Novel clutch structure

Abstract

The utility model provides a novel clutch structure and belongs to the technical field of clutches. The problems that an existing clutch structure is complex in structure and poor in transmission effect are solved. The novel clutch structure comprises a driving disc connected with a power output shaft and a driving disc installed on a gearbox driving shaft, the gearbox driving shaft and the power output shaft are coaxially arranged, the driving disc and the driving disc are coaxially arranged, and the side, facing the driving disc, of the driving disc is provided with a first friction face. The side, facing the driving disc, of the driving disc is provided with a second friction face, when the second friction face is tightly attached to the first friction face, power of the power output shaft is transmitted to the gearbox driving shaft through the driving disc and the driving disc, and a compressed spring used for enabling the second friction face to be disengaged from the first friction face in time is arranged between the driving disc and the driving disc. The first friction surface and the second friction surface are in surface contact, when the driving disc moves axially, rapid contact and timely separation of the first friction surface and the second friction surface can be achieved, the overall structure is simple, and the using effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of clutches and relates to a novel clutch structure. Background Art

[0002] With the development of science and technology, the degree of agricultural mechanization and automation has been greatly improved. As a result, a large number of agricultural machinery have appeared. Among them, micro-tillage machines are the most widely used machinery in agriculture. Micro-tillage machines are widely used in plains, mountainous areas, hilly dry land, paddy fields, orchards and other areas. They solve the problem that large agricultural machinery cannot enter mountain fields for farming. They are the best choice for consumers to replace ox-plowing.

[0003] The existing micro-tillage machines mainly control gear shifting and speed change through clutches. For example, a multi-plate clutch [authorization announcement number CN211924823U] disclosed in a Chinese patent includes a clutch active end and a clutch driven end. The clutch active end and the clutch driven end adopt a clutch connection setting that matches each other, and a first cylindrical gear is integrally fixedly connected to the clutch active end. An axially extending slot is provided on the active end, and a radially protruding protrusion is provided on the driven end. When working, the driven end extends into the active end and the protrusion is limited in the slot. When the active end rotates, it drives the driven end to rotate.

[0004] The above clutch has the following problems: complex structure, high manufacturing cost, the driven end is not easy to engage with the driving end, the driven end and the driving end cannot be separated in time and effectively after engagement, the connection accuracy is low, which leads to inconvenient gear shifting operation and short service life. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the prior art and to provide a new clutch structure with good use effect.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A novel clutch structure comprises an active disc connected to a power output shaft and a driving disc mounted on a gearbox active shaft, wherein the gearbox active shaft is coaxially arranged with the power output shaft, the driving disc is coaxially arranged with the active disc, the active disc has a first friction surface on the side facing the driving disc, and the driving disc has a second friction surface on the side facing the active disc, when the second friction surface is in close contact with the first friction surface, the power of the power output shaft is transmitted to the gearbox active shaft through the active disc and the driving disc, and a compression spring is arranged between the active disc and the driving disc for making the second friction surface separate from the first friction surface in time.

[0008] The first friction surface and the second friction surface are in surface contact, and the contact surface is perpendicular to the movement direction of the driving disk. When the driving disk moves axially, the first friction surface and the second friction surface can be quickly contacted and separated in time, and the power transmission effect is good. In addition, the overall structure is simple, the design is reasonable, and the use effect is good.

[0009] In the above-mentioned novel clutch structure, a plurality of friction plates distributed in an annular array along the center line of the driving disk are provided on the side of the driving disk facing the active disk, the length direction of the friction plates extends along the radial direction of the driving disk, and the side of the plurality of friction plates facing the active disk constitutes the above-mentioned second friction surface. By providing the friction plates, the friction between the driving disk and the active disk is increased, the connection accuracy is improved, and thus the power transmission effect is improved.

[0010] In the above-mentioned novel clutch structure, the first friction surface is provided with a plurality of friction patterns and / or pits for increasing friction.

[0011] A plurality of pits are evenly arranged and distributed in a ring array along the center line of the active disk. The purpose of arranging the friction pattern and / or the pits is to increase the friction between the active disk and the driving disk.

[0012] In the above-mentioned novel clutch structure, the gearbox driving shaft is rotatably mounted in the gearbox body through the first bearing, one end of the power output shaft extends into the gearbox body, and the gearbox body is provided with a shift fork for driving the driving disc axially close to the driving disc.

[0013] In the above-mentioned novel clutch structure, a thrust bearing is coaxially provided on the driving plate, and the shift fork acts on a side of the thrust bearing away from the driving plate.

[0014] In the above-mentioned novel clutch structure, a first positioning step is coaxially provided in the driving plate, a second bearing is installed in the first positioning step, and the end of the gearbox driving shaft close to the driving plate is supported in the second bearing. The gearbox driving shaft is supported by the first bearing and the second bearing together, thereby improving the stability of the gearbox driving shaft.

[0015] In the above novel clutch structure, a third bearing is provided between the driving disc and the gearbox body to ensure the coaxiality of the driving disc and improve the stability of the driving disc.

[0016] In the above-mentioned novel clutch structure, a second positioning step is coaxially provided in the driving plate, one end of the compression spring abuts against the second positioning step, and the other end of the compression spring abuts against the inner ring of the second bearing. The second positioning step provides a clearance space for the compression spring, and when the second friction surface is in close contact with the first friction surface, the compression spring is located in the second positioning step.

[0017] Compared with the prior art, the new clutch structure has the following advantages:

[0018] The first friction surface and the second friction surface are in surface contact. When the driving disc moves axially, the first friction surface and the second friction surface can be quickly contacted and separated in time. A friction plate is arranged on the driving disc, and friction patterns and / or pits are arranged on the active disc to increase the friction between the driving disc and the active disc and improve the power transmission effect. The overall structure is simple, the design is reasonable, the use effect is good, and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the entire structure of the novel clutch.

[0020] Figure 2 It is a cross-sectional view of some components of the novel clutch structure.

[0021] In the figure, 1, power output shaft; 2, driving plate; 3, gearbox driving shaft; 4, driving plate; 5, compression spring; 6, friction plate; 7, first bearing; 8, gearbox body; 9, shift fork; 10, thrust bearing; 11, first positioning step; 12, second bearing; 13, third bearing; 14, second positioning step. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 The new clutch structure shown is arranged in a gearbox body 8, and includes a gearbox driving shaft 3 rotatably arranged in the gearbox body 8, a power output shaft 1 with one end extending into the gearbox body 8, a driving plate 2 splined to the power output shaft 1, and a drive plate 4 splined to the gearbox driving shaft 3. The gearbox driving shaft 3 is coaxially arranged with the power output shaft 1, and the drive plate 4 is coaxially arranged with the driving plate 2. The drive plate 4 can move axially along the driving shaft.

[0024] like Figure 1 As shown, a shift fork 9 is provided on the gearbox body 8, and a thrust bearing 10 is coaxially provided on the driving disc 4. The shift fork 9 acts on the side of the thrust bearing 10 away from the active disc 2. Under the action of the shift fork 9, the driving disc 4 can be close to the active disc 2.

[0025] In order to better support the gearbox driving shaft 3, Figure 1 As shown, the gearbox driving shaft 3 is rotatably mounted in the gearbox body 8 through the first bearing 7, a first positioning step 11 is coaxially provided in the driving disc 2, a second bearing 12 is installed in the first positioning step 11, and one end of the gearbox driving shaft 3 close to the driving disc 2 is supported in the second bearing 12.

[0026] In order to better support the active disk 2, Figure 1 and Figure 2 As shown, a third bearing 13 is provided between the driving plate 2 and the gearbox body 8 .

[0027] In order to make the driving disk 4 and the active disk 2 automatically separate, Figure 1 and Figure 2 As shown, a compression spring 5 is provided between the active disk 2 and the driving disk 4 to enable the second friction surface to be separated from the first friction surface in time. Figure 2 As shown, a second positioning step 14 is coaxially provided inside the driving disk 4, one end of the compression spring 5 abuts against the second positioning step 14, and the other end of the compression spring 5 abuts against the inner ring of the second bearing 12. The second positioning step 14 provides a clearance space for the compression spring 5. When the second friction surface is in close contact with the first friction surface, the compression spring 5 is located in the second positioning step 14.

[0028] like Figure 1 and 2 As shown, the active disc 2 has a first friction surface on the side facing the driving disc 4, and the driving disc 4 has a second friction surface on the side facing the active disc 2. When the second friction surface is in close contact with the first friction surface, the power of the power output shaft 1 is transmitted to the gearbox active shaft 3 through the active disc 2 and the driving disc 4. The first friction surface is in surface contact with the second friction surface, and the contact surface is perpendicular to the movement direction of the driving disc 4. When the driving disc 4 moves axially, the first friction surface and the second friction surface can be quickly contacted and separated in time, and the power transmission effect is good. In addition, the overall structure is simple, the design is reasonable, and the use effect is good.

[0029] like Figure 2 As shown, a plurality of friction plates 6 are arranged in a circular array along the center line of the driving disk 4 on the side of the driving disk 4 facing the active disk 2, and the length direction of the friction plates 6 extends radially along the driving disk 4, and the side of the plurality of friction plates 6 facing the active disk 2 constitutes the second friction surface. By providing the friction plates 6, the friction between the driving disk 4 and the active disk 2 is increased, the connection accuracy is improved, and thus the power transmission effect is improved.

[0030] In this embodiment, a plurality of pits for increasing friction are provided on the first friction surface, and the plurality of pits are evenly arranged and distributed in a ring array along the center line of the active disk 2 .

[0031] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A new clutch structure, characterized in that: The invention comprises a driving disc (2) connected to a power output shaft (1) and a driving disc (4) mounted on a gearbox driving shaft (3); the gearbox driving shaft (3) is coaxially arranged with the power output shaft (1); the driving disc (4) is coaxially arranged with the driving disc (2); the driving disc (2) has a first friction surface on the side facing the driving disc (4); the driving disc (4) has a second friction surface on the side facing the driving disc (2); when the second friction surface is in close contact with the first friction surface, the power of the power output shaft (1) is transmitted to the gearbox driving shaft (3) through the driving disc (2) and the driving disc (4); and a compression spring (5) is provided between the driving disc (2) and the driving disc (4) for timely separating the second friction surface from the first friction surface.

2. The new clutch structure according to claim 1 is characterized in that: A plurality of friction plates (6) are arranged in a circular array along the center line of the driving disk (4) on the side of the driving disk (4) facing the active disk (2); the length direction of the friction plates (6) extends radially along the driving disk (4); and the side of the plurality of friction plates (6) facing the active disk (2) constitutes the above-mentioned second friction surface.

3. The new clutch structure according to claim 2 is characterized in that: The first friction surface is provided with a plurality of friction lines and / or pits for increasing friction.

4. The novel clutch structure according to claim 1 is characterized in that: The gearbox driving shaft (3) is rotatably mounted in a gearbox body (8) via a first bearing (7); one end of the power output shaft (1) extends into the gearbox body (8); and a shift fork (9) is provided on the gearbox body (8) for driving the driving disc (4) to axially approach the driving disc (2).

5. The novel clutch structure according to claim 4 is characterized in that: A thrust bearing (10) is coaxially arranged on the driving disc (4), and the shift fork (9) acts on a side of the thrust bearing (10) away from the active disc (2).

6. The novel clutch structure according to claim 4 is characterized in that: A first positioning step (11) is coaxially arranged in the driving disk (2), a second bearing (12) is installed in the first positioning step (11), and one end of the gearbox driving shaft (3) close to the driving disk (2) is supported in the second bearing (12).

7. The novel clutch structure according to claim 6 is characterized in that: A third bearing (13) is provided between the driving disc (2) and the gearbox body (8).

8. The novel clutch structure according to claim 6 is characterized in that: A second positioning step (14) is coaxially arranged inside the driving disk (4), one end of the compression spring (5) abuts against the second positioning step (14), and the other end of the compression spring (5) abuts against the inner ring of the second bearing (12).

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