly rotated. Compared with the existing pneumatic motor, the pneumatic motor of the embodiment is more stable in output torque and rotation speed.

In the sealing form of the pneumatic motor of the present embodiment, when the manufacturing accuracy and the assembly accuracy meet the accuracy requirements, the cylinder cover 21 and the end surface 32 of the cylinder body 3, the paddle lever 5 and the threading hole 25, and the paddle lever 5 and the airflow groove 33 are all sealed by gaps. When the clearance seal cannot be used, a labyrinth seal or a sealing sheet can be used for sealing between the cylinder cover 21 and the cylinder body 3, the output shaft 23 and the shaft hole can be sealed by an oil seal, the paddle rod 5 and the threading hole 25 can be sealed by a sealing strip or a sealing ring, and the paddle rod 5 and the airflow groove 33 can be sealed by a sealing strip or a sealing sheet 53; or all sealing strips may be used to achieve the desired seal. Gap sealing is preferred when the manufacturing accuracy and assembly accuracy meet the accuracy requirements.

When the paddle 53 is used for sealing, the height of the paddle 53 is smaller than the depth of the through hole 25 so as to ensure that the paddle rod 5 is always sealed with the through hole 25 and avoid the air leakage from the through hole 25 when the paddle 53 is positioned in the through hole 25.

After the paddle 5 slides through the exhaust hole 36, because the depth of the airflow groove 33 is gradually reduced, a process of compressing air is formed, and therefore, the second air hole 35 is arranged, air on the front side of the sliding direction of the paddle 5 can be exhausted, and reduction of power or efficiency caused by compressed air is avoided.

In addition, when the pneumatic interfaces are arranged at the first air hole 34 and the second air hole 35, the forward and reverse rotation technology can be realized. Namely, the first air hole 34 is used for air intake, and the second air hole 35 is used for air exhaust; or the first air hole 34 is used for exhaust and the second air hole 35 is used for intake.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. A pneumatic motor, comprising:

the device comprises a rack (1), wherein an installation space is arranged inside the rack (1), a first shaft hole (11) is formed in one end of the rack (1), and the other end of the rack (1) is of an open structure;

rotor (2), rotor (2) are including cylinder cap (21), apron (22), output shaft (23) and spliced pole (24), apron (22) with cylinder cap (21) interval and parallel arrangement, cylinder cap (21) with apron (22) are fixed in respectively output shaft (23) the edge of cylinder cap (21) sets up wearing of a plurality of interval distribution and draws hole (25), spliced pole (24) are fixed in cylinder cap (21) with between apron (22), spliced pole (24) are the cavity cylinder, spliced pole (24) with wear to draw hole (25) coaxial line setting, be equipped with slide (26) in gap form on spliced pole (24), slide (26) are followed the length direction setting of spliced pole (24), spliced pole (24) are equipped with many, many spliced pole (24) and a plurality of wear to draw hole (25) one-to-one, the slideway (26) faces outwards along the normal direction of the output shaft (23);

the cylinder body (3), the cylinder body (3) is provided with a second shaft hole (31) which is coaxial with the first shaft hole (11), the cylinder body (3) is provided with an end face (32) which is used for being abutted to the cylinder cover (21), the cylinder body (3) is provided with an airflow groove (33) which protrudes outwards and has an inward opening, the overlooking surface of the airflow groove (33) is arc-shaped, a space is arranged between two ends of the airflow groove (33), the space between two ends of the airflow groove (33) is larger than the inner diameter of the through hole (25), a part of the end face (32) of the cylinder body (3) which is used for being abutted to the cylinder cover (21) is arranged between two ends of the airflow groove (33), the depth from two ends to the middle part of the airflow groove (33) is gradually deepened, the cylinder body (3) is provided with a first air hole (34) and an exhaust hole (36) which are communicated with the airflow groove (33, the first air hole (34) is positioned at one end of the air flow groove (33), and the exhaust hole (36) is positioned in the middle of the air flow groove (33);

the inclined rail (4), the inclined rail (4) is oval;

the paddle rod (5) is a cylindrical rod, and one end of the paddle rod (5) is provided with a roller (52) used for being matched with the inclined rail (4);

wherein the rotor (2) is arranged in an installation space of the frame (1), the output shaft (23) is respectively and rotatably arranged in the first shaft hole (11) and the second shaft hole (31), the cylinder body (3) is fixed at one end of the frame (1) provided with an open structure, the cylinder cover (21) is in contact with and sealed with an end surface (32) of the cylinder body (3), the inclined rail (4) is fixed in the installation space of the frame (1), the inclined rail (4) is positioned at the outer side of the rotor (2), the inclined rail (4) is arranged in parallel with the groove bottom of the airflow groove (33), the axial distance between the inclined rail (4) and the groove bottom of the airflow groove (33) is equal to the distance between the roller (52) and one end of the paddle lever (5) far away from the roller (52), and the paddle lever (5) is arranged in the penetrating hole (25) in a penetrating way, and one end of the paddle rod (5) provided with the roller (52) is positioned in the connecting column (24), the roller (52) can roll along the inclined rail (4), the paddle rod (5) is sealed with the through hole (25), and when the end of the paddle rod (5) is positioned in the airflow groove (33), the end of the paddle rod (5) is sealed with the airflow groove (33).

2. An air motor according to claim 1, wherein the cylinder block (3) is provided with a second air hole (35) communicating with the air flow groove (33), the second air hole (35) being located at an end of the air flow groove (33) remote from the first air hole (34).

3. Pneumatic motor according to claim 2, wherein a pneumatic interface is provided at the first air hole (34) and/or the second air hole (35).

4. The pneumatic motor according to claim 1, wherein two rollers (52) are arranged on each paddle lever (5), the two rollers (52) are arranged at intervals along the length direction of the paddle lever (5), and the two rollers (52) are respectively arranged on the upper side surface and the lower side surface of the inclined rail (4).

5. An air motor according to claim 4, wherein two axles (51) for mounting the rollers (52) are provided on each paddle lever (5), the axles (51) being arranged perpendicular to the paddle lever (5), and the two axles (51) being spaced apart in the length direction of the paddle lever (5).

6. Pneumatic motor according to claim 5, characterised in that a slider (54) of the same width as the slide (26) is also provided on the paddle lever (5), the axle (51) being fixed to the slider (54).

7. The pneumatic motor according to claim 4, wherein the ramp (4) is wrapped around a rail (41) and a rim (42), the rail (41) is fixed to the inner side of the rim (42), the rail (41) is arranged in parallel with the air flow groove (33), and the two rollers (52) are respectively located on the upper and lower sides of the rail (41).

8. An air motor according to claim 7, characterized in that the ramp (4) is provided with a notch for fitting and a patch (43) cooperating with the notch, the patch (43) being intended to fill the notch so that the ramp (4) has a continuous track (41).

9. The pneumatic motor according to claim 1, wherein a mounting hole (14) is provided at an end of the frame (1) where the first shaft hole (11) is provided, so that the paddle lever (5) is passed from the mounting hole (14) into the connecting column (24) when the paddle lever (5) is mounted.

10. The pneumatic motor according to claim 1, wherein a plurality of the penetration holes (25) are evenly distributed along a circumferential direction of the output shaft (23).

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