CN216045099U

CN216045099U - Drum disk type clutch

Info

Publication number: CN216045099U
Application number: CN202122474454.0U
Authority: CN
Inventors: 张道翔; 舒永东; 常晓雷; 常江; 张磊; 皮志达; 林富华; 许兆林
Original assignee: Nanjing High Accurate Marine Equipment Co Ltd
Current assignee: Nanjing High Accurate Marine Equipment Co Ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-03-15
Anticipated expiration: 2031-10-14

Abstract

The utility model relates to the technical field of clutches, and discloses a drum disc type clutch, which comprises: the transmission shaft, the driving device and the friction assembly; the driving device is arranged on the transmission shaft and comprises a piston assembly and an elastic assembly, the piston assembly comprises a piston capable of moving along the axial direction of the transmission shaft, and the elastic assembly is used for providing resetting force for the piston; the friction assembly comprises an inner cone and a shell, the inner cone is connected to the piston, the friction surface of the inner cone and the friction surface of the shell are both conical surfaces, and the inner cone can be connected with or separated from the shell under the driving of the piston. The drum-disc clutch is high in heat dissipation capacity, a lubricating system does not need to be additionally arranged for heat dissipation, and the manufacturing cost is low.

Description

Drum disk type clutch

Technical Field

The utility model relates to the technical field of clutches, in particular to a drum disc type clutch.

Background

Clutches are common components in mechanical transmissions and allow the transmission to be disengaged or engaged at any time. At present, a multi-plate hydraulic wet clutch has become one of the commonly used clutches. However, the conventional multi-plate hydraulic wet clutch has the disadvantages of more internal parts, complex structure and poor heat dissipation capability, and needs an additionally arranged lubricating system for heat dissipation, so that the cost of the conventional multi-plate hydraulic wet clutch is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a drum-disc clutch which is high in heat dissipation capacity, does not need to be additionally provided with a lubricating system for heat dissipation, and is low in manufacturing cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a drum clutch, comprising:

a drive shaft;

the driving device is arranged on the transmission shaft and comprises a piston assembly and an elastic assembly, the piston assembly comprises a piston capable of moving along the axial direction of the transmission shaft, and the elastic assembly is used for providing a resetting force for the piston;

the friction assembly comprises an inner cone and a shell, the inner cone is connected to the piston, the friction surface of the inner cone and the friction surface of the shell are both conical surfaces, and the inner cone can be connected with or separated from the shell under the driving of the piston.

As a preferred scheme of the drum clutch, the piston assembly includes a piston guide cylinder and two pistons slidably sleeved on the piston guide cylinder, the two pistons are respectively a first piston and a second piston, and the first piston and the second piston can move in opposite directions or back to back along the axial direction of the transmission shaft.

As a preferred scheme of a drum clutch, the elastic component includes a spring and a spring guide rod, the spring guide rod is inserted into the piston guide cylinder, the spring is disposed in the piston guide cylinder and sleeved on the spring guide rod, and the spring is compressed when the first piston and the second piston move away from each other.

As a preferred scheme of the drum-disc clutch, one end of the spring guide rod is connected to the first piston, the other end of the spring guide rod is connected to a spring cover plate, the first end of the spring is limited to the spring cover plate, and the second end of the spring is limited to the piston guide cylinder.

As a preferable scheme of the drum clutch, the elastic component further includes a spring sleeve, a portion of the spring sleeve is disposed in the piston guide cylinder and sleeved on the spring, a portion of the spring sleeve extending out of the piston guide cylinder is connected to the second piston, and a second end of the spring is limited by the spring sleeve.

As a preferred scheme of the drum clutch, the inner wall of the spring sleeve is provided with a limit boss, and two ends of the spring are respectively connected with the spring cover plate and the limit boss.

As a preferable scheme of the drum clutch, a first driving cavity for introducing pressure oil is formed between the first piston and the transmission shaft, and a second driving cavity for introducing pressure oil is formed between the second piston and the transmission shaft.

As a preferable scheme of the drum clutch, an oil through hole is formed in the transmission shaft, and the oil through hole is communicated with the first driving cavity and the second driving cavity.

As a preferable embodiment of the drum clutch, the friction assembly includes a first inner cone, a first housing, a second inner cone, and a second housing, the first inner cone is connected to the first piston, the second inner cone is connected to the second piston, the first inner cone is capable of being engaged with or disengaged from the first housing by the driving of the first piston, and the second inner cone is capable of being engaged with or disengaged from the second housing by the driving of the second piston.

As a preferable scheme of the drum-disc clutch, the friction surfaces of the inner cones are provided with chip grooves which are arranged along the axial direction of the transmission shaft.

The utility model has the beneficial effects that:

the utility model provides a drum clutch, which comprises a transmission shaft, a driving device and a friction assembly, wherein the driving device comprises a piston assembly and an elastic assembly, a piston in the piston assembly can move along the axial direction of the transmission shaft, an inner cone in the friction assembly is connected to the piston, the inner cone can be connected with or separated from a shell under the driving of the piston, the transmission or the cutting-off of the power between the transmission shaft and the shell is realized, in addition, the friction surface of the inner cone and the friction surface of the shell are both conical surfaces, the connection area between the inner cone and the shell is larger, the heat dissipation capability is strong, a lubricating system is not required to be additionally arranged for heat dissipation, and the manufacturing cost is lower.

Drawings

FIG. 1 is a cross-sectional view of a drum clutch provided in accordance with an embodiment of the present invention;

fig. 2 is an enlarged view at a in fig. 1.

In the figure:

1. a drive shaft; 11. an installation part; 12. an oil through hole; 21. a first piston; 22. a piston guide cylinder; 23. a first drive chamber; 24. a second piston; 25. a second drive chamber; 31. a spring; 32. a spring guide rod; 321. an end cap; 33. a first space ring; 34. a spring sleeve; 341. a limiting boss; 35. a second space ring; 36. a spring cover plate; 41. a first inner cone; 42. a first housing; 43. a second inner cone; 44. a second housing.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, 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.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the drum clutch provided by the present invention is further explained by the specific embodiment with reference to the attached drawings.

The embodiment provides a drum-disc clutch, as shown in fig. 1, the drum-disc clutch includes a transmission shaft 1, a driving device and a friction assembly, the friction assembly includes an inner cone and a housing, the transmission shaft 1 is provided with an installation portion 11, the driving device is connected to the installation portion 11, the inner cone is connected to the driving device, and the inner cone can be engaged with or disengaged from the housing under the driving of the driving device. The friction surface of the inner cone and the friction surface of the outer shell are both conical surfaces, the inner cone and the outer shell are connected through the two conical friction surfaces, the drum-disc clutch is simple in structure, thorough in separation, large in connection area between the two connection surfaces, strong in heat dissipation capacity, free of additional arrangement of a lubricating system for heat dissipation, and low in manufacturing cost.

In this embodiment, as shown in fig. 1 and fig. 2, the driving device includes a piston assembly, the piston assembly includes a first piston 21 and a piston guide cylinder 22, the piston guide cylinder 22 is connected to the mounting portion 11, the first piston 21 is slidably sleeved on the piston guide cylinder 22, and a first driving cavity 23 for introducing pressure oil is formed between the first piston 21 and the mounting portion 11. Preferably, the piston assembly further includes a second piston 24, the second piston 24 is slidably sleeved on the piston guide cylinder 22, and a second driving cavity 25 for introducing pressure oil is formed between the second piston 24 and the mounting portion 11. Specifically, the mounting portion 11 is provided with a mounting hole, the piston guide cylinder 22 is inserted into the mounting hole, and the first piston 21 and the second piston 24 are respectively disposed on two sides of the mounting portion 11.

Preferably, the transmission shaft 1 is provided with an oil through hole 12, and the oil through hole 12 is communicated with the first driving cavity 23 and the second driving cavity 25 and is used for introducing pressure oil into the first driving cavity 23 and the second driving cavity 25 so as to drive the first piston 21 and the second piston 24 to slide in a direction away from the mounting portion 11.

In this embodiment, the friction assembly includes a first inner cone 41, a second inner cone 43, a first outer shell 42 and a second outer shell 44, the first inner cone 41 is connected to the first piston 21, the second inner cone 43 is connected to the second piston 24, the friction surface of the first inner cone 41 and the friction surface of the first outer shell 42 are both provided as conical surfaces, and the first inner cone 41 can be engaged with or disengaged from the first outer shell 42 under the driving of the first piston 21; the friction surface of the second inner cone 43 and the friction surface of the second outer shell 44 are both conical surfaces, and the second inner cone 43 can be engaged with or disengaged from the second outer shell 44 under the driving of the second piston 24.

Because the first inner cone 41 is jointed with the conical friction surface of the first shell 42, and the second inner cone 43 is jointed with the conical friction surface of the second shell 44, the power is transmitted by the conical friction, so that the drum-disk clutch has the advantages of simple structure, stable jointing, thorough separation and overload protection capability; and the joint area between the joint surfaces is large, the heat dissipation capacity is strong, so that the drum-disc clutch does not need to be additionally provided with a lubricating system for heat dissipation, and the manufacturing cost is low.

Specifically, the first housing 42 and the second housing 44 are made of high-quality alloy steel, and the friction surfaces of the first housing 42 and the friction surfaces of the second housing 44 are subjected to surface hardening treatment, so that the wear resistance and the service life of the housing are improved, and the first inner cone 41 and the second inner cone 43 can be prevented from being bonded after heating. More specifically, first interior cone 41 and second interior cone 43 all select alloy forged copper to make, can reduce inside loose, improve its wearability and life, can also avoid bonding with first shell 42 and second shell 44 after generating heat simultaneously.

Furthermore, the friction surfaces of the first inner cone 41 and the second inner cone 43 are provided with chip grooves which are arranged along the axial direction of the transmission shaft 1, so that abraded abrasive dust can enter the chip grooves and then be discharged, the abrasion between the friction surfaces is not aggravated, the friction surfaces are convenient to extrude an oil film when being engaged, and the engagement time of the drum-disk clutch is reduced; when the friction surfaces are disengaged, oil lubrication is formed between the friction surfaces, and the heat generation of the drum-disk clutch is reduced.

It can be understood that the friction surfaces of the first inner cone 41, the second inner cone 43, the first outer shell 42 and the second outer shell 44 can be re-spray-coated and clad for recycling after being worn, which is beneficial to reducing the use cost of the drum-disk clutch.

Preferably, the second housing 44 is connected to the first housing 42, the friction surface of the first housing 42 and the friction surface of the second housing 44 are disposed in a splayed shape, so that a receiving cavity is formed between the first housing 42 and the second housing 44, and the first inner cone 41 and the second inner cone 43 are located in the receiving cavity, so that the first inner cone 41 and the second inner cone 43 slide in the receiving cavity and are not easily separated from the receiving cavity, which is beneficial to improving the safety of the drum clutch.

In this embodiment, the driving device further includes an elastic member mounted on the piston guide 22 and connected to the first piston 21 and the second piston 24, the elastic member being configured to provide a restoring force to the first piston 21 and the second piston 24.

Preferably, the elastic assembly includes a spring 31 and a spring guide rod 32, the spring guide rod 32 is inserted into the piston guide cylinder 22, the spring 31 is disposed in the piston guide cylinder 22 and sleeved on the spring guide rod 32, one end of the spring guide rod 32 is connected to the first piston 21, the other end of the spring guide rod 32 is connected to the first end of the spring 31, the second end of the spring 31 is limited in the piston guide cylinder 22, and the first piston 21 can slide toward the mounting portion 11 under the elastic restoring force of the spring 31 to reset.

Specifically, the elastic assembly further includes a first spacer 33, the first spacer 33 is slidably sleeved on the piston guide cylinder 22, one end of the first spacer 33 is connected to one side of the first piston 21 far away from the mounting portion 11, and the other end of the first spacer 33 is connected to the spring guide rod 32, so that the first piston 21 can drive the spring guide rod 32 to move through the first spacer 33, and the spring 31 is compressed. Further, as shown in fig. 2, an end cap 321 is disposed on the spring guide rod 32, the end cap 321 covers one end of the piston guide cylinder 22, and the first spacer 33 is connected to the spring guide rod 32 through the end cap 321.

In this embodiment, the elastic assembly further includes a spring sleeve 34, the spring sleeve 34 is partially disposed in the piston guide cylinder 22 and sleeved on the spring 31, a portion of the spring sleeve 34 extending out of the piston guide cylinder 22 is connected to the second piston 24, a spring cover plate 36 is connected to the spring guide rod 32, a second end of the spring 31 is limited on an inner wall of the spring sleeve 34, and a first end of the spring 31 is connected to the spring cover plate 36, so that the spring 31 can provide a return force for the spring guide rod 32 and the spring sleeve 34, thereby providing a return force for the first piston 21 and the second piston 24. Preferably, a limiting boss 341 is disposed on an inner wall of the spring sleeve 34, and a second end of the spring 31 away from the spring cover plate 36 is connected to the limiting boss 341, so that the spring 31 is limited between the limiting boss 341 and the spring cover plate 36.

Preferably, the elastic assembly further includes a second spacer 35, the second spacer 35 is slidably sleeved on the piston guide cylinder 22, one end of the second spacer 35 is connected to a side of the second piston 24 away from the mounting portion 11, and the other end of the second spacer 35 is connected to a portion of the spring sleeve 34 extending out of the piston guide cylinder 22. Specifically, the portion of the spring sleeve 34 extending out of the piston guide cylinder 22 is provided with a connecting portion, and one end of the second spacer 35 away from the mounting portion 11 is connected to the connecting portion, so as to connect the second piston 24 with the piston guide cylinder 22.

In this embodiment, the mounting portion 11 has a plurality of mounting holes, each of the mounting holes has a driving device mounted therein, so that the first inner cone 41 and the second inner cone 43 can be driven by the plurality of driving devices, and sufficient pressure can be generated between the first inner cone 41 and the first outer shell 42 and between the second inner cone 43 and the second outer shell 44, which is beneficial to improving the bonding strength between the first inner cone 41 and the first outer shell 42 and between the second inner cone 43 and the second outer shell 44. Preferably, the plurality of mounting holes are evenly spaced about the axis of the drive shaft 1 such that the pressure between the first inner cone 41 and the first housing 42 and between the second inner cone 43 and the second housing 44 is evenly distributed circumferentially of the friction surface of the first inner cone 41 and circumferentially of the friction surface of the second inner cone 43.

The operation of the drum clutch provided in this embodiment will be described below.

When power transmission is required between the transmission shaft 1 and the housing, pressure oil is introduced into the oil passage hole 12, the pressure oil in the first drive cavity 23 and the pressure oil in the second drive cavity 25 act to enable the first piston 21 and the second piston 24 to move back and forth, the first inner cone 41 approaches the first housing 42, the second inner cone 43 approaches the second housing 44 until the friction surface of the first inner cone 41 is engaged with the friction surface of the first housing 42, and the friction surface of the second inner cone 43 is engaged with the friction surface of the second housing 44, in the process, the spring guide rod 32 moves leftwards under the action of the first piston 21, the right end of the spring 31 is compressed through the spring cover plate 36, the spring sleeve 34 moves rightwards under the action of the second piston 24, and the left end of the spring 31 is compressed through the limit boss 341; when the power between the transmission shaft 1 and the housing needs to be cut off, the pressure oil in the first driving cavity 23 and the pressure oil in the second driving cavity 25 lose pressure, the spring 31 extends under the action of self elastic restoring force, the spring sleeve 34 drives the second piston 24 to return to the left, the spring guide rod 32 drives the first piston 21 to return to the right, so that the pressure oil in the first driving cavity 23 and the pressure oil in the second driving cavity 25 flow out through the oil through hole 12, at the moment, the friction surface of the first inner cone 41 is separated from the friction surface of the first housing 42, and the friction surface of the second inner cone 43 is separated from the friction surface of the second housing 44.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

It is noted that throughout the description herein, references to the description of "some embodiments," "other embodiments," or the like, are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A drum clutch, comprising:

a drive shaft (1);

the driving device is arranged on the transmission shaft (1) and comprises a piston assembly and an elastic assembly, the piston assembly comprises a piston capable of moving along the axial direction of the transmission shaft (1), and the elastic assembly is used for providing resetting force for the piston;

2. The drum clutch according to claim 1, wherein the piston assembly comprises a piston guide cylinder (22) and two pistons slidably sleeved on the piston guide cylinder (22), the two pistons are respectively a first piston (21) and a second piston (24), and the first piston (21) and the second piston (24) are capable of moving toward or away from each other along the axial direction of the transmission shaft (1).

3. The drum clutch according to claim 2, wherein the elastic assembly includes a spring (31) and a spring guide rod (32), the spring guide rod (32) is inserted into the piston guide cylinder (22), the spring (31) is disposed in the piston guide cylinder (22) and sleeved on the spring guide rod (32), and the spring (31) is compressed when the first piston (21) and the second piston (24) move away from each other.

4. The drum clutch according to claim 3, characterized in that one end of the spring guide rod (32) is connected to the first piston (21), the other end of the spring guide rod (32) is connected to a spring cover plate (36), a first end of the spring (31) is retained by the spring cover plate (36), and a second end of the spring (31) is retained in the piston guide cylinder (22).

5. The drum clutch according to claim 4, wherein the elastic assembly further comprises a spring sleeve (34), the spring sleeve (34) is partially disposed in the piston guide cylinder (22) and sleeved on the spring (31), the portion of the spring sleeve (34) extending out of the piston guide cylinder (22) is connected to the second piston (24), and the second end of the spring (31) is limited by the spring sleeve (34).

6. The drum clutch according to claim 5, wherein a limit boss (341) is provided on an inner wall of the spring sleeve (34), and both ends of the spring (31) are connected to the spring cover plate (36) and the limit boss (341), respectively.

7. The drum clutch according to claim 2, characterized in that a first drive chamber (23) for the admission of pressurized oil is formed between the first piston (21) and the drive shaft (1), and a second drive chamber (25) for the admission of pressurized oil is formed between the second piston (24) and the drive shaft (1).

8. The drum clutch according to claim 7, wherein the transmission shaft (1) is provided with an oil passage hole (12), and the oil passage hole (12) communicates with the first drive chamber (23) and the second drive chamber (25).

9. The drum clutch according to claim 2, characterized in that the friction assembly comprises a first inner cone (41), a first outer shell (42), a second inner cone (43) and a second outer shell (44), the first inner cone (41) being connected to the first piston (21) and the second inner cone (43) being connected to the second piston (24), the first inner cone (41) being engageable with or disengageable from the first outer shell (42) upon actuation of the first piston (21), the second inner cone (43) being engageable with or disengageable from the second outer shell (44) upon actuation of the second piston (24).

10. The drum clutch according to claim 1, characterized in that the friction surfaces of the inner cone are provided with junk slots, which are arranged in the axial direction of the drive shaft (1).