Drive system and working machine

Abstract

The application relates to the technical field of working machines, and discloses a driving system and a working machine, the driving system comprising: a first output part comprising a first output shaft and a first bevel gear; a second output part comprising a second output shaft and a second bevel gear; a transmission part comprising a transmission bevel gear and a planet carrier rotatable around an axis of rotation, the first bevel gear being in transmission cooperation with the second bevel gear through the transmission bevel gear; a first driving part in transmission cooperation with the first output part; and a second driving part, the second driving part being adapted to drive the planet carrier to rotate, the application adjusts the rotating speed of the planet carrier, so that the rotating speed of the planet carrier matches the first output shaft and rotates, the transmission bevel gear rotates around the axis of rotation at the same time of rotating around itself, the power of the first output part and the second output part can act on the first output shaft at the same time, the caterpillar track on the side of the first output shaft of the working machine can normally operate, and the working machine can move in a certain range in a bad terrain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of working machines, in particular to a driving system and a working machine. BACKGROUND

[0002] Due to the fact that the working environment in large mines is usually complex and harsh, in order to better complete the working task, the working machines in large mines are generally working machines with tracks. The track-type working machines are stronger than wheeled working machines in terms of speed and ability in harsh road conditions. The track-type working machines have strong obstacle crossing and crossing ability, stable movement, strong climbing ability, and strong load capacity.

[0003] At present, two independent driving units are generally provided on the existing track-type working machines, and each driving unit independently drives one side of the track. Due to the fact that the mine environment is complex, although the track-type working machines of this form can perform most of the operations, when the track-type working machine is trapped in a harsh terrain, it is difficult for one side of the driving unit to provide sufficient torque to escape, and thus the working machine cannot continue to work. Therefore, the existing track-type working machines have the problem of poor escape ability. SUMMARY

[0004] Therefore, the present application provides a driving system and a working machine to solve the problem of poor escape ability of the existing track-type working machines.

[0005] In a first aspect, the present application provides a driving system for driving a working machine with a track assembly, characterized in that it comprises: a first output portion comprising a first output shaft and a first bevel gear, the first bevel gear being arranged at one end of the first output shaft and rotating coaxially with the first output shaft, the first output portion being adapted to be drivingly connected with one side of the track assembly; a second output portion comprising a second output shaft and a second bevel gear, the second bevel gear being arranged at one end of the second output shaft and rotating coaxially with the second output shaft, the second bevel gear being arranged opposite to the first bevel gear with the same rotation axis, the second output portion being adapted to be drivingly connected with the other side of the track assembly; a transmission portion comprising a transmission bevel gear and a planet carrier rotatable about the rotation axis, the transmission bevel gear being rotatably arranged on the planet carrier, the first bevel gear being in transmission cooperation with the second bevel gear through the transmission bevel gear, the planet carrier having a rotating state of rotating about the rotation axis and driving the transmission bevel gear to revolve about the rotation axis, and a fixed state of being fixed relative to the rotation axis; a first driving portion in transmission cooperation with the first output portion, the first driving portion being adapted to drive the first output shaft to rotate; and a second driving portion in transmission cooperation with the transmission portion, the second driving portion being adapted to drive the planet carrier to rotate.

[0006] Beneficial effects: the first output part is in transmission cooperation with the second output part through the transmission part, the first output shaft is driven to rotate through the first driving part, the planet carrier is driven to rotate through the second driving part, the rotating cooperation relationship between the transmission bevel gear on the planet carrier and the first output shaft is controlled, the rotation of the first output shaft and the second output shaft can be controlled, when the working machine enters a harsh terrain and the steering torque on the side of the first output part cannot meet the demand, the rotation speed of the planet carrier is adjusted at this time, the rotation speed of the planet carrier is matched with the first output shaft and rotates at a preset rotation speed, the transmission bevel gear rotates around the rotation axis in the meantime of rotation, at this time, the second output shaft tends to be stationary and the power of the first output part and the second output part can act on the first output shaft at the same time, the torque of the first output shaft can be effectively increased, the track on the side of the first output shaft of the working machine can normally work, and the working machine can move in a certain range in the harsh terrain, gradually gets out of trouble, and the problem of poor trouble getting out capability of the existing track-type working machine is effectively solved.

[0007] In an optional implementation, the first driving part comprises a first driving member and a first driving wheel, the driving end of the first driving part is connected with the first driving wheel, and the first output part further comprises a first transmission wheel coaxially arranged on the first output shaft, the first driving wheel is in transmission cooperation with the first transmission wheel, and the first driving member drives the first output shaft to rotate through the first transmission wheel.

[0008] Beneficial effects: the transmission form is simple and reliable, and is convenient for processing, manufacturing and installation.

[0009] In an optional implementation, the radius of the first driving wheel is smaller than the radius of the first transmission wheel.

[0010] Beneficial effects: the first driving wheel and the first transmission wheel in this form can achieve the effect of speed reduction and torque increase when cooperating.

[0011] In an optional implementation, the second driving part comprises a second driving member and a second driving wheel, the driving end of the second driving part is connected with the second driving wheel, the outer ring of the planet carrier is provided with external teeth, the second driving wheel is in transmission cooperation with the planet carrier, and the second driving member drives the planet carrier to rotate through the second driving wheel.

[0012] Beneficial effects: the gear transmission form is stable and reliable, and is convenient for processing and manufacturing.

[0013] In an optional implementation, the planet carrier comprises a transmission frame and a mounting frame, the mounting frame is connected with the transmission frame, the outer ring of the transmission frame is provided with external teeth, the mounting frame is provided with a mounting position corresponding to the position between the first bevel gear and the second bevel gear, the transmission bevel gear is rotatably arranged in the mounting position, and the transmission frame is rotatably sleeved on the second output shaft.

[0014] Beneficial effects: the planetary carrier in this form can change the position of the transmission carrier on the second output shaft, thereby adjusting the matching position of the second driving wheel, making the internal structure designer more flexible.

[0015] In an alternative embodiment, the radius of the second driving wheel is smaller than the radius of the transmission carrier.

[0016] Beneficial effects: the second driving wheel and the transmission carrier in this form can achieve the effect of speed reduction and torque increase when matched.

[0017] In an alternative embodiment, the radius of the first driving wheel is consistent with the radius of the second driving wheel, and the radius of the first transmission wheel is consistent with the radius of the outer ring of the planetary carrier.

[0018] Beneficial effects: the transmission structure in this form is more convenient for the selection of specifications of the first driving member and the second driving member, and can simplify the control process of the speed ratio relationship under different gears.

[0019] In an alternative embodiment, the drive system further comprises a first drive box, a second drive box and a transmission box, the first drive box, the second drive box and the transmission box each have a mounting cavity inside, the first drive box and the second drive box are respectively arranged on both sides of the transmission box, the first output part, the second output part, the transmission part, the first driving wheel and the second driving wheel are arranged in the mounting cavity, the first driving member is arranged in the first drive box and connected with the first driving wheel, and the second driving member is arranged in the second drive box and connected with the second driving wheel.

[0020] Beneficial effects: this arrangement can separate the overall structure into multiple block structures, which is convenient for installation and maintenance.

[0021] In an alternative embodiment, the drive system further comprises a control structure, which is connected with the first driving part and the second driving part respectively to control the rotation state of the first output shaft and the planetary carrier.

[0022] Beneficial effects: through the control structure, the input power of the first driving part and the second driving part can be accurately and rapidly controlled according to the transmission relationship and the power demand issued by the driver.

[0023] In a second aspect, the application further provides a working machine, which comprises: a vehicle body; track assemblies arranged on both sides of the vehicle body and connected with the vehicle body; and the above-mentioned drive system arranged on one side of the vehicle body and in transmission connection with the track assemblies on both sides respectively. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the structure of a drive system according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of a portion of the structure of the drive system shown;

[0027] Figure 3 for Figure 1 A schematic structural diagram of the first output portion of the drive system shown;

[0028] Figure 4 for Figure 1 A schematic structural diagram of the second output portion of the drive system shown;

[0029] Figure 5 for Figure 1 A schematic structural diagram of the transmission part of the drive system shown;

[0030] Figure 6 for Figure 1 A diagram showing a relationship between the rotational speeds of the first drive unit and the second drive unit of the drive system shown;

[0031] Figure 7 Schematic diagram of the structural layout of a working machine according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. First output unit; 101. First output shaft; 102. First bevel gear; 103. First transmission wheel;

[0034] 2. Second output portion; 201. Second output shaft; 202. Second bevel gear;

[0035] 3. Transmission unit; 301. Transmission bevel gear; 302. Planet carrier; 3021. External gear; 3022. Transmission frame; 3023. Mounting frame;

[0036] 4. First driving unit; 401. First driving member; 402. First driving wheel;

[0037] 5. Second driving unit; 501. Second driving member; 502. Second driving wheel;

[0038] 601, first drive box; 602, second drive box; 603, transmission box;

[0039] 7, vehicle body; 8, track assembly. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0041] The embodiments of the present application are described below with reference to the drawings. Figures 1 to 7

[0042] According to the embodiments of the present application, in one aspect, a driving system for driving a working machine with a track assembly 8 is provided, the driving system comprising: a first output part 1, a second output part 2, a transmission part 3, a first driving part 4 and a second driving part 5, the first output part 1 comprising a first output shaft 101 and a first bevel gear 102, the first bevel gear 102 being disposed at one end of the first output shaft 101 and rotating coaxially with the first output shaft 101, the first output part 1 being adapted to be drivingly connected with one of the track assemblies 8; the second output part 2 comprising a second output shaft 201 and a second bevel gear 202, the second bevel gear 202 being disposed at one end of the second output shaft 201 and rotating coaxially with the second output shaft 201, the second bevel gear 202 being disposed opposite to the first bevel gear 102 with the same rotation axis, the second output part 2 being adapted to be drivingly connected with the other of the track assemblies 8; the transmission part 3 comprising a transmission bevel gear 301 and a planet carrier 302 rotating around the rotation axis, the transmission bevel gear 301 being rotatably disposed on the planet carrier 302, the first bevel gear 102 being drivingly engaged with the second bevel gear 202 through the transmission bevel gear 301, the planet carrier 302 having a rotating state of rotating around the rotation axis and driving the transmission bevel gear 301 to revolve around the rotation axis, and a fixed state of being fixed relative to the rotation axis; the first driving part 4 being drivingly engaged with the first output part 1, the first driving part 4 being adapted to drive the first output shaft 101 to rotate; the second driving part 5 being drivingly engaged with the transmission part 3, the second driving part 5 being adapted to drive the planet carrier 302 to rotate.

[0043] ​The driving system of the embodiment is applied, the first output part 1 is in transmission cooperation with the second output part 2 through the transmission part 3, the first output shaft 101 is driven to rotate through the first driving part 4, the planet carrier 302 is driven to rotate through the second driving part 5, the rotation cooperation relationship between the transmission bevel gear 301 on the planet carrier 302 and the first output shaft 101 is controlled, and then the rotation of the first output shaft 101 and the second output shaft 201 can be controlled. When the working machine enters a harsh terrain and the steering torque on the side of the first output part 1 cannot meet the demand, the rotation speed of the planet carrier 302 is adjusted at this time, the rotation speed of the planet carrier 302 is matched with the first output shaft 101, and the planet carrier 302 rotates at a preset rotation speed, so that the transmission bevel gear 301 rotates around the rotation axis while rotating, at this time, the second output shaft 201 tends to be stationary, and the power of the first output part 1 and the second output part 2 can act on the first output shaft 101 at the same time, which can effectively increase the torque of the first output shaft 101, so that the track on the side of the first output shaft 101 of the working machine can normally work, and then the working machine can move in a certain range in the harsh terrain, and gradually get out of the trouble, thereby effectively solving the problem of poor trouble getting out ability of the existing track-type working machine.

[0044] Specifically, since the track-type working machine will encounter various harsh terrains in the working process, in order to improve the working reliability and the ability to cope with harsh environments, the trouble getting out ability of the track-type working machine is very important. The trouble getting out ability of the track-type working machine does not mean that the tracks on both sides can rotate, but means that in a completely immobile environment, as long as the track on one side can rotate and can provide a certain moving ability for the whole vehicle, the track-type working machine can gradually move by rotating the angle, and then gradually get out of the trouble.

[0045] The driving system of the embodiment is applied, the first output part 1 is in transmission cooperation with the second output part 2 through the transmission part 3, the first output shaft 101 is driven to rotate through the first driving part 4, the planet carrier 302 is driven to rotate through the second driving part 5, the rotation cooperation relationship between the transmission bevel gear 301 on the planet carrier 302 and the first output shaft 101 is controlled, and then the rotation of the first output shaft 101 and the second output shaft 201 can be controlled. When the working machine enters a harsh terrain and the steering torque on the side of the first output part 1 cannot meet the demand, the rotation speed of the planet carrier 302 is adjusted at this time, the rotation speed of the planet carrier 302 is matched with the first output shaft 101, and the planet carrier 302 rotates at a preset rotation speed, so that the transmission bevel gear 301 rotates around the rotation axis while rotating, at this time, the second output shaft 201 tends to be stationary, and the power of the first output part 1 and the second output part 2 can act on the first output shaft 101 at the same time, which can effectively increase the torque of the first output shaft 101, so that the track on the side of the first output shaft 101 of the working machine can normally work, and then the working machine can move in a certain range in the harsh terrain, and gradually get out of the trouble, thereby effectively solving the problem of poor trouble getting out ability of the existing track-type working machine.

[0046] When the first output shaft 101 and the planet carrier 302 rotate in opposite directions at the same speed, the rotation speeds of the first output shaft 101 and the second output shaft 201 can be consistent but opposite, and the whole vehicle can make a U-turn.

[0047] When the first output shaft 101 and the planet carrier 302 rotate in the same direction, and the rotation speed of the first output shaft 101 is between 0.5 times and 1 times the rotation speed of the planet carrier 302, the rotation speed of the first output shaft 101 can be lower than that of the second output shaft 201, and the whole vehicle can turn to the side where the first output shaft 101 is located.

[0048] When the first output shaft 101 rotates with the planetary carrier 302, and the rotation speed of the planetary carrier 302 is between 0.5 times and 1 times the rotation speed of the first output shaft 101, the rotation speed of the second output shaft 201 can be output lower than the first output shaft 101, realizing the turning of the whole vehicle to the side where the second output shaft 201 is located.

[0049] When the crawler-type working machine needs to turn in the mud or is stuck in the mud, if the steering torque of the first output shaft 101 is not enough at this time, the rotation speed of the planetary carrier 302 can be adjusted to 0.5 times the rotation speed of the first output shaft 101. Since the steering torque on the side of the second output shaft 201 is also not enough, the crawler on the side of the second output shaft 201 will not rotate at this time, and the resistance formed when the second output shaft 201 remains stationary can make the steering torque of the planetary carrier 302 exerted to the first output shaft 101. At this time, the first output shaft 101 is driven by the first output part 1 and the second output part 2 at the same time, increasing the rotation torque of the first output shaft 101, and further enabling the crawler-type working machine to turn to the side of the second output shaft 201, and further enabling itself to move, improving the single-side turning ability and the escape ability of the crawler-type working machine.

[0050] In the related art, since the two independent drive units on the crawler-type working machine independently drive the crawler on one side, if the crawler on one side needs to have a larger driving torque to perform operations such as turning in place and turning on a slope, each drive unit on one side needs to have a larger torque and power to enable the crawler-type working machine to smoothly perform the operations such as turning in place and turning on a slope, thereby increasing the manufacturing difficulty of the whole vehicle.

[0051] The crawler-type working machine of the embodiment can effectively reduce the power of the single-side drive unit, and the power selection of the single-side drive unit can be reduced by half compared to the original power selection, thereby greatly saving the manufacturing cost and difficulty.

[0052] It should be noted that the crawler-type working machine in the mine operation can rotate through different direction turning working conditions of the single-side crawler, that is, the left turn and the right turn operations can be respectively completed. Therefore, although the drive system of the embodiment only enhances the steering torque output ability on one side, it can also realize the functions of left turn and right turn.

[0053] Further, in the related art, since two independent drive units on the track-type working machine independently drive one side track, in the process of advancing or retreating, due to factors such as road conditions, there will inevitably be differences in driving of the two drive units, so that the track-type working machine is not smooth in the process of advancing or retreating.

[0054] And the track-type working machine of the embodiment, since the first drive part 4 and the second drive part 5 rotate in the same direction and at the same speed when advancing and retreating, the power of the first drive part 4 and the second drive part 5 at this time is applied to the first output shaft 101 and the second output shaft 201 rotating coaxially at the same time, forming a double-input double-output drive form, which can make the track running more smoothly.

[0055] In the embodiment, the first drive part 4 includes a first drive member 401 and a first drive wheel 402, the driving end of the first drive part 4 is connected with the first drive wheel 402, and the first output part 1 further includes a first transmission wheel 103 coaxially arranged on the first output shaft 101, the first drive wheel 402 is in transmission cooperation with the first transmission wheel 103, the first drive member 401 drives the first output shaft 101 to rotate through the first transmission wheel 103, and the transmission form is simple and reliable, facilitating processing and manufacturing and installation.

[0056] Specifically, the matching relationship of the first drive wheel 402 and the first transmission wheel 103 is not strictly limited, and more size transmission wheels can be arranged therebetween to achieve the purpose of speed reduction and torque increase.

[0057] Specifically, the specific size of the first drive wheel 402 and the first transmission wheel 103 is not limited, and can be selected according to the specification size of the applied working machine, as long as the effect of speed reduction and torque increase can be achieved.

[0058] Specifically, the specific size of the first drive wheel 402 and the first transmission wheel 103 is not limited, and can be selected according to the specification size of the applied working machine, as long as the effect of speed reduction and torque increase can be achieved.

[0059] In the embodiment, the second drive part 5 includes a second drive member 501 and a second drive wheel 502, the driving end of the second drive part 5 is connected with the second drive wheel 502, the outer ring of the planetary carrier 302 is provided with an outer gear 3021, the second drive wheel 502 is in transmission cooperation with the planetary carrier 302, the second drive member 501 drives the planetary carrier 302 to rotate through the second drive wheel 502, and the gear transmission form is stable and reliable, facilitating processing and manufacturing.

[0060] Specifically, the specific type of the first drive member 401 and the second drive member 501 is not limited, which can be a motor, a hydraulic motor, etc., as long as it can drive the corresponding transmission component to rotate.

[0061] In the embodiment, the planet carrier 302 comprises a transmission carrier 3022 and a mounting carrier 3023, the mounting carrier 3023 is connected with the transmission carrier 3022, the outer ring of the transmission carrier 3022 is provided with external teeth 3021, the mounting carrier 3023 is provided with mounting positions corresponding to the positions between the first bevel gear 102 and the second bevel gear 202, the transmission bevel gears 301 are rotatably arranged in the mounting positions, and the transmission carrier 3022 is rotatably sleeved on the second output shaft 201. The planet carrier 302 in this form can adjust the matching positions of the second driving wheel 502 by changing the positions of the transmission carrier 3022 on the second output shaft 201, so that the internal structure designer is more flexible.

[0062] Specifically, as shown in Figure 2 , the transmission carrier 3022 is rotatably sleeved on the second output shaft 201, so that the transmission bevel gears 301 are in the central position, and the first driving wheel 402 and the second driving wheel 502 are uniformly distributed on both sides of the transmission bevel gears 301, so that the layout space inside the driving system can be more reasonably utilized.

[0063] Further, as shown in Figure 2 , the number of the transmission bevel gears 301 is two and they are oppositely arranged. The transmission bevel gears 301 in this form are more uniform and reliable in force when transmitting.

[0064] In the embodiment, the radius of the second driving wheel 502 is smaller than the radius of the transmission carrier 3022. The second driving wheel 502 and the transmission carrier 3022 in this form can achieve the effect of speed reduction and torque increase when matched.

[0065] Specifically, the specific sizes of the second driving wheel 502 and the transmission carrier 3022 are not limited, and can be selected according to the specifications and sizes of the applied working machine, as long as the effect of speed reduction and torque increase can be achieved.

[0066] In the embodiment, the radius of the first driving wheel 402 is consistent with the radius of the second driving wheel 502, and the radius of the first transmission wheel 103 is consistent with the radius of the outer ring of the planet carrier 302. The transmission structure in this form has a size that is more convenient for the specification selection of the first driving member 401 and the second driving member 501, and can simplify the control process of the speed ratio relationship under different gears.

[0067] Specifically, the power selection of the first driving member 401 and the second driving member 501 is consistent, and at this time, the relationship between the input speed and the output speed of the components of the driving system is as shown in Figure 6As shown, wherein the input A is the first driving member 401, the input B is the second driving member 501, the output A is the first output shaft 101, and the output B is the second output shaft 201; the rotational speed of the input A corresponds to that of the output A, and the directions are consistent; when the rotational speed of the input A is determined, the corresponding relationship between the output B (the ordinate) and the input B (the abscissa) is a slanting solid line;

[0068] VinputB=0, VinputA / iA=VoutputA=-VoutputB—Equation (A),

[0069] wherein VinputA is the speed of the input A, and iA is the speed ratio;

[0070] VinputA=0, VinputB / iB=VoutputA+VoutputB—Equation (B),

[0071] wherein VinputB is the speed of the input B, and iB is the speed ratio;

[0072] Through the addition and subtraction operation of Equation (A)+λ(B) (λ is any natural number from -1 to 1), the precise control of the two input states and the two output states can be realized, and the output torque of the first output shaft 101 can be doubled.

[0073] In the embodiment, the driving system further comprises a first driving box 601, a second driving box 602, and a transmission box 603, the first driving box 601, the second driving box 602, and the transmission box 603 each have an installation cavity inside, the first driving box 601 and the second driving box 602 are respectively arranged on the two sides of the transmission box 603, the first output part 1, the second output part 2, the transmission part 3, the first driving wheel 402, and the second driving wheel 502 are arranged in the installation cavity, the first driving member 401 is arranged in the first driving box 601 and connected with the first driving wheel 402, the second driving member 501 is arranged in the second driving box 602 and connected with the second driving wheel 502, the main transmission structure is arranged in the first driving box 601, and the first driving member 401 and the second driving member 501 are respectively arranged in the corresponding driving boxes, which can separate the overall structure into multiple block structures, facilitating installation and later maintenance and repair.

[0074] In the embodiment, the driving system further comprises a control structure, which is connected with the first driving part 4 and the second driving part 5 respectively to control the rotational state of the first output shaft 101 and the planet carrier 302, and can accurately and rapidly control the input power of the first driving part 4 and the second driving part 5 according to the transmission relationship and the power demand issued by the driver.

[0075] According to the embodiment of the present application, in another aspect, there is provided a working machine, comprising: a vehicle body 7, track assemblies 8 arranged on both sides of the vehicle body 7 and connected with the vehicle body 7, and the above-mentioned drive system arranged on one side of the vehicle body 7 and in transmission connection with the track assemblies 8 on both sides respectively.

[0076] In the embodiment, the working machine is an excavator, a crane or the like, as long as the track assemblies 8 can be applied.

[0077] In the embodiment, each track assembly 8 comprises a track and a driving wheel corresponding to driving the track to rotate, the first output shaft 101 and the second output shaft 201 of the drive system are in transmission connection with the driving wheel of the track assembly 8 on the corresponding side directly or indirectly through a speed reducer and related structures, thereby driving the corresponding track assembly 8 to operate normally.

[0078] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A drive system for driving a working machine having a crawler assembly (8), characterized in that include: A first output portion (1) comprises a first output shaft (101) and a first bevel gear (102), wherein the first bevel gear (102) is arranged at one end of the first output shaft (101) and rotates coaxially with the first output shaft (101), and the first output portion (1) is suitable for driving connection with a crawler track assembly (8) on one side; a second output portion (2), comprising a second output shaft (201) and a second bevel gear (202), wherein the second bevel gear (202) is arranged at one end of the second output shaft (201) and rotates coaxially with the second output shaft (201), the second bevel gear (202) and the first bevel gear (102) are arranged opposite to each other with the same rotation axis, and the second output portion (2) is suitable for being drivingly connected to the crawler assembly (8) on the other side thereof; A transmission portion (3) comprising a transmission bevel gear (301) and a planetary carrier (302) rotatable about the rotation axis, the transmission bevel gear (301) being rotatably disposed on the planetary carrier (302), the first bevel gear (102) being transmission-matched with the second bevel gear (202) via the transmission bevel gear (301), and the planetary carrier (302) having a rotational state in which it rotates about the rotation axis and drives the transmission bevel gear (301) to revolve about the rotation axis, and a fixed state in which it is fixed relative to the rotation axis; A first driving portion (4) is in transmission cooperation with the first output portion (1), and the first driving portion (4) is suitable for driving the first output shaft (101) to rotate; A second driving portion (5) is in transmission cooperation with the transmission portion (3), and the second driving portion (5) is suitable for driving the planet carrier (302) to rotate; The first driving part (4) includes a first driving member (401) and a first driving wheel (402), the driving end of the first driving part (4) is connected to the first driving wheel (402), the first output part (1) also includes a first transmission wheel (103) coaxially arranged on the first output shaft (101), the first driving wheel (402) and the first transmission wheel (103) are in transmission cooperation, and the first driving member (401) drives the first output shaft (101) to rotate through the first transmission wheel (103); The second driving part (5) comprises a second driving member (501) and a second driving wheel (502); the driving end of the second driving part (5) is connected to the second driving wheel (502); the outer ring of the planet carrier (302) is provided with external teeth (3021); the second driving wheel (502) is in transmission cooperation with the planet carrier (302); the second driving member (501) drives the planet carrier (302) to rotate via the second driving wheel (502); The planetary frame (302) includes a transmission frame (3022) and a mounting frame (3023), the mounting frame (3023) is connected to the transmission frame (3022), the outer ring of the transmission frame (3022) is provided with the outer teeth (3021), the mounting frame (3023) is provided with a mounting position corresponding to the position between the first bevel gear (102) and the second bevel gear (202), the transmission bevel gear (301) is rotatably arranged at the mounting position, and the transmission frame (3022) is rotatably sleeved on the second output shaft (201); The drive system further comprises a first drive box (601), a second drive box (602) and a transmission box (603); the first drive box (601), the second drive box (602) and the transmission box (603) all have mounting cavities therein; the first drive box (601) and the second drive box (602) are respectively arranged on both sides of the transmission box (603); the first output portion (1), the second output portion (2), the transmission portion (3), the first drive wheel (402) and the second drive wheel (502) are arranged in the mounting cavities; the first drive member (401) is arranged in the first drive box (601) and connected to the first drive wheel (402); the second drive member (501) is arranged in the second drive box (602) and connected to the second drive wheel (502).

2. The drive system according to claim 1, characterized in that The radius of the first driving wheel (402) is smaller than the radius of the first transmission wheel (103).

3. The drive system according to claim 1, characterized in that The radius of the second driving wheel (502) is smaller than the radius of the transmission frame (3022).

4. The drive system according to claim 1, characterized in that The radius of the first driving wheel (402) is consistent with the radius of the second driving wheel (502), and the radius of the first transmission wheel (103) is consistent with the radius of the outer ring of the planet carrier (302).

5. The drive system according to claim 1 or 2, characterized in that: The drive system further comprises a control structure, wherein the control structure is connected to the first drive unit (4) and the second drive unit (5) respectively to control the rotation state of the first output shaft (101) and the planet carrier (302).

6. A working machine, characterized in that: include: body (7); Track assemblies (8) are arranged on both sides of the vehicle body (7) and connected to the vehicle body (7); The drive system according to any one of claims 1 to 5 is arranged on one side of the vehicle body (7) and is respectively connected in transmission with the track assemblies (8) on both sides.

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