Bidirectional magnetoelectric coupling transmission power axle

Abstract

The invention discloses a bidirectional magnetoelectric coupling transmission power axle which comprises a middle power input device and two magnetoelectric coupling transmission power devices which are symmetrically arranged on the two sides of the middle power input device and are of the same structure. The middle power input device comprises an axle main shell and a center power transmission gear rotationally installed in the axle main shell. The magnetoelectric coupling power transmission device comprises a transmission half shaft, the transmission half shaft is coaxially and fixedly connected to a wheel shaft of the central power transmission gear, and a conductive slip ring and a coupling coil inner rotor are coaxially fixed on the transmission half shaft at an interval and are in circuit connection; the outer side of the conductive slip ring is provided with an electric contact carbon brush, the outer side of the coupling coil inner rotor is sleeved with a coupling magnetic cylinder outer rotor, the coupling magnetic cylinder outer rotor is coaxially fixed with a coupling magnetic cylinder rotor shaft, and the output end of the coupling magnetic cylinder rotor shaft is connected with a planetary reducer. The structure is simple, a mechanical differential mechanism in an existing axle is replaced with the magnetoelectric coupling power transmission device, the rotating speed of the output shaft is controlled by controlling coupling current output, and low-resistance-consumption flexible turning of the vehicle is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle transmission devices, and particularly relates to a bidirectional magnetoelectric coupling power transmission axle. Background Art

[0002] As an important part of existing vehicles, the axle bears the load of the vehicle. According to different driving methods, it can be divided into four types: steering axle, driving axle, steering and driving axle, and support axle. Among them, the steering axle and the support axle both belong to driven axles. When the vehicle is driving in a curve or turning, the two wheels on the same axis need to have a certain rotational speed difference to achieve flexible steering of the vehicle. To achieve this rotational speed difference, an automotive differential is usually used, which can make the left and right (or front and rear) driving wheels rotate at different speeds, ensuring that the vehicle turns smoothly on the road. However, most existing automotive differentials are mechanical differentials. During the use process, they are prone to wear, and even breakage, with a relatively high failure rate, which affects the transmission efficiency and service life, and there are certain safety hazards; if the differential is not used, it will cause hard torsion of the vehicle shaft, resulting in shaft breakage and loss of driving force. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies existing in the above-mentioned prior art background, and provide a bidirectional magnetoelectric coupling power transmission axle.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] The bidirectional magnetoelectric coupling power transmission axle includes an intermediate power input device and two magnetoelectric coupling power transmission devices symmetrically arranged on both sides thereof. The intermediate power input device includes a main axle housing and a central power transmission gear rotatably installed inside it, and the front end of the main axle housing is open.

[0006] The two magnetoelectric coupling power transmission devices have the same structure, and each includes a transmission half shaft, a conductive slip ring, a carbon brush, a half shaft connecting cross bridge, a coupling coil inner rotor, a coupling magnet cylinder outer rotor, a coupling magnet cylinder rotor shaft, a coupling magnet cylinder cross bridge housing, and a planetary reducer; one end of the transmission half shaft is coaxially and fixedly connected to the axle end of the above-mentioned central power transmission gear, and the other end is coaxially and fixedly connected to the coupling coil inner rotor. The coupling magnet cylinder outer rotor is coaxially sleeved outside the coupling coil inner rotor, and the end side facing away from the transmission half shaft is coaxially fixedly coupled with the coupling magnet cylinder rotor shaft; a conductive slip ring is also coaxially sleeved and fixed on the transmission half shaft, spaced from the above-mentioned coupling coil inner rotor, and connected by a circuit, and a carbon brush is arranged outside the conductive slip ring; one end of the above-mentioned half shaft connecting cross bridge is fixedly connected to the main axle housing, placed outside the transmission half shaft, and the other end is fixedly connected to the coupling magnet cylinder cross bridge housing, and the coupling magnet cylinder cross bridge housing is placed outside the above-mentioned coupling magnet cylinder outer rotor; the output end of the coupling magnet cylinder rotor shaft is connected and installed with a planetary reducer.

[0007] Further, the planetary speed reducer is installed on the side of the coupling magnet cylinder cross bridge housing away from the intermediate power input device, and includes an external gear disc bracket, a central gear, a plurality of planetary gears, and a planetary gear output shaft. The external gear disc bracket is fixedly connected to the above-mentioned coupling magnet cylinder cross bridge housing, and an internal gear ring is provided on its inner side wall. The planetary gear output shaft coaxially passes through the external gear disc bracket and is rotatably connected thereto. One end of the planetary gear output shaft located inside the external gear disc bracket is provided with a planetary gear, and the planetary gear meshes with the above-mentioned internal gear ring. The central gear is coaxially fixed to one end of the above-mentioned coupling magnet cylinder rotor shaft away from the transmission half shaft, and is placed between and meshes with the above-mentioned plurality of planetary gears.

[0008] Further, the vehicle axle main housing includes a left vehicle axle housing and a right vehicle axle housing that are symmetric to each other. The two are butt-jointed and fixed by bolts, and its front end opening is connected to the power source input device. One end of the half shaft connecting cross bridge is provided with a half shaft sleeve. When the half shaft connecting cross bridge is fixedly connected to the vehicle axle main housing, the half shaft sleeve is inserted into the vehicle axle main housing, and a bearing is coaxially fixed inside it. The wheel shaft end of the above-mentioned central power transmission gear is coaxially installed in the inner ring of the bearing.

[0009] Further, a coaxial embedded keyway cavity is provided at the wheel shaft end of the central power transmission gear. One end of the above-mentioned transmission half shaft close to the central power transmission gear is provided with a spline and is coaxially inserted into the above-mentioned embedded keyway cavity. One end of the transmission half shaft away from the central power transmission gear is in a boss shape, and an internal coaxial cavity is provided at its end. The inner rotor of the above-mentioned coupling coil is coaxially sleeved on the boss and fixed by screws.

[0010] Further, one end of the coupling magnet cylinder rotor shaft close to the transmission half shaft is coaxially inserted into the internal cavity and is rotatably connected by a bearing. A magnet cylinder fixing disc is coaxially fixed on the coupling magnet cylinder rotor shaft. The outer rotor of the above-mentioned coupling magnet cylinder is sleeved on the coupling magnet cylinder rotor shaft and is fixedly connected to the magnet cylinder fixing disc by screws. One end of the coupling magnet cylinder rotor shaft away from the transmission half shaft is coaxially fixed to the central gear by a key.

[0011] Further, the carbon brush is fixed to the circumferential inner side wall of the half shaft connecting cross bridge through a carbon brush bracket and is in electrical contact with the above-mentioned conductive slip ring; it is connected to the power storage device through an external circuit.

[0012] Further, one end of the planetary gear output shaft close to the coupling magnet cylinder rotor shaft is provided with a coaxial planetary gear disc, which is integrally formed, and three planetary gear shafts arranged at equal intervals along its circumference are fixed thereon. The planetary gears are coaxially installed on the planetary gear shafts through bearings; the planetary gear disc has no direct contact with the coupling magnet cylinder rotor shaft.

[0013] Further, the planetary gear output shaft and the outer gear disc bracket are coaxially rotatably connected through a bearing, and the planetary gear disc is disposed inside the outer gear disc bracket.

[0014] Further, the inner rotor of the coupling coil includes a plurality of radial copper winding coils arranged along its circumference; a plurality of permanent magnets are fixed on the inner circumferential side wall of the cylinder body of the outer rotor of the coupling magnetic cylinder and are arranged at equal intervals along its circumference. There is a gap between the inner side of the permanent magnet and the outer circumference of the above-mentioned radial copper winding coil, and the inner rotor of the coupling coil and the outer rotor of the coupling magnetic cylinder rotate relatively.

[0015] Further, a plurality of heat dissipation holes are provided on the coupling magnetic cylinder cross bridge housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The structure of the present invention is simple. The existing mechanical differential is replaced by a bidirectional magnetoelectric coupling power transmission device, so that the differential structure is not provided in the axle. By controlling the current output of the two couplers, the rotation speed of the output shaft is controlled, making the vehicle turn more flexibly with less resistance, realizing low resistance consumption and flexible turning; at the same time, the bidirectional magnetoelectric coupling power transmission device has a kinetic energy recovery function and can realize the reuse of electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a top view of the present invention;

[0019] Figure 3 is Figure 2 a cross-sectional view taken along the A-A direction in

[0020] Figure 4 is Figure 2 a cross-sectional view taken along the B-B direction in

[0021] Figure 5 is Figure 2 a cross-sectional view taken along the C-C direction in

[0022] Figure 6 is Figure 2 a cross-sectional view taken along the D-D direction in

[0023] Figure 7 is Figure 2 a cross-sectional view taken along the E-E reverse direction in

[0024] Figure 8 is a schematic diagram of the structure of the central power transmission gear in the present invention;

[0025] Figure 9 is a schematic diagram of the structure of the transmission half shaft in the present invention;

[0026] Figure 10 This is a schematic structural diagram of the coupling magnetic cylinder rotor shaft in the present invention;

[0027] Figure 11 This is a schematic structural diagram of the planetary gear output shaft in the present invention;

[0028] In the figure: 1. Axle main housing, 2. Central power transmission gear, 3. Transmission half shaft, 4. Conductive slip ring, 5. Half shaft connecting cross bridge, 6. Inner rotor of coupling coil, 7. Outer rotor of coupling magnetic cylinder, 8. Coupling magnetic cylinder rotor shaft, 9. Coupling magnetic cylinder cross bridge housing, 10. Planetary reducer, 21. Keyway cavity, 31. Spline, 32. Boss plate, 33. Embedded cavity, 34. Keyway, 61. Copper winding coil, 81. Magnetic cylinder fixing plate, 101. Outer tooth disc bracket, 102. Central gear, 103. Planetary gear, 104. Internal gear ring, 105. Planetary gear output shaft, 106. Planetary gear shaft, 107. Bearing, 108. Planetary gear disc. Specific embodiments

[0029] It should be noted that in the description of the present invention, terms such as "left", "right", "front", "rear", "inner", "outer", "coaxial", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationships of various components in the present invention, and do not specifically refer to any component in the present invention that must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0030] In addition, it should also be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The following will further describe the specific embodiments of the present invention in detail with reference to the drawings:

[0032] As Figures 1 to 7 shown, a two-way magnetoelectric coupling transmission power axle includes an intermediate power input device and two magnetoelectric coupling transmission power devices symmetrically arranged on its left and right sides. Among them, the intermediate power input device includes an axle main housing 1 and a central power transmission gear 2. The axle main housing 1 is composed of a left axle housing and a right axle housing, which are symmetrically arranged with each other. They are butt-jointed and fixed and sealed by a plurality of bolts passing through the connecting flange, forming a gear cavity in the middle, and its front end is open; the above-mentioned central power transmission gear 2 is rotatably installed in the gear cavity of the axle main housing 1.

[0033] The structures of the two magnetoelectric coupling transmission power devices are the same. Taking the magnetoelectric coupling transmission power device on the left side as an example, it includes a transmission half shaft 3, a conductive slip ring 4, a carbon brush, a half shaft connecting cross bridge 5, a coupling coil inner rotor 6, a coupling magnet cylinder outer rotor 7, a coupling magnet cylinder rotor shaft 8, a coupling magnet cylinder cross bridge housing 9, and a planetary reducer 10. An integrally formed and outwardly convex half shaft sleeve is fixedly provided on the right end side of the half shaft connecting cross bridge 5. Correspondingly, an installation through hole is provided on the left side wall of the above-mentioned left axle housing, and the above-mentioned half shaft sleeve is inserted into the installation through hole; a connection flange is integrally formed at the right end of the half shaft connecting cross bridge 5, and connection screw holes are provided thereon, and it is fixedly connected to the above-mentioned left axle housing through screws; a bearing is fixedly installed in the half shaft sleeve by interference fit, and the left end of the wheel shaft of the above-mentioned central power transmission gear 2 is coaxially and fixedly inserted into the inner ring of the bearing, combined with Figure 8 As shown, an embedded keyway cavity 21 is also coaxially provided at the wheel shaft end of the central power transmission gear 2. The transmission half shaft 3 is placed inside the above-mentioned half shaft connecting cross bridge 5, and its right end is coaxially connected to the left end of the wheel shaft of the above-mentioned central power transmission gear 2. Combined with Figure 9 As shown, a spline 31 is provided at the right end of the transmission half shaft 3, which can be adaptively inserted into the keyway cavity 21 of the above-mentioned central power transmission gear 2 to achieve coaxial and fixed connection between the two; the left end of the transmission half shaft 3 is provided in a convex shape, with a coaxial convex disc 32, and at the same time, a coaxial embedded cavity 33 is provided on the left end side of the transmission half shaft 3; a keyway 34 is also provided in the middle of the transmission half shaft 3 along its length direction. The above-mentioned conductive slip ring 4 is coaxially sleeved on the middle of the transmission half shaft 3, and the relative fixation between the two is completed by inserting a key into the keyway 34; the carbon brush matching the conductive slip ring 4 is fixedly installed on the inner circumferential side wall of the half shaft connecting cross bridge 5 through a carbon brush bracket, and can always be in electrical contact connection with the conductive slip ring 4, and the carbon brush is connected to a power storage device through an external circuit. The above-mentioned coupling coil inner rotor 6 is coaxially sleeved on the left end convex structure of the above-mentioned transmission half shaft 3 and is fixedly connected to the convex disc 32 by screws, and can rotate synchronously with the transmission half shaft 3; the coupling coil inner rotor 6 and the above-mentioned conductive slip ring 4 are arranged at intervals and are line-connected through output phase lines; a number of radial copper winding coils 61 arranged along its circumference are included on the coupling coil inner rotor 6. The left end of the above-mentioned transmission half shaft 3 is coaxially connected to a coupling magnet cylinder rotor shaft 8. Combined with Figure 10As shown, the right end of the coupling magnetic cylinder rotor shaft 8 is inserted into the inner cavity 33 at the left end of the above-mentioned transmission half shaft 3, and the two are rotatably connected through a bearing; a magnetic cylinder fixing disk 81 integrally formed with it is coaxially fixed on the coupling magnetic cylinder rotor shaft 8, and the coupling magnetic cylinder outer rotor 7 is coaxially installed on the coupling magnetic cylinder rotor shaft 8 and is fixedly connected to the magnetic cylinder fixing disk 81 by screws. The coupling magnetic cylinder outer rotor 7 is coaxially sleeved outside the above-mentioned coupling coil inner rotor 6, and several permanent magnets arranged at equal intervals in the circumferential direction are fixed on the inner side wall of its cylinder body circumference. A gap is left between the inner side of the permanent magnet and the outer circumference of the radial copper winding coil 61 of the above-mentioned coupling coil inner rotor 6 to ensure that the coupling coil inner rotor 6 can rotate relative to the coupling magnetic cylinder outer rotor 7. At the same time, a coupling magnetic cylinder cross bridge housing 9 is also sleeved outside the coupling magnetic cylinder outer rotor 7. The right end part of it is fixedly connected to the left end part of the above-mentioned half shaft connecting cross bridge 5 by bolts, and a cover is provided at its left end part. The left end of the above-mentioned coupling magnetic cylinder rotor shaft 8 passes through the cover of the coupling magnetic cylinder cross bridge housing and is rotatably connected to it through a bearing.

[0034] The output end of the coupling magnetic cylinder rotor shaft 8 is connected and installed with a planetary reducer 10. The planetary reducer 10 includes an outer gear disk bracket 101, a central gear 102, three planetary gears 103 and a planetary gear output shaft 105. Among them, the right end of the outer gear disk bracket 101 is fixedly connected to the left end of the above-mentioned coupling magnetic cylinder cross bridge housing 9 by bolts, and an internal gear ring 104 is provided on the inner side wall of its circumference; the planetary gear output shaft 105 extends from the left end of the outer gear disk bracket 101 and is rotatably connected to it through a bearing. Figure 11 As shown, the longitudinal cross-section of the central axis of the planetary gear output shaft 105 is in a horizontally lying T shape, and a planetary gear disk 108 integrally formed with it is provided at its right end. The planetary gear disk 108 is placed inside the above-mentioned outer gear disk bracket 101; three shaft holes arranged at equal intervals in the circumferential direction are provided on the planetary gear disk 108, and a planetary gear shaft 106 with a threaded end is fixed in each shaft hole by a nut. The above-mentioned three planetary gears 103 are respectively rotatably installed coaxially on the corresponding planetary gear shafts 106 and can rotate and mesh with the above-mentioned internal gear ring 104; the central gear 102 is coaxially fixedly installed on the left end of the above-mentioned coupling magnetic cylinder rotor shaft 8 by a key, placed between the above-mentioned three planetary gears 103, and can mesh with the above-mentioned three planetary gears 103, as Figure 4 shown; during the rotation process, the left end of the coupling magnetic cylinder rotor shaft 8 is always not in direct contact with the right end of the planetary gear output shaft 105, and the left end of the planetary gear output shaft 105 is provided with a spline and an external thread for fixedly connecting with a wheel component.

[0035] The magnetoelectric coupling transmission power device on the right side is symmetrical to the description of the above-mentioned magnetoelectric coupling transmission power device on the left side, and will not be elaborated here.

[0036] The specific working principle is as follows: The front end opening of the above-mentioned main axle housing 1 is connected to the power source input device. The central power transmission gear 2 is driven to rotate through gear transmission, and then the transmission half shaft 3 fixedly connected coaxially therewith is driven to rotate. When the transmission half shaft 3 rotates, the inner rotor 6 of the coupling coil is driven to rotate. The copper winding coil 61 thereon cuts the magnetic field generated by the permanent magnet on the outer rotor 7 of the coupling magnetic cylinder, generating an induced current in the coil. Subsequently, it is transmitted to the conductive slip ring 4 through the phase line connection. The conductive slip ring 4 is in electrical contact connection with the carbon brush on its outer side, and the carbon brush is connected to the energy storage device through an external circuit, thereby realizing electric energy output. When electric energy is output, a current output flow is generated on the inner rotor 6 of the coupling coil. Subsequently, a magnetic force is generated on the copper winding coil 61 of the inner rotor 6 of the coupling coil, interacting with the magnetic force generated by the permanent magnet on the outer rotor 7 of the above-mentioned coupling magnetic cylinder, thereby driving the outer rotor 7 of the coupling magnetic cylinder to rotate. The coupling magnetic cylinder rotor shaft 8 fixedly connected thereto rotates synchronously, and then drives the central gear 102 to rotate. Subsequently, the planetary gear 103 engaged therewith rotates along the internal gear ring 104, thereby driving the planetary gear output shaft 105 to rotate, and then driving the external wheel to rotate, realizing kinetic energy output.

[0037] The setting of the planetary reducer 10 can effectively adjust the output speed and increase the power output torque. The output speed and torque of the magnetoelectric coupling power transmission device are directly proportional to the output of the recovered current. When there is no current output, its coupling force is almost zero. Under the action of the load, the above-mentioned coupling magnetic cylinder rotor shaft 8 and the outer rotor 7 of the coupling magnetic cylinder remain stationary and there is no power output. When the vehicle needs to turn, by controlling the magnitude of the current output of the conductive slip ring 4 in the magnetoelectric coupling power transmission device through the intelligent electronic control system, the magnitude of the magnetic force generated by the inner rotor 6 of the coupling coil can be controlled, thereby controlling the rotation speed of the outer rotor 7 of the coupling magnetic cylinder, realizing the output of different rotation speeds and torques, and then realizing flexible turning.

[0038] In a further optimized technical solution, a plurality of long strip-shaped heat dissipation holes are provided on the coupling magnetic cylinder cross bridge housing 9 to prevent overheating during rotation and burning out the motor.

[0039] For the related technical features not described in detail in the above embodiments or not shown in the drawings, the relevant technical solutions in the prior art can be adopted or borrowed to achieve them.

[0040] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. Dual-direction magnetoelectric coupling power transmission axle, characterized in that: It includes an intermediate power input device and two magnetoelectric coupling power transmission devices symmetrically arranged on both sides thereof. The intermediate power input device includes a vehicle bridge main housing (1) and a central power transmission gear (2) rotatably installed inside it. The front end of the vehicle bridge main housing (1) is open. The two magnetoelectric coupling power transmission devices have the same structure and both include a transmission half shaft (3), a conductive slip ring (4), a carbon brush, a half shaft connecting cross bridge (5), a coupling coil inner rotor (6), a coupling magnetic cylinder outer rotor (7), a coupling magnetic cylinder rotor shaft (8), a coupling magnetic cylinder cross bridge housing (9), and a planetary reducer (10). One end of the transmission half shaft (3) is coaxially and fixedly connected to the wheel shaft end of the above-mentioned central power transmission gear (2), and the other end is coaxially and fixedly connected to the coupling coil inner rotor (6). The coupling magnetic cylinder outer rotor (7) is coaxially sleeved outside the coupling coil inner rotor (6), and the coupling magnetic cylinder rotor shaft (8) is coaxially fixed to the end side of the coupling magnetic cylinder outer rotor (7) facing away from the transmission half shaft (3). The conductive slip ring (4) is also coaxially sleeved and fixed on the transmission half shaft (3), is arranged at an interval from the above-mentioned coupling coil inner rotor (6), and is connected by a circuit. A carbon brush is arranged on the outside of the conductive slip ring (4). One end of the above-mentioned half shaft connecting cross bridge (5) is fixedly connected to the vehicle bridge main housing (1) and is placed outside the transmission half shaft (3), and the other end is fixedly connected to the coupling magnetic cylinder cross bridge housing (9). The coupling magnetic cylinder cross bridge housing (9) is placed outside the above-mentioned coupling magnetic cylinder outer rotor (7). The output end of the coupling magnetic cylinder rotor shaft (8) is connected and installed with a planetary reducer (10).

2. The two-way magnetoelectric coupling transmission power axle according to claim 1, characterized in that: The planetary reducer (10) is installed on the side of the coupling magnetic cylinder cross bridge housing (9) away from the intermediate power input device and includes an outer gear disc bracket (101), a central gear (102), a plurality of planetary gears (103), and a planetary gear output shaft (105). The outer gear disc bracket (101) is fixedly connected to the above-mentioned coupling magnetic cylinder cross bridge housing (9), and an internal gear ring (104) is provided on its inner side wall. The planetary gear output shaft (105) coaxially passes through the outer gear disc bracket (101) and is rotatably connected to it. One end of the planetary gear output shaft (105) located inside the outer gear disc bracket (101) is installed with a planetary gear (103), and the planetary gear (103) meshes with the above-mentioned internal gear ring (104). The central gear (102) is coaxially fixed to the end of the above-mentioned coupling magnetic cylinder rotor shaft (8) away from the transmission half shaft (3) and is placed between the above-mentioned plurality of planetary gears (103) and meshes with them.

3. The two-way magnetoelectric coupling transmission power axle according to claim 1, wherein: The vehicle bridge main housing (1) includes a left vehicle bridge housing and a right vehicle bridge housing that are symmetrical to each other. The two are butt-jointed and fixed by bolts. Its front end is open and connected to a power source input device. One end of the above-mentioned half shaft connecting cross bridge (5) is provided with a half shaft sleeve. When the half shaft connecting cross bridge (5) is fixedly connected to the vehicle bridge main housing (1), the half shaft sleeve is inserted into the vehicle bridge main housing (1), and a bearing is coaxially fixed inside it. The wheel shaft end of the above-mentioned central power transmission gear (2) is coaxially installed in the inner ring of the bearing.

4. The bidirectional magnetoelectric coupling transmission power axle according to claim 2, characterized in that: A coaxial embedded keyway cavity (21) is provided at the wheel shaft end of the central power transmission gear (2). A spline (31) is provided at one end of the transmission half shaft (3) close to the central power transmission gear (2), and is coaxially inserted and fixed into the embedded keyway cavity (21). One end of the transmission half shaft (3) far from the central power transmission gear (2) is in a boss shape, and a coaxial embedded cavity (33) is provided at its end. The inner rotor (6) of the coupling coil is coaxially sleeved on the boss and fixed by screws.

5. The bidirectional magnetoelectric coupling transmission power axle according to claim 4, wherein: One end of the coupling magnet cylinder rotor shaft (8) close to the transmission half shaft (3) is coaxially inserted into the embedded cavity (33) and is rotationally connected through a bearing. A magnet cylinder fixing disk (81) is coaxially fixed on the coupling magnet cylinder rotor shaft (8). The outer rotor (7) of the coupling magnet cylinder is sleeved on the coupling magnet cylinder rotor shaft (8) and is fixedly connected to the magnet cylinder fixing disk (81) by screws. One end of the coupling magnet cylinder rotor shaft (8) far from the transmission half shaft (3) is coaxially fixed with a central gear (102) through a key.

6. The bidirectional magnetoelectric coupling transmission power axle according to claim 1, wherein: The carbon brush is fixed on the circumferential inner side wall of the half shaft connecting cross bridge (5) through a carbon brush bracket and is in electrical contact with the conductive slip ring (4); and is connected to a power storage device through an external circuit.

7. The two-way magnetoelectric coupling transmission power axle according to claim 2, characterized in that: One end of the planetary gear output shaft (105) close to the coupling magnet cylinder rotor shaft (8) is provided with a coaxial planetary gear disk (108) which is integrally formed. Three planetary gear shafts (106) are arranged at equal intervals along its circumference and fixed thereon. The planetary gears (103) are coaxially installed on the corresponding planetary gear shafts (106) through bearings; the planetary gear disk (108) has no direct contact with the coupling magnet cylinder rotor shaft (8).

8. The bidirectional magnetoelectric coupling transmission power axle according to claim 7, characterized in that: The planetary gear output shaft (105) and the outer gear disk bracket (101) are coaxially rotatably connected through a bearing, and the planetary gear disk (108) is placed inside the outer gear disk bracket (101).

9. The bidirectional magnetoelectric coupling transmission power axle according to claim 1, characterized in that: The inner rotor (6) of the coupling coil includes a plurality of radial copper winding coils (61) arranged along its circumference; a plurality of permanent magnets are fixed on the circumferential inner side wall of the cylinder body of the outer rotor (7) of the coupling magnet cylinder and are arranged at equal intervals along its circumference. A gap is left between the inner side of the permanent magnet and the outer circumference of the radial copper winding coil (61), and the inner rotor (6) of the coupling coil and the outer rotor (7) of the coupling magnet cylinder can rotate relative to each other.

10. The two-way magnetoelectric coupling transmission power axle according to claim 1, characterized in that: A plurality of heat dissipation holes are provided on the coupling magnet cylinder cross bridge housing (9).

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