Compression type speed regulating mechanism of stepless speed change tractor power chassis
By designing the compression-type speed control mechanism of the power chassis of the continuously variable speed tractor, the problems of difficulty in shifting and poor fluency in the prior art are solved, and the effect of simple operation and effort-saving shifting is achieved.
Patent Information
- Application Number
- CN202420270395.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-02-04
AI Technical Summary
The shifting operation of the existing hydraulic continuously variable tractor chassis is laborious and has poor smoothness, making it difficult to achieve simple operation and effortless shifting.
A compression-type speed control mechanism for the power chassis of a continuously variable speed tractor is designed, including a connecting sleeve, a pad, a butterfly spring, a locking sleeve and a control handle. Through the cooperation of the butterfly spring and a bearing, the rotation control of the control handle driving the HST speed control shaft is realized.
It achieves the effect of simple operation, effortless shifting and high smoothness, avoiding the trouble of frequent clutch stepping on the clutch when shifting gears, and is similar to the operation method of the car.
Smart Images
Figure CN222760283U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tractors of agricultural machinery, in particular to a compacting speed regulating mechanism of a power chassis of a continuously variable speed tractor. Background Art
[0002] Tractors are self-propelled power machines used to pull and drive working machinery to complete various mobile operations. They can also be used as fixed working power. They are composed of systems or devices such as engine, transmission, travel, steering, hydraulic suspension, power output, electrical instruments, driving control and traction. Existing tractors mainly use mechanical gear shifting or hydraulic continuously variable transmission (HST). The forward or reverse gear and speed selection of the existing hydraulic continuously variable transmission chassis are all achieved by hard connection between the handle and the speed shaft on the HST speed change unit. The gear shift operation is laborious and has poor smoothness. Summary of the invention
[0003] The technical problem to be solved by the utility model is to overcome the problems existing in the prior art and provide a compacting speed regulating mechanism for a power chassis of a continuously variable speed tractor.
[0004] The technical solution of the utility model is that it comprises a connecting sleeve (12), a cushion block (9), a butterfly spring (8), a locking sleeve (7) and a control handle (3), wherein the locking sleeve (7) is fixed to the housing (1) by means of bolts; the outer ring of the connecting sleeve (12) is arranged in the locking sleeve (7) and can rotate relatively, and the inner ring of the connecting sleeve (12) is connected to the HST speed regulating shaft (11) of the hydrostatic transmission unit (10) by means of a square key; a pressing step (2) is arranged on the connecting sleeve (12) body, and a butterfly spring (8) is arranged between the connecting sleeve (12) below the pressing step (2) and the locking sleeve (7), and the butterfly spring (8) is installed back to back; the connecting sleeve (12) is connected to the control handle (3) by means of a flange end cover (5) at the top.
[0005] A bearing (6) is provided between the connecting sleeve (12) below the pressing step (2) and the locking sleeve (7), a butterfly spring (8) is provided below the bearing (6), and a replaceable cushion block (9) is provided between the butterfly spring (8) and the box body (1).
[0006] Compared with the prior art, the utility model has the beneficial effects of simple operation, easy to use, avoiding the need to frequently step on the clutch when shifting gears, similar to the operation method of a car, and the gear shifting operation is labor-saving and smooth. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a structural schematic diagram of the utility model.
[0008] Numbers in the figure: 1-transition box, 2-clamping step, 3-control handle, 4-clamping speed regulating mechanism, 5-flange end cover, 6-bearing, 7-locking sleeve, 8-butterfly spring, 9-spacer, 10-hydrostatic transmission unit (HST), 11-HST speed regulating shaft, 12-connecting sleeve. DETAILED DESCRIPTION
[0009] The following is a further description of the embodiments of the present utility model in conjunction with the accompanying drawings.
[0010] The utility model comprises a connecting sleeve (12), a cushion block (9), a butterfly spring (8), a locking sleeve (7) and a control handle (3), wherein the locking sleeve (7) is fixed to a housing (1) by means of bolts; the outer ring of the connecting sleeve (12) is arranged in the locking sleeve (7) and can rotate relatively thereto, and the inner ring of the connecting sleeve (12) is connected to an HST speed regulating shaft (11) of a hydrostatic transmission unit (10) by means of a square key; a pressing step (2) is arranged on the connecting sleeve (12) body, a butterfly spring (8) is arranged between the connecting sleeve (12) below the pressing step (2) and the locking sleeve (7), and the butterfly springs (8) are installed back to back; the connecting sleeve (12) is connected to the control handle (3) by means of a flange end cover (5) at the top.
[0011] A bearing (6) is also provided between the connecting sleeve (12) below the pressing step (2) and the locking sleeve (7), a butterfly spring (8) is provided below the bearing (6), and a replaceable cushion block (9) is also provided between the butterfly spring (8) and the housing (1), and the cushion block (9) can be replaced according to the required pressure. The flange end cover (5) is fixed to the connecting sleeve (12) by bolts, and the control handle (3) is welded and fixed to the flange end cover (5), and can drive the connecting sleeve (12) to control and adjust the rotation of the HST speed regulating shaft (11).
[0012] The power chassis is controlled to move forward or backward by controlling the rotation angle of the HST speed regulating shaft (11) through the control handle (3), and the forward or backward speed can also be controlled.
Claims
1. A compacting speed regulating mechanism for a continuously variable speed tractor power chassis, characterized in that: The invention comprises a connecting sleeve (12), a cushion block (9), a butterfly spring (8), a locking sleeve (7) and a control handle (3), wherein the locking sleeve (7) is fixed to a housing (1) by means of bolts; the outer ring of the connecting sleeve (12) is arranged in the locking sleeve (7) and can rotate relatively thereto, and the inner ring of the connecting sleeve (12) is connected to an HST speed regulating shaft (11) of a hydrostatic transmission unit (10) by means of a square key; a pressing step (2) is arranged on the connecting sleeve (12) body, a butterfly spring (8) is arranged between the connecting sleeve (12) below the pressing step (2) and the locking sleeve (7), and the butterfly springs (8) are installed back to back; the connecting sleeve (12) is connected to the control handle (3) by means of a flange end cover (5) at the top.
2. A compression type speed regulating mechanism for a continuously variable speed tractor power chassis as claimed in claim 1, characterized in that: A bearing (6) is provided between the connecting sleeve (12) below the pressing step (2) and the locking sleeve (7), a butterfly spring (8) is provided below the bearing (6), and a replaceable cushion block (9) is provided between the butterfly spring (8) and the box body (1).