CN216951372U - Clutch, gearbox and engineering vehicle of split type piston structure - Google Patents
Clutch, gearbox and engineering vehicle of split type piston structure Download PDFInfo
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- CN216951372U CN216951372U CN202220634747.2U CN202220634747U CN216951372U CN 216951372 U CN216951372 U CN 216951372U CN 202220634747 U CN202220634747 U CN 202220634747U CN 216951372 U CN216951372 U CN 216951372U
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- piston assembly
- friction plate
- input shaft
- clutch
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model discloses a clutch, a gearbox and an engineering vehicle with a split piston structure, which comprise a piston assembly, a fixed seat, a hub body, a gear ring, a friction plate set and an input shaft, wherein the piston assembly is arranged on the fixed seat; the upper end part of the piston assembly is supported on the fixed seat, and the lower end part of the piston assembly and the friction plate set are in a pressing or separating state; the oil seal between the piston assembly and the hub body forms a sealed oil cavity, and driving oil enters the oil cavity through an oil way on the hub body; the friction plate set is respectively connected with the input shaft and the gear ring, when a piston in the piston assembly compresses the friction plate set, the input shaft and the gear ring transmit power together, and when the piston in the piston assembly does not compress the friction plate set, the input shaft is disconnected from the gear ring. The sealing function and the friction plate group control function of the split piston structure are independent in the circumferential direction, and the split part is simpler in processing technology and high in feasibility; reduce oil blanket wearing and tearing, promote the life in sealed chamber, the quality of gearbox is more reliable.
Description
Technical Field
The utility model relates to a clutch with a split type piston structure, and belongs to the field of gearboxes.
Background
The clutch of the existing planetary gearbox with an integral piston structure comprises a piston, a hub body, a friction plate set, a gear ring, an input shaft and a spring. The piston is integral, N groups of springs are uniformly distributed on the circumference of the piston, the sealing rings are arranged in an inner hole and an outer hole groove of the piston, and the oil pressure control piston compresses or loosens the friction plate assembly to realize power transmission or disconnection of the input shaft and the gear ring. When the high-speed input is carried out, the piston does not only axially move but also circularly move in the hub body, the loss of a sealing ring is serious, the service cycle is short, the contact surface between the piston and the friction plate set is frequently abraded, and the piston is frequently replaced in the market; the pretension force of the N groups of springs controls the return of the piston, the consistency control difficulty of the springs is high, and the piston is easy to deflect and unsmooth.
SUMMERY OF THE UTILITY MODEL
According to the defects of the prior art, the utility model discloses a clutch with a split type piston structure, the sealing function and the function of controlling a friction plate set of the split type piston structure are independent in the circumferential direction, and the split part has simpler processing technology and high feasibility; the post-market maintenance cost is low, and easily-damaged parts in the piston assembly can be replaced independently, so that the integral replacement is avoided; the abrasion of an oil seal is reduced, the service life of a sealing cavity is prolonged, and the quality of the gearbox is more reliable; the pressure consistency of the disc spring is good, and the piston moves smoothly.
The utility model is realized according to the following technical scheme:
the utility model discloses a clutch with a split type piston structure, which comprises a piston assembly, a fixed seat, a hub body, a gear ring, a friction plate set and an input shaft, wherein the piston assembly is fixed on the fixed seat; the upper end part of the piston assembly is supported on the fixed seat, and the lower end part of the piston assembly and the friction plate set are in a pressing or separating state; the oil seal between the piston assembly and the hub body forms a sealed oil cavity, and the driving oil enters the oil cavity through an oil way on the hub body; the piston assembly comprises a piston, a friction plate group, a gear ring, a piston assembly and a power transmission device, wherein the friction plate group is connected with an input shaft and the gear ring respectively, when a piston in the piston assembly presses the friction plate group, the input shaft and the gear ring transmit power together, and when the piston in the piston assembly does not press the friction plate group, the input shaft is disconnected with the gear ring.
Further scheme: the piston assembly mainly comprises a disc spring set, a piston I, a thrust bearing, a piston II and a spring.
Further scheme: the upper end part of the piston assembly is supported on the fixed seat through a disc spring group.
Further scheme: the lower end part of the piston assembly is in a pressing or separating state with the friction plate set through a piston II.
Further scheme: the piston I, the thrust bearing and the piston II are sequentially sleeved in the input shaft, and can axially move on the input shaft after being tightly attached together, and the piston II can circularly move relative to the piston I under the action of the thrust bearing.
Further scheme: and a spring is sleeved in the input shaft below the piston II, and the piston I, the thrust bearing and the piston II are tightly attached together through the pretightening force of the spring.
Further scheme: and a sealed oil cavity is formed between the piston assembly and the hub body through two oil seals.
Further scheme: and a fixed seat bulge for limiting the stroke of the piston assembly is arranged in the fixed seat.
The utility model also discloses a gearbox, and the clutch with the split piston structure is installed.
The utility model also discloses an engineering vehicle which is provided with the gearbox.
The utility model has the beneficial effects that:
compared with the clutch with an integral piston structure, the two functions of sealing and controlling the friction plate set of the split piston structure are consistent in axial direction, and circular motion can be independent respectively, and the clutch has the following advantages:
1. the processing technology on the split structure is simpler and more feasible;
2. the after-sale service cost is low, the piston II which is easy to wear can be replaced independently, and the integral replacement is not needed;
3. the piston I avoids circumferential rotation, and only moves axially with the oil cavity seal of the hub body, so that the service life of an oil seal can be effectively prolonged, and the quality of the whole box is ensured to be reliable;
4. compared with a plurality of groups of distributed springs, the pressure of the disc springs is uniformly distributed, and the consistency is good.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model without limiting the utility model to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
fig. 1 is a cross-sectional view of a clutch of a split piston configuration of the present invention.
The attached drawings are as follows: 1. a piston assembly; 11. a disc spring set; 12. a piston I; 13. a thrust bearing; 14. a piston II; a spring; 2. a fixed seat; 21. the fixed seat is convex; 3. a hub body; 31. oil sealing; 4. a ring gear; 5. a friction plate set; 6 an input shaft; a. an oil chamber; b. an oil passage.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a clutch with a split piston structure includes a piston assembly 1, a fixed seat 2, a hub 3, a ring gear 4, a friction plate set 5 and an input shaft 6; the upper end part of the piston assembly 1 is supported on the fixed seat 2, and the lower end part of the piston assembly 1 and the friction plate group 5 are in a pressing or separating state; an oil seal 31 between the piston assembly 1 and the hub body 3 forms a sealed oil chamber a, and the driving oil enters the oil chamber a through an oil passage b on the hub body 3; the friction plate group 5 is respectively connected with the input shaft 6 and the gear ring 4, when the piston in the piston assembly 1 presses the friction plate group 5, the input shaft 6 and the gear ring 4 transmit power together, and when the piston in the piston assembly 1 does not press the friction plate group 5, the input shaft 6 is disconnected with the gear ring 4.
With continued reference to fig. 1, the piston assembly 1 is mainly composed of a disc spring set 11, a piston I12, a thrust bearing 13, a piston II14, and a spring 15. The upper end of the piston assembly 1 is supported on the fixed seat 2 through a disc spring set 11. The lower end part of the piston assembly 1 is pressed or separated from the friction plate group 5 through a piston II 14. The piston I12, the thrust bearing 13 and the piston II14 are sequentially sleeved in the input shaft 6, and can move axially on the input shaft 6 after being tightly attached together, and the piston II14 can move circularly relative to the piston I12 under the action of the thrust bearing 13.
Further scheme: the input shaft 6 below the piston II14 is sleeved with a spring 15, and the piston I12, the thrust bearing 13 and the piston II14 are tightly attached together by the pre-tightening force of the spring 15.
The preferable scheme is as follows: a sealed oil chamber a is formed between the piston assembly 1 and the hub body 3 by two oil seals 31.
Further scheme: the fixed seat 2 is provided with a fixed seat bulge 21 for limiting the stroke of the piston assembly 1.
From the above, the present invention is composed of a piston assembly 1, a fixed seat 2, a hub body 3, a gear ring 4, a friction plate set 5 and an input shaft 6. The piston assembly comprises a disc spring set 11, a piston I12, a thrust bearing 13, a piston II14 and a spring 15, wherein the upper end part of the piston assembly 1 is supported on the fixed seat 2 through the disc spring set 11, the lower end part of the piston assembly 1 is in a pressing or separating state with the friction plate set 5, a sealed oil cavity a is formed between the piston assembly 1 and the hub body 3 through 2 oil seals 31, and driving oil enters the oil cavity a through an oil passage b. The pre-load of the spring 15 ensures that the piston I12 and the piston II14 are not separated. The piston I12 only moves axially, the piston II14 not only can move axially, the thrust bearing 13 can make the piston I12 move circularly, the fixed seat bulge 21 limits the stroke of the piston assembly 1, the friction plate group 5 is respectively connected with the input shaft 6 and the gear ring 4, when the piston II14 presses the friction plate group 5, the input shaft 6 and the gear ring 4 transmit power together, and when the piston II14 does not press the friction plate group 5, the input shaft 6 is disconnected from the gear ring 4.
When power is transmitted in through the input shaft 6, no hydraulic oil enters the oil cavity a through the oil passage b, the pretightening force of the disc spring group 11 is larger than the pretightening force of the spring 15, the piston assembly 112 compresses the friction plate group 5, the input shaft 6 and the gear ring 4 are integrated, and the power is output through the gear ring 4.
When power is transmitted through the input shaft 6, hydraulic oil enters the oil cavity a through the oil passage b, the oil pressure in the cavity gradually overcomes the pressure of the disc spring group 11, the piston I12 moves upwards axially until the fixed seat bulge 21 stops, meanwhile, the pretightening force of the spring 15 presses the piston II14, the piston assembly 1 moves integrally and axially, the piston II14 is gradually separated from the friction plate group 5, in the separation process, the piston II14 and the input shaft 6 do circular motion together, but the piston I12 does not do circular motion, when the piston II14 is separated from the friction plate group 5, the input shaft 6 is disconnected from the gear ring 4, and the power is not output through the gear ring 4.
The utility model also discloses a gearbox, and the clutch with the split piston structure is installed. The sealing function and the friction plate group control function of the split piston structure are independent in the circumferential direction, and the split part is simpler in processing technology and high in feasibility; the post-market maintenance cost is low, and easily-damaged parts in the piston assembly can be replaced independently, so that the integral replacement is avoided; the abrasion of an oil seal is reduced, the service life of a sealing cavity is prolonged, and the quality of the gearbox is more reliable; the pressure consistency of the disc spring is good, and the piston moves smoothly.
The utility model also discloses an engineering vehicle which is provided with the gearbox.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. A clutch of split piston structure which characterized in that:
the hub comprises a piston assembly, a fixed seat, a hub body, a gear ring, a friction plate group and an input shaft;
the upper end part of the piston assembly is supported on the fixed seat, and the lower end part of the piston assembly and the friction plate set are in a pressing or separating state;
the oil seal between the piston assembly and the hub body forms a sealed oil cavity, and the driving oil enters the oil cavity through an oil way on the hub body;
the piston assembly comprises a piston, a friction plate group, a gear ring, a piston assembly and a power transmission device, wherein the friction plate group is connected with an input shaft and the gear ring respectively, when a piston in the piston assembly presses the friction plate group, the input shaft and the gear ring transmit power together, and when the piston in the piston assembly does not press the friction plate group, the input shaft is disconnected with the gear ring.
2. The clutch of the split piston structure according to claim 1, wherein:
the piston assembly mainly comprises a disc spring set, a piston I, a thrust bearing, a piston II and a spring.
3. The clutch of the split piston structure according to claim 2, wherein:
the upper end part of the piston assembly is supported on the fixed seat through a disc spring group.
4. The clutch of the split piston structure according to claim 2, wherein:
the lower end part of the piston assembly is in a pressing or separating state with the friction plate set through a piston II.
5. The clutch of the split piston structure according to claim 2, wherein:
the piston I, the thrust bearing and the piston II are sequentially sleeved in the input shaft, and can axially move on the input shaft after being tightly attached together, and the piston II can circularly move relative to the piston I under the action of the thrust bearing.
6. The clutch of the split piston structure according to claim 5, wherein:
and a spring is sleeved in the input shaft below the piston II, and the piston I, the thrust bearing and the piston II are tightly attached together through the pretightening force of the spring.
7. The clutch of the split piston structure according to claim 1, wherein:
and a sealed oil cavity is formed between the piston assembly and the hub body through two oil seals.
8. The clutch of the split piston structure according to claim 1, wherein:
and a fixed seat bulge for limiting the stroke of the piston assembly is arranged in the fixed seat.
9. A transmission, characterized by:
a clutch fitted with a split piston arrangement as claimed in any one of claims 1 to 8.
10. A work vehicle, characterized in that:
a gearbox according to claim 9 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220634747.2U CN216951372U (en) | 2022-03-23 | 2022-03-23 | Clutch, gearbox and engineering vehicle of split type piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220634747.2U CN216951372U (en) | 2022-03-23 | 2022-03-23 | Clutch, gearbox and engineering vehicle of split type piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951372U true CN216951372U (en) | 2022-07-12 |
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ID=82297410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220634747.2U Active CN216951372U (en) | 2022-03-23 | 2022-03-23 | Clutch, gearbox and engineering vehicle of split type piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951372U (en) |
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2022
- 2022-03-23 CN CN202220634747.2U patent/CN216951372U/en active Active
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