Multi-wedge belt-gear transmission mechanism of yaw tractor

Abstract

The utility model relates to a poly V-belt-gear transmission mechanism of a yaw tractor, and belongs to the technical field of agricultural machinery in hilly and mountainous areas. According to the mechanism, through innovative integration of multi-wedge belt flexible transmission and gear rigid transmission, automatic compensation of axis deviation and efficient power transmission are achieved. Specifically, a poly V-belt wheel 1 is connected with an output shaft of an engine through a spline, power is transmitted to a poly V-belt wheel 2 through a poly V-belt, and the high friction coefficient and the elastic deformation capacity of the poly V-belt are utilized to adapt to dynamic axis changes; the rotating center shaft is connected with a gearbox input shaft through a gearbox assembly, rigid transmission is completed through a cylindrical gear set, and the stability under the large load is ensured. The tensioning wheel assembly provides constant tension to prevent slipping; the deep groove ball bearing supports all rotating parts, and friction loss is reduced. The flexible transmission mechanism has the self-adaptability of flexible transmission and the high-efficiency reliability of gear transmission, the transmission efficiency, the equipment service life and the safety of a tractor in hilly and mountainous area operation are remarkably improved, and a low-cost solution is provided for agricultural mechanization in complex terrains.

Description

Technical Field

[0001] This invention relates to a multi-wedge belt-gear transmission mechanism for a lateral tractor, belonging to the field of agricultural machinery technology in hilly and mountainous areas. Background Technology

[0002] my country's hilly and mountainous terrain is complex, with steep slopes, irregular plots, and significant differences in elevation between adjacent sections. This necessitates frequent adjustments to the center of gravity of traditional tractors in such terrain. To improve stability during slope operations, tractors need to adjust their vehicle posture in real time using lateral attitude adjustment mechanisms (such as hydraulic leveling systems) to prevent tipping. However, such leveling operations cause dynamic changes in the relative position between the engine output shaft and the gearbox input shaft, leading to misalignment of the two shafts. This, in turn, results in reduced power transmission efficiency, abnormal wear of transmission components, and even power interruption, seriously affecting operational safety and equipment lifespan. Utility Model Content

[0003] This utility model provides a multi-wedge belt-gear transmission mechanism for a yaw tractor, which aims to solve the problem of misalignment between the engine output shaft and the gearbox input shaft caused by the dynamic adjustment of the center of gravity of the yaw tractor in hilly and mountainous terrain.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A yaw tractor multi-ribbed belt-gear transmission mechanism includes a clutch housing, which is fixedly mounted on the yaw section of the frame. An engine output shaft is provided on the clutch housing, and the multi-ribbed pulley 1 is connected to the engine output shaft via a spline.

[0006] The multi-ribbed pulley 2 is connected to the multi-ribbed pulley 1 via a multi-ribbed belt. The tensioner assembly is fixedly mounted on the clutch housing. The multi-ribbed belt connects the multi-ribbed pulley 1, the multi-ribbed pulley 2, and the tensioner assembly.

[0007] The multi-ribbed pulley 2 is splinedly connected to the rotating central shaft. The rotating central shaft is rotatably mounted with a vertical bearing housing assembly and a gearbox assembly, and rolls with the rotating central shaft through deep groove ball bearings 4 and 3. The rotating central shaft is connected to the gearbox input shaft through the gearbox assembly.

[0008] The cylindrical gear 2 is splinedly connected to the rotating central shaft. The cylindrical gear 2 drives the gear shaft through external meshing. The gear shaft is rotatably mounted on the gearbox housing and makes rolling contact with the gearbox housing through the deep groove ball bearing 2. The gear shaft drives the cylindrical gear 1 through external meshing. The cylindrical gear 1 is splinedly connected to the gearbox input shaft. The gearbox shaft is rotatably mounted on the gearbox housing and makes rolling contact with the gearbox housing through the deep groove ball bearing 1, thereby achieving power transmission without changing the rotation direction of the gearbox shaft.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This invention innovatively combines multi-wedge belt flexible transmission with gear rigid transmission, which not only solves the problem of axis misalignment caused by dynamic leveling of tractors in hilly and mountainous areas and avoids the phenomenon of misalignment between the engine output shaft and the gearbox input shaft during tractor center of gravity adjustment, but also overcomes the defect of insufficient load capacity of pure flexible transmission. It is significantly superior to existing technologies in terms of transmission efficiency, structural reliability, maintenance economy and terrain adaptability, providing an efficient and low-cost solution for agricultural mechanization. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a multi-wedge belt-gear transmission mechanism for a swaying tractor;

[0012] Figure 2 for Figure 1 A sectional view;

[0013] In the diagram: 1-Clutch housing; 2-Multi-ribbed belt; 3-Engine output shaft; 4-Multi-ribbed pulley 1; 5-Gearbox assembly; 51-Spiral gear 1; 52-Deep groove ball bearing 1; 53-Gear shaft; 54-Deep groove ball bearing 2; 55-Spiral gear 2; 56-Deep groove ball bearing 3; 57-Gearbox housing; 6-Transmission input shaft; 7-Rotation center shaft; 8-Vertical bearing housing assembly; 81-Vertical bearing housing; 82-Deep groove ball bearing 4; 9-Multi-ribbed pulley 2; 10-Tensioner assembly. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-2 This utility model discloses a multi-ribbed belt-gear transmission mechanism for a yaw tractor, including a clutch housing (1), an engine output shaft (3) is provided on the clutch housing (1), the multi-ribbed pulley 1 (4) is connected to the engine output shaft (3) via a spline, the multi-ribbed pulley 2 (9) is connected to the multi-ribbed pulley 1 (4) via a multi-ribbed belt (2), the multi-ribbed pulley 2 (9) is splined connected to a rotating center shaft (7), and the rotating center shaft (7) is connected to the gearbox input shaft (6) via a gearbox assembly (5).

[0016] Please see Figure 1-2The multi-ribbed pulley 1 (4) is connected to the engine output shaft (3) by an internal spline to transmit diesel engine power. The multi-ribbed pulley 1 (4) and the multi-ribbed pulley 2 (9) are connected by a multi-ribbed belt (2) to complete power transmission. The tensioning wheel assembly (10) is fixedly installed on the clutch housing (1) to provide tension to the multi-ribbed belt (2) and prevent slippage. The multi-ribbed pulley 2 (9) is spline-connected to the rotating center shaft (7). The rotating center shaft (7) is rotatably mounted with the vertical bearing housing assembly (5) and the gearbox assembly (5). The rotating center shaft (7) and the gearbox housing (57) are in rolling contact through the deep groove ball bearing 4 (82) and the deep groove ball bearing 3 (56).

[0017] Please see Figure 1-2 The cylindrical gear 2 (55) is splined to the rotating center shaft (7). The cylindrical gear 2 (55) drives the gear shaft (53) through external meshing. The gear shaft (53) is rotatably mounted on the gearbox housing (57) and rolls with the gearbox housing (57) through the deep groove ball bearing 2 (53). The gear shaft (53) drives the cylindrical gear 1 (51) through external meshing. The cylindrical gear 1 (51) is splined to the gearbox input shaft (6). The gearbox input shaft (6) is rotatably mounted on the gearbox housing (57) and rolls with the gearbox housing (57) through the deep groove ball bearing 1 (52).

[0018] The working principle of this utility model:

[0019] This invention solves the problem of misalignment between the engine and gearbox shafts caused by dynamic leveling in swaying tractors in hilly and mountainous areas through a composite design of flexible multi-ribbed belt transmission and rigid gear transmission. Power is transmitted from the engine output shaft via a multi-ribbed belt. When the tractor sways left and right, the engine output shaft swings around the central axis of rotation. The multi-ribbed belt pulley 1 is connected to the engine output shaft via a spline, and the multi-ribbed belt pulley 2 is connected to the multi-ribbed belt pulley 1. Utilizing the high coefficient of friction and elastic deformation capacity of the multi-ribbed belt, the shaft misalignment is automatically compensated for, while a tension pulley adjusts the tension in real time to prevent slippage. The multi-ribbed belt pulley 2 is splined to the central axis of rotation, which is connected to the gearbox input shaft via a gearbox assembly. The central axis of rotation and the gearbox input shaft use gear transmission to ensure stable and efficient power output. This rigid-flexible structure adapts to the dynamic shaft changes caused by frequent leveling while ensuring reliability and transmission efficiency under heavy loads, significantly improving the safety and equipment lifespan in complex terrain operations.

Claims

1. A cross-drag tractor multi-vee belt and gear drive mechanism characterized by, It includes: Clutch housing (1), tensioner assembly (10), cylindrical gear 2 (55), multi-wedge pulley 1 (4), multi-wedge pulley 2 (9), the clutch housing (1) is provided with engine output shaft (3), the multi-wedge pulley 1 (4) is connected with engine output shaft (3) through spline, the multi-wedge pulley 2 (9) is connected with multi-wedge pulley 1 (4) through multi-wedge belt (2), the multi-wedge pulley 2 (9) is spline connected with rotating central shaft (7), the rotating central shaft (7) is connected with gearbox input shaft (6) through gear box assembly (5).

2. The cross-chassis tractor multi-vee belt and gear drive of claim 1 wherein, The multi-wedge pulley 1 (4) and the engine output shaft (3) are connected by inner spline, and the diesel engine power transmission is carried out, the multi-wedge pulley 1 (4) and the multi-wedge pulley 2 (9) are connected through the belt multi-wedge belt (2), and the power transmission is completed, the tensioner assembly (10) is fixedly installed on the clutch housing (1), provides tension for the multi-wedge belt (2), prevents the phenomenon of slipping, the multi-wedge pulley 2 (9) is spline connected with rotating central shaft (7), the rotating central shaft (7) is rotatably installed vertical bearing seat assembly (8) and gear box assembly (5), and the deep groove ball bearing 4 (82), the deep groove ball bearing 3 (56) and the rotating central shaft (7), the gear box shell (57) are in rolling contact, so that the transmission mechanism is more simple, and the interference phenomenon is avoided when the gravity center is adjusted.

3. The cross-chassis tractor multi-vee belt and gear drive of claim 1 wherein, The cylindrical gear 2 (55) is spline connected with rotating central shaft (7), the cylindrical gear 2 (55) is driven by the external meshing gear shaft (53), the gear shaft (53) is rotatably installed gear box shell (57), and the deep groove ball bearing 2 (54) and the gear box shell (57) are in rolling contact, the gear shaft (53) drives the cylindrical gear 1 (51) by external meshing, the cylindrical gear 1 (51) is spline connected with gearbox input shaft (6), the gearbox input shaft (6) is rotatably installed gear box shell (57), and the deep groove ball bearing 1 (52) and the gear box shell (57) are in rolling contact, so that the power transmission is more efficient and more accurate without changing the rotating direction of the gearbox input shaft (6).

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