Floating male rotor double-cycloid motor

Abstract

The invention aims to solve the problem that an existing motor needs to be externally provided with a speed reducer in order to obtain large torque; according to the floating male rotor double-cycloid motor, the cycloid stator is arranged and matched with the inner pin roller, the outer pin roller, the rotor and the oil supply structure, oil pressure distribution in the first gap is changed, in addition, under the limiting effect of the outer pin roller, the cycloid stator is made to deflect, the inner pin roller on the inner side of the floating stator is pushed, the inner pin roller drives the rotor to rotate under the thrust effect, and the floating male rotor double-cycloid motor is formed. Finally, the purpose that the output shaft outputs large-torque rotation is achieved. In addition, by arranging the cycloid stator rotating eccentrically, the rotor in the cycloid stator can move around the axis, and convenience is provided for integrating a sensor, a speed reducer and other structures at the follow-up shaft end of the rotor and the output shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a floating male rotor double cycloid motor. Background Art

[0002] Traditional motors are usually electrically driven, and the rotor rotates and outputs torque through the force rotation of the electric coil in the magnetic field. The torque output by traditional electric drive motors is usually small, so they are also used with a reducer to increase the output torque at the cost of reducing the rotation speed, such as the content shown in the patents with application publication number CN119664857A and application publication number CN118881716A. However, in existing motors, in order to enhance the torque, a reduction structure, such as a cycloid reduction structure, needs to be configured outside the motor. The coordination of the motor and the cycloid reduction structure, on the one hand, makes the overall transmission structure and connection relationship more complicated, and on the other hand, with the increase of transmission parts, the transmission loss will also increase, reducing the transmission efficiency. In addition, an eccentric output shaft is usually set in the traditional cycloid structure, which will cause it to be unchanged with the subsequent connection, and a spline shaft needs to be set for transfer. Therefore, a floating male rotor double cycloid motor with high transmission efficiency and high torque is needed. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and provide a floating male rotor double cycloid motor.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions: A floating male rotor double cycloid motor comprises an output shaft and a housing, wherein the output shaft is arranged in the housing, and one end of the output shaft extends out of the housing; it also comprises a double cycloid structure and an oil supply structure; the double cycloid structure comprises a rotor, a cycloid stator, an outer roller and an inner roller; wherein the rotor is connected to the output shaft in a transmission manner to drive the output shaft to rotate, and the outer side of the rotor is also provided with a plurality of first grooves matched with the inner rollers for embedding the inner rollers; the cycloid stator is located on the outer side of the rotor; the cycloid stator is in a ring-shaped form as a whole, and its inner side is provided with an undulating arc surface based on the cycloid profile, and its outer side is also provided with an undulating arc surface based on the cycloid profile. The shell is located on the outside of the cycloid structure, and a third groove cooperating with the outer roller is provided on the side of the shell close to the cycloid structure, and the outer roller is embedded in the third groove; the minimum inner diameter of the cycloid stator is larger than the outer diameter of the rotor, and there is a first gap between the cycloid stator and the rotor; the maximum outer diameter of the cycloid stator is smaller than the inner diameter of the shell, and there is a second gap between the cycloid stator and the shell; when the cycloid stator rotates, its inner side is always in contact with all the inner rollers, and its outer side is always in contact with all the outer rollers; the oil supply structure corresponds to the first gap, and is used to supply and pump oil to the first gap.

[0005] Furthermore, the oil supply structure includes a rear end cover, an oil distribution plate, and an oil inlet and outlet plate; the oil distribution plate is provided with a first oil hole and a second oil hole penetrating the oil distribution plate, and the first oil hole and the second oil hole are respectively located on circular tracks of different radii on the oil distribution plate; the first oil hole and the second oil hole on the oil distribution plate are alternately arranged; a first oil groove corresponding to the first oil hole and a second oil groove corresponding to the second oil hole are also provided on one side of the oil distribution plate close to the rear end cover, all the first oil holes are connected to the first oil groove, and all the second oil holes are connected to the second oil groove; the distribution plate The oil pan is fixed and fitted with the rear end cover, and the rear end cover is provided with a first channel and a second channel, and the first channel and the second channel respectively correspond to the first oil groove and the second oil groove on the oil distribution plate; the inlet and outlet oil pan is fitted with the cycloid stator; the inlet and outlet oil pan is also transmission-connected with the rotor or the output shaft; the inlet and outlet oil pan is provided with oil inlet and outlet holes corresponding to the number of inner rollers, and the oil inlet and outlet holes are located between two adjacent inner rollers; when the inlet and outlet oil pan rotates relative to the oil distribution plate, its oil inlet and outlet holes are sequentially connected with the first oil hole and the second oil hole on the oil distribution plate.

[0006] Furthermore, the first oil hole and the second oil hole on the oil distribution plate are both provided with a downwardly recessed oil distribution cavity on a side close to the oil inlet and outlet plate.

[0007] Furthermore, a first positioning pin for determining a matching angle between the oil distribution plate and the rear end cover is provided between the oil distribution plate and the rear end cover.

[0008] Furthermore, the oil distribution plate is provided with first oil holes and second oil holes, the number of which is greater than the number of inner rollers.

[0009] Furthermore, both ends of the oil inlet and outlet holes of the oil inlet and outlet pan are respectively provided with oil storage cavities, and the oil storage cavities are communicated with the oil inlet and outlet holes.

[0010] Furthermore, it also includes a front end cover; the front end cover is fixedly connected to the shell through long screws, and a front end wear-resistant disk for sealing is also fixedly arranged between the front end cover and the shell.

[0011] Furthermore, a second positioning pin for determining a fitting angle is provided between the housing, the front end wear-resistant disc and the front end cover.

[0012] Furthermore, it also includes a braking structure, which includes a brake cover, a brake piston and a brake shaft, wherein one end of the brake shaft is inserted into the center hole of the rear end cover and is transmission-connected to the output shaft, and the brake shaft and the center hole of the rear end cover are sealed; the other end of the brake shaft penetrates into the brake hole in the middle of the brake piston and forms a seal with the brake piston; a plurality of protruding brake blocks are also arranged on the periphery of the brake shaft, and the brake blocks are abutted against the edge of the brake hole of the brake piston; the brake cover is fixedly connected to the rear end cover, and a plurality of disc springs are also arranged between the brake cover and the brake piston; the brake piston is slidably arranged in a cylindrical cavity on the rear end cover, and a brake oil hole for supplying and extracting oil is also arranged in the cylindrical cavity.

[0013] Furthermore, an oil supply hole for lubricating the outer column corresponding to the second gap is also provided on the rear end cover.

[0014] The beneficial effects of the present invention are as follows: By providing a cycloid stator, cooperating with an inner roller, an outer roller, a rotor and an oil supply structure, the oil pressure distribution in the first gap is changed, so as to drive the cycloid stator to deflect and swing, and then drive the rotor therein to rotate, controlling the rotation of the output shaft with a large torque. In addition, the setting of the cycloid stator also enables the rotor to move around its axis, facilitating the integration of structures such as sensors and speed reducers at the subsequent shaft ends of the rotor and the output shaft; By providing an oil distribution disc and an oil inlet and outlet disc, the oil supply and extraction of the first gap are realized, the oil pressure distribution in the first gap is controlled, and then the rotation of the rotor is controlled; By providing a braking structure and cooperating with a brake oil hole, the relative pressure between the brake piston and the brake shaft is controlled to realize the adjustment of the braking force and even control the stop of the brake shaft and the output shaft; By providing an oil distribution cavity, on the one hand, the oil distribution cavity can be easily communicated with the oil inlet and outlet holes on the oil inlet and outlet disc, and there is a larger communication angle range between the two. On the other hand, a certain amount of hydraulic oil can be stored in the oil distribution cavity, so that when the oil distribution cavity is communicated with the oil inlet and outlet holes on the oil inlet and outlet disc, the hydraulic oil can be quickly filled into the first gap through the oil inlet and outlet holes, improving the rotation speed and torque output by the output shaft. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1; Figure 2 It is an exploded view of the overall structure of Embodiment 1; Figure 3 It is an exploded view of the overall structure from another perspective of Embodiment 1; Figure 4 It is a front view of the overall structure of Embodiment 1; Figure 5 For Figure 4 the schematic A-A sectional view of; Figure 6 It is a schematic diagram of the double cycloid structure cooperation of Embodiment 1; Figure 7 It is a schematic diagram of the rear end cover of Embodiment 1; Figure 8 It is a schematic diagram of the rear end cover from another perspective of Embodiment 1; Figure 9 It is a schematic diagram of the oil inlet and outlet disc of Embodiment 1; Figure 10 It is a schematic diagram of the oil inlet and outlet disc from another perspective of Embodiment 1; Figure 11 It is a schematic diagram of the oil distribution disc of Embodiment 1; Figure 12 Schematic diagram of the oil distribution disk from another perspective of Embodiment 1; Figure 13 Exploded view of the braking structure of Embodiment 1 with the brake cover removed.

[0016] Explanation of the reference numerals in the drawings: output shaft 1, tooth structure 11, housing 2, second positioning pin 21, double cycloid structure 3, rotor 31, cycloid stator 32, outer roller 33, inner roller 34, first groove 35, third groove 37, first gap 38, second gap 39, oil supply structure 4, rear end cover 41, first channel 411, second channel 412, first positioning pin 413, cylindrical cavity 414, brake oil hole 415, oil supply hole 416, first arc-shaped hole 417, second arc-shaped hole 418, oil distribution disk 42, first oil hole 421, second oil hole 422, first oil groove 423, second oil groove 424, oil distribution cavity 425, oil inlet and outlet disk 43, oil inlet and outlet holes 431, oil storage cavity 432, front end cover 5, front wear-resistant disk 51, braking structure 6, brake cover 61, brake piston 62, brake hole 621, brake shaft 63, disc spring 64, brake cylinder 65, brake pressing ring 66. Detailed implementation manners

[0017] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0018] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and ratios of the components in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0019] Embodiment 1: As Figures 1 to 13As shown, a floating male rotor double cycloid motor includes an output shaft 1 and a housing 2, wherein the output shaft 1 is arranged in the housing 2, and one end of the output shaft 1 extends out of the housing 2; it also includes a double cycloid structure 3 and an oil supply structure 4; the double cycloid structure 3 includes a rotor 31, a cycloid stator 32, an outer roller 33 and an inner roller 34; wherein the rotor 31 is transmission-connected with the output shaft 1 to drive the output shaft 1 to rotate, and the outer side of the rotor 31 is also provided with a plurality of first grooves 35 that cooperate with the inner rollers 34 and are used to embed the inner rollers 34; the cycloid stator 32 is located on the outer side of the rotor 31 The cycloid stator 32 is in a ring shape as a whole, and its inner side is set as an arc surface based on the undulating contour of the inner cycloid, and the outer side is set as an arc surface based on the undulating contour of the outer cycloid. It should be noted that the arc surface on the outer side of the cycloid stator corresponds to the undulating part of the arc surface on the inner side, that is, when the outer side of the cycloid is customized to be convex, the corresponding inner side is concave; in this example, 7 inner rollers 34 are set on the outer side of the rotor 31, and 8 sections of undulating alternating arc surfaces are set on the cycloid stator 32; the housing 2 is located on the outer side of the cycloid structure, and the side of the housing 2 close to the cycloid structure is also provided with an outer roller 33, the outer roller 33 is embedded in the third groove 37; the first groove and the third groove are arc grooves that fit the side of the corresponding roller; in this example, 9 outer rollers 33 are arranged between the housing 2 and the cycloid stator 32; the minimum inner diameter of the cycloid stator 32 is greater than the outer diameter of the rotor 31, and there is a first gap 38 between the cycloid stator 32 and the rotor 31; it should be noted that the minimum inner length of the cycloid stator 32 passing through the axis is greater than the maximum outer length of the rotor 31 passing through the axis after combining with the inner roller 34, so that the cycloid stator 32 When deflecting, it can push the inner roller 34, thereby driving the rotor 31 to rotate; the maximum outer diameter of the cycloid stator 32 is smaller than the inner diameter of the housing 2, and there is a second gap 39 between the cycloid stator 32 and the housing 2; it should be noted that the maximum outer length of the cycloid stator 32 passing through the axis is smaller than the minimum inner length of the cycloid stator 32 passing through the axis after the outer roller 33 is combined on the housing 2, so that when the cycloid stator 32 moves, it will rotate with the change of the oil pressure provided by the oil supply structure; the oil supply structure 4 corresponds to the first gap 38, and is used to supply and pump oil to the first gap 38. When supplying oil to the inside of the first gap 38, the hydraulic pressure of the oil supply part increases, and similarly the hydraulic pressure of the oil pumping part decreases, driving the cycloid stator 32 to deflect, and after the cycloid stator 32 deflects, it will generate thrust on the inner roller 34, thereby driving the rotor 31 to rotate, and the output shaft 1 outputs torque. It should be noted that when the cycloid stator 32 deflects, the inner side of the cycloid stator always fits with all the inner rollers, and the outer side of the cycloid stator always fits with all the outer rollers.

[0020] The oil supply structure 4 includes a rear end cover 41, an oil distribution plate 42, and an oil inlet and outlet plate 43; the oil distribution plate 42 is provided with a first oil hole 421 and a second oil hole 422 that penetrates the oil distribution plate 42, and the first oil hole 421 and the second oil hole 422 are respectively located on circular tracks of different radii on the oil distribution plate 42; the first oil hole 421 and the second oil hole 422 on the oil distribution plate 42 are alternately arranged; one of the first oil hole 421 and the second oil hole 422 is used for oil inlet and the other is used for oil outlet; when the first oil hole 421 is filled with oil, the motor rotates forward, and when the second oil hole 422 is filled with oil, the motor rotates reversely; in this example, the first oil hole 421 is used to fill the oil, and the second oil hole 422 is used to discharge the oil; a first oil hole 421 is used to fill the oil, and a second oil hole 422 is used to fill the oil; a second oil hole 422 is used to fill the oil; a first oil hole 421 is used to fill the oil, and a second oil hole 422 is used to fill the oil; a second oil hole 422 is used to fill the oil; a second oil hole 421 is used to fill the oil, and a second oil hole 422 is used to fill the oil; a first oil hole 421 is used to fill the oil, and a second oil hole 422 is used to fill the oil; ...1 is used to fill the There is a first oil groove 423 corresponding to the first oil hole 421 and a second oil groove 424 corresponding to the second oil hole 422, all the first oil holes 421 are connected to the first oil groove 423, and all the second oil holes 422 are connected to the second oil groove 424; adjacent side walls of two grooves are arranged between the first oil groove 423 and the second oil groove 424, and the side walls are tightly attached to the rear end cover 41, forming an isolation between the first oil groove 423 and the second oil groove 424; the oil distribution plate 42 is fixed and fitted to the rear end cover 41, and the rear end cover 41 is provided with a first channel 411 and a second channel 412, and the first channel 411 and the second channel 412 correspond to the first oil groove 423 and the second oil groove 424 on the oil distribution plate 42 respectively. In this example, the first channel 411 on the rear end cover 41 is provided with a first arc hole 417 corresponding to the shape of the first oil groove 423 on the oil distribution plate 42 on one side thereof; similarly, the second channel 412 is provided with a second arc hole 418 corresponding to the shape of the second oil groove 424 on one side thereof close to the oil distribution plate 42; in the case where the diameter of the circular hole is limited, the arc hole can respectively enhance the ability to quickly fill or draw oil from the first oil groove 423 and the second oil groove 424. The angles of the first channel 411 and the second channel 412 on the rear end cover 41 are 180° with respect to the angle of the rear end cover 41.

[0021] The oil inlet and outlet pan 43 is arranged in close contact with the cycloid stator 32 to form a closed first gap 38 between the cycloid stator 32 and the rotor 31; the oil inlet and outlet pan 43 is also connected to the rotor 31 or the output shaft 1 in a transmission manner. In this example, the oil inlet and outlet pan 43 is meshed with the output shaft 1 for transmission, so that it rotates with the rotation of the output shaft 1. The oil inlet and outlet pan 43 is provided with oil inlet and outlet holes 431 corresponding to the number of the inner rollers 34, and the oil inlet and outlet holes 431 are located between two adjacent inner rollers 34 and communicate with the first gap 38; in this example, the number of the inner rollers 34 is set to 8, and 8 corresponding oil inlet and outlet holes 431 are provided on the oil inlet and outlet pan 43; the shape of the oil inlet and outlet holes 431 is a waist-shaped hole as a whole, so that when the oil inlet and outlet pan 43 rotates relative to the oil distribution pan 42, the oil inlet and outlet holes 431 thereon are sequentially communicated with the first oil hole 421 and the second oil hole 422 on the non-diameter circular trajectory on the oil distribution pan 42.

[0022] A first oil hole 421 and a second oil hole 422 are provided on the oil distribution disc 42, and the number of the first oil holes 421 is more than the number of the inner rollers 34. In this example, nine equally-angularly-spaced first oil holes 421 and nine equally-angularly-spaced second oil holes 422 are provided on the oil distribution disc 42. In this way, the oil inlet / outlet holes 431 on the oil inlet / outlet disc 43 will not all be opposite to the first oil holes 421 or the second oil holes 422 on the oil distribution disc 42 at the same time. Instead, a limited number of the oil inlet / outlet holes 431 communicate with the first oil holes 421 on the oil distribution disc 42, another part of the oil inlet / outlet holes 431 communicate with the second oil holes 422, and the remaining oil inlet / outlet holes 431 are blocked by the parts of the oil distribution disc 42 where no first oil holes 421 and second oil holes 422 are provided. Moreover, since the first oil holes and the second oil holes are alternately and equally-angularly arranged, the parts of the oil inlet / outlet holes 431 that communicate with the first oil holes 421 and the parts that communicate with the second oil holes 422 are continuously distributed, so that a hydraulic pressure difference is formed at different parts of the oil inlet / outlet holes 431 on the oil inlet / outlet disc 43, and the cycloid stator 32 is pushed to deflect in a set direction. During the movement, the hydraulic oil first enters the first oil groove 423 through the first channel 411 on the rear end cover 41 and is stored in the first oil groove 423. As the rotor 31 and the oil inlet / outlet disc 43 rotate, the oil inlet / outlet holes 431 on the oil inlet / outlet disc 43 are sequentially communicated with the first oil holes 421 and the second oil holes 422 on the oil distribution disc 42. The hydraulic oil is introduced into the first gap 38 through the first oil holes 421, and the hydraulic oil on the other side of the first gap 38 enters the second oil groove 424 through the second oil holes 422 and then flows out through the second channel 412 on the rear end cover 41 to form a cycle. It should be noted that in some other embodiments, the hydraulic oil can flow in the reverse direction along the above oil path, and at this time the motor rotates in the reverse direction.

[0023] On the side of the first oil holes 421 and the second oil holes 422 on the oil distribution disc 42 close to the oil inlet / outlet disc 43, oil distribution cavities 425 that are recessed downward are provided, and the cross-sectional area of the top of the oil distribution cavity 425 is larger than the cross-sectional area of the first oil hole 421 or the second oil hole 422. On the one hand, it enables the oil distribution cavity 425 to easily communicate with the oil inlet / outlet holes 431 on the oil inlet / outlet disc 43, that is, when the oil inlet / outlet disc 43 rotates relative to the oil distribution disc 42, there is a larger communication angle range between the two. On the other hand, a certain amount of hydraulic oil can be stored in the oil distribution cavity 425, so that when the oil distribution cavity 425 communicates with the oil inlet / outlet holes 431 on the oil inlet / outlet disc 43, the hydraulic oil can be quickly filled into the first gap 38 through the oil inlet / outlet holes 431.

[0024] Both ends of the oil inlet / outlet holes 431 of the oil inlet / outlet tray 43 are respectively provided with oil storage cavities 432 formed by depressions. The oil storage cavities 432 communicate with the oil inlet / outlet holes 431. It should be noted that the oil storage cavities 432 do not communicate with the oil distribution cavities 425 of two adjacent first oil holes 421 and second oil holes 422, or two adjacent first oil holes 421, or two adjacent second oil holes 422 at the same time.

[0025] The radius of the circular trajectory where the first oil holes 421 on the oil distribution tray 42 are located is greater than the radius of the circular trajectory where the second oil holes 422 are located. In some other embodiments, it can also be set that the radius of the circular trajectory where the first oil holes 421 are located is less than the radius of the circular trajectory where the second oil holes 422 are located. The main purpose is to make the radii of the circular trajectories where the first oil holes 421 and the second oil holes 422 are located different, so that there is a partition between the first oil groove 423 and the second oil groove 424 on the one hand.

[0026] The rear end cover 41 is also provided with an oil supply hole 416 for outer column lubrication corresponding to the second gap 39. The oil supply hole 416 passes through a through hole provided on the oil distribution tray 42 and is connected into the second gap 39 to pump lubricating oil into the second gap 39, reducing the frictional resistance generated when the cycloid stator 32 deflects.

[0027] It should be noted that the oil inlet / outlet directions on the rear end cover and the oil distribution tray can be changed.

[0028] It further includes a front end cover 5. The front end cover 5 is fixedly connected to the housing 2 by long screws, and a front wear-resistant disc 51 for sealing is fixedly arranged between the front end cover 5 and the housing 2. A first positioning pin 413 for determining the mating angle is arranged between the oil distribution tray 42 and the rear end cover 41. A second positioning pin 21 for determining the mating angle is arranged between the housing 2, the front wear-resistant disc 51 and the front end cover 5.

[0029] The rotor 31 and the output shaft 1 are meshed and driven through a tooth structure 11. The tooth structure 11 on the output shaft 1 is also meshed and driven with the oil inlet / outlet tray 43 to drive the oil inlet / outlet tray 43 to rotate. Both ends of the rotor 31 are respectively rotatably connected to the front end cover 5 and the rear end cover 41, and ball bearings are respectively arranged between the rotor 31 and the front end cover 5 and between the rotor 31 and the rear end cover 41.

[0030] It further includes a braking structure 6, which includes a braking cover 61, a braking piston 62 and a braking shaft 63. One end of the braking shaft 63 passes through the central hole of the rear end cover 41 and is in transmission connection with the output shaft 1. The braking shaft 63 is sealed at the central hole part of the rear end cover 41. In this example, the end of the output shaft 1 close to the braking shaft 63 is set as a regular hexagonal prism shape, and one end of the braking shaft 63 close to the output shaft 1 is set as a corresponding hexagonal prism hole. The two are inserted and docked to achieve synchronous rotation. The other end of the braking shaft 63 penetrates into the braking hole 621 in the middle of the braking piston 62 and forms a seal with the braking piston 62. A number of protruding braking blocks are also arranged on the outer circumference of the braking shaft 63, and the braking blocks abut against the edge of the braking hole 621 of the braking piston 62. The braking cover 61 is fixedly connected to the rear end cover 41, and a number of disc springs 64 are also arranged between the braking cover 61 and the braking piston 62. The disc springs 64 are nested on the braking cylinders 65. In this example, a number of braking cylinders 65 are arranged on the braking piston 62 at equal angles around its axis, and each braking cylinder 65 is nested with a plurality of disc springs 64. The braking piston 62 is slidably arranged in the cylindrical cavity 414 on the rear end cover 41, and a braking oil hole 415 for oil supply and oil extraction is also arranged in the cylindrical cavity 414. When the oil supply in the braking oil hole 415 reaches a certain pressure, the braking piston 62 in the sealed cylindrical cavity 414 is pushed towards the braking cover 61, reducing the rotational resistance of the braking piston 62 to the braking shaft 63. When the oil supply pressure in the braking oil hole 415 decreases, due to the action of the disc springs 64 between the braking piston 62 and the braking cover 61, the braking piston 62 is pushed towards the braking shaft 63 and abuts against the braking blocks on the outer circumference of the braking shaft 63, enhancing the rotational resistance between the two and even stopping the rotation of the braking shaft 63.

[0031] It should be noted that in order to ensure the sealing effect between the braking shaft 63 and the rear end cover 41, a braking pressure ring 66 is also arranged between the central hole part of the rear end cover 41 and the braking shaft 63. The braking pressure ring 66 is fixedly connected to the bottom of the cylindrical cavity 414 of the rear end cover 41 through a threaded structure. The braking shaft 63 passes through the elastic braking pressure ring 66, and a sealing ring body is arranged between the outer circumference of the braking shaft 63 and the inner side wall of the braking pressure ring 66. A third positioning pin for determining the matching angle between the two is also arranged between the braking cover 61 and the rear end cover 41.

[0032] An outer channel communicating with the first channel 411, the second channel 412, the oil supply hole 416 and the braking oil hole 415 is also arranged on the outer side surface of the rear end cover 41. A screw for plugging is arranged on the outer side of the outer channel, and the screw can be removed for maintenance or other operations.

[0033] In the implementation process, by setting the cycloid stator 32, cooperating with the inner roller 34, outer roller 33, rotor 31 and the oil supply structure 4, the oil pressure distribution in the first gap 38 is changed to drive the cycloid stator 32 to deflect and swing, and then drive the rotor 31 therein to rotate, controlling the output shaft 1 to output a large torque rotation; by setting the oil distribution disc 42 and the oil inlet and outlet disc 43, the oil supply and extraction of the first gap 38 are realized, the oil pressure distribution in the first gap 38 is controlled, and then the rotation of the rotor 31 is controlled. In addition, by setting a floating stator that rotates eccentrically, the rotor therein can move around its axis, facilitating the integration of sensors and speed reducers and other structures at the subsequent shaft ends of the rotor and the output shaft; by setting the braking structure 6, cooperating with the brake oil hole 415, the relative pressure between the brake piston 62 and the brake shaft 63 is controlled to adjust the braking force and even control the brake shaft 63 and the output shaft 1 to stop rotating; by setting the oil distribution cavity 425, on the one hand, the oil distribution cavity 425 can be easily communicated with the oil inlet and outlet holes 431 on the oil inlet and outlet disc 43, and there is a larger communication angle range between the two. On the other hand, a certain amount of hydraulic oil can be stored in the oil distribution cavity 425, so that when the oil distribution cavity 425 is communicated with the oil inlet and outlet holes 431 on the oil inlet and outlet disc 43, the hydraulic oil can be quickly filled into the first gap 38 through the oil inlet and outlet holes 431, improving the rotation speed and torque output by the output shaft 1.

[0034] The above description is only a specific example of the present invention and does not constitute any limitation to the present invention. Obviously, for professionals in the field, after understanding the content and principle of the present invention, various modifications and changes in form and details may be made without departing from the principle and structure of the present invention. However, these corrections and changes based on the idea of the present invention are still within the protection scope of the claims of the present invention.

Claims

1. A floating male rotor double cycloid motor, comprising an output shaft (1) and a housing (2), wherein the output shaft (1) is arranged inside the housing (2), and one end of the output shaft (1) extends out of the housing (2); characterized in that, It also includes a double cycloid structure (3) and an oil supply structure (4); the double cycloid structure (3) includes a rotor (31), a cycloid stator (32), outer rollers (33) and inner rollers (34); wherein the rotor (31) is in transmission connection with the output shaft (1) and is used to drive the output shaft (1) to rotate. A plurality of first grooves (35) cooperating with the inner rollers (34) are further provided on the outer side of the rotor (31) for embedding the inner rollers (34); the cycloid stator (32) is located on the outer side of the rotor (31); the cycloid stator (32) is integrally annular, the inner side thereof is set as a wavy arc surface based on the cycloid profile, and the outer side is also set as a wavy arc surface based on the cycloid profile; the housing (2) is located on the outer side of the cycloid structure, and a third groove (37) cooperating with the outer rollers (33) is further provided on one side of the housing (2) close to the cycloid structure, and the outer rollers (33) are embedded in the third groove (37); the minimum inner diameter of the cycloid stator (32) is greater than the outer diameter of the rotor (31), and a first gap (38) exists between the cycloid stator (32) and the rotor (31); the maximum outer diameter of the cycloid stator (32) is less than the inner diameter of the housing (2), and a second gap (39) exists between the cycloid stator (32) and the housing (2); when the cycloid stator (32) rotates, its inner side is always in contact with all the inner rollers (34), and its outer side is always in contact with all the outer rollers (33); the oil supply structure (4) corresponds to the first gap (38) and is used for supplying and pumping oil to the first gap (38).

2. A floating male rotor double cycloid motor according to claim 1, characterized in that, The fuel supply structure (4) includes a rear end cover (41), a distribution plate (42), and an oil inlet and outlet plate (43); a first oil hole (421) and a second oil hole (422) penetrating through the distribution plate (42) are provided on the distribution plate (42), and the first oil hole (421) and the second oil hole (422) are respectively located on circular trajectories with different radii on the distribution plate (42); the first oil holes (421) and the second oil holes (422) on the distribution plate (42) are alternately arranged; on one side of the distribution plate (42) close to the rear end cover (41), a first oil groove (423) corresponding to the first oil hole (421) and a second oil groove (424) corresponding to the second oil hole (422) are further provided, all the first oil holes (421) communicate with the first oil groove (423), and all the second oil holes (422) communicate with the second oil groove (424); the distribution plate (42) is fixedly and fittingly arranged with the rear end cover (41), a first channel (411) and a second channel (412) are provided on the rear end cover (41), and the first channel (411) and the second channel (412) respectively correspond to the first oil groove (423) and the second oil groove (424) on the distribution plate (42); the oil inlet and outlet plate (43) is fittingly arranged with the cycloid stator (32); the oil inlet and outlet plate (43) is also in transmission connection with the rotor (31) or the output shaft (1); oil inlet and outlet holes (431) corresponding to the number of inner rollers (34) are provided on the oil inlet and outlet plate (43), and the oil inlet and outlet holes (431) are located between two adjacent inner rollers (34); when the oil inlet and outlet plate (43) rotates relative to the distribution plate (42), the oil inlet and outlet holes (431) thereof are sequentially communicated with the first oil hole (421) and the second oil hole (422) on the distribution plate (42).

3. A floating male rotor double cycloid motor according to claim 2, characterized in that, On the side of the first oil hole (421) and the second oil hole (422) on the distribution plate (42) close to the oil inlet and outlet plate (43), an oil distribution cavity (425) sunken downward is provided.

4. A floating male rotor double cycloid motor according to claim 2, characterized in that, The distribution plate (42) is provided with a number of first oil holes (421) and second oil holes (422) that is more than the number of inner rollers (34).

5. A floating male rotor double cycloid motor according to claim 2, wherein, At both ends of the oil inlet and outlet holes (431) of the oil inlet and outlet plate (43), oil storage cavities (432) are respectively provided, and the oil storage cavities (432) communicate with the oil inlet and outlet holes (431).

6. A floating male rotor double cycloid motor according to claim 2, wherein A first positioning pin (413) for determining the matching angle between the two is provided between the distribution plate (42) and the rear end cover (41).

7. A floating male rotor double cycloid motor according to claim 2, wherein, It further includes a front end cover (5); the front end cover (5) is fixedly connected to the housing (2) by long screws, and a front end wear-resistant disc (51) for sealing is fixedly arranged between the front end cover (5) and the housing (2).

8. A floating male rotor double cycloid motor according to claim 7, characterized in that, A second positioning pin (21) for determining the matching angle is provided between the housing (2), the front end wear-resistant disc (51), and the front end cover (5).

9. The floating male rotor double cycloid motor according to claim 2, wherein It further includes a braking structure (6), which includes a braking cover (61), a braking piston (62), and a braking shaft (63). One end of the braking shaft (63) passes through the central hole of the rear end cover (41) and is in transmission connection with the output shaft (1). The braking shaft (63) is sealed at the central hole part of the rear end cover (41). The other end of the braking shaft (63) penetrates into the braking hole (621) in the middle of the braking piston (62) and forms a seal with the braking piston (62). A number of protruding braking blocks are further arranged on the outer periphery of the braking shaft (63), and the braking blocks abut against the edge of the braking hole (621) of the braking piston (62). The braking cover (61) is fixedly connected to the rear end cover (41), and a number of disc springs (64) are further arranged between the braking cover (61) and the braking piston (62). The braking piston (62) is slidably arranged in the cylindrical cavity (414) on the rear end cover (41), and a braking oil hole (415) for oil supply and oil extraction is further arranged in the cylindrical cavity (414).

10. A floating male rotor double cycloid motor according to claim 2, wherein An oil supply hole (416) for outer column lubrication corresponding to the second gap (39) is further arranged on the rear end cover (41).

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