Piston pneumatic motor

Abstract

This invention discloses a piston-type pneumatic motor, comprising: a support; a plunger cylinder body having multiple plunger bores extending in the front-rear direction; a distributor seat rotatably connected to the rear side of the plunger cylinder body, with an inlet and an outlet port on its front side; a rotating cylinder body located in front of the plunger cylinder body, the angle between the rotation axis of the rotating cylinder body and the rotation axis of the plunger cylinder body being an obtuse or right angle, and the rotating cylinder body having multiple rotating bores; and multiple plungers, the rear ends of all plungers being slidably disposed in the multiple plunger bores, and the front end of each plunger having a piston, all pistons being slidably disposed in all the rotating bores. In this piston-type pneumatic motor, the forward movement of the plunger pushes the piston, causing the rotating cylinder body to rotate around its axis. The rotating cylinder body drives external components to perform rotary motion, eliminating the need for a swashplate and helping to reduce manufacturing costs. This invention can be applied in the field of pneumatic motors.

Description

Technical Field

[0001] This invention relates to the field of pneumatic motors, and particularly to piston-type pneumatic motors. Background Technology

[0002] A pneumatic motor, also known as a wind-driven motor, is a device that converts the pressure energy of compressed air into rotational mechanical energy. A piston-type pneumatic motor is a type of pneumatic motor that uses a crank or swashplate to convert the linear motion of several pistons into rotary motion.

[0003] When a piston-type pneumatic motor operates, the piston pushes a swashplate, which rotates around its axis. Because the swashplate converts the linear motion of the piston into rotary motion, the manufacturing precision requirements for the swashplate are high, which greatly increases the manufacturing cost of the piston-type pneumatic motor. Summary of the Invention

[0004] The purpose of this invention is to provide a piston-type pneumatic motor to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0006] A piston-type pneumatic motor, comprising:

[0007] Support;

[0008] A plunger cylinder body is rotatably connected to the support, with the rotation axis of the plunger cylinder body as the relative front-back direction. The plunger cylinder body is provided with a plurality of plunger cylinder holes that extend in the front-back direction, and all the plunger cylinder holes are distributed at intervals around the rotation axis of the plunger cylinder body.

[0009] A distributor seat is rotatably connected to the rear side of the plunger cylinder body. The front side of the distributor seat is provided with an air inlet and an air outlet, which are spaced apart around the rotation axis of the plunger cylinder body.

[0010] A rotating cylinder body is rotatably connected to the support. The rotating cylinder body is located in front of the plunger cylinder body. The angle between the rotation axis of the rotating cylinder body and the rotation axis of the plunger cylinder body is an obtuse angle or a right angle. The rotating cylinder body is provided with multiple rotating cylinder holes, and all the rotating cylinder holes are distributed at intervals around the rotation axis of the rotating cylinder body.

[0011] Multiple plungers are provided, with the rear ends of all plungers slidably disposed in the multiple plunger cylinder bores, and the front end of each plunger is provided with a piston, which is bent toward the rotating cylinder body. All pistons are slidably disposed in all the rotating cylinder bores.

[0012] The beneficial effects of this invention are as follows: The plunger cylinder body is provided with multiple plunger cylinder holes that extend in the front-to-back direction. The plunger is slidably disposed in the plunger cylinder holes. The air inlet of the distributor seat fills gas into a portion of the plunger cylinder holes, while the gas in the other portion of the plunger cylinder holes is discharged from the air outlet. In the plunger cylinder holes connected to the air inlet, the gas pushes the plunger forward. The front end of the plunger is connected to the rear end of the piston, which drives the piston forward. The angle between the rotation axis of the rotating cylinder body and the rotation axis of the plunger cylinder body is an obtuse angle or a right angle. The forward movement of the plunger pushes the piston, which drives the rotating cylinder body to rotate around the axis. The rotating cylinder body drives the external device to rotate. The rotation of the piston and the rotating cylinder body, in turn, drives the plunger and the plunger cylinder body to rotate around the axis, causing the plunger cylinder hole to move to the air outlet, allowing the gas in the plunger cylinder hole to be discharged, causing the plunger to move backward, thus linking the plunger and the piston. The piston-type pneumatic motor eliminates the need for a swashplate, which helps to reduce manufacturing costs.

[0013] As a further improvement to the above technical solution, each of the plungers is provided with a first through hole extending along the axial direction, and each of the pistons is provided with a second through hole extending along the axial direction, with all the first through holes and all the second through holes corresponding to each other and communicating one-to-one.

[0014] The first through hole of the plunger is connected to the second through hole of the piston, so that the plunger cylinder bore is connected to the rotary cylinder bore. When the distributor seat fills the plunger cylinder bore with gas, the gas flows into the rotary cylinder bore. The gas in the plunger cylinder bore pushes the plunger forward and the gas in the rotary cylinder bore pushes the piston backward, which helps to make the rotation of the rotary cylinder body and the rotation of the plunger cylinder body more stable.

[0015] As a further improvement to the above technical solution, the rear end of the piston and the front end of the plunger are integrated, and the rear end of the piston and the front end of the plunger are provided with reinforcing blocks, which wrap around the rear end of the piston and the front end of the plunger.

[0016] Since the plunger drives the piston to move, and the piston drives the rotating cylinder to rotate, and since the first through hole makes the plunger hollow and the second through hole makes the piston hollow, the strength of the connection between the plunger and the piston is reduced. The reinforcing block includes the rear end of the piston and the front end of the plunger, which helps to improve the strength of the connection between the plunger and the piston and prevent the connection between the plunger and the piston from breaking.

[0017] As a further improvement to the above technical solution, the rotation axis of the rotating cylinder is perpendicular to the rotation axis of the plunger cylinder.

[0018] The rotation axis of the rotary cylinder is perpendicular to the rotation axis of the piston cylinder. The thrust of the piston's linear motion is completely converted into the power of the piston rotating around the rotary cylinder, which increases the torque of the rotary cylinder.

[0019] As a further improvement to the above technical solution, the plunger cylinder body and the rotating cylinder body are distributed in a mirror-symmetrical manner.

[0020] The rotating cylinder and the plunger cylinder are arranged in a mirror symmetrical configuration, which helps to balance the vibration of the plunger cylinder and the rotating cylinder during movement.

[0021] As a further improvement to the above technical solution, the number of plunger cylinder bores is an even number, and the number of rotary cylinder bores is the same as the number of plunger cylinder bores.

[0022] The number of rotary cylinder bores and plunger cylinder bores is even. When an even number of plungers and pistons move, it helps to reduce the imbalance in the rotation of the plunger cylinder and rotary cylinder, making the rotation of the plunger cylinder and rotary cylinder more stable.

[0023] As a further improvement to the above technical solution, the support is provided with a baffle, the baffle is located behind the distribution seat, the rear side wall of the distribution seat is provided with an assembly hole, the distribution seat is provided with an air intake channel and a slider, the air intake channel is connected to the assembly hole, the slider is slidably disposed in the assembly hole, and the outer side wall of the slider is sealed to the inner side wall of the assembly hole.

[0024] Gas is introduced into the assembly hole through the air intake channel of the distributor seat, causing the slider to slide backward along the assembly hole and press against the front side wall of the baffle. This makes the front side wall of the distributor seat fit more tightly with the rear side wall of the plunger cylinder, which helps to seal the front side wall of the distributor seat with the rear side wall of the plunger cylinder.

[0025] As a further improvement to the above technical solution, the air inlet is connected to the air intake channel.

[0026] When the air inlet is connected to the air intake channel, the air intake channel supplies gas to the air inlet and the assembly hole. This means that the air pressure in the air inlet is the same as the air pressure in the assembly hole. The pressure of the slider against the baffle changes with the air pressure supplied by the air intake channel, which helps to save gas.

[0027] As a further improvement to the above technical solution, the support has an internal accommodating space, in which the plunger cylinder, all the plungers, the distributor seat, the rotating cylinder, and all the pistons are disposed.

[0028] Placing the plunger cylinder body, all plungers, distributor seat, rotating cylinder body, and all pistons within the support's receiving space helps protect the transmission mechanism.

[0029] As a further improvement to the above technical solution, the rotation axis of the plunger cylinder is arranged in the horizontal direction, the plunger cylinder is located at the bottom of the accommodating space, the piston-type pneumatic motor also includes a first rolling bearing, the inner ring of the first rolling bearing is sleeved on the outside of the plunger cylinder, the outer ring of the first rolling bearing is connected to the inner wall of the accommodating space, and the bottom of the accommodating space is filled with a lubricating medium.

[0030] The first rolling bearing is sleeved on the outside of the plunger cylinder body, which is located at the bottom of the receiving space. The bottom of the receiving space is filled with lubricating medium to make the rotation of the first rolling bearing smoother and to avoid the rotation of the plunger cylinder body being hindered and losing power. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0032] Figure 1 This is a schematic diagram of an embodiment of the piston-type pneumatic motor provided by the present invention.

[0033] Figure 2 This is an exploded schematic diagram of an embodiment of the piston-type pneumatic motor provided by the present invention.

[0034] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the piston-type pneumatic motor provided by the present invention.

[0035] Figure 4 This is a cross-sectional schematic diagram of the piston-type pneumatic motor provided by the present invention, showing the piston cylinder and the rotary cylinder in one embodiment.

[0036] Figure 5 This is a front view of the distributor seat in one embodiment of the piston-type pneumatic motor provided by the present invention.

[0037] Figure 6 This is a cross-sectional schematic diagram of the slider in one embodiment of the piston-type pneumatic motor provided by the present invention.

[0038] 100, Support; 101, Front; 1011, Front Chamber; 1012, Raised Strip; 102, Rear; 1021, Rear Chamber; 110, Baffle; 120, Accommodation Space; 121, First Rolling Bearing; 122, Second Rolling Bearing; 123, Opening; 130, Top Cover; 131, Limiting Hole; 200, Plunger Cylinder Body; 210, Plunger Cylinder Bore; 300, Distributor Seat; 310, Inlet Hole; 320, Outlet Hole; 330, Assembly Hole; 340, Inlet Passage; 350, Slider; 400, Rotating Cylinder Body; 410, Rotating Cylinder Bore; 500, Plunger; 501, First Through Hole; 502, First Sliding Bearing; 510, Piston; 511, Second Through Hole; 512, Second Sliding Bearing; 520, Reinforcing Block. Detailed Implementation

[0039] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0041] In the description of this invention, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0042] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0043] Reference Figures 1 to 6 The piston-type pneumatic motor of the present invention is provided in the following embodiments:

[0044] The piston-type pneumatic motor includes a support 100, a top cover 130, a plunger cylinder 200, a distributor seat 300, a rotary cylinder 400, a plunger 500, and a piston 510.

[0045] The support 100 includes a front part 101 and a rear part 102 arranged front to back. The front part 101 has a front chamber 1011 inside, and its top is open. A through front connecting hole is provided on the rear side of the front part 101. A protrusion 1012 is provided on the rear side wall of the front part 101, and the protrusion 1012 is arranged around the outer periphery of the front connecting hole, that is, the protrusion 1012 is arranged around the outer periphery of the front chamber 1011. The rear part 102 has a rear chamber 1021 inside, and a through rear connecting hole is provided on the front side of the rear part 102. The diameter of the front connecting hole is smaller than the diameter of the rear connecting hole. The front connecting hole and the rear connecting hole are directly opposite each other. The shape of the protrusion 1012 matches the shape of the rear connecting hole. The rear side wall of the front part 101 abuts against the front side wall of the rear part 102. The protrusion 1012 is inserted into the rear connecting hole so that the outer side wall of the protrusion 1012 abuts against the inner side wall of the rear chamber 1021. The front part 101 and the rear part 102 are connected by screws passing through them. The bottom wall of the front chamber 1011 is higher than the bottom wall of the rear chamber 1021. The front chamber 1011 and the rear chamber 1021 communicate to form a receiving space 120. The top of the receiving space 120 is provided with an opening 123, which is located at the top of the front part 101.

[0046] The rear side wall of the front part 101 is provided with a protrusion 1012. The protrusion 1012 surrounds the outer periphery of the front chamber 1011. The protrusion 1012 is inserted into the rear chamber 1021 and abuts against the inner wall of the rear chamber 1021, so that a sealing structure is formed between the front part 101 and the rear part 102, preventing the lubricating medium from leaking out from the gap between the front part 101 and the rear part 102.

[0047] The top cover 130 is connected to the top of the front part 101 and the rear part 102 by screws. The top cover 130 covers the opening 123 and has a through limiting hole 131 located directly above the opening 123.

[0048] The plunger cylinder body 200, the distributor seat 300, the rotating cylinder body 400, the plunger 500, and the piston 510 are all disposed in the receiving space 120. The plunger cylinder body 200 and the distributor seat 300 are located in the rear chamber 1021, and the rotating cylinder body 400 is located in the front chamber 1011. The angle between the rotation axis of the plunger cylinder body 200 and the rotation axis of the rotating cylinder body 400 is an obtuse angle or a right angle. In this embodiment, the rotation axis of the plunger cylinder body 200 is perpendicular to the rotation axis of the rotating cylinder body 400. The outer ring of the first rolling bearing 121 is connected to the inner wall of the rear chamber 1021, and the inner ring of the first rolling bearing 121 is sleeved on the outside of the plunger cylinder body 200. The axis of the first rolling bearing 121 extends horizontally back and forth, allowing the plunger cylinder body 200 to rotate around the horizontal axis. There are two first rolling bearings 121, spaced apart one after the other. All first rolling bearings 121 together support the plunger cylinder 200, facilitating smoother rotation of the plunger cylinder 200. The rotating cylinder 400 extends through the opening 123 of the receiving space 120 into the limiting hole 131 of the top cover 130. The outer ring of the second rolling bearing 122 is connected to the inner wall of the limiting hole 131, and the inner ring of the second rolling bearing 122 is fitted onto the outside of the rotating cylinder 400. The axis of the second rolling bearing 122 extends vertically, allowing the rotating cylinder 400 to rotate around a vertical axis, and the rotation axis of the plunger cylinder 200 is perpendicular to the rotation axis of the rotating cylinder 400. There are two second rolling bearings 122, spaced apart one after the other. The space between the inner wall of the limiting hole 131 and the outer wall of the rotating cylinder 400 is closed by the second rolling bearing 122, which prevents the lubricating medium from leaking out of the limiting hole 131, and makes the rotating cylinder 400 rotate more smoothly relative to the top cover 130.

[0049] The support 100 is detachably connected to a front part 101 and a rear part 102. The front chamber 1011 of the front part 101 and the rear chamber 1021 of the rear part 102 form a receiving space 120. The opening 123 is located at the top of the front chamber 1011. The rotating cylinder 400 is disposed in the front chamber 1011 and the plunger cylinder 200 is disposed in the rear chamber 1021. After separating the front part 101 and the rear part 102, it is convenient to disassemble the plunger cylinder 200 and the rotating cylinder 400, which is helpful for the maintenance of the plunger cylinder 200 and the rotating cylinder 400.

[0050] The baffle 110 is the rear sidewall of the rear chamber 1021. There is a space between the front sidewall of the baffle 110 and the rear sidewall of the plunger cylinder 200. The distributor seat 300 is disposed between the baffle 110 and the plunger cylinder 200. The front side of the distributor seat 300 is rotatably connected to the rear side of the plunger cylinder 200.

[0051] The plunger cylinder body 200 and the rotary cylinder body 400 are mirror-symmetrically distributed in the receiving space 120. The plunger cylinder body 200 has six horizontally penetrating plunger bores 210, evenly spaced around the rotation axis of the plunger cylinder body 200, with the axis of each plunger bore 210 parallel to the rotation axis of the plunger cylinder body 200. The rotary cylinder body 400 has six vertically extending rotary bores 410, evenly spaced around the rotation axis of the rotary cylinder body 400, with the axis of each rotary bore 410 parallel to the rotation axis of the rotary cylinder body 400. The distance between the axis of each rotary bore 410 and the rotation axis of the rotary cylinder body 400 is equal to the distance between the axis of each plunger bore 210 and the rotation axis of the plunger cylinder body 200.

[0052] Six plungers 500 are slidably disposed in plunger cylinder bores 210, one-to-one. Each plunger 500 slides in the front-rear direction. A piston 510 is located at the front end of each plunger 500, and the piston 510 bends towards the rotating cylinder body 400, perpendicular to the plunger 500. Each plunger 500 has a first through hole 501 extending along its axis, and each piston 510 has a second through hole 511 extending along its axis. The first through hole 501 and the second through hole 511 communicate, thus connecting the plunger cylinder bore 210 with the rotating cylinder bore 410. A reinforcing block 520 is provided at the connection between the plunger 500 and the piston 510, wrapping around the front end of the plunger 500 and the rear end of the piston 510. Gas is sequentially introduced into each plunger bore 210. The gas flows through the plunger bore 210 into the first through hole 501 of the plunger 500 and the second through hole 511 of the piston 510, filling the plunger bore 210 and the rotary bore 410. As gas continuously enters, the gas in the plunger bore 210 pushes the plunger 500 forward, and the gas in the rotary bore 410 pushes the piston 510 away from the rotary cylinder body 400, causing all plungers 500 and pistons 510 to move sequentially. Both the rotary cylinder body 400 and the plunger cylinder body 200 are rotatably connected to the support 100. Multiple plunger bores 210 are spaced apart around the rotation axis of the plunger cylinder body 200, and multiple rotating bores 410 are spaced apart around the rotation axis of the rotating cylinder body 400. All plungers 500 and pistons 510 move sequentially to rotate the plunger cylinder body 200 and the rotating cylinder body 400, thereby converting the linear motion of the plungers 500 and pistons 510 into the rotational motion of the plunger cylinder body 200 and the rotating cylinder body 400. Furthermore, since gas pushes the plunger 500 from the plunger bores 210 and the piston 510 from the rotating bores 410, it helps to improve the output power of the rotational motion.

[0053] The length of each plunger bore 210 is equal to the length of each rotary bore 410, and the length of each plunger 500 is equal to the length of each piston 510. The structure of each plunger 500 is mirror-symmetrical to the structure of each piston 510. The equal length of the plunger bore 210 and the rotary bore 410 means that the distance the gas in the plunger bore 210 pushes the plunger 500 to move is equal to the distance the gas in the rotary bore 410 pushes the piston 510 to move. This makes the movement of the plunger 500 and the piston 510 more coordinated, avoiding mutual obstruction and reducing vibration and noise caused by their movement. Since the structure of the plunger 500 is the same as that of the piston 510, their weights are the same, further contributing to more coordinated movement and reducing vibration and noise.

[0054] Each plunger 500 is externally fitted with a first sliding bearing 502, the outer wall of which abuts against the inner wall of the plunger cylinder bore 210. Each piston 510 is externally fitted with a second sliding bearing 512, the outer wall of which abuts against the inner wall of the rotating cylinder bore 410. The first sliding bearing 502 facilitates smoother sliding of the plunger 500 within the plunger cylinder bore 210, reducing frictional resistance between the plunger 500 and the plunger cylinder bore 210. The second sliding bearing 512 facilitates smoother sliding of the piston 510 within the rotating cylinder bore 410, reducing frictional resistance between the piston 510 and the rotating cylinder bore 410. This contributes to increasing the output power of the plunger cylinder body 200 and the rotating cylinder body 400.

[0055] The front sidewall of the distributor 300 is provided with an inlet hole 310 and an outlet hole 320, both of which are arc-shaped holes. The inlet hole 310 and the outlet hole 320 are symmetrically distributed around the rotation axis of the plunger cylinder 200. The top of the distributor 300 is provided with an inlet channel 340 and an outlet channel extending in the vertical direction. The inlet channel 340 connects to the inlet hole 310, and the outlet channel connects to the outlet hole 320. The front sidewall of the distributor 300 is attached to the rear sidewall of the plunger cylinder 200, and the rotation trajectory of each plunger cylinder bore 210 coincides with the inlet hole 310 and the outlet hole 320. The front sidewall of the distributor 300 is provided with a first groove 311 and a second groove 321. The first groove 311 surrounds the outer periphery of the air inlet 310, and the second groove 321 surrounds the outer periphery of the air outlet 320. A first sealing ring is disposed in the first groove 311, and a second sealing ring is disposed in the second groove 321. The first sealing ring is pressed between the rear sidewall of the first groove 311 and the rear sidewall of the plunger cylinder 200, and the second sealing ring is pressed between the rear sidewall of the second groove 321 and the rear sidewall of the plunger cylinder 200, so that the outer periphery of the air inlet 310 is sealed with the rear sidewall of the plunger cylinder 200, and the outer periphery of the air outlet 320 is sealed with the rear sidewall of the plunger cylinder 200.

[0056] The rear side wall of the distributor 300 is provided with a connecting post 360, which extends rearward. The baffle 110 is provided with a connecting hole 111 that runs through the front and rear directions. The position of the connecting hole 111 corresponds to the position of the connecting post 360. The connecting post 360 is inserted into the connecting hole 111 to fix the relative positions of the distributor 300 and the baffle 110.

[0057] The rear sidewall of the distributor 300 has a mounting hole 330 that extends rearward. The front sidewall of the mounting hole 330 has an air intake groove 331 that extends upward and connects to the air intake channel 340, thus connecting the mounting hole 330 and the air intake channel 340. A slider 350 is slidably disposed in the mounting hole 330. The rear sidewall of the slider 350 has a rearwardly extending protrusion 351, which has a hemispherical structure. The outer sidewall of the slider 350 has a sealing ring 370 that seals the outer sidewall of the slider 350 with the inner sidewall of the mounting hole 330. The front side of the sealing ring 370 has an annular groove 371, which has a tapered structure that is larger at the front and smaller at the back. Gas is introduced into the mounting hole 330 through the intake channel 340 via the intake groove 331. The gas pushes the slider 350 to move backward and extend behind the mounting hole 330. The protrusion 351 of the slider 350 abuts against the front sidewall of the baffle 110, causing the gas in the mounting hole 330 to push the distributor seat 300 and the slider 350 away from each other. The front sidewall of the distributor seat 300 then moves forward and presses against the rear sidewall of the plunger cylinder 200. The rearwardly extending protrusion 351 helps to shorten the rearward movement distance of the slider 350 and reduce the volume of the slider 350, thereby reducing its weight and making the movement of the slider 350 driven by the gas smoother. The annular groove 371 has a tapered cross-section that is larger at the front and smaller at the back. Gas enters the annular groove 371 from front to back, causing the front side of the annular groove 371 to expand outward by a greater distance than the rear side of the annular groove 371. This helps the outer wall of the front side of the annular groove 371 to fit tightly against the inner wall of the assembly hole 330, thus improving the sealing effect.

[0058] When the plunger cylinder 200 needs to stop rotating, the gas supply to the intake passage 340 is stopped, and the gas in the assembly hole 330 is discharged through the intake passage 340, thereby causing the slider 350 to separate from the baffle 110. A gap then appears between the front side wall of the distributor seat 300 and the rear side of the plunger cylinder 200, allowing all the gas in the plunger cylinder bore 210 to flow out through the gap. This allows the plunger cylinder 200 to stop rotating in a shorter time, thus shortening the response time of the pneumatic motor.

[0059] The lubricating medium is filled in the receiving space 120. Since the plunger cylinder 200, plunger 500, rotary cylinder 400 and piston 510 are all located in the receiving space 120, the lubricating medium is stored in the receiving space 120. When it is necessary to replenish or replace the lubricating medium, the top cover 130 is removed from the top of the support 100 to open the opening 123. The lubricating medium is added or replenished through the opening 123. After the replacement or replenishment is completed, the top cover 130 is reinstalled on the top of the support 100, which helps to store the lubricating medium.

[0060] Since the bottom wall of the rear chamber 1021 is lower than the bottom wall of the front chamber 1011, the lubricating medium flows into the rear chamber 1021. The lubricating medium can be a liquid lubricating substance such as lubricating oil or grease, which helps the plunger cylinder 200 to be in a lubricating medium-immersed environment, ensuring that the rotation of the plunger cylinder 200 is smoother, reducing power loss, and ensuring that the lubricating medium can wet the first rolling bearing 121, making the relative rotation of the inner and outer rings of the first rolling bearing 121 smoother.

[0061] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A piston-type pneumatic motor, characterized in that: include: Support; A plunger cylinder body is rotatably connected to the support, with the rotation axis of the plunger cylinder body as the relative front-back direction. The plunger cylinder body is provided with a plurality of plunger cylinder holes that extend in the front-back direction, and all the plunger cylinder holes are distributed at intervals around the rotation axis of the plunger cylinder body. A distributor seat is rotatably connected to the rear side of the plunger cylinder body. The front side of the distributor seat is provided with an air inlet and an air outlet, which are spaced apart around the rotation axis of the plunger cylinder body. A rotating cylinder body is rotatably connected to the support. The rotating cylinder body is located in front of the plunger cylinder body. The angle between the rotation axis of the rotating cylinder body and the rotation axis of the plunger cylinder body is an obtuse angle or a right angle. The rotating cylinder body is provided with multiple rotating cylinder holes, and all the rotating cylinder holes are distributed at intervals around the rotation axis of the rotating cylinder body. Multiple plungers, the rear ends of all the plungers are slidably disposed in the multiple plunger cylinder bores, and the front end of each plunger is provided with a piston, the piston is bent toward the rotating cylinder body, and all the pistons are slidably disposed in all the rotating cylinder bores. Each of the plungers is provided with a first through hole extending along the axial direction, and each of the pistons is provided with a second through hole extending along the axial direction. All the first through holes and all the second through holes are connected in a one-to-one correspondence. The support is provided with a baffle, which is located behind the distribution seat. The rear side wall of the distribution seat is provided with an assembly hole. The distribution seat is provided with an air intake channel and a slider. The air intake channel communicates with the assembly hole. The slider is slidably disposed in the assembly hole. The outer side wall of the slider is sealed to the inner side wall of the assembly hole. Gas is sequentially introduced into each of the plunger cylinder bores. The gas flows through the plunger cylinder bores into the first through hole and the second through hole, so that the gas fills the plunger cylinder bores and the rotating cylinder bores. The gas in the plunger cylinder bores pushes the plunger forward, and the gas in the rotating cylinder bores pushes the piston away from the rotating cylinder body.

2. The piston-type pneumatic motor according to claim 1, characterized in that: The rear end of the piston is integrated with the front end of the plunger, and the rear end of the piston and the front end of the plunger are provided with reinforcing blocks, which wrap around the rear end of the piston and the front end of the plunger.

3. The piston-type pneumatic motor according to claim 1, characterized in that: The rotation axis of the rotating cylinder is perpendicular to the rotation axis of the plunger cylinder.

4. The piston-type pneumatic motor according to claim 3, characterized in that: The plunger cylinder and the rotating cylinder are distributed in a mirror-symmetrical manner.

5. The piston-type pneumatic motor according to claim 4, characterized in that: The number of plunger cylinder bores is an even number, and the number of rotary cylinder bores is the same as the number of plunger cylinder bores.

6. The piston-type pneumatic motor according to claim 1, characterized in that: The air inlet is connected to the air intake channel.

7. The piston-type pneumatic motor according to claim 1, characterized in that: The support has an internal accommodating space, in which the plunger cylinder, all the plungers, the distributor seat, the rotating cylinder, and all the pistons are disposed.

8. The piston-type pneumatic motor according to claim 7, characterized in that: The rotation axis of the plunger cylinder is set in the horizontal direction. The plunger cylinder is located at the bottom of the receiving space. The piston-type pneumatic motor also includes a first rolling bearing. The inner ring of the first rolling bearing is sleeved on the outside of the plunger cylinder. The outer ring of the first rolling bearing is connected to the inner wall of the receiving space. The bottom of the receiving space is filled with a lubricating medium.

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