CN220163844U - Light bus axle adopting wedge brake - Google Patents
Light bus axle adopting wedge brake Download PDFInfo
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- CN220163844U CN220163844U CN202320255516.5U CN202320255516U CN220163844U CN 220163844 U CN220163844 U CN 220163844U CN 202320255516 U CN202320255516 U CN 202320255516U CN 220163844 U CN220163844 U CN 220163844U
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- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 230000009471 action Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of automobile chassis, and provides a light bus axle adopting a wedge brake, which comprises a speed reducer, an axle housing, a first half axle, a first brake drum, a first hub assembly and a first wedge brake; the speed reducer is arranged on the tooth pack section of the axle housing; two ends of the first half shaft are respectively connected with the speed reducer and the first hub assembly; the first hub assembly is sleeved on the outer surface of the axle housing, the first brake drum is coaxially connected with the first hub assembly, and the first brake drum can rotate along with the first hub assembly; the first wedge brake is connected to the mounting plate of the axle housing, and an outer surface of the first wedge brake is mated with an inner surface of the first brake drum. The passenger car axle reduces unsprung mass of a passenger car vehicle and improves dynamic property, economy, smoothness and comfort of the passenger car vehicle; the directional stability of the passenger car is improved when the passenger car is braked; the transmission chain of the braking system is shortened, and the transmission efficiency is improved; the assembly and disassembly are convenient and quick, and the maintenance efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of automobile chassis, in particular to a light bus axle adopting a wedge brake.
Background
Along with the continuous enhancement of urban infrastructure, china gradually builds a road traffic network which is all around, and the arrangement and the configuration are relatively reasonable and perfect, so that the rapid increase of the quantity of buses in China is greatly stimulated. Modern passenger cars are designed by fully considering social adaptability and humanity care, requirements on excellent performance of the passenger cars are higher and higher, and an axle is one of main parts on the passenger cars, plays a role in supporting load of the passenger cars and transmits load to wheels.
In summary, the utility model provides a novel light bus axle adopting a wedge brake.
Disclosure of Invention
Based on the expression, the utility model provides the light bus axle adopting the wedge brake, so that the modern bus axle is improved, and the performances of the bus such as dynamic property, economy, smoothness and comfort are improved.
The technical scheme for solving the technical problems is as follows:
the utility model provides a light bus axle adopting a wedge brake, which comprises the following components: the device comprises a speed reducer, an axle housing, a first half axle, a first brake drum, a first hub assembly and a first wedge brake;
the speed reducer is arranged on the tooth pack section of the axle housing;
the two ends of the first half shaft are respectively connected with the speed reducer and the hub assembly;
the first hub assembly is sleeved on the outer surface of the axle housing, the first brake drum is coaxially connected with the first hub assembly, and the first brake drum can rotate along with the first hub assembly;
the first wedge brake is connected to the mounting plate of the axle housing, and the outer surface of the first wedge brake is matched with the inner surface of the first brake drum.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, one end of the first half shaft penetrates through the axle housing to be connected with the speed reducer, and the other end of the first half shaft is detachably mounted on the hub assembly.
Further, the first wedge brake comprises an air chamber brake cylinder assembly, a wedge block assembly, a friction component, a brake component and a brake bottom plate;
the bottom plate is connected to the mounting plate, and the brake assembly, the wedge block assembly and the air chamber brake cylinder assembly are all arranged on the bottom plate;
the friction assembly is arranged on the outer wall surface of the braking assembly, the wedge block assembly is connected with the braking assembly, the air chamber braking cylinder assembly is connected with the wedge block assembly, and the wedge block assembly can control the action of the braking assembly under the action of the air chamber braking cylinder assembly.
Further, the brake assembly comprises a first brake shoe, a second brake shoe, a first shoe shaft and a second shoe shaft;
the first brake shoe and the second brake shoe are respectively and pivotally connected with the bottom plate through the first shoe shaft and the second shoe shaft; under the action of the air chamber brake cylinder assembly, the wedge block assembly can drive the first brake shoe and the second brake shoe to open so that the friction component presses the first brake drum to generate friction moment.
Further, the first wedge brake further comprises an elastic member;
and two ends of the elastic piece are respectively connected with the first brake shoe and the second brake shoe.
Further, the friction assembly comprises a first friction piece and a second friction piece;
the inner surface of the first friction piece is matched with the outer surface of the first brake shoe, and the inner surface of the second friction piece is matched with the outer surface of the second brake shoe.
Further, the wedge block assembly comprises a wedge rod and a piston;
the two ends of the wedge rod are respectively connected with the piston and the air chamber brake cylinder assembly, and under the action of the air chamber brake cylinder assembly, the wedge rod can push the piston to move so as to drive the brake assembly to open.
Further, the wedge assembly further comprises a clearance self-adjusting mechanism;
the clearance self-adjusting mechanism is used for adjusting the clearance between the braking component and the friction component.
Further, the light bus axle adopting the wedge brake further comprises a second half axle, a second brake drum, a second hub assembly and a second wedge brake;
the second half shaft, the second brake drum, the second hub assembly and the second wedge brake are respectively and symmetrically distributed with the first half shaft, the first brake drum, the first hub assembly and the first wedge brake with respect to the central axis of the axle housing.
Further, the axle housing is a housing structure formed by splicing and welding an upper half housing and a lower half housing; the upper half shell and the lower half shell comprise the tooth packet section and a straight line section; the mounting plate is arranged on the outer wall side of the straight line section.
Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:
according to the light bus axle adopting the wedge brake, the speed reducer, the axle housing, the first half axle, the first brake drum, the first hub assembly and the first wedge brake are arranged, when in transmission, the transmission shaft of the whole bus transmits power to the speed reducer, the speed reducer transmits the power to the first hub assembly by means of the first half axle, and the wheels are connected with the hub assembly through bolts, so that the wheels are driven to rotate, and the vehicle is driven to run; during braking, the first wedge brake is capable of compressing the first brake drum to generate a friction torque and transmitting the friction torque to the first hub assembly and the wheel, thereby decelerating or parking the vehicle. Compared with the prior art, the light bus axle adopting the wedge brake has the following advantages:
1. compared with the traditional cam type brake with the same specification, the wedge type brake adopted by the bus axle has lighter weight, can reduce the importance of the whole axle, obviously reduces the unsprung mass of the bus vehicle, and effectively improves the dynamic property, economy, smoothness and comfort of the bus vehicle;
2. compared with the traditional cam type brake with the same specification, the wedge type brake can improve the braking efficiency, effectively improve the reliability of the passenger car during braking, and can also ensure that the pressures at two sides of the brake drum are equal, so that the braking gaps of the left wheel and the right wheel are the same, the braking force distribution of the left wheel and the right wheel is balanced, and the directional stability of the passenger car during braking is improved;
3. the wedge brake that this passenger train axle adopted simple structure compares traditional cam brake with the specification, and braking system's drive chain has shortened, and transmission efficiency can obtain effectively improving, has saved whole car air supply, has improved the efficiency of passenger train engine, and in addition, its assembly and dismantlement are convenient and fast more, have improved maintenance efficiency.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a light bus axle using wedge brakes according to an embodiment of the present utility model;
FIG. 2 is a schematic structural view of a first wedge brake according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a wedge assembly according to an embodiment of the present utility model;
in the drawings, the list of components represented by the various numbers is as follows:
1. a speed reducer;
2. a bridge housing; 21. a tooth pack section; 22. a straight line segment;
3. a first half shaft;
4. a first brake drum;
5. a first hub assembly;
6. a first wedge brake; 61. an air chamber brake cylinder assembly; 62. a wedge assembly; 621. a wedge rod; 622. a piston; 623. a gap self-adjusting mechanism; 63. a friction assembly; 631. a first friction member; 632. a second friction member; 64. a brake assembly; 641. a first brake shoe; 642. a second brake shoe; 643. a first shoe shaft; 644. a second shoe shaft; 65. a brake pad; 66. an elastic member;
7. a second brake drum;
8. a second hub assembly;
9. a second wedge brake.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Embodiments of the utility model are illustrated in the accompanying drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Embodiments of the present utility model will be described in further detail with reference to fig. 1 to 3 and examples, which are provided to illustrate the present utility model but not to limit the scope of the present utility model.
As shown in fig. 1, an embodiment of the present utility model provides a lightweight passenger vehicle axle employing a wedge brake, comprising: a speed reducer 1, an axle housing 2, a first half shaft 3, a first brake drum 4, a first hub assembly 5 and a first wedge brake 6.
The speed reducer 1 is arranged on a tooth pack section 21 of the axle housing 2, and two ends of the first half shaft 3 are respectively connected with the speed reducer 1 and the hub assembly.
The first hub assembly 5 is sleeved on the outer surface of the axle housing 2, the first brake drum 4 is coaxially connected with the first hub assembly 5, and the first brake drum 4 can rotate along with the first hub assembly 5.
The first wedge brake 6 is connected to the mounting plate of the axle housing 2, the outer surface of the first wedge brake 6 being adapted to the inner surface of the first brake drum 4.
One end of the first half shaft 3 penetrates through the axle housing 2 to be connected with the speed reducer 1, and the other end of the first half shaft is detachably mounted on the first hub assembly 5. In one specific example, the splined end of the first half shaft 3 is connected to the side gear hole of the reduction gear 1 through the axle housing 2; the flange end of the first half shaft 3 is detachably connected with the first hub assembly 5 through bolts.
Specifically, the axle housing 2 is a housing structure formed by splicing and welding an upper half housing and a lower half housing; the upper half shell and the lower half shell comprise a tooth pack section 21 and a straight line section 22; the mounting plate is provided on the outer wall side of the straight section 22.
According to the light bus axle adopting the wedge brake, the speed reducer 1, the axle housing 2, the first half shaft 3, the first brake drum 4, the first hub assembly 5 and the first wedge brake 6 are arranged, wherein the speed reducer 1 is connected with one end of the first half shaft 3, the first hub assembly 5 is connected with the other end of the first half shaft 3, during transmission, a transmission shaft of the whole bus transmits power to the speed reducer 1, the speed reducer 1 transmits power to the first hub assembly 5 through the first half shaft 3, and wheels are connected with the hub assembly through bolts, so that the wheels are driven to rotate, and the vehicle is driven to run.
As shown in fig. 1, the first brake drum 4 is coaxially connected with the first hub assembly 5, the outer wall side of the first wedge brake 6 is matched with the inner wall side of the first brake drum 4, and during braking, the first wedge brake 6 can press the first brake drum 4 to generate friction moment and transmit the friction moment to the first hub assembly 5 and wheels, so that the vehicle is decelerated or parked.
Compared with the prior art, the light bus axle adopting the wedge brake provided by the embodiment of the utility model has the following advantages:
firstly, compared with the traditional cam type brake with the same specification, the wedge type brake adopted by the bus axle has lighter weight, can reduce the importance of the whole axle, obviously reduces the unsprung mass of the bus vehicle, and effectively improves the dynamic property, economy, smoothness and comfort of the bus vehicle;
the second wedge brake belongs to an equal force type brake, compared with the traditional cam brake with the same specification, the braking efficiency can be improved by 10%, the reliability of the passenger car during braking is effectively improved, and the pressure on two sides of a brake drum can be ensured to be equal, so that the braking gaps of left wheels and right wheels are the same, the braking force distribution of the left wheels and the right wheels is balanced, and the directional stability of the passenger car during braking is improved;
third, this passenger train axle adopts wedge brake simple structure, compares traditional cam formula stopper with the specification, and braking system's drive chain shortens 1/3, and transmission efficiency can improve 10%, has saved whole car air supply, has improved the efficiency of passenger train engine, and in addition, its assembly and dismantlement are convenient and fast more, and maintenance efficiency can improve 20%.
Further to the above embodiment, as shown in fig. 2, the first wedge brake 6 includes an air chamber brake cylinder assembly 61, a wedge assembly 62, a friction member 63, a brake member 64, and a brake shoe 65.
The brake backing plate 65 is attached to the mounting plate, and the brake assembly 64, wedge assembly 62 and cylinder assembly 61 are all disposed on the brake backing plate 65. The friction assembly 63 is arranged on the outer wall surface of the brake assembly 64, the wedge assembly 62 is connected with the brake assembly 64, the air chamber brake cylinder assembly 61 is connected with the wedge assembly 62, and the wedge assembly 62 can control the action of the brake assembly 64 under the action of the air chamber brake cylinder assembly 61.
Compared with the traditional cam type brake, the wedge type brake has the advantages that components such as a cam shaft, an air chamber bracket and an adjusting arm are reduced, the structure of the two ends of the whole bridge is greatly simplified, and the flexibility of arrangement of a chassis system of a passenger car is improved.
As shown in fig. 2, the brake assembly 64 includes a first brake shoe 641, a second brake shoe 642, a first shoe shaft 643, and a second shoe shaft 644. In a specific example, the first brake shoe 641 and the second brake shoe 642 are identical in structure and arc-shaped in structure, and are disposed opposite to each other.
The first and second brake shoes 641 and 642 are pivotally connected to the base plate 65 by first and second shoe shafts 643 and 644, respectively; under the action of the air chamber brake cylinder assembly 61, the wedge assembly 62 can drive the first brake shoe 641 and the second brake shoe 642 to open so that the friction assembly 63 presses against the brake drum to generate friction torque.
To ensure the connection effect of the first brake shoe 641 and the second brake shoe 642 and promote the return of the two, the wedge brake further includes an elastic member 66 as shown in fig. 2; the elastic member 66 is connected to the first brake shoe 641 and the second brake shoe 642 at both ends thereof, and the elastic member 66 may be a spring, which is connected to the brake shoes at both sides by a hanging pin in a specific example.
Further, as shown in fig. 2, the friction assembly 63 includes a first friction member 631 and a second friction member 632.
The inner surface of the first friction member 631 mates with the outer surface of the first brake shoe 641 and the inner surface of the second friction member 632 mates with the outer surface of the second brake shoe 642.
The friction piece can be a friction plate, the friction plate is riveted with the corresponding brake shoe into a whole by means of a rivet, and the outer circle of the friction plate is matched with the inner hole of the brake drum.
Further to the above embodiments, as shown in FIG. 3, the wedge assembly 62 includes a wedge rod 621 and a piston 622.
Both ends of the wedge rod 621 are connected to the piston 622 and the air chamber cylinder assembly 61, respectively, and the wedge rod 621 can push the piston 622 to move under the action of the air chamber cylinder assembly 61 to drive the first brake shoe 641 and the second brake shoe 642 to open, thereby generating pressure on the first friction member 631 and the second friction member 632.
Further to the above embodiment, as shown in fig. 3, the wedge assembly 62 further includes a clearance self-adjusting mechanism 623; at the end of piston 622 remote from wedge 621, lash adjuster 623 is operative to adjust the lash between brake assembly 64 and friction assembly 63.
The wedge-type brake has the advantages of self-adjusting gap, closed self-lubrication and the like, and compared with the traditional cam-type brake with the same specification, the maintenance mileage can be prolonged by 15%.
The transmission and braking working principle of the light bus axle adopting the wedge brake provided by the embodiment of the utility model is as follows: during transmission, the whole vehicle transmission shaft transmits power to the speed reducer 1, the speed reducer 1 transmits power to the first hub assembly 5 by virtue of the first half shaft 3, and the wheels are connected with the hub assembly through bolts, so that the wheels are driven to rotate, and the vehicle is driven to run;
during braking, the wedge rod 621 in the first wedge brake 6 is pushed out under the action of the air chamber brake cylinder assembly 61 to push the pistons 622 at two ends to move outwards, the pistons 622 at two ends push the first brake shoe 641 and the second brake shoe 642 to rotate around the respective shoe shafts to open, the first friction piece 631 and the second friction piece 632 are forced to press the first brake drum 4 to generate friction moment, and the first brake drum 4 transmits the friction moment to the hub assembly and the wheels, so that the vehicle is decelerated or stopped.
Further to the above embodiment, as shown in fig. 1, the light-weight passenger car axle using wedge brake further includes a second half shaft, a second brake drum 7, a second hub assembly 8 and a second wedge brake 9.
The second half shaft, the second brake drum 7, the second hub assembly 8 and the second wedge brake 9 are respectively and symmetrically arranged with the first half shaft 3, the first brake drum 4, the first hub assembly 5 and the first wedge brake 6 about the central axis of the axle housing 2, and the structure and the connection relationship are the same as those of the first half shaft 3, the first brake drum 4, the first hub assembly 5 and the first wedge brake 6, and are not repeated here.
In the description of the present specification, the description with reference to the term "particular example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A lightweight passenger vehicle axle employing wedge brakes, comprising: the device comprises a speed reducer, an axle housing, a first half axle, a first brake drum, a first hub assembly and a first wedge brake;
the speed reducer is arranged on the tooth pack section of the axle housing;
the two ends of the first half shaft are respectively connected with the speed reducer and the first hub assembly;
the first hub assembly is sleeved on the outer surface of the axle housing, the first brake drum is coaxially connected with the first hub assembly, and the first brake drum can rotate along with the first hub assembly;
the first wedge brake is connected to the mounting plate of the axle housing, and the outer surface of the first wedge brake is matched with the inner surface of the first brake drum.
2. The light bus axle employing a wedge brake of claim 1 wherein one end of the first axle shaft is connected to the speed reducer through the axle housing and the other end is removably mounted to the first hub assembly.
3. The light bus axle employing wedge brakes of claim 1, wherein the first wedge brake comprises an air chamber brake cylinder assembly, a wedge assembly, a friction assembly, a brake assembly, and a brake pad;
the bottom plate is connected to the mounting plate, and the brake assembly, the wedge block assembly and the air chamber brake cylinder assembly are all arranged on the bottom plate;
the friction assembly is arranged on the outer wall surface of the braking assembly, the wedge block assembly is connected with the braking assembly, the air chamber braking cylinder assembly is connected with the wedge block assembly, and the wedge block assembly can control the action of the braking assembly under the action of the air chamber braking cylinder assembly.
4. The light weight passenger vehicle axle employing a wedge brake of claim 3 wherein the brake assembly comprises a first brake shoe, a second brake shoe, a first shoe shaft and a second shoe shaft;
the first brake shoe and the second brake shoe are respectively and pivotally connected with the bottom plate through the first shoe shaft and the second shoe shaft; under the action of the air chamber brake cylinder assembly, the wedge block assembly can drive the first brake shoe and the second brake shoe to open so that the friction component presses the first brake drum to generate friction moment.
5. The light weight passenger vehicle axle employing a wedge brake of claim 4, wherein the first wedge brake further comprises an elastic member;
and two ends of the elastic piece are respectively connected with the first brake shoe and the second brake shoe.
6. The light weight passenger vehicle axle employing a wedge brake of claim 4, wherein the friction assembly comprises a first friction member and a second friction member;
the inner surface of the first friction piece is matched with the outer surface of the first brake shoe, and the inner surface of the second friction piece is matched with the outer surface of the second brake shoe.
7. A lightweight passenger vehicle axle employing wedge brakes according to claim 3, wherein the wedge assembly comprises a wedge rod and a piston;
the two ends of the wedge rod are respectively connected with the piston and the air chamber brake cylinder assembly, and under the action of the air chamber brake cylinder assembly, the wedge rod can push the piston to move so as to drive the brake assembly to open.
8. The light weight passenger vehicle axle employing a wedge brake of claim 7, wherein the wedge assembly further comprises a lash self-adjusting mechanism;
the clearance self-adjusting mechanism is used for adjusting the clearance between the braking component and the friction component.
9. The wedge brake light bus axle of claim 1 further comprising a second axle shaft, a second brake drum, a second hub assembly, and a second wedge brake;
the second half shaft, the second brake drum, the second hub assembly and the second wedge brake are respectively and symmetrically distributed with the first half shaft, the first brake drum, the first hub assembly and the first wedge brake with respect to the central axis of the axle housing.
10. The light-weight passenger car axle adopting the wedge brake according to claim 1, wherein the axle housing is a housing structure formed by splicing and welding an upper half housing and a lower half housing; the upper half shell and the lower half shell comprise the tooth packet section and a straight line section; the mounting plate is arranged on the outer wall side of the straight line section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320255516.5U CN220163844U (en) | 2023-02-20 | 2023-02-20 | Light bus axle adopting wedge brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320255516.5U CN220163844U (en) | 2023-02-20 | 2023-02-20 | Light bus axle adopting wedge brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220163844U true CN220163844U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320255516.5U Active CN220163844U (en) | 2023-02-20 | 2023-02-20 | Light bus axle adopting wedge brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220163844U (en) |
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2023
- 2023-02-20 CN CN202320255516.5U patent/CN220163844U/en active Active
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