A PTO clutch with dual clutch two-position action combination function

Abstract

The present invention relates to a PTO clutch with a dual-clutch two-position action combination function, comprising a clutch housing gear assembly, a support shaft, a dual-clutch two-position action combination piston, and a brake clutch housing. A clutch seat, a base, and a brake clutch seat are fixed to the support shaft in sequence. The clutch housing gear assembly is loosely mounted on one end of the support shaft and engages or disengages with the clutch seat via a clutch friction plate group. The brake clutch housing is rotatably mounted on the other end of the support shaft via a bearing and engages or disengages with the brake clutch seat via a brake clutch friction plate group. The dual-clutch two-position action combination piston is slidably mounted on the support shaft, with its ends located on either side of the base. Through hydraulic control, the dual-clutch two-position action combination piston is brought into contact with the clutch friction plate group or the brake clutch friction plate group. The present invention automatically switches the PTO clutch to a brake-locked shaft operating state when disengaged, increasing functionality and ensuring a compact and reliable structure.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial power transmission devices such as ships, vehicles, and metallurgy, and in particular to a PTO clutch with a dual-clutch two-position action combination function. Background Art

[0002] In industrial power transmission systems such as ships, vehicles, and metallurgy, clutches are often used to control the transmission and disconnection of power. Hydraulic clutches are widely used due to their high power transmission, convenient and reliable control. However, when the hydraulic clutch is disconnected, residual torque will be left due to the hydraulic effect, which prevents the power from being completely disconnected, affecting the performance and safety of the product. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a PTO clutch with a dual-clutch two-position action combination function, which has a compact structure, self-locking when connected and disengaged, and safe, reliable and stable operation.

[0004] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0005] A PTO clutch with a dual-clutch two-position action combination function comprises a clutch housing gear assembly, a support shaft, a dual-clutch two-position action combination piston and a brake clutch housing, wherein a clutch seat, a base and a brake clutch seat are fixed in sequence on the support shaft, the clutch housing gear assembly is loosely sleeved on one end of the support shaft, and is engaged with or separated from the clutch seat through a clutch friction plate group; the brake clutch housing is rotatably arranged at the other end of the support shaft through a bearing, and is engaged with or separated from the brake clutch seat through a brake clutch friction plate group; the dual-clutch two-position action combination piston is slidably arranged on the support shaft, and its two ends are respectively located on both sides of the base, and the dual-clutch two-position action combination piston is hydraulically controlled to make it counteract the clutch friction plate group or the brake clutch friction plate group.

[0006] As a preferred solution: an outer piston ring is embedded on the outer side wall of the base, and the outer piston ring abuts against the inner wall of the dual-clutch two-position action combination piston.

[0007] As a preferred solution: the dual-clutch two-position action combination piston is an annular body with a C-shaped cross-section, and one end of the annular body is the main clutch piston head, and the other end is the brake clutch piston head, and the C-shaped groove of the annular body is engaged with the outside of the base.

[0008] As a preferred solution: a working oil chamber is formed between the main clutch piston head and the base, a brake oil chamber is formed between the brake clutch piston head and the base, and a working oil circuit and a brake oil circuit are respectively opened on the support shaft and are connected to the above two oil chambers.

[0009] As a preferred solution: an inner piston ring A is embedded in the inner wall of the main clutch piston head, and the inner piston ring A is against the outer wall of the support shaft; an inner piston ring B is embedded in the inner wall of the brake clutch piston head, and the inner piston ring B is against the outer wall of the support shaft.

[0010] As a preferred solution: the dual-clutch two-position action combination piston is integrally formed, or the main clutch piston head and the brake clutch piston head are fixedly connected by a fixing pin.

[0011] As a preferred solution: a spring is further provided between the brake clutch piston head and the base.

[0012] As a preferred solution: the dual-clutch two-position action combination piston is integrally formed, or the main clutch piston head and the brake clutch piston head are limited by a retaining ring.

[0013] As a preferred solution: the retaining ring is embedded in the inner wall of the main clutch piston head, and a groove or notch is provided on the outer wall of the brake clutch piston head. Under the action of the spring, the brake clutch piston head makes the groove or notch abut against the part of the retaining ring exposed on the inner wall of the main clutch piston head.

[0014] As a preferred solution: an inner piston ring A is embedded in the inner wall of the main clutch piston head, and the inner piston ring A abuts against the outer wall of the support shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention utilizes a dual-clutch, two-position combined piston, and through hydraulic control, it counteracts the clutch friction plate group or brake clutch friction plate group, ensuring timely stoppage of the support shaft and rapid power shutoff. The invention automatically switches the PTO clutch to a brake-locked shaft mode when disengaged, increasing functionality and providing a compact and reliable structure. This solves the problem of the driven part continuing to rotate when the clutch is disengaged, improving equipment performance and safety, and has broad application value in power transmission system engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation on this application.

[0018] Figure 1 Schematic diagram of the cross-sectional structure of Example 1 of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the second practical embodiment.

[0020] The marks in the accompanying drawings are: 1. Clutch housing gear assembly; 2. Support shaft; 3. Clutch friction plate group; 4. Clutch seat; 5. Dual-clutch two-position action combination piston; 6. Brake clutch housing; 7. Brake clutch friction plate group; 8. Brake clutch seat; 511. Main clutch piston head; 21. Working oil circuit; 22. Brake oil circuit; 512. Brake clutch piston head; 52. Base; 53. Spring; 54. Outer piston ring; 56. Inner piston ring A; 57. Fixing pin; 58. Inner piston ring B; 55. Retaining ring. DETAILED DESCRIPTION

[0021] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise explicitly specified.

[0025] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0028] like Figure 1 As shown, a PTO clutch with a dual-clutch two-position action combination function includes a clutch housing gear assembly 1, a support shaft 2, a dual-clutch two-position action combination piston 5 and a brake clutch housing 6. The support shaft 2 is fixed with a clutch seat 4, a base 52 and a brake clutch seat 8 in sequence. The clutch housing gear assembly 1 is loosely sleeved on one end of the support shaft 2 and is engaged with or separated from the clutch seat 4 through the clutch friction plate group 3; the brake clutch housing 6 is rotatably set at the other end of the support shaft 2 through a bearing, and is engaged with or separated from the brake clutch seat 8 through the brake clutch friction plate group 7; the dual-clutch two-position action combination piston 5 is slidably set on the support shaft 2, and its two ends are respectively located on both sides of the base 52. The dual-clutch two-position action combination piston 5 is hydraulically controlled to abut against the clutch friction plate group 3 or the brake clutch friction plate group 7.

[0029] The dual-clutch two-position action combination piston 5 is an annular body with a roughly C-shaped cross-section, and one end of the annular body is a main clutch piston head 511, and the other end is a brake clutch piston head 512. The C-shaped groove of the annular body is engaged with the outer side of the base 52.

[0030] A working oil chamber is formed between the main clutch piston head 511 and the base 52, and a brake oil chamber is formed between the brake clutch piston head 512 and the base 52. The support shaft 2 is also provided with a working oil circuit 21 and a brake oil circuit 22 which are respectively connected to the above two oil chambers.

[0031] When the main clutch is engaged, the hydraulic control system injects hydraulic oil into the working oil chamber, causing the dual-clutch two-position action combination piston 5 to move to the left as a whole, and the main clutch piston head 511 presses the clutch friction plate group 3 to engage. At the same time, the brake clutch friction plate group is released, and the brake clutch is in a "disengaged" state; when the main clutch is controlled to be disengaged, the hydraulic control system injects hydraulic oil into the brake oil chamber, causing the dual-clutch two-position action combination piston 5 to move to the right as a whole, and the brake clutch piston head 512 presses the brake clutch friction plate group 7, so that the output PTO shaft is in a stationary state, realizing the "two-position action combination" function of the main clutch and the brake clutch alternately "engaging" and "disengaging", and realizing the mechanical "engaging" and "disengaging" interlocking of the dual clutch group.

[0032] An outer piston ring 54 is embedded in the outer wall of the base 52, abutting the inner wall of the dual-clutch two-position combination piston 5. An inner piston ring A56 is embedded in the inner wall of the main clutch piston head 511, abutting the outer wall of the support shaft 2. An inner piston ring B58 is embedded in the inner wall of the brake clutch piston head 512, abutting the outer wall of the support shaft 2. The arrangement of these outer piston rings 54, A56, and B58 improves the sealing performance of the working and brake oil chambers, further stabilizing the hydraulic control system.

[0033] The dual-clutch two-position action combination piston 5 is integrally formed, or the main clutch piston head 511 and the brake clutch piston head 512 are fixedly connected via a fixing pin 57 . Example 2

[0034] Most of the structures in this embodiment are the same as those in embodiment 1, with only slight differences in the dual-clutch two-position action combination piston structure, operation mode and base structure. The specific differences are as follows: Figure 2As shown, a PTO clutch with a dual-clutch two-position action combination function includes a clutch housing gear assembly 1, a support shaft 2, a dual-clutch two-position action combination piston 5 and a brake clutch housing 6. The support shaft 2 is fixed with a clutch seat 4, a base 52 and a brake clutch seat 8 in sequence. The clutch housing gear assembly 1 is loosely sleeved on one end of the support shaft 2 and is engaged with or separated from the clutch seat 4 through the clutch friction plate group 3; the brake clutch housing 6 is rotatably set at the other end of the support shaft 2 through a bearing, and is engaged with or separated from the brake clutch seat 8 through the brake clutch friction plate group 7; the dual-clutch two-position action combination piston 5 is slidably set on the support shaft 2, and its two ends are respectively located on both sides of the base 52. The dual-clutch two-position action combination piston 5 is hydraulically controlled to abut against the clutch friction plate group 3 or the brake clutch friction plate group 7.

[0035] The dual-clutch two-position combined piston 5 is an annular body with a roughly C-shaped cross-section. One end of the annular body is a main clutch piston head 511, and the other end is a brake clutch piston head 512. The C-shaped groove of the annular body is engaged with the outside of the base 52. A spring 53 is also provided between the brake clutch piston head 512 and the base 52.

[0036] The dual-clutch two-position combined piston 5 is integrally formed, or the main clutch piston head 511 and the brake clutch piston head 512 are limited by a retaining ring 55. The retaining ring 55 is embedded in the inner wall of the main clutch piston head 511. The outer wall of the brake clutch piston head 512 is provided with a groove or notch. Under the action of the spring 53, the brake clutch piston head 512 is pressed against the groove or notch and the portion of the retaining ring 55 exposed from the inner wall of the main clutch piston head 511. The use of the retaining ring to secure the main clutch piston head 511 and the brake clutch piston head 512 results in a simple and stable structure, easy assembly and disassembly, and convenient subsequent maintenance.

[0037] When the main clutch is engaged, the hydraulic control system injects hydraulic oil into the working oil chamber, causing the dual-clutch two-position action combination piston 5 to move to the left as a whole, and the main clutch piston head 511 presses the clutch friction plate group 3 to engage. At the same time, the brake clutch friction plate group is released and the brake clutch is in a "disengaged" state; when the main clutch is controlled to disengage, the force of the spring 53 between the base and the brake clutch piston head 512 automatically presses the brake clutch friction plate group 7, so that the output PTO shaft is in a stationary state. The clamping force of the brake clutch friction plate group 7 comes from the spring force, and there is no need to provide working oil separately, which simplifies the hydraulic system and achieves the purpose of energy saving and emission reduction.

[0038] The above structure realizes the "two-position action combination" function of alternating "engagement" and "disengagement" of the main clutch and the brake clutch, realizes the mechanical "engagement" and "disengagement" interlocking of the dual-clutch group, and meets the operating conditions requirements of the mechanical engineering power system.

[0039] An inner piston ring A56 is embedded in the inner wall of the main clutch piston head 511, and the inner piston ring A56 abuts against the outer wall of the support shaft 2. The arrangement of the outer piston ring 54 can improve the sealing performance of the working oil chamber, making the hydraulic control system more stable.

[0040] In summary, the two embodiments of this application, to achieve complete functionality, compact structure, small size, and light weight, design the dual-clutch two-position combined piston 5 into a combined mechanism that simultaneously drives both the main clutch and the brake clutch. The dual-clutch two-position combined piston 5 is connected in series between the main clutch and the brake clutch, with the piston head and tension plate integrally formed. Under the control of the control unit, the main clutch and the brake clutch are alternately engaged and disengaged, achieving mechanical interlocking.

[0041] The dual-clutch two-position action combination piston 5 can be formed as one piece or adopt an assembly structure such as a retaining ring and a fixing pin, and one end is the main clutch piston head 511, and the other end is the brake clutch piston head 512. When the main clutch is disengaged, the brake clutch piston head 512 works to press the brake clutch friction plate, and at the same time acts as a tension plate to pull the main clutch piston head 511 to the right; when the main clutch is engaged, the main clutch piston head 511 works to press the main clutch friction plate 3, and at the same time acts as a tension plate to pull the brake clutch piston head 512 to the left; a single part has multiple functions, achieving the design goal of integrated part functions.

[0042] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A PTO clutch with dual clutch two-position action combination function, characterized by: The invention comprises a clutch housing gear assembly (1), a support shaft (2), a dual-clutch two-position action combination piston (5) and a brake clutch housing (6); a clutch seat (4), a base (52) and a brake clutch seat (8) are fixed on the support shaft (2) in sequence; the clutch housing gear assembly (1) is loosely sleeved on one end of the support shaft (2) and is engaged with or separated from the clutch seat (4) through a clutch friction plate group (3); the brake clutch housing (6) is rotatably arranged on the other end of the support shaft (2) through a bearing and is engaged with or separated from the brake clutch seat (8) through a brake clutch friction plate group (7); the dual-clutch two-position action combination piston (5) is slidably arranged on the support shaft (2), and its two ends are respectively located on both sides of the base (52); the dual-clutch two-position action combination piston (5) is hydraulically controlled to make the dual-clutch two-position action combination piston (5) abut against the clutch friction plate group (3) or the brake clutch friction plate group (7); The dual-clutch two-position action combination piston (5) is an annular body with a C-shaped cross section, and one end of the annular body is a main clutch piston head (511), and the other end is a brake clutch piston head (512), and the C-shaped groove of the annular body is engaged with the outer side of the base (52); A working oil chamber is formed between the main clutch piston head (511) and the base (52), and a brake oil chamber is formed between the brake clutch piston head (512) and the base (52). The support shaft (2) is also provided with a working oil circuit (21) and a brake oil circuit (22) respectively connected to the two oil chambers. An inner piston ring A (56) is embedded in the inner wall of the main clutch piston head (511), and the inner piston ring A (56) abuts against the outer wall of the support shaft (2); an inner piston ring B (58) is embedded in the inner wall of the brake clutch piston head (512), and the inner piston ring B (58) abuts against the outer wall of the support shaft (2).

2. A PTO clutch with dual-clutch two-position action combination function according to claim 1, characterized in that: An outer piston ring (54) is embedded on the outer side wall of the base (52), and the outer piston ring (54) abuts against the inner wall of the dual-clutch two-position action combination piston (5).

3. A PTO clutch with dual-clutch two-position action combination function according to claim 1, characterized in that: The dual-clutch two-position action combination piston (5) is integrally formed, or the main clutch piston head (511) and the brake clutch piston head (512) are fixedly connected via a fixing pin (57).

4. A PTO clutch with dual-clutch two-position action combination function according to claim 1, characterized in that: A spring (53) is further provided between the brake clutch piston head (512) and the base (52).

5. A PTO clutch with dual-clutch two-position action combination function according to claim 4, characterized in that: The dual-clutch two-position action combination piston (5) is integrally formed, or the main clutch piston head (511) and the brake clutch piston head (512) are limited by a retaining ring (55).

6. A PTO clutch with dual-clutch two-position action combination function according to claim 5, characterized in that: The retaining ring (55) is embedded in the inner wall of the main clutch piston head (511), and a groove or notch is provided on the outer wall of the brake clutch piston head (512). Under the action of the spring (53), the brake clutch piston head (512) causes the groove or notch to abut against the portion of the retaining ring (55) exposed from the inner wall of the main clutch piston head (511).

7. A PTO clutch with dual-clutch two-position action combination function according to claim 4, characterized in that: An inner piston ring A (56) is embedded in the inner wall of the main clutch piston head (511), and the inner piston ring A (56) abuts against the outer wall of the support shaft (2).

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