CN220527813U - Piezoelectric-mechanical electromagnetic composite type vibration energy feedback device for electric tractor - Google Patents

Abstract

A piezoelectric-mechanical electromagnetic composite type electric tractor vibration energy feedback device comprises a piezoelectric energy feedback module, a mechanical electromagnetic energy feedback module, an upper box body, a first damping spring, annular balls, a lower box body, a second damping spring and a baffle plate; the top of the upper box body is used for being connected with a battery pack of the electric tractor; the bottom of the lower box body is connected with a chassis of the electric tractor; a piezoelectric energy feedback module is arranged in the lower box body; the mechanical electromagnetic energy feeding module is arranged in the lower box body; the bottom of the first damping spring is arranged on the lower box body, and the top of the first damping spring is connected with the upper box body; the upper box body and the lower box body are connected through the annular balls and the baffle plate, so that the upper box body vibrates up and down relative to the lower box body. The bottom of the second damping spring is arranged on the piezoelectric energy feedback module, and the top of the second damping spring is connected with the upper box body. The utility model has the characteristics of compact and reliable structure, high energy recovery efficiency and shock absorption function.

Description

A piezoelectric-mechanical electromagnetic composite electric tractor vibration energy feeding device

Technical field

The utility model relates to the technical field of electric vehicle vibration energy recovery, and in particular to a piezoelectric-mechanical electromagnetic composite electric tractor vibration energy feeding device.

Background technique

At present, due to the low energy density of power batteries, the cruising range and working efficiency of electric tractors are subject to certain limitations. Electric tractors will encounter ditches, climbing ridges, and muddy conditions during driving. The vehicle body will produce strong vibrations under the stimulation of the ground, which creates favorable conditions for the capture and reuse of vibration energy. Compared with road excitation, field ground excitation has broadband and large-amplitude characteristics. Therefore, an electric tractor vibration energy feeding device that adapts to the frequency band and has high recovery efficiency is needed to convert the wasted vibration energy into electrical energy to charge the power battery, thereby improving the electric power efficiency. Tractor range.

At present, the structures of electric vehicle energy feeding devices are mainly divided into crank connecting rod type, linear motor type, hydraulic type, ball screw type, and rolling type. Analyzing various structural forms, it can be found that the crank-connecting rod type is large in size and is not conducive to space layout; the linear motor type has the disadvantages of poor damping effect and relatively low reliability; the hydraulic type suffers from hydraulic oil loss and frictional heat generation. The mechanical efficiency is low; the ball screw type is relatively small in size and the damping force basically meets the requirements, but the efficiency of the transmission part is low; the rolling type piezoelectric structure is compact, but the energy conversion rate is insufficient due to its transmission form. At the same time, most current energy feeding devices only use a single energy conversion mechanism, and the energy recovery efficiency is low.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a piezoelectric-mechanical electromagnetic composite electric tractor vibration energy feeding device, which has the characteristics of compact and reliable structure, high energy recovery efficiency and shock absorption effect.

In order to achieve the above purpose, the technical solution adopted by this utility model is:

A piezoelectric-mechanical electromagnetic composite electric tractor vibration energy feeding device, including a piezoelectric energy feeding module A, a mechanical electromagnetic energy feeding module B, an upper box 1, a first damping spring 2, annular balls 3, and a lower box 4. The second shock absorbing spring 10 and the baffle 9;

The top of the upper box 1 is used to connect the battery pack of the electric tractor; the bottom of the lower box 4 is connected to the chassis of the electric tractor;

The piezoelectric energy feeding module A and the mechanical electromagnetic energy feeding module B are installed inside the lower box 4;

The bottom of the first shock-absorbing spring 2 is arranged on the lower box 4, and the top is connected to the upper box 1; the annular surface of the annular ball 3 is vertical, and the baffle 9 is a vertical baffle. The upper box 1 and the lower box 4 are connected through the annular ball 3 and the baffle 9 so that the upper box 1 can vibrate up and down relative to the lower box 4;

The bottom of the second damping spring 10 is disposed on the upper cover 7 of the piezoelectric energy feeding module A, and the top is connected to the eighth connecting rod 41 of the upper box 1 .

The upper box 1 includes a first connecting rod 31, a second connecting rod 32, a third connecting rod 36, a fourth connecting rod 37, a fifth connecting rod 38, a sixth connecting rod 39, a seventh connecting rod 40. The eighth connecting rod 41, the ninth connecting rod 42, the tenth connecting rod 43, the deep groove ball bearing 44, the first bearing seat 11, the second bearing seat 8, and the third bearing seat 15;

The connecting rods are all rectangular hollow steel pipes. The first connecting rod 31 and the fourth connecting rod 37 are provided below the sixth connecting rod 39 for fixing the two ends of the second connecting rod 32 and the third connecting rod 36 . end; the ninth connecting rod 42 and the tenth connecting rod 43 are provided between the two fourth connecting rods 37, respectively used to install the first bearing seat 11 and the third bearing seat 15; the second bearing seat 8 The two ends of are respectively installed on the ninth connecting rod 42 and the tenth connecting rod 43; the fifth connecting rod 38 is used to connect and fix the ninth connecting rod 42 and the tenth connecting rod 43; the sixth connecting rod 39 Connected end-to-end with the seventh connecting rod 40, the eighth connecting rod 41 is provided on the sixth connecting rod 39 for connecting the battery pack of the electric tractor; the deep groove ball bearing 44 is installed on the first bearing seat 11, the The second bearing seat 8 and the third bearing seat 15 are respectively used to install the gear shaft 13 and the second bevel gear shaft 26.

The lower box 4 includes an eleventh connecting rod 45, a twelfth connecting rod 46, a thirteenth connecting rod 47, a fourteenth connecting rod 48, a fifteenth connecting rod 49, a sixteenth connecting rod 50, a Seventeenth connecting rod 51, eighteenth connecting rod 52, nineteenth connecting rod 53, twentieth connecting rod 54, twenty-first connecting rod 55, twenty-second connecting rod 56 and twenty-third connecting rod 57 ;

The connecting rods are all rectangular hollow steel pipes. The twenty-third connecting rod 57 and the twelfth connecting rod 46 are connected end to end to form the bottom of the lower box 4. The eighteenth connecting rod 52 and the nineteenth connecting rod 53 are connected end to end to form the top of the lower box 4; the eleventh connecting rod 45 and the fifteenth connecting rod 49 are provided at the bottom of the lower box 4 for connecting the top of the lower box 4; the thirteenth The connecting rod 47, the fourteenth connecting rod 48 and the sixteenth connecting rod 50 are arranged on the twelfth connecting rod 46 at the bottom of the lower box 4, where the thirteenth connecting rod 47 and the fourteenth connecting rod 48 are used for The lower bottom plate 18 of the piezoelectric energy feeding module A is installed; both ends of the seventeenth connecting rod 51 are provided on the sixteenth connecting rod 50 for fixing the bottom of the twenty-second connecting rod 56; so One end of the twenty-first connecting rod 55 is arranged on the twentieth connecting rod 54, and one end is used to fix the back of the twenty-second connecting rod 56; the twenty-second connecting rod 56 is used to install the rack 29.

The bottom of the first shock absorbing spring 2 is installed on the fourteenth connecting rod 48 of the lower box 4 , and the top is connected to the eighth connecting rod 41 of the upper box 1 .

The annular ball 3 includes a guide rail 33, a ball 34 and a base 35. The ball 34 is installed in the guide rail 33 and rotates along the guide rail 33. The guide rail 33 is installed on the base 35. The base 33 is installed on the upper box 1. on the second connecting rod 32 and the third connecting rod 36.

The baffle 9 is provided on the fifteenth connecting rod 49 of the lower box 4 and is connected with the annular ball 3 so that the annular ball 3 can roll up and down along the baffle 9 .

The piezoelectric energy feeding module A includes a protection plate 5, a third shock absorbing spring 6, an upper cover 7, a long column 16, a fulcrum 17, a lower bottom plate 18, a lever 19, a short column 20, a piezoelectric base 21, a piezoelectric Ceramic 22 and buffer spring 23;

The piezoelectric energy feeding module A is installed on the thirteenth connecting rod 47 and the fourteenth connecting rod 48 of the lower box 4; the upper cover plate 7, the lower bottom plate 18 and the protective plate 5 are all rectangular steel plates, and the lower bottom plate 18 It is connected to the protective plate 5; the bottom of the upper cover plate 7 is connected to the protective plate 5 through the third shock absorbing spring 6, so that the upper cover plate 7 vibrates up and down; the piezoelectric base 21 is installed on the long column 16 and the short column 20, the piezoelectric ceramic 22 is disposed on the piezoelectric base 21; the fulcrum 17 is disposed at the bottom 1/3 groove of the lever 19, and the lever 19 can rotate up and down along the fulcrum 17; The bottom of the long column 16 is hinged with the lever 19, and is used to trigger the lever 19 to rotate downward; the short column 20 is provided on the lever 19, and is used to drive the piezoelectric base 21 to rotate upward and compress the buffer spring 23; The bottom of the buffer spring 23 is arranged on the short column 20 , and the top is connected to the bottom of the upper cover 7 .

The mechanical electromagnetic energy feeding module B includes a gear shaft 13, a rack 29, a first bevel gear 12, a second bevel gear 27, a second bevel gear shaft 26, a third bevel gear 14, a first one-way clutch 28, and a third bevel gear 14. Two one-way clutches 30, couplings 24 and DC generators 25; both ends of the gear shaft 13 of the mechanical electromagnetic energy feeding module B are installed on the first bearing seat 11 and the third bearing seat 11 through the deep groove ball bearings 44. Inside the bearing seat 15; the second bevel gear shaft 26 is installed inside the second bearing seat 8 through the deep groove ball bearing 44; the rack 29 meshes with the gear shaft 13, and the rack 29 The lower end is fixed on the seventeenth connecting rod 51 of the lower box 4, and the back is fixed on the twenty-second connecting rod 56 of the lower box 4; the first bevel gear 12 and the third bevel gear 14 pass through the first one-way The clutch 28 and the second one-way clutch 30 are installed on the gear shaft 13, and both mesh with the second bevel gear 27 at the same time; the second bevel gear shaft 26 is connected to the second bevel gear shaft 26 through the coupling 24. DC generator 25 connections.

The eighth connecting rod 41 of the upper box 1 is connected to the electric tractor lithium battery pack through a hinge, and the twenty-third connecting rod 57 of the lower box 4 is connected to the electric tractor chassis through a hinge.

Beneficial effects of this utility model:

1. The device of this utility model can convert the vibration energy generated during the driving of the electric tractor into electric energy, and provide electric energy supply for the power battery to extend the cruising range of the electric tractor.

2. The device of this utility model can reduce the impact and vibration of the power battery pack and improve the safety of the electric tractor battery pack.

3. The device of this utility model has a compact and reliable structure, high energy recovery efficiency, wide bandwidth adaptability, fast response, reliable structure, good shock absorption and easy layout.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a structural front view of the utility model.

Figure 3 is a structural cross-sectional view of the piezoelectric energy feeding module of the present invention.

Figure 4 is a schematic structural diagram of the mechanical electromagnetic energy feeding module of the present invention.

Figure 5 is a schematic structural diagram of the upper box body of the present utility model.

Figure 6 is a schematic structural diagram of the lower box of the present invention.

In the drawings, the components represented by each number are as follows: piezoelectric energy feeding module A, mechanical electromagnetic energy feeding module B, upper box 1, first damping spring 2, annular ball 3, lower box 4, protective plate 5 , third damping spring 6, upper cover 7, second bearing seat 8, baffle 9, second damping spring 10, first bearing seat 11, first bevel gear 12, gear shaft 13, third bevel gear 14. Third bearing seat 15, long column 16, fulcrum 17, lower base plate 18, lever 19, short column 20, piezoelectric base 21, piezoelectric ceramics 22, buffer spring 23, coupling 24, DC generator 25, Second bevel gear shaft 26, second bevel gear 27, first one-way clutch 28, rack 29, second one-way clutch 30, first connecting rod 31, second connecting rod 32, guide rail 33, ball 34, base 35. The third connecting rod 36, the fourth connecting rod 37, the fifth connecting rod 38, the sixth connecting rod 39, the seventh connecting rod 40, the eighth connecting rod 41, the ninth connecting rod 42, the tenth connecting rod 43, Deep groove ball bearing 44, eleventh connecting rod 45, twelfth connecting rod 46, thirteenth connecting rod 47, fourteenth connecting rod 48, fifteenth connecting rod 49, sixteenth connecting rod 50, tenth The seventh connecting rod 51 , the eighteenth connecting rod 52 , the nineteenth connecting rod 53 , the twentieth connecting rod 54 , the twenty-first connecting rod 55 , the twenty-second connecting rod 56 and the twenty-third connecting rod 57 .

Detailed ways

The utility model will be further described in detail below in conjunction with the examples.

A piezoelectric-mechanical electromagnetic composite electric tractor vibration energy feeding device, which is composed of the following parts: piezoelectric energy feeding module A, mechanical electromagnetic energy feeding module B, upper box 1, first shock absorbing spring 2, annular ball 3 , lower box 4, second shock absorbing spring 10 and baffle 9;

The eighth connecting rod 41 of the upper box 1 is connected to the electric tractor lithium battery pack through a hinge, and the twenty-third connecting rod 57 of the lower box 4 is connected to the electric tractor chassis through a hinge.

In this embodiment, the upper box and the lower box are welded by square steel of different sizes.

In order to facilitate understanding of the working process of the device of the present utility model, the working process of the present utility model is described as follows:

The first bearing seat 11, the second bearing seat 8 and the third bearing seat 15 described in Figure 1 are connected and fixed to the upper box through hinges. One end of the gear shaft 13 is installed on the third bearing seat through a deep groove ball bearing 44. In one bearing seat 15, the other end is installed in the third bearing seat 15; the second bevel gear is installed in the second bearing seat through a deep groove ball bearing 44; the back side of the rack 29 is fixed on on the twenty-second connecting rod 56 of the lower box 4; the first damping spring 2 is fixed between the upper and lower boxes 4, and the second damping spring 10 is fixed on the eighth connecting rod of the upper box 1 41 and the upper cover 7 provide a restoring force for the upward vibration of the upper box 1.

In Figure 2, A is the piezoelectric energy feeding module, and B is the mechanical electromagnetic energy feeding module; the annular ball 3 is installed on the upper box 1, and the baffle 9 is welded to the fifteenth connection of the lower box 4 On the rod 49, the upper box 1 can vibrate up and down along the baffle 9 through the annular balls 3.

The third shock absorbing spring 6 in Figure 3 is fixed between the upper cover 7 and the protective plate 5, and the upper cover can vibrate up and down; the upper end surface of the long column 16 is in contact with the upper cover 7, and when the upper cover 7 When vibrating downward, the left end of the lever 19 is driven to rotate downward along the fulcrum 17, and the right end of the lever 19 drives the short column 20 to move upward. In this process, the piezoelectric base 21 bends upward and deforms, driving the piezoelectric ceramic 22 to deform. , thereby causing the piezoelectric effect to generate electrical energy; the buffer spring 23 is a lightweight spring, used to absorb part of the vibration to improve the safety of the device, and provide a restoring force to quickly return the lever 19 to the equilibrium position.

In Figure 4, the gear shaft 13 moves up and down with the upper box 1, meshes with the rack 29, and then the power is input to the gear shaft 13; since it is installed on the first bevel gear 12 and the third The action of the first one-way clutch 28 and the second one-way clutch 30 in the bevel gear 12 causes the gear shaft 13 to transmit power in only one direction, and the other rotation direction is idling; when the upper box moves downward, the first The bevel gear 12 serves as a driving wheel to transmit power to the second bevel gear 27; when the upper box body moves upward, the third bevel gear 12 serves as a driving wheel to transmit power to the second bevel gear 27; so the second bevel gear 27 serves as a driving wheel. The gear 27 always rotates in one direction, and then drives the generator 25 to continuously work to generate electric energy through the coupling 24.

Through the device of the utility model, part of the vibration energy generated by the electric tractor during driving can be input to the mechanical electromagnetic module, and the power can be output to the power generation through the rack and pinion transmission, the first bevel gear, the second bevel gear and the third bevel gear transmission. The machine generates electrical energy; the other part is sent to the piezoelectric energy feed module, which drives the long column to rotate through the upper cover plate, and transmits the power to the left end of the lever, and then the right end of the lever drives the short column to move upward, causing the piezoelectric ceramic to deform and produce a piezoelectric effect. Finally, electrical energy is output; its electrical energy and the electrical energy generated by the mechanical electromagnetic energy feeding module are finally combined to charge the power battery.

According to the two-way vibration of the body, the movement of the upper box is divided into the down stroke and the up stroke:

Downward stroke: During the downward movement of the upper box 1, on the one hand, the gear shaft 13 is driven to mesh with the rack 29. The gear shaft moves clockwise. At this time, the first bevel gear 12 serves as the driving wheel to transmit power through the bevel gear. Transferred to the second bevel gear 27, the second bevel gear 27 rotates counterclockwise at this time. Finally, the second bevel gear 27 drives the generator 25 to rotate counterclockwise through the coupling 24 to generate electric energy; on the other hand, the second shock absorbing spring 10. Transmit power to the upper cover plate 7. At this time, the second shock absorbing spring 10 and the third shock absorbing spring 6 are both in a compressed state. Then the upper cover plate drives the long column to rotate, transmitting the power to the left end of the lever to make the lever 19 move along the fulcrum 17. Rotate downward, and then the right end of the lever drives the short column to move upward, causing the piezoelectric ceramic to deform and produce a piezoelectric effect, ultimately generating electrical energy.

Upstroke: During the upward movement of the upper box 1, on the one hand, the gear shaft 13 is driven to mesh with the rack 29. The gear shaft 13 moves counterclockwise. At this time, the third bevel gear 14 serves as the driving wheel to transmit power through the bevel gear. It is transmitted to the second bevel gear 27, and the second bevel gear drives the generator to work through the coupling to generate electrical energy; on the other hand, during the upward movement of the upper box 1, the second shock absorber spring 10 and the third shock absorber spring 6 both In the recovery state, the third damping spring 6 exerts a recovery force on the upper cover 7 to move the upper cover upward, and the buffer spring 23 is also in the recovery state. During the upward movement of the upper cover 7, it exerts a recovery force on the right end of the lever to make the upper cover move upward. The lever 19 returns to the equilibrium state, and similarly the piezoelectric substrate and piezoelectric ceramics also return to the equilibrium position.

Claims (8)

1. A piezoelectric-mechanical electromagnetic composite electric tractor vibration energy feeding device, which is characterized in that it includes a piezoelectric energy feeding module (A), a mechanical electromagnetic energy feeding module (B), an upper box (1), a first Damping spring (2), annular ball (3), lower box (4), second damping spring (10) and baffle (9); The top of the upper box (1) is used to connect the battery pack of the electric tractor; the bottom of the lower box (4) is connected to the chassis of the electric tractor; The piezoelectric energy feeding module (A) and the mechanical electromagnetic energy feeding module (B) are installed inside the lower box (4); The bottom of the first shock-absorbing spring (2) is arranged on the lower box (4), and the top is connected to the upper box (1); the annular surface of the annular ball (3) is vertical, and the baffle ( 9) is a vertical baffle. The upper box (1) and the lower box (4) are connected through the annular ball (3) and the baffle (9), so that the upper box (1) ) can vibrate up and down relative to the lower box (4); The bottom of the second shock-absorbing spring (10) is arranged on the upper cover (7) of the piezoelectric energy feeding module (A), and the top is connected to the eighth connecting rod (41) of the upper box (1). ) are connected. 2. A piezoelectric-mechanical electromagnetic hybrid electric tractor vibration energy feeding device according to claim 1, characterized in that the upper box (1) includes a first connecting rod (31) and a second connecting rod. (32), the third connecting rod (36), the fourth connecting rod (37), the fifth connecting rod (38), the sixth connecting rod (39), the seventh connecting rod (40), the eighth connecting rod (41 ), ninth connecting rod (42), tenth connecting rod (43), deep groove ball bearing (44), first bearing seat (11), second bearing seat (8), third bearing seat (15); The connecting rods are all rectangular hollow steel pipes. The first connecting rod (31) and the fourth connecting rod (37) are provided below the sixth connecting rod (39) for fixing the second connecting rod (32). and both ends of the third connecting rod (36); the ninth connecting rod (42) and the tenth connecting rod (43) are provided between the two fourth connecting rods (37), and are respectively used to install the first bearing. seat (11) and the third bearing seat (15); the two ends of the second bearing seat (8) are respectively installed on the ninth connecting rod (42) and the tenth connecting rod (43); the fifth connecting rod The rod (38) is used to connect and fix the ninth connecting rod (42) and the tenth connecting rod (43); the sixth connecting rod (39) and the seventh connecting rod (40) are connected end to end, and the eighth connecting rod (40) is connected end to end. The rod (41) is provided on the sixth connecting rod (39) and is used to connect the battery pack of the electric tractor; the deep groove ball bearing (44) is installed on the first bearing seat (11) and the second bearing seat (8) and the third bearing seat (15), respectively used to install the gear shaft (13) and the second bevel gear shaft (26). 3. A piezoelectric-mechanical electromagnetic compound electric tractor vibration energy feeding device according to claim 1, characterized in that the lower box (4) includes an eleventh connecting rod (45), a twelfth Connecting rod (46), thirteenth connecting rod (47), fourteenth connecting rod (48), fifteenth connecting rod (49), sixteenth connecting rod (50), seventeenth connecting rod (51) , the eighteenth connecting rod (52), the nineteenth connecting rod (53), the twentieth connecting rod (54), the twenty-first connecting rod (55), the twenty-second connecting rod (56) and the second Thirteen connecting rods (57); The connecting rods are all rectangular hollow steel pipes. The twenty-third connecting rod (57) and the twelfth connecting rod (46) are connected end to end to form the bottom of the lower box (4). The eighteenth connecting rod ( 52) is connected end-to-end with the nineteenth connecting rod (53) to form the top of the lower box (4); the eleventh connecting rod (45) and the fifteenth connecting rod (49) are arranged on the lower box (4) The bottom is used to connect the top of the lower box (4); the thirteenth connecting rod (47), the fourteenth connecting rod (48) and the sixteenth connecting rod (50) are arranged on the lower box (4) ) on the twelfth connecting rod (46) at the bottom, where the thirteenth connecting rod (47) and the fourteenth connecting rod (48) are used to install the lower bottom plate (18) of the piezoelectric energy feeding module (A) ); both ends of the seventeenth connecting rod (51) are provided on the sixteenth connecting rod (50) for fixing the bottom of the twenty-second connecting rod (56); the twenty-first connecting rod One end of the rod (55) is arranged on the twentieth connecting rod (54), and one end is used to fix the back of the twenty-second connecting rod (56); the twenty-second connecting rod (56) is used to install the rack (29) ). 4. A piezoelectric-mechanical electromagnetic hybrid electric tractor vibration energy feeding device according to claim 3, characterized in that the bottom of the first damping spring (2) is installed on the lower box (4 ), the top is connected to the eighth connecting rod (41) of the upper box (1). 5. A piezoelectric-mechanical electromagnetic compound electric tractor vibration energy feeding device according to claim 3, characterized in that the annular ball (3) includes a guide rail (33), a ball (34) and a base (35) ), the ball (34) is installed in the guide rail (33) and rotates along the guide rail (33). The guide rail (33) is installed on the base (35), and the base (35) is installed on the upper box (1). ) on the second connecting rod (32) and the third connecting rod (36). 6. A piezoelectric-mechanical electromagnetic hybrid electric tractor vibration energy feeding device according to claim 3, characterized in that the baffle (9) is provided on the fifteenth connecting rod of the lower box (4) (49) is connected with the annular ball (3), so that the annular ball (3) can roll up and down along the baffle (9). 7. A piezoelectric-mechanical electromagnetic compound electric tractor vibration energy feeding device according to claim 3, characterized in that the piezoelectric energy feeding module (A) includes a protection plate (5), a third shock absorber Spring (6), upper cover (7), long column (16), fulcrum (17), lower bottom plate (18), lever (19), short column (20), piezoelectric substrate (21), piezoelectric ceramics (22) and buffer spring (23); The piezoelectric energy feeding module (A) is installed on the thirteenth connecting rod (47) and the fourteenth connecting rod (48) of the lower box (4); the upper cover plate (7) and the lower bottom plate (18) and the protective plate (5) are both rectangular steel plates, and the lower bottom plate (18) is connected to the protective plate (5); the bottom of the upper cover plate (7) is connected to the protective plate (5) through a third shock-absorbing spring (6) , causing the upper cover (7) to reciprocate up and down; the piezoelectric base (21) is installed between the long column (16) and the short column (20), and the piezoelectric ceramic (22) is arranged on the piezoelectric On the base body (21); the fulcrum (17) is set at the bottom 1/3 groove of the lever (19), and the lever (19) can rotate up and down along the fulcrum (17); the long column (16) The bottom is hinged with the lever (19) and is used to trigger the lever (19) to rotate downward; the short column (20) is provided on the lever (19) and is used to drive the piezoelectric base (21) to rotate upward and compress Buffer spring (23); the bottom of the buffer spring (23) is arranged on the short column (20), and the top is connected to the bottom of the upper cover (7). 8. A piezoelectric-mechanical electromagnetic compound electric tractor vibration energy feeding device according to claim 2, characterized in that the mechanical electromagnetic energy feeding module (B) includes a gear shaft (13) and a rack (29) ), the first bevel gear (12), the second bevel gear (27), the second bevel gear shaft (26), the third bevel gear (14), the first one-way clutch (28), the second one-way clutch ( 30), coupling (24) and DC generator (25); both ends of the gear shaft (13) of the mechanical electromagnetic energy feed module (B) are installed on the first bearing seat (44) through deep groove ball bearings (44). 11) and the inside of the third bearing seat (15); the second bevel gear shaft (26) is installed inside the second bearing seat (8) through the deep groove ball bearing (44); the gear The rack (29) meshes with the gear shaft (13). The lower end of the rack (29) is fixed on the seventeenth connecting rod (51) of the lower box (4), and the back is fixed on the lower box (4). On the twenty-second connecting rod (56); the first bevel gear (12) and the third bevel gear (14) are installed on the said first bevel gear (12) and the third bevel gear (14) through the first one-way clutch (28) and the second one-way clutch (30) On the gear shaft (13), both mesh with the second bevel gear (27) at the same time; the second bevel gear shaft (26) communicates with the DC generator (25) through the coupling (24) )connect.