一种工程机械用六进三退变速箱
By installing a dual-chamber hydraulic clutch within the gearbox body, the six-forward and three-reverse gearbox design solves the problem of the limited speed range of traditional gearboxes, achieving a wider speed coverage and improving operating efficiency and fuel economy.
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
In existing technologies, traditional construction machinery often uses two-forward and two-reverse hydraulic transmissions. However, existing technologies have limitations in addressing transmission system issues. In particular, most traditional small construction machinery is equipped with two-forward and two-reverse or three-forward and three-reverse hydraulic transmissions. The forward gears cover a relatively small speed range, making it difficult to accurately match complex work scenarios. This leads to drivers facing difficulties in finding enough gears or being unable to find suitable gears, affecting work efficiency and fuel economy.
The gearbox adopts a six-forward and three-reverse gearbox design. By installing dual-working-chamber hydraulic clutches on the parallel forward clutch shaft, reverse clutch shaft and intermediate clutch shaft in the gearbox body, it can realize a full hydraulic shift of 9 gears in total, with smooth shifting and the forward gears covering a wider speed range.
It achieves wider speed range coverage, improving operational efficiency and fuel economy.
Smart Images
Figure CN224515843U_ABST
Abstract
Claims
1. A six-in-three-out gearbox for a construction machine, characterized by: The gearbox includes a gearbox housing (16), inside which are installed parallel forward clutch shafts (18), reverse clutch shafts (19), intermediate clutch shafts (20) and output clutch shafts (21). The forward clutch shafts (18), reverse clutch shafts (19) and intermediate clutch shafts (20) are all equipped with hydraulic clutches with two working chambers. Both ends of the hydraulic clutches are provided with disc hub gears, and the middle of the hydraulic clutches is provided with a gear ring.
2. A six forward and three reverse transmission for a construction machine as set forth in claim 1, wherein: An input shaft (17) is rotatably mounted on the side wall of the gearbox body (16), and an input gear (1) is mounted on the end of the input shaft (17).
3. A six forward and three reverse transmission for a construction machine as set forth in claim 2, wherein: A torque converter is installed on the main body of the input shaft (17). The side of the torque converter is connected to the pump port drive gear (14). The pump port drive gear (14) meshes with the pump port driven gear (15) for transmission.
4. A six forward and three reverse transmission for a construction machine as set forth in claim 2, wherein: 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 gear ring A (4) in the middle of the hydraulic clutch.
5. A six forward and three reverse transmission for a construction machine as set forth in claim 4, wherein: The hydraulic clutch on the retraction clutch shaft (19) has a disc gear B (3) that can mesh with the input gear (1) for transmission at one end, and a disc gear (7) and a disc gear D (8) at the other end. The disc gear (7) meshes with the disc gear C (6) for transmission, and a gear ring B (5) that meshes with the gear ring A (4) for transmission in the middle of the hydraulic clutch.
6. A six forward and three reverse transmission for a construction machine as set forth in claim 5, wherein: One end of the hydraulic clutch on the intermediate clutch shaft (20) is provided with a disc hub gear F (12), which is driven by the disc hub gear B (3) through the idler gear (11). The idler gear (11) is rotatably mounted on the inner wall of the gearbox body (16). The other end of the hydraulic clutch is provided with a disc hub gear E (9) that meshes with the disc hub gear D (8). The middle part of the hydraulic clutch is provided with a gear ring C (10) that meshes with the gear ring B (5).
7. A six forward and three reverse transmission for a construction machine as set forth in claim 6, wherein: An output gear (13) is mounted on the output clutch shaft (21), and the output gear (13) meshes with the disc hub gear E (9).
8. A six forward and three reverse transmission for a construction machine as set forth in claim 1, wherein: Output flanges (22) are installed on both ends of the output clutch shaft (21).