CN115750622A - Double-pressure brake control device and wet brake - Google Patents
Double-pressure brake control device and wet brake Download PDFInfo
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- CN115750622A CN115750622A CN202211328949.5A CN202211328949A CN115750622A CN 115750622 A CN115750622 A CN 115750622A CN 202211328949 A CN202211328949 A CN 202211328949A CN 115750622 A CN115750622 A CN 115750622A
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Abstract
The invention discloses a double-pressure brake control device and a wet brake, which comprise a first brake hub and a second brake hub which are coaxially distributed, and further comprise a driving assembly, a pressure plate, a first brake piece, a pressure-bearing piece, a second brake piece and a pad disc which are sequentially distributed along the axial direction of the first brake hub, wherein an elastic reset assembly is arranged in front of the pressure plate and the pad disc, and a support spring is arranged between the pressure-bearing piece and the pad disc; the first brake hub is fixedly arranged on the driving shaft, and the second brake hub is sleeved on the driving shaft; the planetary reduction mechanism comprises a planetary gear ring, the planetary gear ring is connected with a zero shaft of the differential, and the second brake hub is connected with the planetary gear ring. The invention improves the brake control characteristic of the wet brake of the electric drive axle, controls the braking torque and the sequence time of the dynamic brake and the differential brake, improves the brake characteristic and improves the running safety of the vehicle.
Description
Technical Field
The invention relates to the technical field of electric drive axles, in particular to a double-pressure brake control device and a wet brake.
Background
In the prior art, mechanisms which adopt a brake plate (the brake plate comprises a dynamic friction plate and a static friction plate) and a brake hub to brake in cooperation in the vehicle interior need a separate driving assembly to brake separately, and no relevance exists between brake control devices of related mechanisms. For example, a clutch, a differential mechanism or a wet brake can adopt a brake block to brake, and the adoption of single brake control or simultaneous brake control of related mechanisms in the existing vehicle has more problems: (1) When the brake is controlled independently, a plurality of brake control devices are adopted, the devices are complex to install and arrange, and the occupied space is large; (2) Meanwhile, during control, the functions of mechanisms such as a differential mechanism and the like are limited, and the braking performance of the vehicle is low.
In tracked vehicle, wet brake's on the electric drive axle braking control characteristic is comparatively single, and differential and motor shaft brakeing simultaneously when the vehicle braking, the differential system of braking wheel makes the a steering system of vehicle receive the influence, and the differential mechanism is braked to the while of brake motor, easily causes the vehicle out of control, and the security performance that traveles of vehicle is lower.
For example, chinese patent publication No. CN103465777B, published 2016, 01, 20, entitled "dual differential electromechanical compound transmission for tracked vehicle", includes 2 driving motors, 2 sets of 3-gear planetary speed change mechanisms, a left collecting planetary line, a right collecting planetary line, 2 zero shafts connecting the left collecting line and the right collecting line, 4 pairs of connecting gears, 2 sets of reduction planetary lines, 2 sets of main brakes, and 2 sets of side reduction mechanisms. The invention only adopts the form of two driving motors, arranges two confluence planet bars and connects two differentials through two zero shafts similar to the form of double-power flow driving.
The existing patents have the following disadvantages: in the prior art, the power brake and the differential brake of the electric drive axle are controlled simultaneously, the differential is braked while the motor is braked, the brake performance of the vehicle is lower, and the differential is braked easily to cause the vehicle to be out of control during braking.
Disclosure of Invention
The invention aims to solve the problems that no relevance exists before a vehicle brake control device in the prior art and the brake control performance is reduced, and provides a dual-pressure brake control device which controls different mechanisms in a segmented control mode, improves the brake performance and reduces the occupied space of parts.
The invention also aims to solve the problems that in the prior art, the differential is braked easily to cause vehicle out of control when the differential is braked when a motor is braked and the differential is braked when the motor is braked, and provides a wet brake which is used for controlling the dynamic brake and the differential brake of the vehicle respectively in sequence, improving the brake characteristic of the vehicle and improving the driving safety of the vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-pressure brake control device comprises a first brake hub and a second brake hub which are coaxially distributed, and further comprises a driving assembly, a pressure plate, a first brake piece, a pressure bearing piece, a second brake piece and a pad disc which are sequentially distributed along the axis direction of the first brake hub, wherein an elastic reset assembly is arranged in front of the pressure plate and the pad disc, a supporting spring is arranged between the pressure bearing piece and the pad disc, the first brake piece is sleeved on the first brake hub and used for braking the first brake hub, and the second brake piece is sleeved on the second brake piece and used for braking the second brake hub. The scheme controls the braking of the two mechanisms through one double-pressure braking control device. In the prior art, a first brake hub or a second brake hub is arranged on or sleeved on an output shaft, and the first brake hub or the second brake hub can be arranged on a clutch, a wet brake or coupled with a differential. According to the scheme, the brake control mechanisms of the two mechanisms are integrated on one device, the two mechanisms are braked in a segmented mode in a sequential control mode, for example, the first brake hub is fixed on the driving shaft, the second brake hub is sleeved on the driving shaft, and the second brake hub is connected with the differential or the clutch through the rotating piece.
Preferably, the bearing piece is sleeved on the outer sides of the first brake hub and the second brake hub. There is the clearance between the interior circle of pressure-bearing piece and the lateral wall of first braking hub, there is the clearance between the interior circle of pressure-bearing piece and the lateral wall of second braking hub. The bearing member moves along the axial direction of the drive shaft without interfering with the first brake hub and the second brake hub.
A wet brake comprising the dual pressure brake control device of any one of the preceding claims, further comprising:
the driving shaft is driven by a driving motor, the first brake hub is fixedly arranged on the driving shaft, and the second brake hub is sleeved on the driving shaft;
the planetary reduction mechanism comprises a planetary gear ring, the planetary gear ring is connected with a zero shaft of the differential, and the second brake hub is connected with the planetary gear ring. The scheme is used for perfecting the brake control characteristic of the wet brake of the electric drive axle, and controlling the braking torque and the sequence time of dynamic braking and differential braking, thereby improving the brake characteristic and improving the running safety of the vehicle. According to the scheme, a pressure bearing piece of a wet brake pad of a brake motor shaft is subjected to back pressure by a plurality of supporting springs, a planetary gear ring is connected with a differential mechanism zero shaft through a transmission mechanism and is connected with an external circulation differential system, a brake oil cylinder is adopted as a driving component, oil is fed into the brake oil cylinder to drive a pressure plate to tightly press a first brake pad, the first brake pad (comprising a first static friction plate connected with a shell and a first dynamic friction plate connected with a first brake hub) brakes a first brake hub through friction force, the motor shaft is braked by the first brake hub, a motor shaft brakes a sun gear, the sun gear is transmitted to the output end of a planet carrier through a planetary gear train to brake wheels, at the moment, the thrust force applied to the pressure bearing piece by the brake oil cylinder, the pressure plate and the first brake pad is smaller than the back pressure spring force of the pressure bearing piece, the supporting springs are not deformed, at the double-pressure brake mechanism only plays a braking role on the motor shaft and does not play a role on the differential system of the wheels, so that a steering system of the vehicle is not influenced by braking, the vehicle can still be operated to steer, and the vehicle can be prevented from being out of control. When the brake cylinder further drives the pressure plate to press the first brake pad, the thrust force applied to the pressure-bearing piece by the brake cylinder, the pressure plate and the first brake pad is greater than the backpressure spring force of the pressure-bearing piece, the pressure-bearing piece is driven to press the second brake pad (the second brake pad comprises a second static friction plate connected with the shell and a second dynamic friction plate connected with a second brake hub), the second brake pad brakes the second brake hub, and the second brake hub brakes the shunting differential function of the planetary gear. At the moment, the planetary gear train is restrained by two, the wheels of the vehicle are completely braked, the risk that the wheels slide or rotate left and right due to the differential is prevented, and therefore the differential is braked to completely brake the wheels.
Preferably, two pressure braking controlling means still include the casing, be equipped with the spline on the bearing piece outer wall, the spline cooperates with casing inside wall, the bearing piece removes along the axis direction of drive shaft, saucer and casing fixed connection. The inner side wall of the shell is provided with a moving groove matched with a spline on the pressure-bearing part, and the pressure-bearing part can only move along the axis direction of the driving shaft, but does not rotate.
Preferably, the planetary reduction mechanism further comprises a planetary carrier, a planetary gear train rotatably arranged on the planetary carrier through a bearing, and a sun gear matched with the planetary gear train, wherein the sun gear is arranged at the output end of the driving shaft. The sun gear is transmitted to the output end of the planet gear carrier through the planet gear train and is output.
Preferably, the planetary gear ring comprises an internal gear matched with the planetary gear train and a differential gear connected with the internal gear, the outer side wall of the differential gear is provided with outer gear teeth used for connecting a zero shaft of the differential, and the differential gear is connected with the second brake hub. And the differential gear and the inner gear do not rotate, and the differential gear and the second brake hub do not rotate.
Preferably, the elastic reset assembly and the supporting spring are coaxially arranged, and the elastic reset assembly penetrates through the bearing part. Elasticity reset assembly includes the coil spring that uide pin, one end and uide pin are connected, coil spring's axis and supporting spring's axis level set up, elasticity reset assembly is the circumference according to the central axis of drive shaft and distributes, supporting spring is the circumference according to the central axis of bearing piece and distributes, in this scheme, the supporting spring cover is established on elasticity reset assembly.
Preferably, the driving shaft comprises a motor shaft of the driving motor and an output shaft coaxially arranged with the motor shaft, the sun gear is located at the output end of the output shaft, and the motor shaft and the output shaft are coupled through a first brake hub. The first brake hub and the second brake hub are coaxially arranged, and a gap exists between the inner wall of the second brake hub and the outer side wall of the driving shaft. So that the second brake hub and the drive shaft do not influence each other. The motor shaft, the output shaft and the first brake hub do not rotate pairwise.
Preferably, the driving assembly drives the pressure plate to overcome the elastic resetting assembly to press towards the direction of the first brake pad, at the moment, the thrust of the driving assembly pressing the pressure plate and the first brake pad on the pressure bearing piece is smaller than the back pressure of the pressure bearing piece, the supporting spring is not deformed, and the first brake pad brakes the driving shaft to brake the wheel preliminarily. The wheel is braked only by a motor shaft in the primary braking, the differential mechanism of the vehicle is not affected at the moment, the vehicle can still operate and steer, the differential mechanism is not affected at the positions of uneven road surfaces, slopes and other road surfaces, the wheel is prevented from being out of control, and the vehicle can be safely and stably stopped.
Preferably, the driving assembly continuously drives the pressure plate to press towards the direction of the second brake piece against the elastic resetting assembly, the thrust force of the driving assembly for pressing the pressure plate and the first brake piece onto the pressure bearing piece is larger than the back pressure of the pressure bearing piece, the pressure plate and the first brake piece drive the pressure bearing piece to press the second brake piece onto the pad plate against the supporting spring, the supporting spring deforms, the second brake piece brakes the planetary gear ring, the differential system is braked at the moment, and the wheel is completely braked. When the vehicle is stable, the wheels are completely braked, so that the wheels are prevented from sliding left and right due to the differential mechanism.
Therefore, the invention has the following beneficial effects: the brake control characteristic of a wet brake of the electric drive axle is improved, the brake torque and sequence time of dynamic braking and differential braking are controlled, the brake characteristic is improved, and the running safety of a vehicle is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of a first embodiment of the present invention.
Fig. 3 is a sectional view of a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 5 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 4.
Fig. 6 is a schematic structural view of a planetary reduction mechanism and a dual pressure braking mechanism in a second embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a pressure-bearing member according to a second embodiment of the present invention.
Fig. 8 is an exploded view of the planetary ring gear in the second embodiment of the present invention.
Fig. 9 is a partially enlarged view at B in fig. 5.
As shown in the figure:
a driving motor 1,
A planetary reduction mechanism 2, an internal gear 2.1, a differential gear 2.2, a planet carrier 2.3, a planetary gear train 2.4, a sun gear 2.5,
A zero shaft 3 of the differential mechanism,
The double-pressure brake mechanism 4, a pressure plate 4.1, a first brake block 4.2, a pressure bearing piece 4.3, a second brake block 4.4, a pad plate 4.5, an elastic reset component 4.6, a support spring 4.7, a first brake hub 4.8, a second brake hub 4.9,
A shell 5, a motor shaft 6 and an output shaft 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention is further described with reference to the accompanying drawings and the detailed description.
In a first embodiment, as shown in fig. 1 to 2, a dual-pressure brake control device includes a first brake hub 4.8 and a second brake hub 4.9 which are coaxially distributed, and further includes a driving assembly, a pressure plate 4.1, a first brake pad 4.2, a pressure-bearing piece 4.3, a second brake pad 4.4 and a pad 4.5 which are sequentially distributed along an axial direction of the first brake hub 4.8, an elastic return assembly 4.6 is arranged in front of the pressure plate 4.1 and the pad 4.5, a support spring 4.7 is arranged between the pressure-bearing piece 4.3 and the pad 4.5, the first brake pad 4.2 is sleeved on the first brake hub 4.8 for braking the first brake hub 4.8, and the second brake pad 4.4 is sleeved on the second brake pad 4.4 for braking the second brake hub 4.9. The scheme controls the braking of the two mechanisms through one double-pressure braking control device. In the prior art, the first brake hub 4.8 or the second brake hub 4.9 is arranged on the output shaft 7 or is sleeved on the output shaft 7, and the first brake hub 4.8 or the second brake hub 4.9 can be arranged on a clutch, a wet brake or coupled with a differential. According to the scheme, the brake control mechanisms of the two mechanisms are integrated on one device, the two mechanisms are braked in a segmented mode in a sequential control mode, for example, the first brake hub 4.8 is fixed on a driving shaft, the second brake hub 4.9 is sleeved on the driving shaft, and the second brake hub 4.9 is connected with a differential or a clutch through a rotating part, so that the dual-pressure brake control device in the scheme can perform segmented brake control, the first brake hub 4.8 is braked firstly, and then the second brake hub 4.9 is braked, the problem that no relevance exists between the mechanisms due to the fact that the associated mechanisms adopt independent brake control or simultaneous brake control in the existing vehicle is solved, another brake control device is omitted, the spatial arrangement of parts is simplified, and the occupied space of the parts is reduced.
Further, as shown, the bearing member 4.3 is sleeved outside the first brake hub 4.8 and the second brake hub 4.9. There is a gap between the inner circle of the pressure piece 4.3 and the outer side wall of the first brake hub 4.8 and a gap between the inner circle of the pressure piece 4.3 and the outer side wall of the second brake hub 4.9. The pressure-bearing part 4.3 is displaced in the direction of the drive shaft axis independently of the first 4.8 and second 4.9 brake hubs.
Embodiment two, a wet brake as shown in fig. 1 to 9, includes the dual-pressure brake control device of any one of the above claims, the dual-pressure brake control device includes a first brake hub 4.8 and a second brake hub 4.9 coaxially distributed, and further includes a driving assembly, a pressure plate 4.1, a first brake pad 4.2, a pressure-bearing member 4.3, a second brake pad 4.4 and a pad 4.5 sequentially distributed along an axial direction of the first brake hub 4.8, an elastic return assembly 4.6 is arranged in front of the pressure plate 4.1 and the pad 4.5, a support spring 4.7 is arranged between the pressure-bearing member 4.3 and the pad 4.5, the first brake pad 4.2 is sleeved on the first brake hub 4.8 for braking the first brake hub 4.8, and the second brake pad 4.4 is sleeved on the second brake pad 4.4 for braking the second brake hub 4.9; further comprising: the driving shaft is driven by the driving motor 1, the first brake hub 4.8 is fixedly arranged on the driving shaft, and the second brake hub 4.9 is sleeved on the driving shaft;
the planetary reduction mechanism 2 comprises a planetary gear ring, the planetary gear ring is connected with a zero shaft 3 of the differential mechanism, and a second brake hub 4.9 is connected with the planetary gear ring.
According to the wet brake in the embodiment, the pressure bearing piece 4.3 of the wet brake pad of the brake motor shaft 6 uses a plurality of support springs 4.7 as backpressure, the planetary gear ring is connected with the differential mechanism zero shaft 3 through the transmission mechanism and is connected with the external circulation differential system, the braking torque and sequence time of dynamic braking and differential braking are controlled, the braking control characteristic of the wet brake of the electric drive axle is improved, the braking characteristic is improved, and the driving safety of a vehicle is improved. The problem of among the prior art power braking and the differential braking of electric drive axle control simultaneously, the differential mechanism is braked simultaneously to the braking motor, the braking performance of vehicle is lower, the differential speed is braked and is easily caused the vehicle out of control during the braking is solved. The scheme is used for perfecting the brake control characteristic of the wet brake of the electric drive axle, and controlling the braking torque and sequence time of dynamic braking and differential braking, thereby improving the brake characteristic and improving the running safety of vehicles. In the scheme, a pressure bearing piece 4.3 of a wet brake pad of a brake motor shaft 6 is used as back pressure by a plurality of supporting springs 4.7, a planetary gear ring is connected with a zero shaft 3 of a differential mechanism through a transmission mechanism and is connected with an external circulation differential system, a driving assembly in the scheme adopts a brake oil cylinder, oil is fed into the brake oil cylinder to drive a pressure plate 4.1 to press a first brake pad 4.2, the first brake pad 4.2 (the first brake pad 4.2 comprises a first static friction plate connected with a shell 5 and a first dynamic friction plate connected with a first brake hub 4.8) brakes the first brake hub 4.8 through friction force, the first brake hub 4.8 brakes the motor shaft 6, the motor shaft 6 brakes the sun gear 2.5, the sun gear 2.5 is transmitted to the output end of the planet carrier 2.3 through the planetary gear train 2.4 to brake the wheel, at the moment, the thrust force exerted by the brake oil cylinder, the pressure plate 4.1 and the first brake piece 4.2 on the pressure bearing piece 4.3 is smaller than the back pressure spring force of the pressure bearing piece 4.3, the support spring 4.7 is not deformed, at the moment, the double-pressure brake mechanism 4 only plays a braking role on the motor shaft 6 and does not play a role on a differential system of the wheel, so a steering system of the vehicle is not influenced by braking, the vehicle can still operate and steer, and the vehicle can be prevented from being out of control. When the brake cylinder further drives the pressure plate 4.1 to press the first brake plate 4.2, the thrust force applied to the bearing piece 4.3 by the brake cylinder, the pressure plate 4.1 and the first brake plate 4.2 is greater than the back pressure spring force of the bearing piece 4.3, the bearing piece 4.3 is driven to press the second brake plate 4.4 (the second brake plate 4.4 comprises a second static friction plate connected with the shell 5 and a second dynamic friction plate connected with a second brake hub 4.9), the second brake plate 4.4 brakes the second brake hub 4.9, and the second brake hub 4.9 brakes the split differential function of the planetary gear. At the moment, the planetary gear train 2.4 is restrained by two, the wheels of the vehicle are completely braked, the risk that the wheels slide or rotate left and right due to a differential is prevented, and therefore the differential is braked to completely brake the wheels.
A first state: the driving assembly drives the pressure plate 4.1 to overcome the elastic reset assembly 4.6 to compress towards the direction of the first brake block 4.2, the thrust of the driving assembly pressing the pressure plate 4.1 and the first brake block 4.2 on the pressure-bearing piece 4.3 is smaller than the back pressure of the pressure-bearing piece 4.3, the supporting spring 4.7 is not deformed, and the wheel of the first brake block 4.2 braking driving shaft is preliminarily braked. The wheel is braked only by the motor shaft 6 primarily, the differential mechanism of the vehicle is not affected at the moment, the vehicle can still operate and steer, the differential mechanism is not affected at the road surfaces such as uneven road surfaces, slopes and the like, the wheel is prevented from being out of control, and the vehicle can be safely and stably stopped.
And a second state: the driving assembly continues to drive the pressure plate 4.1 to overcome the elastic resetting assembly 4.6 to press towards the direction of the second brake piece 4.4, at the moment, the thrust of the driving assembly pressing the pressure plate 4.1 and the first brake piece 4.2 on the pressure-bearing piece 4.3 is larger than the back pressure of the pressure-bearing piece 4.3, the pressure plate 4.1 and the first brake piece 4.2 drive the pressure-bearing piece 4.3 to overcome the supporting spring 4.7 to press the second brake piece 4.4 on the backing plate 4.5, the supporting spring 4.7 deforms, the second brake piece 4.4 brakes the planetary gear ring, at the moment, the differential system is braked, and the wheel is completely braked. When the vehicle is stable, the wheels are completely braked, so that the wheels are prevented from sliding left and right due to the differential mechanism.
Further, as shown in fig. 1 and 3, the bearing member 4.3 is sleeved on the outer side of the first brake hub 4.8 and the second brake hub 4.9. There is a gap between the inner circle of the pressure piece 4.3 and the outer side wall of the first brake hub 4.8 and a gap between the inner circle of the pressure piece 4.3 and the outer side wall of the second brake hub 4.9. The pressure-bearing part 4.3 is displaced in the direction of the drive shaft axis independently of the first 4.8 and second 4.9 brake hubs.
Further, as shown in fig. 3, the dual-pressure brake control device further includes a housing 5, a spline is disposed on an outer wall of the pressure-bearing member 4.3, the spline is engaged with an inner side wall of the housing 5, the pressure-bearing member 4.3 moves along an axial direction of the driving shaft, and the pad 4.5 is fixedly connected to the housing 5. The inner side wall of the shell 5 is provided with a moving groove matched with the spline on the pressure-bearing part 4.3, the pressure-bearing part 4.3 can only move along the axial direction of the driving shaft, but the pressure-bearing part 4.3 does not rotate.
Further, as shown in fig. 6, the planetary reduction mechanism 2 further includes a planetary carrier 2.3, a planetary gear train 2.4 rotatably disposed on the planetary carrier 2.3 through a bearing, and a sun gear 2.5 engaged with the planetary gear train 2.4, the sun gear 2.5 being disposed at an output end of the drive shaft. The sun gear 2.5 is transmitted to the output end of the planet gear carrier through the planet gear train 2.4 to be output. The planetary gear ring comprises an internal gear 2.1 matched with the planetary gear train 2.4 and a differential gear 2.2 connected with the internal gear 2.1, outer gear teeth used for connecting a zero shaft 3 of the differential mechanism are arranged on the outer side wall of the differential gear 2.2, and the differential gear 2.2 is connected with a second brake hub 4.9. The differential gear 2.2 and the internal gear 2.1 do not rotate, and the differential gear 2.2 and the second brake hub 4.9 do not rotate.
Further, as shown in fig. 9, the elastic return assembly 4.6 and the supporting spring 4.7 are coaxially arranged, and the elastic return assembly 4.6 passes through the bearing member 4.3. Elasticity reset assembly 4.6 includes uide pin, the coil spring that one end and uide pin are connected, and coil spring's axis and supporting spring 4.7's axis level set up, and elasticity reset assembly 4.6 is the circumference according to the central axis of drive shaft and distributes, and supporting spring 4.7 is the circumference according to the central axis of bearing part 4.3 and distributes, and in this scheme, supporting spring 4.7 cover is established on elasticity reset assembly 4.6.
Further, as shown in fig. 3 and 5, the driving shaft includes a motor shaft 6 of the driving motor 1, and an output shaft 7 coaxially disposed with the motor shaft 6, the sun gear 2.5 is located at an output end of the output shaft 7, and the motor shaft 6 is coupled with the output shaft 7 through a first brake hub 4.8. The first brake hub 4.8 and the second brake hub 4.9 are arranged coaxially, and a gap exists between the inner wall of the second brake hub 4.9 and the outer side wall of the drive shaft. So that the second brake hub 4.9 and the drive shaft do not interfere with each other. The motor shaft 6, the output shaft 7 and the first brake hub 4.8 do not rotate pairwise.
The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereby. All equivalent changes in the shape and structure of the present invention are also intended to be included within the scope of the present invention.
Claims (10)
1. The double-pressure brake control device comprises a first brake hub and a second brake hub which are coaxially distributed, and is characterized by further comprising a driving assembly, a pressure plate, a first brake piece, a pressure bearing piece, a second brake piece and a pad disc which are sequentially distributed along the axis direction of the first brake hub, wherein an elastic reset assembly is arranged in front of the pressure plate and the pad disc, a supporting spring is arranged between the pressure bearing piece and the pad disc, the first brake piece is sleeved on the first brake hub and used for braking the first brake hub, and the second brake piece is sleeved on the second brake piece and used for braking the second brake hub.
2. The dual pressure brake control device according to claim 1, wherein the pressure receiving member is fitted over the outer sides of the first and second brake hubs.
3. A wet brake comprising the dual pressure brake control device of any one of claims 1-2, further comprising:
the driving shaft is driven by a driving motor, the first brake hub is fixedly arranged on the driving shaft, and the second brake hub is sleeved on the driving shaft;
the planetary speed reducing mechanism comprises a planetary gear ring, the planetary gear ring is connected with a zero shaft of the differential mechanism, and the second brake hub is connected with the planetary gear ring.
4. The wet brake of claim 3, wherein the dual pressure brake control device further comprises a housing, wherein the outer wall of the pressure-bearing member is provided with splines, the splines are engaged with the inner wall of the housing, the pressure-bearing plate moves along the axial direction of the driving shaft, and the pad is fixedly connected to the housing.
5. The wet brake of claim 3, wherein the planetary reduction mechanism further comprises a planetary carrier, a planetary gear train rotatably disposed on the planetary carrier through a bearing, and a sun gear engaged with the planetary gear train, the sun gear being disposed at an output end of the drive shaft.
6. The wet brake of claim 5, wherein the planetary gear ring comprises an internal gear engaged with the planetary gear train and a differential gear connected with the internal gear, an external gear for connecting a zero shaft of the differential gear is arranged on an outer side wall of the differential gear, and the differential gear is connected with the second brake hub.
7. A wet brake as claimed in claim 3, wherein said resilient return member and said support spring are coaxially disposed, said resilient return member passing through said bearing member.
8. A wet brake as claimed in claim 5, 6 or 7, wherein the drive shaft includes a motor shaft for driving the motor, an output shaft disposed coaxially with the motor shaft, the sun gear is disposed at an output end of the output shaft, and the motor shaft and the output shaft are coupled through the first brake hub.
9. A wet brake as claimed in claim 3, 4, 5, 6 or 7, wherein the drive unit drives the pressure plate against the resilient return unit in the direction of the first brake pad, and the drive unit presses the pressure plate and the first brake pad against the pressure plate with a thrust force smaller than the back pressure of the pressure plate, the support spring is not deformed, and the first brake pad brakes the driving axle wheel.
10. A wet brake as claimed in claim 9, wherein the drive unit continues to drive the pressure plate against the resilient return unit towards the second brake pad, the drive unit applying a greater thrust force against the pressure plate than the back pressure against the pressure plate, the pressure plate and the first brake pad driving the pressure plate against the support spring to apply the second brake pad against the backing plate, the support spring deforming, the second brake pad braking the planet gear ring, the differential system being braked and the wheel being fully braked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211328949.5A CN115750622A (en) | 2022-10-27 | 2022-10-27 | Double-pressure brake control device and wet brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211328949.5A CN115750622A (en) | 2022-10-27 | 2022-10-27 | Double-pressure brake control device and wet brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115750622A true CN115750622A (en) | 2023-03-07 |
Family
ID=85354138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211328949.5A Pending CN115750622A (en) | 2022-10-27 | 2022-10-27 | Double-pressure brake control device and wet brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115750622A (en) |
-
2022
- 2022-10-27 CN CN202211328949.5A patent/CN115750622A/en active Pending
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