CN211175258U - Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving - Google Patents
Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving Download PDFInfo
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- CN211175258U CN211175258U CN201921550878.7U CN201921550878U CN211175258U CN 211175258 U CN211175258 U CN 211175258U CN 201921550878 U CN201921550878 U CN 201921550878U CN 211175258 U CN211175258 U CN 211175258U
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Abstract
The utility model discloses a can realize driving auxiliary reduction brake and parking brake's reduction gear assembly, its characteristics are, by the main cone nut, initiative bevel gear, flange, belleville spring, compress tightly piston, movable piston, fixed piston, braking stator, brake rotor, backing ring, bearing frame, outer bearing, inner bearing, driven bevel gear, differential mechanism assembly, differential mechanism left side semi-axis wheel, differential mechanism right side semi-axis wheel and reduction gear casing constitute; high-pressure oil is injected or released into a high-pressure sealing cavity between the movable piston and the fixed piston through a piston oil port, so that the normal speed reduction function of the drive axle reducer assembly, the auxiliary speed reduction braking function during driving and the parking braking function during parking of the whole vehicle are realized.
Description
The technical field is as follows:
the utility model relates to a technical field such as car axle, engineering machine tool axle and gear reducer, specifically say that a can realize driving supplementary speed reduction and parking braking's reduction gear assembly.
Background art:
the automobile axle or the engineering machinery axle is provided with braking systems on two sides of the axle, and the braking systems have the function of enabling the automobile or the engineering machinery to run at a proper deceleration speed reduction speed until the automobile or the engineering machinery is stopped when needed; the method comprises the following steps of keeping a vehicle or engineering machinery at a proper stable speed when the vehicle or the engineering machinery runs on a downhill; the vehicle is reliably parked on the spot or on the slope. The system is generally provided with a service braking device and a parking braking device, but in some market segments, the whole vehicle adopts a wheel-side hydraulic braking mode according to the braking performance requirement, or explosion prevention or total arrangement requirement, and part of hydraulic brakes can not be arranged with the parking braking device due to space and structure limitation, so that the parking braking of the whole vehicle is difficult to realize.
The utility model has the following contents:
the utility model aims at overcoming the not enough of above-mentioned prior art, and provide a reduction gear assembly that can realize driving supplementary speed reduction and parking braking.
The utility model provides a technical scheme is: a speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving is characterized by comprising a driving bevel gear, a flange, a disc spring, a pressing piston, a movable piston, a fixed piston, a braking stator, a braking rotor, a backing ring, a bearing seat, a driven bevel gear, a differential assembly, a differential left half axle wheel, a differential right half axle wheel and a speed reducer shell;
the driving bevel gear and the driven bevel gear are a pair of meshing gear pairs, the driving bevel gear is supported on the bearing seat, the driving bevel gear is connected with the flange through a spline, and the driving bevel gear and the flange are fixedly connected into a whole; the brake moving piece is in splined connection with the flange, moves axially along the flange and is limited in the circumferential direction, a gap is reserved between the brake moving piece and the bearing seat, the brake moving piece and the bearing seat rotate relatively, and the flange drives the brake moving piece to rotate relative to the bearing seat; the braking static sheet is connected with the bearing seat and limited in the circumferential direction, the braking static sheet axially moves along the bearing seat and is limited in the axial direction through the backing ring, and a gap is reserved between the braking static sheet and the flange and the braking static sheet relatively rotates; the backing ring is arranged in a step hole of the bearing seat, bears the axial force generated when the brake moving plate and the brake static plate brake and limits the position, and the backing ring is in clearance fit with the bearing seat and the flange respectively; the fixed piston is respectively matched with the bearing seat and the compression piston, and radial sealing of the inner diameter and the outer diameter is realized through an O-shaped sealing ring and an anti-compression ring; the movable piston is respectively matched with the bearing seat and the compression piston, radial sealing of the inner diameter and the outer diameter is realized through an O-shaped sealing ring and an anti-compression ring, and the movable piston moves along the axial direction; a high-pressure sealing cavity is formed between the movable piston and the fixed piston; a plurality of friction pairs are formed by the static braking sheets and the dynamic braking sheets, so that the functions of speed reduction and parking braking are realized; the pressing piston is respectively matched with the flange, the movable piston and the fixed piston and moves along the axial direction; the pressing piston realizes radial sealing with the flange through an O-shaped sealing ring; the inner diameter of the disc spring is in clearance fit with the flange, the outer diameter of the disc spring is in clearance fit with the pressing piston, one side of the disc spring is pressed on the flange, the other side of the disc spring is pressed on the pressing piston, the disc spring can axially move and compress under the action of the pressing piston and store energy, the spring energy can also be released, and the static braking piece and the dynamic braking piece are pressed by the pressing piston to generate friction braking force; the bearing seat and the reducer shell are solidified into a whole; the driven bevel gear is fixedly connected with the differential assembly into a whole; the torque transmitted by the engine is transmitted to the driven bevel gear through the driving bevel gear and is transmitted to the left wheel and the right wheel through the left half-axle wheel and the right half-axle wheel of the differential; high-pressure oil is input or released to the high-pressure sealing cavity, so that the running of the whole vehicle, the auxiliary speed reduction of the whole vehicle and the parking brake of the whole vehicle are realized.
Furthermore, the whole vehicle running is characterized in that high-pressure oil is input into the high-pressure sealing cavity, the movable piston pushes the pressing piston to enable the disc spring to generate deformation energy storage, meanwhile, a braking gap is generated between the pressing piston and the braking stator, and the pressing braking of the pressing piston on the braking stator and the braking rotor is removed, so that the driving bevel gear can freely rotate relative to the bearing seat, the speed reduction driving function of a drive axle is realized, and the normal running of the whole vehicle is further realized.
Furthermore, the auxiliary speed reduction of the whole automobile is realized by releasing high-pressure oil in the high-pressure sealed cavity, controlling the magnitude of spring force released by the disc spring through controlling the oil pressure, pressing the piston to push the movable piston until the pressing piston presses the braking static sheet and the braking dynamic sheet together under the action of the spring force of the disc spring, eliminating the braking gap, and realizing the speed reduction braking function of the driving bevel gear under the action of the multi-friction pair friction force of the braking static sheet and the braking dynamic sheet.
Furthermore, the parking brake of the whole automobile releases the stored energy of the disc spring by releasing high-pressure oil in the high-pressure sealing cavity, the piston is pressed under the action of the spring force of the disc spring to push the movable piston until the pressing piston presses the braking static sheet and the braking dynamic sheet together, the braking gap is eliminated, the driving bevel gear and the main bevel bearing seat are solidified together under the action of friction force, the main bevel bearing seat is solidified together with the drive axle reducer shell through the bolt, and the further driving bevel gear is solidified together with the reducer shell.
The utility model has the advantages that: 1. when high-pressure hydraulic oil is injected into the high-pressure sealing cavity through the piston oil way interface, the disc spring is compressed to store energy, the compression piston releases the compression braking force of the brake static sheet and the brake dynamic sheet, the driving bevel gear can freely rotate, and the speed reducer assembly realizes the normal speed reduction driving function; 2. when high-pressure hydraulic oil in the high-pressure sealing cavity is released, the spring force of the disc spring is released, the pressing piston axially presses the braking static sheet and the braking dynamic sheet to generate friction force so as to generate braking force, and the deceleration of the driving bevel gear is controlled by adjusting the magnitude of the released oil pressure until the parking function of the whole vehicle during parking is realized; 3. the auxiliary speed reduction and parking brake functions of the running are realized on the speed reducer assembly, and the parking problem that the whole vehicle is matched with a hydraulic brake is solved.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged fragmentary view of FIG. 1 (service no-brake condition);
FIG. 4 is an enlarged view of a portion of FIG. 1 (an auxiliary braking state or a parking braking state);
FIG. 5 is a schematic structural view of the brake pad of the present invention;
FIG. 6 is a schematic structural view of the brake stator and the external locking key of the present invention;
fig. 7 is a front view of the bearing seat of the present invention;
FIG. 8 is a sectional view taken along line B-B of the bearing housing of the present invention;
fig. 9 is a schematic view of the structure of the flange of the present invention.
In the figure: the device comprises a main cone nut 1, a driving bevel gear 2, a flange 3, a disc spring 4, a pressing piston 5, a movable piston 6, a fixed piston 7, a static braking sheet 8, a braking sheet 9, a backing ring 10, a bearing seat 11, an outer bearing 12, an inner bearing 13, a driven bevel gear 15, a differential assembly 16, a differential left half shaft wheel 17, a differential right half shaft wheel 18, a reducer shell 19, a first O-shaped sealing ring 21, a second O-shaped sealing ring 22, a third O-shaped sealing ring 23, a fourth O-shaped sealing ring 24, a first compression resisting ring 25, a second compression resisting ring 26, a third compression resisting ring 27, a fourth compression resisting ring 28, a fifth O-shaped sealing ring 29, an outer groove locking key 31 and a locking key 32.
The specific implementation mode is as follows:
for a better understanding and an implementation, the following detailed description of the embodiments is given in conjunction with the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, a speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving comprises a main cone nut 1, a driving bevel gear 2, a flange 3, a disc spring 4, a pressing piston 5, a movable piston 6, a fixed piston 7, a brake stator 8, a brake rotor 9, a backing ring 10, a bearing seat 11, an outer bearing 12, an inner bearing 13, a driven bevel gear 15, a differential assembly 16, a differential left half axle wheel 17, a differential right half axle wheel 18 and a speed reducer shell 19;
the driving bevel gear 2 and the driven bevel gear 15 are a pair of meshing gear pairs, the driving bevel gear 2 is supported on the bearing seat 11 through an inner bearing 13 and an outer bearing 12, and the driving bevel gear 2 is connected with the inner spline of the flange 3 through an outer spline on a gear shaft; the fixed piston 7 is respectively matched with the bearing seat 11 and the pressing piston 5 through a unthreaded hole and an optical axis, and radial sealing of the inner diameter and the outer diameter is realized through a second O-shaped sealing ring 22, a fourth O-shaped sealing ring 24, a second compression resisting ring 26 and a fourth compression resisting ring 28; the movable piston 6 is respectively matched with the bearing seat 11 and the pressing piston 5 through a unthreaded hole and an optical axis, radial sealing of inner diameter and outer diameter is realized through a first O-shaped sealing ring 21, a third O-shaped sealing ring 23, a first compression ring 25 and a third compression ring 27, the movable piston 6 moves along the axial direction, and a high-pressure sealing cavity A is formed between the movable piston 6 and the fixed piston 7; the three brake static sheets 8 are connected with the stop key inner grooves 32 at 4 positions of the bearing seat 11 through the outer stop keys 31 at 4 positions, the three brake static sheets 8 can axially move along the stop key inner grooves of the bearing seat 11, the circumferential direction is limited, the axial limitation is realized through the backing ring 10, and a gap is reserved between the brake static sheets 8 and the flange 3, so that the relative rotation can be realized; two movable plates 9 are connected with the outer spline of the flange 3 through the inner spline, can axially move along the outer spline, are limited in the circumferential direction, have a gap between the movable brake plates 9 and the bearing seat 11, can relatively rotate, and the flange 3 drives the movable brake plates 9 to rotate relative to the bearing seat 11; the backing ring 10 is placed in a step hole of the bearing seat 11, bears the axial force generated when the brake movable plate 9 and the brake static plate 8 brake and limits the position, and the backing ring 10 is in clearance fit with the bearing seat 11 and the flange 3 through the unthreaded hole and the optical axis respectively; the pressing piston 5 is matched with the flange 3, the movable piston 6 and the fixed piston 7 through the unthreaded hole and the optical axis respectively, the pressing piston 5 rotates relative to the flange 3 and the movable piston 6 and can move along the axial direction, and the pressing piston 5 realizes radial sealing with the flange 3 through a fifth O-shaped sealing ring 29; the inner diameter of a disc spring 4 is in clearance fit with a flange 3, the outer diameter of the disc spring 4 is in clearance fit with a pressing piston 5, one side of the disc spring 4 is pressed on the flange 3, and the other side of the disc spring is pressed on the pressing piston 5, so that the disc spring can axially move, compress and store energy under the action of the pressing piston 5, and release the stored energy to press a static sheet 8 and a brake dynamic sheet 9 through the pressing piston 5 to generate friction braking force; the bearing seat 11 is solidified into a whole with the reducer shell 19 through bolts; then the driving bevel gear 2 and the flange 3 are fixedly connected into a whole through the main cone nut 1; fixedly connecting a driven bevel gear 15 with a differential assembly 16 into a whole through bolts; the torque transmitted by the engine is transmitted to the driven bevel gear 15 through the driving bevel gear 2 and transmitted to left and right wheels through a differential left half axle wheel 17 and a differential right half axle wheel 18; a plurality of friction pairs are formed by three brake static sheets 8 and two brake dynamic sheets 9, and the functions of vehicle deceleration and parking brake are realized.
The utility model discloses a can realize driving auxiliary speed reduction and parking braking's reduction gear assembly, the theory of operation as follows:
when the whole vehicle is running: high-pressure oil is input into the high-pressure sealing cavity, the movable piston pushes the pressing piston to enable the disc spring to generate deformation energy storage, meanwhile, a braking gap is generated between the pressing piston and the static sheet, and the pressing braking of the pressing piston on the braking static sheet and the braking dynamic sheet is relieved, so that the driving bevel gear can freely rotate relative to the bearing seat, the speed reduction driving function of a drive axle is realized, and the normal running function of the whole vehicle is further realized;
when the whole vehicle assists in decelerating and braking: the magnitude of the spring force released by the disc spring is controlled by releasing high-pressure oil in the high-pressure sealing cavity and further controlling the oil pressure, the pressing piston pushes the movable piston until the pressing piston presses the braking static sheet and the braking dynamic sheet together under the action of the spring force of the disc spring, the braking gap is eliminated, and the deceleration braking function of the driving bevel gear is realized under the action of the friction force of multiple friction pairs of the braking static sheet and the braking dynamic sheet;
when the parking brake of the whole vehicle is performed: the disc spring energy storage is released by releasing high-pressure oil in the high-pressure sealing cavity, the pressing piston pushes the movable piston under the action of the spring force of the disc spring until the pressing piston presses the braking stator and the braking rotor together, the braking gap is eliminated, the driving bevel gear and the main bevel bearing seat are solidified together under the action of friction force, the main bevel bearing seat is solidified together with the drive axle reducer shell through a bolt, and the further driving bevel gear is solidified together with the reducer shell.
It should be understood that technical features not described in detail in the specification belong to the prior art. The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (1)
1. A speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving is characterized by comprising a driving bevel gear (2), a flange (3), a disc spring (4), a pressing piston (5), a movable piston (6), a fixed piston (7), a braking stator (8), a braking rotor (9), a backing ring (10), a bearing seat (11), a driven bevel gear (15), a differential assembly (16), a differential left half-axle wheel (17), a differential right half-axle wheel (18) and a speed reducer shell (19);
the driving bevel gear (2) and the driven bevel gear (15) are a pair of meshing gear pairs, the driving bevel gear (2) is supported on the bearing seat (11), the driving bevel gear (2) is in spline connection with the flange (3), and the driving bevel gear and the flange are fixedly connected into a whole; the brake moving plate (9) is in splined connection with the flange (3), the brake moving plate (9) moves axially along the flange (3) and is limited in the circumferential direction, a gap is reserved between the brake moving plate (9) and the bearing seat (11) and rotates relatively, and the flange (3) drives the brake moving plate (9) to rotate relative to the bearing seat (11); the braking static sheet (8) is connected with the bearing seat (11) and limited in the circumferential direction, the braking static sheet (8) axially moves along the bearing seat (11) and is limited in the axial direction through the backing ring (10), and a gap is reserved between the braking static sheet (8) and the flange (3) and the braking static sheet and the flange rotate relatively; the backing ring (10) is arranged in a step hole of the bearing seat, bears the axial force generated when the brake moving plate (9) and the brake static plate (8) brake and limits the position, and the backing ring (10) is in clearance fit with the bearing seat (11) and the flange (3) respectively; the fixed piston (7) is respectively matched with the bearing seat (11) and the pressing piston (5), and radial sealing of the inner diameter and the outer diameter is realized through an O-shaped sealing ring and an anti-compression ring; the movable piston (6) is respectively matched with the bearing seat (11) and the pressing piston (5), radial sealing of the inner diameter and the outer diameter is realized through an O-shaped sealing ring and an anti-compression ring, and the movable piston (6) moves along the axial direction; a high-pressure sealing cavity (A) is formed between the movable piston (6) and the fixed piston (7); a plurality of friction pairs are formed by the static braking sheets (8) and the dynamic braking sheets (9) to realize the functions of speed reduction and parking braking; the pressing piston (5) is respectively matched with the flange (3), the movable piston (6) and the fixed piston (7) and moves along the axial direction; the pressing piston (5) realizes radial sealing with the flange (3) through an O-shaped sealing ring; the inner diameter of the disc spring (4) is in clearance fit with the flange (3), the outer diameter of the disc spring is in clearance fit with the pressing piston (5), one side of the disc spring (4) is pressed on the flange (3), one side of the disc spring is pressed on the pressing piston (5), the disc spring can axially move and compress and store energy under the action of the pressing piston (5), the spring energy can also be released, and the braking static sheet (8) and the braking dynamic sheet (9) are pressed by the pressing piston (5) to generate friction braking force; the bearing seat (11) and the reducer shell (19) are solidified into a whole; the driven bevel gear (15) and the differential assembly (16) are fixedly connected into a whole; the torque transmitted by the engine is transmitted to a driven bevel gear (15) through a driving bevel gear (2) and transmitted to left and right wheels through a differential left half shaft wheel (17) and a differential right half shaft wheel (18); high-pressure oil is input or released into the high-pressure sealing cavity (A), so that the running of the whole vehicle, the auxiliary speed reduction of the whole vehicle and the parking brake of the whole vehicle are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921550878.7U CN211175258U (en) | 2019-09-18 | 2019-09-18 | Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921550878.7U CN211175258U (en) | 2019-09-18 | 2019-09-18 | Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving |
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| Publication Number | Publication Date |
|---|---|
| CN211175258U true CN211175258U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921550878.7U Active CN211175258U (en) | 2019-09-18 | 2019-09-18 | Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617313A (en) * | 2019-09-18 | 2019-12-27 | 山东蓬翔汽车有限公司 | Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving |
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2019
- 2019-09-18 CN CN201921550878.7U patent/CN211175258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617313A (en) * | 2019-09-18 | 2019-12-27 | 山东蓬翔汽车有限公司 | Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking during driving |
| CN110617313B (en) * | 2019-09-18 | 2024-06-04 | 山东蓬翔汽车有限公司 | Speed reducer assembly capable of realizing auxiliary speed reduction and parking braking of driving |
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