CN211371087U - Multi-disc wet brake combined with lever structure - Google Patents
Multi-disc wet brake combined with lever structure Download PDFInfo
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- CN211371087U CN211371087U CN201922005894.4U CN201922005894U CN211371087U CN 211371087 U CN211371087 U CN 211371087U CN 201922005894 U CN201922005894 U CN 201922005894U CN 211371087 U CN211371087 U CN 211371087U
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Abstract
The utility model provides a combine lever structure's multi-disc wet brake, piston supporting shoe clearance suit is on the outer support, the supporting suit of first piston assembly is on the piston supporting shoe and first piston assembly part surpasss the piston supporting shoe, first piston assembly forms the high pressure oil pocket between terminal surface in terminal surface and the outer support inner chamber inwards, the high pressure oil pocket is linked together with the oil feed oil duct of outer support, the supporting suit of second piston assembly is on the outer support, the terminal surface outwards contacts with the piston supporting shoe terminal surface inwards of second piston assembly, the boss of second piston assembly is terminal surface outwards contacts with the terminal surface outwards of first piston assembly inwards, a plurality of effect lever clamps on the outer support, the upper end of effect lever, the lower extreme is terminal surface just to second piston assembly terminal surface outwards respectively inwards, outermost antithetical couplet piece terminal surface outwards, the effect lever can the horizontal hunting. The utility model discloses simple structure, convenient to use can realize great locking moment of torsion and less axial space demand.
Description
Technical Field
The utility model relates to a multi-disc wet brake who combines lever structure.
Background
In the configuration of the planetary gear hybrid power synthesis box, the vehicle can output higher torque in a pure electric mode by locking the input shaft of the engine, fixed transmission ratio transmission is realized, and better acceleration performance is obtained, and parts for locking the input shaft of the engine are generally multi-piece wet brakes. The locking torque requirement for locking the output shaft of the engine is very large, but the locking torque requirement is limited by the internal space of the gearbox, so that the difficulty is increased for the design of the brake, and the two ways of increasing the locking torque of the brake at present are generally as follows: firstly, the stress area of the piston is increased or the hydraulic oil pressure of hydraulic oil is increased; and secondly, the number and the area of the friction plates are increased. However, both of these methods are limited by the space inside the transmission, the cost and the energy consumption, and the achievement effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple structure, convenient to use, can realize the combination lever structure's of great locking moment of torsion and less axial space demand multi-disc wet brake.
The method is realized by the following scheme:
a multi-disc wet brake combined with a lever structure comprises an outer support, an inner support and a plurality of dual-disc pieces, wherein the inner support is sleeved in the outer support in an overhead manner, the outer rings of the dual-disc pieces are connected to the outer support in a splined manner, a friction disc is arranged between every two adjacent dual-disc pieces, a gap is reserved between the friction disc and the dual-disc pieces, the inner rings of the friction disc are connected to the inner support in a splined manner, the dual-disc pieces and the friction disc can move axially, the multi-disc wet brake further comprises a first piston assembly, a second piston assembly, a piston support block and a plurality of action levers, the outer support is provided with a cavity which is annular in cross section and is provided with an opening at one end and a closed at one end, the outer support is provided with an oil inlet duct, the piston support block is T-shaped in side view, the gap of the piston support block is sleeved on the outer support and is, the oil groove penetrating through two end faces is formed in the inner wall of the piston supporting block, the first piston assembly is sleeved on the piston supporting block in a matched mode, the first piston assembly partially exceeds the piston supporting block, a high-pressure oil cavity is formed between the inward end face of the first piston assembly and the inner end face of the inner cavity of the outer support, the high-pressure oil cavity is communicated with the oil inlet oil duct of the outer support, the outer side face of the first piston assembly is in contact with the outer side inner wall of the inner cavity of the outer support, the second piston assembly is sleeved on the outer support in a matched mode and is arranged in the inner cavity of the outer support, the inward end face of the second piston assembly is in contact with the outward end face of the piston supporting block, the outer side face of the second piston assembly is in contact with the inner wall of the portion, beyond the piston supporting block, the inward end face of the, The second piston assembly can move axially, the action levers are clamped on the outer support, the upper ends of the action rods are arranged in the inner cavity of the outer support, the lower ends of the action rods are arranged in the inner ring of the outer support, the inward end faces of the upper ends of the action levers are opposite to the outward end faces of the second piston assembly, the inward end faces of the lower ends of the action rods are opposite to the outward end faces of the outermost dual pieces, and the action levers can swing left and right. The number of the dual sheets can be adjusted and designed according to needs, the number and the distribution positions of the action levers can be adjusted and designed according to needs, and the action levers are uniformly distributed on the outer support. During actual manufacturing, the first piston assembly can be provided with the exhaust hole, so that air in a space formed between the first piston assembly and the piston supporting block can be conveniently exhausted, and the axial movement of the first piston assembly is facilitated. The piston supporting block does not axially move, when the oil cavity of the second piston assembly is not filled with oil, the piston supporting block is pressed by the spring force of the return spring, and when the oil cavity of the second piston assembly is filled with oil, the piston supporting block is pressed by the pressure of hydraulic oil, so that the non-axial movement of the piston supporting block is realized. During actual manufacturing, O-shaped rings are respectively arranged between the outer side surface of the first piston assembly and the outer side inner wall of the outer support inner cavity, between the first piston assembly and the piston supporting block, between the outer side surface of the second piston assembly and the inner wall of the part, exceeding the piston supporting block, of the first piston assembly, and between the inner wall of the second piston assembly inner cavity and the outer support.
Furthermore, the device also comprises a return spring, wherein the return spring is sleeved on the outer support and is arranged in the inner cavity of the outer support, and the inward end face of the return spring is contacted with the outward end face of the action lever.
Further, the return spring is disc-shaped.
Furthermore, the outward end face of the return spring is in contact with an axial elastic check ring for the second hole, and the axial elastic check ring for the second hole is installed on the inner wall of the outer side of the inner cavity of the outer support. The second hole plays a limiting role by an axial elastic retaining ring to limit the axial movement of the reset spring.
Further, the outer end face of the innermost dual piece is in contact with a first hole axial elastic check ring, and the first hole axial elastic check ring is installed on the outer support. The first hole plays a limiting role by using an axial elastic retaining ring to limit the innermost dual-coupler sheet from axially moving.
The multi-disc wet brake combining the lever structure has simple structure and convenient use, can realize larger locking torque and smaller axial space requirement, and meets the requirements of light weight and dynamic property of the automobile; it is possible to achieve a sufficient pressing force of the piston at a small hydraulic oil pressure, thereby reducing the performance requirements of the hydraulic pump.
Drawings
Fig. 1 is a schematic cross-sectional view of a half of a multi-plate wet brake (off state) incorporating a lever structure in embodiment 1;
fig. 2 is a half sectional view schematically showing a multi-plate wet brake (in a coupled state) in accordance with the lever structure of embodiment 1.
Detailed Description
The embodiment is only for illustrating one implementation of the present invention, and is not to be taken as a limiting illustration of the protection scope of the present invention.
Example 1
A multi-piece wet brake combining a lever structure is disclosed, as shown in figures 1 and 2 (only a half section view of the multi-piece wet brake combining the lever structure is shown by taking the central axis of an inner support as a symmetrical shaft), and comprises an outer support 1, an inner support 2, five dual pieces 3, a first piston assembly 4, a second piston assembly 5, a piston supporting block 6, twelve acting levers 7 and a return spring 8, wherein the return spring 8 is disc-shaped, the inner support 2 is sleeved in the outer support 1 in an empty way, the outer rings of the five dual pieces 3 are connected to the outer support 1 in a spline way, a friction piece 9 is arranged between every two adjacent dual pieces 3, a gap is reserved between the friction piece 9 and the dual pieces 3, the inner rings of the friction piece 9 are connected to the inner support 2 in a spline way, the dual pieces 3 and the friction piece 9 can move axially, the outward end face of the innermost dual piece 3 is in contact with a first hole through an axial, the first hole is mounted on the outer bracket 1 by an axial elastic retainer ring 10, a cavity 101 with an annular cross section, an opening at one end and a closed end is arranged on the outer bracket 1, an oil inlet duct 102 is arranged on the outer bracket 1, a piston supporting block 6 is T-shaped in side view, a clearance of the piston supporting block 6 is sleeved on the outer bracket 1 and is arranged in the inner cavity 101 of the outer bracket 1, a certain clearance is reserved between the inward end surface of the piston supporting block 6 and the inner end surface of the inner cavity 101 of the outer bracket 1, an oil groove 601 penetrating through two end surfaces is arranged on the inner wall of the piston supporting block 6, a first piston assembly 4 is sleeved on the piston supporting block 6 in a matching way, part of the first piston assembly 4 exceeds the piston supporting block 6, a high-pressure oil cavity 103 is formed between the inward end surface of the first piston assembly 4 and the inner end surface of the inner cavity 101 of the outer bracket 1, the high-pressure oil cavity 103, the first piston assembly 4 is provided with an exhaust hole 401, the exhaust hole 401 can exhaust air in a space formed between the first piston assembly 4 and the piston supporting block 6, the second piston assembly 5 is sleeved on the outer bracket 1 in a matching manner and is arranged in the inner cavity 101 of the outer bracket 1, the inward end face of the second piston assembly 5 is contacted with the outward end face of the piston supporting block 6, the outer side face of the second piston assembly 5 is contacted with the inner wall of the part, exceeding the piston supporting block 6, of the first piston assembly 4, the inward end face of the boss 501 of the second piston assembly 5 is contacted with the outward end face of the first piston assembly 4, the first piston assembly 4 and the second piston assembly 5 can move axially, the outer side face of the first piston assembly 4 is between the outer side inner wall of the inner cavity 101 of the outer bracket 1, the first piston assembly 4 is between the piston supporting block 6, the outer side face of the second piston assembly 5 is contacted with the inner wall of the part, exceeding, O-rings 12 are respectively arranged between the inner wall of the inner cavity of the second piston assembly 5 and the outer bracket 1, twelve action levers 7 are clamped on the outer bracket 1, the upper ends of the action levers 7 are arranged in the inner cavity 101 of the outer bracket 1, the lower end of an action rod 7 is arranged in an inner ring of an outer support 1, the inward end face of the upper end of the action lever 7 is opposite to the outward end face of a second piston assembly 5, the inward end face of the lower end of the action rod 7 is opposite to the outward end face of an outermost dual piece 3, the action lever 7 can swing left and right around a fulcrum on the outer support 1, a return spring 8 is sleeved on the outer support 1 and is arranged in an inner cavity 101 of the outer support 1, the inward end face of the return spring 8 is contacted with the outward end face of the action lever 7, the outward end face of the return spring 8 is contacted with an axial elastic check ring 11 for a second hole, and the axial elastic check ring 11 for the second hole is arranged on the outer inner.
In particular, of multi-disc wet brakes combined with lever structuresExternal supportOf multi-disc wet brakes fixed to the gearbox casing and incorporating lever structuresInner supportIs fixed with the input shaft of the engine. When the lever structure combined wet brake is combined, hydraulic oil enters the piston cavity of the first piston assembly from the oil inlet oil duct of the outer bracket through the high-pressure oil cavity, and meanwhile, the hydraulic oil also passes through the oil of the piston supporting block from the high-pressure oil cavityThe groove enters a piston cavity of the second piston assembly, the first piston assembly and the second piston assembly are pushed to move rightwards at the same time, the second piston assembly is made to be in contact with the upper end of the acting lever, then the second piston assembly continues to move rightwards and overcomes the spring force of the return spring to push the upper end of the acting lever to swing rightwards, the acting lever rotates clockwise around the outer support at the moment, the lower end of the acting lever presses the outermost dual piece, the dual piece extrudes the friction plate, the gap between the friction plate and the dual piece is eliminated, friction torque is generated, the braking effect of the multi-piece wet brake is finally achieved, and the state diagram of the multi-piece wet brake combining the lever structure is shown in fig..
When the multi-disc wet brake combined with the lever structure is separated, namely disconnected, hydraulic oil in piston cavities of the first piston assembly and the second piston assembly is removed, the acting lever is pushed to reset by the acting force of the reset spring, the second piston assembly is pushed to reset leftwards at the same time, the first piston assembly also resets leftwards along with the pushing of the second piston assembly, the acting lever is separated from the outermost dual disc, the gap between the friction disc and the dual disc is gradually increased, the friction torque is reduced, finally the multi-disc wet brake is disconnected, and the state diagram of the multi-disc wet brake combined with the lever structure is shown in figure 1.
Example 2
A lever structure-combined multi-disc wet brake having a structure substantially similar to that of the lever structure-combined multi-disc wet brake of embodiment 1, except that: the number of the dual sheets is six, and the number of the action levers is ten.
Claims (5)
1. A multi-disc wet brake combined with a lever structure comprises an outer support, an inner support and a plurality of dual-disc pieces, wherein the inner support is sleeved in the outer support in an overhead mode, outer rings of the dual-disc pieces are connected to the outer support in a splined mode, friction plates are arranged between every two adjacent dual-disc pieces, gaps are reserved between the friction plates and the dual-disc pieces, inner rings of the friction plates are connected to the inner support in a splined mode, and the dual-disc pieces and the friction plates can move axially, and the multi-disc wet brake is characterized in that: the oil-feeding mechanism comprises an outer support, a first piston assembly, a second piston assembly, a piston supporting block and a plurality of action levers, wherein a cavity with an annular cross section and an open end and a closed end is arranged on the outer support, an oil-feeding oil duct is arranged on the outer support, the piston supporting block is T-shaped in side view, a piston supporting block gap is sleeved on the outer support and is arranged in an inner cavity of the outer support, a certain gap is reserved between the inward end surface of the piston supporting block and the inner end surface of the inner cavity of the outer support, oil grooves penetrating through two end surfaces are formed in the inner wall of the piston supporting block, the first piston assembly is sleeved on the piston supporting block in a matching way, the first piston assembly partially exceeds the piston supporting block, a high-pressure oil cavity is formed between the inward end surface of the first piston assembly and the inner end surface of the inner cavity of the outer support, the high-pressure oil cavity, the second piston assembly is sleeved on the outer support in a matched mode and is arranged in an inner cavity of the outer support, the inward end face of the second piston assembly is in contact with the outward end face of the piston supporting block, the outer side face of the second piston assembly is in contact with the inner wall, exceeding the piston supporting block, of the first piston assembly, the inward end face of the boss of the second piston assembly is in contact with the outward end face of the first piston assembly, the first piston assembly and the second piston assembly can move axially, the action levers are clamped on the outer support, the upper ends of the action levers are arranged in the inner cavity of the outer support, the lower ends of the action levers are arranged in the inner ring of the outer support, the inward end faces of the upper ends of the action levers are opposite to the outward end face of the second piston assembly, the inward end faces of the action levers are opposite to the outward end faces of the outermost.
2. The multi-plate wet brake in combination with a lever structure according to claim 1, wherein: the reset spring is sleeved on the outer support and is arranged in an inner cavity of the outer support, and the inward end face of the reset spring is in contact with the outward end face of the action lever.
3. The multi-plate wet brake in combination with a lever structure according to claim 2, wherein: the reset spring is disc-shaped.
4. The multi-plate wet brake in combination with a lever structure according to claim 2, wherein: the outward end face of the reset spring is in contact with the axial elastic check ring for the second hole, and the axial elastic check ring for the second hole is installed on the inner wall of the outer side of the inner cavity of the outer support.
5. The multi-plate wet brake in combination with the lever structure according to any one of claims 1 to 4, wherein: the outer end face of the innermost dual piece is in contact with a first hole axial elastic check ring, and the first hole axial elastic check ring is arranged on the outer support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922005894.4U CN211371087U (en) | 2019-11-20 | 2019-11-20 | Multi-disc wet brake combined with lever structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922005894.4U CN211371087U (en) | 2019-11-20 | 2019-11-20 | Multi-disc wet brake combined with lever structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211371087U true CN211371087U (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922005894.4U Active CN211371087U (en) | 2019-11-20 | 2019-11-20 | Multi-disc wet brake combined with lever structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211371087U (en) |
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2019
- 2019-11-20 CN CN201922005894.4U patent/CN211371087U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220915 Address after: No.16 Gongxin Avenue, industrial park, Yifeng County, Yichun City, Jiangxi Province Patentee after: Jiangxi Dingsheng New Material Technology Co.,Ltd. Address before: 528000 No.1, ChanGang North Road, Nanzhuang Town, Chancheng District, Foshan City, Guangdong Province Patentee before: CORUN HYBRID POWER TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |