Steering mechanism of multifunctional miniature field management machine

Abstract

A steering mechanism of a multifunctional mini-type field management machine is composed of a side cover, a steering shifting fork shaft, a steering shifting fork, an output half shaft, a spring, a clutch sleeve, a middle driving sleeve, a steel ball, a needle bearing and the like. The speed reducer is characterized in that a plurality of spline grooves are formed in the output half shaft, round holes are formed in the hole walls, corresponding to the spline grooves, of the middle driving sleeve, multi-stage inner holes are formed in the clutch sleeve, and the steel balls are arranged in the spline grooves in the output half shaft and between the round holes in the hole walls of the middle driving sleeve and the inner hole walls of the clutch sleeve; power transmission and separation are achieved by changing the radial positions of the steel balls. The steering device is compact in structure, flexible in steering and labor-saving.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a steering mechanism for a multifunctional miniature garden management machine. Background Technology

[0002] Multifunctional mini garden tillers are currently widely used, replacing manual labor for various garden management tasks. However, most mini garden tillers on the market lack a steering mechanism, requiring manual maneuvering for turning, which is extremely laborious. While some mini garden tillers do have a steering mechanism, most use a three- or multi-jaw chuck connection for power transmission. During turning, this results in significant frictional resistance on the jaws, making it difficult for the jaws to disengage and leading to poor steering reliability. Summary of the Invention

[0003] The purpose of this invention is to provide a reliable, flexible, and multifunctional steering mechanism for a miniature garden tiller, addressing the shortcomings of existing technologies. This mechanism effectively solves the problem of laborious manual steering operation when using a miniature garden tiller.

[0004] To achieve the purpose of the invention, the technical solution provided by this utility model is: a multifunctional miniature garden management machine steering mechanism, which is composed of a side cover 1, a steering fork shaft 2, a steering fork 3, an output half shaft 6, a spring 5, a clutch sleeve 4, an intermediate drive sleeve 8, a steel ball 7, a needle roller bearing 9 and other components. The steering fork shaft 2 is mounted on the side cover 1. The lower part of the steering fork shaft 2 is connected to the steering fork 3. The fork head of the steering fork 3 is embedded in the outer circular groove of the clutch sleeve 4. The clutch sleeve 4 is mounted on the output half shaft 6. It can move axially along the output half shaft 6 and can also rotate on the output half shaft 6. A spring 5 is provided between the clutch sleeve 4 and the deep groove ball bearing mounted on the output half shaft 6. A needle roller bearing 9 is provided between the output half shaft 6 and the intermediate drive sleeve 8. The output half shaft 6 has multiple spline grooves. Each spline groove has a corresponding circular hole on the hole wall of the intermediate drive sleeve 8. The clutch sleeve 4 has multiple levels of inner holes. The steel ball 7 is placed in the spline groove on the output half shaft 6, between the circular hole on the hole wall of the intermediate drive sleeve 8 and the inner hole wall of the clutch sleeve 4. Under the tension of the spring 5, the inner wall of the middle hole of the clutch sleeve 4 restricts the steel ball 7 in the spline groove on the output half shaft 6 and the circular hole on the hole wall of the intermediate drive sleeve 8 to achieve power transmission. By manipulating the steering fork and moving the clutch sleeve, the axial position of the clutch sleeve is changed, and the radial position of the steel ball is controlled, so as to connect or disconnect the output half shaft and the intermediate drive sleeve, thereby realizing the transmission and separation of power.

[0005] The present invention is characterized in that the output half shaft is provided with a spline groove, the intermediate drive sleeve hole wall is provided with a round hole, the clutch sleeve is provided with a multi-stage inner hole, and the intermediate drive sleeve and the output half shaft are connected by a steel ball to transmit power.

[0006] This invention features a compact structure, stable and reliable steering performance, and labor-saving operation, making it highly suitable for steering multi-functional mini garden tillers. It solves the problem of laborious manual steering operation currently faced by mini garden tillers. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model.

[0008] Figure 2 This is a schematic diagram of the installation structure of the present invention on the walking box of the multifunctional mini garden management machine.

[0009] In the diagram, 1. Side cover, 2. Steering fork shaft, 3. Steering fork, 4. Clutch sleeve, 5. Spring, 6. Output half shaft, 7. Steel ball, 8. Intermediate drive sleeve, 9. Needle roller bearing. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0011] This utility model provides a multifunctional miniature garden tiller steering mechanism, such as Figure 1 As shown, the device comprises a side cover 1, a steering fork shaft 2, a steering fork 3, an output half-shaft 6, a spring 5, a clutch sleeve 4, an intermediate drive sleeve 8, steel balls 7, and needle roller bearings 9. Its key feature is that the steering fork shaft 2 is mounted on the side cover 1, and its lower part is connected to the steering fork 3. The fork head of the steering fork 3 is embedded in the outer circular groove of the clutch sleeve 4. The clutch sleeve 4 is mounted on the output half-shaft 6, allowing it to move axially along and rotate on the output half-shaft 6. A spring 5 is provided between the clutch sleeve 4 and the deep groove ball bearing mounted on the output half-shaft 6. A needle roller bearing 9 is provided between the output half-shaft 6 and the intermediate drive sleeve 8. The output half-shaft 6 has multiple spline grooves, and each spline groove corresponds to a circular hole on the wall of the intermediate drive sleeve 8. The clutch sleeve 4 has multiple levels of inner holes. The steel balls 7 are placed between the spline grooves on the output half-shaft 6, the circular holes on the wall of the intermediate drive sleeve 8, and the inner wall of the clutch sleeve 4.

[0012] In specific implementation, such as Figure 2As shown, the steering mechanism of this utility model is symmetrically arranged on the left and right output half-shafts 6 of the power output of the multi-functional mini garden tiller. During normal operation, under the tension of the spring 5, the inner wall of the middle hole of the clutch sleeve 4 restricts the steel ball 7 in the spline groove on the output half-shaft 6 and the round hole on the wall of the intermediate drive sleeve 8. Torque is transmitted through the steel ball 7 to achieve power output. When it is necessary to turn to the left or right, the steering fork shaft 2 on the corresponding side is operated. The steering fork 3 moves the clutch sleeve 4 to overcome the tension of the spring 5 and move axially along the output half-shaft 6. After the steel ball 7 loses the restriction of the inner wall of the middle hole of the clutch sleeve 4, it will automatically disengage from the spline groove on the output half-shaft 6 and be restricted in the inner wall of the large hole of the clutch sleeve 4 and the round hole on the wall of the intermediate drive sleeve 8. The output half-shaft 6 stops rotating because it loses the power transmission from the steel ball 7. The output half-shaft 6 on the opposite side continues to rotate under the drive of the engine, thus completing the steering.

Claims

1. A multi-functional micro-land management machine steering mechanism, which is composed of side cover (1), steering yoke shaft (2), steering yoke (3), output half shaft (6), spring (5), clutch cover (4), intermediate drive cover (8), steel ball (7), needle roller bearing (9) components, characterized in that, The steering yoke shaft (2) is installed on the side cover (1), the lower part of the steering yoke shaft (2) is connected with the steering yoke (3), the prong of the steering yoke (3) is embedded in the outer circular groove of the clutch sleeve (4), the clutch sleeve (4) is installed on the output half shaft (6), it can move axially along the output half shaft (6) and rotate on the output half shaft (6), the spring (5) is arranged between the clutch sleeve (4) and the deep groove ball bearing installed on the output half shaft (6), the needle bearing (9) is arranged between the output half shaft (6) and the intermediate drive sleeve (8), a plurality of spline grooves are arranged on the output half shaft (6), a round hole is arranged on the hole wall of each corresponding intermediate drive sleeve (8), a plurality of inner holes are arranged on the clutch sleeve (4), the steel ball (7) is arranged between the spline groove on the output half shaft (6), the round hole on the hole wall of the intermediate drive sleeve (8) and the inner hole wall of the clutch sleeve (4); under the tension of the spring (5), the inner hole wall of the clutch sleeve (4) limits the steel ball (7) in the spline groove on the output half shaft (6) and the round hole on the hole wall of the intermediate drive sleeve (8) to realize power transmission.

Images