Crankshaft-free piston type rotary cylinder pneumatic motor

Abstract

An air distribution copper sleeve is movably arranged outside an air distribution valve element, deep groove ball bearings are further arranged outside the air distribution valve element and located on the two sides of the air distribution copper sleeve, the outer end of the air distribution copper sleeve is connected with a cylinder body, a left cover plate is arranged at one end of the cylinder body, and a right cover plate is arranged at the other end of the cylinder body. The cylinder body is arranged in the curved-surface shell, the cylinder body is provided with a plurality of pistons, the outer ends of the pistons are provided with rollers, the rollers are in rolling fit with the arc-shaped surface of the curved-surface shell, one end of the curved-surface shell is provided with a front cover plate, the other end of the curved-surface shell is provided with a rear cover plate, and the left cover plate is connected with the output flange shaft. Rotation power is generated by extruding the arc surfaces through the rollers, the obtained torque is greatly improved, the design is unique and reasonable, no crankshaft balancing weight is designed, the advantages of being compact in structure, free of vibration, stable in torsion output and light in weight are achieved, compared with a traditional piston plate structure, the gas consumption is greatly reduced, the friction coefficient is low, and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic motors, in particular to a crankshaft-free piston type rotary cylinder pneumatic motor. Background Art

[0002] Pneumatic motors, also known as air motors, are devices that convert the pressure energy of compressed air into rotational mechanical energy. They are generally used as a rotational power source for more complex devices or machines. Pneumatic motors are currently classified by structure into: vane pneumatic motors, piston pneumatic motors, compact vane pneumatic motors, and compact piston pneumatic motors.

[0003] Traditional vane-type pneumatic motors are prone to friction loss and high gas consumption. Traditional piston-type pneumatic motors are mostly designed with a crankshaft plus a balance block counterweight, which causes vibration and jitter, and are heavy and large in size. The above problems greatly reduce their service life. Therefore, an improved technology is urgently needed to solve this problem in the existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide a crankshaftless piston rotary cylinder pneumatic motor with a crankshaft counterweight design, stable operation, and no vibration or jitter. It solves the problem of easy wear of blades in traditional vane motors and the problem of vibration of piston motors, thereby greatly improving the service life. It has a compact structure, small size, light weight, large output torque, and greatly reduced gas consumption, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crankshaft-free piston rotary cylinder pneumatic motor, comprising a cylinder body, a gas distribution valve core, a gas distribution copper sleeve, a deep groove ball bearing, a left cover plate, a right cover plate, a curved shell, a front cover plate, a rear cover plate and an output flange shaft, the gas distribution valve core is provided with a gas distribution copper sleeve on the outside, deep groove ball bearings are also provided on the outside of the gas distribution valve core and on both sides of the gas distribution copper sleeve, the outer end of the gas distribution copper sleeve is connected to the cylinder body, the cylinder body cooperates with the outer ring of the deep groove ball bearing, a left cover plate is provided at one end of the cylinder body, a right cover plate is provided at the other end of the cylinder body, the cylinder body is arranged inside the curved shell, a front cover plate is provided at one end of the curved shell, a rear cover plate is provided at the other end of the curved shell, and the left cover plate is connected to the output flange shaft;

[0006] The air distribution valve core is provided with a first air inlet and outlet and a second air inlet and outlet, the air distribution valve core is provided with a first five-way air passage and a second five-way air passage in a radial direction, the first five-way air passage and the second five-way air passage are staggered with each other and located at two cross sections of the air distribution valve core, the first five-way air passage and the second five-way air passage are staggered with each other in the axial direction of the air distribution valve core, the first five-way air passage is communicated with the first air inlet and outlet, the second five-way air passage is communicated with the second air inlet and outlet, and ten air distribution grooves are evenly and equidistantly provided on the periphery of the air distribution valve core, and the air distribution grooves are communicated with the first five-way air passage and the second five-way air passage respectively;

[0007] The gas distribution copper sleeve is provided with twelve gas distribution holes in the radial direction;

[0008] The cylinder body is provided with twelve piston holes along the radial direction, wherein the axes of six of the piston holes are located in one plane, and the axes of the other six of the piston holes are located in one plane, the piston holes correspond to the gas distribution holes of the gas distribution copper sleeve one by one and are connected to each other, a piston is arranged in each of the piston holes, and a roller is arranged at the outer end of the piston through a pin shaft;

[0009] The inner wall of the curved outer shell is provided with five arc surfaces, each of which corresponds to two gas distribution grooves. The roller at the outer end of the piston is supported on the inner wall of the curved outer shell and rolls with the inner wall of the outer shell.

[0010] Preferably, the utility model provides a crankshaftless piston rotary cylinder pneumatic motor, wherein a pressure plate is provided at one end of the gas distribution valve core close to the output flange shaft, and the outer edge of the pressure plate is pressed on the outer end of a corresponding deep groove ball bearing.

[0011] Preferably, the utility model provides a crankshaftless piston rotary cylinder pneumatic motor, wherein the output flange shaft includes an output shaft body and a flange body, a flange body is provided at one end of the output shaft body, the output shaft body passes through the center position of the front cover plate, and a key groove is also provided on one side of the output shaft body.

[0012] Preferably, the utility model provides a crankshaftless piston rotary cylinder pneumatic motor, wherein the periphery of the rear cover plate is connected to the curved outer shell by bolts, and the rear cover plate is also connected to the gas distribution valve core by bolts.

[0013] Preferably, the utility model provides a crankshaftless piston rotary cylinder pneumatic motor, wherein the rear cover plate is provided with a through groove, and the through groove of the rear cover plate corresponds to the first air inlet and outlet and the second air inlet and outlet of the air distribution valve core.

[0014] Preferably, the utility model provides a crankshaftless piston rotary cylinder pneumatic motor, wherein positioning grooves are provided on the outer side of the gas distribution copper sleeve and the inner side of the cylinder body, and the positioning grooves of the gas distribution copper sleeve and the cylinder body correspond to each other and cooperate with each other through pins.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] By using rollers to squeeze the arc surface to generate rotating power, the torque is greatly improved. The design is unique and reasonable, and there is no crankshaft counterweight design. It has the advantages of compact structure, no vibration, stable torque output and light weight. Compared with the traditional piston plate structure, the gas consumption is greatly reduced, the friction coefficient is low, and the service life is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the longitudinal section structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the piston distribution of the utility model;

[0021] Figure 5 It is a schematic diagram of the cylinder structure;

[0022] Figure 6 It is a schematic diagram of the cross-section structure of the cylinder body;

[0023] Figure 7 It is a schematic diagram of the cylinder body side structure;

[0024] Figure 8 This is a schematic diagram of the gas distribution valve core structure;

[0025] Fig. 9 This is a schematic diagram of the side structure of the gas distribution valve core;

[0026] Fig.10 For attachment Fig. 9 Schematic diagram of the cross-section structure at AA in the middle;

[0027] Fig.11 For attachment Fig. 9 Schematic diagram of the cross-section structure at BB in the middle;

[0028] Fig.12 This is a schematic diagram of the structure of the gas distribution copper sleeve;

[0029] Fig.13 It is a schematic diagram of the curved shell structure;

[0030] Fig.14 It is a schematic diagram of the rear cover structure;

[0031] Fig.15 Schematic diagram of piston structure;

[0032] Fig.16 This is a schematic diagram of the output flange shaft structure.

[0033] In the figure: cylinder body 1, gas distribution valve core 2, gas distribution copper sleeve 3, deep groove ball bearing 4, left cover plate 5, right cover plate 6, curved shell 7, front cover plate 8, rear cover plate 9, output flange shaft 10, first air inlet and outlet 11, second air inlet and outlet 12, first five-way air passage 13, second five-way air passage 14, gas distribution groove 15, gas distribution hole 16, piston hole 17, piston 18, roller 19, arc surface 20, pressure plate 21, through groove 22, positioning groove 23, output shaft body 1001, flange body 1002, keyway 1003. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model;

[0035] It should be noted that, in the description of the present invention, the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left" and "right" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] See also Figure 1-15The utility model provides a technical solution: a crankshaft-free piston rotary cylinder pneumatic motor, including a cylinder body 1, a gas distribution valve core 2, a gas distribution copper sleeve 3, a deep groove ball bearing 4, a left cover plate 5, a right cover plate 6, a curved shell 7, a front cover plate 8, a rear cover plate 9 and an output flange shaft 10. The gas distribution copper sleeve 3 is movably arranged outside the gas distribution valve core 2, and deep groove ball bearings 4 are also arranged outside the gas distribution valve core 2 and on both sides of the gas distribution copper sleeve 3. The outer end of the gas distribution copper sleeve 3 is connected to the cylinder body 1, and the cylinder body 1 cooperates with the outer ring of the deep groove ball bearing 4. Positioning grooves 23 are opened on the outer side of the gas distribution copper sleeve 3 and the inner side of the cylinder body 1. The positioning grooves 23 of the gas distribution copper sleeve 3 and the cylinder body 1 correspond to each other and cooperate through pins to ensure that the gas distribution copper sleeve 3 and the cylinder body 1 are together Rotation, a left cover plate 5 is provided at one end of the cylinder body 1, a right cover plate 6 is provided at the other end of the cylinder body 1, the cylinder body 1 is arranged inside the curved shell 7, a front cover plate 8 is provided at one end of the curved shell 7, a rear cover plate 9 is provided at the other end of the curved shell 7, the left cover plate 5 is connected to the output flange shaft 10, a pressure plate 21 is provided at one end of the gas distribution valve core 2 close to the output flange shaft 10, the outer edge of the pressure plate 21 is pressed on the outer end of a corresponding deep groove ball bearing 4, and the deep groove ball bearing 4 is positioned by the pressure plate 21, the outer periphery of the rear cover plate 9 is connected to the curved shell 7 by bolts, the rear cover plate 9 is also connected to the gas distribution valve core 2 by bolts, and the rear cover plate 9 is respectively connected to the curved shell 7 and the gas distribution valve core 2, so as to ensure that the gas distribution valve core 2 does not rotate;

[0037] The valve core 2 is provided with a first air inlet and outlet 11 and a second air inlet and outlet 12, and the valve core 2 is provided with a first five-way air passage 13 and a second five-way air passage 14 in the radial direction. The first five-way air passage 13 and the second five-way air passage 14 are staggered with each other and located at two cross sections of the valve core 2. The first five-way air passage 13 and the second five-way air passage 14 are staggered with each other in the axial direction of the valve core 2. The first five-way air passage 13 is connected to the first air inlet and outlet 11, and the second five-way air passage 14 is connected to the first air inlet and outlet 11. The air distribution channel 14 is connected to the second air inlet and outlet 12, and ten air distribution grooves 15 are evenly and equidistantly provided on the periphery of the air distribution valve core 2, and the air distribution grooves 15 are respectively connected to the first five-air channel 13 and the second five-air channel 14, and the rear cover plate 9 is provided with a through groove 22, and the through groove 22 of the rear cover plate 9 corresponds to the first air inlet and outlet 11 and the second air inlet and outlet 12 of the air distribution valve core 2, and the through groove 22 is provided to ensure that the rear cover plate 9 does not affect the connection of the first air inlet and outlet 11 and the second air inlet and outlet 12;

[0038] The gas distribution copper sleeve 3 is provided with twelve gas distribution holes 16 along the radial direction;

[0039] The cylinder body 1 is provided with twelve piston holes 17 in the radial direction, wherein the axes of six piston holes 17 are located in one plane, and the axes of the other six piston holes 17 are located in one plane, and the piston holes 17 correspond to the gas distribution holes 16 of the gas distribution copper sleeve 3 one by one and are connected to each other, and a piston 18 is arranged in each piston hole 17, and a roller 19 is arranged at the outer end of the piston 18 through a pin shaft;

[0040] The inner wall of the curved outer shell 7 is provided with five arc surfaces 20, each arc surface 20 corresponds to two gas distribution grooves 15, and the roller 19 at the outer end of the piston 18 is supported on the inner wall of the curved outer shell 7 and rollingly matched with the inner wall of the outer shell.

[0041] like Fig.16 As shown, the output flange shaft 10 includes an output shaft body 1001 and a flange body 1002. The flange body 1002 is provided at one end of the output shaft body 1001. The output shaft body 1001 passes through the center position of the front cover plate 8. A key groove 1003 is also provided on one side of the output shaft body 1001. The flange body 1002 is used to connect with the left cover plate 5, so as to rotate together with the cylinder body 1, and the output shaft body 1001 is used to connect with an external rotating body.

[0042] Assembly method and principle of use: First, sleeve the air distribution copper sleeve 3 on the outside of the air distribution valve core 2, and make the air distribution holes 16 of the air distribution copper sleeve 3 correspond to the air distribution grooves 15 of the air distribution valve core 2 one by one. Then sleeve a deep groove ball bearing 4 on the end of the air distribution valve core 2 away from the first air inlet and outlet 11, and then install the pressure plate 21 on the corresponding end of the air distribution valve core 2 by bolts and press it on the corresponding deep groove ball bearing 4, then sleeve the cylinder body 1 on the outside of the air distribution copper sleeve 3, and make the positioning groove 23 of the cylinder body 1 correspond to the positioning groove 23 of the air distribution copper sleeve 3, and then insert the pin to make the air distribution copper sleeve 3 rotate with the cylinder body 1. Sleeve another deep groove ball bearing 4 on the air distribution valve core 2, at this time, the outer ends of the two deep groove ball bearings 4 match the cylinder body 1. Then, the roller 19 is installed on the outer end of the piston 18 through the pin, and the piston 18 is inserted into the piston hole 17 at the outer end of the cylinder body 1, and the left cover plate 5 is installed on one side of the cylinder body 1 through bolts, and the right cover plate 6 is installed on the other side of the cylinder body 1. The left cover plate 5 and the right cover plate 6 are respectively matched with two deep groove ball bearings 4, and then the flange body 1002 of the output flange shaft 10 is connected to the left cover plate 5 through bolts. Finally, the curved shell 7 is sleeved on the outside of the cylinder body 1, and each roller 19 is supported on the inner wall of the curved shell 7, the front cover plate 8 is connected to the front end of the curved shell 7 through bolts, and the output shaft body 1001 of the output flange shaft 10 passes through the front cover plate 8, and then the rear cover plate 9 is connected to the rear end of the curved shell 7 through bolts, and the rear cover plate 9 is connected to the valve core 2 through bolts to complete the assembly. When in use, the first air inlet and outlet 11 and the second air inlet and outlet 12 are connected to two air pipes respectively. When the first air inlet and outlet 11 is for intake, the second air inlet and outlet 12 is for exhaust. The compressed gas enters the corresponding air distribution hole 16 from the air distribution groove 15 through the first five-way air passage 13, and then enters the piston hole 17 through the air distribution hole 16 to push the piston 18 outward. The position of the first five-way air passage 13 is the front half of the arc surface 20 of the curved shell 7. The roller 19 runs along the arc surface 20 in the curved shell. The roller 19 squeezes the arc surface 20 of the curved shell to force the cylinder body 1 to make a circular motion around the motor axis. Since the cylinder body 1 is connected to the flange body 1002 of the output flange shaft 10, the output flange shaft 10 also makes a circular motion around the motor axis. The piston 18 located at the rear half of the arc surface 20 is recovered, and the gas in the piston hole 17 is exhausted through the second five-way air passage 14 and the second air inlet and outlet 12. When the second air inlet and outlet 12 is inletting air, the first air inlet and outlet 11 is outlet air, and the cylinder body 1 is reversed. The utility model is a piston-type rotary cylinder pneumatic motor, which uses a roller 19 to squeeze the arc surface 20 to generate a rotating power, and the torque is greatly improved. The design is unique and reasonable, and there is no crankshaft counterweight block design. It has the advantages of compact structure, no vibration, stable torque output and light weight. Compared with the traditional vane motor, the air consumption is greatly reduced, the friction coefficient is low, and the service life is greatly improved.

[0043] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0044] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A crankshaftless piston rotary cylinder pneumatic motor, characterized in that: The invention comprises a cylinder body (1), a gas distribution valve core (2), a gas distribution copper sleeve (3), a deep groove ball bearing (4), a left cover plate (5), a right cover plate (6), a curved shell (7), a front cover plate (8), a rear cover plate (9) and an output flange shaft (10), wherein the gas distribution copper sleeve (3) is movably arranged outside the gas distribution valve core (2), deep groove ball bearings (4) are arranged outside the gas distribution valve core (2) and on both sides of the gas distribution copper sleeve (3), and the outer end of the gas distribution copper sleeve (3) is connected to the outer end of the gas distribution copper sleeve (3). The cylinder body (1) is connected to the outer ring of the deep groove ball bearing (4), the cylinder body (1) is matched with the outer ring of the deep groove ball bearing (4), one end of the cylinder body (1) is provided with a left cover plate (5), the other end of the cylinder body (1) is provided with a right cover plate (6), the cylinder body (1) is arranged inside the curved shell (7), one end of the curved shell (7) is provided with a front cover plate (8), the other end of the curved shell (7) is provided with a rear cover plate (9), and the left cover plate (5) is connected to the output flange shaft (10); The valve core (2) is provided with a first air inlet and outlet (11) and a second air inlet and outlet (12), and the valve core (2) is provided with a first five-way air passage (13) and a second five-way air passage (14) in a radial direction, the first five-way air passage (13) and the second five-way air passage (14) are staggered with each other and located at two cross sections of the valve core (2), the first five-way air passage (13) and the second five-way air passage (14) are staggered with each other in the axial direction of the valve core (2), the first five-way air passage (13) and the second five-way air passage (14) are connected with each other with the first air inlet and outlet (11), and the second five-way air passage (14) and the second air inlet and outlet (12) are connected with each other, and ten air distribution grooves (15) are evenly and equidistantly provided on the periphery of the valve core (2), and the air distribution grooves (15) are connected with the first five-way air passage (13) and the second five-way air passage (14) respectively; The gas distribution copper sleeve (3) is provided with twelve gas distribution holes (16) in the radial direction; The cylinder body (1) is provided with twelve piston holes (17) in the radial direction, wherein the axes of six of the piston holes (17) are located in one plane, and the axes of the other six of the piston holes (17) are located in one plane, the piston holes (17) correspond to the gas distribution holes (16) of the gas distribution copper sleeve (3) one by one and are connected to each other, a piston (18) is arranged in each of the piston holes (17), and a roller (19) is arranged at the outer end of the piston (18) via a pin shaft; The inner wall of the curved outer shell (7) is provided with five arc surfaces (20), each of the arc surfaces (20) corresponding to two gas distribution grooves (15), and the roller (19) at the outer end of the piston (18) is supported on the inner wall of the curved outer shell (7) and rollingly engaged with the inner wall of the outer shell.

2. The crankshaftless piston rotary cylinder pneumatic motor according to claim 1, characterized in that: A pressure plate (21) is provided at one end of the gas distribution valve core (2) close to the output flange shaft (10), and the outer edge of the pressure plate (21) is pressed against the outer end of a corresponding deep groove ball bearing (4).

3. The crankshaftless piston rotary cylinder pneumatic motor according to claim 1, characterized in that: The output flange shaft (10) comprises an output shaft body (1001) and a flange body (1002); one end of the output shaft body (1001) is provided with a flange body (1002); the output shaft body (1001) passes through the center position of the front cover plate (8); and one side of the output shaft body (1001) is also provided with a keyway (1003).

4. The crankshaftless piston rotary cylinder pneumatic motor according to claim 1, characterized in that: The outer periphery of the rear cover plate (9) is connected to the curved outer shell (7) via bolts, and the rear cover plate (9) is also connected to the gas distribution valve core (2) via bolts.

5. The crankshaftless piston rotary cylinder pneumatic motor according to claim 1, characterized in that: The rear cover plate (9) is provided with a through groove (22), and the through groove (22) of the rear cover plate (9) corresponds to the first air inlet and outlet (11) and the second air inlet and outlet (12) of the air distribution valve core (2).

6. The crankshaftless piston rotary cylinder pneumatic motor according to claim 1, characterized in that: Positioning grooves (23) are provided on the outer side of the gas distribution copper sleeve (3) and the inner side of the cylinder body (1); the positioning grooves (23) of the gas distribution copper sleeve (3) and the cylinder body (1) correspond to each other and are matched by means of latches.

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