一种工程机械用液力传动系统
By adopting a fixed-axis hydraulic clutch design in the hydraulic transmission system of engineering machinery, full hydraulic switching of four gears is achieved, solving the problems of low efficiency, complex operation and rapid component wear in the existing technology, and improving the reliability of the system and driving comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGZHOU MIHE JINLITE MACHINERY
- Filing Date
- 2025-07-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing hydraulic transmissions in construction machinery suffer from a limited number of working gears, low efficiency, and mechanical switching devices that increase operational complexity and driver workload, while also being prone to impacts and component wear.
It adopts a fixed-shaft structure, with hydraulic clutches having two working chambers installed on both the forward and reverse clutch shafts, and hydraulic clutches having one working chamber installed on the intermediate and output clutch shafts, realizing full hydraulic clutch switching of 4 gears and reducing power transmission shock and vibration.
It improved work efficiency, reduced the driver's workload, and enabled smooth gear shifting, reducing component wear and reliability issues.
Smart Images
Figure CN224515842U_ABST
Abstract
Claims
1. A hydrodynamic transmission system for a working machine, characterized in that The gearbox includes a gearbox housing (15), inside which are installed parallel forward clutch shafts (18), reverse clutch shafts (19), intermediate clutch shafts (20) and output clutch shafts (21). Both the forward clutch shaft (18) and the reverse clutch shaft (19) are equipped with hydraulic clutches with two working chambers, and both the intermediate clutch shaft (20) and the output clutch shaft (21) are equipped with hydraulic clutches with one working chamber. The hydraulic clutch on the intermediate clutch shaft (20) is provided with a clutch gear ring C (9) at one end and a disc hub gear F (11) at the other end; the hydraulic clutch on the output clutch shaft (21) is provided with a disc hub gear E (10) that meshes with the clutch gear ring C (9) at one end and a clutch gear ring D (12) that meshes with the disc hub gear F (11) at the other end.
2. A hydraulic drive system for a working machine as claimed in claim 1, characterized in that: An input shaft (16) is rotatably mounted on the side wall of the gearbox body (15), and an input gear (1) is mounted on the end of the input shaft (16).
3. A hydraulic drive system for a construction machine as claimed in claim 2, characterised in that: A torque converter (17) is installed on the main body of the input shaft (16). The side of the torque converter (17) is connected to the pump port drive gear (13), and the pump port drive gear (13) is connected to the pump port driven gear (14) in a transmission connection.
4. A hydraulic drive system for a construction machine as claimed in claim 2, characterised in that: The hydraulic clutch on the forward clutch shaft (18) has a disc hub gear A (2) that can mesh with the input gear (1) at one end, a disc hub gear C (6) at the other end, and a clutch gear ring A (4) on the outer side of the middle of the hydraulic clutch.
5. A hydraulic drive system for a construction machine as claimed in claim 4, characterised in that: The hydraulic clutch on the retraction clutch shaft (19) is provided with a disc hub gear B (3) that can mesh with the input gear (1) and a disc hub gear D (7) that meshes with the disc hub gear C (6) at one end. The hydraulic clutch is provided with a clutch gear ring B (5) that meshes with the clutch gear ring A (4) on the outside.
6. A hydraulic drive system for a construction machine as claimed in claim 1, characterised in that: An intermediate gear (8) that meshes with the disc hub gear D (7) is fixedly installed on the intermediate clutch shaft (20).
7. A hydraulic drive system for a construction machine as claimed in claim 1, characterized in that: The output clutch shaft (21) is provided with output flanges (22) at both ends.