CN216407543U

CN216407543U - Power switching device and clutch

Info

Publication number: CN216407543U
Application number: CN202123015635.3U
Authority: CN
Inventors: 罗维; 王义超; 唐辉
Original assignee: Chongqing Zongshen General Power Machine Co Ltd
Current assignee: Chongqing Zongshen General Power Machine Co Ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-04-29
Anticipated expiration: 2031-12-03

Abstract

The utility model relates to the technical field of transmission systems, and provides a power switching device for solving the problem of high clutch cost caused by complex pressure applying structure in the prior art, which comprises a planetary transmission mechanism, a clutch assembly and a switching structure, wherein the clutch assembly and the switching structure are arranged in the axial direction of the planetary transmission mechanism; grooves are respectively and correspondingly formed in the surface, facing the clutch plate assembly, of the rotating disc and the surface, facing the rotating disc, of the clutch plate assembly, and rolling parts for pushing the clutch plate assembly to move in the axial direction during movement are arranged in the grooves; wherein: the linkage assembly comprises a driving part which drives the rotating disc to move, and the driving part is connected with the rotating disc. The utility model also provides a clutch.

Description

Power switching device and clutch

Technical Field

The utility model relates to the technical field of transmission systems, in particular to a power switching device and a clutch.

Background

At present, a clutch adopted by a mini-tiller is mostly a friction clutch, and when the mini-tiller works, two clutch plates of the clutch need to be clamped or separated from a planetary transmission mechanism according to working conditions so as to realize power switching. However, because the regions of China are wide and the terrain is various, such as the hilly terrain in the south, the situation that the clutch slips or the clutch operation is unsmooth and wrong when the mini-tiller is operated on bumpy ground or under high load can occur, and in the past, the clutch can be damaged, so that the mini-tiller cannot operate normally.

In order to reduce the slipping of the clutch, in the prior art, a pressure applying structure is additionally arranged in the clutch, the pressure applying structure comprises a rotating disc arranged on one side of the axial direction of the clutch plates, the planetary transmission mechanism can be clamped by the two clutch plates more stably after the rotating disc rotates, and the two clutch plates are separated from the planetary transmission mechanism when the rotating disc rotates reversely. However, the related art pressure applying structure is complicated, resulting in high cost of the clutch.

SUMMERY OF THE UTILITY MODEL

One of the objectives of the present invention is to provide a power switching device to solve the problem of high cost of the clutch due to the complicated pressing structure in the prior art.

The basic scheme provided by the utility model is as follows: a power switching device comprises a planetary transmission mechanism, a clutch assembly and a switching structure, wherein the clutch assembly and the switching structure are arranged in the axial direction of the planetary transmission mechanism; grooves are correspondingly formed in the surface, facing the clutch plate assembly, of the rotating disc and the surface, facing the rotating disc, of the clutch plate assembly respectively, and rolling parts for pushing the clutch plate assembly to move in the axial direction during movement are arranged in the grooves; wherein: the linkage assembly comprises a driving part which drives the rotating disc to move, and the driving part is connected with the rotating disc.

The basic scheme has the beneficial effects that: in this scheme, in the switching structure, the atress that sets up to the rolling disc of drive division provides the impetus, when the tight clutch disc of needs clamp, to the drive division application of force, drive division can drive the rolling disc and rotate, thereby the tight planetary drive mechanism of drive clutch disc follow axial direction clamp, thereby realize the transmission of power, and when drive rolling disc antiport is driven at drive division, the clutch disc breaks away from with planetary drive mechanism, thereby realize the switching process of power, moreover, the steam generator is simple in structure, thereby the cost of clutch has been reduced. Further, the driving portion and the rotating disk are integrally formed. Has the advantages that: in this scheme, integrated into one piece's setting makes things convenient for the processing of rolling disc.

Furthermore, the clutch assembly is arranged on the support, a groove is formed in the surface, facing the rotating disc, of the support, and the linkage assembly comprises an elastic piece capable of pushing the support to be away from the planetary transmission mechanism. Has the advantages that: in the scheme, the arrangement of the elastic piece can lead the clutch piece assembly and the planetary transmission mechanism to be separated forcibly, thereby ensuring thorough separation; and the arrangement of the support can ensure that the elastic part does not influence the clamping of the clutch plate assembly on the planetary transmission mechanism, and simultaneously ensure that the clutch plate assembly has enough strength.

Further, the linkage assembly comprises a driving arm, and one end of the driving arm is connected with the driving part and can drive the driving part to swing. Has the advantages that: the setting of actuating arm is convenient in this scheme to carry out the application of force to drive portion.

Furthermore, the planetary transmission mechanism comprises a gear ring, the linkage assembly comprises a friction pair, and the friction pair is sleeved on the gear ring. Has the advantages that: in this scheme, the vice setting up of friction has increased clutch plate and planetary transmission mechanism's contact surface, and when clutch plate presss from both sides tight planetary transmission mechanism, bigger contact surface can increase frictional force to strengthen and press from both sides tight effect.

Furthermore, the driving arm comprises a driven arm, a second connecting rod and a driving arm, one end of the first connecting rod is connected with the driving part, the other end of the first connecting rod is hinged with one end of the driven arm, the other end of the driven arm is hinged with one end of the second connecting rod, and the other end of the second connecting rod is connected with the driving arm in a clamping mode. Has the advantages that: in this scheme, the cooperation through first connecting rod, driven arm, second connecting rod and driving arm realizes the drive to the drive division easy operation.

Another object of the present invention is to provide a clutch including a housing, wherein the power switching device is provided in the housing. Has the advantages that: in the scheme, the arrangement of the power switching device can ensure that the clutch is more reliable to use.

Further, a bearing is arranged between the shell and the rotating disc. Has the advantages that: in this scheme, the setting of bearing can reduce the jamming sense that the rolling disc appears when rotating and between the casing for the separation and reunion operation is more smooth and easy, improves user's operation and experiences.

Furthermore, a mounting hole is formed in the shell, one end of the second connecting rod is hinged to the mounting hole, and a torsion spring is arranged at one end, hinged to the mounting hole, of the second connecting rod. Has the advantages that: in this scheme, when the drive division need drive the rolling disc antiport, utilize the elasticity of torsional spring to drive the reverse swing of driven arm to realize the antiport of rolling disc, need not to exert external force, easy operation.

Drawings

FIG. 1 is a schematic diagram of a clutch in a power switching device and a clutch according to an embodiment of the present invention;

FIG. 2 is a top view of the power switching device of FIG. 1 shown installed in a housing;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a schematic view of the trench of FIG. 2;

fig. 5 is a partial schematic view of the clutch plate assembly of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a shell 10, a pull wire 11, a tension spring 12, a torsion spring 13, a driving arm 14, a second connecting rod 15, a driven arm 16, a first connecting rod 17, a driving part 18, a rotating disc 20, a groove 21, a rolling part 22, a clutch plate assembly 23, a mounting part 231, a clutch part 232, an elastic piece 24, a friction pair 25 and a bearing 26.

Example one

Substantially as shown in figures 2 and 3: a power switching device comprises a planetary transmission mechanism, a clutch assembly and a switching structure, wherein the clutch assembly and the switching structure are arranged in the axial direction of the planetary transmission mechanism, the planetary transmission mechanism comprises a gear ring, a friction pair 25 is sleeved outside the gear ring, the friction pair 25 is fixedly connected with the gear ring or integrally formed, the clutch assembly 23 comprises a clutch part 232 and an installation part 231, as shown in fig. 5, in the embodiment, the friction pair 25 is fixedly arranged with the gear ring, and the clutch assembly 23 is provided with two groups which are respectively positioned above and below the planetary transmission mechanism. In other embodiments, the clutch plate assemblies 23 may be provided in a set between the planetary gear and the rotating disk.

The switching structure comprises a linkage assembly and a rotating disc 20 which drives a clutch plate assembly 23 to move and clamp a friction pair 25, the linkage assembly comprises a driving part 18 which drives the rotating disc 20 to move, the driving part 18 and the rotating disc 20 are fixedly connected or integrally formed, and in the embodiment, the driving part 18 and the rotating disc 20 are integrally formed.

The upper surface of the rotating disc 20 and the lower surface of the clutch plate assembly 23 adjacent to the rotating disc 20 are respectively provided with a plurality of grooves 21 of equal number and corresponding depth alternately, as shown in fig. 4. The groove 21 is internally provided with a rolling part 22, when the rolling part 22 moves from the deep position of the groove 21 to the shallow position of the groove 21, the distance between the rotating disc 20 and the clutch plate assembly 23 is increased, the clutch plate assembly 23 is pressed upwards, the distance between the clutch plate assembly 23 and the friction pair 25 is reduced, and the friction pair 25 is clamped.

The linkage assembly further includes a driving arm and an elastic member 24 capable of pushing the clutch plate assembly 23 away from the planetary transmission mechanism, one end of the driving arm is connected to the driving portion 18 and can drive the driving portion 18 to swing, in this embodiment, two ends of the elastic member 24 are in surface contact with the mounting portion 231 of the clutch plate assembly 23, respectively, in this embodiment, the elastic member 24 is a compression spring. Specifically, the driving arm comprises a first connecting rod 17, a driven arm 16, a second connecting rod 15 and a driving arm 14, one end of the first connecting rod 17 is connected with the driving portion 18, the other end of the first connecting rod is hinged to one end of the driven arm 16, the other end of the driven arm 16 is hinged to one end of the second connecting rod 15, and the other end of the second connecting rod 15 is clamped to the driving arm 14.

As shown in fig. 1, the embodiment further discloses a clutch, the clutch includes a housing 10, the power switching device is mounted on the housing 10, a bearing 26 is further disposed between the housing 10 and the rotating disc 20, specifically, a mounting hole is disposed on the housing 10, one end of the second connecting rod 15 is hinged to the mounting hole, and a torsion spring 13 is disposed at one end of the second connecting rod 15 hinged to the mounting hole.

The specific implementation process is as follows: taking the micro-cultivator provided with the clutch in the embodiment as an example, one end of the driving arm 14 is also connected with a clutch handle of the micro-cultivator through a tension spring 12 and a pull wire 11. In the initial state, the clutch plate assembly 23 is disengaged from the friction pair 25 of the planetary transmission, the compression spring is in the released state, and the rolling portion 22 is located deep in the groove 21. When the clutch handle is used, a user pinches the clutch handle, pulls the pull wire 11 and the tension spring 12, so that the driving arm 14 is pulled to swing, the driving arm 14 drives the second connecting rod 15 to rotate after swinging, the second connecting rod 15 drives the driven arm 16 to swing, the first connecting rod 17 is driven to move, and the moving first connecting rod 17 drives the driving part 18 to move, so that the rotating disc 20 is driven to rotate. In the process of rotating the rotating disc 20, the rolling part 22 moves from the deep position of the groove 21 to the shallow position of the groove 21, so that the clutch plate assembly 23 moves towards the friction pair 25, the distance between the clutch plate assembly 23 and the friction pair 25 is reduced, the friction pair 25 is clamped, the planetary transmission mechanism is clamped, the power output of the planetary transmission mechanism is completed, and the mini-tiller can perform tillage operation or walking.

When the clutch handle is loosened, the driven arm 16 swings reversely under the action of the torsion spring 13, so that the driving part 18 is driven to rotate reversely, the rolling part 22 returns to the deep part of the groove 21 from the shallow part of the groove 21, the clutch plate assembly 23 at the lower part descends under the action of self gravity and the thrust of the elastic part 24, the clutch plate assembly 23 is separated from the friction pair 25, and the mini-tiller does not move any more at this time.

Example two

The difference from this embodiment is that in this embodiment, a bracket is further included, the clutch assembly 23 near the rotating disk is disposed on the bracket, and a groove is disposed on the surface of the bracket facing the rotating disk.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art, and it will be appreciated by those skilled in the art that the present invention has been made available to those skilled in the art after the filing date or priority date, and that the present invention may be implemented by those skilled in the art by applying ordinary skill in the art, without departing from the spirit and scope of the present invention. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A power switching device comprises a planetary transmission mechanism, a clutch assembly and a switching structure, wherein the clutch assembly and the switching structure are arranged in the axial direction of the planetary transmission mechanism; grooves are correspondingly formed in the surface, facing the clutch plate assembly, of the rotating disc and the surface, facing the rotating disc, of the clutch plate assembly respectively, and rolling parts for pushing the clutch plate assembly to move in the axial direction during movement are arranged in the grooves; the method is characterized in that: the linkage assembly comprises a driving part which drives the rotating disc to move, and the driving part is connected with the rotating disc.

2. The power switching apparatus according to claim 1, characterized in that: the driving part and the rotating disc are integrally formed.

3. The power switching apparatus according to claim 1 or 2, characterized in that: the clutch assembly is arranged on the support, the groove is formed in the surface, facing the rotating disc, of the support, and the linkage assembly comprises an elastic piece capable of pushing the support to be far away from the planetary transmission mechanism.

4. The power switching apparatus according to claim 3, characterized in that: the linkage assembly comprises a driving arm, and one end of the driving arm is connected with the driving part and can drive the driving part to swing.

5. The power switching apparatus according to claim 4, characterized in that: the planetary transmission mechanism comprises a gear ring, the linkage assembly comprises a friction pair, and the friction pair is sleeved on the gear ring.

6. The power switching apparatus according to claim 4, characterized in that: the driving arm comprises a first connecting rod, a driven arm, a second connecting rod and a driving arm, one end of the first connecting rod is connected with the driving portion, the other end of the first connecting rod is hinged to one end of the driven arm, the other end of the driven arm is hinged to one end of the second connecting rod, and the other end of the second connecting rod is connected with the driving arm in a clamped mode.

7. A clutch comprising a housing, characterized in that: the power switching device according to any one of claims 1 to 5 is provided in the housing.

8. The clutch of claim 7, wherein: and a bearing is also arranged between the shell and the rotating disc.

9. A clutch comprising a housing, characterized in that: the power switching device of claim 6 is disposed within the housing.

10. The clutch of claim 9, wherein: and a bearing is also arranged between the shell and the rotating disc.

11. The clutch of claim 10, wherein: the casing is provided with a mounting hole, one end of the second connecting rod is hinged to the mounting hole, and a torsion spring is arranged at one end of the second connecting rod hinged to the mounting hole.