Multi-motor double-gearbox transmission device

Abstract

The utility model provides a multi-motor double-gearbox transmission device which is used for solving the technical problems that in the prior art, the range of continuous output torque is relatively small, and the service life of motors cannot be guaranteed. The multi-motor double-gearbox transmission device comprises an input unit, an output unit, a C1 sliding sleeve and a C2 sliding sleeve. Wherein the input unit comprises a first motor assembly, a second motor assembly, a third motor assembly and an input shaft; two ends of the input shaft are respectively provided with a first normally meshed gear and a first spline gear which are rigidly connected with the input shaft; the output ends of the first motor assembly and the second motor assembly are arranged in parallel and engaged with the first normally engaged gear. The third motor assembly is hollowly sleeved on the input shaft; the output unit comprises a first output assembly, a second output assembly and a third output assembly; the C1 sliding sleeve and the C2 sliding sleeve are used for being connected with an external gear shifting device.

Description

Technical Field

[0001] The utility model relates to a power drive device for a pure electric mining truck, in particular to a multi-motor dual-gearbox transmission device. Background Art

[0002] At present, most of the power systems of pure electric mining trucks adopt a central integrated structure, mainly including a single motor and a single gearbox structure, a dual motor and a dual gearbox structure, and a multi-motor and a dual gearbox structure. The single motor and a single gearbox structure generally adopts a sliding sleeve gear-engaging structure, but this structure is prone to gear misalignment and gear-engaging failure under complex working conditions such as mines. Compared with the single motor and a single gearbox structure, the dual motor and a dual gearbox structure and the multi-motor and a dual gearbox structure can independently control the gearbox sliding sleeve gear-engaging, so that when one gearbox is shifting, the other gearbox can continuously output torque uninterruptedly. Therefore, the gear shift success rate is greatly improved, which is favored by customers.

[0003] Chinese patent publication number CN 219035473U discloses a drive system without power interruption during gear shifting. The system can continuously and uninterruptedly output torque and has a high gear shift success rate. However, the range of the system's continuous torque output is relatively small.

[0004] In addition, the Chinese patent with publication number CN 219523651U also discloses a power supply device with dual motors and a single gearbox, which realizes uninterrupted gear shifting through the cooperation between two sleeves and two motors. However, the output torque range of this system is relatively small; in addition, the motor needs to be kept working during the continuous output of torque, so the service life of the motor cannot be guaranteed. When the motor fails, the entire system will stop working. Utility Model Content

[0005] The utility model aims to provide a multi-motor dual-gearbox transmission device, which is used to solve the technical problems in the prior art such as relatively small range of continuous output torque and failure to ensure the service life of the motor.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A multi-motor dual-gearbox transmission device, which is special in that:

[0008] It includes an input unit, an output unit, a C1 sleeve and a C2 sleeve;

[0009] The input unit comprises a first motor assembly, a second motor assembly, a third motor assembly and an input shaft; the two ends of the input shaft are respectively provided with a first constant gear and a first spline gear rigidly connected thereto; the output ends of the first motor assembly and the second motor assembly are arranged in parallel, and the output ends are respectively meshed with the first constant gear; the third motor assembly is loosely sleeved on the input shaft and has two output ends;

[0010] The output unit includes a first output component, a second output component and a third output component;

[0011] One of the output ends of the third motor assembly is connected to the input ends of the second output assembly and the third output assembly respectively, and the output end of the second output assembly is used to connect to the power take-off device;

[0012] The other output end of the third motor assembly is coaxially arranged with the first output assembly; the first spline gear is located between the other output end of the third motor assembly and the input end of the first output assembly; the C1 sleeve is assembled on the first spline gear and can move axially along the first spline gear; the output end of the first output assembly is equipped with an output flange;

[0013] The first output assembly is provided with a first output floating assembly and a second output floating assembly in a floating connection therewith in sequence along the axial direction, and is connected to the second output assembly and the third output assembly respectively through the first output floating assembly and the second output floating assembly; a second spline gear is provided between the first output floating assembly and the second output floating assembly, and the C2 sliding sleeve is assembled on the second spline gear and can move axially between the first output floating assembly and the second output floating assembly along the second spline gear;

[0014] The C1 sliding sleeve and the C2 sliding sleeve are respectively used to be connected to an external gear shifting device.

[0015] Further, the first motor assembly includes a first motor, a first output shaft, and a first motor gear wheel, wherein two ends of the first output shaft are rigidly connected to the output end of the first motor and the first motor gear wheel respectively;

[0016] The second motor assembly comprises a second motor, a second output shaft and a second motor gear wheel, wherein two ends of the second output shaft are rigidly connected to the output end of the second motor and the second motor gear wheel respectively; the first motor gear wheel and the second motor gear wheel are respectively meshed with the first constant gear wheel;

[0017] The third motor assembly includes a third motor, a third output shaft, a gearbox constant gear and a gearbox constant gear combination gear; the third output shaft is loosely sleeved on the input shaft, and its input end is rigidly connected to the output end of the third motor. There are two output ends, one of which is rigidly connected to the gearbox constant gear, and is respectively connected to the input ends of the second output assembly and the third output assembly through the gearbox constant gear; the other output end of the third output shaft is rigidly connected to the gearbox constant gear combination gear, and the first spline gear is located between the gearbox constant gear combination gear and the input end of the first output assembly.

[0018] Furthermore, the first output assembly includes two shafts and a C1 sleeve two-shaft combination tooth rigidly mounted on the input end of the two shafts; the first spline gear is located between the gearbox constant gear wheel combination gear and the C1 sleeve two-shaft combination tooth; the C1 sleeve can move axially between the gearbox constant gear wheel combination gear and the C1 sleeve two-shaft combination tooth along the first spline gear;

[0019] The first output floating assembly includes a second shaft second gear floating gear and a second shaft second gear combining gear; the second output floating assembly includes a second shaft first gear floating gear and a second shaft first gear combining gear;

[0020] The second shaft second gear floating gear and the second shaft first gear floating wheel are respectively floatingly assembled on the second shaft, the second spline gear is rigidly assembled on the second shaft and is located between the second shaft second gear floating gear and the second shaft first gear floating wheel, the second shaft second gear combining teeth and the second shaft first gear combining teeth are respectively assembled on the second shaft second gear floating gear and the second shaft first gear floating wheel on one side close to the second spline gear, and the C2 sliding sleeve can move axially between the second shaft second gear combining teeth and the second shaft first gear combining teeth along the second spline gear;

[0021] The output ends of the two shafts are rigidly connected to the output flanges.

[0022] Further, the second output assembly comprises a first intermediate shaft, a first intermediate shaft constant gear 1, a first intermediate shaft second gear constant gear, a first intermediate shaft first gear, and a first intermediate shaft power take-off gear which are sequentially assembled on the first intermediate shaft in the axial direction;

[0023] The third output assembly comprises a second intermediate shaft, a second intermediate shaft constant gear first, a second intermediate shaft second gear constant gear second, and a second intermediate shaft first gear constant gear first which are sequentially mounted on the second intermediate shaft in the axial direction;

[0024] The first intermediate shaft constant gear wheel 1 and the second intermediate shaft constant gear wheel 1 are respectively meshed with the gear wheel of the gearbox; the first intermediate shaft second gear constant gear wheel and the second intermediate shaft second gear constant gear wheel are respectively meshed with the second shaft second gear floating gear; the first intermediate shaft first gear gear and the second intermediate shaft first gear constant gear wheel are respectively meshed with the second shaft first gear floating gear;

[0025] The output end of the first intermediate shaft power take-off gear is connected to the power take-off shaft, and the power take-off shaft is meshed with the first intermediate shaft power take-off gear through the power take-off gear.

[0026] Furthermore, the first motor, the second motor and the third motor are high-speed and low-torque motors respectively.

[0027] The utility model also provides another multi-motor dual gearbox transmission device, which is special in that:

[0028] It includes an input unit, an output unit, a C1 sleeve and a C2 sleeve;

[0029] The input unit comprises a first motor assembly, a second motor assembly, a third motor assembly and an input shaft; both ends of the input shaft are respectively provided with a first constant gear and a first spline gear rigidly connected thereto; the output ends of the first motor assembly and the second motor assembly are arranged in parallel, and the output ends are respectively meshed with the first constant gear; the third motor assembly is loosely sleeved on the input shaft;

[0030] The output unit includes a first output component, a second output component and a third output component;

[0031] The output end of the third motor assembly is connected to the input ends of the second output assembly and the third output assembly respectively, and the output end of the second output assembly is used to connect to the power take-off device;

[0032] The input shaft is equipped with an input floating assembly, and is connected to the second output assembly and the third output assembly respectively through the input floating assembly; the first spline gear is located between the input floating assembly and the input end of the first output assembly; the C1 sliding sleeve is equipped on the first spline gear and can move axially along the first spline gear; the output end of the first output assembly is equipped with an output flange;

[0033] The first output assembly is provided with a first output floating assembly and a second output floating assembly in a floating connection therewith in sequence along the axial direction, and is connected to the second output assembly and the third output assembly respectively through the first output floating assembly and the second output floating assembly; a second spline gear is provided between the first output floating assembly and the second output floating assembly, and the C2 sliding sleeve is assembled on the second spline gear and can move axially between the first output floating assembly and the second output floating assembly along the second spline gear;

[0034] The C1 sliding sleeve and the C2 sliding sleeve are respectively used to be connected to an external gear shifting device.

[0035] Further, the first motor assembly includes a first motor, a first output shaft, and a first motor gear wheel, wherein two ends of the first output shaft are rigidly connected to the output end of the first motor and the first motor gear wheel respectively;

[0036] The second motor assembly comprises a second motor, a second output shaft and a second motor gear wheel, wherein two ends of the second output shaft are rigidly connected to the output end of the second motor and the second motor gear wheel respectively; the first motor gear wheel and the second motor gear wheel are respectively meshed with the first constant gear wheel;

[0037] The third motor assembly includes a third motor, a third output shaft and a gearbox constant gear; the third output shaft is loosely mounted on the input shaft, and its two ends are rigidly connected to the output end of the third motor and the gearbox constant gear respectively, and are connected to the input ends of the second output assembly and the third output assembly respectively through the gearbox constant gear.

[0038] Furthermore, the input floating assembly includes an input shaft floating gear and a gearbox constant gear combination gear mounted on the input shaft floating gear; the input shaft is floatingly connected to the input shaft floating gear, and is respectively connected to the second output assembly and the third output assembly through the input shaft floating gear;

[0039] The first output assembly includes two shafts and a C1 sleeve two-shaft combination tooth rigidly mounted on the input end of the two shafts; the first spline gear is located between the gearbox constant gear wheel combination gear and the C1 sleeve two-shaft combination tooth; the C1 sleeve can move axially between the gearbox constant gear wheel combination gear and the C1 sleeve two-shaft combination tooth along the first spline gear;

[0040] The first output floating assembly includes a second shaft second gear floating gear and a second shaft second gear combining gear; the second output floating assembly includes a second shaft first gear floating gear and a second shaft first gear combining gear;

[0041] The second shaft second gear floating gear and the second shaft first gear floating wheel are respectively floatingly assembled on the second shaft, the second spline gear is rigidly assembled on the second shaft and is located between the second shaft second gear floating gear and the second shaft first gear floating wheel, the second shaft second gear combining teeth and the second shaft first gear combining teeth are respectively assembled on the second shaft second gear floating gear and the second shaft first gear floating wheel on one side close to the second spline gear, and the C2 sliding sleeve can move axially between the second shaft second gear combining teeth and the second shaft first gear combining teeth along the second spline gear;

[0042] The output ends of the two shafts are rigidly connected to the output flanges.

[0043] Further, the second output assembly includes a first intermediate shaft, a first intermediate shaft constant gear 1, a first intermediate shaft constant gear 2, a first intermediate shaft second gear constant gear, a first intermediate shaft first gear, and a first intermediate shaft power take-off gear which are sequentially assembled on the first intermediate shaft in the axial direction;

[0044] The third output assembly comprises a second intermediate shaft, a second intermediate shaft constant gear first, a second intermediate shaft constant gear second, a second intermediate shaft second gear constant gear second, and a second intermediate shaft first gear constant gear first which are sequentially mounted on the second intermediate shaft in the axial direction;

[0045] The first intermediate shaft constant gear wheel 1 and the second intermediate shaft constant gear wheel 1 are respectively meshed with the gear wheel of the gearbox; the first intermediate shaft constant gear wheel 2 and the second intermediate shaft constant gear wheel 2 are respectively meshed with the floating gear of the input shaft; the first intermediate shaft second gear constant gear wheel and the second intermediate shaft second gear constant gear wheel are respectively meshed with the floating gear of the second shaft second gear;

[0046] The first intermediate shaft first gear and the second intermediate shaft first gear constant gear are respectively meshed with the second shaft first gear floating gear;

[0047] The output end of the first intermediate shaft power take-off gear is connected to the power take-off shaft, and the power take-off shaft is meshed with the first intermediate shaft power take-off gear through the power take-off gear.

[0048] Furthermore, the first motor, the second motor and the third motor are high-speed and low-torque motors respectively.

[0049] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0050] 1. The multi-motor dual-gearbox transmission device provided by the utility model has an input unit comprising a first motor assembly, a second motor assembly, a third motor assembly and an input shaft, and an output unit comprising a first output assembly, a second output assembly and a third output assembly. The output ends of the first motor assembly and the second motor assembly are arranged in parallel at the front end of the input shaft, and the third motor assembly is loosely sleeved on the input shaft, so as to realize flexible adjustment of the torque ratio; at the same time, through the working position combination of the C1 sleeve and the C2 sleeve, the power output is not interrupted during the gear shifting process. This method meets the power and torque requirements, and the overall structure is simple and reliable.

[0051] 2. In the multi-motor dual-gearbox transmission device provided by the utility model, the first motor, the second motor, and the third motor are high-speed, low-torque motors. High-speed motors of the same power level can effectively reduce the weight of the system assembly.

[0052] 3. The multi-motor dual-gearbox transmission device provided by the utility model can adjust the working state of each motor as needed to avoid shortening the service life of a single motor due to long-term operation, thereby improving the working stability of the transmission device.

[0053] 4. The multi-motor dual-gearbox transmission device provided by the utility model has a greater assembly output torque and power.

[0054] 5. In the multi-motor dual-gearbox transmission device provided by the utility model, when the C1 sleeve and the C2 sleeve are not shifting, the torque ratio can be flexibly adjusted between the first motor, the second motor and the third motor, ensuring that the motors have higher working efficiency and lower temperature.

[0055] 6. The utility model also provides another multi-motor dual-gearbox transmission device, which can ensure that power output is not interrupted during the gear shifting process by adding an input floating component. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model.

[0057] Figure 2 This is a schematic diagram of working mode 0 in embodiment 1 of the present utility model.

[0058] Figure 3 This is a schematic diagram of working mode 1 in embodiment 1 of the present utility model.

[0059] Figure 4 This is a schematic diagram of working mode 2 in embodiment 1 of the present utility model.

[0060] Figure 5 This is a schematic diagram of working mode 3 in embodiment 1 of the present utility model.

[0061] Figure 6 This is a schematic diagram of working mode 4 in embodiment 1 of the present utility model.

[0062] Figure 7 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0063] The reference numerals are as follows:

[0064] 5-first motor; 10-first output shaft; 15-first motor gear wheel; 20-first constant gear wheel; 25-input shaft; 30-third motor; 40-third output shaft; 50-gearbox constant gear wheel; 55-input shaft floating gear; 60-first intermediate shaft constant gear wheel 1; 65-first intermediate shaft constant gear wheel 2; 70-first intermediate shaft; 80-second shaft second gear floating gear; 90-first intermediate shaft second gear constant gear wheel; 100-second shaft first gear floating gear; 110-first intermediate shaft first gear gear; 120-first intermediate shaft power take-off gear; 130-power take-off gear; 140-power take-off shaft; 145 -Second motor; 150-second output shaft; 155-second motor gear wheel; 160-second intermediate shaft constant gear wheel one; 170-gearbox constant gear wheel combined gear; 175-second intermediate shaft constant gear wheel two; 180-first spline gear; 190-C1 sleeve; 200-C1 sleeve two-shaft combined gear; 210-second intermediate shaft; 220-second intermediate shaft second gear constant gear wheel; 230-second intermediate shaft first gear constant gear wheel; 240-second shaft second gear combined gear; 250-C2 sleeve; 260-second spline gear; 270-second shaft first gear combined gear; 280-second shaft; 290-output flange. DETAILED DESCRIPTION

[0065] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0066] Embodiment 1

[0067] like Figure 1 As shown, this embodiment provides a multi-motor dual gearbox transmission device, including an input unit, an output unit, a C1 sleeve 190 and a C2 sleeve 250. The C1 sleeve 190 and the C2 sleeve 250 are both located in the gearbox and are respectively connected to an external shifting device.

[0068] The input unit includes a first motor assembly, a second motor assembly, a third motor assembly and an input shaft 25. The two ends of the input shaft 25 are respectively provided with a first constant gear 20 and a first spline gear 180 rigidly connected thereto, the C1 sleeve 190 is assembled on the first spline gear 180 and can move axially along the first spline gear 180; the output ends of the first motor assembly and the second motor assembly are arranged in parallel; the third motor assembly is sleeved on the input shaft 25.

[0069] The first motor assembly includes a first motor 5 , a first output shaft 10 , and a first motor gear 15 , wherein two ends of the first output shaft 10 are rigidly connected to the output end of the first motor 5 and the first motor gear 15 , respectively.

[0070] The second motor assembly includes a second motor 145, a second output shaft 150 and a second motor gear 155, wherein both ends of the second output shaft 150 are rigidly connected to the output end of the second motor 145 and the second motor gear 155 respectively; the first motor gear 15 and the second motor gear 155 are respectively meshed with the first constant gear 20.

[0071] The third motor assembly includes a third motor 30, a third output shaft 40, a gearbox constant gear 50 and a gearbox constant gear combination gear 170. The third output shaft 40 is loosely sleeved on the input shaft 25, and its input end is rigidly connected to the output end of the third motor 30. The third output shaft 40 has two output ends, one of which is rigidly connected to the gearbox constant gear 50, and is respectively connected to the input ends of the second output assembly and the third output assembly through the gearbox constant gear 50. The other output end of the third output shaft 40 is rigidly connected to the gearbox constant gear combination gear 170, and the first spline gear 180 is located between the gearbox constant gear combination gear 170 and the input end of the first output assembly.

[0072] The output unit includes a first output component, a second output component and a third output component.

[0073] The first output assembly includes two shafts 280 and a C1 sleeve two-shaft combining tooth 200 rigidly mounted on the input end of the two shafts 280; the first spline gear 180 is located between the gearbox constant gear wheel combining gear 170 and the C1 sleeve two-shaft combining tooth 200; the C1 sleeve 190 can move axially along the first spline gear 180 between the gearbox constant gear wheel combining gear 170 and the C1 sleeve two-shaft combining tooth 200.

[0074] The first output floating assembly and the second output floating assembly are sequentially mounted on the second shaft 280, and a second spline gear 260 is arranged between the first output floating assembly and the second output floating assembly. The first output floating assembly includes the second shaft second gear floating gear 80 and the second shaft second gear combining gear 240; the second output floating assembly includes the second shaft first gear floating wheel 100 and the second shaft first gear combining gear 270.

[0075] The second shaft second gear floating gear 80 and the second shaft first gear floating wheel 100 are respectively floatingly assembled on the second shaft 280, the second spline gear 260 is rigidly assembled on the second shaft 280 and located between the second shaft second gear floating gear 80 and the second shaft first gear floating wheel 100, and the C2 sliding sleeve 250 is assembled on the second spline gear 260. The second shaft second gear combining teeth 240 and the second shaft first gear combining teeth 270 are respectively assembled on the second shaft second gear floating gear 80 and the second shaft first gear floating wheel 100 on one side close to the second spline gear 260, and the C2 sliding sleeve 250 can move axially between the second shaft second gear combining teeth 240 and the second shaft first gear combining teeth 270 along the second spline gear 260. The output end of the second shaft 280 is rigidly connected to the output flange 290.

[0076] The second output assembly includes a first intermediate shaft 70, a first intermediate shaft constant gear 1 60, a first intermediate shaft second gear constant gear 90, a first intermediate shaft first gear gear 110, and a first intermediate shaft power take-off gear 120 which are sequentially assembled on the first intermediate shaft 70 in the axial direction.

[0077] The third output assembly includes a second intermediate shaft 210, a second intermediate shaft constant gear 160, a second intermediate shaft second gear constant gear 220, and a second intermediate shaft first gear constant gear 230 which are sequentially assembled on the second intermediate shaft 210 along the axial direction.

[0078] The first intermediate shaft constant gear 60 and the second intermediate shaft constant gear 160 are respectively meshed with the gearbox constant gear 50; the first intermediate shaft second gear constant gear 90 and the second intermediate shaft second gear constant gear 220 are respectively meshed with the second shaft second gear floating gear 80; the first intermediate shaft first gear gear 110 and the second intermediate shaft first gear constant gear 230 are respectively meshed with the second shaft first gear floating gear 100.

[0079] The output end of the first intermediate shaft power take-off gear 120 is connected to the power take-off shaft 140 , and the power take-off shaft 140 is meshed with the first intermediate shaft power take-off gear 120 through the power take-off gear 130 .

[0080] The second shaft 280 , the first intermediate shaft 70 , and the second intermediate shaft 210 of this embodiment are respectively mounted on corresponding gearboxes through bearings.

[0081] The working process of this embodiment is as follows:

[0082] A multi-motor dual-gearbox transmission device has five working modes as shown in Table 1, and the corresponding transmission routes are as follows: Figure 2-Figure 6 :

[0083] Table 1 Working mode

[0084]

[0085]

[0086] The working modes are divided into: Mode 0 is the neutral mode, Modes 1 to 4 are the gears during driving. Reverse gear is achieved by reversing the motor.

[0087] This embodiment adopts a multi-motor and dual gearbox structure, each gearbox corresponds to a sleeve, and each sleeve has two gear positions. Through motor selection, sleeve shift combination and control, it is possible to achieve shifting without power interruption during the driving process, meeting the power requirements of the vehicle under different working conditions. Each motor can be controlled separately, with better economy.

[0088] The working characteristics of this embodiment are as follows:

[0089] (1) Three motors are used as the power input of the transmission. The first motor 5 and the second motor 145 are both high-speed, low-torque motors, which are transmitted to the input shaft through a fixed speed ratio. The power and torque can be superimposed by coupling, and the expansion range is large.

[0090] (2) When the C1 sleeve 190 and the C2 sleeve 250 are not shifting, the torque ratio can be adjusted between the first motor 5, the second motor 145 and the third motor 30 to ensure that each motor operates at a higher efficiency point and has a lower temperature.

[0091] (3) The C1 sleeve 190 can couple the output shafts of the first motor 5, the second motor 145 and the output shaft of the third motor 30, or directly couple the output shafts of the first motor 5, the second motor 145 to the second shaft 280 of the gearbox. Through the working position combination of the C1 sleeve 190 and the C2 sleeve 250, only one sleeve position is switched each time the working mode is switched, and the other sleeve remains in gear, so that the power output of one motor is not interrupted during the gear shifting process. This method not only meets the power and torque requirements, but also can simply integrate the motor gearbox structure to a high degree, and the structure is simple and reliable.

[0092] In addition, the position combination of the C1 sleeve 190 and the C2 sleeve 250 has four working modes (excluding the neutral state). The modes are switched in sequence, and torque can be continuously output during switching, so that the power of the driving process shifting is not interrupted and the power loss is minimized, avoiding problems such as AMT shifting power interruption and shifting failure.

[0093] Embodiment 2

[0094] Combination Figure 7 As shown, the difference between this embodiment and the first embodiment is that an input floating assembly is floatingly mounted on the input shaft 25 of the transmission device of this embodiment, and the input floating assembly includes an input shaft floating gear 55 and a gearbox constant gear wheel combined gear 170 mounted on the input shaft floating gear 55; the input shaft 25 is floatingly connected to the input shaft floating gear 55, and is respectively connected to the second output assembly and the third output assembly through the input shaft floating gear 55. The first spline gear 180 is located between the input floating assembly and the input end of the first output assembly; the C1 sliding sleeve 190 is mounted on the first spline gear 180 and can move axially along the first spline gear 180.

[0095] In this embodiment, the structures of the first motor assembly, the second motor assembly and the first output assembly are respectively the same as those of the first embodiment, and the third motor assembly includes a third motor 30, a third output shaft 40 and a gearbox constant gear 50; the third output shaft 40 is loosely mounted on the input shaft 25, and its two ends are rigidly connected to the third motor 30 and the gearbox constant gear 50, respectively, and are connected to the input ends of the second output assembly and the third output assembly through the gearbox constant gear 50.

[0096] The second output assembly includes a first intermediate shaft 70, and a first intermediate shaft constant gear 1 60, a first intermediate shaft constant gear 2 65, a first intermediate shaft second gear constant gear 90, a first intermediate shaft first gear gear 110, and a first intermediate shaft power take-off gear 120 which are sequentially assembled on the first intermediate shaft 70 in the axial direction.

[0097] The third output assembly includes a second intermediate shaft 210, and a second intermediate shaft constant gear 1 160, a second intermediate shaft constant gear 2 175, a second intermediate shaft second gear constant gear 220, and a second intermediate shaft first gear constant gear 230 which are sequentially assembled on the second intermediate shaft 210 along the axial direction.

[0098] The first intermediate shaft constant gear 60 and the second intermediate shaft constant gear 160 are respectively meshed with the gearbox constant gear 50; the first intermediate shaft constant gear 2 65 and the second intermediate shaft constant gear 2 175 are respectively meshed with the input shaft floating gear 55; the first intermediate shaft second gear constant gear 90 and the second intermediate shaft second gear constant gear 220 are respectively meshed with the second shaft second gear floating gear 80.

[0099] The first intermediate shaft first gear 110 and the second intermediate shaft first gear constant gear 230 are respectively meshed with the second shaft first gear floating gear 100. The output end of the first intermediate shaft power take-off gear 120 is connected to the power take-off shaft 140, and the power take-off shaft 140 is meshed with the first intermediate shaft power take-off gear 120 through the power take-off gear 130.

[0100] The working mode of this embodiment is the same as that of the first embodiment and will not be described again here.

Claims

1. A multi-motor dual-gearbox transmission device, characterized in that: It includes an input unit, an output unit, a C1 sliding sleeve (190) and a C2 sliding sleeve (250); The input unit comprises a first motor assembly, a second motor assembly, a third motor assembly and an input shaft (25); the two ends of the input shaft (25) are respectively provided with a first constant gear (20) and a first spline gear (180) rigidly connected thereto; the output ends of the first motor assembly and the second motor assembly are arranged in parallel, and the output ends are respectively meshed with the first constant gear (20); the third motor assembly is loosely sleeved on the input shaft (25) and has two output ends; The output unit includes a first output component, a second output component and a third output component; One of the output ends of the third motor assembly is connected to the input ends of the second output assembly and the third output assembly respectively, and the output end of the second output assembly is used to connect to the power take-off device; The other output end of the third motor assembly is coaxially arranged with the first output assembly; the first spline gear (180) is located between the other output end of the third motor assembly and the input end of the first output assembly; the C1 sliding sleeve (190) is mounted on the first spline gear (180) and can move axially along the first spline gear (180); the output end of the first output assembly is equipped with an output flange (290); The first output component is provided with a first output floating component and a second output floating component in a floating connection therewith in sequence along the axial direction, and is respectively connected to the second output component and the third output component through the first output floating component and the second output floating component; a second spline gear (260) is provided between the first output floating component and the second output floating component, and the C2 sliding sleeve (250) is assembled on the second spline gear (260) and can move axially between the first output floating component and the second output floating component along the second spline gear (260); The C1 sliding sleeve (190) and the C2 sliding sleeve (250) are respectively used to be connected to an external gear shifting device.

2. The multi-motor dual gearbox transmission device according to claim 1, characterized in that: The first motor assembly comprises a first motor (5), a first output shaft (10), and a first motor gear wheel (15), wherein two ends of the first output shaft (10) are rigidly connected to the output end of the first motor (5) and the first motor gear wheel (15) respectively; The second motor assembly comprises a second motor (145), a second output shaft (150) and a second motor gear wheel (155), wherein two ends of the second output shaft (150) are rigidly connected to the output end of the second motor (145) and the second motor gear wheel (155) respectively; the first motor gear wheel (15) and the second motor gear wheel (155) are respectively geared with the first constant gear wheel (20); The third motor assembly comprises a third motor (30), a third output shaft (40), a gearbox constant gear (50) and a gearbox constant gear combination gear (170); the third output shaft (40) is loosely sleeved on the input shaft (25), and its input end is rigidly connected to the output end of the third motor (30), and there are two output ends, one of which is rigidly connected to the gearbox constant gear (50), and is respectively connected to the input ends of the second output assembly and the third output assembly through the gearbox constant gear (50); the other output end of the third output shaft (40) is rigidly connected to the gearbox constant gear combination gear (170), and the first spline gear (180) is located between the gearbox constant gear combination gear (170) and the input end of the first output assembly.

3. The multi-motor dual gearbox transmission device according to claim 2, characterized in that: The first output assembly comprises two shafts (280) and a C1 sliding sleeve two-shaft combination tooth (200) rigidly mounted on the input end of the two shafts (280); the first spline gear (180) is located between the gearbox constant gear wheel combination gear (170) and the C1 sliding sleeve two-shaft combination tooth (200); the C1 sliding sleeve (190) can move axially along the first spline gear (180) between the gearbox constant gear wheel combination gear (170) and the C1 sliding sleeve two-shaft combination tooth (200); The first output floating assembly comprises a second-shaft second-gear floating gear (80) and a second-shaft second-gear combining gear (240); the second output floating assembly comprises a second-shaft first-gear floating wheel (100) and a second-shaft first-gear combining gear (270); The second shaft second gear floating gear (80) and the second shaft first gear floating wheel (100) are respectively floatingly mounted on the second shaft (280); the second spline gear (260) is rigidly mounted on the second shaft (280) and is located between the second shaft second gear floating gear (80) and the second shaft first gear floating wheel (100); the second shaft second gear combining teeth (240) and the second shaft first gear combining teeth (270) are respectively mounted on the second shaft second gear floating gear (80) and the second shaft first gear floating wheel (100) on one side close to the second spline gear (260); the C2 sliding sleeve (250) can move axially between the second shaft second gear combining teeth (240) and the second shaft first gear combining teeth (270) along the second spline gear (260); The output ends of the two shafts (280) are rigidly connected to the output flange (290).

4. The multi-motor dual gearbox transmission device according to claim 3, characterized in that: The second output assembly comprises a first intermediate shaft (70), a first intermediate shaft constant gear 1 (60), a first intermediate shaft second gear constant gear (90), a first intermediate shaft first gear gear (110), and a first intermediate shaft power take-off gear (120) which are sequentially assembled on the first intermediate shaft (70) in the axial direction; The third output assembly comprises a second intermediate shaft (210), a second intermediate shaft constant gear first (160), a second intermediate shaft second gear constant gear (220), and a second intermediate shaft first gear constant gear (230) which are sequentially assembled on the second intermediate shaft (210) in the axial direction; The first intermediate shaft constant gear wheel 1 (60) and the second intermediate shaft constant gear wheel 1 (160) are respectively meshed with the gearbox constant gear wheel (50); the first intermediate shaft second gear constant gear wheel (90) and the second intermediate shaft second gear constant gear wheel (220) are respectively meshed with the second shaft second gear floating gear (80); the first intermediate shaft first gear gear (110) and the second intermediate shaft first gear constant gear wheel (230) are respectively meshed with the second shaft first gear floating gear (100); The output end of the first intermediate shaft power take-off gear (120) is connected to a power take-off shaft (140), and the power take-off shaft (140) is meshed with the first intermediate shaft power take-off gear (120) through the power take-off gear (130).

5. The multi-motor dual-gearbox transmission device according to claim 2, characterized in that: The first motor (5), the second motor (145) and the third motor (30) are respectively high-speed and low-torque motors.

6. A multi-motor dual gearbox transmission device, characterized in that: It includes an input unit, an output unit, a C1 sliding sleeve (190) and a C2 sliding sleeve (250); The input unit comprises a first motor assembly, a second motor assembly, a third motor assembly and an input shaft (25); the two ends of the input shaft (25) are respectively provided with a first constant gear (20) and a first spline gear (180) rigidly connected thereto; the output ends of the first motor assembly and the second motor assembly are arranged in parallel, and the output ends are respectively meshed with the first constant gear (20); the third motor assembly is loosely sleeved on the input shaft (25); The output unit includes a first output component, a second output component and a third output component; The output end of the third motor assembly is connected to the input ends of the second output assembly and the third output assembly respectively, and the output end of the second output assembly is used to connect to the power take-off device; The input shaft (25) is floatingly equipped with an input floating assembly, and is respectively connected to the second output assembly and the third output assembly through the input floating assembly; the first spline gear (180) is located between the input floating assembly and the input end of the first output assembly; the C1 sliding sleeve (190) is assembled on the first spline gear (180) and can move axially along the first spline gear (180); the output end of the first output assembly is equipped with an output flange (290); The first output component is provided with a first output floating component and a second output floating component in a floating connection therewith in sequence along the axial direction, and is respectively connected to the second output component and the third output component through the first output floating component and the second output floating component; a second spline gear (260) is provided between the first output floating component and the second output floating component, and the C2 sliding sleeve (250) is assembled on the second spline gear (260) and can move axially between the first output floating component and the second output floating component along the second spline gear (260); The C1 sliding sleeve (190) and the C2 sliding sleeve (250) are respectively used to be connected to an external gear shifting device.

7. The multi-motor dual gearbox transmission device according to claim 6, characterized in that: The first motor assembly comprises a first motor (5), a first output shaft (10), and a first motor gear wheel (15), wherein two ends of the first output shaft (10) are rigidly connected to the output end of the first motor (5) and the first motor gear wheel (15) respectively; The second motor assembly comprises a second motor (145), a second output shaft (150) and a second motor gear wheel (155), wherein two ends of the second output shaft (150) are rigidly connected to the output end of the second motor (145) and the second motor gear wheel (155) respectively; the first motor gear wheel (15) and the second motor gear wheel (155) are respectively geared with the first constant gear wheel (20); The third motor assembly comprises a third motor (30), a third output shaft (40) and a gearbox constant gear (50); the third output shaft (40) is loosely sleeved on the input shaft (25), and its two ends are rigidly connected to the output end of the third motor (30) and the gearbox constant gear (50), respectively, and are connected to the input ends of the second output assembly and the third output assembly through the gearbox constant gear (50).

8. The multi-motor dual gearbox transmission device according to claim 7, characterized in that: The input floating assembly comprises an input shaft floating gear (55) and a gearbox constant gear combination gear (170) mounted on the input shaft floating gear (55); the input shaft (25) is floatingly connected to the input shaft floating gear (55), and is respectively connected to the second output assembly and the third output assembly through the input shaft floating gear (55); The first output assembly comprises two shafts (280) and a C1 sliding sleeve two-shaft combination tooth (200) rigidly mounted on the input end of the two shafts (280); the first spline gear (180) is located between the gearbox constant gear wheel combination gear (170) and the C1 sliding sleeve two-shaft combination tooth (200); the C1 sliding sleeve (190) can move axially along the first spline gear (180) between the gearbox constant gear wheel combination gear (170) and the C1 sliding sleeve two-shaft combination tooth (200); The first output floating assembly comprises a second-shaft second-gear floating gear (80) and a second-shaft second-gear combining gear (240); the second output floating assembly comprises a second-shaft first-gear floating wheel (100) and a second-shaft first-gear combining gear (270); The second shaft second gear floating gear (80) and the second shaft first gear floating wheel (100) are respectively floatingly mounted on the second shaft (280); the second spline gear (260) is rigidly mounted on the second shaft (280) and is located between the second shaft second gear floating gear (80) and the second shaft first gear floating wheel (100); the second shaft second gear combining teeth (240) and the second shaft first gear combining teeth (270) are respectively mounted on the second shaft second gear floating gear (80) and the second shaft first gear floating wheel (100) on one side close to the second spline gear (260); the C2 sliding sleeve (250) can move axially between the second shaft second gear combining teeth (240) and the second shaft first gear combining teeth (270) along the second spline gear (260); The output ends of the two shafts (280) are rigidly connected to the output flange (290).

9. The multi-motor dual gearbox transmission device according to claim 8, characterized in that: The second output assembly comprises a first intermediate shaft (70), a first intermediate shaft constant gear 1 (60), a first intermediate shaft constant gear 2 (65), a first intermediate shaft second gear constant gear (90), a first intermediate shaft first gear gear (110), and a first intermediate shaft power take-off gear (120) which are sequentially assembled on the first intermediate shaft (70) in the axial direction; The third output assembly comprises a second intermediate shaft (210), a second intermediate shaft constant gear wheel 1 (160), a second intermediate shaft constant gear wheel 2 (175), a second intermediate shaft second gear constant gear wheel (220), and a second intermediate shaft first gear constant gear wheel (230) which are sequentially assembled on the second intermediate shaft (210) in the axial direction; The first intermediate shaft constant gear wheel 1 (60) and the second intermediate shaft constant gear wheel 1 (160) are respectively meshed with the gearbox constant gear wheel (50); the first intermediate shaft constant gear wheel 2 (65) and the second intermediate shaft constant gear wheel 2 (175) are respectively meshed with the input shaft floating gear (55); the first intermediate shaft second gear constant gear wheel (90) and the second intermediate shaft second gear constant gear wheel (220) are respectively meshed with the second shaft second gear floating gear (80); The first intermediate shaft first gear (110) and the second intermediate shaft first gear constant meshing wheel (230) are meshed with the second shaft first gear floating wheel (100) respectively; The output end of the first intermediate shaft power take-off gear (120) is connected to a power take-off shaft (140), and the power take-off shaft (140) is meshed with the first intermediate shaft power take-off gear (120) through the power take-off gear (130).

10. The multi-motor dual gearbox transmission device according to claim 7, characterized in that: The first motor (5), the second motor (145) and the third motor (30) are respectively high-speed and low-torque motors.

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