A four-motor power system with power continuity

Abstract

This invention provides a four-motor power system with uninterrupted power. The main shaft of the front main housing is coaxially mounted from front to rear with a long-mesh reduction gear, a first sliding sleeve high-gear, a first sliding sleeve, a first sliding sleeve low-gear, a second sliding sleeve, a second sliding sleeve stop gear, and a long-mesh gear. The long-mesh reduction gear and the first sliding sleeve high-gear are integrally fixed. The system also includes a first motor, a second motor, a third motor, and a fourth motor. The output gear of the first motor meshes with the right side of the long-mesh gear, and the output gear of the second motor meshes with the left side of the long-mesh gear. The output gear of the third motor meshes with the right side of the first sliding sleeve high-gear, and the output gear of the fourth motor meshes with the left side of the first sliding sleeve high-gear. The power source of this invention uses four high-speed motors, which not only meets the high-power requirements of large-tonnage mining trucks but also reduces the weight and cost of the drive system, while also meeting the requirement of uninterrupted power during gear shifting in special working environments.

Description

Technical Field

[0001] This invention belongs to the field of electric vehicle technology, and relates to power systems, specifically to a four-motor power system with uninterrupted power. Background Technology

[0002] Currently, the power systems of pure electric mining trucks mainly consist of a drive motor and a gearbox. The gearbox in a pure electric power system uses sliding sleeves for shifting, which can lead to power interruptions during gear changes. This power interruption during gear changes is extremely dangerous for mining trucks operating in special environments such as steep inclines and heavy loads. Mining trucks, especially those with large total weights, have a pressing need for a high-powered power system that allows for uninterrupted gear changes. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a four-motor power system with uninterrupted power, which solves the technical problem that the power of pure electric mining trucks will be interrupted in the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A four-motor power system with uninterrupted power supply includes a gearbox. The gearbox includes a front master gearbox, which includes a front master gearbox spindle. The front master gearbox spindle is coaxially mounted from front end to rear end with a long meshing reduction gear, a first sliding sleeve high-gear gear, a first sliding sleeve, a first sliding sleeve low-gear gear, a second sliding sleeve, a second sliding sleeve gear, and a long meshing gear. The long meshing reduction gear and the first sliding sleeve high-gear gear are integrally fixed.

[0006] The long-meshing reduction gear, the first sliding sleeve high-gear, the first sliding sleeve low-gear, and the second sliding sleeve stop gear are all capable of rotating relative to the front main shaft with the central axis of the front main shaft as the rotation center; the long-meshing gear is fixedly mounted on the front main shaft; the first sliding sleeve and the second sliding sleeve are capable of sliding on the front main shaft; the first sliding sleeve is used to realize the coupling between the first sliding sleeve high-gear and the front main shaft or the coupling between the first sliding sleeve low-gear and the front main shaft; the second sliding sleeve is used to realize the coupling between the second sliding sleeve stop gear and the front main shaft.

[0007] The system also includes a first motor, a second motor, a third motor, and a fourth motor. The first motor is connected to the first motor output gear via the first motor output shaft, the second motor is connected to the second motor output gear via the second motor output shaft, the third motor is connected to the third motor output gear via the third motor output shaft, and the fourth motor is connected to the fourth motor output gear via the fourth motor output shaft.

[0008] The first motor output gear meshes with the right side of the long meshing gear, and the second motor output gear meshes with the left side of the long meshing gear.

[0009] The third motor output gear meshes with the right side of the first sliding sleeve high gear, and the fourth motor output gear meshes with the left side of the first sliding sleeve high gear.

[0010] The present invention also has the following technical features:

[0011] The gearbox also includes an auxiliary gearbox, which includes an input gear, a third sliding sleeve, and an output shaft. The input gear and the third sliding sleeve are sequentially mounted on the main shaft of the front main gearbox behind the long meshing gear.

[0012] The rear auxiliary gearbox input gear can rotate relative to the front main gearbox spindle with the central axis of the front main gearbox spindle as the rotation center. The third sliding sleeve is used to realize the coupling between the rear auxiliary gearbox input gear and the front main gearbox spindle or the coupling between the rear auxiliary gearbox output shaft and the front main gearbox spindle.

[0013] The rear auxiliary box also includes a right intermediate shaft and a left intermediate shaft of the rear auxiliary box, which are arranged parallel to the output shaft of the rear auxiliary box. The right intermediate shaft of the rear auxiliary box is located to the right of the output shaft of the rear auxiliary box, and the left intermediate shaft of the rear auxiliary box is located to the left of the output shaft of the rear auxiliary box.

[0014] The rear auxiliary gearbox output shaft is also fixedly installed with a rear auxiliary gearbox output gear; the rear auxiliary gearbox right intermediate shaft input gear and the rear auxiliary gearbox right intermediate shaft output gear are fixedly installed from front to back on the rear auxiliary gearbox right intermediate shaft; the rear auxiliary gearbox left intermediate shaft input gear and the rear auxiliary gearbox left intermediate shaft output gear are fixedly installed from front to back on the rear auxiliary gearbox left intermediate shaft.

[0015] The right intermediate shaft input gear of the rear auxiliary gearbox meshes with the right side of the rear auxiliary gearbox input gear; the left intermediate shaft input gear of the rear auxiliary gearbox meshes with the left side of the rear auxiliary gearbox input gear; the right intermediate shaft output gear of the rear auxiliary gearbox meshes with the right side of the rear auxiliary gearbox output gear; and the left intermediate shaft output gear of the rear auxiliary gearbox meshes with the left side of the rear auxiliary gearbox output gear.

[0016] The front main box also includes a right intermediate shaft and a left intermediate shaft of the front main box, which are arranged parallel to the main shaft of the front main box. The right intermediate shaft of the front main box is located to the right of the main shaft of the front main box, and the left intermediate shaft of the front main box is located to the left of the main shaft of the front main box.

[0017] The front main gearbox right intermediate shaft is coaxially fixedly mounted with a front main gearbox right intermediate shaft input gear, a first sliding sleeve low gear right intermediate shaft meshing gear and a second sliding sleeve right intermediate shaft meshing gear from front to rear. The front main gearbox left intermediate shaft is coaxially fixedly mounted with a front main gearbox left intermediate shaft input gear, a first sliding sleeve low gear left intermediate shaft meshing gear and a second sliding sleeve left intermediate shaft meshing gear from front to rear.

[0018] The front main gearbox right intermediate shaft input gear meshes with the right side of the long meshing reduction gear, and the front main gearbox left intermediate shaft input gear meshes with the left side of the long meshing reduction gear; the first sliding sleeve low gear right intermediate shaft meshing gear meshes with the right side of the first sliding sleeve low gear, and the first sliding sleeve low gear left intermediate shaft meshing gear meshes with the left side of the first sliding sleeve low gear; the second sliding sleeve right intermediate shaft meshing gear meshes with the right side of the second sliding sleeve gear, and the second sliding sleeve left intermediate shaft meshing gear meshes with the left side of the second sliding sleeve gear.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] (I) The power source of the power system of the present invention adopts four high-speed motors, which not only meets the high power requirements of the power system of large-tonnage mining trucks, but also reduces the weight and cost of the drive system, and can also meet the requirement of uninterrupted power during the shifting process in special working environments.

[0021] (II) The gearbox section of the power system of the present invention adopts a three-stage reduction + fixed speed ratio reduction scheme, which is compact in structure. While ensuring that the gearbox has a large output torque, it can adjust the output of the two sets of motors to ensure that all four motors are in the high-efficiency operating range; while satisfying the continuity of power, reducing the number of gears can effectively reduce the failure rate and improve the reliability of the product.

[0022] (III) The rear auxiliary gearbox of the power system of the present invention adopts a two-speed scheme, one gear provides two-stage deceleration, and the other gear is a direct drive output, which further expands the power performance of the power system and improves the high-speed performance of the system.

[0023] (IV) This invention primarily targets mining trucks with large total weight. Through a structure of four high-speed motors and a gearbox (with an auxiliary gearbox), the power system can output high power and torque, meeting the high power requirements of mining trucks and the need for uninterrupted gear shifting under special operating conditions. The four high-speed motors provide the system with significant power and torque, and the high-speed motor solution is less expensive and lighter than traditional high-power low-speed motors or two motors in series. The gearbox of this invention adopts a three-speed front main gearbox and a two-speed rear auxiliary gearbox, which can reduce speed and increase torque through different operating modes to meet the needs of large-tonnage pure electric mining trucks in various working environments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a four-motor power system with uninterrupted power supply.

[0025] Figure 2 This is a schematic diagram of power transmission in working mode 0.

[0026] Figure 3 This is a schematic diagram of power transmission in working mode 1.

[0027] Figure 4 This is a schematic diagram of power transmission in working mode 2.

[0028] Figure 5 This is a schematic diagram of power transmission in working mode 3.

[0029] Figure 6 This is a schematic diagram of power transmission in working mode 4.

[0030] Figure 7 This is a schematic diagram of power transmission in working mode 5.

[0031] Figure 8 This is a schematic diagram of power transmission in working mode 6.

[0032] The meanings of the labels in the diagram are as follows: 1-First motor, 2-Second motor, 3-Third motor, 4-Fourth motor, 5-Front main gearbox, 6-Rear auxiliary gearbox, 7-First motor output shaft, 8-First motor output gear, 9-Second motor output shaft, 10-Second motor output gear, 11-Third motor output shaft, 12-Third motor output gear, 13-Fourth motor output shaft, 14-Fourth motor output gear.

[0033] 501 - Front main shaft, 502 - Long meshing reduction gear, 503 - First sliding sleeve high gear, 504 - First sliding sleeve, 505 - First sliding sleeve low gear, 506 - Second sliding sleeve, 507 - Second sliding sleeve stop gear, 508 - Long meshing gear, 509 - Front main shaft right intermediate shaft, 510 - Front main shaft left intermediate shaft, 511 - Front main shaft right intermediate shaft input gear, 512 - First sliding sleeve low gear right intermediate shaft meshing gear, 513 - Second sliding sleeve right intermediate shaft meshing gear, 514 - Front main shaft left intermediate shaft input gear, 515 - First sliding sleeve low gear left intermediate shaft meshing gear, 516 - Second sliding sleeve left intermediate shaft meshing gear.

[0034] 601 - Rear auxiliary gearbox input gear, 602 - Third sliding sleeve, 603 - Rear auxiliary gearbox output shaft, 604 - Rear auxiliary gearbox right intermediate shaft, 605 - Rear auxiliary gearbox left intermediate shaft, 606 - Rear auxiliary gearbox output gear, 607 - Rear auxiliary gearbox right intermediate shaft input gear, 608 - Rear auxiliary gearbox right intermediate shaft output gear, 609 - Rear auxiliary gearbox left intermediate shaft input gear, 610 - Rear auxiliary gearbox left intermediate shaft output gear.

[0035] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, all devices and components in this invention are devices and components known in the prior art.

[0037] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0038] Example:

[0039] This embodiment provides a four-motor power system with uninterrupted power supply, such as... Figure 1 As shown, the system includes a gearbox, which includes a front main gearbox 5. The front main gearbox 5 includes a front main gearbox spindle 501. The front main gearbox spindle 501 is coaxially mounted from front end to rear end with a long meshing reduction gear 502, a first sliding sleeve high gear 503, a first sliding sleeve 504, a first sliding sleeve low gear 505, a second sliding sleeve 506, a second sliding sleeve gear 507, and a long meshing gear 508. The long meshing reduction gear 502 and the first sliding sleeve high gear 503 are integrally fixed.

[0040] like Figure 1 As shown, the long meshing reduction gear 502, the first sliding sleeve high gear 503, the first sliding sleeve low gear 505, and the second sliding sleeve stop gear 507 can rotate relative to the front main shaft 501 with the central axis of the front main shaft 501 as the rotation center; the long meshing gear 508 is fixedly mounted on the front main shaft 501; the first sliding sleeve 504 and the second sliding sleeve 506 can slide on the front main shaft 501; the first sliding sleeve 504 is used to realize the coupling between the first sliding sleeve high gear 503 and the front main shaft 501 or the coupling between the first sliding sleeve low gear 505 and the front main shaft 501; the second sliding sleeve 506 is used to realize the coupling between the second sliding sleeve stop gear 507 and the front main shaft 501.

[0041] like Figure 1As shown, the system also includes a first motor 1, a second motor 2, a third motor 3 and a fourth motor 4. The first motor 1 is connected to the first motor output gear 8 through the first motor output shaft 7. The second motor 2 is connected to the second motor output gear 10 through the second motor output shaft 9. The third motor 3 is connected to the third motor output gear 12 through the third motor output shaft 11. The fourth motor 4 is connected to the fourth motor output gear 14 through the fourth motor output shaft 13.

[0042] like Figure 1 As shown, the first motor output gear 8 meshes with the right side of the long meshing gear 508, and the second motor output gear 10 meshes with the left side of the long meshing gear 508.

[0043] like Figure 1 As shown, the third motor output gear 12 meshes with the right side of the first sliding sleeve high gear 503, and the fourth motor output gear 14 meshes with the left side of the first sliding sleeve high gear 503.

[0044] In this embodiment, the first motor 1, the second motor 2, the third motor 3 and the fourth motor 4 are all high-speed motors known in the art.

[0045] As a further solution in this embodiment, such as Figure 1 As shown, the front main box 5 also includes a front main box right intermediate shaft 509 and a front main box left intermediate shaft 510 arranged parallel to the front main box main shaft 501. The front main box right intermediate shaft 509 is located to the right of the front main box main shaft 501, and the front main box left intermediate shaft 510 is located to the left of the front main box main shaft 501.

[0046] As a further solution in this embodiment, such as Figure 1 As shown, the front main gearbox right intermediate shaft 509 is coaxially fixedly mounted with the front main gearbox right intermediate shaft input gear 511, the first sliding sleeve low gear right intermediate shaft meshing gear 512 and the second sliding sleeve right intermediate shaft meshing gear 513 from the front end to the rear end; the front main gearbox left intermediate shaft 510 is coaxially fixedly mounted with the front main gearbox left intermediate shaft input gear 514, the first sliding sleeve low gear left intermediate shaft meshing gear 515 and the second sliding sleeve left intermediate shaft meshing gear 516 from the front end to the rear end.

[0047] As a further solution in this embodiment, such as Figure 1As shown, the input gear 511 of the right intermediate shaft of the front main gearbox meshes with the right side of the long meshing reduction gear 502, and the input gear 514 of the left intermediate shaft of the front main gearbox meshes with the left side of the long meshing reduction gear 502; the first sliding sleeve low gear right intermediate shaft meshing gear 512 meshes with the right side of the first sliding sleeve low gear 505, and the first sliding sleeve low gear left intermediate shaft meshing gear 515 meshes with the left side of the first sliding sleeve low gear 505; the second sliding sleeve right intermediate shaft meshing gear 513 meshes with the right side of the second sliding sleeve stop gear 507, and the second sliding sleeve left intermediate shaft meshing gear 516 meshes with the left side of the second sliding sleeve stop gear 507.

[0048] As a further solution in this embodiment, such as Figure 1 As shown, the gearbox also includes a secondary gearbox 6, which includes a secondary gearbox input gear 601, a third sliding sleeve 602, and a secondary gearbox output shaft 603; the secondary gearbox input gear 601 and the third sliding sleeve 602 are sequentially mounted on the main shaft 501 of the front main gearbox behind the long meshing gear 508 from front to back.

[0049] As a further solution in this embodiment, such as Figure 1 As shown, the rear auxiliary gearbox input gear 601 can rotate relative to the front main gearbox main shaft 501 with the central axis of the front main gearbox main shaft 501 as the rotation center. The third sliding sleeve 602 is used to realize the coupling between the rear auxiliary gearbox input gear 601 and the front main gearbox main shaft 501 or the coupling between the rear auxiliary gearbox output shaft 603 and the front main gearbox main shaft 501.

[0050] As a further solution in this embodiment, such as Figure 1 As shown, the rear auxiliary box 6 also includes a right intermediate shaft 604 and a left intermediate shaft 605 of the rear auxiliary box, which are arranged parallel to the output shaft 603 of the rear auxiliary box. The right intermediate shaft 604 of the rear auxiliary box is located to the right of the output shaft 603 of the rear auxiliary box, and the left intermediate shaft 605 of the rear auxiliary box is located to the left of the output shaft 603 of the rear auxiliary box.

[0051] As a further solution in this embodiment, such as Figure 1 As shown, a rear auxiliary gearbox output gear 606 is also fixedly installed on the rear auxiliary gearbox output shaft 603; a rear auxiliary gearbox right intermediate shaft input gear 607 and a rear auxiliary gearbox right intermediate shaft output gear 608 are fixedly installed on the rear auxiliary gearbox right intermediate shaft 604 from front to back; a rear auxiliary gearbox left intermediate shaft input gear 609 and a rear auxiliary gearbox left intermediate shaft output gear 610 are fixedly installed on the rear auxiliary gearbox left intermediate shaft 605 from front to back.

[0052] As a further solution in this embodiment, such as Figure 1As shown, the right intermediate shaft input gear 607 of the rear auxiliary gearbox meshes with the right side of the rear auxiliary gearbox input gear 601; the left intermediate shaft input gear 609 of the rear auxiliary gearbox meshes with the left side of the rear auxiliary gearbox input gear 601; the right intermediate shaft output gear 608 of the rear auxiliary gearbox meshes with the right side of the rear auxiliary gearbox output gear 606; and the left intermediate shaft output gear 610 of the rear auxiliary gearbox meshes with the left side of the rear auxiliary gearbox output gear 606.

[0053] In this embodiment, the first sliding sleeve 504, the second sliding sleeve 506 and the third sliding sleeve 602 are all commonly used sliding sleeves known in the art, and the specific method of coupling between the gear and the spindle through the sliding sleeve adopts a commonly used coupling method known in the art.

[0054] In this embodiment, in the rear auxiliary gearbox 6, when the third sliding sleeve 602 slides to the front gear position, the rear auxiliary gearbox input gear 601 is coupled with the front main gearbox main shaft 501. The rotational force on the front main gearbox main shaft 501 is diverted through the rear auxiliary gearbox input gear 601 to the rear auxiliary gearbox right intermediate shaft input gear 607 and the rear auxiliary gearbox left intermediate shaft input gear 609, and then transmitted to the rear auxiliary gearbox output shaft 603 through the rear auxiliary gearbox right intermediate shaft 604 and the rear auxiliary gearbox left intermediate shaft 605, completing the power transmission. When the third sliding sleeve 602 slides to the rear gear position, the rear auxiliary gearbox output shaft 603 is coupled with the front main gearbox main shaft 501, and the rotational force on the front main gearbox main shaft 501 is directly transmitted to the rear auxiliary gearbox output shaft 603, completing the power transmission.

[0055] The uninterrupted power four-motor power system of this embodiment has the following seven working modes as shown in Table 1.

[0056] Table 1. Operating modes of the four-motor power system with uninterrupted power supply

[0057]

[0058] First, working mode 0:

[0059] like Figure 2 As shown, at this time, the first sliding sleeve 504 and the second sliding sleeve 506 of the front main box 5 of the power system are both in neutral, and the third sliding sleeve 602 of the rear auxiliary box 6 is also in neutral, with no power output.

[0060] Second, working mode 1:

[0061] like Figure 3 As shown, at this time, the first sliding sleeve 504 of the power system is in neutral, the second sliding sleeve 506 is in the rear gear position, the second sliding sleeve gear 507 is coupled with the front main gearbox spindle 501, the third sliding sleeve 602 of the rear auxiliary gearbox 6 is in the front gear position, and the rear auxiliary gearbox input gear 601 is coupled with the front main gearbox spindle 501.

[0062] The rotational power of the first motor 1 and the second motor 2 is output to the long meshing gear 508 after a first-stage reduction, and the rotational power is transmitted to the front main shaft 501 according to a fixed speed ratio.

[0063] The rotational power of the third motor 3 and the fourth motor 4 is output to the first sliding sleeve high gear 503 after the first stage of reduction. The first sliding sleeve high gear 503 transmits the power to the front main box right intermediate shaft input gear 511 and the front main box left intermediate shaft input gear 514 through the long meshing reduction gear 502 and the second stage of reduction. The power is then transmitted to the second sliding sleeve gear 507 for the third stage of reduction through the front main box right intermediate shaft 509 and the front main box left intermediate shaft 510. Finally, the power is coupled to the front main box main shaft 501 through the second sliding sleeve 506.

[0064] The rotational power of the four motors is output after coupling at the front main shaft 501. The rotational power of the front main shaft 501 is transmitted to the right intermediate shaft 604 and the left intermediate shaft 605 of the rear auxiliary shaft through the input gear 601 of the rear auxiliary shaft, and then to the output shaft 603 of the rear auxiliary shaft, thus completing the power transmission. The output torque of the power system is further amplified by speed reduction and torque increase.

[0065] In working mode 1, the rotational power of the third motor 3 and the fourth motor 4 is reduced in speed and increased in torque according to the maximum speed ratio after three-stage reduction. The speed ratio of the power system is at its maximum, which can output a large torque to meet special working conditions such as the vehicle climbing hills under full load.

[0066] Third, working mode 2:

[0067] like Figure 4 As shown, at this time, the first sliding sleeve 504 of the power system is in the rear gear position, the low gear 505 of the first sliding sleeve is coupled with the main shaft 501 of the front main box, the second sliding sleeve 506 is in the neutral gear position, the third sliding sleeve 602 of the rear auxiliary box 6 is in the front gear position, and the input gear 601 of the rear auxiliary box is coupled with the main shaft 501 of the front main box.

[0068] The rotational power of the first motor 1 and the second motor 2 is output to the long meshing gear 508 after a first-stage reduction, and the rotational power is transmitted to the front main shaft 501 according to a fixed speed ratio.

[0069] The rotational power of the third motor 3 and the fourth motor 4 is output to the high gear 503 of the first sliding sleeve after the first stage of reduction. The high gear 503 of the first sliding sleeve transmits the power to the input gear 511 of the right intermediate shaft of the front main box and the input gear 514 of the left intermediate shaft of the front main box through the long meshing reduction gear 502 and the second stage of reduction. The power is then transmitted to the low gear 505 of the first sliding sleeve for the third stage of reduction through the right intermediate shaft 509 and the left intermediate shaft 510 of the front main box. Finally, the power is coupled to the main shaft 501 of the front main box through the first sliding sleeve 504.

[0070] The rotational power of the four motors is output after coupling at the front main shaft 501. The rotational power of the front main shaft 501 is transmitted to the right intermediate shaft 604 and the left intermediate shaft 605 of the rear auxiliary shaft through the input gear 601 of the rear auxiliary shaft, and then to the output shaft 603 of the rear auxiliary shaft, thus completing the power transmission. The output torque of the power system is further amplified by speed reduction and torque increase.

[0071] In working mode 2, the rotational power of the third motor 3 and the fourth motor 4 is reduced in speed and increased in torque after three-stage reduction, which can further amplify the output torque of the power system.

[0072] Fourth, working mode 3:

[0073] like Figure 5 As shown, at this time, the first sliding sleeve 504 of the power system is in the front gear position, the high gear 503 of the first sliding sleeve is coupled with the main shaft 501 of the front main box, the second sliding sleeve 506 is in the neutral gear position, the third sliding sleeve 602 of the rear auxiliary box 6 is in the front gear position, and the input gear 601 of the rear auxiliary box is coupled with the main shaft 501 of the front main box.

[0074] The rotational power of the first motor 1 and the second motor 2 is output to the long meshing gear 508 after a first-stage reduction, and the rotational power is transmitted to the front main shaft 501 according to a fixed speed ratio.

[0075] The rotational power of the third motor 3 and the fourth motor 4 is output to the first sliding sleeve high gear 503 after the first stage of reduction. The first sliding sleeve high gear 503 couples the power to the front main shaft 501 through the first sliding sleeve 504.

[0076] The rotational power of the four motors is output after coupling at the front main shaft 501. The rotational power of the front main shaft 501 is transmitted to the right intermediate shaft 604 and the left intermediate shaft 605 of the rear auxiliary shaft through the input gear 601 of the rear auxiliary shaft, and then to the output shaft 603 of the rear auxiliary shaft, thus completing the power transmission. The output torque of the power system is further amplified by speed reduction and torque increase.

[0077] In working mode 3, the rotational power of the third motor 3 and the fourth motor 4 is reduced in speed and increased in torque after a first-stage reduction, which can further amplify the output torque of the power system.

[0078] Fifth, working mode 4:

[0079] like Figure 6 As shown, at this time, the first sliding sleeve 504 of the power system is in neutral, the second sliding sleeve 506 is in rear gear, the second sliding sleeve gear 507 is coupled to the main shaft 501 of the front main box, the third sliding sleeve 602 of the rear auxiliary box 6 is in rear gear, and the output shaft 603 of the rear auxiliary box is coupled to the main shaft 501 of the front main box.

[0080] The rotational power of the first motor 1 and the second motor 2 is output to the long meshing gear 508 after a first-stage reduction, and the rotational power is transmitted to the front main shaft 501 according to a fixed speed ratio.

[0081] The rotational power of the third motor 3 and the fourth motor 4 is output to the first sliding sleeve high gear 503 after the first stage of reduction. The first sliding sleeve high gear 503 transmits the power to the front main box right intermediate shaft input gear 511 and the front main box left intermediate shaft input gear 514 through the long meshing reduction gear 502 and the second stage of reduction. The power is then transmitted to the second sliding sleeve gear 507 for the third stage of reduction through the front main box right intermediate shaft 509 and the front main box left intermediate shaft 510. Finally, the power is coupled to the front main box main shaft 501 through the second sliding sleeve 506.

[0082] The rotational power of the four motors is output after coupling at the front main shaft 501. The rotational power of the front main shaft 501 is directly transmitted to the rear auxiliary shaft 603 through the coupling of the third sliding sleeve 602, thus completing the power transmission.

[0083] In working mode 4, the rotational power of the third motor 3 and the fourth motor 4 is reduced in speed and increased in torque according to the maximum speed ratio after three-stage reduction.

[0084] Sixth, Working Mode 5:

[0085] like Figure 7 As shown, at this time, the first sliding sleeve 504 of the power system is in the rear gear position, the low gear 505 of the first sliding sleeve is coupled with the main shaft 501 of the front main box, the second sliding sleeve 506 is in the neutral position, the third sliding sleeve 602 of the rear auxiliary box 6 is in the rear gear position, and the output shaft 603 of the rear auxiliary box is coupled with the main shaft 501 of the front main box.

[0086] The rotational power of the first motor 1 and the second motor 2 is output to the long meshing gear 508 after a first-stage reduction, and the rotational power is transmitted to the front main shaft 501 according to a fixed speed ratio.

[0087] The rotational power of the third motor 3 and the fourth motor 4 is output to the high gear 503 of the first sliding sleeve after the first stage of reduction. The high gear 503 of the first sliding sleeve transmits the power to the input gear 511 of the right intermediate shaft of the front main box and the input gear 514 of the left intermediate shaft of the front main box through the long meshing reduction gear 502 and the second stage of reduction. The power is then transmitted to the low gear 505 of the first sliding sleeve for the third stage of reduction through the right intermediate shaft 509 and the left intermediate shaft 510 of the front main box. Finally, the power is coupled to the main shaft 501 of the front main box through the first sliding sleeve 504.

[0088] The rotational power of the four motors is output after coupling at the front main shaft 501. The rotational power of the front main shaft 501 is directly transmitted to the rear auxiliary shaft 603 through the coupling of the third sliding sleeve 602, thus completing the power transmission.

[0089] In working mode 5, the rotational power of the third motor 3 and the fourth motor 4 is reduced in speed and increased in torque after three-stage reduction, which can further amplify the output torque of the power system.

[0090] Seventh, Working Mode 6:

[0091] like Figure 8 As shown, at this time, the first sliding sleeve 504 of the power system is in the front gear position, the high gear 503 of the first sliding sleeve is coupled with the main shaft 501 of the front main box, the second sliding sleeve 506 is in the neutral position, the third sliding sleeve 602 of the rear auxiliary box 6 is in the rear gear position, and the output shaft 603 of the rear auxiliary box is coupled with the main shaft 501 of the front main box.

[0092] The rotational power of the first motor 1 and the second motor 2 is output to the long meshing gear 508 after a first-stage reduction, and the rotational power is transmitted to the front main shaft 501 according to a fixed speed ratio.

[0093] The rotational power of the third motor 3 and the fourth motor 4 is output to the first sliding sleeve high gear 503 after the first stage of reduction. The first sliding sleeve high gear 503 couples the power to the front main shaft 501 through the first sliding sleeve 504.

[0094] The rotational power of the four motors is output after coupling at the front main shaft 501. The rotational power of the front main shaft 501 is directly transmitted to the rear auxiliary shaft 603 through the coupling of the third sliding sleeve 602, thus completing the power transmission.

[0095] In working mode 6, the rotational power of the third motor 3 and the fourth motor 4 is reduced in speed and increased in torque after a first-stage reduction, which can further amplify the output torque of the power system.

Claims

1. A four-motor power system with uninterrupted power supply, comprising a gearbox, said gearbox including a front master housing (5), said front master housing (5) including a front master housing spindle (501), characterized in that, The front main shaft (501) is coaxially fitted with a long meshing reduction gear (502), a first sliding sleeve high gear (503), a first sliding sleeve (504), a first sliding sleeve low gear (505), a second sliding sleeve (506), a second sliding sleeve stop gear (507), and a long meshing gear (508) from front to rear. The long meshing reduction gear (502) and the first sliding sleeve high gear (503) are integrally fixed. The long meshing reduction gear (502), the first sliding sleeve high gear (503), the first sliding sleeve low gear (505), and the second sliding sleeve stop gear (507) are capable of rotating relative to the front main gearbox main shaft (501) with the central axis of the front main gearbox main shaft (501) as the rotation center; the long meshing gear (508) is fixedly mounted on the front main gearbox main shaft (501); the first sliding sleeve (504) and the second sliding sleeve (506) are capable of sliding on the front main gearbox main shaft (501); the first sliding sleeve (504) is used to realize the coupling between the first sliding sleeve high gear (503) and the front main gearbox main shaft (501) or the coupling between the first sliding sleeve low gear (505) and the front main gearbox main shaft (501); the second sliding sleeve (506) is used to realize the coupling between the second sliding sleeve stop gear (507) and the front main gearbox main shaft (501); The front main box (5) further includes a front main box right intermediate shaft (509) and a front main box left intermediate shaft (510) arranged parallel to the front main box main shaft (501). The front main box right intermediate shaft (509) is located to the right of the front main box main shaft (501), and the front main box left intermediate shaft (510) is located to the left of the front main box main shaft (501). The front main gearbox right intermediate shaft (509) is coaxially fixedly mounted with the front main gearbox right intermediate shaft input gear (511), the first sliding sleeve low gear right intermediate shaft meshing gear (512), and the second sliding sleeve right intermediate shaft meshing gear (513) from the front end to the rear end; the front main gearbox left intermediate shaft (510) is coaxially fixedly mounted with the front main gearbox left intermediate shaft input gear (514), the first sliding sleeve low gear left intermediate shaft meshing gear (515), and the second sliding sleeve left intermediate shaft meshing gear (516) from the front end to the rear end. The front main gearbox right intermediate shaft input gear (511) meshes with the right side of the long meshing reduction gear (502), and the front main gearbox left intermediate shaft input gear (514) meshes with the left side of the long meshing reduction gear (502); the first sliding sleeve low gear right intermediate shaft meshing gear (512) meshes with the right side of the first sliding sleeve low gear (505), and the first sliding sleeve low gear left intermediate shaft meshing gear (515) meshes with the left side of the first sliding sleeve low gear (505); the second sliding sleeve right intermediate shaft meshing gear (513) meshes with the right side of the second sliding sleeve stop gear (507), and the second sliding sleeve left intermediate shaft meshing gear (516) meshes with the left side of the second sliding sleeve stop gear (507). The system also includes a first motor (1), a second motor (2), a third motor (3) and a fourth motor (4). The first motor (1) is connected to the first motor output gear (8) through the first motor output shaft (7). The second motor (2) is connected to the second motor output gear (10) through the second motor output shaft (9). The third motor (3) is connected to the third motor output gear (12) through the third motor output shaft (11). The fourth motor (4) is connected to the fourth motor output gear (14) through the fourth motor output shaft (13). The first motor output gear (8) meshes with the right side of the long meshing gear (508), and the second motor output gear (10) meshes with the left side of the long meshing gear (508). The third motor output gear (12) meshes with the right side of the first sliding sleeve high gear (503), and the fourth motor output gear (14) meshes with the left side of the first sliding sleeve high gear (503).

2. The uninterrupted power four-motor power system as described in claim 1, characterized in that, The gearbox also includes a rear auxiliary gearbox (6), which includes a rear auxiliary gearbox input gear (601), a third sliding sleeve (602) and a rear auxiliary gearbox output shaft (603); the rear auxiliary gearbox input gear (601) and the third sliding sleeve (602) are sequentially mounted on the front main gearbox spindle (501) behind the long meshing gear (508) from front to back. The rear auxiliary gearbox input gear (601) can rotate relative to the front main gearbox main shaft (501) with the central axis of the front main gearbox main shaft (501) as the rotation center. The third sliding sleeve (602) is used to realize the coupling between the rear auxiliary gearbox input gear (601) and the front main gearbox main shaft (501) or the coupling between the rear auxiliary gearbox output shaft (603) and the front main gearbox main shaft (501).

3. The uninterrupted power four-motor power system as described in claim 2, characterized in that, The rear auxiliary box (6) also includes a right intermediate shaft (604) and a left intermediate shaft (605) of the rear auxiliary box, which are arranged parallel to the output shaft (603) of the rear auxiliary box. The right intermediate shaft (604) of the rear auxiliary box is located to the right of the output shaft (603) of the rear auxiliary box, and the left intermediate shaft (605) of the rear auxiliary box is located to the left of the output shaft (603) of the rear auxiliary box.

4. The uninterrupted power four-motor power system as described in claim 3, characterized in that, The rear auxiliary box output shaft (603) is also fixedly mounted with a rear auxiliary box output gear (606); the rear auxiliary box right intermediate shaft (604) is fixedly mounted with a rear auxiliary box right intermediate shaft input gear (607) and a rear auxiliary box right intermediate shaft output gear (608) from front to back; the rear auxiliary box left intermediate shaft (605) is fixedly mounted with a rear auxiliary box left intermediate shaft input gear (609) and a rear auxiliary box left intermediate shaft output gear (610) from front to back.

5. The uninterrupted power four-motor power system as described in claim 4, characterized in that, The right intermediate shaft input gear (607) of the rear auxiliary gearbox meshes with the right side of the rear auxiliary gearbox input gear (601); the left intermediate shaft input gear (609) of the rear auxiliary gearbox meshes with the left side of the rear auxiliary gearbox input gear (601); the right intermediate shaft output gear (608) of the rear auxiliary gearbox meshes with the right side of the rear auxiliary gearbox output gear (606); and the left intermediate shaft output gear (610) of the rear auxiliary gearbox meshes with the left side of the rear auxiliary gearbox output gear (606).

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