阅读说明：本技术 一种转向传动机构 (Steering transmission mechanism ) 是由 王艺霖 秦大国 唐可文 于 2020-05-15 设计创作，主要内容包括：本发明提供了一种转向传动机构,该转向传动机构包括：主动伞齿轴,从动伞齿,传动套,左半轴输出轴,右半轴输出轴,主动伞齿轴与从动伞齿相啮合,从动伞齿与传动套连接,左半轴输出轴、右半轴输出轴上分别设置有一个与传动套连接的离合装置,离合装置包括扭矩离合套和力矩传动钢球,通过控制力矩传动钢球与对应的半轴输出轴的结合与脱出,从而实现传动套与力矩传动钢球对应的半轴输出轴扭矩的传递与断开。上述的转向传动机构,在转向时,使一个半轴仍然处于旋转状态,同时使另一个半轴传递的扭矩断开,从而轻松实现机器自动转向。(The present invention provides a steering transmission mechanism, including: the driving bevel gear shaft is meshed with the driven bevel gear, the driven bevel gear is connected with the transmission sleeve, the left half shaft output shaft and the right half shaft output shaft are respectively provided with a clutch device connected with the transmission sleeve, each clutch device comprises a torque clutch sleeve and a torque transmission steel ball, and the transmission and disconnection of the torque of the half shaft output shaft corresponding to the transmission sleeve and the torque transmission steel ball are realized by controlling the combination and the disengagement of the torque transmission steel ball and the corresponding half shaft output shaft. The steering transmission mechanism enables one half shaft to be still in a rotating state and simultaneously enables the torque transmitted by the other half shaft to be disconnected during steering, so that automatic steering of the machine is easily realized.)

1. A steering gear, comprising:

the driving bevel gear shaft is meshed with the driven bevel gear, the driven bevel gear is connected with the transmission sleeve, a clutch device connected with the transmission sleeve is respectively arranged on the left half shaft output shaft and the right half shaft output shaft, the clutch device comprises a torque clutch sleeve and a torque transmission steel ball, and the transmission and disconnection of the transmission sleeve and the half shaft output shaft torque corresponding to the torque transmission steel ball are realized by controlling the combination and the disengagement of the torque transmission steel ball and the corresponding half shaft output shaft.

2. The steering gear according to claim 1, wherein the left half shaft output shaft and the right half shaft output shaft are both hexagonal half shafts.

3. The steering transmission mechanism according to claim 2, wherein the contact positions of the left half shaft output shaft and the right half shaft output shaft with the torque transmission steel ball are arranged in an arc inclined plane structure.

4. The steering transmission mechanism according to claim 2, wherein the left half shaft output shaft and the transmission sleeve, and the right half shaft output shaft and the transmission sleeve are in close clearance fit.

5. The steering transmission mechanism according to claim 4, wherein the left half shaft output shaft and the right half shaft output shaft are provided with grooves for transmitting torque, the grooves penetrate through the corresponding whole half shaft output shaft combination part, and the tail part is gradually reduced in groove depth.

6. The steering transmission mechanism according to claim 5, wherein the groove comprises a bottom surface and two side surfaces, the bottom surface and the two side surfaces are both arc-shaped, and the circle centers of the circles on the two side surfaces form an included angle of 5 degrees with a connecting line of the axes of the corresponding half-shaft output shafts.

7. Steering gear according to claim 6, characterised in that the circle of the side faces has a radius of 4cm and the circle of the bottom faces has a radius of 8 cm.

8. The steering transmission according to claim 4, wherein the chamfer angle of two adjacent grooves is 72 degrees.

9. The steering gear according to claim 4, wherein the width of the upper surface of the projection between two adjacent grooves is 4.73 cm.

10. The steering transmission mechanism according to any one of claims 1 to 9, wherein the torque clutch sleeve controls the torque transmission steel ball to be combined with and separated from the corresponding half-shaft output shaft by sliding left and right on the transmission sleeve, so that the torque transmission of the torque transmission steel ball and the corresponding half-shaft output shaft is realized.

Technical Field

The invention relates to the technical field of mini-tillers, in particular to a steering transmission mechanism.

Background

The mini-tiller is specially designed for cultivating sloping fields and small lands according to the topography of vast hills and mountainous areas in China, and is deeply favored by vast users due to the characteristics of light weight, small volume, simple structure, convenient operation and the like.

At present, output shafts of a micro-cultivator and a management machine are mostly in whole shaft transmission, the turning radius is large, and the steering difficulty in field operation can only be achieved by manpower.

Disclosure of Invention

The invention aims to provide a steering transmission mechanism, and aims to solve the problems that in the prior art, most output shafts of a mini-tiller and a management machine are driven by a whole shaft, the turning radius is large, and steering in field operation is difficult and only steering by manpower is required.

In order to solve the above technical problem, the present invention provides a steering transmission mechanism, including:

the driving bevel gear shaft is meshed with the driven bevel gear, the driven bevel gear is connected with the transmission sleeve, a clutch device connected with the transmission sleeve is respectively arranged on the left half shaft output shaft and the right half shaft output shaft, the clutch device comprises a torque clutch sleeve and a torque transmission steel ball, and the transmission and disconnection of the transmission sleeve and the half shaft output shaft torque corresponding to the torque transmission steel ball are realized by controlling the combination and the disengagement of the torque transmission steel ball and the corresponding half shaft output shaft.

Optionally, the left half-shaft output shaft and the right half-shaft output shaft are both hexagonal half shafts.

Optionally, the contact positions of the left half shaft output shaft and the right half shaft output shaft with the torque transmission steel ball are set to be arc inclined plane structures.

Optionally, the left half-shaft output shaft and the transmission sleeve, and the right half-shaft output shaft and the transmission sleeve are in small clearance fit.

Optionally, the left half-shaft output shaft and the right half-shaft output shaft are both provided with grooves for transmitting torque, the grooves penetrate through the corresponding whole half-shaft output shaft combination part, and the tail part adopts gradual change to reduce the groove depth.

Optionally, the groove includes a bottom surface and two side surfaces, the bottom surface and the two side surfaces are both arc-shaped, and an included angle formed by the circle centers of the circles on the two side surfaces and a line connecting the axes of the corresponding half-shaft output shafts is 5 degrees.

Optionally, the radius of the circle of the side surface is 4cm, and the radius of the circle of the bottom surface is 8 cm.

Optionally, the chamfer angle of two adjacent grooves is 72 degrees.

Optionally, the width of the upper surface of the convex part between two adjacent grooves is 4.73 cm.

Optionally, the torque clutch sleeve controls the torque transmission steel ball to be combined with and separated from the corresponding half-shaft output shaft by sliding the transmission sleeve left and right, so that the torque transmission of the torque transmission steel ball and the corresponding half-shaft output shaft is realized.

Advantageous effects

The present invention provides a steering transmission mechanism, including:

the driving bevel gear shaft is meshed with the driven bevel gear, the driven bevel gear is connected with the transmission sleeve, the left half shaft output shaft and the right half shaft output shaft are respectively provided with a clutch device connected with the transmission sleeve, each clutch device comprises a torque clutch sleeve and a torque transmission steel ball, and the transmission and disconnection of the torque of the half shaft output shaft corresponding to the transmission sleeve and the torque transmission steel ball are realized by controlling the combination and the disengagement of the torque transmission steel ball and the corresponding half shaft output shaft.

The steering transmission mechanism enables one half shaft to be still in a rotating state and simultaneously enables the torque transmitted by the other half shaft to be disconnected during steering, so that automatic steering of the machine is easily realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic cross-sectional view of a steering gear according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of a left half-shaft output shaft according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a half shaft output shaft according to an embodiment of the present invention;

description of reference numerals:

the torque clutch sleeve comprises a driving bevel gear shaft 1, a driven bevel gear 2, a transmission sleeve 3, a torque clutch sleeve 4, a torque transmission steel ball 5, a right half shaft output shaft 6, a left half shaft output shaft 7, a groove 8, a bottom surface 81, a side surface 82 and an arc inclined surface structure 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present embodiment will provide a steering transmission mechanism, which, referring to fig. 1, 2, 3, includes:

the transmission device comprises a driving bevel gear shaft 1, driven bevel gears 2, a transmission sleeve 3, a left half-shaft output shaft 7 and a right half-shaft output shaft 6, wherein the driving bevel gear shaft 1 is meshed with the driven bevel gears 2, the driven bevel gears 2 are connected with the transmission sleeve 3, a clutch device connected with the transmission sleeve 3 is respectively arranged on the left half-shaft output shaft 7 and the right half-shaft output shaft 6, the clutch device comprises a torque clutch sleeve 4 and a torque transmission steel ball 5, and the transmission and disconnection of the torque of the half-shaft output shaft corresponding to the transmission sleeve 3 and the torque transmission steel ball 5 are realized by controlling the combination and the disconnection of the torque transmission steel ball 5 and the corresponding half-shaft output shaft.

The steering transmission mechanism enables one half shaft to be still in a rotating state and simultaneously enables the torque transmitted by the other half shaft to be disconnected during steering, so that automatic steering of the machine is easily realized.

Optionally, the left half-shaft output shaft 7 and the right half-shaft output shaft 6 are both hexagonal half shafts.

Optionally, the contact positions of the left half shaft output shaft 7 and the right half shaft output shaft 6 with the torque transmission steel ball 5 are set to be arc inclined plane structures 9. Thus, the phenomenon that the edge of the half shaft contacted with the torque transmission steel ball 5 is cracked and deformed due to clamping stagnation when the torque transmission steel ball 5 rolls up and down in the shaft groove is avoided.

Optionally, the left half-shaft output shaft 7 and the transmission sleeve 3, and the right half-shaft output shaft 6 and the transmission sleeve 3 are in small clearance fit. This makes the strength of the two half shafts more reliable and durable.

Optionally, the left half-shaft output shaft 7 and the right half-shaft output shaft 6 are both provided with a groove 8 for transmitting torque, the groove 8 penetrates through the corresponding whole half-shaft output shaft combination part, and the tail (i.e., the left end part of the groove 8 in fig. 2) adopts gradual change to reduce the groove depth, i.e., the tail groove depth is gradually reduced and gradually changed; thus, torque transmission is guaranteed, and meanwhile lubricating oil can lubricate the whole contact surface when the half shaft rotates relative to the transmission sleeve 3, so that the two parts cannot be sintered and occluded.

Optionally, the groove 8 includes a bottom surface 81 and two side surfaces 82, both the bottom surface 81 and the two side surfaces 82 are circular arcs, and the centers of the circles of the two side surfaces 82 form an included angle of 5 degrees with a connecting line of the axes of the corresponding half-shaft output shafts. That is, for the same groove 8, the included angle formed by the circle centers of the circles of the two side surfaces 82 and the axis connecting line of the half shaft output shaft is 5 degrees. In fig. 3, for the same groove 8, the angle formed by the circle centers of the left and right circles with the radius of 4cm and the line connecting the axle center of the half-shaft output shaft is 5 degrees.

Alternatively, the radius of the circle of the side surface 82 is 4cm and the radius of the circle of the bottom surface 81 is 8 cm. 12 × R4 in fig. 3 indicates a circle with a radius of 4cm and 12 circular arcs; 6R 8 shows a circle with a radius of 8cm and 6 circular arcs.

Alternatively, the chamfer angle of two adjacent grooves 8 is 72 degrees.

Alternatively, the width of the upper surface of the convex portion between two adjacent grooves 8 is 4.73 cm.

Optionally, the torque clutch sleeve 4 controls the combination and the disengagement of the torque transmission steel ball 5 and the corresponding half-shaft output shaft by sliding left and right on the transmission sleeve 3, so as to realize the transmission and the disconnection of the torque transmission steel ball 5 and the corresponding half-shaft output shaft.

When torque is transmitted, the torque clutch sleeve 4 presses the torque transmission steel ball 5 into the groove 8, so that the torque transmission steel ball 5 is in contact with one side surface 82, the torque of the transmission sleeve 3 is transmitted to one side surface 82 of the groove 8 of the corresponding half-shaft output shaft through the torque transmission steel ball 5, and the rotation of the corresponding half-shaft output shaft is realized.

Optionally, the driven bevel 2 is splined to the driving sleeve 3.

The power of the gearbox is transmitted to the driving bevel gear shaft 1, and the driving bevel gear shaft 1 is transmitted to the driven bevel gear 2 through bevel gear meshing; the driven bevel gear 2 and the transmission sleeve 3 are in spline fit, so that the driven bevel gear 2 transmits torque to the transmission sleeve 3; the transmission sleeve 3 transmits torque to a left half-shaft output shaft 7 and a right half-shaft output shaft 6 through a torque transmission steel ball 5; the torque clutch sleeve 4 controls the combination and the separation of the steel balls through sliding left and right on the transmission sleeve 3, so that the torque transmission and the disconnection of the torque transmission steel balls 5 and the left half-shaft output shaft 7 and the torque transmission of the right half-shaft output shaft 6 are realized, the rotation and the stop of the half shafts are controlled, and the steering of the whole machine is realized.

The steering transmission mechanism provided by the embodiment adopts two half shafts for transmission, and the structural parts of the two half shafts are matched with each other through holes and shafts to form a relatively rotatable whole, so that the structural strength is high, and the integrity is good; in addition, two hexagonal output shaft half shafts are respectively provided with one bearing on the left and the right in the bearing application, so that the cost is saved compared with the prior art that two bearings are respectively provided on the left and the right, and meanwhile, the axial distance of the box body is shorter, so that the whole machine is more compact; and the same rotary tillage cutter is arranged to carry out rotary tillage operation, so that the missing tillage width is smaller, and the tillage effect is better.

The steering transmission mechanism provided by the embodiment has the advantages of simple and compact structure, better reliability and low failure rate, realizes the half-shaft steering function under the condition of fewer transmission parts, has low production cost of the overall structure, and can bring better experience and income for users and enterprises.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and additions can be made without departing from the principle of the present invention, and these should also be considered as the protection scope of the present invention.