CN-121973616-A - Power splitting and mixing system and equipment for loader

CN121973616ACN 121973616 ACN121973616 ACN 121973616ACN-121973616-A

Abstract

The application provides a loader power splitting and mixing system and equipment, and belongs to the technical field of equipment. The power splitting and mixing system of the loader comprises an engine, a first motor, a second motor, a first sun gear, a first planet carrier, a first gear ring, a first brake, a second brake and a reversing mechanism, wherein the engine is connected with or separated from the first planet carrier through a clutch, the first motor is connected with the first sun gear, the second motor is connected with the first gear ring, the first brake is used for controlling locking or releasing of the first planet carrier and a shell of the equipment, the second brake is used for controlling locking or releasing of the first planet carrier and the first gear ring, and the first gear ring is connected with an output shaft of the equipment through the reversing mechanism. Through the arrangement of the reversing mechanism, the power of the engine can be output positively and negatively through the first gear ring, the hybrid reverse gear function is realized, and the energy consumption is reduced.

Inventors

YU HONGFU
GAO PENGFEI
LI TONGTONG

Assignees

湖州三一重工研究院有限公司

Dates

Publication Date: 20260505
Application Date: 20260228
Priority Date: 20251126

Claims (10)

1. A loader power splitting and mixing system, comprising: the power assembly comprises an engine, a first motor and a second motor; the front-stage planetary gear comprises a first sun gear, a first planet carrier and a first gear ring, the engine is connected with or separated from the first planet carrier through a clutch, the first motor is connected with the first sun gear, and the second motor is connected with the first gear ring; A brake assembly including a first brake for controlling locking or release of the first carrier with a housing of the apparatus and a second brake for controlling locking or release of the first carrier with the first ring gear; the reversing mechanism is used for being connected with an output shaft of the device through the reversing mechanism, and is configured to enable a transmission path of power to be switched between a first path and a second path when the power of the first gear is transmitted to the output shaft, wherein the output shaft rotates in a first rotating direction under the first path, and the output shaft rotates in a direction opposite to the first rotating direction under the second path.
2. The loader power splitting and mixing system of claim 1, wherein the reversing mechanism comprises a third brake and a rear double planetary gear assembly, wherein the rear double planetary gear assembly comprises a second planetary gear and a third planetary gear which are sequentially arranged, the second planetary gear comprises a second sun gear, a second planet carrier and a second gear ring, the third planetary gear comprises a third sun gear, a third planet carrier and a third gear ring, the second sun gear is coaxially fixed with the third sun gear, the first gear ring is connected with the second sun gear to transmit power, the second gear ring is connected with the third planet carrier, and the third planet carrier is used for being connected with the output shaft; The third brake is used for controlling the locking or releasing of the third gear ring and the shell; the first ring gear is configured to transmit the power to the output shaft along the first path when the third ring gear is locked with the housing.
3. The loader power splitting and mixing system of claim 2, wherein the reversing mechanism further comprises a fourth brake for controlling locking or release of the second planet carrier with the housing; the first ring gear is configured to transmit the power to the output shaft along the second path when the second carrier is locked with the housing.
4. The loader power splitting and mixing system of claim 3, further comprising a control member, wherein the third brake and the fourth brake are each electrically connected to the control member, and wherein the control member is configured to control the third brake to selectively close or open to the fourth brake.
5. The loader power splitting and mixing system of any of claims 2-4, wherein the second motor is a hollow shaft motor, the hollow shaft motor is positioned between the pre-stage planetary row and the second planetary row, the hollow shaft motor is sleeved on the output end of the first gear ring, and the hollow shaft motor is coaxially connected with the second sun gear.
6. The loader power splitting and mixing system of claim 1, wherein the reversing mechanism comprises a rear row of single planets comprising a fourth sun gear, a fourth planet carrier, and a fourth ring gear, and a sliding sleeve reversing sub-mechanism disposed between the first ring gear and the fourth sun gear or between the first ring gear and the fourth ring gear; The sliding sleeve reversing sub-mechanism comprises a sliding sleeve capable of sliding axially, the sliding sleeve is used for switching between a first axial sliding position and a second axial sliding position, the sliding sleeve reversing sub-mechanism transmits power of the first gear ring to the output shaft along the first path in the first axial sliding position, and the sliding sleeve reversing sub-mechanism transmits power of the first gear ring to the output shaft along the second path in the second axial sliding position.
7. The loader power splitting and mixing system according to claim 6, wherein the sliding sleeve reversing sub-mechanism further comprises a forward meshing tooth set, a reverse meshing tooth set and a guide piece, wherein the forward meshing tooth set and the reverse meshing tooth set are respectively fixedly arranged on the inner sides of two ends of the sliding sleeve, the guide piece is used for being fixed on the shell, and the sliding sleeve is in sliding fit with the guide piece; The output end of the first gear ring is provided with a first tooth part, the input end of the fourth sun gear is provided with a second tooth part, and the input end of the fourth gear ring is provided with a third tooth part; when the sliding sleeve is at the first axial sliding position, the positive meshing gear set is simultaneously meshed with one of the second gear part and the third gear part and the first gear part, so that the power is transmitted along the first path; when the sliding sleeve is in the second axial sliding position, the reverse meshing gear set is simultaneously meshed with one of the second gear part and the third gear part and the first gear part, so that the power is transmitted along the second path.
8. The loader power splitting and mixing system of claim 6 or 7, wherein the sliding sleeve reversing sub-mechanism is disposed between the first ring gear and the fourth sun gear; the fourth gear ring is fixed on the shell, the fourth planet carrier is connected with the output shaft, so that the transmission ratio of the rear-stage single planet row is i=1+Zr/Zs, wherein Zr is the number of teeth of the fourth gear ring, zs is the number of teeth of the fourth sun gear, or, The fourth planet carrier is used for being fixed on the shell, the fourth gear ring is connected with the output shaft, so that the transmission ratio of the rear-stage single planet row is i=zs/(zs+zr), wherein Zr is the number of teeth of the fourth gear ring, and Zs is the number of teeth of the fourth sun gear.
9. The loader power splitting and mixing system of claim 6 or 7, wherein the sliding sleeve reversing sub-mechanism is disposed between the first gear ring and the fourth gear ring, the fourth planet carrier being for securing to the housing; the second motor is a hollow shaft motor, and the hollow shaft motor is sleeved on the input shaft of the fourth sun gear and is connected with the fourth sun gear.
10. An apparatus comprising an apparatus body and the loader power splitting and mixing system of any of claims 1to 9 disposed on the apparatus body.

Description

Power splitting and mixing system and equipment for loader The present application claims priority from the chinese patent application filed at 2025, 11 and 26, to the chinese national intellectual property agency, application number 202511758939.9, under the application name "hybrid powertrain and device", the entire contents of which are incorporated herein by reference. Technical Field The application relates to the technical field of equipment, in particular to a loader power splitting and mixing system and equipment. Background Equipment such as loaders, pumpers, and the like typically need to operate in complex operating conditions, such as construction sites, mines, road construction, and the like. In the operation process of the equipment, high-intensity acceleration, braking, steering and reversing operations are usually required to be frequently carried out. In the related art, the power assembly of the device adopts the combination of the traditional hydraulic torque converter and the mechanical gearbox as a main path of power transmission, and the mode can provide stable power output but has low energy conversion efficiency, or the power assembly can also realize power transmission by adopting a pure electric drive system. Therefore, it is desirable to provide a hybrid power split system for a loader that can reduce energy consumption, high torque output, and multi-mode switching to meet the requirements of efficient operation under complex operating conditions. Disclosure of Invention The application provides a loader power splitting and mixing system and equipment, which are used for solving the defects in the related art. In one aspect, the present application provides a loader power splitting and mixing system comprising: the power assembly comprises an engine, a first motor and a second motor; The front-stage planetary row comprises a first sun gear, a first planet carrier and a first gear ring, the engine is connected with or separated from the first planet carrier through a clutch, the first motor is connected with the first sun gear, and the second motor is connected with the first gear ring; The brake assembly comprises a first brake and a second brake, wherein the first brake is used for controlling the locking or releasing of the first planet carrier and the shell of the equipment, and the second brake is used for controlling the locking or releasing of the first planet carrier and the first gear ring; The reversing mechanism is used for being connected with an output shaft of the device through the reversing mechanism, and is configured to enable a transmission path of power to be switched between a first path and a second path when the power of the first gear is transmitted to the output shaft, wherein the output shaft rotates in a first rotating direction under the first path, and the output shaft rotates in a direction opposite to the first rotating direction under the second path. In one possible implementation manner, the power splitting and mixing system of the loader comprises a reversing mechanism and a rear-stage double-planetary-row assembly, wherein the rear-stage double-planetary-row assembly comprises a second planetary row and a third planetary row which are sequentially arranged, the second planetary row comprises a second sun gear, a second planet carrier and a second gear ring, the third planetary row comprises a third sun gear, a third planet carrier and a third gear ring, the second sun gear is coaxially fixed with the third sun gear, the first gear ring is connected with the second sun gear to transmit power, the second gear ring is connected with the third planet carrier, and the third planet carrier is used for being connected with an output shaft; The first ring gear is configured to transmit power to the output shaft along a first path when the third ring gear is locked with the housing. In one possible implementation, the loader power splitting and mixing system provided by the application, the reversing mechanism further comprises a fourth brake, the fourth brake is used for controlling locking or releasing of the second planet carrier and the shell, and the first gear ring is configured to transmit power to the output shaft along a second path when the second planet carrier and the shell are locked. In one possible implementation manner, the power splitting and mixing system of the loader provided by the application further comprises a control piece, wherein the third brake and the fourth brake are electrically connected with the control piece, and the control piece is used for controlling the third brake to be selectively closed or opened with the fourth brake. In one possible implementation manner, the second motor is a hollow shaft motor, the hollow shaft motor is positioned between the front-stage planetary row and the second planetary row, the hollow shaft motor is sleeved on the output end of the first gear ring, and the hollow shaft motor is coaxiall