CN114738395A - Clutch for vertical shaft mini-tiller - Google Patents

Clutch for vertical shaft mini-tiller Download PDF

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Publication number
CN114738395A
CN114738395A CN202210394744.0A CN202210394744A CN114738395A CN 114738395 A CN114738395 A CN 114738395A CN 202210394744 A CN202210394744 A CN 202210394744A CN 114738395 A CN114738395 A CN 114738395A
Authority
CN
China
Prior art keywords
friction
clutch
disc
input shaft
mini
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210394744.0A
Other languages
Chinese (zh)
Inventor
艾利
张恒金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Wugu General Equipment Co ltd
Original Assignee
Chongqing Wugu General Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Wugu General Equipment Co ltd filed Critical Chongqing Wugu General Equipment Co ltd
Priority to CN202210394744.0A priority Critical patent/CN114738395A/en
Publication of CN114738395A publication Critical patent/CN114738395A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/385—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs double clutches, i.e. comprising two friction disc mounted on one driven shaft
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B71/00—Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F16D2023/141—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings characterised by using a fork; Details of forks

Abstract

The invention relates to the technical field of clutches, in particular to a clutch for a vertical shaft mini-tiller, wherein one end of the clutch is connected with an input shaft of power, the other end of the clutch is connected with an output shaft, the clutch comprises a friction mechanism and an intermediate disc, the friction mechanism and the intermediate disc are sleeved outside the input shaft and the output shaft, a first boss is arranged on the input shaft, and the first boss is positioned at the upper part of the friction mechanism; the middle disc is connected with the input shaft through a spline, the friction mechanism is connected with a shifting fork mechanism, and the shifting fork mechanism is used for driving the friction mechanism to move up and down, so that the clutch is locked and separated. The clutch disclosed by the invention acts on the input shaft, and when the clutch is used for clutching, a friction mechanism of the clutch is directly acted on the input shaft, and torque transmission can be realized without locking the gear ring.

Description

Clutch for vertical shaft mini-tiller
Technical Field
The invention relates to the technical field of clutches, in particular to a clutch for a vertical shaft mini-tiller.
Background
The clutch is an indispensable braking component in the agricultural machinery industry. The clutch is controlled to realize the output and stop of the whole machine.
At present, in the agricultural machinery industry, particularly in the application of a vertical shaft mini-tiller, a planetary gear structure is generally adopted in the market for speed reduction operation, an input shaft in the planetary gear structure is a sun gear, a planetary gear is arranged outside the sun gear and is provided with a gear ring, and the gear ring is fixed and variable during use, so that the planetary gear can rotate to output torque. At present, the braking of the mini-tiller is generally carried out by adopting a mode of locking a planetary gear ring. When the clutch locks the gear ring, the transmission of the planet gear ring is large, so that the torque on the gear ring is large, the gear is not well locked, the gear ring slips, the torque output by a cutter of the mini-tiller connected with the planet gear is reduced, and the tillage is difficult.
Disclosure of Invention
The invention provides a clutch for a vertical shaft mini-tiller, aiming at the problems that a large torque gear ring of a gear ring cannot be completely locked when the clutch is used for clutching due to braking of the gear ring, and the gear ring is easy to slip, so that the torque output by an output shaft is insufficient.
In order to achieve the above object, the present invention provides the following technical solutions:
a clutch for a vertical shaft mini-tiller is characterized in that one end of the clutch is connected with a power input shaft, the other end of the clutch is connected with an output shaft, the clutch comprises a friction mechanism and an intermediate disc, the friction mechanism and the intermediate disc are sleeved outside the input shaft and the output shaft, a first boss is arranged on the input shaft, and the first boss is located at the upper part of the friction mechanism; the middle disc is connected with the input shaft through a spline, the friction mechanism is connected with a shifting fork mechanism, and the shifting fork mechanism is used for driving the friction mechanism to move up and down, so that the clutch is locked and separated.
Preferably, the friction mechanism comprises a first friction disc and a second friction disc, connecting holes are formed in the first friction disc and the second friction disc, the connecting column penetrates through the connecting holes to connect the first friction disc and the second friction disc, and the shifting fork mechanism is connected with the second friction disc. The friction mechanism enables friction force between the first friction disc and the middle disc to be larger when the clutch is locked through the arrangement of the first friction disc and the second friction disc.
Preferably, a second boss is arranged in the first friction disc, a first thrust ball bearing is installed in the second boss, a second thrust ball bearing is arranged on the outer wall of the second friction disc, and the shifting fork mechanism is connected with the second thrust ball bearing. When the clutch is locked, the first thrust ball bearing is contacted with the first boss, and the friction mechanism is limited from continuously moving upwards. The thrust ball bearing can bear great axial force, the second thrust ball bearing mainly uses the shift fork to promote and can produce great axial force, and first thrust ball bearing bears the axial force equally, can alleviate the impact force to the input shaft like this.
Preferably, the intermediate plate includes a friction portion and a connecting portion, the connecting portion and the friction portion are L-shaped, and the connecting portion is located on an inner wall of the first friction plate. The top of connecting portion contacts with first thrust ball bearing, can promote first thrust ball bearing upward movement.
Preferably, a return spring is sleeved on the connecting column and is located between the first friction disc and the second friction disc. The return spring is compressed after the clutch is locked, and when the clutch is separated, the second friction disc moves downwards under the action of self gravity and the elastic force of the return spring, so that the friction mechanism is separated from the middle disc quickly.
Preferably, the input shaft is provided with a first clamp spring, and the first clamp spring is located on the lower portion of the middle plate. When the clutch is in a separation state, the intermediate disc can freely fall down on the input shaft due to the gravity, and the first clamp spring on the input shaft positions the intermediate disc and prevents the intermediate disc from continuously falling down. When the clutch is locked, the first clamp spring and the second clamp spring do not play a positioning role.
Preferably, the bottom of the friction mechanism is provided with a second snap spring, and the friction mechanism is limited through the second snap spring.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the clutch is arranged outside the input shaft, the first boss is arranged on the input shaft, the middle part of the friction mechanism is provided with the intermediate disc connected with the driving shaft, the shifting fork enables the friction mechanism to move upwards to reach the first boss, the friction mechanism is attached to the intermediate disc through friction force, the output shaft is connected with the friction mechanism, and therefore the output shaft outputs torque; when the clutch is disengaged, the friction mechanism moves downward under the action of gravity, the intermediate disc still rotates together with the input shaft, but the friction mechanism is disengaged from the intermediate disc, and the output shaft informs torque output. The clutch disclosed by the invention acts on the input shaft, and when the clutch is used for clutching, a friction mechanism of the clutch is directly acted on the input shaft, and torque transmission can be realized without locking the gear ring.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a clutch for a vertical shaft mini-tiller provided by the invention;
FIG. 2 is a schematic structural view of a portion of FIG. 1;
FIG. 3 is a schematic illustration of a first friction disk configuration;
fig. 4 is a schematic structural view of the intermediate tray.
The labels in the figure are: 1-an input shaft, 2-a first friction disc, 3-a hexagon nut, 4-a connecting column, 5-a return spring, 6-a second friction disc, 7-a second thrust ball bearing, 8-an output shaft, 9-a second snap spring, 10-a first snap spring, 11-an intermediate disc, 12-a first thrust ball bearing, 13-a first boss, 14-a shifting fork mechanism, 15-a second boss, 16-a friction part and 17-a connecting part.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
As shown in figure 1, the invention discloses a clutch for a vertical shaft mini-tiller, wherein one end of the clutch is connected with a power input shaft 1, and the other end of the clutch is connected with an output shaft 8.
The clutch comprises a friction mechanism and an intermediate disc 11, the friction mechanism and the intermediate disc 11 are sleeved outside the input shaft 1 and the output shaft 8, and the intermediate disc 11 is connected with the input shaft 1 through a spline. The upper surface and the lower surface of the middle disc are both provided with friction materials matched with the friction mechanism. The input shaft is provided with a first clamp spring 10, the first clamp spring 10 is located on the lower portion of the middle disc 11, the middle disc surface 11 is located through the first clamp spring 10, and the middle disc 11 is prevented from being separated from the input shaft 1.
The input shaft 1 is provided with a first boss 13, and the first boss 13 is positioned at the upper part of the friction mechanism. And the friction mechanism is connected with a shifting fork 14 mechanism, and the shifting fork 14 mechanism is used for driving the friction mechanism to move up and down, so that the clutch is locked and separated. The first boss 13 is used for limiting the friction mechanism upwards, the friction mechanism stops moving after moving to be in contact with the first boss 13, the first boss 13 applies downward force to the friction mechanism, and the shifting fork 14 applies upward force to the friction mechanism, so that the friction mechanism and the intermediate disc 11 are in friction contact and rotate.
The friction mechanism comprises a first friction disc 2 and a second friction disc 6, connecting holes are formed in the first friction disc 2 and the second friction disc 6, the connecting column 4 penetrates through the connecting holes to connect the first friction disc 2 and the second friction disc 6, the upper portion of the connecting column 4 is locked through a hexagonal nut 3, and the second friction disc 6 is connected with an output shaft 8 through a spline. The second friction disk 6, when moving upwards, carries the intermediate disk 11 upwards, which in turn carries the first friction disk 2 upwards. The connecting column 4 is sleeved with a return spring 5, the return spring 5 is located between the first friction disc 2 and the second friction disc 6, and the return spring 5 enables the first friction disc 2 and the second friction disc 6 to be quickly reset to be separated from the middle disc 11 when the clutch is separated.
The friction plate is characterized in that a second boss 15 is arranged in the first friction plate 2, a first thrust ball bearing 12 is mounted in the second boss 15, the cross section of the second friction plate 6 is L-shaped, a second thrust ball bearing 7 is arranged on the outer wall of the second friction plate 6, and the shifting fork 14 mechanism is connected with the second thrust ball bearing 7. When the clutch is locked, the lower section of the first thrust ball bearing 12 and the lower section of the second thrust ball bearing 7 are not rotated. The bottom of friction mechanism is equipped with second jump ring 9, can carry out spacingly to the downstream of friction mechanism through second jump ring 9.
The intermediate plate 11 comprises a friction portion 16 and a connecting portion 17, the connecting portion 17 and the friction portion 16 are L-shaped, and the connecting portion 17 is located on the inner wall of the first friction plate 2. The inside of the connecting portion 17 is connected to the input shaft 1 by a spline, the top of the connecting portion 17 contacts the first thrust ball bearing 12, and the connecting portion 17 pushes the first thrust ball bearing 12 upward to contact the first boss 13 when the clutch is locked.
The working process comprises the following steps: when the clutch needs to be locked for use, the second thrust ball bearing 7 moves upwards through the shifting fork 14 mechanism, the second thrust ball bearing 7 drives the second friction disc 6 to move upwards, the second friction disc 6 drives the middle disc 11 to move upwards, the middle disc 11 drives the first friction disc 2 to move upwards, the first thrust ball bearing 12 is contacted with the first boss 13 of the input shaft 1 after the first friction disc 2 and the middle disc 11 move upwards, the first boss 13 limits the friction mechanism to continue moving upwards, the first friction disc 2 and the second friction disc 6 are in friction contact with the middle disc 11, the middle disc 11 drives the first friction disc 2 and the second friction disc 6 to rotate, and the output shaft 8 is connected with the second friction disc 6 through the spline, so that the output shaft 8 is driven to rotate to realize torque output. The second friction disk 6 moves upwards on the output shaft 8, and after the second friction disk 6 is locked with the middle disk 11, the middle disk 11 drives the first friction disk 2 and the second friction disk 6 to rotate together.
When the clutch is separated, the shifting fork 14 is released, the second thrust ball bearing 7 is reset under the action of gravity, the second friction disc 6 is also reset under the action of self gravity and the return spring 5, the first friction disc 2 and the second friction disc 6 are separated from the intermediate disc 11 by the second return spring 5, at the moment, the intermediate disc 11 still rotates along with the rotation of the input shaft 1, but the second friction disc 6 does not rotate along with the intermediate disc 11 any more, and the output shaft 8 also stops outputting.
The invention directly brakes the input shaft 1 and the output shaft 8 to output torque, and compared with the existing mode of locking the gear ring to enable the output shaft to output torque, the invention avoids the problem that the clutch cannot brake the gear ring to lock the gear ring in time to cause the output shaft to slip with small torque due to large torque of the gear ring. After the clutch is separated, the second friction disc 6 and the middle disc 11 are separated, and the output shaft 8 cannot be driven to rotate. Compared with the traditional structure, the structure can greatly reduce the load of the clutch, reduce the size of the clutch, and has the characteristics of simple processing and manufacturing, low cost, and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The clutch for the vertical shaft mini-tiller is characterized in that one end of the clutch is connected with a power input shaft (1), the other end of the clutch is connected with an output shaft (8), the clutch comprises a friction mechanism and an intermediate disc (11), the friction mechanism and the intermediate disc (11) are sleeved outside the input shaft (1) and the output shaft (8), a first boss (13) is arranged on the input shaft (1), and the first boss (13) is located at the upper part of the friction mechanism; the middle disc (11) is connected with the input shaft (1) through a spline, a shifting fork (14) mechanism is connected onto the friction mechanism, and the shifting fork (14) mechanism is used for driving the friction mechanism to move up and down, so that the clutch is locked and separated.
2. The clutch for the vertical shaft mini-tiller according to claim 1, wherein the friction mechanism comprises a first friction disc (2) and a second friction disc (6), connecting holes are formed in the first friction disc (2) and the second friction disc (6), the connecting rod (4) penetrates through the connecting holes to connect the first friction disc (2) and the second friction disc (6), and the shifting fork (14) mechanism is connected with the second friction disc (6).
3. The clutch for the vertical shaft mini-tiller according to claim 2, characterized in that a second boss (15) is arranged in the first friction disc (2), a first thrust ball bearing (12) is arranged in the second boss (15), a second thrust ball bearing (7) is arranged on the outer wall of the second friction disc (6), and the shifting fork (14) mechanism is connected with the second thrust ball bearing (7).
4. The clutch for a vertical axis mini-tiller according to claim 2, characterized in that the intermediate plate (11) comprises a friction portion (16) and a connecting portion (17), the connecting portion (17) and the friction portion (16) are L-shaped, and the connecting portion (17) is located on the inner wall of the first friction disc (2).
5. The clutch for the vertical shaft mini-tiller according to claim 2, characterized in that a return spring (5) is sleeved on the connecting column (4), and the return spring (5) is located between the first friction disk (2) and the second friction disk (6).
6. The clutch for the vertical shaft mini-tiller according to claim 1, wherein a first clamp spring (10) is arranged on the input shaft, and the first clamp spring (10) is located at the lower part of the middle plate (11).
7. The clutch for the vertical shaft mini-tiller according to claim 1, wherein a second clamp spring (9) is arranged at the bottom of the friction mechanism.
CN202210394744.0A 2022-04-14 2022-04-14 Clutch for vertical shaft mini-tiller Pending CN114738395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210394744.0A CN114738395A (en) 2022-04-14 2022-04-14 Clutch for vertical shaft mini-tiller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210394744.0A CN114738395A (en) 2022-04-14 2022-04-14 Clutch for vertical shaft mini-tiller

Publications (1)

Publication Number Publication Date
CN114738395A true CN114738395A (en) 2022-07-12

Family

ID=82280667

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210394744.0A Pending CN114738395A (en) 2022-04-14 2022-04-14 Clutch for vertical shaft mini-tiller

Country Status (1)

Country Link
CN (1) CN114738395A (en)

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